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1 #!/bin/sh -p
2 #
3 # Simple replacement for tar(1), using cpio(1).
4 #
5 # Copyright (c) 1996 Joerg Wunsch
6 # All rights reserved.
7 #
8 # Redistribution and use in source and binary forms, with or without
9 # modification, are permitted provided that the following conditions
10 # are met:
11 # 1. Redistributions of source code must retain the above copyright
12 #    notice, this list of conditions and the following disclaimer.
13 # 2. Redistributions in binary form must reproduce the above copyright
14 #    notice, this list of conditions and the following disclaimer in the
15 #    documentation and/or other materials provided with the distribution.
16 #
17 # THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
18 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 # IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
21 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 #
28 # $FreeBSD$
29 #
30
31 #
32 # For use on the fixit floppy.  External programs required:
33 # cpio(1), find(1), test(1)
34 #
35
36
37 archive=${TAPE:-/dev/rsa0}
38 blocksize="20"
39 device=""
40 mode="none"
41 verbose=""
42
43 usage()
44 {
45         echo "usage: tar -{c|t|x} [-v] [-b blocksize] [-f archive] [files...]" 1>&2
46         exit 64         # EX_USAGE
47 }
48
49 #
50 # Prepend a hyphen to the first arg if necessary, so the traditional form
51 # ``tar xvf /dev/foobar'' will work, too.  More kludgy legacy forms are not
52 # supported however.
53 #
54
55 if [ $# -lt 1 ] ; then
56         usage
57 fi
58
59 case "$1" in
60         -*)     break
61                 ;;
62         *)      tmp="$1"
63                 shift
64                 set -- -$tmp "$@"
65                 ;;
66 esac
67
68 while getopts "ctxvb:f:" option
69 do
70         case $option in
71                 [ctx])
72                         if [ $mode = "none" ] ; then
73                                 mode=$option
74                         else
75                                 usage
76                         fi
77                         ;;
78                 v)
79                         verbose="-v"
80                         ;;
81                 b)
82                         blocksize="${OPTARG}"
83                         ;;
84                 f)
85                         archive="${OPTARG## }"
86                         ;;
87                 *)
88                         usage
89                         ;;
90         esac
91 done
92
93 shift $(($OPTIND - 1))
94
95 if [ "X${archive}" != "X-" ] ; then
96         device="-F ${archive}"
97 # else: use stdin or stdout, which is the default for cpio
98 fi
99
100 case $mode in
101         none)
102                 usage
103                 ;;
104         t)
105                 exec cpio -it $verbose $device --block-size="$blocksize" "$@"
106                 ;;
107         x)
108                 exec cpio -idmu $verbose $device --block-size="$blocksize" "$@"
109                 ;;
110         c)
111                 if [ $# -eq 0 ] ; then
112                         # use current dir -- slightly bogus
113                         set -- "."
114                 fi
115                 find "$@" -print |\
116                     cpio -o -H ustar $verbose $device --block-size="$blocksize"
117                 exit $?
118                 ;;
119 esac