--- /dev/null
+#!/bin/sh
+
+NAME="${0##*/}"
+
+# We're gonna mess with stderr's file descriptor below, so we save a
+# reference to it in fd 3 if we want to print to stderr
+exec 3>&2
+
+error ()
+{
+ echo "error: ${@}" >&3
+ exit 1
+}
+
+if [ "$(id -u)" -ne 0 ]
+then
+ error "need root privileges"
+fi
+
+if ! dpkg -s live-boot >/dev/null 2>&1
+then
+ error "package 'live-boot' must be installed"
+fi
+
+# import Cmdline_old()
+. /lib/live/boot/9990-cmdline-old \
+ || error 'Could not source /lib/live/boot/9990-cmdline-old'
+
+# Set variable names needed by get_custom_mounts() etc.,
+# and now initialized by live-boot in a file that we certainly
+# don't want to source.
+export persistence_list="persistence.conf"
+export old_persistence_list="live-persistence.conf"
+export custom_overlay_label="persistence"
+
+# This will import the following functions and variables used below:
+# activate_custom_mounts()
+# get_custom_mounts()
+# open_luks_device()
+# probe_for_gpt_name()
+# removable_dev()
+# removable_usb_dev()
+# storage_devices()
+# where_is_mounted()
+. /lib/live/boot/9990-misc-helpers.sh \
+ || error 'Could not source /lib/live/boot/9990-misc-helpers.sh'
+
+usage ()
+{
+ echo "Usage: ${NAME} [OPTION]... list [LABEL]...
+List (on stdout) all partitions with names among LABEL(s) that are compatible
+with live-boot's overlay persistence, and that are adhering to live-boot's
+persistence filters (e.g. persistence-media). If no LABEL is given the default
+in live-boot is used ('${custom_overlay_label}').
+ or: ${NAME} [OPTION]... activate VOLUME...
+Activates persistence on the given VOLUME(s) (specified via block device).
+Successes and failures are written to stdout. There are no checks for whether
+the given volumes adhere to live-boot's options.
+ or: ${NAME} [OPTION]... close VOLUME...
+Deactivates persistence on the given VOLUME(s) (specified via block device).
+
+Note: The 'activate' and 'stop' actions only support partition-backed volumes
+(e.g. /dev/sda2), not file-backed persistent volumes.
+
+Kernel command-line options are parsed just like in live-boot and have the same
+effect (see live-boot(7) for more information).
+
+Most options correspond to the persistence-* options of live-boot, and will
+override the corresponging options parsed from the kernel command-line.
+
+General options:
+ -h, --help display this help and exit
+ -l, --log-file=FILE log the execution trace to FILE
+
+Options affecting the 'list' action:
+ -e, --encryption=LIST override 'persistence-encryption'
+ -m, --media=VALUE override 'persistence-media'
+ -g, --gpt-only only list GPT partitions
+
+Options affecting the 'activate' action:
+ -r, --read-only enable 'persistence-read-only'
+ -w, --read-write disable 'persistence-read-only'
+ -u, --union=VALUE override 'union'"
+}
+
+warning ()
+{
+ echo "warning: ${@}" >&3
+}
+
+dbus_udisks_get_attribute ()
+{
+ local dev attribute re
+ dev="${1}"
+ attribute="${2}"
+ re='^[[:space:]]*variant[[:space:]]\+string[[:space:]]\+"\(.*\)"$'
+ dbus-send --system --print-reply --dest=org.freedesktop.UDisks \
+ /org/freedesktop/UDisks/devices/$(basename ${dev}) \
+ org.freedesktop.DBus.Properties.Get \
+ string:org.freedesktop.UDisks.Device \
+ string:"${attribute}" | \
+ grep -e "${re}" | sed "s|${re}|\1|"
+}
+
+# We override the following two functions from live-helpers since old
+# blkid (i.e. util-linux and libblkid1) doesn't support GPT. We use dbus
+# instead (which should be available in user-space).
+get_gpt_name ()
+{
+ local dev
+ dev="${1}"
+ dbus_udisks_get_attribute ${dev} partition-label
+}
+
+is_gpt_device ()
+{
+ local dev
+ dev="${1}"
+ [ "$(dbus_udisks_get_attribute ${dev} partition-scheme)" = "gpt" ]
+}
+
+
+# We override live-boot's logging facilities to get more useful error messages
+log_warning_msg ()
+{
+ warning ${@}
+}
+
+# We override live-boot's panic() since it does a lot of crazy stuff
+panic ()
+{
+ error ${@}
+}
+
+# Fix persistent ~/.gconf sub-dirs; activate_custom_mounts() creates
+# empty dirs up to its mountpoint, but the file %gconf.xml has to be
+# present in each of ~/.gconf's subdirs to make them valid. Hence we
+# have a problem with a persistent ~/.gconf/X/Y if ~/.gconf/X was
+# created by activate_custom_mounts() since it would lack its
+# %gconf.xml file, making ~/.gconf/X/Y invalid. This functions makes
+# sure that all subdirs of ~/.gconf contain %gconf.xml.
+fix_gconf_dirs ()
+{
+ for home in /home/*
+ do
+ if [ ! -e "${home}/.gconf" ]
+ then
+ continue
+ fi
+ local ownership
+ ownership=$(stat -c "%u:%g" "${home}")
+ find "${home}/.gconf" -type d | while IFS="" read -r dir
+ do
+ local conf
+ conf="${dir}/%gconf.xml"
+ if [ ! -e "${conf}" ]; then
+ touch "${conf}"
+ chown ${ownership} "${conf}"
+ fi
+ done
+ done
+}
+
+list_volumes ()
+{
+ local labels whitelistdev
+ labels=${@}
+ whitelistdev=""
+ case "${PERSISTENCE_MEDIA}" in
+ removable)
+ whitelistdev="$(removable_dev)"
+ [ -z "${whitelistdev}" ] && return
+ ;;
+ removable-usb)
+ whitelistdev="$(removable_usb_dev)"
+ [ -z "${whitelistdev}" ] && return
+ ;;
+ *)
+ whitelistdev=""
+ ;;
+ esac
+ volumes=$(find_persistence_media "${labels}" "${whitelistdev}")
+ for vol in $volumes
+ do
+ # drop the "$label=" prefix
+ vol=${vol#*=}
+ if [ -n "${GPT_PARTITIONS_ONLY}" ] && ! is_gpt_device ${vol}
+ then
+ continue
+ fi
+ echo $vol
+ done
+
+ exit 0
+}
+
+activate_volumes ()
+{
+ local volumes ret open_volumes successes failures
+ volumes=${@}
+ ret=0
+ open_volumes=""
+ successes=""
+ failures=""
+
+ # required by open_luks_device()
+ exec 6>&1
+
+ for vol in ${volumes}
+ do
+ if [ ! -b "${vol}" ]
+ then
+ warning "${vol} is not a block device"
+ failures="${failures} ${vol}"
+ ret=1
+ continue
+ fi
+ local luks_vol
+ luks_vol=""
+ if /sbin/cryptsetup isLuks ${vol} >/dev/null
+ then
+ if luks_vol=$(open_luks_device "${vol}")
+ then
+ open_volumes="${open_volumes} ${luks_vol}"
+ else
+ failures="${failures} ${vol}"
+ fi
+ else
+ open_volumes="${open_volumes} ${vol}"
+ fi
+ done
+
+ custom_mounts="$(mktemp /tmp/custom_mounts-XXXXXX.list)"
+ get_custom_mounts ${custom_mounts} ${open_volumes}
+ if [ -s "${custom_mounts}" ]
+ then
+ activate_custom_mounts ${custom_mounts} >/dev/null
+ fix_gconf_dirs
+ fi
+ rm -f ${custom_mounts}
+
+ for vol in ${open_volumes}
+ do
+ if grep -qe "^${vol}\>" /proc/mounts
+ then
+ successes="${successes} ${vol}"
+ else
+ failures="${failures} ${vol}"
+ ret=1
+ fi
+ done
+
+ if [ -n "${successes}" ]
+ then
+ echo "Successes:"
+ for vol in ${successes}
+ do
+ echo " - ${vol}"
+ done
+ fi
+
+ if [ -n "${failures}" ]
+ then
+ echo "Failures:"
+ for vol in ${failures}
+ do
+ echo " - ${vol}"
+ done
+ fi
+ exit ${ret}
+}
+
+is_mounted_readonly ()
+{
+ grep -q "${1} [^ ]* [^ ]* \([^ ]*,\)\?ro\(,[^ ]*\)\?" /proc/mounts
+}
+
+get_readonly_link_dir ()
+{
+ # XXX: Probably only supports UNIONTYPE=aufs
+ mount | grep ":${1}=" | cut -d' ' -f3
+}
+
+close_volumes ()
+{
+ local volumes custom_mounts
+ volumes=${@}
+ custom_mounts="$(mktemp /tmp/custom_mounts-XXXXXX.list)"
+ get_custom_mounts ${custom_mounts} ${volumes}
+ while read device source dest options # < ${custom_mounts}
+ do
+ if is_in_comma_sep_list link ${options}
+ then
+ # 'link' type persistence isn't mounted on
+ # $dest but in read-only mode it has a special
+ # mount we need to take care of. However, in
+ # both cases we just leave all created links
+ # in a broken state.
+ # We can't just check PERSISTENCE_READONLY
+ # since that's something one can change with
+ # the activate action, so we check if $device
+ # is mounted read-only instead.
+ if is_mounted_readonly ${device}
+ then
+ umount "$(get_readonly_link_dir "${source}")"
+ fi
+ else
+ umount ${dest}
+ fi
+ done < ${custom_mounts}
+ rm -f ${custom_mounts}
+ for vol in ${volumes}
+ do
+ local backing
+ backing=$(where_is_mounted ${vol})
+ umount ${backing}
+ done
+}
+
+main ()
+{
+ # tracing get's activated by Cmdline_old() if "debug" is in
+ # /proc/cmdline which will flood stderr, which we don't want
+ exec 2>"/dev/null"
+
+ # parse the kernel cmdline for live-boot's configuration as defaults
+ Cmdline_old
+
+ # disable tracing if enabled by Cmdline_old()
+ set +x
+ exec 2>&3
+
+ export PERSISTENCE="true"
+ export NOPERSISTENCE=""
+
+ # FIXME: we don't yet support file-backed custom persistence
+ export PERSISTENCE_STORAGE="filesystem"
+
+ # Should be set empty since live-boot already changed root for us
+ export rootmnt=""
+
+ SHORTOPTS="e:,g,h,l:,m:,r,w,u:"
+ LONGOPTS="encryption:,gpt-only,help,log-file:,media:,read-only,read-write,union:"
+ OPTS=$(getopt -o ${SHORTOPTS} --longoptions ${LONGOPTS} -n "${NAME}" -- "$@")
+ if [ "$?" -ne 0 ]
+ then
+ echo "Try '${NAME} --help' for more information."
+ exit 1
+ fi
+ eval set -- "$OPTS"
+ while [ $# -gt 0 ]; do
+ case $1 in
+ -e|--encryption)
+ shift
+ export PERSISTENCE_ENCRYPTION="${1}"
+ ;;
+ -g|--gpt-only)
+ GPT_PARTITIONS_ONLY="true"
+ ;;
+ -h|--help)
+ usage
+ exit 0
+ ;;
+ -l|--log-file)
+ shift
+ DEBUG_LOG_FILE="${1}"
+ ;;
+ -m|--media)
+ shift
+ export PERSISTENCE_MEDIA="${1}"
+ ;;
+ -r|--read-only)
+ export PERSISTENCE_READONLY="true"
+ ;;
+ -w|--read-write)
+ export PERSISTENCE_READONLY=""
+ ;;
+ -u|--union)
+ shift
+ export UNIONTYPE="${1}"
+ ;;
+ --)
+ shift
+ break
+ ;;
+ *)
+ error "unrecognized option: ${1}"
+ ;;
+ esac
+ shift
+ done
+
+ if [ -n "${DEBUG_LOG_FILE}" ]
+ then
+ exec 2>"${DEBUG_LOG_FILE}"
+ set -x
+ fi
+
+ local action labels volumes
+ action="${1}"
+ shift
+ case "${action}" in
+ list)
+ labels=${@}
+ if [ -z "${labels}" ]
+ then
+ # use default label in live-boot
+ labels=${custom_overlay_label}
+ fi
+ list_volumes ${labels}
+ ;;
+ activate|close)
+ volumes=${@}
+ if [ -z "${volumes}" ]
+ then
+ error "you must specify at least one volume"
+ fi
+ ${action}_volumes "${volumes}"
+ ;;
+ "")
+ error "no action specified"
+ ;;
+ *)
+ error "unrecognized action: ${action}"
+ ;;
+ esac
+}
+
+main "${@}"
live-systems.org/gitweb / live-tools.git / commitdiff