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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: head/lib/libarchive/test/test_write_disk_hardlink.c 201247 2009-12-30 05:59:21Z kientzle $");
#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 authoritative entry
* has the correct permission and the non-authoritative versions
* are just writeable files.
*/
DEFINE_TEST(test_write_disk_hardlink)
{
#if defined(__HAIKU__)
skipping("archive_write_disk_hardlink; hardlinks are not supported on bfs");
#else
static const char data[]="abcdefghijklmnopqrstuvwxyz";
struct archive *ad;
struct archive_entry *ae;
#ifdef HAVE_LINKAT
int can_symlink;
#endif
int r;
/* Force the umask to something predictable. */
assertUmask(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, r = archive_write_header(ad, ae));
if (r >= ARCHIVE_WARN) {
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, r = archive_write_header(ad, ae));
if (r >= ARCHIVE_WARN) {
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, r = archive_write_header(ad, ae));
if (r > ARCHIVE_WARN) {
assertEqualInt(sizeof(data),
archive_write_data(ad, data, sizeof(data)));
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
}
archive_entry_free(ae);
/*
* Third, 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));
assertEqualInt(ARCHIVE_WARN, archive_write_data(ad, data, 1));
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, r = archive_write_header(ad, ae));
if (r > ARCHIVE_FAILED) {
assertEqualInt(sizeof(data),
archive_write_data(ad, data, sizeof(data)));
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
}
archive_entry_free(ae);
#ifdef HAVE_LINKAT
/* Finally, try creating a hard link to a dangling symlink */
can_symlink = canSymlink();
if (can_symlink) {
/* Symbolic link: link5a -> foo */
assert((ae = archive_entry_new()) != NULL);
archive_entry_copy_pathname(ae, "link5a");
archive_entry_set_mode(ae, AE_IFLNK | 0642);
archive_entry_unset_size(ae);
archive_entry_copy_symlink(ae, "foo");
assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
if (r >= ARCHIVE_WARN) {
assertEqualInt(ARCHIVE_WARN,
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, "link5b");
archive_entry_set_mode(ae, S_IFREG | 0642);
archive_entry_set_size(ae, 0);
archive_entry_copy_hardlink(ae, "link5a");
assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
if (r >= ARCHIVE_WARN) {
assertEqualInt(ARCHIVE_WARN,
archive_write_data(ad, data, sizeof(data)));
assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
}
archive_entry_free(ae);
}
#endif
assertEqualInt(0, archive_write_free(ad));
/* Test the entries on disk. */
/* Test #1 */
/* If the hardlink was successfully created and the archive
* doesn't carry data for it, we consider it to be
* non-authoritative for meta data as well. This is consistent
* with GNU tar and BSD pax. */
assertIsReg("link1a", 0755 & ~UMASK);
assertFileSize("link1a", sizeof(data));
assertFileNLinks("link1a", 2);
assertIsHardlink("link1a", "link1b");
/* 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. */
assertIsReg("link2a", 0755 & ~UMASK);
assertFileSize("link2a", sizeof(data));
assertFileNLinks("link2a", 2);
assertIsHardlink("link2a", "link2b");
/* Test #3 */
assertIsReg("link3a", 0755 & ~UMASK);
assertFileSize("link3a", sizeof(data));
assertFileNLinks("link3a", 2);
assertIsHardlink("link3a", "link3b");
/* Test #4 */
assertIsReg("link4a", 0755 & ~UMASK);
assertFileNLinks("link4a", 2);
assertFileSize("link4a", sizeof(data));
assertIsHardlink("link4a", "link4b");
#ifdef HAVE_LINKAT
if (can_symlink) {
/* Test #5 */
assertIsSymlink("link5a", "foo", 0);
assertFileNLinks("link5a", 2);
assertIsHardlink("link5a", "link5b");
}
#endif
#endif
}
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