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120 lines
2.7 KiB
Bash
120 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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# $FreeBSD$
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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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archive=${TAPE:-/dev/rsa0}
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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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