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=${x#*=}
  97                         USE_DMRAID_NORMAL=1
  98                 ;;
  99                 dozfs*)
 100                         USE_ZFS=1
 101
 102                         if [ "${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="${FAKE_ROOT}"
 249 fi
 250
 251 # Set variables based on the value of REAL_ROOT
 252 case "${REAL_ROOT}" in
 253         ZFS*)
 254                 USE_ZFS=1
 255         ;;
 256 esac
 257
 258 # Verify that it is safe to use ZFS
 259 if [ "USE_ZFS" = "1" ]
 260 then
 261         if [ -x /sbin/zfs ]
 262         then
 263                 MY_HWOPTS="${MY_HWOPTS} zfs"
 264         else
 265                 bad_msg 'zfs binary not found: aborting use of zfs!'
 266                 USE_ZFS=0
 267         fi
 268 fi
 269
 270 splash 'init'
 271
 272 cmdline_hwopts
 273
 274 # Mount devfs
 275 mount_devfs
 276
 277 # Mount sysfs
 278 mount_sysfs
 279
 280 # Setup hotplugging for firmware loading
 281 setup_hotplug
 282
 283 # Start mdev
 284 if [ "${KV_2_6_OR_GREATER}" ]
 285 then
 286         good_msg 'Activating mdev'
 287         ( cd /sys && mdev -s ) || bad_msg "Failed to receive dynamic updates from mdev"
 288 fi
 289
 290 # Load modules listed in MY_HWOPTS if /lib/modules exists for the running kernel
 291 if [ -z "${DO_modules}" ]
 292 then
 293         good_msg 'Skipping module load; disabled via commandline'
 294 elif [ -d "/lib/modules/${KV}" ]
 295 then
 296         good_msg 'Loading modules'
 297         # Load appropriate kernel modules
 298         if [ "${NODETECT}" != '1' ]
 299         then
 300                 for modules in ${MY_HWOPTS}
 301                 do
 302                         modules_scan ${modules}
 303                 done
 304         fi
 305         # Always eval doload=...
 306         modules_load ${MDOLIST}
 307 else
 308         good_msg 'Skipping module load; no modules in the ramdisk!'
 309 fi
 310
 311 # Apply scan delay if specified
 312 sdelay
 313
 314 # Setup slow USB bits
 315 setup_slowusb
 316
 317 cd /
 318
 319 # if doslowusb is passed, pause other 10 seconds here, after mdev load
 320 [ "${DO_slowusb}" ] && sleep 10
 321
 322 # Start iSCSI
 323 if [ -e /bin/iscsistart ]
 324 then
 325         startiscsi
 326 fi
 327
 328 # Setup btrfs, see bug 303529
 329 setup_btrfsctl
 330
 331 # Setup md device nodes if they dont exist
 332 setup_md_device
 333
 334 # Scan volumes
 335 startVolumes
 336
 337 setup_keymap
 338
 339 # Initialize LUKS root device except for livecd's
 340 if [ "${CDROOT}" != 1 ]
 341 then
 342         startLUKS
 343         if [ "${NORESUME}" != '1' ] && [ -n "${REAL_RESUME}" ]
 344         then
 345                 case "${REAL_RESUME}" in
 346                         LABEL=*|UUID=*)
 347
 348                                 RESUME_DEV=""
 349                                 retval=1
 350
 351                                 if [ ${retval} -ne 0 ]; then
 352                                         RESUME_DEV=$(findfs "${REAL_RESUME}" 2>/dev/null)
 353                                         retval=$?
 354                                 fi
 355
 356                                 if [ ${retval} -ne 0 ]; then
 357                                         RESUME_DEV=$(busybox findfs "${REAL_RESUME}" 2>/dev/null)
 358                                         retval=$?
 359                                 fi
 360
 361                                 if [ ${retval} -ne 0 ]; then
 362                                         RESUME_DEV=$(blkid -l -t "${REAL_RESUME}" | cut -d ":" -f 1 2>/dev/null)
 363                                         retval=$?
 364                                 fi
 365
 366                                 if [ ${retval} -eq 0 ] && [ -n "${RESUME_DEV}" ]; then
 367                                         good_msg "Detected real_resume=${RESUME_DEV}"
 368                                         REAL_RESUME="${RESUME_DEV}"
 369                                 fi
 370                                 ;;
 371                 esac
 372
 373                 do_resume
 374         fi
 375 fi
 376
 377 mkdir -p "${NEW_ROOT}"
 378 CHROOT="${NEW_ROOT}"
 379
 380 # Run debug shell if requested
 381 rundebugshell
 382
 383 if [ "${CDROOT}" = '1' ]
 384 then
 385         good_msg "Making tmpfs for ${NEW_ROOT}"
 386         mount -n -t tmpfs tmpfs "${NEW_ROOT}"
 387
 388         for i in dev mnt mnt/livecd mnt/key tmp tmp/.initrd mnt/gentoo sys
 389         do
 390                 mkdir -p "${NEW_ROOT}/${i}"
 391                 chmod 755 "${NEW_ROOT}/${i}"
 392         done
 393         [ ! -d "${CDROOT_PATH}" ] && mkdir -p "${CDROOT_PATH}"
 394         [ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
 395         [ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console c 5 1
 396
 397         # For SGI LiveCDs ...
 398         if [ "${LOOPTYPE}" = "sgimips" ]
 399         then
 400                 [ ! -e "${NEW_ROOT}/dev/sr0" ] && mknod "${NEW_ROOT}/dev/sr0" b 11 0
 401                 [ ! -e "${NEW_ROOT}/dev/loop0" ] && mknod "${NEW_ROOT}/dev/loop0" b 7 0
 402         fi
 403
 404         # Required for splash to work.  Not an issue with the initrd as this
 405         # device isn't created there and is not needed.
 406         if [ -e /dev/tty1 ]
 407         then
 408                 [ ! -e "${NEW_ROOT}/dev/tty1" ] && mknod "${NEW_ROOT}/dev/tty1" c 4 1
 409         fi
 410
 411         if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
 412         then
 413                 bootstrapCD
 414         fi
 415
 416         if [ "${REAL_ROOT}" = '' ]
 417         then
 418                 echo -n -e "${WARN}>>${NORMAL}${BOLD} No bootable medium found. Waiting for new devices"
 419
 420                 COUNTER=0
 421                 while [ ${COUNTER} -lt 3 ]; do
 422                         sleep 3
 423                         echo -n '.'
 424                         let COUNTER=${COUNTER}+1
 425                 done
 426
 427                 sleep 1
 428                 echo -e "${NORMAL}"
 429                 bootstrapCD
 430         fi
 431
 432         if [ "${REAL_ROOT}" = '' ]
 433         then
 434                 # Undo stuff
 435                 umount  "${NEW_ROOT}/dev" 2>/dev/null
 436                 umount  "${NEW_ROOT}/sys" 2>/dev/null
 437                 umount /sys 2>/dev/null
 438
 439                 umount  "${NEW_ROOT}"
 440                 rm -rf  "${NEW_ROOT}/*"
 441
 442                 bad_msg 'Could not find CD to boot, something else needed!'
 443                 CDROOT=0
 444         fi
 445 fi
 446
 447 # Determine root device
 448 good_msg 'Determining root device...'
 449 while true
 450 do
 451         while [ "${got_good_root}" != '1' ]
 452         do
 453                 case "${REAL_ROOT}" in
 454                         LABEL=*|UUID=*)
 455
 456                                 ROOT_DEV=""
 457                                 retval=1
 458
 459                                 if [ ${retval} -ne 0 ]; then
 460                                         ROOT_DEV=$(findfs "${REAL_ROOT}" 2>/dev/null)
 461                                         retval=$?
 462                                 fi
 463
 464                                 if [ ${retval} -ne 0 ]; then
 465                                         ROOT_DEV=$(busybox findfs "${REAL_ROOT}" 2>/dev/null)
 466                                         retval=$?
 467                                 fi
 468
 469                                 if [ ${retval} -ne 0 ]; then
 470                                         ROOT_DEV=$(blkid -l -t "${REAL_ROOT}" | cut -d ":" -f 1 2>/dev/null)
 471                                         retval=$?
 472                                 fi
 473
 474                                 if [ ${retval} -eq 0 ] && [ -n "${ROOT_DEV}" ]; then
 475                                         good_msg "Detected real_root=${ROOT_DEV}"
 476                                         REAL_ROOT="${ROOT_DEV}"
 477                                 else
 478                                         prompt_user "REAL_ROOT" "root block device"
 479                                         got_good_root=0
 480                                         continue
 481                                 fi
 482                                 ;;
 483                         ZFS*)
 484                                 ROOT_DEV="${REAL_ROOT#*=}"
 485                                 if [ "${ROOT_DEV}" != 'ZFS' ]
 486                                 then
 487                                         zfs get type ${ROOT_DEV} > /dev/null
 488
 489                                         if [ "$?" = '0' ]
 490                                         then
 491                                                 got_good_root=1;
 492                                                 REAL_ROOT=${ROOT_DEV}
 493                                                 ROOTFSTYPE=zfs
 494                                         fi
 495                                 else
 496                                         BOOTFS=$(/sbin/zpool list -H -o bootfs)
 497                                         if [ "${BOOTFS}" != '-' ]
 498                                         then
 499
 500                                                 for i in ${BOOTFS}
 501                                                 do
 502
 503                                                         zfs get type ${i} > /dev/null
 504                                                         retval=$?
 505
 506                                                         if [ ${retval} -eq 0 ]; then
 507                                                                 got_good_root=1
 508                                                                 REAL_ROOT=${i}
 509                                                                 ROOTFSTYPE=zfs
 510                                                                 break
 511                                                         fi
 512
 513                                                 done;
 514
 515                                         fi
 516
 517                                 fi
 518
 519                                 if [ ${got_good_root} -ne 1 ]; then
 520                                         prompt_user "REAL_ROOT" "root block device"
 521                                         got_good_root=0
 522                                 fi
 523
 524                                 continue
 525                                 ;;
 526                 esac
 527
 528                 if [ "${REAL_ROOT}" = '' ]
 529                 then
 530                         # No REAL_ROOT determined/specified. Prompt user for root block device.
 531                         prompt_user "REAL_ROOT" "root block device"
 532                         got_good_root=0
 533
 534                 # Check for a block device or /dev/nfs
 535                 elif [ -b "${REAL_ROOT}" ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 536                 then
 537                         got_good_root=1
 538
 539                 else
 540                         bad_msg "Block device ${REAL_ROOT} is not a valid root device..."
 541                         REAL_ROOT=""
 542                         got_good_root=0
 543                 fi
 544         done
 545
 546
 547         if [ "${CDROOT}" = 1 -a "${got_good_root}" = '1' -a "${REAL_ROOT}" != "/dev/nfs" ]
 548         then
 549                 # CD already mounted; no further checks necessary
 550                 break
 551         elif [ "${LOOPTYPE}" = "sgimips" ]
 552         then
 553                 # sgimips mounts the livecd root partition directly
 554                 # there is no isofs filesystem to worry about
 555                 break
 556         else
 557                 good_msg "Mounting $REAL_ROOT as root..."
 558
 559                 if [ "${ROOTFSTYPE}" = 'zfs' ]
 560                 then
 561                         MOUNT_STATE=rw
 562                 else
 563                         MOUNT_STATE=ro
 564                 fi
 565
 566                 # Try to mount the device as ${NEW_ROOT}
 567                 if [ "${REAL_ROOT}" = '/dev/nfs' ]; then
 568                         findnfsmount
 569                 else
 570                         # If $REAL_ROOT is a symlink
 571                         # Resolve it like util-linux mount does
 572                         [ -L ${REAL_ROOT} ] && REAL_ROOT=`readlink ${REAL_ROOT}`
 573                         # mount ro so fsck doesn't barf later
 574                         if [ "${REAL_ROOTFLAGS}" = '' ]; then
 575                                 good_msg "Using mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE}"
 576                                 mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE} ${REAL_ROOT} ${NEW_ROOT}
 577                         else
 578                                 good_msg "Using mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE},${REAL_ROOTFLAGS}"
 579                                 mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE},${REAL_ROOTFLAGS} ${REAL_ROOT} ${NEW_ROOT}
 580                         fi
 581                 fi
 582
 583                 # If mount is successful break out of the loop
 584                 # else not a good root and start over.
 585                 if [ "$?" = '0' ]
 586                 then
 587                         if [ -d ${NEW_ROOT}/dev -a -x ${NEW_ROOT}/sbin/init ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 588                         then
 589                                 break
 590                         else
 591                                 bad_msg "The filesystem mounted at ${REAL_ROOT} does not appear to be a valid /, try again"
 592                                 got_good_root=0
 593                                 REAL_ROOT=''
 594                         fi
 595                 else
 596                         bad_msg "Could not mount specified ROOT, try again"
 597                         got_good_root=0
 598                         REAL_ROOT=''
 599                 fi
 600         fi
 601 done
 602 # End determine root device
 603
 604 #verbose_kmsg
 605
 606 # If CD root is set determine the looptype to boot
 607 if [ "${CDROOT}" = '1' ]
 608 then
 609         good_msg 'Determining looptype ...'
 610         cd "${NEW_ROOT}"
 611
 612         # Find loop and looptype
 613         [ -z "${LOOP}" ] && find_loop
 614         [ -z "${LOOPTYPE}" ] && find_looptype
 615
 616         cache_cd_contents
 617
 618         # If encrypted, find key and mount, otherwise mount as usual
 619         if [ -n "${CRYPT_ROOT}" ]
 620         then
 621                 CRYPT_ROOT_KEY="$(head -n 1 "${CDROOT_PATH}"/livecd)"
 622                 CRYPT_ROOT='/dev/loop0'
 623                 good_msg 'You booted an encrypted livecd' "${CRYPT_SILENT}"
 624
 625                 losetup /dev/loop0 "${CDROOT_PATH}/${LOOPEXT}${LOOP}"
 626                 test_success 'Preparing loop filesystem'
 627
 628                 startLUKS
 629
 630                 case ${LOOPTYPE} in
 631                         normal)
 632                                 MOUNTTYPE="ext2"
 633                                 ;;
 634                         *)
 635                                 MOUNTTYPE="${LOOPTYPE}"
 636                                 ;;
 637                 esac
 638                 mount -t "${MOUNTTYPE}" -o ro /dev/mapper/root "${NEW_ROOT}/mnt/livecd"
 639                 test_success 'Mount filesystem'
 640                 FS_LOCATION='mnt/livecd'
 641         # Setup the loopback mounts, if unencrypted
 642         else
 643                 if [ "${LOOPTYPE}" = 'normal' ]
 644                 then
 645                         good_msg 'Mounting loop filesystem'
 646                         mount -t ext2 -o loop,ro "${CDROOT_PATH}/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 647                         test_success 'Mount filesystem'
 648                         FS_LOCATION='mnt/livecd'
 649                 elif [ "${LOOPTYPE}" = 'squashfs' ]
 650                 then
 651                         if [ "${USE_AUFS_NORMAL}" != '1' ]; then
 652                                 good_msg 'Mounting squashfs filesystem'
 653                                 _CACHED_SQUASHFS_PATH="${NEW_ROOT}/mnt/${LOOP}"
 654                                 _squashfs_path="${CDROOT_PATH}/${LOOPEXT}${LOOP}"  # Default to uncached
 655                                 # Upgrade to cached version if possible
 656                                 [ "${DO_cache}" -a -f "${_CACHED_SQUASHFS_PATH}" ] \
 657                                                 && _squashfs_path=${_CACHED_SQUASHFS_PATH}
 658                                 mount -t squashfs -o loop,ro "${_squashfs_path}" "${NEW_ROOT}/mnt/livecd" || {
 659                                         bad_msg "Squashfs filesystem could not be mounted, dropping into shell."
 660                                         if [ -e /proc/filesystems ]; then
 661                                                 fgrep -q squashfs /proc/filesystems || \
 662                                                         bad_msg "HINT: Your kernel does not know filesystem \"squashfs\"."
 663                                         fi
 664                                         do_rundebugshell
 665                                 }
 666                         else
 667                                 good_msg 'Mounting squashfs & aufs filesystems'
 668                                 setup_squashfs_aufs
 669                                 test_success 'Mount filesystem'
 670                         fi
 671                         FS_LOCATION='mnt/livecd'
 672                 elif [ "${LOOPTYPE}" = 'gcloop' ]
 673                 then
 674                         good_msg 'Mounting gcloop filesystem'
 675                         echo ' ' | losetup -E 19 -e ucl-0 -p0 "${NEW_ROOT}/dev/loop0" "${CDROOT_PATH}/${LOOPEXT}${LOOP}"
 676                         test_success 'losetup the loop device'
 677
 678                         mount -t ext2 -o ro "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/livecd"
 679                         test_success 'Mount the losetup loop device'
 680                         FS_LOCATION='mnt/livecd'
 681                 elif [ "${LOOPTYPE}" = 'zisofs' ]
 682                 then
 683                         FS_LOCATION="${CDROOT_PATH/\/}/${LOOPEXT}${LOOP}"
 684                 elif [ "${LOOPTYPE}" = 'noloop' ]
 685                 then
 686                         FS_LOCATION="${CDROOT_PATH/\/}"
 687                 elif [ "${LOOPTYPE}" = 'sgimips' ]
 688                 then
 689                         # getdvhoff finds the starting offset (in bytes) of the squashfs
 690                         # partition on the cdrom and returns this offset for losetup
 691                         #
 692                         # All currently supported SGI Systems use SCSI CD-ROMs, so
 693                         # so we know that the CD-ROM is usually going to be /dev/sr0.
 694                         #
 695                         # We use the value given to losetup to set /dev/loop0 to point
 696                         # to the liveCD root partition, and then mount /dev/loop0 as
 697                         # the LiveCD rootfs
 698                         good_msg 'Locating the SGI LiveCD Root Partition'
 699                         echo ' ' | \
 700                                 losetup -o $(getdvhoff "${NEW_ROOT}${REAL_ROOT}" 0) \
 701                                         "${NEW_ROOT}${CDROOT_DEV}" \
 702                                         "${NEW_ROOT}${REAL_ROOT}"
 703                         test_success 'losetup /dev/sr0 /dev/loop0'
 704
 705                         good_msg 'Mounting the Root Partition'
 706                         mount -t squashfs -o ro "${NEW_ROOT}${CDROOT_DEV}" "${NEW_ROOT}/mnt/livecd"
 707                         test_success 'mount /dev/loop0 /'
 708                         FS_LOCATION='mnt/livecd'
 709                 fi
 710         fi
 711
 712
 713
 714         # Unpacking additional packages from NFS mount
 715         # This is useful for adding kernel modules to /lib
 716         # We do this now, so that additional packages can add whereever they want.
 717         if [ "${REAL_ROOT}" = '/dev/nfs' ]
 718         then
 719                 if [ -e "${CDROOT_PATH}/add" ]
 720                 then
 721                                 for targz in $(ls ${CDROOT_PATH}/add/*.tar.gz)
 722                                 do
 723                                         tarname=$(basename ${targz})
 724                                         good_msg "Adding additional package ${tarname}"
 725                                         (cd ${NEW_ROOT} ; /bin/tar -xzf ${targz})
 726                                 done
 727                 fi
 728         fi
 729
 730
 731         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 732         then
 733                 setup_unionfs ${NEW_ROOT} /${FS_LOCATION}
 734                 CHROOT=/union
 735         elif [ "${USE_AUFS_NORMAL}" != '1' ]; then
 736
 737         good_msg "Copying read-write image contents to tmpfs"
 738         # Copy over stuff that should be writable
 739         (cd "${NEW_ROOT}/${FS_LOCATION}"; cp -a ${ROOT_TREES} "${NEW_ROOT}") || {
 740                 bad_msg "Copying failed, dropping into a shell."
 741                 do_rundebugshell
 742         }
 743
 744         # Now we do the links.
 745         for x in ${ROOT_LINKS}
 746         do
 747                 if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
 748                 then
 749                         ln -s "$(readlink ${NEW_ROOT}/${FS_LOCATION}/${x})" "${x}" 2>/dev/null
 750                 else
 751                         # List all subdirectories of x
 752                         find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null | while read directory
 753                         do
 754                                 # Strip the prefix of the FS_LOCATION
 755                                 directory="${directory#${NEW_ROOT}/${FS_LOCATION}/}"
 756
 757                                 # Skip this directory if we already linked a parent directory
 758                                 if [ "${current_parent}" != '' ]; then
 759                                         var=$(echo "${directory}" | grep "^${current_parent}")
 760                                         if [ "${var}" != '' ]; then
 761                                                 continue
 762                                         fi
 763                                 fi
 764                                 # Test if the directory exists already
 765                                 if [ -e "/${NEW_ROOT}/${directory}" ]
 766                                 then
 767                                         # It does exist, link all the individual files
 768                                         for file in $(ls /${NEW_ROOT}/${FS_LOCATION}/${directory})
 769                                         do
 770                                         if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ] && [ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
 771                                                         ln -s "/${FS_LOCATION}/${directory}/${file}" "${directory}/${file}" 2> /dev/null
 772                                                 fi
 773                                         done
 774                                 else
 775                                         # It does not exist, make a link to the livecd
 776                                         ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
 777                                         current_parent="${directory}"
 778                                 fi
 779                         done
 780                 fi
 781         done
 782
 783         mkdir initramfs proc tmp sys 2>/dev/null
 784         chmod 1777 tmp
 785
 786         fi
 787
 788         #UML=$(cat /proc/cpuinfo|grep UML|sed -e 's|model name.*: ||')
 789         #if [ "${UML}" = 'UML' ]
 790         #then
 791         #       # UML Fixes
 792         #       good_msg 'Updating for uml system'
 793         #fi
 794
 795         # Let Init scripts know that we booted from CD
 796         export CDBOOT
 797         CDBOOT=1
 798 else
 799         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 800         then
 801                 mkdir /union_changes
 802                 mount -t tmpfs tmpfs /union_changes
 803                 setup_unionfs /union_changes ${NEW_ROOT}
 804                 mkdir -p ${UNION}/tmp/.initrd
 805         fi
 806 fi
 807
 808 # Mount the additional things as required by udev & systemd
 809 if [ -f ${NEW_ROOT}/etc/initramfs.mounts ]; then
 810         fslist=$(get_mounts_list)
 811 else
 812         fslist="/usr"
 813 fi
 814
 815 for fs in $fslist; do
 816         dev=$(get_mount_device $fs)
 817         [ -z "${dev}" ] && continue
 818         # Resolve it like util-linux mount does
 819         [ -L ${dev} ] && dev=`readlink ${dev}`
 820         # In this case, it's probably part of the filesystem
 821         # and not a mountpoint
 822         [ -z "$dev" ] && continue
 823         fstype=$(get_mount_fstype $fs)
 824         # ro must be trailing, and the options will always contain at least 'defaults'
 825         opts="$(get_mount_options $fs | strip_mount_options),ro"
 826         mnt=${NEW_ROOT}${fs}
 827         cmd="mount -t $fstype -o $opts $dev $mnt"
 828         good_msg "Mounting $dev as ${fs}: $cmd"
 829         if ! $cmd; then
 830                 bad_msg "Unable to mount $dev for $fs"
 831         fi
 832 done
 833
 834 # Execute script on the cdrom just before boot to update things if necessary
 835 cdupdate
 836
 837 if [ "${SUBDIR}" != '' -a -e "${CHROOT}/${SUBDIR}" ]
 838 then
 839         good_msg "Entering ${SUBDIR} to boot"
 840         CHROOT="${CHROOT}/${SUBDIR}"
 841 fi
 842
 843 verbose_kmsg
 844
 845 echo -ne "${GOOD}>>${NORMAL}${BOLD} Booting (initramfs)${NORMAL}"
 846
 847 cd "${CHROOT}"
 848 mkdir "${CHROOT}/proc" "${CHROOT}/sys" 2>/dev/null
 849 echo -ne "${BOLD}.${NORMAL}"
 850
 851 # If devtmpfs is mounted, try move it to the new root
 852 # If that fails, try to unmount all possible mounts of devtmpfs as stuff breaks otherwise
 853 for fs in /dev /sys /proc
 854 do
 855         if grep -qs "$fs" /proc/mounts
 856         then
 857                 if ! mount --move $fs "${CHROOT}"$fs
 858                 then
 859                         umount $fs || echo '*: Failed to move and unmount the ramdisk $fs!'
 860                 fi
 861         fi
 862 done
 863
 864 if [ ! -e "${CHROOT}/dev/console" ] || [ ! -e "${CHROOT}/dev/null" ]
 865 then
 866         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing files required to boot (console and null)${NORMAL}"
 867 elif [ -e /etc/initrd.splash -a ! -e "${CHROOT}/dev/tty1" ]
 868 then
 869         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing tty1, which is required for splash${NORMAL}"
 870 fi
 871
 872 echo -e "${BOLD}.${NORMAL}"
 873
 874 exec /sbin/switch_root -c "/dev/console" "${CHROOT}" "${REAL_INIT:-/sbin/init}" "${INIT_OPTS}"
 875
 876 # If we get here, something bad has happened
 877 splash 'verbose'
 878
 879 echo "A fatal error has probably occured since ${REAL_INIT:-/sbin/init} did not"
 880 echo "boot correctly. Trying to open a shell..."
 881 echo
 882 exec /bin/bash
 883 exec /bin/sh
 884 exec /bin/ash
 885 exec /bin/dash
 886 exec sh