/*- * 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 authoritive entry * has the correct permission and the non-authoritive 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; 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); /* * 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, 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); assertEqualInt(0, archive_write_finish(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-authoritive 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"); #endif }