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