X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=bin%2Flive-snapshot;fp=bin%2Flive-snapshot;h=0000000000000000000000000000000000000000;hb=e243babf191d5b42efe58e90e74a22bd8063be8d;hp=46ae597adc895b4a44963a89f47c8b6c17a672ee;hpb=f04ab476c668ad513f1ec68beaa948a26c862e05;p=live-boot-grml.git

diff --git a/bin/live-snapshot b/bin/live-snapshot
deleted file mode 100755
index 46ae597..0000000
--- a/bin/live-snapshot
+++ /dev/null
@@ -1,570 +0,0 @@
-#!/bin/sh
-
-# live-snapshot - utility to manage Debian Live systems snapshots
-#
-#   This program mounts a device (fallback to /tmpfs under $MOUNTP
-#   and saves the /live/overlway (or a different directory) filesystem in it
-#   for reuse in another live-boot session.
-#   Look at the manpage for more informations.
-#
-# Copyright (C) 2006-2011 Marco Amadori <marco.amadori@gmail.com>
-# Copyright (C) 2008 Chris Lamb <chris@chris-lamb.co.uk>
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-#
-# The complete text of the GNU General Public License
-# can be found in /usr/share/common-licenses/GPL-3 file.
-
-# declare here two vars from /etc/live.conf because of "set -u"
-ROOTSNAP=""
-HOMESNAP=""
-
-if [ -n "${LIVE_SNAPSHOT_CHECK_UNBOUND}" ]
-then
-	set -eu
-else
-	set -e
-fi
-
-## 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
-		. ${_SCRIPT}
-	fi
-done
-## End FIXME: this is an embedded copy of the old 'live-helpers' initramfs script
-
-LIVE_CONF="/etc/live/boot.d/snapshot.conf"
-
-if [ -r "${LIVE_CONF}" ]
-then
-	. "${LIVE_CONF}"
-fi
-
-export USERNAME USERFULLNAME HOSTNAME
-
-EXECUTABLE="${0}"
-PROGRAM=$(basename "${EXECUTABLE}")
-
-# Needs to be available at run and reboot time
-SAFE_TMPDIR="/live"
-
-# Permits multiple runs
-MOUNTP="$(mktemp -d -p ${SAFE_TMPDIR} live-snapshot-mnt.XXXXXX)"
-DEST="${MOUNTP}/live-sn.cpio.gz"
-DEF_SNAP_COW="/live/overlay"
-TMP_FILELIST="${PROGRAM}.list"
-
-# Command line defaults and declarations
-SNAP_COW="${DEF_SNAP_COW}"
-SNAP_DEV=""
-SNAP_MNT=""
-SNAP_OUTPUT=""
-SNAP_RESYNC_STRING=""
-SNAP_TYPE="cpio"
-SNAP_LIST="/etc/live-snapshot.list"
-EXCLUDE_LIST="/etc/live-snapshot.exclude_list"
-
-Error ()
-{
-	echo "${PROGRAM}: error:" ${@}
-	exit 1
-}
-
-panic ()
-{
-	Error ${@}
-}
-
-Header ()
-{
-	echo "${PROGRAM} - utility to perform snapshots of Debian Live systems"
-	echo
-	echo "usage: ${PROGRAM} [-c|--cow DIRECTORY] [-d|--device DEVICE] [-o|--output FILE] [-t|--type TYPE]"
-	echo "       ${PROGRAM} [-r|--resync-string STRING]"
-	echo "       ${PROGRAM} [-f|--refresh]"
-	echo "       ${PROGRAM} [-h|--help]"
-	echo "       ${PROGRAM} [-u|--usage]"
-	echo "       ${PROGRAM} [-v|--version]"
-}
-
-Help ()
-{
-	Header
-
-	echo
-	echo "Options:"
-	echo "  -c, --cow: copy on write directory (default: ${SNAP_COW})."
-	echo "  -d, --device: output snapshot device (default: ${SNAP_DEV:-auto})."
-	echo "  -o, --output: output image file (default: ${DEST})."
-	echo "  -r, --resync-string: internally used to resync previous made snapshots."
-	echo "  -f, --refresh: try to sync a running snapshot."
-	echo "  -t, --type: snapshot filesystem type. Options: \"squashfs\", \"ext2\", \"ext3\", \"ext4\", \"jffs2\" or \"cpio\".gz archive (default: ${SNAP_TYPE})"
-	echo
-	echo "Look at live-snapshot(1) man page for more information."
-
-	exit 0
-}
-
-Usage ()
-{
-	Header
-
-	echo
-	echo "Try \"${PROGRAM} --help\" for more information."
-
-	exit 0
-}
-
-Version ()
-{
-	echo "${PROGRAM}"
-	echo
-	echo "Copyright (C) 2006-2011 Marco Amadori <marco.amadori@gmail.com>"
-	echo "Copyright (C) 2008 Chris Lamb <chris@chris-lamb.co.uk>"
-	echo
-	echo "This program is free software; you can redistribute it and/or modify"
-	echo "it under the terms of the GNU General Public License as published by"
-	echo "the Free Software Foundation; either version 3 of the License, or"
-	echo "(at your option) any later version."
-	echo
-	echo "This program is distributed in the hope that it will be useful,"
-	echo "but WITHOUT ANY WARRANTY; without even the implied warranty of"
-	echo "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the"
-	echo "GNU General Public License for more details."
-	echo
-	echo "You should have received a copy of the GNU General Public License"
-	echo "along with this program; if not, write to the Free Software"
-	echo "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA"
-	echo
-	echo "The complete text of the GNU General Public License"
-	echo "can be found in /usr/share/common-licenses/GPL-3 file."
-	echo
-	echo "Homepage: <http://live.debian.net/>"
-
-	exit 0
-}
-
-Try_refresh ()
-{
-	FOUND=""
-	if [ -n "${ROOTSNAP}" ]; then
-		"${EXECUTABLE}" --resync-string="${ROOTSNAP}"
-		FOUND="true"
-	fi
-
-	if [ -n "${HOMESNAP}" ]; then
-		"${EXECUTABLE}" --resync-string="${HOMESNAP}"
-		FOUND="true"
-	fi
-
-	if [ -z "${FOUND}" ]
-	then
-		echo "No autoconfigured snapshots found at boot;" > /dev/null 1>&2
-		echo "(no resync string in ${LIVE_CONF})." > /dev/null 1>&2
-		exit 1
-	fi
-}
-
-Parse_args ()
-{
-	# Parse command line
-	ARGS="${*}"
-	ARGUMENTS="$(getopt --longoptions cow:,device:,output,resync-string:,refresh,type:,help,usage,version --name=${PROGRAM} --options c:d:o:t:r:fhuv --shell sh -- ${ARGS})"
-
-	eval set -- "${ARGUMENTS}"
-
-	while true
-	do
-		case "${1}" in
-			-c|--cow)
-				SNAP_COW="${2}"
-				shift 2
-				;;
-
-			-d|--device)
-				SNAP_DEV="${2}"
-				shift 2
-				;;
-
-			-o|--output)
-				SNAP_OUTPUT="${2}"
-				shift 2
-				;;
-
-			-t|--type)
-				SNAP_TYPE="${2}"
-				shift 2
-				;;
-
-			-r|--resync-string)
-				SNAP_RESYNC_STRING="${2}"
-				break
-				;;
-
-			-f|--refresh)
-				Try_refresh
-				exit 0
-				;;
-
-			-h|--help)
-				Help
-				;;
-
-			-u|--usage)
-				Usage
-				;;
-
-			-v|--version)
-				Version
-				;;
-
-			--)
-				shift
-				break
-				;;
-
-			*)
-				Error "internal error."
-				;;
-
-		esac
-	done
-}
-
-Defaults ()
-{
-	# Parse resync string
-	if [ -n "${SNAP_RESYNC_STRING}" ]
-	then
-		SNAP_COW=$(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}/${SNAP_MNT}"
-
-		case "${SNAP_MNT}" in
-			*.cpio.gz)
-				SNAP_TYPE="cpio"
-				;;
-
-			*.squashfs)
-				SNAP_TYPE="squashfs"
-				;;
-
-			*.jffs2)
-				SNAP_TYPE="jffs2"
-				;;
-
-			*.ext2|*.ext3)
-				SNAP_TYPE="ext2"
-				;;
-
-			"")
-				SNAP_TYPE="whole_partition"
-				;;
-
-			*.ext4)
-				SNAP_TYPE="ext4"
-				;;
-
-			*)
-				Error "unrecognized resync string"
-				;;
-		esac
-	elif [ -z "${SNAP_OUTPUT}" ]
-	then
-		# Set target file based on image
-		case "${SNAP_TYPE}" in
-			cpio)
-				DEST="${MOUNTP}/live-sn.cpio.gz"
-				;;
-
-			squashfs|jffs2|ext2)
-				DEST="${MOUNTP}/live-sn.${SNAP_TYPE}"
-				;;
-
-			ext3)
-				DEST="${MOUNTP}/live-sn.ext2"
-				;;
-
-			ext4)
-				DEST="${MOUNTP}/live-sn.ext4"
-				;;
-		esac
-	else
-		DEST="${SNAP_OUTPUT}"
-	fi
-}
-
-Validate_input ()
-{
-	case "${SNAP_TYPE}" in
-		cpio|squashfs|jffs2|ext2|ext3|ext4|whole_partition)
-			;;
-
-		*)
-			Error "invalid filesystem type \"${SNAP_TYPE}\""
-			;;
-	esac
-
-	if [ ! -d "${SNAP_COW}" ]
-	then
-		Error "${SNAP_COW} is not a directory"
-	fi
-
-	if [ "$(id -u)" -ne 0 ]
-	then
-		Error "you are not root"
-	fi
-}
-
-Mount_device ()
-{
-	case "${SNAP_DEV}" in
-		"")
-			# create a temp
-			mount -t tmpfs -o rw tmpfs "${MOUNTP}"
-			;;
-
-		*)
-			if [ -b "${SNAP_DEV}" ]
-			then
-				try_mount "${SNAP_DEV}" "${MOUNTP}" rw
-			fi
-			;;
-	esac
-}
-
-Entry_is_modified ()
-{
-	# Returns true if file exists and it is also present in "cow" directory
-	# This means it is modified in respect to read-only media, so it deserve
-	# to be saved
-
-	entry="${1}"
-
-	if [ -e "${entry}" ] || [ -L "${entry}" ]
-	then
-		if [ -e "${SNAP_COW}/${entry}" ] || [ -L "${SNAP_COW}/${entry}" ]
-		then
-			return 0
-		fi
-	fi
-	return 1
-}
-
-Do_filelist ()
-{
-	# BUGS: does not handle deleted files yet
-	TMP_FILELIST=$1
-
-	if [ -f "${SNAP_LIST}" ]
-	then
-		# 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
-			SNAP_RW="/"
-		fi
-
-		cd "${SNAP_RW}"
-		# Generate include list removing empty and commented lines
-		# and transforming paths to relatives
-		for entry in $(sed -e '/^ *$/d' -e '/^#.*$/d' -e 's#^.*$#./&#' -e 's#/\+#/#g' "${SNAP_LIST}")
-		do
-			if [ -d "${entry}" ]
-			then
-				find "${entry}" | while read line
-				do
-					if Entry_is_modified "${line}"
-					then
-						printf "%s\000" "${line}" >> "${TMP_FILELIST}"
-					fi
-				done
-			elif Entry_is_modified "${entry}"
-			then
-				# if file exists and it is modified
-				printf "%s\000" "${entry}" >> "${TMP_FILELIST}"
-			fi
-		done
-		cd "${OLDPWD}"
-
-		# echo Working dir
-		echo "${SNAP_RW}"
-	else
-		cd "${SNAP_COW}"
-		# removing whiteouts from list
-		find . -path '*.wh.*' -prune -o -print0 >> "${TMP_FILELIST}"
-		cd "${OLDPWD}"
-		# echo Working dir
-		echo "${SNAP_COW}"
-	fi
-}
-
-Do_snapshot ()
-{
-	TMP_FILELIST=$(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 "${SNAP_TYPE}" in
-		squashfs)
-			echo ".${TMP_FILELIST}" > "${TMP_FILELIST}"
-			# Removing whiteheads of unionfs
-			cd "${SNAP_COW}"
-			find . -name '*.wh.*' >> "${TMP_FILELIST}"
-
-			if [ -e "${EXCLUDE_LIST}" ]
-			then
-				# Add explicitly excluded files
-				cat "${TMP_EXCLUDE_LIST}" >> "${TMP_FILELIST}"
-			fi
-
-			cd "${OLDPWD}"
-			mksquashfs "${SNAP_COW}" "${DEST}" -ef "${TMP_FILELIST}"
-			;;
-
-		cpio|whole_partition)
-			if [ "${SNAP_TYPE}" = "cpio" ]
-			then
-				COPY_CMD="cpio --quiet -o0 -H newc | gzip -9c > ${DEST}"
-			else
-				COPY_CMD="cpio --quiet -pumd0 ${DEST}/"
-			fi
-
-			WORKING_DIR=$(Do_filelist "${TMP_FILELIST}")
-			cd "${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 "${TMP_EXCLUDE_LIST}" | \
-					tr '\n' '\0' | \
-					tr '\1' '\n' | \
-					eval $COPY_CMD || exit 1
-			else
-				cat "${TMP_FILELIST}" | \
-					eval $COPY_CMD || exit 1
-			fi
-			cd "${OLDPWD}"
-			;;
-
-		# ext2|ext3|ext4 and jffs2 does not easily support an exclude list; files
-		# should be copied to another directory in order to filter content
-		ext2|ext3|ext4)
-			DU_DIM="$(du -ks ${SNAP_COW} | cut -f1)"
-			REAL_DIM="$(expr ${DU_DIM} + ${DU_DIM} / 20)" # Just 5% more to be sure, need something more sophistcated here...
-			genext2fs --size-in-blocks=${REAL_DIM} --reserved-percentage=0 --root="${SNAP_COW}" "${DEST}"
-			;;
-
-		jffs2)
-			mkfs.jffs2 --root="${SNAP_COW}" --output="${DEST}"
-			;;
-	esac
-
-	# Remove temporary file lists
-	for filelist in "${TMP_FILELIST}" "${TMP_EXCLUDE_LIST}"
-	do
-		if [ -f "${filelist}" ]
-		then
-			rm -f "${filelist}"
-		fi
-	done
-}
-
-Clean ()
-{
-	if [ -z "${SNAP_RESYNC_STRING}" ] && echo "${DEST}" | grep -q "${MOUNTP}"
-	then
-		echo "${DEST} is present on ${MOUNTP}, therefore no automatic unmounting the latter." > /dev/null 1>&2
-	else
-		umount "${MOUNTP}"
-		rmdir "${MOUNTP}"
-	fi
-}
-
-Warn_user ()
-{
-	if [ -z "${SNAP_RESYNC_STRING}" ]
-	then
-		case ${SNAP_TYPE} in
-			cpio|ext2|ext3|ext4)
-				echo "Please move ${DEST} (if is not already in it)" > /dev/null 1>&2
-				echo "in a supported writable partition (e.g ext3, vfat)." > /dev/null 1>&2
-				;;
-
-			squashfs)
-				echo "To use ${DEST} you need to rebuild your media or add it" > /dev/null 1>&2
-				echo "to your multisession disc under the \"/live\" directory." > /dev/null 1>&2
-				;;
-
-			jffs2)
-				echo "Please cat or flashcp ${DEST} to your partition in order to start using it." > /dev/null 1>&2
-				;;
-		esac
-
-		if grep -qv persistence /proc/cmdline
-		then
-			echo "Remember to boot this live system with \"persistence\" specified at boot prompt." > /dev/null 1>&2
-		fi
-	fi
-}
-
-Main ()
-{
-	Parse_args "${@}"
-	Defaults
-	Validate_input
-	trap 'Clean' EXIT
-	Mount_device
-	Do_snapshot
-	Warn_user
-}
-
-Main "${@:-}"