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 #                       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 ${MDOLIST}
 285 else
 286         good_msg 'Skipping module load; no modules in the ramdisk!'
 287 fi
 288
 289 # Apply scan delay if specified
 290 sdelay
 291
 292 # Setup slow USB bits
 293 setup_slowusb
 294
 295 # Start device manager
 296 start_dev_mgr
 297
 298 # if doslowusb is passed, pause other 10 seconds here, after mdev load
 299 [ "${DO_slowusb}" ] && sleep 10
 300
 301 # Start iSCSI
 302 startiscsi
 303
 304 # let iscsid settle - otherwise mounting the iSCSI-disk will fail (very rarely, though)
 305 sleep 1
 306
 307 # Setup btrfs, see bug 303529
 308 setup_btrfsctl
 309
 310 # Setup md device nodes if they dont exist
 311 setup_md_device
 312
 313 # Scan volumes
 314 startVolumes
 315
 316 setup_keymap
 317
 318 # Initialize LUKS root device except for livecd's
 319 if [ "${CDROOT}" != 1 ]
 320 then
 321         startLUKS
 322         if [ "${NORESUME}" != '1' ] && [ -n "${REAL_RESUME}" ]
 323         then
 324                 case "${REAL_RESUME}" in
 325                         LABEL\=*|UUID\=*)
 326
 327                                 RESUME_DEV=""
 328                                 retval=1
 329
 330                                 if [ ${retval} -ne 0 ]; then
 331                                         RESUME_DEV=`findfs "${REAL_RESUME}" 2>/dev/null`
 332                                         retval=$?
 333                                 fi
 334
 335                                 if [ ${retval} -ne 0 ]; then
 336                                         RESUME_DEV=`busybox findfs "${REAL_RESUME}" 2>/dev/null`
 337                                         retval=$?
 338                                 fi
 339
 340                                 if [ ${retval} -ne 0 ]; then
 341                                         RESUME_DEV=`blkid -l -t "${REAL_RESUME}" | cut -d ":" -f 1 2>/dev/null`
 342                                         retval=$?
 343                                 fi
 344
 345                                 if [ ${retval} -eq 0 ] && [ -n "${RESUME_DEV}" ]; then
 346                                         good_msg "Detected real_resume=${RESUME_DEV}"
 347                                         REAL_RESUME="${RESUME_DEV}"
 348                                 fi
 349                                 ;;
 350                 esac
 351
 352                 do_resume
 353         fi
 354 fi
 355
 356 mkdir -p "${NEW_ROOT}"
 357 CHROOT="${NEW_ROOT}"
 358
 359 # Run debug shell if requested
 360 rundebugshell
 361
 362 if [ "${CDROOT}" = '1' ]
 363 then
 364         good_msg "Making tmpfs for ${NEW_ROOT}"
 365         mount -n -t tmpfs tmpfs "${NEW_ROOT}"
 366
 367         for i in dev mnt mnt/cdrom mnt/livecd mnt/key tmp tmp/.initrd mnt/gentoo sys
 368         do
 369                 mkdir -p "${NEW_ROOT}/${i}"
 370                 chmod 755 "${NEW_ROOT}/${i}"
 371         done
 372         [ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
 373         [ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console c 5 1
 374
 375         # For SGI LiveCDs ...
 376         if [ "${LOOPTYPE}" = "sgimips" ]
 377         then
 378                 [ ! -e "${NEW_ROOT}/dev/sr0" ] && mknod "${NEW_ROOT}/dev/sr0" b 11 0
 379                 [ ! -e "${NEW_ROOT}/dev/loop0" ] && mknod "${NEW_ROOT}/dev/loop0" b 7 0
 380         fi
 381
 382         # Required for splash to work.  Not an issue with the initrd as this
 383         # device isn't created there and is not needed.
 384         if [ -e /dev/tty1 ]
 385         then
 386                 [ ! -e "${NEW_ROOT}/dev/tty1" ] && mknod "${NEW_ROOT}/dev/tty1" c 4 1
 387         fi
 388
 389         if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
 390         then
 391                 bootstrapCD
 392         fi
 393
 394         if [ "${REAL_ROOT}" = '' ]
 395         then
 396                 echo -n -e "${WARN}>>${NORMAL}${BOLD} No bootable medium found. Waiting for new devices"
 397
 398                 COUNTER=0
 399                 while [ ${COUNTER} -lt 3 ]; do
 400                         sleep 3
 401                         echo -n '.'
 402                         let COUNTER=${COUNTER}+1
 403                 done
 404
 405                 sleep 1
 406                 echo -e "${NORMAL}"
 407                 bootstrapCD
 408         fi
 409
 410         if [ "${REAL_ROOT}" = '' ]
 411         then
 412                 # Undo stuff
 413                 umount  "${NEW_ROOT}/dev" 2>/dev/null
 414                 umount  "${NEW_ROOT}/sys" 2>/dev/null
 415                 umount /sys 2>/dev/null
 416
 417                 umount  "${NEW_ROOT}"
 418                 rm -rf  "${NEW_ROOT}/*"
 419
 420                 bad_msg 'Could not find CD to boot, something else needed!'
 421                 CDROOT=0
 422         fi
 423 fi
 424
 425 # Determine root device
 426 good_msg 'Determining root device...'
 427 while true
 428 do
 429         while [ "${got_good_root}" != '1' ]
 430         do
 431                 case "${REAL_ROOT}" in
 432                         LABEL\=*|UUID\=*)
 433
 434                                 ROOT_DEV=""
 435                                 retval=1
 436
 437                                 if [ ${retval} -ne 0 ]; then
 438                                         ROOT_DEV=`findfs "${REAL_ROOT}" 2>/dev/null`
 439                                         retval=$?
 440                                 fi
 441
 442                                 if [ ${retval} -ne 0 ]; then
 443                                         ROOT_DEV=`busybox findfs "${REAL_ROOT}" 2>/dev/null`
 444                                         retval=$?
 445                                 fi
 446
 447                                 if [ ${retval} -ne 0 ]; then
 448                                         ROOT_DEV=`blkid -l -t "${REAL_ROOT}" | cut -d ":" -f 1 2>/dev/null`
 449                                         retval=$?
 450                                 fi
 451
 452                                 if [ ${retval} -eq 0 ] && [ -n "${ROOT_DEV}" ]; then
 453                                         good_msg "Detected real_root=${ROOT_DEV}"
 454                                         REAL_ROOT="${ROOT_DEV}"
 455                                 else
 456                                         whereis "REAL_ROOT" "root block device"
 457                                         got_good_root=0
 458                                         continue
 459                                 fi
 460                                 ;;
 461                 esac
 462
 463                 if [ "${REAL_ROOT}" = '' ]
 464                 then
 465                         # No REAL_ROOT determined/specified. Prompt user for root block device.
 466                         whereis "REAL_ROOT" "root block device"
 467                         got_good_root=0
 468
 469                 # Check for a block device or /dev/nfs
 470                 elif [ -b "${REAL_ROOT}" ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 471                 then
 472                         got_good_root=1
 473
 474                 else
 475                         bad_msg "Block device ${REAL_ROOT} is not a valid root device..."
 476                         REAL_ROOT=""
 477                         got_good_root=0
 478                 fi
 479         done
 480
 481
 482         if [ "${CDROOT}" = 1 -a "${got_good_root}" = '1' -a "${REAL_ROOT}" != "/dev/nfs" ]
 483         then
 484                 # CD already mounted; no further checks necessary
 485                 break
 486         elif [ "${LOOPTYPE}" = "sgimips" ]
 487         then
 488                 # sgimips mounts the livecd root partition directly
 489                 # there is no isofs filesystem to worry about
 490                 break
 491         else
 492                 good_msg "Mounting root..."
 493
 494                 # Try to mount the device as ${NEW_ROOT}
 495                 if [ "${REAL_ROOT}" = '/dev/nfs' ]; then
 496                         findnfsmount
 497                 else
 498                         # mount ro so fsck doesn't barf later
 499                         if [ "${REAL_ROOTFLAGS}" = '' ]; then
 500                                 mount -o ro ${REAL_ROOT} ${NEW_ROOT}
 501                         else
 502                                 good_msg "Using mount -o ro,${REAL_ROOTFLAGS}"
 503                                 mount -o ro,${REAL_ROOTFLAGS} ${REAL_ROOT} ${NEW_ROOT}
 504                         fi
 505                 fi
 506
 507                 # If mount is successful break out of the loop
 508                 # else not a good root and start over.
 509                 if [ "$?" = '0' ]
 510                 then
 511                         if [ -d ${NEW_ROOT}/dev -a -x ${NEW_ROOT}/sbin/init ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 512                         then
 513                                 break
 514                         else
 515                                 bad_msg "The filesystem mounted at ${REAL_ROOT} does not appear to be a valid /, try again"
 516                                 got_good_root=0
 517                                 REAL_ROOT=''
 518                         fi
 519                 else
 520                         bad_msg "Could not mount specified ROOT, try again"
 521                         got_good_root=0
 522                         REAL_ROOT=''
 523                 fi
 524         fi
 525 done
 526 # End determine root device
 527
 528 #verbose_kmsg
 529
 530 # If CD root is set determine the looptype to boot
 531 if [ "${CDROOT}" = '1' ]
 532 then
 533         good_msg 'Determining looptype ...'
 534         cd "${NEW_ROOT}"
 535
 536         # Find loop and looptype
 537         [ -z "${LOOP}" ] && find_loop
 538         [ -z "${LOOPTYPE}" ] && find_looptype
 539
 540         cache_cd_contents
 541
 542         # If encrypted, find key and mount, otherwise mount as usual
 543         if [ -n "${CRYPT_ROOT}" ]
 544         then
 545                 CRYPT_ROOT_KEY="$(head -n 1 ${NEW_ROOT}/mnt/cdrom/livecd)"
 546                 CRYPT_ROOT='/dev/loop0'
 547                 good_msg 'You booted an encrypted livecd' "${CRYPT_SILENT}"
 548
 549                 losetup /dev/loop0 "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}"
 550                 test_success 'Preparing loop filesystem'
 551
 552                 startLUKS
 553
 554                 case ${LOOPTYPE} in
 555                         normal)
 556                                 MOUNTTYPE="ext2"
 557                                 ;;
 558                         *)
 559                                 MOUNTTYPE="${LOOPTYPE}"
 560                                 ;;
 561                 esac
 562                 mount -t "${MOUNTTYPE}" -o ro /dev/mapper/root "${NEW_ROOT}/mnt/livecd"
 563                 test_success 'Mount filesystem'
 564                 FS_LOCATION='mnt/livecd'
 565         # Setup the loopback mounts, if unencrypted
 566         else
 567                 if [ "${LOOPTYPE}" = 'normal' ]
 568                 then
 569                         good_msg 'Mounting loop filesystem'
 570                         mount -t ext2 -o loop,ro "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 571                         test_success 'Mount filesystem'
 572                         FS_LOCATION='mnt/livecd'
 573                 elif [ "${LOOPTYPE}" = 'squashfs' ]
 574                 then
 575                         good_msg 'Mounting squashfs filesystem'
 576                         mount -t squashfs -o loop,ro "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 577                         test_success 'Mount filesystem'
 578                         FS_LOCATION='mnt/livecd'
 579                 elif [ "${LOOPTYPE}" = 'gcloop' ]
 580                 then
 581                         good_msg 'Mounting gcloop filesystem'
 582                         echo ' ' | losetup -E 19 -e ucl-0 -p0 "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}"
 583                         test_success 'losetup the loop device'
 584
 585                         mount -t ext2 -o ro "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/livecd"
 586                         test_success 'Mount the losetup loop device'
 587                         FS_LOCATION='mnt/livecd'
 588                 elif [ "${LOOPTYPE}" = 'zisofs' ]
 589                 then
 590                         FS_LOCATION="mnt/cdrom/${LOOPEXT}${LOOP}"
 591                 elif [ "${LOOPTYPE}" = 'noloop' ]
 592                 then
 593                         FS_LOCATION='mnt/cdrom'
 594                 elif [ "${LOOPTYPE}" = 'sgimips' ]
 595                 then
 596                         # getdvhoff finds the starting offset (in bytes) of the squashfs
 597                         # partition on the cdrom and returns this offset for losetup
 598                         #
 599                         # All currently supported SGI Systems use SCSI CD-ROMs, so
 600                         # so we know that the CD-ROM is usually going to be /dev/sr0.
 601                         #
 602                         # We use the value given to losetup to set /dev/loop0 to point
 603                         # to the liveCD root partition, and then mount /dev/loop0 as
 604                         # the LiveCD rootfs
 605                         good_msg 'Locating the SGI LiveCD Root Partition'
 606                         echo ' ' | \
 607                                 losetup -o $(getdvhoff "${NEW_ROOT}${REAL_ROOT}" 0) \
 608                                         "${NEW_ROOT}${CDROOT_DEV}" \
 609                                         "${NEW_ROOT}${REAL_ROOT}"
 610                         test_success 'losetup /dev/sr0 /dev/loop0'
 611
 612                         good_msg 'Mounting the Root Partition'
 613                         mount -t squashfs -o ro "${NEW_ROOT}${CDROOT_DEV}" "${NEW_ROOT}/mnt/livecd"
 614                         test_success 'mount /dev/loop0 /'
 615                         FS_LOCATION='mnt/livecd'
 616                 fi
 617         fi
 618
 619
 620
 621         # Unpacking additional packages from NFS mount
 622         # This is useful for adding kernel modules to /lib
 623         # We do this now, so that additional packages can add whereever they want.
 624         if [ "${REAL_ROOT}" = '/dev/nfs' ]
 625         then
 626                 if [ -e "${NEW_ROOT}/mnt/cdrom/add" ]
 627                 then
 628                                 for targz in `ls ${NEW_ROOT}/mnt/cdrom/add/*.tar.gz`
 629                                 do
 630                                         tarname=`basename ${targz}`
 631                                         good_msg "Adding additional package ${tarname}"
 632                                         (cd ${NEW_ROOT} ; /bin/tar -xzf ${targz})
 633                                 done
 634                 fi
 635         fi
 636
 637
 638         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 639         then
 640                 setup_unionfs ${NEW_ROOT} ${NEW_ROOT}/${FS_LOCATION}
 641                 CHROOT=/union
 642         else
 643
 644         good_msg "Copying read-write image contents to tmpfs"
 645         # Copy over stuff that should be writable
 646         (cd "${NEW_ROOT}/${FS_LOCATION}"; cp -a ${ROOT_TREES} "${NEW_ROOT}")
 647
 648         # Now we do the links.
 649         for x in ${ROOT_LINKS}
 650         do
 651                 if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
 652                 then
 653                         ln -s "`readlink ${NEW_ROOT}/${FS_LOCATION}/${x}`" "${x}" 2>/dev/null
 654                 else
 655                         # List all subdirectories of x
 656                         find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null | while read directory
 657                         do
 658                                 # Strip the prefix of the FS_LOCATION
 659                                 directory="${directory#${NEW_ROOT}/${FS_LOCATION}/}"
 660
 661                                 # Skip this directory if we already linked a parent directory
 662                                 if [ "${current_parent}" != '' ]; then
 663                                         var=`echo "${directory}" | grep "^${current_parent}"`
 664                                         if [ "${var}" != '' ]; then
 665                                                 continue
 666                                         fi
 667                                 fi
 668                                 # Test if the directory exists already
 669                                 if [ -e "/${NEW_ROOT}/${directory}" ]
 670                                 then
 671                                         # It does exist, link all the individual files
 672                                         for file in `ls /${NEW_ROOT}/${FS_LOCATION}/${directory}`
 673                                         do
 674                                         if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ] && [ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
 675                                                         ln -s "/${FS_LOCATION}/${directory}/${file}" "${directory}/${file}" 2> /dev/null
 676                                                 fi
 677                                         done
 678                                 else
 679                                         # It does not exist, make a link to the livecd
 680                                         ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
 681                                         current_parent="${directory}"
 682                                 fi
 683                         done
 684                 fi
 685         done
 686
 687         mkdir initramfs proc tmp sys 2>/dev/null
 688         chmod 1777 tmp
 689
 690         fi
 691
 692         #UML=`cat /proc/cpuinfo|grep UML|sed -e 's|model name.*: ||'`
 693         #if [ "${UML}" = 'UML' ]
 694         #then
 695         #       # UML Fixes
 696         #       good_msg 'Updating for uml system'
 697         #fi
 698
 699         # Let Init scripts know that we booted from CD
 700         export CDBOOT
 701         CDBOOT=1
 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