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Dogcows Code - chaz/tar/blob - scripts/backup.sh
2 # This program is part of GNU tar
3 # Copyright 2004, Free Software Foundation
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 1, or (at your option)
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
20 PROGNAME
=`basename $0`
21 CONFIGPATH
="$SYSCONFDIR/backup"
22 REMOTEBACKUPDIR
="$SYSCONFDIR/tar-backup"
23 CONFIGFILE
=${CONFIGPATH}/backup
-specs
24 DIRLIST
=${CONFIGPATH}/dirs
25 FILELIST
=${CONFIGPATH}/files
26 LOGPATH
=${CONFIGPATH}/log
27 LIBPATH
=/usr
/libexec
/backup
29 # Default functions for running various magnetic tape commands
46 # The main configuration file may override any of these variables
52 # Insure `mail' is in PATH.
53 PATH
="/usr/ucb:${PATH}"
55 # Put startdate in the subject line of mailed report, since if it happens
56 # to run longer than 24 hours (as may be the case if someone forgets to put
57 # in the next volume of the tape in adequate time), the backup date won't
58 # appear too misleading.
62 localhost
="`hostname | sed -e 's/\..*//' | tr A-Z a-z`"
64 # Produce a diagnostic output
66 if [ "$VERBOSE" != "" ]; then
67 if [ $VERBOSE -ge $1 ]; then
76 echo "$PROGNAME: $*" >&2
80 # Bail out if we don't have root privileges.
83 bailout
"The backup must be run as root or else some files will fail to be dumped."
88 echo "Directory $1 is not found." >&2
90 The following directories and files are needed for the backup to function:
92 1. Directory with configuration files and file lists:
94 2. Directory for backup log files
96 3. Main configuration file
99 Please, create these and invoke the script again.
104 # Check if the necessary directories exist
105 if [ ! -d $CONFIGPATH ]; then
109 if [ ! -d $LOGPATH ]; then
110 if mkdir $LOGPATH; then
117 # Get the values of BACKUP_DIRS, BACKUP_FILES, and other variables.
118 if [ ! -r $CONFIGFILE ]; then
119 echo "$PROGNAME: cannot read $CONFIGFILE. Stop." >&2
124 # Environment sanity check
128 if [ x
"${ADMINISTRATOR}" = x
]; then
129 bailout
"ADMINISTRATOR not defined"
132 [ x
"$TAR" = x
] && TAR
=tar
133 [ x
"$SLEEP_TIME" = x
] && SLEEP_TIME
=60
135 if [ x
$VOLNO_FILE = x
]; then
136 bailout
"VOLNO_FILE not specified"
139 if [ -r $DIRLIST ]; then
140 BACKUP_DIRS
="$BACKUP_DIRS `cat $DIRLIST`"
142 if [ -r $FILELIST ]; then
143 BACKUP_FILES
="$BACKUP_FILES `cat $FILELIST`"
146 if [ \
( x
"$BACKUP_DIRS" = x \
) -a \
( x
"$BACKUP_FILES" = x \
) ]; then
147 bailout
"Neither BACKUP_DIRS nor BACKUP_FILES specified"
150 TAR_PART1
="${TAR} -c --format=gnu --multi-volume --one-file-system --sparse --volno-file=${VOLNO_FILE}"
151 if [ "x$XLIST" != x
]; then
152 TAR_PART1
="${TAR_PART1} \`test -r $REMOTEBACKUPDIR/$XLIST && echo \"--exclude-from $REMOTEBACKUPDIR/$XLIST\"\`"
154 if [ "$RSH_COMMAND" != "" ]; then
155 TAR_PART1
="${TAR_PART1} --rsh-command=$RSH_COMMAND"
157 if [ "$RSH" = "" ]; then
160 if [ x
$BLOCKING != x
]; then
161 TAR_PART1
="${TAR_PART1} --blocking=${BLOCKING}"
164 # Only use --info-script if DUMP_REMIND_SCRIPT was defined in backup-specs
165 if [ "x${DUMP_REMIND_SCRIPT}" != "x" ]; then
166 TAR_PART1
="${TAR_PART1} --info-script='${DUMP_REMIND_SCRIPT}'"
169 # Logfile name should be in the form ``log-1993-03-18-level-0''
170 # They go in the directory `@sysconfdir@/log'.
171 # i.e. year-month-date. This format is useful for sorting by name, since
172 # logfiles are intentionally kept online for future reference.
173 LOGFILE
="${LOGPATH}/log-`now`-level-${DUMP_LEVEL}"
175 export POSIXLY_CORRECT
179 if [ "${1}" != "now" ]; then
180 if [ "${1}x" != "x" ]; then
183 spec
="${BACKUP_HOUR}"
186 pausetime
="`date | awk -v spec=\"${spec}\" '
188 split(spec, time, ":")
192 diff = 3600 * (time[1] - now[1]) + 60 * (time[2] - now[2]);
198 echo "${SLEEP_MESSAGE}"
204 echo "$REMOTEBACKUPDIR/${1}.level-${2-$DUMP_LEVEL}"
207 # Prepare a temporary level logfile
208 # usage: make_level_log HOSTNAME
210 if [ "z${localhost}" != "z$1" ] ; then
211 $RSH "$1" mkdir $REMOTEBACKUPDIR > /dev
/null
2>&1
212 $RSH "$1" rm -f `level_log_name temp`
214 mkdir $REMOTEBACKUPDIR > /dev
/null
2>&1
215 rm -f `level_log_name temp`
219 # Rename temporary log
220 # usage: flush_level_log HOSTNAME FSNAME
222 message
10 "RENAME: `level_log_name temp` --> `level_log_name $2`"
223 if [ "z${localhost}" != "z$1" ] ; then
224 $RSH "$1" mv -f `level_log_name temp` "`level_log_name $2`"
226 mv -f `level_log_name temp` "`level_log_name $2`"
230 # Do actual backup on a host
231 # usage: backup_host HOSTNAME [TAR_ARGUMENTS]
233 message
10 "ARGS: $@"
236 if [ "z${localhost}" != "z$rhost" ] ; then
237 $RSH "$rhost" ${TAR_PART1} -f "${localhost}:${TAPE_FILE}" $@
239 # Using `sh -c exec' causes nested quoting and shell substitution
240 # to be handled here in the same way rsh handles it.
241 CMD
="exec ${TAR_PART1} -f \"${TAPE_FILE}\" $@"
242 message
10 "CMD: $CMD"
249 if [ ${1-$DUMP_LEVEL} -eq 0 ]; then
252 echo "Level ${1-$DUMP_LEVEL}"
257 print_level
`expr $DUMP_LEVEL - 1` | tr A
-Z a
-z
263 message
10 "REMOTE $1: $@"
264 if [ "x$rhost" != "x${localhost}" ] ; then
273 This program is part of GNU tar
274 Copyright 2004, Free Software Foundation
276 This program is free software; you can redistribute it and/or modify
277 it under the terms of the GNU General Public License as published by
278 the Free Software Foundation; either version 1, or (at your option)
281 This program is distributed in the hope that it will be useful,
282 but WITHOUT ANY WARRANTY; without even the implied warranty of
283 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
284 GNU General Public License for more details.
286 You should have received a copy of the GNU General Public License
287 along with this program; if not, write to the Free Software
288 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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