old_root_overlay_label="live-rw"
old_home_overlay_label="home-rw"
custom_overlay_label="custom-ov"
-root_snapshot_label="live-sn"
-old_root_snapshot_label="live-sn"
-home_snapshot_label="home-sn"
persistence_list="live-persistence.conf"
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 ${sysfs_path} | grep -q "^/block/mtdblock"
- then
- return 0
- fi
-
- return 1
-}
-
-check_dev ()
-{
- sysdev="${1}"
- devname="${2}"
- skip_uuid_check="${3}"
-
- # support for fromiso=.../isofrom=....
- if [ -n "$FROMISO" ]
- then
- ISO_DEVICE=$(dirname $FROMISO)
- if ! [ -b $ISO_DEVICE ]
- then
- # to support unusual device names like /dev/cciss/c0d0p1
- # as well we have to identify the block device name, let's
- # do that for up to 15 levels
- i=15
- while [ -n "$ISO_DEVICE" ] && [ "$i" -gt 0 ]
- do
- ISO_DEVICE=$(dirname ${ISO_DEVICE})
- [ -b "$ISO_DEVICE" ] && break
- i=$(($i -1))
- done
- fi
-
- if [ "$ISO_DEVICE" = "/" ]
- then
- echo "Warning: device for bootoption fromiso= ($FROMISO) not found.">>/boot.log
- else
- fs_type=$(get_fstype "${ISO_DEVICE}")
- if is_supported_fs ${fs_type}
- then
- mkdir /live/fromiso
- mount -t $fs_type "$ISO_DEVICE" /live/fromiso
- ISO_NAME="$(echo $FROMISO | sed "s|$ISO_DEVICE||")"
- loopdevname=$(setup_loop "/live/fromiso/${ISO_NAME}" "loop" "/sys/block/loop*" "" '')
- devname="${loopdevname}"
- else
- echo "Warning: unable to mount $ISO_DEVICE." >>/boot.log
- fi
- fi
- fi
-
- if [ -z "${devname}" ]
- then
- devname=$(sys2dev "${sysdev}")
- fi
-
- if [ -d "${devname}" ]
- then
- mount -o bind "${devname}" $mountpoint || continue
-
- if is_live_path $mountpoint
- then
- echo $mountpoint
- return 0
- else
- umount $mountpoint
- fi
- fi
-
- IFS=","
- for device in ${devname}
- do
- case "$device" in
- *mapper*)
- # Adding lvm support
- if [ -x /scripts/local-top/lvm2 ]
- then
- ROOT="$device" resume="" /scripts/local-top/lvm2
- fi
- ;;
-
- /dev/md*)
- # Adding raid support
- if [ -x /scripts/local-top/mdadm ]
- then
- cp /conf/conf.d/md /conf/conf.d/md.orig
- echo "MD_DEVS=$device " >> /conf/conf.d/md
- /scripts/local-top/mdadm
- mv /conf/conf.d/md.orig /conf/conf.d/md
- fi
- ;;
- esac
- done
- unset IFS
-
- [ -n "$device" ] && devname="$device"
-
- [ -e "$devname" ] || continue
-
- if [ -n "${LIVE_MEDIA_OFFSET}" ]
- then
- loopdevname=$(setup_loop "${devname}" "loop" "/sys/block/loop*" "${LIVE_MEDIA_OFFSET}" '')
- devname="${loopdevname}"
- fi
-
- fstype=$(get_fstype "${devname}")
-
- if is_supported_fs ${fstype}
- then
- devuid=$(blkid -o value -s UUID "$devname")
- [ -n "$devuid" ] && grep -qs "\<$devuid\>" $tried && continue
- mount -t ${fstype} -o ro,noatime "${devname}" ${mountpoint} || continue
- [ -n "$devuid" ] && echo "$devuid" >> $tried
-
- if [ -n "${FINDISO}" ]
- then
- if [ -f ${mountpoint}/${FINDISO} ]
- then
- umount ${mountpoint}
- mkdir -p /live/findiso
- mount -t ${fstype} -o ro,noatime "${devname}" /live/findiso
- loopdevname=$(setup_loop "/live/findiso/${FINDISO}" "loop" "/sys/block/loop*" 0 "")
- devname="${loopdevname}"
- mount -t iso9660 -o ro,noatime "${devname}" ${mountpoint}
- else
- umount ${mountpoint}
- fi
- fi
-
- if is_live_path ${mountpoint} && \
- ([ "${skip_uuid_check}" ] || matches_uuid ${mountpoint})
- then
- echo ${mountpoint}
- return 0
- else
- umount ${mountpoint} 2>/dev/null
- fi
- fi
-
- if [ -n "${LIVE_MEDIA_OFFSET}" ]
- then
- losetup -d "${loopdevname}"
- fi
-
- return 1
-}
-
-find_livefs ()
-{
- timeout="${1}"
-
- # don't start autodetection before timeout has expired
- if [ -n "${LIVE_MEDIA_TIMEOUT}" ]
- then
- if [ "${timeout}" -lt "${LIVE_MEDIA_TIMEOUT}" ]
- then
- return 1
- fi
- fi
-
- # first look at the one specified in the command line
- case "${LIVE_MEDIA}" in
- removable-usb)
- for sysblock in $(removable_usb_dev "sys")
- do
- for dev in $(subdevices "${sysblock}")
- do
- if check_dev "${dev}"
- then
- return 0
- fi
- done
- done
- return 1
- ;;
-
- removable)
- for sysblock in $(removable_dev "sys")
- do
- for dev in $(subdevices "${sysblock}")
- do
- if check_dev "${dev}"
- then
- return 0
- fi
- done
- done
- return 1
- ;;
-
- *)
- if [ ! -z "${LIVE_MEDIA}" ]
- then
- if check_dev "null" "${LIVE_MEDIA}" "skip_uuid_check"
- then
- return 0
- fi
- fi
- ;;
- esac
-
- # or do the scan of block devices
- # prefer removable devices over non-removable devices, so scan them first
- devices_to_scan="$(removable_dev 'sys') $(non_removable_dev 'sys')"
-
- for sysblock in $devices_to_scan
- do
- devname=$(sys2dev "${sysblock}")
- [ -e "$devname" ] || continue
- fstype=$(get_fstype "${devname}")
-
- if /lib/udev/cdrom_id ${devname} > /dev/null
- then
- if check_dev "null" "${devname}"
- then
- return 0
- fi
- elif is_nice_device "${sysblock}"
- then
- for dev in $(subdevices "${sysblock}")
- do
- if check_dev "${dev}"
- then
- return 0
- fi
- done
- elif [ "${fstype}" = "squashfs" -o \
- "${fstype}" = "btrfs" -o \
- "${fstype}" = "ext2" -o \
- "${fstype}" = "ext3" -o \
- "${fstype}" = "ext4" -o \
- "${fstype}" = "jffs2" ]
- then
- # This is an ugly hack situation, the block device has
- # an image directly on it. It's hopefully
- # live-boot, so take it and run with it.
- ln -s "${devname}" "${devname}.${fstype}"
- echo "${devname}.${fstype}"
- return 0
- fi
- done
-
- return 1
-}
-
-integrity_check ()
-{
- media_mountpoint="${1}"
-
- log_begin_msg "Checking media integrity"
-
- cd ${media_mountpoint}
- /bin/md5sum -c md5sum.txt < /dev/tty8 > /dev/tty8
- RC="${?}"
-
- log_end_msg
-
- if [ "${RC}" -eq 0 ]
- then
- log_success_msg "Everything ok, will reboot in 10 seconds."
- sleep 10
- cd /
- umount ${media_mountpoint}
- sync
- echo u > /proc/sysrq-trigger
- echo b > /proc/sysrq-trigger
- else
- panic "Not ok, a media defect is likely, switch to VT8 for details."
- fi
-}
-
-mountroot ()
-{
- if [ -x /scripts/local-top/cryptroot ]; then
- /scripts/local-top/cryptroot
- fi
-
- exec 6>&1
- exec 7>&2
- exec > boot.log
- exec 2>&1
- tail -f boot.log >&7 &
- tailpid="${!}"
-
- . /live.vars
-
- Arguments
-
- # make sure all harddisk devices are read-only
- # this is important for forensic investigations
- case "${READ_ONLY}" in
- true)
- Read_only
- ;;
- esac
-
- Select_eth_device
-
- # Needed here too because some things (*cough* udev *cough*)
- # changes the timeout
-
- if [ ! -z "${NETBOOT}" ] || [ ! -z "${FETCH}" ] || [ ! -z "${HTTPFS}" ] || [ ! -z "${FTPFS}" ]
- then
- if do_netmount
- then
- livefs_root="${mountpoint}"
- else
- panic "Unable to find a live file system on the network"
- fi
- else
- if [ -n "${ISCSI_PORTAL}" ]
- then
- do_iscsi && livefs_root="${mountpoint}"
- elif [ -n "${PLAIN_ROOT}" ] && [ -n "${ROOT}" ]
- then
- # Do a local boot from hd
- livefs_root=${ROOT}
- else
- if [ -x /usr/bin/memdiskfind ]
- then
- MEMDISK=$(/usr/bin/memdiskfind)
-
- if [ $? -eq 0 ]
- then
- # We found a memdisk, set up phram
- modprobe phram phram=memdisk,${MEMDISK}
-
- # Load mtdblock, the memdisk will be /dev/mtdblock0
- modprobe mtdblock
- fi
- fi
-
- # Scan local devices for the image
- i=0
- while [ "$i" -lt 60 ]
- do
- livefs_root=$(find_livefs ${i})
-
- if [ -n "${livefs_root}" ]
- then
- break
- fi
-
- sleep 1
- i="$(($i + 1))"
- done
- fi
- fi
-
- if [ -z "${livefs_root}" ]
- then
- panic "Unable to find a medium containing a live file system"
- fi
-
- if [ "${INTEGRITY_CHECK}" ]
- then
- integrity_check "${livefs_root}"
- fi
-
- if [ "${TORAM}" ]
- then
- live_dest="ram"
- elif [ "${TODISK}" ]
- then
- live_dest="${TODISK}"
- fi
-
- if [ "${live_dest}" ]
- then
- log_begin_msg "Copying live media to ${live_dest}"
- copy_live_to "${livefs_root}" "${live_dest}"
- log_end_msg
- fi
-
- # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
- # because the mountpoint is left behind in /proc/mounts, so let's get
- # rid of it when running from RAM
- if [ -n "$FROMISO" ] && [ "${TORAM}" ]
- then
- losetup -d /dev/loop0
-
- if is_mountpoint /live/fromiso
- then
- umount /live/fromiso
- rmdir --ignore-fail-on-non-empty /live/fromiso \
- >/dev/null 2>&1 || true
- fi
- fi
-
- if [ -n "${MODULETORAMFILE}" ] || [ -n "${PLAIN_ROOT}" ]
- then
- setup_unionfs "${livefs_root}" "${rootmnt}"
- else
- mac="$(get_mac)"
- mac="$(echo ${mac} | sed 's/-//g')"
- mount_images_in_directory "${livefs_root}" "${rootmnt}" "${mac}"
- fi
-
-
- if [ -n "${ROOT_PID}" ] ; then
- echo "${ROOT_PID}" > "${rootmnt}"/live/root.pid
- fi
-
- log_end_msg
-
- # unionfs-fuse needs /dev to be bind-mounted for the duration of
- # live-bottom; udev's init script will take care of things after that
- if [ "${UNIONTYPE}" = unionfs-fuse ]
- then
- mount -n -o bind /dev "${rootmnt}/dev"
- fi
-
- # Move to the new root filesystem so that programs there can get at it.
- if [ ! -d /root/live/image ]
- then
- mkdir -p /root/live/image
- mount --move /live/image /root/live/image
- fi
-
- # aufs2 in kernel versions around 2.6.33 has a regression:
- # directories can't be accessed when read for the first the time,
- # causing a failure for example when accessing /var/lib/fai
- # when booting FAI, this simple workaround solves it
- ls /root/* >/dev/null 2>&1
-
- # Move findiso directory to the new root filesystem so that programs there can get at it.
- if [ -d /live/findiso ] && [ ! -d /root/live/findiso ]
- then
- mkdir -p /root/live/findiso
- mount -n --move /live/findiso /root/live/findiso
- fi
-
- # if we do not unmount the ISO we can't run "fsck /dev/ice" later on
- # because the mountpoint is left behind in /proc/mounts, so let's get
- # rid of it when running from RAM
- if [ -n "$FINDISO" ] && [ "${TORAM}" ]
- then
- losetup -d /dev/loop0
-
- if is_mountpoint /root/live/findiso
- then
- umount /root/live/findiso
- rmdir --ignore-fail-on-non-empty /root/live/findiso \
- >/dev/null 2>&1 || true
- fi
- fi
-
- # copy snapshot configuration if exists
- if [ -f snapshot.conf ]
- then
- log_begin_msg "Copying snapshot.conf to ${rootmnt}/etc/live/boot.d"
- if [ ! -d "${rootmnt}/etc/live/boot.d" ]
- then
- mkdir -p "${rootmnt}/etc/live/boot.d"
- fi
- cp snapshot.conf "${rootmnt}/etc/live/boot.d/"
- log_end_msg
- fi
-
- if [ -f /etc/resolv.conf ] && [ ! -s ${rootmnt}/etc/resolv.conf ]
- then
- log_begin_msg "Copying /etc/resolv.conf to ${rootmnt}/etc/resolv.conf"
- cp -v /etc/resolv.conf ${rootmnt}/etc/resolv.conf
- log_end_msg
- fi
-
- maybe_break live-bottom
- log_begin_msg "Running /scripts/live-bottom\n"
-
- run_scripts /scripts/live-bottom
- log_end_msg
-
- if [ "${UNIONFS}" = unionfs-fuse ]
- then
- umount "${rootmnt}/dev"
- fi
-
- exec 1>&6 6>&-
- exec 2>&7 7>&-
- kill ${tailpid}
- [ -w "${rootmnt}/var/log/" ] && mkdir -p /var/log/live && cp boot.log "${rootmnt}/var/log/live" 2>/dev/null
-}
projects / live-boot-grml.git / blobdiff