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