#set -e
+is_live_path ()
+{
+ DIRECTORY="${1}"
+
+ if [ -d "${DIRECTORY}"/"${LIVE_MEDIA_PATH}" ]
+ then
+ for FILESYSTEM in squashfs ext2 ext3 ext4 xfs dir jffs2
+ do
+ if [ "$(echo ${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM})" != "${DIRECTORY}/${LIVE_MEDIA_PATH}/*.${FILESYSTEM}" ]
+ then
+ return 0
+ fi
+ done
+ fi
+
+ return 1
+}
+
+matches_uuid ()
+{
+ if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
+ then
+ return 0
+ fi
+
+ path="${1}"
+ uuid="$(cat /conf/uuid.conf)"
+
+ for try_uuid_file in "${path}/.disk/live-uuid"*
+ do
+ [ -e "${try_uuid_file}" ] || continue
+
+ try_uuid="$(cat "${try_uuid_file}")"
+
+ if [ "${uuid}" = "${try_uuid}" ]
+ then
+ return 0
+ fi
+ done
+
+ return 1
+}
+
+get_backing_device ()
+{
+ case "${1}" in
+ *.squashfs|*.ext2|*.ext3|*.ext4|*.jffs2)
+ echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
+ ;;
+
+ *.dir)
+ echo "directory"
+ ;;
+
+ *)
+ panic "Unrecognized live filesystem: ${1}"
+ ;;
+ esac
+}
+
+match_files_in_dir ()
+{
+ # Does any files match pattern ${1} ?
+ local pattern="${1}"
+
+ if [ "$(echo ${pattern})" != "${pattern}" ]
+ then
+ return 0
+ fi
+
+ return 1
+}
+
+mount_images_in_directory ()
+{
+ directory="${1}"
+ rootmnt="${2}"
+ mac="${3}"
+
+
+ if match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.squashfs" ||
+ match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext2" ||
+ match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext3" ||
+ match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.ext4" ||
+ match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.jffs2" ||
+ match_files_in_dir "${directory}/${LIVE_MEDIA_PATH}/*.dir"
+ then
+ [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
+ setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
+ else
+ panic "No supported filesystem images found at /${LIVE_MEDIA_PATH}."
+ fi
+}
+
+is_nice_device ()
+{
+ sysfs_path="${1#/sys}"
+
+ if [ -e /lib/udev/path_id ]
+ then
+ # squeeze
+ PATH_ID="/lib/udev/path_id"
+ else
+ # wheezy/sid (udev >= 174)
+ PATH_ID="/sbin/udevadm test-builtin path_id"
+ fi
+
+ if ${PATH_ID} "${sysfs_path}" | egrep -q "ID_PATH=(usb|pci-[^-]*-(ide|sas|scsi|usb|virtio)|platform-sata_mv|platform-orion-ehci|platform-mmc|platform-mxsdhci)"
+ then
+ return 0
+ elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
+ then
+ return 0
+ elif echo ${sysfs_path} | grep -q "^/block/dm-"
+ then
+ return 0
+ elif echo ${sysfs_path} | grep -q "^/block/mtdblock"
+ then
+ return 0
+ fi
+
+ return 1
+}
+
+check_dev ()
+{
+ sysdev="${1}"
+ devname="${2}"
+ skip_uuid_check="${3}"
+
+ # support for fromiso=.../isofrom=....
+ if [ -n "$FROMISO" ]
+ then
+ ISO_DEVICE=$(dirname $FROMISO)
+ if ! [ -b $ISO_DEVICE ]
+ then
+ # to support unusual device names like /dev/cciss/c0d0p1
+ # as well we have to identify the block device name, let's
+ # do that for up to 15 levels
+ i=15
+ while [ -n "$ISO_DEVICE" ] && [ "$i" -gt 0 ]
+ do
+ ISO_DEVICE=$(dirname ${ISO_DEVICE})
+ [ -b "$ISO_DEVICE" ] && break
+ i=$(($i -1))
+ done
+ fi
+
+ if [ "$ISO_DEVICE" = "/" ]
+ then
+ echo "Warning: device for bootoption fromiso= ($FROMISO) not found.">>/boot.log
+ else
+ fs_type=$(get_fstype "${ISO_DEVICE}")
+ if is_supported_fs ${fs_type}
+ then
+ mkdir /live/fromiso
+ mount -t $fs_type "$ISO_DEVICE" /live/fromiso
+ ISO_NAME="$(echo $FROMISO | sed "s|$ISO_DEVICE||")"
+ loopdevname=$(setup_loop "/live/fromiso/${ISO_NAME}" "loop" "/sys/block/loop*" "" '')
+ devname="${loopdevname}"
+ else
+ echo "Warning: unable to mount $ISO_DEVICE." >>/boot.log
+ fi
+ fi
+ fi
+
+ if [ -z "${devname}" ]
+ then
+ devname=$(sys2dev "${sysdev}")
+ fi
+
+ if [ -d "${devname}" ]
+ then
+ mount -o bind "${devname}" $mountpoint || continue
+
+ if is_live_path $mountpoint
+ then
+ echo $mountpoint
+ return 0
+ else
+ umount $mountpoint
+ fi
+ fi
+
+ IFS=","
+ for device in ${devname}
+ do
+ case "$device" in
+ *mapper*)
+ # Adding lvm support
+ if [ -x /scripts/local-top/lvm2 ]
+ then
+ ROOT="$device" resume="" /scripts/local-top/lvm2
+ fi
+ ;;
+
+ /dev/md*)
+ # Adding raid support
+ if [ -x /scripts/local-top/mdadm ]
+ then
+ cp /conf/conf.d/md /conf/conf.d/md.orig
+ echo "MD_DEVS=$device " >> /conf/conf.d/md
+ /scripts/local-top/mdadm
+ mv /conf/conf.d/md.orig /conf/conf.d/md
+ fi
+ ;;
+ esac
+ done
+ unset IFS
+
+ [ -n "$device" ] && devname="$device"
+
+ [ -e "$devname" ] || continue
+
+ if [ -n "${LIVE_MEDIA_OFFSET}" ]
+ then
+ loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
+ devname="${loopdevname}"
+ fi
+
+ fstype=$(get_fstype "${devname}")
+
+ if is_supported_fs ${fstype}
+ then
+ devuid=$(blkid -o value -s UUID "$devname")
+ [ -n "$devuid" ] && grep -qs "\<$devuid\>" $tried && continue
+ mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
+ [ -n "$devuid" ] && echo "$devuid" >> $tried
+
+ if [ -n "${FINDISO}" ]
+ then
+ if [ -f ${mountpoint}/${FINDISO} ]
+ then
+ umount ${mountpoint}
+ mkdir -p /live/findiso
+ mount -t ${fstype} -o ro,noatime "${devname}" /live/findiso
+ loopdevname=$(setup_loop "/live/findiso/${FINDISO}" "loop" "/sys/block/loop*" 0 "")
+ devname="${loopdevname}"
+ mount -t iso9660 -o ro,noatime "${devname}" ${mountpoint}
+ else
+ umount ${mountpoint}
+ fi
+ fi
+
+ if is_live_path ${mountpoint} && \
+ ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
+ then
+ echo ${mountpoint}
+ return 0
+ else
+ umount ${mountpoint} 2>/dev/null
+ fi
+ fi
+
+ if [ -n "${LIVE_MEDIA_OFFSET}" ]
+ then
+ losetup -d "${loopdevname}"
+ fi
+
+ return 1
+}
+
+find_livefs ()
+{
+ timeout="${1}"
+
+ # don't start autodetection before timeout has expired
+ if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
+ then
+ if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
+ then
+ return 1
+ fi
+ fi
+
+ # first look at the one specified in the command line
+ case "${LIVE_MEDIA}" in
+ removable-usb)
+ for sysblock in $(removable_usb_dev "sys")
+ do
+ for dev in $(subdevices "${sysblock}")
+ do
+ if check_dev "${dev}"
+ then
+ return 0
+ fi
+ done
+ done
+ return 1
+ ;;
+
+ removable)
+ for sysblock in $(removable_dev "sys")
+ do
+ for dev in $(subdevices "${sysblock}")
+ do
+ if check_dev "${dev}"
+ then
+ return 0
+ fi
+ done
+ done
+ return 1
+ ;;
+
+ *)
+ if [ ! -z "${LIVE_MEDIA}" ]
+ then
+ if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
+ then
+ return 0
+ fi
+ fi
+ ;;
+ esac
+
+ # or do the scan of block devices
+ # prefer removable devices over non-removable devices, so scan them first
+ devices_to_scan="$(removable_dev 'sys') $(non_removable_dev 'sys')"
+
+ for sysblock in $devices_to_scan
+ do
+ devname=$(sys2dev "${sysblock}")
+ [ -e "$devname" ] || continue
+ fstype=$(get_fstype "${devname}")
+
+ if /lib/udev/cdrom_id ${devname} > /dev/null
+ then
+ if check_dev "null" "${devname}"
+ then
+ return 0
+ fi
+ elif is_nice_device "${sysblock}"
+ then
+ for dev in $(subdevices "${sysblock}")
+ do
+ if check_dev "${dev}"
+ then
+ return 0
+ fi
+ done
+ elif [ "${fstype}" = "squashfs" -o \
+ "${fstype}" = "btrfs" -o \
+ "${fstype}" = "ext2" -o \
+ "${fstype}" = "ext3" -o \
+ "${fstype}" = "ext4" -o \
+ "${fstype}" = "jffs2" ]
+ then
+ # This is an ugly hack situation, the block device has
+ # an image directly on it. It's hopefully
+ # live-boot, so take it and run with it.
+ ln -s "${devname}" "${devname}.${fstype}"
+ echo "${devname}.${fstype}"
+ return 0
+ fi
+ done
+
+ return 1
+}
+
+really_export ()
+{
+ STRING="${1}"
+ VALUE="$(eval echo -n \${$STRING})"
+
+ if [ -f /live.vars ] && grep -sq "export ${STRING}" /live.vars
+ then
+ sed -i -e 's/\('${STRING}'=\).*$/\1'${VALUE}'/' /live.vars
+ else
+ echo "export ${STRING}=\"${VALUE}\"" >> /live.vars
+ fi
+
+ eval export "${STRING}"="${VALUE}"
+}
+
is_in_list_separator_helper () {
local sep=${1}
shift
probe_for_gpt_name ()
{
local overlays="${1}"
- local snapshots="${2}"
- local dev="${3}"
+ local dev="${2}"
local gpt_dev="${dev}"
if is_active_luks_mapping ${dev}
fi
local gpt_name=$(get_gpt_name ${gpt_dev})
- for label in ${overlays} ${snapshots}
+ for label in ${overlays}
do
if [ "${gpt_name}" = "${label}" ]
then
probe_for_fs_label ()
{
local overlays="${1}"
- local snapshots="${2}"
- local dev="${3}"
+ local dev="${2}"
- for label in ${overlays} ${snapshots}
+ for label in ${overlays}
do
if [ "$(/sbin/blkid -s LABEL -o value $dev 2>/dev/null)" = "${label}" ]
then
probe_for_file_name ()
{
local overlays="${1}"
- local snapshots="${2}"
- local dev="${3}"
+ local dev="${2}"
local ret=""
local backing="$(mount_persistence_media ${dev} probe)"
ret="${ret} ${label}=${loopdev}"
fi
done
- for label in ${snapshots}
- do
- for ext in squashfs cpio.gz ext2 ext3 ext4 jffs2
- do
- path="${PERSISTENCE_PATH}${label}.${ext}"
- if [ -f "${backing}/${path}" ]
- then
- ret="${ret} ${label}=${dev}:${backing}:${path}"
- fi
- done
- done
if [ -n "${ret}" ]
then
find_persistence_media ()
{
- # Scans devices for overlays and snapshots, and returns a whitespace
+ # Scans devices for overlays, 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}.
+ # label or file name in ${overlays} are returned.
#
# When scanning a LUKS device, the user will be asked to enter the
# passphrase; on failure to enter it, or if no persistence partitions
# or files were found, the LUKS device is closed.
#
- # For a snapshot file the return value is ${label}=${snapdata}", where
- # ${snapdata} is the parameter used for try_snap().
- #
- # For all other cases (overlay/snapshot partition and overlay file) the
+ # For all other cases (overlay partition and overlay file) the
# return value is "${label}=${device}", where ${device} a device that
# can mount the content. In the case of an overlay file, the device
# containing the file will remain mounted as a side-effect.
# scanned.
local overlays="${1}"
- local snapshots="${2}"
- local white_listed_devices="${3}"
+ local white_listed_devices="${2}"
local ret=""
local black_listed_devices="$(what_is_mounted_on /live/image)"
# Probe for matching GPT partition names or filesystem labels
if is_in_comma_sep_list filesystem ${PERSISTENCE_STORAGE}
then
- result=$(probe_for_gpt_name "${overlays}" "${snapshots}" ${dev})
+ result=$(probe_for_gpt_name "${overlays}" ${dev})
if [ -n "${result}" ]
then
ret="${ret} ${result}"
continue
fi
- result=$(probe_for_fs_label "${overlays}" "${snapshots}" ${dev})
+ result=$(probe_for_fs_label "${overlays}" ${dev})
if [ -n "${result}" ]
then
ret="${ret} ${result}"
# Probe for files with matching name on mounted partition
if is_in_comma_sep_list file ${PERSISTENCE_STORAGE}
then
- result=$(probe_for_file_name "${overlays}" "${snapshots}" ${dev})
+ result=$(probe_for_file_name "${overlays}" ${dev})
if [ -n "${result}" ]
then
ret="${ret} ${result}"
then
if [ -z "${want_usb}" ]
then
- dev_ok="yes"
+ dev_ok="true"
else
if readlink ${sysblock} | grep -q usb
then
- dev_ok="yes"
+ dev_ok="true"
fi
fi
fi
- if [ "${dev_ok}" = "yes" ]
+ if [ "${dev_ok}" = "true" ]
then
case "${output_format}" in
sys)
opt_source=${opt#source=}
;;
link)
- opt_link="yes"
+ opt_link="true"
;;
union|bind)
;;
while read device source dest options # < ${custom_mounts}
do
- local opt_bind="yes"
+ local opt_bind="true"
local opt_link=""
local opt_union=""
for opt in $(echo ${options} | tr ',' ' ');
do
case "${opt}" in
bind)
- opt_bind="yes"
+ opt_bind="true"
unset opt_link opt_union
;;
link)
- opt_link="yes"
+ opt_link="true"
unset opt_bind opt_union
;;
union)
- opt_union="yes"
+ opt_union="true"
unset opt_bind opt_link
;;
esac
projects / live-boot-grml.git / blobdiff