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
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9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
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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,
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23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 __FBSDID("$FreeBSD$");
29 * Background: There are two written standards for the tar file format.
30 * The first is the POSIX 1988 "ustar" format, the second is the 2001
31 * "pax extended" format that builds on the "ustar" format by adding
32 * support for generic additional attributes. Buried in the details
33 * is one frustrating incompatibility: The 1988 standard says that
34 * tar readers MUST ignore the size field on hardlink entries; the
35 * 2001 standard says that tar readers MUST obey the size field on
36 * hardlink entries. libarchive tries to navigate this particular
37 * minefield by using auto-detect logic to guess whether it should
38 * or should not obey the size field.
40 * This test tries to probe the boundaries of such handling; the test
41 * archives here were adapted from real archives created by real
42 * tar implementations that are (as of early 2008) apparently still
47 test_compat_tar_hardlink_1(void)
49 char name[] = "test_compat_tar_hardlink_1.tar";
50 struct archive_entry *ae;
53 assert((a = archive_read_new()) != NULL);
54 assertEqualIntA(a, ARCHIVE_OK, archive_read_support_filter_all(a));
55 assertEqualIntA(a, ARCHIVE_OK, archive_read_support_format_all(a));
56 extract_reference_file(name);
57 assertEqualIntA(a, ARCHIVE_OK, archive_read_open_filename(a, name, 10240));
59 /* Read first entry, which is a regular file. */
60 assertEqualIntA(a, ARCHIVE_OK, archive_read_next_header(a, &ae));
61 assertEqualString("xmcd-3.3.2/docs_d/READMf",
62 archive_entry_pathname(ae));
63 assertEqualString(NULL, archive_entry_hardlink(ae));
64 assertEqualInt(321, archive_entry_size(ae));
65 assertEqualInt(1082575645, archive_entry_mtime(ae));
66 assertEqualInt(1851, archive_entry_uid(ae));
67 assertEqualInt(3, archive_entry_gid(ae));
68 assertEqualInt(0100444, archive_entry_mode(ae));
70 /* Read second entry, which is a hard link at the end of archive. */
71 assertEqualIntA(a, ARCHIVE_OK, archive_read_next_header(a, &ae));
72 assertEqualString("xmcd-3.3.2/README",
73 archive_entry_pathname(ae));
75 "xmcd-3.3.2/docs_d/READMf",
76 archive_entry_hardlink(ae));
77 assertEqualInt(0, archive_entry_size(ae));
78 assertEqualInt(1082575645, archive_entry_mtime(ae));
79 assertEqualInt(1851, archive_entry_uid(ae));
80 assertEqualInt(3, archive_entry_gid(ae));
81 assertEqualInt(0100444, archive_entry_mode(ae));
83 /* Verify the end-of-archive. */
85 * This failed in libarchive 2.4.12 because the tar reader
86 * tried to obey the size field for the hard link and ended
87 * up running past the end of the file.
89 assertEqualIntA(a, ARCHIVE_EOF, archive_read_next_header(a, &ae));
91 /* Verify that the format detection worked. */
92 assertEqualInt(archive_filter_code(a, 0), ARCHIVE_FILTER_NONE);
93 assertEqualInt(archive_format(a), ARCHIVE_FORMAT_TAR);
95 assertEqualInt(ARCHIVE_OK, archive_read_close(a));
96 assertEqualInt(ARCHIVE_OK, archive_read_free(a));
99 DEFINE_TEST(test_compat_tar_hardlink)
101 test_compat_tar_hardlink_1();