codekingpro/portable-devtools

1#! /bin/sh2# Make backups.3 4# Copyright 2004-2006, 2013, 2019 Free Software Foundation5 6# This file is part of GNU tar.7 8# GNU tar is free software; you can redistribute it and/or modify9# it under the terms of the GNU General Public License as published by10# the Free Software Foundation; either version 3 of the License, or11# (at your option) any later version.12 13# GNU tar is distributed in the hope that it will be useful,14# but WITHOUT ANY WARRANTY; without even the implied warranty of15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the16# GNU General Public License for more details.17 18# You should have received a copy of the GNU General Public License19# along with this program.  If not, see <http://www.gnu.org/licenses/>.20 21# Load library routines22SYSCONFDIR=${SYSCONFDIR-/usr/etc}23. ${LIBDIR-/usr/lib/tar}/backup.sh24 25DUMP_LEVEL=026TIME=27NOW=`now`28 29usage() {30    	cat - <<EOF31usage: $PROGNAME [OPTIONS] [WHEN]32Options are:33 34   -l, --level=LEVEL       Do backup level LEVEL (default $DUMP_LEVEL).35   -f, --force             Force backup even if today's log file already36                           exists.37   -v, --verbose[=LEVEL]   Set verbosity level. Default 100.38   -t, --time=TIME         Wait till TIME, then do backup.39 40Informational options:41   -h, --help              Display this help message.42   -V, --version           Display program version.43 44   Optional argument WHEN is for backward compatibility only. It has been45   superseded by --time option.46   TIME argument can be one of:47 48	now          --     do backup immediately.49	HH           --     do backup at HH hours.50	HH:MM        --     do backup at HH:MM.51 52Send bug reports to bug-tar@gnu.org.53EOF54}55 56# For compatibility with previous versions, deduce the backup level57# from the command name58case "$PROGNAME" in59level-[0-9]) DUMP_LEVEL=`expr $PROGNAME : 'level-\([0-9][0-9]*\)'`;;60esac61 62for opt63do64  if [ -z "$prev" ]; then65      option=$opt66      optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`67  else68      option="${prev}=$opt"69      prev=""70      optarg=$opt71  fi72  case $option in73  --l=*|--le=*|--lev=*|--leve=*|--level=*)74         DUMP_LEVEL=$optarg75	 ;;76  -l?*)  DUMP_LEVEL=`expr $option : '-l\(.*\)'`;;77  -l|--l|--le|--lev|--leve|--level)78	 prev=--level79	 ;;80  --verb=*|--verbo=*|--verbos=*|--verbose=*)81         VERBOSE=$optarg82	 ;;83  -v|--verb|--verbo|--verbos|--verbose)84         VERBOSE=10085	 ;;86  -v*)   VERBOSE=`expr $option : '-v\(.*\)'`;;87  --t=*|--ti=*|--tim=*|--time=*)88         TIME=$optarg89	 ;;90  -t?*)  TIME=`expr $option : '-t\(.*\)'`;;91  -t|--t|--ti|--tim|--time)92	 prev=--time93    	 ;;94  -V|--v|--ve|--ver|--vers|--versi|--versio|--version)95    	 echo "backup (GNU tar) 1.35"96	 license97	 exit;;98  -h|--h|--he|--hel|--help)99	 usage100	 exit;;101  -f|--f|--fo|--for|--forc|--force)102      	 FORCE=yes103	 ;;104  *)     if [ "x$TIME" != "x" ]; then105            bailout "Extra argument. Try $PROGNAME --help for more info."106         else107            TIME=$option108         fi;;109  esac110done111 112if [ "x$TIME" = x ]; then113    bailout "No backup time specified. Try $PROGNAME --help for more info."114    exit 1115fi116 117init_backup118 119# Maybe sleep until around specified or default hour.120wait_time $TIME121 122if [ $DUMP_LEVEL -ne 0 ]; then123    PREV_LEVEL=`expr $DUMP_LEVEL - 1`124    PREV_DATE=`ls -t ${LOGPATH}/log-*-level-$PREV_LEVEL|125                head -n 1|126		sed "s,${LOGPATH}/log-\(.*\)-level.*,\1,"`127    if [ "x$PREV_DATE" = x ]; then128        bailout "Can't determine date of the previous backup"129    fi130    message 0 "Backup from $PREV_DATE to $NOW"131fi132 133# start doing things134 135# Make sure the log file did not already exist.  Create it.136 137if [ "x$FORCE" = "xyes" ]; then138    rm ${LOGFILE}139fi140 141if [ -f "${LOGFILE}" ] ; then142   bailout "Log file ${LOGFILE} already exists."143else144   touch "${LOGFILE}"145fi146message 1 "Ready for backup."147message 10 "TAR invocation: $TAR_PART1"148message 20 "Variables:"149message 20 "BACKUP_DIRS=$BACKUP_DIRS"150message 20 "BACKUP_FILES=$BACKUP_FILES"151 152# The bunch of commands below is run in a subshell for which all output is153# piped through 'tee' to the logfile.  Doing this, instead of having154# multiple pipelines all over the place, is cleaner and allows access to155# the exit value from various commands more easily.156(157 message 1 "preparing tapes"158 if ! $MT_BEGIN "${TAPE_FILE}"; then159    echo >&2 "$0: tape initialization failed"160    exit 1161 fi 162 rm -f "${VOLNO_FILE}"163 164 message 1 "processing backup directories"165 166 set - ${BACKUP_DIRS}167 while [ $# -ne 0 ] ; do168     date="`date`"169     fs="`echo \"${1}\" | sed -e 's/^.*://'`"170     fs=`root_fs $fs`171     fsname="`echo \"${1}\" | sed -e 's/\//:/g'`"172     remotehost="`expr \"${1}\" : '\([^/][^/]*\):.*'`"173     if [ -z "$remotehost" ]; then174	 remotehost=$localhost175     fi176 177     echo "Backing up ${1} at ${date}"178     message 10 "fs=$fs"179     message 10 "fsname=$fsname"180     message 10 "remotehost=$remotehost"181     if [ $DUMP_LEVEL -eq 0 ]; then182	 make_level_log ${remotehost}183     else184	 echo "Last `prev_level` dump on this filesystem was on $PREV_DATE"185	 remote_run "${remotehost}" cp "`level_log_name ${fsname} $PREV_LEVEL`" "`level_log_name temp`"186     fi187 188     ${DUMP_BEGIN-:} $DUMP_LEVEL $remotehost $fs $fsname189     backup_host ${remotehost} \190                "--listed=`level_log_name temp`" \191                "--label='`print_level` backup of ${fs} on ${remotehost} at ${NOW}'" \192		-C ${fs} .193 194     # 'rsh' doesn't exit with the exit status of the remote command.  What195     # stupid lossage.  TODO: think of a reliable workaround.196     if [ $? -ne 0 ] ; then197	 echo "$0: backup of ${1} failed." 1>&2198         # I'm assuming that the tar will have written an empty199         # file to the tape, otherwise I should do a cat here.200     else201         flush_level_log ${remotehost} ${fsname}202     fi203     ${MT_STATUS} "$TAPE_FILE"204     ${DUMP_END-:} $DUMP_LEVEL $remotehost $fs $fsname205     echo "sleeping ${SLEEP_TIME} seconds"206     sleep ${SLEEP_TIME}207     shift208 done209 210 # Dump any individual files requested.211 212 if [ "x${BACKUP_FILES}" != "x" ] ; then213     message 1 "processing individual files"214 215     date="`date`"216 217     if [ $DUMP_LEVEL -eq 0 ]; then218         make_level_log $localhost219     else220	 echo "Last `prev_level` dump on this filesystem was on $PREV_DATE"221	 remote_run "${localhost}" cp "`level_log_name MISC $PREV_LEVEL`" "`level_log_name temp`"222     fi223 224     echo "Backing up miscellaneous files at ${date}"225 226     ${DUMP_BEGIN-:} $DUMP_LEVEL $localhost MISC MISC227     backup_host $localhost \228               "--listed=`level_log_name temp`"\229               "--label='`print_level` backup of miscellaneous files at ${NOW}'" \230               ${BACKUP_FILES}231 232     if [ $? -ne 0 ] ; then233	 echo "Backup of miscellaneous files failed."234	 # I'm assuming that the tar will have written an empty235	 # file to the tape, otherwise I should do a cat here.236     else237	 flush_level_log $localhost MISC238     fi239     ${MT_STATUS} "$TAPE_FILE"240     ${DUMP_END-:} $DUMP_LEVEL $localhost MISC MISC241 else242     echo "No miscellaneous files specified"243 fi244 message 1 "final cleanup"245 246 $MT_REWIND "${TAPE_FILE}"247 $MT_OFFLINE "${TAPE_FILE}"248 echo "."249) 2>&1 | tee -a "${LOGFILE}"250RC=$?251 252if test "${ADMINISTRATOR}" != NONE; then253     echo "Sending the dump log to ${ADMINISTRATOR}"254     mail -s "Results of backup started ${startdate}" ${ADMINISTRATOR} < "${LOGFILE}"255fi256exit $RC257# EOF258