adaab62cb725657ccf04063350ce5dd0147f2ed1
[proj/genkernel.git] / defaults / linuxrc
1 #!/bin/sh
2
3 . /etc/initrd.defaults
4 . /etc/initrd.scripts
5
6 splash() {
7         return 0
8 }
9
10 [ -e /etc/initrd.splash ] && . /etc/initrd.splash
11
12 # Clean input/output
13 exec >${CONSOLE} <${CONSOLE} 2>&1
14
15 if [ "$$" != '1' ]
16 then
17         echo '/linuxrc has to be run as the init process as the one'
18         echo 'with a PID of 1. Try adding init="/linuxrc" to the'
19         echo 'kernel command line or running "exec /linuxrc".'
20         exit 1
21 fi
22
23 mount -t proc proc /proc >/dev/null 2>&1
24 mount -o remount,rw / >/dev/null 2>&1
25
26 # Set up symlinks
27 /bin/busybox --install -s
28
29 if [ "$0" = '/init' ]
30 then
31         [ -e /linuxrc ] && rm /linuxrc
32          
33         if [ -e /bin/lvm ]
34         then
35                 ln -s /bin/lvm /bin/vgscan
36                 ln -s /bin/lvm /bin/vgchange
37         fi
38 fi
39
40 quiet_kmsg
41
42 CMDLINE=`cat /proc/cmdline`
43 # Scan CMDLINE for any specified real_root= or cdroot arguments
44 FAKE_ROOT=''
45 REAL_ROOTFLAGS=''
46 CRYPT_SILENT=0
47 for x in ${CMDLINE}
48 do
49         case "${x}" in
50                 real_root\=*)
51                         REAL_ROOT=`parse_opt "${x}"`
52                 ;;
53                 root\=*)
54                         FAKE_ROOT=`parse_opt "${x}"`
55                 ;;
56                 subdir\=*)
57                         SUBDIR=`parse_opt "${x}"`
58                 ;;
59                 real_init\=*)
60                         REAL_INIT=`parse_opt "${x}"`
61                 ;;
62                 init_opts\=*)
63                         INIT_OPTS=`parse_opt "${x}"`
64                 ;;
65                 # Livecd options
66                 cdroot)
67                         CDROOT=1
68                 ;;
69                 cdroot\=*)
70                         CDROOT=1
71                         CDROOT_DEV=`parse_opt "${x}"`
72                 ;;
73                 cdroot_type\=*)
74                         CDROOT_TYPE=`parse_opt "${x}"`
75                 ;;
76                 # Start livecd loop, looptype options
77                 loop\=*)
78                         LOOP=`parse_opt "${x}"`
79                 ;;
80                 looptype\=*)
81                         LOOPTYPE=`parse_opt "${x}"`
82                 ;;
83                 isoboot\=*)
84                         ISOBOOT=`parse_opt "${x}"`
85                 ;;
86                 # Start Volume manager options 
87                 dolvm)
88                         USE_LVM_NORMAL=1
89                 ;;
90                 dolvm2)
91                         bad_msg 'Using dolvm2 is deprecated, use dolvm, instead.'
92                         USE_LVM_NORMAL=1
93                 ;;
94                 domdadm)
95                         USE_MDADM=1
96                 ;;
97                 dodmraid)
98                         USE_DMRAID_NORMAL=1
99                 ;;
100                 dodmraid\=*)
101                         DMRAID_OPTS=`parse_opt "${x}"`
102                         USE_DMRAID_NORMAL=1
103                 ;;
104                 doevms)
105                         USE_EVMS_NORMAL=1
106                 ;;
107                 doevms2)
108                         bad_msg 'Using doevms2 is deprecated, use doevms, instead.'
109                         USE_EVMS_NORMAL=1
110                 ;;
111                 # Debug Options
112                 debug)
113                         DEBUG='yes'
114                 ;;
115                 # Scan delay options 
116                 scandelay\=*)
117                         SDELAY=`parse_opt "${x}"`
118                 ;;
119                 scandelay)
120                         SDELAY=10
121                 ;;
122                 # Module no-loads
123                 doload\=*)
124                         MDOLIST=`parse_opt "${x}"`
125                         MDOLIST="`echo ${MDOLIST} | sed -e 's/,/ /g'`"
126                 ;;
127                 nodetect)
128                         NODETECT=1
129                 ;;
130                 noload\=*)
131                         MLIST=`parse_opt "${x}"`
132                         MLIST="`echo ${MLIST} | sed -e 's/,/ /g'`"
133                         export MLIST
134                 ;;
135                 # Redirect output to a specific tty
136                 CONSOLE\=*|console\=*)
137                         CONSOLE=`parse_opt "${x}"`
138 #                       exec >${CONSOLE} <${CONSOLE} 2>&1
139                 ;;
140                 # /dev/md
141                 lvmraid\=*)
142                         RAID_DEVICES="`parse_opt ${x}`"
143                         RAID_DEVICES="`echo ${RAID_DEVICES} | sed -e 's/,/ /g'`"
144                 ;;
145                 part\=*)
146                         MDPART=`parse_opt "${x}"`
147                 ;;
148                 # NFS
149                 ip\=*)
150                         IP=`parse_opt "${x}"`
151                 ;;
152                 nfsroot\=*)
153                         NFSROOT=`parse_opt "${x}"`
154                 ;;
155                 # iSCSI
156                 iscsi_initiatorname\=*)
157                         ISCSI_INITIATORNAME=`parse_opt "${x}"`
158                 ;;
159                 iscsi_target\=*)
160                         ISCSI_TARGET=`parse_opt "${x}"`
161                 ;;
162                 iscsi_tgpt\=*)
163                         ISCSI_TGPT=`parse_opt "${x}"`
164                 ;;
165                 iscsi_address\=*)
166                         ISCSI_ADDRESS=`parse_opt "${x}"`
167                 ;;
168                 iscsi_port\=*)
169                         ISCSI_PORT=`parse_opt "${x}"`
170                 ;;
171                 iscsi_username\=*)
172                         ISCSI_USERNAME=`parse_opt "${x}"`
173                 ;;
174                 iscsi_password\=*)
175                         ISCSI_PASSWORD=`parse_opt "${x}"`
176                 ;;
177                 iscsi_username_in\=*)
178                         ISCSI_USERNAME_IN=`parse_opt "${x}"`
179                 ;;
180                 iscsi_password_in\=*)
181                         ISCSI_PASSWORD_IN=`parse_opt "${x}"`
182                 ;;
183                 iscsi_debug\=*)
184                         ISCSI_DEBUG=`parse_opt "${x}"`
185                 ;;
186                 # Crypto
187                 crypt_root\=*)
188                         CRYPT_ROOT=`parse_opt "${x}"`
189                 ;;
190                 crypt_swap\=*)
191                         CRYPT_SWAP=`parse_opt "${x}"`
192                 ;;
193                 root_key\=*)
194                         CRYPT_ROOT_KEY=`parse_opt "${x}"`
195                 ;;
196                 root_keydev\=*)
197                         CRYPT_ROOT_KEYDEV=`parse_opt "${x}"`
198                 ;;
199                 swap_key\=*)
200                         CRYPT_SWAP_KEY=`parse_opt "${x}"`
201                 ;;
202                 swap_keydev\=*)
203                         CRYPT_SWAP_KEYDEV=`parse_opt "${x}"`
204                 ;;
205                 real_resume\=*|resume\=*)
206                         REAL_RESUME=`parse_opt "${x}"`
207                 ;;
208                 noresume)
209                         NORESUME=1
210                 ;;
211                 crypt_silent)
212                         CRYPT_SILENT=1
213                 ;;
214                 real_rootflags\=*)
215                         REAL_ROOTFLAGS=`parse_opt "${x}"`
216                 ;;
217                 keymap\=*)
218                         keymap=`parse_opt "${x}"`
219                 ;;
220                 unionfs)
221                         if [ ! -x /sbin/unionfs ]
222                         then
223                                 USE_UNIONFS_NORMAL=0
224                                 bad_msg 'unionfs binary not found: aborting use of unionfs!'
225                         else
226                                 USE_UNIONFS_NORMAL=1
227                         fi
228                         ;;
229                 nounionfs)
230                         USE_UNIONFS_NORMAL=0
231                         ;;
232 #                 unionfs\=*)    
233 #                         if [ ! -x /sbin/unionfs ]      
234 #                         then   
235 #                                 USE_UNIONFS_NORMAL=0   
236 #                                 bad_msg 'unionfs binary not found: aborting use of unionfs!'
237 #                         else   
238 #                                 USE_UNIONFS_NORMAL=1   
239 #                                 CMD_UNIONFS=`parse_opt "${x}"`         
240 #                                 echo ${CMD_UNIONFS}|grep , >/dev/null 2>&1     
241 #                                 if [ $? -eq 0 ]
242 #                                 then   
243 #                                         UID=`echo ${CMD_UNIONFS#*,}`   
244 #                                         UNIONFS=`echo ${CMD_UNIONFS%,*}`       
245 #                                 else   
246 #                                         UNIONFS=${CMD_UNIONFS}         
247 #                                 fi     
248 #                         fi     
249 #                 ;;
250         esac
251 done
252
253 if [ -z "${REAL_ROOT}" -a \( "${CDROOT}" = '0' \)  -a \( "${FAKE_ROOT}" != "/dev/ram0" \) ]
254 then
255         REAL_ROOT="${FAKE_ROOT}"        
256 fi
257
258 splash 'init'
259
260 cmdline_hwopts
261
262 # Mount sysfs
263 mount_sysfs
264
265 # Setup hotplugging for firmware loading
266 setup_hotplug
267
268 # Load modules listed in MY_HWOPTS if /lib/modules exists for the running kernel
269 if [ -z "${DO_modules}" ]
270 then
271         good_msg 'Skipping module load; disabled via commandline'
272 elif [ -d "/lib/modules/${KV}" ]
273 then
274         good_msg 'Loading modules'
275         # Load appropriate kernel modules
276         if [ "${NODETECT}" != '1' ]
277         then
278                 for modules in ${MY_HWOPTS}
279                 do
280                         modules_scan ${modules}
281                 done
282         fi
283         # Always eval doload=...
284         modules_load ${MDOLIST}
285 else
286         good_msg 'Skipping module load; no modules in the ramdisk!'
287 fi
288
289 # Delay if needed for USB hardware
290 sdelay
291
292 # Start device manager
293 start_dev_mgr
294
295 # Start iSCSI
296 startiscsi
297
298 # let iscsid settle - otherwise mounting the iSCSI-disk will fail (very rarely, though)
299 sleep 1
300
301 # Setup md device nodes if they dont exist
302 setup_md_device
303
304 # Scan volumes
305 startVolumes
306
307 setup_keymap
308
309 # Initialize LUKS root device except for livecd's
310 if [ "${CDROOT}" != 1 ]
311 then
312         startLUKS
313         if [ "${NORESUME}" != '1' ] && [ -n "${REAL_RESUME}" ]
314         then
315                 case "${REAL_RESUME}" in
316                         LABEL\=*|UUID\=*)
317
318                                 RESUME_DEV=""
319                                 retval=1
320                                 
321                                 if [ ${retval} -ne 0 ]; then
322                                         RESUME_DEV=`findfs "${REAL_RESUME}" 2>/dev/null`
323                                         retval=$?
324                                 fi
325                                 
326                                 if [ ${retval} -ne 0 ]; then
327                                         RESUME_DEV=`busybox findfs "${REAL_RESUME}" 2>/dev/null`
328                                         retval=$?
329                                 fi
330                                 
331                                 if [ ${retval} -ne 0 ]; then
332                                         RESUME_DEV=`blkid -t "${REAL_RESUME}" | cut -d ":" -f 1 2>/dev/null`
333                                         retval=$?
334                                 fi
335                                 
336                                 if [ ${retval} -eq 0 ] && [ -n "${RESUME_DEV}" ]; then
337                                         good_msg "Detected real_resume=${RESUME_DEV}"
338                                         REAL_RESUME="${RESUME_DEV}"
339                                 fi
340                                 ;;
341                 esac
342
343                 do_resume
344         fi
345 fi
346
347 mkdir -p "${NEW_ROOT}"
348 CHROOT="${NEW_ROOT}"
349
350 # Run debug shell if requested
351 rundebugshell
352
353 if [ "${CDROOT}" = '1' ]
354 then
355         good_msg "Making tmpfs for ${NEW_ROOT}"
356         mount -n -t tmpfs tmpfs "${NEW_ROOT}"
357         
358         for i in dev mnt mnt/cdrom mnt/livecd mnt/key tmp tmp/.initrd mnt/gentoo sys
359         do
360                 mkdir -p "${NEW_ROOT}/${i}"
361                 chmod 755 "${NEW_ROOT}/${i}"
362         done
363         [ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
364         [ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console c 5 1
365
366         # For SGI LiveCDs ...
367         if [ "${LOOPTYPE}" = "sgimips" ]
368         then
369                 [ ! -e "${NEW_ROOT}/dev/sr0" ] && mknod "${NEW_ROOT}/dev/sr0" b 11 0
370                 [ ! -e "${NEW_ROOT}/dev/loop0" ] && mknod "${NEW_ROOT}/dev/loop0" b 7 0
371         fi
372
373         # Required for splash to work.  Not an issue with the initrd as this
374         # device isn't created there and is not needed.
375         if [ -e /dev/tty1 ]
376         then
377                 [ ! -e "${NEW_ROOT}/dev/tty1" ] && mknod "${NEW_ROOT}/dev/tty1" c 4 1
378         fi
379
380         if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
381         then
382                 bootstrapCD
383         fi
384
385         if [ "${REAL_ROOT}" = '' ]
386         then
387                 echo -n -e "${WARN}>>${NORMAL}${BOLD} No bootable medium found. Waiting for new devices"
388                 
389                 COUNTER=0
390                 while [ ${COUNTER} -lt 3 ]; do
391                         sleep 3
392                         echo -n '.'
393                         let COUNTER=${COUNTER}+1
394                 done
395
396                 sleep 1
397                 echo -e "${NORMAL}"
398                 bootstrapCD
399         fi
400
401         if [ "${REAL_ROOT}" = '' ]
402         then
403                 # Undo stuff
404                 umount  "${NEW_ROOT}/dev" 2>/dev/null
405                 umount  "${NEW_ROOT}/sys" 2>/dev/null
406                 umount /sys 2>/dev/null
407
408                 umount  "${NEW_ROOT}"
409                 rm -rf  "${NEW_ROOT}/*"
410
411                 bad_msg 'Could not find CD to boot, something else needed!'
412                 CDROOT=0
413         fi
414 fi
415
416 # Determine root device
417 good_msg 'Determining root device...'
418 while true
419 do
420         while [ "${got_good_root}" != '1' ]
421         do
422                 case "${REAL_ROOT}" in
423                         LABEL\=*|UUID\=*)
424                         
425                                 ROOT_DEV=""
426                                 retval=1
427                                 
428                                 if [ ${retval} -ne 0 ]; then
429                                         ROOT_DEV=`findfs "${REAL_ROOT}" 2>/dev/null`
430                                         retval=$?
431                                 fi
432                                 
433                                 if [ ${retval} -ne 0 ]; then
434                                         ROOT_DEV=`busybox findfs "${REAL_ROOT}" 2>/dev/null`
435                                         retval=$?
436                                 fi
437                                 
438                                 if [ ${retval} -ne 0 ]; then
439                                         ROOT_DEV=`blkid -t "${REAL_ROOT}" | cut -d ":" -f 1 2>/dev/null`
440                                         retval=$?
441                                 fi
442                                 
443                                 if [ ${retval} -eq 0 ] && [ -n "${ROOT_DEV}" ]; then
444                                         good_msg "Detected real_root=${ROOT_DEV}"
445                                         REAL_ROOT="${ROOT_DEV}"
446                                 else
447                                         whereis "REAL_ROOT" "root block device"
448                                         got_good_root=0
449                                         continue
450                                 fi
451                                 ;;
452                 esac
453                                 
454                 if [ "${REAL_ROOT}" = '' ]
455                 then
456                         # No REAL_ROOT determined/specified. Prompt user for root block device.
457                         whereis "REAL_ROOT" "root block device"
458                         got_good_root=0
459
460                 # Check for a block device or /dev/nfs
461                 elif [ -b "${REAL_ROOT}" ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
462                 then
463                         got_good_root=1
464
465                 else
466                         bad_msg "Block device ${REAL_ROOT} is not a valid root device..."
467                         REAL_ROOT=""
468                         got_good_root=0
469                 fi
470         done
471
472
473         if [ "${CDROOT}" = 1 -a "${got_good_root}" = '1' -a "${REAL_ROOT}" != "/dev/nfs" ]
474         then
475                 # CD already mounted; no further checks necessary
476                 break
477         elif [ "${LOOPTYPE}" = "sgimips" ]
478         then
479                 # sgimips mounts the livecd root partition directly
480                 # there is no isofs filesystem to worry about
481                 break
482         else
483                 good_msg "Mounting root..."
484
485                 # Try to mount the device as ${NEW_ROOT}
486                 if [ "${REAL_ROOT}" = '/dev/nfs' ]; then
487                         findnfsmount
488                 else
489                         # mount ro so fsck doesn't barf later
490                         if [ "${REAL_ROOTFLAGS}" = '' ]; then
491                                 mount -o ro ${REAL_ROOT} ${NEW_ROOT}
492                         else
493                                 good_msg "Using mount -o ro,${REAL_ROOTFLAGS}"
494                                 mount -o ro,${REAL_ROOTFLAGS} ${REAL_ROOT} ${NEW_ROOT}
495                         fi
496                 fi
497                 
498                 # If mount is successful break out of the loop 
499                 # else not a good root and start over.
500                 if [ "$?" = '0' ]
501                 then
502                         if [ -d ${NEW_ROOT}/dev -a -x ${NEW_ROOT}/sbin/init ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
503                         then
504                                 break
505                         else
506                                 bad_msg "The filesystem mounted at ${REAL_ROOT} does not appear to be a valid /, try again"
507                                 got_good_root=0
508                                 REAL_ROOT=''
509                         fi
510                 else
511                         bad_msg "Could not mount specified ROOT, try again"
512                         got_good_root=0
513                         REAL_ROOT=''
514                 fi
515         fi
516 done
517 # End determine root device
518
519 #verbose_kmsg
520
521 # If CD root is set determine the looptype to boot
522 if [ "${CDROOT}" = '1' ]
523 then
524         good_msg 'Determining looptype ...'
525         cd "${NEW_ROOT}"
526
527         # Find loop and looptype
528         [ -z "${LOOP}" ] && find_loop
529         [ -z "${LOOPTYPE}" ] && find_looptype
530
531         cache_cd_contents
532
533         # If encrypted, find key and mount, otherwise mount as usual
534         if [ -n "${CRYPT_ROOT}" ]
535         then
536                 CRYPT_ROOT_KEY="$(head -n 1 ${NEW_ROOT}/mnt/cdrom/livecd)"
537                 CRYPT_ROOT='/dev/loop0'
538                 good_msg 'You booted an encrypted livecd' "${CRYPT_SILENT}"
539
540                 losetup /dev/loop0 "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}"
541                 test_success 'Preparing loop filesystem'
542
543                 startLUKS
544
545                 case ${LOOPTYPE} in
546                         normal)
547                                 MOUNTTYPE="ext2"
548                                 ;;
549                         *)
550                                 MOUNTTYPE="${LOOPTYPE}"
551                                 ;;
552                 esac
553                 mount -t "${MOUNTTYPE}" -o ro /dev/mapper/root "${NEW_ROOT}/mnt/livecd"
554                 test_success 'Mount filesystem'
555                 FS_LOCATION='mnt/livecd'
556         # Setup the loopback mounts, if unencrypted
557         else
558                 if [ "${LOOPTYPE}" = 'normal' ]
559                 then
560                         good_msg 'Mounting loop filesystem'
561                         mount -t ext2 -o loop,ro "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
562                         test_success 'Mount filesystem'
563                         FS_LOCATION='mnt/livecd'
564                 elif [ "${LOOPTYPE}" = 'squashfs' ]
565                 then
566                         good_msg 'Mounting squashfs filesystem'
567                         mount -t squashfs -o loop,ro "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
568                         test_success 'Mount filesystem'
569                         FS_LOCATION='mnt/livecd'
570                 elif [ "${LOOPTYPE}" = 'gcloop' ]
571                 then
572                         good_msg 'Mounting gcloop filesystem'
573                         echo ' ' | losetup -E 19 -e ucl-0 -p0 "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}"
574                         test_success 'losetup the loop device'
575
576                         mount -t ext2 -o ro "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/livecd"
577                         test_success 'Mount the losetup loop device'
578                         FS_LOCATION='mnt/livecd'
579                 elif [ "${LOOPTYPE}" = 'zisofs' ]
580                 then
581                         FS_LOCATION="mnt/cdrom/${LOOPEXT}${LOOP}"
582                 elif [ "${LOOPTYPE}" = 'noloop' ]
583                 then
584                         FS_LOCATION='mnt/cdrom'
585                 elif [ "${LOOPTYPE}" = 'sgimips' ]
586                 then
587                         # getdvhoff finds the starting offset (in bytes) of the squashfs
588                         # partition on the cdrom and returns this offset for losetup
589                         #
590                         # All currently supported SGI Systems use SCSI CD-ROMs, so
591                         # so we know that the CD-ROM is usually going to be /dev/sr0.
592                         #
593                         # We use the value given to losetup to set /dev/loop0 to point
594                         # to the liveCD root partition, and then mount /dev/loop0 as
595                         # the LiveCD rootfs
596                         good_msg 'Locating the SGI LiveCD Root Partition'
597                         echo ' ' | \
598                                 losetup -o $(getdvhoff "${NEW_ROOT}${REAL_ROOT}" 0) \
599                                         "${NEW_ROOT}${CDROOT_DEV}" \
600                                         "${NEW_ROOT}${REAL_ROOT}"
601                         test_success 'losetup /dev/sr0 /dev/loop0'
602         
603                         good_msg 'Mounting the Root Partition'
604                         mount -t squashfs -o ro "${NEW_ROOT}${CDROOT_DEV}" "${NEW_ROOT}/mnt/livecd"
605                         test_success 'mount /dev/loop0 /'
606                         FS_LOCATION='mnt/livecd'
607                 fi
608         fi
609
610
611
612         # Unpacking additional packages from NFS mount
613         # This is useful for adding kernel modules to /lib
614         # We do this now, so that additional packages can add whereever they want.
615         if [ "${REAL_ROOT}" = '/dev/nfs' ]
616         then
617                 if [ -e "${NEW_ROOT}/mnt/cdrom/add" ]
618                 then
619                                 for targz in `ls ${NEW_ROOT}/mnt/cdrom/add/*.tar.gz`
620                                 do      
621                                         tarname=`basename ${targz}`
622                                         good_msg "Adding additional package ${tarname}"
623                                         (cd ${NEW_ROOT} ; /bin/tar -xzf ${targz})
624                                 done
625                 fi
626         fi
627
628
629         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
630         then
631                 setup_unionfs ${NEW_ROOT} ${NEW_ROOT}/${FS_LOCATION}
632                 CHROOT=/union
633         else
634         
635         good_msg "Copying read-write image contents to tmpfs"
636         # Copy over stuff that should be writable
637         (cd "${NEW_ROOT}/${FS_LOCATION}"; cp -a ${ROOT_TREES} "${NEW_ROOT}")
638
639         # Now we do the links.
640         for x in ${ROOT_LINKS}
641         do
642                 if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
643                 then
644                         ln -s "`readlink ${NEW_ROOT}/${FS_LOCATION}/${x}`" "${x}" 2>/dev/null
645                 else
646                         # List all subdirectories of x
647                         find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null | while read directory
648                         do
649                                 # Strip the prefix of the FS_LOCATION
650                                 directory="${directory#${NEW_ROOT}/${FS_LOCATION}/}"
651
652                                 # Skip this directory if we already linked a parent directory
653                                 if [ "${current_parent}" != '' ]; then
654                                         var=`echo "${directory}" | grep "^${current_parent}"`
655                                         if [ "${var}" != '' ]; then
656                                                 continue
657                                         fi
658                                 fi
659                                 # Test if the directory exists already
660                                 if [ -e "/${NEW_ROOT}/${directory}" ]
661                                 then
662                                         # It does exist, link all the individual files
663                                         for file in `ls /${NEW_ROOT}/${FS_LOCATION}/${directory}`
664                                         do
665                                         if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ] && [ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
666                                                         ln -s "/${FS_LOCATION}/${directory}/${file}" "${directory}/${file}" 2> /dev/null
667                                                 fi
668                                         done
669                                 else
670                                         # It does not exist, make a link to the livecd
671                                         ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
672                                         current_parent="${directory}"
673                                 fi
674                         done
675                 fi
676         done
677
678         if [ "${DO_slowusb}" ] || [ "${FORCE_slowusb}" ]
679         then
680                 sleep 10
681         fi
682         mkdir initramfs proc tmp sys 2>/dev/null
683         chmod 1777 tmp
684
685         fi
686
687         #UML=`cat /proc/cpuinfo|grep UML|sed -e 's|model name.*: ||'`
688         #if [ "${UML}" = 'UML' ]
689         #then
690         #       # UML Fixes
691         #       good_msg 'Updating for uml system'
692         #fi
693
694         # Let Init scripts know that we booted from CD
695         export CDBOOT
696         CDBOOT=1
697         check_slowusb
698         if [ "${DO_slowusb}" ] || [ "${FORCE_slowusb}" ]
699         then
700                 sleep 10
701         fi
702 else
703         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
704         then
705                 mkdir /union_changes
706                 mount -t tmpfs tmpfs /union_changes
707                 setup_unionfs /union_changes ${NEW_ROOT}
708                 mkdir -p ${UNION}/tmp/.initrd
709         fi
710 fi
711
712 # Execute script on the cdrom just before boot to update things if necessary
713 cdupdate
714
715 if [ "${SUBDIR}" != '' -a -e "${CHROOT}/${SUBDIR}" ]
716 then
717         good_msg "Entering ${SUBDIR} to boot"
718         CHROOT="${CHROOT}/${SUBDIR}"
719 fi
720
721 verbose_kmsg
722
723 echo -ne "${GOOD}>>${NORMAL}${BOLD} Booting (initramfs)${NORMAL}"
724 if [ ! -e "${CHROOT}/dev/console" ] || [ ! -e "${CHROOT}/dev/null" ]
725 then
726         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing files required to boot (console and null)${NORMAL}"
727 elif [ -e /etc/initrd.splash -a ! -e "${CHROOT}/dev/tty1" ]
728 then
729         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing tty1, which is required for splash${NORMAL}"
730 fi
731
732 cd "${CHROOT}"
733 mkdir "${CHROOT}/proc" "${CHROOT}/sys" 2>/dev/null
734 echo -ne "${BOLD}.${NORMAL}"
735 umount /sys || echo '*: Failed to unmount the ramdisk /sys!'
736 umount /proc || echo '*: Failed to unmount the ramdisk /proc!'
737 echo -e "${BOLD}.${NORMAL}"
738
739 exec /sbin/switch_root -c "/dev/console" "${CHROOT}" "${REAL_INIT:-/sbin/init}" "${INIT_OPTS}"
740
741 # If we get here, something bad has happened
742 splash 'verbose'
743
744 echo 'A fatal error has probably occured since /sbin/init did not'
745 echo 'boot correctly. Trying to open a shell...'
746 echo
747 exec /bin/bash
748 exec /bin/sh
749 exec /bin/ash
750 exec sh