# On Debian systems, the complete text of the GNU General Public License
# can be found in /usr/share/common-licenses/GPL-2 file.
+# declare here two vars from /etc/live.conf because of "set -u"
+ROOTSNAP=""
+HOMESNAP=""
+
set -eu
. /usr/share/initramfs-tools/scripts/live-helpers
-. /etc/live.conf
+
+LIVE_CONF="/etc/live.conf"
+. "${LIVE_CONF}"
export USERNAME USERFULLNAME HOSTNAME
-PROGRAM="$(basename $0)"
+EXECUTABLE="${0}"
+PROGRAM=$(basename "${EXECUTABLE}")
# Needs to be available at run and reboot time
SAFE_TMPDIR="/live"
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]"
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\", \"jffs2\" or \"cpio\".gz archive (default: ${SNAP_TYPE})"
echo
echo "Look at live-snapshot(1) man page for more information."
exit 0
}
+Try_refresh ()
+{
+ FOUND=""
+ if [ -n "${ROOTSNAP}" ]; then
+ "${EXECUTABLE}" --resync-string="${ROOTSNAP}"
+ FOUND="Yes"
+ fi
+
+ if [ -n "${HOMESNAP}" ]; then
+ "${EXECUTABLE}" --resync-string="${HOMESNAP}"
+ FOUND="Yes"
+ fi
+
+ if [ -z "${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="$(getopt --longoptions cow:,device:,output,resync-string:,type:,help,usage,version --name=${PROGRAM} --options c:d:o:t:r:,h,u,v --shell sh -- ${ARGS})"
+ ARGUMENTS="$(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}"
break
;;
+ -f|--refresh)
+ Try_refresh
+ exit 0
+ ;;
+
-h|--help)
Help
;;
usato internamente nelle sincronizzazioni dallo script di init di
live-initramfs. Il formato pu\`o cambiare, usatelo a vostro rischio.
+ -f, --refresh::
+
+scatena la stessa operazione che verrebbe fatta al reboot o all'halt della
+macchina, provando a fare il resync degli snapshot trovati al boot, usabile
+per salvare le modifiche in vista di un crash o di una mancanza di corrente.
+
-t, --type **TYPE**::
il tipo pu`o essere "cpio", "squashfs" o "ext2".