# live-snapshot - utility to manage Debian Live systems snapshots
#
# This program mounts a device (fallback to /tmpfs under $MOUNTP
-# and saves the /live/cow (or a different directory) filesystem in it
+# and saves the /live/overlway (or a different directory) filesystem in it
# for reuse in another live-boot session.
# Look at the manpage for more informations.
#
-# Copyright (C) 2006-2008 Marco Amadori <marco.amadori@gmail.com>
+# Copyright (C) 2006-2011 Marco Amadori <marco.amadori@gmail.com>
# Copyright (C) 2008 Chris Lamb <chris@chris-lamb.co.uk>
#
# This program is free software: you can redistribute it and/or modify
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
-# On Debian systems, the complete text of the GNU General Public License
+# The complete text of the GNU General Public License
# can be found in /usr/share/common-licenses/GPL-3 file.
# declare here two vars from /etc/live.conf because of "set -u"
set -e
fi
-. /usr/share/initramfs-tools/scripts/live-helpers
+## Begin FIXME: this is an embedded copy of the old 'live-helpers' initramfs script
+if [ ! -x "/bin/fstype" ]
+then
+ # klibc not in path -> not in initramfs
+ export PATH="${PATH}:/usr/lib/klibc/bin"
+fi
+
+# handle upgrade path from old udev (using udevinfo) to
+# recent versions of udev (using udevadm info)
+if [ -x /sbin/udevadm ]
+then
+ udevinfo='/sbin/udevadm info'
+else
+ udevinfo='udevinfo'
+fi
+
+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"
+
+# include all scripts for the time being until snapshots are either dropped or cleaned up
+for _SCRIPT in /lib/live/boot/*
+do
+ if [ -e "${_SCRIPT}" ]
+ then
+ . ${_SCRIPT}
+ fi
+done
+## End FIXME: this is an embedded copy of the old 'live-helpers' initramfs script
-LIVE_CONF="/etc/live.conf"
+LIVE_CONF="/etc/live/boot.d/snapshot.conf"
if [ -r "${LIVE_CONF}" ]
then
# Permits multiple runs
MOUNTP="$(mktemp -d -p ${SAFE_TMPDIR} live-snapshot-mnt.XXXXXX)"
DEST="${MOUNTP}/live-sn.cpio.gz"
-DEF_SNAP_COW="/live/cow"
+DEF_SNAP_COW="/live/overlay"
TMP_FILELIST="${PROGRAM}.list"
# Command line defaults and declarations
{
echo "${PROGRAM}"
echo
- echo "Copyright (C) 2006 Marco Amadori <marco.amadori@gmail.com>"
+ echo "Copyright (C) 2006-2011 Marco Amadori <marco.amadori@gmail.com>"
echo "Copyright (C) 2008 Chris Lamb <chris@chris-lamb.co.uk>"
echo
echo "This program is free software; you can redistribute it and/or modify"
echo "it under the terms of the GNU General Public License as published by"
- echo "the Free Software Foundation; either version 2 of the License, or"
+ echo "the Free Software Foundation; either version 3 of the License, or"
echo "(at your option) any later version."
echo
echo "This program is distributed in the hope that it will be useful,"
echo "along with this program; if not, write to the Free Software"
echo "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA"
echo
- echo "On Debian systems, the complete text of the GNU General Public License"
- echo "can be found in /usr/share/common-licenses/GPL-2 file."
+ echo "The complete text of the GNU General Public License"
+ echo "can be found in /usr/share/common-licenses/GPL-3 file."
echo
- echo "Homepage: <http://debian-live.alioth.debian.org/>"
+ echo "Homepage: <http://live.debian.net/>"
exit 0
}
# Parse resync string
if [ -n "${SNAP_RESYNC_STRING}" ]
then
- SNAP_COW=$(echo "${SNAP_RESYNC_STRING}" | sed -e 's|^/root\([^:.]*\).*$|'"${DEF_SNAP_COW}"'\1|')
+ SNAP_COW=$(echo "${SNAP_RESYNC_STRING}" | sed -r -e 's#^([^:]*).*$#'"${DEF_SNAP_COW}"'\1#')
SNAP_DEV=$(echo "${SNAP_RESYNC_STRING}" | cut -f2 -d ':')
SNAP_MNT=$(echo "${SNAP_RESYNC_STRING}" | cut -f3 -d ':')
DEST="${MOUNTP}/${SNAP_MNT}"
if [ -f "${SNAP_LIST}" ]
then
- # if SNAP_COW == /live/cow/home, SNAP_RW = /home
+ # if SNAP_COW == /live/overlay/home, SNAP_RW = /home
SNAP_RW=$(echo "${SNAP_COW}" | sed -e "s|${DEF_SNAP_COW}||g")
if [ -z "${SNAP_RW}" ]
then
Do_snapshot ()
{
TMP_FILELIST=$(mktemp -p "${SAFE_TMPDIR}" "${TMP_FILELIST}.XXXXXX")
+ if [ -e "${EXCLUDE_LIST}" ]
+ then
+ # Create a TMP filelist removing empty lines (grep -f does not like them)
+ # and comments (for speedup and LST)
+ TMP_EXCLUDE_LIST=$(mktemp -p "${SAFE_TMPDIR}" "${PROGRAM}_excludelist.XXXXXX")
+ grep -v '^#.*$' "${EXCLUDE_LIST}" | grep -v '^ *$' > "${TMP_EXCLUDE_LIST}"
+ fi
case "${SNAP_TYPE}" in
squashfs)
if [ -e "${EXCLUDE_LIST}" ]
then
# Add explicitly excluded files
- grep -v '^#.*$' "${EXCLUDE_LIST}" | grep -v '^ *$' >> "${TMP_FILELIST}"
+ cat "${TMP_EXCLUDE_LIST}" >> "${TMP_FILELIST}"
fi
cd "${OLDPWD}"
cd "${WORKING_DIR}"
if [ -e "${EXCLUDE_LIST}" ]
then
+
# Convert \0 to \n and tag existing (rare but possible) \n in filenames,
# this to let grep -F -v do a proper work in filtering out
cat "${TMP_FILELIST}" | \
tr '\n' '\1' | \
tr '\0' '\n' | \
- grep -F -v -f "${EXCLUDE_LIST}" | \
+ grep -F -v -f "${TMP_EXCLUDE_LIST}" | \
tr '\n' '\0' | \
tr '\1' '\n' | \
eval $COPY_CMD || exit 1
;;
esac
- if [ -f "${TMP_FILELIST}" ]
- then
- rm -f "${TMP_FILELIST}"
- fi
+ # Remove temporary file lists
+ for filelist in "${TMP_FILELIST}" "${TMP_EXCLUDE_LIST}"
+ do
+ if [ -f "${filelist}" ]
+ then
+ rm -f "${filelist}"
+ fi
+ done
}
Clean ()
;;
esac
- if grep -qv persistent /proc/cmdline
+ if grep -qv persistence /proc/cmdline
then
- echo "Remember to boot this live system with \"persistent\" specified at boot prompt." > /dev/null 1>&2
+ echo "Remember to boot this live system with \"persistence\" specified at boot prompt." > /dev/null 1>&2
fi
fi
}
projects / live-boot-grml.git / blobdiff