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freebsd-dev/lib/libarchive/test/test_write_disk_hardlink.c
Tim Kientzle e2421f7667 Merge from libarchive.googlecode.com: Mostly a bunch of 
corrections to the Windows support to reconcile differences
between Visual Studio and Cygwin.  Includes parts of
revisions 757, 774, 787, 815, 817, 819, 820, 844, and 886.

Of particular note, r886 overhauled the UTF-8/Unicode conversions to
work correctly regardless of whether the local system uses 16-bit
or 32-bit wchar_t.  (I assume that systems with 16-bit wchar_t
use UTF-16 and those with 32-bit wchar_t use UCS-4.)  This revision
also added a preference for wcrtomb() (which is thread-safe) on
platforms that support it.
2009-04-12 05:33:34 +00:00

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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("$FreeBSD$");
#if defined(_WIN32) && !defined(__CYGWIN__)
/* Execution bits, Group members bits and others bits do not work. */
#define UMASK 0177
#define E_MASK (~0177)
#else
#define UMASK 022
#define E_MASK (~0)
#endif
/*
* Exercise hardlink recreation.
*
* File permissions are chosen so that the authoritive entry
* has the correct permission and the non-authoritive versions
* are just writeable files.
*/
DEFINE_TEST(test_write_disk_hardlink)
{
#if ARCHIVE_VERSION_NUMBER < 1009000
skipping("archive_write_disk_hardlink tests");
#else
static const char data[]="abcdefghijklmnopqrstuvwxyz";
struct archive *ad;
struct archive_entry *ae;
struct stat st, st2;
/* Force the umask to something predictable. */
umask(UMASK);
/* Write entries to disk. */
assert((ad = archive_write_disk_new()) != NULL);
/*
* First, use a tar-like approach; a regular file, then
* a separate "hardlink" entry.
*/
/* Regular file. */
assert((ae = archive_entry_new()) != NULL);
archive_entry_copy_pathname(ae, "link1a");
archive_entry_set_mode(ae, S_IFREG | 0755);
archive_entry_set_size(ae, sizeof(data));
assertEqualIntA(ad, 0, archive_write_header(ad, ae));
assertEqualInt(sizeof(data),
archive_write_data(ad, data, sizeof(data)));
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
archive_entry_free(ae);
/* Link. Size of zero means this doesn't carry data. */
assert((ae = archive_entry_new()) != NULL);
archive_entry_copy_pathname(ae, "link1b");
archive_entry_set_mode(ae, S_IFREG | 0642);
archive_entry_set_size(ae, 0);
archive_entry_copy_hardlink(ae, "link1a");
assertEqualIntA(ad, 0, archive_write_header(ad, ae));
assertEqualInt(ARCHIVE_WARN,
archive_write_data(ad, data, sizeof(data)));
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
archive_entry_free(ae);
/*
* Repeat tar approach test, but use unset to mark the
* hardlink as having no data.
*/
/* Regular file. */
assert((ae = archive_entry_new()) != NULL);
archive_entry_copy_pathname(ae, "link2a");
archive_entry_set_mode(ae, S_IFREG | 0755);
archive_entry_set_size(ae, sizeof(data));
assertEqualIntA(ad, 0, archive_write_header(ad, ae));
assertEqualInt(sizeof(data),
archive_write_data(ad, data, sizeof(data)));
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
archive_entry_free(ae);
/* Link. Unset size means this doesn't carry data. */
assert((ae = archive_entry_new()) != NULL);
archive_entry_copy_pathname(ae, "link2b");
archive_entry_set_mode(ae, S_IFREG | 0642);
archive_entry_unset_size(ae);
archive_entry_copy_hardlink(ae, "link2a");
assertEqualIntA(ad, 0, archive_write_header(ad, ae));
assertEqualInt(ARCHIVE_WARN,
archive_write_data(ad, data, sizeof(data)));
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
archive_entry_free(ae);
/*
* Second, try an old-cpio-like approach; a regular file, then
* another identical one (which has been marked hardlink).
*/
/* Regular file. */
assert((ae = archive_entry_new()) != NULL);
archive_entry_copy_pathname(ae, "link3a");
archive_entry_set_mode(ae, S_IFREG | 0600);
archive_entry_set_size(ae, sizeof(data));
assertEqualIntA(ad, 0, archive_write_header(ad, ae));
assertEqualInt(sizeof(data), archive_write_data(ad, data, sizeof(data)));
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
archive_entry_free(ae);
/* Link. */
assert((ae = archive_entry_new()) != NULL);
archive_entry_copy_pathname(ae, "link3b");
archive_entry_set_mode(ae, S_IFREG | 0755);
archive_entry_set_size(ae, sizeof(data));
archive_entry_copy_hardlink(ae, "link3a");
assertEqualIntA(ad, 0, archive_write_header(ad, ae));
assertEqualInt(sizeof(data), archive_write_data(ad, data, sizeof(data)));
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
archive_entry_free(ae);
/*
* Finally, try a new-cpio-like approach, where the initial
* regular file is empty and the hardlink has the data.
*/
/* Regular file. */
assert((ae = archive_entry_new()) != NULL);
archive_entry_copy_pathname(ae, "link4a");
archive_entry_set_mode(ae, S_IFREG | 0600);
archive_entry_set_size(ae, 0);
assertEqualIntA(ad, 0, archive_write_header(ad, ae));
#if ARCHIVE_VERSION_NUMBER < 3000000
assertEqualInt(ARCHIVE_WARN, archive_write_data(ad, data, 1));
#else
assertEqualInt(-1, archive_write_data(ad, data, 1));
#endif
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
archive_entry_free(ae);
/* Link. */
assert((ae = archive_entry_new()) != NULL);
archive_entry_copy_pathname(ae, "link4b");
archive_entry_set_mode(ae, S_IFREG | 0755);
archive_entry_set_size(ae, sizeof(data));
archive_entry_copy_hardlink(ae, "link4a");
assertEqualIntA(ad, 0, archive_write_header(ad, ae));
assertEqualInt(sizeof(data), archive_write_data(ad, data, sizeof(data)));
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
archive_entry_free(ae);
#if ARCHIVE_VERSION_NUMBER < 2000000
archive_write_finish(ad);
#else
assertEqualInt(0, archive_write_finish(ad));
#endif
/* Test the entries on disk. */
/* Test #1 */
assert(0 == stat("link1a", &st));
/* If the hardlink was successfully created and the archive
* doesn't carry data for it, we consider it to be
* non-authoritive for meta data as well. This is consistent
* with GNU tar and BSD pax. */
assertEqualInt(st.st_mode & E_MASK, (S_IFREG | 0755) & ~UMASK);
assertEqualInt(st.st_size, sizeof(data));
assertEqualInt(st.st_nlink, 2);
assert(0 == stat("link1b", &st2));
assertEqualInt(st.st_mode, st2.st_mode);
assertEqualInt(st.st_size, st2.st_size);
assertEqualInt(st.st_nlink, st2.st_nlink);
assertEqualInt(st.st_ino, st2.st_ino);
assertEqualInt(st.st_dev, st2.st_dev);
/* Test #2: Should produce identical results to test #1 */
/* Note that marking a hardlink with size = 0 is treated the
* same as having an unset size. This is partly for backwards
* compatibility (we used to not have unset tracking, so
* relied on size == 0) and partly to match the model used by
* common file formats that store a size of zero for
* hardlinks. */
assert(0 == stat("link2a", &st));
assertEqualInt(st.st_mode & E_MASK, (S_IFREG | 0755) & ~UMASK);
assertEqualInt(st.st_size, sizeof(data));
assertEqualInt(st.st_nlink, 2);
assert(0 == stat("link2b", &st2));
assertEqualInt(st.st_mode, st2.st_mode);
assertEqualInt(st.st_size, st2.st_size);
assertEqualInt(st.st_nlink, st2.st_nlink);
assertEqualInt(st.st_ino, st2.st_ino);
assertEqualInt(st.st_dev, st2.st_dev);
/* Test #3 */
assert(0 == stat("link3a", &st));
assertEqualInt(st.st_mode & E_MASK, (S_IFREG | 0755) & ~UMASK);
assertEqualInt(st.st_size, sizeof(data));
assertEqualInt(st.st_nlink, 2);
assert(0 == stat("link3b", &st2));
assertEqualInt(st2.st_mode & E_MASK, (S_IFREG | 0755) & ~UMASK);
assertEqualInt(st2.st_size, sizeof(data));
assertEqualInt(st2.st_nlink, 2);
assertEqualInt(st.st_ino, st2.st_ino);
assertEqualInt(st.st_dev, st2.st_dev);
/* Test #4 */
assert(0 == stat("link4a", &st));
assertEqualInt(st.st_mode & E_MASK, (S_IFREG | 0755) & ~UMASK);
assertEqualInt(st.st_size, sizeof(data));
assertEqualInt(st.st_nlink, 2);
assert(0 == stat("link4b", &st2));
assertEqualInt(st2.st_mode & E_MASK, (S_IFREG | 0755) & ~UMASK);
assertEqualInt(st2.st_size, sizeof(data));
assertEqualInt(st2.st_nlink, 2);
assertEqualInt(st.st_ino, st2.st_ino);
assertEqualInt(st.st_dev, st2.st_dev);
#endif
}
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