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 -o noexec,nosuid,nodev 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 quiet_kmsg
  35
  36 CMDLINE=`cat /proc/cmdline`
  37 # Scan CMDLINE for any specified real_root= or cdroot arguments
  38 FAKE_ROOT=''
  39 REAL_ROOTFLAGS=''
  40 ROOTFSTYPE='auto'
  41 CRYPT_SILENT=0
  42 for x in ${CMDLINE}
  43 do
  44         case "${x}" in
  45                 real_root\=*)
  46                         REAL_ROOT=`parse_opt "${x}"`
  47                 ;;
  48                 root\=*)
  49                         FAKE_ROOT=`parse_opt "${x}"`
  50                 ;;
  51                 subdir\=*)
  52                         SUBDIR=`parse_opt "${x}"`
  53                 ;;
  54                 real_init\=*)
  55                         REAL_INIT=`parse_opt "${x}"`
  56                 ;;
  57                 init_opts\=*)
  58                         INIT_OPTS=`parse_opt "${x}"`
  59                 ;;
  60                 # Livecd options
  61                 cdroot)
  62                         CDROOT=1
  63                 ;;
  64                 cdroot\=*)
  65                         CDROOT=1
  66                         CDROOT_DEV=`parse_opt "${x}"`
  67                 ;;
  68                 cdroot_type\=*)
  69                         CDROOT_TYPE=`parse_opt "${x}"`
  70                 ;;
  71                 # Start livecd loop, looptype options
  72                 loop\=*)
  73                         LOOP=`parse_opt "${x}"`
  74                 ;;
  75                 looptype\=*)
  76                         LOOPTYPE=`parse_opt "${x}"`
  77                 ;;
  78                 isoboot\=*)
  79                         ISOBOOT=`parse_opt "${x}"`
  80                 ;;
  81                 # Start Volume manager options
  82                 dolvm)
  83                         USE_LVM_NORMAL=1
  84                 ;;
  85                 dolvm2)
  86                         bad_msg 'Using dolvm2 is deprecated, use dolvm, instead.'
  87                         USE_LVM_NORMAL=1
  88                 ;;
  89                 domdadm)
  90                         USE_MDADM=1
  91                 ;;
  92                 dodmraid)
  93                         USE_DMRAID_NORMAL=1
  94                 ;;
  95                 dodmraid\=*)
  96                         DMRAID_OPTS=`parse_opt "${x}"`
  97                         USE_DMRAID_NORMAL=1
  98                 ;;
  99                 doevms)
 100                         USE_EVMS_NORMAL=1
 101                 ;;
 102                 doevms2)
 103                         bad_msg 'Using doevms2 is deprecated, use doevms, instead.'
 104                         USE_EVMS_NORMAL=1
 105                 ;;
 106                 # Debug Options
 107                 debug)
 108                         DEBUG='yes'
 109                 ;;
 110                 # Scan delay options
 111                 scandelay\=*)
 112                         SDELAY=`parse_opt "${x}"`
 113                 ;;
 114                 scandelay)
 115                         SDELAY=3
 116                 ;;
 117                 # Module no-loads
 118                 doload\=*)
 119                         MDOLIST=`parse_opt "${x}"`
 120                         MDOLIST="`echo ${MDOLIST} | sed -e 's/,/ /g'`"
 121                 ;;
 122                 nodetect)
 123                         NODETECT=1
 124                 ;;
 125                 noload\=*)
 126                         MLIST=`parse_opt "${x}"`
 127                         MLIST="`echo ${MLIST} | sed -e 's/,/ /g'`"
 128                         export MLIST
 129                 ;;
 130                 # Redirect output to a specific tty
 131                 CONSOLE\=*|console\=*)
 132                         CONSOLE=`parse_opt "${x}"`
 133                         CONSOLE=`basename ${CONSOLE}`
 134 #                       exec >${CONSOLE} <${CONSOLE} 2>&1
 135                 ;;
 136                 # /dev/md
 137                 lvmraid\=*)
 138                         RAID_DEVICES="`parse_opt ${x}`"
 139                         RAID_DEVICES="`echo ${RAID_DEVICES} | sed -e 's/,/ /g'`"
 140                         USE_LVM_NORMAL=1
 141                 ;;
 142                 part\=*)
 143                         MDPART=`parse_opt "${x}"`
 144                 ;;
 145                 # NFS
 146                 ip\=*)
 147                         IP=`parse_opt "${x}"`
 148                 ;;
 149                 nfsroot\=*)
 150                         NFSROOT=`parse_opt "${x}"`
 151                 ;;
 152                 # iSCSI
 153                 iscsi_initiatorname\=*)
 154                         ISCSI_INITIATORNAME=`parse_opt "${x}"`
 155                 ;;
 156                 iscsi_target\=*)
 157                         ISCSI_TARGET=`parse_opt "${x}"`
 158                 ;;
 159                 iscsi_tgpt\=*)
 160                         ISCSI_TGPT=`parse_opt "${x}"`
 161                 ;;
 162                 iscsi_address\=*)
 163                         ISCSI_ADDRESS=`parse_opt "${x}"`
 164                 ;;
 165                 iscsi_port\=*)
 166                         ISCSI_PORT=`parse_opt "${x}"`
 167                 ;;
 168                 iscsi_username\=*)
 169                         ISCSI_USERNAME=`parse_opt "${x}"`
 170                 ;;
 171                 iscsi_password\=*)
 172                         ISCSI_PASSWORD=`parse_opt "${x}"`
 173                 ;;
 174                 iscsi_username_in\=*)
 175                         ISCSI_USERNAME_IN=`parse_opt "${x}"`
 176                 ;;
 177                 iscsi_password_in\=*)
 178                         ISCSI_PASSWORD_IN=`parse_opt "${x}"`
 179                 ;;
 180                 iscsi_debug\=*)
 181                         ISCSI_DEBUG=`parse_opt "${x}"`
 182                 ;;
 183                 iscsi_noibft)
 184                         ISCSI_NOIBFT=1
 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                 rootfstype\=*)
 218                         ROOTFSTYPE=`parse_opt "${x}"`
 219                 ;;
 220                 keymap\=*)
 221                         keymap=`parse_opt "${x}"`
 222                 ;;
 223                 unionfs)
 224                         if [ ! -x /sbin/unionfs ]
 225                         then
 226                                 USE_UNIONFS_NORMAL=0
 227                                 bad_msg 'unionfs binary not found: aborting use of unionfs!'
 228                         else
 229                                 USE_UNIONFS_NORMAL=1
 230                         fi
 231                         ;;
 232                 nounionfs)
 233                         USE_UNIONFS_NORMAL=0
 234                         ;;
 235 #                 unionfs\=*)
 236 #                         if [ ! -x /sbin/unionfs ]
 237 #                         then
 238 #                                 USE_UNIONFS_NORMAL=0
 239 #                                 bad_msg 'unionfs binary not found: aborting use of unionfs!'
 240 #                         else
 241 #                                 USE_UNIONFS_NORMAL=1
 242 #                                 CMD_UNIONFS=`parse_opt "${x}"`
 243 #                                 echo ${CMD_UNIONFS}|grep , >/dev/null 2>&1
 244 #                                 if [ $? -eq 0 ]
 245 #                                 then
 246 #                                         UID=`echo ${CMD_UNIONFS#*,}`
 247 #                                         UNIONFS=`echo ${CMD_UNIONFS%,*}`
 248 #                                 else
 249 #                                         UNIONFS=${CMD_UNIONFS}
 250 #                                 fi
 251 #                         fi
 252 #                 ;;
 253         esac
 254 done
 255
 256 if [ -z "${REAL_ROOT}" -a \( "${CDROOT}" = '0' \)  -a \( "${FAKE_ROOT}" != "/dev/ram0" \) ]
 257 then
 258         REAL_ROOT="${FAKE_ROOT}"
 259 fi
 260
 261 splash 'init'
 262
 263 cmdline_hwopts
 264
 265 # Mount sysfs
 266 mount_sysfs
 267
 268 # Setup hotplugging for firmware loading
 269 setup_hotplug
 270
 271 # Load modules listed in MY_HWOPTS if /lib/modules exists for the running kernel
 272 if [ -z "${DO_modules}" ]
 273 then
 274         good_msg 'Skipping module load; disabled via commandline'
 275 elif [ -d "/lib/modules/${KV}" ]
 276 then
 277         good_msg 'Loading modules'
 278         # Load appropriate kernel modules
 279         if [ "${NODETECT}" != '1' ]
 280         then
 281                 for modules in ${MY_HWOPTS}
 282                 do
 283                         modules_scan ${modules}
 284                 done
 285         fi
 286         # Always eval doload=...
 287         modules_load ${MDOLIST}
 288 else
 289         good_msg 'Skipping module load; no modules in the ramdisk!'
 290 fi
 291
 292 # Apply scan delay if specified
 293 sdelay
 294
 295 # Setup slow USB bits
 296 setup_slowusb
 297
 298 # Start device manager
 299 start_dev_mgr
 300
 301 # if doslowusb is passed, pause other 10 seconds here, after mdev load
 302 [ "${DO_slowusb}" ] && sleep 10
 303
 304 # Start iSCSI
 305 if [ -e /bin/iscsistart ]
 306 then
 307         startiscsi
 308 fi
 309
 310 # Setup btrfs, see bug 303529
 311 setup_btrfsctl
 312
 313 # Setup md device nodes if they dont exist
 314 setup_md_device
 315
 316 # Scan volumes
 317 startVolumes
 318
 319 setup_keymap
 320
 321 # Initialize LUKS root device except for livecd's
 322 if [ "${CDROOT}" != 1 ]
 323 then
 324         startLUKS
 325         if [ "${NORESUME}" != '1' ] && [ -n "${REAL_RESUME}" ]
 326         then
 327                 case "${REAL_RESUME}" in
 328                         LABEL\=*|UUID\=*)
 329
 330                                 RESUME_DEV=""
 331                                 retval=1
 332
 333                                 if [ ${retval} -ne 0 ]; then
 334                                         RESUME_DEV=`findfs "${REAL_RESUME}" 2>/dev/null`
 335                                         retval=$?
 336                                 fi
 337
 338                                 if [ ${retval} -ne 0 ]; then
 339                                         RESUME_DEV=`busybox findfs "${REAL_RESUME}" 2>/dev/null`
 340                                         retval=$?
 341                                 fi
 342
 343                                 if [ ${retval} -ne 0 ]; then
 344                                         RESUME_DEV=`blkid -l -t "${REAL_RESUME}" | cut -d ":" -f 1 2>/dev/null`
 345                                         retval=$?
 346                                 fi
 347
 348                                 if [ ${retval} -eq 0 ] && [ -n "${RESUME_DEV}" ]; then
 349                                         good_msg "Detected real_resume=${RESUME_DEV}"
 350                                         REAL_RESUME="${RESUME_DEV}"
 351                                 fi
 352                                 ;;
 353                 esac
 354
 355                 do_resume
 356         fi
 357 fi
 358
 359 mkdir -p "${NEW_ROOT}"
 360 CHROOT="${NEW_ROOT}"
 361
 362 # Run debug shell if requested
 363 rundebugshell
 364
 365 if [ "${CDROOT}" = '1' ]
 366 then
 367         good_msg "Making tmpfs for ${NEW_ROOT}"
 368         mount -n -t tmpfs tmpfs "${NEW_ROOT}"
 369
 370         for i in dev mnt mnt/cdrom mnt/livecd mnt/key tmp tmp/.initrd mnt/gentoo sys
 371         do
 372                 mkdir -p "${NEW_ROOT}/${i}"
 373                 chmod 755 "${NEW_ROOT}/${i}"
 374         done
 375         [ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
 376         [ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console c 5 1
 377
 378         # For SGI LiveCDs ...
 379         if [ "${LOOPTYPE}" = "sgimips" ]
 380         then
 381                 [ ! -e "${NEW_ROOT}/dev/sr0" ] && mknod "${NEW_ROOT}/dev/sr0" b 11 0
 382                 [ ! -e "${NEW_ROOT}/dev/loop0" ] && mknod "${NEW_ROOT}/dev/loop0" b 7 0
 383         fi
 384
 385         # Required for splash to work.  Not an issue with the initrd as this
 386         # device isn't created there and is not needed.
 387         if [ -e /dev/tty1 ]
 388         then
 389                 [ ! -e "${NEW_ROOT}/dev/tty1" ] && mknod "${NEW_ROOT}/dev/tty1" c 4 1
 390         fi
 391
 392         if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
 393         then
 394                 bootstrapCD
 395         fi
 396
 397         if [ "${REAL_ROOT}" = '' ]
 398         then
 399                 echo -n -e "${WARN}>>${NORMAL}${BOLD} No bootable medium found. Waiting for new devices"
 400
 401                 COUNTER=0
 402                 while [ ${COUNTER} -lt 3 ]; do
 403                         sleep 3
 404                         echo -n '.'
 405                         let COUNTER=${COUNTER}+1
 406                 done
 407
 408                 sleep 1
 409                 echo -e "${NORMAL}"
 410                 bootstrapCD
 411         fi
 412
 413         if [ "${REAL_ROOT}" = '' ]
 414         then
 415                 # Undo stuff
 416                 umount  "${NEW_ROOT}/dev" 2>/dev/null
 417                 umount  "${NEW_ROOT}/sys" 2>/dev/null
 418                 umount /sys 2>/dev/null
 419
 420                 umount  "${NEW_ROOT}"
 421                 rm -rf  "${NEW_ROOT}/*"
 422
 423                 bad_msg 'Could not find CD to boot, something else needed!'
 424                 CDROOT=0
 425         fi
 426 fi
 427
 428 # Determine root device
 429 good_msg 'Determining root device...'
 430 while true
 431 do
 432         while [ "${got_good_root}" != '1' ]
 433         do
 434                 case "${REAL_ROOT}" in
 435                         LABEL\=*|UUID\=*)
 436
 437                                 ROOT_DEV=""
 438                                 retval=1
 439
 440                                 if [ ${retval} -ne 0 ]; then
 441                                         ROOT_DEV=`findfs "${REAL_ROOT}" 2>/dev/null`
 442                                         retval=$?
 443                                 fi
 444
 445                                 if [ ${retval} -ne 0 ]; then
 446                                         ROOT_DEV=`busybox findfs "${REAL_ROOT}" 2>/dev/null`
 447                                         retval=$?
 448                                 fi
 449
 450                                 if [ ${retval} -ne 0 ]; then
 451                                         ROOT_DEV=`blkid -l -t "${REAL_ROOT}" | cut -d ":" -f 1 2>/dev/null`
 452                                         retval=$?
 453                                 fi
 454
 455                                 if [ ${retval} -eq 0 ] && [ -n "${ROOT_DEV}" ]; then
 456                                         good_msg "Detected real_root=${ROOT_DEV}"
 457                                         REAL_ROOT="${ROOT_DEV}"
 458                                 else
 459                                         prompt_user "REAL_ROOT" "root block device"
 460                                         got_good_root=0
 461                                         continue
 462                                 fi
 463                                 ;;
 464                 esac
 465
 466                 if [ "${REAL_ROOT}" = '' ]
 467                 then
 468                         # No REAL_ROOT determined/specified. Prompt user for root block device.
 469                         prompt_user "REAL_ROOT" "root block device"
 470                         got_good_root=0
 471
 472                 # Check for a block device or /dev/nfs
 473                 elif [ -b "${REAL_ROOT}" ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 474                 then
 475                         got_good_root=1
 476
 477                 else
 478                         bad_msg "Block device ${REAL_ROOT} is not a valid root device..."
 479                         REAL_ROOT=""
 480                         got_good_root=0
 481                 fi
 482         done
 483
 484
 485         if [ "${CDROOT}" = 1 -a "${got_good_root}" = '1' -a "${REAL_ROOT}" != "/dev/nfs" ]
 486         then
 487                 # CD already mounted; no further checks necessary
 488                 break
 489         elif [ "${LOOPTYPE}" = "sgimips" ]
 490         then
 491                 # sgimips mounts the livecd root partition directly
 492                 # there is no isofs filesystem to worry about
 493                 break
 494         else
 495                 good_msg "Mounting root..."
 496
 497                 # Try to mount the device as ${NEW_ROOT}
 498                 if [ "${REAL_ROOT}" = '/dev/nfs' ]; then
 499                         findnfsmount
 500                 else
 501                         # mount ro so fsck doesn't barf later
 502                         if [ "${REAL_ROOTFLAGS}" = '' ]; then
 503                                 good_msg "Using mount -t ${ROOTFSTYPE} -o ro"
 504                                 mount -t ${ROOTFSTYPE} -o ro ${REAL_ROOT} ${NEW_ROOT}
 505                         else
 506                                 good_msg "Using mount -t ${ROOTFSTYPE} -o ro,${REAL_ROOTFLAGS}"
 507                                 mount -t ${ROOTFSTYPE} -o ro,${REAL_ROOTFLAGS} ${REAL_ROOT} ${NEW_ROOT}
 508                         fi
 509                 fi
 510
 511                 # If mount is successful break out of the loop
 512                 # else not a good root and start over.
 513                 if [ "$?" = '0' ]
 514                 then
 515                         if [ -d ${NEW_ROOT}/dev -a -x ${NEW_ROOT}/sbin/init ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 516                         then
 517                                 break
 518                         else
 519                                 bad_msg "The filesystem mounted at ${REAL_ROOT} does not appear to be a valid /, try again"
 520                                 got_good_root=0
 521                                 REAL_ROOT=''
 522                         fi
 523                 else
 524                         bad_msg "Could not mount specified ROOT, try again"
 525                         got_good_root=0
 526                         REAL_ROOT=''
 527                 fi
 528         fi
 529 done
 530 # End determine root device
 531
 532 #verbose_kmsg
 533
 534 # If CD root is set determine the looptype to boot
 535 if [ "${CDROOT}" = '1' ]
 536 then
 537         good_msg 'Determining looptype ...'
 538         cd "${NEW_ROOT}"
 539
 540         # Find loop and looptype
 541         [ -z "${LOOP}" ] && find_loop
 542         [ -z "${LOOPTYPE}" ] && find_looptype
 543
 544         cache_cd_contents
 545
 546         # If encrypted, find key and mount, otherwise mount as usual
 547         if [ -n "${CRYPT_ROOT}" ]
 548         then
 549                 CRYPT_ROOT_KEY="$(head -n 1 ${NEW_ROOT}/mnt/cdrom/livecd)"
 550                 CRYPT_ROOT='/dev/loop0'
 551                 good_msg 'You booted an encrypted livecd' "${CRYPT_SILENT}"
 552
 553                 losetup /dev/loop0 "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}"
 554                 test_success 'Preparing loop filesystem'
 555
 556                 startLUKS
 557
 558                 case ${LOOPTYPE} in
 559                         normal)
 560                                 MOUNTTYPE="ext2"
 561                                 ;;
 562                         *)
 563                                 MOUNTTYPE="${LOOPTYPE}"
 564                                 ;;
 565                 esac
 566                 mount -t "${MOUNTTYPE}" -o ro /dev/mapper/root "${NEW_ROOT}/mnt/livecd"
 567                 test_success 'Mount filesystem'
 568                 FS_LOCATION='mnt/livecd'
 569         # Setup the loopback mounts, if unencrypted
 570         else
 571                 if [ "${LOOPTYPE}" = 'normal' ]
 572                 then
 573                         good_msg 'Mounting loop filesystem'
 574                         mount -t ext2 -o loop,ro "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 575                         test_success 'Mount filesystem'
 576                         FS_LOCATION='mnt/livecd'
 577                 elif [ "${LOOPTYPE}" = 'squashfs' ]
 578                 then
 579                         good_msg 'Mounting squashfs filesystem'
 580                         mount -t squashfs -o loop,ro "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 581                         test_success 'Mount filesystem'
 582                         FS_LOCATION='mnt/livecd'
 583                 elif [ "${LOOPTYPE}" = 'gcloop' ]
 584                 then
 585                         good_msg 'Mounting gcloop filesystem'
 586                         echo ' ' | losetup -E 19 -e ucl-0 -p0 "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/cdrom/${LOOPEXT}${LOOP}"
 587                         test_success 'losetup the loop device'
 588
 589                         mount -t ext2 -o ro "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/livecd"
 590                         test_success 'Mount the losetup loop device'
 591                         FS_LOCATION='mnt/livecd'
 592                 elif [ "${LOOPTYPE}" = 'zisofs' ]
 593                 then
 594                         FS_LOCATION="mnt/cdrom/${LOOPEXT}${LOOP}"
 595                 elif [ "${LOOPTYPE}" = 'noloop' ]
 596                 then
 597                         FS_LOCATION='mnt/cdrom'
 598                 elif [ "${LOOPTYPE}" = 'sgimips' ]
 599                 then
 600                         # getdvhoff finds the starting offset (in bytes) of the squashfs
 601                         # partition on the cdrom and returns this offset for losetup
 602                         #
 603                         # All currently supported SGI Systems use SCSI CD-ROMs, so
 604                         # so we know that the CD-ROM is usually going to be /dev/sr0.
 605                         #
 606                         # We use the value given to losetup to set /dev/loop0 to point
 607                         # to the liveCD root partition, and then mount /dev/loop0 as
 608                         # the LiveCD rootfs
 609                         good_msg 'Locating the SGI LiveCD Root Partition'
 610                         echo ' ' | \
 611                                 losetup -o $(getdvhoff "${NEW_ROOT}${REAL_ROOT}" 0) \
 612                                         "${NEW_ROOT}${CDROOT_DEV}" \
 613                                         "${NEW_ROOT}${REAL_ROOT}"
 614                         test_success 'losetup /dev/sr0 /dev/loop0'
 615
 616                         good_msg 'Mounting the Root Partition'
 617                         mount -t squashfs -o ro "${NEW_ROOT}${CDROOT_DEV}" "${NEW_ROOT}/mnt/livecd"
 618                         test_success 'mount /dev/loop0 /'
 619                         FS_LOCATION='mnt/livecd'
 620                 fi
 621         fi
 622
 623
 624
 625         # Unpacking additional packages from NFS mount
 626         # This is useful for adding kernel modules to /lib
 627         # We do this now, so that additional packages can add whereever they want.
 628         if [ "${REAL_ROOT}" = '/dev/nfs' ]
 629         then
 630                 if [ -e "${NEW_ROOT}/mnt/cdrom/add" ]
 631                 then
 632                                 for targz in `ls ${NEW_ROOT}/mnt/cdrom/add/*.tar.gz`
 633                                 do
 634                                         tarname=`basename ${targz}`
 635                                         good_msg "Adding additional package ${tarname}"
 636                                         (cd ${NEW_ROOT} ; /bin/tar -xzf ${targz})
 637                                 done
 638                 fi
 639         fi
 640
 641
 642         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 643         then
 644                 setup_unionfs ${NEW_ROOT} ${NEW_ROOT}/${FS_LOCATION}
 645                 CHROOT=/union
 646         else
 647
 648         good_msg "Copying read-write image contents to tmpfs"
 649         # Copy over stuff that should be writable
 650         (cd "${NEW_ROOT}/${FS_LOCATION}"; cp -a ${ROOT_TREES} "${NEW_ROOT}")
 651
 652         # Now we do the links.
 653         for x in ${ROOT_LINKS}
 654         do
 655                 if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
 656                 then
 657                         ln -s "`readlink ${NEW_ROOT}/${FS_LOCATION}/${x}`" "${x}" 2>/dev/null
 658                 else
 659                         # List all subdirectories of x
 660                         find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null | while read directory
 661                         do
 662                                 # Strip the prefix of the FS_LOCATION
 663                                 directory="${directory#${NEW_ROOT}/${FS_LOCATION}/}"
 664
 665                                 # Skip this directory if we already linked a parent directory
 666                                 if [ "${current_parent}" != '' ]; then
 667                                         var=`echo "${directory}" | grep "^${current_parent}"`
 668                                         if [ "${var}" != '' ]; then
 669                                                 continue
 670                                         fi
 671                                 fi
 672                                 # Test if the directory exists already
 673                                 if [ -e "/${NEW_ROOT}/${directory}" ]
 674                                 then
 675                                         # It does exist, link all the individual files
 676                                         for file in `ls /${NEW_ROOT}/${FS_LOCATION}/${directory}`
 677                                         do
 678                                         if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ] && [ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
 679                                                         ln -s "/${FS_LOCATION}/${directory}/${file}" "${directory}/${file}" 2> /dev/null
 680                                                 fi
 681                                         done
 682                                 else
 683                                         # It does not exist, make a link to the livecd
 684                                         ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
 685                                         current_parent="${directory}"
 686                                 fi
 687                         done
 688                 fi
 689         done
 690
 691         mkdir initramfs proc tmp sys 2>/dev/null
 692         chmod 1777 tmp
 693
 694         fi
 695
 696         #UML=`cat /proc/cpuinfo|grep UML|sed -e 's|model name.*: ||'`
 697         #if [ "${UML}" = 'UML' ]
 698         #then
 699         #       # UML Fixes
 700         #       good_msg 'Updating for uml system'
 701         #fi
 702
 703         # Let Init scripts know that we booted from CD
 704         export CDBOOT
 705         CDBOOT=1
 706 else
 707         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 708         then
 709                 mkdir /union_changes
 710                 mount -t tmpfs tmpfs /union_changes
 711                 setup_unionfs /union_changes ${NEW_ROOT}
 712                 mkdir -p ${UNION}/tmp/.initrd
 713         fi
 714 fi
 715
 716 # Execute script on the cdrom just before boot to update things if necessary
 717 cdupdate
 718
 719 if [ "${SUBDIR}" != '' -a -e "${CHROOT}/${SUBDIR}" ]
 720 then
 721         good_msg "Entering ${SUBDIR} to boot"
 722         CHROOT="${CHROOT}/${SUBDIR}"
 723 fi
 724
 725 verbose_kmsg
 726
 727 echo -ne "${GOOD}>>${NORMAL}${BOLD} Booting (initramfs)${NORMAL}"
 728 if [ ! -e "${CHROOT}/dev/console" ] || [ ! -e "${CHROOT}/dev/null" ]
 729 then
 730         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing files required to boot (console and null)${NORMAL}"
 731 elif [ -e /etc/initrd.splash -a ! -e "${CHROOT}/dev/tty1" ]
 732 then
 733         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing tty1, which is required for splash${NORMAL}"
 734 fi
 735
 736 cd "${CHROOT}"
 737 mkdir "${CHROOT}/proc" "${CHROOT}/sys" 2>/dev/null
 738 echo -ne "${BOLD}.${NORMAL}"
 739
 740 # If devtmpfs is mounted, try move it to the new root
 741 # If that fails, try to unmount all possible mounts of devtmpfs as stuff breaks otherwise
 742 for fs in /dev /sys /proc
 743 do
 744         if grep -qs "$fs" /proc/mounts
 745         then
 746                 if ! mount --move $fs "${CHROOT}"$fs
 747                 then
 748                         umount $fs || echo '*: Failed to move and unmount the ramdisk $fs!'
 749                 fi
 750         fi
 751 done
 752
 753 echo -e "${BOLD}.${NORMAL}"
 754
 755 exec /sbin/switch_root -c "/dev/console" "${CHROOT}" "${REAL_INIT:-/sbin/init}" "${INIT_OPTS}"
 756
 757 # If we get here, something bad has happened
 758 splash 'verbose'
 759
 760 echo 'A fatal error has probably occured since /sbin/init did not'
 761 echo 'boot correctly. Trying to open a shell...'
 762 echo
 763 exec /bin/bash
 764 exec /bin/sh
 765 exec /bin/ash
 766 exec sh