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 mkdir -p /etc/cmdline /etc/modprobe.d
  43 for x in ${CMDLINE}
  44 do
  45         case "${x}" in
  46                 real_root=*)
  47                         REAL_ROOT=${x#*=}
  48                 ;;
  49                 root=*)
  50                         FAKE_ROOT=${x#*=}
  51                 ;;
  52                 subdir=*)
  53                         SUBDIR=${x#*=}
  54                 ;;
  55                 real_init=*)
  56                         REAL_INIT=${x#*=}
  57                 ;;
  58                 init_opts=*)
  59                         INIT_OPTS=${x#*=}
  60                 ;;
  61                 # Livecd options
  62                 cdroot)
  63                         CDROOT=1
  64                 ;;
  65                 cdroot=*)
  66                         CDROOT=1
  67                         CDROOT_DEV=${x#*=}
  68                 ;;
  69                 cdroot_type=*)
  70                         CDROOT_TYPE=${x#*=}
  71                 ;;
  72                 # Start livecd loop, looptype options
  73                 loop=*)
  74                         LOOP=${x#*=}
  75                 ;;
  76                 looptype=*)
  77                         LOOPTYPE=${x#*=}
  78                 ;;
  79                 isoboot=*)
  80                         ISOBOOT=${x#*=}
  81                 ;;
  82                 # Start Volume manager options
  83                 dolvm)
  84                         USE_LVM_NORMAL=1
  85                 ;;
  86                 dolvm2)
  87                         bad_msg 'Using dolvm2 is deprecated, use dolvm, instead.'
  88                         USE_LVM_NORMAL=1
  89                 ;;
  90                 domdadm)
  91                         USE_MDADM=1
  92                 ;;
  93                 dodmraid)
  94                         USE_DMRAID_NORMAL=1
  95                 ;;
  96                 dodmraid=*)
  97                         DMRAID_OPTS=${x#*=}
  98                         USE_DMRAID_NORMAL=1
  99                 ;;
 100                 dozfs*)
 101                         USE_ZFS=1
 102
 103                         if [ "${x#*=}" = 'force' ]
 104                         then
 105                                 ZPOOL_FORCE=-f
 106                         fi
 107                 ;;
 108                 # Debug Options
 109                 debug)
 110                         DEBUG='yes'
 111                 ;;
 112                 # Scan delay options
 113                 scandelay=*)
 114                         SDELAY=${x#*=}
 115                 ;;
 116                 scandelay)
 117                         SDELAY=3
 118                 ;;
 119                 # Module no-loads
 120                 doload=*)
 121                         MDOLIST=${x#*=}
 122                         MDOLIST=$(echo ${MDOLIST} | sed -e 's/,/ /g')
 123                 ;;
 124                 nodetect)
 125                         NODETECT=1
 126                 ;;
 127                 noload=*)
 128                         MLIST=${x#*=}
 129                         MLIST="$(echo ${MLIST} | sed -e 's/,/ /g')"
 130                         export MLIST
 131                 ;;
 132                 # Redirect output to a specific tty
 133                 CONSOLE=*|console=*)
 134                         CONSOLE=${x#*=}
 135                         CONSOLE=$(basename ${CONSOLE})
 136 #                       exec >${CONSOLE} <${CONSOLE} 2>&1
 137                 ;;
 138                 # /dev/md
 139                 lvmraid=*)
 140                         RAID_DEVICES="${x#*=}"
 141                         RAID_DEVICES="$(echo ${RAID_DEVICES} | sed -e 's/,/ /g')"
 142                         USE_LVM_NORMAL=1
 143                 ;;
 144                 part=*)
 145                         MDPART=${x#*=}
 146                 ;;
 147                 # NFS
 148                 ip=*)
 149                         IP=${x#*=}
 150                 ;;
 151                 nfsroot=*)
 152                         NFSROOT=${x#*=}
 153                 ;;
 154                 # iSCSI
 155                 iscsi_initiatorname=*)
 156                         ISCSI_INITIATORNAME=${x#*=}
 157                 ;;
 158                 iscsi_target=*)
 159                         ISCSI_TARGET=${x#*=}
 160                 ;;
 161                 iscsi_tgpt=*)
 162                         ISCSI_TGPT=${x#*=}
 163                 ;;
 164                 iscsi_address=*)
 165                         ISCSI_ADDRESS=${x#*=}
 166                 ;;
 167                 iscsi_port=*)
 168                         ISCSI_PORT=${x#*=}
 169                 ;;
 170                 iscsi_username=*)
 171                         ISCSI_USERNAME=${x#*=}
 172                 ;;
 173                 iscsi_password=*)
 174                         ISCSI_PASSWORD=${x#*=}
 175                 ;;
 176                 iscsi_username_in=*)
 177                         ISCSI_USERNAME_IN=${x#*=}
 178                 ;;
 179                 iscsi_password_in=*)
 180                         ISCSI_PASSWORD_IN=${x#*=}
 181                 ;;
 182                 iscsi_debug=*)
 183                         ISCSI_DEBUG=${x#*=}
 184                 ;;
 185                 iscsi_noibft)
 186                         ISCSI_NOIBFT=1
 187                 ;;
 188                 # Crypto
 189                 crypt_root=*)
 190                         CRYPT_ROOT=${x#*=}
 191                 ;;
 192                 crypt_swap=*)
 193                         CRYPT_SWAP=${x#*=}
 194                 ;;
 195                 root_key=*)
 196                         CRYPT_ROOT_KEY=${x#*=}
 197                 ;;
 198                 root_keydev=*)
 199                         CRYPT_ROOT_KEYDEV=${x#*=}
 200                 ;;
 201                 root_trim=*)
 202                         CRYPT_ROOT_TRIM=${x#*=}
 203                 ;;
 204
 205                 swap_key=*)
 206                         CRYPT_SWAP_KEY=${x#*=}
 207                 ;;
 208                 swap_keydev=*)
 209                         CRYPT_SWAP_KEYDEV=${x#*=}
 210                 ;;
 211                 real_resume=*|resume=*)
 212                         REAL_RESUME=${x#*=}
 213                 ;;
 214                 noresume)
 215                         NORESUME=1
 216                 ;;
 217                 crypt_silent)
 218                         CRYPT_SILENT=1
 219                 ;;
 220                 real_rootflags=*)
 221                         REAL_ROOTFLAGS=${x#*=}
 222                 ;;
 223                 rootfstype=*)
 224                         ROOTFSTYPE=${x#*=}
 225                 ;;
 226                 keymap=*)
 227                         keymap=${x#*=}
 228                 ;;
 229                 aufs)
 230                         USE_AUFS_NORMAL=1
 231                 ;;
 232                 unionfs)
 233                         if [ ! -x /sbin/unionfs ]
 234                         then
 235                                 USE_UNIONFS_NORMAL=0
 236                                 bad_msg 'unionfs binary not found: aborting use of unionfs!'
 237                         else
 238                                 USE_UNIONFS_NORMAL=1
 239                         fi
 240                         ;;
 241                 nounionfs)
 242                         USE_UNIONFS_NORMAL=0
 243                         ;;
 244                 *=*)
 245                         case "${x%%=*}" in
 246                         *.*)
 247                                 echo "${x#*.}" >> "/etc/module_options/${x%%.*}.conf"
 248                         ;;
 249                         esac
 250                 ;;
 251         esac
 252 done
 253
 254 if [ -z "${REAL_ROOT}" -a \( "${CDROOT}" = '0' \)  -a \( "${FAKE_ROOT}" != "/dev/ram0" \) ]
 255 then
 256         REAL_ROOT="${FAKE_ROOT}"
 257 fi
 258
 259 # Set variables based on the value of REAL_ROOT
 260 case "${REAL_ROOT}" in
 261         ZFS=*)
 262                 ZFS_POOL=${REAL_ROOT#*=}
 263                 ZFS_POOL=${ZFS_POOL%%/*}
 264                 USE_ZFS=1
 265         ;;
 266         ZFS)
 267                 USE_ZFS=1
 268         ;;
 269 esac
 270
 271 # Verify that it is safe to use ZFS
 272 if [ "USE_ZFS" = "1" ]
 273 then
 274         if [ -x /sbin/zfs -a -x /sbin/zpool ]
 275         then
 276                 MY_HWOPTS="${MY_HWOPTS} zfs"
 277         else
 278                 USE_ZFS=0
 279
 280                 [ -x /sbin/zfs ] || bad_msg '/sbin/zfs not found!'
 281                 [ -x /sbin/zpool ] || bad_msg '/sbin/zpool not found!'
 282                 bad_msg 'Aborting use of zfs!'
 283         fi
 284 fi
 285
 286 splash 'init'
 287
 288 cmdline_hwopts
 289
 290 # Mount devfs
 291 mount_devfs
 292
 293 # Mount sysfs
 294 mount_sysfs
 295
 296 # Start mdev
 297 if [ "${KV_2_6_OR_GREATER}" ]
 298 then
 299         good_msg 'Activating mdev'
 300
 301         # Serialize hotplug events
 302         touch /dev/mdev.seq
 303
 304         # Setup hotplugging for firmware loading
 305         echo /sbin/mdev > /proc/sys/kernel/hotplug
 306
 307         # Setup mdev netlink socket daemon
 308         ( cd /sys && mdev -s ) || bad_msg "Failed to receive dynamic updates from mdev"
 309 fi
 310
 311 # Load modules listed in MY_HWOPTS if /lib/modules exists for the running kernel
 312 if [ -z "${DO_modules}" ]
 313 then
 314         good_msg 'Skipping module load; disabled via commandline'
 315 elif [ -d "/lib/modules/${KV}" ]
 316 then
 317         good_msg 'Loading modules'
 318         # Load appropriate kernel modules
 319         if [ "${NODETECT}" != '1' ]
 320         then
 321                 for modules in ${MY_HWOPTS}
 322                 do
 323                         modules_scan ${modules}
 324                 done
 325         fi
 326         # Always eval doload=...
 327         modules_load ${MDOLIST}
 328 else
 329         good_msg 'Skipping module load; no modules in the ramdisk!'
 330 fi
 331
 332 # Apply scan delay if specified
 333 sdelay
 334
 335 # Setup slow USB bits
 336 setup_slowusb
 337
 338 cd /
 339
 340 # if doslowusb is passed, pause other 10 seconds here, after mdev load
 341 [ "${DO_slowusb}" ] && sleep 10
 342
 343 # Start iSCSI
 344 if [ -e /bin/iscsistart ]
 345 then
 346         startiscsi
 347 fi
 348
 349 # Setup btrfs, see bug 303529
 350 setup_btrfsctl
 351
 352 # Setup md device nodes if they dont exist
 353 setup_md_device
 354
 355 # Scan volumes
 356 startVolumes
 357
 358 setup_keymap
 359
 360 # Initialize LUKS root device except for livecd's
 361 if [ "${CDROOT}" != 1 ]
 362 then
 363         startLUKS
 364         if [ "${NORESUME}" != '1' ] && [ -n "${REAL_RESUME}" ]
 365         then
 366                 case "${REAL_RESUME}" in
 367                         LABEL=*|UUID=*)
 368
 369                                 RESUME_DEV=""
 370                                 retval=1
 371
 372                                 if [ ${retval} -ne 0 ]; then
 373                                         RESUME_DEV=$(findfs "${REAL_RESUME}" 2>/dev/null)
 374                                         retval=$?
 375                                 fi
 376
 377                                 if [ ${retval} -ne 0 ]; then
 378                                         RESUME_DEV=$(busybox findfs "${REAL_RESUME}" 2>/dev/null)
 379                                         retval=$?
 380                                 fi
 381
 382                                 if [ ${retval} -ne 0 ]; then
 383                                         RESUME_DEV=$(blkid -o device -l -t "${REAL_RESUME}")
 384                                         retval=$?
 385                                 fi
 386
 387                                 if [ ${retval} -eq 0 ] && [ -n "${RESUME_DEV}" ]; then
 388                                         good_msg "Detected real_resume=${RESUME_DEV}"
 389                                         REAL_RESUME="${RESUME_DEV}"
 390                                 fi
 391                                 ;;
 392                 esac
 393
 394                 do_resume
 395         fi
 396 fi
 397
 398 mkdir -p "${NEW_ROOT}"
 399 CHROOT="${NEW_ROOT}"
 400
 401 # Run debug shell if requested
 402 rundebugshell
 403
 404 if [ "${CDROOT}" = '1' ]
 405 then
 406         good_msg "Making tmpfs for ${NEW_ROOT}"
 407         mount -n -t tmpfs tmpfs "${NEW_ROOT}"
 408
 409         for i in dev mnt mnt/livecd mnt/key tmp tmp/.initrd mnt/gentoo sys
 410         do
 411                 mkdir -p "${NEW_ROOT}/${i}"
 412                 chmod 755 "${NEW_ROOT}/${i}"
 413         done
 414         [ ! -d "${CDROOT_PATH}" ] && mkdir -p "${CDROOT_PATH}"
 415         [ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
 416         [ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console c 5 1
 417
 418         # For SGI LiveCDs ...
 419         if [ "${LOOPTYPE}" = "sgimips" ]
 420         then
 421                 [ ! -e "${NEW_ROOT}/dev/sr0" ] && mknod "${NEW_ROOT}/dev/sr0" b 11 0
 422                 [ ! -e "${NEW_ROOT}/dev/loop0" ] && mknod "${NEW_ROOT}/dev/loop0" b 7 0
 423         fi
 424
 425         # Required for splash to work.  Not an issue with the initrd as this
 426         # device isn't created there and is not needed.
 427         if [ -e /dev/tty1 ]
 428         then
 429                 [ ! -e "${NEW_ROOT}/dev/tty1" ] && mknod "${NEW_ROOT}/dev/tty1" c 4 1
 430         fi
 431
 432         if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
 433         then
 434                 bootstrapCD
 435         fi
 436
 437         if [ "${REAL_ROOT}" = '' ]
 438         then
 439                 echo -n -e "${WARN}>>${NORMAL}${BOLD} No bootable medium found. Waiting for new devices"
 440
 441                 COUNTER=0
 442                 while [ ${COUNTER} -lt 3 ]; do
 443                         sleep 3
 444                         echo -n '.'
 445                         let COUNTER=${COUNTER}+1
 446                 done
 447
 448                 sleep 1
 449                 echo -e "${NORMAL}"
 450                 bootstrapCD
 451         fi
 452
 453         if [ "${REAL_ROOT}" = '' ]
 454         then
 455                 # Undo stuff
 456                 umount  "${NEW_ROOT}/dev" 2>/dev/null
 457                 umount  "${NEW_ROOT}/sys" 2>/dev/null
 458                 umount /sys 2>/dev/null
 459
 460                 umount  "${NEW_ROOT}"
 461                 rm -rf  "${NEW_ROOT}/*"
 462
 463                 bad_msg 'Could not find CD to boot, something else needed!'
 464                 CDROOT=0
 465         fi
 466 fi
 467
 468 # Determine root device
 469 good_msg 'Determining root device...'
 470 while true
 471 do
 472         while [ "${got_good_root}" != '1' ]
 473         do
 474                 case "${REAL_ROOT}" in
 475                         LABEL=*|UUID=*)
 476
 477                                 ROOT_DEV=""
 478                                 retval=1
 479
 480                                 if [ ${retval} -ne 0 ]; then
 481                                         ROOT_DEV=$(findfs "${REAL_ROOT}" 2>/dev/null)
 482                                         retval=$?
 483                                 fi
 484
 485                                 if [ ${retval} -ne 0 ]; then
 486                                         ROOT_DEV=$(busybox findfs "${REAL_ROOT}" 2>/dev/null)
 487                                         retval=$?
 488                                 fi
 489
 490                                 if [ ${retval} -ne 0 ]; then
 491                                         ROOT_DEV=$(blkid -o device -l -t "${REAL_ROOT}")
 492                                         retval=$?
 493                                 fi
 494
 495                                 if [ ${retval} -eq 0 ] && [ -n "${ROOT_DEV}" ]; then
 496                                         good_msg "Detected real_root=${ROOT_DEV}"
 497                                         REAL_ROOT="${ROOT_DEV}"
 498                                 else
 499                                         prompt_user "REAL_ROOT" "root block device"
 500                                         got_good_root=0
 501                                         continue
 502                                 fi
 503                                 ;;
 504                         ZFS*)
 505                                 if [ "${USE_ZFS}" = '0' ]; then
 506                                         prompt_user "REAL_ROOT" "root block device"
 507                                         continue
 508                                 fi
 509
 510                                 ROOT_DEV="${REAL_ROOT#*=}"
 511                                 if [ "${ROOT_DEV}" != 'ZFS' ]
 512                                 then
 513                                         if [ "$(zfs get type -o value -H ${ROOT_DEV})" = 'filesystem' ]
 514                                         then
 515                                                 got_good_root=1;
 516                                                 REAL_ROOT=${ROOT_DEV}
 517                                                 ROOTFSTYPE=zfs
 518                                         else
 519                                                 bad_msg "${ROOT_DEV} is not a filesystem"
 520                                                 prompt_user "REAL_ROOT" "root block device"
 521                                                 got_good_root=0
 522                                                 continue
 523                                         fi
 524                                 else
 525                                         BOOTFS=$(/sbin/zpool list -H -o bootfs)
 526                                         if [ "${BOOTFS}" != '-' ]
 527                                         then
 528
 529                                                 for i in ${BOOTFS}
 530                                                 do
 531
 532                                                         zfs get type ${i} > /dev/null
 533                                                         retval=$?
 534
 535                                                         if [ ${retval} -eq 0 ]; then
 536                                                                 got_good_root=1
 537                                                                 REAL_ROOT=${i}
 538                                                                 ROOTFSTYPE=zfs
 539                                                                 break
 540                                                         fi
 541
 542                                                 done;
 543
 544                                         else
 545                                                 got_good_root=0
 546                                         fi
 547
 548                                 fi
 549
 550                                 if [ ${got_good_root} -ne 1 ]; then
 551                                         prompt_user "REAL_ROOT" "root block device"
 552                                         got_good_root=0
 553                                 fi
 554
 555                                 continue
 556                                 ;;
 557                 esac
 558
 559                 if [ "${REAL_ROOT}" = '' ]
 560                 then
 561                         # No REAL_ROOT determined/specified. Prompt user for root block device.
 562                         prompt_user "REAL_ROOT" "root block device"
 563                         got_good_root=0
 564
 565                 # Check for a block device or /dev/nfs
 566                 elif [ -b "${REAL_ROOT}" ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 567                 then
 568                         got_good_root=1
 569
 570                 else
 571                         bad_msg "Block device ${REAL_ROOT} is not a valid root device..."
 572                         REAL_ROOT=""
 573                         got_good_root=0
 574                 fi
 575         done
 576
 577
 578         if [ "${CDROOT}" = 1 -a "${got_good_root}" = '1' -a "${REAL_ROOT}" != "/dev/nfs" ]
 579         then
 580                 # CD already mounted; no further checks necessary
 581                 break
 582         elif [ "${LOOPTYPE}" = "sgimips" ]
 583         then
 584                 # sgimips mounts the livecd root partition directly
 585                 # there is no isofs filesystem to worry about
 586                 break
 587         else
 588                 good_msg "Mounting $REAL_ROOT as root..."
 589
 590                 if [ "${ROOTFSTYPE}" = 'zfs' ]
 591                 then
 592                         if [ "zfs get -H -o value mountpoint ${REAL_ROOT}" = 'legacy' ]
 593                         then
 594                                 MOUNT_STATE=rw
 595                         else
 596                                 MOUNT_STATE=rw,zfsutil
 597                         fi
 598                 else
 599                         MOUNT_STATE=ro
 600                 fi
 601
 602                 # Try to mount the device as ${NEW_ROOT}
 603                 if [ "${REAL_ROOT}" = '/dev/nfs' ]; then
 604                         findnfsmount
 605                 else
 606                         # If $REAL_ROOT is a symlink
 607                         # Resolve it like util-linux mount does
 608                         [ -L ${REAL_ROOT} ] && REAL_ROOT=`readlink ${REAL_ROOT}`
 609                         # mount ro so fsck doesn't barf later
 610                         if [ "${REAL_ROOTFLAGS}" = '' ]; then
 611                                 good_msg "Using mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE}"
 612                                 mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE} ${REAL_ROOT} ${NEW_ROOT}
 613                         else
 614                                 good_msg "Using mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE},${REAL_ROOTFLAGS}"
 615                                 mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE},${REAL_ROOTFLAGS} ${REAL_ROOT} ${NEW_ROOT}
 616                         fi
 617                 fi
 618
 619                 # If mount is successful break out of the loop
 620                 # else not a good root and start over.
 621                 if [ "$?" = '0' ]
 622                 then
 623                         if [ -d ${NEW_ROOT}/dev -a -x ${NEW_ROOT}/sbin/init ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 624                         then
 625                                 break
 626                         else
 627                                 bad_msg "The filesystem mounted at ${REAL_ROOT} does not appear to be a valid /, try again"
 628                                 got_good_root=0
 629                                 REAL_ROOT=''
 630                         fi
 631                 else
 632                         bad_msg "Could not mount specified ROOT, try again"
 633                         got_good_root=0
 634                         REAL_ROOT=''
 635                 fi
 636         fi
 637 done
 638 # End determine root device
 639
 640 #verbose_kmsg
 641
 642 # If CD root is set determine the looptype to boot
 643 if [ "${CDROOT}" = '1' ]
 644 then
 645         good_msg 'Determining looptype ...'
 646         cd "${NEW_ROOT}"
 647
 648         # Find loop and looptype
 649         [ -z "${LOOP}" ] && find_loop
 650         [ -z "${LOOPTYPE}" ] && find_looptype
 651
 652         cache_cd_contents
 653
 654         # If encrypted, find key and mount, otherwise mount as usual
 655         if [ -n "${CRYPT_ROOT}" ]
 656         then
 657                 CRYPT_ROOT_KEY="$(head -n 1 "${CDROOT_PATH}"/livecd)"
 658                 CRYPT_ROOT='/dev/loop0'
 659                 good_msg 'You booted an encrypted livecd' "${CRYPT_SILENT}"
 660
 661                 losetup /dev/loop0 "${CDROOT_PATH}/${LOOPEXT}${LOOP}"
 662                 test_success 'Preparing loop filesystem'
 663
 664                 startLUKS
 665
 666                 case ${LOOPTYPE} in
 667                         normal)
 668                                 MOUNTTYPE="ext2"
 669                                 ;;
 670                         *)
 671                                 MOUNTTYPE="${LOOPTYPE}"
 672                                 ;;
 673                 esac
 674                 mount -t "${MOUNTTYPE}" -o ro /dev/mapper/root "${NEW_ROOT}/mnt/livecd"
 675                 test_success 'Mount filesystem'
 676                 FS_LOCATION='mnt/livecd'
 677         # Setup the loopback mounts, if unencrypted
 678         else
 679                 if [ "${LOOPTYPE}" = 'normal' ]
 680                 then
 681                         good_msg 'Mounting loop filesystem'
 682                         mount -t ext2 -o loop,ro "${CDROOT_PATH}/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 683                         test_success 'Mount filesystem'
 684                         FS_LOCATION='mnt/livecd'
 685                 elif [ "${LOOPTYPE}" = 'squashfs' ]
 686                 then
 687                         if [ "${USE_AUFS_NORMAL}" != '1' ]; then
 688                                 good_msg 'Mounting squashfs filesystem'
 689                                 _CACHED_SQUASHFS_PATH="${NEW_ROOT}/mnt/${LOOP}"
 690                                 _squashfs_path="${CDROOT_PATH}/${LOOPEXT}${LOOP}"  # Default to uncached
 691                                 # Upgrade to cached version if possible
 692                                 [ "${DO_cache}" -a -f "${_CACHED_SQUASHFS_PATH}" ] \
 693                                                 && _squashfs_path=${_CACHED_SQUASHFS_PATH}
 694                                 mount -t squashfs -o loop,ro "${_squashfs_path}" "${NEW_ROOT}/mnt/livecd" || {
 695                                         bad_msg "Squashfs filesystem could not be mounted, dropping into shell."
 696                                         if [ -e /proc/filesystems ]; then
 697                                                 fgrep -q squashfs /proc/filesystems || \
 698                                                         bad_msg "HINT: Your kernel does not know filesystem \"squashfs\"."
 699                                         fi
 700                                         do_rundebugshell
 701                                 }
 702                         else
 703                                 good_msg 'Mounting squashfs & aufs filesystems'
 704                                 setup_squashfs_aufs
 705                                 test_success 'Mount filesystem'
 706                         fi
 707                         FS_LOCATION='mnt/livecd'
 708                 elif [ "${LOOPTYPE}" = 'gcloop' ]
 709                 then
 710                         good_msg 'Mounting gcloop filesystem'
 711                         echo ' ' | losetup -E 19 -e ucl-0 -p0 "${NEW_ROOT}/dev/loop0" "${CDROOT_PATH}/${LOOPEXT}${LOOP}"
 712                         test_success 'losetup the loop device'
 713
 714                         mount -t ext2 -o ro "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/livecd"
 715                         test_success 'Mount the losetup loop device'
 716                         FS_LOCATION='mnt/livecd'
 717                 elif [ "${LOOPTYPE}" = 'zisofs' ]
 718                 then
 719                         FS_LOCATION="${CDROOT_PATH/\/}/${LOOPEXT}${LOOP}"
 720                 elif [ "${LOOPTYPE}" = 'noloop' ]
 721                 then
 722                         FS_LOCATION="${CDROOT_PATH/\/}"
 723                 elif [ "${LOOPTYPE}" = 'sgimips' ]
 724                 then
 725                         # getdvhoff finds the starting offset (in bytes) of the squashfs
 726                         # partition on the cdrom and returns this offset for losetup
 727                         #
 728                         # All currently supported SGI Systems use SCSI CD-ROMs, so
 729                         # so we know that the CD-ROM is usually going to be /dev/sr0.
 730                         #
 731                         # We use the value given to losetup to set /dev/loop0 to point
 732                         # to the liveCD root partition, and then mount /dev/loop0 as
 733                         # the LiveCD rootfs
 734                         good_msg 'Locating the SGI LiveCD Root Partition'
 735                         echo ' ' | \
 736                                 losetup -o $(getdvhoff "${NEW_ROOT}${REAL_ROOT}" 0) \
 737                                         "${NEW_ROOT}${CDROOT_DEV}" \
 738                                         "${NEW_ROOT}${REAL_ROOT}"
 739                         test_success 'losetup /dev/sr0 /dev/loop0'
 740
 741                         good_msg 'Mounting the Root Partition'
 742                         mount -t squashfs -o ro "${NEW_ROOT}${CDROOT_DEV}" "${NEW_ROOT}/mnt/livecd"
 743                         test_success 'mount /dev/loop0 /'
 744                         FS_LOCATION='mnt/livecd'
 745                 fi
 746         fi
 747
 748
 749
 750         # Unpacking additional packages from NFS mount
 751         # This is useful for adding kernel modules to /lib
 752         # We do this now, so that additional packages can add whereever they want.
 753         if [ "${REAL_ROOT}" = '/dev/nfs' ]
 754         then
 755                 if [ -e "${CDROOT_PATH}/add" ]
 756                 then
 757                                 for targz in $(ls ${CDROOT_PATH}/add/*.tar.gz)
 758                                 do
 759                                         tarname=$(basename ${targz})
 760                                         good_msg "Adding additional package ${tarname}"
 761                                         (cd ${NEW_ROOT} ; /bin/tar -xzf ${targz})
 762                                 done
 763                 fi
 764         fi
 765
 766
 767         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 768         then
 769                 setup_unionfs ${NEW_ROOT} /${FS_LOCATION}
 770                 CHROOT=/union
 771         elif [ "${USE_AUFS_NORMAL}" != '1' ]; then
 772
 773         good_msg "Copying read-write image contents to tmpfs"
 774         # Copy over stuff that should be writable
 775         (cd "${NEW_ROOT}/${FS_LOCATION}"; cp -a ${ROOT_TREES} "${NEW_ROOT}") || {
 776                 bad_msg "Copying failed, dropping into a shell."
 777                 do_rundebugshell
 778         }
 779
 780         # Now we do the links.
 781         for x in ${ROOT_LINKS}
 782         do
 783                 if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
 784                 then
 785                         ln -s "$(readlink ${NEW_ROOT}/${FS_LOCATION}/${x})" "${x}" 2>/dev/null
 786                 else
 787                         # List all subdirectories of x
 788                         find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null | while read directory
 789                         do
 790                                 # Strip the prefix of the FS_LOCATION
 791                                 directory="${directory#${NEW_ROOT}/${FS_LOCATION}/}"
 792
 793                                 # Skip this directory if we already linked a parent directory
 794                                 if [ "${current_parent}" != '' ]; then
 795                                         var=$(echo "${directory}" | grep "^${current_parent}")
 796                                         if [ "${var}" != '' ]; then
 797                                                 continue
 798                                         fi
 799                                 fi
 800                                 # Test if the directory exists already
 801                                 if [ -e "/${NEW_ROOT}/${directory}" ]
 802                                 then
 803                                         # It does exist, link all the individual files
 804                                         for file in $(ls /${NEW_ROOT}/${FS_LOCATION}/${directory})
 805                                         do
 806                                         if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ] && [ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
 807                                                         ln -s "/${FS_LOCATION}/${directory}/${file}" "${directory}/${file}" 2> /dev/null
 808                                                 fi
 809                                         done
 810                                 else
 811                                         # It does not exist, make a link to the livecd
 812                                         ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
 813                                         current_parent="${directory}"
 814                                 fi
 815                         done
 816                 fi
 817         done
 818
 819         mkdir initramfs proc tmp sys run 2>/dev/null
 820         chmod 1777 tmp
 821
 822         fi
 823
 824         #UML=$(cat /proc/cpuinfo|grep UML|sed -e 's|model name.*: ||')
 825         #if [ "${UML}" = 'UML' ]
 826         #then
 827         #       # UML Fixes
 828         #       good_msg 'Updating for uml system'
 829         #fi
 830
 831         # Let Init scripts know that we booted from CD
 832         export CDBOOT
 833         CDBOOT=1
 834 else
 835         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 836         then
 837                 mkdir /union_changes
 838                 mount -t tmpfs tmpfs /union_changes
 839                 setup_unionfs /union_changes ${NEW_ROOT}
 840                 mkdir -p ${UNION}/tmp/.initrd
 841         fi
 842 fi
 843
 844 # Mount the additional things as required by udev & systemd
 845 if [ -f ${NEW_ROOT}/etc/initramfs.mounts ]; then
 846         fslist=$(get_mounts_list)
 847 else
 848         fslist="/usr"
 849 fi
 850
 851 for fs in $fslist; do
 852         dev=$(get_mount_device $fs)
 853         [ -z "${dev}" ] && continue
 854         # Resolve it like util-linux mount does
 855         [ -L ${dev} ] && dev=`readlink ${dev}`
 856         # In this case, it's probably part of the filesystem
 857         # and not a mountpoint
 858         [ -z "$dev" ] && continue
 859         fstype=$(get_mount_fstype $fs)
 860         if get_mount_options $fs | fgrep -q bind ; then
 861                 opts='bind'
 862                 dev=${NEW_ROOT}${dev}
 863         else
 864                 # ro must be trailing, and the options will always contain at least 'defaults'
 865                 opts="$(get_mount_options $fs | strip_mount_options),ro"
 866         fi
 867         mnt=${NEW_ROOT}${fs}
 868         cmd="mount -t $fstype -o $opts $dev $mnt"
 869         good_msg "Mounting $dev as ${fs}: $cmd"
 870         if ! $cmd; then
 871                 bad_msg "Unable to mount $dev for $fs"
 872         fi
 873 done
 874
 875 # Execute script on the cdrom just before boot to update things if necessary
 876 cdupdate
 877
 878 if [ "${SUBDIR}" != '' -a -e "${CHROOT}/${SUBDIR}" ]
 879 then
 880         good_msg "Entering ${SUBDIR} to boot"
 881         CHROOT="${CHROOT}/${SUBDIR}"
 882 fi
 883
 884 verbose_kmsg
 885
 886 echo -ne "${GOOD}>>${NORMAL}${BOLD} Booting (initramfs)${NORMAL}"
 887
 888 cd "${CHROOT}"
 889 mkdir "${CHROOT}/proc" "${CHROOT}/sys" "${CHROOT}/run" 2>/dev/null
 890 echo -ne "${BOLD}.${NORMAL}"
 891
 892 # If devtmpfs is mounted, try move it to the new root
 893 # If that fails, try to unmount all possible mounts of devtmpfs as stuff breaks otherwise
 894 for fs in /dev /sys /proc
 895 do
 896         if grep -qs "$fs" /proc/mounts
 897         then
 898                 if ! mount --move $fs "${CHROOT}"$fs
 899                 then
 900                         umount $fs || echo '*: Failed to move and unmount the ramdisk $fs!'
 901                 fi
 902         fi
 903 done
 904
 905 if [ ! -e "${CHROOT}/dev/console" ] || [ ! -e "${CHROOT}/dev/null" ]
 906 then
 907         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing files required to boot (console and null)${NORMAL}"
 908 elif [ -e /etc/initrd.splash -a ! -e "${CHROOT}/dev/tty1" ]
 909 then
 910         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing tty1, which is required for splash${NORMAL}"
 911 fi
 912
 913 echo -e "${BOLD}.${NORMAL}"
 914
 915 exec /sbin/switch_root -c "/dev/console" "${CHROOT}" "${REAL_INIT:-/sbin/init}" "${INIT_OPTS}"
 916
 917 # If we get here, something bad has happened
 918 splash 'verbose'
 919
 920 echo "A fatal error has probably occured since ${REAL_INIT:-/sbin/init} did not"
 921 echo "boot correctly. Trying to open a shell..."
 922 echo
 923 exec /bin/bash
 924 exec /bin/sh
 925 exec /bin/ash
 926 exec /bin/dash
 927 exec sh