ed228eb646
tar(1), but actually uses cpio(1). Many people are getting confused about the lack of a tar on the fixit floppy, and simply don't know that cpio can basically handle tar format fine (or they simply don't know how to invoke cpio).
121 lines
2.7 KiB
Bash
121 lines
2.7 KiB
Bash
#!/bin/sh -p
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#
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# Simple replacement for tar(1), using cpio(1).
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#
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# Copyright (c) 1996 Joerg Wunsch
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY EXPRESS OR
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# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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# IN NO EVENT SHALL THE DEVELOPERS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#
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# For use on the fixit floppy. External programs required:
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# cpio(1), find(1), test(1)
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#
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#
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# $Id$
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#
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archive=${TAPE:-/dev/rst0}
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blocksize="20"
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device=""
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mode="none"
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verbose=""
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usage()
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{
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echo "usage: tar -{c|t|x} [-v] [-b blocksize] [-f archive] [files...]" 1>&2
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exit 64 # EX_USAGE
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}
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#
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# Prepend a hyphen to the first arg if necessary, so the traditional form
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# ``tar xvf /dev/foobar'' will work, too. More kludgy legacy forms are not
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# supported however.
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#
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if [ $# -lt 1 ] ; then
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usage
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fi
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case "$1" in
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-*) break
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;;
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*) tmp="$1"
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shift
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set -- -$tmp "$@"
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;;
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esac
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while getopts "ctxvb:f:" option
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do
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case $option in
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[ctx])
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if [ $mode = "none" ] ; then
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mode=$option
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else
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usage
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fi
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;;
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v)
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verbose="-v"
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;;
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b)
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blocksize="${OPTARG}"
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;;
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f)
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archive="${OPTARG## }"
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;;
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*)
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usage
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;;
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esac
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done
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shift $(($OPTIND - 1))
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if [ "X${archive}" != "X-" ] ; then
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device="-F ${archive}"
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# else: use stdin or stdout, which is the default for cpio
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fi
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case $mode in
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none)
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usage
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;;
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t)
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exec cpio -it $verbose $device --block-size="$blocksize" "$@"
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;;
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x)
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exec cpio -idmu $verbose $device --block-size="$blocksize" "$@"
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;;
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c)
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if [ $# -eq 0 ] ; then
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# use current dir -- slightly bogus
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set -- "."
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fi
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find "$@" -print |\
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cpio -o -H ustar $verbose $device --block-size="$blocksize"
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exit $?
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;;
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esac
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