#!/bin/sh
# Copyright (c) 2007 Tim Kientzle
# All rights reserved.
#
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# 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
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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# $FreeBSD: src/usr.bin/tar/test/test-overwrite.sh,v 1.1 2007/03/11 10:36:42 kientzle Exp $

echo "Test overwrite avoidance"
. `dirname $0`/config.sh

# Create a file with some data.
# This ensures that test.tar actually has some data in it
# by the time tar tries to add it to itself.
dd if=/dev/urandom of=a bs=1k count=100 >/dev/null 2>&1

# Now try to implicitly add archive to itself
${BSDTAR} -cf test.tar . || echo XXX FAILED XXX

# Create another file
dd if=/dev/urandom of=b bs=1k count=100 >/dev/null 2>&1

# Try again.
${BSDTAR} -cf test.tar . || echo XXX FAILED XXX

# Extract the archive and check that the two files got archived, despite the warning
mkdir compare
cd compare
${BSDTAR} -xf ../test.tar
cmp a ../a || echo XXX a didn't archive correctly XXX
cmp b ../b || echo XXX b didn't archive correctly XXX

# TODO: Test overwrite avoidance on extract