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 grep -q "prefix=*" /proc/cmdline
39 if [ $? -eq 0 ]
40 then
41 for opt in `cat /proc/cmdline`
42 do
43 echo $opt | grep -q "prefix="
44 if [ $? -eq 0 ]
45 then
46 PREFIX=`echo $opt | cut -d= -f2`
47 fi
48 done
49 fi
50
51 MEDIAMNT=/media
52 mkdir -p ${MEDIAMNT}
53
54 echo -e " ${BOLD}${BLUE}*${NORM} Searching for the CRUX media..."
55 CRUXMEDIA=""
56 CDROM_DEVICES="`awk '/drive name:/ { for (i=3;i<=NF;i++) { printf("%s ", $i) } }' /proc/sys/dev/cdrom/info`"
57 BLOCK_DEVICES="`grep -E '[shv]d' /proc/partitions | awk '{ print $4 }'`"
58 for DEV in $CDROM_DEVICES $BLOCK_DEVICES
59 do
60 DEV="/dev/$DEV"
61 mount -r $DEV ${MEDIAMNT} 2> /dev/null
62 if [ $? -eq 0 ]
63 then
64 echo -e -n " ${BOLD}${GREEN}*${NORM} Found media on $DEV"
65 if [ -e ${MEDIAMNT}/${PREFIX}/crux-media ]
66 then
67 echo ", CRUX media."
68 CRUXMEDIA=$DEV
69 break
70 else
71 echo ", but it's not the CRUX media."
72 umount ${MEDIAMNT}
73 fi
74 else
75 echo -e " ${BOLD}${YELLOW}*${NORM} No media found on $DEV."
76 fi
77 done
78
79 # check if the media was mounted properly. if not, spawn a shell
80 if [ ! -e ${MEDIAMNT}/${PREFIX}/crux-media ]
81 then
82 echo -e " ${BOLD}${RED}*${NORM} The CRUX media was not properly mounted!"
83 echo " Spawning a shell for you to attempt to fix this problem. If"
84 echo " you are able to find the correct device, mount it at"
85 echo " ${MEDIAMNT} and then log out of this shell to continue."
86 echo " If you are NOT able to fix the problem, installation will"
87 echo " not be possible."
88 echo
89 /bin/sh
90 fi
91
92 # check again and stop if it's still not there
93 if [ ! -e ${MEDIAMNT}/${PREFIX}/crux-media ]
94 then
95 echo -e " ${BOLD}${RED}*${NORM} The CRUX media still appears not to be"
96 echo " found and installation will not continue."
97 echo
98 sleep 99999
99 exit 1
100 fi
101
102 echo -e " ${BOLD}${BLUE}*${NORM} Populating root filesystem..."
103 mkdir -p /newroot
104 echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting new root filesystem... "
105 mount -t tmpfs -o size=320m tmpfs /newroot
106 checkReturn
107 echo -e -n " ${BOLD}${BLUE}*${NORM} Copying files from rootfs.tar.xz... "
108 tar -xJf ${MEDIAMNT}/${PREFIX}/rootfs.tar.xz -C /newroot
109 checkReturn
110 echo -e -n " ${BOLD}${BLUE}*${NORM} Copying devices from rootfs... "
111 cp -af /dev/* /newroot/dev/
112 checkReturn
113 mkdir -p /newroot/dev/pts /newroot/media
114
115 # the media gets unmounted here and remounted after switch_root
116 umount ${MEDIAMNT}
117 rmdir ${MEDIAMNT}
118 sed -i -e "s,#CRUXMEDIA#,${CRUXMEDIA}," /newroot/etc/fstab
119 }
120
121 /bin/busybox --install -s /bin
122
123 # main script
124 echo ""
125 echo -e "${BOLD}CRUX 3.3 - ${BLUE}http://crux.nu/${NORM}"
126 echo ""
127
128 exec >/dev/console </dev/console 2>&1
129
130 echo -e -n " ${BOLD}${BLUE}*${NORM} Mounting "
131 echo -e -n "${BOLD}${GREEN}/proc${NORM}"
132 mount -t proc proc /proc
133
134 PRINTK="`cat /proc/sys/kernel/printk`"
135 echo "0" > /proc/sys/kernel/printk
136
137 echo -e ", ${BOLD}${GREEN}/sys${NORM}."
138 mount -t sysfs sysfs /sys
139
140 grep -q "debug" /proc/cmdline
141 if [ $? -eq 0 ]
142 then
143 DEBUG=1
144 fi
145
146 grep -q "dshell" /proc/cmdline
147 if [ $? -eq 0 ]
148 then
149 DSHELL=1
150 fi
151
152 echo -e -n " ${BOLD}${BLUE}*${NORM} Populating /dev via mdev... "
153 mdev -s
154 checkReturn
155 echo -e -n " ${BOLD}${BLUE}*${NORM} Registering mdev as hotplug agent... "
156 echo "/bin/mdev" > /proc/sys/kernel/hotplug
157 checkReturn
158
159 if [ -d /lib/modules ]
160 then
161 echo -e -n " ${BOLD}${BLUE}*${NORM} Loading modules... "
162
163 # filesystem
164 load_fs_modules() {
165 # no notification for fs modules since they're generic
166 #echo -e -n "${BOLD}${BLUE}File Systems${NORM}"
167 for mod in crc32c libcrc32c isofs ext2 ext4 reiserfs xfs jfs \
168 nls_cp437 nls_iso8859-1 vfat msdos btrfs
169 do
170 if [ ! -z "$DEBUG" ]
171 then
172 echo -n " $mod"
173 fi
174 modprobe $mod
175 done
176 #echo -n ", "
177 }
178
179 # cdrom
180 load_cdrom_modules() {
181 # no notification for cdrom modules since they're generic
182 #echo -e -n "${BOLD}${BLUE}CDROM${NORM}"
183 # there's only one cdrom module for now but the loop allows for adding
184 # more if ever needed
185 for mod in cdrom
186 do
187 if [ ! -z "$DEBUG" ]
188 then
189 echo -n " $mod"
190 fi
191 modprobe $mod
192 done
193 #echo -n ", "
194 }
195
196 # SCSI
197 load_scsi_modules() {
198 echo -e -n "${BOLD}${BLUE}SCSI${NORM}"
199 for mod in scsi_mod sr_mod sd_mod scsi_transport_fc scsi_transport_iscsi \
200 scsi_transport_sas scsi_transport_spi 3w-9xxx 3w-xxxx 53c700 BusLogic \
201 NCR53c406a a100u2w aacraid advansys aha152x aha1542 aha1740 aic79xx \
202 aic7xxx aic94xx arcmsr atp870u dc395x dmx3191d dpt_i2o dtc eata fdomain \
203 gdth hptiop in2000 initio ipr ips lpfc megaraid megaraid_mbox megaraid_sas \
204 nsp32 pas16 psi240i qla1280 qla2xxx qla4xxx qlogicfas qlogicfas408 seagate \
205 sim710 stex sym53c416 sym53c8xx t128 u14-34f ultrastor \
206 wd7000 mptsas mptspi hpsa hv_storvsc virtio_scsi vmw_pvscsi
207 do
208 if [ ! -z "$DEBUG" ]
209 then
210 echo -n " $mod"
211 fi
212 modprobe $mod > /dev/null 2>&1
213 done
214 echo -n ", "
215 }
216
217 # USB
218 load_usb_modules() {
219 echo -e -n "${BOLD}${BLUE}USB${NORM}"
220 for mod in usb-storage hid-generic hid-apple hid-logitech-dj
221 do
222 if [ ! -z "$DEBUG" ]
223 then
224 echo -n " $mod"
225 fi
226 modprobe $mod
227 done
228 echo -n ", "
229 }
230
231 # ATA
232 load_ata_modules() {
233 echo -e -n "${BOLD}${BLUE}ATA${NORM}"
234 for mod in libata libahci ahci sata_promise sata_sil sata_svw sata_via \
235 sata_mv sata_nv sata_sil24 sata_sx4 sata_sis sata_uli \
236 sata_vsc sata_qstor sata_inic162x ata_piix pata_mpiix \
237 pata_pdc2027x pata_radisys pata_sil680 pata_rz1000 pata_cmd640 \
238 pata_efar pata_cmd64x pata_hpt366 pata_hpt37x pata_hpt3x3 \
239 pata_opti pata_optidma pata_it8213 pata_ninja32 pata_it821x \
240 pata_artop pata_cypress pata_serverworks pata_ns87410 \
241 pata_ns87415 pata_ali pata_amd pdc_adma ata_generic \
242 pata_atiixp pata_triflex pata_netcell pata_sch pata_sis \
243 pata_hpt3x2n pata_marvell pata_jmicron pata_via pata_sl82c105
244 do
245 if [ ! -z "$DEBUG" ]
246 then
247 echo -n " $mod"
248 fi
249 modprobe $mod
250 done
251 echo -n ", "
252 }
253
254 # FireWire
255 load_firewire_modules() {
256 echo -e -n "${BOLD}${BLUE}FireWire${NORM}"
257 for mod in core ohci sbp2
258 do
259 if [ ! -z "$DEBUG" ]
260 then
261 echo -n " $mod"
262 fi
263 modprobe firewire-$mod
264 done
265 echo -n ", "
266 }
267
268 MODORDER="fs cdrom ata scsi usb firewire"
269
270 for MODS in $MODORDER
271 do
272 grep -q "no$MODS" /proc/cmdline
273 [ $? -ne 0 ] && load_${MODS}_modules
274 done
275
276 echoDone
277 else
278 echo -e " ${BOLD}${YELLOW}*${NORM} No modules were found in the initial RAM filesystem."
279 fi
280
281 grep -q "devicetimeout=*" /proc/cmdline
282 if [ $? -eq 0 ]
283 then
284 for opt in `cat /proc/cmdline`
285 do
286 echo $opt | grep -q "devicetimeout"
287 if [ $? -eq 0 ]
288 then
289 DEVTIMEOUT=`echo $opt | cut -d= -f2`
290 fi
291 done
292 else
293 DEVTIMEOUT=10
294 fi
295 echo -e " ${BOLD}${BLUE}*${NORM} Waiting $DEVTIMEOUT seconds for devices to settle..."
296 sleep $DEVTIMEOUT
297
298 # if root=/dev/XXX was specified on the command line, use that as the new root
299 # instead of searching for the media and using it. if it fails, fall back to
300 # the media
301 grep -q "root=/dev/*" /proc/cmdline
302 if [ $? -eq 0 ]
303 then
304 #echo "root= was specified"
305 for opt in `cat /proc/cmdline`
306 do
307 echo "$opt" | grep -q root=
308 if [ $? -eq 0 ]
309 then
310 ROOTDEV=`echo $opt | cut -d= -f2`
311 fi
312 done
313 mkdir -p /newroot
314 # check the specified root device to see if it has an init
315 mount $ROOTDEV /newroot
316 if [ $? -ne 0 ]
317 then
318 echo -e " ${BOLD}${RED}*${NORM} Unable to mount the specified root device! Falling back to the live media."
319 find_and_mount_media
320 else
321 if [ -x /newroot/sbin/init ]
322 then
323 echo -e " ${BOLD}${BLUE}*${NORM} Mounted root device $ROOTDEV."
324 else
325 echo -e " ${BOLD}${RED}*${NORM} The specified root device ($ROOTDEV) does not appear to be usable! Falling back to the live media."
326 umount /newroot
327 find_and_mount_media
328 fi
329 fi
330 else
331 find_and_mount_media
332 fi
333
334 # copy busybox for debugging
335 if [ ! -z "${DEBUG}" ]
336 then
337 cp /bin/busybox /newroot/bin/
338 fi
339
340 if [ ! -z "$DSHELL" ]
341 then
342 echo "Starting debug shell."
343 /bin/ash
344 fi
345
346 echo -e " ${BOLD}${BLUE}*${NORM} Switching root.\n"
347 echo "$PRINTK" > /proc/sys/kernel/printk
348 echo > /proc/sys/kernel/hotplug
349 umount /sys
350 umount /proc
351 exec /bin/switch_root /newroot /sbin/init
352
353 echo "Something's broken, here's a shell."
354 exec /bin/sh
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