1 #!/bin/sh
2
3 #
4 # initramfs /init (busybox ash)
5 #
6
7 # color codes and some predefined texts
8 BOLD="\033[1m"
9 NORM="\033[0m"
10 RED="\033[31m"
11 GREEN="\033[32m"
12 YELLOW="\033[33m"
13 BLUE="\033[34m"
14 OK="${BOLD}${GREEN}OK${NORM}"
15 FAILED="${BOLD}${RED}FAILED${NORM}"
16 DONE="${BOLD}${GREEN}DONE${NORM}"
17
18 # helper functions
19
20 # check an exit value and print a colored status
21 checkReturn() {
22 if [ $? -ne 0 ]
23 then
24 echo -e $FAILED
25 else
26 echo -e $OK
27 fi
28 }
29
30 # print a colored done status
31 echoDone() {
32 echo -e $DONE
33 }
34
35 # search for and mount the crux media, populate a tmpfs from it,
36 # and prepare /newroot for switch_root at the end of the script
37 find_and_mount_media() {
38 echo -e -n " ${BOLD}${BLUE}*${NORM} Creating and mounting tmpfs... "
39 mkdir /.tmpfs
40 mount -t tmpfs tmpfs /.tmpfs
41 checkReturn
42
43 grep -q "prefix=*" /proc/cmdline
44 if [ $? -eq 0 ]
45 then
46 for opt in `cat /proc/cmdline`
47 do
48 echo $opt | grep -q "prefix="
49 if [ $? -eq 0 ]
50 then
51 PREFIX=`echo $opt | cut -d= -f2`
52 fi
53 done
54 fi
55 MEDIAMNT=/.tmpfs/.media
56
57 echo -e " ${BOLD}${BLUE}*${NORM} Searching for the CRUX media..."
58 mkdir -p ${MEDIAMNT}
59 CRUXMEDIA=""
60 CDROM_DEVICES="`awk '/drive name:/ { for (i=3;i<=NF;i++) { printf("%s ", $i) } }' /proc/sys/dev/cdrom/info`"
61 BLOCK_DEVICES="`grep -E '[shv]d' /proc/partitions | awk '{ print $4 }'`"
62 for DEV in $CDROM_DEVICES $BLOCK_DEVICES
63 do
64 DEV="/dev/$DEV"
65 mount -r $DEV ${MEDIAMNT} 2> /dev/null
66 if [ $? -eq 0 ]
67 then
68 echo -e -n " ${BOLD}${GREEN}*${NORM} Found media on $DEV"
69 if [ -e ${MEDIAMNT}/${PREFIX}/crux-media ]
70 then
71 echo ", CRUX media."
72 CRUXMEDIA=$DEV
73 break
74 else
75 echo ", but it's not the CRUX media."
76 umount ${MEDIAMNT}
77 fi
78 else
79 echo -e " ${BOLD}${YELLOW}*${NORM} No media found on $DEV."
80 fi
81 done
82
83 # check if the media was mounted properly. if not, spawn a shell
84 if [ ! -e ${MEDIAMNT}/${PREFIX}/crux-media ]
85 then
86 echo -e " ${BOLD}${RED}*${NORM} The CRUX media was not properly mounted!"
87 echo " Spawning a shell for you to attempt to fix this problem. If"
88 echo " you are able to find the correct device, mount it at"
89 echo " ${MEDIAMNT} and then log out of this shell to continue."
90 echo " If you are NOT able to fix the problem, installation will"
91 echo " not be possible."
92 echo
93 /bin/sh
94 fi
95
96 # check again and stop if it's still not there
97 if [ ! -e ${MEDIAMNT}/${PREFIX}/crux-media ]
98 then
99 echo -e " ${BOLD}${RED}*${NORM} The CRUX media still appears not to be"
100 echo " found and installation will not continue."
101 echo
102 sleep 99999
103 exit 1
104 fi
105
106 echo -e " ${BOLD}${BLUE}*${NORM} Populating root filesystem..."
107 mkdir -p /newroot
108 echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting new root filesystem... "
109 mount -t tmpfs tmpfs /newroot
110 checkReturn
111 echo -e -n " ${BOLD}${BLUE}*${NORM} Copying files from rootfs.tar.xz... "
112 tar -xJf ${MEDIAMNT}/${PREFIX}/rootfs.tar.xz -C /newroot
113 checkReturn
114 echo -e -n " ${BOLD}${BLUE}*${NORM} Copying devices from rootfs... "
115 cp -af /dev/* /newroot/dev/
116 checkReturn
117 mkdir -p /newroot/dev/pts /newroot/media
118
119 # the media gets unmounted here and remounted after switch_root
120 umount ${MEDIAMNT}
121 rmdir ${MEDIAMNT}
122 sed -i -e "s,#CRUXMEDIA#,${CRUXMEDIA}," /newroot/etc/fstab
123
124 echo -e -n " ${BOLD}${BLUE}*${NORM} Unmounting tmpfs... "
125 umount /.tmpfs
126 checkReturn
127 rmdir /.tmpfs
128 }
129
130 /bin/busybox --install -s /bin
131
132 # main script
133 echo ""
134 echo -e "${BOLD}CRUX 3.2 - ${BLUE}http://crux.nu/${NORM}"
135 echo ""
136
137 exec >/dev/console </dev/console 2>&1
138
139 echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting "
140 echo -e -n "${BOLD}${GREEN}/proc${NORM}"
141 mount -t proc proc /proc
142
143 PRINTK="`cat /proc/sys/kernel/printk`"
144 echo "0" > /proc/sys/kernel/printk
145
146 echo -e ", ${BOLD}${GREEN}/sys${NORM}."
147 mount -t sysfs sysfs /sys
148
149 grep -q "debug" /proc/cmdline
150 if [ $? -eq 0 ]
151 then
152 DEBUG=1
153 fi
154
155 grep -q "dshell" /proc/cmdline
156 if [ $? -eq 0 ]
157 then
158 DSHELL=1
159 fi
160
161 if [ ! -z "$DSHELL" ]
162 then
163 echo "Starting debug shell."
164 /bin/ash
165 fi
166
167 echo -e -n " ${BOLD}${BLUE}*${NORM} Populating /dev via mdev... "
168 mdev -s
169 checkReturn
170 echo -e -n " ${BOLD}${BLUE}*${NORM} Registering mdev as hotplug agent... "
171 echo "/bin/mdev" > /proc/sys/kernel/hotplug
172 checkReturn
173
174 if [ -d /lib/modules ]
175 then
176 echo -e -n " ${BOLD}${BLUE}*${NORM} Loading modules... "
177
178 # filesystem
179 load_fs_modules() {
180 # no notification for fs modules since they're generic
181 #echo -e -n "${BOLD}${BLUE}File Systems${NORM}"
182 for mod in exportfs crc32c libcrc32c isofs ext2 ext3 ext4 reiserfs xfs jfs \
183 nls_cp437 nls_iso8859-1 vfat msdos btrfs
184 do
185 if [ ! -z "$DEBUG" ]
186 then
187 echo -n " $mod"
188 fi
189 modprobe $mod
190 done
191 #echo -n ", "
192 }
193
194 # cdrom
195 load_cdrom_modules() {
196 # no notification for cdrom modules since they're generic
197 #echo -e -n "${BOLD}${BLUE}CDROM${NORM}"
198 # there's only one cdrom module for now but the loop allows for adding
199 # more if ever needed
200 for mod in cdrom
201 do
202 if [ ! -z "$DEBUG" ]
203 then
204 echo -n " $mod"
205 fi
206 modprobe $mod
207 done
208 #echo -n ", "
209 }
210
211 # SCSI
212 load_scsi_modules() {
213 echo -e -n "${BOLD}${BLUE}SCSI${NORM}"
214 for mod in scsi_mod sr_mod sd_mod scsi_transport_fc scsi_transport_iscsi \
215 scsi_transport_sas scsi_transport_spi 3w-9xxx 3w-xxxx 53c700 BusLogic \
216 NCR53c406a a100u2w aacraid advansys aha152x aha1542 aha1740 aic79xx \
217 aic7xxx aic94xx arcmsr atp870u dc395x dmx3191d dpt_i2o dtc eata fdomain \
218 gdth hptiop in2000 initio ipr ips lpfc megaraid megaraid_mbox megaraid_sas \
219 nsp32 pas16 psi240i qla1280 qla2xxx qla4xxx qlogicfas qlogicfas408 seagate \
220 sim710 stex sym53c416 sym53c8xx t128 u14-34f ultrastor \
221 wd7000 mptsas mptspi hpsa hv_storvsc virtio_scsi vmw_pvscsi
222 do
223 if [ ! -z "$DEBUG" ]
224 then
225 echo -n " $mod"
226 fi
227 modprobe $mod > /dev/null 2>&1
228 done
229 echo -n ", "
230 }
231
232 # USB
233 load_usb_modules() {
234 echo -e -n "${BOLD}${BLUE}USB${NORM}"
235 for mod in usb-storage
236 do
237 if [ ! -z "$DEBUG" ]
238 then
239 echo -n " $mod"
240 fi
241 modprobe $mod
242 done
243 echo -n ", "
244 }
245
246 # ATA
247 load_ata_modules() {
248 echo -e -n "${BOLD}${BLUE}ATA${NORM}"
249 for mod in libata libahci ahci sata_promise sata_sil sata_svw sata_via \
250 sata_mv sata_nv sata_sil24 sata_sx4 sata_sis sata_uli \
251 sata_vsc sata_qstor sata_inic162x ata_piix pata_mpiix \
252 pata_pdc2027x pata_radisys pata_sil680 pata_rz1000 pata_cmd640 \
253 pata_efar pata_cmd64x pata_hpt366 pata_hpt37x pata_hpt3x3 \
254 pata_opti pata_optidma pata_it8213 pata_ninja32 pata_it821x \
255 pata_artop pata_cypress pata_serverworks pata_ns87410 \
256 pata_ns87415 pata_ali pata_amd pdc_adma ata_generic \
257 pata_atiixp pata_triflex pata_netcell pata_sch pata_sis \
258 pata_hpt3x2n pata_marvell pata_jmicron pata_via pata_sl82c105
259 do
260 if [ ! -z "$DEBUG" ]
261 then
262 echo -n " $mod"
263 fi
264 modprobe $mod
265 done
266 echo -n ", "
267 }
268
269 # FireWire
270 load_firewire_modules() {
271 echo -e -n "${BOLD}${BLUE}FireWire${NORM}"
272 for mod in core ohci sbp2
273 do
274 if [ ! -z "$DEBUG" ]
275 then
276 echo -n " $mod"
277 fi
278 modprobe firewire-$mod
279 done
280 echo -n ", "
281 }
282
283 MODORDER="fs cdrom ata scsi usb firewire"
284
285 for MODS in $MODORDER
286 do
287 grep -q "no$MODS" /proc/cmdline
288 [ $? -ne 0 ] && load_${MODS}_modules
289 done
290
291 echoDone
292 else
293 echo -e " ${BOLD}${YELLOW}*${NORM} No modules were found in the initial RAM filesystem."
294 fi
295
296 grep -q "devicetimeout=*" /proc/cmdline
297 if [ $? -eq 0 ]
298 then
299 for opt in `cat /proc/cmdline`
300 do
301 echo $opt | grep -q "devicetimeout"
302 if [ $? -eq 0 ]
303 then
304 DEVTIMEOUT=`echo $opt | cut -d= -f2`
305 fi
306 done
307 else
308 DEVTIMEOUT=10
309 fi
310 echo -e " ${BOLD}${BLUE}*${NORM} Waiting $DEVTIMEOUT seconds for devices to settle..."
311 sleep $DEVTIMEOUT
312
313 # if root=/dev/XXX was specified on the command line, use that as the new root
314 # instead of searching for the media and using it. if it fails, fall back to
315 # the media
316 grep -q "root=/dev/*" /proc/cmdline
317 if [ $? -eq 0 ]
318 then
319 #echo "root= was specified"
320 for opt in `cat /proc/cmdline`
321 do
322 echo "$opt" | grep -q root=
323 if [ $? -eq 0 ]
324 then
325 ROOTDEV=`echo $opt | cut -d= -f2`
326 fi
327 done
328 mkdir -p /newroot
329 # check the specified root device to see if it has an init
330 mount $ROOTDEV /newroot
331 if [ $? -ne 0 ]
332 then
333 echo -e " ${BOLD}${RED}*${NORM} Unable to mount the specified root device! Falling back to the live media."
334 find_and_mount_media
335 else
336 if [ -x /newroot/sbin/init ]
337 then
338 echo -e " ${BOLD}${BLUE}*${NORM} Mounted root device $ROOTDEV."
339 else
340 echo -e " ${BOLD}${RED}*${NORM} The specified root device ($ROOTDEV) does not appear to be usable! Falling back to the live media."
341 umount /newroot
342 find_and_mount_media
343 fi
344 fi
345 else
346 find_and_mount_media
347 fi
348
349 # copy busybox for debugging
350 if [ ! -z "${DEBUG}" ]
351 then
352 cp /bin/busybox /newroot/bin/
353 fi
354
355 echo -e " ${BOLD}${BLUE}*${NORM} Switching root.\n"
356 echo "$PRINTK" > /proc/sys/kernel/printk
357 echo > /proc/sys/kernel/hotplug
358 umount /sys
359 umount /proc
360 exec /bin/switch_root /newroot /sbin/init
361
362 echo "Something's broken, here's a shell."
363 exec /bin/sh
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