-# live-initramfs helper functions, used by live-initramfs on boot and by live-snapshot
+# live-boot helper functions, used by live-boot on boot and by live-snapshot
if [ ! -x "/bin/fstype" ]
then
sysblock=${1}
r=""
- for dev in "${sysblock}" "${sysblock}"/*
+ for dev in "${sysblock}"/* "${sysblock}"
do
if [ -e "${dev}/dev" ]
then
echo ${r}
}
+storage_devices()
+{
+ black_listed_devices="${1}"
+ white_listed_devices="${2}"
+
+ for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "loop|ram|fd")
+ do
+ fulldevname=$(sys2dev "${sysblock}")
+
+ if echo "${black_listed_devices}" | grep -qe "\<${fulldevname}\>" || \
+ [ -n "${white_listed_devices}" ] && \
+ echo "${white_listed_devices}" | grep -qve "\<${fulldevname}\>"
+ then
+ # skip this device entirely
+ continue
+ fi
+
+ for dev in $(subdevices "${sysblock}")
+ do
+ devname=$(sys2dev "${dev}")
+
+ if echo "${black_listed_devices}" | grep -qe "\<${devname}\>"
+ then
+ # skip this subdevice
+ continue
+ else
+ echo "${devname}"
+ fi
+ done
+ done
+}
+
is_supported_fs ()
{
fstype="${1}"
get_fstype ()
{
- # udev >=146-1 no longer provides vol_id:
- if [ -x /lib/udev/vol_id ]
- then
- /lib/udev/vol_id -t ${1} 2>/dev/null
- else
- eval $(blkid -o udev "${1}")
- if [ -n "$ID_FS_TYPE" ]
- then
- echo "${ID_FS_TYPE}"
- fi
- fi
+ /sbin/blkid -s TYPE -o value $1 2>/dev/null
}
where_is_mounted ()
local encryption=${5}
local readonly=${6}
- modprobe -q -b "${module}"
+ # the output of setup_loop is evaluated in other functions,
+ # modprobe leaks kernel options like "libata.dma=0"
+ # as "options libata dma=0" on stdout, causing serious
+ # problems therefor, so instead always avoid output to stdout
+ modprobe -q -b "${module}" 1>/dev/null
- if [ -x /sbin/udevadm ]
- then
- # lenny
- udevadm settle
- else
- # etch
- udevsettle
- fi
+ udevadm settle
for loopdev in ${pattern}
do
fi
fi
- if [ 0 -lt "${offset}" ]
+ if [ -n "${offset}" ] && [ 0 -lt "${offset}" ]
then
options="${options} -o ${offset}"
fi
then
fstype=$(get_fstype "${dev}")
fi
- mount -t "${fstype}" -o "${opts}" "${dev}" "${mountp}" || panic "Cannot mount ${dev} on ${mountp}, fstype=${fstype}, options=${opts}"
+ mount -t "${fstype}" -o "${opts}" "${dev}" "${mountp}" || \
+ ( echo "SKIPPING: Cannot mount ${dev} on ${mountp}, fstype=${fstype}, options=${opts}" > live-boot.log && return 0 )
fi
}
-find_cow_device ()
+open_luks_device ()
{
- # Returns a device containing a partition labeled "${pers_label}" or containing a file named the same way
- # in the latter case the partition containing the file is left mounted
- # if is not in black_listed_devices
- pers_label="${1}"
- cow_backing="/${pers_label}-backing"
- black_listed_devices="${2}"
-
- if [ -z "${PERSISTENT_PATH}" ]
+ dev="${1}"
+ name="$(basename ${dev})"
+ opts="--key-file=-"
+ if [ -n "${PERSISTENT_READONLY}" ]
then
- pers_fpath=${cow_backing}/${pers_label}
- else
- pers_fpath=${cow_backing}/${PERSISTENT_PATH}/${pers_label}
+ opts="${opts} --readonly"
fi
- for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop | grep -v ram | grep -v fd)
- do
- for dev in $(subdevices "${sysblock}")
- do
- devname=$(sys2dev "${dev}")
-
- if echo "${black_listed_devices}" | grep -q "${devname}"
- then
- # skip this device enterely
- break
- fi
+ load_keymap
- # Checking for a luks device
- if [ "${PERSISTENT}" = "cryptsetup" ] && [ -e /sbin/cryptsetup ] && /sbin/cryptsetup isLuks ${devname}
- then
- while true
- do
- load_keymap
-
- /lib/cryptsetup/askpass "Enter passphrase for ${pers_label} on ${devname}: " | /sbin/cryptsetup -T 1 luksOpen ${devname} $(basename ${devname}) --key-file=-
- error=${?}
-
- devname="/dev/mapper/$(basename ${devname})"
-
- if [ 0 -eq ${error} ]
- then
- unset error
- break
- fi
-
- echo
- echo -n "There was an error decrypting ${devname} ... Retry? [Y/n] " >&6
- read answer
-
- if [ "$(echo "${answer}" | cut -b1 | tr A-Z a-z)" = "n" ]
- then
- unset answer
- break
- fi
- done
- fi
-
- # udev >=146-1 no longer provides vol_id:
- if [ -x /lib/udev/vol_id ]
- then
- if [ "$(/lib/udev/vol_id -l ${devname} 2>/dev/null)" = "${pers_label}" ]
- then
- echo "${devname}"
- return 0
- fi
- else
- eval $(blkid -o udev "${devname}")
- if [ "$ID_FS_LABEL" = "${pers_label}" ]
- then
- echo "${devname}"
- return 0
- fi
- fi
+ while true
+ do
+ /lib/cryptsetup/askpass "Enter passphrase for ${dev}: " | \
+ /sbin/cryptsetup -T 1 luksOpen ${dev} ${name} ${opts}
- if [ "${PERSISTENT}" = "nofiles" ]
- then
- # do not mount the device to find for image files
- # just skip this
- continue
- fi
+ if [ 0 -eq ${?} ]
+ then
+ luks_device="/dev/mapper/${name}"
+ echo ${luks_device}
+ return 0
+ fi
- case "$(get_fstype ${devname})" in
- vfat|ext2|ext3|ext4|jffs2)
- mkdir -p "${cow_backing}"
- if ! try_mount "${devname}" "${cow_backing}" "rw"
- then
- break
- fi
+ echo >&6
+ echo -n "There was an error decrypting ${dev} ... Retry? [Y/n] " >&6
+ read answer
- if [ -f "${pers_fpath}" ]
- then
- echo $(setup_loop "${pers_fpath}" "loop" "/sys/block/loop*")
- return 0
- else
- umount ${cow_backing}
- fi
- ;;
- *)
- ;;
- esac
- done
+ if [ "$(echo "${answer}" | cut -b1 | tr A-Z a-z)" = "n" ]
+ then
+ return 2
+ fi
done
- return 1
}
-find_files ()
+find_persistent_media ()
{
- # return the a string composed by device name, mountpoint an the first of ${filenames} found on a supported partition
- # FIXME: merge with above function
-
- filenames="${1}"
- snap_backing="/snap-backing"
- black_listed_devices="${2}"
-
- for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -v loop | grep -v ram | grep -v fd)
+ # Scans devices for overlays and snapshots, and returns a whitespace
+ # separated list of how to use them. Only overlays with a partition
+ # label or file name in ${overlays} are returned, and ditto for
+ # snapshots with labels in ${snapshots}.
+ #
+ # When scanning a LUKS device, the user will be asked to enter the
+ # passphrase; on failure to enter it, or if no persistent partitions
+ # or files were found, the LUKS device is closed.
+ #
+ # For a snapshot file the return value is ${label}=${snapdata}", where
+ # ${snapdata} is the parameter used for try_snap().
+ #
+ # For all other cases (overlay/snapshot partition and overlay file) the
+ # return value is "${label}=${device}", where ${device} a device that
+ # can mount the content. In the case of an overlay file, the device
+ # containing the file will remain mounted as a side-effect.
+ #
+ # No devices in ${black_listed_devices} will be scanned, and if
+ # ${white_list_devices} is non-empty, only devices in it will be
+ # scanned.
+
+ overlays="${1}"
+ snapshots="${2}"
+ black_listed_devices="${3}"
+ white_listed_devices="${4}"
+
+ for dev in $(storage_devices "${black_listed_devices}" "${white_listed_devices}")
do
- for dev in $(subdevices "${sysblock}")
- do
- devname=$(sys2dev "${dev}")
- devfstype="$(get_fstype ${devname})"
+ luks_device=""
- if echo "${black_listed_devices}" | grep -q "${devname}"
+ # Checking for a luks device
+ if echo ${PERSISTENT_ENCRYPTION} | grep -qe "\<luks\>" && \
+ /sbin/cryptsetup isLuks ${dev}
+ then
+ if luks_device=$(open_luks_device "${dev}")
then
- # skip this device enterely
- break
+ dev="${luks_device}"
+ else
+ # skip $dev since we failed/chose not to open it
+ continue
fi
+ elif echo ${PERSISTENT_ENCRYPTION} | grep -qve "\<none\>"
+ then
+ # skip $dev since we don't allow unencrypted storage
+ continue
+ fi
- if is_supported_fs ${devfstype}
+ if echo ${PERSISTENT_STORAGE} | grep -qe "\<filesystem\>"
+ then
+ for label in ${overlays} ${snapshots}
+ do
+ if [ "$(/sbin/blkid -s LABEL -o value $dev 2>/dev/null)" = "${label}" ]
+ then
+ echo "${label}=${dev}"
+ # skip to the next device
+ continue 2
+ fi
+ done
+ fi
+
+ if echo ${PERSISTENT_STORAGE} | grep -qe "\<file\>"
+ then
+ devfstype="$(get_fstype ${dev})"
+ overlay_on_dev=""
+ snapshot_on_dev=""
+ backing="/$(basename ${dev})-backing"
+ mkdir -p "${backing}"
+ if is_supported_fs ${devfstype} && try_mount "${dev}" "${backing}" "rw" "${devfstype}"
then
- mkdir -p "${snap_backing}"
+ for label in ${overlays}
+ do
+ path=${backing}/${PERSISTENT_PATH}${label}
+ if [ -f "${path}" ]
+ then
+ overlay_on_dev="yes"
+ echo "${label}=$(setup_loop "${path}" "loop" "/sys/block/loop*")"
+ fi
+ done
- if try_mount "${devname}" "${snap_backing}" "ro" "${devfstype}"
- then
- for filename in ${filenames}
+ for label in ${snapshots}
+ do
+ for ext in squashfs cpio.gz ext2 ext3 ext4 jffs2
do
- if [ -f "${snap_backing}/${filename}" ]
+ path="${PERSISTENT_PATH}${label}.${ext}"
+ if [ -f "${backing}/${path}" ]
then
- echo "${devname} ${snap_backing} ${filename}"
- umount ${snap_backing}
- return 0
+ snapshot_on_dev="yes"
+ echo "${label}=${dev}:${backing}:${path}"
fi
done
+ done
+ fi
+ if [ -z "${overlay_on_dev}" ]
+ then
+ umount ${backing} > /dev/null 2>&1 || true
+ if [ -z "${snapshot_on_dev}" ] && [ -n "${luks_device}" ] && /sbin/cryptsetup status "${luks_device}" 1> /dev/null
+ then
+ /sbin/cryptsetup luksClose "${luks_device}"
fi
-
- umount ${snap_backing}
fi
- done
+ fi
done
}
fi
}
+
+removable_dev ()
+{
+ output_format="${1}"
+ want_usb="${2}"
+ ret=
+
+ for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
+ do
+ dev_ok=
+ if [ "$(cat ${sysblock}/removable)" = "1" ]
+ then
+ if [ -z "${want_usb}" ]
+ then
+ dev_ok="yes"
+ else
+ if readlink ${sysblock} | grep -q usb
+ then
+ dev_ok="yes"
+ fi
+ fi
+ fi
+
+ if [ "${dev_ok}" = "yes" ]
+ then
+ case "${output_format}" in
+ sys)
+ ret="${ret} ${sysblock}"
+ ;;
+ *)
+ devname=$(sys2dev "${sysblock}")
+ ret="${ret} ${devname}"
+ ;;
+ esac
+ fi
+ done
+
+ echo "${ret}"
+}
+
+removable_usb_dev ()
+{
+ output_format="${1}"
+
+ removable_dev "${output_format}" "want_usb"
+}
+
+non_removable_dev ()
+{
+ output_format="${1}"
+ ret=
+
+ for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
+ do
+ if [ "$(cat ${sysblock}/removable)" = "0" ]
+ then
+ case "${output_format}" in
+ sys)
+ ret="${ret} ${sysblock}"
+ ;;
+ *)
+ devname=$(sys2dev "${sysblock}")
+ ret="${ret} ${devname}"
+ ;;
+ esac
+ fi
+ done
+
+ echo "${ret}"
+}
+
+link_files ()
+{
+ # create source's directory structure in dest, and recursively
+ # create symlinks in dest to to all files in source. if mask
+ # is non-empty, remove mask from all source paths when
+ # creating links (will be necessary if we change root, which
+ # live-boot normally does (into $rootmnt)).
+
+ # remove multiple /:s and ensure ending on /
+ local src_dir="$(echo "${1}"/ | sed -e 's|/\+|/|g')"
+ local dest_dir="$(echo "${2}"/ | sed -e 's|/\+|/|g')"
+ local src_mask="${3}"
+
+ # This check can only trigger on the inital, non-recursive call since
+ # we create the destination before recursive calls
+ if [ ! -d "${dest_dir}" ];
+ then
+ log_warning_msg "Must link_files into a directory"
+ return
+ fi
+
+ find "${src_dir}" -mindepth 1 -maxdepth 1 | while read x; do
+ local src="${x}"
+ local dest="${dest_dir}$(basename "${x}")"
+ if [ -d "${src}" ];
+ then
+ if [ -z "$(ls -A "${src}")" ];
+ then
+ continue
+ fi
+ if [ ! -d "${dest}" ];
+ then
+ mkdir -p "${dest}"
+ prev="$(dirname "${dest}")"
+ chown $(stat -c %u:%g "${prev}") "${dest}"
+ chmod $(stat -c %a "${prev}") "${dest}"
+ fi
+ link_files "${src}" "${dest}" "${src_mask}"
+ else
+ if [ -n "${src_mask}" ]
+ then
+ src="$(echo ${src} | sed "s|^${src_mask}||")"
+ fi
+ rm -rf "${dest}" 2> /dev/null
+ ln -s "${src}" "${dest}"
+ fi
+ done
+}
+
+do_union () {
+ local unionmountpoint="${1}" # directory where the union is mounted
+ local unionrw="${2}" # branch where the union changes are stored
+ local unionro1="${3}" # first underlying read-only branch (optional)
+ local unionro2="${4}" # second underlying read-only branch (optional)
+
+ if [ "${UNIONTYPE}" = "aufs" ]
+ then
+ rw_opt="rw"
+ ro_opt="rr+wh"
+ noxino_opt="noxino"
+ elif [ "${UNIONTYPE}" = "unionfs-fuse" ]
+ then
+ rw_opt="RW"
+ ro_opt="RO"
+ else
+ rw_opt="rw"
+ ro_opt="ro"
+ fi
+
+ case "${UNIONTYPE}" in
+ unionfs-fuse)
+ unionmountopts="-o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid"
+ unionmountopts="${unionmountopts} ${unionrw}=${rw_opt}"
+ if [ -n "${unionro1}" ]
+ then
+ unionmountopts="${unionmountopts}:${unionro1}=${ro_opt}"
+ fi
+ if [ -n "${unionro2}" ]
+ then
+ unionmountopts="${unionmountopts}:${unionro2}=${ro_opt}"
+ fi
+ ( sysctl -w fs.file-max=391524 ; ulimit -HSn 16384
+ unionfs-fuse ${unionmountopts} "${unionmountpoint}" ) && \
+ ( mkdir -p /run/sendsigs.omit.d
+ pidof unionfs-fuse >> /run/sendsigs.omit.d/unionfs-fuse || true )
+ ;;
+
+ overlayfs)
+ # XXX: can unionro2 be used? (overlayfs only handles two dirs, but perhaps they can be chained?)
+ # XXX: and can unionro1 be optional? i.e. can overlayfs skip lowerdir?
+ unionmountopts="-o noatime,lowerdir=${unionro1},upperdir=${unionrw}"
+ mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
+ ;;
+
+ *)
+ unionmountopts="-o noatime,${noxino_opt},dirs=${unionrw}=${rw_opt}"
+ if [ -n "${unionro1}" ]
+ then
+ unionmountopts="${unionmountopts}:${unionro1}=${ro_opt}"
+ fi
+ if [ -n "${unionro2}" ]
+ then
+ unionmountopts="${unionmountopts}:${unionro2}=${ro_opt}"
+ fi
+ mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
+ ;;
+ esac
+}
+
+get_custom_mounts () {
+ # Side-effect: leaves $devices with live.persist mounted in ${rootmnt}/live/persistent
+ # Side-effect: prints info to file $custom_mounts
+
+ local devices="${1}"
+ local custom_mounts="${2}" # print result to this file
+ local rootmnt="${3}" # should be set empty post-live-boot
+
+ local bindings="/bindings.list"
+ local links="/links.list"
+ rm -rf ${bindings} ${links} 2> /dev/null
+ local persistent_backing="${rootmnt}/live/persistent"
+
+ for device in ${devices}
+ do
+ if [ ! -b "${device}" ]
+ then
+ continue
+ fi
+ local device_name="$(basename ${device})"
+ local backing="${persistent_backing}/${device_name}"
+ mkdir -p "${backing}"
+ local device_fstype="$(get_fstype ${device})"
+ if [ -z "${PERSISTENT_READONLY}" ]
+ then
+ device_mount_opts="rw,noatime"
+ else
+ device_mount_opts="ro,noatime"
+ fi
+ local device_used=""
+ mount -t "${device_fstype}" -o "${device_mount_opts}" "${device}" "${backing}"
+ local include_list="${backing}/${persistence_list}"
+ if [ ! -r "${include_list}" ]
+ then
+ umount "${backing}"
+ rmdir "${backing}"
+ continue
+ fi
+
+ [ "${DEBUG}" = "Yes" ] && cp ${include_list} ${persistent_backing}/${persistence_list}.${device_name}
+ while read source dest options # < ${include_list}
+ do
+ if echo ${source} | grep -qe "^[[:space:]]*\(#.*\)\?$"
+ then
+ # skipping empty or commented lines
+ continue
+ fi
+
+ if echo ${dest} | grep -qe "^[^/]"
+ then
+ options="${dest}"
+ dest="${source}"
+ elif [ -z "${dest}" ]
+ then
+ dest="${source}"
+ fi
+
+ if echo ${dest} | grep -qe "^/\+$\|^/\+live\(/.*\)\?$"
+ then
+ # mounting on / or /live could cause trouble
+ log_warning_msg "Skipping unsafe custom mount on ${dest}"
+ continue
+ fi
+
+ for opt in $(echo ${options} | tr ',' ' ');
+ do
+ case "${opt}" in
+ linkfiles|union)
+ ;;
+ *)
+ log_warning_msg "Skipping custom mount with unkown option: ${opt}"
+ continue 2
+ ;;
+ esac
+ done
+
+ # FIXME: handle case: we already have /a/b in
+ # $bindings added from current $device, but
+ # now we find /a -- /a should replace /a/b in
+ # $bindings.
+
+ # FIXME: handle case: we have /a in $bindings
+ # from current $device, now we find /a/b, so
+ # we skip /a/b
+
+ # ensure that no multiple-/ occur in paths
+ local full_source="$(echo ${backing}/${source}/ | sed -e 's|/\+|/|g')"
+ local full_dest="$(echo ${rootmnt}/${dest}/ | sed -e 's|/\+|/|g')"
+ device_used="yes"
+ if echo ${options} | grep -qe "\<linkfiles\>";
+ then
+ echo "${full_source} ${full_dest} ${options}" >> ${links}
+ else
+ echo "${full_source} ${full_dest} ${options}" >> ${bindings}
+ fi
+ done < ${include_list}
+
+ if [ -z "${device_used}" ]
+ then
+ # this device was not used for / earlier, or
+ # custom mount point now, so it's useless
+ umount "${backing}"
+ rmdir "${backing}"
+ fi
+ done
+
+ # We sort the list according to destination so we're sure that
+ # we won't hide a previous mount. We also ignore duplicate
+ # destinations in a more or less arbitrary way.
+ [ -e "${bindings}" ] && sort -k2 -sbu ${bindings} >> ${custom_mounts}
+ rm ${bindings}
+
+ # After all mounts are considered we add symlinks so they
+ # won't be hidden by some mount.
+ [ -e "${links}" ] && sort -k2 -sbu ${links} >> ${custom_mounts}
+ rm ${links}
+
+ rm -f ${bindings} ${links} 2> /dev/null
+ echo ${custom_mounts}
+}
+
+do_custom_mounts () {
+ local custom_mounts="${1}" # the ouput from get_custom_mounts()
+ local rootmnt="${2}" # should be set empty post-live-boot
+
+ while read source dest options # < ${custom_mounts}
+ do
+ local opt_linkfiles=""
+ local opt_union=""
+ for opt in $(echo ${options} | tr ',' ' ');
+ do
+ case "${opt}" in
+ linkfiles)
+ opt_linkfiles="yes"
+ ;;
+ union)
+ opt_union="yes"
+ ;;
+ esac
+ done
+
+ if mountpoint -q "${dest}";
+ then
+ log_warning_msg "Skipping custom mount ${source} on ${dest}: destination is already a mount point"
+ continue
+ fi
+
+ # FIXME: we don't handle already existing
+ # non-directory files in the paths of both $source and
+ # $dest.
+
+ if [ ! -d "${dest}" ]
+ then
+ # if ${dest} is in /home/$user, try fixing
+ # proper ownership
+ # FIXME: this should really be handled by
+ # live-config since we don't know for sure
+ # which uid a certain user has until then
+ if echo ${dest} | grep -qe "^${rootmnt}/*home/\+[^/]\+"
+ then
+ path="/"
+ for dir in $(echo ${dest} | sed -e 's|/\+| |g')
+ do
+ path=${path}/${dir}
+ if [ ! -e ${path} ]
+ then
+ mkdir -p ${path}
+ # assume that the intended user is the first, which is usually the case
+ chown 1000:1000 ${path}
+ fi
+ done
+ else
+ mkdir -p ${dest}
+ fi
+ fi
+
+ # if ${source} doesn't exist on our persistent media
+ # we bootstrap it with $dest from the live filesystem.
+ # this both makes sense and is critical if we're
+ # dealing with /etc or other system dir.
+ if [ ! -d "${source}" ]
+ then
+ if [ -n "${PERSISTENT_READONLY}" ] || [ -n "${opt_linkfiles}" ]
+ then
+ continue
+ elif [ -n "${opt_union}" ]
+ then
+ # union's don't need to be bootstrapped
+ mkdir "${source}"
+ else
+ # ensure that $dest is not copied *into* $source
+ mkdir -p "$(dirname ${source})"
+ cp -a "${dest}" "${source}"
+ fi
+ fi
+
+ rofs_dest_backing=""
+ for d in ${rootmnt}/live/rofs/*
+ do
+ if [ -n "${rootmnt}" ]
+ then
+ rofs_dest_backing="${d}/$(echo ${dest} | sed -e "s|${rootmnt}||")"
+ else
+ rofs_dest_backing="${d}/${dest}"
+
+ fi
+ if [ -d "${rofs_dest_backing}" ]
+ then
+ break
+ else
+ rofs_dest_backing=""
+ fi
+ done
+
+ if [ -z "${PERSISTENT_READONLY}" ]
+ then
+ if [ -n "${opt_linkfiles}" ]
+ then
+ links_source="${source}"
+ links_dest="${dest}"
+ elif [ -n "${opt_union}" ]
+ then
+ do_union ${dest} ${source} ${rofs_dest_backing}
+ else
+ mount --bind "${source}" "${dest}"
+ fi
+ else
+ if [ -n "${opt_linkfiles}" ]
+ then
+ links_dest="${dest}"
+ dest="$(mktemp -d ${persistent_backing}/links_source-XXXXXX)"
+ links_source="${dest}"
+ fi
+ if [ -n "${rootmnt}" ]
+ then
+ cow_dir="$(echo ${dest} | sed -e "s|${rootmnt}|/cow/|")"
+ else
+ cow_dir="/live/cow/${dest}"
+ fi
+ mkdir -p ${cow_dir}
+ do_union ${dest} ${cow_dir} ${source} ${rofs_dest_backing}
+ fi
+
+ if [ -n "${opt_linkfiles}" ]
+ then
+ link_files "${links_source}" "${links_dest}" "${rootmnt}"
+ fi
+
+ PERSISTENCE_IS_ON="1"
+ export PERSISTENCE_IS_ON
+ done < ${custom_mounts}
+}
projects / live-boot-grml.git / blobdiff