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., 59 Temple Place - Suite 330, Boston, MA
  18 # 02111-1307, USA.
  19
  20 # Load library routines
  21 SYSCONFDIR=${SYSCONFDIR-@sysconfdir@}
  22 . ${LIBPATH-@libexecdir@}/backup.sh
  23
  24 usage() {
  25         cat - <<EOF
  26 usage: $PROGNAME [OPTIONS] [PATTERN [PATTERN...]]
  27 Options are:
  28
  29    -l, --level=LEVEL       Start restoring from backup level LEVEL (default $DUMP_LEVEL).
  30    -v, --verbose[=LEVEL]   Set verbosity level. Default 100.
  31
  32 Informational options:
  33    -h, --help              Display this help message.
  34    -L, --license           Display program license.
  35    -V, --version           Display program version.
  36
  37 Send bug reports to @PACKAGE_BUGREPORT@.
  38 EOF
  39 }
  40
  41 unset PATTERN
  42 DUMP_LEVEL=0
  43 CMDLINE="$0 $@"
  44
  45 for opt
  46 do
  47   if [ -z "$prev" ]; then
  48       option=$opt
  49       optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
  50   else
  51       option="${prev}=$opt"
  52       prev=""
  53       optarg=$opt
  54   fi
  55   case $option in
  56   --l=*|--le=*|--lev=*|--leve=*|--level=*)
  57          DUMP_LEVEL=$optarg
  58          ;;
  59   -l|--l|--le|--lev|--leve|--level)
  60          prev=$option
  61          ;;
  62   --verb=*|--verbo=*|--verbos=*|--verbose=*)
  63          VERBOSE=$optarg
  64          ;;
  65   -v|--verb|--verbo|--verbos|--verbose)
  66          VERBOSE=100
  67          ;;
  68   -v*)   VERBOSE=`expr $option : "-v\(.*\)"`;;
  69   -V|--v|--ve|--ver|--vers|--versi|--versio|--version)
  70          echo "restore; @PACKAGE@ (@VERSION@)"
  71          exit 0;;
  72   -L|--li|--lic|--lice|--licen|--licens|--license)
  73          license
  74          exit;;
  75   -h|--h|--he|--hel|--help)
  76          usage
  77          exit;;
  78   -*) bailout "Unknown option $opt. Try $PROGNAME --help for more info.";;
  79   *)  if [ -z "$PATTERN" ]; then
  80          PATTERN=$opt
  81       else
  82          PATTERN="$PATTERN|$opt"
  83       fi
  84       ;;
  85   esac
  86 done
  87
  88 init_restore
  89 cat > $LOGFILE <<EOF
  90 This file contains any messages produced by $PROGNAME.
  91
  92 It was created by GNU $PROGNAME, from  @PACKAGE@ (@VERSION@).
  93 Invocation command line was
  94
  95   \$ $CMDLINE
  96
  97 EOF
  98
  99 restore_fs()
 100 {
 101     fs="`echo \"${1}\" | sed -e 's/^.*://'`"
 102     fsname="`echo \"${1}\" | sed -e 's/\//:/g'`"
 103     remotehost="`expr \"${1}\" : '\([^/][^/]*\):.*'`"
 104     if [ -z "$remotehost" ]; then
 105         remotehost=$localhost
 106     fi
 107     message 10 "fs=$fs"
 108     message 10 "fsname=$fsname"
 109     message 10 "remotehost=$remotehost"
 110
 111     LOGPAT="`level_log_name ${fsname} '[0-9]'`"
 112     PREFIX="`level_log_name ${fsname} ''`"
 113     message 10 LOGPAT=$LOGPAT
 114     message 10 PREFIX=$PREFIX
 115     LEVELS=`remote_run "${remotehost}" ls $LOGPAT |
 116       sed "s,$PREFIX,," | sort -n`
 117     message 10 "LEVELS=$LEVELS"
 118
 119     echo "Starting restore of ${1} at level $DUMP_LEVEL."
 120     for level in $LEVELS
 121     do
 122       if [ $level -lt $DUMP_LEVEL ]; then
 123           message 10 "Skipping level $level"
 124           continue;
 125       fi
 126       message 10 "Restoring level $level"
 127
 128       DATE=`get_dump_time $level`
 129       FILE="`level_log_name ${fsname} ${level}`"
 130       message 10 "FILE=$FILE"
 131
 132       LABEL="`print_level $level` backup of ${fs} on ${remotehost} at ${DATE}"
 133       ${RESTORE_BEGIN-:} $level $remotehost $fs $fsname
 134       backup_host ${remotehost} \
 135                   "--listed=`level_log_name $fs $level`" \
 136                   "--label=\"$LABEL\"" \
 137                   -C ${ROOT_FS-/}$fs
 138       ${RESTORE_END-:} $level $remotehost $fs $fsname
 139     done
 140 }
 141
 142 restore_files()
 143 {
 144     LOGPAT="`level_log_name MISC '[0-9]'`"
 145     PREFIX="`level_log_name MISC ''`"
 146     message 10 LOGPAT=$LOGPAT
 147     message 10 PREFIX=$PREFIX
 148     LEVELS=`remote_run "${localhost}" ls $LOGPAT | sed "s,$PREFIX,," | sort -n`
 149     message 10 "LEVELS=$LEVELS"
 150
 151     echo "Starting restore of miscellaneous files at level $DUMP_LEVEL."
 152     for level in $LEVELS
 153     do
 154       if [ $level -lt $DUMP_LEVEL ]; then
 155           message 10 "Skipping level $level"
 156           continue;
 157       fi
 158       message 10 "Restoring level $level"
 159
 160       DATE=`get_dump_time $level`
 161       FILE="`level_log_name MISC ${level}`"
 162       message 10 "FILE=$FILE"
 163
 164       LABEL="`print_level $level` backup of miscellaneous files at ${DATE}"
 165       ${RESTORE_BEGIN-:} $level $localhost MISC MISC
 166       backup_host ${localhost} \
 167                   "--listed=`level_log_name MISC $level`" \
 168                   "--label=\"$LABEL\"" \
 169                   -C ${ROOT_FS-/} $@
 170       ${RESTORE_END-:} $level $localhost MISC MISC
 171     done
 172 }
 173
 174 # Operation Overwiew:
 175 #
 176 # 1. Determine the time of the last backup
 177 # 2. Create list of incremental listings to process
 178 # 3. For each filesystem:
 179 #  3.1. Start at the requested dump level (default 0) and proceed up to
 180 #       the last available level:
 181 #   3.1.1 Deduce the volume label
 182 #   3.1.2. Invoke [rsh] tar --listed=FILE --label=LABEL [opts] -xf $TAPE_FILE
 183 # 4. End
 184
 185 (message 1 "Preparing for restore"
 186
 187 message 1 "processing backup directories"
 188
 189 for dir in ${BACKUP_DIRS}
 190 do
 191     message 1 "Processing $dir"
 192     case $dir in
 193         ${PATTERN-*}) restore_fs $dir;;
 194     esac
 195 done
 196
 197 if [ "x${BACKUP_FILES}" != "x" ] ; then
 198     message 1 "processing miscellaneous files"
 199     if [ -z "$PATTERN" ]; then
 200         restore_files
 201     else
 202         RESTORE_FILES=""
 203         for file in ${BACKUP_FILES}
 204         do
 205           rel_file=`expr $file : '/\(.*\)'`
 206           case $file in
 207               $PATTERN) if [ -z "$RESTORE_FILES" ]; then
 208                            RESTORE_FILES="$rel_file"
 209                         else
 210                            RESTORE_FILES="$RESTORE_FILES $rel_file"
 211                         fi;;
 212           esac
 213         done
 214         [ -z "$RESTORE_FILES" ] || restore_files $RESTORE_FILES
 215     fi
 216
 217 fi) 2>&1 | tee -a "${LOGFILE}"
 218
 219 # EOF
 220
 221
 222
 223
 224