2 * Copyright (c) 2003-2007 Tim Kientzle
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 __FBSDID("$FreeBSD$");
31 int fd = open(fn, O_RDWR | O_CREAT, 0644);
32 failure("Couldn't create file '%s', fd=%d, errno=%d (%s)\n",
33 fn, fd, errno, strerror(errno));
35 return (0); /* Failure. */
37 return (1); /* Success */
40 DEFINE_TEST(test_strip_components)
44 assertEqualInt(0, mkdir("d0", 0755));
45 assertEqualInt(0, chdir("d0"));
46 assertEqualInt(0, mkdir("d1", 0755));
47 assertEqualInt(0, mkdir("d1/d2", 0755));
48 assertEqualInt(0, mkdir("d1/d2/d3", 0755));
49 assertEqualInt(1, touch("d1/d2/f1"));
50 assertEqualInt(0, link("d1/d2/f1", "l1"));
51 assertEqualInt(0, link("d1/d2/f1", "d1/l2"));
52 assertEqualInt(0, symlink("d1/d2/f1", "s1"));
53 assertEqualInt(0, symlink("d2/f1", "d1/s2"));
54 assertEqualInt(0, chdir(".."));
56 assertEqualInt(0, systemf("%s -cf test.tar d0", testprog));
58 assertEqualInt(0, mkdir("target", 0755));
59 assertEqualInt(0, systemf("%s -x -C target --strip-components 2 "
60 "-f test.tar", testprog));
62 failure("d0/ is too short and should not get restored");
63 assertEqualInt(-1, lstat("target/d0", &st));
64 failure("d0/d1/ is too short and should not get restored");
65 assertEqualInt(-1, lstat("target/d1", &st));
66 failure("d0/d1/s2 is a symlink to something that won't be extracted");
67 #if !defined(_WIN32) || defined(__CYGWIN__)
68 assertEqualInt(-1, stat("target/s2", &st));
70 skipping("symlink with stat()");
72 assertEqualInt(0, lstat("target/s2", &st));
73 failure("d0/d1/d2 should be extracted");
74 assertEqualInt(0, lstat("target/d2", &st));
77 * This next is a complicated case. d0/l1, d0/d1/l2, and
78 * d0/d1/d2/f1 are all hardlinks to the same file; d0/l1 can't
79 * be extracted with --strip-components=2 and the other two
80 * can. Remember that tar normally stores the first file with
81 * a body and the other as hardlink entries to the first
82 * appearance. So the final result depends on the order in
83 * which these three names get archived. If d0/l1 is first,
84 * none of the three can be restored. If either of the longer
85 * names are first, then the two longer ones can both be
88 * The tree-walking code used by bsdtar always visits files
89 * before subdirectories, so bsdtar's behavior is fortunately
90 * deterministic: d0/l1 will always get stored first and the
91 * other two will be stored as hardlinks to d0/l1. Since
92 * d0/l1 can't be extracted, none of these three will be
95 * It may be worth extending this test to force a particular
96 * archiving order so as to exercise both of the cases described
99 * Of course, this is all totally different for cpio and newc
100 * formats because the hardlink management is different.
101 * TODO: Rename this to test_strip_components_tar and create
102 * parallel tests for cpio and newc formats.
104 failure("d0/l1 is too short and should not get restored");
105 assertEqualInt(-1, lstat("target/l1", &st));
106 failure("d0/d1/l2 is a hardlink to file whose name was too short");
107 assertEqualInt(-1, lstat("target/l2", &st));
108 failure("d0/d1/d2/f1 is a hardlink to file whose name was too short");
109 assertEqualInt(-1, lstat("target/d2/f1", &st));