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