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 fi
  33
  34 if [ -e /bin/lvm ]
  35 then
  36         [ -e /bin/vgscan   ] || ln -s /bin/lvm /bin/vgscan
  37         [ -e /bin/vgchange ] || ln -s /bin/lvm /bin/vgchange
  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=3
 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                         CONSOLE=`basename ${CONSOLE}`
 139 #                       exec >${CONSOLE} <${CONSOLE} 2>&1
 140                 ;;
 141                 # /dev/md
 142                 lvmraid\=*)
 143                         RAID_DEVICES="`parse_opt ${x}`"
 144                         RAID_DEVICES="`echo ${RAID_DEVICES} | sed -e 's/,/ /g'`"
 145                 ;;
 146                 part\=*)
 147                         MDPART=`parse_opt "${x}"`
 148                 ;;
 149                 # NFS
 150                 ip\=*)
 151                         IP=`parse_opt "${x}"`
 152                 ;;
 153                 nfsroot\=*)
 154                         NFSROOT=`parse_opt "${x}"`
 155                 ;;
 156                 # iSCSI
 157                 iscsi_initiatorname\=*)
 158                         ISCSI_INITIATORNAME=`parse_opt "${x}"`
 159                 ;;
 160                 iscsi_target\=*)
 161                         ISCSI_TARGET=`parse_opt "${x}"`
 162                 ;;
 163                 iscsi_tgpt\=*)
 164                         ISCSI_TGPT=`parse_opt "${x}"`
 165                 ;;
 166                 iscsi_address\=*)
 167                         ISCSI_ADDRESS=`parse_opt "${x}"`
 168                 ;;
 169                 iscsi_port\=*)
 170                         ISCSI_PORT=`parse_opt "${x}"`
 171                 ;;
 172                 iscsi_username\=*)
 173                         ISCSI_USERNAME=`parse_opt "${x}"`
 174                 ;;
 175                 iscsi_password\=*)
 176                         ISCSI_PASSWORD=`parse_opt "${x}"`
 177                 ;;
 178                 iscsi_username_in\=*)
 179                         ISCSI_USERNAME_IN=`parse_opt "${x}"`
 180                 ;;
 181                 iscsi_password_in\=*)
 182                         ISCSI_PASSWORD_IN=`parse_opt "${x}"`
 183                 ;;
 184                 iscsi_debug\=*)
 185                         ISCSI_DEBUG=`parse_opt "${x}"`
 186                 ;;
 187                 # Crypto
 188                 crypt_root\=*)
 189                         CRYPT_ROOT=`parse_opt "${x}"`
 190                 ;;
 191                 crypt_swap\=*)
 192                         CRYPT_SWAP=`parse_opt "${x}"`
 193                 ;;
 194                 root_key\=*)
 195                         CRYPT_ROOT_KEY=`parse_opt "${x}"`
 196                 ;;
 197                 root_keydev\=*)
 198                         CRYPT_ROOT_KEYDEV=`parse_opt "${x}"`
 199                 ;;
 200                 swap_key\=*)
 201                         CRYPT_SWAP_KEY=`parse_opt "${x}"`
 202                 ;;
 203                 swap_keydev\=*)
 204                         CRYPT_SWAP_KEYDEV=`parse_opt "${x}"`
 205                 ;;
 206                 real_resume\=*|resume\=*)
 207                         REAL_RESUME=`parse_opt "${x}"`
 208                 ;;
 209                 noresume)
 210                         NORESUME=1
 211                 ;;
 212                 crypt_silent)
 213                         CRYPT_SILENT=1
 214                 ;;
 215                 real_rootflags\=*)
 216                         REAL_ROOTFLAGS=`parse_opt "${x}"`
 217                 ;;
 218                 keymap\=*)
 219                         keymap=`parse_opt "${x}"`
 220                 ;;
 221                 unionfs)
 222                         if [ ! -x /sbin/unionfs ]
 223                         then
 224                                 USE_UNIONFS_NORMAL=0
 225                                 bad_msg 'unionfs binary not found: aborting use of unionfs!'
 226                         else
 227                                 USE_UNIONFS_NORMAL=1
 228                         fi
 229                         ;;
 230                 nounionfs)
 231                         USE_UNIONFS_NORMAL=0
 232                         ;;
 233 #                 unionfs\=*)
 234 #                         if [ ! -x /sbin/unionfs ]
 235 #                         then
 236 #                                 USE_UNIONFS_NORMAL=0
 237 #                                 bad_msg 'unionfs binary not found: aborting use of unionfs!'
 238 #                         else
 239 #                                 USE_UNIONFS_NORMAL=1
 240 #                                 CMD_UNIONFS=`parse_opt "${x}"`
 241 #                                 echo ${CMD_UNIONFS}|grep , >/dev/null 2>&1
 242 #                                 if [ $? -eq 0 ]
 243 #                                 then
 244 #                                         UID=`echo ${CMD_UNIONFS#*,}`
 245 #                                         UNIONFS=`echo ${CMD_UNIONFS%,*}`
 246 #                                 else
 247 #                                         UNIONFS=${CMD_UNIONFS}
 248 #                                 fi
 249 #                         fi
 250 #                 ;;
 251         esac
 252 done
 253
 254 if [ -z "${REAL_ROOT}" -a \( "${CDROOT}" = '0' \)  -a \( "${FAKE_ROOT}" != "/dev/ram0" \) ]
 255 then
 256         REAL_ROOT="${FAKE_ROOT}"
 257 fi
 258
 259 splash 'init'
 260
 261 cmdline_hwopts
 262
 263 # Mount sysfs
 264 mount_sysfs
 265
 266 # Setup hotplugging for firmware loading
 267 setup_hotplug
 268
 269 # Load modules listed in MY_HWOPTS if /lib/modules exists for the running kernel
 270 if [ -z "${DO_modules}" ]
 271 then
 272         good_msg 'Skipping module load; disabled via commandline'
 273 elif [ -d "/lib/modules/${KV}" ]
 274 then
 275         good_msg 'Loading modules'
 276         # Load appropriate kernel modules
 277         if [ "${NODETECT}" != '1' ]
 278         then
 279                 for modules in ${MY_HWOPTS}
 280                 do
 281                         modules_scan ${modules}
 282                 done
 283         fi
 284         # Always eval doload=...
 285         modules_load ${MDOLIST}
 286 else
 287         good_msg 'Skipping module load; no modules in the ramdisk!'
 288 fi
 289
 290 # Apply scan delay if specified
 291 sdelay
 292
 293 # Setup slow USB bits
 294 setup_slowusb
 295
 296 # Start device manager
 297 start_dev_mgr
 298
 299 # if doslowusb is passed, pause other 10 seconds here, after mdev load
 300 [ "${DO_slowusb}" ] && sleep 10
 301
 302 # Start iSCSI
 303 startiscsi
 304
 305 # Setup btrfs, see bug 303529
 306 setup_btrfsctl
 307
 308 # Setup md device nodes if they dont exist
 309 setup_md_device
 310
 311 # Scan volumes
 312 startVolumes
 313
 314 setup_keymap
 315
 316 # Initialize LUKS root device except for livecd's
 317 if [ "${CDROOT}" != 1 ]
 318 then
 319         startLUKS
 320         if [ "${NORESUME}" != '1' ] && [ -n "${REAL_RESUME}" ]
 321         then
 322                 case "${REAL_RESUME}" in
 323                         LABEL\=*|UUID\=*)
 324
 325                                 RESUME_DEV=""
 326                                 retval=1
 327
 328                                 if [ ${retval} -ne 0 ]; then
 329                                         RESUME_DEV=`findfs "${REAL_RESUME}" 2>/dev/null`
 330                                         retval=$?
 331                                 fi
 332
 333                                 if [ ${retval} -ne 0 ]; then
 334                                         RESUME_DEV=`busybox findfs "${REAL_RESUME}" 2>/dev/null`
 335                                         retval=$?
 336                                 fi
 337
 338                                 if [ ${retval} -ne 0 ]; then
 339                                         RESUME_DEV=`blkid -l -t "${REAL_RESUME}" | cut -d ":" -f 1 2>/dev/null`
 340                                         retval=$?
 341                                 fi
 342
 343                                 if [ ${retval} -eq 0 ] && [ -n "${RESUME_DEV}" ]; then
 344                                         good_msg "Detected real_resume=${RESUME_DEV}"
 345                                         REAL_RESUME="${RESUME_DEV}"
 346                                 fi
 347                                 ;;
 348                 esac
 349
 350                 do_resume
 351         fi
 352 fi
 353
 354 mkdir -p "${NEW_ROOT}"
 355 CHROOT="${NEW_ROOT}"
 356
 357 # Run debug shell if requested
 358 rundebugshell
 359
 360 if [ "${CDROOT}" = '1' ]
 361 then
 362         good_msg "Making tmpfs for ${NEW_ROOT}"
 363         mount -n -t tmpfs tmpfs "${NEW_ROOT}"
 364
 365         for i in dev mnt mnt/cdrom mnt/livecd mnt/key tmp tmp/.initrd mnt/gentoo sys
 366         do
 367                 mkdir -p "${NEW_ROOT}/${i}"
 368                 chmod 755 "${NEW_ROOT}/${i}"
 369         done
 370         [ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
 371         [ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console c 5 1
 372
 373         # For SGI LiveCDs ...
 374         if [ "${LOOPTYPE}" = "sgimips" ]
 375         then
 376                 [ ! -e "${NEW_ROOT}/dev/sr0" ] && mknod "${NEW_ROOT}/dev/sr0" b 11 0
 377                 [ ! -e "${NEW_ROOT}/dev/loop0" ] && mknod "${NEW_ROOT}/dev/loop0" b 7 0
 378         fi
 379
 380         # Required for splash to work.  Not an issue with the initrd as this
 381         # device isn't created there and is not needed.
 382         if [ -e /dev/tty1 ]
 383         then
 384                 [ ! -e "${NEW_ROOT}/dev/tty1" ] && mknod "${NEW_ROOT}/dev/tty1" c 4 1
 385         fi
 386
 387         if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
 388         then
 389                 bootstrapCD
 390         fi
 391
 392         if [ "${REAL_ROOT}" = '' ]
 393         then
 394                 echo -n -e "${WARN}>>${NORMAL}${BOLD} No bootable medium found. Waiting for new devices"
 395
 396                 COUNTER=0
 397                 while [ ${COUNTER} -lt 3 ]; do
 398                         sleep 3
 399                         echo -n '.'
 400                         let COUNTER=${COUNTER}+1
 401                 done
 402
 403                 sleep 1
 404                 echo -e "${NORMAL}"
 405                 bootstrapCD
 406         fi
 407
 408         if [ "${REAL_ROOT}" = '' ]
 409         then
 410                 # Undo stuff
 411                 umount  "${NEW_ROOT}/dev" 2>/dev/null
 412                 umount  "${NEW_ROOT}/sys" 2>/dev/null
 413                 umount /sys 2>/dev/null
 414
 415                 umount  "${NEW_ROOT}"
 416                 rm -rf  "${NEW_ROOT}/*"
 417
 418                 bad_msg 'Could not find CD to boot, something else needed!'
 419                 CDROOT=0
 420         fi
 421 fi
 422
 423 # Determine root device
 424 good_msg 'Determining root device...'
 425 while true
 426 do
 427         while [ "${got_good_root}" != '1' ]
 428         do
 429                 case "${REAL_ROOT}" in
 430                         LABEL\=*|UUID\=*)
 431
 432                                 ROOT_DEV=""
 433                                 retval=1
 434
 435                                 if [ ${retval} -ne 0 ]; then
 436                                         ROOT_DEV=`findfs "${REAL_ROOT}" 2>/dev/null`
 437                                         retval=$?
 438                                 fi
 439
 440                                 if [ ${retval} -ne 0 ]; then
 441                                         ROOT_DEV=`busybox findfs "${REAL_ROOT}" 2>/dev/null`
 442                                         retval=$?
 443                                 fi
 444
 445                                 if [ ${retval} -ne 0 ]; then
 446                                         ROOT_DEV=`blkid -l -t "${REAL_ROOT}" | cut -d ":" -f 1 2>/dev/null`
 447                                         retval=$?
 448                                 fi
 449
 450                                 if [ ${retval} -eq 0 ] && [ -n "${ROOT_DEV}" ]; then
 451                                         good_msg "Detected real_root=${ROOT_DEV}"
 452                                         REAL_ROOT="${ROOT_DEV}"
 453                                 else
 454                                         whereis "REAL_ROOT" "root block device"
 455                                         got_good_root=0
 456                                         continue
 457                                 fi
 458                                 ;;
 459                 esac
 460
 461                 if [ "${REAL_ROOT}" = '' ]
 462                 then
 463                         # No REAL_ROOT determined/specified. Prompt user for root block device.
 464                         whereis "REAL_ROOT" "root block device"
 465                         got_good_root=0
 466
 467                 # Check for a block device or /dev/nfs
 468                 elif [ -b "${REAL_ROOT}" ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 469                 then
 470                         got_good_root=1
 471
 472                 else
 473                         bad_msg "Block device ${REAL_ROOT} is not a valid root device..."
 474                         REAL_ROOT=""
 475                         got_good_root=0
 476                 fi
 477         done
 478
 479
 480         if [ "${CDROOT}" = 1 -a "${got_good_root}" = '1' -a "${REAL_ROOT}" != "/dev/nfs" ]
 481         then
 482                 # CD already mounted; no further checks necessary
 483                 break
 484         elif [ "${LOOPTYPE}" = "sgimips" ]
 485         then
 486                 # sgimips mounts the livecd root partition directly
 487                 # there is no isofs filesystem to worry about
 488                 break
 489         else
 490                 good_msg "Mounting root..."
 491
 492                 # Try to mount the device as ${NEW_ROOT}
 493                 if [ "${REAL_ROOT}" = '/dev/nfs' ]; then
 494                         findnfsmount
 495                 else
 496                         # mount ro so fsck doesn't barf later
 497                         if [ "${REAL_ROOTFLAGS}" = '' ]; then
 498                                 mount -o ro ${REAL_ROOT} ${NEW_ROOT}
 499                         else
 500                                 good_msg "Using mount -o ro,${REAL_ROOTFLAGS}"
 501                                 mount -o ro,${REAL_ROOTFLAGS} ${REAL_ROOT} ${NEW_ROOT}
 502                         fi
 503                 fi
 504
 505                 # If mount is successful break out of the loop
 506                 # else not a good root and start over.
 507                 if [ "$?" = '0' ]
 508                 then
 509                         if [ -d ${NEW_ROOT}/dev -a -x ${NEW_ROOT}/sbin/init ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 510                         then
 511                                 break
 512                         else
 513                                 bad_msg "The filesystem mounted at ${REAL_ROOT} does not appear to be a valid /, try again"
 514                                 got_good_root=0
 515                                 REAL_ROOT=''
 516                         fi
 517                 else
 518                         bad_msg "Could not mount specified ROOT, try again"
 519                         got_good_root=0
 520                         REAL_ROOT=''
 521                 fi
 522         fi
 523 done
 524 # End determine root device
 525
 526 #verbose_kmsg
 527
 528 # If CD root is set determine the looptype to boot
 529 if [ "${CDROOT}" = '1' ]
 530 then
 531         good_msg 'Determining looptype ...'
 532         cd "${NEW_ROOT}"
 533
 534         # Find loop and looptype
 535         [ -z "${LOOP}" ] && find_loop
 536         [ -z "${LOOPTYPE}" ] && find_looptype
 537
 538         cache_cd_contents
 539
 540         # If encrypted, find key and mount, otherwise mount as usual
 541         if [ -n "${CRYPT_ROOT}" ]
 542         then
 543                 CRYPT_ROOT_KEY="$(head -n 1 ${NEW_ROOT}/mnt/cdrom/livecd)"
 544                 CRYPT_ROOT='/dev/loop0'
 545                 good_msg 'You booted an encrypted livecd' "${CRYPT_SILENT}"
 546
 547                 losetup /dev/loop0 "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}"
 548                 test_success 'Preparing loop filesystem'
 549
 550                 startLUKS
 551
 552                 case ${LOOPTYPE} in
 553                         normal)
 554                                 MOUNTTYPE="ext2"
 555                                 ;;
 556                         *)
 557                                 MOUNTTYPE="${LOOPTYPE}"
 558                                 ;;
 559                 esac
 560                 mount -t "${MOUNTTYPE}" -o ro /dev/mapper/root "${NEW_ROOT}/mnt/livecd"
 561                 test_success 'Mount filesystem'
 562                 FS_LOCATION='mnt/livecd'
 563         # Setup the loopback mounts, if unencrypted
 564         else
 565                 if [ "${LOOPTYPE}" = 'normal' ]
 566                 then
 567                         good_msg 'Mounting loop filesystem'
 568                         mount -t ext2 -o loop,ro "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 569                         test_success 'Mount filesystem'
 570                         FS_LOCATION='mnt/livecd'
 571                 elif [ "${LOOPTYPE}" = 'squashfs' ]
 572                 then
 573                         good_msg 'Mounting squashfs filesystem'
 574                         mount -t squashfs -o loop,ro "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 575                         test_success 'Mount filesystem'
 576                         FS_LOCATION='mnt/livecd'
 577                 elif [ "${LOOPTYPE}" = 'gcloop' ]
 578                 then
 579                         good_msg 'Mounting gcloop filesystem'
 580                         echo ' ' | losetup -E 19 -e ucl-0 -p0 "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}"
 581                         test_success 'losetup the loop device'
 582
 583                         mount -t ext2 -o ro "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/livecd"
 584                         test_success 'Mount the losetup loop device'
 585                         FS_LOCATION='mnt/livecd'
 586                 elif [ "${LOOPTYPE}" = 'zisofs' ]
 587                 then
 588                         FS_LOCATION="mnt/cdrom/${LOOPEXT}${LOOP}"
 589                 elif [ "${LOOPTYPE}" = 'noloop' ]
 590                 then
 591                         FS_LOCATION='mnt/cdrom'
 592                 elif [ "${LOOPTYPE}" = 'sgimips' ]
 593                 then
 594                         # getdvhoff finds the starting offset (in bytes) of the squashfs
 595                         # partition on the cdrom and returns this offset for losetup
 596                         #
 597                         # All currently supported SGI Systems use SCSI CD-ROMs, so
 598                         # so we know that the CD-ROM is usually going to be /dev/sr0.
 599                         #
 600                         # We use the value given to losetup to set /dev/loop0 to point
 601                         # to the liveCD root partition, and then mount /dev/loop0 as
 602                         # the LiveCD rootfs
 603                         good_msg 'Locating the SGI LiveCD Root Partition'
 604                         echo ' ' | \
 605                                 losetup -o $(getdvhoff "${NEW_ROOT}${REAL_ROOT}" 0) \
 606                                         "${NEW_ROOT}${CDROOT_DEV}" \
 607                                         "${NEW_ROOT}${REAL_ROOT}"
 608                         test_success 'losetup /dev/sr0 /dev/loop0'
 609
 610                         good_msg 'Mounting the Root Partition'
 611                         mount -t squashfs -o ro "${NEW_ROOT}${CDROOT_DEV}" "${NEW_ROOT}/mnt/livecd"
 612                         test_success 'mount /dev/loop0 /'
 613                         FS_LOCATION='mnt/livecd'
 614                 fi
 615         fi
 616
 617
 618
 619         # Unpacking additional packages from NFS mount
 620         # This is useful for adding kernel modules to /lib
 621         # We do this now, so that additional packages can add whereever they want.
 622         if [ "${REAL_ROOT}" = '/dev/nfs' ]
 623         then
 624                 if [ -e "${NEW_ROOT}/mnt/cdrom/add" ]
 625                 then
 626                                 for targz in `ls ${NEW_ROOT}/mnt/cdrom/add/*.tar.gz`
 627                                 do
 628                                         tarname=`basename ${targz}`
 629                                         good_msg "Adding additional package ${tarname}"
 630                                         (cd ${NEW_ROOT} ; /bin/tar -xzf ${targz})
 631                                 done
 632                 fi
 633         fi
 634
 635
 636         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 637         then
 638                 setup_unionfs ${NEW_ROOT} ${NEW_ROOT}/${FS_LOCATION}
 639                 CHROOT=/union
 640         else
 641
 642         good_msg "Copying read-write image contents to tmpfs"
 643         # Copy over stuff that should be writable
 644         (cd "${NEW_ROOT}/${FS_LOCATION}"; cp -a ${ROOT_TREES} "${NEW_ROOT}")
 645
 646         # Now we do the links.
 647         for x in ${ROOT_LINKS}
 648         do
 649                 if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
 650                 then
 651                         ln -s "`readlink ${NEW_ROOT}/${FS_LOCATION}/${x}`" "${x}" 2>/dev/null
 652                 else
 653                         # List all subdirectories of x
 654                         find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null | while read directory
 655                         do
 656                                 # Strip the prefix of the FS_LOCATION
 657                                 directory="${directory#${NEW_ROOT}/${FS_LOCATION}/}"
 658
 659                                 # Skip this directory if we already linked a parent directory
 660                                 if [ "${current_parent}" != '' ]; then
 661                                         var=`echo "${directory}" | grep "^${current_parent}"`
 662                                         if [ "${var}" != '' ]; then
 663                                                 continue
 664                                         fi
 665                                 fi
 666                                 # Test if the directory exists already
 667                                 if [ -e "/${NEW_ROOT}/${directory}" ]
 668                                 then
 669                                         # It does exist, link all the individual files
 670                                         for file in `ls /${NEW_ROOT}/${FS_LOCATION}/${directory}`
 671                                         do
 672                                         if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ] && [ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
 673                                                         ln -s "/${FS_LOCATION}/${directory}/${file}" "${directory}/${file}" 2> /dev/null
 674                                                 fi
 675                                         done
 676                                 else
 677                                         # It does not exist, make a link to the livecd
 678                                         ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
 679                                         current_parent="${directory}"
 680                                 fi
 681                         done
 682                 fi
 683         done
 684
 685         mkdir initramfs proc tmp sys 2>/dev/null
 686         chmod 1777 tmp
 687
 688         fi
 689
 690         #UML=`cat /proc/cpuinfo|grep UML|sed -e 's|model name.*: ||'`
 691         #if [ "${UML}" = 'UML' ]
 692         #then
 693         #       # UML Fixes
 694         #       good_msg 'Updating for uml system'
 695         #fi
 696
 697         # Let Init scripts know that we booted from CD
 698         export CDBOOT
 699         CDBOOT=1
 700 else
 701         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 702         then
 703                 mkdir /union_changes
 704                 mount -t tmpfs tmpfs /union_changes
 705                 setup_unionfs /union_changes ${NEW_ROOT}
 706                 mkdir -p ${UNION}/tmp/.initrd
 707         fi
 708 fi
 709
 710 # Execute script on the cdrom just before boot to update things if necessary
 711 cdupdate
 712
 713 if [ "${SUBDIR}" != '' -a -e "${CHROOT}/${SUBDIR}" ]
 714 then
 715         good_msg "Entering ${SUBDIR} to boot"
 716         CHROOT="${CHROOT}/${SUBDIR}"
 717 fi
 718
 719 verbose_kmsg
 720
 721 echo -ne "${GOOD}>>${NORMAL}${BOLD} Booting (initramfs)${NORMAL}"
 722 if [ ! -e "${CHROOT}/dev/console" ] || [ ! -e "${CHROOT}/dev/null" ]
 723 then
 724         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing files required to boot (console and null)${NORMAL}"
 725 elif [ -e /etc/initrd.splash -a ! -e "${CHROOT}/dev/tty1" ]
 726 then
 727         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing tty1, which is required for splash${NORMAL}"
 728 fi
 729
 730 cd "${CHROOT}"
 731 mkdir "${CHROOT}/proc" "${CHROOT}/sys" 2>/dev/null
 732 echo -ne "${BOLD}.${NORMAL}"
 733 umount /sys || echo '*: Failed to unmount the ramdisk /sys!'
 734 umount /proc || echo '*: Failed to unmount the ramdisk /proc!'
 735 echo -e "${BOLD}.${NORMAL}"
 736
 737 exec /sbin/switch_root -c "/dev/console" "${CHROOT}" "${REAL_INIT:-/sbin/init}" "${INIT_OPTS}"
 738
 739 # If we get here, something bad has happened
 740 splash 'verbose'
 741
 742 echo 'A fatal error has probably occured since /sbin/init did not'
 743 echo 'boot correctly. Trying to open a shell...'
 744 echo
 745 exec /bin/bash
 746 exec /bin/sh
 747 exec /bin/ash
 748 exec sh