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 "${x}"`
  82                 ;;
  83                 # Start Volume manager options
  84                 dolvm)
  85                         USE_LVM_NORMAL=1
  86                 ;;
  87                 dolvm2)
  88                         bad_msg 'Using dolvm2 is deprecated, use dolvm, instead.'
  89                         USE_LVM_NORMAL=1
  90                 ;;
  91                 domdadm)
  92                         USE_MDADM=1
  93                 ;;
  94                 dodmraid)
  95                         USE_DMRAID_NORMAL=1
  96                 ;;
  97                 dodmraid\=*)
  98                         DMRAID_OPTS=`parse_opt "${x}"`
  99                         USE_DMRAID_NORMAL=1
 100                 ;;
 101                 doevms)
 102                         USE_EVMS_NORMAL=1
 103                 ;;
 104                 doevms2)
 105                         bad_msg 'Using doevms2 is deprecated, use doevms, instead.'
 106                         USE_EVMS_NORMAL=1
 107                 ;;
 108                 # Debug Options
 109                 debug)
 110                         DEBUG='yes'
 111                 ;;
 112                 # Scan delay options
 113                 scandelay\=*)
 114                         SDELAY=`parse_opt "${x}"`
 115                 ;;
 116                 scandelay)
 117                         SDELAY=10
 118                 ;;
 119                 # Module no-loads
 120                 doload\=*)
 121                         MDOLIST=`parse_opt "${x}"`
 122                         MDOLIST="`echo ${MDOLIST} | sed -e 's/,/ /g'`"
 123                 ;;
 124                 nodetect)
 125                         NODETECT=1
 126                 ;;
 127                 noload\=*)
 128                         MLIST=`parse_opt "${x}"`
 129                         MLIST="`echo ${MLIST} | sed -e 's/,/ /g'`"
 130                         export MLIST
 131                 ;;
 132                 # Redirect output to a specific tty
 133                 CONSOLE\=*|console\=*)
 134                         CONSOLE=`parse_opt "${x}"`
 135                         exec >${CONSOLE} <${CONSOLE} 2>&1
 136                 ;;
 137                 # /dev/md
 138                 lvmraid\=*)
 139                         RAID_DEVICES="`parse_opt ${x}`"
 140                         RAID_DEVICES="`echo ${RAID_DEVICES} | sed -e 's/,/ /g'`"
 141                 ;;
 142                 part\=*)
 143                         MDPART=`parse_opt "${x}"`
 144                 ;;
 145                 # NFS
 146                 ip\=*)
 147                         IP=`parse_opt "${x}"`
 148                 ;;
 149                 nfsroot\=*)
 150                         NFSROOT=`parse_opt "${x}"`
 151                 ;;
 152                 crypt_root\=*)
 153                         CRYPT_ROOT=`parse_opt "${x}"`
 154                 ;;
 155                 crypt_swap\=*)
 156                         CRYPT_SWAP=`parse_opt "${x}"`
 157                 ;;
 158                 root_key\=*)
 159                         CRYPT_ROOT_KEY=`parse_opt "${x}"`
 160                 ;;
 161                 root_keydev\=*)
 162                         CRYPT_ROOT_KEYDEV=`parse_opt "${x}"`
 163                 ;;
 164                 swap_key\=*)
 165                         CRYPT_SWAP_KEY=`parse_opt "${x}"`
 166                 ;;
 167                 swap_keydev\=*)
 168                         CRYPT_SWAP_KEYDEV=`parse_opt "${x}"`
 169                 ;;
 170                 real_resume\=*)
 171                         REAL_RESUME=`parse_opt "${x}"`
 172                 ;;
 173                 noresume)
 174                         NORESUME=1
 175                 ;;
 176                 crypt_silent)
 177                         CRYPT_SILENT=1
 178                 ;;
 179                 real_rootflags\=*)
 180                         REAL_ROOTFLAGS=`parse_opt "${x}"`
 181                 ;;
 182                 keymap\=*)
 183                         keymap=`parse_opt "${x}"`
 184                 ;;
 185                 unionfs)
 186                         if [ ! -x /sbin/unionfs ]
 187                         then
 188                                 USE_UNIONFS_NORMAL=0
 189                                 bad_msg 'unionfs binary not found: aborting use of unionfs!'
 190                         else
 191                                 USE_UNIONFS_NORMAL=1
 192                         fi
 193                         ;;
 194                 nounionfs)
 195                         USE_UNIONFS_NORMAL=0
 196                         ;;
 197 #                 unionfs\=*)
 198 #                         if [ ! -x /sbin/unionfs ]
 199 #                         then
 200 #                                 USE_UNIONFS_NORMAL=0
 201 #                                 bad_msg 'unionfs binary not found: aborting use of unionfs!'
 202 #                         else
 203 #                                 USE_UNIONFS_NORMAL=1
 204 #                                 CMD_UNIONFS=`parse_opt "${x}"`
 205 #                                 echo ${CMD_UNIONFS}|grep , >/dev/null 2>&1
 206 #                                 if [ "$?" -eq '0' ]
 207 #                                 then
 208 #                                         UID=`echo ${CMD_UNIONFS#*,}`
 209 #                                         UNIONFS=`echo ${CMD_UNIONFS%,*}`
 210 #                                 else
 211 #                                         UNIONFS=${CMD_UNIONFS}
 212 #                                 fi
 213 #                         fi
 214 #                 ;;
 215         esac
 216 done
 217
 218 if [ -z "${REAL_ROOT}" -a \( "${CDROOT}" -eq 0 \)  -a \( "${FAKE_ROOT}" != "/dev/ram0" \) ]
 219 then
 220         REAL_ROOT="${FAKE_ROOT}"
 221 fi
 222
 223 splash 'init'
 224
 225 detect_sbp2_devices
 226 cmdline_hwopts
 227
 228 # Mount sysfs
 229 mount_sysfs
 230
 231 # Setup hotplugging for firmware loading
 232 setup_hotplug
 233
 234 # Load modules listed in MY_HWOPTS if /lib/modules exists for the running kernel
 235 if [ -z "${DO_modules}" ]
 236 then
 237         good_msg 'Skipping module load; disabled via commandline'
 238 elif [ -d "/lib/modules/${KV}" ]
 239 then
 240         good_msg 'Loading modules'
 241         # Load appropriate kernel modules
 242         if [ "${NODETECT}" != '1' ]
 243         then
 244                 for modules in ${MY_HWOPTS}
 245                 do
 246                         modules_scan ${modules}
 247                 done
 248         fi
 249         # Always eval doload=...
 250         modules_load ${MDOLIST}
 251 else
 252         good_msg 'Skipping module load; no modules in the ramdisk!'
 253 fi
 254
 255 # Delay if needed for USB hardware
 256 sdelay
 257
 258 # Start device manager
 259 start_dev_mgr
 260
 261 # Setup md device nodes if they dont exist
 262 setup_md_device
 263
 264 # Scan volumes
 265 startVolumes
 266
 267 setup_keymap
 268
 269 # Initialize LUKS root device except for livecd's
 270 if [ "${CDROOT}" != 1 ]
 271 then
 272         startLUKS
 273         if [ "${NORESUME}" != '1' ] && [ -n "${REAL_RESUME}" ]
 274         then
 275                 case "${REAL_RESUME}" in
 276                         LABEL\=*|UUID\=*)
 277
 278                                 RESUME_DEV=""
 279                                 retval=1
 280
 281                                 if [ "${retval}" -ne '0' ]; then
 282                                         RESUME_DEV=`findfs "${REAL_RESUME}" 2>/dev/null`
 283                                         retval=$?
 284                                 fi
 285
 286                                 if [ "$retval" -ne '0' ]; then
 287                                         RESUME_DEV=`busybox findfs "${REAL_RESUME}" 2>/dev/null`
 288                                         retval=$?
 289                                 fi
 290
 291                                 if [ "${retval}" -ne '0' ]; then
 292                                         RESUME_DEV=`blkid -t "${REAL_RESUME}" | cut -d ":" -f 1 2>/dev/null`
 293                                         retval=$?
 294                                 fi
 295
 296                                 if [ "${retval}" -eq '0' ] && [ -n "${RESUME_DEV}" ]; then
 297                                         good_msg "Detected real_resume=${RESUME_DEV}"
 298                                         REAL_RESUME="${RESUME_DEV}"
 299                                 fi
 300                                 ;;
 301                 esac
 302
 303                 swsusp_resume
 304 #               suspend_resume
 305                 tuxonice_resume
 306         fi
 307 fi
 308
 309 mkdir -p "${NEW_ROOT}"
 310 CHROOT="${NEW_ROOT}"
 311
 312 # Run debug shell if requested
 313 rundebugshell
 314
 315 if [ "${CDROOT}" = '1' ]
 316 then
 317         good_msg "Making tmpfs for ${NEW_ROOT}"
 318         mount -n -t tmpfs tmpfs "${NEW_ROOT}"
 319
 320         for i in dev mnt mnt/cdrom mnt/livecd mnt/key tmp tmp/.initrd mnt/gentoo sys
 321         do
 322                 mkdir -p "${NEW_ROOT}/${i}"
 323                 chmod 755 "${NEW_ROOT}/${i}"
 324         done
 325         [ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
 326         [ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console c 5 1
 327
 328         # For SGI LiveCDs ...
 329         if [ "${LOOPTYPE}" = "sgimips" ]
 330         then
 331                 [ ! -e "${NEW_ROOT}/dev/sr0" ] && mknod "${NEW_ROOT}/dev/sr0" b 11 0
 332                 [ ! -e "${NEW_ROOT}/dev/loop0" ] && mknod "${NEW_ROOT}/dev/loop0" b 7 0
 333         fi
 334
 335         # Required for splash to work.  Not an issue with the initrd as this
 336         # device isn't created there and is not needed.
 337         if [ -e /dev/tty1 ]
 338         then
 339                 [ ! -e "${NEW_ROOT}/dev/tty1" ] && mknod "${NEW_ROOT}/dev/tty1" c 4 1
 340         fi
 341
 342         if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
 343         then
 344                 bootstrapCD
 345         fi
 346
 347         if [ "${REAL_ROOT}" = '' ]
 348         then
 349                 echo -n -e "${WARN}>>${NORMAL}${BOLD} No bootable medium found. Waiting for new devices"
 350
 351                 COUNTER=0
 352                 while [ ${COUNTER} -lt 3 ]; do
 353                         sleep 3
 354                         echo -n '.'
 355                         let COUNTER=${COUNTER}+1
 356                 done
 357
 358                 sleep 1
 359                 echo -e "${NORMAL}"
 360                 bootstrapCD
 361         fi
 362
 363         if [ "${REAL_ROOT}" = '' ]
 364         then
 365                 # Undo stuff
 366                 umount  "${NEW_ROOT}/dev" 2>/dev/null
 367                 umount  "${NEW_ROOT}/sys" 2>/dev/null
 368                 umount /sys 2>/dev/null
 369
 370                 umount  "${NEW_ROOT}"
 371                 rm -rf  "${NEW_ROOT}/*"
 372
 373                 bad_msg 'Could not find CD to boot, something else needed!'
 374                 CDROOT=0
 375         fi
 376 fi
 377
 378 # Determine root device
 379 good_msg 'Determining root device...'
 380 while true
 381 do
 382         while [ "${got_good_root}" != '1' ]
 383         do
 384                 case "${REAL_ROOT}" in
 385                         LABEL\=*|UUID\=*)
 386
 387                                 ROOT_DEV=""
 388                                 retval=1
 389
 390                                 if [ "${retval}" -ne '0' ]; then
 391                                         ROOT_DEV=`findfs "${REAL_ROOT}" 2>/dev/null`
 392                                         retval=$?
 393                                 fi
 394
 395                                 if [ "$retval" -ne '0' ]; then
 396                                         ROOT_DEV=`busybox findfs "${REAL_ROOT}" 2>/dev/null`
 397                                         retval=$?
 398                                 fi
 399
 400                                 if [ "${retval}" -ne '0' ]; then
 401                                         ROOT_DEV=`blkid -t "${REAL_ROOT}" | cut -d ":" -f 1 2>/dev/null`
 402                                         retval=$?
 403                                 fi
 404
 405                                 if [ "${retval}" -eq '0' ] && [ -n "${ROOT_DEV}" ]; then
 406                                         good_msg "Detected real_root=${ROOT_DEV}"
 407                                         REAL_ROOT="${ROOT_DEV}"
 408                                 else
 409                                         whereis "REAL_ROOT" "root block device"
 410                                         got_good_root=0
 411                                         continue
 412                                 fi
 413                                 ;;
 414                 esac
 415
 416                 if [ "${REAL_ROOT}" = '' ]
 417                 then
 418                         # No REAL_ROOT determined/specified. Prompt user for root block device.
 419                         whereis "REAL_ROOT" "root block device"
 420                         got_good_root=0
 421
 422                 # Check for a block device or /dev/nfs
 423                 elif [ -b "${REAL_ROOT}" ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 424                 then
 425                         got_good_root=1
 426
 427                 else
 428                         bad_msg "Block device ${REAL_ROOT} is not a valid root device..."
 429                         REAL_ROOT=""
 430                         got_good_root=0
 431                 fi
 432         done
 433
 434
 435         if [ "${CDROOT}" = 1 -a "${got_good_root}" = '1' -a "${REAL_ROOT}" != "/dev/nfs" ]
 436         then
 437                 # CD already mounted; no further checks necessary
 438                 break
 439         elif [ "${LOOPTYPE}" = "sgimips" ]
 440         then
 441                 # sgimips mounts the livecd root partition directly
 442                 # there is no isofs filesystem to worry about
 443                 break
 444         else
 445                 good_msg "Mounting root..."
 446
 447                 # Try to mount the device as ${NEW_ROOT}
 448                 if [ "${REAL_ROOT}" = '/dev/nfs' ]; then
 449                         findnfsmount
 450                 else
 451                         # mount ro so fsck doesn't barf later
 452                         if [ "${REAL_ROOTFLAGS}" = '' ]; then
 453                                 mount -o ro ${REAL_ROOT} ${NEW_ROOT}
 454                         else
 455                                 good_msg "Using mount -o ro,${REAL_ROOTFLAGS}"
 456                                 mount -o ro,${REAL_ROOTFLAGS} ${REAL_ROOT} ${NEW_ROOT}
 457                         fi
 458                 fi
 459
 460                 # If mount is successful break out of the loop
 461                 # else not a good root and start over.
 462                 if [ "$?" = '0' ]
 463                 then
 464                         if [ -d ${NEW_ROOT}/dev -a -x ${NEW_ROOT}/sbin/init ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 465                         then
 466                                 break
 467                         else
 468                                 bad_msg "The filesystem mounted at ${REAL_ROOT} does not appear to be a valid /, try again"
 469                                 got_good_root=0
 470                                 REAL_ROOT=''
 471                         fi
 472                 else
 473                         bad_msg "Could not mount specified ROOT, try again"
 474                         got_good_root=0
 475                         REAL_ROOT=''
 476                 fi
 477         fi
 478 done
 479 # End determine root device
 480
 481 #verbose_kmsg
 482
 483 # If CD root is set determine the looptype to boot
 484 if [ "${CDROOT}" = '1' ]
 485 then
 486         good_msg 'Determining looptype ...'
 487         cd "${NEW_ROOT}"
 488
 489         # Find loop and looptype
 490         [ -z "${LOOP}" ] && find_loop
 491         [ -z "${LOOPTYPE}" ] && find_looptype
 492
 493         cache_cd_contents
 494
 495         # If encrypted, find key and mount, otherwise mount as usual
 496         if [ -n "${CRYPT_ROOT}" ]
 497         then
 498                 CRYPT_ROOT_KEY="$(head -n 1 ${NEW_ROOT}/mnt/cdrom/livecd)"
 499                 CRYPT_ROOT='/dev/loop0'
 500                 good_msg 'You booted an encrypted livecd' "${CRYPT_SILENT}"
 501
 502                 losetup /dev/loop0 "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}"
 503                 test_success 'Preparing loop filesystem'
 504
 505                 startLUKS
 506
 507                 case ${LOOPTYPE} in
 508                         normal)
 509                                 MOUNTTYPE="ext2"
 510                                 ;;
 511                         *)
 512                                 MOUNTTYPE="${LOOPTYPE}"
 513                                 ;;
 514                 esac
 515                 mount -t "${MOUNTTYPE}" -o ro /dev/mapper/root "${NEW_ROOT}/mnt/livecd"
 516                 test_success 'Mount filesystem'
 517                 FS_LOCATION='mnt/livecd'
 518         # Setup the loopback mounts, if unencrypted
 519         else
 520                 if [ "${LOOPTYPE}" = 'normal' ]
 521                 then
 522                         good_msg 'Mounting loop filesystem'
 523                         mount -t ext2 -o loop,ro "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 524                         test_success 'Mount filesystem'
 525                         FS_LOCATION='mnt/livecd'
 526                 elif [ "${LOOPTYPE}" = 'squashfs' ]
 527                 then
 528                         good_msg 'Mounting squashfs filesystem'
 529                         mount -t squashfs -o loop,ro "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 530                         test_success 'Mount filesystem'
 531                         FS_LOCATION='mnt/livecd'
 532                 elif [ "${LOOPTYPE}" = 'gcloop' ]
 533                 then
 534                         good_msg 'Mounting gcloop filesystem'
 535                         echo ' ' | losetup -E 19 -e ucl-0 -p0 "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}"
 536                         test_success 'losetup the loop device'
 537
 538                         mount -t ext2 -o ro "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/livecd"
 539                         test_success 'Mount the losetup loop device'
 540                         FS_LOCATION='mnt/livecd'
 541                 elif [ "${LOOPTYPE}" = 'zisofs' ]
 542                 then
 543                         FS_LOCATION="mnt/cdrom/${LOOPEXT}${LOOP}"
 544                 elif [ "${LOOPTYPE}" = 'noloop' ]
 545                 then
 546                         FS_LOCATION='mnt/cdrom'
 547                 elif [ "${LOOPTYPE}" = 'sgimips' ]
 548                 then
 549                         # getdvhoff finds the starting offset (in bytes) of the squashfs
 550                         # partition on the cdrom and returns this offset for losetup
 551                         #
 552                         # All currently supported SGI Systems use SCSI CD-ROMs, so
 553                         # so we know that the CD-ROM is usually going to be /dev/sr0.
 554                         #
 555                         # We use the value given to losetup to set /dev/loop0 to point
 556                         # to the liveCD root partition, and then mount /dev/loop0 as
 557                         # the LiveCD rootfs
 558                         good_msg 'Locating the SGI LiveCD Root Partition'
 559                         echo ' ' | \
 560                                 losetup -o $(getdvhoff "${NEW_ROOT}${REAL_ROOT}" 0) \
 561                                         "${NEW_ROOT}${CDROOT_DEV}" \
 562                                         "${NEW_ROOT}${REAL_ROOT}"
 563                         test_success 'losetup /dev/sr0 /dev/loop0'
 564
 565                         good_msg 'Mounting the Root Partition'
 566                         mount -t squashfs -o ro "${NEW_ROOT}${CDROOT_DEV}" "${NEW_ROOT}/mnt/livecd"
 567                         test_success 'mount /dev/loop0 /'
 568                         FS_LOCATION='mnt/livecd'
 569                 fi
 570         fi
 571
 572
 573
 574         # Unpacking additional packages from NFS mount
 575         # This is useful for adding kernel modules to /lib
 576         # We do this now, so that additional packages can add whereever they want.
 577         if [ "${REAL_ROOT}" = '/dev/nfs' ]
 578         then
 579                 if [ -e "${NEW_ROOT}/mnt/cdrom/add" ]
 580                 then
 581                                 for targz in `ls ${NEW_ROOT}/mnt/cdrom/add/*.tar.gz`
 582                                 do
 583                                         tarname=`basename ${targz}`
 584                                         good_msg "Adding additional package ${tarname}"
 585                                         (cd ${NEW_ROOT} ; /bin/tar -xzf ${targz})
 586                                 done
 587                 fi
 588         fi
 589
 590
 591         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 592         then
 593                 setup_unionfs ${NEW_ROOT} ${NEW_ROOT}/${FS_LOCATION}
 594                 CHROOT=/union
 595         else
 596
 597         good_msg "Copying read-write image contents to tmpfs"
 598         # Copy over stuff that should be writable
 599         (cd "${NEW_ROOT}/${FS_LOCATION}"; cp -a ${ROOT_TREES} "${NEW_ROOT}")
 600
 601         # Now we do the links.
 602         for x in ${ROOT_LINKS}
 603         do
 604                 if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
 605                 then
 606                         ln -s "`readlink ${NEW_ROOT}/${FS_LOCATION}/${x}`" "${x}" 2>/dev/null
 607                 else
 608                         # List all subdirectories of x
 609                         find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null | while read directory
 610                         do
 611                                 # Strip the prefix of the FS_LOCATION
 612                                 directory="${directory#${NEW_ROOT}/${FS_LOCATION}/}"
 613
 614                                 # Skip this directory if we already linked a parent directory
 615                                 if [ "${curent_parrent}" != '' ]; then
 616                                         var=`echo "${directory}" | grep "^${curent_parrent}"`
 617                                         if [ "${var}" != '' ]; then
 618                                                 continue
 619                                         fi
 620                                 fi
 621                                 # Test if the directory exists already
 622                                 if [ -e "/${NEW_ROOT}/${directory}" ]
 623                                 then
 624                                         # It does exist, link all the individual files
 625                                         for file in `ls /${NEW_ROOT}/${FS_LOCATION}/${directory}`
 626                                         do
 627                                         if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ] && [ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
 628                                                         ln -s "/${FS_LOCATION}/${directory}/${file}" "${directory}/${file}" 2> /dev/null
 629                                                 fi
 630                                         done
 631                                 else
 632                                         # It does not exist, make a link to the livecd
 633                                         ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
 634                                         current_parent="${directory}"
 635                                 fi
 636                         done
 637                 fi
 638         done
 639
 640         if [ "${DO_slowusb}" ] || [ "${FORCE_slowusb}" ]
 641         then
 642                 sleep 10
 643         fi
 644         mkdir initramfs proc tmp sys 2>/dev/null
 645         chmod 1777 tmp
 646
 647         fi
 648
 649         #UML=`cat /proc/cpuinfo|grep UML|sed -e 's|model name.*: ||'`
 650         #if [ "${UML}" = 'UML' ]
 651         #then
 652         #       # UML Fixes
 653         #       good_msg 'Updating for uml system'
 654         #fi
 655
 656         # Let Init scripts know that we booted from CD
 657         export CDBOOT
 658         CDBOOT=1
 659         check_slowusb
 660         if [ "${DO_slowusb}" ] || [ "${FORCE_slowusb}" ]
 661         then
 662                 sleep 10
 663         fi
 664 else
 665         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 666         then
 667                 mkdir /union_changes
 668                 mount -t tmpfs tmpfs /union_changes
 669                 setup_unionfs /union_changes ${NEW_ROOT}
 670                 mkdir -p ${UNION}/tmp/.initrd
 671         fi
 672 fi
 673
 674 # Execute script on the cdrom just before boot to update things if necessary
 675 cdupdate
 676
 677 if [ "${SUBDIR}" != '' -a -e "${CHROOT}/${SUBDIR}" ]
 678 then
 679         good_msg "Entering ${SUBDIR} to boot"
 680         CHROOT="${CHROOT}/${SUBDIR}"
 681 fi
 682
 683 verbose_kmsg
 684
 685 echo -ne "${GOOD}>>${NORMAL}${BOLD} Booting (initramfs)${NORMAL}"
 686 if [ ! -e "${CHROOT}/dev/console" ] || [ ! -e "${CHROOT}/dev/null" ]
 687 then
 688         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing files required to boot (console and null)${NORMAL}"
 689 elif [ -e /etc/initrd.splash -a ! -e "${CHROOT}/dev/tty1" ]
 690 then
 691         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing tty1, which is required for splash${NORMAL}"
 692 fi
 693
 694 cd "${CHROOT}"
 695 mkdir "${CHROOT}/proc" "${CHROOT}/sys" 2>/dev/null
 696 echo -ne "${BOLD}.${NORMAL}"
 697 umount /sys || echo '*: Failed to unmount the ramdisk /sys!'
 698 umount /proc || echo '*: Failed to unmount the ramdisk /proc!'
 699 echo -e "${BOLD}.${NORMAL}"
 700
 701 exec env -i /sbin/switch_root -c "/dev/console" "${CHROOT}" "${REAL_INIT:-/sbin/init}" "${INIT_OPTS}"
 702
 703 # If we get here, something bad has happened
 704 splash 'verbose'
 705
 706 echo 'A fatal error has probably occured since /sbin/init did not'
 707 echo 'boot correctly. Trying to open a shell...'
 708 echo
 709 exec /bin/bash
 710 exec /bin/sh
 711 exec /bin/ash
 712 exec sh