Dogcows Code - chaz/tar/blob - scripts/restore.in

   1 #! /bin/sh
   2 # This program is part of GNU tar
   3 # Copyright 2004, Free Software Foundation
   4 #
   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)
   8 # any later version.
   9 #
  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.
  14 #
  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., 51 Franklin Street, Fifth Floor, Boston, MA
  18 # 02110-1301, USA.
  19
  20 # Load library routines
  21 SYSCONFDIR=${SYSCONFDIR-@sysconfdir@}
  22 . ${LIBDIR-@libexecdir@}/backup.sh
  23
  24 usage() {
  25         cat - <<EOF
  26 usage: $PROGNAME [OPTIONS] [PATTERN [PATTERN...]]
  27 Options are:
  28
  29    -a, --all               Restore all filesystems.
  30    -l, --level=LEVEL       Start restoring from the given backup LEVEL
  31                            (default $DUMP_LEVEL).
  32    -v, --verbose[=LEVEL]   Set verbosity level. Default 100.
  33
  34 Informational options:
  35    -h, --help              Display this help message.
  36    -L, --license           Display program license.
  37    -V, --version           Display program version.
  38
  39 Send bug reports to @PACKAGE_BUGREPORT@.
  40 EOF
  41 }
  42
  43 unset PATTERN
  44 DUMP_LEVEL=0
  45 CMDLINE="$0 $@"
  46
  47 for opt
  48 do
  49   if [ -z "$prev" ]; then
  50       option=$opt
  51       optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
  52   else
  53       option="${prev}=$opt"
  54       prev=""
  55       optarg=$opt
  56   fi
  57   case $option in
  58   -a|--a|--al|--all)
  59          RESTORE_ALL=1
  60          ;;
  61   --l=*|--le=*|--lev=*|--leve=*|--level=*)
  62          DUMP_LEVEL=$optarg
  63          ;;
  64   -l|--l|--le|--lev|--leve|--level)
  65          prev=$option
  66          ;;
  67   --verb=*|--verbo=*|--verbos=*|--verbose=*)
  68          VERBOSE=$optarg
  69          ;;
  70   -v|--verb|--verbo|--verbos|--verbose)
  71          VERBOSE=100
  72          ;;
  73   -v*)   VERBOSE=`expr $option : "-v\(.*\)"`;;
  74   -V|--v|--ve|--ver|--vers|--versi|--versio|--version)
  75          echo "restore (@PACKAGE@ @VERSION@)"
  76          exit 0;;
  77   -L|--li|--lic|--lice|--licen|--licens|--license)
  78          license
  79          exit;;
  80   -h|--h|--he|--hel|--help)
  81          usage
  82          exit;;
  83   -*) bailout "Unknown option $opt. Try $PROGNAME --help for more info.";;
  84   *)  if [ -z "$PATTERN" ]; then
  85          PATTERN=$opt
  86       else
  87          PATTERN="$PATTERN|$opt"
  88       fi
  89       ;;
  90   esac
  91 done
  92
  93 if [ -z "$RESTORE_ALL" ]; then
  94         if [ -z "$PATTERN" ]; then
  95                 usage
  96                 exit;
  97         fi
  98 fi
  99
 100 init_restore
 101 cat > $LOGFILE <<EOF
 102 This file contains any messages produced by $PROGNAME.
 103
 104 It was created by GNU $PROGNAME, from  @PACKAGE@ (@VERSION@).
 105 Invocation command line was
 106
 107   \$ $CMDLINE
 108
 109 EOF
 110
 111 restore_fs()
 112 {
 113     fs="`echo \"${1}\" | sed -e 's/^.*://'`"
 114     fs=`root_fs $fs`
 115     fsname="`echo \"${1}\" | sed -e 's/\//:/g'`"
 116     remotehost="`expr \"${1}\" : '\([^/][^/]*\):.*'`"
 117     if [ -z "$remotehost" ]; then
 118         remotehost=$localhost
 119     fi
 120     message 10 "fs=$fs"
 121     message 10 "fsname=$fsname"
 122     message 10 "remotehost=$remotehost"
 123
 124     LOGPAT="`level_log_name ${fsname} '[0-9]'`"
 125     PREFIX="`level_log_name ${fsname} ''`"
 126     message 10 LOGPAT=$LOGPAT
 127     message 10 PREFIX=$PREFIX
 128     LEVELS=`remote_run "${remotehost}" ls $LOGPAT |
 129       sed "s,$PREFIX,," | sort -n`
 130     message 10 "LEVELS=$LEVELS"
 131
 132     echo "Starting restore of ${1} at level $DUMP_LEVEL."
 133     for level in $LEVELS
 134     do
 135       if [ $level -lt $DUMP_LEVEL ]; then
 136           message 10 "Skipping level $level"
 137           continue;
 138       fi
 139       message 10 "Restoring level $level"
 140
 141       DATE=`get_dump_time $level`
 142       FILE="`level_log_name ${fsname} ${level}`"
 143       message 10 "FILE=$FILE"
 144
 145       LABEL="`print_level $level` backup of ${fs} on ${remotehost} at ${DATE}"
 146       ${RESTORE_BEGIN-:} $level $remotehost $fs $fsname
 147       backup_host ${remotehost} \
 148                   "--listed=\"$FILE\"" \
 149                   "--label=\"$LABEL\"" \
 150                   -C $fs
 151       ${RESTORE_END-:} $level $remotehost $fs $fsname
 152     done
 153 }
 154
 155 restore_files()
 156 {
 157     LOGPAT="`level_log_name MISC '[0-9]'`"
 158     PREFIX="`level_log_name MISC ''`"
 159     message 10 LOGPAT=$LOGPAT
 160     message 10 PREFIX=$PREFIX
 161     LEVELS=`remote_run "${localhost}" ls $LOGPAT | sed "s,$PREFIX,," | sort -n`
 162     message 10 "LEVELS=$LEVELS"
 163
 164     echo "Starting restore of miscellaneous files at level $DUMP_LEVEL."
 165     for level in $LEVELS
 166     do
 167       if [ $level -lt $DUMP_LEVEL ]; then
 168           message 10 "Skipping level $level"
 169           continue;
 170       fi
 171       message 10 "Restoring level $level"
 172
 173       DATE=`get_dump_time $level`
 174       FILE="`level_log_name MISC ${level}`"
 175       message 10 "FILE=$FILE"
 176
 177       LABEL="`print_level $level` backup of miscellaneous files at ${DATE}"
 178       ${RESTORE_BEGIN-:} $level $localhost MISC MISC
 179       backup_host ${localhost} \
 180                   "--listed=\"$FILE\"" \
 181                   "--label=\"$LABEL\"" \
 182                   -C ${ROOT_FS-/} $@
 183       ${RESTORE_END-:} $level $localhost MISC MISC
 184     done
 185 }
 186
 187 # Operation Overwiew:
 188 #
 189 # 1. Determine the time of the last backup
 190 # 2. Create list of incremental listings to process
 191 # 3. For each filesystem:
 192 #  3.1. Start at the requested dump level (default 0) and proceed up to
 193 #       the last available level:
 194 #   3.1.1 Deduce the volume label
 195 #   3.1.2. Invoke [rsh] tar --listed=FILE --label=LABEL [opts] -xf $TAPE_FILE
 196 # 4. End
 197
 198 (message 1 "Preparing for restore"
 199
 200 message 1 "processing backup directories"
 201
 202 for dir in ${BACKUP_DIRS}
 203 do
 204     message 1 "Processing $dir"
 205     case $dir in
 206         ${PATTERN-*}) restore_fs $dir;;
 207     esac
 208 done
 209
 210 if [ "x${BACKUP_FILES}" != "x" ] ; then
 211     message 1 "processing miscellaneous files"
 212     if [ -z "$PATTERN" ]; then
 213         restore_files
 214     else
 215         RESTORE_FILES=""
 216         for file in ${BACKUP_FILES}
 217         do
 218           rel_file=`expr $file : '/\(.*\)'`
 219           case $file in
 220               $PATTERN) if [ -z "$RESTORE_FILES" ]; then
 221                            RESTORE_FILES="$rel_file"
 222                         else
 223                            RESTORE_FILES="$RESTORE_FILES $rel_file"
 224                         fi;;
 225           esac
 226         done
 227         [ -z "$RESTORE_FILES" ] || restore_files $RESTORE_FILES
 228     fi
 229
 230 fi) 2>&1 | tee -a "${LOGFILE}"
 231
 232 # EOF
 233
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 237