7 DIRECTORY="${1}/${LIVE_MEDIA_PATH}"
8 for FILESYSTEM in squashfs ext2 ext3 ext4 xfs dir jffs
10 if ls "${DIRECTORY}/"*.${FILESYSTEM} > /dev/null 2>&1
22 if [ -n "$IGNORE_BOOTID" ] ; then
23 echo " * Ignoring verification of bootid.txt as requested via ignore_bootid.">>/boot.log
27 if [ -n "$BOOTID" ] && ! [ -r "${path}/conf/bootid.txt" ] ; then
28 echo " * Warning: bootid=... specified but no bootid.txt found on currently requested device.">>/boot.log
32 [ -r "${path}/conf/bootid.txt" ] || return 0
34 bootid_conf=$(cat "${path}/conf/bootid.txt")
36 if [ -z "$BOOTID" -a -z "$IGNORE_BOOTID" ]
38 echo " * Warning: bootid.txt found but ignore_bootid / bootid=.. bootoption missing...">>/boot.log
42 if [ "$BOOTID" = "$bootid_conf" ]
44 echo " * Successfully verified /conf/bootid.txt from ISO, continuing... ">>/boot.log
46 echo " * Warning: BOOTID of ISO does not match. Retrying and continuing search...">>/boot.log
56 if [ "${IGNORE_UUID}" ] || [ ! -e /conf/uuid.conf ]
62 uuid="$(cat /conf/uuid.conf)"
64 for try_uuid_file in "${path}/.disk/live-uuid"*
66 [ -e "${try_uuid_file}" ] || continue
68 try_uuid="$(cat "${try_uuid_file}")"
70 if [ "${uuid}" = "${try_uuid}" ]
82 *.squashfs|*.ext2|*.ext3|*.ext4|*.jffs2)
83 echo $(setup_loop "${1}" "loop" "/sys/block/loop*" '0' "${LIVE_MEDIA_ENCRYPTION}" "${2}")
91 panic "Unrecognized live filesystem: ${1}"
96 mount_images_in_directory ()
102 if is_live_path "${directory}"
104 [ -n "${mac}" ] && adddirectory="${directory}/${LIVE_MEDIA_PATH}/${mac}"
105 setup_unionfs "${directory}/${LIVE_MEDIA_PATH}" "${rootmnt}" "${adddirectory}"
107 panic "No supported filesystem images found at /${LIVE_MEDIA_PATH}."
113 sysfs_path="${1#/sys}"
115 if udevadm info --query=all --path="${sysfs_path}" | egrep -q "DEVTYPE=disk"
118 elif echo "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
121 elif echo ${sysfs_path} | grep -q "^/block/dm-"
124 elif echo ${sysfs_path} | grep -q "^/block/mtdblock"
137 skip_uuid_check="${3}"
139 # support for fromiso=.../isofrom=....
142 fs_type="${FROMISO%%:*}"
144 ISO_DEVICE="${FROMISO}"
145 if echo "${fs_type}" | grep -q '[^[:alnum:]_-]'; then
146 # Not a valid file system name. Treat as part of the
147 # path, and, especially, use autodetection.
150 # Looks like a file system specification, treat it
153 ISO_DEVICE="${ISO_DEVICE#*:}"
155 ISO_DEVICE=$(dirname "${ISO_DEVICE}")
156 if ! [ -b $ISO_DEVICE ]
158 # to support unusual device names like /dev/cciss/c0d0p1
159 # as well we have to identify the block device name, let's
160 # do that for up to 15 levels
162 while [ -n "$ISO_DEVICE" ] && [ "$i" -gt 0 ]
164 ISO_DEVICE=$(dirname ${ISO_DEVICE})
165 [ -b "$ISO_DEVICE" ] && break
170 if [ "$ISO_DEVICE" = "/" ]
172 # not a block device, check if it's an iso file, for
173 # example an ISO when booting on an ONIE system
174 if echo "${FROMISO}" | grep -q "\.iso$"
176 if [ '0' -ne "${fs_type_auto}" ]; then
177 # Autodetect fs type if not overridden.
178 fs_type=$(get_fstype "${FROMISO}")
180 if is_supported_fs ${fs_type}
182 mkdir /run/live/fromiso
183 mount -t "${fs_type}" -o 'ro' "${FROMISO}" '/run/live/fromiso'
186 echo "Warning: unable to mount ${FROMISO} (type ${fs_type})." >>/boot.log
188 devname="/run/live/fromiso"
191 echo "Warning: device for bootoption fromiso= ($FROMISO) not found.">>/boot.log
194 # Need to extract actual ISO file path later on,
196 iso_name="${FROMISO}"
198 if [ '0' -ne "${fs_type_auto}" ]; then
199 # Try to auto-detect file system if not
200 # explicitly provided.
201 fs_type=$(get_fstype "${ISO_DEVICE}")
203 # Delete file system type override.
204 iso_name="${iso_name#*:}"
206 # At this point, the backing device should always be
207 # at the very front, so remove that - leaving only the
209 iso_name="$(echo "${iso_name}" | sed "s|^${ISO_DEVICE}||")"
210 if is_supported_fs ${fs_type}
212 mkdir /run/live/fromiso
213 mount -t "${fs_type}" -o 'ro' "$ISO_DEVICE" '/run/live/fromiso'
214 loopdevname=$(setup_loop "/run/live/fromiso/${iso_name}" "loop" "/sys/block/loop*" "" '')
215 devname="${loopdevname}"
217 echo "Warning: unable to mount $ISO_DEVICE (type ${fs_type})." >>/boot.log
222 if [ -z "${devname}" ]
224 devname=$(sys2dev "${sysdev}")
227 if [ -d "${devname}" ]
229 mount -o bind "${devname}" $mountpoint || continue
231 if is_live_path $mountpoint
241 for device in ${devname}
246 if [ -x /scripts/local-top/lvm2 ]
248 ROOT="$device" resume="" /scripts/local-top/lvm2 >>/boot.log
253 # Adding raid support
254 if [ -x /scripts/local-block/mdadm ]
256 # Back in the day, when there was still a local-top mdadm script, we
257 # used to select specific devices to be auto-assembled.
258 # This functionality was dropped in the local-block script, so just
259 # scan and assemble all RAID devices.
260 /scripts/local-block/mdadm >>/boot.log
267 [ -n "$device" ] && devname="$device"
269 [ -e "$devname" ] || continue
271 if [ -n "${LIVE_MEDIA_OFFSET}" ]
273 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
274 devname="${loopdevname}"
277 fstype=$(get_fstype "${devname}")
279 if is_supported_fs ${fstype}
281 devuid=$(blkid -o value -s UUID "$devname")
282 [ -n "$devuid" ] && grep -qs "\<$devuid\>" /var/lib/live/boot/devices-already-tried-to-mount && continue
284 for _PARAMETER in ${LIVE_BOOT_CMDLINE}
286 case "${_PARAMETER}" in
293 if [ "${PERSISTENCE_FSCK}" = "true" ] || [ "${PERSISTENCE_FSCK}" = "yes" ] || [ "${FORCEFSCK}" = "true" ]
296 if [ "$FORCEFSCK" = "true" ]
302 if [ "$FSCKFIX" = "true" ] || [ "$FSCKFIX" = "yes" ]
307 fsck $fix $force ${devname} >> fsck.log 2>&1
310 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
311 [ -n "$devuid" ] && echo "$devuid" >> /var/lib/live/boot/devices-already-tried-to-mount
313 if [ -n "${FINDISO}" ]
315 if [ -f ${mountpoint}/${FINDISO} ]
318 mkdir -p /run/live/findiso
319 mount -t ${fstype} -o ro,noatime "${devname}" /run/live/findiso
320 loopdevname=$(setup_loop "/run/live/findiso/${FINDISO}" "loop" "/sys/block/loop*" 0 "")
321 devname="${loopdevname}"
322 mount -t iso9660 -o ro,noatime "${devname}" ${mountpoint}
328 if is_live_path ${mountpoint} && \
329 ([ "${skip_uuid_check}" ] || grml_match_bootid ${mountpoint})
334 umount ${mountpoint} 2>/dev/null
338 if [ -n "${LIVE_MEDIA_OFFSET}" ]
340 losetup -d "${loopdevname}"
350 # don't start autodetection before timeout has expired
351 if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
353 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
359 # first look at the one specified in the command line
360 case "${LIVE_MEDIA}" in
362 for sysblock in $(removable_usb_dev "sys")
364 for dev in $(subdevices "${sysblock}")
366 if check_dev "${dev}"
376 for sysblock in $(removable_dev "sys")
378 for dev in $(subdevices "${sysblock}")
380 if check_dev "${dev}"
390 if [ ! -z "${LIVE_MEDIA}" ]
392 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
400 # or do the scan of block devices
401 # prefer removable devices over non-removable devices, so scan them first
402 devices_to_scan="$(removable_dev 'sys') $(non_removable_dev 'sys')"
404 for sysblock in $devices_to_scan
406 devname=$(sys2dev "${sysblock}")
407 [ -e "$devname" ] || continue
408 fstype=$(get_fstype "${devname}")
410 if /lib/udev/cdrom_id ${devname} > /dev/null
412 if check_dev "null" "${devname}"
416 elif is_nice_device "${sysblock}"
418 for dev in $(subdevices "${sysblock}")
420 if check_dev "${dev}"
431 is_in_list_separator_helper ()
433 local sep element list
439 echo ${list} | grep -qe "^\(.*${sep}\)\?${element}\(${sep}.*\)\?$"
442 is_in_space_sep_list ()
447 is_in_list_separator_helper "[[:space:]]" "${element}" "${*}"
450 is_in_comma_sep_list ()
455 is_in_list_separator_helper "," "${element}" "${*}"
461 echo "/dev/$(udevadm info -q name -p ${sysdev} 2>/dev/null|| echo ${sysdev##*/})"
469 for dev in "${sysblock}"/* "${sysblock}"
471 if [ -e "${dev}/dev" ]
482 black_listed_devices="${1}"
483 white_listed_devices="${2}"
485 for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "loop|ram|fd")
487 fulldevname=$(sys2dev "${sysblock}")
489 if is_in_space_sep_list ${fulldevname} ${black_listed_devices} || \
490 [ -n "${white_listed_devices}" ] && \
491 ! is_in_space_sep_list ${fulldevname} ${white_listed_devices}
493 # skip this device entirely
497 for dev in $(subdevices "${sysblock}")
499 devname=$(sys2dev "${dev}")
501 if is_in_space_sep_list ${devname} ${black_listed_devices}
503 # skip this subdevice
516 # Validate input first
517 if [ -z "${fstype}" ]
522 # get_fstype might report "unknown" or "swap", ignore it as no such kernel module exists
523 if [ "${fstype}" = "unknown" ] || [ "${fstype}" = "swap" ]
528 # Try to look if it is already supported by the kernel
529 # For ntfs, since user space program ntfs-3g will be used. Check ntfs-3g instead of kernel module.
530 if [ "${fstype}" = "ntfs" ]; then
531 if type ntfs-3g >/dev/null 2>&1; then
537 if grep -q ${fstype} /proc/filesystems
541 # Then try to add support for it the gentle way using the initramfs capabilities
542 modprobe -q -b ${fstype}
543 if grep -q ${fstype} /proc/filesystems
546 # Then try the hard way if /root is already reachable
548 kmodule="/root/lib/modules/`uname -r`/${fstype}/${fstype}.ko"
549 if [ -e "${kmodule}" ]
552 if grep -q ${fstype} /proc/filesystems
565 blkid -s TYPE -o value $1 2>/dev/null
572 grep -m1 "^${device} " /proc/mounts | cut -f2 -d ' '
577 # remove all unnecessary /:s in the path, including last one (except
578 # if path is just "/")
579 echo ${1} | sed 's|//\+|/|g' | sed 's|^\(.*[^/]\)/$|\1|'
582 what_is_mounted_on ()
585 dir="$(trim_path ${1})"
586 grep -m1 "^[^ ]\+ ${dir} " /proc/mounts | cut -d' ' -f1
591 local reference targets owner
595 owner=$(stat -c %u:%g "${reference}")
596 chown -h ${owner} ${targets}
601 local reference targets rights
605 rights=$(stat -c %a "${reference}")
606 chmod ${rights} ${targets}
622 mounts="$(awk '{print $2}' /proc/mounts)"
623 testpath="$(realpath ${testpath})"
627 if echo "${mounts}" | grep -qs "^${testpath}"
629 set -- $(echo "${mounts}" | grep "^${testpath}" | lastline)
633 testpath=$(dirname $testpath)
640 # Returns used/free fs kbytes + 5% more
641 # You could pass a block device as ${1} or the mount point as ${2}
647 if [ -z "${mountp}" ]
649 mountp="$(where_is_mounted ${dev})"
651 if [ -z "${mountp}" ]
653 mountp="/mnt/tmp_fs_size"
656 mount -t $(get_fstype "${dev}") -o ro "${dev}" "${mountp}" || log_warning_msg "cannot mount -t $(get_fstype ${dev}) -o ro ${dev} ${mountp}"
662 if [ "${used}" = "used" ]
664 size=$(du -ks ${mountp} | cut -f1)
665 size=$(expr ${size} + ${size} / 20 ) # FIXME: 5% more to be sure
668 size="$(df -kP | grep -s ${mountp} | awk '{print $4}')"
671 if [ -n "${doumount}" ]
673 umount "${mountp}" || log_warning_msg "cannot umount ${mountp}"
683 if [ -x /bin/loadkeys -a -r /etc/boottime.kmap.gz ]
685 loadkeys --quiet /etc/boottime.kmap.gz
691 local fspath module pattern offset encryption readonly
699 # the output of setup_loop is evaluated in other functions,
700 # modprobe leaks kernel options like "libata.dma=0"
701 # as "options libata dma=0" on stdout, causing serious
702 # problems therefor, so instead always avoid output to stdout
703 modprobe -q -b "${module}" 1>/dev/null
707 for loopdev in ${pattern}
709 if [ "$(cat ${loopdev}/size)" -eq 0 ]
711 dev=$(sys2dev "${loopdev}")
714 if [ -n "${readonly}" ]
716 if losetup --help 2>&1 | grep -q -- "-r\b"
718 options="${options} -r"
722 if [ -n "${offset}" ] && [ 0 -lt "${offset}" ]
724 options="${options} -o ${offset}"
727 if [ -z "${encryption}" ]
729 losetup ${options} "${dev}" "${fspath}"
731 # Loop AES encryption
736 echo -n "Enter passphrase for root filesystem: " >&6
738 echo "${passphrase}" > /tmp/passphrase
740 exec 9</tmp/passphrase
741 losetup ${options} -e "${encryption}" -p 9 "${dev}" "${fspath}"
744 rm -f /tmp/passphrase
746 if [ 0 -eq ${error} ]
753 echo -n "There was an error decrypting the root filesystem ... Retry? [Y/n] " >&6
756 if [ "$(echo "${answer}" | cut -b1 | tr A-Z a-z)" = "n" ]
769 panic "No loop devices available"
779 old_mountp="$(where_is_mounted ${dev})"
781 if [ -n "${old_mountp}" ]
783 if [ "${opts}" != "ro" ]
785 mount -o remount,"${opts}" "${dev}" "${old_mountp}" || panic "Remounting ${dev} ${opts} on ${old_mountp} failed"
788 mount -o bind "${old_mountp}" "${mountp}" || panic "Cannot bind-mount ${old_mountp} on ${mountp}"
790 if [ -z "${fstype}" ]
792 fstype=$(get_fstype "${dev}")
794 mount -t "${fstype}" -o "${opts}" "${dev}" "${mountp}" || \
795 ( echo "SKIPPING: Cannot mount ${dev} on ${mountp}, fstype=${fstype}, options=${opts}" >> boot.log && return 0 )
799 # Try to mount $device to the place expected by live-boot. If $device
800 # is already mounted somewhere, move it to the expected place. If $device
801 # ends with a "/" this is a directory path.
802 # If we're only probing $device (to check if it has custom persistence)
803 # $probe should be set, which suppresses warnings upon failure. On
804 # success, print the mount point for $device.
805 mount_persistence_media ()
807 local device probe backing old_backing fstype mount_opts
811 # get_custom_mounts() might call this with a directory path instead
812 # of a block device path. This means we have found sub-directory path
813 # underneath /run/live/persistence, so we're done
814 if [ -d "${device}" ]
820 if [ ! -b "${device}" ]
825 backing="/run/live/persistence/$(basename ${device})"
827 mkdir -p "${backing}"
828 old_backing="$(where_is_mounted ${device})"
829 if [ -z "${old_backing}" ]
831 fstype="$(get_fstype ${device})"
832 mount_opts="rw,noatime"
833 if [ -n "${PERSISTENCE_READONLY}" ]
835 mount_opts="ro,noatime"
837 if mount -t "${fstype}" -o "${mount_opts}" "${device}" "${backing}" >/dev/null 2>&1
842 [ -z "${probe}" ] && log_warning_msg "Failed to mount persistence media ${device}"
846 elif [ "${backing}" != "${old_backing}" ]
848 if ! mount -o move ${old_backing} ${backing} >/dev/null
850 [ -z "${probe}" ] && log_warning_msg "Failed to move persistence media ${device}"
854 mount_opts="rw,noatime"
855 if [ -n "${PERSISTENCE_READONLY}" ]
857 mount_opts="ro,noatime"
859 if ! mount -o "remount,${mount_opts}" "${backing}" >/dev/null
861 log_warning_msg "Failed to remount persistence media ${device} writable"
862 # Don't unmount or rmdir the new mountpoint in this case
867 # This means that $device has already been mounted on
868 # the place expected by live-boot, so we're done.
874 close_persistence_media ()
878 backing="$(where_is_mounted ${device})"
880 if [ -d "${backing}" ]
882 umount "${backing}" >/dev/null 2>&1
883 rmdir "${backing}" >/dev/null 2>&1
886 if is_active_luks_mapping ${device}
888 cryptsetup luksClose ${device}
895 name="$(basename ${dev})"
897 if [ -n "${PERSISTENCE_READONLY}" ]
899 opts="${opts} --readonly"
902 if cryptsetup status "${name}" >/dev/null 2>&1
904 re="^[[:space:]]*device:[[:space:]]*\([^[:space:]]*\)$"
905 opened_dev=$(cryptsetup status ${name} 2>/dev/null | grep "${re}" | sed "s|${re}|\1|")
906 if [ "${opened_dev}" = "${dev}" ]
908 luks_device="/dev/mapper/${name}"
912 log_warning_msg "Cannot open luks device ${dev} since ${opened_dev} already is opened with its name"
920 if [ -x /bin/plymouth ]
925 case "${_PLYMOUTH}" in
929 cryptkeyscript="plymouth ask-for-password --prompt"
930 # Plymouth will add a : if it is a non-graphical prompt
931 cryptkeyprompt="Please unlock disk ${dev}"
935 cryptkeyscript="/lib/cryptsetup/askpass"
936 cryptkeyprompt="Please unlock disk ${dev}: "
942 $cryptkeyscript "$cryptkeyprompt" | \
943 cryptsetup -T 1 luksOpen ${dev} ${name} ${opts}
947 luks_device="/dev/mapper/${name}"
953 retryprompt="There was an error decrypting ${dev} ... Retry? [Y/n]"
955 case "${_PLYMOUTH}" in
957 plymouth display-message --text "${retryprompt}"
958 answer=$(plymouth watch-keystroke --keys="YNyn")
962 echo -n "${retryprompt} " >&6
967 if [ "$(echo "${answer}" | cut -b1 | tr A-Z a-z)" = "n" ]
969 case "${_PLYMOUTH}" in
971 plymouth display-message --text ""
984 blkid -s PART_ENTRY_NAME -p -o value ${dev} 2>/dev/null
991 [ "$(blkid -s PART_ENTRY_SCHEME -p -o value ${dev} 2>/dev/null)" = "gpt" ]
994 probe_for_gpt_name ()
996 local overlays dev gpt_dev gpt_name
1001 if is_active_luks_mapping ${dev}
1003 # if $dev is an opened luks device, we need to check
1004 # GPT stuff on the backing device
1005 gpt_dev=$(get_luks_backing_device "${dev}")
1008 if ! is_gpt_device ${gpt_dev}
1013 gpt_name=$(get_gpt_name ${gpt_dev})
1014 for label in ${overlays}
1016 if [ "${gpt_name}" = "${label}" ]
1018 echo "${label}=${dev}"
1023 probe_for_fs_label ()
1029 for label in ${overlays}
1031 if [ "$(blkid -s LABEL -o value $dev 2>/dev/null)" = "${label}" ]
1033 echo "${label}=${dev}"
1038 probe_for_file_name ()
1040 local overlays dev ret backing
1045 backing="$(mount_persistence_media ${dev} probe)"
1046 if [ -z "${backing}" ]
1051 for label in ${overlays}
1053 path=${backing}/${PERSISTENCE_PATH}/${label}
1057 loopdev=$(setup_loop "${path}" "loop" "/sys/block/loop*")
1058 ret="${ret} ${label}=${loopdev}"
1066 # unmount and remove mountpoint
1067 umount ${backing} > /dev/null 2>&1 || true
1068 rmdir ${backing} > /dev/null 2>&1 || true
1072 probe_for_directory_name ()
1074 local overlays dev ret backing
1079 backing="$(mount_persistence_media ${dev} probe)"
1080 if [ -z "${backing}" ]
1085 for label in ${overlays}
1087 path=${backing}/${PERSISTENCE_PATH}/${label}
1090 # in this case the "device" ends with a "/"
1091 ret="${ret} ${label}=${backing}/${PERSISTENCE_PATH}/${label%%/}/"
1099 # unmount and remove mountpoint
1100 umount ${backing} > /dev/null 2>&1 || true
1101 rmdir ${backing} > /dev/null 2>&1 || true
1105 find_persistence_media ()
1107 # Scans devices for overlays, and returns a whitespace
1108 # separated list of how to use them. Only overlays with a partition
1109 # label or file name in ${overlays} are returned.
1111 # When scanning a LUKS device, the user will be asked to enter the
1112 # passphrase; on failure to enter it, or if no persistence partitions
1113 # or files were found, the LUKS device is closed.
1115 # For all other cases (overlay partition and overlay file) the
1116 # return value is "${label}=${device}", where ${device} a device that
1117 # can mount the content. In the case of an overlay file, the device
1118 # containing the file will remain mounted as a side-effect.
1120 # No devices in ${black_listed_devices} will be scanned, and if
1121 # ${white_list_devices} is non-empty, only devices in it will be
1124 local overlays white_listed_devices ret black_listed_devices
1126 white_listed_devices="${2}"
1130 # The devices that are hosting the actual live rootfs should not be
1131 # used for persistence storage since otherwise you might mount a
1132 # parent directory on top of a sub-directory of the same filesystem
1133 # in one union together.
1135 black_listed_devices=""
1136 for d in /run/live/rootfs/* /run/live/findiso /run/live/fromiso
1138 black_listed_devices="${black_listed_devices} $(what_is_mounted_on d)"
1141 for dev in $(storage_devices "${black_listed_devices}" "${white_listed_devices}")
1143 local result luks_device
1147 # Check if it's a luks device; we'll have to open the device
1148 # in order to probe any filesystem it contains, like we do
1149 # below. activate_custom_mounts() also depends on that any luks
1150 # device already has been opened.
1151 if is_in_comma_sep_list luks ${PERSISTENCE_ENCRYPTION} && is_luks_partition ${dev}
1153 if luks_device=$(open_luks_device "${dev}")
1155 dev="${luks_device}"
1157 # skip $dev since we failed/chose not to open it
1160 elif ! is_in_comma_sep_list none ${PERSISTENCE_ENCRYPTION}
1162 # skip $dev since we don't allow unencrypted storage
1166 # Probe for matching GPT partition names or filesystem labels
1167 if is_in_comma_sep_list filesystem ${PERSISTENCE_STORAGE}
1169 result=$(probe_for_gpt_name "${overlays}" ${dev})
1170 if [ -n "${result}" ]
1172 ret="${ret} ${result}"
1176 result=$(probe_for_fs_label "${overlays}" ${dev})
1177 if [ -n "${result}" ]
1179 ret="${ret} ${result}"
1184 # Probe for files with matching name on mounted partition
1185 if is_in_comma_sep_list file ${PERSISTENCE_STORAGE}
1187 result=$(probe_for_file_name "${overlays}" ${dev})
1188 if [ -n "${result}" ]
1191 loopdevice=${result##*=}
1192 if is_in_comma_sep_list luks ${PERSISTENCE_ENCRYPTION} && is_luks_partition ${loopdevice}
1196 if luksfile=$(open_luks_device "${loopdevice}")
1198 result=${result%%=*}
1199 result="${result}=${luksfile}"
1201 losetup -d $loopdevice
1205 ret="${ret} ${result}"
1210 # Probe for directory with matching name on mounted partition
1211 if is_in_comma_sep_list directory ${PERSISTENCE_STORAGE}
1213 result=$(probe_for_directory_name "${overlays}" ${dev})
1214 if [ -n "${result}" ]
1216 ret="${ret} ${result}"
1221 # Close luks device if it isn't used
1222 if [ -z "${result}" ] && [ -n "${luks_device}" ] && is_active_luks_mapping "${luks_device}"
1224 cryptsetup luksClose "${luks_device}"
1238 for adaptor in /sys/class/net/*
1240 status="$(cat ${adaptor}/iflink)"
1242 if [ "${status}" -eq 2 ]
1244 mac="$(cat ${adaptor}/address)"
1245 mac="$(echo ${mac} | sed 's/:/-/g' | tr '[a-z]' '[A-Z]')"
1252 is_luks_partition ()
1255 cryptsetup isLuks "${device}" 1>/dev/null 2>&1
1258 is_active_luks_mapping ()
1261 cryptsetup status "${device}" 1>/dev/null 2>&1
1264 get_luks_backing_device ()
1267 cryptsetup status ${device} 2> /dev/null | \
1268 awk '{if ($1 == "device:") print $2}'
1273 output_format="${1}"
1277 for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1279 if [ ! -d "${sysblock}" ]; then
1284 if [ "$(cat ${sysblock}/removable)" = "1" ]
1286 if [ -z "${want_usb}" ]
1290 if readlink ${sysblock} | grep -q usb
1297 if [ "${dev_ok}" = "true" ]
1299 case "${output_format}" in
1301 ret="${ret} ${sysblock}"
1304 devname=$(sys2dev "${sysblock}")
1305 ret="${ret} ${devname}"
1314 removable_usb_dev ()
1316 output_format="${1}"
1318 removable_dev "${output_format}" "want_usb"
1321 non_removable_dev ()
1323 output_format="${1}"
1326 for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1328 if [ ! -d "${sysblock}" ]; then
1332 if [ "$(cat ${sysblock}/removable)" = "0" ]
1334 case "${output_format}" in
1336 ret="${ret} ${sysblock}"
1339 devname=$(sys2dev "${sysblock}")
1340 ret="${ret} ${devname}"
1351 # create source's directory structure in dest, and recursively
1352 # create symlinks in dest to to all files in source. if mask
1353 # is non-empty, remove mask from all source paths when
1354 # creating links (will be necessary if we change root, which
1355 # live-boot normally does (into $rootmnt)).
1356 local src_dir dest_dir src_transform
1358 # remove multiple /:s and ensure ending on /
1359 src_dir="$(trim_path ${1})/"
1360 dest_dir="$(trim_path ${2})/"
1361 src_transform="${3}"
1363 # This check can only trigger on the inital, non-recursive call since
1364 # we create the destination before recursive calls
1365 if [ ! -d "${dest_dir}" ]
1367 log_warning_msg "Must link_files into a directory"
1371 find "${src_dir}" -mindepth 1 -maxdepth 1 | \
1374 local dest final_src
1375 dest="${dest_dir}$(basename "${src}")"
1378 if [ -z "$(ls -A "${src}")" ]
1382 if [ ! -d "${dest}" ]
1385 chown_ref "${src}" "${dest}"
1386 chmod_ref "${src}" "${dest}"
1388 link_files "${src}" "${dest}" "${src_transform}"
1391 if [ -n "${src_transform}" ]
1393 final_src="$(echo ${final_src} | sed "${src_transform}")"
1395 rm -rf "${dest}" 2> /dev/null
1396 ln -s "${final_src}" "${dest}"
1397 chown_ref "${src}" "${dest}"
1404 local unionmountpoint unionrw unionro
1405 unionmountpoint="${1}" # directory where the union is mounted
1407 unionrw="${1}" # branch where the union changes are stored
1409 unionro="${*}" # space separated list of read-only branches (optional)
1411 case "${UNIONTYPE}" in
1417 unionmountopts="-o noatime,${noxino_opt},dirs=${unionrw}=${rw_opt}"
1418 if [ -n "${unionro}" ]
1420 for rofs in ${unionro}
1422 unionmountopts="${unionmountopts}:${rofs}=${ro_opt}"
1428 # XXX: can unionro be optional? i.e. can overlay skip lowerdir?
1429 if [ -z "${unionro}" ]
1431 panic "overlay needs at least one lower filesystem (read-only branch)."
1433 # Multiple lower layers can now be given using the the colon (":") as a
1434 # separator character between the directory names.
1435 unionro="$(echo ${unionro} | sed -e 's| |:|g')"
1436 # overlayfs requires:
1437 # + a workdir to become mounted
1438 # + workdir and upperdir to reside under the same mount
1439 # + workdir and upperdir to be in separate directories
1440 mkdir -p "${unionrw}/rw"
1441 mkdir -p "${unionrw}/work"
1442 unionmountopts="-o noatime,lowerdir=${unionro},upperdir=${unionrw}/rw,workdir=${unionrw}/work"
1446 mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
1449 get_custom_mounts ()
1451 # Side-effect: leaves $devices with persistence.conf mounted in /run/live/persistence
1452 # Side-effect: prints info to file $custom_mounts
1454 local custom_mounts devices bindings links
1459 bindings="/tmp/bindings.list"
1460 links="/tmp/links.list"
1461 rm -rf ${bindings} ${links} 2> /dev/null
1463 for device in ${devices}
1465 local device_name backing include_list
1466 device_name="$(basename ${device})"
1467 backing=$(mount_persistence_media ${device})
1468 if [ -z "${backing}" ]
1473 if [ -r "${backing}/${persistence_list}" ]
1475 include_list="${backing}/${persistence_list}"
1480 if [ -n "${LIVE_BOOT_DEBUG}" ] && [ -e "${include_list}" ]
1482 cp ${include_list} /run/live/persistence/${persistence_list}.${device_name}
1485 while read dir options # < ${include_list}
1487 if echo ${dir} | grep -qe "^[[:space:]]*\(#.*\)\?$"
1489 # skipping empty or commented lines
1493 if trim_path ${dir} | grep -q -e "^[^/]" -e "^/lib" -e "^/run/live\(/.*\)\?$" -e "^/\(.*/\)\?\.\.\?\(/.*\)\?$"
1495 log_warning_msg "Skipping unsafe custom mount ${dir}: must be an absolute path containing neither the \".\" nor \"..\" special dirs, and cannot be \"/lib\", or \"/run/live\" or any of its sub-directories."
1499 local opt_source opt_link source full_source full_dest
1502 for opt in $(echo ${options} | tr ',' ' ');
1506 opt_source=${opt#source=}
1514 log_warning_msg "Skipping custom mount with unknown option: ${opt}"
1521 if [ -n "${opt_source}" ]
1523 if echo ${opt_source} | grep -q -e "^/" -e "^\(.*/\)\?\.\.\?\(/.*\)\?$" && [ "${opt_source}" != "." ]
1525 log_warning_msg "Skipping unsafe custom mount with option source=${opt_source}: must be either \".\" (the media root) or a relative path w.r.t. the media root that contains neither comas, nor the special \".\" and \"..\" path components"
1528 source="${opt_source}"
1532 full_source="$(trim_path ${backing}/${source})"
1533 full_dest="$(trim_path ${rootmnt}/${dir})"
1534 if [ -n "${opt_link}" ]
1536 echo "${device} ${full_source} ${full_dest} ${options}" >> ${links}
1538 echo "${device} ${full_source} ${full_dest} ${options}" >> ${bindings}
1540 done < ${include_list}
1543 # We sort the list according to destination so we're sure that
1544 # we won't hide a previous mount. We also ignore duplicate
1545 # destinations in a more or less arbitrary way.
1546 [ -e "${bindings}" ] && sort -k3 -sbu ${bindings} >> ${custom_mounts} && rm ${bindings}
1548 # After all mounts are considered we add symlinks so they
1549 # won't be hidden by some mount.
1550 [ -e "${links}" ] && cat ${links} >> ${custom_mounts} && rm ${links}
1552 # We need to make sure that no two custom mounts have the same sources
1553 # or are nested; if that is the case, too much weird stuff can happen.
1554 local prev_source prev_dest
1555 prev_source="impossible source" # first iteration must not match
1557 # This sort will ensure that a source /a comes right before a source
1558 # /a/b so we only need to look at the previous source
1559 [ -e ${custom_mounts} ] && sort -k2 -b ${custom_mounts} |
1560 while read device source dest options
1562 if echo ${source} | grep -qe "^${prev_source}\(/.*\)\?$"
1564 panic "Two persistence mounts have the same or nested sources: ${source} on ${dest}, and ${prev_source} on ${prev_dest}"
1566 prev_source=${source}
1571 activate_custom_mounts ()
1573 local custom_mounts used_devices
1574 custom_mounts="${1}" # the ouput from get_custom_mounts()
1577 while read device source dest options # < ${custom_mounts}
1579 local opt_bind opt_link opt_union
1583 for opt in $(echo ${options} | tr ',' ' ');
1588 unset opt_link opt_union
1592 unset opt_bind opt_union
1596 unset opt_bind opt_link
1601 if [ -n "$(what_is_mounted_on "${dest}")" ]
1603 if [ "${dest}" = "${rootmnt}" ]
1607 log_warning_msg "Skipping custom mount ${dest}: $(what_is_mounted_on "${dest}") is already mounted there"
1612 if [ ! -d "${dest}" ]
1614 # create the destination and delete existing files in
1615 # its path that are in the way
1617 for dir in $(echo ${dest} | sed -e 's|/\+| |g')
1619 path=$(trim_path ${path}/${dir})
1627 if echo ${path} | grep -qe "^${rootmnt}/*home/[^/]\+"
1629 # if ${dest} is in /home try fixing proper ownership by assuming that the intended user is the first, which is usually the case
1630 # FIXME: this should really be handled by live-config since we don't know for sure which uid a certain user has until then
1631 chown 1000:1000 ${path}
1637 # if ${source} doesn't exist on our persistence media
1638 # we bootstrap it with $dest from the live filesystem.
1639 # this both makes sense and is critical if we're
1640 # dealing with /etc or other system dir.
1641 if [ ! -d "${source}" ]
1643 if [ -n "${PERSISTENCE_READONLY}" ]
1646 elif [ -n "${opt_union}" ] || [ -n "${opt_link}" ]
1648 # unions and don't need to be bootstrapped
1649 # link dirs can't be bootstrapped in a sensible way
1650 mkdir -p "${source}"
1651 chown_ref "${dest}" "${source}"
1652 chmod_ref "${dest}" "${source}"
1653 elif [ -n "${opt_bind}" ]
1655 # ensure that $dest is not copied *into* $source
1656 mkdir -p "$(dirname ${source})"
1657 cp -a "${dest}" "${source}"
1661 # XXX: If CONFIG_AUFS_ROBR is added to the Debian kernel we can
1662 # ignore the loop below and set rootfs_dest_backing=$dest
1663 local rootfs_dest_backing
1664 rootfs_dest_backing=""
1665 if [ -n "${opt_link}" ] || [ -n "${opt_union}" ]
1667 for d in /run/live/rootfs/*
1669 if [ -n "${rootmnt}" ]
1671 fs="${d}/$(echo ${dest} | sed -e "s|${rootmnt}||")"
1677 rootfs_dest_backing="${rootfs_dest_backing} ${fs}"
1682 local cow_dir links_source
1683 if [ -n "${opt_link}" ] && [ -z "${PERSISTENCE_READONLY}" ]
1685 link_files ${source} ${dest} ""
1686 elif [ -n "${opt_link}" ] && [ -n "${PERSISTENCE_READONLY}" ]
1688 mkdir -p /run/live/persistence
1689 links_source=$(mktemp -d /run/live/persistence/links-source-XXXXXX)
1690 chown_ref ${source} ${links_source}
1691 chmod_ref ${source} ${links_source}
1692 # We put the cow dir in the below strange place to
1693 # make it absolutely certain that the link source
1694 # has its own directory and isn't nested with some
1695 # other custom mount (if so that mount's files would
1696 # be linked, causing breakage.
1697 cow_dir="/run/live/overlay/run/live/persistence/$(basename ${links_source})"
1699 chown_ref "${source}" "${cow_dir}"
1700 chmod_ref "${source}" "${cow_dir}"
1701 do_union ${links_source} ${cow_dir} ${source} ${rootfs_dest_backing}
1702 link_files ${links_source} ${dest} "s|^${rootmnt}||"
1703 elif [ -n "${opt_union}" ] && [ -z "${PERSISTENCE_READONLY}" ]
1705 do_union ${dest} ${source} ${rootfs_dest_backing}
1706 elif [ -n "${opt_bind}" ] && [ -z "${PERSISTENCE_READONLY}" ]
1708 mount -o bind "${source}" "${dest}"
1709 elif [ -n "${opt_bind}" -o -n "${opt_union}" ] && [ -n "${PERSISTENCE_READONLY}" ]
1711 # bind-mount and union mount are handled the same
1712 # in read-only mode, but note that rootfs_dest_backing
1713 # is non-empty (and necessary) only for unions
1714 cow_dir="/run/live/overlay/${dest}"
1715 if [ -e "${cow_dir}" ] && [ -z "${opt_link}" ]
1717 # If an earlier custom mount has files here
1718 # it will "block" the current mount's files
1719 # which is undesirable
1723 chown_ref "${source}" "${cow_dir}"
1724 chmod_ref "${source}" "${cow_dir}"
1725 if [ "${UNIONTYPE}" = "overlay" ]
1727 # When we use overlay we add the "/rw" postfix to our source when using it
1728 # as upper layer. Therefore we also have to add it here when using it as
1730 source="${source}/rw"
1732 do_union ${dest} ${cow_dir} ${source} ${rootfs_dest_backing}
1735 PERSISTENCE_IS_ON="1"
1736 export PERSISTENCE_IS_ON
1738 if echo ${used_devices} | grep -qve "^\(.* \)\?${device}\( .*\)\?$"
1740 used_devices="${used_devices} ${device}"
1742 done < ${custom_mounts}
1744 echo ${used_devices}
1751 [ $(stat -fc%d:%D "${directory}") != $(stat -fc%d:%D "${directory}/..") ]