scripts/casper

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