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