scripts/live

   1 #!/bin/sh
   2
   3 # set -e
   4
   5 export PATH=/root/usr/bin:/root/usr/sbin:/root/bin:/root/sbin:/usr/bin:/usr/sbin:/bin:/sbin
   6
   7 echo "/root/lib" >> /etc/ld.so.conf
   8 echo "/root/usr/lib" >> /etc/ld.so.conf
   9
  10 mountpoint=/live_media
  11
  12 root_persistence="live-rw"
  13 home_persistence="home-rw"
  14 root_snapshot_label="live-sn"
  15 home_snapshot_label="home-sn"
  16
  17 USERNAME=user
  18 USERFULLNAME="Live user"
  19 HOSTNAME=host
  20 BUILD_SYSTEM=Custom
  21
  22 mkdir -p $mountpoint
  23
  24 [ -f /etc/live.conf ] && . /etc/live.conf
  25 export USERNAME USERFULLNAME HOSTNAME BUILD_SYSTEM
  26
  27 . /scripts/live-helpers
  28
  29 if [ ! -f /live.vars ]; then
  30     touch /live.vars
  31 fi
  32
  33 parse_cmdline ()
  34 {
  35     PRESEEDS=
  36     # looking for live-initramfs specifics options as kernel parameters
  37     for x in $(cat /proc/cmdline); do
  38         case $x in
  39             userfullname=*)
  40                 export USERFULLNAME=${x#userfullname=}
  41                 export LIVECONF="changed"
  42                 ;;
  43             hostname=*)
  44                 export HOSTNAME=${x#hostname=}
  45                 export LIVECONF="changed"
  46                 ;;
  47             username=*)
  48                 export USERNAME=${x#username=}
  49                 export LIVECONF="changed"
  50                 ;;
  51             netboot*)
  52                 export NETBOOT=${x#netboot=} ;;
  53             access=*)
  54                 export ACCESS=${x#access=} ;;
  55             xdebconf)
  56                 export XDEBCONF="Yes" ;;
  57             xvideomode=*)
  58                 export XVIDEOMODE="${x#xvideomode=}" ;;
  59             toram)
  60                 export TORAM="Yes" ;;
  61             todisk=*)
  62                 export TODISK=${x#todisk=} ;;
  63             noswap)
  64                 export NOSWAP="Yes" ;;
  65             noautologin)
  66                 export NOAUTOLOGIN="Yes" ;;
  67             noxautologin)
  68                 export NOXAUTOLOGIN="Yes" ;;
  69             nosudo)
  70                 export NOSUDO="Yes" ;;
  71             showmounts)
  72                 export SHOWMOUNTS="Yes" ;;
  73             persistent)
  74                 export PERSISTENT="Yes" ;;
  75             nopersistent)
  76                 export PERSISTENT="" ;;
  77             ip*)
  78                 STATICIP=${x#ip=}
  79                 if [ "${STATICIP}" = "" ]; then
  80                     STATICIP="frommedia"
  81                 fi
  82                 export STATICIP ;;
  83             live-getty)
  84                 export LIVE_GETTY=1 ;;
  85             bootfrom=*|live-media=*)
  86                 export LIVE_MEDIA=${x#*=} ;;
  87             live-media-encryption=*|encryption=*)
  88                 export LIVE_MEDIA_ENCRYPTION=${x#*=} ;;
  89             live-media-timeout=*)
  90                 export LIVE_MEDIA_TIMEOUT=${x#live-media-timeout=} ;;
  91             live-media-offset=*)
  92                 export LIVE_MEDIA_OFFSET=${x#live-media-offset=} ;;
  93             locale=*|debian-installer/locale=*)
  94                 export LOCALE=${x#*=} ;;
  95             keyb=*|kbd-chooser/method=*)
  96                 export KBD=${x#*=} ;;
  97             klayout=*|console-setup/layoutcode=*)
  98                 export KLAYOUT=${x#*=} ;;
  99             koptions=*)
 100                 export KOPTIONS=${x#koptions=} ;;
 101             kvariant=*|console-setup/variantcode=*)
 102                 export KVARIANT=${x#*=} ;;
 103             kmodel=*|console-setup/modelcode=*)
 104                 export KMODEL=${x#*=} ;;
 105             module=*)
 106                 export MODULE=${x#module=} ;;
 107             preseed/file=*|file=*)
 108                 export LOCATION="${x#*=}" ;;
 109             upgrade)
 110                 export UPGRADE="Yes" ;;
 111             */*=*)
 112                 question="${x%%=*}"
 113                 value="${x#*=}"
 114                 PRESEEDS="${PRESEEDS}\"${question}=${value}\" "
 115                 ;;
 116             console=*)
 117                 export DEFCONSOLE="${x#*=}" ;;
 118         esac
 119     done
 120
 121     # sort of compatibility with netboot.h from linux docs
 122     if [ -z "${NETBOOT}" ]; then
 123         if [ "${ROOT}" = "/dev/nfs" ]; then
 124             NETBOOT="nfs"
 125             export NETBOOT
 126         elif [ "${ROOT}" = "/dev/cifs" ]; then
 127             NETBOOT="cifs"
 128             export NETBOOT
 129         fi
 130     fi
 131
 132     if [ -z "${MODULE}" ]; then
 133         MODULE=order
 134     fi
 135 }
 136
 137 is_live_path() {
 138     path=$1
 139     if [ -d "$path/live" ]; then
 140         if [ "$(echo $path/live/*.squashfs)" != "$path/live/*.squashfs" ] ||
 141             [ "$(echo $path/live/*.ext2)" != "$path/live/*.ext2" ] ||
 142             [ "$(echo $path/live/*.ext3)" != "$path/live/*.ext3" ] ||
 143             [ "$(echo $path/live/*.dir)" != "$path/live/*.dir" ]; then
 144             return 0
 145         fi
 146     fi
 147     return 1
 148 }
 149
 150 get_backing_device() {
 151     case "$1" in
 152         *.squashfs|*.ext2|*.ext3)
 153             echo $(setup_loop "$1" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}")
 154             ;;
 155         *.dir)
 156             echo "directory"
 157             ;;
 158         *)
 159             panic "Unrecognized live filesystem: $1"
 160             ;;
 161     esac
 162 }
 163
 164 match_files_in_dir() {
 165     # Does any files match pattern $1 ?
 166
 167     local pattern="$1"
 168     if [ "$(echo $pattern)" != "$pattern" ]; then
 169         return 0
 170     fi
 171     return 1
 172 }
 173
 174 mount_images_in_directory() {
 175     directory="$1"
 176     rootmnt="$2"
 177     if match_files_in_dir "$directory/live/*.squashfs" ||
 178         match_files_in_dir "$directory/live/*.ext2" ||
 179         match_files_in_dir "$directory/live/*.ext3" ||
 180         match_files_in_dir "$directory/live/*.dir"; then
 181         setup_unionfs "$directory/live" "$rootmnt"
 182     else
 183         :
 184     fi
 185 }
 186
 187 is_nice_device() {
 188     sysfs_path="${1#/sys}"
 189     if /lib/udev/path_id "${sysfs_path}" | grep -E -q "ID_PATH=(usb|pci-[^-]*-[ide|scsi|usb])"; then
 190         return 0
 191     fi
 192     return 1
 193 }
 194
 195 is_supported_fs () {
 196     # FIXME: do something better like the scan of supported filesystems
 197     fstype="${1}"
 198     case ${fstype} in
 199         vfat|iso9660|udf|ext2|ext3|ntfs)
 200             return 0
 201             ;;
 202     esac
 203     return 1
 204 }
 205
 206 copy_live_to() {
 207     copyfrom="${1}"
 208     copytodev="${2}"
 209     copyto="${copyfrom}_swap"
 210
 211     size=$(fs_size "" ${copyfrom} "used")
 212
 213     if [ "${copytodev}" = "ram" ]; then
 214         # copying to ram:
 215         freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( cat /proc/meminfo | grep Cached | head -n 1 | awk '/Cached/{print $2}' - ) )
 216         mount_options="-o size=${size}k"
 217         free_string="memory"
 218         fstype="tmpfs"
 219         dev="/dev/shm"
 220     else
 221         # it should be a writable block device
 222         if [ -b "${copytodev}" ]; then
 223             dev="${copytodev}"
 224             free_string="space"
 225             fstype=$(get_fstype "${dev}")
 226             freespace=$(fs_size "${dev}")
 227         else
 228             [ "$quiet" != "y" ] && log_warning_msg "${copytodev} is not a block device."
 229             return 1
 230         fi
 231     fi
 232     if [ "${freespace}" -lt "${size}" ] ; then
 233         [ "$quiet" != "y" ] && log_warning_msg "Not enough free ${free_string} (${freespace}k > ${size}k) to copy live media in ${copytodev}."
 234         return 1
 235     fi
 236
 237     # begin copying..
 238     mkdir "${copyto}"
 239     echo "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
 240     mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
 241     cp -a ${copyfrom}/* ${copyto} # "cp -a" from busybox also copies hidden files
 242     umount ${copyfrom}
 243     mount -r --move ${copyto} ${copyfrom}
 244     rmdir ${copyto}
 245     return 0
 246 }
 247
 248 do_netmount() {
 249     rc=1
 250
 251     modprobe "${MP_QUIET}" af_packet # For DHCP
 252
 253     udevtrigger
 254     udevsettle
 255
 256     ipconfig ${DEVICE} /tmp/net-${DEVICE}.conf | tee /netboot.config
 257
 258     if [ "${NFSROOT}" = "auto" ]; then
 259         NFSROOT=${ROOTSERVER}:${ROOTPATH}
 260     fi
 261
 262     [ "$quiet" != "y" ] && log_begin_msg "Trying netboot from ${NFSROOT}"
 263
 264     if [ "${NETBOOT}" != "nfs" ] && do_cifsmount ; then
 265         rc=0
 266     elif do_nfsmount ; then
 267         NETBOOT="nfs"
 268         export NETBOOT
 269         rc=0
 270     fi
 271
 272     [ "$quiet" != "y" ] && log_end_msg
 273     return ${rc}
 274 }
 275
 276 do_nfsmount() {
 277     rc=1
 278     modprobe "${MP_QUIET}" nfs
 279     if [ -z "${NFSOPTS}" ]; then
 280         NFSOPTS=""
 281     fi
 282
 283     [ "$quiet" != "y" ] && log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
 284     # FIXME: This for loop is an ugly HACK round an nfs bug
 285     for i in 0 1 2 3 4 5 6 7 8 9 a b c d e f 10 11 12 13; do
 286         nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
 287         sleep 1
 288     done
 289     return ${rc}
 290 }
 291
 292 do_cifsmount() {
 293     rc=1
 294     if [ -x "/sbin/mount.cifs" ]; then
 295         if [ -z "${NFSOPTS}" ]; then
 296             CIFSOPTS="-ouser=root,password="
 297         else
 298             CIFSOPTS="${NFSOPTS}"
 299         fi
 300
 301         [ "$quiet" != "y" ] && log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
 302         modprobe "${MP_QUIET}" cifs
 303
 304         if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}" ; then
 305             rc=0
 306         fi
 307     fi
 308     return ${rc}
 309 }
 310
 311 do_snap_copy ()
 312 {
 313     fromdev="${1}"
 314     todir="${2}"
 315     snap_type="${3}"
 316
 317     size=$(fs_size "${fromdev}" "" "used")
 318
 319     if [ -b "${fromdev}" ]; then
 320         # look for free mem
 321         if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]; then
 322             todev=$(cat /proc/mounts | grep -s " $(base_path ${todir}) " | awk '{print $1}' )
 323             freespace=$(df -k  | grep -s ${todev} | awk '{print $4}')
 324         else
 325             freespace=$( expr $(awk '/MemFree/{print $2}' /proc/meminfo) + $( cat /proc/meminfo | grep Cached | head -n 1 | awk '/Cached/{print $2}' - ))
 326         fi
 327
 328         tomount="/mnt/tmpsnap"
 329         if [ ! -d "${tomount}" ] ; then
 330             mkdir -p "${tomount}"
 331         fi
 332
 333         fstype=$(get_fstype "${fromdev}")
 334         if [ -n "${fstype}" ]; then
 335             # Copying stuff...
 336             mount -t "${fstype}" -o ro "${fromdev}" "${tomount}"
 337             cp -a "${tomount}"/* ${todir}
 338             umount "${tomount}"
 339         else
 340             log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
 341         fi
 342
 343         rmdir "${tomount}"
 344         if echo ${fromdev} | grep -qs loop; then
 345            losetup -d "${fromdev}"
 346         fi
 347         return 0
 348     else
 349         return 1
 350         [ "$quiet" != "y" ] && log_warning_msg "Unable to find the snapshot ${snap_type} medium"
 351     fi
 352 }
 353
 354 try_snap ()
 355 {
 356     # Look for $snap_label.* in block devices and copy the contents to $snap_mount
 357     #   and remember the device and filename for resync on exit in live-initramfs.init
 358
 359     snap_label="${1}"
 360     snap_mount="${2}"
 361     snap_type="${3}"
 362
 363     snapdata=$(find_files "${snap_label}.squashfs ${snap_label}.cpio.gz ${snap_label}.ext2 ${snap_label}.ext3")
 364     if [ ! -z "${snapdata}" ]; then
 365         snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
 366         snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
 367         snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
 368         if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\)'; then
 369             # squashfs or ext2/ext3 snapshot
 370             dev=$(get_backing_device "${snapback}/${snapfile}")
 371             if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"; then
 372                  log_warning_msg "Impossible to include the ${snapfile} Snapshot"
 373                  return 1
 374             fi
 375         else
 376             # cpio.gz snapshot
 377             if ! (cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | cpio -i -u -d 2>/dev/null) ; then
 378                 log_warning_msg "Impossible to include the ${snapfile} Snapshot"
 379                 return 1
 380             fi
 381         fi
 382         umount "${snapback}"
 383     else
 384         dev=$(find_cow_device "${snap_label}")
 385         if [ -b ${dev} ]; then
 386             if echo "${dev}" | grep -qs loop; then
 387                 # strange things happens, user confused?
 388                 snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
 389                 snapfile=$(basename ${snaploop})
 390                 snapdev=$(cat /proc/mounts | awk '{print $2,$1}' | grep -es "^$( dirname ${snaploop} )" | cut -f2 -d ' ')
 391             else
 392                 snapdev="${dev}"
 393             fi
 394             if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}" ; then
 395                 log_warning_msg "Impossible to include the ${snap_label} Snapshot"
 396                 return 1
 397             else
 398                 if [ -n "${snapfile}" ]; then
 399                      # it was a loop device, user confused
 400                      umount ${snapdev}
 401                 fi
 402             fi
 403         else
 404             log_warning_msg "Impossible to include the ${snap_label} Snapshot"
 405             return 1
 406         fi
 407     fi
 408     echo "export ${snap_type}SNAP="${snap_mount}":${snapdev}:${snapfile}" >> /etc/live.conf # for resync on reboot/halt
 409     return 0
 410 }
 411
 412 setup_unionfs() {
 413     image_directory="$1"
 414     rootmnt="$2"
 415
 416     modprobe "${MP_QUIET}" -b unionfs
 417
 418     # run-init can't deal with images in a subdir, but we're going to
 419     # move all of these away before it runs anyway.  No, we're not,
 420     # put them in / since move-mounting them into / breaks mono and
 421     # some other apps.
 422
 423     croot="/"
 424
 425     # Let's just mount the read-only file systems first
 426     rofsstring=""
 427     rofslist=""
 428     if [ "${NETBOOT}" = "nfs" ] ; then
 429         roopt="nfsro" # go aroung a bug in nfs-unionfs locking
 430     else
 431         roopt="ro"
 432     fi
 433
 434     # Read image names from ${MODULE}.lst if it exists
 435     if [ -e "${image_directory}/${MODULE}.lst" ]; then
 436         for image in $(cat "${image_directory}/${MODULE}.lst"); do
 437             image_string="${image_string} ${image_directory}/${image}";
 438         done
 439     else
 440         # If ${MODULE}.lst does not exist, create a list of images
 441         for image_type in "ext2" "ext3" "squashfs" "dir"; do
 442             for image in "${image_directory}"/*."${image_type}"; do
 443                 if [ -e "${image}" ]; then
 444                     image_string="${image_string} ${image}";
 445                 fi
 446             done
 447         done
 448         # Now sort the list
 449         image_string=$(echo ${image_string} | sed -e 's/ /\n/g' | sort )
 450     fi
 451
 452     mkdir -p "${croot}"
 453     for image in ${image_string}; do
 454         imagename=$(basename "${image}")
 455         if [ -d "${image}" ]; then
 456             # it is a plain directory: do nothing
 457             rofsstring="${image}=${roopt}:${rofsstring}"
 458             rofslist="${image} ${rofslist}"
 459         elif [ -f "${image}" ]; then
 460             backdev=$(get_backing_device "$image")
 461             fstype=$(get_fstype "${backdev}")
 462             if [ "${fstype}" = "unknown" ]; then
 463                 panic "Unknown file system type on ${backdev} (${image})"
 464              fi
 465             mkdir -p "${croot}/${imagename}"
 466             mount -t "${fstype}" -o ro "${backdev}" "${croot}/${imagename}" || panic "Can not mount $backdev ($image) on ${croot}/${imagename}" && rofsstring="${croot}/${imagename}=${roopt}:${rofsstring}" && rofslist="${croot}/${imagename} ${rofslist}"
 467         fi
 468     done
 469     rofsstring=${rofsstring%:}
 470
 471     mkdir -p /cow
 472     cowdevice="tmpfs"
 473     cow_fstype="tmpfs"
 474
 475     # Looking for "${root_persistence}" device or file
 476     if [ -n "${PERSISTENT}" ]; then
 477         cowprobe=$(find_cow_device "${root_persistence}")
 478         if [ -b "${cowprobe}" ]; then
 479             cowdevice=${cowprobe}
 480             cow_fstype=$(get_fstype "${cowprobe}")
 481         else
 482             [ "$quiet" != "y" ] && log_warning_msg "Unable to find the persistent medium"
 483         fi
 484     fi
 485
 486     mount ${cowdevice} -t ${cow_fstype} -o rw /cow || panic "Can not mount $cowdevice on /cow"
 487
 488     mount -t unionfs -o dirs=/cow=rw:$rofsstring unionfs "$rootmnt" || panic "Unionfs mount failed"
 489
 490     # Adding other custom mounts
 491     if [ -n "${PERSISTENT}" ]; then
 492         # directly mount /home
 493         # FIXME: add a custom mounts configurable system
 494         homecow=$(find_cow_device "${home_persistence}" )
 495         if [ -b "${homecow}" ]; then
 496             mount -t $(get_fstype "${homecow}") -o rw "${homecow}" "${rootmnt}/home"
 497             export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
 498         else
 499             [ "$quiet" != "y" ] && log_warning_msg "Unable to find the persistent home medium"
 500         fi
 501         # Look for other snapshots to copy in
 502         try_snap "${root_snapshot_label}" "${rootmnt}" "ROOT"
 503         try_snap "${home_snapshot_label}" "${rootmnt}/home" "HOME"
 504     fi
 505
 506     if [ -n "${SHOWMOUNTS}" ]; then
 507         for d in ${rofslist}; do
 508             mkdir -p "${rootmnt}/live/${d##*/}"
 509             case d in
 510                 *.dir) # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
 511                     ;;
 512                 *) mount --move "${d}" "${rootmnt}/live/${d##*/}"
 513                     ;;
 514             esac
 515         done
 516     fi
 517
 518     # shows cow fs on /cow for use by live-snapshot
 519     mkdir -p "${rootmnt}/cow"
 520     mount -o bind /cow "${rootmnt}/cow"
 521 }
 522
 523 check_dev ()
 524 {
 525     sysdev="${1}"
 526     devname="${2}"
 527     if [ -z "${devname}" ]; then
 528         devname=$(sys2dev "${sysdev}")
 529     fi
 530
 531     if [ -n "${LIVE_MEDIA_OFFSET}" ]; then
 532         loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
 533         devname="${loopdevname}"
 534     fi
 535
 536     fstype=$(get_fstype "${devname}")
 537     if is_supported_fs ${fstype}; then
 538         mount -t ${fstype} -o ro "${devname}" $mountpoint || continue
 539         if is_live_path $mountpoint; then
 540             echo $mountpoint
 541             return 0
 542         else
 543             umount $mountpoint
 544         fi
 545     fi
 546
 547     if [ -n "${LIVE_MEDIA_OFFSET}" ]; then
 548         losetup -d "${loopdevname}"
 549     fi
 550     return 1
 551 }
 552
 553 find_livefs() {
 554     timeout="${1}"
 555     # first look at the one specified in the command line
 556     if [ ! -z "${LIVE_MEDIA}" ]; then
 557         if check_dev "null" "${LIVE_MEDIA}"; then
 558             return 0
 559         fi
 560     fi
 561     # don't start autodetection before timeout has expired
 562     if [ -n "${LIVE_MEDIA_TIMEOUT}" ]; then
 563         if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]; then
 564             return 1
 565         fi
 566     fi
 567     # or do the scan of block devices
 568     for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop | grep -v ram); do
 569         devname=$(sys2dev "${sysblock}")
 570         fstype=$(get_fstype "${devname}")
 571         if /lib/udev/cdrom_id ${devname} > /dev/null; then
 572             if check_dev "null" "${devname}" ; then
 573                 return 0
 574             fi
 575         elif is_nice_device "${sysblock}" ; then
 576             for dev in $(subdevices "${sysblock}"); do
 577                 if check_dev "${dev}" ; then
 578                     return 0
 579                 fi
 580             done
 581         elif [ "${fstype}" = "squashfs" -o \
 582                 "${fstype}" = "ext2" -o \
 583                 "${fstype}" = "ext3" ]; then
 584             # This is an ugly hack situation, the block device has
 585             # an image directly on it.  It's hopefully
 586             # live-initramfs, so take it and run with it.
 587             ln -s "${devname}" "${devname}.${fstype}"
 588             echo "${devname}.${fstype}"
 589             return 0
 590         fi
 591     done
 592     return 1
 593 }
 594
 595 pulsate() {
 596     if [ -x /sbin/usplash_write ]; then
 597         /sbin/usplash_write "PULSATE"
 598     fi
 599 }
 600
 601 set_usplash_timeout() {
 602     if [ -x /sbin/usplash_write ]; then
 603         /sbin/usplash_write "TIMEOUT 120"
 604     fi
 605 }
 606
 607 mountroot() {
 608     exec 6>&1
 609     exec 7>&2
 610     exec > live.log
 611     exec 2>&1
 612
 613     parse_cmdline
 614
 615     set_usplash_timeout
 616     [ "$quiet" != "y" ] && log_begin_msg "Running /scripts/live-premount"
 617     pulsate
 618     run_scripts /scripts/live-premount
 619     [ "$quiet" != "y" ] && log_end_msg
 620
 621     # Needed here too because some things (*cough* udev *cough*)
 622     # changes the timeout
 623
 624     set_usplash_timeout
 625
 626     if [ ! -z "${NETBOOT}" ]; then
 627         if do_netmount ; then
 628             livefs_root="${mountpoint}"
 629         else
 630             panic "Unable to find a live file system on the network"
 631         fi
 632     else
 633         # Scan local devices for the image
 634         for i in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19; do
 635             livefs_root=$(find_livefs $i)
 636             if [ -n "${livefs_root}" ]; then
 637                 break
 638             fi
 639             sleep 1
 640         done
 641     fi
 642
 643     if [ -z "${livefs_root}" ]; then
 644         panic "Unable to find a medium containing a live file system"
 645     fi
 646
 647     if [ "${TORAM}" ]; then
 648         live_dest="ram"
 649     elif [ "${TODISK}" ]; then
 650         live_dest="${TODISK}"
 651     fi
 652     if [ "${live_dest}" ]; then
 653         log_begin_msg "Copying live_media to ${live_dest}"
 654         copy_live_to "${livefs_root}" "${live_dest}"
 655         log_end_msg
 656     fi
 657
 658     mount_images_in_directory "${livefs_root}" "${rootmnt}"
 659
 660     log_end_msg
 661
 662     maybe_break live-bottom
 663     [ "$quiet" != "y" ] && log_begin_msg "Running /scripts/live-bottom"
 664
 665     pulsate
 666     run_scripts /scripts/live-bottom
 667     [ "$quiet" != "y" ] && log_end_msg
 668
 669     exec 1>&6 6>&-
 670     exec 2>&7 7>&-
 671     cp live.log "${rootmnt}/var/log/"
 672 }