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=${x#*=}
  47                 ;;
  48                 root=*)
  49                         FAKE_ROOT=${x#*=}
  50                 ;;
  51                 subdir=*)
  52                         SUBDIR=${x#*=}
  53                 ;;
  54                 real_init=*)
  55                         REAL_INIT=${x#*=}
  56                 ;;
  57                 init_opts=*)
  58                         INIT_OPTS=${x#*=}
  59                 ;;
  60                 # Livecd options
  61                 cdroot)
  62                         CDROOT=1
  63                 ;;
  64                 cdroot=*)
  65                         CDROOT=1
  66                         CDROOT_DEV=${x#*=}
  67                 ;;
  68                 cdroot_type=*)
  69                         CDROOT_TYPE=${x#*=}
  70                 ;;
  71                 # Start livecd loop, looptype options
  72                 loop=*)
  73                         LOOP=${x#*=}
  74                 ;;
  75                 looptype=*)
  76                         LOOPTYPE=${x#*=}
  77                 ;;
  78                 isoboot=*)
  79                         ISOBOOT=${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=${x#*=}
  97                         USE_DMRAID_NORMAL=1
  98                 ;;
  99                 dozfs*)
 100                         USE_ZFS=1
 101                         MY_HWOPTS="${MY_HWOPTS} zfs"
 102                         if [ "${x#*=}" = 'force' ]
 103                         then
 104                                 ZPOOL_FORCE=-f
 105                         fi
 106                 ;;
 107                 # Debug Options
 108                 debug)
 109                         DEBUG='yes'
 110                 ;;
 111                 # Scan delay options
 112                 scandelay=*)
 113                         SDELAY=${x#*=}
 114                 ;;
 115                 scandelay)
 116                         SDELAY=3
 117                 ;;
 118                 # Module no-loads
 119                 doload=*)
 120                         MDOLIST=${x#*=}
 121                         MDOLIST=$(echo ${MDOLIST} | sed -e 's/,/ /g')
 122                 ;;
 123                 nodetect)
 124                         NODETECT=1
 125                 ;;
 126                 noload=*)
 127                         MLIST=${x#*=}
 128                         MLIST="$(echo ${MLIST} | sed -e 's/,/ /g')"
 129                         export MLIST
 130                 ;;
 131                 # Redirect output to a specific tty
 132                 CONSOLE=*|console=*)
 133                         CONSOLE=${x#*=}
 134                         CONSOLE=$(basename ${CONSOLE})
 135 #                       exec >${CONSOLE} <${CONSOLE} 2>&1
 136                 ;;
 137                 # /dev/md
 138                 lvmraid=*)
 139                         RAID_DEVICES="${x#*=}"
 140                         RAID_DEVICES="$(echo ${RAID_DEVICES} | sed -e 's/,/ /g')"
 141                         USE_LVM_NORMAL=1
 142                 ;;
 143                 part=*)
 144                         MDPART=${x#*=}
 145                 ;;
 146                 # NFS
 147                 ip=*)
 148                         IP=${x#*=}
 149                 ;;
 150                 nfsroot=*)
 151                         NFSROOT=${x#*=}
 152                 ;;
 153                 # iSCSI
 154                 iscsi_initiatorname=*)
 155                         ISCSI_INITIATORNAME=${x#*=}
 156                 ;;
 157                 iscsi_target=*)
 158                         ISCSI_TARGET=${x#*=}
 159                 ;;
 160                 iscsi_tgpt=*)
 161                         ISCSI_TGPT=${x#*=}
 162                 ;;
 163                 iscsi_address=*)
 164                         ISCSI_ADDRESS=${x#*=}
 165                 ;;
 166                 iscsi_port=*)
 167                         ISCSI_PORT=${x#*=}
 168                 ;;
 169                 iscsi_username=*)
 170                         ISCSI_USERNAME=${x#*=}
 171                 ;;
 172                 iscsi_password=*)
 173                         ISCSI_PASSWORD=${x#*=}
 174                 ;;
 175                 iscsi_username_in=*)
 176                         ISCSI_USERNAME_IN=${x#*=}
 177                 ;;
 178                 iscsi_password_in=*)
 179                         ISCSI_PASSWORD_IN=${x#*=}
 180                 ;;
 181                 iscsi_debug=*)
 182                         ISCSI_DEBUG=${x#*=}
 183                 ;;
 184                 iscsi_noibft)
 185                         ISCSI_NOIBFT=1
 186                 ;;
 187                 # Crypto
 188                 crypt_root=*)
 189                         CRYPT_ROOT=${x#*=}
 190                 ;;
 191                 crypt_swap=*)
 192                         CRYPT_SWAP=${x#*=}
 193                 ;;
 194                 root_key=*)
 195                         CRYPT_ROOT_KEY=${x#*=}
 196                 ;;
 197                 root_keydev=*)
 198                         CRYPT_ROOT_KEYDEV=${x#*=}
 199                 ;;
 200                 root_trim=*)
 201                         CRYPT_ROOT_TRIM=${x#*=}
 202                 ;;
 203
 204                 swap_key=*)
 205                         CRYPT_SWAP_KEY=${x#*=}
 206                 ;;
 207                 swap_keydev=*)
 208                         CRYPT_SWAP_KEYDEV=${x#*=}
 209                 ;;
 210                 real_resume=*|resume=*)
 211                         REAL_RESUME=${x#*=}
 212                 ;;
 213                 noresume)
 214                         NORESUME=1
 215                 ;;
 216                 crypt_silent)
 217                         CRYPT_SILENT=1
 218                 ;;
 219                 real_rootflags=*)
 220                         REAL_ROOTFLAGS=${x#*=}
 221                 ;;
 222                 rootfstype=*)
 223                         ROOTFSTYPE=${x#*=}
 224                 ;;
 225                 keymap=*)
 226                         keymap=${x#*=}
 227                 ;;
 228                 aufs)
 229                         USE_AUFS_NORMAL=1
 230                 ;;
 231                 unionfs)
 232                         if [ ! -x /sbin/unionfs ]
 233                         then
 234                                 USE_UNIONFS_NORMAL=0
 235                                 bad_msg 'unionfs binary not found: aborting use of unionfs!'
 236                         else
 237                                 USE_UNIONFS_NORMAL=1
 238                         fi
 239                         ;;
 240                 nounionfs)
 241                         USE_UNIONFS_NORMAL=0
 242                         ;;
 243         esac
 244 done
 245
 246 if [ -z "${REAL_ROOT}" -a \( "${CDROOT}" = '0' \)  -a \( "${FAKE_ROOT}" != "/dev/ram0" \) ]
 247 then
 248         REAL_ROOT="${FAKE_ROOT}"
 249 fi
 250
 251 # Disable ZFS when support is missing
 252 if [ "USE_ZFS" = "1" -a ! -x /sbin/zfs ]
 253 then
 254         USE_ZFS=0
 255         MY_HWOPTS=$(echo ${MY_HWOPTS} | sed -e 's/ zfs//g')
 256         bad_msg 'zfs binary not found: aborting use of zfs!'
 257 fi
 258
 259 splash 'init'
 260
 261 cmdline_hwopts
 262
 263 # Mount sysfs
 264 mount_sysfs
 265
 266 # Setup hotplugging for firmware loading
 267 setup_hotplug
 268
 269 # Load modules listed in MY_HWOPTS if /lib/modules exists for the running kernel
 270 if [ -z "${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 if [ -e /bin/iscsistart ]
 304 then
 305         startiscsi
 306 fi
 307
 308 # Setup btrfs, see bug 303529
 309 setup_btrfsctl
 310
 311 # Setup md device nodes if they dont exist
 312 setup_md_device
 313
 314 # Scan volumes
 315 startVolumes
 316
 317 setup_keymap
 318
 319 # Initialize LUKS root device except for livecd's
 320 if [ "${CDROOT}" != 1 ]
 321 then
 322         startLUKS
 323         if [ "${NORESUME}" != '1' ] && [ -n "${REAL_RESUME}" ]
 324         then
 325                 case "${REAL_RESUME}" in
 326                         LABEL=*|UUID=*)
 327
 328                                 RESUME_DEV=""
 329                                 retval=1
 330
 331                                 if [ ${retval} -ne 0 ]; then
 332                                         RESUME_DEV=$(findfs "${REAL_RESUME}" 2>/dev/null)
 333                                         retval=$?
 334                                 fi
 335
 336                                 if [ ${retval} -ne 0 ]; then
 337                                         RESUME_DEV=$(busybox findfs "${REAL_RESUME}" 2>/dev/null)
 338                                         retval=$?
 339                                 fi
 340
 341                                 if [ ${retval} -ne 0 ]; then
 342                                         RESUME_DEV=$(blkid -l -t "${REAL_RESUME}" | cut -d ":" -f 1 2>/dev/null)
 343                                         retval=$?
 344                                 fi
 345
 346                                 if [ ${retval} -eq 0 ] && [ -n "${RESUME_DEV}" ]; then
 347                                         good_msg "Detected real_resume=${RESUME_DEV}"
 348                                         REAL_RESUME="${RESUME_DEV}"
 349                                 fi
 350                                 ;;
 351                 esac
 352
 353                 do_resume
 354         fi
 355 fi
 356
 357 mkdir -p "${NEW_ROOT}"
 358 CHROOT="${NEW_ROOT}"
 359
 360 # Run debug shell if requested
 361 rundebugshell
 362
 363 if [ "${CDROOT}" = '1' ]
 364 then
 365         good_msg "Making tmpfs for ${NEW_ROOT}"
 366         mount -n -t tmpfs tmpfs "${NEW_ROOT}"
 367
 368         for i in dev mnt mnt/livecd mnt/key tmp tmp/.initrd mnt/gentoo sys
 369         do
 370                 mkdir -p "${NEW_ROOT}/${i}"
 371                 chmod 755 "${NEW_ROOT}/${i}"
 372         done
 373         [ ! -d "${CDROOT_PATH}" ] && mkdir -p "${CDROOT_PATH}"
 374         [ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
 375         [ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console c 5 1
 376
 377         # For SGI LiveCDs ...
 378         if [ "${LOOPTYPE}" = "sgimips" ]
 379         then
 380                 [ ! -e "${NEW_ROOT}/dev/sr0" ] && mknod "${NEW_ROOT}/dev/sr0" b 11 0
 381                 [ ! -e "${NEW_ROOT}/dev/loop0" ] && mknod "${NEW_ROOT}/dev/loop0" b 7 0
 382         fi
 383
 384         # Required for splash to work.  Not an issue with the initrd as this
 385         # device isn't created there and is not needed.
 386         if [ -e /dev/tty1 ]
 387         then
 388                 [ ! -e "${NEW_ROOT}/dev/tty1" ] && mknod "${NEW_ROOT}/dev/tty1" c 4 1
 389         fi
 390
 391         if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
 392         then
 393                 bootstrapCD
 394         fi
 395
 396         if [ "${REAL_ROOT}" = '' ]
 397         then
 398                 echo -n -e "${WARN}>>${NORMAL}${BOLD} No bootable medium found. Waiting for new devices"
 399
 400                 COUNTER=0
 401                 while [ ${COUNTER} -lt 3 ]; do
 402                         sleep 3
 403                         echo -n '.'
 404                         let COUNTER=${COUNTER}+1
 405                 done
 406
 407                 sleep 1
 408                 echo -e "${NORMAL}"
 409                 bootstrapCD
 410         fi
 411
 412         if [ "${REAL_ROOT}" = '' ]
 413         then
 414                 # Undo stuff
 415                 umount  "${NEW_ROOT}/dev" 2>/dev/null
 416                 umount  "${NEW_ROOT}/sys" 2>/dev/null
 417                 umount /sys 2>/dev/null
 418
 419                 umount  "${NEW_ROOT}"
 420                 rm -rf  "${NEW_ROOT}/*"
 421
 422                 bad_msg 'Could not find CD to boot, something else needed!'
 423                 CDROOT=0
 424         fi
 425 fi
 426
 427 # Determine root device
 428 good_msg 'Determining root device...'
 429 while true
 430 do
 431         while [ "${got_good_root}" != '1' ]
 432         do
 433                 case "${REAL_ROOT}" in
 434                         LABEL=*|UUID=*)
 435
 436                                 ROOT_DEV=""
 437                                 retval=1
 438
 439                                 if [ ${retval} -ne 0 ]; then
 440                                         ROOT_DEV=$(findfs "${REAL_ROOT}" 2>/dev/null)
 441                                         retval=$?
 442                                 fi
 443
 444                                 if [ ${retval} -ne 0 ]; then
 445                                         ROOT_DEV=$(busybox findfs "${REAL_ROOT}" 2>/dev/null)
 446                                         retval=$?
 447                                 fi
 448
 449                                 if [ ${retval} -ne 0 ]; then
 450                                         ROOT_DEV=$(blkid -l -t "${REAL_ROOT}" | cut -d ":" -f 1 2>/dev/null)
 451                                         retval=$?
 452                                 fi
 453
 454                                 if [ ${retval} -eq 0 ] && [ -n "${ROOT_DEV}" ]; then
 455                                         good_msg "Detected real_root=${ROOT_DEV}"
 456                                         REAL_ROOT="${ROOT_DEV}"
 457                                 else
 458                                         prompt_user "REAL_ROOT" "root block device"
 459                                         got_good_root=0
 460                                         continue
 461                                 fi
 462                                 ;;
 463                         ZFS*)
 464                                 ROOT_DEV="${REAL_ROOT#*=}"
 465                                 if [ "${ROOT_DEV}" != 'ZFS' ]
 466                                 then
 467                                         zfs get type ${ROOT_DEV} > /dev/null
 468
 469                                         if [ "$?" = '0' ]
 470                                         then
 471                                                 got_good_root=1;
 472                                                 REAL_ROOT=${ROOT_DEV}
 473                                                 ROOTFSTYPE=zfs
 474                                         fi
 475                                 else
 476                                         BOOTFS=$(/sbin/zpool list -H -o bootfs)
 477                                         if [ "${BOOTFS}" != '-' ]
 478                                         then
 479
 480                                                 for i in ${BOOTFS}
 481                                                 do
 482
 483                                                         zfs get type ${i} > /dev/null
 484                                                         retval=$?
 485
 486                                                         if [ ${retval} -eq 0 ]; then
 487                                                                 got_good_root=1
 488                                                                 REAL_ROOT=${i}
 489                                                                 ROOTFSTYPE=zfs
 490                                                                 break
 491                                                         fi
 492
 493                                                 done;
 494
 495                                         fi
 496
 497                                 fi
 498
 499                                 if [ ${got_good_root} -ne 1 ]; then
 500                                         prompt_user "REAL_ROOT" "root block device"
 501                                         got_good_root=0
 502                                 fi
 503
 504                                 continue
 505                                 ;;
 506                 esac
 507
 508                 if [ "${REAL_ROOT}" = '' ]
 509                 then
 510                         # No REAL_ROOT determined/specified. Prompt user for root block device.
 511                         prompt_user "REAL_ROOT" "root block device"
 512                         got_good_root=0
 513
 514                 # Check for a block device or /dev/nfs
 515                 elif [ -b "${REAL_ROOT}" ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 516                 then
 517                         got_good_root=1
 518
 519                 else
 520                         bad_msg "Block device ${REAL_ROOT} is not a valid root device..."
 521                         REAL_ROOT=""
 522                         got_good_root=0
 523                 fi
 524         done
 525
 526
 527         if [ "${CDROOT}" = 1 -a "${got_good_root}" = '1' -a "${REAL_ROOT}" != "/dev/nfs" ]
 528         then
 529                 # CD already mounted; no further checks necessary
 530                 break
 531         elif [ "${LOOPTYPE}" = "sgimips" ]
 532         then
 533                 # sgimips mounts the livecd root partition directly
 534                 # there is no isofs filesystem to worry about
 535                 break
 536         else
 537                 good_msg "Mounting $REAL_ROOT as root..."
 538
 539                 if [ "${ROOTFSTYPE}" = 'zfs' ]
 540                 then
 541                         MOUNT_STATE=rw
 542                 else
 543                         MOUNT_STATE=ro
 544                 fi
 545
 546                 # Try to mount the device as ${NEW_ROOT}
 547                 if [ "${REAL_ROOT}" = '/dev/nfs' ]; then
 548                         findnfsmount
 549                 else
 550                         # If $REAL_ROOT is a symlink
 551                         # Resolve it like util-linux mount does
 552                         [ -L ${REAL_ROOT} ] && REAL_ROOT=`readlink ${REAL_ROOT}`
 553                         # mount ro so fsck doesn't barf later
 554                         if [ "${REAL_ROOTFLAGS}" = '' ]; then
 555                                 good_msg "Using mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE}"
 556                                 mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE} ${REAL_ROOT} ${NEW_ROOT}
 557                         else
 558                                 good_msg "Using mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE},${REAL_ROOTFLAGS}"
 559                                 mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE},${REAL_ROOTFLAGS} ${REAL_ROOT} ${NEW_ROOT}
 560                         fi
 561                 fi
 562
 563                 # If mount is successful break out of the loop
 564                 # else not a good root and start over.
 565                 if [ "$?" = '0' ]
 566                 then
 567                         if [ -d ${NEW_ROOT}/dev -a -x ${NEW_ROOT}/sbin/init ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 568                         then
 569                                 break
 570                         else
 571                                 bad_msg "The filesystem mounted at ${REAL_ROOT} does not appear to be a valid /, try again"
 572                                 got_good_root=0
 573                                 REAL_ROOT=''
 574                         fi
 575                 else
 576                         bad_msg "Could not mount specified ROOT, try again"
 577                         got_good_root=0
 578                         REAL_ROOT=''
 579                 fi
 580         fi
 581 done
 582 # End determine root device
 583
 584 #verbose_kmsg
 585
 586 # If CD root is set determine the looptype to boot
 587 if [ "${CDROOT}" = '1' ]
 588 then
 589         good_msg 'Determining looptype ...'
 590         cd "${NEW_ROOT}"
 591
 592         # Find loop and looptype
 593         [ -z "${LOOP}" ] && find_loop
 594         [ -z "${LOOPTYPE}" ] && find_looptype
 595
 596         cache_cd_contents
 597
 598         # If encrypted, find key and mount, otherwise mount as usual
 599         if [ -n "${CRYPT_ROOT}" ]
 600         then
 601                 CRYPT_ROOT_KEY="$(head -n 1 "${CDROOT_PATH}"/livecd)"
 602                 CRYPT_ROOT='/dev/loop0'
 603                 good_msg 'You booted an encrypted livecd' "${CRYPT_SILENT}"
 604
 605                 losetup /dev/loop0 "${CDROOT_PATH}/${LOOPEXT}${LOOP}"
 606                 test_success 'Preparing loop filesystem'
 607
 608                 startLUKS
 609
 610                 case ${LOOPTYPE} in
 611                         normal)
 612                                 MOUNTTYPE="ext2"
 613                                 ;;
 614                         *)
 615                                 MOUNTTYPE="${LOOPTYPE}"
 616                                 ;;
 617                 esac
 618                 mount -t "${MOUNTTYPE}" -o ro /dev/mapper/root "${NEW_ROOT}/mnt/livecd"
 619                 test_success 'Mount filesystem'
 620                 FS_LOCATION='mnt/livecd'
 621         # Setup the loopback mounts, if unencrypted
 622         else
 623                 if [ "${LOOPTYPE}" = 'normal' ]
 624                 then
 625                         good_msg 'Mounting loop filesystem'
 626                         mount -t ext2 -o loop,ro "${CDROOT_PATH}/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 627                         test_success 'Mount filesystem'
 628                         FS_LOCATION='mnt/livecd'
 629                 elif [ "${LOOPTYPE}" = 'squashfs' ]
 630                 then
 631                         if [ "${USE_AUFS_NORMAL}" != '1' ]; then
 632                                 good_msg 'Mounting squashfs filesystem'
 633                                 _CACHED_SQUASHFS_PATH="${NEW_ROOT}/mnt/${LOOP}"
 634                                 _squashfs_path="${CDROOT_PATH}/${LOOPEXT}${LOOP}"  # Default to uncached
 635                                 # Upgrade to cached version if possible
 636                                 [ "${DO_cache}" -a -f "${_CACHED_SQUASHFS_PATH}" ] \
 637                                                 && _squashfs_path=${_CACHED_SQUASHFS_PATH}
 638                                 mount -t squashfs -o loop,ro "${_squashfs_path}" "${NEW_ROOT}/mnt/livecd" || {
 639                                         bad_msg "Squashfs filesystem could not be mounted, dropping into shell."
 640                                         if [ -e /proc/filesystems ]; then
 641                                                 fgrep -q squashfs /proc/filesystems || \
 642                                                         bad_msg "HINT: Your kernel does not know filesystem \"squashfs\"."
 643                                         fi
 644                                         do_rundebugshell
 645                                 }
 646                         else
 647                                 good_msg 'Mounting squashfs & aufs filesystems'
 648                                 setup_squashfs_aufs
 649                                 test_success 'Mount filesystem'
 650                         fi
 651                         FS_LOCATION='mnt/livecd'
 652                 elif [ "${LOOPTYPE}" = 'gcloop' ]
 653                 then
 654                         good_msg 'Mounting gcloop filesystem'
 655                         echo ' ' | losetup -E 19 -e ucl-0 -p0 "${NEW_ROOT}/dev/loop0" "${CDROOT_PATH}/${LOOPEXT}${LOOP}"
 656                         test_success 'losetup the loop device'
 657
 658                         mount -t ext2 -o ro "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/livecd"
 659                         test_success 'Mount the losetup loop device'
 660                         FS_LOCATION='mnt/livecd'
 661                 elif [ "${LOOPTYPE}" = 'zisofs' ]
 662                 then
 663                         FS_LOCATION="${CDROOT_PATH/\/}/${LOOPEXT}${LOOP}"
 664                 elif [ "${LOOPTYPE}" = 'noloop' ]
 665                 then
 666                         FS_LOCATION="${CDROOT_PATH/\/}"
 667                 elif [ "${LOOPTYPE}" = 'sgimips' ]
 668                 then
 669                         # getdvhoff finds the starting offset (in bytes) of the squashfs
 670                         # partition on the cdrom and returns this offset for losetup
 671                         #
 672                         # All currently supported SGI Systems use SCSI CD-ROMs, so
 673                         # so we know that the CD-ROM is usually going to be /dev/sr0.
 674                         #
 675                         # We use the value given to losetup to set /dev/loop0 to point
 676                         # to the liveCD root partition, and then mount /dev/loop0 as
 677                         # the LiveCD rootfs
 678                         good_msg 'Locating the SGI LiveCD Root Partition'
 679                         echo ' ' | \
 680                                 losetup -o $(getdvhoff "${NEW_ROOT}${REAL_ROOT}" 0) \
 681                                         "${NEW_ROOT}${CDROOT_DEV}" \
 682                                         "${NEW_ROOT}${REAL_ROOT}"
 683                         test_success 'losetup /dev/sr0 /dev/loop0'
 684
 685                         good_msg 'Mounting the Root Partition'
 686                         mount -t squashfs -o ro "${NEW_ROOT}${CDROOT_DEV}" "${NEW_ROOT}/mnt/livecd"
 687                         test_success 'mount /dev/loop0 /'
 688                         FS_LOCATION='mnt/livecd'
 689                 fi
 690         fi
 691
 692
 693
 694         # Unpacking additional packages from NFS mount
 695         # This is useful for adding kernel modules to /lib
 696         # We do this now, so that additional packages can add whereever they want.
 697         if [ "${REAL_ROOT}" = '/dev/nfs' ]
 698         then
 699                 if [ -e "${CDROOT_PATH}/add" ]
 700                 then
 701                                 for targz in $(ls ${CDROOT_PATH}/add/*.tar.gz)
 702                                 do
 703                                         tarname=$(basename ${targz})
 704                                         good_msg "Adding additional package ${tarname}"
 705                                         (cd ${NEW_ROOT} ; /bin/tar -xzf ${targz})
 706                                 done
 707                 fi
 708         fi
 709
 710
 711         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 712         then
 713                 setup_unionfs ${NEW_ROOT} /${FS_LOCATION}
 714                 CHROOT=/union
 715         elif [ "${USE_AUFS_NORMAL}" != '1' ]; then
 716
 717         good_msg "Copying read-write image contents to tmpfs"
 718         # Copy over stuff that should be writable
 719         (cd "${NEW_ROOT}/${FS_LOCATION}"; cp -a ${ROOT_TREES} "${NEW_ROOT}") || {
 720                 bad_msg "Copying failed, dropping into a shell."
 721                 do_rundebugshell
 722         }
 723
 724         # Now we do the links.
 725         for x in ${ROOT_LINKS}
 726         do
 727                 if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
 728                 then
 729                         ln -s "$(readlink ${NEW_ROOT}/${FS_LOCATION}/${x})" "${x}" 2>/dev/null
 730                 else
 731                         # List all subdirectories of x
 732                         find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null | while read directory
 733                         do
 734                                 # Strip the prefix of the FS_LOCATION
 735                                 directory="${directory#${NEW_ROOT}/${FS_LOCATION}/}"
 736
 737                                 # Skip this directory if we already linked a parent directory
 738                                 if [ "${current_parent}" != '' ]; then
 739                                         var=$(echo "${directory}" | grep "^${current_parent}")
 740                                         if [ "${var}" != '' ]; then
 741                                                 continue
 742                                         fi
 743                                 fi
 744                                 # Test if the directory exists already
 745                                 if [ -e "/${NEW_ROOT}/${directory}" ]
 746                                 then
 747                                         # It does exist, link all the individual files
 748                                         for file in $(ls /${NEW_ROOT}/${FS_LOCATION}/${directory})
 749                                         do
 750                                         if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ] && [ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
 751                                                         ln -s "/${FS_LOCATION}/${directory}/${file}" "${directory}/${file}" 2> /dev/null
 752                                                 fi
 753                                         done
 754                                 else
 755                                         # It does not exist, make a link to the livecd
 756                                         ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
 757                                         current_parent="${directory}"
 758                                 fi
 759                         done
 760                 fi
 761         done
 762
 763         mkdir initramfs proc tmp sys 2>/dev/null
 764         chmod 1777 tmp
 765
 766         fi
 767
 768         #UML=$(cat /proc/cpuinfo|grep UML|sed -e 's|model name.*: ||')
 769         #if [ "${UML}" = 'UML' ]
 770         #then
 771         #       # UML Fixes
 772         #       good_msg 'Updating for uml system'
 773         #fi
 774
 775         # Let Init scripts know that we booted from CD
 776         export CDBOOT
 777         CDBOOT=1
 778 else
 779         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 780         then
 781                 mkdir /union_changes
 782                 mount -t tmpfs tmpfs /union_changes
 783                 setup_unionfs /union_changes ${NEW_ROOT}
 784                 mkdir -p ${UNION}/tmp/.initrd
 785         fi
 786 fi
 787
 788 # Mount the additional things as required by udev & systemd
 789 if [ -f ${NEW_ROOT}/etc/initramfs.mounts ]; then
 790         fslist=$(get_mounts_list)
 791 else
 792         fslist="/usr"
 793 fi
 794
 795 for fs in $fslist; do
 796         dev=$(get_mount_device $fs)
 797         [ -z "${dev}" ] && continue
 798         # Resolve it like util-linux mount does
 799         [ -L ${dev} ] && dev=`readlink ${dev}`
 800         # In this case, it's probably part of the filesystem
 801         # and not a mountpoint
 802         [ -z "$dev" ] && continue
 803         fstype=$(get_mount_fstype $fs)
 804         # ro must be trailing, and the options will always contain at least 'defaults'
 805         opts="$(get_mount_options $fs | strip_mount_options),ro"
 806         mnt=${NEW_ROOT}${fs}
 807         cmd="mount -t $fstype -o $opts $dev $mnt"
 808         good_msg "Mounting $dev as ${fs}: $cmd"
 809         if ! $cmd; then
 810                 bad_msg "Unable to mount $dev for $fs"
 811         fi
 812 done
 813
 814 # Execute script on the cdrom just before boot to update things if necessary
 815 cdupdate
 816
 817 if [ "${SUBDIR}" != '' -a -e "${CHROOT}/${SUBDIR}" ]
 818 then
 819         good_msg "Entering ${SUBDIR} to boot"
 820         CHROOT="${CHROOT}/${SUBDIR}"
 821 fi
 822
 823 verbose_kmsg
 824
 825 echo -ne "${GOOD}>>${NORMAL}${BOLD} Booting (initramfs)${NORMAL}"
 826
 827 cd "${CHROOT}"
 828 mkdir "${CHROOT}/proc" "${CHROOT}/sys" 2>/dev/null
 829 echo -ne "${BOLD}.${NORMAL}"
 830
 831 # If devtmpfs is mounted, try move it to the new root
 832 # If that fails, try to unmount all possible mounts of devtmpfs as stuff breaks otherwise
 833 for fs in /dev /sys /proc
 834 do
 835         if grep -qs "$fs" /proc/mounts
 836         then
 837                 if ! mount --move $fs "${CHROOT}"$fs
 838                 then
 839                         umount $fs || echo '*: Failed to move and unmount the ramdisk $fs!'
 840                 fi
 841         fi
 842 done
 843
 844 if [ ! -e "${CHROOT}/dev/console" ] || [ ! -e "${CHROOT}/dev/null" ]
 845 then
 846         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing files required to boot (console and null)${NORMAL}"
 847 elif [ -e /etc/initrd.splash -a ! -e "${CHROOT}/dev/tty1" ]
 848 then
 849         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing tty1, which is required for splash${NORMAL}"
 850 fi
 851
 852 echo -e "${BOLD}.${NORMAL}"
 853
 854 exec /sbin/switch_root -c "/dev/console" "${CHROOT}" "${REAL_INIT:-/sbin/init}" "${INIT_OPTS}"
 855
 856 # If we get here, something bad has happened
 857 splash 'verbose'
 858
 859 echo "A fatal error has probably occured since ${REAL_INIT:-/sbin/init} did not"
 860 echo "boot correctly. Trying to open a shell..."
 861 echo
 862 exec /bin/bash
 863 exec /bin/sh
 864 exec /bin/ash
 865 exec /bin/dash
 866 exec sh