aboutsummaryrefslogtreecommitdiff
path: root/restore.in
blob: ebcb3bc83cb6564f54a28bc3fcd5ad5eddda2ac7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
#! /bin/bash

libdir=@LIBDIR@/backup
set -e
. $libdir/common.sh
set +e

load_config
taroptions="$backup_tar_options $backup_rsh_command"

# Options
root=/
verbose=
logfile=
dry_run=
listonly=
confirm=1

getyn() {
  echo -n "$0:" $* " [Y/n]? "
  read
  case $REPLY in
  ''|y*|Y*) REPLY=y;;
  *) REPLY=n;;
  esac
}

help() {
  cat <<EOT
usage: restore [OPTIONS] [ITEM [ITEM...]]
restores this system from a backup

OPTIONS:
  -c, --confirm        do not ask for confirmation; run straight into restoring
  -C, --directory DIR  restore into directory DIR instead of $root
  -v, --verbose        increase verbosity
  -n, --dry-run        do nothing, print what would have been done
  -t, --list           list archives, instead of extracting
  -l, --logfile FILE   log to FILE
  -L, --level N        set incremental dump level to stop at
  -R, --round N        use archives from incremental round N
  -W, --week N         use archives from week N
  -h, --help           produce this help list

Valid ITEMs are: $backup_items
EOT
  exit 0
}

while [ $# -ne 0 ]
do
  case $1 in
  -C|--directory) shift; root=$1;;
  -c|--confirm) confirm=0;;
  -v|--verbose) verbose="$verbose -v";;
  -t|--list) listonly=1;;
  -l|--logfile) shift; logfile=$1; confirm=0;;
  -n|--dry-run) dry_run=echo;;
  -h|--help) help;;
  -L|--level) shift; level=$1;;
  -R|--round) shift; round=$1;;
  -W|--week) shift; week=$1;;
  --) shift; break;;
  -*) echo >&2 "$0: unrecognized option $1"; exit 1;;
  *) break;;
  esac
  shift
done

if [ -z "$listonly" ]; then
  taroptions="$taroptions -x"
else
  taroptions="$taroptions -t"
fi    

# Collect items to be restored.
items=$*

test -z "$items" && items="$backup_items"

if [ -n "$logfile" ]; then
  confirm=0
  exec >>$logfile
  exec 2>&1
fi        

$prologue_hook
test -z "$epilogue_hook" && trap "$epilogue_hook" EXIT INT QUIT TERM

# Guess missing values
if [ -z "$week" ]; then
  hour=$(date +%H)
  if [ $hour -gt 6 ]; then
    week=$(date +%U)
  else  
    week=$(date -d yesterday +%U)
  fi
fi

if [ -z "$round" ]; then
  round=$(find $backup_archive_dir \
             -regex '.*-'$week'-[0-9][0-9]*-[0-9][0-9]*\..*' \
             -printf '%f\n' | 
           sed 's/.*-'$week'-\([0-9][0-9]*\)-[0-9][0-9]*\..*/\1/' | 
           sort +0 -1 | 
           tail -1)
fi

if [ -z "$level" ]; then
  level=$(find $backup_archive_dir \
             -regex '.*-'$week-$round'-[0-9][0-9]*\..*' \
             -printf '%f\n' | 
           sed 's/.*-'$week-$round'-\([0-9][0-9]*\)\..*/\1/' | 
           sort +0 -1 | 
           tail -1)
fi

echo "$0: target root directory $root"
echo "$0: items to be restored: $items"
echo "$0: restoring from week $week, round $round, level $level"

if [ $confirm -ne 0 ]; then
  getyn "Do you wish to proceed"
  test $REPLY = "n" && exit 0
fi

logit "started"

for item in $items
do
  eval type=\$${item}_type
  ${type}_restore $item
done

$epilogue_hook

logit "finished"


Return to:

Send suggestions and report system problems to the System administrator.