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