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/*-
* Copyright (c) 2003-2007 Tim Kientzle
* 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 AUTHOR(S) ``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 AUTHOR(S) 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.
*/
#include "test.h"
__FBSDID("$FreeBSD: src/usr.bin/tar/test/test_strip_components.c,v 1.2 2008/11/10 05:24:13 kientzle Exp $");
static int
touch(const char *fn)
{
FILE *f = fopen(fn, "w");
failure("Couldn't create file '%s', errno=%d (%s)\n",
fn, errno, strerror(errno));
if (!assert(f != NULL))
return (0); /* Failure. */
fclose(f);
return (1); /* Success */
}
DEFINE_TEST(test_strip_components)
{
assertMakeDir("d0", 0755);
assertChdir("d0");
assertMakeDir("d1", 0755);
assertMakeDir("d1/d2", 0755);
assertMakeDir("d1/d2/d3", 0755);
assertEqualInt(1, touch("d1/d2/f1"));
assertMakeHardlink("l1", "d1/d2/f1");
assertMakeHardlink("d1/l2", "d1/d2/f1");
if (canSymlink()) {
assertMakeSymlink("s1", "d1/d2/f1");
assertMakeSymlink("d1/s2", "d2/f1");
}
assertChdir("..");
assertEqualInt(0, systemf("%s -cf test.tar d0", testprog));
assertMakeDir("target", 0755);
assertEqualInt(0, systemf("%s -x -C target --strip-components 2 "
"-f test.tar", testprog));
failure("d0/ is too short and should not get restored");
assertFileNotExists("target/d0");
failure("d0/d1/ is too short and should not get restored");
assertFileNotExists("target/d1");
failure("d0/d1/s2 is a symlink to something that won't be extracted");
/* If platform supports symlinks, target/s2 is a broken symlink. */
/* If platform does not support symlink, target/s2 doesn't exist. */
assertFileNotExists("target/s2");
if (canSymlink())
assertIsSymlink("target/s2", "d2/f1");
failure("d0/d1/d2 should be extracted");
assertIsDir("target/d2", -1);
/*
* This next is a complicated case. d0/l1, d0/d1/l2, and
* d0/d1/d2/f1 are all hardlinks to the same file; d0/l1 can't
* be extracted with --strip-components=2 and the other two
* can. Remember that tar normally stores the first file with
* a body and the other as hardlink entries to the first
* appearance. So the final result depends on the order in
* which these three names get archived. If d0/l1 is first,
* none of the three can be restored. If either of the longer
* names are first, then the two longer ones can both be
* restored.
*
* The tree-walking code used by bsdtar always visits files
* before subdirectories, so bsdtar's behavior is fortunately
* deterministic: d0/l1 will always get stored first and the
* other two will be stored as hardlinks to d0/l1. Since
* d0/l1 can't be extracted, none of these three will be
* extracted.
*
* It may be worth extending this test to force a particular
* archiving order so as to exercise both of the cases described
* above.
*
* Of course, this is all totally different for cpio and newc
* formats because the hardlink management is different.
* TODO: Rename this to test_strip_components_tar and create
* parallel tests for cpio and newc formats.
*/
failure("d0/l1 is too short and should not get restored");
assertFileNotExists("target/l1");
failure("d0/d1/l2 is a hardlink to file whose name was too short");
assertFileNotExists("target/l2");
failure("d0/d1/d2/f1 is a hardlink to file whose name was too short");
assertFileNotExists("target/d2/f1");
}
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