alt_mountpoint="/media"
LIVE_MEDIA_PATH="live"
-root_persistence="live-rw"
-home_persistence="home-rw"
+root_overlay_label="full-ov"
+custom_overlay_label="custom-ov"
root_snapshot_label="live-sn"
home_snapshot_label="home-sn"
+persistence_list="live.persist"
USERNAME="user"
USERFULLNAME="Live user"
export PERSISTENT
;;
- persistent=*)
- PERSISTENT="${ARGUMENT#persistent=}"
- if [ -z "${PERSISTENT}" ]
- then
- PERSISTENT="Yes"
- fi
- export PERSISTENT
+ persistent-encryption=*)
+ PERSISTENT_ENCRYPTION="${ARGUMENT#*=}"
+ export PERSISTENT_ENCRYPTION
;;
persistent-media=*)
PERSISTENT_MEDIA="${ARGUMENT#*=}"
export PERSISTENT_MEDIA
;;
+ persistent-method=*)
+ PERSISTENT_METHOD="${ARGUMENT#*=}"
+ export PERSISTENT_METHOD
+ ;;
persistent-path=*)
PERSISTENT_PATH="${ARGUMENT#persistent-path=}"
export PERSISTENT_PATH
;;
+ persistent-read-only)
+ PERSISTENT_READONLY="Yes"
+ export PERSISTENT_READONLY
+ ;;
+
+ persistent-storage=*)
+ PERSISTENT_STORAGE="${ARGUMENT#persistent-storage=}"
+ export PERSISTENT_STORAGE
+ ;;
persistent-subtext=*)
- root_persistence="${root_persistence}-${ARGUMENT#persistent-subtext=}"
- home_persistence="${home_persistence}-${ARGUMENT#persistent-subtext=}"
+ root_overlay_label="${root_overlay_label}-${ARGUMENT#persistent-subtext=}"
+ custom_overlay_label="${custom_overlay_label}-${ARGUMENT#persistent-subtext=}"
root_snapshot_label="${root_snapshot_label}-${ARGUMENT#persistent-subtext=}"
home_snapshot_label="${home_snapshot_label}-${ARGUMENT#persistent-subtext=}"
;;
UNIONTYPE="aufs"
export UNIONTYPE
fi
+
+ if [ -z "${PERSISTENT_ENCRYPTION}" ]
+ then
+ PERSISTENT_ENCRYPTION="none"
+ export PERSISTENT_ENCRYPTION
+ elif echo ${PERSISTENT_ENCRYPTION} | grep -qe "\<luks\>"
+ then
+ if ! modprobe dm-crypt
+ then
+ log_warning_msg "Unable to load module dm-crypt"
+ PERSISTENT_ENCRYPTION=$(echo ${PERSISTENT_ENCRYPTION} | sed -e 's/\<luks,\|,\?luks$//g')
+ export PERSISTENT_ENCRYPTION
+ fi
+
+ if [ ! -x /lib/cryptsetup/askpass ] || [ ! -x /sbin/cryptsetup ]
+ then
+ log_warning_msg "cryptsetup in unavailable"
+ PERSISTENT_ENCRYPTION=$(echo ${PERSISTENT_ENCRYPTION} | sed -e 's/\<luks,\|,\?luks$//g')
+ export PERSISTENT_ENCRYPTION
+ fi
+ fi
+
+ if [ -n "${PERSISTENT}" ] && [ -z "${PERSISTENT_METHOD}" ]
+ then
+ PERSISTENT_METHOD="snapshot,overlay"
+ export PERSISTENT_METHOD
+ fi
+
+ if [ -n "${PERSISTENT}" ] && [ -z "${PERSISTENT_STORAGE}" ]
+ then
+ PERSISTENT_STORAGE="filesystem,file"
+ export PERSISTENT_STORAGE
+ fi
}
is_live_path ()
{
sysfs_path="${1#/sys}"
- if /lib/udev/path_id "${sysfs_path}" | egrep -q "ID_PATH=(usb|pci-|platform-sata_mv|platform-orion-ehci|platform-mmc|platform-mxsdhci|)"
+ 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 "${sysfs_path}" | grep -q '^/block/vd[a-z]$'
#modprobe ib_iser
modprobe iscsi_tcp
local debugopt=""
- [ "${DEBUG}" == "Yes" ] && debugopt="-d 8"
+ [ "${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
fi
}
-find_snap ()
-{
- # Look for ${snap_label}.* in block devices
- snap_label="${1}"
- black_listed_devices="${2}"
- white_listed_devices="${3}"
-
- if [ "${PERSISTENT}" != "nofiles" ]
- then
- # search for image files
- snapdata=$(find_files "${PERSISTENT_PATH}${snap_label}.squashfs ${PERSISTENT_PATH}${snap_label}.cpio.gz ${PERSISTENT_PATH}${snap_label}.ext2 ${PERSISTENT_PATH}${snap_label}.ext3 ${PERSISTENT_PATH}${snap_label}.ext4 ${PERSISTENT_PATH}${snap_label}.jffs2" "${black_listed_devices}" "${white_listed_devices}")
- fi
-
- if [ -z "${snapdata}" ]
- then
- snapdata=$(find_cow_device "${snap_label}" "${black_listed_devices}" "${white_listed_devices}")
- fi
- echo "${snapdata}"
-}
-
try_snap ()
{
# copy the contents of previously found snapshot to ${snap_mount}
return 1
fi
- echo "export ${snap_type}SNAP=${snap_relpath}:${snapdev}:${snapfile}" >> snapshot.conf # for resync on reboot/halt
+ if [ -z ${PERSISTENT_READONLY} ]
+ then
+ echo "export ${snap_type}SNAP=${snap_relpath}:${snapdev}:${snapfile}" >> snapshot.conf # for resync on reboot/halt
+ fi
return 0
}
addimage_directory="${3}"
case ${UNIONTYPE} in
- aufs|unionfs)
+ aufs|unionfs|overlayfs)
modprobe -q -b ${UNIONTYPE}
if ! cut -f2 /proc/filesystems | grep -q "^${UNIONTYPE}\$" && [ -x /bin/unionfs-fuse ]
# Let's just mount the read-only file systems first
rofslist=""
- if [ "${UNIONTYPE}" = "aufs" ]
- then
- roopt="rr"
- noxino_opt="noxino,"
- elif [ "${UNIONTYPE}" = "unionfs-fuse" ]
- then
- roopt="RO"
- else
- roopt="ro"
- fi
-
if [ -z "${PLAIN_ROOT}" ]
then
# Read image names from ${MODULE}.module if it exists
mkdir -p /cow
- # Looking for "${root_persistence}" device or file
+ # Looking for persistent devices or files
if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
then
;;
esac
- # search for label and files (this could be hugely optimized)
- cowprobe=$(find_cow_device "${root_persistence}" "${blacklistdev}" "${whitelistdev}")
- if [ -b "${cowprobe}" ]
+ if echo ${PERSISTENT_METHOD} | grep -qe "\<overlay\>"
then
- # Blacklist /cow device, to avoid inconsistent setups for overlapping snapshots
- # makes sense to have both persistence for /cow and /home mounted, maybe also with
- # snapshots to be sure to really store some e.g key config files,
- # but not on the same media
- blacklistdev="${cowprobe}"
- PERSISTENCE_IS_ON="1"
- export PERSISTENCE_IS_ON
+ overlays="${root_overlay_label} ${custom_overlay_label}"
fi
- # homecow just mount something on /home, this should be generalized some way
- homecow=$(find_cow_device "${home_persistence}" "${blacklistdev}" "${whitelistdev}")
- if [ -b "${homecow}" ]
+
+ if echo ${PERSISTENT_METHOD} | grep -qe "\<snapshot\>"
then
- PERSISTENCE_IS_ON="1"
- export PERSISTENCE_IS_ON
+ snapshots="${root_snapshot_label} ${home_snapshot_label}"
fi
- root_snapdata=$(find_snap "${root_snapshot_label}" "${blacklistdev}" "${whitelistdev}")
- # This second type should be removed when snapshot will get smarter,
- # hence when "/etc/live-snapshot*list" will be supported also by
- # ext2|ext3|ext4|jffs2 snapshot types.
- home_snapdata=$(find_snap "${home_snapshot_label}" "${blacklistdev}" "${whitelistdev}")
- if [ -b "${cowprobe}" ]
+ local root_snapdata=""
+ local home_snapshot_label=""
+ local root_overlay_label=""
+ local overlay_devices=""
+ for media in $(find_persistent_media "${overlays}" "${snapshots}" "${blacklistdev}" "${whitelistdev}")
+ do
+ media="$(echo ${media} | tr ":" " ")"
+ case ${media} in
+ ${root_snapshot_label}=*)
+ if [ -z "${root_snapdata}" ]
+ then
+ root_snapdata="${media#*=}"
+ fi
+ ;;
+ ${home_snapshot_label}=*)
+ # This second type should be removed when snapshot will get smarter,
+ # hence when "/etc/live-snapshot*list" will be supported also by
+ # ext2|ext3|ext4|jffs2 snapshot types.
+ if [ -z "${home_snapdata}" ]
+ then
+ home_snapdata="${media#*=}"
+ fi
+ ;;
+ ${root_overlay_label}=*)
+ if [ -z "${root_overlay_device}" ]
+ then
+ device="${media#*=}"
+ root_overlay_device="${device}"
+ fi
+ ;;
+ ${custom_overlay_label}=*)
+ device="${media#*=}"
+ overlay_devices="${overlay_devices} ${device}"
+ ;;
+ esac
+ done
+
+ if [ -b "${root_overlay_device}" ]
then
- cowdevice=${cowprobe}
- cow_fstype=$(get_fstype "${cowprobe}")
- cow_mountopt="rw,noatime"
+ PERSISTENCE_IS_ON="1"
+ export PERSISTENCE_IS_ON
+
+ cowdevice=${root_overlay_device}
+ cow_fstype=$(get_fstype "${root_overlay_device}")
+ if [ -z "${PERSISTENT_READONLY}" ]
+ then
+ cow_mountopt="rw,noatime"
+ else
+ cow_mountopt="ro,noatime"
+ fi
if [ "${FORCEPERSISTENTFSCK}" = "Yes" ]
then
fsck -y ${cowdevice}
fi
- else
- log_warning_msg "Unable to find the persistent medium"
- cowdevice="tmpfs"
- cow_fstype="tmpfs"
- cow_mountopt="rw,noatime,mode=755"
fi
elif [ -n "${NFS_COW}" ] && [ -z "${NOPERSISTENT}" ]
then
nfs_cow_opts="-o nolock"
nfs_cow=${NFS_COW}
fi
+
+ if [ -n "${PERSISTENT_READONLY}" ]
+ then
+ nfs_cow_opts="${nfs_cow_opts},nocto,ro"
+ fi
+
mac="$(get_mac)"
if [ -n "${mac}" ]
then
else
panic "unable to determine mac address"
fi
- else
+ fi
+
+ if [ -z "${cowdevice}" ]
+ then
cowdevice="tmpfs"
cow_fstype="tmpfs"
cow_mountopt="rw,noatime,mode=755"
if [ "${UNIONTYPE}" != "unionmount" ]
then
+ if [ -n "${PERSISTENT_READONLY}" ]
+ then
+ mount -t tmpfs -o rw,noatime,mode=755 tmpfs "/cow"
+ root_backing="${rootmnt}/live/persistent/$(basename ${cowdevice})-root"
+ mkdir -p ${root_backing}
+ else
+ root_backing="/cow"
+ fi
if [ "${cow_fstype}" = "nfs" ]
then
log_begin_msg \
- "Trying nfsmount ${nfs_cow_opts} ${cowdevice} /cow"
- nfsmount ${nfs_cow_opts} ${cowdevice} /cow || \
- panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on /cow"
+ "Trying nfsmount ${nfs_cow_opts} ${cowdevice} ${root_backing}"
+ nfsmount ${nfs_cow_opts} ${cowdevice} ${root_backing} || \
+ panic "Can not mount ${cowdevice} (n: ${cow_fstype}) on ${root_backing}"
else
- mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} /cow || \
- panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on /cow"
+ mount -t ${cow_fstype} -o ${cow_mountopt} ${cowdevice} ${root_backing} || \
+ panic "Can not mount ${cowdevice} (o: ${cow_fstype}) on ${root_backing}"
fi
fi
rofscount=$(echo ${rofslist} |wc -w)
+ # XXX: we now ensure that there can only be one read-only filesystem. Should this be inside the EXPOSED_ROOT if?
if [ ${rofscount} -ne 1 ]
then
panic "only one RO file system supported with exposedroot: ${rofslist}"
#panic "unionmount does not support subunions (${cow_dirs})."
fi
- unionmountopts=""
- unionmountpoint=""
-
for dir in ${cow_dirs}; do
- mkdir -p /cow${dir}
-
unionmountpoint="${rootmnt}${dir}"
- unionrw="/cow${dir}"
- unionro="${rofs}${dir}"
- # We don't handle spaces and other junk gracefully here, hopefully not needed.
- case "${UNIONTYPE}" in
- unionfs-fuse)
- unionmountopts="-o cow -o noinitgroups -o default_permissions -o allow_other -o use_ino -o suid"
- unionmountopts="${unionmountopts} ${unionrw}=RW:${unionro}=RO"
- ( sysctl -w fs.file-max=391524 ; ulimit -HSn 16384
- unionfs-fuse ${unionmountopts} "${unionmountpoint}" ) && \
- ( mkdir -p /run/sendsigs.omit.d
- pidof unionfs-fuse >> /run/sendsigs.omit.d/unionfs-fuse || true )
- ;;
-
- unionmount)
- unionmountopts="-t ${cow_fstype} -o noatime,union,${cow_mountopt} ${cowdevice}"
- mount_full $unionmountopts "${unionmountpoint}"
- ;;
-
-
- *)
- unionmountopts="-o noatime,${noxino_opt}dirs=${unionrw}=rw:${unionro}=${roopt}"
- mount -t ${UNIONTYPE} ${unionmountopts} ${UNIONTYPE} "${unionmountpoint}"
- ;;
- esac || \
- panic "mount ${UNIONTYPE} on ${unionmountpoint} failed with option ${unionmountopts}"
+ mkdir -p ${unionmountpoint}
+ if [ "${UNIONTYPE}" = "unionmount" ]
+ then
+ # FIXME: handle PERSISTENT_READONLY
+ unionmountopts="-t ${cow_fstype} -o noatime,union,${cow_mountopt} ${cowdevice}"
+ mount_full $unionmountopts "${unionmountpoint}"
+ else
+ cow_dir="/cow${dir}"
+ rofs_dir="${rofs}${dir}"
+ mkdir -p ${cow_dir}
+ if [ -n "${PERSISTENT_READONLY}" ] && [ "${cowdevice}" != "tmpfs" ]
+ then
+ #mount -t tmpfs -o rw,noatime,mode=755 tmpfs "${cow_dir}"
+ do_union ${unionmountpoint} ${cow_dir} ${root_backing} ${rofs_dir}
+ else
+ do_union ${unionmountpoint} ${cow_dir} ${rofs_dir}
+ fi
+ fi || panic "mount ${UNIONTYPE} on ${unionmountpoint} failed with option ${unionmountopts}"
done
# Correct the permissions of /:
mkdir -p "${rootmnt}/live"
mount -t tmpfs tmpfs ${rootmnt}/live
- # Adding other custom mounts
- if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
- then
- # directly mount /home
- # FIXME: add a custom mounts configurable system
-
- if [ -b "${homecow}" ]
- then
- mount -t $(get_fstype "${homecow}") -o rw,noatime "${homecow}" "${rootmnt}/home"
- export HOMEMOUNTED=1 # used to proper calculate free space in do_snap_copy()
- else
- log_warning_msg "Unable to find the persistent home medium"
- fi
-
- # Look for other snapshots to copy in
- try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
- # This second type should be removed when snapshot grow smarter
- try_snap "${home_snapdata}" "${rootmnt}" "HOME" "/home"
- fi
-
- if [ -n "${SHOWMOUNTS}" ]
+ live_rofs_list=""
+ # SHOWMOUNTS is necessary for custom mounts with the union option
+ # Since we may want to do custom mounts in user-space it's best to always enable SHOWMOUNTS
+ if true #[ -n "${SHOWMOUNTS}" ] || ( [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ] 1)
then
+ # XXX: is the for loop really necessary? rofslist can only contain one item (see above XXX about EXPOSEDROOT) and this is also assumed elsewhere above (see use of $rofs above).
for d in ${rofslist}
do
- mkdir -p "${rootmnt}/live/${d##*/}"
-
+ live_rofs="${rootmnt}/live/rofs/${d##*/}"
+ live_rofs_list="${live_rofs_list} ${live_rofs}"
+ mkdir -p "${live_rofs}"
case d in
*.dir)
- # do nothing # mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
+ # do nothing # mount -o bind "${d}" "${live_rofs}"
;;
-
*)
case "${UNIONTYPE}" in
unionfs-fuse)
- mount -o bind "${d}" "${rootmnt}/live/${d##*/}"
+ mount -o bind "${d}" "${live_rofs}"
;;
-
*)
- mount -o move "${d}" "${rootmnt}/live/${d##*/}"
+ mount -o move "${d}" "${live_rofs}"
;;
esac
;;
done
fi
+ # Adding custom persistent
+ if [ -n "${PERSISTENT}" ] && [ -z "${NOPERSISTENT}" ]
+ then
+ local custom_mounts="/custom_mounts.list"
+ rm -rf ${custom_mounts} 2> /dev/null
+
+ # Gather information about custom mounts from devies detected as overlays
+ get_custom_mounts ${overlay_devices} ${custom_mounts} ${rootmnt}
+
+ [ "${DEBUG}" = "Yes" ] && cp ${custom_mounts} "${rootmnt}/live/persistent"
+
+ # Now we do the actual mounting (and symlinking)
+ do_custom_mounts ${custom_mounts} ${rootmnt}
+ rm ${custom_mounts}
+
+ # Look for other snapshots to copy in
+ try_snap "${root_snapdata}" "${rootmnt}" "ROOT"
+ # This second type should be removed when snapshot grow smarter
+ try_snap "${home_snapdata}" "${rootmnt}" "HOME" "/home"
+ fi
+
# shows cow fs on /cow for use by live-snapshot
mkdir -p "${rootmnt}/live/cow"
mount -o move /cow "${rootmnt}/live/cow" >/dev/null 2>&1 || mount -o bind /cow "${rootmnt}/live/cow" || log_warning_msg "Unable to move or bind /cow to ${rootmnt}/live/cow"
projects / live-boot-grml.git / blobdiff