+# Create /etc/mtab for debug purpose and future syncs
+if [ ! -d /etc ]
+then
+ mkdir /etc/
+fi
+
+if [ ! -f /etc/mtab ]
+then
+ touch /etc/mtab
+fi
+
+. /scripts/live-helpers
+
+if [ ! -f /live.vars ]
+then
+ touch /live.vars
+fi
+
+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 ${sysfs_path} | grep -q "^/block/mtdblock"
+ then
+ return 0
+ fi
+
+ return 1
+}
+
+copy_live_to ()
+{
+ copyfrom="${1}"
+ copytodev="${2}"
+ copyto="${copyfrom}_swap"
+
+ if [ -z "${MODULETORAM}" ]
+ then
+ size=$(fs_size "" ${copyfrom}/${LIVE_MEDIA_PATH} "used")
+ else
+ MODULETORAMFILE="${copyfrom}/${LIVE_MEDIA_PATH}/${MODULETORAM}"
+
+ if [ -f "${MODULETORAMFILE}" ]
+ then
+ size=$( expr $(ls -la ${MODULETORAMFILE} | awk '{print $5}') / 1024 + 5000 )
+ else
+ log_warning_msg "Error: toram-module ${MODULETORAM} (${MODULETORAMFILE}) could not be read."
+ return 1
+ fi
+ fi
+
+ if [ "${copytodev}" = "ram" ]
+ then
+ # copying to ram:
+ freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
+ mount_options="-o size=${size}k"
+ free_string="memory"
+ fstype="tmpfs"
+ dev="/dev/shm"
+ else
+ # it should be a writable block device
+ if [ -b "${copytodev}" ]
+ then
+ dev="${copytodev}"
+ free_string="space"
+ fstype=$(get_fstype "${dev}")
+ freespace=$(fs_size "${dev}")
+ else
+ log_warning_msg "${copytodev} is not a block device."
+ return 1
+ fi
+ fi
+
+ if [ "${freespace}" -lt "${size}" ]
+ then
+ log_warning_msg "Not enough free ${free_string} (${freespace}k free, ${size}k needed) to copy live media in ${copytodev}."
+ return 1
+ fi
+
+ # Custom ramdisk size
+ if [ -z "${mount_options}" ] && [ -n "${ramdisk_size}" ]
+ then
+ # FIXME: should check for wrong values
+ mount_options="-o size=${ramdisk_size}"
+ fi
+
+ # begin copying (or uncompressing)
+ mkdir "${copyto}"
+ log_begin_msg "mount -t ${fstype} ${mount_options} ${dev} ${copyto}"
+ mount -t "${fstype}" ${mount_options} "${dev}" "${copyto}"
+
+ if [ "${extension}" = "tgz" ]
+ then
+ cd "${copyto}"
+ tar zxf "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
+ rm -f "${copyfrom}/${LIVE_MEDIA_PATH}/$(basename ${FETCH})"
+ mount -r -o move "${copyto}" "${rootmnt}"
+ cd "${OLDPWD}"
+ else
+ if [ -n "${MODULETORAMFILE}" ]
+ then
+ if [ -x /bin/rsync ]
+ then
+ echo " * Copying $MODULETORAMFILE to RAM" 1>/dev/console
+ rsync -a --progress ${MODULETORAMFILE} ${copyto} 1>/dev/console # copy only the filesystem module
+ else
+ cp ${MODULETORAMFILE} ${copyto} # copy only the filesystem module
+ fi
+ else
+ if [ -x /bin/rsync ]
+ then
+ echo " * Copying whole medium to RAM" 1>/dev/console
+ rsync -a --progress ${copyfrom}/* ${copyto} 1>/dev/console # "cp -a" from busybox also copies hidden files
+ else
+ mkdir -p ${copyto}/${LIVE_MEDIA_PATH}
+ cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/* ${copyto}/${LIVE_MEDIA_PATH}
+ if [ -e ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ]
+ then
+ cp -a ${copyfrom}/${LIVE_MEDIA_PATH}/.disk ${copyto}
+ fi
+ fi
+ fi
+
+ umount ${copyfrom}
+ mount -r -o move ${copyto} ${copyfrom}
+ fi
+
+ rmdir ${copyto}
+ return 0
+}
+
+do_netsetup ()
+{
+ modprobe -q af_packet # For DHCP
+
+ udevadm trigger
+ udevadm settle
+
+ [ -n "$ETHDEV_TIMEOUT" ] || ETHDEV_TIMEOUT=15
+ echo "Using timeout of $ETHDEV_TIMEOUT seconds for network configuration."
+
+ if [ -z "${NETBOOT}" ] && [ -z "${FETCH}" ] && \
+ [ -z "${HTTPFS}" ] && [ -z "${FTPFS}" ]
+ then
+
+
+ # support for Syslinux IPAPPEND parameter
+ # it sets the BOOTIF variable on the kernel parameter
+
+ if [ -n "${BOOTIF}" ]
+ then
+ # pxelinux sets BOOTIF to a value based on the mac address of the
+ # network card used to PXE boot, so use this value for DEVICE rather
+ # than a hard-coded device name from initramfs.conf. this facilitates
+ # network booting when machines may have multiple network cards.
+ # pxelinux sets BOOTIF to 01-$mac_address
+
+ # strip off the leading "01-", which isn't part of the mac
+ # address
+ temp_mac=${BOOTIF#*-}
+
+ # convert to typical mac address format by replacing "-" with ":"
+ bootif_mac=""
+ IFS='-'
+ for x in $temp_mac
+ do
+ if [ -z "$bootif_mac" ]
+ then
+ bootif_mac="$x"
+ else
+ bootif_mac="$bootif_mac:$x"
+ fi
+ done
+ unset IFS
+
+ # look for devices with matching mac address, and set DEVICE to
+ # appropriate value if match is found.
+
+ for device in /sys/class/net/*
+ do
+ if [ -f "$device/address" ]
+ then
+ current_mac=$(cat "$device/address")
+
+ if [ "$bootif_mac" = "$current_mac" ]
+ then
+ DEVICE=${device##*/}
+ break
+ fi
+ fi
+ done
+ fi
+
+ # if ethdevice was not specified on the kernel command line
+ # make sure we try to get a working network configuration
+ # for *every* present network device (except for loopback of course)
+ if [ -z "$ETHDEVICE" ] ; then
+ echo "If you want to boot from a specific device use bootoption ethdevice=..."
+ for device in /sys/class/net/*; do
+ dev=${device##*/} ;
+ if [ "$dev" != "lo" ] ; then
+ ETHDEVICE="$ETHDEVICE $dev"
+ fi
+ done
+ fi
+
+ # split args of ethdevice=eth0,eth1 into "eth0 eth1"
+ for device in $(echo $ETHDEVICE | sed 's/,/ /g') ; do
+ devlist="$devlist $device"
+ done
+
+ # this is tricky (and ugly) because ipconfig sometimes just hangs/runs into
+ # an endless loop; iff execution fails give it two further tries, that's
+ # why we use '$devlist $devlist $devlist' for the other for loop
+ for dev in $devlist $devlist $devlist ; do
+ echo "Executing ipconfig -t $ETHDEV_TIMEOUT $dev"
+ ipconfig -t "$ETHDEV_TIMEOUT" $dev | tee -a /netboot.config &
+ jobid=$!
+ sleep "$ETHDEV_TIMEOUT" ; sleep 1
+ if [ -r /proc/"$jobid"/status ] ; then
+ echo "Killing job $jobid for device $dev as ipconfig ran into recursion..."
+ kill -9 $jobid
+ fi
+
+ # if configuration of device worked we should have an assigned
+ # IP address, iff so let's use the according as $DEVICE for later usage
+ # simple and primitive approach which seems to work fine
+ if ifconfig $dev | grep -q 'inet.*addr:' ; then
+ export DEVICE="$dev"
+ break
+ fi
+ done
+
+ else
+ for interface in ${DEVICE}; do
+ ipconfig -t "$ETHDEV_TIMEOUT" ${interface} | tee /netboot-${interface}.config
+ [ -e /tmp/net-${interface}.conf ] && . /tmp/net-${interface}.conf
+ if [ "$IPV4ADDR" != "0.0.0.0" ]
+ then
+ break
+ fi
+ done
+ fi
+
+ for interface in ${DEVICE}; do
+ # source relevant ipconfig output
+ OLDHOSTNAME=${HOSTNAME}
+ [ -e /tmp/net-${interface}.conf ] && . /tmp/net-${interface}.conf
+ [ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
+ export HOSTNAME
+
+ if [ -n "${interface}" ]
+ then
+ HWADDR="$(cat /sys/class/net/${interface}/address)"
+ fi
+
+ if [ ! -e "/etc/resolv.conf" ]
+ then
+ echo "Creating /etc/resolv.conf"
+
+ if [ -n "${DNSDOMAIN}" ]
+ then
+ echo "domain ${DNSDOMAIN}" > /etc/resolv.conf
+ echo "search ${DNSDOMAIN}" >> /etc/resolv.conf
+ fi
+
+ for i in ${IPV4DNS0} ${IPV4DNS1} ${IPV4DNS1}
+ do
+ if [ -n "$i" ] && [ "$i" != 0.0.0.0 ]
+ then
+ echo "nameserver $i" >> /etc/resolv.conf
+ fi
+ done
+ fi
+
+ # Check if we have a network device at all
+ if ! ls /sys/class/net/"$interface" > /dev/null 2>&1 && \
+ ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
+ ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
+ ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
+ ! ls /sys/class/net/ra0 > /dev/null 2>&1
+ then
+ panic "No supported network device found, maybe a non-mainline driver is required."
+ fi
+ done
+}
+
+do_netmount()
+{
+ do_netsetup
+
+ if [ "${NFSROOT}" = "auto" ]
+ then
+ NFSROOT=${ROOTSERVER}:${ROOTPATH}
+ fi
+
+ rc=1
+
+ if ( [ -n "${FETCH}" ] || [ -n "${HTTPFS}" ] || [ -n "${FTPFS}" ] )
+ then
+ do_httpmount
+ return $?
+ fi
+
+ if [ "${NFSROOT#*:}" = "${NFSROOT}" ] && [ "$NETBOOT" != "cifs" ]
+ then
+ NFSROOT=${ROOTSERVER}:${NFSROOT}
+ fi
+
+ log_begin_msg "Trying netboot from ${NFSROOT}"
+
+ if [ "${NETBOOT}" != "nfs" ] && do_cifsmount
+ then
+ rc=0
+ elif do_nfsmount
+ then
+ NETBOOT="nfs"
+ export NETBOOT
+ rc=0
+ fi
+
+ log_end_msg
+ return ${rc}
+}
+
+do_iscsi()
+{
+ do_netsetup
+ #modprobe ib_iser
+ modprobe iscsi_tcp
+ local debugopt=""
+ [ "${DEBUG}" = "Yes" ] && debugopt="-d 8"
+ #FIXME this name is supposed to be unique - some date + ifconfig hash?
+ ISCSI_INITIATORNAME="iqn.1993-08.org.debian.live:01:$(echo "${HWADDR}" | sed -e s/://g)"
+ export ISCSI_INITIATORNAME
+ if [ -n "${ISCSI_SERVER}" ] ; then
+ iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_SERVER}" -p "${ISCSI_PORT}"
+ else
+ iscsistart $debugopt -i "${ISCSI_INITIATORNAME}" -t "${ISCSI_TARGET}" -g 1 -a "${ISCSI_PORTAL}" -p 3260
+ fi
+ if [ $? != 0 ]
+ then
+ panic "Failed to log into iscsi target"
+ fi
+ local host="$(ls -d /sys/class/scsi_host/host*/device/iscsi_host:host* \
+ /sys/class/scsi_host/host*/device/iscsi_host/host* | sed -e 's:/device.*::' -e 's:.*host::')"
+ if [ -n "${host}" ]
+ then
+ local devices=""
+ local i=0
+ while [ -z "${devices}" -a $i -lt 60 ]
+ do
+ sleep 1
+ devices="$(ls -d /sys/class/scsi_device/${host}*/device/block:* \
+ /sys/class/scsi_device/${host}*/device/block/* | sed -e 's!.*[:/]!!')"
+ i=$(expr $i + 1)
+ echo -ne $i\\r
+ done
+ for dev in $devices
+ do
+ if check_dev "null" "/dev/$dev"
+ then
+ NETBOOT="iscsi"
+ export NETBOOT
+ return 0;
+ fi
+ done
+ panic "Failed to locate a live device on iSCSI devices (tried: $devices)."
+ else
+ panic "Failed to locate iSCSI host in /sys"
+ fi
+}
+
+do_httpmount ()
+{
+ rc=1
+
+ for webfile in HTTPFS FTPFS FETCH
+ do
+ local url="$(eval echo \"\$\{${webfile}\}\")"
+ local extension="$(echo "${url}" | sed 's/\(.*\)\.\(.*\)/\2/')"
+
+ if [ -n "$url" ]
+ then
+ case "${extension}" in
+ iso|squashfs|tgz|tar)
+ if [ "${extension}" = "iso" ]
+ then
+ mkdir -p "${alt_mountpoint}"
+ dest="${alt_mountpoint}"
+ else
+ local dest="${mountpoint}/${LIVE_MEDIA_PATH}"
+ mount -t ramfs ram "${mountpoint}"
+ mkdir -p "${dest}"
+ fi
+ if [ "${webfile}" = "FETCH" ]
+ then
+ case "$url" in
+ tftp*)
+ ip="$(dirname $url | sed -e 's|tftp://||g' -e 's|/.*$||g')"
+ rfile="$(echo $url | sed -e "s|tftp://$ip||g")"
+ lfile="$(basename $url)"
+ log_begin_msg "Trying tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip"
+ tftp -g -b 10240 -r $rfile -l ${dest}/$lfile $ip
+ ;;
+
+ *)
+ log_begin_msg "Trying wget ${url} -O ${dest}/$(basename ${url})"
+ wget "${url}" -O "${dest}/$(basename ${url})"
+ ;;
+ esac
+ else
+ log_begin_msg "Trying to mount ${url} on ${dest}/$(basename ${url})"
+ if [ "${webfile}" = "FTPFS" ]
+ then
+ FUSE_MOUNT="curlftpfs"
+ url="$(dirname ${url})"
+ else
+ FUSE_MOUNT="httpfs"
+ fi
+ modprobe fuse
+ $FUSE_MOUNT "${url}" "${dest}"
+ ROOT_PID="$(minips h -C "$FUSE_MOUNT" | { read x y ; echo "$x" ; } )"
+ fi
+ [ ${?} -eq 0 ] && rc=0
+ [ "${extension}" = "tgz" ] && live_dest="ram"
+ if [ "${extension}" = "iso" ]
+ then
+ isoloop=$(setup_loop "${dest}/$(basename "${url}")" "loop" "/sys/block/loop*" "" '')
+ mount -t iso9660 "${isoloop}" "${mountpoint}"
+ rc=${?}
+ fi
+ break
+ ;;
+
+ *)
+ log_begin_msg "Unrecognized archive extension for ${url}"
+ ;;
+ esac
+ fi
+ done
+
+ if [ ${rc} != 0 ]
+ then
+ if [ -d "${alt_mountpoint}" ]
+ then
+ umount "${alt_mountpoint}"
+ rmdir "${alt_mountpoint}"
+ fi
+ umount "${mountpoint}"
+ elif [ "${webfile}" != "FETCH" ] ; then
+ NETBOOT="${webfile}"
+ export NETBOOT
+ fi
+
+ return ${rc}
+}
+
+do_nfsmount ()
+{
+ rc=1
+
+ modprobe -q nfs
+
+ if [ -n "${NFSOPTS}" ]
+ then
+ NFSOPTS="-o ${NFSOPTS}"
+ fi
+
+ log_begin_msg "Trying nfsmount -o nolock -o ro ${NFSOPTS} ${NFSROOT} ${mountpoint}"
+
+ # FIXME: This while loop is an ugly HACK round an nfs bug
+ i=0
+ while [ "$i" -lt 60 ]
+ do
+ nfsmount -o nolock -o ro ${NFSOPTS} "${NFSROOT}" "${mountpoint}" && rc=0 && break
+ sleep 1
+ i="$(($i + 1))"
+ done
+
+ return ${rc}
+}
+
+do_cifsmount ()
+{
+ rc=1
+
+ if [ -x "/sbin/mount.cifs" ]
+ then
+ if [ -z "${NFSOPTS}" ]
+ then
+ CIFSOPTS="-ouser=root,password="
+ else
+ CIFSOPTS="-o ${NFSOPTS}"
+ fi
+
+ log_begin_msg "Trying mount.cifs ${NFSROOT} ${mountpoint} ${CIFSOPTS}"
+ modprobe -q cifs
+
+ if mount.cifs "${NFSROOT}" "${mountpoint}" "${CIFSOPTS}"
+ then
+ rc=0
+ fi
+ fi
+
+ return ${rc}
+}
+
+do_snap_copy ()
+{
+ fromdev="${1}"
+ todir="${2}"
+ snap_type="${3}"
+ size=$(fs_size "${fromdev}" "" "used")
+
+ if [ -b "${fromdev}" ]
+ then
+ log_success_msg "Copying snapshot ${fromdev} to ${todir}..."
+
+ # look for free mem
+ if [ -n "${HOMEMOUNTED}" -a "${snap_type}" = "HOME" ]
+ then
+ todev=$(awk -v pat="$(base_path ${todir})" '$2 == pat { print $1 }' /proc/mounts)
+ freespace=$(df -k | awk '/'${todev}'/{print $4}')
+ else
+ freespace=$(awk '/^MemFree:/{f=$2} /^Cached:/{c=$2} END{print f+c}' /proc/meminfo)
+ fi
+
+ tomount="/mnt/tmpsnap"
+
+ if [ ! -d "${tomount}" ]
+ then
+ mkdir -p "${tomount}"
+ fi
+
+ fstype=$(get_fstype "${fromdev}")
+
+ if [ -n "${fstype}" ]
+ then
+ # Copying stuff...
+ mount -o ro -t "${fstype}" "${fromdev}" "${tomount}" || log_warning_msg "Error in mount -t ${fstype} -o ro ${fromdev} ${tomount}"
+ cp -a "${tomount}"/* ${todir}
+ umount "${tomount}"
+ else
+ log_warning_msg "Unrecognized fstype: ${fstype} on ${fromdev}:${snap_type}"
+ fi
+
+ rmdir "${tomount}"
+
+ if echo ${fromdev} | grep -qs loop
+ then
+ losetup -d "${fromdev}"
+ fi
+
+ return 0
+ else
+ log_warning_msg "Unable to find the snapshot ${snap_type} medium"
+ return 1
+ fi
+}
+
+try_snap ()
+{
+ # copy the contents of previously found snapshot to ${snap_mount}
+ # and remember the device and filename for resync on exit in live-boot.init
+
+ snapdata="${1}"
+ snap_mount="${2}"
+ snap_type="${3}"
+ snap_relpath="${4}"
+
+ if [ -z "${snap_relpath}" ]
+ then
+ # root snapshot, default usage
+ snap_relpath="/"
+ else
+ # relative snapshot (actually used just for "/home" snapshots)
+ snap_mount="${2}${snap_relpath}"
+ fi
+
+ if [ -n "${snapdata}" ] && [ ! -b "${snapdata}" ]
+ then
+ log_success_msg "found snapshot: ${snapdata}"
+ snapdev="$(echo ${snapdata} | cut -f1 -d ' ')"
+ snapback="$(echo ${snapdata} | cut -f2 -d ' ')"
+ snapfile="$(echo ${snapdata} | cut -f3 -d ' ')"
+
+ if ! try_mount "${snapdev}" "${snapback}" "ro"
+ then
+ break
+ fi
+
+ RES="0"
+
+ if echo "${snapfile}" | grep -qs '\(squashfs\|ext2\|ext3\|ext4\|jffs2\)'
+ then
+ # squashfs, jffs2 or ext2/ext3/ext4 snapshot
+ dev=$(get_backing_device "${snapback}/${snapfile}")
+
+ do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
+ RES="$?"
+ else
+ # cpio.gz snapshot
+
+ # Unfortunately klibc's cpio is incompatible with the
+ # rest of the world; everything else requires -u -d,
+ # while klibc doesn't implement them. Try to detect
+ # whether it's in use.
+ cpiopath="$(which cpio)" || true
+ if [ "$cpiopath" ] && grep -aq /lib/klibc "$cpiopath"
+ then
+ cpioargs=
+ else
+ cpioargs='--unconditional --make-directories'
+ fi
+
+ if [ -s "${snapback}/${snapfile}" ]
+ then
+ BEFOREDIR="$(pwd)"
+ cd "${snap_mount}" && zcat "${snapback}/${snapfile}" | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse 2>/dev/null
+ RES="$?"
+ cd "${BEFOREDIR}"
+ else
+ log_warning_msg "${snapback}/${snapfile} is empty, adding it for sync on reboot."
+ RES="0"
+ fi
+
+ if [ "${RES}" != "0" ]
+ then
+ log_warning_msg "failure to \"zcat ${snapback}/${snapfile} | $cpiopath $cpioargs --extract --preserve-modification-time --no-absolute-filenames --sparse\""
+ fi
+ fi
+
+ umount "${snapback}" || log_warning_msg "failure to \"umount ${snapback}\""
+
+ if [ "${RES}" != "0" ]
+ then
+ log_warning_msg "Impossible to include the ${snapfile} Snapshot file"
+ fi
+
+ elif [ -b "${snapdata}" ]
+ then
+ # Try to find if it could be a snapshot partition
+ dev="${snapdata}"
+ log_success_msg "found snapshot ${snap_type} device on ${dev}"
+ if echo "${dev}" | grep -qs loop
+ then
+ # strange things happens, user confused?
+ snaploop=$( losetup ${dev} | awk '{print $3}' | tr -d '()' )
+ snapfile=$(basename ${snaploop})
+ snapdev=$(awk -v pat="$( dirname ${snaploop})" '$2 == pat { print $1 }' /proc/mounts)
+ else
+ snapdev="${dev}"
+ fi
+
+ if ! do_snap_copy "${dev}" "${snap_mount}" "${snap_type}"
+ then
+ log_warning_msg "Impossible to include the ${snap_type} Snapshot (i)"
+ return 1
+ else
+ if [ -n "${snapfile}" ]
+ then
+ # it was a loop device, user confused
+ umount ${snapdev}
+ fi
+ fi
+ else
+ log_warning_msg "Impossible to include the ${snap_type} Snapshot (o)"
+ return 1
+ fi
+
+ if [ -z ${PERSISTENCE_READONLY} ]
+ then
+ echo "export ${snap_type}SNAP=${snap_relpath}:${snapdev}:${snapfile}" >> snapshot.conf # for resync on reboot/halt
+ fi
+ return 0
+}
+
+setup_unionfs ()
+{
+ image_directory="${1}"
+ rootmnt="${2}"
+ addimage_directory="${3}"
+
+ case ${UNIONTYPE} in
+ aufs|unionfs|overlayfs)
+ modprobe -q -b ${UNIONTYPE}
+
+ if ! cut -f2 /proc/filesystems | grep -q "^${UNIONTYPE}\$" && [ -x /bin/unionfs-fuse ]
+ then
+ echo "${UNIONTYPE} not available, falling back to unionfs-fuse."
+ echo "This might be really slow."
+
+ UNIONTYPE="unionfs-fuse"
+ fi
+ ;;
+ esac
+
+ if [ "${UNIONTYPE}" = unionfs-fuse ]
+ then
+ modprobe fuse
+ fi
+
+ # run-init can't deal with images in a subdir, but we're going to
+ # move all of these away before it runs anyway. No, we're not,
+ # put them in / since move-mounting them into / breaks mono and
+ # some other apps.
+
+ croot="/"
+
+ # Let's just mount the read-only file systems first
+ rofslist=""
+
+ if [ -z "${PLAIN_ROOT}" ]
+ then
+ # Read image names from ${MODULE}.module if it exists
+ if [ -e "${image_directory}/filesystem.${MODULE}.module" ]
+ then
+ for IMAGE in $(cat ${image_directory}/filesystem.${MODULE}.module)
+ do
+ image_string="${image_string} ${image_directory}/${IMAGE}"
+ done
+ elif [ -e "${image_directory}/${MODULE}.module" ]
+ then
+ for IMAGE in $(cat ${image_directory}/${MODULE}.module)
+ do
+ image_string="${image_string} ${image_directory}/${IMAGE}"
+ done
+ else
+ # ${MODULE}.module does not exist, create a list of images
+ for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
+ do
+ for IMAGE in "${image_directory}"/*."${FILESYSTEM}"
+ do
+ if [ -e "${IMAGE}" ]
+ then
+ image_string="${image_string} ${IMAGE}"
+ fi
+ done
+ done
+
+ if [ -n "${addimage_directory}" ] && [ -d "${addimage_directory}" ]
+ then
+ for FILESYSTEM in squashfs ext2 ext3 ext4 xfs jffs2 dir
+ do
+ for IMAGE in "${addimage_directory}"/*."${FILESYSTEM}"
+ do
+ if [ -e "${IMAGE}" ]
+ then
+ image_string="${image_string} ${IMAGE}"
+ fi
+ done
+ done
+ fi
+
+ # Now sort the list
+ image_string="$(echo ${image_string} | sed -e 's/ /\n/g' | sort )"
+ fi
+
+ [ -n "${MODULETORAMFILE}" ] && image_string="${image_directory}/$(basename ${MODULETORAMFILE})"
+
+ mkdir -p "${croot}"
+
+ for image in ${image_string}
+ do
+ imagename=$(basename "${image}")
+
+ export image devname
+ maybe_break live-realpremount
+ log_begin_msg "Running /scripts/live-realpremount"
+ run_scripts /scripts/live-realpremount
+ log_end_msg
+
+ if [ -d "${image}" ]
+ then
+ # it is a plain directory: do nothing
+ rofslist="${image} ${rofslist}"
+ elif [ -f "${image}" ]
+ then
+ if losetup --help 2>&1 | grep -q -- "-r\b"
+ then
+ backdev=$(get_backing_device "${image}" "-r")
+ else
+ backdev=$(get_backing_device "${image}")
+ fi
+ fstype=$(get_fstype "${backdev}")
+
+ if [ "${fstype}" = "unknown" ]
+ then
+ panic "Unknown file system type on ${backdev} (${image})"
+ fi
+
+ if [ -z "${fstype}" ]
+ then
+ fstype="${imagename##*.}"
+ log_warning_msg "Unknown file system type on ${backdev} (${image}), assuming ${fstype}."
+ fi
+
+ if [ "${UNIONTYPE}" != "unionmount" ]
+ then
+ mpoint="${croot}/${imagename}"
+ rofslist="${mpoint} ${rofslist}"
+ else
+ mpoint="${rootmnt}"
+ rofslist="${rootmnt} ${rofslist}"
+ fi
+ mkdir -p "${mpoint}"
+ log_begin_msg "Mounting \"${image}\" on \"${mpoint}\" via \"${backdev}\""
+ mount -t "${fstype}" -o ro,noatime "${backdev}" "${mpoint}" || panic "Can not mount ${backdev} (${image}) on ${mpoint}"
+ log_end_msg
+ fi
+ done
+ else
+ # we have a plain root system
+ mkdir -p "${croot}/filesystem"
+ log_begin_msg "Mounting \"${image_directory}\" on \"${croot}/filesystem\""
+ mount -t $(get_fstype "${image_directory}") -o ro,noatime "${image_directory}" "${croot}/filesystem" || \
+ panic "Can not mount ${image_directory} on ${croot}/filesystem" && \
+ rofslist="${croot}/filesystem ${rofslist}"
+ # probably broken:
+ mount -o bind ${croot}/filesystem $mountpoint
+ log_end_msg
+ fi