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="${MY_HWOPTS} zfs"
 277         else
 278                 USE_ZFS=0
 279
 280                 [ -x /sbin/zfs ] || bad_msg '/sbin/zfs not found!'
 281                 [ -x /sbin/zpool ] || bad_msg '/sbin/zpool not found!'
 282                 bad_msg 'Aborting use of zfs!'
 283         fi
 284 fi
 285
 286 splash 'init'
 287
 288 cmdline_hwopts
 289
 290 # Mount devfs
 291 mount_devfs
 292
 293 # Mount sysfs
 294 mount_sysfs
 295
 296 # Initialize mdev
 297 if [ "${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 fi
 307
 308 # Load modules listed in MY_HWOPTS if /lib/modules exists for the running kernel
 309 if [ -z "${DO_modules}" ]
 310 then
 311         good_msg 'Skipping module load; disabled via commandline'
 312 elif [ -d "/lib/modules/${KV}" ]
 313 then
 314         good_msg 'Loading modules'
 315         # Load appropriate kernel modules
 316         if [ "${NODETECT}" != '1' ]
 317         then
 318                 for modules in ${MY_HWOPTS}
 319                 do
 320                         modules_scan ${modules}
 321                 done
 322         fi
 323         # Always eval doload=...
 324         modules_load ${MDOLIST}
 325 else
 326         good_msg 'Skipping module load; no modules in the ramdisk!'
 327 fi
 328
 329 # Ensure that device nodes are properly configured
 330 if [ "${KV_2_6_OR_GREATER}" ]
 331 then
 332         mdev -s || bad_msg "mdev -s failed"
 333 fi
 334
 335 # Apply scan delay if specified
 336 sdelay
 337
 338 # Setup slow USB bits
 339 setup_slowusb
 340
 341 cd /
 342
 343 # if doslowusb is passed, pause other 10 seconds here, after mdev load
 344 [ "${DO_slowusb}" ] && sleep 10
 345
 346 # Start iSCSI
 347 if [ -e /bin/iscsistart ]
 348 then
 349         startiscsi
 350 fi
 351
 352 # Setup btrfs, see bug 303529
 353 setup_btrfsctl
 354
 355 # Setup md device nodes if they dont exist
 356 setup_md_device
 357
 358 # Scan volumes
 359 startVolumes
 360
 361 setup_keymap
 362
 363 # Initialize LUKS root device except for livecd's
 364 if [ "${CDROOT}" != 1 ]
 365 then
 366         startLUKS
 367         if [ "${NORESUME}" != '1' ] && [ -n "${REAL_RESUME}" ]
 368         then
 369                 case "${REAL_RESUME}" in
 370                         LABEL=*|UUID=*)
 371
 372                                 RESUME_DEV=""
 373                                 retval=1
 374
 375                                 if [ ${retval} -ne 0 ]; then
 376                                         RESUME_DEV=$(findfs "${REAL_RESUME}" 2>/dev/null)
 377                                         retval=$?
 378                                 fi
 379
 380                                 if [ ${retval} -ne 0 ]; then
 381                                         RESUME_DEV=$(busybox findfs "${REAL_RESUME}" 2>/dev/null)
 382                                         retval=$?
 383                                 fi
 384
 385                                 if [ ${retval} -ne 0 ]; then
 386                                         RESUME_DEV=$(blkid -o device -l -t "${REAL_RESUME}")
 387                                         retval=$?
 388                                 fi
 389
 390                                 if [ ${retval} -eq 0 ] && [ -n "${RESUME_DEV}" ]; then
 391                                         good_msg "Detected real_resume=${RESUME_DEV}"
 392                                         REAL_RESUME="${RESUME_DEV}"
 393                                 fi
 394                                 ;;
 395                 esac
 396
 397                 do_resume
 398         fi
 399 fi
 400
 401 mkdir -p "${NEW_ROOT}"
 402 CHROOT="${NEW_ROOT}"
 403
 404 # Run debug shell if requested
 405 rundebugshell
 406
 407 if [ "${CDROOT}" = '1' ]
 408 then
 409         good_msg "Making tmpfs for ${NEW_ROOT}"
 410         mount -n -t tmpfs tmpfs "${NEW_ROOT}"
 411
 412         for i in dev mnt mnt/livecd mnt/key tmp tmp/.initrd mnt/gentoo sys
 413         do
 414                 mkdir -p "${NEW_ROOT}/${i}"
 415                 chmod 755 "${NEW_ROOT}/${i}"
 416         done
 417         [ ! -d "${CDROOT_PATH}" ] && mkdir -p "${CDROOT_PATH}"
 418         [ ! -e "${NEW_ROOT}/dev/null" ] && mknod "${NEW_ROOT}"/dev/null c 1 3
 419         [ ! -e "${NEW_ROOT}/dev/console" ] && mknod "${NEW_ROOT}"/dev/console c 5 1
 420
 421         # For SGI LiveCDs ...
 422         if [ "${LOOPTYPE}" = "sgimips" ]
 423         then
 424                 [ ! -e "${NEW_ROOT}/dev/sr0" ] && mknod "${NEW_ROOT}/dev/sr0" b 11 0
 425                 [ ! -e "${NEW_ROOT}/dev/loop0" ] && mknod "${NEW_ROOT}/dev/loop0" b 7 0
 426         fi
 427
 428         # Required for splash to work.  Not an issue with the initrd as this
 429         # device isn't created there and is not needed.
 430         if [ -e /dev/tty1 ]
 431         then
 432                 [ ! -e "${NEW_ROOT}/dev/tty1" ] && mknod "${NEW_ROOT}/dev/tty1" c 4 1
 433         fi
 434
 435         if [ "${REAL_ROOT}" != "/dev/nfs" ] && [ "${LOOPTYPE}" != "sgimips" ]
 436         then
 437                 bootstrapCD
 438         fi
 439
 440         if [ "${REAL_ROOT}" = '' ]
 441         then
 442                 echo -n -e "${WARN}>>${NORMAL}${BOLD} No bootable medium found. Waiting for new devices"
 443
 444                 COUNTER=0
 445                 while [ ${COUNTER} -lt 3 ]; do
 446                         sleep 3
 447                         echo -n '.'
 448                         let COUNTER=${COUNTER}+1
 449                 done
 450
 451                 sleep 1
 452                 echo -e "${NORMAL}"
 453                 bootstrapCD
 454         fi
 455
 456         if [ "${REAL_ROOT}" = '' ]
 457         then
 458                 # Undo stuff
 459                 umount  "${NEW_ROOT}/dev" 2>/dev/null
 460                 umount  "${NEW_ROOT}/sys" 2>/dev/null
 461                 umount /sys 2>/dev/null
 462
 463                 umount  "${NEW_ROOT}"
 464                 rm -rf  "${NEW_ROOT}/*"
 465
 466                 bad_msg 'Could not find CD to boot, something else needed!'
 467                 CDROOT=0
 468         fi
 469 fi
 470
 471 # Determine root device
 472 good_msg 'Determining root device...'
 473 while true
 474 do
 475         while [ "${got_good_root}" != '1' ]
 476         do
 477                 case "${REAL_ROOT}" in
 478                         LABEL=*|UUID=*)
 479
 480                                 ROOT_DEV=""
 481                                 retval=1
 482
 483                                 if [ ${retval} -ne 0 ]; then
 484                                         ROOT_DEV=$(findfs "${REAL_ROOT}" 2>/dev/null)
 485                                         retval=$?
 486                                 fi
 487
 488                                 if [ ${retval} -ne 0 ]; then
 489                                         ROOT_DEV=$(busybox findfs "${REAL_ROOT}" 2>/dev/null)
 490                                         retval=$?
 491                                 fi
 492
 493                                 if [ ${retval} -ne 0 ]; then
 494                                         ROOT_DEV=$(blkid -o device -l -t "${REAL_ROOT}")
 495                                         retval=$?
 496                                 fi
 497
 498                                 if [ ${retval} -eq 0 ] && [ -n "${ROOT_DEV}" ]; then
 499                                         good_msg "Detected real_root=${ROOT_DEV}"
 500                                         REAL_ROOT="${ROOT_DEV}"
 501                                 else
 502                                         prompt_user "REAL_ROOT" "root block device"
 503                                         got_good_root=0
 504                                         continue
 505                                 fi
 506                                 ;;
 507                         ZFS*)
 508                                 if [ "${USE_ZFS}" = '0' ]; then
 509                                         prompt_user "REAL_ROOT" "root block device"
 510                                         continue
 511                                 fi
 512
 513                                 ROOT_DEV="${REAL_ROOT#*=}"
 514                                 if [ "${ROOT_DEV}" != 'ZFS' ]
 515                                 then
 516                                         if [ "$(zfs get type -o value -H ${ROOT_DEV})" = 'filesystem' ]
 517                                         then
 518                                                 got_good_root=1;
 519                                                 REAL_ROOT=${ROOT_DEV}
 520                                                 ROOTFSTYPE=zfs
 521                                         else
 522                                                 bad_msg "${ROOT_DEV} is not a filesystem"
 523                                                 prompt_user "REAL_ROOT" "root block device"
 524                                                 got_good_root=0
 525                                                 continue
 526                                         fi
 527                                 else
 528                                         BOOTFS=$(/sbin/zpool list -H -o bootfs)
 529                                         if [ "${BOOTFS}" != '-' ]
 530                                         then
 531
 532                                                 for i in ${BOOTFS}
 533                                                 do
 534
 535                                                         zfs get type ${i} > /dev/null
 536                                                         retval=$?
 537
 538                                                         if [ ${retval} -eq 0 ]; then
 539                                                                 got_good_root=1
 540                                                                 REAL_ROOT=${i}
 541                                                                 ROOTFSTYPE=zfs
 542                                                                 break
 543                                                         fi
 544
 545                                                 done;
 546
 547                                         else
 548                                                 got_good_root=0
 549                                         fi
 550
 551                                 fi
 552
 553                                 if [ ${got_good_root} -ne 1 ]; then
 554                                         prompt_user "REAL_ROOT" "root block device"
 555                                         got_good_root=0
 556                                 fi
 557
 558                                 continue
 559                                 ;;
 560                 esac
 561
 562                 if [ "${REAL_ROOT}" = '' ]
 563                 then
 564                         # No REAL_ROOT determined/specified. Prompt user for root block device.
 565                         prompt_user "REAL_ROOT" "root block device"
 566                         got_good_root=0
 567
 568                 # Check for a block device or /dev/nfs
 569                 elif [ -b "${REAL_ROOT}" ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 570                 then
 571                         got_good_root=1
 572
 573                 else
 574                         bad_msg "Block device ${REAL_ROOT} is not a valid root device..."
 575                         REAL_ROOT=""
 576                         got_good_root=0
 577                 fi
 578         done
 579
 580
 581         if [ "${CDROOT}" = 1 -a "${got_good_root}" = '1' -a "${REAL_ROOT}" != "/dev/nfs" ]
 582         then
 583                 # CD already mounted; no further checks necessary
 584                 break
 585         elif [ "${LOOPTYPE}" = "sgimips" ]
 586         then
 587                 # sgimips mounts the livecd root partition directly
 588                 # there is no isofs filesystem to worry about
 589                 break
 590         else
 591                 good_msg "Mounting $REAL_ROOT as root..."
 592
 593                 if [ "${ROOTFSTYPE}" = 'zfs' ]
 594                 then
 595                         if [ "zfs get -H -o value mountpoint ${REAL_ROOT}" = 'legacy' ]
 596                         then
 597                                 MOUNT_STATE=rw
 598                         else
 599                                 MOUNT_STATE=rw,zfsutil
 600                         fi
 601                 else
 602                         MOUNT_STATE=ro
 603                 fi
 604
 605                 # Try to mount the device as ${NEW_ROOT}
 606                 if [ "${REAL_ROOT}" = '/dev/nfs' ]; then
 607                         findnfsmount
 608                 else
 609                         # If $REAL_ROOT is a symlink
 610                         # Resolve it like util-linux mount does
 611                         [ -L ${REAL_ROOT} ] && REAL_ROOT=`readlink ${REAL_ROOT}`
 612                         # mount ro so fsck doesn't barf later
 613                         if [ "${REAL_ROOTFLAGS}" = '' ]; then
 614                                 good_msg "Using mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE}"
 615                                 mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE} ${REAL_ROOT} ${NEW_ROOT}
 616                         else
 617                                 good_msg "Using mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE},${REAL_ROOTFLAGS}"
 618                                 mount -t ${ROOTFSTYPE} -o ${MOUNT_STATE},${REAL_ROOTFLAGS} ${REAL_ROOT} ${NEW_ROOT}
 619                         fi
 620                 fi
 621
 622                 # If mount is successful break out of the loop
 623                 # else not a good root and start over.
 624                 if [ "$?" = '0' ]
 625                 then
 626                         if [ -d ${NEW_ROOT}/dev -a -x ${NEW_ROOT}/sbin/init ] || [ "${REAL_ROOT}" = "/dev/nfs" ]
 627                         then
 628                                 break
 629                         else
 630                                 bad_msg "The filesystem mounted at ${REAL_ROOT} does not appear to be a valid /, try again"
 631                                 got_good_root=0
 632                                 REAL_ROOT=''
 633                         fi
 634                 else
 635                         bad_msg "Could not mount specified ROOT, try again"
 636                         got_good_root=0
 637                         REAL_ROOT=''
 638                 fi
 639         fi
 640 done
 641 # End determine root device
 642
 643 #verbose_kmsg
 644
 645 # If CD root is set determine the looptype to boot
 646 if [ "${CDROOT}" = '1' ]
 647 then
 648         good_msg 'Determining looptype ...'
 649         cd "${NEW_ROOT}"
 650
 651         # Find loop and looptype
 652         [ -z "${LOOP}" ] && find_loop
 653         [ -z "${LOOPTYPE}" ] && find_looptype
 654
 655         cache_cd_contents
 656
 657         # If encrypted, find key and mount, otherwise mount as usual
 658         if [ -n "${CRYPT_ROOT}" ]
 659         then
 660                 CRYPT_ROOT_KEY="$(head -n 1 "${CDROOT_PATH}"/livecd)"
 661                 CRYPT_ROOT='/dev/loop0'
 662                 good_msg 'You booted an encrypted livecd' "${CRYPT_SILENT}"
 663
 664                 losetup /dev/loop0 "${CDROOT_PATH}/${LOOPEXT}${LOOP}"
 665                 test_success 'Preparing loop filesystem'
 666
 667                 startLUKS
 668
 669                 case ${LOOPTYPE} in
 670                         normal)
 671                                 MOUNTTYPE="ext2"
 672                                 ;;
 673                         *)
 674                                 MOUNTTYPE="${LOOPTYPE}"
 675                                 ;;
 676                 esac
 677                 mount -t "${MOUNTTYPE}" -o ro /dev/mapper/root "${NEW_ROOT}/mnt/livecd"
 678                 test_success 'Mount filesystem'
 679                 FS_LOCATION='mnt/livecd'
 680         # Setup the loopback mounts, if unencrypted
 681         else
 682                 if [ "${LOOPTYPE}" = 'normal' ]
 683                 then
 684                         good_msg 'Mounting loop filesystem'
 685                         mount -t ext2 -o loop,ro "${CDROOT_PATH}/${LOOPEXT}${LOOP}" "${NEW_ROOT}/mnt/livecd"
 686                         test_success 'Mount filesystem'
 687                         FS_LOCATION='mnt/livecd'
 688                 elif [ "${LOOPTYPE}" = 'squashfs' ]
 689                 then
 690                         if [ "${USE_AUFS_NORMAL}" != '1' ]; then
 691                                 good_msg 'Mounting squashfs filesystem'
 692                                 _CACHED_SQUASHFS_PATH="${NEW_ROOT}/mnt/${LOOP}"
 693                                 _squashfs_path="${CDROOT_PATH}/${LOOPEXT}${LOOP}"  # Default to uncached
 694                                 # Upgrade to cached version if possible
 695                                 [ "${DO_cache}" -a -f "${_CACHED_SQUASHFS_PATH}" ] \
 696                                                 && _squashfs_path=${_CACHED_SQUASHFS_PATH}
 697                                 mount -t squashfs -o loop,ro "${_squashfs_path}" "${NEW_ROOT}/mnt/livecd" || {
 698                                         bad_msg "Squashfs filesystem could not be mounted, dropping into shell."
 699                                         if [ -e /proc/filesystems ]; then
 700                                                 fgrep -q squashfs /proc/filesystems || \
 701                                                         bad_msg "HINT: Your kernel does not know filesystem \"squashfs\"."
 702                                         fi
 703                                         do_rundebugshell
 704                                 }
 705                         else
 706                                 good_msg 'Mounting squashfs & aufs filesystems'
 707                                 setup_squashfs_aufs
 708                                 test_success 'Mount filesystem'
 709                         fi
 710                         FS_LOCATION='mnt/livecd'
 711                 elif [ "${LOOPTYPE}" = 'gcloop' ]
 712                 then
 713                         good_msg 'Mounting gcloop filesystem'
 714                         echo ' ' | losetup -E 19 -e ucl-0 -p0 "${NEW_ROOT}/dev/loop0" "${CDROOT_PATH}/${LOOPEXT}${LOOP}"
 715                         test_success 'losetup the loop device'
 716
 717                         mount -t ext2 -o ro "${NEW_ROOT}/dev/loop0" "${NEW_ROOT}/mnt/livecd"
 718                         test_success 'Mount the losetup loop device'
 719                         FS_LOCATION='mnt/livecd'
 720                 elif [ "${LOOPTYPE}" = 'zisofs' ]
 721                 then
 722                         FS_LOCATION="${CDROOT_PATH/\/}/${LOOPEXT}${LOOP}"
 723                 elif [ "${LOOPTYPE}" = 'noloop' ]
 724                 then
 725                         FS_LOCATION="${CDROOT_PATH/\/}"
 726                 elif [ "${LOOPTYPE}" = 'sgimips' ]
 727                 then
 728                         # getdvhoff finds the starting offset (in bytes) of the squashfs
 729                         # partition on the cdrom and returns this offset for losetup
 730                         #
 731                         # All currently supported SGI Systems use SCSI CD-ROMs, so
 732                         # so we know that the CD-ROM is usually going to be /dev/sr0.
 733                         #
 734                         # We use the value given to losetup to set /dev/loop0 to point
 735                         # to the liveCD root partition, and then mount /dev/loop0 as
 736                         # the LiveCD rootfs
 737                         good_msg 'Locating the SGI LiveCD Root Partition'
 738                         echo ' ' | \
 739                                 losetup -o $(getdvhoff "${NEW_ROOT}${REAL_ROOT}" 0) \
 740                                         "${NEW_ROOT}${CDROOT_DEV}" \
 741                                         "${NEW_ROOT}${REAL_ROOT}"
 742                         test_success 'losetup /dev/sr0 /dev/loop0'
 743
 744                         good_msg 'Mounting the Root Partition'
 745                         mount -t squashfs -o ro "${NEW_ROOT}${CDROOT_DEV}" "${NEW_ROOT}/mnt/livecd"
 746                         test_success 'mount /dev/loop0 /'
 747                         FS_LOCATION='mnt/livecd'
 748                 fi
 749         fi
 750
 751
 752
 753         # Unpacking additional packages from NFS mount
 754         # This is useful for adding kernel modules to /lib
 755         # We do this now, so that additional packages can add whereever they want.
 756         if [ "${REAL_ROOT}" = '/dev/nfs' ]
 757         then
 758                 if [ -e "${CDROOT_PATH}/add" ]
 759                 then
 760                                 for targz in $(ls ${CDROOT_PATH}/add/*.tar.gz)
 761                                 do
 762                                         tarname=$(basename ${targz})
 763                                         good_msg "Adding additional package ${tarname}"
 764                                         (cd ${NEW_ROOT} ; /bin/tar -xzf ${targz})
 765                                 done
 766                 fi
 767         fi
 768
 769
 770         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 771         then
 772                 setup_unionfs ${NEW_ROOT} /${FS_LOCATION}
 773                 CHROOT=/union
 774         elif [ "${USE_AUFS_NORMAL}" != '1' ]; then
 775
 776         good_msg "Copying read-write image contents to tmpfs"
 777         # Copy over stuff that should be writable
 778         (cd "${NEW_ROOT}/${FS_LOCATION}"; cp -a ${ROOT_TREES} "${NEW_ROOT}") || {
 779                 bad_msg "Copying failed, dropping into a shell."
 780                 do_rundebugshell
 781         }
 782
 783         # Now we do the links.
 784         for x in ${ROOT_LINKS}
 785         do
 786                 if [ -L "${NEW_ROOT}/${FS_LOCATION}/${x}" ]
 787                 then
 788                         ln -s "$(readlink ${NEW_ROOT}/${FS_LOCATION}/${x})" "${x}" 2>/dev/null
 789                 else
 790                         # List all subdirectories of x
 791                         find "${NEW_ROOT}/${FS_LOCATION}/${x}" -type d 2>/dev/null | while read directory
 792                         do
 793                                 # Strip the prefix of the FS_LOCATION
 794                                 directory="${directory#${NEW_ROOT}/${FS_LOCATION}/}"
 795
 796                                 # Skip this directory if we already linked a parent directory
 797                                 if [ "${current_parent}" != '' ]; then
 798                                         var=$(echo "${directory}" | grep "^${current_parent}")
 799                                         if [ "${var}" != '' ]; then
 800                                                 continue
 801                                         fi
 802                                 fi
 803                                 # Test if the directory exists already
 804                                 if [ -e "/${NEW_ROOT}/${directory}" ]
 805                                 then
 806                                         # It does exist, link all the individual files
 807                                         for file in $(ls /${NEW_ROOT}/${FS_LOCATION}/${directory})
 808                                         do
 809                                         if [ ! -d "/${NEW_ROOT}/${FS_LOCATION}/${directory}/${file}" ] && [ ! -e "${NEW_ROOT}/${directory}/${file}" ]; then
 810                                                         ln -s "/${FS_LOCATION}/${directory}/${file}" "${directory}/${file}" 2> /dev/null
 811                                                 fi
 812                                         done
 813                                 else
 814                                         # It does not exist, make a link to the livecd
 815                                         ln -s "/${FS_LOCATION}/${directory}" "${directory}" 2>/dev/null
 816                                         current_parent="${directory}"
 817                                 fi
 818                         done
 819                 fi
 820         done
 821
 822         mkdir initramfs proc tmp sys run 2>/dev/null
 823         chmod 1777 tmp
 824
 825         # have handy /mnt/cdrom (CDROOT_PATH) as well
 826         _new_cdroot="${NEW_ROOT}${CDROOT_PATH}"
 827         [ ! -d "${_new_cdroot}" ] && mkdir -p "${_new_cdroot}"
 828         mount --bind "${CDROOT_PATH}" "${_new_cdroot}"
 829
 830         fi
 831
 832         #UML=$(cat /proc/cpuinfo|grep UML|sed -e 's|model name.*: ||')
 833         #if [ "${UML}" = 'UML' ]
 834         #then
 835         #       # UML Fixes
 836         #       good_msg 'Updating for uml system'
 837         #fi
 838
 839         # Let Init scripts know that we booted from CD
 840         export CDBOOT
 841         CDBOOT=1
 842 else
 843         if [ "${USE_UNIONFS_NORMAL}" = '1' ]
 844         then
 845                 mkdir /union_changes
 846                 mount -t tmpfs tmpfs /union_changes
 847                 setup_unionfs /union_changes ${NEW_ROOT}
 848                 mkdir -p ${UNION}/tmp/.initrd
 849         fi
 850 fi
 851
 852 # Mount the additional things as required by udev & systemd
 853 if [ -f ${NEW_ROOT}/etc/initramfs.mounts ]; then
 854         fslist=$(get_mounts_list)
 855 else
 856         fslist="/usr"
 857 fi
 858
 859 for fs in $fslist; do
 860         dev=$(get_mount_device $fs)
 861         [ -z "${dev}" ] && continue
 862         # Resolve it like util-linux mount does
 863         [ -L ${dev} ] && dev=`readlink ${dev}`
 864         # In this case, it's probably part of the filesystem
 865         # and not a mountpoint
 866         [ -z "$dev" ] && continue
 867         fstype=$(get_mount_fstype $fs)
 868         if get_mount_options $fs | fgrep -q bind ; then
 869                 opts='bind'
 870                 dev=${NEW_ROOT}${dev}
 871         else
 872                 # ro must be trailing, and the options will always contain at least 'defaults'
 873                 opts="$(get_mount_options $fs | strip_mount_options),ro"
 874         fi
 875         mnt=${NEW_ROOT}${fs}
 876         cmd="mount -t $fstype -o $opts $dev $mnt"
 877         good_msg "Mounting $dev as ${fs}: $cmd"
 878         if ! $cmd; then
 879                 bad_msg "Unable to mount $dev for $fs"
 880         fi
 881 done
 882
 883 # Execute script on the cdrom just before boot to update things if necessary
 884 cdupdate
 885
 886 if [ "${SUBDIR}" != '' -a -e "${CHROOT}/${SUBDIR}" ]
 887 then
 888         good_msg "Entering ${SUBDIR} to boot"
 889         CHROOT="${CHROOT}/${SUBDIR}"
 890 fi
 891
 892 verbose_kmsg
 893
 894 echo -ne "${GOOD}>>${NORMAL}${BOLD} Booting (initramfs)${NORMAL}"
 895
 896 cd "${CHROOT}"
 897 mkdir "${CHROOT}/proc" "${CHROOT}/sys" "${CHROOT}/run" 2>/dev/null
 898 echo -ne "${BOLD}.${NORMAL}"
 899
 900 # If devtmpfs is mounted, try move it to the new root
 901 # If that fails, try to unmount all possible mounts of devtmpfs as stuff breaks otherwise
 902 for fs in /dev /sys /proc
 903 do
 904         if grep -qs "$fs" /proc/mounts
 905         then
 906                 if ! mount --move $fs "${CHROOT}"$fs
 907                 then
 908                         umount $fs || echo '*: Failed to move and unmount the ramdisk $fs!'
 909                 fi
 910         fi
 911 done
 912
 913 if [ ! -e "${CHROOT}/dev/console" ] || [ ! -e "${CHROOT}/dev/null" ]
 914 then
 915         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing files required to boot (console and null)${NORMAL}"
 916 elif [ -e /etc/initrd.splash -a ! -e "${CHROOT}/dev/tty1" ]
 917 then
 918         echo -ne "${BAD}>>${NORMAL}${BOLD} ERROR: your real /dev is missing tty1, which is required for splash${NORMAL}"
 919 fi
 920
 921 echo -e "${BOLD}.${NORMAL}"
 922
 923 exec /sbin/switch_root -c "/dev/console" "${CHROOT}" "${REAL_INIT:-/sbin/init}" "${INIT_OPTS}"
 924
 925 # If we get here, something bad has happened
 926 splash 'verbose'
 927
 928 echo "A fatal error has probably occured since ${REAL_INIT:-/sbin/init} did not"
 929 echo "boot correctly. Trying to open a shell..."
 930 echo
 931 exec /bin/bash
 932 exec /bin/sh
 933 exec /bin/ash
 934 exec /bin/dash
 935 exec sh