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-top/mdadm ]
256 [ -r /conf/conf.d/md ] && cp /conf/conf.d/md /conf/conf.d/md.orig
257 echo "MD_DEVS=$device " >> /conf/conf.d/md
258 /scripts/local-top/mdadm >>/boot.log
259 [ -r /conf/conf.d/md.orig ] && mv /conf/conf.d/md.orig /conf/conf.d/md
266 [ -n "$device" ] && devname="$device"
268 [ -e "$devname" ] || continue
270 if [ -n "${LIVE_MEDIA_OFFSET}" ]
272 loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
273 devname="${loopdevname}"
276 fstype=$(get_fstype "${devname}")
278 if is_supported_fs ${fstype}
280 devuid=$(blkid -o value -s UUID "$devname")
281 [ -n "$devuid" ] && grep -qs "\<$devuid\>" /var/lib/live/boot/devices-already-tried-to-mount && continue
283 for _PARAMETER in ${LIVE_BOOT_CMDLINE}
285 case "${_PARAMETER}" in
292 if [ "${PERSISTENCE_FSCK}" = "true" ] || [ "${PERSISTENCE_FSCK}" = "yes" ] || [ "${FORCEFSCK}" = "true" ]
295 if [ "$FORCEFSCK" = "true" ]
301 if [ "$FSCKFIX" = "true" ] || [ "$FSCKFIX" = "yes" ]
306 fsck $fix $force ${devname} >> fsck.log 2>&1
309 mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
310 [ -n "$devuid" ] && echo "$devuid" >> /var/lib/live/boot/devices-already-tried-to-mount
312 if [ -n "${FINDISO}" ]
314 if [ -f ${mountpoint}/${FINDISO} ]
317 mkdir -p /run/live/findiso
318 mount -t ${fstype} -o ro,noatime "${devname}" /run/live/findiso
319 loopdevname=$(setup_loop "/run/live/findiso/${FINDISO}" "loop" "/sys/block/loop*" 0 "")
320 devname="${loopdevname}"
321 mount -t iso9660 -o ro,noatime "${devname}" ${mountpoint}
327 if is_live_path ${mountpoint} && \
328 ([ "${skip_uuid_check}" ] || grml_match_bootid ${mountpoint})
333 umount ${mountpoint} 2>/dev/null
337 if [ -n "${LIVE_MEDIA_OFFSET}" ]
339 losetup -d "${loopdevname}"
349 # don't start autodetection before timeout has expired
350 if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
352 if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
358 # first look at the one specified in the command line
359 case "${LIVE_MEDIA}" in
361 for sysblock in $(removable_usb_dev "sys")
363 for dev in $(subdevices "${sysblock}")
365 if check_dev "${dev}"
375 for sysblock in $(removable_dev "sys")
377 for dev in $(subdevices "${sysblock}")
379 if check_dev "${dev}"
389 if [ ! -z "${LIVE_MEDIA}" ]
391 if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
399 # or do the scan of block devices
400 # prefer removable devices over non-removable devices, so scan them first
401 devices_to_scan="$(removable_dev 'sys') $(non_removable_dev 'sys')"
403 for sysblock in $devices_to_scan
405 devname=$(sys2dev "${sysblock}")
406 [ -e "$devname" ] || continue
407 fstype=$(get_fstype "${devname}")
409 if /lib/udev/cdrom_id ${devname} > /dev/null
411 if check_dev "null" "${devname}"
415 elif is_nice_device "${sysblock}"
417 for dev in $(subdevices "${sysblock}")
419 if check_dev "${dev}"
430 is_in_list_separator_helper ()
432 local sep element list
438 echo ${list} | grep -qe "^\(.*${sep}\)\?${element}\(${sep}.*\)\?$"
441 is_in_space_sep_list ()
446 is_in_list_separator_helper "[[:space:]]" "${element}" "${*}"
449 is_in_comma_sep_list ()
454 is_in_list_separator_helper "," "${element}" "${*}"
460 echo "/dev/$(udevadm info -q name -p ${sysdev} 2>/dev/null|| echo ${sysdev##*/})"
468 for dev in "${sysblock}"/* "${sysblock}"
470 if [ -e "${dev}/dev" ]
481 black_listed_devices="${1}"
482 white_listed_devices="${2}"
484 for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "loop|ram|fd")
486 fulldevname=$(sys2dev "${sysblock}")
488 if is_in_space_sep_list ${fulldevname} ${black_listed_devices} || \
489 [ -n "${white_listed_devices}" ] && \
490 ! is_in_space_sep_list ${fulldevname} ${white_listed_devices}
492 # skip this device entirely
496 for dev in $(subdevices "${sysblock}")
498 devname=$(sys2dev "${dev}")
500 if is_in_space_sep_list ${devname} ${black_listed_devices}
502 # skip this subdevice
515 # Validate input first
516 if [ -z "${fstype}" ]
521 # get_fstype might report "unknown" or "swap", ignore it as no such kernel module exists
522 if [ "${fstype}" = "unknown" ] || [ "${fstype}" = "swap" ]
527 # Try to look if it is already supported by the kernel
528 # For ntfs, since user space program ntfs-3g will be used. Check ntfs-3g instead of kernel module.
529 if [ "${fstype}" = "ntfs" ]; then
530 if type ntfs-3g >/dev/null 2>&1; then
536 if grep -q ${fstype} /proc/filesystems
540 # Then try to add support for it the gentle way using the initramfs capabilities
541 modprobe -q -b ${fstype}
542 if grep -q ${fstype} /proc/filesystems
545 # Then try the hard way if /root is already reachable
547 kmodule="/root/lib/modules/`uname -r`/${fstype}/${fstype}.ko"
548 if [ -e "${kmodule}" ]
551 if grep -q ${fstype} /proc/filesystems
564 blkid -s TYPE -o value $1 2>/dev/null
571 grep -m1 "^${device} " /proc/mounts | cut -f2 -d ' '
576 # remove all unnecessary /:s in the path, including last one (except
577 # if path is just "/")
578 echo ${1} | sed 's|//\+|/|g' | sed 's|^\(.*[^/]\)/$|\1|'
581 what_is_mounted_on ()
584 dir="$(trim_path ${1})"
585 grep -m1 "^[^ ]\+ ${dir} " /proc/mounts | cut -d' ' -f1
590 local reference targets owner
594 owner=$(stat -c %u:%g "${reference}")
595 chown -h ${owner} ${targets}
600 local reference targets rights
604 rights=$(stat -c %a "${reference}")
605 chmod ${rights} ${targets}
621 mounts="$(awk '{print $2}' /proc/mounts)"
622 testpath="$(realpath ${testpath})"
626 if echo "${mounts}" | grep -qs "^${testpath}"
628 set -- $(echo "${mounts}" | grep "^${testpath}" | lastline)
632 testpath=$(dirname $testpath)
639 # Returns used/free fs kbytes + 5% more
640 # You could pass a block device as ${1} or the mount point as ${2}
646 if [ -z "${mountp}" ]
648 mountp="$(where_is_mounted ${dev})"
650 if [ -z "${mountp}" ]
652 mountp="/mnt/tmp_fs_size"
655 mount -t $(get_fstype "${dev}") -o ro "${dev}" "${mountp}" || log_warning_msg "cannot mount -t $(get_fstype ${dev}) -o ro ${dev} ${mountp}"
661 if [ "${used}" = "used" ]
663 size=$(du -ks ${mountp} | cut -f1)
664 size=$(expr ${size} + ${size} / 20 ) # FIXME: 5% more to be sure
667 size="$(df -kP | grep -s ${mountp} | awk '{print $4}')"
670 if [ -n "${doumount}" ]
672 umount "${mountp}" || log_warning_msg "cannot umount ${mountp}"
682 if [ -x /bin/loadkeys -a -r /etc/boottime.kmap.gz ]
684 loadkeys --quiet /etc/boottime.kmap.gz
690 local fspath module pattern offset encryption readonly
698 # the output of setup_loop is evaluated in other functions,
699 # modprobe leaks kernel options like "libata.dma=0"
700 # as "options libata dma=0" on stdout, causing serious
701 # problems therefor, so instead always avoid output to stdout
702 modprobe -q -b "${module}" 1>/dev/null
706 for loopdev in ${pattern}
708 if [ "$(cat ${loopdev}/size)" -eq 0 ]
710 dev=$(sys2dev "${loopdev}")
713 if [ -n "${readonly}" ]
715 if losetup --help 2>&1 | grep -q -- "-r\b"
717 options="${options} -r"
721 if [ -n "${offset}" ] && [ 0 -lt "${offset}" ]
723 options="${options} -o ${offset}"
726 if [ -z "${encryption}" ]
728 losetup ${options} "${dev}" "${fspath}"
730 # Loop AES encryption
735 echo -n "Enter passphrase for root filesystem: " >&6
737 echo "${passphrase}" > /tmp/passphrase
739 exec 9</tmp/passphrase
740 losetup ${options} -e "${encryption}" -p 9 "${dev}" "${fspath}"
743 rm -f /tmp/passphrase
745 if [ 0 -eq ${error} ]
752 echo -n "There was an error decrypting the root filesystem ... Retry? [Y/n] " >&6
755 if [ "$(echo "${answer}" | cut -b1 | tr A-Z a-z)" = "n" ]
768 panic "No loop devices available"
778 old_mountp="$(where_is_mounted ${dev})"
780 if [ -n "${old_mountp}" ]
782 if [ "${opts}" != "ro" ]
784 mount -o remount,"${opts}" "${dev}" "${old_mountp}" || panic "Remounting ${dev} ${opts} on ${old_mountp} failed"
787 mount -o bind "${old_mountp}" "${mountp}" || panic "Cannot bind-mount ${old_mountp} on ${mountp}"
789 if [ -z "${fstype}" ]
791 fstype=$(get_fstype "${dev}")
793 mount -t "${fstype}" -o "${opts}" "${dev}" "${mountp}" || \
794 ( echo "SKIPPING: Cannot mount ${dev} on ${mountp}, fstype=${fstype}, options=${opts}" >> boot.log && return 0 )
798 # Try to mount $device to the place expected by live-boot. If $device
799 # is already mounted somewhere, move it to the expected place. If $device
800 # ends with a "/" this is a directory path.
801 # If we're only probing $device (to check if it has custom persistence)
802 # $probe should be set, which suppresses warnings upon failure. On
803 # success, print the mount point for $device.
804 mount_persistence_media ()
806 local device probe backing old_backing fstype mount_opts
810 # get_custom_mounts() might call this with a directory path instead
811 # of a block device path. This means we have found sub-directory path
812 # underneath /run/live/persistence, so we're done
813 if [ -d "${device}" ]
819 if [ ! -b "${device}" ]
824 backing="/run/live/persistence/$(basename ${device})"
826 mkdir -p "${backing}"
827 old_backing="$(where_is_mounted ${device})"
828 if [ -z "${old_backing}" ]
830 fstype="$(get_fstype ${device})"
831 mount_opts="rw,noatime"
832 if [ -n "${PERSISTENCE_READONLY}" ]
834 mount_opts="ro,noatime"
836 if mount -t "${fstype}" -o "${mount_opts}" "${device}" "${backing}" >/dev/null 2>&1
841 [ -z "${probe}" ] && log_warning_msg "Failed to mount persistence media ${device}"
845 elif [ "${backing}" != "${old_backing}" ]
847 if ! mount -o move ${old_backing} ${backing} >/dev/null
849 [ -z "${probe}" ] && log_warning_msg "Failed to move persistence media ${device}"
853 mount_opts="rw,noatime"
854 if [ -n "${PERSISTENCE_READONLY}" ]
856 mount_opts="ro,noatime"
858 if ! mount -o "remount,${mount_opts}" "${backing}" >/dev/null
860 log_warning_msg "Failed to remount persistence media ${device} writable"
861 # Don't unmount or rmdir the new mountpoint in this case
866 # This means that $device has already been mounted on
867 # the place expected by live-boot, so we're done.
873 close_persistence_media ()
877 backing="$(where_is_mounted ${device})"
879 if [ -d "${backing}" ]
881 umount "${backing}" >/dev/null 2>&1
882 rmdir "${backing}" >/dev/null 2>&1
885 if is_active_luks_mapping ${device}
887 cryptsetup luksClose ${device}
894 name="$(basename ${dev})"
896 if [ -n "${PERSISTENCE_READONLY}" ]
898 opts="${opts} --readonly"
901 if cryptsetup status "${name}" >/dev/null 2>&1
903 re="^[[:space:]]*device:[[:space:]]*\([^[:space:]]*\)$"
904 opened_dev=$(cryptsetup status ${name} 2>/dev/null | grep "${re}" | sed "s|${re}|\1|")
905 if [ "${opened_dev}" = "${dev}" ]
907 luks_device="/dev/mapper/${name}"
911 log_warning_msg "Cannot open luks device ${dev} since ${opened_dev} already is opened with its name"
919 if [ -x /bin/plymouth ]
924 case "${_PLYMOUTH}" in
928 cryptkeyscript="plymouth ask-for-password --prompt"
929 # Plymouth will add a : if it is a non-graphical prompt
930 cryptkeyprompt="Please unlock disk ${dev}"
934 cryptkeyscript="/lib/cryptsetup/askpass"
935 cryptkeyprompt="Please unlock disk ${dev}: "
941 $cryptkeyscript "$cryptkeyprompt" | \
942 cryptsetup -T 1 luksOpen ${dev} ${name} ${opts}
946 luks_device="/dev/mapper/${name}"
952 retryprompt="There was an error decrypting ${dev} ... Retry? [Y/n]"
954 case "${_PLYMOUTH}" in
956 plymouth display-message --text "${retryprompt}"
957 answer=$(plymouth watch-keystroke --keys="YNyn")
961 echo -n "${retryprompt} " >&6
966 if [ "$(echo "${answer}" | cut -b1 | tr A-Z a-z)" = "n" ]
968 case "${_PLYMOUTH}" in
970 plymouth display-message --text ""
983 blkid -s PART_ENTRY_NAME -p -o value ${dev} 2>/dev/null
990 [ "$(blkid -s PART_ENTRY_SCHEME -p -o value ${dev} 2>/dev/null)" = "gpt" ]
993 probe_for_gpt_name ()
995 local overlays dev gpt_dev gpt_name
1000 if is_active_luks_mapping ${dev}
1002 # if $dev is an opened luks device, we need to check
1003 # GPT stuff on the backing device
1004 gpt_dev=$(get_luks_backing_device "${dev}")
1007 if ! is_gpt_device ${gpt_dev}
1012 gpt_name=$(get_gpt_name ${gpt_dev})
1013 for label in ${overlays}
1015 if [ "${gpt_name}" = "${label}" ]
1017 echo "${label}=${dev}"
1022 probe_for_fs_label ()
1028 for label in ${overlays}
1030 if [ "$(blkid -s LABEL -o value $dev 2>/dev/null)" = "${label}" ]
1032 echo "${label}=${dev}"
1037 probe_for_file_name ()
1039 local overlays dev ret backing
1044 backing="$(mount_persistence_media ${dev} probe)"
1045 if [ -z "${backing}" ]
1050 for label in ${overlays}
1052 path=${backing}/${PERSISTENCE_PATH}/${label}
1056 loopdev=$(setup_loop "${path}" "loop" "/sys/block/loop*")
1057 ret="${ret} ${label}=${loopdev}"
1065 # unmount and remove mountpoint
1066 umount ${backing} > /dev/null 2>&1 || true
1067 rmdir ${backing} > /dev/null 2>&1 || true
1071 probe_for_directory_name ()
1073 local overlays dev ret backing
1078 backing="$(mount_persistence_media ${dev} probe)"
1079 if [ -z "${backing}" ]
1084 for label in ${overlays}
1086 path=${backing}/${PERSISTENCE_PATH}/${label}
1089 # in this case the "device" ends with a "/"
1090 ret="${ret} ${label}=${backing}/${PERSISTENCE_PATH}/${label%%/}/"
1098 # unmount and remove mountpoint
1099 umount ${backing} > /dev/null 2>&1 || true
1100 rmdir ${backing} > /dev/null 2>&1 || true
1104 find_persistence_media ()
1106 # Scans devices for overlays, and returns a whitespace
1107 # separated list of how to use them. Only overlays with a partition
1108 # label or file name in ${overlays} are returned.
1110 # When scanning a LUKS device, the user will be asked to enter the
1111 # passphrase; on failure to enter it, or if no persistence partitions
1112 # or files were found, the LUKS device is closed.
1114 # For all other cases (overlay partition and overlay file) the
1115 # return value is "${label}=${device}", where ${device} a device that
1116 # can mount the content. In the case of an overlay file, the device
1117 # containing the file will remain mounted as a side-effect.
1119 # No devices in ${black_listed_devices} will be scanned, and if
1120 # ${white_list_devices} is non-empty, only devices in it will be
1123 local overlays white_listed_devices ret black_listed_devices
1125 white_listed_devices="${2}"
1129 # The devices that are hosting the actual live rootfs should not be
1130 # used for persistence storage since otherwise you might mount a
1131 # parent directory on top of a sub-directory of the same filesystem
1132 # in one union together.
1134 black_listed_devices=""
1135 for d in /run/live/rootfs/* /run/live/findiso /run/live/fromiso
1137 black_listed_devices="${black_listed_devices} $(what_is_mounted_on d)"
1140 for dev in $(storage_devices "${black_listed_devices}" "${white_listed_devices}")
1142 local result luks_device
1146 # Check if it's a luks device; we'll have to open the device
1147 # in order to probe any filesystem it contains, like we do
1148 # below. activate_custom_mounts() also depends on that any luks
1149 # device already has been opened.
1150 if is_in_comma_sep_list luks ${PERSISTENCE_ENCRYPTION} && is_luks_partition ${dev}
1152 if luks_device=$(open_luks_device "${dev}")
1154 dev="${luks_device}"
1156 # skip $dev since we failed/chose not to open it
1159 elif ! is_in_comma_sep_list none ${PERSISTENCE_ENCRYPTION}
1161 # skip $dev since we don't allow unencrypted storage
1165 # Probe for matching GPT partition names or filesystem labels
1166 if is_in_comma_sep_list filesystem ${PERSISTENCE_STORAGE}
1168 result=$(probe_for_gpt_name "${overlays}" ${dev})
1169 if [ -n "${result}" ]
1171 ret="${ret} ${result}"
1175 result=$(probe_for_fs_label "${overlays}" ${dev})
1176 if [ -n "${result}" ]
1178 ret="${ret} ${result}"
1183 # Probe for files with matching name on mounted partition
1184 if is_in_comma_sep_list file ${PERSISTENCE_STORAGE}
1186 result=$(probe_for_file_name "${overlays}" ${dev})
1187 if [ -n "${result}" ]
1190 loopdevice=${result##*=}
1191 if is_in_comma_sep_list luks ${PERSISTENCE_ENCRYPTION} && is_luks_partition ${loopdevice}
1195 if luksfile=$(open_luks_device "${loopdevice}")
1197 result=${result%%=*}
1198 result="${result}=${luksfile}"
1200 losetup -d $loopdevice
1204 ret="${ret} ${result}"
1209 # Probe for directory with matching name on mounted partition
1210 if is_in_comma_sep_list directory ${PERSISTENCE_STORAGE}
1212 result=$(probe_for_directory_name "${overlays}" ${dev})
1213 if [ -n "${result}" ]
1215 ret="${ret} ${result}"
1220 # Close luks device if it isn't used
1221 if [ -z "${result}" ] && [ -n "${luks_device}" ] && is_active_luks_mapping "${luks_device}"
1223 cryptsetup luksClose "${luks_device}"
1237 for adaptor in /sys/class/net/*
1239 status="$(cat ${adaptor}/iflink)"
1241 if [ "${status}" -eq 2 ]
1243 mac="$(cat ${adaptor}/address)"
1244 mac="$(echo ${mac} | sed 's/:/-/g' | tr '[a-z]' '[A-Z]')"
1251 is_luks_partition ()
1254 cryptsetup isLuks "${device}" 1>/dev/null 2>&1
1257 is_active_luks_mapping ()
1260 cryptsetup status "${device}" 1>/dev/null 2>&1
1263 get_luks_backing_device ()
1266 cryptsetup status ${device} 2> /dev/null | \
1267 awk '{if ($1 == "device:") print $2}'
1272 output_format="${1}"
1276 for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1278 if [ ! -d "${sysblock}" ]; then
1283 if [ "$(cat ${sysblock}/removable)" = "1" ]
1285 if [ -z "${want_usb}" ]
1289 if readlink ${sysblock} | grep -q usb
1296 if [ "${dev_ok}" = "true" ]
1298 case "${output_format}" in
1300 ret="${ret} ${sysblock}"
1303 devname=$(sys2dev "${sysblock}")
1304 ret="${ret} ${devname}"
1313 removable_usb_dev ()
1315 output_format="${1}"
1317 removable_dev "${output_format}" "want_usb"
1320 non_removable_dev ()
1322 output_format="${1}"
1325 for sysblock in $(echo /sys/block/* | tr ' ' '\n' | grep -vE "/(loop|ram|dm-|fd)")
1327 if [ ! -d "${sysblock}" ]; then
1331 if [ "$(cat ${sysblock}/removable)" = "0" ]
1333 case "${output_format}" in
1335 ret="${ret} ${sysblock}"
1338 devname=$(sys2dev "${sysblock}")
1339 ret="${ret} ${devname}"
1350 # create source's directory structure in dest, and recursively
1351 # create symlinks in dest to to all files in source. if mask
1352 # is non-empty, remove mask from all source paths when
1353 # creating links (will be necessary if we change root, which
1354 # live-boot normally does (into $rootmnt)).
1355 local src_dir dest_dir src_transform
1357 # remove multiple /:s and ensure ending on /
1358 src_dir="$(trim_path ${1})/"
1359 dest_dir="$(trim_path ${2})/"
1360 src_transform="${3}"
1362 # This check can only trigger on the inital, non-recursive call since
1363 # we create the destination before recursive calls
1364 if [ ! -d "${dest_dir}" ]
1366 log_warning_msg "Must link_files into a directory"
1370 find "${src_dir}" -mindepth 1 -maxdepth 1 | \
1373 local dest final_src
1374 dest="${dest_dir}$(basename "${src}")"
1377 if [ -z "$(ls -A "${src}")" ]
1381 if [ ! -d "${dest}" ]
1384 chown_ref "${src}" "${dest}"
1385 chmod_ref "${src}" "${dest}"
1387 link_files "${src}" "${dest}" "${src_transform}"
1390 if [ -n "${src_transform}" ]
1392 final_src="$(echo ${final_src} | sed "${src_transform}")"
1394 rm -rf "${dest}" 2> /dev/null
1395 ln -s "${final_src}" "${dest}"
1396 chown_ref "${src}" "${dest}"
1403 local unionmountpoint unionrw unionro
1404 unionmountpoint="${1}" # directory where the union is mounted
1406 unionrw="${1}" # branch where the union changes are stored
1408 unionro="${*}" # space separated list of read-only branches (optional)
1410 case "${UNIONTYPE}" in
1416 unionmountopts="-o noatime,${noxino_opt},dirs=${unionrw}=${rw_opt}"
1417 if [ -n "${unionro}" ]
1419 for rofs in ${unionro}
1421 unionmountopts="${unionmountopts}:${rofs}=${ro_opt}"
1427 # XXX: can unionro be optional? i.e. can overlay skip lowerdir?
1428 if [ -z "${unionro}" ]
1430 panic "overlay needs at least one lower filesystem (read-only branch)."
1432 # Multiple lower layers can now be given using the the colon (":") as a
1433 # separator character between the directory names.
1434 unionro="$(echo ${unionro} | sed -e 's| |:|g')"
1435 # overlayfs requires:
1436 # + a workdir to become mounted
1437 # + workdir and upperdir to reside under the same mount
1438 # + workdir and upperdir to be in separate directories
1439 mkdir -p "${unionrw}/rw"
1440 mkdir -p "${unionrw}/work"
1441 unionmountopts="-o noatime,lowerdir=${unionro},upperdir=${unionrw}/rw,workdir=${unionrw}/work"
1445 mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
1448 get_custom_mounts ()
1450 # Side-effect: leaves $devices with persistence.conf mounted in /run/live/persistence
1451 # Side-effect: prints info to file $custom_mounts
1453 local custom_mounts devices bindings links
1458 bindings="/tmp/bindings.list"
1459 links="/tmp/links.list"
1460 rm -rf ${bindings} ${links} 2> /dev/null
1462 for device in ${devices}
1464 local device_name backing include_list
1465 device_name="$(basename ${device})"
1466 backing=$(mount_persistence_media ${device})
1467 if [ -z "${backing}" ]
1472 if [ -r "${backing}/${persistence_list}" ]
1474 include_list="${backing}/${persistence_list}"
1479 if [ -n "${LIVE_BOOT_DEBUG}" ] && [ -e "${include_list}" ]
1481 cp ${include_list} /run/live/persistence/${persistence_list}.${device_name}
1484 while read dir options # < ${include_list}
1486 if echo ${dir} | grep -qe "^[[:space:]]*\(#.*\)\?$"
1488 # skipping empty or commented lines
1492 if trim_path ${dir} | grep -q -e "^[^/]" -e "^/lib" -e "^/run/live\(/.*\)\?$" -e "^/\(.*/\)\?\.\.\?\(/.*\)\?$"
1494 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."
1498 local opt_source opt_link source full_source full_dest
1501 for opt in $(echo ${options} | tr ',' ' ');
1505 opt_source=${opt#source=}
1513 log_warning_msg "Skipping custom mount with unknown option: ${opt}"
1520 if [ -n "${opt_source}" ]
1522 if echo ${opt_source} | grep -q -e "^/" -e "^\(.*/\)\?\.\.\?\(/.*\)\?$" && [ "${opt_source}" != "." ]
1524 log_warning_msg "Skipping unsafe custom mount with option source=${opt_source}: must be either \".\" (the media root) or a relative path w.r.t. the media root that contains neither comas, nor the special \".\" and \"..\" path components"
1527 source="${opt_source}"
1531 full_source="$(trim_path ${backing}/${source})"
1532 full_dest="$(trim_path ${rootmnt}/${dir})"
1533 if [ -n "${opt_link}" ]
1535 echo "${device} ${full_source} ${full_dest} ${options}" >> ${links}
1537 echo "${device} ${full_source} ${full_dest} ${options}" >> ${bindings}
1539 done < ${include_list}
1542 # We sort the list according to destination so we're sure that
1543 # we won't hide a previous mount. We also ignore duplicate
1544 # destinations in a more or less arbitrary way.
1545 [ -e "${bindings}" ] && sort -k3 -sbu ${bindings} >> ${custom_mounts} && rm ${bindings}
1547 # After all mounts are considered we add symlinks so they
1548 # won't be hidden by some mount.
1549 [ -e "${links}" ] && cat ${links} >> ${custom_mounts} && rm ${links}
1551 # We need to make sure that no two custom mounts have the same sources
1552 # or are nested; if that is the case, too much weird stuff can happen.
1553 local prev_source prev_dest
1554 prev_source="impossible source" # first iteration must not match
1556 # This sort will ensure that a source /a comes right before a source
1557 # /a/b so we only need to look at the previous source
1558 [ -e ${custom_mounts} ] && sort -k2 -b ${custom_mounts} |
1559 while read device source dest options
1561 if echo ${source} | grep -qe "^${prev_source}\(/.*\)\?$"
1563 panic "Two persistence mounts have the same or nested sources: ${source} on ${dest}, and ${prev_source} on ${prev_dest}"
1565 prev_source=${source}
1570 activate_custom_mounts ()
1572 local custom_mounts used_devices
1573 custom_mounts="${1}" # the ouput from get_custom_mounts()
1576 while read device source dest options # < ${custom_mounts}
1578 local opt_bind opt_link opt_union
1582 for opt in $(echo ${options} | tr ',' ' ');
1587 unset opt_link opt_union
1591 unset opt_bind opt_union
1595 unset opt_bind opt_link
1600 if [ -n "$(what_is_mounted_on "${dest}")" ]
1602 if [ "${dest}" = "${rootmnt}" ]
1606 log_warning_msg "Skipping custom mount ${dest}: $(what_is_mounted_on "${dest}") is already mounted there"
1611 if [ ! -d "${dest}" ]
1613 # create the destination and delete existing files in
1614 # its path that are in the way
1616 for dir in $(echo ${dest} | sed -e 's|/\+| |g')
1618 path=$(trim_path ${path}/${dir})
1626 if echo ${path} | grep -qe "^${rootmnt}/*home/[^/]\+"
1628 # if ${dest} is in /home try fixing proper ownership by assuming that the intended user is the first, which is usually the case
1629 # FIXME: this should really be handled by live-config since we don't know for sure which uid a certain user has until then
1630 chown 1000:1000 ${path}
1636 # if ${source} doesn't exist on our persistence media
1637 # we bootstrap it with $dest from the live filesystem.
1638 # this both makes sense and is critical if we're
1639 # dealing with /etc or other system dir.
1640 if [ ! -d "${source}" ]
1642 if [ -n "${PERSISTENCE_READONLY}" ]
1645 elif [ -n "${opt_union}" ] || [ -n "${opt_link}" ]
1647 # unions and don't need to be bootstrapped
1648 # link dirs can't be bootstrapped in a sensible way
1649 mkdir -p "${source}"
1650 chown_ref "${dest}" "${source}"
1651 chmod_ref "${dest}" "${source}"
1652 elif [ -n "${opt_bind}" ]
1654 # ensure that $dest is not copied *into* $source
1655 mkdir -p "$(dirname ${source})"
1656 cp -a "${dest}" "${source}"
1660 # XXX: If CONFIG_AUFS_ROBR is added to the Debian kernel we can
1661 # ignore the loop below and set rootfs_dest_backing=$dest
1662 local rootfs_dest_backing
1663 rootfs_dest_backing=""
1664 if [ -n "${opt_link}" ] || [ -n "${opt_union}" ]
1666 for d in /run/live/rootfs/*
1668 if [ -n "${rootmnt}" ]
1670 fs="${d}/$(echo ${dest} | sed -e "s|${rootmnt}||")"
1676 rootfs_dest_backing="${rootfs_dest_backing} ${fs}"
1681 local cow_dir links_source
1682 if [ -n "${opt_link}" ] && [ -z "${PERSISTENCE_READONLY}" ]
1684 link_files ${source} ${dest} ""
1685 elif [ -n "${opt_link}" ] && [ -n "${PERSISTENCE_READONLY}" ]
1687 mkdir -p /run/live/persistence
1688 links_source=$(mktemp -d /run/live/persistence/links-source-XXXXXX)
1689 chown_ref ${source} ${links_source}
1690 chmod_ref ${source} ${links_source}
1691 # We put the cow dir in the below strange place to
1692 # make it absolutely certain that the link source
1693 # has its own directory and isn't nested with some
1694 # other custom mount (if so that mount's files would
1695 # be linked, causing breakage.
1696 cow_dir="/run/live/overlay/run/live/persistence/$(basename ${links_source})"
1698 chown_ref "${source}" "${cow_dir}"
1699 chmod_ref "${source}" "${cow_dir}"
1700 do_union ${links_source} ${cow_dir} ${source} ${rootfs_dest_backing}
1701 link_files ${links_source} ${dest} "s|^${rootmnt}||"
1702 elif [ -n "${opt_union}" ] && [ -z "${PERSISTENCE_READONLY}" ]
1704 do_union ${dest} ${source} ${rootfs_dest_backing}
1705 elif [ -n "${opt_bind}" ] && [ -z "${PERSISTENCE_READONLY}" ]
1707 mount -o bind "${source}" "${dest}"
1708 elif [ -n "${opt_bind}" -o -n "${opt_union}" ] && [ -n "${PERSISTENCE_READONLY}" ]
1710 # bind-mount and union mount are handled the same
1711 # in read-only mode, but note that rootfs_dest_backing
1712 # is non-empty (and necessary) only for unions
1713 cow_dir="/run/live/overlay/${dest}"
1714 if [ -e "${cow_dir}" ] && [ -z "${opt_link}" ]
1716 # If an earlier custom mount has files here
1717 # it will "block" the current mount's files
1718 # which is undesirable
1722 chown_ref "${source}" "${cow_dir}"
1723 chmod_ref "${source}" "${cow_dir}"
1724 if [ "${UNIONTYPE}" = "overlay" ]
1726 # When we use overlay we add the "/rw" postfix to our source when using it
1727 # as upper layer. Therefore we also have to add it here when using it as
1729 source="${source}/rw"
1731 do_union ${dest} ${cow_dir} ${source} ${rootfs_dest_backing}
1734 PERSISTENCE_IS_ON="1"
1735 export PERSISTENCE_IS_ON
1737 if echo ${used_devices} | grep -qve "^\(.* \)\?${device}\( .*\)\?$"
1739 used_devices="${used_devices} ${device}"
1741 done < ${custom_mounts}
1743 echo ${used_devices}
1750 [ $(stat -fc%d:%D "${directory}") != $(stat -fc%d:%D "${directory}/..") ]