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authorFredrik Rinnestam <fredrik@crux.nu>2017-06-20 15:26:36 +0200
committerFredrik Rinnestam <fredrik@crux.nu>2017-06-20 15:26:36 +0200
commit62eb2fedd5fe80d82aafae758c7ca9ceb67fcdb9 (patch)
treec1b5b7754ea11da30f710d7a64e42a3a4d5b7f81 /glibc-32
parenteee78a9dd5e0f9fac33f6815c396d2eaef4bc7ff (diff)
downloadcore-62eb2fedd5fe80d82aafae758c7ca9ceb67fcdb9.tar.gz
core-62eb2fedd5fe80d82aafae758c7ca9ceb67fcdb9.tar.xz
[notify] glibc-32: Synced with upstream. Contains fixes for
CVE-2017-1000366 and CVE-2015-5180.
Diffstat (limited to 'glibc-32')
-rw-r--r--glibc-32/.md5sum1
-rw-r--r--glibc-32/.signature5
-rw-r--r--glibc-32/Pkgfile6
-rw-r--r--glibc-32/glibc-2.24-updates.patch15014
4 files changed, 15022 insertions, 4 deletions
diff --git a/glibc-32/.md5sum b/glibc-32/.md5sum
index 5c1a7d4a..9d607eed 100644
--- a/glibc-32/.md5sum
+++ b/glibc-32/.md5sum
@@ -1,3 +1,4 @@
+655f50d41e24dcd37447fd6c63ce3f7f glibc-2.24-updates.patch
97dc5517f92016f3d70d83e3162ad318 glibc-2.24.tar.xz
ac19b5dac0b160aa59a2e265998c3e91 kernel-headers-4.9.5.tar.xz
a8f4549c716cd37244fbf1ed059497f8 lib32.conf
diff --git a/glibc-32/.signature b/glibc-32/.signature
index 66add287..c30b41d8 100644
--- a/glibc-32/.signature
+++ b/glibc-32/.signature
@@ -1,7 +1,8 @@
untrusted comment: verify with /etc/ports/core.pub
-RWRJc1FUaeVeqgy+zDVBzaxiUtj9qjk77llpDzxL+/Kw+YhaDgV9yXeWfOgfLWa272oyoj3isViZ+xiv2s8v495U3i3LmfrkcAM=
-SHA256 (Pkgfile) = c1d05d012efa069b734ef67a079721b5cab3d7c7b99c0372fa3815148badad7c
+RWRJc1FUaeVeqnoY9f/WUSSU2kP4f/7u3nFnlwSRMb0MI28wvBXZ/yzOWqBPJzoeN30mfQjnKkfSkZ92JX4mMBXGN4XjPIKRmAs=
+SHA256 (Pkgfile) = 70412cb73d56e5faa146698396967763dac1c80187d3813e2e426d3da36971d0
SHA256 (.footprint) = 0af47db3e8a5ea832d1f971ca56f7718a59167c0214375307a508ff46b327119
SHA256 (glibc-2.24.tar.xz) = 99d4a3e8efd144d71488e478f62587578c0f4e1fa0b4eed47ee3d4975ebeb5d3
SHA256 (kernel-headers-4.9.5.tar.xz) = 5783ad8f668ee71561fae370fbcdc477aaa6df249bd85635b87a8c204aeb4aa9
+SHA256 (glibc-2.24-updates.patch) = d74245b3a34b4bcd119ac1da145ee01af77f98c0d3c4bee763049582e8582971
SHA256 (lib32.conf) = 2f174d2bcefe1c29327690514f34d6970fffdd54398320ca23a11b5f1e3c9b2d
diff --git a/glibc-32/Pkgfile b/glibc-32/Pkgfile
index 6008a3c6..91f2a992 100644
--- a/glibc-32/Pkgfile
+++ b/glibc-32/Pkgfile
@@ -4,10 +4,10 @@
name=glibc-32
version=2.24
-release=2
+release=6
source=(http://ftpmirror.gnu.org/gnu/glibc/glibc-2.24.tar.xz \
http://crux.nu/files/distfiles/kernel-headers-4.9.5.tar.xz \
- lib32.conf)
+ glibc-2.24-updates.patch lib32.conf)
build() {
mkdir build
@@ -17,6 +17,8 @@ build() {
export CC="${CC:-gcc} -m32"
export CFLAGS="$CFLAGS -Wno-error=parentheses"
+ patch -p1 -d $SRC/glibc-${version:0:4} -i $SRC/glibc-2.24-updates.patch
+
../glibc-${version:0:4}/configure --prefix=/usr \
--libdir=/usr/lib32 \
--libexecdir=/usr/lib32 \
diff --git a/glibc-32/glibc-2.24-updates.patch b/glibc-32/glibc-2.24-updates.patch
new file mode 100644
index 00000000..0fc9dd2c
--- /dev/null
+++ b/glibc-32/glibc-2.24-updates.patch
@@ -0,0 +1,15014 @@
+diff --git a/ChangeLog b/ChangeLog
+index c44c926094..cd6b5a92e9 100644
+--- a/ChangeLog
++++ b/ChangeLog
+@@ -1,3 +1,565 @@
++2017-06-14 Florian Weimer <fweimer@redhat.com>
++
++ * sysdeps/i386/i686/multiarch/strcspn-c.c: Add IS_IN (libc) guard.
++ * sysdeps/i386/i686/multiarch/varshift.c: Likewise.
++
++2017-03-07 Siddhesh Poyarekar <siddhesh@sourceware.org>
++
++ [BZ #21209]
++ * elf/rtld.c (process_envvars): Ignore LD_HWCAP_MASK for
++ AT_SECURE processes.
++ * sysdeps/generic/unsecvars.h: Add LD_HWCAP_MASK.
++
++2017-06-19 Florian Weimer <fweimer@redhat.com>
++
++ * elf/rtld.c (audit_list_string): New variable.
++ (audit_list): Update comment.
++ (struct audit_list_iter): Define.
++ (audit_list_iter_init, audit_list_iter_next): New function.
++ (dl_main): Use struct audit_list_iter to process audit modules.
++ (process_dl_audit): Call dso_name_valid_for_suid.
++ (process_envvars): Set audit_list_string instead of calling
++ process_dl_audit.
++
++2017-06-19 Florian Weimer <fweimer@redhat.com>
++
++ * elf/rtld.c (SECURE_NAME_LIMIT, SECURE_PATH_LIMIT): Define.
++ (dso_name_valid_for_suid): New function.
++ (handle_ld_preload): Likewise.
++ (dl_main): Call it. Remove alloca.
++
++2017-06-19 Florian Weimer <fweimer@redhat.com>
++
++ [BZ #21624]
++ CVE-2017-1000366
++ * elf/rtld.c (process_envvars): Ignore LD_LIBRARY_PATH for
++ __libc_enable_secure.
++
++2017-02-01 Andreas Schwab <schwab@linux-m68k.org>
++
++ * sysdeps/m68k/m680x0/m68020/atomic-machine.h
++ (__arch_compare_and_exchange_val_64_acq, atomic_exchange_acq)
++ (atomic_exchange_and_add, atomic_add): Add casts to 64 bit asm
++ operands.
++
++2017-05-12 Florian Weimer <fweimer@redhat.com>
++
++ [BZ #21386]
++ * sysdeps/nptl/fork.c (__libc_fork): Remove assertions on the
++ parent PID. The assertion in the child is incorrect with PID
++ namespaces.
++
++2017-06-07 Arjun Shankar <arjun.is@lostca.se>
++
++ * sysdeps/unix/sysv/linux/tst-clone2.c: Do not
++ include test-skeleton.c.
++ Include support/check.h and support/test-driver.c.
++
++2016-11-24 Adhemerval Zanella <adhemerval.zanella@linaro.org>
++
++ * sysdeps/nptl/fork.c (__libc_fork): Remove pid cache setting.
++ * nptl/allocatestack.c (allocate_stack): Likewise.
++ (__reclaim_stacks): Likewise.
++ (setxid_signal_thread): Obtain pid through syscall.
++ * nptl/nptl-init.c (sigcancel_handler): Likewise.
++ (sighandle_setxid): Likewise.
++ * nptl/pthread_cancel.c (pthread_cancel): Likewise.
++ * sysdeps/unix/sysv/linux/pthread_kill.c (__pthread_kill): Likewise.
++ * sysdeps/unix/sysv/linux/pthread_sigqueue.c (pthread_sigqueue):
++ Likewise.
++ * sysdeps/unix/sysv/linux/createthread.c (create_thread): Likewise.
++ * sysdeps/unix/sysv/linux/raise.c (raise): Remove old behaviour
++ comment.
++ * sysdeps/unix/sysv/linux/getpid.c: Remove file.
++ * nptl/descr.h (struct pthread): Change comment about pid value.
++ * nptl/pthread_getattr_np.c (pthread_getattr_np): Remove thread
++ pid assert.
++ * sysdeps/unix/sysv/linux/pthread-pids.h (__pthread_initialize_pids):
++ Do not set pid value.
++ * nptl_db/td_ta_thr_iter.c (iterate_thread_list): Remove thread
++ pid cache check.
++ * nptl_db/td_thr_validate.c (td_thr_validate): Likewise.
++ * sysdeps/aarch64/nptl/tcb-offsets.sym: Remove pid offset.
++ * sysdeps/alpha/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/arm/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/hppa/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/i386/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/ia64/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/m68k/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/microblaze/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/mips/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/nios2/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/powerpc/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/s390/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/sh/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/sparc/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/tile/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/x86_64/nptl/tcb-offsets.sym: Likewise.
++ * sysdeps/unix/sysv/linux/aarch64/clone.S: Remove pid and tid caching.
++ * sysdeps/unix/sysv/linux/alpha/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/arm/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/hppa/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/i386/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/ia64/clone2.S: Likewise.
++ * sysdeps/unix/sysv/linux/mips/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/nios2/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/s390/s390-32/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/s390/s390-64/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/sh/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/sparc/sparc32/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/sparc/sparc64/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/tile/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/x86_64/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/aarch64/vfork.S: Remove pid set and reset.
++ * sysdeps/unix/sysv/linux/alpha/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/arm/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/i386/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/ia64/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/m68k/clone.S: Likewise.
++ * sysdeps/unix/sysv/linux/m68k/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/mips/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/nios2/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/s390/s390-32/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/s390/s390-64/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/sh/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/tile/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/x86_64/vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/hppa/pt-vfork.S: Likewise.
++ * sysdeps/unix/sysv/linux/tst-clone2.c (f): Remove direct pthread
++ struct access.
++ (clone_test): Remove function.
++ (do_test): Rewrite to take in consideration pid is not cached anymore.
++
++2016-09-26 Adhemerval Zanella <adhemerval.zanella@linaro.org>
++
++ * sysdeps/unix/sysdep.h (__INTERNAL_SYSCALL0): New macro.
++ (__INTERNAL_SYSCALL1): Likewise.
++ (__INTERNAL_SYSCALL2): Likewise.
++ (__INTERNAL_SYSCALL3): Likewise.
++ (__INTERNAL_SYSCALL4): Likewise.
++ (__INTERNAL_SYSCALL5): Likewise.
++ (__INTERNAL_SYSCALL6): Likewise.
++ (__INTERNAL_SYSCALL7): Likewise.
++ (__INTERNAL_SYSCALL_NARGS_X): Likewise.
++ (__INTERNAL_SYSCALL_NARGS): Likewise.
++ (__INTERNAL_SYSCALL_DISP): Likewise.
++ (INTERNAL_SYSCALL_CALL): Likewise.
++ (__SYSCALL0): Rename to __INLINE_SYSCALL0.
++ (__SYSCALL1): Rename to __INLINE_SYSCALL1.
++ (__SYSCALL2): Rename to __INLINE_SYSCALL2.
++ (__SYSCALL3): Rename to __INLINE_SYSCALL3.
++ (__SYSCALL4): Rename to __INLINE_SYSCALL4.
++ (__SYSCALL5): Rename to __INLINE_SYSCALL5.
++ (__SYSCALL6): Rename to __INLINE_SYSCALL6.
++ (__SYSCALL7): Rename to __INLINE_SYSCALL7.
++ (__SYSCALL_NARGS_X): Rename to __INLINE_SYSCALL_NARGS_X.
++ (__SYSCALL_NARGS): Rename to __INLINE_SYSCALL_NARGS.
++ (__SYSCALL_DISP): Rename to __INLINE_SYSCALL_DISP.
++ (__SYSCALL_CALL): Rename to INLINE_SYSCALL_CALL.
++ (SYSCALL_CANCEL): Replace __SYSCALL_CALL with INLINE_SYSCALL_CALL.
++
++2017-04-28 H.J. Lu <hongjiu.lu@intel.com>
++
++ [BZ #21396]
++ * sysdeps/x86/cpu-features.c (init_cpu_features): Set
++ Prefer_No_AVX512 if AVX512ER isn't available.
++ * sysdeps/x86/cpu-features.h (bit_arch_Prefer_No_AVX512): New.
++ (index_arch_Prefer_No_AVX512): Likewise.
++ * sysdeps/x86_64/multiarch/memcpy.S (__new_memcpy): Don't use
++ AVX512 version if Prefer_No_AVX512 is set.
++ * sysdeps/x86_64/multiarch/memcpy_chk.S (__memcpy_chk):
++ Likewise.
++ * sysdeps/x86_64/multiarch/memmove.S (__libc_memmove): Likewise.
++ * sysdeps/x86_64/multiarch/memmove_chk.S (__memmove_chk):
++ Likewise.
++ * sysdeps/x86_64/multiarch/mempcpy.S (__mempcpy): Likewise.
++ * sysdeps/x86_64/multiarch/mempcpy_chk.S (__mempcpy_chk):
++ Likewise.
++ * sysdeps/x86_64/multiarch/memset.S (memset): Likewise.
++ * sysdeps/x86_64/multiarch/memset_chk.S (__memset_chk):
++ Likewise.
++
++2017-04-28 H.J. Lu <hongjiu.lu@intel.com>
++
++ * sysdeps/x86/cpu-features.c (init_cpu_features): Set
++ Prefer_No_VZEROUPPER if AVX512ER is available.
++ * sysdeps/x86/cpu-features.h
++ (bit_cpu_AVX512PF): New.
++ (bit_cpu_AVX512ER): Likewise.
++ (bit_cpu_AVX512CD): Likewise.
++ (bit_cpu_AVX512BW): Likewise.
++ (bit_cpu_AVX512VL): Likewise.
++ (index_cpu_AVX512PF): Likewise.
++ (index_cpu_AVX512ER): Likewise.
++ (index_cpu_AVX512CD): Likewise.
++ (index_cpu_AVX512BW): Likewise.
++ (index_cpu_AVX512VL): Likewise.
++ (reg_AVX512PF): Likewise.
++ (reg_AVX512ER): Likewise.
++ (reg_AVX512CD): Likewise.
++ (reg_AVX512BW): Likewise.
++ (reg_AVX512VL): Likewise.
++
++2017-01-05 Joseph Myers <joseph@codesourcery.com>
++
++ [BZ #21026]
++ * sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
++ (readahead): New syscall entry.
++
++2017-04-07 H.J. Lu <hongjiu.lu@intel.com>
++
++ [BZ #21258]
++ * sysdeps/x86_64/dl-trampoline.S (_dl_runtime_resolve_opt):
++ Define only if _dl_runtime_resolve is defined to
++ _dl_runtime_resolve_sse_vex.
++ * sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve_opt):
++ Fallthrough to _dl_runtime_resolve_sse_vex.
++
++2017-04-03 Mike Frysinger <vapier@gentoo.org>
++
++ [BZ #21253]
++ * sysdeps/unix/sysv/linux/spawni.c (__spawnix): Increase argv_size
++ slack space by 32KiB.
++
++2017-03-31 Slava Barinov <v.barinov@samsung.com>
++
++ [BZ #21289]
++ * io/fts.h (fts_set): Replace __REDIRECT with __REDIRECT_NTH.
++
++2017-03-20 Mike Frysinger <vapier@gentoo.org>
++
++ [BZ #21275]
++ * sysdeps/unix/sysv/linux/spawni.c [__ia64__] (CLONE): Rename
++ __stack to __stackbase.
++ (STACK): Invert _STACK_GROWS_DOWN and _STACK_GROWS_UP order of
++ checks so we can include defined(__ia64__) first.
++
++2017-03-15 John David Anglin <danglin@gcc.gnu.org>
++
++ * sysdeps/hppa/dl-machine.h (DL_STACK_END): Define.
++ (RTLD_START): Don't record stack end address in _dl_start_user.
++
++2017-01-30 H.J. Lu <hongjiu.lu@intel.com>
++
++ [BZ #21081]
++ * sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S
++ (L(stosb)): Add VZEROUPPER before ret.
++
++2016-11-28 H.J. Lu <hongjiu.lu@intel.com>
++
++ [BZ #20750]
++ * sysdeps/x86_64/sysdep.h (JUMPTARGET): Check SHARED instead
++ of PIC.
++
++2016-12-31 Florian Weimer <fweimer@redhat.com>
++
++ [BZ #18784]
++ CVE-2015-5180
++ * include/arpa/nameser_compat.h (T_QUERY_A_AND_AAAA): Rename from
++ T_UNSPEC. Adjust value.
++ * resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname4_r): Use it.
++ * resolv/res_query.c (__libc_res_nquery): Likewise.
++ * resolv/res_mkquery.c (res_nmkquery): Check for out-of-range
++ QTYPEs.
++ * resolv/tst-resolv-qtypes.c: New file.
++ * resolv/Makefile (xtests): Add tst-resolv-qtypes.
++ (tst-resolv-qtypes): Link against libresolv and libpthread.
++
++2017-02-02 Siddhesh Poyarekar <siddhesh@sourceware.org>
++
++ * sysdeps/generic/unsecvars.h: Add GLIBC_TUNABLES.
++
++2017-01-23 Rajalakshmi Srinivasaraghavan <raji@linux.vnet.ibm.com>
++ Steven Munroe <sjmunroe@us.ibm.com>
++ Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
++
++ [BZ #20822]
++ * sysdeps/unix/sysv/linux/powerpc/elision-lock.c
++ (__lll_lock_elision): Access adapt_count via C11 atomics.
++ * sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
++ (__lll_trylock_elision): Likewise.
++ * sysdeps/unix/sysv/linux/powerpc/elision-unlock.c
++ (__lll_unlock_elision): Update adapt_count variable inside the
++ critical section using C11 atomics.
++
++2016-12-24 Carlos O'Donell <carlos@redhat.com>
++
++ [BZ #11941]
++ * elf/dl-close.c (_dl_close): Take dl_load_lock to examine map.
++ Remove assert (map->l_init_called); if DF_1_NODELETE is set.
++ * elf/Makefile [ifeq (yes,$(build-shared))] (tests): Add
++ tst-nodelete-dlclose.
++ (modules-names): Add tst-nodelete-dlclose-dso and
++ tst-nodelete-dlclose-plugin.
++ ($(objpfx)tst-nodelete-dlclose-dso.so): Define.
++ ($(objpfx)tst-nodelete-dlclose-plugin.so): Define.
++ ($(objpfx)tst-nodelete-dlclose): Define.
++ ($(objpfx)tst-nodelete-dlclose.out): Define.
++
++2016-08-02 Aurelien Jarno <aurelien@aurel32.net>
++
++2016-08-02 Aurelien Jarno <aurelien@aurel32.net>
++
++ * sysdeps/alpha/fpu/s_ceil.c (__ceil): Add argument with itself
++ when it is a NaN.
++ [_IEEE_FP_INEXACT] Remove.
++ * sysdeps/alpha/fpu/s_ceilf.c (__ceilf): Likewise.
++ * sysdeps/alpha/fpu/s_floor.c (__floor): Add argument with itself
++ when it is a NaN.
++ [_IEEE_FP_INEXACT] Remove.
++ * sysdeps/alpha/fpu/s_floorf.c (__floorf): Likewise.
++ * sysdeps/alpha/fpu/s_rint.c (__rint): Add argument with itself
++ when it is a NaN.
++ * sysdeps/alpha/fpu/s_rintf.c (__rintf): Likewise.
++ * sysdeps/alpha/fpu/s_trunc.c (__trunc): Return the input value
++ when its absolute value is greater than 0x1.0p52.
++ [_IEEE_FP_INEXACT] Remove.
++ * sysdeps/alpha/fpu/s_truncf.c (__truncf): Return the input value
++ when its absolute value is greater than 0x1.0p23.
++ [_IEEE_FP_INEXACT] Remove.
++
++2016-11-30 H.J. Lu <hongjiu.lu@intel.com>
++
++ [BZ #20495]
++ [BZ #20508]
++ * sysdeps/x86/cpu-features.c (init_cpu_features): For Intel
++ processors, set Use_dl_runtime_resolve_slow and set
++ Use_dl_runtime_resolve_opt if XGETBV suports ECX == 1.
++ * sysdeps/x86/cpu-features.h (bit_arch_Use_dl_runtime_resolve_opt):
++ New.
++ (bit_arch_Use_dl_runtime_resolve_slow): Likewise.
++ (index_arch_Use_dl_runtime_resolve_opt): Likewise.
++ (index_arch_Use_dl_runtime_resolve_slow): Likewise.
++ * sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Use
++ _dl_runtime_resolve_avx512_opt and _dl_runtime_resolve_avx_opt
++ if Use_dl_runtime_resolve_opt is set. Use
++ _dl_runtime_resolve_slow if Use_dl_runtime_resolve_slow is set.
++ * sysdeps/x86_64/dl-trampoline.S: Include <cpu-features.h>.
++ (_dl_runtime_resolve_opt): New. Defined for AVX and AVX512.
++ (_dl_runtime_resolve): Add one for _dl_runtime_resolve_sse_vex.
++ * sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve_avx_slow):
++ New.
++ (_dl_runtime_resolve_opt): Likewise.
++ (_dl_runtime_profile): Define only if _dl_runtime_profile is
++ defined.
++
++2016-11-24 Aurelien Jarno <aurelien@aurel32.net>
++
++ * sysdeps/x86_64/memcpy_chk.S (__memcpy_chk): Check for SHARED
++ instead of PIC.
++
++2016-11-23 Matthew Fortune <Matthew.Fortune@imgtec.com>
++ Maciej W. Rozycki <macro@imgtec.com>
++
++ * sysdeps/mips/mips32/crti.S (_init): Add `.insn' pseudo-op at
++ `.Lno_weak_fn' label.
++ * sysdeps/mips/mips64/n32/crti.S (_init): Likewise.
++ * sysdeps/mips/mips64/n64/crti.S (_init): Likewise.
++
++2016-11-22 Adhemerval Zanella <adhemerva.zanella@linaro.org>
++
++ [BZ #20847]
++ * posix/execvpe.c (maybe_script_execute): Remove write past allocated
++ array bounds.
++ (__execvpe): Likewise.
++
++2016-11-15 Denis Kaganovich <mahatma@eu.by>
++ Magnus Granberg <zorry@gentoo.org>
++ Mike Frysinger <vapier@gentoo.org>
++
++ [BZ #20662]
++ * configure.ac (libc_cv_predef_stack_protector): Also check for
++ __stack_chk_fail_local symbols.
++ * configure: Regenerated.
++
++2016-11-03 Joseph Myers <joseph@codesourcery.com>
++
++ * conform/Makefile ($(linknamespace-header-tests)): Also depend on
++ $(linknamespace-symlists-tests).
++
++2016-11-06 Aurelien Jarno <aurelien@aurel32.net>
++
++ * iconv/gconv.h (__gconv_info): Define __data element using a
++ zero-length array.
++
++2016-10-25 Joseph Myers <joseph@codesourcery.com>
++
++ * sysdeps/powerpc/powerpc32/power6/memset.S (memset): Use cmplwi
++ instead of cmpli.
++ * sysdeps/powerpc/powerpc64/power6/memset.S (memset): Use cmpldi
++ instead of cmpli.
++
++2016-10-24 Adhemerval Zanella <adhemerval.zanella@linaro.org>
++
++ * sysdeps/unix/sysv/linux/pread.c (__libc_pread): Use SYSCALL_LL_PRW.
++ * sysdeps/unix/sysv/linux/pwrite.c (__libc_pwrite): Likewise.
++ * sysdeps/unix/sysv/linux/pread64.c (__libc_pread64): Use
++ SYSCALL_LL64_PRW.
++ * sysdeps/unix/sysv/linux/pwrite64.c (__libc_pwrite64): Likewise.
++ * sysdeps/unix/sysv/linux/sh/kernel-features.h: Define
++ __ASSUME_PRW_DUMMY_ARG.
++ * sysdeps/unix/sysv/linux/sh/pread.c: Remove file.
++ * sysdeps/unix/sysv/linux/sh/pread64.c: Likewise.
++ * sysdeps/unix/sysv/linux/sh/pwrite.c: Likewise.
++ * sysdeps/unix/sysv/linux/sh/pwrite64.c: Likewise.
++ * sysdeps/unix/sysv/linux/sysdep.h: Define SYSCALL_LL_PRW and
++ SYSCALL_LL_PRW64 based on __ASSUME_PRW_DUMMY_ARG.
++
++2016-10-05 Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
++
++ * sysdeps/powerpc/fpu/libm-test-ulps: Regenerated.
++
++2016-09-20 Adhemerval Zanella <adhemerval.zanella@linaro.org>
++
++ * sysdeps/unix/sysv/linux/spawni.c (__spawnix): Correctly block and unblock
++ all signals when executing the clone vfork child.
++ (SIGALL_SET): Remove macro.
++
++ * nptl/Makefile (tests): Add tst-exec5.
++ * nptl/tst-exec5.c: New file.
++ * sysdeps/unix/sysv/linux/spawni.c (__spawni): Correctly enable and disable
++ asynchronous cancellation.
++
++2016-09-19 Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
++
++ [BZ #20615]
++ * sysdeps/powerpc/powerpc32/power9/multiarch/Implies: Replace
++ fpu directory by non-fpu.
++ * sysdeps/powerpc/powerpc64/power9/fpu/Implies: Remove dependency
++ on non-fpu directory from a fpu directory.
++
++2016-09-02 Roland McGrath <roland@hack.frob.com>
++
++ * sysdeps/arm/nacl/libc.abilist: Add GLIBC_2.24 A.
++
++ * sysdeps/nacl/dup.c: Add libc_hidden_def.
++
++2016-09-02 Roland McGrath <roland@hack.frob.com>
++
++ * sysdeps/posix/wait3.c: Don't treat STAT_LOC as a union, since it's
++ not any more.
++
++2016-09-02 Roland McGrath <roland@hack.frob.com>
++
++ * sysdeps/nacl/clock.c (clock): nacl_abi_clock_t -> nacl_irt_clock_t
++
++2016-08-17 Florian Weimer <fweimer@redhat.com>
++
++ Reduce time to expected nptl/tst-once5 failure.
++ * nptl/tst-once5.cc (TIMEOUT): Define.
++
++2016-08-18 Florian Weimer <fweimer@redhat.com>
++
++ [BZ #16907]
++ * argp/argp.h: Switch to __BEGIN_DECLS and __END_DECLS.
++ (__THROW, __NTH, __attribute__, __restrict): Remove definitions.
++ * argp/argp-fmtstream.h: Add __BEGIN_DECLS and __END_DECLS.
++ (__attribute__): Remove definition.
++
++2016-08-15 Andreas Schwab <schwab@suse.de>
++
++ [BZ #20435]
++ * sysdeps/unix/sysv/linux/arm/setcontext.S (__startcontext): Mark
++ as .cantunwind.
++
++2016-08-17 Florian Weimer <fweimer@redhat.com>
++
++ [BZ #20452]
++ Avoid additional copies of objects in libc.a in static libraries.
++ * sysdeps/ia64/nptl/Makefile (libpthread-shared-only-routines):
++ Add ptw-sysdep, ptw-sigblock, ptw-sigprocmask.
++ * sysdeps/mips/Makefile (librt-shared-only-routines): Add
++ rt-sysdep.
++ * sysdeps/mips/nptl/Makefile (libpthread-shared-only-routines):
++ Add nptl-sysdep.
++ * sysdeps/s390/nptl/Makefile (libpthread-shared-only-routines):
++ Add ptw-sysdep.
++ * sysdeps/unix/alpha/Makefile (librt-shared-only-routines): Add
++ rt-sysdep.
++ * sysdeps/unix/sysv/linux/alpha/Makefile
++ (libpthread-shared-only-routines): Add ptw-sysdep,
++ ptw-sigprocmask, ptw-rt_sigaction.
++ * sysdeps/unix/sysv/linux/ia64/Makefile
++ (librt-shared-only-routines): Add rt-sysdep.
++ * sysdeps/unix/sysv/linux/i386/Makefile
++ (libpthread-shared-only-routines): Add libc-do-syscall.
++ * sysdeps/unix/sysv/linux/microblaze/Makefile
++ (libpthread-shared-only-routines): Add sysdep.
++ * sysdeps/unix/sysv/linux/powerpc/Makefile
++ (librt-shared-only-routines): Add rt-sysdep.
++ (libpthread-shared-only-routines): Add sysdep.
++ * sysdeps/unix/sysv/linux/s390/Makefile
++ (librt-shared-only-routines): Add rt-sysdep.
++ * sysdeps/unix/sysv/linux/sparc/Makefile
++ (librt-shared-only-routines): Add rt-sysdep.
++ (libpthread-shared-only-routines): Add sysdep.
++ * sysdeps/unix/sysv/linux/tile/Makefile
++ (libpthread-shared-only-routines): Likewise.
++
++2016-08-05 Aurelien Jarno <aurelien@aurel32.net>
++
++ * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
++ [$(subdir) = math && $(have-as-vis3) = yes] (libm-sysdep_routines):
++ Remove s_fdimf-vis3, s_fdim-vis3.
++ * sysdeps/sparc/sparc32/fpu/s_fdim.S: Delete file.
++ * sysdeps/sparc/sparc32/fpu/s_fdimf.S: Likewise.
++ * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim-vis3.S: Likewise.
++ * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim.S: Likewise.
++ * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdimf-vis3.S: Likewise.
++ * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdimf.S: Likewise.
++ * sysdeps/sparc/sparc32/sparcv9/fpu/s_fdim.S: Likewise.
++ * sysdeps/sparc/sparc32/sparcv9/fpu/s_fdimf.S: Likewise.
++ * sysdeps/sparc/sparc64/fpu/s_fdim.S: Likewise.
++ * sysdeps/sparc/sparc64/fpu/s_fdimf.S: Likewise.
++
++2016-08-02 David S. Miller <davem@davemloft.net>
++
++ * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint-vis3.S
++ (__nearbyint_vis3): Don't check for sNaN before float register is
++ loaded with the incoming argument.
++ * sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf-vis3.S
++ (__nearbyintf_vis3): Likewise.
++ * sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyint.S (__nearbyint):
++ Likewise.
++ * sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyintf.S (__nearbyintf):
++ Likewise.
++
++2016-08-03 Aurelien Jarno <aurelien@aurel32.net>
++
++ * sysdeps/powerpc/ifunc-sel.h (ifunc_sel): Replace beqlr instructions
++ by beq instructions jumping to the end of the function.
++ * sysdeps/powerpc/ifunc-sel.h (ifunc_sel): Add "11", "12", "cr0" to the
++ clobber list. Use "i" constraint instead of "X".
++ (ifunc_one): Add "12" to the clobber list. Use "i" constraint instead
++ of "X".
++
++2016-08-04 Carlos O'Donell <carlos@redhat.com>
++
++ * po/de.po: Update from Translation Project.
++ * po/fi.po: Likewise.
++ * po/sv.po: Likewise.
++
++2016-08-02 Florian Weimer <fweimer@redhat.com>
++
++ [BZ #20370]
++ * malloc/arena.c (get_free_list): Update comment. Assert that
++ arenas on the free list have no attached threads.
++ (remove_from_free_list): New function.
++ (reused_arena): Call it.
++
++2016-08-04 Florian Weimer <fweimer@redhat.com>
++
++ Use sysdep.o from libc.a in static libraries.
++ * sysdeps/unix/sysv/linux/i386/Makefile
++ (libpthread-shared-only-routines): Add sysdep.
++ (librt-shared-only-routines): Likewise.
++
+ 2016-08-01 Carlos O'Donell <carlos@redhat.com>
+
+ * version.h (RELEASE): Set to "stable"
+diff --git a/Makeconfig b/Makeconfig
+index 03fd89c13e..ee379f5852 100644
+--- a/Makeconfig
++++ b/Makeconfig
+@@ -394,6 +394,9 @@ ifndef after-link
+ after-link =
+ endif
+
++# Additional libraries to link into every test.
++link-extra-libs-tests = $(libsupport)
++
+ # Command for linking PIE programs with the C library.
+ ifndef +link-pie
+ +link-pie-before-libc = $(CC) -pie -Wl,-O1 -nostdlib -nostartfiles -o $@ \
+@@ -503,7 +506,7 @@ link-libc = $(link-libc-rpath-link) $(link-libc-before-gnulib) $(gnulib)
+ link-libc-tests = $(link-libc-tests-rpath-link) \
+ $(link-libc-before-gnulib) $(gnulib-tests)
+ # This is how to find at build-time things that will be installed there.
+-rpath-dirs = math elf dlfcn nss nis rt resolv crypt mathvec
++rpath-dirs = math elf dlfcn nss nis rt resolv crypt mathvec support
+ rpath-link = \
+ $(common-objdir):$(subst $(empty) ,:,$(patsubst ../$(subdir),.,$(rpath-dirs:%=$(common-objpfx)%)))
+ else
+@@ -850,7 +853,7 @@ libio-include = -I$(..)libio
+ # List of non-library modules that we build.
+ built-modules = iconvprogs iconvdata ldconfig lddlibc4 libmemusage \
+ libSegFault libpcprofile librpcsvc locale-programs \
+- memusagestat nonlib nscd extramodules libnldbl
++ memusagestat nonlib nscd extramodules libnldbl libsupport
+
+ in-module = $(subst -,_,$(firstword $(libof-$(basename $(@F))) \
+ $(libof-$(<F)) \
+@@ -1089,6 +1092,12 @@ libm = $(common-objpfx)math/libm.a
+ libmvec = $(common-objpfx)mathvec/libmvec.a
+ endif
+
++ifeq ($(build-shared),yes)
++libsupport = $(common-objpfx)support/libsupport_nonshared.a
++else
++libsupport = $(common-objpfx)support/libsupport.a
++endif
++
+ # These are the subdirectories containing the library source. The order
+ # is more or less arbitrary. The sorting step will take care of the
+ # dependencies.
+@@ -1096,7 +1105,7 @@ all-subdirs = csu assert ctype locale intl catgets math setjmp signal \
+ stdlib stdio-common libio malloc string wcsmbs time dirent \
+ grp pwd posix io termios resource misc socket sysvipc gmon \
+ gnulib iconv iconvdata wctype manual shadow gshadow po argp \
+- crypt localedata timezone rt conform debug mathvec \
++ crypt localedata timezone rt conform debug mathvec support \
+ $(add-on-subdirs) dlfcn elf
+
+ ifndef avoid-generated
+diff --git a/NEWS b/NEWS
+index b0447e7169..c4c082b415 100644
+--- a/NEWS
++++ b/NEWS
+@@ -5,6 +5,29 @@ See the end for copying conditions.
+ Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
+ using `glibc' in the "product" field.
+
++Version 2.24.1
++
++Security related changes:
++
++* On ARM EABI (32-bit), generating a backtrace for execution contexts which
++ have been created with makecontext could fail to terminate due to a
++ missing .cantunwind annotation. This has been observed to lead to a hang
++ (denial of service) in some Go applications compiled with gccgo. Reported
++ by Andreas Schwab. (CVE-2016-6323)
++
++* The DNS stub resolver functions would crash due to a NULL pointer
++ dereference when processing a query with a valid DNS question type which
++ was used internally in the implementation. The stub resolver now uses a
++ question type which is outside the range of valid question type values.
++ (CVE-2015-5180)
++
++The following bugs are resolved with this release:
++
++ [21209] Ignore and remove LD_HWCAP_MASK for AT_SECURE programs
++ [21289] Fix symbol redirect for fts_set
++ [21386] Assertion in fork for distinct parent PID is incorrect
++ [21624] Unsafe alloca allows local attackers to alias stack and heap (CVE-2017-1000366)
++
+ Version 2.24
+
+ * The minimum Linux kernel version that this version of the GNU C Library
+diff --git a/Rules b/Rules
+index 8306d36a07..a981965d2b 100644
+--- a/Rules
++++ b/Rules
+@@ -149,6 +149,7 @@ endif
+
+ ifneq "$(strip $(binaries-shared-tests))" ""
+ $(addprefix $(objpfx),$(binaries-shared-tests)): %: %.o \
++ $(link-extra-libs-tests) \
+ $(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
+ $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
+ $(+link-tests)
+@@ -156,6 +157,7 @@ endif
+
+ ifneq "$(strip $(binaries-pie-tests))" ""
+ $(addprefix $(objpfx),$(binaries-pie-tests)): %: %.o \
++ $(link-extra-libs-tests) \
+ $(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
+ $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
+ $(+link-pie-tests)
+@@ -177,6 +179,7 @@ endif
+
+ ifneq "$(strip $(binaries-static-tests))" ""
+ $(addprefix $(objpfx),$(binaries-static-tests)): %: %.o \
++ $(link-extra-libs-tests) \
+ $(sort $(filter $(common-objpfx)lib%,$(link-libc-static-tests))) \
+ $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
+ $(+link-static-tests)
+diff --git a/argp/argp-fmtstream.h b/argp/argp-fmtstream.h
+index bdeaa54dc2..e8c5797f38 100644
+--- a/argp/argp-fmtstream.h
++++ b/argp/argp-fmtstream.h
+@@ -29,21 +29,6 @@
+ #include <string.h>
+ #include <unistd.h>
+
+-#ifndef __attribute__
+-/* This feature is available in gcc versions 2.5 and later. */
+-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || \
+- defined __STRICT_ANSI__
+-# define __attribute__(Spec) /* empty */
+-# endif
+-/* The __-protected variants of `format' and `printf' attributes
+- are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
+-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) || \
+- defined __STRICT_ANSI__
+-# define __format__ format
+-# define __printf__ printf
+-# endif
+-#endif
+-
+ #if defined (__GNU_LIBRARY__) && defined (HAVE_LINEWRAP_H)
+ /* line_wrap_stream is available, so use that. */
+ #define ARGP_FMTSTREAM_USE_LINEWRAP
+@@ -111,6 +96,8 @@ struct argp_fmtstream
+
+ typedef struct argp_fmtstream *argp_fmtstream_t;
+
++__BEGIN_DECLS
++
+ /* Return an argp_fmtstream that outputs to STREAM, and which prefixes lines
+ written on it with LMARGIN spaces and limits them to RMARGIN columns
+ total. If WMARGIN >= 0, words that extend past RMARGIN are wrapped by
+@@ -297,6 +284,8 @@ __argp_fmtstream_point (argp_fmtstream_t __fs)
+
+ #endif /* __OPTIMIZE__ */
+
++__END_DECLS
++
+ #endif /* ARGP_FMTSTREAM_USE_LINEWRAP */
+
+ #endif /* argp-fmtstream.h */
+diff --git a/argp/argp.h b/argp/argp.h
+index e67bbef739..7cb5a69f08 100644
+--- a/argp/argp.h
++++ b/argp/argp.h
+@@ -28,48 +28,12 @@
+ #define __need_error_t
+ #include <errno.h>
+
+-#ifndef __THROW
+-# define __THROW
+-#endif
+-#ifndef __NTH
+-# define __NTH(fct) fct __THROW
+-#endif
+-
+-#ifndef __attribute__
+-/* This feature is available in gcc versions 2.5 and later. */
+-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || \
+- defined __STRICT_ANSI__
+-# define __attribute__(Spec) /* empty */
+-# endif
+-/* The __-protected variants of `format' and `printf' attributes
+- are accepted by gcc versions 2.6.4 (effectively 2.7) and later. */
+-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7) || \
+- defined __STRICT_ANSI__
+-# define __format__ format
+-# define __printf__ printf
+-# endif
+-#endif
+-
+-/* GCC 2.95 and later have "__restrict"; C99 compilers have
+- "restrict", and "configure" may have defined "restrict". */
+-#ifndef __restrict
+-# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
+-# if defined restrict || 199901L <= __STDC_VERSION__
+-# define __restrict restrict
+-# else
+-# define __restrict
+-# endif
+-# endif
+-#endif
+-
+ #ifndef __error_t_defined
+ typedef int error_t;
+ # define __error_t_defined
+ #endif
+
+-#ifdef __cplusplus
+-extern "C" {
+-#endif
++__BEGIN_DECLS
+
+ /* A description of a particular option. A pointer to an array of
+ these is passed in the OPTIONS field of an argp structure. Each option
+@@ -590,8 +554,6 @@ __NTH (__option_is_end (const struct argp_option *__opt))
+ # endif
+ #endif /* Use extern inlines. */
+
+-#ifdef __cplusplus
+-}
+-#endif
++__END_DECLS
+
+ #endif /* argp.h */
+diff --git a/configure b/configure
+index 17625e1041..9b5a486048 100755
+--- a/configure
++++ b/configure
+@@ -6289,12 +6289,14 @@ echo >&5 "libc_undefs='$libc_undefs'"
+ # symbols (resolved by the linker), so filter out unknown symbols.
+ # This will fail to produce the correct result if the compiler
+ # defaults to -fstack-protector but this produces an undefined symbol
+-# other than __stack_chk_fail. However, compilers like that have not
+-# been encountered in practice.
+-libc_undefs=`echo "$libc_undefs" | egrep '^(foobar|__stack_chk_fail)$'`
++# other than __stack_chk_fail or __stack_chk_fail_local. However,
++# compilers like that have not been encountered in practice.
++libc_undefs=`echo "$libc_undefs" | \
++ egrep '^(foobar|__stack_chk_fail|__stack_chk_fail_local)$'`
+ case "$libc_undefs" in
+ foobar) libc_cv_predef_stack_protector=no ;;
+ '__stack_chk_fail
++foobar'|'__stack_chk_fail_local
+ foobar') libc_cv_predef_stack_protector=yes ;;
+ *) as_fn_error $? "unexpected symbols in test: $libc_undefs" "$LINENO" 5 ;;
+ esac
+diff --git a/configure.ac b/configure.ac
+index 33bcd62180..8277d9f727 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -1626,12 +1626,14 @@ echo >&AS_MESSAGE_LOG_FD "libc_undefs='$libc_undefs'"
+ # symbols (resolved by the linker), so filter out unknown symbols.
+ # This will fail to produce the correct result if the compiler
+ # defaults to -fstack-protector but this produces an undefined symbol
+-# other than __stack_chk_fail. However, compilers like that have not
+-# been encountered in practice.
+-libc_undefs=`echo "$libc_undefs" | egrep '^(foobar|__stack_chk_fail)$'`
++# other than __stack_chk_fail or __stack_chk_fail_local. However,
++# compilers like that have not been encountered in practice.
++libc_undefs=`echo "$libc_undefs" | \
++ egrep '^(foobar|__stack_chk_fail|__stack_chk_fail_local)$'`
+ case "$libc_undefs" in
+ foobar) libc_cv_predef_stack_protector=no ;;
+ '__stack_chk_fail
++foobar'|'__stack_chk_fail_local
+ foobar') libc_cv_predef_stack_protector=yes ;;
+ *) AC_MSG_ERROR([unexpected symbols in test: $libc_undefs]) ;;
+ esac],
+diff --git a/conform/Makefile b/conform/Makefile
+index 32a0937b06..762aac98fc 100644
+--- a/conform/Makefile
++++ b/conform/Makefile
+@@ -229,6 +229,7 @@ $(linknamespace-symlist-stdlibs-tests): $(objpfx)symlist-stdlibs-%: \
+
+ $(linknamespace-header-tests): $(objpfx)%/linknamespace.out: \
+ linknamespace.pl \
++ $(linknamespace-symlists-tests) \
+ $(linknamespace-symlist-stdlibs-tests)
+ (set -e; std_hdr=$*; std=$${std_hdr%%/*}; hdr=$${std_hdr#*/}; \
+ mkdir -p $(@D)/scratch; \
+diff --git a/elf/Makefile b/elf/Makefile
+index 593403c640..847a012f84 100644
+--- a/elf/Makefile
++++ b/elf/Makefile
+@@ -149,7 +149,8 @@ tests += loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
+ tst-nodelete) \
+ tst-initorder tst-initorder2 tst-relsort1 tst-null-argv \
+ tst-ptrguard1 tst-tlsalign tst-tlsalign-extern tst-nodelete-opened \
+- tst-nodelete2 tst-audit11 tst-audit12 tst-dlsym-error
++ tst-nodelete2 tst-audit11 tst-audit12 tst-dlsym-error \
++ tst-nodelete-dlclose
+ # reldep9
+ ifeq ($(build-hardcoded-path-in-tests),yes)
+ tests += tst-dlopen-aout
+@@ -223,7 +224,8 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
+ tst-array5dep tst-null-argv-lib \
+ tst-tlsalign-lib tst-nodelete-opened-lib tst-nodelete2mod \
+ tst-audit11mod1 tst-audit11mod2 tst-auditmod11 \
+- tst-audit12mod1 tst-audit12mod2 tst-audit12mod3 tst-auditmod12
++ tst-audit12mod1 tst-audit12mod2 tst-audit12mod3 tst-auditmod12 \
++ tst-nodelete-dlclose-dso tst-nodelete-dlclose-plugin
+ ifeq (yes,$(have-mtls-dialect-gnu2))
+ tests += tst-gnu2-tls1
+ modules-names += tst-gnu2-tls1mod
+@@ -1267,3 +1269,12 @@ $(objpfx)tst-ldconfig-X.out : tst-ldconfig-X.sh $(objpfx)ldconfig
+ $(evaluate-test)
+
+ $(objpfx)tst-dlsym-error: $(libdl)
++
++# The application depends on the DSO, and the DSO loads the plugin.
++# The plugin also depends on the DSO. This creates the circular
++# dependency via dlopen that we're testing to make sure works.
++$(objpfx)tst-nodelete-dlclose-dso.so: $(libdl)
++$(objpfx)tst-nodelete-dlclose-plugin.so: $(objpfx)tst-nodelete-dlclose-dso.so
++$(objpfx)tst-nodelete-dlclose: $(objpfx)tst-nodelete-dlclose-dso.so
++$(objpfx)tst-nodelete-dlclose.out: $(objpfx)tst-nodelete-dlclose-dso.so \
++ $(objpfx)tst-nodelete-dlclose-plugin.so
+diff --git a/elf/dl-close.c b/elf/dl-close.c
+index 687d7de874..9f93ab7628 100644
+--- a/elf/dl-close.c
++++ b/elf/dl-close.c
+@@ -805,19 +805,37 @@ _dl_close (void *_map)
+ {
+ struct link_map *map = _map;
+
+- /* First see whether we can remove the object at all. */
++ /* We must take the lock to examine the contents of map and avoid
++ concurrent dlopens. */
++ __rtld_lock_lock_recursive (GL(dl_load_lock));
++
++ /* At this point we are guaranteed nobody else is touching the list of
++ loaded maps, but a concurrent dlclose might have freed our map
++ before we took the lock. There is no way to detect this (see below)
++ so we proceed assuming this isn't the case. First see whether we
++ can remove the object at all. */
+ if (__glibc_unlikely (map->l_flags_1 & DF_1_NODELETE))
+ {
+- assert (map->l_init_called);
+ /* Nope. Do nothing. */
++ __rtld_lock_unlock_recursive (GL(dl_load_lock));
+ return;
+ }
+
++ /* At present this is an unreliable check except in the case where the
++ caller has recursively called dlclose and we are sure the link map
++ has not been freed. In a non-recursive dlclose the map itself
++ might have been freed and this access is potentially a data race
++ with whatever other use this memory might have now, or worse we
++ might silently corrupt memory if it looks enough like a link map.
++ POSIX has language in dlclose that appears to guarantee that this
++ should be a detectable case and given that dlclose should be threadsafe
++ we need this to be a reliable detection.
++ This is bug 20990. */
+ if (__builtin_expect (map->l_direct_opencount, 1) == 0)
+- GLRO(dl_signal_error) (0, map->l_name, NULL, N_("shared object not open"));
+-
+- /* Acquire the lock. */
+- __rtld_lock_lock_recursive (GL(dl_load_lock));
++ {
++ __rtld_lock_unlock_recursive (GL(dl_load_lock));
++ _dl_signal_error (0, map->l_name, NULL, N_("shared object not open"));
++ }
+
+ _dl_close_worker (map, false);
+
+diff --git a/elf/rtld.c b/elf/rtld.c
+index 647661ca45..8f56d6edd3 100644
+--- a/elf/rtld.c
++++ b/elf/rtld.c
+@@ -99,14 +99,121 @@ uintptr_t __pointer_chk_guard_local
+ strong_alias (__pointer_chk_guard_local, __pointer_chk_guard)
+ #endif
+
++/* Length limits for names and paths, to protect the dynamic linker,
++ particularly when __libc_enable_secure is active. */
++#ifdef NAME_MAX
++# define SECURE_NAME_LIMIT NAME_MAX
++#else
++# define SECURE_NAME_LIMIT 255
++#endif
++#ifdef PATH_MAX
++# define SECURE_PATH_LIMIT PATH_MAX
++#else
++# define SECURE_PATH_LIMIT 1024
++#endif
++
++/* Check that AT_SECURE=0, or that the passed name does not contain
++ directories and is not overly long. Reject empty names
++ unconditionally. */
++static bool
++dso_name_valid_for_suid (const char *p)
++{
++ if (__glibc_unlikely (__libc_enable_secure))
++ {
++ /* Ignore pathnames with directories for AT_SECURE=1
++ programs, and also skip overlong names. */
++ size_t len = strlen (p);
++ if (len >= SECURE_NAME_LIMIT || memchr (p, '/', len) != NULL)
++ return false;
++ }
++ return *p != '\0';
++}
+
+-/* List of auditing DSOs. */
++/* LD_AUDIT variable contents. Must be processed before the
++ audit_list below. */
++const char *audit_list_string;
++
++/* Cyclic list of auditing DSOs. audit_list->next is the first
++ element. */
+ static struct audit_list
+ {
+ const char *name;
+ struct audit_list *next;
+ } *audit_list;
+
++/* Iterator for audit_list_string followed by audit_list. */
++struct audit_list_iter
++{
++ /* Tail of audit_list_string still needing processing, or NULL. */
++ const char *audit_list_tail;
++
++ /* The list element returned in the previous iteration. NULL before
++ the first element. */
++ struct audit_list *previous;
++
++ /* Scratch buffer for returning a name which is part of
++ audit_list_string. */
++ char fname[SECURE_NAME_LIMIT];
++};
++
++/* Initialize an audit list iterator. */
++static void
++audit_list_iter_init (struct audit_list_iter *iter)
++{
++ iter->audit_list_tail = audit_list_string;
++ iter->previous = NULL;
++}
++
++/* Iterate through both audit_list_string and audit_list. */
++static const char *
++audit_list_iter_next (struct audit_list_iter *iter)
++{
++ if (iter->audit_list_tail != NULL)
++ {
++ /* First iterate over audit_list_string. */
++ while (*iter->audit_list_tail != '\0')
++ {
++ /* Split audit list at colon. */
++ size_t len = strcspn (iter->audit_list_tail, ":");
++ if (len > 0 && len < sizeof (iter->fname))
++ {
++ memcpy (iter->fname, iter->audit_list_tail, len);
++ iter->fname[len] = '\0';
++ }
++ else
++ /* Do not return this name to the caller. */
++ iter->fname[0] = '\0';
++
++ /* Skip over the substring and the following delimiter. */
++ iter->audit_list_tail += len;
++ if (*iter->audit_list_tail == ':')
++ ++iter->audit_list_tail;
++
++ /* If the name is valid, return it. */
++ if (dso_name_valid_for_suid (iter->fname))
++ return iter->fname;
++ /* Otherwise, wrap around and try the next name. */
++ }
++ /* Fall through to the procesing of audit_list. */
++ }
++
++ if (iter->previous == NULL)
++ {
++ if (audit_list == NULL)
++ /* No pre-parsed audit list. */
++ return NULL;
++ /* Start of audit list. The first list element is at
++ audit_list->next (cyclic list). */
++ iter->previous = audit_list->next;
++ return iter->previous->name;
++ }
++ if (iter->previous == audit_list)
++ /* Cyclic list wrap-around. */
++ return NULL;
++ iter->previous = iter->previous->next;
++ return iter->previous->name;
++}
++
+ #ifndef HAVE_INLINED_SYSCALLS
+ /* Set nonzero during loading and initialization of executable and
+ libraries, cleared before the executable's entry point runs. This
+@@ -730,6 +837,42 @@ static const char *preloadlist attribute_relro;
+ /* Nonzero if information about versions has to be printed. */
+ static int version_info attribute_relro;
+
++/* The LD_PRELOAD environment variable gives list of libraries
++ separated by white space or colons that are loaded before the
++ executable's dependencies and prepended to the global scope list.
++ (If the binary is running setuid all elements containing a '/' are
++ ignored since it is insecure.) Return the number of preloads
++ performed. */
++unsigned int
++handle_ld_preload (const char *preloadlist, struct link_map *main_map)
++{
++ unsigned int npreloads = 0;
++ const char *p = preloadlist;
++ char fname[SECURE_PATH_LIMIT];
++
++ while (*p != '\0')
++ {
++ /* Split preload list at space/colon. */
++ size_t len = strcspn (p, " :");
++ if (len > 0 && len < sizeof (fname))
++ {
++ memcpy (fname, p, len);
++ fname[len] = '\0';
++ }
++ else
++ fname[0] = '\0';
++
++ /* Skip over the substring and the following delimiter. */
++ p += len;
++ if (*p != '\0')
++ ++p;
++
++ if (dso_name_valid_for_suid (fname))
++ npreloads += do_preload (fname, main_map, "LD_PRELOAD");
++ }
++ return npreloads;
++}
++
+ static void
+ dl_main (const ElfW(Phdr) *phdr,
+ ElfW(Word) phnum,
+@@ -1257,11 +1400,13 @@ of this helper program; chances are you did not intend to run this program.\n\
+ GL(dl_rtld_map).l_tls_modid = _dl_next_tls_modid ();
+
+ /* If we have auditing DSOs to load, do it now. */
+- if (__glibc_unlikely (audit_list != NULL))
++ bool need_security_init = true;
++ if (__glibc_unlikely (audit_list != NULL)
++ || __glibc_unlikely (audit_list_string != NULL))
+ {
+- /* Iterate over all entries in the list. The order is important. */
+ struct audit_ifaces *last_audit = NULL;
+- struct audit_list *al = audit_list->next;
++ struct audit_list_iter al_iter;
++ audit_list_iter_init (&al_iter);
+
+ /* Since we start using the auditing DSOs right away we need to
+ initialize the data structures now. */
+@@ -1272,9 +1417,14 @@ of this helper program; chances are you did not intend to run this program.\n\
+ use different values (especially the pointer guard) and will
+ fail later on. */
+ security_init ();
++ need_security_init = false;
+
+- do
++ while (true)
+ {
++ const char *name = audit_list_iter_next (&al_iter);
++ if (name == NULL)
++ break;
++
+ int tls_idx = GL(dl_tls_max_dtv_idx);
+
+ /* Now it is time to determine the layout of the static TLS
+@@ -1283,7 +1433,7 @@ of this helper program; chances are you did not intend to run this program.\n\
+ no DF_STATIC_TLS bit is set. The reason is that we know
+ glibc will use the static model. */
+ struct dlmopen_args dlmargs;
+- dlmargs.fname = al->name;
++ dlmargs.fname = name;
+ dlmargs.map = NULL;
+
+ const char *objname;
+@@ -1296,7 +1446,7 @@ of this helper program; chances are you did not intend to run this program.\n\
+ not_loaded:
+ _dl_error_printf ("\
+ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n",
+- al->name, err_str);
++ name, err_str);
+ if (malloced)
+ free ((char *) err_str);
+ }
+@@ -1400,10 +1550,7 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n",
+ goto not_loaded;
+ }
+ }
+-
+- al = al->next;
+ }
+- while (al != audit_list->next);
+
+ /* If we have any auditing modules, announce that we already
+ have two objects loaded. */
+@@ -1481,23 +1628,8 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n",
+
+ if (__glibc_unlikely (preloadlist != NULL))
+ {
+- /* The LD_PRELOAD environment variable gives list of libraries
+- separated by white space or colons that are loaded before the
+- executable's dependencies and prepended to the global scope
+- list. If the binary is running setuid all elements
+- containing a '/' are ignored since it is insecure. */
+- char *list = strdupa (preloadlist);
+- char *p;
+-
+ HP_TIMING_NOW (start);
+-
+- /* Prevent optimizing strsep. Speed is not important here. */
+- while ((p = (strsep) (&list, " :")) != NULL)
+- if (p[0] != '\0'
+- && (__builtin_expect (! __libc_enable_secure, 1)
+- || strchr (p, '/') == NULL))
+- npreloads += do_preload (p, main_map, "LD_PRELOAD");
+-
++ npreloads += handle_ld_preload (preloadlist, main_map);
+ HP_TIMING_NOW (stop);
+ HP_TIMING_DIFF (diff, start, stop);
+ HP_TIMING_ACCUM_NT (load_time, diff);
+@@ -1682,7 +1814,7 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n",
+ if (tcbp == NULL)
+ tcbp = init_tls ();
+
+- if (__glibc_likely (audit_list == NULL))
++ if (__glibc_likely (need_security_init))
+ /* Initialize security features. But only if we have not done it
+ earlier. */
+ security_init ();
+@@ -2313,9 +2445,7 @@ process_dl_audit (char *str)
+ char *p;
+
+ while ((p = (strsep) (&str, ":")) != NULL)
+- if (p[0] != '\0'
+- && (__builtin_expect (! __libc_enable_secure, 1)
+- || strchr (p, '/') == NULL))
++ if (dso_name_valid_for_suid (p))
+ {
+ /* This is using the local malloc, not the system malloc. The
+ memory can never be freed. */
+@@ -2379,7 +2509,7 @@ process_envvars (enum mode *modep)
+ break;
+ }
+ if (memcmp (envline, "AUDIT", 5) == 0)
+- process_dl_audit (&envline[6]);
++ audit_list_string = &envline[6];
+ break;
+
+ case 7:
+@@ -2423,7 +2553,8 @@ process_envvars (enum mode *modep)
+
+ case 10:
+ /* Mask for the important hardware capabilities. */
+- if (memcmp (envline, "HWCAP_MASK", 10) == 0)
++ if (!__libc_enable_secure
++ && memcmp (envline, "HWCAP_MASK", 10) == 0)
+ GLRO(dl_hwcap_mask) = __strtoul_internal (&envline[11], NULL,
+ 0, 0);
+ break;
+@@ -2437,7 +2568,8 @@ process_envvars (enum mode *modep)
+
+ case 12:
+ /* The library search path. */
+- if (memcmp (envline, "LIBRARY_PATH", 12) == 0)
++ if (!__libc_enable_secure
++ && memcmp (envline, "LIBRARY_PATH", 12) == 0)
+ {
+ library_path = &envline[13];
+ break;
+diff --git a/elf/tst-nodelete-dlclose-dso.c b/elf/tst-nodelete-dlclose-dso.c
+new file mode 100644
+index 0000000000..dd930f99cc
+--- /dev/null
++++ b/elf/tst-nodelete-dlclose-dso.c
+@@ -0,0 +1,90 @@
++/* Bug 11941: Improper assert map->l_init_called in dlclose.
++ Copyright (C) 2016 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++/* This is the primary DSO that is loaded by the appliation. This DSO
++ then loads a plugin with RTLD_NODELETE. This plugin depends on this
++ DSO. This dependency chain means that at application shutdown the
++ plugin will be destructed first. Thus by the time this DSO is
++ destructed we will be calling dlclose on an object that has already
++ been destructed. It is allowed to call dlclose in this way and
++ should not assert. */
++#include <stdio.h>
++#include <stdlib.h>
++#include <dlfcn.h>
++
++/* Plugin to load. */
++static void *plugin_lib = NULL;
++/* Plugin function. */
++static void (*plugin_func) (void);
++#define LIB_PLUGIN "tst-nodelete-dlclose-plugin.so"
++
++/* This function is never called but the plugin references it.
++ We do this to avoid any future --as-needed from removing the
++ plugin's DT_NEEDED on this DSO (required for the test). */
++void
++primary_reference (void)
++{
++ printf ("INFO: Called primary_reference function.\n");
++}
++
++void
++primary (void)
++{
++ char *error;
++
++ plugin_lib = dlopen (LIB_PLUGIN, RTLD_NOW | RTLD_LOCAL | RTLD_NODELETE);
++ if (plugin_lib == NULL)
++ {
++ printf ("ERROR: Unable to load plugin library.\n");
++ exit (EXIT_FAILURE);
++ }
++ dlerror ();
++
++ plugin_func = (void (*) (void)) dlsym (plugin_lib, "plugin_func");
++ error = dlerror ();
++ if (error != NULL)
++ {
++ printf ("ERROR: Unable to find symbol with error \"%s\".",
++ error);
++ exit (EXIT_FAILURE);
++ }
++
++ return;
++}
++
++__attribute__ ((destructor))
++static void
++primary_dtor (void)
++{
++ int ret;
++
++ printf ("INFO: Calling primary destructor.\n");
++
++ /* The destructor runs in the test driver also, which
++ hasn't called primary, in that case do nothing. */
++ if (plugin_lib == NULL)
++ return;
++
++ ret = dlclose (plugin_lib);
++ if (ret != 0)
++ {
++ printf ("ERROR: Calling dlclose failed with \"%s\"\n",
++ dlerror ());
++ exit (EXIT_FAILURE);
++ }
++}
+diff --git a/elf/tst-nodelete-dlclose-plugin.c b/elf/tst-nodelete-dlclose-plugin.c
+new file mode 100644
+index 0000000000..8b295c1718
+--- /dev/null
++++ b/elf/tst-nodelete-dlclose-plugin.c
+@@ -0,0 +1,40 @@
++/* Bug 11941: Improper assert map->l_init_called in dlclose.
++ Copyright (C) 2016 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++/* This DSO simulates a plugin with a dependency on the
++ primary DSO loaded by the appliation. */
++#include <stdio.h>
++
++extern void primary_reference (void);
++
++void
++plugin_func (void)
++{
++ printf ("INFO: Calling plugin function.\n");
++ /* Need a reference to the DSO to ensure that a potential --as-needed
++ doesn't remove the DT_NEEDED entry which we rely upon to ensure
++ destruction ordering. */
++ primary_reference ();
++}
++
++__attribute__ ((destructor))
++static void
++plugin_dtor (void)
++{
++ printf ("INFO: Calling plugin destructor.\n");
++}
+diff --git a/elf/tst-nodelete-dlclose.c b/elf/tst-nodelete-dlclose.c
+new file mode 100644
+index 0000000000..b3d07e1849
+--- /dev/null
++++ b/elf/tst-nodelete-dlclose.c
+@@ -0,0 +1,36 @@
++/* Bug 11941: Improper assert map->l_init_called in dlclose.
++ Copyright (C) 2016 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++/* This simulates an application using the primary DSO which loads the
++ plugin DSO. */
++#include <stdio.h>
++#include <stdlib.h>
++
++extern void primary (void);
++
++static int
++do_test (void)
++{
++ printf ("INFO: Starting application.\n");
++ primary ();
++ printf ("INFO: Exiting application.\n");
++ return 0;
++}
++
++#define TEST_FUNCTION do_test ()
++#include "../test-skeleton.c"
+diff --git a/extra-lib.mk b/extra-lib.mk
+index b10748d185..2552049135 100644
+--- a/extra-lib.mk
++++ b/extra-lib.mk
+@@ -5,6 +5,9 @@
+ # The variable $($(lib)-routines) defines the list of modules
+ # to be included in that library. A sysdep Makefile can add to
+ # $(lib)-sysdep_routines to include additional modules.
++#
++# Libraries listed in $(extra-libs-noinstall) are built, but not
++# installed.
+
+ lib := $(firstword $(extra-libs-left))
+ extra-libs-left := $(filter-out $(lib),$(extra-libs-left))
+@@ -28,7 +31,9 @@ extra-objs := $(extra-objs)
+ all-$(lib)-routines := $($(lib)-routines) $($(lib)-sysdep_routines)
+
+ # Add each flavor of library to the lists of things to build and install.
++ifeq (,$(filter $(lib), $(extra-libs-noinstall)))
+ install-lib += $(foreach o,$(object-suffixes-$(lib)),$(lib:lib%=$(libtype$o)))
++endif
+ extra-objs += $(foreach o,$(filter-out .os .oS,$(object-suffixes-$(lib))),\
+ $(patsubst %,%$o,$(filter-out \
+ $($(lib)-shared-only-routines),\
+diff --git a/iconv/gconv.h b/iconv/gconv.h
+index 8d8ce5813b..a87028047b 100644
+--- a/iconv/gconv.h
++++ b/iconv/gconv.h
+@@ -139,7 +139,7 @@ typedef struct __gconv_info
+ {
+ size_t __nsteps;
+ struct __gconv_step *__steps;
+- __extension__ struct __gconv_step_data __data __flexarr;
++ __extension__ struct __gconv_step_data __data[0];
+ } *__gconv_t;
+
+ /* Transliteration using the locale's data. */
+diff --git a/include/arpa/nameser_compat.h b/include/arpa/nameser_compat.h
+index 2e735ede4c..7c0deed9ae 100644
+--- a/include/arpa/nameser_compat.h
++++ b/include/arpa/nameser_compat.h
+@@ -1,8 +1,8 @@
+ #ifndef _ARPA_NAMESER_COMPAT_
+ #include <resolv/arpa/nameser_compat.h>
+
+-/* Picksome unused number to represent lookups of IPv4 and IPv6 (i.e.,
+- T_A and T_AAAA). */
+-#define T_UNSPEC 62321
++/* The number is outside the 16-bit RR type range and is used
++ internally by the implementation. */
++#define T_QUERY_A_AND_AAAA 439963904
+
+ #endif
+diff --git a/io/fts.h b/io/fts.h
+index 127a0d2721..b6b45206c8 100644
+--- a/io/fts.h
++++ b/io/fts.h
+@@ -193,7 +193,7 @@ FTS *__REDIRECT (fts_open, (char * const *, int,
+ int (*)(const FTSENT **, const FTSENT **)),
+ fts64_open);
+ FTSENT *__REDIRECT (fts_read, (FTS *), fts64_read);
+-int __REDIRECT (fts_set, (FTS *, FTSENT *, int), fts64_set) __THROW;
++int __REDIRECT_NTH (fts_set, (FTS *, FTSENT *, int), fts64_set);
+ # else
+ # define fts_children fts64_children
+ # define fts_close fts64_close
+diff --git a/localedata/ChangeLog b/localedata/ChangeLog
+index 4be8afc110..a7688e3df6 100644
+--- a/localedata/ChangeLog
++++ b/localedata/ChangeLog
+@@ -1,3 +1,17 @@
++2017-06-11 Santhosh Thottingal <santhosh.thottingal@gmail.com>
++
++ [BZ #19922]
++ * locales/iso14651_t1_common: Add collation rules for U+07DA to U+07DF.
++
++ [BZ #19919]
++ * locales/iso14651_t1_common: Correct collation of U+0D36 and U+0D37.
++
++2016-12-30 Mike Frysinger <vapier@gentoo.org>
++
++ [BZ #20974]
++ * localedata/bs_BA (LC_MESSAGES): Delete "*." from the end of
++ yesexpr and noexpr.
++
+ 2016-07-07 Aurelien Jarno <aurelien@aurel32.net>
+
+ * locales/de_LI (postal_fmt): Fix indentation.
+diff --git a/localedata/locales/bs_BA b/localedata/locales/bs_BA
+index a47f87eb37..68c2f9471a 100644
+--- a/localedata/locales/bs_BA
++++ b/localedata/locales/bs_BA
+@@ -148,8 +148,8 @@ copy "en_DK"
+ END LC_CTYPE
+
+ LC_MESSAGES
+-yesexpr "<U005E><U005B><U002B><U0031><U0064><U0044><U0079><U0059><U005D><U002A><U002E>"
+-noexpr "<U005E><U005B><U002D><U0030><U006E><U004E><U005D><U002A><U002E>"
++yesexpr "<U005E><U005B><U002B><U0031><U0064><U0044><U0079><U0059><U005D>"
++noexpr "<U005E><U005B><U002D><U0030><U006E><U004E><U005D>"
+ yesstr "<U0064><U0061>"
+ nostr "<U006E><U0065>"
+ END LC_MESSAGES
+diff --git a/localedata/locales/iso14651_t1_common b/localedata/locales/iso14651_t1_common
+index eef75ba65e..0e64f26a12 100644
+--- a/localedata/locales/iso14651_t1_common
++++ b/localedata/locales/iso14651_t1_common
+@@ -1042,9 +1042,9 @@ collating-element <ml-bh> from "<U0D2D><U0D4D>"
+ collating-element <ml-m> from "<U0D2E><U0D4D>"
+ collating-element <ml-y> from "<U0D2F><U0D4D>"
+ collating-element <ml-v> from "<U0D35><U0D4D>"
+-collating-element <ml-s> from "<U0D38><U0D4D>"
+ collating-element <ml-ss> from "<U0D36><U0D4D>"
+ collating-element <ml-sh> from "<U0D37><U0D4D>"
++collating-element <ml-s> from "<U0D38><U0D4D>"
+ collating-element <ml-h> from "<U0D39><U0D4D>"
+ collating-element <ml-zh> from "<U0D34><U0D4D>"
+ collating-element <ml-rr> from "<U0D31><U0D4D>"
+@@ -1103,8 +1103,8 @@ collating-symbol <ml-rra>
+ collating-symbol <ml-la>
+ collating-symbol <ml-lla>
+ collating-symbol <ml-va>
+-collating-symbol <ml-sha>
+ collating-symbol <ml-ssa>
++collating-symbol <ml-sha>
+ collating-symbol <ml-sa>
+ collating-symbol <ml-ha>
+ collating-symbol <ml-avagrah>
+@@ -1126,6 +1126,12 @@ collating-symbol <mlvs-o>
+ collating-symbol <mlvs-au>
+ collating-symbol <ml-visarga>
+ collating-symbol <ml-virama>
++collating-symbol <ml-atomic-chillu-k>
++collating-symbol <ml-atomic-chillu-n>
++collating-symbol <ml-atomic-chillu-nn>
++collating-symbol <ml-atomic-chillu-l>
++collating-symbol <ml-atomic-chillu-ll>
++collating-symbol <ml-atomic-chillu-r>
+ #
+ # <BENGALI>
+ #
+@@ -4552,6 +4558,12 @@ collating-symbol <TIB-subA>
+ <mlvs-o>
+ <mlvs-au>
+ <ml-visarga>
++<ml-atomic-chillu-k>
++<ml-atomic-chillu-n>
++<ml-atomic-chillu-nn>
++<ml-atomic-chillu-l>
++<ml-atomic-chillu-ll>
++<ml-atomic-chillu-r>
+ #
+ # <BENGALI>
+ #
+@@ -7252,6 +7264,7 @@ order_start <MALAYALAM>;forward;forward;forward;forward,position
+ <U0D13> <mlvw-o>;<BAS>;<MIN>;IGNORE
+ <U0D14> <mlvw-au>;<BAS>;<MIN>;IGNORE
+ <ml-chillu-k> "<ml-ka><ml-virama>";<BAS>;<MIN>;IGNORE
++<U0D7F> "<ml-ka><ml-virama>";<ml-atomic-chillu-k>;<MIN>;IGNORE
+ <U0D15> "<ml-ka><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+ <ml-kh> "<ml-kha><ml-virama>";<BAS>;<MIN>;IGNORE
+ <U0D16> "<ml-kha><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+@@ -7280,6 +7293,7 @@ order_start <MALAYALAM>;forward;forward;forward;forward,position
+ <ml-dh> "<ml-dha><ml-virama>";<BAS>;<MIN>;IGNORE
+ <U0D22> "<ml-dha><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+ <ml-chillu-nn> "<ml-nna><ml-virama>";<BAS>;<MIN>;IGNORE # ണ്‍ = ണ + ് + zwj
++<U0D7A> "<ml-nna><ml-virama>";<ml-atomic-chillu-nn>;<MIN>;IGNORE
+ <U0D23> "<ml-nna><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE # ണ = ണ + ് + അ
+ <ml-th> "<ml-tha><ml-virama>";<BAS>;<MIN>;IGNORE
+ <U0D24> "<ml-tha><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+@@ -7290,6 +7304,7 @@ order_start <MALAYALAM>;forward;forward;forward;forward,position
+ <ml-ddh> "<ml-ddha><ml-virama>";<BAS>;<MIN>;IGNORE
+ <U0D27> "<ml-ddha><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+ <ml-chillu-n> "<ml-na><ml-virama>";<BAS>;<MIN>;IGNORE # ന്‍= ന + ് + zwj
++<U0D7B> "<ml-na><ml-virama>";<ml-atomic-chillu-n>;<MIN>;IGNORE
+ <U0D28> "<ml-na><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE #ന = ന + ് + അ
+ <ml-p> "<ml-pa><ml-virama>";<BAS>;<MIN>;IGNORE
+ <U0D2A> "<ml-pa><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+@@ -7305,20 +7320,23 @@ order_start <MALAYALAM>;forward;forward;forward;forward,position
+ <ml-y> "<ml-ya><ml-virama>";<BAS>;<MIN>;IGNORE
+ <U0D2F> "<ml-ya><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+ <ml-chillu-r> "<ml-ra><ml-virama>";<BAS>;<MIN>;IGNORE # ര = ര + ് + zwj
++<U0D7C> "<ml-ra><ml-virama>";<ml-atomic-chillu-r>;<MIN>;IGNORE
+ <U0D30> "<ml-ra><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE # ര = ര + ് + അ
+ <ml-chillu-l> <ml-la>;<BAS>;<MIN>;IGNORE # ല്‍ = ല + ് + zwj
++<U0D7D> "<ml-la><ml-virama>";<ml-atomic-chillu-l>;<MIN>;IGNORE
+ <U0D32> "<ml-la><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE # ല = ല + ് + അ
+ <ml-v> "<ml-va><ml-virama>";<BAS>;<MIN>;IGNORE
+ <U0D35> "<ml-va><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+ <ml-ss> "<ml-ssa><ml-virama>";<BAS>;<MIN>;IGNORE
+-<U0D37> "<ml-ssa><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
++<U0D36> "<ml-ssa><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+ <ml-sh> "<ml-sha><ml-virama>";<BAS>;<MIN>;IGNORE
+-<U0D36> "<ml-sha><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
++<U0D37> "<ml-sha><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+ <ml-s> "<ml-sa><ml-virama>";<BAS>;<MIN>;IGNORE
+ <U0D38> "<ml-sa><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+ <ml-h> "<ml-ha><ml-virama>";<BAS>;<MIN>;IGNORE
+ <U0D39> "<ml-ha><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+ <ml-chillu-ll> "<ml-lla><ml-virama>";<BAS>;<MIN>;IGNORE # ള്‍ = ള + ് + zwj
++<U0D7E> "<ml-lla><ml-virama>";<ml-atomic-chillu-ll>;<MIN>;IGNORE
+ <U0D33> "<ml-lla><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE # ള = ള + ് + അ
+ <ml-zh> "<ml-zha><ml-virama>";<BAS>;<MIN>;IGNORE
+ <U0D34> "<ml-zha><ml-virama><mlvw-shorta>";<BAS>;<MIN>;IGNORE
+diff --git a/malloc/arena.c b/malloc/arena.c
+index 229783f3b7..4e16593d8b 100644
+--- a/malloc/arena.c
++++ b/malloc/arena.c
+@@ -702,8 +702,7 @@ _int_new_arena (size_t size)
+ }
+
+
+-/* Remove an arena from free_list. The arena may be in use because it
+- was attached concurrently to a thread by reused_arena below. */
++/* Remove an arena from free_list. */
+ static mstate
+ get_free_list (void)
+ {
+@@ -718,7 +717,8 @@ get_free_list (void)
+ free_list = result->next_free;
+
+ /* The arena will be attached to this thread. */
+- ++result->attached_threads;
++ assert (result->attached_threads == 0);
++ result->attached_threads = 1;
+
+ detach_arena (replaced_arena);
+ }
+@@ -735,6 +735,26 @@ get_free_list (void)
+ return result;
+ }
+
++/* Remove the arena from the free list (if it is present).
++ free_list_lock must have been acquired by the caller. */
++static void
++remove_from_free_list (mstate arena)
++{
++ mstate *previous = &free_list;
++ for (mstate p = free_list; p != NULL; p = p->next_free)
++ {
++ assert (p->attached_threads == 0);
++ if (p == arena)
++ {
++ /* Remove the requested arena from the list. */
++ *previous = p->next_free;
++ break;
++ }
++ else
++ previous = &p->next_free;
++ }
++}
++
+ /* Lock and return an arena that can be reused for memory allocation.
+ Avoid AVOID_ARENA as we have already failed to allocate memory in
+ it and it is currently locked. */
+@@ -782,14 +802,25 @@ reused_arena (mstate avoid_arena)
+ (void) mutex_lock (&result->mutex);
+
+ out:
+- /* Attach the arena to the current thread. Note that we may have
+- selected an arena which was on free_list. */
++ /* Attach the arena to the current thread. */
+ {
+ /* Update the arena thread attachment counters. */
+ mstate replaced_arena = thread_arena;
+ (void) mutex_lock (&free_list_lock);
+ detach_arena (replaced_arena);
++
++ /* We may have picked up an arena on the free list. We need to
++ preserve the invariant that no arena on the free list has a
++ positive attached_threads counter (otherwise,
++ arena_thread_freeres cannot use the counter to determine if the
++ arena needs to be put on the free list). We unconditionally
++ remove the selected arena from the free list. The caller of
++ reused_arena checked the free list and observed it to be empty,
++ so the list is very short. */
++ remove_from_free_list (result);
++
+ ++result->attached_threads;
++
+ (void) mutex_unlock (&free_list_lock);
+ }
+
+diff --git a/nptl/Makefile b/nptl/Makefile
+index 0d8aadebed..fa925819ca 100644
+--- a/nptl/Makefile
++++ b/nptl/Makefile
+@@ -268,7 +268,7 @@ tests = tst-typesizes \
+ tst-flock1 tst-flock2 \
+ tst-signal1 tst-signal2 tst-signal3 tst-signal4 tst-signal5 \
+ tst-signal6 tst-signal7 \
+- tst-exec1 tst-exec2 tst-exec3 tst-exec4 \
++ tst-exec1 tst-exec2 tst-exec3 tst-exec4 tst-exec5 \
+ tst-exit1 tst-exit2 tst-exit3 \
+ tst-stdio1 tst-stdio2 \
+ tst-stack1 tst-stack2 tst-stack3 tst-stack4 tst-pthread-getattr \
+diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c
+index 6b42b11d5a..7365ca606b 100644
+--- a/nptl/allocatestack.c
++++ b/nptl/allocatestack.c
+@@ -440,9 +440,6 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp,
+ SETUP_THREAD_SYSINFO (pd);
+ #endif
+
+- /* The process ID is also the same as that of the caller. */
+- pd->pid = THREAD_GETMEM (THREAD_SELF, pid);
+-
+ /* Don't allow setxid until cloned. */
+ pd->setxid_futex = -1;
+
+@@ -579,9 +576,6 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp,
+ /* Don't allow setxid until cloned. */
+ pd->setxid_futex = -1;
+
+- /* The process ID is also the same as that of the caller. */
+- pd->pid = THREAD_GETMEM (THREAD_SELF, pid);
+-
+ /* Allocate the DTV for this thread. */
+ if (_dl_allocate_tls (TLS_TPADJ (pd)) == NULL)
+ {
+@@ -875,9 +869,6 @@ __reclaim_stacks (void)
+ /* This marks the stack as free. */
+ curp->tid = 0;
+
+- /* The PID field must be initialized for the new process. */
+- curp->pid = self->pid;
+-
+ /* Account for the size of the stack. */
+ stack_cache_actsize += curp->stackblock_size;
+
+@@ -903,13 +894,6 @@ __reclaim_stacks (void)
+ }
+ }
+
+- /* Reset the PIDs in any cached stacks. */
+- list_for_each (runp, &stack_cache)
+- {
+- struct pthread *curp = list_entry (runp, struct pthread, list);
+- curp->pid = self->pid;
+- }
+-
+ /* Add the stack of all running threads to the cache. */
+ list_splice (&stack_used, &stack_cache);
+
+@@ -1054,9 +1038,9 @@ setxid_signal_thread (struct xid_command *cmdp, struct pthread *t)
+ return 0;
+
+ int val;
++ pid_t pid = __getpid ();
+ INTERNAL_SYSCALL_DECL (err);
+- val = INTERNAL_SYSCALL (tgkill, err, 3, THREAD_GETMEM (THREAD_SELF, pid),
+- t->tid, SIGSETXID);
++ val = INTERNAL_SYSCALL_CALL (tgkill, err, pid, t->tid, SIGSETXID);
+
+ /* If this failed, it must have had not started yet or else exited. */
+ if (!INTERNAL_SYSCALL_ERROR_P (val, err))
+diff --git a/nptl/descr.h b/nptl/descr.h
+index 8e4938deb5..bc92abf010 100644
+--- a/nptl/descr.h
++++ b/nptl/descr.h
+@@ -167,8 +167,8 @@ struct pthread
+ therefore stack) used' flag. */
+ pid_t tid;
+
+- /* Process ID - thread group ID in kernel speak. */
+- pid_t pid;
++ /* Ununsed. */
++ pid_t pid_ununsed;
+
+ /* List of robust mutexes the thread is holding. */
+ #ifdef __PTHREAD_MUTEX_HAVE_PREV
+diff --git a/nptl/nptl-init.c b/nptl/nptl-init.c
+index bdbdfedcef..48fab50c4e 100644
+--- a/nptl/nptl-init.c
++++ b/nptl/nptl-init.c
+@@ -184,18 +184,12 @@ __nptl_set_robust (struct pthread *self)
+ static void
+ sigcancel_handler (int sig, siginfo_t *si, void *ctx)
+ {
+- /* Determine the process ID. It might be negative if the thread is
+- in the middle of a fork() call. */
+- pid_t pid = THREAD_GETMEM (THREAD_SELF, pid);
+- if (__glibc_unlikely (pid < 0))
+- pid = -pid;
+-
+ /* Safety check. It would be possible to call this function for
+ other signals and send a signal from another process. This is not
+ correct and might even be a security problem. Try to catch as
+ many incorrect invocations as possible. */
+ if (sig != SIGCANCEL
+- || si->si_pid != pid
++ || si->si_pid != __getpid()
+ || si->si_code != SI_TKILL)
+ return;
+
+@@ -243,19 +237,14 @@ struct xid_command *__xidcmd attribute_hidden;
+ static void
+ sighandler_setxid (int sig, siginfo_t *si, void *ctx)
+ {
+- /* Determine the process ID. It might be negative if the thread is
+- in the middle of a fork() call. */
+- pid_t pid = THREAD_GETMEM (THREAD_SELF, pid);
+ int result;
+- if (__glibc_unlikely (pid < 0))
+- pid = -pid;
+
+ /* Safety check. It would be possible to call this function for
+ other signals and send a signal from another process. This is not
+ correct and might even be a security problem. Try to catch as
+ many incorrect invocations as possible. */
+ if (sig != SIGSETXID
+- || si->si_pid != pid
++ || si->si_pid != __getpid ()
+ || si->si_code != SI_TKILL)
+ return;
+
+diff --git a/nptl/pthread_cancel.c b/nptl/pthread_cancel.c
+index 1419baf988..89d02e1741 100644
+--- a/nptl/pthread_cancel.c
++++ b/nptl/pthread_cancel.c
+@@ -22,7 +22,7 @@
+ #include "pthreadP.h"
+ #include <atomic.h>
+ #include <sysdep.h>
+-
++#include <unistd.h>
+
+ int
+ pthread_cancel (pthread_t th)
+@@ -66,19 +66,11 @@ pthread_cancel (pthread_t th)
+ #ifdef SIGCANCEL
+ /* The cancellation handler will take care of marking the
+ thread as canceled. */
+- INTERNAL_SYSCALL_DECL (err);
+-
+- /* One comment: The PID field in the TCB can temporarily be
+- changed (in fork). But this must not affect this code
+- here. Since this function would have to be called while
+- the thread is executing fork, it would have to happen in
+- a signal handler. But this is no allowed, pthread_cancel
+- is not guaranteed to be async-safe. */
+- int val;
+- val = INTERNAL_SYSCALL (tgkill, err, 3,
+- THREAD_GETMEM (THREAD_SELF, pid), pd->tid,
+- SIGCANCEL);
++ pid_t pid = getpid ();
+
++ INTERNAL_SYSCALL_DECL (err);
++ int val = INTERNAL_SYSCALL_CALL (tgkill, err, pid, pd->tid,
++ SIGCANCEL);
+ if (INTERNAL_SYSCALL_ERROR_P (val, err))
+ result = INTERNAL_SYSCALL_ERRNO (val, err);
+ #else
+diff --git a/nptl/pthread_getattr_np.c b/nptl/pthread_getattr_np.c
+index fb906f0484..32d7484bf8 100644
+--- a/nptl/pthread_getattr_np.c
++++ b/nptl/pthread_getattr_np.c
+@@ -68,7 +68,6 @@ pthread_getattr_np (pthread_t thread_id, pthread_attr_t *attr)
+ {
+ /* No stack information available. This must be for the initial
+ thread. Get the info in some magical way. */
+- assert (abs (thread->pid) == thread->tid);
+
+ /* Stack size limit. */
+ struct rlimit rl;
+diff --git a/nptl/tst-exec5.c b/nptl/tst-exec5.c
+new file mode 100644
+index 0000000000..4327d8d41c
+--- /dev/null
++++ b/nptl/tst-exec5.c
+@@ -0,0 +1,196 @@
++/* Check if posix_spawn does not act as a cancellation entrypoint.
++ Copyright (C) 2016 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <errno.h>
++#include <paths.h>
++#include <pthread.h>
++#include <signal.h>
++#include <spawn.h>
++#include <stdbool.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <unistd.h>
++#include <sys/wait.h>
++
++static int do_test (void);
++#define TEST_FUNCTION do_test ()
++#include <test-skeleton.c>
++
++static pthread_barrier_t b;
++
++static pid_t pid;
++static int pipefd[2];
++
++static void *
++tf (void *arg)
++{
++ int r = pthread_barrier_wait (&b);
++ if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
++ {
++ puts ("error: pthread_barrier_wait failed");
++ exit (1);
++ }
++
++ posix_spawn_file_actions_t a;
++ if (posix_spawn_file_actions_init (&a) != 0)
++ {
++ puts ("error: spawn_file_actions_init failed");
++ exit (1);
++ }
++
++ if (posix_spawn_file_actions_adddup2 (&a, pipefd[1], STDOUT_FILENO) != 0)
++ {
++ puts ("error: spawn_file_actions_adddup2 failed");
++ exit (1);
++ }
++
++ if (posix_spawn_file_actions_addclose (&a, pipefd[0]) != 0)
++ {
++ puts ("error: spawn_file_actions_addclose");
++ exit (1);
++ }
++
++ char *argv[] = { (char *) _PATH_BSHELL, (char *) "-c", (char *) "echo $$",
++ NULL };
++ if (posix_spawn (&pid, _PATH_BSHELL, &a, NULL, argv, NULL) != 0)
++ {
++ puts ("error: spawn failed");
++ exit (1);
++ }
++
++ return NULL;
++}
++
++
++static int
++do_test (void)
++{
++ /* The test basically pipe a 'echo $$' created by a thread with a
++ cancellation pending. It then checks if the thread is not cancelled,
++ the process is created and if the output is the expected one. */
++
++ if (pipe (pipefd) != 0)
++ {
++ puts ("error: pipe failed");
++ exit (1);
++ }
++
++ /* Not interested in knowing when the pipe is closed. */
++ if (sigignore (SIGPIPE) != 0)
++ {
++ puts ("error: sigignore failed");
++ exit (1);
++ }
++
++ /* To synchronize with the thread. */
++ if (pthread_barrier_init (&b, NULL, 2) != 0)
++ {
++ puts ("error: pthread_barrier_init failed");
++ exit (1);
++ }
++
++ pthread_t th;
++ if (pthread_create (&th, NULL, &tf, NULL) != 0)
++ {
++ puts ("error: pthread_create failed");
++ exit (1);
++ }
++
++ if (pthread_cancel (th) != 0)
++ {
++ puts ("error: pthread_cancel failed");
++ exit (1);
++ }
++
++ int r = pthread_barrier_wait (&b);
++ if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
++ {
++ puts ("error: pthread_barrier_wait");
++ exit (1);
++ }
++
++ void *retval;
++ if (pthread_join (th, &retval) != 0)
++ {
++ puts ("error: pthread_join failed\n");
++ }
++ if (retval == PTHREAD_CANCELED)
++ {
++ puts ("error: thread cancelled");
++ exit (1);
++ }
++
++ close (pipefd[1]);
++
++ /* The global 'pid' should be set by thread posix_spawn calling. Check
++ below if it was executed correctly and with expected output. */
++
++ char buf[64];
++ ssize_t n;
++ bool seen_pid = false;
++ while (TEMP_FAILURE_RETRY ((n = read (pipefd[0], buf, sizeof (buf)))) > 0)
++ {
++ /* We only expect to read the PID. */
++ char *endp;
++ long int rpid = strtol (buf, &endp, 10);
++
++ if (*endp != '\n')
++ {
++ printf ("error: didn't parse whole line: \"%s\"\n", buf);
++ exit (1);
++ }
++ if (endp == buf)
++ {
++ puts ("error: read empty line");
++ exit (1);
++ }
++
++ if (rpid != pid)
++ {
++ printf ("error: found \"%s\", expected PID %ld\n", buf,
++ (long int) pid);
++ exit (1);
++ }
++
++ if (seen_pid)
++ {
++ puts ("error: found more than one PID line");
++ exit (1);
++ }
++
++ seen_pid = true;
++ }
++
++ close (pipefd[0]);
++
++ int status;
++ int err = waitpid (pid, &status, 0);
++ if (err != pid)
++ {
++ puts ("errnor: waitpid failed");
++ exit (1);
++ }
++
++ if (!seen_pid)
++ {
++ puts ("error: didn't get PID");
++ exit (1);
++ }
++
++ return 0;
++}
+diff --git a/nptl/tst-once5.cc b/nptl/tst-once5.cc
+index 978d8271bd..513ac53f6f 100644
+--- a/nptl/tst-once5.cc
++++ b/nptl/tst-once5.cc
+@@ -75,5 +75,7 @@ do_test (void)
+ return result;
+ }
+
++// The test currently hangs and is XFAILed. Reduce the timeout.
++#define TIMEOUT 1
+ #define TEST_FUNCTION do_test ()
+ #include "../test-skeleton.c"
+diff --git a/nptl_db/structs.def b/nptl_db/structs.def
+index a9b621b126..1cb6a46391 100644
+--- a/nptl_db/structs.def
++++ b/nptl_db/structs.def
+@@ -48,7 +48,6 @@ DB_STRUCT (pthread)
+ DB_STRUCT_FIELD (pthread, list)
+ DB_STRUCT_FIELD (pthread, report_events)
+ DB_STRUCT_FIELD (pthread, tid)
+-DB_STRUCT_FIELD (pthread, pid)
+ DB_STRUCT_FIELD (pthread, start_routine)
+ DB_STRUCT_FIELD (pthread, cancelhandling)
+ DB_STRUCT_FIELD (pthread, schedpolicy)
+diff --git a/nptl_db/td_ta_thr_iter.c b/nptl_db/td_ta_thr_iter.c
+index a990fed150..9e5059956b 100644
+--- a/nptl_db/td_ta_thr_iter.c
++++ b/nptl_db/td_ta_thr_iter.c
+@@ -76,48 +76,28 @@ iterate_thread_list (td_thragent_t *ta, td_thr_iter_f *callback,
+ if (ps_pdread (ta->ph, addr, copy, ta->ta_sizeof_pthread) != PS_OK)
+ return TD_ERR;
+
+- /* Verify that this thread's pid field matches the child PID.
+- If its pid field is negative, it's about to do a fork or it
+- is the sole thread in a fork child. */
+- psaddr_t pid;
+- err = DB_GET_FIELD_LOCAL (pid, ta, copy, pthread, pid, 0);
+- if (err == TD_OK && (pid_t) (uintptr_t) pid < 0)
+- {
+- if (-(pid_t) (uintptr_t) pid == match_pid)
+- /* It is about to do a fork, but is really still the parent PID. */
+- pid = (psaddr_t) (uintptr_t) match_pid;
+- else
+- /* It must be a fork child, whose new PID is in the tid field. */
+- err = DB_GET_FIELD_LOCAL (pid, ta, copy, pthread, tid, 0);
+- }
++ err = DB_GET_FIELD_LOCAL (schedpolicy, ta, copy, pthread,
++ schedpolicy, 0);
+ if (err != TD_OK)
+ break;
++ err = DB_GET_FIELD_LOCAL (schedprio, ta, copy, pthread,
++ schedparam_sched_priority, 0);
++ if (err != TD_OK)
++ break;
++
++ /* Now test whether this thread matches the specified conditions. */
+
+- if ((pid_t) (uintptr_t) pid == match_pid)
++ /* Only if the priority level is as high or higher. */
++ int descr_pri = ((uintptr_t) schedpolicy == SCHED_OTHER
++ ? 0 : (uintptr_t) schedprio);
++ if (descr_pri >= ti_pri)
+ {
+- err = DB_GET_FIELD_LOCAL (schedpolicy, ta, copy, pthread,
+- schedpolicy, 0);
+- if (err != TD_OK)
+- break;
+- err = DB_GET_FIELD_LOCAL (schedprio, ta, copy, pthread,
+- schedparam_sched_priority, 0);
+- if (err != TD_OK)
+- break;
+-
+- /* Now test whether this thread matches the specified conditions. */
+-
+- /* Only if the priority level is as high or higher. */
+- int descr_pri = ((uintptr_t) schedpolicy == SCHED_OTHER
+- ? 0 : (uintptr_t) schedprio);
+- if (descr_pri >= ti_pri)
+- {
+- /* Yep, it matches. Call the callback function. */
+- td_thrhandle_t th;
+- th.th_ta_p = (td_thragent_t *) ta;
+- th.th_unique = addr;
+- if (callback (&th, cbdata_p) != 0)
+- return TD_DBERR;
+- }
++ /* Yep, it matches. Call the callback function. */
++ td_thrhandle_t th;
++ th.th_ta_p = (td_thragent_t *) ta;
++ th.th_unique = addr;
++ if (callback (&th, cbdata_p) != 0)
++ return TD_DBERR;
+ }
+
+ /* Get the pointer to the next element. */
+diff --git a/nptl_db/td_thr_validate.c b/nptl_db/td_thr_validate.c
+index f3c8a7bed6..9b89fecad2 100644
+--- a/nptl_db/td_thr_validate.c
++++ b/nptl_db/td_thr_validate.c
+@@ -80,28 +80,5 @@ td_thr_validate (const td_thrhandle_t *th)
+ err = TD_OK;
+ }
+
+- if (err == TD_OK)
+- {
+- /* Verify that this is not a stale element in a fork child. */
+- pid_t match_pid = ps_getpid (th->th_ta_p->ph);
+- psaddr_t pid;
+- err = DB_GET_FIELD (pid, th->th_ta_p, th->th_unique, pthread, pid, 0);
+- if (err == TD_OK && (pid_t) (uintptr_t) pid < 0)
+- {
+- /* This was a thread that was about to fork, or it is the new sole
+- thread in a fork child. In the latter case, its tid was stored
+- via CLONE_CHILD_SETTID and so is already the proper child PID. */
+- if (-(pid_t) (uintptr_t) pid == match_pid)
+- /* It is about to do a fork, but is really still the parent PID. */
+- pid = (psaddr_t) (uintptr_t) match_pid;
+- else
+- /* It must be a fork child, whose new PID is in the tid field. */
+- err = DB_GET_FIELD (pid, th->th_ta_p, th->th_unique,
+- pthread, tid, 0);
+- }
+- if (err == TD_OK && (pid_t) (uintptr_t) pid != match_pid)
+- err = TD_NOTHR;
+- }
+-
+ return err;
+ }
+diff --git a/po/de.po b/po/de.po
+index 1383e8c4a9..ca14c7e386 100644
+--- a/po/de.po
++++ b/po/de.po
+@@ -8,7 +8,7 @@ msgid ""
+ msgstr ""
+ "Project-Id-Version: GNU libc 2.22-pre1\n"
+ "POT-Creation-Date: 2015-07-31 00:10-0400\n"
+-"PO-Revision-Date: 2015-08-31 18:30+0200\n"
++"PO-Revision-Date: 2016-04-22 18:44+0200\n"
+ "Last-Translator: Jochen Hein <jochen@jochen.org>\n"
+ "Language-Team: German <translation-team-de@lists.sourceforge.net>\n"
+ "Language: de\n"
+@@ -4479,13 +4479,13 @@ msgstr ""
+ "%15s Cache ist dauerhaft\n"
+ "%15s Cache wird gemeinsam verwendet\n"
+ "%15Zu vorgeschlagene Größe\n"
+-"%15Zu Gesamtröße des Data-Pools\n"
++"%15Zu Gesamtgröße des Data-Pools\n"
+ "%15Zu Benutzter Speicher im Data-Pool\n"
+ "%15lu Time to Live für positive Einträge in Sekunden\n"
+ "%15lu Time to Live für negative Einträge in Sekunden\n"
+ "%15<PRIuMAX> Cache-Hits bei positiven Einträgen\n"
+ "%15<PRIuMAX> Cache-Hits bei positiven Einträgen\n"
+-"%15<PRIuMAX> Cache-Misses bei positiven Einträgen\n"
++"%15<PRIuMAX> Cache-Misses bei positiven Einträgen\n"
+ "%15<PRIuMAX> Cache-Misses bei negativen Einträgen\n"
+ "%15lu%% Cache-Hit Verhältnis\n"
+ "%15zu aktuelle Anzahl der Werte im Cache\n"
+diff --git a/po/fi.po b/po/fi.po
+index 17cb3e3e1d..8a2ab8358c 100644
+--- a/po/fi.po
++++ b/po/fi.po
+@@ -24,16 +24,16 @@
+ #
+ msgid ""
+ msgstr ""
+-"Project-Id-Version: libc 2.21-pre1\n"
++"Project-Id-Version: libc 2.22-pre1\n"
+ "POT-Creation-Date: 2015-07-31 00:10-0400\n"
+-"PO-Revision-Date: 2015-07-28 20:29+0300\n"
++"PO-Revision-Date: 2016-05-26 21:14+0300\n"
+ "Last-Translator: Lauri Nurmi <lanurmi@iki.fi>\n"
+ "Language-Team: Finnish <translation-team-fi@lists.sourceforge.net>\n"
+ "Language: fi\n"
+ "MIME-Version: 1.0\n"
+ "Content-Type: text/plain; charset=UTF-8\n"
+ "Content-Transfer-Encoding: 8bit\n"
+-"X-Generator: Poedit 1.8.3\n"
++"X-Generator: Poedit 1.8.7\n"
+ "Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+ #: argp/argp-help.c:227
+@@ -126,7 +126,7 @@ msgid "%s%s%s:%u: %s%sUnexpected error: %s.\n"
+ msgstr "%s%s%s:%u: %s%sOdottamaton virhe: %s.\n"
+
+ #: assert/assert.c:101
+-#, fuzzy, c-format
++#, c-format
+ msgid ""
+ "%s%s%s:%u: %s%sAssertion `%s' failed.\n"
+ "%n"
+@@ -169,12 +169,12 @@ msgstr ""
+ #: malloc/memusagestat.c:563 nss/getent.c:973 nss/makedb.c:369
+ #: posix/getconf.c:486 sunrpc/rpcinfo.c:691
+ #: sysdeps/unix/sysv/linux/lddlibc4.c:61
+-#, fuzzy, c-format
++#, c-format
+ msgid ""
+ "For bug reporting instructions, please see:\n"
+ "%s.\n"
+ msgstr ""
+-"Ohjeet ohjelmistovioista ilmoittamiseen ovat osoitteessa\n"
++"Katso ohjeet vikailmoitusten tekemiseen osoitteesta:\n"
+ "%s.\n"
+
+ #: catgets/gencat.c:245 debug/pcprofiledump.c:225 debug/xtrace.sh:64
+@@ -321,9 +321,8 @@ msgstr "Käyttö: xtrace [VALITSIN]... OHJELMA [OHJELMANVALITSIN]...\\n"
+
+ #: debug/xtrace.sh:32 elf/sotruss.sh:56 elf/sotruss.sh:67 elf/sotruss.sh:135
+ #: malloc/memusage.sh:26
+-#, fuzzy
+ msgid "Try \\`%s --help' or \\`%s --usage' for more information.\\n"
+-msgstr "Kokeile ”%s --help” tai ”%s --usage” saadaksesi lisää tietoa.\n"
++msgstr "Kokeile ”%s --help” tai ”%s --usage” saadaksesi lisää tietoa.\\n"
+
+ #: debug/xtrace.sh:38
+ #, fuzzy
+@@ -594,9 +593,8 @@ msgid "cannot enable executable stack as shared object requires"
+ msgstr "jaettua objektikahvaa ei voi luoda"
+
+ #: elf/dl-load.c:1339
+-#, fuzzy
+ msgid "cannot close file descriptor"
+-msgstr "tiedostoa %s ei voi sulkea"
++msgstr "tiedostokahvaa ei voi sulkea"
+
+ #: elf/dl-load.c:1568
+ msgid "file too short"
+@@ -796,9 +794,8 @@ msgid "Format to use: new, old or compat (default)"
+ msgstr "Käytettävä muoto: ”new”, ”old” tai ”compat” (oletus)"
+
+ #: elf/ldconfig.c:151
+-#, fuzzy
+ msgid "Ignore auxiliary cache file"
+-msgstr "Käytä CACHEa välimuistitiedostona"
++msgstr "Jätä huomiotta apuvälimuistitiedosto"
+
+ #: elf/ldconfig.c:159
+ msgid "Configure Dynamic Linker Run Time Bindings."
+@@ -1087,9 +1084,9 @@ msgid "invalid process ID '%s'"
+ msgstr "virheellinen prosessi-ID ”%s”"
+
+ #: elf/pldd.c:120
+-#, fuzzy, c-format
++#, c-format
+ msgid "cannot open %s"
+-msgstr "laitetta %s ei voi avata"
++msgstr "tiedostoa %s ei voi avata"
+
+ #: elf/pldd.c:152
+ #, fuzzy, c-format
+@@ -1102,24 +1099,24 @@ msgid "cannot prepare reading %s/task"
+ msgstr "ei voi avata laitetta %s lukutilaan"
+
+ #: elf/pldd.c:168
+-#, fuzzy, c-format
++#, c-format
+ msgid "invalid thread ID '%s'"
+-msgstr "virheellinen prosessi-ID ”%s”"
++msgstr "virheellinen säie-ID ”%s”"
+
+ #: elf/pldd.c:179
+-#, fuzzy, c-format
++#, c-format
+ msgid "cannot attach to process %lu"
+-msgstr "tiedostoa ”%s” ei voi avata"
++msgstr "ei voida kiinnittyä prosessiin %lu"
+
+ #: elf/pldd.c:294
+ #, c-format
+ msgid "cannot get information about process %lu"
+-msgstr ""
++msgstr "tietojen saaminen prosessista %lu ei onnistu"
+
+ #: elf/pldd.c:307
+-#, fuzzy, c-format
++#, c-format
+ msgid "process %lu is no ELF program"
+-msgstr "ohjelma %lu ei ole käytettävissä\n"
++msgstr "prosessi %lu ei ole ELF-ohjelma"
+
+ #: elf/readelflib.c:34
+ #, c-format
+@@ -1203,7 +1200,7 @@ msgstr "%s kohde ei saa olla hakemisto\n"
+ #: elf/sln.c:184
+ #, c-format
+ msgid "%s: failed to remove the old destination\n"
+-msgstr ""
++msgstr "%s: vanhan kohteen poistaminen epäonnistui\n"
+
+ #: elf/sln.c:192
+ #, c-format
+@@ -1237,9 +1234,8 @@ msgid "Mandatory arguments to long options are also mandatory for any correspond
+ msgstr "Pakolliset argumentit pitkille valitsimille ovat pakollisia kaikille vastaaville lyhyille valitsimille.\\n"
+
+ #: elf/sotruss.sh:55
+-#, fuzzy
+ msgid "%s: option requires an argument -- '%s'\\n"
+-msgstr "%s: valitsin ”%s” vaatii argumentin\n"
++msgstr "%s: valitsin vaatii argumentin -- ”%c”\\n"
+
+ #: elf/sotruss.sh:61
+ msgid "%s: option is ambiguous; possibilities:"
+@@ -1507,7 +1503,6 @@ msgid "unknown iconv() error %d"
+ msgstr "tuntematon iconv()-virhe %d"
+
+ #: iconv/iconv_prog.c:791
+-#, fuzzy
+ msgid ""
+ "The following list contains all the coded character sets known. This does\n"
+ "not necessarily mean that all combinations of these names can be used for\n"
+@@ -1516,9 +1511,9 @@ msgid ""
+ "\n"
+ " "
+ msgstr ""
+-"Seuraavassa listassa ovat kaikki tunnetut koodatut merkistöt. Se ei\n"
++"Seuraavassa listassa ovat kaikki tunnetut koodatut merkistöt. Tämä ei\n"
+ "kuitenkaan välttämättä tarkoita sitä, että kaikkia näiden nimien\n"
+-"yhdistelmiä voidaan käyttää FROM- ja TO-komentoriviparametreina. Yksi\n"
++"yhdistelmiä voisi käyttää FROM- ja TO-komentoriviparametreina. Yksi\n"
+ "koodattu merkistö voi olla listalla useilla eri nimillä (aliaksilla).\n"
+ "\n"
+ " "
+@@ -2733,14 +2728,12 @@ msgid "locale.alias file to consult when making archive"
+ msgstr "Arkistoa luotaessa käytettävä locale.alias-tiedosto"
+
+ #: locale/programs/localedef.c:150
+-#, fuzzy
+ msgid "Generate little-endian output"
+-msgstr "Tuota little-endian-koodia"
++msgstr "Tuota little-endian-muotoa"
+
+ #: locale/programs/localedef.c:152
+-#, fuzzy
+ msgid "Generate big-endian output"
+-msgstr "Tuota big-endian-koodia"
++msgstr "Tuota big-endian-muotoa"
+
+ #: locale/programs/localedef.c:157
+ msgid "Compile locale specification"
+@@ -4275,10 +4268,9 @@ msgid ""
+ msgstr ""
+
+ #: nscd/nscd.c:635
+-#, fuzzy, c-format
+-#| msgid "lstat failed"
++#, c-format
+ msgid "'wait' failed\n"
+-msgstr "tiedoston tilan luku epäonnistui"
++msgstr "”wait” epäonnistui\n"
+
+ #: nscd/nscd.c:642
+ #, c-format
+@@ -4670,9 +4662,9 @@ msgid "cannot create temporary file"
+ msgstr "tilapäistä tiedostoa ei voi luoda"
+
+ #: nss/makedb.c:304
+-#, fuzzy, c-format
++#, c-format
+ msgid "cannot stat newly created file"
+-msgstr "tiedoston ”%s” tilaa ei voi lukea: %s"
++msgstr "juuri luodun tiedoston tilaa ei voi lukea"
+
+ #: nss/makedb.c:315
+ #, c-format
+@@ -4680,9 +4672,9 @@ msgid "cannot rename temporary file"
+ msgstr "tilapäistä tiedostoa ei voi nimetä uudelleen"
+
+ #: nss/makedb.c:531 nss/makedb.c:554
+-#, fuzzy, c-format
++#, c-format
+ msgid "cannot create search tree"
+-msgstr "hakupolulle ei voi luoda välimuistia"
++msgstr "hakupuuta ei voi luoda"
+
+ #: nss/makedb.c:560
+ msgid "duplicate key"
+@@ -4699,9 +4691,9 @@ msgid "failed to write new database file"
+ msgstr "uuden tietokantatiedoston kirjoittaminen epäonnistui"
+
+ #: nss/makedb.c:812
+-#, fuzzy, c-format
++#, c-format
+ msgid "cannot stat database file"
+-msgstr "tiedoston ”%s” tilaa ei voi lukea: %s"
++msgstr "tietokantatiedoston tilaa ei voi lukea"
+
+ #: nss/makedb.c:817
+ #, fuzzy, c-format
+@@ -4709,9 +4701,9 @@ msgid "cannot map database file"
+ msgstr "Karttatietokannassa ei ole enempää tietueita"
+
+ #: nss/makedb.c:820
+-#, fuzzy, c-format
++#, c-format
+ msgid "file not a database file"
+-msgstr "luettaessa profilointidatatiedoston tilaa"
++msgstr "tiedosto ei ole tietokantatiedosto"
+
+ #: nss/makedb.c:871
+ #, fuzzy, c-format
+@@ -4726,7 +4718,7 @@ msgstr "Käyttö: %s [-v määrittely] muuttujanimi [polku]\n"
+ #: posix/getconf.c:403
+ #, c-format
+ msgid " %s -a [pathname]\n"
+-msgstr ""
++msgstr " %s -a [polku]\n"
+
+ #: posix/getconf.c:479
+ #, c-format
+@@ -5094,11 +5086,11 @@ msgstr "Laitetta irrotettu"
+
+ #: stdio-common/psiginfo.c:139
+ msgid "Signal sent by kill()"
+-msgstr ""
++msgstr "Signaalin lähetti kill()"
+
+ #: stdio-common/psiginfo.c:142
+ msgid "Signal sent by sigqueue()"
+-msgstr ""
++msgstr "Signaalin lähetti sigqueue()"
+
+ #: stdio-common/psiginfo.c:145
+ msgid "Signal generated by the expiration of a timer"
+@@ -5114,7 +5106,7 @@ msgstr ""
+
+ #: stdio-common/psiginfo.c:157
+ msgid "Signal sent by tkill()"
+-msgstr ""
++msgstr "Signaalin lähetti tkill()"
+
+ #: stdio-common/psiginfo.c:162
+ msgid "Signal generated by the completion of an asynchronous name lookup request"
+@@ -5296,9 +5288,8 @@ msgid "Failed (unspecified error)"
+ msgstr "Epäonnistui (määrittelemätön virhe)"
+
+ #: sunrpc/clnt_raw.c:115
+-#, fuzzy
+ msgid "clnt_raw.c: fatal header serialization error"
+-msgstr "clnt_raw.c: vakava otsikon serialisointivirhe"
++msgstr "clnt_raw.c: vakava otsikon sarjallistamisvirhe"
+
+ #: sunrpc/pm_getmaps.c:77
+ msgid "pmap_getmaps.c: rpc problem"
+@@ -6825,9 +6816,8 @@ msgid "Interrupted by a signal"
+ msgstr "Signaalin keskeyttämä"
+
+ #: sysdeps/posix/gai_strerror-strs.h:17
+-#, fuzzy
+ msgid "Parameter string not correctly encoded"
+-msgstr "Parametrimerkkijono on väärin koodattu"
++msgstr "Parametrimerkkijono ei ole koodattu oikein"
+
+ #: sysdeps/unix/sysv/linux/i386/readelflib.c:65
+ #, c-format
+diff --git a/po/sv.po b/po/sv.po
+index 49d1f23904..e046577b08 100644
+--- a/po/sv.po
++++ b/po/sv.po
+@@ -1,13 +1,17 @@
+ # GNU libc message catalog for Swedish
+-# Copyright © 1996, 1998, 2001, 2002, 2003, 2006, 2008, 2009, 2011, 2012, 2013, 2014, 2015 Free Software Foundation, Inc.
++# Copyright © 1996, 1998, 2001, 2002, 2003, 2006, 2008, 2009, 2011, 2012, 2013, 2014, 2015, 2016 Free Software Foundation, Inc.
+ # This file is distributed under the same license as the glibc package.
+-# Jan Djärv <jan.h.d@swipnet.se>, 1996, 1998, 2001, 2002, 2003, 2006, 2007, 2008, 2009, 2011, 2012, 2013, 2014, 2015
++#
++# Jan Djärv <jan.h.d@swipnet.se>, 1996, 1998, 2001, 2002, 2003, 2006, 2007, 2008, 2009, 2011, 2012, 2013, 2014, 2015.
++# Göran Uddeborg <goeran@uddeborg.se>, 2016.
++#
++# $Revision: 1.3 $
+ msgid ""
+ msgstr ""
+-"Project-Id-Version: libc 2.21-pre1\n"
++"Project-Id-Version: libc 2.22-pre1\n"
+ "POT-Creation-Date: 2015-07-31 00:10-0400\n"
+-"PO-Revision-Date: 2015-01-24 10:35+0100\n"
+-"Last-Translator: Jan Djärv <jan.h.d@swipnet.se>\n"
++"PO-Revision-Date: 2016-08-02 17:17+0200\n"
++"Last-Translator: Göran Uddeborg <goeran@uddeborg.se>\n"
+ "Language-Team: Swedish <tp-sv@listor.tp-sv.se>\n"
+ "Language: sv\n"
+ "MIME-Version: 1.0\n"
+@@ -48,7 +52,7 @@ msgstr " [FLAGGA...]"
+ #: argp/argp-help.c:1643
+ #, c-format
+ msgid "Try `%s --help' or `%s --usage' for more information.\n"
+-msgstr "Försök med \"%s --help\" eller \"%s --usage\" för mer information\n"
++msgstr "Försök med ”%s --help” eller ”%s --usage” för mer information.\n"
+
+ #: argp/argp-help.c:1671
+ #, c-format
+@@ -304,11 +308,11 @@ msgstr "Användning: xtrace [FLAGGA]... PROGRAM [PROGRAMFLAGGA}...\\n"
+ #: debug/xtrace.sh:32 elf/sotruss.sh:56 elf/sotruss.sh:67 elf/sotruss.sh:135
+ #: malloc/memusage.sh:26
+ msgid "Try \\`%s --help' or \\`%s --usage' for more information.\\n"
+-msgstr "Försök med \\\"%s --help\\\" eller \\\"%s --usage\\\" för mer information\\n"
++msgstr "Försök med ”%s --help” eller ”%s --usage” för mer information\\n"
+
+ #: debug/xtrace.sh:38
+ msgid "%s: option '%s' requires an argument.\\n"
+-msgstr "%s: flaggan \\\"%s\\\" kräver ett argument\\n"
++msgstr "%s: flaggan ”%s” kräver ett argument.\\n"
+
+ #: debug/xtrace.sh:45
+ msgid ""
+@@ -332,19 +336,17 @@ msgstr ""
+ " --usage Visa en kort hjälptext\n"
+ " -V,--version Visa versionsinformation och avsluta\n"
+ "\n"
+-"Obligatoriska argument för långa flaggor är obligatoriska även för\n"
++"Obligatoriska argument för långa flaggor är obligatoriska även för\n"
+ "motsvarande korta.\n"
+
+ #: debug/xtrace.sh:57 elf/ldd.bash.in:55 elf/sotruss.sh:49
+ #: malloc/memusage.sh:64
+ msgid "For bug reporting instructions, please see:\\\\n%s.\\\\n"
+-msgstr ""
+-"För felrapporteringsinstruktioner, se:\\\\n%s.\\\\n\n"
+-"Rapportera fel eller synpunkter på översättningen till <tp-sv@listor.tp-sv.se>.\\\\n"
++msgstr "För felrapporteringsinstruktioner, se:\\\\n%s.\\\\nRapportera fel eller synpunkter på översättningen till:\\\\n<tp-sv@listor.tp-sv.se>.\\\\n"
+
+ #: debug/xtrace.sh:125
+ msgid "xtrace: unrecognized option \\`$1'\\n"
+-msgstr "xtrace: okänd flagga \"$1\"\\n"
++msgstr "xtrace: okänd flagga ”$1”\\n"
+
+ #: debug/xtrace.sh:138
+ msgid "No program name given\\n"
+@@ -353,12 +355,12 @@ msgstr "Inget programnamn givet\\n"
+ #: debug/xtrace.sh:146
+ #, sh-format
+ msgid "executable \\`$program' not found\\n"
+-msgstr "program \"$program\" hittades inte\\n"
++msgstr "program ”$program” hittades inte\\n"
+
+ #: debug/xtrace.sh:150
+ #, sh-format
+ msgid "\\`$program' is no executable\\n"
+-msgstr "\"$program\" är inte en körbar binär\\n"
++msgstr "”$program” är inte en körbar binär\\n"
+
+ #: dlfcn/dlinfo.c:63
+ msgid "RTLD_SELF used in code not dynamically loaded"
+@@ -396,7 +398,7 @@ msgstr ", OS ABI: %s %d.%d.%d"
+ #: elf/cache.c:157 elf/ldconfig.c:1340
+ #, c-format
+ msgid "Can't open cache file %s\n"
+-msgstr "Kan inte öppna cache-fil \"%s\"\n"
++msgstr "Kan inte öppna cache-filen %s\n"
+
+ #: elf/cache.c:171
+ #, c-format
+@@ -416,7 +418,7 @@ msgstr "%d bibliotek hittades i cache \"%s\"\n"
+ #: elf/cache.c:426
+ #, c-format
+ msgid "Can't create temporary cache file %s"
+-msgstr "Kan inte skapa temporär cache-fil \"%s\""
++msgstr "Kan inte skapa en temporär cache-fil %s"
+
+ #: elf/cache.c:434 elf/cache.c:444 elf/cache.c:448 elf/cache.c:453
+ #, c-format
+@@ -829,7 +831,7 @@ msgstr "Kan inte ta status (lstat) på %s"
+ #: elf/ldconfig.c:609
+ #, c-format
+ msgid "Ignored file %s since it is not a regular file."
+-msgstr "Ignorerar fil %s eftersom den inte är en vanlig fil"
++msgstr "Ignorerar fil %s eftersom den inte är en vanlig fil."
+
+ #: elf/ldconfig.c:618
+ #, c-format
+@@ -951,7 +953,7 @@ msgstr ""
+
+ #: elf/ldd.bash.in:80
+ msgid "ldd: option \\`$1' is ambiguous"
+-msgstr "ldd: flaggan \"$1\" är tvetydig"
++msgstr "ldd: flaggan ”$1” är tvetydig"
+
+ #: elf/ldd.bash.in:87
+ msgid "unrecognized option"
+@@ -959,7 +961,7 @@ msgstr "okänd flagga"
+
+ #: elf/ldd.bash.in:88 elf/ldd.bash.in:125
+ msgid "Try \\`ldd --help' for more information."
+-msgstr "Försök med \"ldd --help\" för mer information"
++msgstr "Försök med \"ldd --help\" för mer information."
+
+ #: elf/ldd.bash.in:124
+ msgid "missing file arguments"
+@@ -1028,10 +1030,9 @@ msgid "cannot read object name"
+ msgstr "kan inte läsa objektnamn"
+
+ #: elf/pldd-xx.c:219
+-#, fuzzy, c-format
+-#| msgid "cannot allocate memory for program header"
++#, c-format
+ msgid "cannot allocate buffer for object name"
+-msgstr "kan inte allokera minne för programhuvud"
++msgstr "kan inte allokera en buffert för objektnamn"
+
+ #: elf/pldd.c:64
+ msgid "List dynamic shared objects loaded into process."
+@@ -1212,11 +1213,11 @@ msgstr ""
+
+ #: elf/sotruss.sh:46
+ msgid "Mandatory arguments to long options are also mandatory for any corresponding\\nshort options.\\n"
+-msgstr "Obligatoriska respektive valfria argument för långa flaggor är obligatoriska respektive\\nvalfria även för korta.\\n"
++msgstr "Obligatoriska respektive valfria argument för långa flaggor är obligatoriska\\nrespektive valfria även för korta.\\n"
+
+ #: elf/sotruss.sh:55
+ msgid "%s: option requires an argument -- '%s'\\n"
+-msgstr "%s: flaggan kräver ett argument -- \\\"%s\\\"\\n"
++msgstr "%s: flaggan kräver ett argument — ”%s”\\n"
+
+ #: elf/sotruss.sh:61
+ msgid "%s: option is ambiguous; possibilities:"
+@@ -1240,7 +1241,7 @@ msgstr ""
+
+ #: elf/sotruss.sh:134
+ msgid "%s: unrecognized option '%c%s'\\n"
+-msgstr "%s: okänd flagga \\\"%c%s\\\"\\n"
++msgstr "%s: okänd flagga ”%c%s”\\n"
+
+ #: elf/sprof.c:77
+ msgid "Output selection:"
+@@ -1260,7 +1261,7 @@ msgstr "generera anropsgraf"
+
+ #: elf/sprof.c:89
+ msgid "Read and display shared object profiling data."
+-msgstr "Läs och visa profildata för delat objekt"
++msgstr "Läs och visa profildata för delat objekt."
+
+ #: elf/sprof.c:94
+ msgid "SHOBJ [PROFDATA]"
+@@ -1622,7 +1623,7 @@ msgstr "Fel: .netrc kan läsas av andra."
+
+ #: inet/ruserpass.c:185
+ msgid "Remove password or make file unreadable by others."
+-msgstr "Ta bort lösenord eller gör filen oläsbar för andra"
++msgstr "Ta bort lösenord eller gör filen oläsbar för andra."
+
+ #: inet/ruserpass.c:277
+ #, c-format
+@@ -2182,12 +2183,12 @@ msgstr "Inget namn definierat i teckenuppsättning"
+ #: locale/programs/ld-ctype.c:479
+ #, c-format
+ msgid "character L'\\u%0*x' in class `%s' must be in class `%s'"
+-msgstr "tecken L\"\\u%0*x\" i klass \"%s\" måste vara i klass \"%s\""
++msgstr "tecken L'\\u%0*x' i klassen ”%s” måste vara i klassen ”%s”"
+
+ #: locale/programs/ld-ctype.c:494
+ #, c-format
+ msgid "character L'\\u%0*x' in class `%s' must not be in class `%s'"
+-msgstr "tecken L\"\\u%0*x\" i klass \"%s\" får inte vara i klass \"%s\""
++msgstr "tecken L'\\u%0*x' i klassen ”%s” får inte vara i klassen ”%s”"
+
+ #: locale/programs/ld-ctype.c:508 locale/programs/ld-ctype.c:566
+ #, c-format
+@@ -2611,7 +2612,7 @@ msgstr "Skriv mer information"
+
+ #: locale/programs/locale.c:85
+ msgid "Get locale-specific information."
+-msgstr "Hämta lokalspecifik information"
++msgstr "Hämta lokalspecifik information."
+
+ #: locale/programs/locale.c:88
+ msgid ""
+@@ -3022,7 +3023,7 @@ msgstr "felaktig mcheck_status, biblioteket är felaktigt\n"
+
+ #: malloc/memusage.sh:32
+ msgid "%s: option '%s' requires an argument\\n"
+-msgstr "%s: flaggan \\\"%s\\\" kräver ett argument\\n"
++msgstr "%s: flaggan ”%s” kräver ett argument\\n"
+
+ #: malloc/memusage.sh:38
+ msgid ""
+@@ -3091,11 +3092,11 @@ msgstr ""
+
+ #: malloc/memusage.sh:191
+ msgid "memusage: option \\`${1##*=}' is ambiguous"
+-msgstr "memusage: flaggan \"${1##*=}\" är tvetydig"
++msgstr "memusage: flaggan ”${1##*=}” är tvetydig"
+
+ #: malloc/memusage.sh:200
+ msgid "memusage: unrecognized option \\`$1'"
+-msgstr "memusage: okänd flagga \"$1\""
++msgstr "memusage: okänd flagga ”$1”"
+
+ #: malloc/memusage.sh:213
+ msgid "No program name given"
+@@ -3341,7 +3342,7 @@ msgstr "Kan inte skapa process hos server"
+
+ #: nis/nis_error.h:48
+ msgid "Master server busy, full dump rescheduled."
+-msgstr "Huvudserver är upptagen, full dump åter schemalagd"
++msgstr "Huvudserver är upptagen, full dump åter schemalagd."
+
+ #: nis/nis_local_names.c:121
+ #, c-format
+@@ -3511,7 +3512,7 @@ msgstr "\t\tRättigheter : "
+
+ #: nis/nis_print.c:290
+ msgid "Linked Object Type : "
+-msgstr "Länkad objekttyp: "
++msgstr "Länkad objekttyp : "
+
+ #: nis/nis_print.c:292
+ #, c-format
+@@ -3802,15 +3803,14 @@ msgid " (first)"
+ msgstr " (första)"
+
+ #: nscd/cache.c:288
+-#, fuzzy, c-format
+-#| msgid "cannot stat() file `%s': %s"
++#, c-format
+ msgid "checking for monitored file `%s': %s"
+-msgstr "kan inte ta status på fil \"%s\": %s"
++msgstr "kontrollerar den övervakade filen ”%s”: %s"
+
+ #: nscd/cache.c:298
+ #, c-format
+ msgid "monitored file `%s` changed (mtime)"
+-msgstr ""
++msgstr "den övervakade filen ”%s” ändrades (mtime)"
+
+ #: nscd/cache.c:341
+ #, c-format
+@@ -3906,34 +3906,32 @@ msgstr "kan inte få uttag (socket) att acceptera förbindelser: %s"
+ #: nscd/connections.c:973
+ #, c-format
+ msgid "disabled inotify-based monitoring for file `%s': %s"
+-msgstr ""
++msgstr "avaktiverade inotify-baserad övervakning för filen ”%s”: %s"
+
+ #: nscd/connections.c:977
+ #, c-format
+ msgid "monitoring file `%s` (%d)"
+-msgstr ""
++msgstr "övervakar filen ”%s” (%d)"
+
+ #: nscd/connections.c:990
+ #, c-format
+ msgid "disabled inotify-based monitoring for directory `%s': %s"
+-msgstr ""
++msgstr "avaktiverade inotify-baserad övervakning av katalogen ”%s”: %s"
+
+ #: nscd/connections.c:994
+-#, fuzzy, c-format
+-#| msgid "Can't open directory %s"
++#, c-format
+ msgid "monitoring directory `%s` (%d)"
+-msgstr "Kan inte öppna katalog %s"
++msgstr "övervakar katalogen ”%s” (%d)"
+
+ #: nscd/connections.c:1022
+-#, fuzzy, c-format
+-#| msgid "register trace file %s for database %s"
++#, c-format
+ msgid "monitoring file %s for database %s"
+-msgstr "registrera spårningsfil %s för databas %s"
++msgstr "övervakar filen %s för databas %s"
+
+ #: nscd/connections.c:1032
+ #, c-format
+ msgid "stat failed for file `%s'; will try again later: %s"
+-msgstr ""
++msgstr "stat misslyckades för filen ”%s”; kommer försöka igen senare: %s"
+
+ #: nscd/connections.c:1151
+ #, c-format
+@@ -4032,44 +4030,42 @@ msgstr "handle_request: begäran mottagen (Version = %d)"
+ #: nscd/connections.c:1963
+ #, c-format
+ msgid "ignored inotify event for `%s` (file exists)"
+-msgstr ""
++msgstr "ignorerade inotify-händelse för ”%s” (filen finns)"
+
+ #: nscd/connections.c:1968
+ #, c-format
+ msgid "monitored file `%s` was %s, removing watch"
+-msgstr ""
++msgstr "den övervakade filen ”%s” var %s, tar bort vakten"
+
+ #: nscd/connections.c:1976 nscd/connections.c:2018
+ #, c-format
+ msgid "failed to remove file watch `%s`: %s"
+-msgstr ""
++msgstr "misslyckades att ta bort filvakt ”%s”: %s"
+
+ #: nscd/connections.c:1991
+ #, c-format
+ msgid "monitored file `%s` was written to"
+-msgstr ""
++msgstr "den övervakade filen ”%s” skrevs till"
+
+ #: nscd/connections.c:2015
+ #, c-format
+ msgid "monitored parent directory `%s` was %s, removing watch on `%s`"
+-msgstr ""
++msgstr "den övervakade föräldrakatalogen ”%s” var %s, tar bort vakten av ”%s”"
+
+ #: nscd/connections.c:2041
+ #, c-format
+ msgid "monitored file `%s` was %s, adding watch"
+-msgstr ""
++msgstr "den övervakade filen ”%s” var %s, lägger till vakt"
+
+ #: nscd/connections.c:2053
+-#, fuzzy, c-format
+-#| msgid "failed to load shared object `%s'"
++#, c-format
+ msgid "failed to add file watch `%s`: %s"
+-msgstr "misslyckades med att ladda delat objekt \"%s\""
++msgstr "misslyckades med att lägga till filvakt ”%s”: %s"
+
+ #: nscd/connections.c:2247 nscd/connections.c:2428
+-#, fuzzy, c-format
+-#| msgid "disabled inotify after read error %d"
++#, c-format
+ msgid "disabled inotify-based monitoring after read error %d"
+-msgstr "inaktiverade inotify efter läsfel %d"
++msgstr "avaktiverade inotify-baserad övervakning efter läsfel %d"
+
+ #: nscd/connections.c:2543
+ msgid "could not initialize conditional variable"
+@@ -4199,7 +4195,7 @@ msgstr "Använd separat cache för varje användare"
+
+ #: nscd/nscd.c:122
+ msgid "Name Service Cache Daemon."
+-msgstr "Namntjänst cache-demon"
++msgstr "Cache-demon för namntjänsten."
+
+ #: nscd/nscd.c:155 nss/getent.c:1007 nss/makedb.c:206
+ #, c-format
+@@ -4531,11 +4527,11 @@ msgstr "Access Vector Cache (AVC) startad"
+
+ #: nscd/selinux.c:368
+ msgid "Error querying policy for undefined object classes or permissions."
+-msgstr "Fel när policy för odefinierade objektklasser eller rättigheter hämtades"
++msgstr "Fel när policy för odefinierade objektklasser eller rättigheter hämtades."
+
+ #: nscd/selinux.c:375
+ msgid "Error getting security class for nscd."
+-msgstr "Fel när säkerhetsklass för nscd hämtades"
++msgstr "Fel när säkerhetsklass för nscd hämtades."
+
+ #: nscd/selinux.c:380
+ #, c-format
+@@ -4609,7 +4605,7 @@ msgstr "inaktivera DIN-kodning"
+
+ #: nss/getent.c:64
+ msgid "Get entries from administrative database."
+-msgstr "Hämta poster från den administrativa databasen"
++msgstr "Hämta poster från den administrativa databasen."
+
+ #: nss/getent.c:148 nss/getent.c:477 nss/getent.c:522
+ #, c-format
+@@ -4652,7 +4648,7 @@ msgstr "Genererad rad som inte ingår i iterationen"
+
+ #: nss/makedb.c:131
+ msgid "Create simple database from textual input."
+-msgstr "Skapa en enkel databas från textuell indata"
++msgstr "Skapa en enkel databas från textuell indata."
+
+ #: nss/makedb.c:134
+ msgid ""
+@@ -5412,7 +5408,7 @@ msgstr "Kan inte ange netid-flaggan utan TIRPC!\n"
+ #: sunrpc/rpc_main.c:1374
+ #, c-format
+ msgid "Cannot use table flags with newstyle!\n"
+-msgstr "Kan inte ange tabellflaggor med ny stil\n"
++msgstr "Kan inte ange tabellflaggor med ny stil!\n"
+
+ #: sunrpc/rpc_main.c:1393
+ #, c-format
+@@ -7270,18 +7266,9 @@ msgstr "tidszonsförkortning skiljer sig från POSIX-standarden"
+
+ #: timezone/zic.c:2789
+ msgid "too many, or too long, time zone abbreviations"
+-msgstr "för många eller för långa tidszonförkortningar"
++msgstr "för många eller för långa tidszonsförkortningar"
+
+ #: timezone/zic.c:2829
+ #, c-format
+ msgid "%s: Can't create directory %s: %s\n"
+ msgstr "%s: Kan inte skapa katalog %s: %s\n"
+-
+-#~ msgid "cannot load any more object with static TLS"
+-#~ msgstr "kan inte ladda fler objekt med statiskt TLS"
+-
+-#~ msgid "%s: no PLTREL found in object %s\n"
+-#~ msgstr "%s: hittade inga PLTREL i objekt %s\n"
+-
+-#~ msgid "cannot create internal descriptors"
+-#~ msgstr "kan inte skapa interna deskriptorer"
+diff --git a/posix/execvpe.c b/posix/execvpe.c
+index d933f9c92a..7cdb06a611 100644
+--- a/posix/execvpe.c
++++ b/posix/execvpe.c
+@@ -48,12 +48,13 @@ maybe_script_execute (const char *file, char *const argv[], char *const envp[])
+ }
+ }
+
+- /* Construct an argument list for the shell. */
++ /* Construct an argument list for the shell. It will contain at minimum 3
++ arguments (current shell, script, and an ending NULL. */
+ char *new_argv[argc + 1];
+ new_argv[0] = (char *) _PATH_BSHELL;
+ new_argv[1] = (char *) file;
+ if (argc > 1)
+- memcpy (new_argv + 2, argv + 1, argc * sizeof(char *));
++ memcpy (new_argv + 2, argv + 1, (argc - 1) * sizeof(char *));
+ else
+ new_argv[2] = NULL;
+
+@@ -91,10 +92,11 @@ __execvpe (const char *file, char *const argv[], char *const envp[])
+ /* Although GLIBC does not enforce NAME_MAX, we set it as the maximum
+ size to avoid unbounded stack allocation. Same applies for
+ PATH_MAX. */
+- size_t file_len = __strnlen (file, NAME_MAX + 1);
++ size_t file_len = __strnlen (file, NAME_MAX) + 1;
+ size_t path_len = __strnlen (path, PATH_MAX - 1) + 1;
+
+- if ((file_len > NAME_MAX)
++ /* NAME_MAX does not include the terminating null character. */
++ if (((file_len-1) > NAME_MAX)
+ || !__libc_alloca_cutoff (path_len + file_len + 1))
+ {
+ errno = ENAMETOOLONG;
+@@ -103,6 +105,9 @@ __execvpe (const char *file, char *const argv[], char *const envp[])
+
+ const char *subp;
+ bool got_eacces = false;
++ /* The resulting string maximum size would be potentially a entry
++ in PATH plus '/' (path_len + 1) and then the the resulting file name
++ plus '\0' (file_len since it already accounts for the '\0'). */
+ char buffer[path_len + file_len + 1];
+ for (const char *p = path; ; p = subp)
+ {
+@@ -123,7 +128,7 @@ __execvpe (const char *file, char *const argv[], char *const envp[])
+ execute. */
+ char *pend = mempcpy (buffer, p, subp - p);
+ *pend = '/';
+- memcpy (pend + (p < subp), file, file_len + 1);
++ memcpy (pend + (p < subp), file, file_len);
+
+ __execve (buffer, argv, envp);
+
+diff --git a/resolv/Makefile b/resolv/Makefile
+index 8be41d3ae1..a4c86b9762 100644
+--- a/resolv/Makefile
++++ b/resolv/Makefile
+@@ -40,6 +40,9 @@ ifeq ($(have-thread-library),yes)
+ extra-libs += libanl
+ routines += gai_sigqueue
+ tests += tst-res_hconf_reorder
++
++# This test sends millions of packets and is rather slow.
++xtests += tst-resolv-qtypes
+ endif
+ extra-libs-others = $(extra-libs)
+ libresolv-routines := gethnamaddr res_comp res_debug \
+@@ -117,3 +120,5 @@ tst-leaks2-ENV = MALLOC_TRACE=$(objpfx)tst-leaks2.mtrace
+ $(objpfx)mtrace-tst-leaks2.out: $(objpfx)tst-leaks2.out
+ $(common-objpfx)malloc/mtrace $(objpfx)tst-leaks2.mtrace > $@; \
+ $(evaluate-test)
++
++$(objpfx)tst-resolv-qtypes: $(objpfx)libresolv.so $(shared-thread-library)
+diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c
+index 5f9e35701b..d16fa4b8ed 100644
+--- a/resolv/nss_dns/dns-host.c
++++ b/resolv/nss_dns/dns-host.c
+@@ -323,7 +323,7 @@ _nss_dns_gethostbyname4_r (const char *name, struct gaih_addrtuple **pat,
+
+ int olderr = errno;
+ enum nss_status status;
+- int n = __libc_res_nsearch (&_res, name, C_IN, T_UNSPEC,
++ int n = __libc_res_nsearch (&_res, name, C_IN, T_QUERY_A_AND_AAAA,
+ host_buffer.buf->buf, 2048, &host_buffer.ptr,
+ &ans2p, &nans2p, &resplen2, &ans2p_malloced);
+ if (n >= 0)
+diff --git a/resolv/res_mkquery.c b/resolv/res_mkquery.c
+index 12f9730199..d80b5318e5 100644
+--- a/resolv/res_mkquery.c
++++ b/resolv/res_mkquery.c
+@@ -103,6 +103,10 @@ res_nmkquery(res_state statp,
+ int n;
+ u_char *dnptrs[20], **dpp, **lastdnptr;
+
++ if (class < 0 || class > 65535
++ || type < 0 || type > 65535)
++ return -1;
++
+ #ifdef DEBUG
+ if (statp->options & RES_DEBUG)
+ printf(";; res_nmkquery(%s, %s, %s, %s)\n",
+diff --git a/resolv/res_query.c b/resolv/res_query.c
+index 944d1a90f5..07dc6f6583 100644
+--- a/resolv/res_query.c
++++ b/resolv/res_query.c
+@@ -122,7 +122,7 @@ __libc_res_nquery(res_state statp,
+ int n, use_malloc = 0;
+ u_int oflags = statp->_flags;
+
+- size_t bufsize = (type == T_UNSPEC ? 2 : 1) * QUERYSIZE;
++ size_t bufsize = (type == T_QUERY_A_AND_AAAA ? 2 : 1) * QUERYSIZE;
+ u_char *buf = alloca (bufsize);
+ u_char *query1 = buf;
+ int nquery1 = -1;
+@@ -137,7 +137,7 @@ __libc_res_nquery(res_state statp,
+ printf(";; res_query(%s, %d, %d)\n", name, class, type);
+ #endif
+
+- if (type == T_UNSPEC)
++ if (type == T_QUERY_A_AND_AAAA)
+ {
+ n = res_nmkquery(statp, QUERY, name, class, T_A, NULL, 0, NULL,
+ query1, bufsize);
+@@ -190,7 +190,7 @@ __libc_res_nquery(res_state statp,
+ if (__builtin_expect (n <= 0, 0) && !use_malloc) {
+ /* Retry just in case res_nmkquery failed because of too
+ short buffer. Shouldn't happen. */
+- bufsize = (type == T_UNSPEC ? 2 : 1) * MAXPACKET;
++ bufsize = (type == T_QUERY_A_AND_AAAA ? 2 : 1) * MAXPACKET;
+ buf = malloc (bufsize);
+ if (buf != NULL) {
+ query1 = buf;
+diff --git a/resolv/tst-resolv-qtypes.c b/resolv/tst-resolv-qtypes.c
+new file mode 100644
+index 0000000000..b3e60c693b
+--- /dev/null
++++ b/resolv/tst-resolv-qtypes.c
+@@ -0,0 +1,185 @@
++/* Exercise low-level query functions with different QTYPEs.
++ Copyright (C) 2016 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <resolv.h>
++#include <string.h>
++#include <support/check.h>
++#include <support/check_nss.h>
++#include <support/resolv_test.h>
++#include <support/support.h>
++#include <support/test-driver.h>
++#include <support/xmemstream.h>
++
++/* If ture, the response function will send the actual response packet
++ over TCP instead of UDP. */
++static volatile bool force_tcp;
++
++/* Send back a fake resource record matching the QTYPE. */
++static void
++response (const struct resolv_response_context *ctx,
++ struct resolv_response_builder *b,
++ const char *qname, uint16_t qclass, uint16_t qtype)
++{
++ if (force_tcp && ctx->tcp)
++ {
++ resolv_response_init (b, (struct resolv_response_flags) { .tc = 1 });
++ resolv_response_add_question (b, qname, qclass, qtype);
++ return;
++ }
++
++ resolv_response_init (b, (struct resolv_response_flags) { });
++ resolv_response_add_question (b, qname, qclass, qtype);
++ resolv_response_section (b, ns_s_an);
++ resolv_response_open_record (b, qname, qclass, qtype, 0);
++ resolv_response_add_data (b, &qtype, sizeof (qtype));
++ resolv_response_close_record (b);
++}
++
++static const const char *domain = "www.example.com";
++
++static int
++wrap_res_query (int type, unsigned char *answer, int answer_length)
++{
++ return res_query (domain, C_IN, type, answer, answer_length);
++}
++
++static int
++wrap_res_search (int type, unsigned char *answer, int answer_length)
++{
++ return res_query (domain, C_IN, type, answer, answer_length);
++}
++
++static int
++wrap_res_querydomain (int type, unsigned char *answer, int answer_length)
++{
++ return res_querydomain ("www", "example.com", C_IN, type,
++ answer, answer_length);
++}
++
++static int
++wrap_res_send (int type, unsigned char *answer, int answer_length)
++{
++ unsigned char buf[512];
++ int ret = res_mkquery (QUERY, domain, C_IN, type,
++ (const unsigned char *) "", 0, NULL,
++ buf, sizeof (buf));
++ if (type < 0 || type >= 65536)
++ {
++ /* res_mkquery fails for out-of-range record types. */
++ TEST_VERIFY_EXIT (ret == -1);
++ return -1;
++ }
++ TEST_VERIFY_EXIT (ret > 12); /* DNS header length. */
++ return res_send (buf, ret, answer, answer_length);
++}
++
++static int
++wrap_res_nquery (int type, unsigned char *answer, int answer_length)
++{
++ return res_nquery (&_res, domain, C_IN, type, answer, answer_length);
++}
++
++static int
++wrap_res_nsearch (int type, unsigned char *answer, int answer_length)
++{
++ return res_nquery (&_res, domain, C_IN, type, answer, answer_length);
++}
++
++static int
++wrap_res_nquerydomain (int type, unsigned char *answer, int answer_length)
++{
++ return res_nquerydomain (&_res, "www", "example.com", C_IN, type,
++ answer, answer_length);
++}
++
++static int
++wrap_res_nsend (int type, unsigned char *answer, int answer_length)
++{
++ unsigned char buf[512];
++ int ret = res_nmkquery (&_res, QUERY, domain, C_IN, type,
++ (const unsigned char *) "", 0, NULL,
++ buf, sizeof (buf));
++ if (type < 0 || type >= 65536)
++ {
++ /* res_mkquery fails for out-of-range record types. */
++ TEST_VERIFY_EXIT (ret == -1);
++ return -1;
++ }
++ TEST_VERIFY_EXIT (ret > 12); /* DNS header length. */
++ return res_nsend (&_res, buf, ret, answer, answer_length);
++}
++
++static void
++test_function (const char *fname,
++ int (*func) (int type,
++ unsigned char *answer, int answer_length))
++{
++ unsigned char buf[512];
++ for (int tcp = 0; tcp < 2; ++tcp)
++ {
++ force_tcp = tcp;
++ for (unsigned int type = 1; type <= 65535; ++type)
++ {
++ if (test_verbose)
++ printf ("info: sending QTYPE %d with %s (tcp=%d)\n",
++ type, fname, tcp);
++ int ret = func (type, buf, sizeof (buf));
++ if (ret != 47)
++ FAIL_EXIT1 ("%s tcp=%d qtype=%d return value %d",
++ fname,tcp, type, ret);
++ /* One question, one answer record. */
++ TEST_VERIFY (memcmp (buf + 4, "\0\1\0\1\0\0\0\0", 8) == 0);
++ /* Question section. */
++ static const char qname[] = "\3www\7example\3com";
++ size_t qname_length = sizeof (qname);
++ TEST_VERIFY (memcmp (buf + 12, qname, qname_length) == 0);
++ /* RDATA part of answer. */
++ uint16_t type16 = type;
++ TEST_VERIFY (memcmp (buf + ret - 2, &type16, sizeof (type16)) == 0);
++ }
++ }
++
++ TEST_VERIFY (func (-1, buf, sizeof (buf) == -1));
++ TEST_VERIFY (func (65536, buf, sizeof (buf) == -1));
++}
++
++static int
++do_test (void)
++{
++ struct resolv_redirect_config config =
++ {
++ .response_callback = response,
++ };
++ struct resolv_test *obj = resolv_test_start (config);
++
++ test_function ("res_query", &wrap_res_query);
++ test_function ("res_search", &wrap_res_search);
++ test_function ("res_querydomain", &wrap_res_querydomain);
++ test_function ("res_send", &wrap_res_send);
++
++ test_function ("res_nquery", &wrap_res_nquery);
++ test_function ("res_nsearch", &wrap_res_nsearch);
++ test_function ("res_nquerydomain", &wrap_res_nquerydomain);
++ test_function ("res_nsend", &wrap_res_nsend);
++
++ resolv_test_end (obj);
++ return 0;
++}
++
++#define TIMEOUT 300
++#include <support/test-driver.c>
+diff --git a/scripts/backport-support.sh b/scripts/backport-support.sh
+new file mode 100644
+index 0000000000..2ece7ce575
+--- /dev/null
++++ b/scripts/backport-support.sh
+@@ -0,0 +1,110 @@
++#!/bin/bash
++# Create a patch which backports the support/ subdirectory.
++# Copyright (C) 2017 Free Software Foundation, Inc.
++# This file is part of the GNU C Library.
++
++# The GNU C Library is free software; you can redistribute it and/or
++# modify it under the terms of the GNU Lesser General Public
++# License as published by the Free Software Foundation; either
++# version 2.1 of the License, or (at your option) any later version.
++
++# The GNU C Library is distributed in the hope that it will be useful,
++# but WITHOUT ANY WARRANTY; without even the implied warranty of
++# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++# Lesser General Public License for more details.
++
++# You should have received a copy of the GNU Lesser General Public
++# License along with the GNU C Library; if not, see
++# <http://www.gnu.org/licenses/>.
++
++# This script does not backport the Makefile tweaks outside the
++# support/ directory (which need to be backported separately), or the
++# changes to test-skeleton.c (which should not be backported).
++
++set -e
++
++export LC_ALL=C
++export GIT_CONFIG=/dev/null
++export GTT_CONFIG_NOSYSTEM=0
++export GIT_PAGER=
++
++usage () {
++ cat >&2 <<EOF
++usage: $0 {patch|commit}
++EOF
++ exit 1
++}
++
++if test $# -ne 1 ; then
++ usage
++fi
++
++command="$1"
++
++case "$command" in
++ patch|commit)
++ ;;
++ *)
++ usage
++ ;;
++esac
++
++# The upstream branch to work on.
++branch=origin/master
++
++# The commit which added the support/ directory.
++initial_commit=c23de0aacbeaa7a091609b35764bed931475a16d
++
++# We backport the support directory and this script. Directories need
++# to end in a /.
++patch_targets="support/ scripts/backport-support.sh"
++
++latest_commit="$(git log --max-count=1 --pretty=format:%H "$branch" -- \
++ $patch_targets)"
++
++# Simplify the branch name somewhat for reporting.
++branch_name="$(echo "$branch" | sed s,^origin/,,)"
++
++command_patch () {
++ cat <<EOF
++This patch creates the contents of the support/ directory up to this
++upstream commit on the $branch_name branch:
++
++EOF
++ git log --max-count=1 "$latest_commit"
++ echo
++ git diff "$initial_commit"^.."$latest_commit" $patch_targets
++ echo "# Before applying the patch, run this command:" >&2
++ echo "# rm -rf $patch_targets" >&2
++}
++
++command_commit () {
++ git status --porcelain | while read line ; do
++ echo "error: working copy is not clean, cannot commit" >&2
++ exit 1
++ done
++ for path in $patch_targets; do
++ echo "# Processing $path" >&2
++ case "$path" in
++ [a-zA-Z0-9]*/)
++ # Directory.
++ git rm --cached --ignore-unmatch -r "$path"
++ rm -rf "$path"
++ git read-tree --prefix="$path" "$latest_commit":"$path"
++ git checkout "$path"
++ ;;
++ *)
++ # File.
++ git show "$latest_commit":"$path" > "$path"
++ git add "$path"
++ esac
++ done
++ git commit -m "Synchronize support/ infrastructure with $branch_name
++
++This commit updates the support/ subdirectory to
++commit $latest_commit
++on the $branch_name branch.
++"
++}
++
++command_$command
+diff --git a/support/Makefile b/support/Makefile
+new file mode 100644
+index 0000000000..20b0343ade
+--- /dev/null
++++ b/support/Makefile
+@@ -0,0 +1,146 @@
++# Makefile for support library, used only at build and test time
++# Copyright (C) 2016-2017 Free Software Foundation, Inc.
++# This file is part of the GNU C Library.
++
++# The GNU C Library is free software; you can redistribute it and/or
++# modify it under the terms of the GNU Lesser General Public
++# License as published by the Free Software Foundation; either
++# version 2.1 of the License, or (at your option) any later version.
++
++# The GNU C Library is distributed in the hope that it will be useful,
++# but WITHOUT ANY WARRANTY; without even the implied warranty of
++# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++# Lesser General Public License for more details.
++
++# You should have received a copy of the GNU Lesser General Public
++# License along with the GNU C Library; if not, see
++# <http://www.gnu.org/licenses/>.
++
++subdir := support
++
++include ../Makeconfig
++
++extra-libs := libsupport
++extra-libs-others = $(extra-libs)
++extra-libs-noinstall := $(extra-libs)
++
++libsupport-routines = \
++ check \
++ check_addrinfo \
++ check_dns_packet \
++ check_hostent \
++ check_netent \
++ delayed_exit \
++ ignore_stderr \
++ oom_error \
++ resolv_test \
++ set_fortify_handler \
++ support-xstat \
++ support_become_root \
++ support_can_chroot \
++ support_capture_subprocess \
++ support_capture_subprocess_check \
++ support_enter_network_namespace \
++ support_format_address_family \
++ support_format_addrinfo \
++ support_format_dns_packet \
++ support_format_herrno \
++ support_format_hostent \
++ support_format_netent \
++ support_isolate_in_subprocess \
++ support_record_failure \
++ support_run_diff \
++ support_shared_allocate \
++ support_write_file_string \
++ support_test_main \
++ support_test_verify_impl \
++ temp_file \
++ write_message \
++ xaccept \
++ xaccept4 \
++ xasprintf \
++ xbind \
++ xcalloc \
++ xchroot \
++ xclose \
++ xconnect \
++ xdup2 \
++ xfclose \
++ xfopen \
++ xfork \
++ xgetsockname \
++ xlisten \
++ xmalloc \
++ xmemstream \
++ xmkdir \
++ xmmap \
++ xmunmap \
++ xopen \
++ xpipe \
++ xpoll \
++ xpthread_attr_destroy \
++ xpthread_attr_init \
++ xpthread_attr_setdetachstate \
++ xpthread_attr_setstacksize \
++ xpthread_barrier_destroy \
++ xpthread_barrier_init \
++ xpthread_barrier_wait \
++ xpthread_cancel \
++ xpthread_check_return \
++ xpthread_cond_wait \
++ xpthread_create \
++ xpthread_detach \
++ xpthread_join \
++ xpthread_mutex_consistent \
++ xpthread_mutex_destroy \
++ xpthread_mutex_init \
++ xpthread_mutex_lock \
++ xpthread_mutex_unlock \
++ xpthread_mutexattr_destroy \
++ xpthread_mutexattr_init \
++ xpthread_mutexattr_setprotocol \
++ xpthread_mutexattr_setpshared \
++ xpthread_mutexattr_setrobust \
++ xpthread_mutexattr_settype \
++ xpthread_once \
++ xpthread_sigmask \
++ xpthread_spin_lock \
++ xpthread_spin_unlock \
++ xrealloc \
++ xrecvfrom \
++ xsendto \
++ xsetsockopt \
++ xsocket \
++ xstrdup \
++ xwaitpid \
++ xwrite \
++
++libsupport-static-only-routines := $(libsupport-routines)
++# Only build one variant of the library.
++libsupport-inhibit-o := .os
++ifeq ($(build-shared),yes)
++libsupport-inhibit-o += .o
++endif
++
++tests = \
++ README-testing \
++ tst-support-namespace \
++ tst-support_capture_subprocess \
++ tst-support_format_dns_packet \
++ tst-support_record_failure \
++
++ifeq ($(run-built-tests),yes)
++tests-special = \
++ $(objpfx)tst-support_record_failure-2.out
++
++$(objpfx)tst-support_record_failure-2.out: tst-support_record_failure-2.sh \
++ $(objpfx)tst-support_record_failure
++ $(SHELL) $< $(common-objpfx) '$(test-program-prefix-before-env)' \
++ '$(run-program-env)' '$(test-program-prefix-after-env)' \
++ > $@; \
++ $(evaluate-test)
++endif
++
++$(objpfx)tst-support_format_dns_packet: $(common-objpfx)resolv/libresolv.so
++
++include ../Rules
+diff --git a/support/README b/support/README
+new file mode 100644
+index 0000000000..476cfcda59
+--- /dev/null
++++ b/support/README
+@@ -0,0 +1,29 @@
++This subdirectory contains infrastructure which is not put into
++installed libraries, but may be linked into programs (installed or
++not) and tests.
++
++# Error-checking wrappers
++
++These wrappers test for error return codes an terminate the process on
++error. They are declared in these header files:
++
++* support.h
++* xsignal.h
++* xthread.h
++
++In general, new wrappers should be added to support.h if possible.
++However, support.h must remain fully compatible with C90 and therefore
++cannot include headers which use identifers not reserved in C90. If
++the wrappers need additional types, additional headers such as
++signal.h need to be introduced.
++
++# Test framework
++
++The test framework provides a main program for tests, including a
++timeout for hanging tests. See README-testing.c for a minimal
++example, and test-driver.c for details how to use it. The following
++header files provide related declarations:
++
++* check.h
++* temp_file.h
++* test-driver.h
+diff --git a/support/README-testing.c b/support/README-testing.c
+new file mode 100644
+index 0000000000..9d289c3020
+--- /dev/null
++++ b/support/README-testing.c
+@@ -0,0 +1,19 @@
++/* This file contains an example test case which shows minimal use of
++ the test framework. Additional testing hooks are described in
++ <support/test-driver.c>. */
++
++/* This function will be called from the test driver. */
++static int
++do_test (void)
++{
++ if (3 == 5)
++ /* Indicate failure. */
++ return 1;
++ else
++ /* Indicate success. */
++ return 0;
++}
++
++/* This file references do_test above and contains the definition of
++ the main function. */
++#include <support/test-driver.c>
+diff --git a/support/capture_subprocess.h b/support/capture_subprocess.h
+new file mode 100644
+index 0000000000..43caf9bce4
+--- /dev/null
++++ b/support/capture_subprocess.h
+@@ -0,0 +1,61 @@
++/* Capture output from a subprocess.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_CAPTURE_SUBPROCESS_H
++#define SUPPORT_CAPTURE_SUBPROCESS_H
++
++#include <support/xmemstream.h>
++
++struct support_capture_subprocess
++{
++ struct xmemstream out;
++ struct xmemstream err;
++ int status;
++};
++
++/* Invoke CALLBACK (CLOSURE) in a subprocess and capture standard
++ output, standard error, and the exit status. The out.buffer and
++ err.buffer members in the result are null-terminated strings which
++ can be examined by the caller (out.out and err.out are NULL). */
++struct support_capture_subprocess support_capture_subprocess
++ (void (*callback) (void *), void *closure);
++
++/* Deallocate the subprocess data captured by
++ support_capture_subprocess. */
++void support_capture_subprocess_free (struct support_capture_subprocess *);
++
++enum support_capture_allow
++{
++ /* No output is allowed. */
++ sc_allow_none = 0x01,
++ /* Output to stdout is permitted. */
++ sc_allow_stdout = 0x02,
++ /* Output to standard error is permitted. */
++ sc_allow_stderr = 0x04,
++};
++
++/* Check that the subprocess exited with STATUS and that only the
++ allowed outputs happened. ALLOWED is a combination of
++ support_capture_allow flags. Report errors under the CONTEXT
++ message. */
++void support_capture_subprocess_check (struct support_capture_subprocess *,
++ const char *context, int status,
++ int allowed)
++ __attribute__ ((nonnull (1, 2)));
++
++#endif /* SUPPORT_CAPTURE_SUBPROCESS_H */
+diff --git a/support/check.c b/support/check.c
+new file mode 100644
+index 0000000000..592f2bc856
+--- /dev/null
++++ b/support/check.c
+@@ -0,0 +1,57 @@
++/* Support code for reporting test results.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check.h>
++
++#include <stdarg.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/test-driver.h>
++
++static void
++print_failure (const char *file, int line, const char *format, va_list ap)
++{
++ printf ("error: %s:%d: ", file, line);
++ vprintf (format, ap);
++ puts ("");
++}
++
++int
++support_print_failure_impl (const char *file, int line,
++ const char *format, ...)
++{
++ support_record_failure ();
++ va_list ap;
++ va_start (ap, format);
++ print_failure (file, line, format, ap);
++ va_end (ap);
++ return 1;
++}
++
++void
++support_exit_failure_impl (int status, const char *file, int line,
++ const char *format, ...)
++{
++ if (status != EXIT_SUCCESS && status != EXIT_UNSUPPORTED)
++ support_record_failure ();
++ va_list ap;
++ va_start (ap, format);
++ print_failure (file, line, format, ap);
++ va_end (ap);
++ exit (status);
++}
+diff --git a/support/check.h b/support/check.h
+new file mode 100644
+index 0000000000..1d244a3557
+--- /dev/null
++++ b/support/check.h
+@@ -0,0 +1,94 @@
++/* Functionality for reporting test results.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_CHECK_H
++#define SUPPORT_CHECK_H
++
++#include <sys/cdefs.h>
++
++__BEGIN_DECLS
++
++/* Record a test failure, print the failure message to standard output
++ and return 1. */
++#define FAIL_RET(...) \
++ return support_print_failure_impl (__FILE__, __LINE__, __VA_ARGS__)
++
++/* Print the failure message and terminate the process with STATUS.
++ Record a the process as failed if STATUS is neither EXIT_SUCCESS
++ nor EXIT_UNSUPPORTED. */
++#define FAIL_EXIT(status, ...) \
++ support_exit_failure_impl (status, __FILE__, __LINE__, __VA_ARGS__)
++
++/* Record a test failure, print the failure message and terminate with
++ exit status 1. */
++#define FAIL_EXIT1(...) \
++ support_exit_failure_impl (1, __FILE__, __LINE__, __VA_ARGS__)
++
++/* Print failure message and terminate with as unsupported test (exit
++ status of 77). */
++#define FAIL_UNSUPPORTED(...) \
++ support_exit_failure_impl (77, __FILE__, __LINE__, __VA_ARGS__)
++
++/* Record a test failure (but continue executing) if EXPR evaluates to
++ false. */
++#define TEST_VERIFY(expr) \
++ ({ \
++ if (expr) \
++ ; \
++ else \
++ support_test_verify_impl (-1, __FILE__, __LINE__, #expr); \
++ })
++
++/* Record a test failure and exit if EXPR evaluates to false. */
++#define TEST_VERIFY_EXIT(expr) \
++ ({ \
++ if (expr) \
++ ; \
++ else \
++ support_test_verify_impl (1, __FILE__, __LINE__, #expr); \
++ })
++
++int support_print_failure_impl (const char *file, int line,
++ const char *format, ...)
++ __attribute__ ((nonnull (1), format (printf, 3, 4)));
++void support_exit_failure_impl (int exit_status,
++ const char *file, int line,
++ const char *format, ...)
++ __attribute__ ((noreturn, nonnull (2), format (printf, 4, 5)));
++void support_test_verify_impl (int status, const char *file, int line,
++ const char *expr);
++
++/* Record a test failure. This function returns and does not
++ terminate the process. The failure counter is stored in a shared
++ memory mapping, so that failures reported in child processes are
++ visible to the parent process and test driver. This function
++ depends on initialization by an ELF constructor, so it can only be
++ invoked after the test driver has run. Note that this function
++ does not support reporting failures from a DSO. */
++void support_record_failure (void);
++
++/* Internal function called by the test driver. */
++int support_report_failure (int status)
++ __attribute__ ((weak, warn_unused_result));
++
++/* Internal function used to test the failure recording framework. */
++void support_record_failure_reset (void);
++
++__END_DECLS
++
++#endif /* SUPPORT_CHECK_H */
+diff --git a/support/check_addrinfo.c b/support/check_addrinfo.c
+new file mode 100644
+index 0000000000..55895ace3c
+--- /dev/null
++++ b/support/check_addrinfo.c
+@@ -0,0 +1,42 @@
++/* Compare struct addrinfo values against a formatted string.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check_nss.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++#include <support/format_nss.h>
++#include <support/run_diff.h>
++
++void
++check_addrinfo (const char *query_description, struct addrinfo *ai, int ret,
++ const char *expected)
++{
++ char *formatted = support_format_addrinfo (ai, ret);
++ if (strcmp (formatted, expected) != 0)
++ {
++ support_record_failure ();
++ printf ("error: addrinfo comparison failure\n");
++ if (query_description != NULL)
++ printf ("query: %s\n", query_description);
++ support_run_diff ("expected", expected,
++ "actual", formatted);
++ }
++ free (formatted);
++}
+diff --git a/support/check_dns_packet.c b/support/check_dns_packet.c
+new file mode 100644
+index 0000000000..d2a31bed7b
+--- /dev/null
++++ b/support/check_dns_packet.c
+@@ -0,0 +1,42 @@
++/* Check that a DNS packet buffer has the expected contents.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check_nss.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++#include <support/format_nss.h>
++#include <support/run_diff.h>
++
++void
++check_dns_packet (const char *query_description,
++ const unsigned char *buffer, size_t length,
++ const char *expected)
++{
++ char *formatted = support_format_dns_packet (buffer, length);
++ if (strcmp (formatted, expected) != 0)
++ {
++ support_record_failure ();
++ printf ("error: packet comparison failure\n");
++ if (query_description != NULL)
++ printf ("query: %s\n", query_description);
++ support_run_diff ("expected", expected, "actual", formatted);
++ }
++ free (formatted);
++}
+diff --git a/support/check_hostent.c b/support/check_hostent.c
+new file mode 100644
+index 0000000000..890d672d50
+--- /dev/null
++++ b/support/check_hostent.c
+@@ -0,0 +1,42 @@
++/* Compare struct hostent values against a formatted string.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check_nss.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++#include <support/format_nss.h>
++#include <support/run_diff.h>
++
++void
++check_hostent (const char *query_description, struct hostent *h,
++ const char *expected)
++{
++ char *formatted = support_format_hostent (h);
++ if (strcmp (formatted, expected) != 0)
++ {
++ support_record_failure ();
++ printf ("error: hostent comparison failure\n");
++ if (query_description != NULL)
++ printf ("query: %s\n", query_description);
++ support_run_diff ("expected", expected,
++ "actual", formatted);
++ }
++ free (formatted);
++}
+diff --git a/support/check_netent.c b/support/check_netent.c
+new file mode 100644
+index 0000000000..daa3083fd1
+--- /dev/null
++++ b/support/check_netent.c
+@@ -0,0 +1,42 @@
++/* Compare struct netent values against a formatted string.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check_nss.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++#include <support/format_nss.h>
++#include <support/run_diff.h>
++
++void
++check_netent (const char *query_description, struct netent *e,
++ const char *expected)
++{
++ char *formatted = support_format_netent (e);
++ if (strcmp (formatted, expected) != 0)
++ {
++ support_record_failure ();
++ printf ("error: netent comparison failure\n");
++ if (query_description != NULL)
++ printf ("query: %s\n", query_description);
++ support_run_diff ("expected", expected,
++ "actual", formatted);
++ }
++ free (formatted);
++}
+diff --git a/support/check_nss.h b/support/check_nss.h
+new file mode 100644
+index 0000000000..2893f2c295
+--- /dev/null
++++ b/support/check_nss.h
+@@ -0,0 +1,42 @@
++/* Test verification functions for NSS- and DNS-related data.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_CHECK_NSS_H
++#define SUPPORT_CHECK_NSS_H
++
++#include <netdb.h>
++#include <sys/cdefs.h>
++
++__BEGIN_DECLS
++
++/* Compare the data structures against the expected values (which have
++ to be formatted according to the support_format_* functions in
++ <support/format_nss.h>). If there is a difference, a delayed test
++ failure is recorded, and a diff is written to standard output. */
++void check_addrinfo (const char *query_description,
++ struct addrinfo *, int ret, const char *expected);
++void check_dns_packet (const char *query_description,
++ const unsigned char *, size_t, const char *expected);
++void check_hostent (const char *query_description,
++ struct hostent *, const char *expected);
++void check_netent (const char *query_description,
++ struct netent *, const char *expected);
++
++__END_DECLS
++
++#endif /* SUPPORT_CHECK_NSS_H */
+diff --git a/support/delayed_exit.c b/support/delayed_exit.c
+new file mode 100644
+index 0000000000..67442f95df
+--- /dev/null
++++ b/support/delayed_exit.c
+@@ -0,0 +1,55 @@
++/* Time-triggered process termination.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++#include <support/xsignal.h>
++
++#include <stdint.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++#include <time.h>
++
++static void *
++delayed_exit_thread (void *seconds_as_ptr)
++{
++ int seconds = (uintptr_t) seconds_as_ptr;
++ struct timespec delay = { seconds, 0 };
++ struct timespec remaining = { 0 };
++ if (nanosleep (&delay, &remaining) != 0)
++ FAIL_EXIT1 ("nanosleep: %m");
++ /* Exit the process sucessfully. */
++ exit (0);
++ return NULL;
++}
++
++void
++delayed_exit (int seconds)
++{
++ /* Create the new thread with all signals blocked. */
++ sigset_t all_blocked;
++ sigfillset (&all_blocked);
++ sigset_t old_set;
++ xpthread_sigmask (SIG_SETMASK, &all_blocked, &old_set);
++ /* Create a detached thread. */
++ pthread_t thr = xpthread_create
++ (NULL, delayed_exit_thread, (void *) (uintptr_t) seconds);
++ xpthread_detach (thr);
++ /* Restore the original signal mask. */
++ xpthread_sigmask (SIG_SETMASK, &old_set, NULL);
++}
+diff --git a/support/format_nss.h b/support/format_nss.h
+new file mode 100644
+index 0000000000..fb4597c238
+--- /dev/null
++++ b/support/format_nss.h
+@@ -0,0 +1,41 @@
++/* String formatting functions for NSS- and DNS-related data.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_FORMAT_NSS_H
++#define SUPPORT_FORMAT_NSS_H
++
++#include <netdb.h>
++#include <sys/cdefs.h>
++
++__BEGIN_DECLS
++
++/* The following functions format their arguments as human-readable
++ strings (which can span multiple lines). The caller must free the
++ returned buffer. For NULL pointers or failure status arguments,
++ error variables such as h_errno and errno are included in the
++ result. */
++char *support_format_address_family (int);
++char *support_format_addrinfo (struct addrinfo *, int ret);
++char *support_format_dns_packet (const unsigned char *buffer, size_t length);
++char *support_format_herrno (int);
++char *support_format_hostent (struct hostent *);
++char *support_format_netent (struct netent *);
++
++__END_DECLS
++
++#endif /* SUPPORT_FORMAT_NSS_H */
+diff --git a/support/ignore_stderr.c b/support/ignore_stderr.c
+new file mode 100644
+index 0000000000..7b77a2cd56
+--- /dev/null
++++ b/support/ignore_stderr.c
+@@ -0,0 +1,38 @@
++/* Avoid all the buffer overflow messages on stderr.
++ Copyright (C) 2015-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/support.h>
++
++#include <fcntl.h>
++#include <paths.h>
++#include <stdlib.h>
++#include <unistd.h>
++
++void
++ignore_stderr (void)
++{
++ int fd = open (_PATH_DEVNULL, O_WRONLY);
++ if (fd == -1)
++ close (STDERR_FILENO);
++ else
++ {
++ dup2 (fd, STDERR_FILENO);
++ close (fd);
++ }
++ setenv ("LIBC_FATAL_STDERR_", "1", 1);
++}
+diff --git a/support/namespace.h b/support/namespace.h
+new file mode 100644
+index 0000000000..e1ccaa1ef0
+--- /dev/null
++++ b/support/namespace.h
+@@ -0,0 +1,65 @@
++/* Entering namespaces for test case isolation.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_NAMESPACE_H
++#define SUPPORT_NAMESPACE_H
++
++#include <stdbool.h>
++#include <sys/cdefs.h>
++
++__BEGIN_DECLS
++
++/* Attempts to become root (or acquire root-like privileges), possibly
++ with the help of user namespaces. Return true if (restricted) root
++ privileges could be attained in some way. Print diagnostics to
++ standard output.
++
++ Note that this function generally has to be called before a process
++ becomes multi-threaded, otherwise it may fail with insufficient
++ privileges on systems which would support this operation for
++ single-threaded processes. */
++bool support_become_root (void);
++
++/* Return true if this process can perform a chroot operation. In
++ general, this is only possible if support_become_root has been
++ called. Note that the actual test is performed in a subprocess,
++ after fork, so that the file system root of the original process is
++ not changed. */
++bool support_can_chroot (void);
++
++/* Enter a network namespace (and a UTS namespace if possible) and
++ configure the loopback interface. Return true if a network
++ namespace could be created. Print diagnostics to standard output.
++ If a network namespace could be created, but networking in it could
++ not be configured, terminate the process. It is recommended to
++ call support_become_root before this function so that the process
++ has sufficient privileges. */
++bool support_enter_network_namespace (void);
++
++/* Return true if support_enter_network_namespace managed to enter a
++ UTS namespace. */
++bool support_in_uts_namespace (void);
++
++/* Invoke CALLBACK (CLOSURE) in a subprocess created using fork.
++ Terminate the calling process if the subprocess exits with a
++ non-zero exit status. */
++void support_isolate_in_subprocess (void (*callback) (void *), void *closure);
++
++__END_DECLS
++
++#endif
+diff --git a/sysdeps/sparc/sparc64/fpu/s_fdimf.S b/support/oom_error.c
+similarity index 69%
+rename from sysdeps/sparc/sparc64/fpu/s_fdimf.S
+rename to support/oom_error.c
+index 356c23c4e3..7816978273 100644
+--- a/sysdeps/sparc/sparc64/fpu/s_fdimf.S
++++ b/support/oom_error.c
+@@ -1,7 +1,6 @@
+-/* Compute positive difference, sparc 64-bit.
+- Copyright (C) 2013-2016 Free Software Foundation, Inc.
++/* Reporting out-of-memory errors.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+- Contributed by David S. Miller <davem@davemloft.net>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+@@ -17,15 +16,14 @@
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+-#include <sysdep.h>
++#include <support/support.h>
+
+-ENTRY(__fdimf)
+- fcmps %f1, %f3
+- fbug 1f
+- nop
+- fzeros %f1
+- fnegs %f1, %f3
+-1: retl
+- fsubs %f1, %f3, %f0
+-END(__fdimf)
+-weak_alias (__fdimf, fdimf)
++#include <stdio.h>
++#include <stdlib.h>
++
++void
++oom_error (const char *function, size_t size)
++{
++ printf ("%s: unable to allocate %zu bytes: %m\n", function, size);
++ exit (1);
++}
+diff --git a/support/resolv_test.c b/support/resolv_test.c
+new file mode 100644
+index 0000000000..050cd7154b
+--- /dev/null
++++ b/support/resolv_test.c
+@@ -0,0 +1,1202 @@
++/* DNS test framework and libresolv redirection.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/resolv_test.h>
++
++#include <arpa/inet.h>
++#include <errno.h>
++#include <fcntl.h>
++#include <nss.h>
++#include <resolv.h>
++#include <search.h>
++#include <stdlib.h>
++#include <string.h>
++#include <support/check.h>
++#include <support/namespace.h>
++#include <support/support.h>
++#include <support/test-driver.h>
++#include <support/xsocket.h>
++#include <support/xthread.h>
++#include <support/xunistd.h>
++#include <sys/uio.h>
++#include <unistd.h>
++
++/* Response builder. */
++
++enum
++ {
++ max_response_length = 65536
++ };
++
++/* List of pointers to be freed. The hash table implementation
++ (struct hsearch_data) does not provide a way to deallocate all
++ objects, so this approach is used to avoid memory leaks. */
++struct to_be_freed
++{
++ struct to_be_freed *next;
++ void *ptr;
++};
++
++struct resolv_response_builder
++{
++ const unsigned char *query_buffer;
++ size_t query_length;
++
++ size_t offset; /* Bytes written so far in buffer. */
++ ns_sect section; /* Current section in the DNS packet. */
++ unsigned int truncate_bytes; /* Bytes to remove at end of response. */
++ bool drop; /* Discard generated response. */
++ bool close; /* Close TCP client connection. */
++
++ /* Offset of the two-byte RDATA length field in the currently
++ written RDATA sub-structure. 0 if no RDATA is being written. */
++ size_t current_rdata_offset;
++
++ /* Hash table for locating targets for label compression. */
++ struct hsearch_data compression_offsets;
++ /* List of pointers which need to be freed. Used for domain names
++ involved in label compression. */
++ struct to_be_freed *to_be_freed;
++
++ /* Must be last. Not zeroed for performance reasons. */
++ unsigned char buffer[max_response_length];
++};
++
++/* Response builder. */
++
++/* Add a pointer to the list of pointers to be freed when B is
++ deallocated. */
++static void
++response_push_pointer_to_free (struct resolv_response_builder *b, void *ptr)
++{
++ if (ptr == NULL)
++ return;
++ struct to_be_freed *e = xmalloc (sizeof (*e));
++ *e = (struct to_be_freed) {b->to_be_freed, ptr};
++ b->to_be_freed = e;
++}
++
++void
++resolv_response_init (struct resolv_response_builder *b,
++ struct resolv_response_flags flags)
++{
++ if (b->offset > 0)
++ FAIL_EXIT1 ("response_init: called at offset %zu", b->offset);
++ if (b->query_length < 12)
++ FAIL_EXIT1 ("response_init called for a query of size %zu",
++ b->query_length);
++ if (flags.rcode > 15)
++ FAIL_EXIT1 ("response_init: invalid RCODE %u", flags.rcode);
++
++ /* Copy the transaction ID. */
++ b->buffer[0] = b->query_buffer[0];
++ b->buffer[1] = b->query_buffer[1];
++
++ /* Initialize the flags. */
++ b->buffer[2] = 0x80; /* Mark as response. */
++ b->buffer[2] |= b->query_buffer[2] & 0x01; /* Copy the RD bit. */
++ if (flags.tc)
++ b->buffer[2] |= 0x02;
++ b->buffer[3] = 0x80 | flags.rcode; /* Always set RA. */
++
++ /* Fill in the initial section count values. */
++ b->buffer[4] = flags.qdcount >> 8;
++ b->buffer[5] = flags.qdcount;
++ b->buffer[6] = flags.ancount >> 8;
++ b->buffer[7] = flags.ancount;
++ b->buffer[8] = flags.nscount >> 8;
++ b->buffer[9] = flags.nscount;
++ b->buffer[10] = flags.adcount >> 8;
++ b->buffer[11] = flags.adcount;
++
++ b->offset = 12;
++}
++
++void
++resolv_response_section (struct resolv_response_builder *b, ns_sect section)
++{
++ if (b->offset == 0)
++ FAIL_EXIT1 ("resolv_response_section: response_init not called before");
++ if (section < b->section)
++ FAIL_EXIT1 ("resolv_response_section: cannot go back to previous section");
++ b->section = section;
++}
++
++/* Add a single byte to B. */
++static inline void
++response_add_byte (struct resolv_response_builder *b, unsigned char ch)
++{
++ if (b->offset == max_response_length)
++ FAIL_EXIT1 ("DNS response exceeds 64 KiB limit");
++ b->buffer[b->offset] = ch;
++ ++b->offset;
++}
++
++/* Add a 16-bit word VAL to B, in big-endian format. */
++static void
++response_add_16 (struct resolv_response_builder *b, uint16_t val)
++{
++ response_add_byte (b, val >> 8);
++ response_add_byte (b, val);
++}
++
++/* Increment the pers-section record counter in the packet header. */
++static void
++response_count_increment (struct resolv_response_builder *b)
++{
++ unsigned int offset = b->section;
++ offset = 4 + 2 * offset;
++ ++b->buffer[offset + 1];
++ if (b->buffer[offset + 1] == 0)
++ {
++ /* Carry. */
++ ++b->buffer[offset];
++ if (b->buffer[offset] == 0)
++ /* Overflow. */
++ FAIL_EXIT1 ("too many records in section");
++ }
++}
++
++void
++resolv_response_add_question (struct resolv_response_builder *b,
++ const char *name, uint16_t class, uint16_t type)
++{
++ if (b->offset == 0)
++ FAIL_EXIT1 ("resolv_response_add_question: "
++ "resolv_response_init not called");
++ if (b->section != ns_s_qd)
++ FAIL_EXIT1 ("resolv_response_add_question: "
++ "must be called in the question section");
++
++ resolv_response_add_name (b, name);
++ response_add_16 (b, type);
++ response_add_16 (b, class);
++
++ response_count_increment (b);
++}
++
++void
++resolv_response_add_name (struct resolv_response_builder *b,
++ const char *const origname)
++{
++ /* Normalized name. */
++ char *name;
++ /* Normalized name with case preserved. */
++ char *name_case;
++ {
++ size_t namelen = strlen (origname);
++ /* Remove trailing dots. FIXME: Handle trailing quoted dots. */
++ while (namelen > 0 && origname[namelen - 1] == '.')
++ --namelen;
++ name = xmalloc (namelen + 1);
++ name_case = xmalloc (namelen + 1);
++ /* Copy and convert to lowercase. FIXME: This needs to normalize
++ escaping as well. */
++ for (size_t i = 0; i < namelen; ++i)
++ {
++ char ch = origname[i];
++ name_case[i] = ch;
++ if ('A' <= ch && ch <= 'Z')
++ ch = ch - 'A' + 'a';
++ name[i] = ch;
++ }
++ name[namelen] = 0;
++ name_case[namelen] = 0;
++ }
++ char *name_start = name;
++ char *name_case_start = name_case;
++
++ bool compression = false;
++ while (*name)
++ {
++ /* Search for a previous name we can reference. */
++ ENTRY new_entry =
++ {
++ .key = name,
++ .data = (void *) (uintptr_t) b->offset,
++ };
++
++ /* If the label can be a compression target because it is at a
++ reachable offset, add it to the hash table. */
++ ACTION action;
++ if (b->offset < (1 << 12))
++ action = ENTER;
++ else
++ action = FIND;
++
++ /* Search for known compression offsets in the hash table. */
++ ENTRY *e;
++ if (hsearch_r (new_entry, action, &e, &b->compression_offsets) == 0)
++ {
++ if (action == FIND && errno == ESRCH)
++ /* Fall through. */
++ e = NULL;
++ else
++ FAIL_EXIT1 ("hsearch_r failure in name compression: %m");
++ }
++
++ /* The name is known. Reference the previous location. */
++ if (e != NULL && e->data != new_entry.data)
++ {
++ size_t old_offset = (uintptr_t) e->data;
++ response_add_byte (b, 0xC0 | (old_offset >> 8));
++ response_add_byte (b, old_offset);
++ compression = true;
++ break;
++ }
++
++ /* The name does not exist yet. Write one label. First, add
++ room for the label length. */
++ size_t buffer_label_offset = b->offset;
++ response_add_byte (b, 0);
++
++ /* Copy the label. */
++ while (true)
++ {
++ char ch = *name_case;
++ if (ch == '\0')
++ break;
++ ++name;
++ ++name_case;
++ if (ch == '.')
++ break;
++ /* FIXME: Handle escaping. */
++ response_add_byte (b, ch);
++ }
++
++ /* Patch in the label length. */
++ size_t label_length = b->offset - buffer_label_offset - 1;
++ if (label_length == 0)
++ FAIL_EXIT1 ("empty label in name compression: %s", origname);
++ if (label_length > 63)
++ FAIL_EXIT1 ("label too long in name compression: %s", origname);
++ b->buffer[buffer_label_offset] = label_length;
++
++ /* Continue with the tail of the name and the next label. */
++ }
++
++ if (compression)
++ {
++ /* If we found an immediate match for the name, we have not put
++ it into the hash table, and can free it immediately. */
++ if (name == name_start)
++ free (name_start);
++ else
++ response_push_pointer_to_free (b, name_start);
++ }
++ else
++ {
++ /* Terminate the sequence of labels. With compression, this is
++ implicit in the compression reference. */
++ response_add_byte (b, 0);
++ response_push_pointer_to_free (b, name_start);
++ }
++
++ free (name_case_start);
++}
++
++void
++resolv_response_open_record (struct resolv_response_builder *b,
++ const char *name,
++ uint16_t class, uint16_t type, uint32_t ttl)
++{
++ if (b->section == ns_s_qd)
++ FAIL_EXIT1 ("resolv_response_open_record called in question section");
++ if (b->current_rdata_offset != 0)
++ FAIL_EXIT1 ("resolv_response_open_record called with open record");
++
++ resolv_response_add_name (b, name);
++ response_add_16 (b, type);
++ response_add_16 (b, class);
++ response_add_16 (b, ttl >> 16);
++ response_add_16 (b, ttl);
++
++ b->current_rdata_offset = b->offset;
++ /* Add room for the RDATA length. */
++ response_add_16 (b, 0);
++}
++
++
++void
++resolv_response_close_record (struct resolv_response_builder *b)
++{
++ size_t rdata_offset = b->current_rdata_offset;
++ if (rdata_offset == 0)
++ FAIL_EXIT1 ("response_close_record called without open record");
++ size_t rdata_length = b->offset - rdata_offset - 2;
++ if (rdata_length > 65535)
++ FAIL_EXIT1 ("RDATA length %zu exceeds limit", rdata_length);
++ b->buffer[rdata_offset] = rdata_length >> 8;
++ b->buffer[rdata_offset + 1] = rdata_length;
++ response_count_increment (b);
++ b->current_rdata_offset = 0;
++}
++
++void
++resolv_response_add_data (struct resolv_response_builder *b,
++ const void *data, size_t length)
++{
++ size_t remaining = max_response_length - b->offset;
++ if (remaining < length)
++ FAIL_EXIT1 ("resolv_response_add_data: not enough room for %zu bytes",
++ length);
++ memcpy (b->buffer + b->offset, data, length);
++ b->offset += length;
++}
++
++void
++resolv_response_drop (struct resolv_response_builder *b)
++{
++ b->drop = true;
++}
++
++void
++resolv_response_close (struct resolv_response_builder *b)
++{
++ b->close = true;
++}
++
++void
++resolv_response_truncate_data (struct resolv_response_builder *b, size_t count)
++{
++ if (count > 65535)
++ FAIL_EXIT1 ("resolv_response_truncate_data: argument too large: %zu",
++ count);
++ b->truncate_bytes = count;
++}
++
++
++size_t
++resolv_response_length (const struct resolv_response_builder *b)
++{
++ return b->offset;
++}
++
++unsigned char *
++resolv_response_buffer (const struct resolv_response_builder *b)
++{
++ unsigned char *result = xmalloc (b->offset);
++ memcpy (result, b->buffer, b->offset);
++ return result;
++}
++
++static struct resolv_response_builder *
++response_builder_allocate
++ (const unsigned char *query_buffer, size_t query_length)
++{
++ struct resolv_response_builder *b = xmalloc (sizeof (*b));
++ memset (b, 0, offsetof (struct resolv_response_builder, buffer));
++ b->query_buffer = query_buffer;
++ b->query_length = query_length;
++ TEST_VERIFY_EXIT (hcreate_r (10000, &b->compression_offsets) != 0);
++ return b;
++}
++
++static void
++response_builder_free (struct resolv_response_builder *b)
++{
++ struct to_be_freed *current = b->to_be_freed;
++ while (current != NULL)
++ {
++ struct to_be_freed *next = current->next;
++ free (current->ptr);
++ free (current);
++ current = next;
++ }
++ hdestroy_r (&b->compression_offsets);
++ free (b);
++}
++
++/* DNS query processing. */
++
++/* Data extracted from the question section of a DNS packet. */
++struct query_info
++{
++ char qname[MAXDNAME];
++ uint16_t qclass;
++ uint16_t qtype;
++ struct resolv_edns_info edns;
++};
++
++/* Update *INFO from the specified DNS packet. */
++static void
++parse_query (struct query_info *info,
++ const unsigned char *buffer, size_t length)
++{
++ HEADER hd;
++ _Static_assert (sizeof (hd) == 12, "DNS header size");
++ if (length < sizeof (hd))
++ FAIL_EXIT1 ("malformed DNS query: too short: %zu bytes", length);
++ memcpy (&hd, buffer, sizeof (hd));
++
++ if (ntohs (hd.qdcount) != 1)
++ FAIL_EXIT1 ("malformed DNS query: wrong question count: %d",
++ (int) ntohs (hd.qdcount));
++ if (ntohs (hd.ancount) != 0)
++ FAIL_EXIT1 ("malformed DNS query: wrong answer count: %d",
++ (int) ntohs (hd.ancount));
++ if (ntohs (hd.nscount) != 0)
++ FAIL_EXIT1 ("malformed DNS query: wrong authority count: %d",
++ (int) ntohs (hd.nscount));
++ if (ntohs (hd.arcount) > 1)
++ FAIL_EXIT1 ("malformed DNS query: wrong additional count: %d",
++ (int) ntohs (hd.arcount));
++
++ int ret = dn_expand (buffer, buffer + length, buffer + sizeof (hd),
++ info->qname, sizeof (info->qname));
++ if (ret < 0)
++ FAIL_EXIT1 ("malformed DNS query: cannot uncompress QNAME");
++
++ /* Obtain QTYPE and QCLASS. */
++ size_t remaining = length - (12 + ret);
++ struct
++ {
++ uint16_t qtype;
++ uint16_t qclass;
++ } qtype_qclass;
++ if (remaining < sizeof (qtype_qclass))
++ FAIL_EXIT1 ("malformed DNS query: "
++ "query lacks QCLASS/QTYPE, QNAME: %s", info->qname);
++ memcpy (&qtype_qclass, buffer + 12 + ret, sizeof (qtype_qclass));
++ info->qclass = ntohs (qtype_qclass.qclass);
++ info->qtype = ntohs (qtype_qclass.qtype);
++
++ memset (&info->edns, 0, sizeof (info->edns));
++ if (ntohs (hd.arcount) > 0)
++ {
++ /* Parse EDNS record. */
++ struct __attribute__ ((packed, aligned (1)))
++ {
++ uint8_t root;
++ uint16_t rtype;
++ uint16_t payload;
++ uint8_t edns_extended_rcode;
++ uint8_t edns_version;
++ uint16_t flags;
++ uint16_t rdatalen;
++ } rr;
++ _Static_assert (sizeof (rr) == 11, "EDNS record size");
++
++ if (remaining < 4 + sizeof (rr))
++ FAIL_EXIT1 ("mailformed DNS query: no room for EDNS record");
++ memcpy (&rr, buffer + 12 + ret + 4, sizeof (rr));
++ if (rr.root != 0)
++ FAIL_EXIT1 ("malformed DNS query: invalid OPT RNAME: %d\n", rr.root);
++ if (rr.rtype != htons (41))
++ FAIL_EXIT1 ("malformed DNS query: invalid OPT type: %d\n",
++ ntohs (rr.rtype));
++ info->edns.active = true;
++ info->edns.extended_rcode = rr.edns_extended_rcode;
++ info->edns.version = rr.edns_version;
++ info->edns.flags = ntohs (rr.flags);
++ info->edns.payload_size = ntohs (rr.payload);
++ }
++}
++
++
++/* Main testing framework. */
++
++/* Per-server information. One struct is allocated for each test
++ server. */
++struct resolv_test_server
++{
++ /* Local address of the server. UDP and TCP use the same port. */
++ struct sockaddr_in address;
++
++ /* File descriptor of the UDP server, or -1 if this server is
++ disabled. */
++ int socket_udp;
++
++ /* File descriptor of the TCP server, or -1 if this server is
++ disabled. */
++ int socket_tcp;
++
++ /* Counter of the number of responses processed so far. */
++ size_t response_number;
++
++ /* Thread handles for the server threads (if not disabled in the
++ configuration). */
++ pthread_t thread_udp;
++ pthread_t thread_tcp;
++};
++
++/* Main struct for keeping track of libresolv redirection and
++ testing. */
++struct resolv_test
++{
++ /* After initialization, any access to the struct must be performed
++ while this lock is acquired. */
++ pthread_mutex_t lock;
++
++ /* Data for each test server. */
++ struct resolv_test_server servers[resolv_max_test_servers];
++
++ /* Used if config.single_thread_udp is true. */
++ pthread_t thread_udp_single;
++
++ struct resolv_redirect_config config;
++ bool termination_requested;
++};
++
++/* Function implementing a server thread. */
++typedef void (*thread_callback) (struct resolv_test *, int server_index);
++
++/* Storage for thread-specific data, for passing to the
++ thread_callback function. */
++struct thread_closure
++{
++ struct resolv_test *obj; /* Current test object. */
++ thread_callback callback; /* Function to call. */
++ int server_index; /* Index of the implemented server. */
++};
++
++/* Wrap response_callback as a function which can be passed to
++ pthread_create. */
++static void *
++thread_callback_wrapper (void *arg)
++{
++ struct thread_closure *closure = arg;
++ closure->callback (closure->obj, closure->server_index);
++ free (closure);
++ return NULL;
++}
++
++/* Start a server thread for the specified SERVER_INDEX, implemented
++ by CALLBACK. */
++static pthread_t
++start_server_thread (struct resolv_test *obj, int server_index,
++ thread_callback callback)
++{
++ struct thread_closure *closure = xmalloc (sizeof (*closure));
++ *closure = (struct thread_closure)
++ {
++ .obj = obj,
++ .callback = callback,
++ .server_index = server_index,
++ };
++ return xpthread_create (NULL, thread_callback_wrapper, closure);
++}
++
++/* Process one UDP query. Return false if a termination requested has
++ been detected. */
++static bool
++server_thread_udp_process_one (struct resolv_test *obj, int server_index)
++{
++ unsigned char query[512];
++ struct sockaddr_storage peer;
++ socklen_t peerlen = sizeof (peer);
++ size_t length = xrecvfrom (obj->servers[server_index].socket_udp,
++ query, sizeof (query), 0,
++ (struct sockaddr *) &peer, &peerlen);
++ /* Check for termination. */
++ {
++ bool termination_requested;
++ xpthread_mutex_lock (&obj->lock);
++ termination_requested = obj->termination_requested;
++ xpthread_mutex_unlock (&obj->lock);
++ if (termination_requested)
++ return false;
++ }
++
++
++ struct query_info qinfo;
++ parse_query (&qinfo, query, length);
++ if (test_verbose > 0)
++ {
++ if (test_verbose > 1)
++ printf ("info: UDP server %d: incoming query:"
++ " %zd bytes, %s/%u/%u, tnxid=0x%02x%02x\n",
++ server_index, length, qinfo.qname, qinfo.qclass, qinfo.qtype,
++ query[0], query[1]);
++ else
++ printf ("info: UDP server %d: incoming query:"
++ " %zd bytes, %s/%u/%u\n",
++ server_index, length, qinfo.qname, qinfo.qclass, qinfo.qtype);
++ }
++
++ struct resolv_response_context ctx =
++ {
++ .query_buffer = query,
++ .query_length = length,
++ .server_index = server_index,
++ .tcp = false,
++ .edns = qinfo.edns,
++ };
++ struct resolv_response_builder *b = response_builder_allocate (query, length);
++ obj->config.response_callback
++ (&ctx, b, qinfo.qname, qinfo.qclass, qinfo.qtype);
++
++ if (b->drop)
++ {
++ if (test_verbose)
++ printf ("info: UDP server %d: dropping response to %s/%u/%u\n",
++ server_index, qinfo.qname, qinfo.qclass, qinfo.qtype);
++ }
++ else
++ {
++ if (test_verbose)
++ {
++ if (b->offset >= 12)
++ printf ("info: UDP server %d: sending response:"
++ " %zu bytes, RCODE %d (for %s/%u/%u)\n",
++ server_index, b->offset, b->buffer[3] & 0x0f,
++ qinfo.qname, qinfo.qclass, qinfo.qtype);
++ else
++ printf ("info: UDP server %d: sending response: %zu bytes"
++ " (for %s/%u/%u)\n",
++ server_index, b->offset,
++ qinfo.qname, qinfo.qclass, qinfo.qtype);
++ if (b->truncate_bytes > 0)
++ printf ("info: truncated by %u bytes\n", b->truncate_bytes);
++ }
++ size_t to_send = b->offset;
++ if (to_send < b->truncate_bytes)
++ to_send = 0;
++ else
++ to_send -= b->truncate_bytes;
++
++ /* Ignore most errors here because the other end may have closed
++ the socket. */
++ if (sendto (obj->servers[server_index].socket_udp,
++ b->buffer, to_send, 0,
++ (struct sockaddr *) &peer, peerlen) < 0)
++ TEST_VERIFY_EXIT (errno != EBADF);
++ }
++ response_builder_free (b);
++ return true;
++}
++
++/* UDP thread_callback function. Variant for one thread per
++ server. */
++static void
++server_thread_udp (struct resolv_test *obj, int server_index)
++{
++ while (server_thread_udp_process_one (obj, server_index))
++ ;
++}
++
++/* Single-threaded UDP processing function, for the single_thread_udp
++ case. */
++static void *
++server_thread_udp_single (void *closure)
++{
++ struct resolv_test *obj = closure;
++
++ struct pollfd fds[resolv_max_test_servers];
++ for (int server_index = 0; server_index < resolv_max_test_servers;
++ ++server_index)
++ if (obj->config.servers[server_index].disable_udp)
++ fds[server_index] = (struct pollfd) {.fd = -1};
++ else
++ {
++ fds[server_index] = (struct pollfd)
++ {
++ .fd = obj->servers[server_index].socket_udp,
++ .events = POLLIN
++ };
++
++ /* Make the socket non-blocking. */
++ int flags = fcntl (obj->servers[server_index].socket_udp, F_GETFL, 0);
++ if (flags < 0)
++ FAIL_EXIT1 ("fcntl (F_GETFL): %m");
++ flags |= O_NONBLOCK;
++ if (fcntl (obj->servers[server_index].socket_udp, F_SETFL, flags) < 0)
++ FAIL_EXIT1 ("fcntl (F_SETFL): %m");
++ }
++
++ while (true)
++ {
++ xpoll (fds, resolv_max_test_servers, -1);
++ for (int server_index = 0; server_index < resolv_max_test_servers;
++ ++server_index)
++ if (fds[server_index].revents != 0)
++ {
++ if (!server_thread_udp_process_one (obj, server_index))
++ goto out;
++ fds[server_index].revents = 0;
++ }
++ }
++
++ out:
++ return NULL;
++}
++
++/* Start the single UDP handler thread (for the single_thread_udp
++ case). */
++static void
++start_server_thread_udp_single (struct resolv_test *obj)
++{
++ obj->thread_udp_single
++ = xpthread_create (NULL, server_thread_udp_single, obj);
++}
++
++/* Data describing a TCP client connect. */
++struct tcp_thread_closure
++{
++ struct resolv_test *obj;
++ int server_index;
++ int client_socket;
++};
++
++/* Read a complete DNS query packet. If EOF_OK, an immediate
++ end-of-file condition is acceptable. */
++static bool
++read_fully (int fd, void *buf, size_t len, bool eof_ok)
++{
++ const void *const end = buf + len;
++ while (buf < end)
++ {
++ ssize_t ret = read (fd, buf, end - buf);
++ if (ret == 0)
++ {
++ if (!eof_ok)
++ {
++ support_record_failure ();
++ printf ("error: unexpected EOF on TCP connection\n");
++ }
++ return false;
++ }
++ else if (ret < 0)
++ {
++ if (!eof_ok || errno != ECONNRESET)
++ {
++ support_record_failure ();
++ printf ("error: TCP read: %m\n");
++ }
++ return false;
++ }
++ buf += ret;
++ eof_ok = false;
++ }
++ return true;
++}
++
++/* Write an array of iovecs. Terminate the process on failure. */
++static void
++writev_fully (int fd, struct iovec *buffers, size_t count)
++{
++ while (count > 0)
++ {
++ /* Skip zero-length write requests. */
++ if (buffers->iov_len == 0)
++ {
++ ++buffers;
++ --count;
++ continue;
++ }
++ /* Try to rewrite the remaing buffers. */
++ ssize_t ret = writev (fd, buffers, count);
++ if (ret < 0)
++ FAIL_EXIT1 ("writev: %m");
++ if (ret == 0)
++ FAIL_EXIT1 ("writev: invalid return value zero");
++ /* Find the buffers that were successfully written. */
++ while (ret > 0)
++ {
++ if (count == 0)
++ FAIL_EXIT1 ("internal writev consistency failure");
++ /* Current buffer was partially written. */
++ if (buffers->iov_len > (size_t) ret)
++ {
++ buffers->iov_base += ret;
++ buffers->iov_len -= ret;
++ ret = 0;
++ }
++ else
++ {
++ ret -= buffers->iov_len;
++ buffers->iov_len = 0;
++ ++buffers;
++ --count;
++ }
++ }
++ }
++}
++
++/* Thread callback for handling a single established TCP connection to
++ a client. */
++static void *
++server_thread_tcp_client (void *arg)
++{
++ struct tcp_thread_closure *closure = arg;
++
++ while (true)
++ {
++ /* Read packet length. */
++ uint16_t query_length;
++ if (!read_fully (closure->client_socket,
++ &query_length, sizeof (query_length), true))
++ break;
++ query_length = ntohs (query_length);
++
++ /* Read the packet. */
++ unsigned char *query_buffer = xmalloc (query_length);
++ read_fully (closure->client_socket, query_buffer, query_length, false);
++
++ struct query_info qinfo;
++ parse_query (&qinfo, query_buffer, query_length);
++ if (test_verbose > 0)
++ {
++ if (test_verbose > 1)
++ printf ("info: UDP server %d: incoming query:"
++ " %d bytes, %s/%u/%u, tnxid=0x%02x%02x\n",
++ closure->server_index, query_length,
++ qinfo.qname, qinfo.qclass, qinfo.qtype,
++ query_buffer[0], query_buffer[1]);
++ else
++ printf ("info: TCP server %d: incoming query:"
++ " %u bytes, %s/%u/%u\n",
++ closure->server_index, query_length,
++ qinfo.qname, qinfo.qclass, qinfo.qtype);
++ }
++
++ struct resolv_response_context ctx =
++ {
++ .query_buffer = query_buffer,
++ .query_length = query_length,
++ .server_index = closure->server_index,
++ .tcp = true,
++ .edns = qinfo.edns,
++ };
++ struct resolv_response_builder *b = response_builder_allocate
++ (query_buffer, query_length);
++ closure->obj->config.response_callback
++ (&ctx, b, qinfo.qname, qinfo.qclass, qinfo.qtype);
++
++ if (b->drop)
++ {
++ if (test_verbose)
++ printf ("info: TCP server %d: dropping response to %s/%u/%u\n",
++ closure->server_index,
++ qinfo.qname, qinfo.qclass, qinfo.qtype);
++ }
++ else
++ {
++ if (test_verbose)
++ printf ("info: TCP server %d: sending response: %zu bytes"
++ " (for %s/%u/%u)\n",
++ closure->server_index, b->offset,
++ qinfo.qname, qinfo.qclass, qinfo.qtype);
++ uint16_t length = htons (b->offset);
++ size_t to_send = b->offset;
++ if (to_send < b->truncate_bytes)
++ to_send = 0;
++ else
++ to_send -= b->truncate_bytes;
++ struct iovec buffers[2] =
++ {
++ {&length, sizeof (length)},
++ {b->buffer, to_send}
++ };
++ writev_fully (closure->client_socket, buffers, 2);
++ }
++ bool close_flag = b->close;
++ response_builder_free (b);
++ free (query_buffer);
++ if (close_flag)
++ break;
++ }
++
++ xclose (closure->client_socket);
++ free (closure);
++ return NULL;
++}
++
++/* thread_callback for the TCP case. Accept connections and create a
++ new thread for each client. */
++static void
++server_thread_tcp (struct resolv_test *obj, int server_index)
++{
++ while (true)
++ {
++ /* Get the client conenction. */
++ int client_socket = xaccept
++ (obj->servers[server_index].socket_tcp, NULL, NULL);
++
++ /* Check for termination. */
++ xpthread_mutex_lock (&obj->lock);
++ if (obj->termination_requested)
++ {
++ xpthread_mutex_unlock (&obj->lock);
++ xclose (client_socket);
++ break;
++ }
++ xpthread_mutex_unlock (&obj->lock);
++
++ /* Spawn a new thread for handling this connection. */
++ struct tcp_thread_closure *closure = xmalloc (sizeof (*closure));
++ *closure = (struct tcp_thread_closure)
++ {
++ .obj = obj,
++ .server_index = server_index,
++ .client_socket = client_socket,
++ };
++
++ pthread_t thr
++ = xpthread_create (NULL, server_thread_tcp_client, closure);
++ /* TODO: We should keep track of this thread so that we can
++ block in resolv_test_end until it has exited. */
++ xpthread_detach (thr);
++ }
++}
++
++/* Create UDP and TCP server sockets. */
++static void
++make_server_sockets (struct resolv_test_server *server)
++{
++ while (true)
++ {
++ server->socket_udp = xsocket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
++ server->socket_tcp = xsocket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
++
++ /* Pick the address for the UDP socket. */
++ server->address = (struct sockaddr_in)
++ {
++ .sin_family = AF_INET,
++ .sin_addr = {.s_addr = htonl (INADDR_LOOPBACK)}
++ };
++ xbind (server->socket_udp,
++ (struct sockaddr *)&server->address, sizeof (server->address));
++
++ /* Retrieve the address. */
++ socklen_t addrlen = sizeof (server->address);
++ xgetsockname (server->socket_udp,
++ (struct sockaddr *)&server->address, &addrlen);
++
++ /* Bind the TCP socket to the same address. */
++ {
++ int on = 1;
++ xsetsockopt (server->socket_tcp, SOL_SOCKET, SO_REUSEADDR,
++ &on, sizeof (on));
++ }
++ if (bind (server->socket_tcp,
++ (struct sockaddr *)&server->address,
++ sizeof (server->address)) != 0)
++ {
++ /* Port collision. The UDP bind succeeded, but the TCP BIND
++ failed. We assume here that the kernel will pick the
++ next local UDP address randomly. */
++ if (errno == EADDRINUSE)
++ {
++ xclose (server->socket_udp);
++ xclose (server->socket_tcp);
++ continue;
++ }
++ FAIL_EXIT1 ("TCP bind: %m");
++ }
++ xlisten (server->socket_tcp, 5);
++ break;
++ }
++}
++
++/* One-time initialization of NSS. */
++static void
++resolv_redirect_once (void)
++{
++ /* Only use nss_dns. */
++ __nss_configure_lookup ("hosts", "dns");
++ __nss_configure_lookup ("networks", "dns");
++ /* Enter a network namespace for isolation and firewall state
++ cleanup. The tests will still work if these steps fail, but they
++ may be less reliable. */
++ support_become_root ();
++ support_enter_network_namespace ();
++}
++pthread_once_t resolv_redirect_once_var = PTHREAD_ONCE_INIT;
++
++void
++resolv_test_init (void)
++{
++ /* Perform one-time initialization of NSS. */
++ xpthread_once (&resolv_redirect_once_var, resolv_redirect_once);
++}
++
++/* Copy the search path from CONFIG.search to the _res object. */
++static void
++set_search_path (struct resolv_redirect_config config)
++{
++ memset (_res.defdname, 0, sizeof (_res.defdname));
++ memset (_res.dnsrch, 0, sizeof (_res.dnsrch));
++
++ char *current = _res.defdname;
++ char *end = current + sizeof (_res.defdname);
++
++ for (unsigned int i = 0;
++ i < sizeof (config.search) / sizeof (config.search[0]); ++i)
++ {
++ if (config.search[i] == NULL)
++ continue;
++
++ size_t length = strlen (config.search[i]) + 1;
++ size_t remaining = end - current;
++ TEST_VERIFY_EXIT (length <= remaining);
++ memcpy (current, config.search[i], length);
++ _res.dnsrch[i] = current;
++ current += length;
++ }
++}
++
++struct resolv_test *
++resolv_test_start (struct resolv_redirect_config config)
++{
++ /* Apply configuration defaults. */
++ if (config.nscount == 0)
++ config.nscount = resolv_max_test_servers;
++
++ struct resolv_test *obj = xmalloc (sizeof (*obj));
++ *obj = (struct resolv_test) {
++ .config = config,
++ .lock = PTHREAD_MUTEX_INITIALIZER,
++ };
++
++ resolv_test_init ();
++
++ /* Create all the servers, to reserve the necessary ports. */
++ for (int server_index = 0; server_index < config.nscount; ++server_index)
++ make_server_sockets (obj->servers + server_index);
++
++ /* Start server threads. Disable the server ports, as
++ requested. */
++ for (int server_index = 0; server_index < config.nscount; ++server_index)
++ {
++ struct resolv_test_server *server = obj->servers + server_index;
++ if (config.servers[server_index].disable_udp)
++ {
++ xclose (server->socket_udp);
++ server->socket_udp = -1;
++ }
++ else if (!config.single_thread_udp)
++ server->thread_udp = start_server_thread (obj, server_index,
++ server_thread_udp);
++ if (config.servers[server_index].disable_tcp)
++ {
++ xclose (server->socket_tcp);
++ server->socket_tcp = -1;
++ }
++ else
++ server->thread_tcp = start_server_thread (obj, server_index,
++ server_thread_tcp);
++ }
++ if (config.single_thread_udp)
++ start_server_thread_udp_single (obj);
++
++ int timeout = 1;
++
++ /* Initialize libresolv. */
++ TEST_VERIFY_EXIT (res_init () == 0);
++
++ /* Disable IPv6 name server addresses. The code below only
++ overrides the IPv4 addresses. */
++ __res_iclose (&_res, true);
++ _res._u._ext.nscount = 0;
++
++ /* Redirect queries to the server socket. */
++ if (test_verbose)
++ {
++ printf ("info: old timeout value: %d\n", _res.retrans);
++ printf ("info: old retry attempt value: %d\n", _res.retry);
++ printf ("info: old _res.options: 0x%lx\n", _res.options);
++ printf ("info: old _res.nscount value: %d\n", _res.nscount);
++ printf ("info: old _res.ndots value: %d\n", _res.ndots);
++ }
++ _res.retrans = timeout;
++ _res.retry = 4;
++ _res.nscount = config.nscount;
++ _res.options = RES_INIT | RES_RECURSE | RES_DEFNAMES | RES_DNSRCH;
++ _res.ndots = 1;
++ if (test_verbose)
++ {
++ printf ("info: new timeout value: %d\n", _res.retrans);
++ printf ("info: new retry attempt value: %d\n", _res.retry);
++ printf ("info: new _res.options: 0x%lx\n", _res.options);
++ printf ("info: new _res.nscount value: %d\n", _res.nscount);
++ printf ("info: new _res.ndots value: %d\n", _res.ndots);
++ }
++ for (int server_index = 0; server_index < config.nscount; ++server_index)
++ {
++ _res.nsaddr_list[server_index] = obj->servers[server_index].address;
++ if (test_verbose)
++ {
++ char buf[256];
++ TEST_VERIFY_EXIT
++ (inet_ntop (AF_INET, &obj->servers[server_index].address.sin_addr,
++ buf, sizeof (buf)) != NULL);
++ printf ("info: server %d: %s/%u\n",
++ server_index, buf,
++ htons (obj->servers[server_index].address.sin_port));
++ }
++ }
++
++ set_search_path (config);
++
++ return obj;
++}
++
++void
++resolv_test_end (struct resolv_test *obj)
++{
++ res_close ();
++
++ xpthread_mutex_lock (&obj->lock);
++ obj->termination_requested = true;
++ xpthread_mutex_unlock (&obj->lock);
++
++ /* Send trigger packets to unblock the server threads. */
++ for (int server_index = 0; server_index < obj->config.nscount;
++ ++server_index)
++ {
++ if (!obj->config.servers[server_index].disable_udp)
++ {
++ int sock = xsocket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
++ xsendto (sock, "", 1, 0,
++ (struct sockaddr *) &obj->servers[server_index].address,
++ sizeof (obj->servers[server_index].address));
++ xclose (sock);
++ }
++ if (!obj->config.servers[server_index].disable_tcp)
++ {
++ int sock = xsocket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
++ xconnect (sock,
++ (struct sockaddr *) &obj->servers[server_index].address,
++ sizeof (obj->servers[server_index].address));
++ xclose (sock);
++ }
++ }
++
++ if (obj->config.single_thread_udp)
++ xpthread_join (obj->thread_udp_single);
++
++ /* Wait for the server threads to terminate. */
++ for (int server_index = 0; server_index < obj->config.nscount;
++ ++server_index)
++ {
++ if (!obj->config.servers[server_index].disable_udp)
++ {
++ if (!obj->config.single_thread_udp)
++ xpthread_join (obj->servers[server_index].thread_udp);
++ xclose (obj->servers[server_index].socket_udp);
++ }
++ if (!obj->config.servers[server_index].disable_tcp)
++ {
++ xpthread_join (obj->servers[server_index].thread_tcp);
++ xclose (obj->servers[server_index].socket_tcp);
++ }
++ }
++
++ free (obj);
++}
+diff --git a/support/resolv_test.h b/support/resolv_test.h
+new file mode 100644
+index 0000000000..6498751569
+--- /dev/null
++++ b/support/resolv_test.h
+@@ -0,0 +1,180 @@
++/* DNS test framework and libresolv redirection.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_RESOLV_TEST_H
++#define SUPPORT_RESOLV_TEST_H
++
++#include <arpa/nameser.h>
++#include <stdbool.h>
++#include <sys/cdefs.h>
++
++__BEGIN_DECLS
++
++/* Information about EDNS properties of a DNS query. */
++struct resolv_edns_info
++{
++ bool active;
++ uint8_t extended_rcode;
++ uint8_t version;
++ uint16_t flags;
++ uint16_t payload_size;
++};
++
++/* This struct provides context information when the response callback
++ specified in struct resolv_redirect_config is invoked. */
++struct resolv_response_context
++{
++ const unsigned char *query_buffer;
++ size_t query_length;
++ int server_index;
++ bool tcp;
++ struct resolv_edns_info edns;
++};
++
++/* This opaque struct is used to construct responses from within the
++ response callback function. */
++struct resolv_response_builder;
++
++/* This opaque struct collects information about the resolver testing
++ currently in progress. */
++struct resolv_test;
++
++enum
++ {
++ /* Maximum number of test servers supported by the framework. */
++ resolv_max_test_servers = 3,
++ };
++
++/* Configuration settings specific to individual test servers. */
++struct resolv_redirect_server_config
++{
++ bool disable_tcp; /* If true, no TCP server is listening. */
++ bool disable_udp; /* If true, no UDP server is listening. */
++};
++
++/* Instructions for setting up the libresolv redirection. */
++struct resolv_redirect_config
++{
++ /* The response_callback function is called for every incoming DNS
++ packet, over UDP or TCP. It must be specified, the other
++ configuration settings are optional. */
++ void (*response_callback) (const struct resolv_response_context *,
++ struct resolv_response_builder *,
++ const char *qname,
++ uint16_t qclass, uint16_t qtype);
++
++ /* Per-server configuration. */
++ struct resolv_redirect_server_config servers[resolv_max_test_servers];
++
++ /* Search path entries. The first entry serves as the default
++ domain name as well. */
++ const char *search[7];
++
++ /* Number of servers to activate in resolv. 0 means the default,
++ resolv_max_test_servers. */
++ int nscount;
++
++ /* If true, use a single thread to process all UDP queries. This
++ may results in more predictable ordering of queries and
++ responses. */
++ bool single_thread_udp;
++};
++
++/* Configure NSS to use, nss_dns only for aplicable databases, and try
++ to put the process into a network namespace for better isolation.
++ This may have to be called before resolv_test_start, before the
++ process creates any threads. Otherwise, initialization is
++ performed by resolv_test_start implicitly. */
++void resolv_test_init (void);
++
++/* Initiate resolver testing. This updates the _res variable as
++ needed. As a side effect, NSS is reconfigured to use nss_dns only
++ for aplicable databases, and the process may enter a network
++ namespace for better isolation. */
++struct resolv_test *resolv_test_start (struct resolv_redirect_config);
++
++/* Call this function at the end of resolver testing, to free
++ resources and report pending errors (if any). */
++void resolv_test_end (struct resolv_test *);
++
++/* The remaining facilities in this file are used for constructing
++ response packets from the response_callback function. */
++
++/* Special settings for constructing responses from the callback. */
++struct resolv_response_flags
++{
++ /* 4-bit response code to incorporate into the response. */
++ unsigned char rcode;
++
++ /* If true, the TC (truncation) flag will be set. */
++ bool tc;
++
++ /* Initial section count values. Can be used to artificially
++ increase the counts, for malformed packet testing.*/
++ unsigned short qdcount;
++ unsigned short ancount;
++ unsigned short nscount;
++ unsigned short adcount;
++};
++
++/* Begin a new response with the requested flags. Must be called
++ first. */
++void resolv_response_init (struct resolv_response_builder *,
++ struct resolv_response_flags);
++
++/* Switches to the section in the response packet. Only forward
++ movement is supported. */
++void resolv_response_section (struct resolv_response_builder *, ns_sect);
++
++/* Add a question record to the question section. */
++void resolv_response_add_question (struct resolv_response_builder *,
++ const char *name, uint16_t class,
++ uint16_t type);
++/* Starts a new resource record with the specified owner name, class,
++ type, and TTL. Data is supplied with resolv_response_add_data or
++ resolv_response_add_name. */
++void resolv_response_open_record (struct resolv_response_builder *,
++ const char *name, uint16_t class,
++ uint16_t type, uint32_t ttl);
++
++/* Add unstructed bytes to the RDATA part of a resource record. */
++void resolv_response_add_data (struct resolv_response_builder *,
++ const void *, size_t);
++
++/* Add a compressed domain name to the RDATA part of a resource
++ record. */
++void resolv_response_add_name (struct resolv_response_builder *,
++ const char *name);
++
++/* Mark the end of the constructed record. Must be called last. */
++void resolv_response_close_record (struct resolv_response_builder *);
++
++/* Drop this query packet (that is, do not send a response, not even
++ an empty packet). */
++void resolv_response_drop (struct resolv_response_builder *);
++
++/* In TCP mode, close the connection after this packet (if a response
++ is sent). */
++void resolv_response_close (struct resolv_response_builder *);
++
++/* The size of the response packet built so far. */
++size_t resolv_response_length (const struct resolv_response_builder *);
++
++__END_DECLS
++
++#endif /* SUPPORT_RESOLV_TEST_H */
+diff --git a/support/run_diff.h b/support/run_diff.h
+new file mode 100644
+index 0000000000..f65b5dd22c
+--- /dev/null
++++ b/support/run_diff.h
+@@ -0,0 +1,31 @@
++/* Invoke the system diff tool to compare two strings.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_RUN_DIFF_H
++#define SUPPORT_RUN_DIFF_H
++
++/* Compare the two NUL-terminated strings LEFT and RIGHT using the
++ diff tool. Label the sides of the diff with LEFT_LABEL and
++ RIGHT_LABEL, respectively.
++
++ This function assumes that LEFT and RIGHT are different
++ strings. */
++void support_run_diff (const char *left_label, const char *left,
++ const char *right_label, const char *right);
++
++#endif /* SUPPORT_RUN_DIFF_H */
+diff --git a/support/set_fortify_handler.c b/support/set_fortify_handler.c
+new file mode 100644
+index 0000000000..f434a8082a
+--- /dev/null
++++ b/support/set_fortify_handler.c
+@@ -0,0 +1,34 @@
++/* Set signal handler for use in fortify tests.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/support.h>
++
++#include <signal.h>
++
++void
++set_fortify_handler (void (*handler) (int sig))
++{
++ struct sigaction sa;
++
++ sa.sa_handler = handler;
++ sa.sa_flags = 0;
++ sigemptyset (&sa.sa_mask);
++
++ sigaction (SIGABRT, &sa, NULL);
++ ignore_stderr ();
++}
+diff --git a/support/support-xstat.c b/support/support-xstat.c
+new file mode 100644
+index 0000000000..86a81ec601
+--- /dev/null
++++ b/support/support-xstat.c
+@@ -0,0 +1,30 @@
++/* stat64 with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++/* NB: Non-standard file name to avoid sysdeps override for xstat. */
++
++#include <support/check.h>
++#include <support/xunistd.h>
++#include <sys/stat.h>
++
++void
++xstat (const char *path, struct stat64 *result)
++{
++ if (stat64 (path, result) != 0)
++ FAIL_EXIT1 ("stat64 (\"%s\"): %m", path);
++}
+diff --git a/support/support.h b/support/support.h
+new file mode 100644
+index 0000000000..4b5f04c2cc
+--- /dev/null
++++ b/support/support.h
+@@ -0,0 +1,74 @@
++/* Common extra functions.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++/* This header file should only contain definitions compatible with
++ C90. (Using __attribute__ is fine because <features.h> provides a
++ fallback.) */
++
++#ifndef SUPPORT_H
++#define SUPPORT_H
++
++#include <stddef.h>
++#include <sys/cdefs.h>
++
++__BEGIN_DECLS
++
++/* Write a message to standard output. Can be used in signal
++ handlers. */
++void write_message (const char *message) __attribute__ ((nonnull (1)));
++
++/* Avoid all the buffer overflow messages on stderr. */
++void ignore_stderr (void);
++
++/* Set fortification error handler. Used when tests want to verify that bad
++ code is caught by the library. */
++void set_fortify_handler (void (*handler) (int sig));
++
++/* Report an out-of-memory error for the allocation of SIZE bytes in
++ FUNCTION, terminating the process. */
++void oom_error (const char *function, size_t size)
++ __attribute__ ((nonnull (1)));
++
++/* Return a pointer to a memory region of SIZE bytes. The memory is
++ initialized to zero and will be shared with subprocesses (across
++ fork). The returned pointer must be freed using
++ support_shared_free; it is not compatible with the malloc
++ functions. */
++void *support_shared_allocate (size_t size);
++
++/* Deallocate a pointer returned by support_shared_allocate. */
++void support_shared_free (void *);
++
++/* Write CONTENTS to the file PATH. Create or truncate the file as
++ needed. The file mode is 0666 masked by the umask. Terminate the
++ process on error. */
++void support_write_file_string (const char *path, const char *contents);
++
++/* Error-checking wrapper functions which terminate the process on
++ error. */
++
++void *xmalloc (size_t) __attribute__ ((malloc));
++void *xcalloc (size_t n, size_t s) __attribute__ ((malloc));
++void *xrealloc (void *p, size_t n);
++char *xasprintf (const char *format, ...)
++ __attribute__ ((format (printf, 1, 2), malloc));
++char *xstrdup (const char *);
++
++__END_DECLS
++
++#endif /* SUPPORT_H */
+diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/s_fdim.S b/support/support_become_root.c
+similarity index 57%
+rename from sysdeps/sparc/sparc32/sparcv9/fpu/s_fdim.S
+rename to support/support_become_root.c
+index 37f7f44dfa..3fa0bd4ac0 100644
+--- a/sysdeps/sparc/sparc32/sparcv9/fpu/s_fdim.S
++++ b/support/support_become_root.c
+@@ -1,7 +1,6 @@
+-/* Compute positive difference, sparc 32-bit+v9.
+- Copyright (C) 2013-2016 Free Software Foundation, Inc.
++/* Acquire root privileges.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+- Contributed by David S. Miller <davem@davemloft.net>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+@@ -17,24 +16,25 @@
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+-#include <sysdep.h>
+-#include <math_ldbl_opt.h>
++#include <support/namespace.h>
+
+-ENTRY(__fdim)
+- std %o0, [%sp + 72]
+- std %o2, [%sp + 80]
+- ldd [%sp + 72], %f0
+- ldd [%sp + 80], %f2
+- fcmpd %f0, %f2
+- fbug 1f
+- nop
+- fzero %f0
+- fnegd %f0, %f2
+-1: retl
+- fsubd %f0, %f2, %f0
+-END(__fdim)
+-weak_alias (__fdim, fdim)
++#include <sched.h>
++#include <stdio.h>
++#include <unistd.h>
+
+-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
+-compat_symbol (libm, __fdim, fdiml, GLIBC_2_1);
++bool
++support_become_root (void)
++{
++#ifdef CLONE_NEWUSER
++ if (unshare (CLONE_NEWUSER | CLONE_NEWNS) == 0)
++ /* Even if we do not have UID zero, we have extended privileges at
++ this point. */
++ return true;
+ #endif
++ if (setuid (0) != 0)
++ {
++ printf ("warning: could not become root outside namespace (%m)\n");
++ return false;
++ }
++ return true;
++}
+diff --git a/support/support_can_chroot.c b/support/support_can_chroot.c
+new file mode 100644
+index 0000000000..0dfd2deb54
+--- /dev/null
++++ b/support/support_can_chroot.c
+@@ -0,0 +1,65 @@
++/* Return true if the process can perform a chroot operation.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <errno.h>
++#include <stdio.h>
++#include <support/check.h>
++#include <support/namespace.h>
++#include <support/support.h>
++#include <sys/stat.h>
++#include <unistd.h>
++#include <xunistd.h>
++
++static void
++callback (void *closure)
++{
++ int *result = closure;
++ struct stat64 before;
++ xstat ("/dev", &before);
++ if (chroot ("/dev") != 0)
++ {
++ *result = errno;
++ return;
++ }
++ struct stat64 after;
++ xstat ("/", &after);
++ TEST_VERIFY (before.st_dev == after.st_dev);
++ TEST_VERIFY (before.st_ino == after.st_ino);
++ *result = 0;
++}
++
++bool
++support_can_chroot (void)
++{
++ int *result = support_shared_allocate (sizeof (*result));
++ *result = 0;
++ support_isolate_in_subprocess (callback, result);
++ bool ok = *result == 0;
++ if (!ok)
++ {
++ static bool already_warned;
++ if (!already_warned)
++ {
++ already_warned = true;
++ errno = *result;
++ printf ("warning: this process does not support chroot: %m\n");
++ }
++ }
++ support_shared_free (result);
++ return ok;
++}
+diff --git a/support/support_capture_subprocess.c b/support/support_capture_subprocess.c
+new file mode 100644
+index 0000000000..030f124252
+--- /dev/null
++++ b/support/support_capture_subprocess.c
+@@ -0,0 +1,108 @@
++/* Capture output from a subprocess.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/capture_subprocess.h>
++
++#include <errno.h>
++#include <stdlib.h>
++#include <support/check.h>
++#include <support/xunistd.h>
++#include <support/xsocket.h>
++
++static void
++transfer (const char *what, struct pollfd *pfd, struct xmemstream *stream)
++{
++ if (pfd->revents != 0)
++ {
++ char buf[1024];
++ ssize_t ret = TEMP_FAILURE_RETRY (read (pfd->fd, buf, sizeof (buf)));
++ if (ret < 0)
++ {
++ support_record_failure ();
++ printf ("error: reading from subprocess %s: %m", what);
++ pfd->events = 0;
++ pfd->revents = 0;
++ }
++ else if (ret == 0)
++ {
++ /* EOF reached. Stop listening. */
++ pfd->events = 0;
++ pfd->revents = 0;
++ }
++ else
++ /* Store the data just read. */
++ TEST_VERIFY (fwrite (buf, ret, 1, stream->out) == 1);
++ }
++}
++
++struct support_capture_subprocess
++support_capture_subprocess (void (*callback) (void *), void *closure)
++{
++ struct support_capture_subprocess result;
++ xopen_memstream (&result.out);
++ xopen_memstream (&result.err);
++
++ int stdout_pipe[2];
++ xpipe (stdout_pipe);
++ int stderr_pipe[2];
++ xpipe (stderr_pipe);
++
++ TEST_VERIFY (fflush (stdout) == 0);
++ TEST_VERIFY (fflush (stderr) == 0);
++
++ pid_t pid = xfork ();
++ if (pid == 0)
++ {
++ xclose (stdout_pipe[0]);
++ xclose (stderr_pipe[0]);
++ xdup2 (stdout_pipe[1], STDOUT_FILENO);
++ xdup2 (stderr_pipe[1], STDERR_FILENO);
++ callback (closure);
++ _exit (0);
++ }
++ xclose (stdout_pipe[1]);
++ xclose (stderr_pipe[1]);
++
++ struct pollfd fds[2] =
++ {
++ { .fd = stdout_pipe[0], .events = POLLIN },
++ { .fd = stderr_pipe[0], .events = POLLIN },
++ };
++
++ do
++ {
++ xpoll (fds, 2, -1);
++ transfer ("stdout", &fds[0], &result.out);
++ transfer ("stderr", &fds[1], &result.err);
++ }
++ while (fds[0].events != 0 || fds[1].events != 0);
++ xclose (stdout_pipe[0]);
++ xclose (stderr_pipe[0]);
++
++ xfclose_memstream (&result.out);
++ xfclose_memstream (&result.err);
++ xwaitpid (pid, &result.status, 0);
++ return result;
++}
++
++void
++support_capture_subprocess_free (struct support_capture_subprocess *p)
++{
++ free (p->out.buffer);
++ free (p->err.buffer);
++}
+diff --git a/support/support_capture_subprocess_check.c b/support/support_capture_subprocess_check.c
+new file mode 100644
+index 0000000000..708c89f331
+--- /dev/null
++++ b/support/support_capture_subprocess_check.c
+@@ -0,0 +1,67 @@
++/* Verify capture output from a subprocess.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <stdbool.h>
++#include <stdio.h>
++#include <support/capture_subprocess.h>
++#include <support/check.h>
++
++static void
++print_context (const char *context, bool *failed)
++{
++ if (*failed)
++ /* Do not duplicate message. */
++ return;
++ support_record_failure ();
++ printf ("error: subprocess failed: %s\n", context);
++}
++
++void
++support_capture_subprocess_check (struct support_capture_subprocess *proc,
++ const char *context, int status,
++ int allowed)
++{
++ TEST_VERIFY ((allowed & sc_allow_none)
++ || (allowed & sc_allow_stdout)
++ || (allowed & sc_allow_stderr));
++ TEST_VERIFY (!((allowed & sc_allow_none)
++ && ((allowed & sc_allow_stdout)
++ || (allowed & sc_allow_stderr))));
++
++ bool failed = false;
++ if (proc->status != status)
++ {
++ print_context (context, &failed);
++ printf ("error: expected exit status: %d\n", status);
++ printf ("error: actual exit status: %d\n", status);
++ }
++ if (!(allowed & sc_allow_stdout) && proc->out.length != 0)
++ {
++ print_context (context, &failed);
++ printf ("error: unexpected output from subprocess\n");
++ fwrite (proc->out.buffer, proc->out.length, 1, stdout);
++ puts ("\n");
++ }
++ if (!(allowed & sc_allow_stderr) && proc->err.length != 0)
++ {
++ print_context (context, &failed);
++ printf ("error: unexpected error output from subprocess\n");
++ fwrite (proc->err.buffer, proc->err.length, 1, stdout);
++ puts ("\n");
++ }
++}
+diff --git a/support/support_enter_network_namespace.c b/support/support_enter_network_namespace.c
+new file mode 100644
+index 0000000000..28b0ee29cf
+--- /dev/null
++++ b/support/support_enter_network_namespace.c
+@@ -0,0 +1,75 @@
++/* Enter a network namespace.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/namespace.h>
++
++#include <net/if.h>
++#include <sched.h>
++#include <stdio.h>
++#include <string.h>
++#include <support/check.h>
++#include <support/xsocket.h>
++#include <support/xunistd.h>
++#include <sys/ioctl.h>
++#include <unistd.h>
++
++static bool in_uts_namespace;
++
++bool
++support_enter_network_namespace (void)
++{
++#ifdef CLONE_NEWUTS
++ if (unshare (CLONE_NEWUTS) == 0)
++ in_uts_namespace = true;
++ else
++ printf ("warning: unshare (CLONE_NEWUTS) failed: %m\n");
++#endif
++
++#ifdef CLONE_NEWNET
++ if (unshare (CLONE_NEWNET) == 0)
++ {
++ /* Bring up the loopback interface. */
++ int fd = xsocket (AF_UNIX, SOCK_DGRAM | SOCK_CLOEXEC, 0);
++ struct ifreq req;
++ strcpy (req.ifr_name, "lo");
++ TEST_VERIFY_EXIT (ioctl (fd, SIOCGIFFLAGS, &req) == 0);
++ bool already_up = req.ifr_flags & IFF_UP;
++ if (already_up)
++ /* This means that we likely have not achieved isolation from
++ the parent namespace. */
++ printf ("warning: loopback interface already exists"
++ " in new network namespace\n");
++ else
++ {
++ req.ifr_flags |= IFF_UP | IFF_RUNNING;
++ TEST_VERIFY_EXIT (ioctl (fd, SIOCSIFFLAGS, &req) == 0);
++ }
++ xclose (fd);
++
++ return !already_up;
++ }
++#endif
++ printf ("warning: could not enter network namespace\n");
++ return false;
++}
++
++bool
++support_in_uts_namespace (void)
++{
++ return in_uts_namespace;
++}
+diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/s_fdimf.S b/support/support_format_address_family.c
+similarity index 63%
+rename from sysdeps/sparc/sparc32/sparcv9/fpu/s_fdimf.S
+rename to support/support_format_address_family.c
+index 9e0e3f21be..5d42c42a45 100644
+--- a/sysdeps/sparc/sparc32/sparcv9/fpu/s_fdimf.S
++++ b/support/support_format_address_family.c
+@@ -1,7 +1,6 @@
+-/* Compute positive difference, sparc 32-bit+v9.
+- Copyright (C) 2013-2016 Free Software Foundation, Inc.
++/* Convert an address family to a string.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+- Contributed by David S. Miller <davem@davemloft.net>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+@@ -17,19 +16,20 @@
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+-#include <sysdep.h>
++#include <support/format_nss.h>
+
+-ENTRY(__fdimf)
+- st %o0, [%sp + 72]
+- st %o1, [%sp + 76]
+- ld [%sp + 72], %f0
+- ld [%sp + 76], %f1
+- fcmps %f0, %f1
+- fbug 1f
+- nop
+- fzeros %f0
+- fnegs %f0, %f1
+-1: retl
+- fsubs %f0, %f1, %f0
+-END(__fdimf)
+-weak_alias (__fdimf, fdimf)
++#include <support/support.h>
++
++char *
++support_format_address_family (int family)
++{
++ switch (family)
++ {
++ case AF_INET:
++ return xstrdup ("INET");
++ case AF_INET6:
++ return xstrdup ("INET6");
++ default:
++ return xasprintf ("<unknown address family %d>", family);
++ }
++}
+diff --git a/support/support_format_addrinfo.c b/support/support_format_addrinfo.c
+new file mode 100644
+index 0000000000..eedb030591
+--- /dev/null
++++ b/support/support_format_addrinfo.c
+@@ -0,0 +1,239 @@
++/* Convert struct addrinfo values to a string.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/format_nss.h>
++
++#include <arpa/inet.h>
++#include <errno.h>
++#include <stdio.h>
++#include <support/support.h>
++#include <support/xmemstream.h>
++
++static size_t
++socket_address_length (int family)
++{
++ switch (family)
++ {
++ case AF_INET:
++ return sizeof (struct sockaddr_in);
++ case AF_INET6:
++ return sizeof (struct sockaddr_in6);
++ default:
++ return -1;
++ }
++}
++
++static void
++format_ai_flags_1 (FILE *out, struct addrinfo *ai, int flag, const char *name,
++ int * flags_printed)
++{
++ if ((ai->ai_flags & flag) != 0)
++ fprintf (out, " %s", name);
++ *flags_printed |= flag;
++}
++
++static void
++format_ai_flags (FILE *out, struct addrinfo *ai)
++{
++ if (ai == NULL)
++ return;
++
++ if (ai->ai_flags != 0)
++ {
++ fprintf (out, "flags:");
++ int flags_printed = 0;
++#define FLAG(flag) format_ai_flags_1 (out, ai, flag, #flag, &flags_printed)
++ FLAG (AI_PASSIVE);
++ FLAG (AI_CANONNAME);
++ FLAG (AI_NUMERICHOST);
++ FLAG (AI_V4MAPPED);
++ FLAG (AI_ALL);
++ FLAG (AI_ADDRCONFIG);
++ FLAG (AI_IDN);
++ FLAG (AI_CANONIDN);
++ FLAG (AI_IDN_ALLOW_UNASSIGNED);
++ FLAG (AI_IDN_USE_STD3_ASCII_RULES);
++ FLAG (AI_NUMERICSERV);
++#undef FLAG
++ int remaining = ai->ai_flags & ~flags_printed;
++ if (remaining != 0)
++ fprintf (out, " %08x", remaining);
++ fprintf (out, "\n");
++ }
++
++ /* Report flag mismatches within the list. */
++ int flags = ai->ai_flags;
++ int index = 1;
++ ai = ai->ai_next;
++ while (ai != NULL)
++ {
++ if (ai->ai_flags != flags)
++ fprintf (out, "error: flags at %d: 0x%x expected, 0x%x actual\n",
++ index, flags, ai->ai_flags);
++ ai = ai->ai_next;
++ ++index;
++ }
++}
++
++static void
++format_ai_canonname (FILE *out, struct addrinfo *ai)
++{
++ if (ai == NULL)
++ return;
++ if (ai->ai_canonname != NULL)
++ fprintf (out, "canonname: %s\n", ai->ai_canonname);
++
++ /* Report incorrectly set ai_canonname fields on subsequent list
++ entries. */
++ int index = 1;
++ ai = ai->ai_next;
++ while (ai != NULL)
++ {
++ if (ai->ai_canonname != NULL)
++ fprintf (out, "error: canonname set at %d: %s\n",
++ index, ai->ai_canonname);
++ ai = ai->ai_next;
++ ++index;
++ }
++}
++
++static void
++format_ai_one (FILE *out, struct addrinfo *ai)
++{
++ {
++ char type_buf[32];
++ const char *type_str;
++ char proto_buf[32];
++ const char *proto_str;
++
++ /* ai_socktype */
++ switch (ai->ai_socktype)
++ {
++ case SOCK_RAW:
++ type_str = "RAW";
++ break;
++ case SOCK_DGRAM:
++ type_str = "DGRAM";
++ break;
++ case SOCK_STREAM:
++ type_str = "STREAM";
++ break;
++ default:
++ snprintf (type_buf, sizeof (type_buf), "%d", ai->ai_socktype);
++ type_str = type_buf;
++ }
++
++ /* ai_protocol */
++ switch (ai->ai_protocol)
++ {
++ case IPPROTO_IP:
++ proto_str = "IP";
++ break;
++ case IPPROTO_UDP:
++ proto_str = "UDP";
++ break;
++ case IPPROTO_TCP:
++ proto_str = "TCP";
++ break;
++ default:
++ snprintf (proto_buf, sizeof (proto_buf), "%d", ai->ai_protocol);
++ proto_str = proto_buf;
++ }
++ fprintf (out, "address: %s/%s", type_str, proto_str);
++ }
++
++ /* ai_addrlen */
++ if (ai->ai_addrlen != socket_address_length (ai->ai_family))
++ {
++ char *family = support_format_address_family (ai->ai_family);
++ fprintf (out, "error: invalid address length %d for %s\n",
++ ai->ai_addrlen, family);
++ free (family);
++ }
++
++ /* ai_addr */
++ {
++ char buf[128];
++ uint16_t port;
++ const char *ret;
++ switch (ai->ai_family)
++ {
++ case AF_INET:
++ {
++ struct sockaddr_in *sin = (struct sockaddr_in *) ai->ai_addr;
++ ret = inet_ntop (AF_INET, &sin->sin_addr, buf, sizeof (buf));
++ port = sin->sin_port;
++ }
++ break;
++ case AF_INET6:
++ {
++ struct sockaddr_in6 *sin = (struct sockaddr_in6 *) ai->ai_addr;
++ ret = inet_ntop (AF_INET6, &sin->sin6_addr, buf, sizeof (buf));
++ port = sin->sin6_port;
++ }
++ break;
++ default:
++ errno = EAFNOSUPPORT;
++ ret = NULL;
++ }
++ if (ret == NULL)
++ fprintf (out, "error: inet_top failed: %m\n");
++ else
++ fprintf (out, " %s %u\n", buf, ntohs (port));
++ }
++}
++
++/* Format all the addresses in one address family. */
++static void
++format_ai_family (FILE *out, struct addrinfo *ai, int family)
++{
++ while (ai)
++ {
++ if (ai->ai_family == family)
++ format_ai_one (out, ai);
++ ai = ai->ai_next;
++ }
++}
++
++char *
++support_format_addrinfo (struct addrinfo *ai, int ret)
++{
++ int errno_copy = errno;
++
++ struct xmemstream mem;
++ xopen_memstream (&mem);
++ if (ret != 0)
++ {
++ fprintf (mem.out, "error: %s\n", gai_strerror (ret));
++ if (ret == EAI_SYSTEM)
++ {
++ errno = errno_copy;
++ fprintf (mem.out, "error: %m\n");
++ }
++ }
++ else
++ {
++ format_ai_flags (mem.out, ai);
++ format_ai_canonname (mem.out, ai);
++ format_ai_family (mem.out, ai, AF_INET);
++ format_ai_family (mem.out, ai, AF_INET6);
++ }
++
++ xfclose_memstream (&mem);
++ return mem.buffer;
++}
+diff --git a/support/support_format_dns_packet.c b/support/support_format_dns_packet.c
+new file mode 100644
+index 0000000000..2992c57971
+--- /dev/null
++++ b/support/support_format_dns_packet.c
+@@ -0,0 +1,222 @@
++/* Convert a DNS packet to a human-readable representation.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/format_nss.h>
++
++#include <arpa/inet.h>
++#include <resolv.h>
++#include <support/check.h>
++#include <support/support.h>
++#include <support/xmemstream.h>
++
++struct in_buffer
++{
++ const unsigned char *data;
++ size_t size;
++};
++
++static inline bool
++extract_8 (struct in_buffer *in, unsigned char *value)
++{
++ if (in->size == 0)
++ return false;
++ *value = in->data[0];
++ ++in->data;
++ --in->size;
++ return true;
++}
++
++static inline bool
++extract_16 (struct in_buffer *in, unsigned short *value)
++{
++ if (in->size < 2)
++ return false;
++ *value = (in->data[0] << 8) | in->data[1];
++ in->data += 2;
++ in->size -= 2;
++ return true;
++}
++
++static inline bool
++extract_32 (struct in_buffer *in, unsigned *value)
++{
++ if (in->size < 4)
++ return false;
++ unsigned a = in->data[0];
++ unsigned b = in->data[1];
++ unsigned c = in->data[2];
++ unsigned d = in->data[3];
++ *value = (a << 24) | (b << 16) | (c << 8) | d;
++ in->data += 4;
++ in->size -= 4;
++ return true;
++}
++
++static inline bool
++extract_bytes (struct in_buffer *in, size_t length, struct in_buffer *value)
++{
++ if (in->size < length)
++ return false;
++ *value = (struct in_buffer) {in->data, length};
++ in->data += length;
++ in->size -= length;
++ return true;
++}
++
++struct dname
++{
++ char name[MAXDNAME + 1];
++};
++
++static bool
++extract_name (struct in_buffer full, struct in_buffer *in, struct dname *value)
++{
++ const unsigned char *full_end = full.data + full.size;
++ /* Sanity checks; these indicate buffer misuse. */
++ TEST_VERIFY_EXIT
++ (!(in->data < full.data || in->data > full_end
++ || in->size > (size_t) (full_end - in->data)));
++ int ret = dn_expand (full.data, full_end, in->data,
++ value->name, sizeof (value->name));
++ if (ret < 0)
++ return false;
++ in->data += ret;
++ in->size -= ret;
++ return true;
++}
++
++char *
++support_format_dns_packet (const unsigned char *buffer, size_t length)
++{
++ struct in_buffer full = { buffer, length };
++ struct in_buffer in = full;
++ struct xmemstream mem;
++ xopen_memstream (&mem);
++
++ unsigned short txnid;
++ unsigned short flags;
++ unsigned short qdcount;
++ unsigned short ancount;
++ unsigned short nscount;
++ unsigned short adcount;
++ if (!(extract_16 (&in, &txnid)
++ && extract_16 (&in, &flags)
++ && extract_16 (&in, &qdcount)
++ && extract_16 (&in, &ancount)
++ && extract_16 (&in, &nscount)
++ && extract_16 (&in, &adcount)))
++ {
++ fprintf (mem.out, "error: could not parse DNS header\n");
++ goto out;
++ }
++ if (qdcount != 1)
++ {
++ fprintf (mem.out, "error: question count is %d, not 1\n", qdcount);
++ goto out;
++ }
++ struct dname qname;
++ if (!extract_name (full, &in, &qname))
++ {
++ fprintf (mem.out, "error: malformed QNAME\n");
++ goto out;
++ }
++ unsigned short qtype;
++ unsigned short qclass;
++ if (!(extract_16 (&in, &qtype)
++ && extract_16 (&in, &qclass)))
++ {
++ fprintf (mem.out, "error: malformed question\n");
++ goto out;
++ }
++ if (qtype != T_A && qtype != T_AAAA && qtype != T_PTR)
++ {
++ fprintf (mem.out, "error: unsupported QTYPE %d\n", qtype);
++ goto out;
++ }
++
++ fprintf (mem.out, "name: %s\n", qname.name);
++
++ for (int i = 0; i < ancount; ++i)
++ {
++ struct dname rname;
++ if (!extract_name (full, &in, &rname))
++ {
++ fprintf (mem.out, "error: malformed record name\n");
++ goto out;
++ }
++ unsigned short rtype;
++ unsigned short rclass;
++ unsigned ttl;
++ unsigned short rdlen;
++ struct in_buffer rdata;
++ if (!(extract_16 (&in, &rtype)
++ && extract_16 (&in, &rclass)
++ && extract_32 (&in, &ttl)
++ && extract_16 (&in, &rdlen)
++ && extract_bytes (&in, rdlen, &rdata)))
++ {
++ fprintf (mem.out, "error: malformed record header\n");
++ goto out;
++ }
++ /* Skip non-matching record types. */
++ if ((rtype != qtype && rtype != T_CNAME) || rclass != qclass)
++ continue;
++ switch (rtype)
++ {
++ case T_A:
++ if (rdlen == 4)
++ fprintf (mem.out, "address: %d.%d.%d.%d\n",
++ rdata.data[0],
++ rdata.data[1],
++ rdata.data[2],
++ rdata.data[3]);
++ else
++ fprintf (mem.out, "error: A record of size %d: %s\n",
++ rdlen, rname.name);
++ break;
++ case T_AAAA:
++ {
++ if (rdlen == 16)
++ {
++ char buf[100];
++ if (inet_ntop (AF_INET6, rdata.data, buf, sizeof (buf)) == NULL)
++ fprintf (mem.out, "error: AAAA record decoding failed: %m\n");
++ else
++ fprintf (mem.out, "address: %s\n", buf);
++ }
++ else
++ fprintf (mem.out, "error: AAAA record of size %d: %s\n",
++ rdlen, rname.name);
++ }
++ break;
++ case T_CNAME:
++ case T_PTR:
++ {
++ struct dname name;
++ if (extract_name (full, &rdata, &name))
++ fprintf (mem.out, "name: %s\n", name.name);
++ else
++ fprintf (mem.out, "error: malformed CNAME/PTR record\n");
++ }
++ }
++ }
++
++ out:
++ xfclose_memstream (&mem);
++ return mem.buffer;
++}
+diff --git a/support/support_format_herrno.c b/support/support_format_herrno.c
+new file mode 100644
+index 0000000000..493d6ae962
+--- /dev/null
++++ b/support/support_format_herrno.c
+@@ -0,0 +1,45 @@
++/* Convert a h_errno error code to a string.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/format_nss.h>
++
++#include <support/support.h>
++
++char *
++support_format_herrno (int code)
++{
++ const char *errstr;
++ switch (code)
++ {
++ case HOST_NOT_FOUND:
++ errstr = "HOST_NOT_FOUND";
++ break;
++ case NO_ADDRESS:
++ errstr = "NO_ADDRESS";
++ break;
++ case NO_RECOVERY:
++ errstr = "NO_RECOVERY";
++ break;
++ case TRY_AGAIN:
++ errstr = "TRY_AGAIN";
++ break;
++ default:
++ return xasprintf ("<invalid h_errno value %d>\n", code);
++ }
++ return xstrdup (errstr);
++}
+diff --git a/support/support_format_hostent.c b/support/support_format_hostent.c
+new file mode 100644
+index 0000000000..5b5f26082e
+--- /dev/null
++++ b/support/support_format_hostent.c
+@@ -0,0 +1,75 @@
++/* Convert a struct hostent object to a string.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/format_nss.h>
++
++#include <arpa/inet.h>
++#include <stdio.h>
++#include <support/support.h>
++#include <support/xmemstream.h>
++
++static int
++address_length (int family)
++{
++ switch (family)
++ {
++ case AF_INET:
++ return 4;
++ case AF_INET6:
++ return 16;
++ }
++ return -1;
++}
++
++char *
++support_format_hostent (struct hostent *h)
++{
++ if (h == NULL)
++ {
++ char *value = support_format_herrno (h_errno);
++ char *result = xasprintf ("error: %s\n", value);
++ free (value);
++ return result;
++ }
++
++ struct xmemstream mem;
++ xopen_memstream (&mem);
++
++ fprintf (mem.out, "name: %s\n", h->h_name);
++ for (char **alias = h->h_aliases; *alias != NULL; ++alias)
++ fprintf (mem.out, "alias: %s\n", *alias);
++ for (unsigned i = 0; h->h_addr_list[i] != NULL; ++i)
++ {
++ char buf[128];
++ if (inet_ntop (h->h_addrtype, h->h_addr_list[i],
++ buf, sizeof (buf)) == NULL)
++ fprintf (mem.out, "error: inet_ntop failed: %m\n");
++ else
++ fprintf (mem.out, "address: %s\n", buf);
++ }
++ if (h->h_length != address_length (h->h_addrtype))
++ {
++ char *family = support_format_address_family (h->h_addrtype);
++ fprintf (mem.out, "error: invalid address length %d for %s\n",
++ h->h_length, family);
++ free (family);
++ }
++
++ xfclose_memstream (&mem);
++ return mem.buffer;
++}
+diff --git a/support/support_format_netent.c b/support/support_format_netent.c
+new file mode 100644
+index 0000000000..020f5720d9
+--- /dev/null
++++ b/support/support_format_netent.c
+@@ -0,0 +1,52 @@
++/* Convert a struct netent object to a string.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/format_nss.h>
++
++#include <arpa/inet.h>
++#include <stdio.h>
++#include <support/support.h>
++#include <support/xmemstream.h>
++
++char *
++support_format_netent (struct netent *e)
++{
++ if (e == NULL)
++ {
++ char *value = support_format_herrno (h_errno);
++ char *result = xasprintf ("error: %s\n", value);
++ free (value);
++ return result;
++ }
++
++ struct xmemstream mem;
++ xopen_memstream (&mem);
++
++ if (e->n_name != NULL)
++ fprintf (mem.out, "name: %s\n", e->n_name);
++ for (char **ap = e->n_aliases; *ap != NULL; ++ap)
++ fprintf (mem.out, "alias: %s\n", *ap);
++ if (e->n_addrtype != AF_INET)
++ fprintf (mem.out, "addrtype: %d\n", e->n_addrtype);
++ /* On alpha, e->n_net is an unsigned long. */
++ unsigned int n_net = e->n_net;
++ fprintf (mem.out, "net: 0x%08x\n", n_net);
++
++ xfclose_memstream (&mem);
++ return mem.buffer;
++}
+diff --git a/support/support_isolate_in_subprocess.c b/support/support_isolate_in_subprocess.c
+new file mode 100644
+index 0000000000..cf48614383
+--- /dev/null
++++ b/support/support_isolate_in_subprocess.c
+@@ -0,0 +1,38 @@
++/* Run a function in a subprocess.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check.h>
++#include <support/xunistd.h>
++
++void
++support_isolate_in_subprocess (void (*callback) (void *), void *closure)
++{
++ pid_t pid = xfork ();
++ if (pid == 0)
++ {
++ /* Child process. */
++ callback (closure);
++ _exit (0);
++ }
++
++ /* Parent process. */
++ int status;
++ xwaitpid (pid, &status, 0);
++ if (status != 0)
++ FAIL_EXIT1 ("child process exited with status %d", status);
++}
+diff --git a/support/support_record_failure.c b/support/support_record_failure.c
+new file mode 100644
+index 0000000000..684055c746
+--- /dev/null
++++ b/support/support_record_failure.c
+@@ -0,0 +1,106 @@
++/* Global test failure counter.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check.h>
++#include <support/support.h>
++#include <support/test-driver.h>
++
++#include <stdbool.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <sys/mman.h>
++#include <unistd.h>
++
++/* This structure keeps track of test failures. The counter is
++ incremented on each failure. The failed member is set to true if a
++ failure is detected, so that even if the counter wraps around to
++ zero, the failure of a test can be detected.
++
++ The init constructor function below puts *state on a shared
++ annonymous mapping, so that failure reports from subprocesses
++ propagate to the parent process. */
++struct test_failures
++{
++ unsigned int counter;
++ unsigned int failed;
++};
++static struct test_failures *state;
++
++static __attribute__ ((constructor)) void
++init (void)
++{
++ void *ptr = mmap (NULL, sizeof (*state), PROT_READ | PROT_WRITE,
++ MAP_ANONYMOUS | MAP_SHARED, -1, 0);
++ if (ptr == MAP_FAILED)
++ {
++ printf ("error: could not map %zu bytes: %m\n", sizeof (*state));
++ exit (1);
++ }
++ /* Zero-initialization of the struct is sufficient. */
++ state = ptr;
++}
++
++void
++support_record_failure (void)
++{
++ if (state == NULL)
++ {
++ write_message
++ ("error: support_record_failure called without initialization\n");
++ _exit (1);
++ }
++ /* Relaxed MO is sufficient because we are only interested in the
++ values themselves, in isolation. */
++ __atomic_store_n (&state->failed, 1, __ATOMIC_RELEASE);
++ __atomic_add_fetch (&state->counter, 1, __ATOMIC_RELEASE);
++}
++
++int
++support_report_failure (int status)
++{
++ if (state == NULL)
++ {
++ write_message
++ ("error: support_report_failure called without initialization\n");
++ return 1;
++ }
++
++ /* Relaxed MO is sufficient because acquire test result reporting
++ assumes that exiting from the main thread happens before the
++ error reporting via support_record_failure, which requires some
++ form of external synchronization. */
++ bool failed = __atomic_load_n (&state->failed, __ATOMIC_RELAXED);
++ if (failed)
++ printf ("error: %u test failures\n",
++ __atomic_load_n (&state->counter, __ATOMIC_RELAXED));
++
++ if ((status == 0 || status == EXIT_UNSUPPORTED) && failed)
++ /* If we have a recorded failure, it overrides a non-failure
++ report from the test function. */
++ status = 1;
++ return status;
++}
++
++void
++support_record_failure_reset (void)
++{
++ /* Only used for testing the test framework, with external
++ synchronization, but use release MO for consistency. */
++ __atomic_store_n (&state->failed, 0, __ATOMIC_RELAXED);
++ __atomic_add_fetch (&state->counter, 0, __ATOMIC_RELAXED);
++}
+diff --git a/support/support_run_diff.c b/support/support_run_diff.c
+new file mode 100644
+index 0000000000..f5155de727
+--- /dev/null
++++ b/support/support_run_diff.c
+@@ -0,0 +1,76 @@
++/* Invoke the system diff tool to compare two strings.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/run_diff.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <string.h>
++#include <support/check.h>
++#include <support/support.h>
++#include <support/temp_file.h>
++#include <support/xunistd.h>
++#include <sys/wait.h>
++
++static char *
++write_to_temp_file (const char *prefix, const char *str)
++{
++ char *template = xasprintf ("run_diff-%s", prefix);
++ char *name = NULL;
++ int fd = create_temp_file (template, &name);
++ TEST_VERIFY_EXIT (fd >= 0);
++ free (template);
++ xwrite (fd, str, strlen (str));
++ xclose (fd);
++ return name;
++}
++
++void
++support_run_diff (const char *left_label, const char *left,
++ const char *right_label, const char *right)
++{
++ /* Ensure that the diff command output is ordered properly with
++ standard output. */
++ TEST_VERIFY_EXIT (fflush (stdout) == 0);
++
++ char *left_path = write_to_temp_file ("left-diff", left);
++ char *right_path = write_to_temp_file ("right-diff", right);
++
++ pid_t pid = xfork ();
++ if (pid == 0)
++ {
++ execlp ("diff", "diff", "-u",
++ "--label", left_label, "--label", right_label,
++ "--", left_path, right_path,
++ NULL);
++ _exit (17);
++ }
++ else
++ {
++ int status;
++ xwaitpid (pid, &status, 0);
++ if (!WIFEXITED (status) || WEXITSTATUS (status) != 1)
++ printf ("warning: could not run diff, exit status: %d\n"
++ "*** %s ***\n%s\n"
++ "*** %s ***\n%s\n",
++ status, left_label, left, right_label, right);
++ }
++
++ free (right_path);
++ free (left_path);
++}
+diff --git a/support/support_shared_allocate.c b/support/support_shared_allocate.c
+new file mode 100644
+index 0000000000..61d088e8cf
+--- /dev/null
++++ b/support/support_shared_allocate.c
+@@ -0,0 +1,57 @@
++/* Allocate a memory region shared across processes.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <errno.h>
++#include <stddef.h>
++#include <support/support.h>
++#include <support/xunistd.h>
++#include <sys/mman.h>
++
++/* Header for the allocation. It contains the size of the allocation
++ for subsequent unmapping. */
++struct header
++{
++ size_t total_size;
++ char data[] __attribute__ ((aligned (__alignof__ (max_align_t))));
++};
++
++void *
++support_shared_allocate (size_t size)
++{
++ size_t total_size = size + offsetof (struct header, data);
++ if (total_size < size)
++ {
++ errno = ENOMEM;
++ oom_error (__func__, size);
++ return NULL;
++ }
++ else
++ {
++ struct header *result = xmmap (NULL, total_size, PROT_READ | PROT_WRITE,
++ MAP_ANONYMOUS | MAP_SHARED, -1);
++ result->total_size = total_size;
++ return &result->data;
++ }
++}
++
++void
++support_shared_free (void *data)
++{
++ struct header *header = data - offsetof (struct header, data);
++ xmunmap (header, header->total_size);
++}
+diff --git a/support/support_test_main.c b/support/support_test_main.c
+new file mode 100644
+index 0000000000..914d64f603
+--- /dev/null
++++ b/support/support_test_main.c
+@@ -0,0 +1,423 @@
++/* Main worker function for the test driver.
++ Copyright (C) 1998-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/test-driver.h>
++#include <support/check.h>
++#include <support/temp_file-internal.h>
++
++#include <assert.h>
++#include <errno.h>
++#include <getopt.h>
++#include <malloc.h>
++#include <signal.h>
++#include <stdbool.h>
++#include <stdlib.h>
++#include <string.h>
++#include <sys/param.h>
++#include <sys/resource.h>
++#include <sys/types.h>
++#include <sys/wait.h>
++#include <time.h>
++#include <unistd.h>
++
++static const struct option default_options[] =
++{
++ TEST_DEFAULT_OPTIONS
++ { NULL, 0, NULL, 0 }
++};
++
++/* Show people how to run the program. */
++static void
++usage (const struct option *options)
++{
++ size_t i;
++
++ printf ("Usage: %s [options]\n"
++ "\n"
++ "Environment Variables:\n"
++ " TIMEOUTFACTOR An integer used to scale the timeout\n"
++ " TMPDIR Where to place temporary files\n"
++ " TEST_COREDUMPS Do not disable coredumps if set\n"
++ "\n",
++ program_invocation_short_name);
++ printf ("Options:\n");
++ for (i = 0; options[i].name; ++i)
++ {
++ int indent;
++
++ indent = printf (" --%s", options[i].name);
++ if (options[i].has_arg == required_argument)
++ indent += printf (" <arg>");
++ printf ("%*s", 25 - indent, "");
++ switch (options[i].val)
++ {
++ case 'v':
++ printf ("Increase the output verbosity");
++ break;
++ case OPT_DIRECT:
++ printf ("Run the test directly (instead of forking & monitoring)");
++ break;
++ case OPT_TESTDIR:
++ printf ("Override the TMPDIR env var");
++ break;
++ }
++ printf ("\n");
++ }
++}
++
++/* The PID of the test process. */
++static pid_t test_pid;
++
++/* The cleanup handler passed to test_main. */
++static void (*cleanup_function) (void);
++
++/* Timeout handler. We kill the child and exit with an error. */
++static void
++__attribute__ ((noreturn))
++signal_handler (int sig)
++{
++ int killed;
++ int status;
++
++ assert (test_pid > 1);
++ /* Kill the whole process group. */
++ kill (-test_pid, SIGKILL);
++ /* In case setpgid failed in the child, kill it individually too. */
++ kill (test_pid, SIGKILL);
++
++ /* Wait for it to terminate. */
++ int i;
++ for (i = 0; i < 5; ++i)
++ {
++ killed = waitpid (test_pid, &status, WNOHANG|WUNTRACED);
++ if (killed != 0)
++ break;
++
++ /* Delay, give the system time to process the kill. If the
++ nanosleep() call return prematurely, all the better. We
++ won't restart it since this probably means the child process
++ finally died. */
++ struct timespec ts;
++ ts.tv_sec = 0;
++ ts.tv_nsec = 100000000;
++ nanosleep (&ts, NULL);
++ }
++ if (killed != 0 && killed != test_pid)
++ {
++ printf ("Failed to kill test process: %m\n");
++ exit (1);
++ }
++
++ if (cleanup_function != NULL)
++ cleanup_function ();
++
++ if (sig == SIGINT)
++ {
++ signal (sig, SIG_DFL);
++ raise (sig);
++ }
++
++ if (killed == 0 || (WIFSIGNALED (status) && WTERMSIG (status) == SIGKILL))
++ puts ("Timed out: killed the child process");
++ else if (WIFSTOPPED (status))
++ printf ("Timed out: the child process was %s\n",
++ strsignal (WSTOPSIG (status)));
++ else if (WIFSIGNALED (status))
++ printf ("Timed out: the child process got signal %s\n",
++ strsignal (WTERMSIG (status)));
++ else
++ printf ("Timed out: killed the child process but it exited %d\n",
++ WEXITSTATUS (status));
++
++ /* Exit with an error. */
++ exit (1);
++}
++
++/* Run test_function or test_function_argv. */
++static int
++run_test_function (int argc, char **argv, const struct test_config *config)
++{
++ if (config->test_function != NULL)
++ return config->test_function ();
++ else if (config->test_function_argv != NULL)
++ return config->test_function_argv (argc, argv);
++ else
++ {
++ printf ("error: no test function defined\n");
++ exit (1);
++ }
++}
++
++static bool test_main_called;
++
++const char *test_dir = NULL;
++unsigned int test_verbose = 0;
++
++/* If test failure reporting has been linked in, it may contribute
++ additional test failures. */
++static int
++adjust_exit_status (int status)
++{
++ if (support_report_failure != NULL)
++ return support_report_failure (status);
++ return status;
++}
++
++int
++support_test_main (int argc, char **argv, const struct test_config *config)
++{
++ if (test_main_called)
++ {
++ printf ("error: test_main called for a second time\n");
++ exit (1);
++ }
++ test_main_called = true;
++ const struct option *options;
++ if (config->options != NULL)
++ options = config->options;
++ else
++ options = default_options;
++
++ cleanup_function = config->cleanup_function;
++
++ int direct = 0; /* Directly call the test function? */
++ int status;
++ int opt;
++ unsigned int timeoutfactor = 1;
++ pid_t termpid;
++
++ if (!config->no_mallopt)
++ {
++ /* Make uses of freed and uninitialized memory known. Do not
++ pull in a definition for mallopt if it has not been defined
++ already. */
++ extern __typeof__ (mallopt) mallopt __attribute__ ((weak));
++ if (mallopt != NULL)
++ mallopt (M_PERTURB, 42);
++ }
++
++ while ((opt = getopt_long (argc, argv, "+", options, NULL)) != -1)
++ switch (opt)
++ {
++ case '?':
++ usage (options);
++ exit (1);
++ case 'v':
++ ++test_verbose;
++ break;
++ case OPT_DIRECT:
++ direct = 1;
++ break;
++ case OPT_TESTDIR:
++ test_dir = optarg;
++ break;
++ default:
++ if (config->cmdline_function != NULL)
++ config->cmdline_function (opt);
++ }
++
++ /* If set, read the test TIMEOUTFACTOR value from the environment.
++ This value is used to scale the default test timeout values. */
++ char *envstr_timeoutfactor = getenv ("TIMEOUTFACTOR");
++ if (envstr_timeoutfactor != NULL)
++ {
++ char *envstr_conv = envstr_timeoutfactor;
++ unsigned long int env_fact;
++
++ env_fact = strtoul (envstr_timeoutfactor, &envstr_conv, 0);
++ if (*envstr_conv == '\0' && envstr_conv != envstr_timeoutfactor)
++ timeoutfactor = MAX (env_fact, 1);
++ }
++
++ /* Set TMPDIR to specified test directory. */
++ if (test_dir != NULL)
++ {
++ setenv ("TMPDIR", test_dir, 1);
++
++ if (chdir (test_dir) < 0)
++ {
++ printf ("chdir: %m\n");
++ exit (1);
++ }
++ }
++ else
++ {
++ test_dir = getenv ("TMPDIR");
++ if (test_dir == NULL || test_dir[0] == '\0')
++ test_dir = "/tmp";
++ }
++ if (support_set_test_dir != NULL)
++ support_set_test_dir (test_dir);
++
++ int timeout = config->timeout;
++ if (timeout == 0)
++ timeout = DEFAULT_TIMEOUT;
++
++ /* Make sure we see all message, even those on stdout. */
++ setvbuf (stdout, NULL, _IONBF, 0);
++
++ /* Make sure temporary files are deleted. */
++ if (support_delete_temp_files != NULL)
++ atexit (support_delete_temp_files);
++
++ /* Correct for the possible parameters. */
++ argv[optind - 1] = argv[0];
++ argv += optind - 1;
++ argc -= optind - 1;
++
++ /* Call the initializing function, if one is available. */
++ if (config->prepare_function != NULL)
++ config->prepare_function (argc, argv);
++
++ const char *envstr_direct = getenv ("TEST_DIRECT");
++ if (envstr_direct != NULL)
++ {
++ FILE *f = fopen (envstr_direct, "w");
++ if (f == NULL)
++ {
++ printf ("cannot open TEST_DIRECT output file '%s': %m\n",
++ envstr_direct);
++ exit (1);
++ }
++
++ fprintf (f, "timeout=%u\ntimeoutfactor=%u\n",
++ config->timeout, timeoutfactor);
++ if (config->expected_status != 0)
++ fprintf (f, "exit=%u\n", config->expected_status);
++ if (config->expected_signal != 0)
++ fprintf (f, "signal=%s\n", strsignal (config->expected_signal));
++
++ if (support_print_temp_files != NULL)
++ support_print_temp_files (f);
++
++ fclose (f);
++ direct = 1;
++ }
++
++ bool disable_coredumps;
++ {
++ const char *coredumps = getenv ("TEST_COREDUMPS");
++ disable_coredumps = coredumps == NULL || coredumps[0] == '\0';
++ }
++
++ /* If we are not expected to fork run the function immediately. */
++ if (direct)
++ return adjust_exit_status (run_test_function (argc, argv, config));
++
++ /* Set up the test environment:
++ - prevent core dumps
++ - set up the timer
++ - fork and execute the function. */
++
++ test_pid = fork ();
++ if (test_pid == 0)
++ {
++ /* This is the child. */
++ if (disable_coredumps)
++ {
++ /* Try to avoid dumping core. This is necessary because we
++ run the test from the source tree, and the coredumps
++ would end up there (and not in the build tree). */
++ struct rlimit core_limit;
++ core_limit.rlim_cur = 0;
++ core_limit.rlim_max = 0;
++ setrlimit (RLIMIT_CORE, &core_limit);
++ }
++
++ /* We put the test process in its own pgrp so that if it bogusly
++ generates any job control signals, they won't hit the whole build. */
++ if (setpgid (0, 0) != 0)
++ printf ("Failed to set the process group ID: %m\n");
++
++ /* Execute the test function and exit with the return value. */
++ exit (run_test_function (argc, argv, config));
++ }
++ else if (test_pid < 0)
++ {
++ printf ("Cannot fork test program: %m\n");
++ exit (1);
++ }
++
++ /* Set timeout. */
++ signal (SIGALRM, signal_handler);
++ alarm (timeout * timeoutfactor);
++
++ /* Make sure we clean up if the wrapper gets interrupted. */
++ signal (SIGINT, signal_handler);
++
++ /* Wait for the regular termination. */
++ termpid = TEMP_FAILURE_RETRY (waitpid (test_pid, &status, 0));
++ if (termpid == -1)
++ {
++ printf ("Waiting for test program failed: %m\n");
++ exit (1);
++ }
++ if (termpid != test_pid)
++ {
++ printf ("Oops, wrong test program terminated: expected %ld, got %ld\n",
++ (long int) test_pid, (long int) termpid);
++ exit (1);
++ }
++
++ /* Process terminated normaly without timeout etc. */
++ if (WIFEXITED (status))
++ {
++ if (config->expected_status == 0)
++ {
++ if (config->expected_signal == 0)
++ /* Exit with the return value of the test. */
++ return adjust_exit_status (WEXITSTATUS (status));
++ else
++ {
++ printf ("Expected signal '%s' from child, got none\n",
++ strsignal (config->expected_signal));
++ exit (1);
++ }
++ }
++ else
++ {
++ /* Non-zero exit status is expected */
++ if (WEXITSTATUS (status) != config->expected_status)
++ {
++ printf ("Expected status %d, got %d\n",
++ config->expected_status, WEXITSTATUS (status));
++ exit (1);
++ }
++ }
++ return adjust_exit_status (0);
++ }
++ /* Process was killed by timer or other signal. */
++ else
++ {
++ if (config->expected_signal == 0)
++ {
++ printf ("Didn't expect signal from child: got `%s'\n",
++ strsignal (WTERMSIG (status)));
++ exit (1);
++ }
++ else if (WTERMSIG (status) != config->expected_signal)
++ {
++ printf ("Incorrect signal from child: got `%s', need `%s'\n",
++ strsignal (WTERMSIG (status)),
++ strsignal (config->expected_signal));
++ exit (1);
++ }
++
++ return adjust_exit_status (0);
++ }
++}
+diff --git a/support/support_test_verify_impl.c b/support/support_test_verify_impl.c
+new file mode 100644
+index 0000000000..5bae38f8b1
+--- /dev/null
++++ b/support/support_test_verify_impl.c
+@@ -0,0 +1,33 @@
++/* Implementation of the TEST_VERIFY and TEST_VERIFY_EXIT macros.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++
++void
++support_test_verify_impl (int status, const char *file, int line,
++ const char *expr)
++{
++ support_record_failure ();
++ printf ("error: %s:%d: not true: %s\n", file, line, expr);
++ if (status >= 0)
++ exit (status);
++
++}
+diff --git a/support/support_write_file_string.c b/support/support_write_file_string.c
+new file mode 100644
+index 0000000000..48e89597f3
+--- /dev/null
++++ b/support/support_write_file_string.c
+@@ -0,0 +1,39 @@
++/* Write a string to a file.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <fcntl.h>
++#include <string.h>
++#include <support/check.h>
++#include <xunistd.h>
++
++void
++support_write_file_string (const char *path, const char *contents)
++{
++ int fd = xopen (path, O_CREAT | O_TRUNC | O_WRONLY, 0666);
++ const char *end = contents + strlen (contents);
++ for (const char *p = contents; p < end; )
++ {
++ ssize_t ret = write (fd, p, end - p);
++ if (ret < 0)
++ FAIL_EXIT1 ("cannot write to \"%s\": %m", path);
++ if (ret == 0)
++ FAIL_EXIT1 ("zero-length write to \"%s\"", path);
++ p += ret;
++ }
++ xclose (fd);
++}
+diff --git a/support/temp_file-internal.h b/support/temp_file-internal.h
+new file mode 100644
+index 0000000000..fb6cceb065
+--- /dev/null
++++ b/support/temp_file-internal.h
+@@ -0,0 +1,31 @@
++/* Internal weak declarations for temporary file handling.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_TEMP_FILE_INTERNAL_H
++#define SUPPORT_TEMP_FILE_INTERNAL_H
++
++/* These functions are called by the test driver if they are
++ defined. Tests should not call them directly. */
++
++#include <stdio.h>
++
++void support_set_test_dir (const char *name) __attribute__ ((weak));
++void support_delete_temp_files (void) __attribute__ ((weak));
++void support_print_temp_files (FILE *) __attribute__ ((weak));
++
++#endif /* SUPPORT_TEMP_FILE_INTERNAL_H */
+diff --git a/support/temp_file.c b/support/temp_file.c
+new file mode 100644
+index 0000000000..fdb2477ab9
+--- /dev/null
++++ b/support/temp_file.c
+@@ -0,0 +1,132 @@
++/* Temporary file handling for tests.
++ Copyright (C) 1998-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++/* This is required to get an mkstemp which can create large files on
++ some 32-bit platforms. */
++#define _FILE_OFFSET_BITS 64
++
++#include <support/temp_file.h>
++#include <support/temp_file-internal.h>
++#include <support/support.h>
++
++#include <paths.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <string.h>
++#include <unistd.h>
++
++/* List of temporary files. */
++static struct temp_name_list
++{
++ struct temp_name_list *next;
++ char *name;
++ pid_t owner;
++} *temp_name_list;
++
++/* Location of the temporary files. Set by the test skeleton via
++ support_set_test_dir. The string is not be freed. */
++static const char *test_dir = _PATH_TMP;
++
++void
++add_temp_file (const char *name)
++{
++ struct temp_name_list *newp
++ = (struct temp_name_list *) xcalloc (sizeof (*newp), 1);
++ char *newname = strdup (name);
++ if (newname != NULL)
++ {
++ newp->name = newname;
++ newp->next = temp_name_list;
++ newp->owner = getpid ();
++ temp_name_list = newp;
++ }
++ else
++ free (newp);
++}
++
++int
++create_temp_file (const char *base, char **filename)
++{
++ char *fname;
++ int fd;
++
++ fname = (char *) xmalloc (strlen (test_dir) + 1 + strlen (base)
++ + sizeof ("XXXXXX"));
++ strcpy (stpcpy (stpcpy (stpcpy (fname, test_dir), "/"), base), "XXXXXX");
++
++ fd = mkstemp (fname);
++ if (fd == -1)
++ {
++ printf ("cannot open temporary file '%s': %m\n", fname);
++ free (fname);
++ return -1;
++ }
++
++ add_temp_file (fname);
++ if (filename != NULL)
++ *filename = fname;
++ else
++ free (fname);
++
++ return fd;
++}
++
++/* Helper functions called by the test skeleton follow. */
++
++void
++support_set_test_dir (const char *path)
++{
++ test_dir = path;
++}
++
++void
++support_delete_temp_files (void)
++{
++ pid_t pid = getpid ();
++ while (temp_name_list != NULL)
++ {
++ /* Only perform the removal if the path was registed in the same
++ process, as identified by the PID. (This assumes that the
++ parent process which registered the temporary file sticks
++ around, to prevent PID reuse.) */
++ if (temp_name_list->owner == pid)
++ {
++ if (remove (temp_name_list->name) != 0)
++ printf ("warning: could not remove temporary file: %s: %m\n",
++ temp_name_list->name);
++ }
++ free (temp_name_list->name);
++
++ struct temp_name_list *next = temp_name_list->next;
++ free (temp_name_list);
++ temp_name_list = next;
++ }
++}
++
++void
++support_print_temp_files (FILE *f)
++{
++ if (temp_name_list != NULL)
++ {
++ struct temp_name_list *n;
++ fprintf (f, "temp_files=(\n");
++ for (n = temp_name_list; n != NULL; n = n->next)
++ fprintf (f, " '%s'\n", n->name);
++ fprintf (f, ")\n");
++ }
++}
+diff --git a/support/temp_file.h b/support/temp_file.h
+new file mode 100644
+index 0000000000..6fed8df1ea
+--- /dev/null
++++ b/support/temp_file.h
+@@ -0,0 +1,37 @@
++/* Declarations for temporary file handling.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_TEMP_FILE_H
++#define SUPPORT_TEMP_FILE_H
++
++#include <sys/cdefs.h>
++
++__BEGIN_DECLS
++
++/* Schedule a temporary file for deletion on exit. */
++void add_temp_file (const char *name);
++
++/* Create a temporary file. Return the opened file descriptor on
++ success, or -1 on failure. Write the file name to *FILENAME if
++ FILENAME is not NULL. In this case, the caller is expected to free
++ *FILENAME. */
++int create_temp_file (const char *base, char **filename);
++
++__END_DECLS
++
++#endif /* SUPPORT_TEMP_FILE_H */
+diff --git a/support/test-driver.c b/support/test-driver.c
+new file mode 100644
+index 0000000000..482066dbeb
+--- /dev/null
++++ b/support/test-driver.c
+@@ -0,0 +1,156 @@
++/* Main function for test programs.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++/* This file should be included from test cases. It will define a
++ main function which provides the test wrapper.
++
++ It assumes that the test case defines a function
++
++ int do_test (void);
++
++ and arranges for that function being called under the test wrapper.
++ The do_test function should return 0 to indicate a passing test, 1
++ to indicate a failing test, or 77 to indicate an unsupported test.
++ Other result values could be used to indicate a failing test, but
++ the result of the expression is passed to exit and exit only
++ returns the lower 8 bits of its input. A non-zero return with some
++ values could cause a test to incorrectly be considered passing when
++ it really failed. For this reason, the function should always
++ return 0 (EXIT_SUCCESS), 1 (EXIT_FAILURE), or 77
++ (EXIT_UNSUPPORTED).
++
++ The test function may print out diagnostic or warning messages as well
++ as messages about failures. These messages should be printed to stdout
++ and not stderr so that the output is properly ordered with respect to
++ the rest of the glibc testsuite run output.
++
++ Several preprocessors macros can be defined before including this
++ file.
++
++ The name of the do_test function can be changed with the
++ TEST_FUNCTION macro. It must expand to the desired function name.
++
++ If the test case needs access to command line parameters, it must
++ define the TEST_FUNCTION_ARGV macro with the name of the test
++ function. It must have the following type:
++
++ int TEST_FUNCTION_ARGV (int argc, char **argv);
++
++ This overrides the do_test default function and is incompatible
++ with the TEST_FUNCTION macro.
++
++ If PREPARE is defined, it must expand to the name of a function of
++ the type
++
++ void PREPARE (int argc, char **);
++
++ This function will be called early, after parsing the command line,
++ but before running the test, in the parent process which acts as
++ the test supervisor.
++
++ If CLEANUP_HANDLER is defined, it must expand to the name of a
++ function of the type
++
++ void CLEANUP_HANDLER (void);
++
++ This function will be called from the timeout (SIGALRM) signal
++ handler.
++
++ If EXPECTED_SIGNAL is defined, it must expanded to a constant which
++ denotes the expected signal number.
++
++ If EXPECTED_STATUS is defined, it must expand to the expected exit
++ status.
++
++ If TIMEOUT is defined, it must be positive constant. It overrides
++ the default test timeout and is measured in seconds.
++
++ If TEST_NO_MALLOPT is defined, the test wrapper will not call
++ mallopt.
++
++ Custom command line handling can be implemented by defining the
++ CMDLINE_OPTION macro (after including the <getopt.h> header; this
++ requires _GNU_SOURCE to be defined). This macro must expand to a
++ to a comma-separated list of braced initializers for struct option
++ from <getopt.h>, with a trailing comma. CMDLINE_PROCESS can be
++ defined as the name of a function which is called to process these
++ options. The function is passed the option character/number and
++ has this type:
++
++ void CMDLINE_PROCESS (int);
++*/
++
++#include <support/test-driver.h>
++
++#include <string.h>
++
++int
++main (int argc, char **argv)
++{
++ struct test_config test_config;
++ memset (&test_config, 0, sizeof (test_config));
++
++#ifdef PREPARE
++ test_config.prepare_function = (PREPARE);
++#endif
++
++#if defined (TEST_FUNCTION) && defined (TEST_FUNCTON_ARGV)
++# error TEST_FUNCTION and TEST_FUNCTION_ARGV cannot be defined at the same time
++#endif
++#if defined (TEST_FUNCTION)
++ test_config.test_function = TEST_FUNCTION;
++#elif defined (TEST_FUNCTION_ARGV)
++ test_config.test_function_argv = TEST_FUNCTION_ARGV;
++#else
++ test_config.test_function = do_test;
++#endif
++
++#ifdef CLEANUP_HANDLER
++ test_config.cleanup_function = CLEANUP_HANDLER;
++#endif
++
++#ifdef EXPECTED_SIGNAL
++ test_config.expected_signal = (EXPECTED_SIGNAL);
++#endif
++
++#ifdef EXPECTED_STATUS
++ test_config.expected_status = (EXPECTED_STATUS);
++#endif
++
++#ifdef TEST_NO_MALLOPT
++ test_config.no_mallopt = 1;
++#endif
++
++#ifdef TIMEOUT
++ test_config.timeout = TIMEOUT;
++#endif
++
++#ifdef CMDLINE_OPTIONS
++ struct option options[] =
++ {
++ CMDLINE_OPTIONS
++ TEST_DEFAULT_OPTIONS
++ };
++ test_config.options = &options;
++#endif
++#ifdef CMDLINE_PROCESS
++ test_config.cmdline_function = CMDLINE_PROCESS;
++#endif
++
++ return support_test_main (argc, argv, &test_config);
++}
+diff --git a/support/test-driver.h b/support/test-driver.h
+new file mode 100644
+index 0000000000..af1971a9ca
+--- /dev/null
++++ b/support/test-driver.h
+@@ -0,0 +1,74 @@
++/* Interfaces for the test driver.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_TEST_DRIVER_H
++#define SUPPORT_TEST_DRIVER_H
++
++#include <sys/cdefs.h>
++
++__BEGIN_DECLS
++
++struct test_config
++{
++ void (*prepare_function) (int argc, char **argv);
++ int (*test_function) (void);
++ int (*test_function_argv) (int argc, char **argv);
++ void (*cleanup_function) (void);
++ void (*cmdline_function) (int);
++ const void *options; /* Custom options if not NULL. */
++ int timeout; /* Test timeout in seconds. */
++ int expected_status; /* Expected exit status. */
++ int expected_signal; /* If non-zero, expect termination by signal. */
++ char no_mallopt; /* Boolean flag to disable mallopt. */
++};
++
++enum
++ {
++ /* Test exit status which indicates that the feature is
++ unsupported. */
++ EXIT_UNSUPPORTED = 77,
++
++ /* Default timeout is twenty seconds. Tests should normally
++ complete faster than this, but if they don't, that's abnormal
++ (a bug) anyways. */
++ DEFAULT_TIMEOUT = 20,
++
++ /* Used for command line argument parsing. */
++ OPT_DIRECT = 1000,
++ OPT_TESTDIR,
++ };
++
++/* Options provided by the test driver. */
++#define TEST_DEFAULT_OPTIONS \
++ { "verbose", no_argument, NULL, 'v' }, \
++ { "direct", no_argument, NULL, OPT_DIRECT }, \
++ { "test-dir", required_argument, NULL, OPT_TESTDIR }, \
++
++/* The directory the test should use for temporary files. */
++extern const char *test_dir;
++
++/* The number of --verbose arguments specified during program
++ invocation. This variable can be used to control the verbosity of
++ tests. */
++extern unsigned int test_verbose;
++
++int support_test_main (int argc, char **argv, const struct test_config *);
++
++__END_DECLS
++
++#endif /* SUPPORT_TEST_DRIVER_H */
+diff --git a/support/tst-support-namespace.c b/support/tst-support-namespace.c
+new file mode 100644
+index 0000000000..a50b074f5e
+--- /dev/null
++++ b/support/tst-support-namespace.c
+@@ -0,0 +1,34 @@
++/* Test entering namespaces.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <stdio.h>
++#include <support/namespace.h>
++
++static int
++do_test (void)
++{
++ if (support_become_root ())
++ printf ("info: acquired root-like privileges\n");
++ if (support_enter_network_namespace ())
++ printf ("info: entered network namespace\n");
++ if (support_in_uts_namespace ())
++ printf ("info: also entered UTS namespace\n");
++ return 0;
++}
++
++#include <support/test-driver.c>
+diff --git a/support/tst-support_capture_subprocess.c b/support/tst-support_capture_subprocess.c
+new file mode 100644
+index 0000000000..5672fba0f7
+--- /dev/null
++++ b/support/tst-support_capture_subprocess.c
+@@ -0,0 +1,188 @@
++/* Test capturing output from a subprocess.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <stdbool.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <string.h>
++#include <support/capture_subprocess.h>
++#include <support/check.h>
++#include <support/support.h>
++#include <sys/wait.h>
++#include <unistd.h>
++
++/* Write one byte at *P to FD and advance *P. Do nothing if *P is
++ '\0'. */
++static void
++transfer (const unsigned char **p, int fd)
++{
++ if (**p != '\0')
++ {
++ TEST_VERIFY (write (fd, *p, 1) == 1);
++ ++*p;
++ }
++}
++
++/* Determine the order in which stdout and stderr are written. */
++enum write_mode { out_first, err_first, interleave,
++ write_mode_last = interleave };
++
++/* Describe what to write in the subprocess. */
++struct test
++{
++ char *out;
++ char *err;
++ enum write_mode write_mode;
++ int signal;
++ int status;
++};
++
++/* For use with support_capture_subprocess. */
++static void
++callback (void *closure)
++{
++ const struct test *test = closure;
++ bool mode_ok = false;
++ switch (test->write_mode)
++ {
++ case out_first:
++ TEST_VERIFY (fputs (test->out, stdout) >= 0);
++ TEST_VERIFY (fflush (stdout) == 0);
++ TEST_VERIFY (fputs (test->err, stderr) >= 0);
++ TEST_VERIFY (fflush (stderr) == 0);
++ mode_ok = true;
++ break;
++ case err_first:
++ TEST_VERIFY (fputs (test->err, stderr) >= 0);
++ TEST_VERIFY (fflush (stderr) == 0);
++ TEST_VERIFY (fputs (test->out, stdout) >= 0);
++ TEST_VERIFY (fflush (stdout) == 0);
++ mode_ok = true;
++ break;
++ case interleave:
++ {
++ const unsigned char *pout = (const unsigned char *) test->out;
++ const unsigned char *perr = (const unsigned char *) test->err;
++ do
++ {
++ transfer (&pout, STDOUT_FILENO);
++ transfer (&perr, STDERR_FILENO);
++ }
++ while (*pout != '\0' || *perr != '\0');
++ }
++ mode_ok = true;
++ break;
++ }
++ TEST_VERIFY (mode_ok);
++
++ if (test->signal != 0)
++ raise (test->signal);
++ exit (test->status);
++}
++
++/* Create a heap-allocated random string of letters. */
++static char *
++random_string (size_t length)
++{
++ char *result = xmalloc (length + 1);
++ for (size_t i = 0; i < length; ++i)
++ result[i] = 'a' + (rand () % 26);
++ result[length] = '\0';
++ return result;
++}
++
++/* Check that the specific stream from the captured subprocess matches
++ expectations. */
++static void
++check_stream (const char *what, const struct xmemstream *stream,
++ const char *expected)
++{
++ if (strcmp (stream->buffer, expected) != 0)
++ {
++ support_record_failure ();
++ printf ("error: captured %s data incorrect\n"
++ " expected: %s\n"
++ " actual: %s\n",
++ what, expected, stream->buffer);
++ }
++ if (stream->length != strlen (expected))
++ {
++ support_record_failure ();
++ printf ("error: captured %s data length incorrect\n"
++ " expected: %zu\n"
++ " actual: %zu\n",
++ what, strlen (expected), stream->length);
++ }
++}
++
++static int
++do_test (void)
++{
++ const int lengths[] = {0, 1, 17, 512, 20000, -1};
++
++ /* Test multiple combinations of support_capture_subprocess.
++
++ length_idx_stdout: Index into the lengths array above,
++ controls how many bytes are written by the subprocess to
++ standard output.
++ length_idx_stderr: Same for standard error.
++ write_mode: How standard output and standard error writes are
++ ordered.
++ signal: Exit with no signal if zero, with SIGTERM if one.
++ status: Process exit status: 0 if zero, 3 if one. */
++ for (int length_idx_stdout = 0; lengths[length_idx_stdout] >= 0;
++ ++length_idx_stdout)
++ for (int length_idx_stderr = 0; lengths[length_idx_stderr] >= 0;
++ ++length_idx_stderr)
++ for (int write_mode = 0; write_mode < write_mode_last; ++write_mode)
++ for (int signal = 0; signal < 2; ++signal)
++ for (int status = 0; status < 2; ++status)
++ {
++ struct test test =
++ {
++ .out = random_string (lengths[length_idx_stdout]),
++ .err = random_string (lengths[length_idx_stderr]),
++ .write_mode = write_mode,
++ .signal = signal * SIGTERM, /* 0 or SIGTERM. */
++ .status = status * 3, /* 0 or 3. */
++ };
++ TEST_VERIFY (strlen (test.out) == lengths[length_idx_stdout]);
++ TEST_VERIFY (strlen (test.err) == lengths[length_idx_stderr]);
++
++ struct support_capture_subprocess result
++ = support_capture_subprocess (callback, &test);
++ check_stream ("stdout", &result.out, test.out);
++ check_stream ("stderr", &result.err, test.err);
++ if (test.signal != 0)
++ {
++ TEST_VERIFY (WIFSIGNALED (result.status));
++ TEST_VERIFY (WTERMSIG (result.status) == test.signal);
++ }
++ else
++ {
++ TEST_VERIFY (WIFEXITED (result.status));
++ TEST_VERIFY (WEXITSTATUS (result.status) == test.status);
++ }
++ support_capture_subprocess_free (&result);
++ free (test.out);
++ free (test.err);
++ }
++ return 0;
++}
++
++#include <support/test-driver.c>
+diff --git a/support/tst-support_format_dns_packet.c b/support/tst-support_format_dns_packet.c
+new file mode 100644
+index 0000000000..9c8589c09c
+--- /dev/null
++++ b/support/tst-support_format_dns_packet.c
+@@ -0,0 +1,101 @@
++/* Tests for the support_format_dns_packet function.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check.h>
++#include <support/format_nss.h>
++#include <support/run_diff.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <string.h>
++
++static void
++check_packet (const void *buffer, size_t length,
++ const char *name, const char *expected)
++{
++ char *actual = support_format_dns_packet (buffer, length);
++ if (strcmp (actual, expected) != 0)
++ {
++ support_record_failure ();
++ printf ("error: formatted packet does not match: %s\n", name);
++ support_run_diff ("expected", expected,
++ "actual", actual);
++ }
++ free (actual);
++}
++
++static void
++test_aaaa_length (void)
++{
++ static const char packet[] =
++ /* Header: Response with two records. */
++ "\x12\x34\x80\x00\x00\x01\x00\x02\x00\x00\x00\x00"
++ /* Question section. www.example/IN/AAAA. */
++ "\x03www\x07""example\x00\x00\x1c\x00\x01"
++ /* Answer section. www.example AAAA [corrupted]. */
++ "\xc0\x0c"
++ "\x00\x1c\x00\x01\x00\x00\x00\x00\x00\x10"
++ "\x20\x01\x0d\xb8\x05\x06\x07\x08"
++ "\x11\x12\x13\x14\x15\x16\x17\x18"
++ /* www.example AAAA [corrupted]. */
++ "\xc0\x0c"
++ "\x00\x1c\x00\x01\x00\x00\x00\x00\x00\x11"
++ "\x01\x02\x03\x04\x05\x06\x07\x08"
++ "\x11\x12\x13\x14\x15\x16\x17\x18" "\xff";
++ check_packet (packet, sizeof (packet) - 1, __func__,
++ "name: www.example\n"
++ "address: 2001:db8:506:708:1112:1314:1516:1718\n"
++ "error: AAAA record of size 17: www.example\n");
++}
++
++static void
++test_multiple_cnames (void)
++{
++ static const char packet[] =
++ /* Header: Response with three records. */
++ "\x12\x34\x80\x00\x00\x01\x00\x03\x00\x00\x00\x00"
++ /* Question section. www.example/IN/A. */
++ "\x03www\x07""example\x00\x00\x01\x00\x01"
++ /* Answer section. www.example CNAME www1.example. */
++ "\xc0\x0c"
++ "\x00\x05\x00\x01\x00\x00\x00\x00\x00\x07"
++ "\x04www1\xc0\x10"
++ /* www1 CNAME www2. */
++ "\x04www1\xc0\x10"
++ "\x00\x05\x00\x01\x00\x00\x00\x00\x00\x07"
++ "\x04www2\xc0\x10"
++ /* www2 A 192.0.2.1. */
++ "\x04www2\xc0\x10"
++ "\x00\x01\x00\x01\x00\x00\x00\x00\x00\x04"
++ "\xc0\x00\x02\x01";
++ check_packet (packet, sizeof (packet) - 1, __func__,
++ "name: www.example\n"
++ "name: www1.example\n"
++ "name: www2.example\n"
++ "address: 192.0.2.1\n");
++}
++
++static int
++do_test (void)
++{
++ test_aaaa_length ();
++ test_multiple_cnames ();
++ return 0;
++}
++
++#include <support/test-driver.c>
+diff --git a/support/tst-support_record_failure-2.sh b/support/tst-support_record_failure-2.sh
+new file mode 100644
+index 0000000000..2c9372cc29
+--- /dev/null
++++ b/support/tst-support_record_failure-2.sh
+@@ -0,0 +1,69 @@
++#!/bin/sh
++# Test failure recording (with and without --direct).
++# Copyright (C) 2016-2017 Free Software Foundation, Inc.
++# This file is part of the GNU C Library.
++
++# The GNU C Library is free software; you can redistribute it and/or
++# modify it under the terms of the GNU Lesser General Public
++# License as published by the Free Software Foundation; either
++# version 2.1 of the License, or (at your option) any later version.
++#
++# The GNU C Library is distributed in the hope that it will be useful,
++# but WITHOUT ANY WARRANTY; without even the implied warranty of
++# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++# Lesser General Public License for more details.
++#
++# You should have received a copy of the GNU Lesser General Public
++# License along with the GNU C Library; if not, see
++# <http://www.gnu.org/licenses/>. */
++
++set -e
++
++common_objpfx=$1; shift
++test_program_prefix_before_env=$1; shift
++run_program_env=$1; shift
++test_program_prefix_after_env=$1; shift
++
++run_test () {
++ expected_status="$1"
++ expected_output="$2"
++ shift 2
++ args="${common_objpfx}support/tst-support_record_failure $*"
++ echo "running: $args"
++ set +e
++ output="$(${test_program_prefix_before_env} \
++ ${run_program} ${test_program_prefix_after_env} $args)"
++ status=$?
++ set -e
++ echo " exit status: $status"
++ if test "$output" != "$expected_output" ; then
++ echo "error: unexpected output: $output"
++ exit 1
++ fi
++ if test "$status" -ne "$expected_status" ; then
++ echo "error: exit status $expected_status expected"
++ exit 1
++ fi
++}
++
++different_status () {
++ direct="$1"
++ run_test 1 "error: 1 test failures" $direct --status=0
++ run_test 1 "error: 1 test failures" $direct --status=1
++ run_test 2 "error: 1 test failures" $direct --status=2
++ run_test 1 "error: 1 test failures" $direct --status=77
++ run_test 2 "error: tst-support_record_failure.c:109: not true: false
++error: 1 test failures" $direct --test-verify
++ run_test 2 "error: tst-support_record_failure.c:109: not true: false
++info: execution passed failed TEST_VERIFY
++error: 1 test failures" $direct --test-verify --verbose
++}
++
++different_status
++different_status --direct
++
++run_test 1 "error: tst-support_record_failure.c:116: not true: false
++error: 1 test failures" --test-verify-exit
++# --direct does not print the summary error message if exit is called.
++run_test 1 "error: tst-support_record_failure.c:116: not true: false" \
++ --direct --test-verify-exit
+diff --git a/support/tst-support_record_failure.c b/support/tst-support_record_failure.c
+new file mode 100644
+index 0000000000..e739e739c3
+--- /dev/null
++++ b/support/tst-support_record_failure.c
+@@ -0,0 +1,153 @@
++/* Test support_record_failure state sharing.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check.h>
++#include <support/support.h>
++#include <support/test-driver.h>
++#include <support/xunistd.h>
++
++#include <getopt.h>
++#include <stdbool.h>
++#include <stdlib.h>
++#include <stdio.h>
++#include <string.h>
++
++static int exit_status_with_failure = -1;
++static bool test_verify;
++static bool test_verify_exit;
++enum
++ {
++ OPT_STATUS = 10001,
++ OPT_TEST_VERIFY,
++ OPT_TEST_VERIFY_EXIT,
++ };
++#define CMDLINE_OPTIONS \
++ { "status", required_argument, NULL, OPT_STATUS }, \
++ { "test-verify", no_argument, NULL, OPT_TEST_VERIFY }, \
++ { "test-verify-exit", no_argument, NULL, OPT_TEST_VERIFY_EXIT },
++static void
++cmdline_process (int c)
++{
++ switch (c)
++ {
++ case OPT_STATUS:
++ exit_status_with_failure = atoi (optarg);
++ break;
++ case OPT_TEST_VERIFY:
++ test_verify = true;
++ break;
++ case OPT_TEST_VERIFY_EXIT:
++ test_verify_exit = true;
++ break;
++ }
++}
++#define CMDLINE_PROCESS cmdline_process
++
++static void
++check_failure_reporting (int phase, int zero, int unsupported)
++{
++ int status = support_report_failure (0);
++ if (status != zero)
++ {
++ printf ("real-error (phase %d): support_report_failure (0) == %d\n",
++ phase, status);
++ exit (1);
++ }
++ status = support_report_failure (1);
++ if (status != 1)
++ {
++ printf ("real-error (phase %d): support_report_failure (1) == %d\n",
++ phase, status);
++ exit (1);
++ }
++ status = support_report_failure (2);
++ if (status != 2)
++ {
++ printf ("real-error (phase %d): support_report_failure (2) == %d\n",
++ phase, status);
++ exit (1);
++ }
++ status = support_report_failure (EXIT_UNSUPPORTED);
++ if (status != unsupported)
++ {
++ printf ("real-error (phase %d): "
++ "support_report_failure (EXIT_UNSUPPORTED) == %d\n",
++ phase, status);
++ exit (1);
++ }
++}
++
++static int
++do_test (void)
++{
++ if (exit_status_with_failure >= 0)
++ {
++ /* External invocation with requested error status. Used by
++ tst-support_report_failure-2.sh. */
++ support_record_failure ();
++ return exit_status_with_failure;
++ }
++ TEST_VERIFY (true);
++ TEST_VERIFY_EXIT (true);
++ if (test_verify)
++ {
++ TEST_VERIFY (false);
++ if (test_verbose)
++ printf ("info: execution passed failed TEST_VERIFY\n");
++ return 2; /* Expected exit status. */
++ }
++ if (test_verify_exit)
++ {
++ TEST_VERIFY_EXIT (false);
++ return 3; /* Not reached. Expected exit status is 1. */
++ }
++
++ printf ("info: This test tests the test framework.\n"
++ "info: It reports some expected errors on stdout.\n");
++
++ /* Check that the status is passed through unchanged. */
++ check_failure_reporting (1, 0, EXIT_UNSUPPORTED);
++
++ /* Check state propagation from a subprocess. */
++ pid_t pid = xfork ();
++ if (pid == 0)
++ {
++ support_record_failure ();
++ _exit (0);
++ }
++ int status;
++ xwaitpid (pid, &status, 0);
++ if (status != 0)
++ {
++ printf ("real-error: incorrect status from subprocess: %d\n", status);
++ return 1;
++ }
++ check_failure_reporting (2, 1, 1);
++
++ /* Also test directly in the parent process. */
++ support_record_failure_reset ();
++ check_failure_reporting (3, 0, EXIT_UNSUPPORTED);
++ support_record_failure ();
++ check_failure_reporting (4, 1, 1);
++
++ /* We need to mask the failure above. */
++ support_record_failure_reset ();
++ return 0;
++}
++
++#include <support/test-driver.c>
+diff --git a/sysdeps/unix/sysv/linux/sh/pwrite64.c b/support/write_message.c
+similarity index 68%
+rename from sysdeps/unix/sysv/linux/sh/pwrite64.c
+rename to support/write_message.c
+index 683a5d9886..f03ed931d6 100644
+--- a/sysdeps/unix/sysv/linux/sh/pwrite64.c
++++ b/support/write_message.c
+@@ -1,6 +1,6 @@
+-/* Copyright (C) 1997-2016 Free Software Foundation, Inc.
++/* Write a message to standard output.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+- Contributed by Ralf Baechle <ralf@gnu.org>, 1998.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+@@ -16,8 +16,14 @@
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+-/* SH4 ABI does not really require argument alignment for 64-bits, but
+- the kernel interface for pread adds a dummy long argument before the
+- offset. */
+-#define __ALIGNMENT_ARG
+-#include <sysdeps/unix/sysv/linux/pwrite64.c>
++#include <support/support.h>
++
++#include <string.h>
++#include <unistd.h>
++
++void
++write_message (const char *message)
++{
++ ssize_t unused __attribute__ ((unused));
++ unused = write (STDOUT_FILENO, message, strlen (message));
++}
+diff --git a/support/xaccept.c b/support/xaccept.c
+new file mode 100644
+index 0000000000..7b25af3b05
+--- /dev/null
++++ b/support/xaccept.c
+@@ -0,0 +1,32 @@
++/* accept with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xsocket.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++int
++xaccept (int fd, struct sockaddr *sa, socklen_t *salen)
++{
++ int clientfd = accept (fd, sa, salen);
++ if (clientfd < 0)
++ FAIL_EXIT1 ("accept (%d): %m", fd);
++ return clientfd;
++}
+diff --git a/support/xaccept4.c b/support/xaccept4.c
+new file mode 100644
+index 0000000000..67dd95e9fb
+--- /dev/null
++++ b/support/xaccept4.c
+@@ -0,0 +1,32 @@
++/* accept4 with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xsocket.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++int
++xaccept4 (int fd, struct sockaddr *sa, socklen_t *salen, int flags)
++{
++ int clientfd = accept4 (fd, sa, salen, flags);
++ if (clientfd < 0)
++ FAIL_EXIT1 ("accept4 (%d, 0x%x): %m", fd, flags);
++ return clientfd;
++}
+diff --git a/support/xasprintf.c b/support/xasprintf.c
+new file mode 100644
+index 0000000000..5157680fa2
+--- /dev/null
++++ b/support/xasprintf.c
+@@ -0,0 +1,36 @@
++/* Error-checking wrapper for asprintf.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/support.h>
++
++#include <stdarg.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++char *
++xasprintf (const char *format, ...)
++{
++ va_list ap;
++ va_start (ap, format);
++ char *result;
++ if (vasprintf (&result, format, ap) < 0)
++ FAIL_EXIT1 ("asprintf: %m");
++ va_end (ap);
++ return result;
++}
+diff --git a/support/xbind.c b/support/xbind.c
+new file mode 100644
+index 0000000000..cfc6dd8fa8
+--- /dev/null
++++ b/support/xbind.c
+@@ -0,0 +1,30 @@
++/* bind with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xsocket.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++void
++xbind (int fd, const struct sockaddr *sa, socklen_t sa_len)
++{
++ if (bind (fd, sa, sa_len) != 0)
++ FAIL_EXIT1 ("bind (%d), family %d: %m", fd, sa->sa_family);
++}
+diff --git a/sysdeps/unix/sysv/linux/sh/pread.c b/support/xcalloc.c
+similarity index 68%
+rename from sysdeps/unix/sysv/linux/sh/pread.c
+rename to support/xcalloc.c
+index d3f99f35db..135f42dab2 100644
+--- a/sysdeps/unix/sysv/linux/sh/pread.c
++++ b/support/xcalloc.c
+@@ -1,6 +1,6 @@
+-/* Copyright (C) 1997-2016 Free Software Foundation, Inc.
++/* Error-checking wrapper for calloc.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+@@ -16,8 +16,19 @@
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+-/* SH4 ABI does not really require argument alignment for 64-bits, but
+- the kernel interface for pread adds a dummy long argument before the
+- offset. */
+-#define __ALIGNMENT_ARG
+-#include <sysdeps/unix/sysv/linux/pread.c>
++#include <support/support.h>
++
++#include <stdarg.h>
++#include <stdio.h>
++#include <stdlib.h>
++
++void *
++xcalloc (size_t n, size_t s)
++{
++ void *p;
++
++ p = calloc (n, s);
++ if (p == NULL)
++ oom_error ("calloc", n * s);
++ return p;
++}
+diff --git a/sysdeps/unix/sysv/linux/sh/pread64.c b/support/xchroot.c
+similarity index 67%
+rename from sysdeps/unix/sysv/linux/sh/pread64.c
+rename to support/xchroot.c
+index b2e8a25788..abcc299e00 100644
+--- a/sysdeps/unix/sysv/linux/sh/pread64.c
++++ b/support/xchroot.c
+@@ -1,6 +1,6 @@
+-/* Copyright (C) 1997-2016 Free Software Foundation, Inc.
++/* chroot with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+@@ -16,8 +16,13 @@
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+-/* SH4 ABI does not really require argument alignment for 64-bits, but
+- the kernel interface for pread adds a dummy long argument before the
+- offset. */
+-#define __ALIGNMENT_ARG
+-#include <sysdeps/unix/sysv/linux/pread64.c>
++#include <support/check.h>
++#include <support/xunistd.h>
++#include <sys/stat.h>
++
++void
++xchroot (const char *path)
++{
++ if (chroot (path) != 0)
++ FAIL_EXIT1 ("chroot (\"%s\"): %m", path);
++}
+diff --git a/support/xclose.c b/support/xclose.c
+new file mode 100644
+index 0000000000..c931e08421
+--- /dev/null
++++ b/support/xclose.c
+@@ -0,0 +1,28 @@
++/* close with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xunistd.h>
++#include <support/check.h>
++#include <errno.h>
++
++void
++xclose (int fd)
++{
++ if (close (fd) < 0 && errno != EINTR)
++ FAIL_EXIT1 ("close of descriptor %d failed: %m", fd);
++}
+diff --git a/support/xconnect.c b/support/xconnect.c
+new file mode 100644
+index 0000000000..0266dbc643
+--- /dev/null
++++ b/support/xconnect.c
+@@ -0,0 +1,30 @@
++/* connect with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xsocket.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++void
++xconnect (int fd, const struct sockaddr *sa, socklen_t sa_len)
++{
++ if (connect (fd, sa, sa_len) != 0)
++ FAIL_EXIT1 ("connect (%d), family %d: %m", fd, sa->sa_family);
++}
+diff --git a/support/xdup2.c b/support/xdup2.c
+new file mode 100644
+index 0000000000..dc08c94518
+--- /dev/null
++++ b/support/xdup2.c
+@@ -0,0 +1,28 @@
++/* dup2 with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xunistd.h>
++
++#include <support/check.h>
++
++void
++xdup2 (int from, int to)
++{
++ if (dup2 (from, to) < 0)
++ FAIL_EXIT1 ("dup2 (%d, %d): %m", from, to);
++}
+diff --git a/support/xfclose.c b/support/xfclose.c
+new file mode 100644
+index 0000000000..2737f05044
+--- /dev/null
++++ b/support/xfclose.c
+@@ -0,0 +1,33 @@
++/* fclose with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xstdio.h>
++
++#include <support/check.h>
++#include <stdlib.h>
++
++void
++xfclose (FILE *fp)
++{
++ if (ferror (fp))
++ FAIL_EXIT1 ("stdio stream closed with pending errors");
++ if (fflush (fp) != 0)
++ FAIL_EXIT1 ("fflush: %m");
++ if (fclose (fp) != 0)
++ FAIL_EXIT1 ("fclose: %m");
++}
+diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdimf-vis3.S b/support/xfopen.c
+similarity index 67%
+rename from sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdimf-vis3.S
+rename to support/xfopen.c
+index 081fc15b62..14532a09f3 100644
+--- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdimf-vis3.S
++++ b/support/xfopen.c
+@@ -1,7 +1,6 @@
+-/* Compute positive difference, sparc 32-bit+v9+vis3.
+- Copyright (C) 2013-2016 Free Software Foundation, Inc.
++/* fopen with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+- Contributed by David S. Miller <davem@davemloft.net>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+@@ -17,16 +16,16 @@
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+-#include <sysdep.h>
++#include <support/xstdio.h>
+
+-ENTRY(__fdimf_vis3)
+- movwtos %o0, %f0
+- movwtos %o1, %f1
+- fcmps %f0, %f1
+- fbug 1f
+- nop
+- fzeros %f0
+- fnegs %f0, %f1
+-1: retl
+- fsubs %f0, %f1, %f0
+-END(__fdimf_vis3)
++#include <support/check.h>
++#include <stdlib.h>
++
++FILE *
++xfopen (const char *path, const char *mode)
++{
++ FILE *fp = fopen (path, mode);
++ if (fp == NULL)
++ FAIL_EXIT1 ("could not open %s (mode \"%s\"): %m", path, mode);
++ return fp;
++}
+diff --git a/support/xfork.c b/support/xfork.c
+new file mode 100644
+index 0000000000..aa52ba62c5
+--- /dev/null
++++ b/support/xfork.c
+@@ -0,0 +1,32 @@
++/* fork with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xunistd.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++pid_t
++xfork (void)
++{
++ pid_t result = fork ();
++ if (result < 0)
++ FAIL_EXIT1 ("fork: %m");
++ return result;
++}
+diff --git a/support/xgetsockname.c b/support/xgetsockname.c
+new file mode 100644
+index 0000000000..c3bd884f8d
+--- /dev/null
++++ b/support/xgetsockname.c
+@@ -0,0 +1,30 @@
++/* getsockname with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xsocket.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++void
++xgetsockname (int fd, struct sockaddr *sa, socklen_t *plen)
++{
++ if (getsockname (fd, sa, plen) != 0)
++ FAIL_EXIT1 ("setsockopt (%d): %m", fd);
++}
+diff --git a/support/xlisten.c b/support/xlisten.c
+new file mode 100644
+index 0000000000..1953e5900a
+--- /dev/null
++++ b/support/xlisten.c
+@@ -0,0 +1,30 @@
++/* listen with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xsocket.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++void
++xlisten (int fd, int backlog)
++{
++ if (listen (fd, backlog) != 0)
++ FAIL_EXIT1 ("listen (%d, %d): %m", fd, backlog);
++}
+diff --git a/support/xmalloc.c b/support/xmalloc.c
+new file mode 100644
+index 0000000000..450f699789
+--- /dev/null
++++ b/support/xmalloc.c
+@@ -0,0 +1,34 @@
++/* Error-checking wrapper for malloc.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/support.h>
++
++#include <stdarg.h>
++#include <stdio.h>
++#include <stdlib.h>
++
++void *
++xmalloc (size_t n)
++{
++ void *p;
++
++ p = malloc (n);
++ if (p == NULL)
++ oom_error ("malloc", n);
++ return p;
++}
+diff --git a/sysdeps/sparc/sparc32/fpu/s_fdim.S b/support/xmemstream.c
+similarity index 54%
+rename from sysdeps/sparc/sparc32/fpu/s_fdim.S
+rename to support/xmemstream.c
+index e93970faae..bce6dc9170 100644
+--- a/sysdeps/sparc/sparc32/fpu/s_fdim.S
++++ b/support/xmemstream.c
+@@ -1,7 +1,6 @@
+-/* Compute positive difference, sparc 32-bit.
+- Copyright (C) 2013-2016 Free Software Foundation, Inc.
++/* Error-checking wrappers for memstream functions.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+- Contributed by David S. Miller <davem@davemloft.net>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+@@ -17,26 +16,27 @@
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+-#include <sysdep.h>
+-#include <math_ldbl_opt.h>
++#include <support/xmemstream.h>
+
+-ENTRY(__fdim)
+- std %o0, [%sp + 72]
+- std %o2, [%sp + 80]
+- ldd [%sp + 72], %f0
+- ldd [%sp + 80], %f2
+- fcmpd %f0, %f2
+- st %g0, [%sp + 72]
+- fbug 1f
+- st %g0, [%sp + 76]
+- ldd [%sp + 72], %f0
+- fnegs %f0, %f2
+- fmovs %f1, %f3
+-1: retl
+- fsubd %f0, %f2, %f0
+-END(__fdim)
+-weak_alias (__fdim, fdim)
++#include <errno.h>
++#include <stdlib.h>
++#include <support/check.h>
++#include <support/xstdio.h>
+
+-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
+-compat_symbol (libm, __fdim, fdiml, GLIBC_2_1);
+-#endif
++void
++xopen_memstream (struct xmemstream *stream)
++{
++ int old_errno = errno;
++ *stream = (struct xmemstream) {};
++ stream->out = open_memstream (&stream->buffer, &stream->length);
++ if (stream->out == NULL)
++ FAIL_EXIT1 ("open_memstream: %m");
++ errno = old_errno;
++}
++
++void
++xfclose_memstream (struct xmemstream *stream)
++{
++ xfclose (stream->out);
++ stream->out = NULL;
++}
+diff --git a/support/xmemstream.h b/support/xmemstream.h
+new file mode 100644
+index 0000000000..e5ba231e4d
+--- /dev/null
++++ b/support/xmemstream.h
+@@ -0,0 +1,49 @@
++/* Error-checking wrappers for memstream functions.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_XMEMSTREAM_H
++#define SUPPORT_XMEMSTREAM_H
++
++#include <stdio.h>
++#include <sys/cdefs.h>
++
++__BEGIN_DECLS
++
++/* Wrappers for other libc functions. */
++struct xmemstream
++{
++ FILE *out;
++ char *buffer;
++ size_t length;
++};
++
++/* Create a new in-memory stream. Initializes *STREAM. After this
++ function returns, STREAM->out is a file descriptor open for
++ writing. errno is preserved, so that the %m format specifier can
++ be used for writing to STREAM->out. */
++void xopen_memstream (struct xmemstream *stream);
++
++/* Closes STREAM->OUT. After this function returns, STREAM->buffer
++ and STREAM->length denote a memory range which contains the bytes
++ written to the output stream. The caller should free
++ STREAM->buffer. */
++void xfclose_memstream (struct xmemstream *stream);
++
++__END_DECLS
++
++#endif /* SUPPORT_XMEMSTREAM_H */
+diff --git a/support/xmkdir.c b/support/xmkdir.c
+new file mode 100644
+index 0000000000..ea17d49391
+--- /dev/null
++++ b/support/xmkdir.c
+@@ -0,0 +1,28 @@
++/* mkdir with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check.h>
++#include <support/xunistd.h>
++#include <sys/stat.h>
++
++void
++xmkdir (const char *path, mode_t mode)
++{
++ if (mkdir (path, mode) != 0)
++ FAIL_EXIT1 ("mkdir (\"%s\", 0%o): %m", path, mode);
++}
+diff --git a/support/xmmap.c b/support/xmmap.c
+new file mode 100644
+index 0000000000..435b1eb733
+--- /dev/null
++++ b/support/xmmap.c
+@@ -0,0 +1,31 @@
++/* mmap with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check.h>
++#include <support/xunistd.h>
++#include <sys/mman.h>
++
++void *
++xmmap (void *addr, size_t length, int prot, int flags, int fd)
++{
++ void *result = mmap (addr, length, prot, flags, fd, 0);
++ if (result == MAP_FAILED)
++ FAIL_EXIT1 ("mmap of %zu bytes, prot=0x%x, flags=0x%x: %m",
++ length, prot, flags);
++ return result;
++}
+diff --git a/support/xmunmap.c b/support/xmunmap.c
+new file mode 100644
+index 0000000000..6ef5a4a468
+--- /dev/null
++++ b/support/xmunmap.c
+@@ -0,0 +1,28 @@
++/* munmap with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check.h>
++#include <support/xunistd.h>
++#include <sys/mman.h>
++
++void
++xmunmap (void *addr, size_t length)
++{
++ if (munmap (addr, length) != 0)
++ FAIL_EXIT1 ("munmap of %zu bytes: %m", length);
++}
+diff --git a/support/xopen.c b/support/xopen.c
+new file mode 100644
+index 0000000000..7f033a03a7
+--- /dev/null
++++ b/support/xopen.c
+@@ -0,0 +1,30 @@
++/* open64 with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/check.h>
++#include <support/xunistd.h>
++#include <fcntl.h>
++
++int
++xopen (const char *path, int flags, mode_t mode)
++{
++ int ret = open64 (path, flags, mode);
++ if (ret < 0)
++ FAIL_EXIT1 ("open64 (\"%s\", 0x%x, 0%o): %m", path, flags, mode);
++ return ret;
++}
+diff --git a/support/xpipe.c b/support/xpipe.c
+new file mode 100644
+index 0000000000..89a64a55c1
+--- /dev/null
++++ b/support/xpipe.c
+@@ -0,0 +1,28 @@
++/* pipe with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xunistd.h>
++
++#include <support/check.h>
++
++void
++xpipe (int fds[2])
++{
++ if (pipe (fds) < 0)
++ FAIL_EXIT1 ("pipe: %m");
++}
+diff --git a/support/xpoll.c b/support/xpoll.c
+new file mode 100644
+index 0000000000..bec2521ffc
+--- /dev/null
++++ b/support/xpoll.c
+@@ -0,0 +1,32 @@
++/* poll with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xsocket.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++int
++xpoll (struct pollfd *fds, nfds_t nfds, int timeout)
++{
++ int ret = poll (fds, nfds, timeout);
++ if (ret < 0)
++ FAIL_EXIT1 ("poll: %m");
++ return ret;
++}
+diff --git a/support/xpthread_attr_destroy.c b/support/xpthread_attr_destroy.c
+new file mode 100644
+index 0000000000..664c809e9f
+--- /dev/null
++++ b/support/xpthread_attr_destroy.c
+@@ -0,0 +1,26 @@
++/* pthread_attr_destroy with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_attr_destroy (pthread_attr_t *attr)
++{
++ xpthread_check_return ("pthread_attr_destroy",
++ pthread_attr_destroy (attr));
++}
+diff --git a/support/xpthread_attr_init.c b/support/xpthread_attr_init.c
+new file mode 100644
+index 0000000000..2e30ade9ab
+--- /dev/null
++++ b/support/xpthread_attr_init.c
+@@ -0,0 +1,25 @@
++/* pthread_attr_init with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_attr_init (pthread_attr_t *attr)
++{
++ xpthread_check_return ("pthread_attr_init", pthread_attr_init (attr));
++}
+diff --git a/support/xpthread_attr_setdetachstate.c b/support/xpthread_attr_setdetachstate.c
+new file mode 100644
+index 0000000000..b544dbaa42
+--- /dev/null
++++ b/support/xpthread_attr_setdetachstate.c
+@@ -0,0 +1,27 @@
++/* pthread_attr_setdetachstate with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_attr_setdetachstate (pthread_attr_t *attr, int detachstate)
++{
++ xpthread_check_return ("pthread_attr_setdetachstate",
++ pthread_attr_setdetachstate (attr,
++ detachstate));
++}
+diff --git a/support/xpthread_attr_setstacksize.c b/support/xpthread_attr_setstacksize.c
+new file mode 100644
+index 0000000000..02d06310a9
+--- /dev/null
++++ b/support/xpthread_attr_setstacksize.c
+@@ -0,0 +1,26 @@
++/* pthread_attr_setstacksize with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_attr_setstacksize (pthread_attr_t *attr, size_t stacksize)
++{
++ xpthread_check_return ("pthread_attr_setstacksize",
++ pthread_attr_setstacksize (attr, stacksize));
++}
+diff --git a/support/xpthread_barrier_destroy.c b/support/xpthread_barrier_destroy.c
+new file mode 100644
+index 0000000000..efc0719a63
+--- /dev/null
++++ b/support/xpthread_barrier_destroy.c
+@@ -0,0 +1,26 @@
++/* pthread_barrier_destroy with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_barrier_destroy (pthread_barrier_t *barrier)
++{
++ xpthread_check_return ("pthread_barrier_destroy",
++ pthread_barrier_destroy (barrier));
++}
+diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim-vis3.S b/support/xpthread_barrier_init.c
+similarity index 65%
+rename from sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim-vis3.S
+rename to support/xpthread_barrier_init.c
+index 4a479b1a59..b32dad1315 100644
+--- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim-vis3.S
++++ b/support/xpthread_barrier_init.c
+@@ -1,7 +1,6 @@
+-/* Compute positive difference, sparc 32-bit+v9+vis3.
+- Copyright (C) 2013-2016 Free Software Foundation, Inc.
++/* pthread_barrier_init with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+- Contributed by David S. Miller <davem@davemloft.net>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+@@ -17,18 +16,12 @@
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+-#include <sysdep.h>
++#include <support/xthread.h>
+
+-ENTRY(__fdim_vis3)
+- movwtos %o0, %f0
+- movwtos %o1, %f1
+- movwtos %o2, %f2
+- movwtos %o3, %f3
+- fcmpd %f0, %f2
+- fbug 1f
+- nop
+- fzero %f0
+- fnegd %f0, %f2
+-1: retl
+- fsubd %f0, %f2, %f0
+-END(__fdim_vis3)
++void
++xpthread_barrier_init (pthread_barrier_t *barrier,
++ pthread_barrierattr_t *attr, unsigned int count)
++{
++ xpthread_check_return ("pthread_barrier_init",
++ pthread_barrier_init (barrier, attr, count));
++}
+diff --git a/support/xpthread_barrier_wait.c b/support/xpthread_barrier_wait.c
+new file mode 100644
+index 0000000000..7cee44d0a3
+--- /dev/null
++++ b/support/xpthread_barrier_wait.c
+@@ -0,0 +1,28 @@
++/* pthread_barrier_wait with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++int
++xpthread_barrier_wait (pthread_barrier_t *barrier)
++{
++ int ret = pthread_barrier_wait (barrier);
++ if (ret != 0 && ret != PTHREAD_BARRIER_SERIAL_THREAD)
++ xpthread_check_return ("pthread_barrier_wait", ret);
++ return ret == PTHREAD_BARRIER_SERIAL_THREAD;
++}
+diff --git a/support/xpthread_cancel.c b/support/xpthread_cancel.c
+new file mode 100644
+index 0000000000..3af16f9b54
+--- /dev/null
++++ b/support/xpthread_cancel.c
+@@ -0,0 +1,25 @@
++/* pthread_cancel with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_cancel (pthread_t thr)
++{
++ xpthread_check_return ("pthread_cancel", pthread_cancel (thr));
++}
+diff --git a/support/xpthread_check_return.c b/support/xpthread_check_return.c
+new file mode 100644
+index 0000000000..3094d82e9c
+--- /dev/null
++++ b/support/xpthread_check_return.c
+@@ -0,0 +1,34 @@
++/* Return value checking for pthread functions, exit variant.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++#include <errno.h>
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++void
++xpthread_check_return (const char *function, int value)
++{
++ if (value != 0)
++ {
++ errno = value;
++ FAIL_EXIT1 ("%s: %m", function);
++ }
++}
+diff --git a/support/xpthread_cond_wait.c b/support/xpthread_cond_wait.c
+new file mode 100644
+index 0000000000..b0e9b2a232
+--- /dev/null
++++ b/support/xpthread_cond_wait.c
+@@ -0,0 +1,26 @@
++/* pthread_cond_wait with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex)
++{
++ xpthread_check_return
++ ("pthread_cond_wait", pthread_cond_wait (cond, mutex));
++}
+diff --git a/support/xpthread_create.c b/support/xpthread_create.c
+new file mode 100644
+index 0000000000..98c63e54c3
+--- /dev/null
++++ b/support/xpthread_create.c
+@@ -0,0 +1,29 @@
++/* pthread_create with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++pthread_t
++xpthread_create (pthread_attr_t *attr,
++ void *(*thread_func) (void *), void *closure)
++{
++ pthread_t thr;
++ xpthread_check_return
++ ("pthread_create", pthread_create (&thr, attr, thread_func, closure));
++ return thr;
++}
+diff --git a/support/xpthread_detach.c b/support/xpthread_detach.c
+new file mode 100644
+index 0000000000..2088af2f57
+--- /dev/null
++++ b/support/xpthread_detach.c
+@@ -0,0 +1,25 @@
++/* pthread_detach with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_detach (pthread_t thr)
++{
++ xpthread_check_return ("pthread_detach", pthread_detach (thr));
++}
+diff --git a/support/xpthread_join.c b/support/xpthread_join.c
+new file mode 100644
+index 0000000000..f23bb9a5ae
+--- /dev/null
++++ b/support/xpthread_join.c
+@@ -0,0 +1,27 @@
++/* pthread_join with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void *
++xpthread_join (pthread_t thr)
++{
++ void *result;
++ xpthread_check_return ("pthread_join", pthread_join (thr, &result));
++ return result;
++}
+diff --git a/support/xpthread_mutex_consistent.c b/support/xpthread_mutex_consistent.c
+new file mode 100644
+index 0000000000..52364be365
+--- /dev/null
++++ b/support/xpthread_mutex_consistent.c
+@@ -0,0 +1,26 @@
++/* pthread_mutex_consistent with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_mutex_consistent (pthread_mutex_t *mutex)
++{
++ xpthread_check_return ("pthread_mutex_consistent",
++ pthread_mutex_consistent (mutex));
++}
+diff --git a/support/xpthread_mutex_destroy.c b/support/xpthread_mutex_destroy.c
+new file mode 100644
+index 0000000000..f11f8f0acd
+--- /dev/null
++++ b/support/xpthread_mutex_destroy.c
+@@ -0,0 +1,26 @@
++/* pthread_mutex_destroy with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_mutex_destroy (pthread_mutex_t *mutex)
++{
++ xpthread_check_return ("pthread_mutex_destroy",
++ pthread_mutex_destroy (mutex));
++}
+diff --git a/support/xpthread_mutex_init.c b/support/xpthread_mutex_init.c
+new file mode 100644
+index 0000000000..2d16d1b9d9
+--- /dev/null
++++ b/support/xpthread_mutex_init.c
+@@ -0,0 +1,26 @@
++/* pthread_mutex_init with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_mutex_init (pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)
++{
++ xpthread_check_return ("pthread_mutex_init",
++ pthread_mutex_init (mutex, attr));
++}
+diff --git a/support/xpthread_mutex_lock.c b/support/xpthread_mutex_lock.c
+new file mode 100644
+index 0000000000..af727b45f3
+--- /dev/null
++++ b/support/xpthread_mutex_lock.c
+@@ -0,0 +1,25 @@
++/* pthread_mutex_lock with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_mutex_lock (pthread_mutex_t *mutex)
++{
++ xpthread_check_return ("pthread_mutex_lock", pthread_mutex_lock (mutex));
++}
+diff --git a/support/xpthread_mutex_unlock.c b/support/xpthread_mutex_unlock.c
+new file mode 100644
+index 0000000000..161b41edf6
+--- /dev/null
++++ b/support/xpthread_mutex_unlock.c
+@@ -0,0 +1,25 @@
++/* pthread_mutex_unlock with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_mutex_unlock (pthread_mutex_t *mutex)
++{
++ xpthread_check_return ("pthread_mutex_unlock", pthread_mutex_unlock (mutex));
++}
+diff --git a/support/xpthread_mutexattr_destroy.c b/support/xpthread_mutexattr_destroy.c
+new file mode 100644
+index 0000000000..c699e32b41
+--- /dev/null
++++ b/support/xpthread_mutexattr_destroy.c
+@@ -0,0 +1,26 @@
++/* pthread_mutexattr_destroy with error checking.
++ Copyright (C) 2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_mutexattr_destroy (pthread_mutexattr_t *attr)
++{
++ xpthread_check_return ("pthread_mutexattr_destroy",
++ pthread_mutexattr_destroy (attr));
++}
+diff --git a/support/xpthread_mutexattr_init.c b/support/xpthread_mutexattr_init.c
+new file mode 100644
+index 0000000000..fa93fab178
+--- /dev/null
++++ b/support/xpthread_mutexattr_init.c
+@@ -0,0 +1,25 @@
++/* pthread_mutexattr_init with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_mutexattr_init (pthread_mutexattr_t *attr)
++{
++ xpthread_check_return ("pthread_mutexattr_init", pthread_mutexattr_init (attr));
++}
+diff --git a/sysdeps/sparc/sparc64/fpu/s_fdim.S b/support/xpthread_mutexattr_setprotocol.c
+similarity index 67%
+rename from sysdeps/sparc/sparc64/fpu/s_fdim.S
+rename to support/xpthread_mutexattr_setprotocol.c
+index 7fae72a251..353f75e3d7 100644
+--- a/sysdeps/sparc/sparc64/fpu/s_fdim.S
++++ b/support/xpthread_mutexattr_setprotocol.c
+@@ -1,7 +1,6 @@
+-/* Compute positive difference, sparc 64-bit.
+- Copyright (C) 2013-2016 Free Software Foundation, Inc.
++/* pthread_mutexattr_setprotocol with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+- Contributed by David S. Miller <davem@davemloft.net>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+@@ -17,16 +16,11 @@
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+-#include <sysdep.h>
+-#include <math_ldbl_opt.h>
++#include <support/xthread.h>
+
+-ENTRY(__fdim)
+- fcmpd %f0, %f2
+- fbug 1f
+- nop
+- fzero %f0
+- fnegd %f0, %f2
+-1: retl
+- fsubd %f0, %f2, %f0
+-END(__fdim)
+-weak_alias (__fdim, fdim)
++void
++xpthread_mutexattr_setprotocol (pthread_mutexattr_t *attr, int flag)
++{
++ xpthread_check_return ("pthread_mutexattr_setprotocol",
++ pthread_mutexattr_setprotocol (attr, flag));
++}
+diff --git a/support/xpthread_mutexattr_setpshared.c b/support/xpthread_mutexattr_setpshared.c
+new file mode 100644
+index 0000000000..242da1aeca
+--- /dev/null
++++ b/support/xpthread_mutexattr_setpshared.c
+@@ -0,0 +1,26 @@
++/* pthread_mutexattr_setpshared with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_mutexattr_setpshared (pthread_mutexattr_t *attr, int flag)
++{
++ xpthread_check_return ("pthread_mutexattr_setpshared",
++ pthread_mutexattr_setpshared (attr, flag));
++}
+diff --git a/support/xpthread_mutexattr_setrobust.c b/support/xpthread_mutexattr_setrobust.c
+new file mode 100644
+index 0000000000..d7d6fa8630
+--- /dev/null
++++ b/support/xpthread_mutexattr_setrobust.c
+@@ -0,0 +1,26 @@
++/* pthread_mutexattr_setrobust with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_mutexattr_setrobust (pthread_mutexattr_t *attr, int flag)
++{
++ xpthread_check_return ("pthread_mutexattr_setrobust",
++ pthread_mutexattr_setrobust (attr, flag));
++}
+diff --git a/support/xpthread_mutexattr_settype.c b/support/xpthread_mutexattr_settype.c
+new file mode 100644
+index 0000000000..cf22170b56
+--- /dev/null
++++ b/support/xpthread_mutexattr_settype.c
+@@ -0,0 +1,26 @@
++/* pthread_mutexattr_settype with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_mutexattr_settype (pthread_mutexattr_t *attr, int flag)
++{
++ xpthread_check_return ("pthread_mutexattr_settype",
++ pthread_mutexattr_settype (attr, flag));
++}
+diff --git a/support/xpthread_once.c b/support/xpthread_once.c
+new file mode 100644
+index 0000000000..70d58dbab2
+--- /dev/null
++++ b/support/xpthread_once.c
+@@ -0,0 +1,25 @@
++/* pthread_once with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_once (pthread_once_t *guard, void (*func) (void))
++{
++ xpthread_check_return ("pthread_once", pthread_once (guard, func));
++}
+diff --git a/support/xpthread_sigmask.c b/support/xpthread_sigmask.c
+new file mode 100644
+index 0000000000..0ba9ca02dc
+--- /dev/null
++++ b/support/xpthread_sigmask.c
+@@ -0,0 +1,34 @@
++/* pthread_sigmask with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xsignal.h>
++#include <support/support.h>
++
++#include <unistd.h>
++
++void
++xpthread_sigmask (int how, const sigset_t *set, sigset_t *oldset)
++{
++ if (pthread_sigmask (how, set, oldset) != 0)
++ {
++ write_message ("error: pthread_setmask failed\n");
++ /* Do not use exit because pthread_sigmask can be called from a
++ signal handler. */
++ _exit (1);
++ }
++}
+diff --git a/support/xpthread_spin_lock.c b/support/xpthread_spin_lock.c
+new file mode 100644
+index 0000000000..6975215b17
+--- /dev/null
++++ b/support/xpthread_spin_lock.c
+@@ -0,0 +1,25 @@
++/* pthread_spin_lock with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_spin_lock (pthread_spinlock_t *lock)
++{
++ xpthread_check_return ("pthread_spin_lock", pthread_spin_lock (lock));
++}
+diff --git a/support/xpthread_spin_unlock.c b/support/xpthread_spin_unlock.c
+new file mode 100644
+index 0000000000..4f19a44c48
+--- /dev/null
++++ b/support/xpthread_spin_unlock.c
+@@ -0,0 +1,25 @@
++/* pthread_spin_unlock with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xthread.h>
++
++void
++xpthread_spin_unlock (pthread_spinlock_t *lock)
++{
++ xpthread_check_return ("pthread_spin_unlock", pthread_spin_unlock (lock));
++}
+diff --git a/support/xrealloc.c b/support/xrealloc.c
+new file mode 100644
+index 0000000000..00c313880c
+--- /dev/null
++++ b/support/xrealloc.c
+@@ -0,0 +1,32 @@
++/* Error-checking wrapper for realloc.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/support.h>
++
++#include <stdarg.h>
++#include <stdio.h>
++#include <stdlib.h>
++
++void *
++xrealloc (void *p, size_t n)
++{
++ void *result = realloc (p, n);
++ if (result == NULL && (n > 0 || p == NULL))
++ oom_error ("realloc", n);
++ return result;
++}
+diff --git a/support/xrecvfrom.c b/support/xrecvfrom.c
+new file mode 100644
+index 0000000000..17809c4dd2
+--- /dev/null
++++ b/support/xrecvfrom.c
+@@ -0,0 +1,33 @@
++/* recvfrom with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xsocket.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++size_t
++xrecvfrom (int fd, void *buf, size_t buflen, int flags,
++ struct sockaddr *sa, socklen_t *salen)
++{
++ ssize_t ret = recvfrom (fd, buf, buflen, flags, sa, salen);
++ if (ret < 0)
++ FAIL_EXIT1 ("error: recvfrom (%d), %zu bytes buffer: %m", fd, buflen);
++ return ret;
++}
+diff --git a/support/xsendto.c b/support/xsendto.c
+new file mode 100644
+index 0000000000..20bddf6965
+--- /dev/null
++++ b/support/xsendto.c
+@@ -0,0 +1,35 @@
++/* sendto with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xsocket.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++void
++xsendto (int fd, const void *buf, size_t buflen, int flags,
++ const struct sockaddr *sa, socklen_t salen)
++{
++ ssize_t ret = sendto (fd, buf, buflen, flags, sa, salen);
++ if (ret < 0)
++ FAIL_EXIT1 ("sendto (%d), %zu bytes, family %d: %m",
++ fd, buflen, sa->sa_family);
++ if (ret != buflen)
++ FAIL_EXIT1 ("sendto (%d) sent %zd bytes instead of %zu", fd, ret, buflen);
++}
+diff --git a/sysdeps/sparc/sparc32/fpu/s_fdimf.S b/support/xsetsockopt.c
+similarity index 62%
+rename from sysdeps/sparc/sparc32/fpu/s_fdimf.S
+rename to support/xsetsockopt.c
+index c3fe8afa98..9931882e75 100644
+--- a/sysdeps/sparc/sparc32/fpu/s_fdimf.S
++++ b/support/xsetsockopt.c
+@@ -1,7 +1,6 @@
+-/* Compute positive difference, sparc 32-bit.
+- Copyright (C) 2013-2016 Free Software Foundation, Inc.
++/* setsockopt with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+- Contributed by David S. Miller <davem@davemloft.net>.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+@@ -17,19 +16,16 @@
+ License along with the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+-#include <sysdep.h>
++#include <support/xsocket.h>
+
+-ENTRY(__fdimf)
+- st %o0, [%sp + 72]
+- st %o1, [%sp + 76]
+- ld [%sp + 72], %f0
+- ld [%sp + 76], %f1
+- fcmps %f0, %f1
+- fbug 1f
+- st %g0, [%sp + 72]
+- ld [%sp + 72], %f0
+- fnegs %f0, %f1
+-1: retl
+- fsubs %f0, %f1, %f0
+-END(__fdimf)
+-weak_alias (__fdimf, fdimf)
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++void
++xsetsockopt (int fd, int level, int name, const void *val, socklen_t vallen)
++{
++ if (setsockopt (fd, level, name, val, vallen) != 0)
++ FAIL_EXIT1 ("setsockopt (%d, %d, %d), %zu bytes: %m",
++ fd, level, name, (size_t) vallen);
++}
+diff --git a/support/xsignal.h b/support/xsignal.h
+new file mode 100644
+index 0000000000..3dc0d9d5ce
+--- /dev/null
++++ b/support/xsignal.h
+@@ -0,0 +1,34 @@
++/* Support functionality for using signals.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_SIGNAL_H
++#define SUPPORT_SIGNAL_H
++
++#include <signal.h>
++#include <sys/cdefs.h>
++
++__BEGIN_DECLS
++
++/* The following functions call the corresponding libpthread functions
++ and terminate the process on error. */
++
++void xpthread_sigmask (int how, const sigset_t *set, sigset_t *oldset);
++
++__END_DECLS
++
++#endif /* SUPPORT_SIGNAL_H */
+diff --git a/support/xsocket.c b/support/xsocket.c
+new file mode 100644
+index 0000000000..c1deaee924
+--- /dev/null
++++ b/support/xsocket.c
+@@ -0,0 +1,32 @@
++/* socket with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xsocket.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++
++int
++xsocket (int domain, int type, int protocol)
++{
++ int fd = socket (domain, type, protocol);
++ if (fd < 0)
++ FAIL_EXIT1 ("socket (%d, %d, %d): %m\n", domain, type, protocol);
++ return fd;
++}
+diff --git a/support/xsocket.h b/support/xsocket.h
+new file mode 100644
+index 0000000000..d6724948d8
+--- /dev/null
++++ b/support/xsocket.h
+@@ -0,0 +1,39 @@
++/* Error-checking wrappers for socket functions.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_XSOCKET_H
++#define SUPPORT_XSOCKET_H
++
++#include <poll.h>
++#include <sys/socket.h>
++#include <sys/types.h>
++
++int xsocket (int, int, int);
++void xsetsockopt (int, int, int, const void *, socklen_t);
++void xgetsockname (int, struct sockaddr *, socklen_t *);
++void xconnect (int, const struct sockaddr *, socklen_t);
++void xbind (int, const struct sockaddr *, socklen_t);
++void xlisten (int, int);
++int xaccept (int, struct sockaddr *, socklen_t *);
++int xaccept4 (int, struct sockaddr *, socklen_t *, int);
++void xsendto (int, const void *, size_t, int,
++ const struct sockaddr *, socklen_t);
++size_t xrecvfrom (int, void *, size_t, int, struct sockaddr *, socklen_t *);
++int xpoll (struct pollfd *, nfds_t, int);
++
++#endif /* SUPPORT_XSOCKET_H */
+diff --git a/support/xstdio.h b/support/xstdio.h
+new file mode 100644
+index 0000000000..bcc2e863bf
+--- /dev/null
++++ b/support/xstdio.h
+@@ -0,0 +1,32 @@
++/* Error-checking wrappers for stdio functions.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_XSTDIO_H
++#define SUPPORT_XSTDIO_H
++
++#include <stdio.h>
++#include <sys/cdefs.h>
++
++__BEGIN_DECLS
++
++FILE *xfopen (const char *path, const char *mode);
++void xfclose (FILE *);
++
++__END_DECLS
++
++#endif /* SUPPORT_XSTDIO_H */
+diff --git a/support/xstrdup.c b/support/xstrdup.c
+new file mode 100644
+index 0000000000..d6a8c04baf
+--- /dev/null
++++ b/support/xstrdup.c
+@@ -0,0 +1,30 @@
++/* strdup with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/support.h>
++
++#include <string.h>
++
++char *
++xstrdup (const char *s)
++{
++ char *p = strdup (s);
++ if (p == NULL)
++ oom_error ("strdup", strlen (s));
++ return p;
++}
+diff --git a/support/xthread.h b/support/xthread.h
+new file mode 100644
+index 0000000000..6dd7e709be
+--- /dev/null
++++ b/support/xthread.h
+@@ -0,0 +1,77 @@
++/* Support functionality for using threads.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#ifndef SUPPORT_THREAD_H
++#define SUPPORT_THREAD_H
++
++#include <pthread.h>
++#include <sys/cdefs.h>
++
++__BEGIN_DECLS
++
++/* Terminate the process (with exit status 0) after SECONDS have
++ elapsed, from a helper thread. The process is terminated with the
++ exit function, so atexit handlers are executed. */
++void delayed_exit (int seconds);
++
++/* Terminate the process (with exit status 1) if VALUE is not zero.
++ In that case, print a failure message to standard output mentioning
++ FUNCTION. The process is terminated with the exit function, so
++ atexit handlers are executed. */
++void xpthread_check_return (const char *function, int value);
++
++/* The following functions call the corresponding libpthread functions
++ and terminate the process on error. */
++
++void xpthread_barrier_init (pthread_barrier_t *barrier,
++ pthread_barrierattr_t *attr, unsigned int count);
++void xpthread_barrier_destroy (pthread_barrier_t *barrier);
++void xpthread_mutexattr_destroy (pthread_mutexattr_t *);
++void xpthread_mutexattr_init (pthread_mutexattr_t *);
++void xpthread_mutexattr_setprotocol (pthread_mutexattr_t *, int);
++void xpthread_mutexattr_setpshared (pthread_mutexattr_t *, int);
++void xpthread_mutexattr_setrobust (pthread_mutexattr_t *, int);
++void xpthread_mutexattr_settype (pthread_mutexattr_t *, int);
++void xpthread_mutex_init (pthread_mutex_t *, const pthread_mutexattr_t *);
++void xpthread_mutex_destroy (pthread_mutex_t *);
++void xpthread_mutex_lock (pthread_mutex_t *mutex);
++void xpthread_mutex_unlock (pthread_mutex_t *mutex);
++void xpthread_mutex_consistent (pthread_mutex_t *);
++void xpthread_spin_lock (pthread_spinlock_t *lock);
++void xpthread_spin_unlock (pthread_spinlock_t *lock);
++void xpthread_cond_wait (pthread_cond_t * cond, pthread_mutex_t * mutex);
++pthread_t xpthread_create (pthread_attr_t *attr,
++ void *(*thread_func) (void *), void *closure);
++void xpthread_detach (pthread_t thr);
++void xpthread_cancel (pthread_t thr);
++void *xpthread_join (pthread_t thr);
++void xpthread_once (pthread_once_t *guard, void (*func) (void));
++void xpthread_attr_destroy (pthread_attr_t *attr);
++void xpthread_attr_init (pthread_attr_t *attr);
++void xpthread_attr_setdetachstate (pthread_attr_t *attr,
++ int detachstate);
++void xpthread_attr_setstacksize (pthread_attr_t *attr,
++ size_t stacksize);
++
++/* This function returns non-zero if pthread_barrier_wait returned
++ PTHREAD_BARRIER_SERIAL_THREAD. */
++int xpthread_barrier_wait (pthread_barrier_t *barrier);
++
++__END_DECLS
++
++#endif /* SUPPORT_THREAD_H */
+diff --git a/support/xunistd.h b/support/xunistd.h
+new file mode 100644
+index 0000000000..151d743e1f
+--- /dev/null
++++ b/support/xunistd.h
+@@ -0,0 +1,56 @@
++/* POSIX-specific extra functions.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++/* These wrapper functions use POSIX types and therefore cannot be
++ declared in <support/support.h>. */
++
++#ifndef SUPPORT_XUNISTD_H
++#define SUPPORT_XUNISTD_H
++
++#include <sys/cdefs.h>
++#include <sys/types.h>
++#include <unistd.h>
++
++__BEGIN_DECLS
++
++struct stat64;
++
++pid_t xfork (void);
++pid_t xwaitpid (pid_t, int *status, int flags);
++void xpipe (int[2]);
++void xdup2 (int, int);
++int xopen (const char *path, int flags, mode_t);
++void xstat (const char *path, struct stat64 *);
++void xmkdir (const char *path, mode_t);
++void xchroot (const char *path);
++
++/* Close the file descriptor. Ignore EINTR errors, but terminate the
++ process on other errors. */
++void xclose (int);
++
++/* Write the buffer. Retry on short writes. */
++void xwrite (int, const void *, size_t);
++
++/* Invoke mmap with a zero file offset. */
++void *xmmap (void *addr, size_t length, int prot, int flags, int fd);
++
++void xmunmap (void *addr, size_t length);
++
++__END_DECLS
++
++#endif /* SUPPORT_XUNISTD_H */
+diff --git a/support/xwaitpid.c b/support/xwaitpid.c
+new file mode 100644
+index 0000000000..204795e4c0
+--- /dev/null
++++ b/support/xwaitpid.c
+@@ -0,0 +1,33 @@
++/* waitpid with error checking.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xunistd.h>
++
++#include <stdio.h>
++#include <stdlib.h>
++#include <support/check.h>
++#include <sys/wait.h>
++
++int
++xwaitpid (int pid, int *status, int flags)
++{
++ pid_t result = waitpid (pid, status, flags);
++ if (result < 0)
++ FAIL_EXIT1 ("waitpid: %m\n");
++ return result;
++}
+diff --git a/support/xwrite.c b/support/xwrite.c
+new file mode 100644
+index 0000000000..134e8ee4c1
+--- /dev/null
++++ b/support/xwrite.c
+@@ -0,0 +1,39 @@
++/* write with error checking and retries.
++ Copyright (C) 2016-2017 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <support/xunistd.h>
++
++#include <support/check.h>
++
++void
++xwrite (int fd, const void *buffer, size_t length)
++{
++ const char *p = buffer;
++ const char *end = p + length;
++ while (p < end)
++ {
++ ssize_t ret = write (fd, p, end - p);
++ if (ret < 0)
++ FAIL_EXIT1 ("write of %zu bytes failed after %td: %m",
++ length, p - (const char *) buffer);
++ if (ret == 0)
++ FAIL_EXIT1 ("write return 0 after writing %td bytes of %zu",
++ p - (const char *) buffer, length);
++ p += ret;
++ }
++}
+diff --git a/sysdeps/aarch64/nptl/tcb-offsets.sym b/sysdeps/aarch64/nptl/tcb-offsets.sym
+index 0677aeabff..238647dd47 100644
+--- a/sysdeps/aarch64/nptl/tcb-offsets.sym
++++ b/sysdeps/aarch64/nptl/tcb-offsets.sym
+@@ -2,6 +2,5 @@
+ #include <tls.h>
+
+ PTHREAD_MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads)
+-PTHREAD_PID_OFFSET offsetof (struct pthread, pid)
+ PTHREAD_TID_OFFSET offsetof (struct pthread, tid)
+ PTHREAD_SIZEOF sizeof (struct pthread)
+diff --git a/sysdeps/alpha/fpu/s_ceil.c b/sysdeps/alpha/fpu/s_ceil.c
+index c1ff864d4b..e9c350af1c 100644
+--- a/sysdeps/alpha/fpu/s_ceil.c
++++ b/sysdeps/alpha/fpu/s_ceil.c
+@@ -26,17 +26,16 @@
+ double
+ __ceil (double x)
+ {
++ if (isnan (x))
++ return x + x;
++
+ if (isless (fabs (x), 9007199254740992.0)) /* 1 << DBL_MANT_DIG */
+ {
+ double tmp1, new_x;
+
+ new_x = -x;
+ __asm (
+-#ifdef _IEEE_FP_INEXACT
+- "cvttq/svim %2,%1\n\t"
+-#else
+ "cvttq/svm %2,%1\n\t"
+-#endif
+ "cvtqt/m %1,%0\n\t"
+ : "=f"(new_x), "=&f"(tmp1)
+ : "f"(new_x));
+diff --git a/sysdeps/alpha/fpu/s_ceilf.c b/sysdeps/alpha/fpu/s_ceilf.c
+index 7e63a6fe94..77e01a99f7 100644
+--- a/sysdeps/alpha/fpu/s_ceilf.c
++++ b/sysdeps/alpha/fpu/s_ceilf.c
+@@ -25,6 +25,9 @@
+ float
+ __ceilf (float x)
+ {
++ if (isnanf (x))
++ return x + x;
++
+ if (isless (fabsf (x), 16777216.0f)) /* 1 << FLT_MANT_DIG */
+ {
+ /* Note that Alpha S_Floating is stored in registers in a
+@@ -36,11 +39,7 @@ __ceilf (float x)
+
+ new_x = -x;
+ __asm ("cvtst/s %3,%2\n\t"
+-#ifdef _IEEE_FP_INEXACT
+- "cvttq/svim %2,%1\n\t"
+-#else
+ "cvttq/svm %2,%1\n\t"
+-#endif
+ "cvtqt/m %1,%0\n\t"
+ : "=f"(new_x), "=&f"(tmp1), "=&f"(tmp2)
+ : "f"(new_x));
+diff --git a/sysdeps/alpha/fpu/s_floor.c b/sysdeps/alpha/fpu/s_floor.c
+index 1a6f8c4617..9930f6be42 100644
+--- a/sysdeps/alpha/fpu/s_floor.c
++++ b/sysdeps/alpha/fpu/s_floor.c
+@@ -27,16 +27,15 @@
+ double
+ __floor (double x)
+ {
++ if (isnan (x))
++ return x + x;
++
+ if (isless (fabs (x), 9007199254740992.0)) /* 1 << DBL_MANT_DIG */
+ {
+ double tmp1, new_x;
+
+ __asm (
+-#ifdef _IEEE_FP_INEXACT
+- "cvttq/svim %2,%1\n\t"
+-#else
+ "cvttq/svm %2,%1\n\t"
+-#endif
+ "cvtqt/m %1,%0\n\t"
+ : "=f"(new_x), "=&f"(tmp1)
+ : "f"(x));
+diff --git a/sysdeps/alpha/fpu/s_floorf.c b/sysdeps/alpha/fpu/s_floorf.c
+index 8cd80e2b42..015c04f40d 100644
+--- a/sysdeps/alpha/fpu/s_floorf.c
++++ b/sysdeps/alpha/fpu/s_floorf.c
+@@ -26,6 +26,9 @@
+ float
+ __floorf (float x)
+ {
++ if (isnanf (x))
++ return x + x;
++
+ if (isless (fabsf (x), 16777216.0f)) /* 1 << FLT_MANT_DIG */
+ {
+ /* Note that Alpha S_Floating is stored in registers in a
+@@ -36,11 +39,7 @@ __floorf (float x)
+ float tmp1, tmp2, new_x;
+
+ __asm ("cvtst/s %3,%2\n\t"
+-#ifdef _IEEE_FP_INEXACT
+- "cvttq/svim %2,%1\n\t"
+-#else
+ "cvttq/svm %2,%1\n\t"
+-#endif
+ "cvtqt/m %1,%0\n\t"
+ : "=f"(new_x), "=&f"(tmp1), "=&f"(tmp2)
+ : "f"(x));
+diff --git a/sysdeps/alpha/fpu/s_rint.c b/sysdeps/alpha/fpu/s_rint.c
+index f33fe72c11..259348afc0 100644
+--- a/sysdeps/alpha/fpu/s_rint.c
++++ b/sysdeps/alpha/fpu/s_rint.c
+@@ -23,6 +23,9 @@
+ double
+ __rint (double x)
+ {
++ if (isnan (x))
++ return x + x;
++
+ if (isless (fabs (x), 9007199254740992.0)) /* 1 << DBL_MANT_DIG */
+ {
+ double tmp1, new_x;
+diff --git a/sysdeps/alpha/fpu/s_rintf.c b/sysdeps/alpha/fpu/s_rintf.c
+index 1400dfe8d7..645728ad5b 100644
+--- a/sysdeps/alpha/fpu/s_rintf.c
++++ b/sysdeps/alpha/fpu/s_rintf.c
+@@ -22,6 +22,9 @@
+ float
+ __rintf (float x)
+ {
++ if (isnanf (x))
++ return x + x;
++
+ if (isless (fabsf (x), 16777216.0f)) /* 1 << FLT_MANT_DIG */
+ {
+ /* Note that Alpha S_Floating is stored in registers in a
+diff --git a/sysdeps/alpha/fpu/s_trunc.c b/sysdeps/alpha/fpu/s_trunc.c
+index 16cb114a72..4b986a6926 100644
+--- a/sysdeps/alpha/fpu/s_trunc.c
++++ b/sysdeps/alpha/fpu/s_trunc.c
+@@ -28,12 +28,11 @@ __trunc (double x)
+ double two52 = copysign (0x1.0p52, x);
+ double r, tmp;
+
++ if (isgreaterequal (fabs (x), 0x1.0p52))
++ return x;
++
+ __asm (
+-#ifdef _IEEE_FP_INEXACT
+- "addt/suic %2, %3, %1\n\tsubt/suic %1, %3, %0"
+-#else
+ "addt/suc %2, %3, %1\n\tsubt/suc %1, %3, %0"
+-#endif
+ : "=&f"(r), "=&f"(tmp)
+ : "f"(x), "f"(two52));
+
+diff --git a/sysdeps/alpha/fpu/s_truncf.c b/sysdeps/alpha/fpu/s_truncf.c
+index 2290f28295..3e93356166 100644
+--- a/sysdeps/alpha/fpu/s_truncf.c
++++ b/sysdeps/alpha/fpu/s_truncf.c
+@@ -27,12 +27,11 @@ __truncf (float x)
+ float two23 = copysignf (0x1.0p23, x);
+ float r, tmp;
+
++ if (isgreaterequal (fabsf (x), 0x1.0p23))
++ return x;
++
+ __asm (
+-#ifdef _IEEE_FP_INEXACT
+- "adds/suic %2, %3, %1\n\tsubs/suic %1, %3, %0"
+-#else
+ "adds/suc %2, %3, %1\n\tsubs/suc %1, %3, %0"
+-#endif
+ : "=&f"(r), "=&f"(tmp)
+ : "f"(x), "f"(two23));
+
+diff --git a/sysdeps/alpha/nptl/tcb-offsets.sym b/sysdeps/alpha/nptl/tcb-offsets.sym
+index c21a791040..1005621b37 100644
+--- a/sysdeps/alpha/nptl/tcb-offsets.sym
++++ b/sysdeps/alpha/nptl/tcb-offsets.sym
+@@ -10,5 +10,4 @@
+ #define thread_offsetof(mem) (long)(offsetof(struct pthread, mem) - sizeof(struct pthread))
+
+ MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
+-PID_OFFSET thread_offsetof (pid)
+ TID_OFFSET thread_offsetof (tid)
+diff --git a/sysdeps/arm/nacl/libc.abilist b/sysdeps/arm/nacl/libc.abilist
+index 2f7751d167..dfa7198306 100644
+--- a/sysdeps/arm/nacl/libc.abilist
++++ b/sysdeps/arm/nacl/libc.abilist
+@@ -1840,4 +1840,5 @@ GLIBC_2.23 fts64_close F
+ GLIBC_2.23 fts64_open F
+ GLIBC_2.23 fts64_read F
+ GLIBC_2.23 fts64_set F
++GLIBC_2.24 GLIBC_2.24 A
+ GLIBC_2.24 quick_exit F
+diff --git a/sysdeps/arm/nptl/tcb-offsets.sym b/sysdeps/arm/nptl/tcb-offsets.sym
+index 92cc441d3d..bf9c0a1c17 100644
+--- a/sysdeps/arm/nptl/tcb-offsets.sym
++++ b/sysdeps/arm/nptl/tcb-offsets.sym
+@@ -7,5 +7,4 @@
+ #define thread_offsetof(mem) (long)(offsetof(struct pthread, mem) - sizeof(struct pthread))
+
+ MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
+-PID_OFFSET thread_offsetof (pid)
+ TID_OFFSET thread_offsetof (tid)
+diff --git a/sysdeps/generic/unsecvars.h b/sysdeps/generic/unsecvars.h
+index d5b8119c9c..ac57bd5db0 100644
+--- a/sysdeps/generic/unsecvars.h
++++ b/sysdeps/generic/unsecvars.h
+@@ -4,11 +4,13 @@
+ #define UNSECURE_ENVVARS \
+ "GCONV_PATH\0" \
+ "GETCONF_DIR\0" \
++ "GLIBC_TUNABLES\0" \
+ "HOSTALIASES\0" \
+ "LD_AUDIT\0" \
+ "LD_DEBUG\0" \
+ "LD_DEBUG_OUTPUT\0" \
+ "LD_DYNAMIC_WEAK\0" \
++ "LD_HWCAP_MASK\0" \
+ "LD_LIBRARY_PATH\0" \
+ "LD_ORIGIN_PATH\0" \
+ "LD_PRELOAD\0" \
+diff --git a/sysdeps/hppa/dl-machine.h b/sysdeps/hppa/dl-machine.h
+index 9404211819..01bd5bf197 100644
+--- a/sysdeps/hppa/dl-machine.h
++++ b/sysdeps/hppa/dl-machine.h
+@@ -302,6 +302,10 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
+ #define ARCH_LA_PLTENTER hppa_gnu_pltenter
+ #define ARCH_LA_PLTEXIT hppa_gnu_pltexit
+
++/* Adjust DL_STACK_END to get value we want in __libc_stack_end. */
++#define DL_STACK_END(cookie) \
++ ((void *) (((long) (cookie)) + 0x160))
++
+ /* Initial entry point code for the dynamic linker.
+ The C function `_dl_start' is the real entry point;
+ its return value is the user program's entry point. */
+@@ -401,11 +405,6 @@ asm ( \
+ /* Save the entry point in %r3. */ \
+ " copy %ret0,%r3\n" \
+ \
+- /* Remember the lowest stack address. */ \
+-" addil LT'__libc_stack_end,%r19\n" \
+-" ldw RT'__libc_stack_end(%r1),%r20\n" \
+-" stw %sp,0(%r20)\n" \
+- \
+ /* See if we were called as a command with the executable file \
+ name as an extra leading argument. */ \
+ " addil LT'_dl_skip_args,%r19\n" \
+diff --git a/sysdeps/hppa/nptl/tcb-offsets.sym b/sysdeps/hppa/nptl/tcb-offsets.sym
+index c2f326ee3d..6e852f35b1 100644
+--- a/sysdeps/hppa/nptl/tcb-offsets.sym
++++ b/sysdeps/hppa/nptl/tcb-offsets.sym
+@@ -3,7 +3,6 @@
+
+ RESULT offsetof (struct pthread, result)
+ TID offsetof (struct pthread, tid)
+-PID offsetof (struct pthread, pid)
+ CANCELHANDLING offsetof (struct pthread, cancelhandling)
+ CLEANUP_JMP_BUF offsetof (struct pthread, cleanup_jmp_buf)
+ MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads)
+@@ -14,6 +13,5 @@ MUTEX_FUTEX offsetof (pthread_mutex_t, __data.__lock)
+ -- This way we get the offset of a member in the struct pthread that
+ -- preceeds the thread pointer (which points to the dtv).
+ #define thread_offsetof(mem) (unsigned int)(offsetof(struct pthread, mem) - sizeof(struct pthread))
+-PID_THREAD_OFFSET thread_offsetof (pid)
+ TID_THREAD_OFFSET thread_offsetof (tid)
+ MULTIPLE_THREADS_THREAD_OFFSET thread_offsetof (header.multiple_threads)
+diff --git a/sysdeps/i386/i686/multiarch/strcspn-c.c b/sysdeps/i386/i686/multiarch/strcspn-c.c
+index 6d61e190a8..ec230fb383 100644
+--- a/sysdeps/i386/i686/multiarch/strcspn-c.c
++++ b/sysdeps/i386/i686/multiarch/strcspn-c.c
+@@ -1,2 +1,4 @@
+-#define __strcspn_sse2 __strcspn_ia32
+-#include <sysdeps/x86_64/multiarch/strcspn-c.c>
++#if IS_IN (libc)
++# define __strcspn_sse2 __strcspn_ia32
++# include <sysdeps/x86_64/multiarch/strcspn-c.c>
++#endif
+diff --git a/sysdeps/i386/i686/multiarch/varshift.c b/sysdeps/i386/i686/multiarch/varshift.c
+index 7760b966e2..6742a35d41 100644
+--- a/sysdeps/i386/i686/multiarch/varshift.c
++++ b/sysdeps/i386/i686/multiarch/varshift.c
+@@ -1 +1,3 @@
+-#include <sysdeps/x86_64/multiarch/varshift.c>
++#if IS_IN (libc)
++# include <sysdeps/x86_64/multiarch/varshift.c>
++#endif
+diff --git a/sysdeps/i386/nptl/tcb-offsets.sym b/sysdeps/i386/nptl/tcb-offsets.sym
+index 7bdf161b29..695a810386 100644
+--- a/sysdeps/i386/nptl/tcb-offsets.sym
++++ b/sysdeps/i386/nptl/tcb-offsets.sym
+@@ -4,7 +4,6 @@
+
+ RESULT offsetof (struct pthread, result)
+ TID offsetof (struct pthread, tid)
+-PID offsetof (struct pthread, pid)
+ CANCELHANDLING offsetof (struct pthread, cancelhandling)
+ CLEANUP_JMP_BUF offsetof (struct pthread, cleanup_jmp_buf)
+ MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads)
+diff --git a/sysdeps/ia64/nptl/Makefile b/sysdeps/ia64/nptl/Makefile
+index 48f1327446..1e6be8eea8 100644
+--- a/sysdeps/ia64/nptl/Makefile
++++ b/sysdeps/ia64/nptl/Makefile
+@@ -21,4 +21,5 @@ endif
+
+ ifeq ($(subdir),nptl)
+ libpthread-routines += ptw-sysdep ptw-sigblock ptw-sigprocmask
++libpthread-shared-only-routines += ptw-sysdep ptw-sigblock ptw-sigprocmask
+ endif
+diff --git a/sysdeps/ia64/nptl/tcb-offsets.sym b/sysdeps/ia64/nptl/tcb-offsets.sym
+index e1707ab1c8..b01f712be2 100644
+--- a/sysdeps/ia64/nptl/tcb-offsets.sym
++++ b/sysdeps/ia64/nptl/tcb-offsets.sym
+@@ -1,7 +1,6 @@
+ #include <sysdep.h>
+ #include <tls.h>
+
+-PID offsetof (struct pthread, pid) - TLS_PRE_TCB_SIZE
+ TID offsetof (struct pthread, tid) - TLS_PRE_TCB_SIZE
+ MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads) - TLS_PRE_TCB_SIZE
+ SYSINFO_OFFSET offsetof (tcbhead_t, __private)
+diff --git a/sysdeps/m68k/m680x0/m68020/atomic-machine.h b/sysdeps/m68k/m680x0/m68020/atomic-machine.h
+index 24bc5c5ef7..65965cca9e 100644
+--- a/sysdeps/m68k/m680x0/m68020/atomic-machine.h
++++ b/sysdeps/m68k/m680x0/m68020/atomic-machine.h
+@@ -73,7 +73,7 @@ typedef uintmax_t uatomic_max_t;
+ __typeof (mem) __memp = (mem); \
+ __asm __volatile ("cas2%.l %0:%R0,%1:%R1,(%2):(%3)" \
+ : "=d" (__ret) \
+- : "d" (newval), "r" (__memp), \
++ : "d" ((__typeof (*(mem))) (newval)), "r" (__memp), \
+ "r" ((char *) __memp + 4), "0" (oldval) \
+ : "memory"); \
+ __ret; })
+@@ -101,8 +101,9 @@ typedef uintmax_t uatomic_max_t;
+ __asm __volatile ("1: cas2%.l %0:%R0,%1:%R1,(%2):(%3);" \
+ " jbne 1b" \
+ : "=d" (__result) \
+- : "d" (newvalue), "r" (__memp), \
+- "r" ((char *) __memp + 4), "0" (__result) \
++ : "d" ((__typeof (*(mem))) (newvalue)), \
++ "r" (__memp), "r" ((char *) __memp + 4), \
++ "0" (__result) \
+ : "memory"); \
+ } \
+ __result; })
+@@ -144,7 +145,7 @@ typedef uintmax_t uatomic_max_t;
+ " cas2%.l %0:%R0,%1:%R1,(%3):(%4);" \
+ " jbne 1b" \
+ : "=d" (__result), "=&d" (__temp) \
+- : "d" (value), "r" (__memp), \
++ : "d" ((__typeof (*(mem))) (value)), "r" (__memp), \
+ "r" ((char *) __memp + 4), "0" (__result) \
+ : "memory"); \
+ } \
+@@ -175,8 +176,9 @@ typedef uintmax_t uatomic_max_t;
+ " cas2%.l %0:%R0,%1:%R1,(%3):(%4);" \
+ " jbne 1b" \
+ : "=d" (__oldval), "=&d" (__temp) \
+- : "d" (value), "r" (__memp), \
+- "r" ((char *) __memp + 4), "0" (__oldval) \
++ : "d" ((__typeof (*(mem))) (value)), \
++ "r" (__memp), "r" ((char *) __memp + 4), \
++ "0" (__oldval) \
+ : "memory"); \
+ } \
+ })
+diff --git a/sysdeps/m68k/nptl/tcb-offsets.sym b/sysdeps/m68k/nptl/tcb-offsets.sym
+index b1bba65868..241fb8b47c 100644
+--- a/sysdeps/m68k/nptl/tcb-offsets.sym
++++ b/sysdeps/m68k/nptl/tcb-offsets.sym
+@@ -7,5 +7,4 @@
+ #define thread_offsetof(mem) (long)(offsetof(struct pthread, mem) - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)
+
+ MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
+-PID_OFFSET thread_offsetof (pid)
+ TID_OFFSET thread_offsetof (tid)
+diff --git a/sysdeps/microblaze/nptl/tcb-offsets.sym b/sysdeps/microblaze/nptl/tcb-offsets.sym
+index 18afbee291..614f0dfed6 100644
+--- a/sysdeps/microblaze/nptl/tcb-offsets.sym
++++ b/sysdeps/microblaze/nptl/tcb-offsets.sym
+@@ -7,5 +7,4 @@
+ #define thread_offsetof(mem) (long)(offsetof (struct pthread, mem) - sizeof (struct pthread))
+
+ MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
+-PID_OFFSET thread_offsetof (pid)
+ TID_OFFSET thread_offsetof (tid)
+diff --git a/sysdeps/mips/Makefile b/sysdeps/mips/Makefile
+index 3d3552322b..7c1d77941e 100644
+--- a/sysdeps/mips/Makefile
++++ b/sysdeps/mips/Makefile
+@@ -9,6 +9,7 @@ endif
+
+ ifeq ($(subdir),rt)
+ librt-sysdep_routines += rt-sysdep
++librt-shared-only-routines += rt-sysdep
+ endif
+
+ ifeq ($(subdir),debug)
+diff --git a/sysdeps/mips/mips32/crti.S b/sysdeps/mips/mips32/crti.S
+index 5c0ad7328a..dfbbdc4f8f 100644
+--- a/sysdeps/mips/mips32/crti.S
++++ b/sysdeps/mips/mips32/crti.S
+@@ -74,6 +74,7 @@ _init:
+ .reloc 1f,R_MIPS_JALR,PREINIT_FUNCTION
+ 1: jalr $25
+ .Lno_weak_fn:
++ .insn
+ #else
+ lw $25,%got(PREINIT_FUNCTION)($28)
+ .reloc 1f,R_MIPS_JALR,PREINIT_FUNCTION
+diff --git a/sysdeps/mips/mips64/n32/crti.S b/sysdeps/mips/mips64/n32/crti.S
+index 00b89f3894..afe6d8edaa 100644
+--- a/sysdeps/mips/mips64/n32/crti.S
++++ b/sysdeps/mips/mips64/n32/crti.S
+@@ -74,6 +74,7 @@ _init:
+ .reloc 1f,R_MIPS_JALR,PREINIT_FUNCTION
+ 1: jalr $25
+ .Lno_weak_fn:
++ .insn
+ #else
+ lw $25,%got_disp(PREINIT_FUNCTION)($28)
+ .reloc 1f,R_MIPS_JALR,PREINIT_FUNCTION
+diff --git a/sysdeps/mips/mips64/n64/crti.S b/sysdeps/mips/mips64/n64/crti.S
+index f59b20c631..4049d29290 100644
+--- a/sysdeps/mips/mips64/n64/crti.S
++++ b/sysdeps/mips/mips64/n64/crti.S
+@@ -74,6 +74,7 @@ _init:
+ .reloc 1f,R_MIPS_JALR,PREINIT_FUNCTION
+ 1: jalr $25
+ .Lno_weak_fn:
++ .insn
+ #else
+ ld $25,%got_disp(PREINIT_FUNCTION)($28)
+ .reloc 1f,R_MIPS_JALR,PREINIT_FUNCTION
+diff --git a/sysdeps/mips/nptl/Makefile b/sysdeps/mips/nptl/Makefile
+index 117744ffe2..dda154d842 100644
+--- a/sysdeps/mips/nptl/Makefile
++++ b/sysdeps/mips/nptl/Makefile
+@@ -21,4 +21,5 @@ endif
+
+ ifeq ($(subdir),nptl)
+ libpthread-sysdep_routines += nptl-sysdep
++libpthread-shared-only-routines += nptl-sysdep
+ endif
+diff --git a/sysdeps/mips/nptl/tcb-offsets.sym b/sysdeps/mips/nptl/tcb-offsets.sym
+index e0e71dc430..9ea25b94a8 100644
+--- a/sysdeps/mips/nptl/tcb-offsets.sym
++++ b/sysdeps/mips/nptl/tcb-offsets.sym
+@@ -7,5 +7,4 @@
+ #define thread_offsetof(mem) (long)(offsetof(struct pthread, mem) - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)
+
+ MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
+-PID_OFFSET thread_offsetof (pid)
+ TID_OFFSET thread_offsetof (tid)
+diff --git a/sysdeps/nacl/clock.c b/sysdeps/nacl/clock.c
+index 664ad650c3..b6fbcfd2dd 100644
+--- a/sysdeps/nacl/clock.c
++++ b/sysdeps/nacl/clock.c
+@@ -24,6 +24,6 @@
+ clock_t
+ clock (void)
+ {
+- nacl_abi_clock_t result;
++ nacl_irt_clock_t result;
+ return NACL_CALL (__nacl_irt_basic.clock (&result), result);
+ }
+diff --git a/sysdeps/nacl/dup.c b/sysdeps/nacl/dup.c
+index 34a7cd46d4..cbce3f5a5a 100644
+--- a/sysdeps/nacl/dup.c
++++ b/sysdeps/nacl/dup.c
+@@ -27,4 +27,5 @@ __dup (int fd)
+ int result;
+ return NACL_CALL (__nacl_irt_fdio.dup (fd, &result), result);
+ }
++libc_hidden_def (__dup)
+ weak_alias (__dup, dup)
+diff --git a/sysdeps/nios2/nptl/tcb-offsets.sym b/sysdeps/nios2/nptl/tcb-offsets.sym
+index d9ae952585..3cd8d984ac 100644
+--- a/sysdeps/nios2/nptl/tcb-offsets.sym
++++ b/sysdeps/nios2/nptl/tcb-offsets.sym
+@@ -9,6 +9,5 @@
+ # define thread_offsetof(mem) ((ptrdiff_t) THREAD_SELF + offsetof (struct pthread, mem))
+
+ MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
+-PID_OFFSET thread_offsetof (pid)
+ TID_OFFSET thread_offsetof (tid)
+ POINTER_GUARD (offsetof (tcbhead_t, pointer_guard) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
+diff --git a/sysdeps/nptl/fork.c b/sysdeps/nptl/fork.c
+index 616d897a36..a5d1e86d71 100644
+--- a/sysdeps/nptl/fork.c
++++ b/sysdeps/nptl/fork.c
+@@ -131,16 +131,6 @@ __libc_fork (void)
+ __malloc_fork_lock_parent ();
+ }
+
+-#ifndef NDEBUG
+- pid_t ppid = THREAD_GETMEM (THREAD_SELF, tid);
+-#endif
+-
+- /* We need to prevent the getpid() code to update the PID field so
+- that, if a signal arrives in the child very early and the signal
+- handler uses getpid(), the value returned is correct. */
+- pid_t parentpid = THREAD_GETMEM (THREAD_SELF, pid);
+- THREAD_SETMEM (THREAD_SELF, pid, -parentpid);
+-
+ #ifdef ARCH_FORK
+ pid = ARCH_FORK ();
+ #else
+@@ -153,15 +143,10 @@ __libc_fork (void)
+ {
+ struct pthread *self = THREAD_SELF;
+
+- assert (THREAD_GETMEM (self, tid) != ppid);
+-
+ /* See __pthread_once. */
+ if (__fork_generation_pointer != NULL)
+ *__fork_generation_pointer += __PTHREAD_ONCE_FORK_GEN_INCR;
+
+- /* Adjust the PID field for the new process. */
+- THREAD_SETMEM (self, pid, THREAD_GETMEM (self, tid));
+-
+ #if HP_TIMING_AVAIL
+ /* The CPU clock of the thread and process have to be set to zero. */
+ hp_timing_t now;
+@@ -231,11 +216,6 @@ __libc_fork (void)
+ }
+ else
+ {
+- assert (THREAD_GETMEM (THREAD_SELF, tid) == ppid);
+-
+- /* Restore the PID value. */
+- THREAD_SETMEM (THREAD_SELF, pid, parentpid);
+-
+ /* Release acquired locks in the multi-threaded case. */
+ if (multiple_threads)
+ {
+diff --git a/sysdeps/posix/wait3.c b/sysdeps/posix/wait3.c
+index cf43d973a7..73722d2be6 100644
+--- a/sysdeps/posix/wait3.c
++++ b/sysdeps/posix/wait3.c
+@@ -33,7 +33,7 @@ __wait3 (int *stat_loc, int options, struct rusage *usage)
+ __set_errno (ENOSYS);
+ return (pid_t) -1;
+ }
+- return __waitpid (WAIT_ANY, stat_loc.__iptr, options);
++ return __waitpid (WAIT_ANY, stat_loc, options);
+ }
+
+ weak_alias (__wait3, wait3)
+diff --git a/sysdeps/powerpc/fpu/libm-test-ulps b/sysdeps/powerpc/fpu/libm-test-ulps
+index 7f37c813d0..36b700c520 100644
+--- a/sysdeps/powerpc/fpu/libm-test-ulps
++++ b/sysdeps/powerpc/fpu/libm-test-ulps
+@@ -36,8 +36,8 @@ double: 2
+ float: 2
+ idouble: 2
+ ifloat: 2
+-ildouble: 1
+-ldouble: 1
++ildouble: 2
++ldouble: 2
+
+ Function: "acosh_downward":
+ double: 1
+@@ -52,8 +52,8 @@ double: 2
+ float: 2
+ idouble: 2
+ ifloat: 2
+-ildouble: 3
+-ldouble: 3
++ildouble: 4
++ldouble: 4
+
+ Function: "acosh_upward":
+ double: 2
+@@ -122,8 +122,8 @@ double: 3
+ float: 3
+ idouble: 3
+ ifloat: 3
+-ildouble: 4
+-ldouble: 4
++ildouble: 7
++ldouble: 7
+
+ Function: "atan":
+ double: 1
+@@ -216,8 +216,8 @@ double: 3
+ float: 3
+ idouble: 3
+ ifloat: 3
+-ildouble: 3
+-ldouble: 3
++ildouble: 4
++ldouble: 4
+
+ Function: "cabs":
+ double: 1
+@@ -272,8 +272,8 @@ double: 5
+ float: 3
+ idouble: 5
+ ifloat: 3
+-ildouble: 5
+-ldouble: 5
++ildouble: 8
++ldouble: 8
+
+ Function: Real part of "cacos_towardzero":
+ double: 2
+@@ -288,8 +288,8 @@ double: 5
+ float: 3
+ idouble: 5
+ ifloat: 3
+-ildouble: 5
+-ldouble: 5
++ildouble: 8
++ldouble: 8
+
+ Function: Real part of "cacos_upward":
+ double: 2
+@@ -328,8 +328,8 @@ double: 5
+ float: 3
+ idouble: 5
+ ifloat: 3
+-ildouble: 5
+-ldouble: 5
++ildouble: 8
++ldouble: 8
+
+ Function: Imaginary part of "cacosh_downward":
+ double: 2
+@@ -344,8 +344,8 @@ double: 5
+ float: 3
+ idouble: 5
+ ifloat: 3
+-ildouble: 5
+-ldouble: 5
++ildouble: 8
++ldouble: 8
+
+ Function: Imaginary part of "cacosh_towardzero":
+ double: 2
+@@ -432,8 +432,8 @@ double: 5
+ float: 3
+ idouble: 5
+ ifloat: 3
+-ildouble: 5
+-ldouble: 5
++ildouble: 8
++ldouble: 8
+
+ Function: Real part of "casin_towardzero":
+ double: 3
+@@ -448,8 +448,8 @@ double: 5
+ float: 3
+ idouble: 5
+ ifloat: 3
+-ildouble: 5
+-ldouble: 5
++ildouble: 8
++ldouble: 8
+
+ Function: Real part of "casin_upward":
+ double: 2
+@@ -488,8 +488,8 @@ double: 5
+ float: 3
+ idouble: 5
+ ifloat: 3
+-ildouble: 5
+-ldouble: 5
++ildouble: 8
++ldouble: 8
+
+ Function: Imaginary part of "casinh_downward":
+ double: 3
+@@ -504,8 +504,8 @@ double: 5
+ float: 3
+ idouble: 5
+ ifloat: 3
+-ildouble: 5
+-ldouble: 5
++ildouble: 8
++ldouble: 8
+
+ Function: Imaginary part of "casinh_towardzero":
+ double: 3
+@@ -696,8 +696,8 @@ double: 1
+ float: 1
+ idouble: 1
+ ifloat: 1
+-ildouble: 1
+-ldouble: 1
++ildouble: 2
++ldouble: 2
+
+ Function: Real part of "ccos_downward":
+ double: 1
+@@ -1132,8 +1132,8 @@ double: 1
+ float: 1
+ idouble: 1
+ ifloat: 1
+-ildouble: 1
+-ldouble: 1
++ildouble: 2
++ldouble: 2
+
+ Function: Imaginary part of "csin":
+ ildouble: 1
+@@ -1198,8 +1198,8 @@ double: 1
+ float: 1
+ idouble: 1
+ ifloat: 1
+-ildouble: 1
+-ldouble: 1
++ildouble: 2
++ldouble: 2
+
+ Function: Real part of "csinh_downward":
+ double: 2
+@@ -1318,8 +1318,8 @@ double: 1
+ float: 1
+ idouble: 1
+ ifloat: 1
+-ildouble: 2
+-ldouble: 2
++ildouble: 3
++ldouble: 3
+
+ Function: Imaginary part of "ctan":
+ double: 2
+@@ -1390,8 +1390,8 @@ double: 2
+ float: 1
+ idouble: 2
+ ifloat: 1
+-ildouble: 2
+-ldouble: 2
++ildouble: 3
++ldouble: 3
+
+ Function: Real part of "ctanh_downward":
+ double: 4
+@@ -1478,8 +1478,8 @@ double: 2
+ float: 2
+ idouble: 2
+ ifloat: 2
+-ildouble: 2
+-ldouble: 2
++ildouble: 3
++ldouble: 3
+
+ Function: "erfc_downward":
+ double: 3
+@@ -1564,8 +1564,8 @@ double: 1
+ float: 1
+ idouble: 1
+ ifloat: 1
+-ildouble: 1
+-ldouble: 1
++ildouble: 2
++ldouble: 2
+
+ Function: "exp2_upward":
+ double: 1
+@@ -1588,8 +1588,8 @@ ildouble: 2
+ ldouble: 2
+
+ Function: "exp_upward":
+-float: 1
+ double: 1
++float: 1
+ idouble: 1
+ ifloat: 1
+ ildouble: 1
+@@ -1624,8 +1624,8 @@ double: 1
+ float: 1
+ idouble: 1
+ ifloat: 1
+-ildouble: 4
+-ldouble: 4
++ildouble: 6
++ldouble: 6
+
+ Function: "fma":
+ ildouble: 1
+@@ -1688,8 +1688,8 @@ double: 4
+ float: 5
+ idouble: 4
+ ifloat: 5
+-ildouble: 10
+-ldouble: 10
++ildouble: 11
++ldouble: 11
+
+ Function: "hypot":
+ double: 1
+@@ -1752,8 +1752,8 @@ double: 1
+ float: 2
+ idouble: 1
+ ifloat: 2
+-ildouble: 1
+-ldouble: 1
++ildouble: 2
++ldouble: 2
+
+ Function: "j1_downward":
+ double: 3
+@@ -1840,8 +1840,8 @@ double: 4
+ float: 5
+ idouble: 4
+ ifloat: 5
+-ildouble: 10
+-ldouble: 10
++ildouble: 11
++ldouble: 11
+
+ Function: "log":
+ float: 1
+@@ -1910,8 +1910,8 @@ double: 2
+ float: 2
+ idouble: 2
+ ifloat: 2
+-ildouble: 2
+-ldouble: 2
++ildouble: 3
++ldouble: 3
+
+ Function: "log2":
+ double: 1
+@@ -2184,16 +2184,16 @@ double: 3
+ float: 3
+ idouble: 3
+ ifloat: 3
+-ildouble: 3
+-ldouble: 3
++ildouble: 4
++ldouble: 4
+
+ Function: "tanh_towardzero":
+ double: 2
+ float: 2
+ idouble: 2
+ ifloat: 2
+-ildouble: 3
+-ldouble: 3
++ildouble: 4
++ldouble: 4
+
+ Function: "tanh_upward":
+ double: 3
+diff --git a/sysdeps/powerpc/ifunc-sel.h b/sysdeps/powerpc/ifunc-sel.h
+index 526d8ed88b..ac589bd3c0 100644
+--- a/sysdeps/powerpc/ifunc-sel.h
++++ b/sysdeps/powerpc/ifunc-sel.h
+@@ -17,15 +17,17 @@ ifunc_sel (int (*f1) (void), int (*f2) (void), int (*f3) (void))
+ "addis %0,11,%2-1b@ha\n\t"
+ "addi %0,%0,%2-1b@l\n\t"
+ "cmpwi 12,1\n\t"
+- "beqlr\n\t"
++ "beq 2f\n\t"
+ "addis %0,11,%3-1b@ha\n\t"
+ "addi %0,%0,%3-1b@l\n\t"
+ "cmpwi 12,-1\n\t"
+- "beqlr\n\t"
++ "beq 2f\n\t"
+ "addis %0,11,%4-1b@ha\n\t"
+- "addi %0,%0,%4-1b@l"
++ "addi %0,%0,%4-1b@l\n\t"
++ "2:"
+ : "=r" (ret)
+- : "X" (&global), "X" (f1), "X" (f2), "X" (f3));
++ : "i" (&global), "i" (f1), "i" (f2), "i" (f3)
++ : "11", "12", "cr0");
+ return ret;
+ }
+
+@@ -40,7 +42,8 @@ ifunc_one (int (*f1) (void))
+ "addis %0,%0,%1-1b@ha\n\t"
+ "addi %0,%0,%1-1b@l"
+ : "=r" (ret)
+- : "X" (f1));
++ : "i" (f1)
++ : "12");
+ return ret;
+ }
+ #endif
+diff --git a/sysdeps/powerpc/nptl/tcb-offsets.sym b/sysdeps/powerpc/nptl/tcb-offsets.sym
+index f580e69555..7c9fd33562 100644
+--- a/sysdeps/powerpc/nptl/tcb-offsets.sym
++++ b/sysdeps/powerpc/nptl/tcb-offsets.sym
+@@ -13,7 +13,6 @@
+ #if TLS_MULTIPLE_THREADS_IN_TCB
+ MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
+ #endif
+-PID thread_offsetof (pid)
+ TID thread_offsetof (tid)
+ POINTER_GUARD (offsetof (tcbhead_t, pointer_guard) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
+ TAR_SAVE (offsetof (tcbhead_t, tar_save) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
+diff --git a/sysdeps/powerpc/powerpc32/power6/memset.S b/sysdeps/powerpc/powerpc32/power6/memset.S
+index b2a222edd2..d5dbe83af2 100644
+--- a/sysdeps/powerpc/powerpc32/power6/memset.S
++++ b/sysdeps/powerpc/powerpc32/power6/memset.S
+@@ -394,7 +394,7 @@ L(cacheAlignedx):
+ /* A simple loop for the longer (>640 bytes) lengths. This form limits
+ the branch miss-predicted to exactly 1 at loop exit.*/
+ L(cacheAligned512):
+- cmpli cr1,rLEN,128
++ cmplwi cr1,rLEN,128
+ blt cr1,L(cacheAligned1)
+ dcbz 0,rMEMP
+ addi rLEN,rLEN,-128
+diff --git a/sysdeps/powerpc/powerpc32/power9/multiarch/Implies b/sysdeps/powerpc/powerpc32/power9/multiarch/Implies
+index 4393b56872..1a46ef0035 100644
+--- a/sysdeps/powerpc/powerpc32/power9/multiarch/Implies
++++ b/sysdeps/powerpc/powerpc32/power9/multiarch/Implies
+@@ -1 +1 @@
+-powerpc/powerpc32/power8/fpu/multiarch
++powerpc/powerpc32/power8/multiarch
+diff --git a/sysdeps/powerpc/powerpc64/power6/memset.S b/sysdeps/powerpc/powerpc64/power6/memset.S
+index c2d1c4e600..d445b1e1ef 100644
+--- a/sysdeps/powerpc/powerpc64/power6/memset.S
++++ b/sysdeps/powerpc/powerpc64/power6/memset.S
+@@ -251,7 +251,7 @@ L(cacheAlignedx):
+ /* A simple loop for the longer (>640 bytes) lengths. This form limits
+ the branch miss-predicted to exactly 1 at loop exit.*/
+ L(cacheAligned512):
+- cmpli cr1,rLEN,128
++ cmpldi cr1,rLEN,128
+ blt cr1,L(cacheAligned1)
+ dcbz 0,rMEMP
+ addi rLEN,rLEN,-128
+diff --git a/sysdeps/powerpc/powerpc64/power9/fpu/Implies b/sysdeps/powerpc/powerpc64/power9/fpu/Implies
+index fad2505ab9..ae0dbaf857 100644
+--- a/sysdeps/powerpc/powerpc64/power9/fpu/Implies
++++ b/sysdeps/powerpc/powerpc64/power9/fpu/Implies
+@@ -1,2 +1 @@
+ powerpc/powerpc64/power8/fpu
+-powerpc/powerpc64/power8
+diff --git a/sysdeps/s390/nptl/Makefile b/sysdeps/s390/nptl/Makefile
+index 5734b983b0..3a391c8217 100644
+--- a/sysdeps/s390/nptl/Makefile
++++ b/sysdeps/s390/nptl/Makefile
+@@ -21,4 +21,5 @@ endif
+
+ ifeq ($(subdir),nptl)
+ libpthread-routines += ptw-sysdep
++libpthread-shared-only-routines += ptw-sysdep
+ endif
+diff --git a/sysdeps/s390/nptl/tcb-offsets.sym b/sysdeps/s390/nptl/tcb-offsets.sym
+index 9cfae211e0..9c1c01f353 100644
+--- a/sysdeps/s390/nptl/tcb-offsets.sym
++++ b/sysdeps/s390/nptl/tcb-offsets.sym
+@@ -3,5 +3,4 @@
+
+ MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads)
+ STACK_GUARD offsetof (tcbhead_t, stack_guard)
+-PID offsetof (struct pthread, pid)
+ TID offsetof (struct pthread, tid)
+diff --git a/sysdeps/sh/nptl/tcb-offsets.sym b/sysdeps/sh/nptl/tcb-offsets.sym
+index ac63b5b93b..4963e1506f 100644
+--- a/sysdeps/sh/nptl/tcb-offsets.sym
++++ b/sysdeps/sh/nptl/tcb-offsets.sym
+@@ -4,7 +4,6 @@
+
+ RESULT offsetof (struct pthread, result)
+ TID offsetof (struct pthread, tid)
+-PID offsetof (struct pthread, pid)
+ CANCELHANDLING offsetof (struct pthread, cancelhandling)
+ CLEANUP_JMP_BUF offsetof (struct pthread, cleanup_jmp_buf)
+ MULTIPLE_THREADS_OFFSET offsetof (struct pthread, header.multiple_threads)
+diff --git a/sysdeps/sparc/nptl/tcb-offsets.sym b/sysdeps/sparc/nptl/tcb-offsets.sym
+index 923af8a5b7..f75d02065e 100644
+--- a/sysdeps/sparc/nptl/tcb-offsets.sym
++++ b/sysdeps/sparc/nptl/tcb-offsets.sym
+@@ -3,5 +3,4 @@
+
+ MULTIPLE_THREADS_OFFSET offsetof (tcbhead_t, multiple_threads)
+ POINTER_GUARD offsetof (tcbhead_t, pointer_guard)
+-PID offsetof (struct pthread, pid)
+ TID offsetof (struct pthread, tid)
+diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
+index ebbe28b07f..13d3c6db51 100644
+--- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
++++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/Makefile
+@@ -4,8 +4,8 @@ libm-sysdep_routines += m_copysignf-vis3 m_copysign-vis3 s_fabs-vis3 \
+ s_fabsf-vis3 s_llrintf-vis3 s_llrint-vis3 \
+ s_rintf-vis3 s_rint-vis3 w_sqrt-vis3 w_sqrtf-vis3 \
+ s_fminf-vis3 s_fmin-vis3 s_fmaxf-vis3 s_fmax-vis3 \
+- s_fmaf-vis3 s_fma-vis3 s_fdimf-vis3 s_fdim-vis3 \
+- s_nearbyint-vis3 s_nearbyintf-vis3
++ s_fmaf-vis3 s_fma-vis3 s_nearbyint-vis3 \
++ s_nearbyintf-vis3
+ sysdep_routines += s_copysignf-vis3 s_copysign-vis3
+ endif
+ endif
+diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim.S
+deleted file mode 100644
+index 4b13408244..0000000000
+--- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdim.S
++++ /dev/null
+@@ -1,19 +0,0 @@
+-#include <sparc-ifunc.h>
+-#include <math_ldbl_opt.h>
+-
+-SPARC_ASM_VIS3_IFUNC(fdim)
+-
+-weak_alias (__fdim, fdim)
+-
+-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
+-compat_symbol (libm, __fdim, fdiml, GLIBC_2_1);
+-#endif
+-
+-# undef weak_alias
+-# define weak_alias(a, b)
+-# undef compat_symbol
+-# define compat_symbol(a, b, c, d)
+-
+-#define __fdim __fdim_generic
+-
+-#include "../s_fdim.S"
+diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdimf.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdimf.S
+deleted file mode 100644
+index 30381d6a59..0000000000
+--- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_fdimf.S
++++ /dev/null
+@@ -1,12 +0,0 @@
+-#include <sparc-ifunc.h>
+-
+-SPARC_ASM_VIS3_IFUNC(fdimf)
+-
+-weak_alias (__fdimf, fdimf)
+-
+-# undef weak_alias
+-# define weak_alias(a, b)
+-
+-#define __fdimf __fdimf_generic
+-
+-#include "../s_fdimf.S"
+diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint-vis3.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint-vis3.S
+index d9ff0cc288..ff81b0da83 100644
+--- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint-vis3.S
++++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyint-vis3.S
+@@ -36,15 +36,15 @@
+ #define SIGN_BIT %f12 /* -0.0 */
+
+ ENTRY (__nearbyint_vis3)
++ sllx %o0, 32, %o0
++ or %o0, %o1, %o0
++ movxtod %o0, %f0
+ fcmpd %fcc3, %f0, %f0 /* Check for sNaN */
+ st %fsr, [%sp + 88]
+ sethi %hi(TWO_FIFTYTWO), %o2
+ sethi %hi(0xf8003e0), %o5
+ ld [%sp + 88], %o4
+- sllx %o0, 32, %o0
+ or %o5, %lo(0xf8003e0), %o5
+- or %o0, %o1, %o0
+- movxtod %o0, %f0
+ andn %o4, %o5, %o4
+ fzero ZERO
+ st %o4, [%sp + 80]
+diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf-vis3.S b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf-vis3.S
+index 5cd1eb02db..833a0dfc24 100644
+--- a/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf-vis3.S
++++ b/sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_nearbyintf-vis3.S
+@@ -35,9 +35,9 @@
+ #define SIGN_BIT %f12 /* -0.0 */
+
+ ENTRY (__nearbyintf_vis3)
++ movwtos %o0, %f1
+ fcmps %fcc3, %f1, %f1 /* Check for sNaN */
+ st %fsr, [%sp + 88]
+- movwtos %o0, %f1
+ sethi %hi(TWO_TWENTYTHREE), %o2
+ sethi %hi(0xf8003e0), %o5
+ ld [%sp + 88], %o4
+diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyint.S b/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyint.S
+index 84a10971a4..198440a5bc 100644
+--- a/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyint.S
++++ b/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyint.S
+@@ -36,21 +36,21 @@
+ #define SIGN_BIT %f12 /* -0.0 */
+
+ ENTRY (__nearbyint)
++ sllx %o0, 32, %o0
++ or %o0, %o1, %o0
++ stx %o0, [%sp + 72]
++ ldd [%sp + 72], %f0
+ fcmpd %fcc3, %f0, %f0 /* Check for sNaN */
+ st %fsr, [%sp + 88]
+ sethi %hi(TWO_FIFTYTWO), %o2
+ sethi %hi(0xf8003e0), %o5
+ ld [%sp + 88], %o4
+- sllx %o0, 32, %o0
+ or %o5, %lo(0xf8003e0), %o5
+- or %o0, %o1, %o0
+ andn %o4, %o5, %o4
+ fzero ZERO
+ st %o4, [%sp + 80]
+- stx %o0, [%sp + 72]
+ sllx %o2, 32, %o2
+ fnegd ZERO, SIGN_BIT
+- ldd [%sp + 72], %f0
+ ld [%sp + 80], %fsr
+ stx %o2, [%sp + 72]
+ fabsd %f0, %f14
+diff --git a/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyintf.S b/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyintf.S
+index d5cf5ce815..9be41f6c22 100644
+--- a/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyintf.S
++++ b/sysdeps/sparc/sparc32/sparcv9/fpu/s_nearbyintf.S
+@@ -35,9 +35,10 @@
+ #define SIGN_BIT %f12 /* -0.0 */
+
+ ENTRY (__nearbyintf)
++ st %o0, [%sp + 68]
++ ld [%sp + 68], %f1
+ fcmps %fcc3, %f1, %f1 /* Check for sNaN */
+ st %fsr, [%sp + 88]
+- st %o0, [%sp + 68]
+ sethi %hi(TWO_TWENTYTHREE), %o2
+ sethi %hi(0xf8003e0), %o5
+ ld [%sp + 88], %o4
+@@ -46,7 +47,6 @@ ENTRY (__nearbyintf)
+ fnegs ZERO, SIGN_BIT
+ andn %o4, %o5, %o4
+ st %o4, [%sp + 80]
+- ld [%sp + 68], %f1
+ ld [%sp + 80], %fsr
+ st %o2, [%sp + 68]
+ fabss %f1, %f14
+diff --git a/sysdeps/tile/nptl/tcb-offsets.sym b/sysdeps/tile/nptl/tcb-offsets.sym
+index 6740bc976f..0147ffafb7 100644
+--- a/sysdeps/tile/nptl/tcb-offsets.sym
++++ b/sysdeps/tile/nptl/tcb-offsets.sym
+@@ -9,7 +9,6 @@
+ #define thread_offsetof(mem) (long)(offsetof(struct pthread, mem) - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)
+
+ MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
+-PID_OFFSET thread_offsetof (pid)
+ TID_OFFSET thread_offsetof (tid)
+ POINTER_GUARD (offsetof (tcbhead_t, pointer_guard) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
+ FEEDBACK_DATA_OFFSET (offsetof (tcbhead_t, feedback_data) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
+diff --git a/sysdeps/unix/alpha/Makefile b/sysdeps/unix/alpha/Makefile
+index 441aa02a83..0660847f15 100644
+--- a/sysdeps/unix/alpha/Makefile
++++ b/sysdeps/unix/alpha/Makefile
+@@ -1,3 +1,4 @@
+ ifeq ($(subdir),rt)
+ librt-sysdep_routines += rt-sysdep
++librt-shared-only-routines += rt-sysdep
+ endif
+diff --git a/sysdeps/unix/sysdep.h b/sysdeps/unix/sysdep.h
+index 94a2ce0e37..38c2432002 100644
+--- a/sysdeps/unix/sysdep.h
++++ b/sysdeps/unix/sysdep.h
+@@ -24,42 +24,79 @@
+ #define SYSCALL__(name, args) PSEUDO (__##name, name, args)
+ #define SYSCALL(name, args) PSEUDO (name, name, args)
+
+-#define __SYSCALL0(name) \
++#define __SYSCALL_CONCAT_X(a,b) a##b
++#define __SYSCALL_CONCAT(a,b) __SYSCALL_CONCAT_X (a, b)
++
++
++#define __INTERNAL_SYSCALL0(name, err) \
++ INTERNAL_SYSCALL (name, err, 0)
++#define __INTERNAL_SYSCALL1(name, err, a1) \
++ INTERNAL_SYSCALL (name, err, 1, a1)
++#define __INTERNAL_SYSCALL2(name, err, a1, a2) \
++ INTERNAL_SYSCALL (name, err, 2, a1, a2)
++#define __INTERNAL_SYSCALL3(name, err, a1, a2, a3) \
++ INTERNAL_SYSCALL (name, err, 3, a1, a2, a3)
++#define __INTERNAL_SYSCALL4(name, err, a1, a2, a3, a4) \
++ INTERNAL_SYSCALL (name, err, 4, a1, a2, a3, a4)
++#define __INTERNAL_SYSCALL5(name, err, a1, a2, a3, a4, a5) \
++ INTERNAL_SYSCALL (name, err, 5, a1, a2, a3, a4, a5)
++#define __INTERNAL_SYSCALL6(name, err, a1, a2, a3, a4, a5, a6) \
++ INTERNAL_SYSCALL (name, err, 6, a1, a2, a3, a4, a5, a6)
++#define __INTERNAL_SYSCALL7(name, err, a1, a2, a3, a4, a5, a6, a7) \
++ INTERNAL_SYSCALL (name, err, 7, a1, a2, a3, a4, a5, a6, a7)
++
++#define __INTERNAL_SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,o,...) o
++#define __INTERNAL_SYSCALL_NARGS(...) \
++ __INTERNAL_SYSCALL_NARGS_X (__VA_ARGS__,7,6,5,4,3,2,1,0,)
++#define __INTERNAL_SYSCALL_DISP(b,...) \
++ __SYSCALL_CONCAT (b,__INTERNAL_SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
++
++/* Issue a syscall defined by syscall number plus any other argument required.
++ It is similar to INTERNAL_SYSCALL macro, but without the need to pass the
++ expected argument number as second parameter. */
++#define INTERNAL_SYSCALL_CALL(...) \
++ __INTERNAL_SYSCALL_DISP (__INTERNAL_SYSCALL, __VA_ARGS__)
++
++#define __INLINE_SYSCALL0(name) \
+ INLINE_SYSCALL (name, 0)
+-#define __SYSCALL1(name, a1) \
++#define __INLINE_SYSCALL1(name, a1) \
+ INLINE_SYSCALL (name, 1, a1)
+-#define __SYSCALL2(name, a1, a2) \
++#define __INLINE_SYSCALL2(name, a1, a2) \
+ INLINE_SYSCALL (name, 2, a1, a2)
+-#define __SYSCALL3(name, a1, a2, a3) \
++#define __INLINE_SYSCALL3(name, a1, a2, a3) \
+ INLINE_SYSCALL (name, 3, a1, a2, a3)
+-#define __SYSCALL4(name, a1, a2, a3, a4) \
++#define __INLINE_SYSCALL4(name, a1, a2, a3, a4) \
+ INLINE_SYSCALL (name, 4, a1, a2, a3, a4)
+-#define __SYSCALL5(name, a1, a2, a3, a4, a5) \
++#define __INLINE_SYSCALL5(name, a1, a2, a3, a4, a5) \
+ INLINE_SYSCALL (name, 5, a1, a2, a3, a4, a5)
+-#define __SYSCALL6(name, a1, a2, a3, a4, a5, a6) \
++#define __INLINE_SYSCALL6(name, a1, a2, a3, a4, a5, a6) \
+ INLINE_SYSCALL (name, 6, a1, a2, a3, a4, a5, a6)
+-#define __SYSCALL7(name, a1, a2, a3, a4, a5, a6, a7) \
++#define __INLINE_SYSCALL7(name, a1, a2, a3, a4, a5, a6, a7) \
+ INLINE_SYSCALL (name, 7, a1, a2, a3, a4, a5, a6, a7)
+
+-#define __SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,...) n
+-#define __SYSCALL_NARGS(...) \
+- __SYSCALL_NARGS_X (__VA_ARGS__,7,6,5,4,3,2,1,0,)
+-#define __SYSCALL_CONCAT_X(a,b) a##b
+-#define __SYSCALL_CONCAT(a,b) __SYSCALL_CONCAT_X (a, b)
+-#define __SYSCALL_DISP(b,...) \
+- __SYSCALL_CONCAT (b,__SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
++#define __INLINE_SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,...) n
++#define __INLINE_SYSCALL_NARGS(...) \
++ __INLINE_SYSCALL_NARGS_X (__VA_ARGS__,7,6,5,4,3,2,1,0,)
++#define __INLINE_SYSCALL_DISP(b,...) \
++ __SYSCALL_CONCAT (b,__INLINE_SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
+
+-#define __SYSCALL_CALL(...) __SYSCALL_DISP (__SYSCALL, __VA_ARGS__)
++/* Issue a syscall defined by syscall number plus any other argument
++ required. Any error will be handled using arch defined macros and errno
++ will be set accordingly.
++ It is similar to INLINE_SYSCALL macro, but without the need to pass the
++ expected argument number as second parameter. */
++#define INLINE_SYSCALL_CALL(...) \
++ __INLINE_SYSCALL_DISP (__INLINE_SYSCALL, __VA_ARGS__)
+
+ #define SYSCALL_CANCEL(...) \
+ ({ \
+ long int sc_ret; \
+ if (SINGLE_THREAD_P) \
+- sc_ret = __SYSCALL_CALL (__VA_ARGS__); \
++ sc_ret = INLINE_SYSCALL_CALL (__VA_ARGS__); \
+ else \
+ { \
+ int sc_cancel_oldtype = LIBC_CANCEL_ASYNC (); \
+- sc_ret = __SYSCALL_CALL (__VA_ARGS__); \
++ sc_ret = INLINE_SYSCALL_CALL (__VA_ARGS__); \
+ LIBC_CANCEL_RESET (sc_cancel_oldtype); \
+ } \
+ sc_ret; \
+diff --git a/sysdeps/unix/sysv/linux/aarch64/clone.S b/sysdeps/unix/sysv/linux/aarch64/clone.S
+index 76baa7a698..96482e53c0 100644
+--- a/sysdeps/unix/sysv/linux/aarch64/clone.S
++++ b/sysdeps/unix/sysv/linux/aarch64/clone.S
+@@ -72,16 +72,6 @@ thread_start:
+ cfi_undefined (x30)
+ mov x29, 0
+
+- tbnz x11, #CLONE_VM_BIT, 1f
+-
+- mov x8, #SYS_ify(getpid)
+- svc 0x0
+- mrs x1, tpidr_el0
+- sub x1, x1, #PTHREAD_SIZEOF
+- str w0, [x1, #PTHREAD_PID_OFFSET]
+- str w0, [x1, #PTHREAD_TID_OFFSET]
+-1:
+-
+ /* Pick the function arg and execute. */
+ mov x0, x12
+ blr x10
+diff --git a/sysdeps/unix/sysv/linux/aarch64/vfork.S b/sysdeps/unix/sysv/linux/aarch64/vfork.S
+index 577895eeb2..aeed0b29ce 100644
+--- a/sysdeps/unix/sysv/linux/aarch64/vfork.S
++++ b/sysdeps/unix/sysv/linux/aarch64/vfork.S
+@@ -27,27 +27,10 @@
+
+ ENTRY (__vfork)
+
+- /* Save the TCB-cached PID away in w3, and then negate the TCB
+- field. But if it's zero, set it to 0x80000000 instead. See
+- raise.c for the logic that relies on this value. */
+- mrs x2, tpidr_el0
+- sub x2, x2, #PTHREAD_SIZEOF
+- ldr w3, [x2, #PTHREAD_PID_OFFSET]
+- mov w1, #0x80000000
+- negs w0, w3
+- csel w0, w1, w0, eq
+- str w0, [x2, #PTHREAD_PID_OFFSET]
+-
+ mov x0, #0x4111 /* CLONE_VM | CLONE_VFORK | SIGCHLD */
+ mov x1, sp
+ DO_CALL (clone, 2)
+
+- /* Restore the original value of the TCB cache of the PID, if we're
+- the parent. But in the child (syscall return value equals zero),
+- leave things as they are. */
+- cbz x0, 1f
+- str w3, [x2, #PTHREAD_PID_OFFSET]
+-1:
+ cmn x0, #4095
+ b.cs .Lsyscall_error
+ RET
+diff --git a/sysdeps/unix/sysv/linux/alpha/Makefile b/sysdeps/unix/sysv/linux/alpha/Makefile
+index c089545e9b..3b523b70cf 100644
+--- a/sysdeps/unix/sysv/linux/alpha/Makefile
++++ b/sysdeps/unix/sysv/linux/alpha/Makefile
+@@ -40,4 +40,5 @@ endif # math
+ ifeq ($(subdir),nptl)
+ # pull in __syscall_error routine, __sigprocmask, __syscall_rt_sigaction
+ libpthread-routines += ptw-sysdep ptw-sigprocmask ptw-rt_sigaction
++libpthread-shared-only-routines += ptw-sysdep ptw-sigprocmask ptw-rt_sigaction
+ endif
+diff --git a/sysdeps/unix/sysv/linux/alpha/clone.S b/sysdeps/unix/sysv/linux/alpha/clone.S
+index 6a3154f9a7..2757bf20c3 100644
+--- a/sysdeps/unix/sysv/linux/alpha/clone.S
++++ b/sysdeps/unix/sysv/linux/alpha/clone.S
+@@ -91,13 +91,6 @@ thread_start:
+ cfi_def_cfa_register(fp)
+ cfi_undefined(ra)
+
+- /* Check and see if we need to reset the PID. */
+- ldq t0, 16(sp)
+- lda t1, CLONE_VM
+- and t0, t1, t2
+- beq t2, 2f
+-1:
+-
+ /* Load up the arguments. */
+ ldq pv, 0(sp)
+ ldq a0, 8(sp)
+@@ -120,15 +113,6 @@ thread_start:
+ halt
+
+ .align 4
+-2:
+- rduniq
+- mov v0, s0
+- lda v0, __NR_getxpid
+- callsys
+-3:
+- stl v0, PID_OFFSET(s0)
+- stl v0, TID_OFFSET(s0)
+- br 1b
+ cfi_endproc
+ .end thread_start
+
+diff --git a/sysdeps/unix/sysv/linux/alpha/vfork.S b/sysdeps/unix/sysv/linux/alpha/vfork.S
+index 9fc199ac41..e5f7ed0661 100644
+--- a/sysdeps/unix/sysv/linux/alpha/vfork.S
++++ b/sysdeps/unix/sysv/linux/alpha/vfork.S
+@@ -25,24 +25,9 @@ ENTRY(__libc_vfork)
+ rduniq
+ mov v0, a1
+
+- /* Save the TCB-cached PID away in A2, and then negate the TCB
+- field. But if it's zero, set it to 0x80000000 instead. See
+- raise.c for the logic that relies on this value. */
+- ldl a2, PID_OFFSET(v0)
+- ldah t0, -0x8000
+- negl a2, t1
+- cmovne a2, t1, t0
+- stl t0, PID_OFFSET(v0);
+-
+ lda v0, SYS_ify(vfork)
+ call_pal PAL_callsys
+
+- /* Restore the original value of the TCB cache of the PID, if we're
+- the parent. But in the child (syscall return value equals zero),
+- leave things as they are. */
+- beq v0, 1f
+- stl a2, PID_OFFSET(a1)
+-1:
+ /* Normal error check and return. */
+ bne a3, SYSCALL_ERROR_LABEL
+ ret
+diff --git a/sysdeps/unix/sysv/linux/arm/clone.S b/sysdeps/unix/sysv/linux/arm/clone.S
+index 7ff681804b..4c6325d088 100644
+--- a/sysdeps/unix/sysv/linux/arm/clone.S
++++ b/sysdeps/unix/sysv/linux/arm/clone.S
+@@ -70,16 +70,6 @@ PSEUDO_END (__clone)
+ 1:
+ .fnstart
+ .cantunwind
+- tst ip, #CLONE_VM
+- bne 2f
+- GET_TLS (lr)
+- mov r1, r0
+- ldr r7, =SYS_ify(getpid)
+- swi 0x0
+- NEGOFF_ADJ_BASE (r1, TID_OFFSET)
+- str r0, NEGOFF_OFF1 (r1, TID_OFFSET)
+- str r0, NEGOFF_OFF2 (r1, PID_OFFSET, TID_OFFSET)
+-2:
+ @ pick the function arg and call address off the stack and execute
+ ldr r0, [sp, #4]
+ ldr ip, [sp], #8
+diff --git a/sysdeps/unix/sysv/linux/arm/setcontext.S b/sysdeps/unix/sysv/linux/arm/setcontext.S
+index 603e508858..d1f168fece 100644
+--- a/sysdeps/unix/sysv/linux/arm/setcontext.S
++++ b/sysdeps/unix/sysv/linux/arm/setcontext.S
+@@ -86,12 +86,19 @@ weak_alias(__setcontext, setcontext)
+
+ /* Called when a makecontext() context returns. Start the
+ context in R4 or fall through to exit(). */
++ /* Unwind descriptors are looked up based on PC - 2, so we have to
++ make sure to mark the instruction preceding the __startcontext
++ label as .cantunwind. */
++ .fnstart
++ .cantunwind
++ nop
+ ENTRY(__startcontext)
+ movs r0, r4
+ bne PLTJMP(__setcontext)
+
+ @ New context was 0 - exit
+ b PLTJMP(HIDDEN_JUMPTARGET(exit))
++ .fnend
+ END(__startcontext)
+
+ #ifdef PIC
+diff --git a/sysdeps/unix/sysv/linux/arm/vfork.S b/sysdeps/unix/sysv/linux/arm/vfork.S
+index 500f5ca4be..794372ee12 100644
+--- a/sysdeps/unix/sysv/linux/arm/vfork.S
++++ b/sysdeps/unix/sysv/linux/arm/vfork.S
+@@ -28,16 +28,6 @@
+ and the process ID of the new process to the old process. */
+
+ ENTRY (__vfork)
+- /* Save the PID value. */
+- GET_TLS (r2)
+- NEGOFF_ADJ_BASE2 (r2, r0, PID_OFFSET) /* Save the TLS addr in r2. */
+- ldr r3, NEGOFF_OFF1 (r2, PID_OFFSET) /* Load the saved PID. */
+- rsbs r0, r3, #0 /* Negate it, and test for zero. */
+- /* Use 0x80000000 if it was 0. See raise.c for how this is used. */
+- it eq
+- moveq r0, #0x80000000
+- str r0, NEGOFF_OFF1 (r2, PID_OFFSET) /* Store the temp PID. */
+-
+ /* The DO_CALL macro saves r7 on the stack, to enable generation
+ of ARM unwind info. Since the stack is initially shared between
+ parent and child of vfork, that saved value could be corrupted.
+@@ -57,11 +47,6 @@ ENTRY (__vfork)
+ mov r7, ip
+ cfi_restore (r7)
+
+- /* Restore the old PID value in the parent. */
+- cmp r0, #0 /* If we are the parent... */
+- it ne
+- strne r3, NEGOFF_OFF1 (r2, PID_OFFSET) /* restore the saved PID. */
+-
+ cmn a1, #4096
+ it cc
+ RETINSTR(cc, lr)
+diff --git a/sysdeps/unix/sysv/linux/createthread.c b/sysdeps/unix/sysv/linux/createthread.c
+index 6d32cece48..ec86f50814 100644
+--- a/sysdeps/unix/sysv/linux/createthread.c
++++ b/sysdeps/unix/sysv/linux/createthread.c
+@@ -128,10 +128,10 @@ create_thread (struct pthread *pd, const struct pthread_attr *attr,
+ /* The operation failed. We have to kill the thread.
+ We let the normal cancellation mechanism do the work. */
+
++ pid_t pid = __getpid ();
+ INTERNAL_SYSCALL_DECL (err2);
+- (void) INTERNAL_SYSCALL (tgkill, err2, 3,
+- THREAD_GETMEM (THREAD_SELF, pid),
+- pd->tid, SIGCANCEL);
++ (void) INTERNAL_SYSCALL_CALL (tgkill, err2, pid, pd->tid,
++ SIGCANCEL);
+
+ return INTERNAL_SYSCALL_ERRNO (res, err);
+ }
+diff --git a/sysdeps/unix/sysv/linux/getpid.c b/sysdeps/unix/sysv/linux/getpid.c
+deleted file mode 100644
+index 1124549326..0000000000
+--- a/sysdeps/unix/sysv/linux/getpid.c
++++ /dev/null
+@@ -1,64 +0,0 @@
+-/* Copyright (C) 2003-2016 Free Software Foundation, Inc.
+- This file is part of the GNU C Library.
+- Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+-
+- The GNU C Library is free software; you can redistribute it and/or
+- modify it under the terms of the GNU Lesser General Public
+- License as published by the Free Software Foundation; either
+- version 2.1 of the License, or (at your option) any later version.
+-
+- The GNU C Library is distributed in the hope that it will be useful,
+- but WITHOUT ANY WARRANTY; without even the implied warranty of
+- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+- Lesser General Public License for more details.
+-
+- You should have received a copy of the GNU Lesser General Public
+- License along with the GNU C Library; if not, see
+- <http://www.gnu.org/licenses/>. */
+-
+-#include <unistd.h>
+-#include <tls.h>
+-#include <sysdep.h>
+-
+-
+-#if IS_IN (libc)
+-static inline __attribute__((always_inline)) pid_t really_getpid (pid_t oldval);
+-
+-static inline __attribute__((always_inline)) pid_t
+-really_getpid (pid_t oldval)
+-{
+- if (__glibc_likely (oldval == 0))
+- {
+- pid_t selftid = THREAD_GETMEM (THREAD_SELF, tid);
+- if (__glibc_likely (selftid != 0))
+- return selftid;
+- }
+-
+- INTERNAL_SYSCALL_DECL (err);
+- pid_t result = INTERNAL_SYSCALL (getpid, err, 0);
+-
+- /* We do not set the PID field in the TID here since we might be
+- called from a signal handler while the thread executes fork. */
+- if (oldval == 0)
+- THREAD_SETMEM (THREAD_SELF, tid, result);
+- return result;
+-}
+-#endif
+-
+-pid_t
+-__getpid (void)
+-{
+-#if !IS_IN (libc)
+- INTERNAL_SYSCALL_DECL (err);
+- pid_t result = INTERNAL_SYSCALL (getpid, err, 0);
+-#else
+- pid_t result = THREAD_GETMEM (THREAD_SELF, pid);
+- if (__glibc_unlikely (result <= 0))
+- result = really_getpid (result);
+-#endif
+- return result;
+-}
+-
+-libc_hidden_def (__getpid)
+-weak_alias (__getpid, getpid)
+-libc_hidden_def (getpid)
+diff --git a/sysdeps/unix/sysv/linux/hppa/clone.S b/sysdeps/unix/sysv/linux/hppa/clone.S
+index 3d037f1430..25fcd497f7 100644
+--- a/sysdeps/unix/sysv/linux/hppa/clone.S
++++ b/sysdeps/unix/sysv/linux/hppa/clone.S
+@@ -132,18 +132,6 @@ ENTRY(__clone)
+ ldwm -64(%sp), %r4
+
+ .LthreadStart:
+-# define CLONE_VM_BIT 23 /* 0x00000100 */
+- /* Load original clone flags.
+- If CLONE_VM was passed, don't modify PID/TID.
+- Otherwise store the result of getpid to PID/TID. */
+- ldw -56(%sp), %r26
+- bb,<,n %r26, CLONE_VM_BIT, 1f
+- ble 0x100(%sr2, %r0)
+- ldi __NR_getpid, %r20
+- mfctl %cr27, %r26
+- stw %ret0, PID_THREAD_OFFSET(%r26)
+- stw %ret0, TID_THREAD_OFFSET(%r26)
+-1:
+ /* Load up the arguments. */
+ ldw -60(%sp), %arg0
+ ldw -64(%sp), %r22
+diff --git a/sysdeps/unix/sysv/linux/hppa/pt-vfork.S b/sysdeps/unix/sysv/linux/hppa/pt-vfork.S
+index df532362d2..4684048502 100644
+--- a/sysdeps/unix/sysv/linux/hppa/pt-vfork.S
++++ b/sysdeps/unix/sysv/linux/hppa/pt-vfork.S
+@@ -25,26 +25,6 @@
+ replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
+ and the process ID of the new process to the old process. */
+
+-/* Load the thread register.
+- Load the saved PID value.
+- Negate the value.
+- Store the temporary PID. */
+-#define SAVE_PID \
+- mfctl %cr27, %r26 ASM_LINE_SEP \
+- ldw PID_THREAD_OFFSET(%r26),%r1 ASM_LINE_SEP \
+- sub %r0,%r1,%r1 ASM_LINE_SEP \
+- stw %r1,PID_THREAD_OFFSET(%r26) ASM_LINE_SEP
+-/* If we are the parent...
+- Get the thread pointer.
+- Load the saved PID.
+- Negate the value (got back original)
+- Restore the PID. */
+-#define RESTORE_PID \
+- cmpb,=,n %r0,%ret0,.Lthread_start ASM_LINE_SEP \
+- mfctl %cr27, %r26 ASM_LINE_SEP \
+- ldw PID_THREAD_OFFSET(%r26),%r1 ASM_LINE_SEP \
+- sub %r0,%r1,%r1 ASM_LINE_SEP \
+- stw %r1,PID_THREAD_OFFSET(%r26) ASM_LINE_SEP \
+ .Lthread_start: ASM_LINE_SEP
+
+ /* r26, r25, r24, r23 are free since vfork has no arguments */
+@@ -58,16 +38,10 @@ ENTRY(__vfork)
+ copy %r19, %r25 /* parent */
+ #endif
+
+- /* Save the process PID */
+- SAVE_PID
+-
+ /* Syscall saves and restores all register states */
+ ble 0x100(%sr2,%r0)
+ ldi __NR_vfork,%r20
+
+- /* Conditionally restore the PID */
+- RESTORE_PID
+-
+ /* Check for error */
+ ldi -4096,%r1
+ comclr,>>= %r1,%ret0,%r0 /* Note: unsigned compare. */
+diff --git a/sysdeps/unix/sysv/linux/i386/Makefile b/sysdeps/unix/sysv/linux/i386/Makefile
+index 71ba61e9d7..6073a9fe04 100644
+--- a/sysdeps/unix/sysv/linux/i386/Makefile
++++ b/sysdeps/unix/sysv/linux/i386/Makefile
+@@ -31,6 +31,7 @@ endif
+ # libpthread uses six-argument inline syscalls.
+ ifeq ($(subdir),nptl)
+ libpthread-sysdep_routines += libc-do-syscall
++libpthread-shared-only-routines += libc-do-syscall
+ endif
+
+ ifeq ($(subdir),resource)
+@@ -48,9 +49,11 @@ endif
+ ifeq ($(subdir),nptl)
+ # pull in __syscall_error routine
+ libpthread-routines += sysdep
++libpthread-shared-only-routines += sysdep
+ endif
+
+ ifeq ($(subdir),rt)
+ # pull in __syscall_error routine
+ librt-routines += sysdep
++librt-shared-only-routines += sysdep
+ endif
+diff --git a/sysdeps/unix/sysv/linux/i386/clone.S b/sysdeps/unix/sysv/linux/i386/clone.S
+index 25f2a9c340..feae504ce6 100644
+--- a/sysdeps/unix/sysv/linux/i386/clone.S
++++ b/sysdeps/unix/sysv/linux/i386/clone.S
+@@ -107,9 +107,6 @@ L(thread_start):
+ cfi_undefined (eip);
+ /* Note: %esi is zero. */
+ movl %esi,%ebp /* terminate the stack frame */
+- testl $CLONE_VM, %edi
+- je L(newpid)
+-L(haspid):
+ call *%ebx
+ #ifdef PIC
+ call L(here)
+@@ -121,18 +118,6 @@ L(here):
+ movl $SYS_ify(exit), %eax
+ ENTER_KERNEL
+
+- .subsection 2
+-L(newpid):
+- movl $SYS_ify(getpid), %eax
+- ENTER_KERNEL
+-L(nomoregetpid):
+- movl %eax, %gs:PID
+- movl %eax, %gs:TID
+- jmp L(haspid)
+- .previous
+- cfi_endproc;
+-
+- cfi_startproc
+ PSEUDO_END (__clone)
+
+ libc_hidden_def (__clone)
+diff --git a/sysdeps/unix/sysv/linux/i386/vfork.S b/sysdeps/unix/sysv/linux/i386/vfork.S
+index 7a1d3373bb..a865de2201 100644
+--- a/sysdeps/unix/sysv/linux/i386/vfork.S
++++ b/sysdeps/unix/sysv/linux/i386/vfork.S
+@@ -34,17 +34,6 @@ ENTRY (__vfork)
+ cfi_adjust_cfa_offset (-4)
+ cfi_register (%eip, %ecx)
+
+- /* Save the TCB-cached PID away in %edx, and then negate the TCB
+- field. But if it's zero, set it to 0x80000000 instead. See
+- raise.c for the logic that relies on this value. */
+- movl %gs:PID, %edx
+- movl %edx, %eax
+- negl %eax
+- jne 1f
+- movl $0x80000000, %eax
+-1: movl %eax, %gs:PID
+-
+-
+ /* Stuff the syscall number in EAX and enter into the kernel. */
+ movl $SYS_ify (vfork), %eax
+ int $0x80
+@@ -55,14 +44,6 @@ ENTRY (__vfork)
+ pushl %ecx
+ cfi_adjust_cfa_offset (4)
+
+- /* Restore the original value of the TCB cache of the PID, if we're
+- the parent. But in the child (syscall return value equals zero),
+- leave things as they are. */
+- testl %eax, %eax
+- je 1f
+- movl %edx, %gs:PID
+-1:
+-
+ cmpl $-4095, %eax
+ /* Branch forward if it failed. */
+ jae SYSCALL_ERROR_LABEL
+diff --git a/sysdeps/unix/sysv/linux/ia64/Makefile b/sysdeps/unix/sysv/linux/ia64/Makefile
+index 1de62c528a..4d6766db5e 100644
+--- a/sysdeps/unix/sysv/linux/ia64/Makefile
++++ b/sysdeps/unix/sysv/linux/ia64/Makefile
+@@ -19,6 +19,7 @@ endif
+
+ ifeq ($(subdir),rt)
+ librt-routines += rt-sysdep
++librt-shared-only-routines += rt-sysdep
+ endif
+
+ ifeq ($(subdir),nptl)
+diff --git a/sysdeps/unix/sysv/linux/ia64/clone2.S b/sysdeps/unix/sysv/linux/ia64/clone2.S
+index b4cfdfc959..e637b6d4a5 100644
+--- a/sysdeps/unix/sysv/linux/ia64/clone2.S
++++ b/sysdeps/unix/sysv/linux/ia64/clone2.S
+@@ -67,19 +67,7 @@ ENTRY(__clone2)
+ (CHILD) mov loc0=gp
+ (PARENT) ret
+ ;;
+- tbit.nz p6,p0=in3,8 /* CLONE_VM */
+-(p6) br.cond.dptk 1f
+- ;;
+- mov r15=SYS_ify (getpid)
+-(p7) break __BREAK_SYSCALL
+- ;;
+- add r9=PID,r13
+- add r10=TID,r13
+- ;;
+- st4 [r9]=r8
+- st4 [r10]=r8
+- ;;
+-1: ld8 out1=[in0],8 /* Retrieve code pointer. */
++ ld8 out1=[in0],8 /* Retrieve code pointer. */
+ mov out0=in4 /* Pass proper argument to fn */
+ ;;
+ ld8 gp=[in0] /* Load function gp. */
+diff --git a/sysdeps/unix/sysv/linux/ia64/vfork.S b/sysdeps/unix/sysv/linux/ia64/vfork.S
+index 9154d7c0fd..84bfdd5d8a 100644
+--- a/sysdeps/unix/sysv/linux/ia64/vfork.S
++++ b/sysdeps/unix/sysv/linux/ia64/vfork.S
+@@ -33,32 +33,12 @@ ENTRY (__libc_vfork)
+ .prologue // work around a GAS bug which triggers if
+ .body // first .prologue is not at the beginning of proc.
+ alloc r2=ar.pfs,0,0,2,0
+- adds r14=PID,r13
+- ;;
+- ld4 r16=[r14]
+- ;;
+- sub r15=0,r16
+- cmp.eq p6,p0=0,r16
+- ;;
+-(p6) movl r15=0x80000000
+ mov out0=CLONE_VM+CLONE_VFORK+SIGCHLD
+ mov out1=0 /* Standard sp value. */
+ ;;
+- st4 [r14]=r15
+ DO_CALL (SYS_ify (clone))
+ cmp.eq p6,p0=0,r8
+- adds r14=PID,r13
+ (p6) br.cond.dptk 1f
+- ;;
+- ld4 r15=[r14]
+- ;;
+- extr.u r16=r15,0,31
+- ;;
+- cmp.eq p0,p6=0,r16
+- ;;
+-(p6) sub r16=0,r15
+- ;;
+- st4 [r14]=r16
+ 1:
+ cmp.eq p6,p0=-1,r10
+ (p6) br.cond.spnt.few __syscall_error
+diff --git a/sysdeps/unix/sysv/linux/m68k/clone.S b/sysdeps/unix/sysv/linux/m68k/clone.S
+index 3a828443dc..630a29209d 100644
+--- a/sysdeps/unix/sysv/linux/m68k/clone.S
++++ b/sysdeps/unix/sysv/linux/m68k/clone.S
+@@ -98,19 +98,6 @@ ENTRY (__clone)
+ cfi_startproc
+ cfi_undefined (pc) /* Mark end of stack */
+ subl %fp, %fp /* terminate the stack frame */
+- /* Check and see if we need to reset the PID. */
+- andl #CLONE_VM, %d1
+- jne 1f
+- movel #SYS_ify (getpid), %d0
+- trap #0
+- movel %a0, -(%sp)
+- movel %d0, -(%sp)
+- bsrl __m68k_read_tp@PLTPC
+- movel (%sp)+, %d0
+- movel %d0, PID_OFFSET(%a0)
+- movel %d0, TID_OFFSET(%a0)
+- movel (%sp)+, %a0
+-1:
+ jsr (%a0)
+ movel %d0, %d1
+ movel #SYS_ify (exit), %d0
+diff --git a/sysdeps/unix/sysv/linux/m68k/vfork.S b/sysdeps/unix/sysv/linux/m68k/vfork.S
+index 1625a7b7a0..e27479361b 100644
+--- a/sysdeps/unix/sysv/linux/m68k/vfork.S
++++ b/sysdeps/unix/sysv/linux/m68k/vfork.S
+@@ -28,18 +28,6 @@
+
+ ENTRY (__vfork)
+
+- /* Save the TCB-cached PID away in %d1, and then negate the TCB
+- field. But if it's zero, set it to 0x80000000 instead. See
+- raise.c for the logic that relies on this value. */
+- jbsr __m68k_read_tp@PLTPC
+- movel %a0, %a1
+- movel PID_OFFSET(%a1), %d0
+- movel %d0, %d1
+- negl %d0
+- jne 1f
+- movel #0x80000000, %d0
+-1: movel %d0, PID_OFFSET(%a1)
+-
+ /* Pop the return PC value into A0. */
+ movel %sp@+, %a0
+ cfi_adjust_cfa_offset (-4)
+@@ -49,14 +37,6 @@ ENTRY (__vfork)
+ movel #SYS_ify (vfork), %d0
+ trap #0
+
+- /* Restore the original value of the TCB cache of the PID, if we're
+- the parent. But in the child (syscall return value equals zero),
+- leave things as they are. */
+- tstl %d0
+- jeq 1f
+- movel %d1, PID_OFFSET(%a1)
+-1:
+-
+ tstl %d0
+ jmi .Lerror /* Branch forward if it failed. */
+
+diff --git a/sysdeps/unix/sysv/linux/microblaze/Makefile b/sysdeps/unix/sysv/linux/microblaze/Makefile
+index 44a838fa11..d178bc6f34 100644
+--- a/sysdeps/unix/sysv/linux/microblaze/Makefile
++++ b/sysdeps/unix/sysv/linux/microblaze/Makefile
+@@ -5,4 +5,5 @@ endif
+ ifeq ($(subdir),nptl)
+ # pull in __syscall_error routine
+ libpthread-routines += sysdep
+-endif
+\ No newline at end of file
++libpthread-shared-only-routines += sysdep
++endif
+diff --git a/sysdeps/unix/sysv/linux/mips/clone.S b/sysdeps/unix/sysv/linux/mips/clone.S
+index 39634c5cf0..7ae65ef723 100644
+--- a/sysdeps/unix/sysv/linux/mips/clone.S
++++ b/sysdeps/unix/sysv/linux/mips/clone.S
+@@ -130,11 +130,6 @@ L(thread_start):
+ SAVE_GP (GPOFF)
+ /* The stackframe has been created on entry of clone(). */
+
+- /* Check and see if we need to reset the PID. */
+- and a1,a0,CLONE_VM
+- beqz a1,L(restore_pid)
+-L(donepid):
+-
+ /* Restore the arg for user's function. */
+ PTR_L t9,0(sp) /* Function pointer. */
+ PTR_L a0,PTRSIZE(sp) /* Argument pointer. */
+@@ -151,14 +146,6 @@ L(donepid):
+ jal _exit
+ #endif
+
+-L(restore_pid):
+- li v0,__NR_getpid
+- syscall
+- READ_THREAD_POINTER(v1)
+- INT_S v0,PID_OFFSET(v1)
+- INT_S v0,TID_OFFSET(v1)
+- b L(donepid)
+-
+ END(__thread_start)
+
+ libc_hidden_def (__clone)
+diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
+index 890a74494a..26ab6d0b75 100644
+--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
++++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list
+@@ -4,6 +4,8 @@ mmap - mmap b:aniiii __mmap mmap __mmap64 mmap64
+
+ sync_file_range - sync_file_range Ci:iiii sync_file_range
+
++readahead - readahead i:iii __readahead readahead
++
+ prlimit EXTRA prlimit64 i:iipp prlimit prlimit64
+
+ fanotify_mark EXTRA fanotify_mark i:iiiis fanotify_mark
+diff --git a/sysdeps/unix/sysv/linux/mips/vfork.S b/sysdeps/unix/sysv/linux/mips/vfork.S
+index 1867c8626e..0b9244b7f8 100644
+--- a/sysdeps/unix/sysv/linux/mips/vfork.S
++++ b/sysdeps/unix/sysv/linux/mips/vfork.S
+@@ -60,14 +60,6 @@ NESTED(__libc_vfork,FRAMESZ,sp)
+ PTR_ADDU sp, FRAMESZ
+ cfi_adjust_cfa_offset (-FRAMESZ)
+
+- /* Save the PID value. */
+- READ_THREAD_POINTER(v1) /* Get the thread pointer. */
+- lw a2, PID_OFFSET(v1) /* Load the saved PID. */
+- subu a2, $0, a2 /* Negate it. */
+- bnez a2, 1f /* If it was zero... */
+- lui a2, 0x8000 /* use 0x80000000 instead. */
+-1: sw a2, PID_OFFSET(v1) /* Store the temporary PID. */
+-
+ li a0, 0x4112 /* CLONE_VM | CLONE_VFORK | SIGCHLD */
+ move a1, sp
+
+@@ -75,17 +67,6 @@ NESTED(__libc_vfork,FRAMESZ,sp)
+ li v0,__NR_clone
+ syscall
+
+- /* Restore the old PID value in the parent. */
+- beqz v0, 1f /* If we are the parent... */
+- READ_THREAD_POINTER(v1) /* Get the thread pointer. */
+- lw a2, PID_OFFSET(v1) /* Load the saved PID. */
+- subu a2, $0, a2 /* Re-negate it. */
+- lui a0, 0x8000 /* Load 0x80000000... */
+- bne a2, a0, 2f /* ... compare against it... */
+- li a2, 0 /* ... use 0 instead. */
+-2: sw a2, PID_OFFSET(v1) /* Restore the PID. */
+-1:
+-
+ cfi_remember_state
+ bnez a3,L(error)
+
+diff --git a/sysdeps/unix/sysv/linux/nios2/clone.S b/sysdeps/unix/sysv/linux/nios2/clone.S
+index 30b6e4a6c8..c9fa00f94c 100644
+--- a/sysdeps/unix/sysv/linux/nios2/clone.S
++++ b/sysdeps/unix/sysv/linux/nios2/clone.S
+@@ -68,14 +68,6 @@ thread_start:
+ cfi_startproc
+ cfi_undefined (ra)
+
+- /* We expect the argument registers to be preserved across system
+- calls and across task cloning, so flags should be in r4 here. */
+- andi r2, r4, CLONE_VM
+- bne r2, zero, 2f
+- DO_CALL (getpid, 0)
+- stw r2, PID_OFFSET(r23)
+- stw r2, TID_OFFSET(r23)
+-2:
+ ldw r5, 4(sp) /* Function pointer. */
+ ldw r4, 0(sp) /* Argument pointer. */
+ addi sp, sp, 8
+diff --git a/sysdeps/unix/sysv/linux/nios2/vfork.S b/sysdeps/unix/sysv/linux/nios2/vfork.S
+index c1bb9c7134..8997269199 100644
+--- a/sysdeps/unix/sysv/linux/nios2/vfork.S
++++ b/sysdeps/unix/sysv/linux/nios2/vfork.S
+@@ -21,20 +21,10 @@
+
+ ENTRY(__vfork)
+
+- ldw r6, PID_OFFSET(r23)
+- sub r7, zero, r6
+- bne r7, zero, 2f
+- movhi r7, %hi(0x80000000)
+-2:
+- stw r7, PID_OFFSET(r23)
+-
+ movi r4, 0x4111 /* (CLONE_VM | CLONE_VFORK | SIGCHLD) */
+ mov r5, zero
+ DO_CALL (clone, 2)
+
+- beq r2, zero, 1f
+- stw r6, PID_OFFSET(r23)
+-1:
+ bne r7, zero, SYSCALL_ERROR_LABEL
+ ret
+
+diff --git a/sysdeps/unix/sysv/linux/powerpc/Makefile b/sysdeps/unix/sysv/linux/powerpc/Makefile
+index c89ed9ec7d..2cfb46eca3 100644
+--- a/sysdeps/unix/sysv/linux/powerpc/Makefile
++++ b/sysdeps/unix/sysv/linux/powerpc/Makefile
+@@ -8,6 +8,7 @@ abi-64-v2-condition := __WORDSIZE == 64 && _CALL_ELF == 2
+
+ ifeq ($(subdir),rt)
+ librt-routines += rt-sysdep
++librt-shared-only-routines += rt-sysdep
+ endif
+
+ ifeq ($(subdir),stdlib)
+@@ -34,4 +35,5 @@ ifeq ($(subdir),nptl)
+ libpthread-routines += sysdep
+ libpthread-sysdep_routines += elision-lock elision-unlock elision-timed \
+ elision-trylock
++libpthread-shared-only-routines += sysdep
+ endif
+diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-lock.c b/sysdeps/unix/sysv/linux/powerpc/elision-lock.c
+index dd1e4c3b17..7dd3d835b6 100644
+--- a/sysdeps/unix/sysv/linux/powerpc/elision-lock.c
++++ b/sysdeps/unix/sysv/linux/powerpc/elision-lock.c
+@@ -45,7 +45,9 @@
+ int
+ __lll_lock_elision (int *lock, short *adapt_count, EXTRAARG int pshared)
+ {
+- if (*adapt_count > 0)
++ /* adapt_count is accessed concurrently but is just a hint. Thus,
++ use atomic accesses but relaxed MO is sufficient. */
++ if (atomic_load_relaxed (adapt_count) > 0)
+ {
+ goto use_lock;
+ }
+@@ -67,7 +69,8 @@ __lll_lock_elision (int *lock, short *adapt_count, EXTRAARG int pshared)
+ if (_TEXASRU_FAILURE_PERSISTENT (__builtin_get_texasru ()))
+ {
+ if (aconf.skip_lock_internal_abort > 0)
+- *adapt_count = aconf.skip_lock_internal_abort;
++ atomic_store_relaxed (adapt_count,
++ aconf.skip_lock_internal_abort);
+ goto use_lock;
+ }
+ }
+@@ -75,7 +78,8 @@ __lll_lock_elision (int *lock, short *adapt_count, EXTRAARG int pshared)
+
+ /* Fall back to locks for a bit if retries have been exhausted */
+ if (aconf.try_tbegin > 0 && aconf.skip_lock_out_of_tbegin_retries > 0)
+- *adapt_count = aconf.skip_lock_out_of_tbegin_retries;
++ atomic_store_relaxed (adapt_count,
++ aconf.skip_lock_out_of_tbegin_retries);
+
+ use_lock:
+ return LLL_LOCK ((*lock), pshared);
+diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c b/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
+index 0807a6a432..606185670d 100644
+--- a/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
++++ b/sysdeps/unix/sysv/linux/powerpc/elision-trylock.c
+@@ -34,7 +34,7 @@ __lll_trylock_elision (int *futex, short *adapt_count)
+ __libc_tabort (_ABORT_NESTED_TRYLOCK);
+
+ /* Only try a transaction if it's worth it. */
+- if (*adapt_count > 0)
++ if (atomic_load_relaxed (adapt_count) > 0)
+ {
+ goto use_lock;
+ }
+@@ -49,7 +49,7 @@ __lll_trylock_elision (int *futex, short *adapt_count)
+ __libc_tend (0);
+
+ if (aconf.skip_lock_busy > 0)
+- *adapt_count = aconf.skip_lock_busy;
++ atomic_store_relaxed (adapt_count, aconf.skip_lock_busy);
+ }
+ else
+ {
+@@ -59,7 +59,8 @@ __lll_trylock_elision (int *futex, short *adapt_count)
+ result in another failure. Use normal locking now and
+ for the next couple of calls. */
+ if (aconf.skip_trylock_internal_abort > 0)
+- *adapt_count = aconf.skip_trylock_internal_abort;
++ atomic_store_relaxed (adapt_count,
++ aconf.skip_trylock_internal_abort);
+ }
+ }
+
+diff --git a/sysdeps/unix/sysv/linux/powerpc/elision-unlock.c b/sysdeps/unix/sysv/linux/powerpc/elision-unlock.c
+index 43c5a67df2..51d7018e4c 100644
+--- a/sysdeps/unix/sysv/linux/powerpc/elision-unlock.c
++++ b/sysdeps/unix/sysv/linux/powerpc/elision-unlock.c
+@@ -28,13 +28,16 @@ __lll_unlock_elision (int *lock, short *adapt_count, int pshared)
+ __libc_tend (0);
+ else
+ {
+- lll_unlock ((*lock), pshared);
++ /* Update adapt_count in the critical section to prevent a
++ write-after-destroy error as mentioned in BZ 20822. The
++ following update of adapt_count has to be contained within
++ the critical region of the fall-back lock in order to not violate
++ the mutex destruction requirements. */
++ short __tmp = atomic_load_relaxed (adapt_count);
++ if (__tmp > 0)
++ atomic_store_relaxed (adapt_count, __tmp - 1);
+
+- /* Update the adapt count AFTER completing the critical section.
+- Doing this here prevents unneeded stalling when entering
+- a critical section. Saving about 8% runtime on P8. */
+- if (*adapt_count > 0)
+- (*adapt_count)--;
++ lll_unlock ((*lock), pshared);
+ }
+ return 0;
+ }
+diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S b/sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S
+index bebadbfbb9..49fe01ecde 100644
+--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S
++++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S
+@@ -76,15 +76,6 @@ ENTRY (__clone)
+ crandc cr1*4+eq,cr1*4+eq,cr0*4+so
+ bne- cr1,L(parent) /* The '-' is to minimise the race. */
+
+- /* If CLONE_VM is set do not update the pid/tid field. */
+- andi. r0,r28,CLONE_VM
+- bne+ cr0,L(oldpid)
+-
+- DO_CALL(SYS_ify(getpid))
+- stw r3,TID(r2)
+- stw r3,PID(r2)
+-L(oldpid):
+-
+ /* Call procedure. */
+ mtctr r30
+ mr r3,r31
+diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S b/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S
+index edbc7de1e6..0a724953a4 100644
+--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S
++++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S
+@@ -27,34 +27,8 @@
+
+ ENTRY (__vfork)
+
+- /* Load the TCB-cached PID value and negates it. If It it is zero
+- sets it to 0x800000. And then sets its value again on TCB field.
+- See raise.c for the logic that relies on this value. */
+-
+- lwz r0,PID(r2)
+- cmpwi cr0,r0,0
+- neg r0,r0
+- bne- cr0,1f
+- lis r0,0x8000
+-1: stw r0,PID(r2)
+-
+ DO_CALL (SYS_ify (vfork))
+
+- cmpwi cr1,r3,0
+- beqlr- 1
+-
+- /* Restore the original value of the TCB cache of the PID, if we're
+- the parent. But in the child (syscall return value equals zero),
+- leave things as they are. */
+- lwz r0,PID(r2)
+- /* Cannot use clrlwi. here, because cr0 needs to be preserved
+- until PSEUDO_RET. */
+- clrlwi r4,r0,1
+- cmpwi cr1,r4,0
+- beq- cr1,1f
+- neg r4,r0
+-1: stw r4,PID(r2)
+-
+ PSEUDO_RET
+
+ PSEUDO_END (__vfork)
+diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S
+index 7c59b9b4e9..d8604f6731 100644
+--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S
++++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S
+@@ -78,15 +78,6 @@ ENTRY (__clone)
+ crandc cr1*4+eq,cr1*4+eq,cr0*4+so
+ bne- cr1,L(parent) /* The '-' is to minimise the race. */
+
+- /* If CLONE_VM is set do not update the pid/tid field. */
+- rldicl. r0,r29,56,63 /* flags & CLONE_VM. */
+- bne+ cr0,L(oldpid)
+-
+- DO_CALL(SYS_ify(getpid))
+- stw r3,TID(r13)
+- stw r3,PID(r13)
+-L(oldpid):
+-
+ std r2,FRAME_TOC_SAVE(r1)
+ /* Call procedure. */
+ PPC64_LOAD_FUNCPTR r30
+diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S b/sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S
+index 3083ab7b3c..6b4cf432c1 100644
+--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S
++++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S
+@@ -28,31 +28,8 @@
+ ENTRY (__vfork)
+ CALL_MCOUNT 0
+
+- /* Load the TCB-cached PID value and negates it. If It it is zero
+- sets it to 0x800000. And then sets its value again on TCB field.
+- See raise.c for the logic that relies on this value. */
+- lwz r0,PID(r13)
+- cmpwi cr0,r0,0
+- neg r0,r0
+- bne- cr0,1f
+- lis r0,0x8000
+-1: stw r0,PID(r13)
+-
+ DO_CALL (SYS_ify (vfork))
+
+- cmpwi cr1,r3,0
+- beqlr- 1
+-
+- /* Restore the original value of the TCB cache of the PID, if we're
+- the parent. But in the child (syscall return value equals zero),
+- leave things as they are. */
+- lwz r0,PID(r13)
+- clrlwi r4,r0,1
+- cmpwi cr1,r4,0
+- beq- cr1,1f
+- neg r4,r0
+-1: stw r4,PID(r13)
+-
+ PSEUDO_RET
+
+ PSEUDO_END (__vfork)
+diff --git a/sysdeps/unix/sysv/linux/pread.c b/sysdeps/unix/sysv/linux/pread.c
+index 1bcff64781..46d974d952 100644
+--- a/sysdeps/unix/sysv/linux/pread.c
++++ b/sysdeps/unix/sysv/linux/pread.c
+@@ -28,8 +28,7 @@
+ ssize_t
+ __libc_pread (int fd, void *buf, size_t count, off_t offset)
+ {
+- return SYSCALL_CANCEL (pread, fd, buf, count,
+- __ALIGNMENT_ARG SYSCALL_LL (offset));
++ return SYSCALL_CANCEL (pread, fd, buf, count, SYSCALL_LL_PRW (offset));
+ }
+
+ strong_alias (__libc_pread, __pread)
+diff --git a/sysdeps/unix/sysv/linux/pread64.c b/sysdeps/unix/sysv/linux/pread64.c
+index 58c6aeb541..f51beae77a 100644
+--- a/sysdeps/unix/sysv/linux/pread64.c
++++ b/sysdeps/unix/sysv/linux/pread64.c
+@@ -26,8 +26,7 @@
+ ssize_t
+ __libc_pread64 (int fd, void *buf, size_t count, off64_t offset)
+ {
+- return SYSCALL_CANCEL (pread64, fd, buf, count,
+- __ALIGNMENT_ARG SYSCALL_LL64 (offset));
++ return SYSCALL_CANCEL (pread64, fd, buf, count, SYSCALL_LL64_PRW (offset));
+ }
+
+ weak_alias (__libc_pread64, __pread64)
+diff --git a/sysdeps/unix/sysv/linux/pthread-pids.h b/sysdeps/unix/sysv/linux/pthread-pids.h
+index d42bba03cf..618a5b1b9f 100644
+--- a/sysdeps/unix/sysv/linux/pthread-pids.h
++++ b/sysdeps/unix/sysv/linux/pthread-pids.h
+@@ -26,5 +26,5 @@ static inline void
+ __pthread_initialize_pids (struct pthread *pd)
+ {
+ INTERNAL_SYSCALL_DECL (err);
+- pd->pid = pd->tid = INTERNAL_SYSCALL (set_tid_address, err, 1, &pd->tid);
++ pd->tid = INTERNAL_SYSCALL_CALL (set_tid_address, err, &pd->tid);
+ }
+diff --git a/sysdeps/unix/sysv/linux/pthread_kill.c b/sysdeps/unix/sysv/linux/pthread_kill.c
+index bcb3009675..cc109973cc 100644
+--- a/sysdeps/unix/sysv/linux/pthread_kill.c
++++ b/sysdeps/unix/sysv/linux/pthread_kill.c
+@@ -21,6 +21,7 @@
+ #include <pthreadP.h>
+ #include <tls.h>
+ #include <sysdep.h>
++#include <unistd.h>
+
+
+ int
+@@ -49,15 +50,9 @@ __pthread_kill (pthread_t threadid, int signo)
+ /* We have a special syscall to do the work. */
+ INTERNAL_SYSCALL_DECL (err);
+
+- /* One comment: The PID field in the TCB can temporarily be changed
+- (in fork). But this must not affect this code here. Since this
+- function would have to be called while the thread is executing
+- fork, it would have to happen in a signal handler. But this is
+- no allowed, pthread_kill is not guaranteed to be async-safe. */
+- int val;
+- val = INTERNAL_SYSCALL (tgkill, err, 3, THREAD_GETMEM (THREAD_SELF, pid),
+- tid, signo);
++ pid_t pid = __getpid ();
+
++ int val = INTERNAL_SYSCALL_CALL (tgkill, err, pid, tid, signo);
+ return (INTERNAL_SYSCALL_ERROR_P (val, err)
+ ? INTERNAL_SYSCALL_ERRNO (val, err) : 0);
+ }
+diff --git a/sysdeps/unix/sysv/linux/pthread_sigqueue.c b/sysdeps/unix/sysv/linux/pthread_sigqueue.c
+index 7694d5467c..e393e0bd73 100644
+--- a/sysdeps/unix/sysv/linux/pthread_sigqueue.c
++++ b/sysdeps/unix/sysv/linux/pthread_sigqueue.c
+@@ -49,27 +49,22 @@ pthread_sigqueue (pthread_t threadid, int signo, const union sigval value)
+ if (signo == SIGCANCEL || signo == SIGTIMER || signo == SIGSETXID)
+ return EINVAL;
+
++ pid_t pid = getpid ();
++
+ /* Set up the siginfo_t structure. */
+ siginfo_t info;
+ memset (&info, '\0', sizeof (siginfo_t));
+ info.si_signo = signo;
+ info.si_code = SI_QUEUE;
+- info.si_pid = THREAD_GETMEM (THREAD_SELF, pid);
++ info.si_pid = pid;
+ info.si_uid = getuid ();
+ info.si_value = value;
+
+ /* We have a special syscall to do the work. */
+ INTERNAL_SYSCALL_DECL (err);
+
+- /* One comment: The PID field in the TCB can temporarily be changed
+- (in fork). But this must not affect this code here. Since this
+- function would have to be called while the thread is executing
+- fork, it would have to happen in a signal handler. But this is
+- no allowed, pthread_sigqueue is not guaranteed to be async-safe. */
+- int val = INTERNAL_SYSCALL (rt_tgsigqueueinfo, err, 4,
+- THREAD_GETMEM (THREAD_SELF, pid),
+- tid, signo, &info);
+-
++ int val = INTERNAL_SYSCALL_CALL (rt_tgsigqueueinfo, err, pid, tid, signo,
++ &info);
+ return (INTERNAL_SYSCALL_ERROR_P (val, err)
+ ? INTERNAL_SYSCALL_ERRNO (val, err) : 0);
+ #else
+diff --git a/sysdeps/unix/sysv/linux/pwrite.c b/sysdeps/unix/sysv/linux/pwrite.c
+index 9c502beac1..1371df8a60 100644
+--- a/sysdeps/unix/sysv/linux/pwrite.c
++++ b/sysdeps/unix/sysv/linux/pwrite.c
+@@ -28,8 +28,7 @@
+ ssize_t
+ __libc_pwrite (int fd, const void *buf, size_t count, off_t offset)
+ {
+- return SYSCALL_CANCEL (pwrite, fd, buf, count,
+- __ALIGNMENT_ARG SYSCALL_LL (offset));
++ return SYSCALL_CANCEL (pwrite, fd, buf, count, SYSCALL_LL_PRW (offset));
+ }
+
+ strong_alias (__libc_pwrite, __pwrite)
+diff --git a/sysdeps/unix/sysv/linux/pwrite64.c b/sysdeps/unix/sysv/linux/pwrite64.c
+index b49e6bc286..22f1f05a44 100644
+--- a/sysdeps/unix/sysv/linux/pwrite64.c
++++ b/sysdeps/unix/sysv/linux/pwrite64.c
+@@ -26,8 +26,7 @@
+ ssize_t
+ __libc_pwrite64 (int fd, const void *buf, size_t count, off64_t offset)
+ {
+- return SYSCALL_CANCEL (pwrite64, fd, buf, count,
+- __ALIGNMENT_ARG SYSCALL_LL64 (offset));
++ return SYSCALL_CANCEL (pwrite64, fd, buf, count, SYSCALL_LL64_PRW (offset));
+ }
+ weak_alias (__libc_pwrite64, __pwrite64)
+ libc_hidden_weak (__pwrite64)
+diff --git a/sysdeps/unix/sysv/linux/raise.c b/sysdeps/unix/sysv/linux/raise.c
+index 470033e83d..49bb7cb0d4 100644
+--- a/sysdeps/unix/sysv/linux/raise.c
++++ b/sysdeps/unix/sysv/linux/raise.c
+@@ -26,13 +26,6 @@
+ int
+ raise (int sig)
+ {
+- /* raise is an async-safe function so it could be called while the
+- fork/vfork function temporarily invalidated the PID field. To avoid
+- relying on cached value we block all user-defined signal handler
+- (which might call fork/vfork) and issue the getpid and gettid
+- syscalls directly. */
+-
+-
+ /* rt_sigprocmask may fail if:
+
+ 1. sigsetsize != sizeof (sigset_t) (EINVAL)
+diff --git a/sysdeps/unix/sysv/linux/s390/Makefile b/sysdeps/unix/sysv/linux/s390/Makefile
+index 497ffd566c..f8ed013e9e 100644
+--- a/sysdeps/unix/sysv/linux/s390/Makefile
++++ b/sysdeps/unix/sysv/linux/s390/Makefile
+@@ -6,6 +6,7 @@ abi-64-condition := __WORDSIZE == 64
+
+ ifeq ($(subdir),rt)
+ librt-routines += rt-sysdep
++librt-shared-only-routines += rt-sysdep
+ endif
+
+ ifeq ($(subdir),stdlib)
+diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/clone.S b/sysdeps/unix/sysv/linux/s390/s390-32/clone.S
+index 2f8fa0b840..b1de1480d1 100644
+--- a/sysdeps/unix/sysv/linux/s390/s390-32/clone.S
++++ b/sysdeps/unix/sysv/linux/s390/s390-32/clone.S
+@@ -54,13 +54,6 @@ error:
+ PSEUDO_END (__clone)
+
+ thread_start:
+- tml %r3,256 /* CLONE_VM == 0x00000100 */
+- jne 1f
+- svc SYS_ify(getpid)
+- ear %r3,%a0
+- st %r2,PID(%r3)
+- st %r2,TID(%r3)
+-1:
+ /* fn is in gpr 1, arg in gpr 0 */
+ lr %r2,%r0 /* set first parameter to void *arg */
+ ahi %r15,-96 /* make room on the stack for the save area */
+diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S b/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S
+index b7588ebd7c..cc60e139ba 100644
+--- a/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S
++++ b/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S
+@@ -28,21 +28,9 @@
+ and the process ID of the new process to the old process. */
+
+ ENTRY (__libc_vfork)
+- ear %r4,%a0
+- lhi %r1,1
+- icm %r3,15,PID(%r4)
+- sll %r1,31
+- je 1f
+- lcr %r1,%r3
+-1: st %r1,PID(%r4)
+-
+ /* Do vfork system call. */
+ svc SYS_ify (vfork)
+
+- ltr %r2,%r2
+- je 1f
+- st %r3,PID(%r4)
+-1:
+ /* Check for error. */
+ lhi %r4,-4095
+ clr %r2,%r4
+diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/clone.S b/sysdeps/unix/sysv/linux/s390/s390-64/clone.S
+index fb816922ca..29606acf03 100644
+--- a/sysdeps/unix/sysv/linux/s390/s390-64/clone.S
++++ b/sysdeps/unix/sysv/linux/s390/s390-64/clone.S
+@@ -55,15 +55,6 @@ error:
+ PSEUDO_END (__clone)
+
+ thread_start:
+- tmll %r3,256 /* CLONE_VM == 0x00000100 */
+- jne 1f
+- svc SYS_ify(getpid)
+- ear %r3,%a0
+- sllg %r3,%r3,32
+- ear %r3,%a1
+- st %r2,PID(%r3)
+- st %r2,TID(%r3)
+-1:
+ /* fn is in gpr 1, arg in gpr 0 */
+ lgr %r2,%r0 /* set first parameter to void *arg */
+ aghi %r15,-160 /* make room on the stack for the save area */
+diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S b/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S
+index 0bd2161381..b9a813f2cc 100644
+--- a/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S
++++ b/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S
+@@ -28,22 +28,9 @@
+ and the process ID of the new process to the old process. */
+
+ ENTRY (__libc_vfork)
+- ear %r4,%a0
+- sllg %r4,%r4,32
+- ear %r4,%a1
+- icm %r3,15,PID(%r4)
+- llilh %r1,32768
+- je 1f
+- lcr %r1,%r3
+-1: st %r1,PID(%r4)
+-
+ /* Do vfork system call. */
+ svc SYS_ify (vfork)
+
+- ltgr %r2,%r2
+- je 1f
+- st %r3,PID(%r4)
+-1:
+ /* Check for error. */
+ lghi %r4,-4095
+ clgr %r2,%r4
+diff --git a/sysdeps/unix/sysv/linux/sh/clone.S b/sysdeps/unix/sysv/linux/sh/clone.S
+index 4cd7df117c..ce7cddcb19 100644
+--- a/sysdeps/unix/sysv/linux/sh/clone.S
++++ b/sysdeps/unix/sysv/linux/sh/clone.S
+@@ -66,23 +66,7 @@ ENTRY(__clone)
+ 2:
+ /* terminate the stack frame */
+ mov #0, r14
+- mov r4, r0
+- shlr8 r0
+- tst #1, r0 // CLONE_VM = (1 << 8)
+- bf/s 4f
+- mov r4, r0
+- /* new pid */
+- mov #+SYS_ify(getpid), r3
+- trapa #0x15
+-3:
+- stc gbr, r1
+- mov.w .Lpidoff, r2
+- add r1, r2
+- mov.l r0, @r2
+- mov.w .Ltidoff, r2
+- add r1, r2
+- mov.l r0, @r2
+-4:
++
+ /* thread starts */
+ mov.l @r15, r1
+ jsr @r1
+@@ -113,10 +97,6 @@ ENTRY(__clone)
+ .long _GLOBAL_OFFSET_TABLE_
+ .L3:
+ .long PLTJMP(C_SYMBOL_NAME(_exit))
+-.Lpidoff:
+- .word PID - TLS_PRE_TCB_SIZE
+-.Ltidoff:
+- .word TID - TLS_PRE_TCB_SIZE
+ PSEUDO_END (__clone)
+
+ libc_hidden_def (__clone)
+diff --git a/sysdeps/unix/sysv/linux/sh/kernel-features.h b/sysdeps/unix/sysv/linux/sh/kernel-features.h
+index ad05fc39e1..c5240fafbd 100644
+--- a/sysdeps/unix/sysv/linux/sh/kernel-features.h
++++ b/sysdeps/unix/sysv/linux/sh/kernel-features.h
+@@ -44,3 +44,8 @@
+
+ /* SH does not have a 64-bit inode field. */
+ #undef __ASSUME_ST_INO_64_BIT
++
++/* SH4 ABI does not really require argument alignment for 64-bits, but
++ the kernel interface for p{read,write}64 adds a dummy long argument
++ before the offset. */
++#define __ASSUME_PRW_DUMMY_ARG 1
+diff --git a/sysdeps/unix/sysv/linux/sh/pwrite.c b/sysdeps/unix/sysv/linux/sh/pwrite.c
+deleted file mode 100644
+index 391ed5e17b..0000000000
+--- a/sysdeps/unix/sysv/linux/sh/pwrite.c
++++ /dev/null
+@@ -1,23 +0,0 @@
+-/* Copyright (C) 1997-2016 Free Software Foundation, Inc.
+- This file is part of the GNU C Library.
+- Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+-
+- The GNU C Library is free software; you can redistribute it and/or
+- modify it under the terms of the GNU Lesser General Public
+- License as published by the Free Software Foundation; either
+- version 2.1 of the License, or (at your option) any later version.
+-
+- The GNU C Library is distributed in the hope that it will be useful,
+- but WITHOUT ANY WARRANTY; without even the implied warranty of
+- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+- Lesser General Public License for more details.
+-
+- You should have received a copy of the GNU Lesser General Public
+- License along with the GNU C Library; if not, see
+- <http://www.gnu.org/licenses/>. */
+-
+-/* SH4 ABI does not really require argument alignment for 64-bits, but
+- the kernel interface for pwrite adds a dummy long argument before the
+- offset. */
+-#define __ALIGNMENT_ARG
+-#include <sysdeps/unix/sysv/linux/pwrite.c>
+diff --git a/sysdeps/unix/sysv/linux/sh/vfork.S b/sysdeps/unix/sysv/linux/sh/vfork.S
+index 6895bc5491..df559cb439 100644
+--- a/sysdeps/unix/sysv/linux/sh/vfork.S
++++ b/sysdeps/unix/sysv/linux/sh/vfork.S
+@@ -26,30 +26,11 @@
+ and the process ID of the new process to the old process. */
+
+ ENTRY (__libc_vfork)
+- /* Save the PID value. */
+- stc gbr, r2
+- mov.w .L2, r0
+- mov.l @(r0,r2), r4
+- neg r4, r1
+- tst r1, r1
+- bf 1f
+- mov #1, r1
+- rotr r1
+-1:
+- mov.l r1, @(r0,r2)
+
+ mov.w .L1, r3
+ trapa #0x10
+ mov r0, r1
+
+- /* Restore the old PID value in the parent. */
+- tst r0, r0
+- bt.s 2f
+- stc gbr, r2
+- mov.w .L2, r0
+- mov.l r4, @(r0,r2)
+- mov r1, r0
+-2:
+ mov #-12, r2
+ shad r2, r1
+ not r1, r1 // r1=0 means r0 = -1 to -4095
+@@ -61,8 +42,6 @@ ENTRY (__libc_vfork)
+ nop
+ .L1:
+ .word __NR_vfork
+-.L2:
+- .word PID - TLS_PRE_TCB_SIZE
+ .align 2
+ PSEUDO_END (__libc_vfork)
+
+diff --git a/sysdeps/unix/sysv/linux/sparc/Makefile b/sysdeps/unix/sysv/linux/sparc/Makefile
+index e67aecf8f0..a67d199eb5 100644
+--- a/sysdeps/unix/sysv/linux/sparc/Makefile
++++ b/sysdeps/unix/sysv/linux/sparc/Makefile
+@@ -6,6 +6,7 @@ abi-64-condition := __WORDSIZE == 64
+
+ ifeq ($(subdir),rt)
+ librt-routines += rt-sysdep
++librt-shared-only-routines += rt-sysdep
+ endif
+
+ ifeq ($(subdir),sysvipc)
+@@ -15,4 +16,5 @@ endif
+ ifeq ($(subdir),nptl)
+ # pull in __syscall_error routine
+ libpthread-routines += sysdep
++libpthread-shared-only-routines += sysdep
+ endif
+diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/clone.S b/sysdeps/unix/sysv/linux/sparc/sparc32/clone.S
+index d6c92f6133..0456a0d16e 100644
+--- a/sysdeps/unix/sysv/linux/sparc/sparc32/clone.S
++++ b/sysdeps/unix/sysv/linux/sparc/sparc32/clone.S
+@@ -79,13 +79,6 @@ END(__clone)
+
+ .type __thread_start,@function
+ __thread_start:
+- andcc %g4, CLONE_VM, %g0
+- bne 1f
+- set __NR_getpid,%g1
+- ta 0x10
+- st %o0,[%g7 + PID]
+- st %o0,[%g7 + TID]
+-1:
+ mov %g0, %fp /* terminate backtrace */
+ call %g2
+ mov %g3,%o0
+diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S b/sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S
+index 0d0a3b5298..6d985034f0 100644
+--- a/sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S
++++ b/sysdeps/unix/sysv/linux/sparc/sparc32/vfork.S
+@@ -22,24 +22,14 @@
+ .text
+ .globl __syscall_error
+ ENTRY(__libc_vfork)
+- ld [%g7 + PID], %o5
+- cmp %o5, 0
+- bne 1f
+- sub %g0, %o5, %o4
+- sethi %hi(0x80000000), %o4
+-1: st %o4, [%g7 + PID]
+-
+ LOADSYSCALL(vfork)
+ ta 0x10
+ bcc 2f
+ mov %o7, %g1
+- st %o5, [%g7 + PID]
+ call __syscall_error
+ mov %g1, %o7
+ 2: sub %o1, 1, %o1
+ andcc %o0, %o1, %o0
+- bne,a 1f
+- st %o5, [%g7 + PID]
+ 1: retl
+ nop
+ END(__libc_vfork)
+diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S b/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S
+index b0f62660a7..6ffead88e2 100644
+--- a/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S
++++ b/sysdeps/unix/sysv/linux/sparc/sparc64/clone.S
+@@ -76,13 +76,6 @@ END(__clone)
+
+ .type __thread_start,@function
+ __thread_start:
+- andcc %g4, CLONE_VM, %g0
+- bne,pt %icc, 1f
+- set __NR_getpid,%g1
+- ta 0x6d
+- st %o0,[%g7 + PID]
+- st %o0,[%g7 + TID]
+-1:
+ mov %g0, %fp /* terminate backtrace */
+ call %g2
+ mov %g3,%o0
+diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S b/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S
+index 0818eba02e..298dd197a9 100644
+--- a/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S
++++ b/sysdeps/unix/sysv/linux/sparc/sparc64/vfork.S
+@@ -22,24 +22,14 @@
+ .text
+ .globl __syscall_error
+ ENTRY(__libc_vfork)
+- ld [%g7 + PID], %o5
+- sethi %hi(0x80000000), %o3
+- cmp %o5, 0
+- sub %g0, %o5, %o4
+- move %icc, %o3, %o4
+- st %o4, [%g7 + PID]
+-
+ LOADSYSCALL(vfork)
+ ta 0x6d
+ bcc,pt %xcc, 2f
+ mov %o7, %g1
+- st %o5, [%g7 + PID]
+ call __syscall_error
+ mov %g1, %o7
+ 2: sub %o1, 1, %o1
+ andcc %o0, %o1, %o0
+- bne,a,pt %icc, 1f
+- st %o5, [%g7 + PID]
+ 1: retl
+ nop
+ END(__libc_vfork)
+diff --git a/sysdeps/unix/sysv/linux/spawni.c b/sysdeps/unix/sysv/linux/spawni.c
+index bb3eecfde1..b5f20a710b 100644
+--- a/sysdeps/unix/sysv/linux/spawni.c
++++ b/sysdeps/unix/sysv/linux/spawni.c
+@@ -58,22 +58,19 @@
+ normal program exit with the exit code 127. */
+ #define SPAWN_ERROR 127
+
+-/* We need to block both SIGCANCEL and SIGSETXID. */
+-#define SIGALL_SET \
+- ((__sigset_t) { .__val = {[0 ... _SIGSET_NWORDS-1 ] = -1 } })
+-
+ #ifdef __ia64__
+-# define CLONE(__fn, __stack, __stacksize, __flags, __args) \
+- __clone2 (__fn, __stack, __stacksize, __flags, __args, 0, 0, 0)
++# define CLONE(__fn, __stackbase, __stacksize, __flags, __args) \
++ __clone2 (__fn, __stackbase, __stacksize, __flags, __args, 0, 0, 0)
+ #else
+ # define CLONE(__fn, __stack, __stacksize, __flags, __args) \
+ __clone (__fn, __stack, __flags, __args)
+ #endif
+
+-#if _STACK_GROWS_DOWN
+-# define STACK(__stack, __stack_size) (__stack + __stack_size)
+-#elif _STACK_GROWS_UP
++/* Since ia64 wants the stackbase w/clone2, re-use the grows-up macro. */
++#if _STACK_GROWS_UP || defined (__ia64__)
+ # define STACK(__stack, __stack_size) (__stack)
++#elif _STACK_GROWS_DOWN
++# define STACK(__stack, __stack_size) (__stack + __stack_size)
+ #endif
+
+
+@@ -329,6 +326,11 @@ __spawnix (pid_t * pid, const char *file,
+
+ /* Add a slack area for child's stack. */
+ size_t argv_size = (argc * sizeof (void *)) + 512;
++ /* We need at least a few pages in case the compiler's stack checking is
++ enabled. In some configs, it is known to use at least 24KiB. We use
++ 32KiB to be "safe" from anything the compiler might do. Besides, the
++ extra pages won't actually be allocated unless they get used. */
++ argv_size += (32 * 1024);
+ size_t stack_size = ALIGN_UP (argv_size, GLRO(dl_pagesize));
+ void *stack = __mmap (NULL, stack_size, prot,
+ MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0);
+@@ -340,7 +342,9 @@ __spawnix (pid_t * pid, const char *file,
+ }
+
+ /* Disable asynchronous cancellation. */
+- int cs = LIBC_CANCEL_ASYNC ();
++ int state;
++ __libc_ptf_call (__pthread_setcancelstate,
++ (PTHREAD_CANCEL_DISABLE, &state), 0);
+
+ args.file = file;
+ args.exec = exec;
+@@ -351,7 +355,7 @@ __spawnix (pid_t * pid, const char *file,
+ args.envp = envp;
+ args.xflags = xflags;
+
+- __sigprocmask (SIG_BLOCK, &SIGALL_SET, &args.oldmask);
++ __libc_signal_block_all (&args.oldmask);
+
+ /* The clone flags used will create a new child that will run in the same
+ memory space (CLONE_VM) and the execution of calling thread will be
+@@ -384,9 +388,9 @@ __spawnix (pid_t * pid, const char *file,
+ if ((ec == 0) && (pid != NULL))
+ *pid = new_pid;
+
+- __sigprocmask (SIG_SETMASK, &args.oldmask, 0);
++ __libc_signal_restore_set (&args.oldmask);
+
+- LIBC_CANCEL_RESET (cs);
++ __libc_ptf_call (__pthread_setcancelstate, (state, NULL), 0);
+
+ return ec;
+ }
+diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
+index 7ae2541f8f..248641b830 100644
+--- a/sysdeps/unix/sysv/linux/syscalls.list
++++ b/sysdeps/unix/sysv/linux/syscalls.list
+@@ -18,6 +18,7 @@ execve - execve i:spp __execve execve
+ fdatasync - fdatasync Ci:i fdatasync
+ flock - flock i:ii __flock flock
+ get_kernel_syms EXTRA get_kernel_syms i:p __compat_get_kernel_syms get_kernel_syms@GLIBC_2.0:GLIBC_2.23
++getpid - getpid Ei: __getpid getpid
+ getegid - getegid Ei: __getegid getegid
+ geteuid - geteuid Ei: __geteuid geteuid
+ getpgid - getpgid i:i __getpgid getpgid
+diff --git a/sysdeps/unix/sysv/linux/sysdep.h b/sysdeps/unix/sysv/linux/sysdep.h
+index a469f57121..e3ecd5638e 100644
+--- a/sysdeps/unix/sysv/linux/sysdep.h
++++ b/sysdeps/unix/sysv/linux/sysdep.h
+@@ -48,6 +48,16 @@
+ __LONG_LONG_PAIR ((long) ((val) >> 32), (long) ((val) & 0xffffffff))
+ #endif
+
++/* Provide a common macro to pass 64-bit value on pread and pwrite
++ syscalls. */
++#ifdef __ASSUME_PRW_DUMMY_ARG
++# define SYSCALL_LL_PRW(val) 0, SYSCALL_LL (val)
++# define SYSCALL_LL64_PRW(val) 0, SYSCALL_LL64 (val)
++#else
++# define SYSCALL_LL_PRW(val) __ALIGNMENT_ARG SYSCALL_LL (val)
++# define SYSCALL_LL64_PRW(val) __ALIGNMENT_ARG SYSCALL_LL64 (val)
++#endif
++
+ /* Provide a macro to pass the off{64}_t argument on p{readv,writev}{64}. */
+ #define LO_HI_LONG(val) \
+ (long) (val), \
+diff --git a/sysdeps/unix/sysv/linux/tile/Makefile b/sysdeps/unix/sysv/linux/tile/Makefile
+index 1c1cfff280..43acea3633 100644
+--- a/sysdeps/unix/sysv/linux/tile/Makefile
++++ b/sysdeps/unix/sysv/linux/tile/Makefile
+@@ -25,4 +25,5 @@ endif
+ ifeq ($(subdir),nptl)
+ # pull in __syscall_error routine
+ libpthread-routines += sysdep
++libpthread-shared-only-routines += sysdep
+ endif
+diff --git a/sysdeps/unix/sysv/linux/tile/clone.S b/sysdeps/unix/sysv/linux/tile/clone.S
+index d1d36462e7..3f9e3d56c4 100644
+--- a/sysdeps/unix/sysv/linux/tile/clone.S
++++ b/sysdeps/unix/sysv/linux/tile/clone.S
+@@ -163,22 +163,6 @@ ENTRY (__clone)
+ .Lthread_start:
+ cfi_def_cfa_offset (FRAME_SIZE)
+ cfi_undefined (lr)
+- /* Check and see if we need to reset the PID, which we do if
+- CLONE_VM isn't set, i.e. it's a fork-like clone with a new
+- address space. In that case we update the cached values
+- from the true system pid (retrieved via __NR_getpid syscall). */
+- moveli r0, CLONE_VM
+- and r0, r30, r0
+- BNEZ r0, .Lno_reset_pid /* CLONE_VM is set */
+- moveli TREG_SYSCALL_NR_NAME, __NR_getpid
+- swint1
+- ADDLI_PTR r2, tp, PID_OFFSET
+- {
+- ST4 r2, r0
+- ADDLI_PTR r2, tp, TID_OFFSET
+- }
+- ST4 r2, r0
+-.Lno_reset_pid:
+ {
+ /* Invoke user function with specified argument. */
+ move r0, r31
+diff --git a/sysdeps/unix/sysv/linux/tile/vfork.S b/sysdeps/unix/sysv/linux/tile/vfork.S
+index d8c5ce3e24..2272777187 100644
+--- a/sysdeps/unix/sysv/linux/tile/vfork.S
++++ b/sysdeps/unix/sysv/linux/tile/vfork.S
+@@ -30,18 +30,6 @@
+ .text
+ ENTRY (__vfork)
+ {
+- addli r11, tp, PID_OFFSET /* Point at PID. */
+- movei r13, 1
+- }
+- {
+- LD4U r12, r11 /* Load the saved PID. */
+- shli r13, r13, 31 /* Build 0x80000000. */
+- }
+- sub r12, zero, r12 /* Negate it. */
+- CMOVEQZ r12, r12, r13 /* Replace zero pids. */
+- ST4 r11, r12 /* Store the temporary PID. */
+-
+- {
+ moveli r0, CLONE_VFORK | CLONE_VM | SIGCHLD
+ move r1, zero
+ }
+@@ -52,22 +40,6 @@ ENTRY (__vfork)
+ moveli TREG_SYSCALL_NR_NAME, __NR_clone
+ swint1
+
+- BEQZ r0, 1f /* If we are the parent... */
+- {
+- addli r11, tp, PID_OFFSET /* Point at PID. */
+- movei r13, 1
+- }
+- {
+- LD4U r12, r11 /* Load the saved PID. */
+- shli r13, r13, 31 /* Build 0x80000000. */
+- }
+- {
+- CMPEQ r13, r12, r12 /* Test for that value. */
+- sub r12, zero, r12 /* Re-negate it. */
+- }
+- CMOVNEZ r12, r13, zero /* Replace zero pids. */
+- ST4 r11, r12 /* Restore the PID. */
+-1:
+ BNEZ r1, 0f
+ jrp lr
+ PSEUDO_END (__vfork)
+diff --git a/sysdeps/unix/sysv/linux/tst-clone2.c b/sysdeps/unix/sysv/linux/tst-clone2.c
+index 68a7e6d6e2..1472311947 100644
+--- a/sysdeps/unix/sysv/linux/tst-clone2.c
++++ b/sysdeps/unix/sysv/linux/tst-clone2.c
+@@ -28,8 +28,11 @@
+ #include <stdlib.h>
+ #include <sys/types.h>
+ #include <sys/wait.h>
++#include <sys/syscall.h>
+
+-#include <tls.h> /* for THREAD_* macros. */
++#include <stackinfo.h> /* For _STACK_GROWS_{UP,DOWN}. */
++
++#include <support/check.h>
+
+ static int sig;
+ static int pipefd[2];
+@@ -39,39 +42,35 @@ f (void *a)
+ {
+ close (pipefd[0]);
+
+- pid_t pid = THREAD_GETMEM (THREAD_SELF, pid);
+- pid_t tid = THREAD_GETMEM (THREAD_SELF, tid);
++ pid_t ppid = getppid ();
++ pid_t pid = getpid ();
++ pid_t tid = syscall (__NR_gettid);
+
+- while (write (pipefd[1], &pid, sizeof pid) < 0)
+- continue;
+- while (write (pipefd[1], &tid, sizeof tid) < 0)
+- continue;
++ if (write (pipefd[1], &ppid, sizeof ppid) != sizeof (ppid))
++ FAIL_EXIT1 ("write ppid failed\n");
++ if (write (pipefd[1], &pid, sizeof pid) != sizeof (pid))
++ FAIL_EXIT1 ("write pid failed\n");
++ if (write (pipefd[1], &tid, sizeof tid) != sizeof (tid))
++ FAIL_EXIT1 ("write tid failed\n");
+
+ return 0;
+ }
+
+
+ static int
+-clone_test (int clone_flags)
++do_test (void)
+ {
+ sig = SIGRTMIN;
+ sigset_t ss;
+ sigemptyset (&ss);
+ sigaddset (&ss, sig);
+ if (sigprocmask (SIG_BLOCK, &ss, NULL) != 0)
+- {
+- printf ("sigprocmask failed: %m\n");
+- return 1;
+- }
++ FAIL_EXIT1 ("sigprocmask failed: %m");
+
+ if (pipe2 (pipefd, O_CLOEXEC))
+- {
+- printf ("sigprocmask failed: %m\n");
+- return 1;
+- }
+-
+- pid_t ppid = getpid ();
++ FAIL_EXIT1 ("pipe failed: %m");
+
++ int clone_flags = 0;
+ #ifdef __ia64__
+ extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
+ size_t __child_stack_size, int __flags,
+@@ -88,61 +87,47 @@ clone_test (int clone_flags)
+ #error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
+ #endif
+ #endif
++
+ close (pipefd[1]);
+
+ if (p == -1)
++ FAIL_EXIT1("clone failed: %m");
++
++ pid_t ppid, pid, tid;
++ if (read (pipefd[0], &ppid, sizeof pid) != sizeof pid)
+ {
+- printf ("clone failed: %m\n");
+- return 1;
++ kill (p, SIGKILL);
++ FAIL_EXIT1 ("read ppid failed: %m");
+ }
+-
+- pid_t pid, tid;
+ if (read (pipefd[0], &pid, sizeof pid) != sizeof pid)
+ {
+- printf ("read pid failed: %m\n");
+ kill (p, SIGKILL);
+- return 1;
++ FAIL_EXIT1 ("read pid failed: %m");
+ }
+ if (read (pipefd[0], &tid, sizeof tid) != sizeof tid)
+ {
+- printf ("read pid failed: %m\n");
+ kill (p, SIGKILL);
+- return 1;
++ FAIL_EXIT1 ("read tid failed: %m");
+ }
+
+ close (pipefd[0]);
+
+ int ret = 0;
+
+- /* For CLONE_VM glibc clone implementation does not change the pthread
+- pid/tid field. */
+- if ((clone_flags & CLONE_VM) == CLONE_VM)
+- {
+- if ((ppid != pid) || (ppid != tid))
+- {
+- printf ("parent pid (%i) != received pid/tid (%i/%i)\n",
+- (int)ppid, (int)pid, (int)tid);
+- ret = 1;
+- }
+- }
+- /* For any other flag clone updates the new pthread pid and tid with
+- the clone return value. */
+- else
+- {
+- if ((p != pid) || (p != tid))
+- {
+- printf ("child pid (%i) != received pid/tid (%i/%i)\n",
+- (int)p, (int)pid, (int)tid);
+- ret = 1;
+- }
+- }
++ pid_t own_pid = getpid ();
++ pid_t own_tid = syscall (__NR_gettid);
++
++ /* Some sanity checks for clone syscall: returned ppid should be current
++ pid and both returned tid/pid should be different from current one. */
++ if ((ppid != own_pid) || (pid == own_pid) || (tid == own_tid))
++ FAIL_RET ("ppid=%i pid=%i tid=%i | own_pid=%i own_tid=%i",
++ (int)ppid, (int)pid, (int)tid, (int)own_pid, (int)own_tid);
+
+ int e;
+ if (waitpid (p, &e, __WCLONE) != p)
+ {
+- puts ("waitpid failed");
+ kill (p, SIGKILL);
+- return 1;
++ FAIL_EXIT1 ("waitpid failed");
+ }
+ if (!WIFEXITED (e))
+ {
+@@ -150,29 +135,12 @@ clone_test (int clone_flags)
+ printf ("died from signal %s\n", strsignal (WTERMSIG (e)));
+ else
+ puts ("did not terminate correctly");
+- return 1;
++ exit (EXIT_FAILURE);
+ }
+ if (WEXITSTATUS (e) != 0)
+- {
+- printf ("exit code %d\n", WEXITSTATUS (e));
+- return 1;
+- }
++ FAIL_EXIT1 ("exit code %d", WEXITSTATUS (e));
+
+ return ret;
+ }
+
+-int
+-do_test (void)
+-{
+- /* First, check that the clone implementation, without any flag, updates
+- the struct pthread to contain the new PID and TID. */
+- int ret = clone_test (0);
+- /* Second, check that with CLONE_VM the struct pthread PID and TID fields
+- remain unmodified after the clone. Any modifications would cause problem
+- for the parent as described in bug 19957. */
+- ret += clone_test (CLONE_VM);
+- return ret;
+-}
+-
+-#define TEST_FUNCTION do_test ()
+-#include "../test-skeleton.c"
++#include <support/test-driver.c>
+diff --git a/sysdeps/unix/sysv/linux/x86_64/clone.S b/sysdeps/unix/sysv/linux/x86_64/clone.S
+index 66f4b11490..5629aed395 100644
+--- a/sysdeps/unix/sysv/linux/x86_64/clone.S
++++ b/sysdeps/unix/sysv/linux/x86_64/clone.S
+@@ -91,14 +91,6 @@ L(thread_start):
+ the outermost frame obviously. */
+ xorl %ebp, %ebp
+
+- andq $CLONE_VM, %rdi
+- jne 1f
+- movl $SYS_ify(getpid), %eax
+- syscall
+- movl %eax, %fs:PID
+- movl %eax, %fs:TID
+-1:
+-
+ /* Set up arguments for the function call. */
+ popq %rax /* Function to call. */
+ popq %rdi /* Argument. */
+diff --git a/sysdeps/unix/sysv/linux/x86_64/vfork.S b/sysdeps/unix/sysv/linux/x86_64/vfork.S
+index 8332ade9fb..cdd2dea32a 100644
+--- a/sysdeps/unix/sysv/linux/x86_64/vfork.S
++++ b/sysdeps/unix/sysv/linux/x86_64/vfork.S
+@@ -34,16 +34,6 @@ ENTRY (__vfork)
+ cfi_adjust_cfa_offset(-8)
+ cfi_register(%rip, %rdi)
+
+- /* Save the TCB-cached PID away in %esi, and then negate the TCB
+- field. But if it's zero, set it to 0x80000000 instead. See
+- raise.c for the logic that relies on this value. */
+- movl %fs:PID, %esi
+- movl $0x80000000, %ecx
+- movl %esi, %edx
+- negl %edx
+- cmove %ecx, %edx
+- movl %edx, %fs:PID
+-
+ /* Stuff the syscall number in RAX and enter into the kernel. */
+ movl $SYS_ify (vfork), %eax
+ syscall
+@@ -52,14 +42,6 @@ ENTRY (__vfork)
+ pushq %rdi
+ cfi_adjust_cfa_offset(8)
+
+- /* Restore the original value of the TCB cache of the PID, if we're
+- the parent. But in the child (syscall return value equals zero),
+- leave things as they are. */
+- testq %rax, %rax
+- je 1f
+- movl %esi, %fs:PID
+-1:
+-
+ cmpl $-4095, %eax
+ jae SYSCALL_ERROR_LABEL /* Branch forward if it failed. */
+
+diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
+index 9ce4b495a5..d1ee922290 100644
+--- a/sysdeps/x86/cpu-features.c
++++ b/sysdeps/x86/cpu-features.c
+@@ -133,8 +133,6 @@ init_cpu_features (struct cpu_features *cpu_features)
+
+ case 0x57:
+ /* Knights Landing. Enable Silvermont optimizations. */
+- cpu_features->feature[index_arch_Prefer_No_VZEROUPPER]
+- |= bit_arch_Prefer_No_VZEROUPPER;
+
+ case 0x5c:
+ case 0x5f:
+@@ -205,6 +203,30 @@ init_cpu_features (struct cpu_features *cpu_features)
+ if (CPU_FEATURES_ARCH_P (cpu_features, AVX2_Usable))
+ cpu_features->feature[index_arch_AVX_Fast_Unaligned_Load]
+ |= bit_arch_AVX_Fast_Unaligned_Load;
++
++ /* Since AVX512ER is unique to Xeon Phi, set Prefer_No_VZEROUPPER
++ if AVX512ER is available. Don't use AVX512 to avoid lower CPU
++ frequency if AVX512ER isn't available. */
++ if (CPU_FEATURES_CPU_P (cpu_features, AVX512ER))
++ cpu_features->feature[index_arch_Prefer_No_VZEROUPPER]
++ |= bit_arch_Prefer_No_VZEROUPPER;
++ else
++ cpu_features->feature[index_arch_Prefer_No_AVX512]
++ |= bit_arch_Prefer_No_AVX512;
++
++ /* To avoid SSE transition penalty, use _dl_runtime_resolve_slow.
++ If XGETBV suports ECX == 1, use _dl_runtime_resolve_opt. */
++ cpu_features->feature[index_arch_Use_dl_runtime_resolve_slow]
++ |= bit_arch_Use_dl_runtime_resolve_slow;
++ if (cpu_features->max_cpuid >= 0xd)
++ {
++ unsigned int eax;
++
++ __cpuid_count (0xd, 1, eax, ebx, ecx, edx);
++ if ((eax & (1 << 2)) != 0)
++ cpu_features->feature[index_arch_Use_dl_runtime_resolve_opt]
++ |= bit_arch_Use_dl_runtime_resolve_opt;
++ }
+ }
+ /* This spells out "AuthenticAMD". */
+ else if (ebx == 0x68747541 && ecx == 0x444d4163 && edx == 0x69746e65)
+diff --git a/sysdeps/x86/cpu-features.h b/sysdeps/x86/cpu-features.h
+index 97ffe765f4..2609ac0999 100644
+--- a/sysdeps/x86/cpu-features.h
++++ b/sysdeps/x86/cpu-features.h
+@@ -37,6 +37,9 @@
+ #define bit_arch_Prefer_No_VZEROUPPER (1 << 17)
+ #define bit_arch_Fast_Unaligned_Copy (1 << 18)
+ #define bit_arch_Prefer_ERMS (1 << 19)
++#define bit_arch_Use_dl_runtime_resolve_opt (1 << 20)
++#define bit_arch_Use_dl_runtime_resolve_slow (1 << 21)
++#define bit_arch_Prefer_No_AVX512 (1 << 22)
+
+ /* CPUID Feature flags. */
+
+@@ -60,6 +63,11 @@
+ #define bit_cpu_AVX2 (1 << 5)
+ #define bit_cpu_AVX512F (1 << 16)
+ #define bit_cpu_AVX512DQ (1 << 17)
++#define bit_cpu_AVX512PF (1 << 26)
++#define bit_cpu_AVX512ER (1 << 27)
++#define bit_cpu_AVX512CD (1 << 28)
++#define bit_cpu_AVX512BW (1 << 30)
++#define bit_cpu_AVX512VL (1u << 31)
+
+ /* XCR0 Feature flags. */
+ #define bit_XMM_state (1 << 1)
+@@ -107,6 +115,9 @@
+ # define index_arch_Prefer_No_VZEROUPPER FEATURE_INDEX_1*FEATURE_SIZE
+ # define index_arch_Fast_Unaligned_Copy FEATURE_INDEX_1*FEATURE_SIZE
+ # define index_arch_Prefer_ERMS FEATURE_INDEX_1*FEATURE_SIZE
++# define index_arch_Use_dl_runtime_resolve_opt FEATURE_INDEX_1*FEATURE_SIZE
++# define index_arch_Use_dl_runtime_resolve_slow FEATURE_INDEX_1*FEATURE_SIZE
++# define index_arch_Prefer_No_AVX512 FEATURE_INDEX_1*FEATURE_SIZE
+
+
+ # if defined (_LIBC) && !IS_IN (nonlib)
+@@ -232,6 +243,11 @@ extern const struct cpu_features *__get_cpu_features (void)
+ # define index_cpu_AVX2 COMMON_CPUID_INDEX_7
+ # define index_cpu_AVX512F COMMON_CPUID_INDEX_7
+ # define index_cpu_AVX512DQ COMMON_CPUID_INDEX_7
++# define index_cpu_AVX512PF COMMON_CPUID_INDEX_7
++# define index_cpu_AVX512ER COMMON_CPUID_INDEX_7
++# define index_cpu_AVX512CD COMMON_CPUID_INDEX_7
++# define index_cpu_AVX512BW COMMON_CPUID_INDEX_7
++# define index_cpu_AVX512VL COMMON_CPUID_INDEX_7
+ # define index_cpu_ERMS COMMON_CPUID_INDEX_7
+ # define index_cpu_RTM COMMON_CPUID_INDEX_7
+ # define index_cpu_FMA COMMON_CPUID_INDEX_1
+@@ -250,6 +266,11 @@ extern const struct cpu_features *__get_cpu_features (void)
+ # define reg_AVX2 ebx
+ # define reg_AVX512F ebx
+ # define reg_AVX512DQ ebx
++# define reg_AVX512PF ebx
++# define reg_AVX512ER ebx
++# define reg_AVX512CD ebx
++# define reg_AVX512BW ebx
++# define reg_AVX512VL ebx
+ # define reg_ERMS ebx
+ # define reg_RTM ebx
+ # define reg_FMA ecx
+@@ -277,6 +298,9 @@ extern const struct cpu_features *__get_cpu_features (void)
+ # define index_arch_Prefer_No_VZEROUPPER FEATURE_INDEX_1
+ # define index_arch_Fast_Unaligned_Copy FEATURE_INDEX_1
+ # define index_arch_Prefer_ERMS FEATURE_INDEX_1
++# define index_arch_Use_dl_runtime_resolve_opt FEATURE_INDEX_1
++# define index_arch_Use_dl_runtime_resolve_slow FEATURE_INDEX_1
++# define index_arch_Prefer_No_AVX512 FEATURE_INDEX_1
+
+ #endif /* !__ASSEMBLER__ */
+
+diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h
+index ed0c1a8efd..c0f0fa16a2 100644
+--- a/sysdeps/x86_64/dl-machine.h
++++ b/sysdeps/x86_64/dl-machine.h
+@@ -68,7 +68,10 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
+ Elf64_Addr *got;
+ extern void _dl_runtime_resolve_sse (ElfW(Word)) attribute_hidden;
+ extern void _dl_runtime_resolve_avx (ElfW(Word)) attribute_hidden;
++ extern void _dl_runtime_resolve_avx_slow (ElfW(Word)) attribute_hidden;
++ extern void _dl_runtime_resolve_avx_opt (ElfW(Word)) attribute_hidden;
+ extern void _dl_runtime_resolve_avx512 (ElfW(Word)) attribute_hidden;
++ extern void _dl_runtime_resolve_avx512_opt (ElfW(Word)) attribute_hidden;
+ extern void _dl_runtime_profile_sse (ElfW(Word)) attribute_hidden;
+ extern void _dl_runtime_profile_avx (ElfW(Word)) attribute_hidden;
+ extern void _dl_runtime_profile_avx512 (ElfW(Word)) attribute_hidden;
+@@ -118,9 +121,26 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
+ indicated by the offset on the stack, and then jump to
+ the resolved address. */
+ if (HAS_ARCH_FEATURE (AVX512F_Usable))
+- *(ElfW(Addr) *) (got + 2) = (ElfW(Addr)) &_dl_runtime_resolve_avx512;
++ {
++ if (HAS_ARCH_FEATURE (Use_dl_runtime_resolve_opt))
++ *(ElfW(Addr) *) (got + 2)
++ = (ElfW(Addr)) &_dl_runtime_resolve_avx512_opt;
++ else
++ *(ElfW(Addr) *) (got + 2)
++ = (ElfW(Addr)) &_dl_runtime_resolve_avx512;
++ }
+ else if (HAS_ARCH_FEATURE (AVX_Usable))
+- *(ElfW(Addr) *) (got + 2) = (ElfW(Addr)) &_dl_runtime_resolve_avx;
++ {
++ if (HAS_ARCH_FEATURE (Use_dl_runtime_resolve_opt))
++ *(ElfW(Addr) *) (got + 2)
++ = (ElfW(Addr)) &_dl_runtime_resolve_avx_opt;
++ else if (HAS_ARCH_FEATURE (Use_dl_runtime_resolve_slow))
++ *(ElfW(Addr) *) (got + 2)
++ = (ElfW(Addr)) &_dl_runtime_resolve_avx_slow;
++ else
++ *(ElfW(Addr) *) (got + 2)
++ = (ElfW(Addr)) &_dl_runtime_resolve_avx;
++ }
+ else
+ *(ElfW(Addr) *) (got + 2) = (ElfW(Addr)) &_dl_runtime_resolve_sse;
+ }
+diff --git a/sysdeps/x86_64/dl-trampoline.S b/sysdeps/x86_64/dl-trampoline.S
+index 12f1a5cf84..50b23633e3 100644
+--- a/sysdeps/x86_64/dl-trampoline.S
++++ b/sysdeps/x86_64/dl-trampoline.S
+@@ -18,6 +18,7 @@
+
+ #include <config.h>
+ #include <sysdep.h>
++#include <cpu-features.h>
+ #include <link-defines.h>
+
+ #ifndef DL_STACK_ALIGNMENT
+@@ -104,9 +105,11 @@
+ #endif
+ #define VEC(i) ymm##i
+ #define _dl_runtime_resolve _dl_runtime_resolve_avx
++#define _dl_runtime_resolve_opt _dl_runtime_resolve_avx_opt
+ #define _dl_runtime_profile _dl_runtime_profile_avx
+ #include "dl-trampoline.h"
+ #undef _dl_runtime_resolve
++#undef _dl_runtime_resolve_opt
+ #undef _dl_runtime_profile
+ #undef VEC
+ #undef VMOV
+@@ -126,3 +129,19 @@
+ #define _dl_runtime_profile _dl_runtime_profile_sse
+ #undef RESTORE_AVX
+ #include "dl-trampoline.h"
++#undef _dl_runtime_resolve
++#undef _dl_runtime_profile
++#undef VMOV
++#undef VMOVA
++
++/* Used by _dl_runtime_resolve_avx_opt/_dl_runtime_resolve_avx512_opt
++ to preserve the full vector registers with zero upper bits. */
++#define VMOVA vmovdqa
++#if DL_RUNTIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT
++# define VMOV vmovdqa
++#else
++# define VMOV vmovdqu
++#endif
++#define _dl_runtime_resolve _dl_runtime_resolve_sse_vex
++#define _dl_runtime_resolve_opt _dl_runtime_resolve_avx512_opt
++#include "dl-trampoline.h"
+diff --git a/sysdeps/x86_64/dl-trampoline.h b/sysdeps/x86_64/dl-trampoline.h
+index b90836ab13..32ad3af202 100644
+--- a/sysdeps/x86_64/dl-trampoline.h
++++ b/sysdeps/x86_64/dl-trampoline.h
+@@ -50,6 +50,106 @@
+ #endif
+
+ .text
++#ifdef _dl_runtime_resolve_opt
++/* Use the smallest vector registers to preserve the full YMM/ZMM
++ registers to avoid SSE transition penalty. */
++
++# if VEC_SIZE == 32
++/* Check if the upper 128 bits in %ymm0 - %ymm7 registers are non-zero
++ and preserve %xmm0 - %xmm7 registers with the zero upper bits. Since
++ there is no SSE transition penalty on AVX512 processors which don't
++ support XGETBV with ECX == 1, _dl_runtime_resolve_avx512_slow isn't
++ provided. */
++ .globl _dl_runtime_resolve_avx_slow
++ .hidden _dl_runtime_resolve_avx_slow
++ .type _dl_runtime_resolve_avx_slow, @function
++ .align 16
++_dl_runtime_resolve_avx_slow:
++ cfi_startproc
++ cfi_adjust_cfa_offset(16) # Incorporate PLT
++ vorpd %ymm0, %ymm1, %ymm8
++ vorpd %ymm2, %ymm3, %ymm9
++ vorpd %ymm4, %ymm5, %ymm10
++ vorpd %ymm6, %ymm7, %ymm11
++ vorpd %ymm8, %ymm9, %ymm9
++ vorpd %ymm10, %ymm11, %ymm10
++ vpcmpeqd %xmm8, %xmm8, %xmm8
++ vorpd %ymm9, %ymm10, %ymm10
++ vptest %ymm10, %ymm8
++ # Preserve %ymm0 - %ymm7 registers if the upper 128 bits of any
++ # %ymm0 - %ymm7 registers aren't zero.
++ PRESERVE_BND_REGS_PREFIX
++ jnc _dl_runtime_resolve_avx
++ # Use vzeroupper to avoid SSE transition penalty.
++ vzeroupper
++ # Preserve %xmm0 - %xmm7 registers with the zero upper 128 bits
++ # when the upper 128 bits of %ymm0 - %ymm7 registers are zero.
++ PRESERVE_BND_REGS_PREFIX
++ jmp _dl_runtime_resolve_sse_vex
++ cfi_adjust_cfa_offset(-16) # Restore PLT adjustment
++ cfi_endproc
++ .size _dl_runtime_resolve_avx_slow, .-_dl_runtime_resolve_avx_slow
++# endif
++
++/* Use XGETBV with ECX == 1 to check which bits in vector registers are
++ non-zero and only preserve the non-zero lower bits with zero upper
++ bits. */
++ .globl _dl_runtime_resolve_opt
++ .hidden _dl_runtime_resolve_opt
++ .type _dl_runtime_resolve_opt, @function
++ .align 16
++_dl_runtime_resolve_opt:
++ cfi_startproc
++ cfi_adjust_cfa_offset(16) # Incorporate PLT
++ pushq %rax
++ cfi_adjust_cfa_offset(8)
++ cfi_rel_offset(%rax, 0)
++ pushq %rcx
++ cfi_adjust_cfa_offset(8)
++ cfi_rel_offset(%rcx, 0)
++ pushq %rdx
++ cfi_adjust_cfa_offset(8)
++ cfi_rel_offset(%rdx, 0)
++ movl $1, %ecx
++ xgetbv
++ movl %eax, %r11d
++ popq %rdx
++ cfi_adjust_cfa_offset(-8)
++ cfi_restore (%rdx)
++ popq %rcx
++ cfi_adjust_cfa_offset(-8)
++ cfi_restore (%rcx)
++ popq %rax
++ cfi_adjust_cfa_offset(-8)
++ cfi_restore (%rax)
++# if VEC_SIZE == 32
++ # For YMM registers, check if YMM state is in use.
++ andl $bit_YMM_state, %r11d
++ # Preserve %xmm0 - %xmm7 registers with the zero upper 128 bits if
++ # YMM state isn't in use.
++ PRESERVE_BND_REGS_PREFIX
++ jz _dl_runtime_resolve_sse_vex
++# elif VEC_SIZE == 16
++ # For ZMM registers, check if YMM state and ZMM state are in
++ # use.
++ andl $(bit_YMM_state | bit_ZMM0_15_state), %r11d
++ cmpl $bit_YMM_state, %r11d
++ # Preserve %zmm0 - %zmm7 registers if ZMM state is in use.
++ PRESERVE_BND_REGS_PREFIX
++ jg _dl_runtime_resolve_avx512
++ # Preserve %ymm0 - %ymm7 registers with the zero upper 256 bits if
++ # ZMM state isn't in use.
++ PRESERVE_BND_REGS_PREFIX
++ je _dl_runtime_resolve_avx
++ # Preserve %xmm0 - %xmm7 registers with the zero upper 384 bits if
++ # neither YMM state nor ZMM state are in use.
++# else
++# error Unsupported VEC_SIZE!
++# endif
++ cfi_adjust_cfa_offset(-16) # Restore PLT adjustment
++ cfi_endproc
++ .size _dl_runtime_resolve_opt, .-_dl_runtime_resolve_opt
++#endif
+ .globl _dl_runtime_resolve
+ .hidden _dl_runtime_resolve
+ .type _dl_runtime_resolve, @function
+@@ -162,7 +262,10 @@ _dl_runtime_resolve:
+ .size _dl_runtime_resolve, .-_dl_runtime_resolve
+
+
+-#ifndef PROF
++/* To preserve %xmm0 - %xmm7 registers, dl-trampoline.h is included
++ twice, for _dl_runtime_resolve_sse and _dl_runtime_resolve_sse_vex.
++ But we don't need another _dl_runtime_profile for XMM registers. */
++#if !defined PROF && defined _dl_runtime_profile
+ # if (LR_VECTOR_OFFSET % VEC_SIZE) != 0
+ # error LR_VECTOR_OFFSET must be multples of VEC_SIZE
+ # endif
+diff --git a/sysdeps/x86_64/memcpy_chk.S b/sysdeps/x86_64/memcpy_chk.S
+index 2296b55119..a95b3ad3cf 100644
+--- a/sysdeps/x86_64/memcpy_chk.S
++++ b/sysdeps/x86_64/memcpy_chk.S
+@@ -19,7 +19,7 @@
+ #include <sysdep.h>
+ #include "asm-syntax.h"
+
+-#ifndef PIC
++#ifndef SHARED
+ /* For libc.so this is defined in memcpy.S.
+ For libc.a, this is a separate source to avoid
+ memcpy bringing in __chk_fail and all routines
+diff --git a/sysdeps/x86_64/multiarch/memcpy.S b/sysdeps/x86_64/multiarch/memcpy.S
+index b8677596f9..ea4ec70d1a 100644
+--- a/sysdeps/x86_64/multiarch/memcpy.S
++++ b/sysdeps/x86_64/multiarch/memcpy.S
+@@ -32,6 +32,8 @@ ENTRY(__new_memcpy)
+ lea __memcpy_erms(%rip), %RAX_LP
+ HAS_ARCH_FEATURE (Prefer_ERMS)
+ jnz 2f
++ HAS_ARCH_FEATURE (Prefer_No_AVX512)
++ jnz 1f
+ HAS_ARCH_FEATURE (AVX512F_Usable)
+ jz 1f
+ lea __memcpy_avx512_no_vzeroupper(%rip), %RAX_LP
+diff --git a/sysdeps/x86_64/multiarch/memcpy_chk.S b/sysdeps/x86_64/multiarch/memcpy_chk.S
+index 9d92c8a7e3..26b49de6f6 100644
+--- a/sysdeps/x86_64/multiarch/memcpy_chk.S
++++ b/sysdeps/x86_64/multiarch/memcpy_chk.S
+@@ -30,6 +30,8 @@
+ ENTRY(__memcpy_chk)
+ .type __memcpy_chk, @gnu_indirect_function
+ LOAD_RTLD_GLOBAL_RO_RDX
++ HAS_ARCH_FEATURE (Prefer_No_AVX512)
++ jnz 1f
+ HAS_ARCH_FEATURE (AVX512F_Usable)
+ jz 1f
+ lea __memcpy_chk_avx512_no_vzeroupper(%rip), %RAX_LP
+diff --git a/sysdeps/x86_64/multiarch/memmove.S b/sysdeps/x86_64/multiarch/memmove.S
+index ff5e041420..ef92afde5a 100644
+--- a/sysdeps/x86_64/multiarch/memmove.S
++++ b/sysdeps/x86_64/multiarch/memmove.S
+@@ -30,6 +30,8 @@ ENTRY(__libc_memmove)
+ lea __memmove_erms(%rip), %RAX_LP
+ HAS_ARCH_FEATURE (Prefer_ERMS)
+ jnz 2f
++ HAS_ARCH_FEATURE (Prefer_No_AVX512)
++ jnz 1f
+ HAS_ARCH_FEATURE (AVX512F_Usable)
+ jz 1f
+ lea __memmove_avx512_no_vzeroupper(%rip), %RAX_LP
+diff --git a/sysdeps/x86_64/multiarch/memmove_chk.S b/sysdeps/x86_64/multiarch/memmove_chk.S
+index 7f861206df..a9129c460a 100644
+--- a/sysdeps/x86_64/multiarch/memmove_chk.S
++++ b/sysdeps/x86_64/multiarch/memmove_chk.S
+@@ -29,6 +29,8 @@
+ ENTRY(__memmove_chk)
+ .type __memmove_chk, @gnu_indirect_function
+ LOAD_RTLD_GLOBAL_RO_RDX
++ HAS_ARCH_FEATURE (Prefer_No_AVX512)
++ jnz 1f
+ HAS_ARCH_FEATURE (AVX512F_Usable)
+ jz 1f
+ lea __memmove_chk_avx512_no_vzeroupper(%rip), %RAX_LP
+diff --git a/sysdeps/x86_64/multiarch/mempcpy.S b/sysdeps/x86_64/multiarch/mempcpy.S
+index 51970687cf..87c8299fea 100644
+--- a/sysdeps/x86_64/multiarch/mempcpy.S
++++ b/sysdeps/x86_64/multiarch/mempcpy.S
+@@ -32,6 +32,8 @@ ENTRY(__mempcpy)
+ lea __mempcpy_erms(%rip), %RAX_LP
+ HAS_ARCH_FEATURE (Prefer_ERMS)
+ jnz 2f
++ HAS_ARCH_FEATURE (Prefer_No_AVX512)
++ jnz 1f
+ HAS_ARCH_FEATURE (AVX512F_Usable)
+ jz 1f
+ lea __mempcpy_avx512_no_vzeroupper(%rip), %RAX_LP
+diff --git a/sysdeps/x86_64/multiarch/mempcpy_chk.S b/sysdeps/x86_64/multiarch/mempcpy_chk.S
+index 9e49f6f26e..642c67973b 100644
+--- a/sysdeps/x86_64/multiarch/mempcpy_chk.S
++++ b/sysdeps/x86_64/multiarch/mempcpy_chk.S
+@@ -30,6 +30,8 @@
+ ENTRY(__mempcpy_chk)
+ .type __mempcpy_chk, @gnu_indirect_function
+ LOAD_RTLD_GLOBAL_RO_RDX
++ HAS_ARCH_FEATURE (Prefer_No_AVX512)
++ jnz 1f
+ HAS_ARCH_FEATURE (AVX512F_Usable)
+ jz 1f
+ lea __mempcpy_chk_avx512_no_vzeroupper(%rip), %RAX_LP
+diff --git a/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S
+index 28e71fd576..acf448c9a6 100644
+--- a/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S
++++ b/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S
+@@ -110,6 +110,8 @@ ENTRY (__memset_erms)
+ ENTRY (MEMSET_SYMBOL (__memset, erms))
+ # endif
+ L(stosb):
++ /* Issue vzeroupper before rep stosb. */
++ VZEROUPPER
+ movq %rdx, %rcx
+ movzbl %sil, %eax
+ movq %rdi, %rdx
+diff --git a/sysdeps/x86_64/multiarch/memset.S b/sysdeps/x86_64/multiarch/memset.S
+index 96e99341aa..eae39e2ecd 100644
+--- a/sysdeps/x86_64/multiarch/memset.S
++++ b/sysdeps/x86_64/multiarch/memset.S
+@@ -41,6 +41,8 @@ ENTRY(memset)
+ jnz L(AVX512F)
+ lea __memset_avx2_unaligned(%rip), %RAX_LP
+ L(AVX512F):
++ HAS_ARCH_FEATURE (Prefer_No_AVX512)
++ jnz 2f
+ HAS_ARCH_FEATURE (AVX512F_Usable)
+ jz 2f
+ lea __memset_avx512_no_vzeroupper(%rip), %RAX_LP
+diff --git a/sysdeps/x86_64/multiarch/memset_chk.S b/sysdeps/x86_64/multiarch/memset_chk.S
+index 2efe6ed909..38d7bef6df 100644
+--- a/sysdeps/x86_64/multiarch/memset_chk.S
++++ b/sysdeps/x86_64/multiarch/memset_chk.S
+@@ -38,6 +38,8 @@ ENTRY(__memset_chk)
+ jnz L(AVX512F)
+ lea __memset_chk_avx2_unaligned(%rip), %RAX_LP
+ L(AVX512F):
++ HAS_ARCH_FEATURE (Prefer_No_AVX512)
++ jnz 2f
+ HAS_ARCH_FEATURE (AVX512F_Usable)
+ jz 2f
+ lea __memset_chk_avx512_no_vzeroupper(%rip), %RAX_LP
+diff --git a/sysdeps/x86_64/nptl/tcb-offsets.sym b/sysdeps/x86_64/nptl/tcb-offsets.sym
+index aeb752673a..8a25c482cb 100644
+--- a/sysdeps/x86_64/nptl/tcb-offsets.sym
++++ b/sysdeps/x86_64/nptl/tcb-offsets.sym
+@@ -4,7 +4,6 @@
+
+ RESULT offsetof (struct pthread, result)
+ TID offsetof (struct pthread, tid)
+-PID offsetof (struct pthread, pid)
+ CANCELHANDLING offsetof (struct pthread, cancelhandling)
+ CLEANUP_JMP_BUF offsetof (struct pthread, cleanup_jmp_buf)
+ CLEANUP offsetof (struct pthread, cleanup)
+diff --git a/sysdeps/x86_64/sysdep.h b/sysdeps/x86_64/sysdep.h
+index 75ac747be8..4b67fa80c1 100644
+--- a/sysdeps/x86_64/sysdep.h
++++ b/sysdeps/x86_64/sysdep.h
+@@ -89,13 +89,14 @@ lose: \
+ END (name)
+
+ #undef JUMPTARGET
+-#ifdef PIC
++#ifdef SHARED
+ # ifdef BIND_NOW
+ # define JUMPTARGET(name) *name##@GOTPCREL(%rip)
+ # else
+ # define JUMPTARGET(name) name##@PLT
+ # endif
+ #else
++/* For static archives, branch to target directly. */
+ # define JUMPTARGET(name) name
+ #endif
+

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