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a0bfb8ae3e
unspecified size are "unlimited" (required by Zip reader, which sometimes does not know the uncompressed size of an entry until it gets to the end). Also, hardlinks with unspecified (or zero) size do not overwrite the data on disk nor do they set metadata. This is compatible with GNU tar and NetBSD pax behavior.
235 lines
8.3 KiB
C
235 lines
8.3 KiB
C
/*-
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* Copyright (c) 2003-2007 Tim Kientzle
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "test.h"
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__FBSDID("$FreeBSD$");
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#define UMASK 022
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/*
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* Exercise hardlink recreation.
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*
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* File permissions are chosen so that the authoritive entry
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* has the correct permission and the non-authoritive versions
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* are just writeable files.
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*/
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DEFINE_TEST(test_write_disk_hardlink)
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{
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#if ARCHIVE_VERSION_NUMBER < 1009000
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skipping("archive_write_disk_hardlink tests");
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#else
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static const char data[]="abcdefghijklmnopqrstuvwxyz";
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struct archive *ad;
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struct archive_entry *ae;
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struct stat st, st2;
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/* Force the umask to something predictable. */
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umask(UMASK);
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/* Write entries to disk. */
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assert((ad = archive_write_disk_new()) != NULL);
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/*
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* First, use a tar-like approach; a regular file, then
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* a separate "hardlink" entry.
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*/
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/* Regular file. */
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assert((ae = archive_entry_new()) != NULL);
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archive_entry_copy_pathname(ae, "link1a");
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archive_entry_set_mode(ae, S_IFREG | 0755);
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archive_entry_set_size(ae, sizeof(data));
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assertEqualIntA(ad, 0, archive_write_header(ad, ae));
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assertEqualInt(sizeof(data),
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archive_write_data(ad, data, sizeof(data)));
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assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
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archive_entry_free(ae);
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/* Link. Size of zero means this doesn't carry data. */
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assert((ae = archive_entry_new()) != NULL);
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archive_entry_copy_pathname(ae, "link1b");
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archive_entry_set_mode(ae, S_IFREG | 0642);
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archive_entry_set_size(ae, 0);
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archive_entry_copy_hardlink(ae, "link1a");
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assertEqualIntA(ad, 0, archive_write_header(ad, ae));
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assertEqualInt(ARCHIVE_WARN,
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archive_write_data(ad, data, sizeof(data)));
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assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
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archive_entry_free(ae);
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/*
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* Repeat tar approach test, but use unset to mark the
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* hardlink as having no data.
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*/
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/* Regular file. */
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assert((ae = archive_entry_new()) != NULL);
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archive_entry_copy_pathname(ae, "link2a");
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archive_entry_set_mode(ae, S_IFREG | 0755);
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archive_entry_set_size(ae, sizeof(data));
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assertEqualIntA(ad, 0, archive_write_header(ad, ae));
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assertEqualInt(sizeof(data),
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archive_write_data(ad, data, sizeof(data)));
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assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
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archive_entry_free(ae);
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/* Link. Unset size means this doesn't carry data. */
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assert((ae = archive_entry_new()) != NULL);
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archive_entry_copy_pathname(ae, "link2b");
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archive_entry_set_mode(ae, S_IFREG | 0642);
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archive_entry_unset_size(ae);
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archive_entry_copy_hardlink(ae, "link2a");
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assertEqualIntA(ad, 0, archive_write_header(ad, ae));
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assertEqualInt(ARCHIVE_WARN,
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archive_write_data(ad, data, sizeof(data)));
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assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
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archive_entry_free(ae);
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/*
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* Second, try an old-cpio-like approach; a regular file, then
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* another identical one (which has been marked hardlink).
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*/
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/* Regular file. */
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assert((ae = archive_entry_new()) != NULL);
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archive_entry_copy_pathname(ae, "link3a");
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archive_entry_set_mode(ae, S_IFREG | 0600);
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archive_entry_set_size(ae, sizeof(data));
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assertEqualIntA(ad, 0, archive_write_header(ad, ae));
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assertEqualInt(sizeof(data), archive_write_data(ad, data, sizeof(data)));
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assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
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archive_entry_free(ae);
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/* Link. */
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assert((ae = archive_entry_new()) != NULL);
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archive_entry_copy_pathname(ae, "link3b");
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archive_entry_set_mode(ae, S_IFREG | 0755);
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archive_entry_set_size(ae, sizeof(data));
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archive_entry_copy_hardlink(ae, "link3a");
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assertEqualIntA(ad, 0, archive_write_header(ad, ae));
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assertEqualInt(sizeof(data), archive_write_data(ad, data, sizeof(data)));
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assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
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archive_entry_free(ae);
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/*
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* Finally, try a new-cpio-like approach, where the initial
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* regular file is empty and the hardlink has the data.
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*/
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/* Regular file. */
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assert((ae = archive_entry_new()) != NULL);
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archive_entry_copy_pathname(ae, "link4a");
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archive_entry_set_mode(ae, S_IFREG | 0600);
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archive_entry_set_size(ae, 0);
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assertEqualIntA(ad, 0, archive_write_header(ad, ae));
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#if ARCHIVE_VERSION_NUMBER < 3000000
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assertEqualInt(ARCHIVE_WARN, archive_write_data(ad, data, 1));
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#else
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assertEqualInt(-1, archive_write_data(ad, data, 1));
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#endif
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assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
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archive_entry_free(ae);
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/* Link. */
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assert((ae = archive_entry_new()) != NULL);
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archive_entry_copy_pathname(ae, "link4b");
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archive_entry_set_mode(ae, S_IFREG | 0755);
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archive_entry_set_size(ae, sizeof(data));
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archive_entry_copy_hardlink(ae, "link4a");
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assertEqualIntA(ad, 0, archive_write_header(ad, ae));
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assertEqualInt(sizeof(data), archive_write_data(ad, data, sizeof(data)));
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assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
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archive_entry_free(ae);
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#if ARCHIVE_VERSION_NUMBER < 2000000
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archive_write_finish(ad);
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#else
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assertEqualInt(0, archive_write_finish(ad));
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#endif
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/* Test the entries on disk. */
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/* Test #1 */
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assert(0 == stat("link1a", &st));
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/* If the hardlink was successfully created and the archive
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* doesn't carry data for it, we consider it to be
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* non-authoritive for meta data as well. This is consistent
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* with GNU tar and BSD pax. */
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assertEqualInt(st.st_mode, (S_IFREG | 0755) & ~UMASK);
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assertEqualInt(st.st_size, sizeof(data));
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assertEqualInt(st.st_nlink, 2);
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assert(0 == stat("link1b", &st2));
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assertEqualInt(st.st_mode, st2.st_mode);
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assertEqualInt(st.st_size, st2.st_size);
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assertEqualInt(st.st_nlink, st2.st_nlink);
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assertEqualInt(st.st_ino, st2.st_ino);
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assertEqualInt(st.st_dev, st2.st_dev);
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/* Test #2: Should produce identical results to test #1 */
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/* Note that marking a hardlink with size = 0 is treated the
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* same as having an unset size. This is partly for backwards
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* compatibility (we used to not have unset tracking, so
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* relied on size == 0) and partly to match the model used by
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* common file formats that store a size of zero for
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* hardlinks. */
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assert(0 == stat("link2a", &st));
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assertEqualInt(st.st_mode, (S_IFREG | 0755) & ~UMASK);
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assertEqualInt(st.st_size, sizeof(data));
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assertEqualInt(st.st_nlink, 2);
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assert(0 == stat("link2b", &st2));
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assertEqualInt(st.st_mode, st2.st_mode);
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assertEqualInt(st.st_size, st2.st_size);
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assertEqualInt(st.st_nlink, st2.st_nlink);
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assertEqualInt(st.st_ino, st2.st_ino);
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assertEqualInt(st.st_dev, st2.st_dev);
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/* Test #3 */
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assert(0 == stat("link3a", &st));
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assertEqualInt(st.st_mode, (S_IFREG | 0755) & ~UMASK);
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assertEqualInt(st.st_size, sizeof(data));
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assertEqualInt(st.st_nlink, 2);
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assert(0 == stat("link3b", &st2));
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assertEqualInt(st2.st_mode, (S_IFREG | 0755) & ~UMASK);
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assertEqualInt(st2.st_size, sizeof(data));
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assertEqualInt(st2.st_nlink, 2);
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assertEqualInt(st.st_ino, st2.st_ino);
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assertEqualInt(st.st_dev, st2.st_dev);
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/* Test #4 */
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assert(0 == stat("link4a", &st));
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assertEqualInt(st.st_mode, (S_IFREG | 0755) & ~UMASK);
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assertEqualInt(st.st_size, sizeof(data));
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assertEqualInt(st.st_nlink, 2);
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assert(0 == stat("link4b", &st2));
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assertEqualInt(st2.st_mode, (S_IFREG | 0755) & ~UMASK);
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assertEqualInt(st2.st_size, sizeof(data));
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assertEqualInt(st2.st_nlink, 2);
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assertEqualInt(st.st_ino, st2.st_ino);
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assertEqualInt(st.st_dev, st2.st_dev);
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#endif
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}
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