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* Copyright (c) 2003-2007 Tim Kientzle
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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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* 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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* 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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__FBSDID("$FreeBSD: head/lib/libarchive/test/test_write_disk_sparse.c 201247 2009-12-30 05:59:21Z kientzle $");
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* Write a file using archive_write_data call, read the file
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* back and verify the contents. The data written includes large
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* blocks of nulls, so it should exercise the sparsification logic
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* if ARCHIVE_EXTRACT_SPARSE is enabled.
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verify_write_data(struct archive *a, int sparse)
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static const char data[]="abcdefghijklmnopqrstuvwxyz";
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struct archive_entry *ae;
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size_t buff_size = 64 * 1024;
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const char *msg = sparse ? "sparse" : "non-sparse";
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buff = malloc(buff_size);
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ae = archive_entry_new();
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archive_entry_set_size(ae, 8 * buff_size);
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archive_entry_set_pathname(ae, "test_write_data");
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archive_entry_set_mode(ae, AE_IFREG | 0755);
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assertEqualIntA(a, 0, archive_write_header(a, ae));
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/* Use archive_write_data() to write three relatively sparse blocks. */
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/* First has non-null data at beginning. */
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memset(buff, 0, buff_size);
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memcpy(buff, data, sizeof(data));
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assertEqualInt(buff_size, archive_write_data(a, buff, buff_size));
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/* Second has non-null data in the middle. */
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memset(buff, 0, buff_size);
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memcpy(buff + buff_size / 2 - 3, data, sizeof(data));
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assertEqualInt(buff_size, archive_write_data(a, buff, buff_size));
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/* Third has non-null data at the end. */
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memset(buff, 0, buff_size);
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memcpy(buff + buff_size - sizeof(data), data, sizeof(data));
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assertEqualInt(buff_size, archive_write_data(a, buff, buff_size));
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assertEqualIntA(a, 0, archive_write_finish_entry(a));
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/* Test the entry on disk. */
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assert(0 == stat(archive_entry_pathname(ae), &st));
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assertEqualInt(st.st_size, 8 * buff_size);
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f = fopen(archive_entry_pathname(ae), "rb");
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if (!assert(f != NULL))
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/* Check first block. */
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assertEqualInt(buff_size, fread(buff, 1, buff_size, f));
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assertEqualMem(buff, data, sizeof(data));
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for (p = buff + sizeof(data); p < buff + buff_size; ++p) {
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failure("offset: %d, %s", (int)(p - buff), msg);
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if (!assertEqualInt(0, *p))
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/* Check second block. */
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assertEqualInt(buff_size, fread(buff, 1, buff_size, f));
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for (p = buff; p < buff + buff_size; ++p) {
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failure("offset: %d, %s", (int)(p - buff), msg);
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if (p == buff + buff_size / 2 - 3) {
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assertEqualMem(p, data, sizeof(data));
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} else if (!assertEqualInt(0, *p))
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/* Check third block. */
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assertEqualInt(buff_size, fread(buff, 1, buff_size, f));
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for (p = buff; p < buff + buff_size - sizeof(data); ++p) {
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failure("offset: %d, %s", (int)(p - buff), msg);
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if (!assertEqualInt(0, *p))
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assertEqualMem(buff + buff_size - sizeof(data), data, sizeof(data));
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assertEqualInt(0, fclose(f));
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archive_entry_free(ae);
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* As above, but using the archive_write_data_block() call.
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verify_write_data_block(struct archive *a, int sparse)
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static const char data[]="abcdefghijklmnopqrstuvwxyz";
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struct archive_entry *ae;
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size_t buff_size = 64 * 1024;
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const char *msg = sparse ? "sparse" : "non-sparse";
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buff = malloc(buff_size);
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assert(buff != NULL);
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ae = archive_entry_new();
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archive_entry_set_size(ae, 8 * buff_size);
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archive_entry_set_pathname(ae, "test_write_data_block");
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archive_entry_set_mode(ae, AE_IFREG | 0755);
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assertEqualIntA(a, 0, archive_write_header(a, ae));
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/* Use archive_write_data_block() to write three
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relatively sparse blocks. */
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/* First has non-null data at beginning. */
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memset(buff, 0, buff_size);
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memcpy(buff, data, sizeof(data));
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assertEqualInt(ARCHIVE_OK,
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archive_write_data_block(a, buff, buff_size, 100));
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/* Second has non-null data in the middle. */
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memset(buff, 0, buff_size);
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memcpy(buff + buff_size / 2 - 3, data, sizeof(data));
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assertEqualInt(ARCHIVE_OK,
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archive_write_data_block(a, buff, buff_size, buff_size + 200));
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/* Third has non-null data at the end. */
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memset(buff, 0, buff_size);
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memcpy(buff + buff_size - sizeof(data), data, sizeof(data));
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assertEqualInt(ARCHIVE_OK,
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archive_write_data_block(a, buff, buff_size, buff_size * 2 + 300));
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assertEqualIntA(a, 0, archive_write_finish_entry(a));
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/* Test the entry on disk. */
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assert(0 == stat(archive_entry_pathname(ae), &st));
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assertEqualInt(st.st_size, 8 * buff_size);
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f = fopen(archive_entry_pathname(ae), "rb");
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if (!assert(f != NULL))
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/* Check 100-byte gap at beginning */
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assertEqualInt(100, fread(buff, 1, 100, f));
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for (p = buff; p < buff + 100; ++p) {
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failure("offset: %d, %s", (int)(p - buff), msg);
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if (!assertEqualInt(0, *p))
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/* Check first block. */
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assertEqualInt(buff_size, fread(buff, 1, buff_size, f));
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assertEqualMem(buff, data, sizeof(data));
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for (p = buff + sizeof(data); p < buff + buff_size; ++p) {
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failure("offset: %d, %s", (int)(p - buff), msg);
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if (!assertEqualInt(0, *p))
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/* Check 100-byte gap */
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assertEqualInt(100, fread(buff, 1, 100, f));
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for (p = buff; p < buff + 100; ++p) {
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failure("offset: %d, %s", (int)(p - buff), msg);
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if (!assertEqualInt(0, *p))
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/* Check second block. */
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assertEqualInt(buff_size, fread(buff, 1, buff_size, f));
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for (p = buff; p < buff + buff_size; ++p) {
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failure("offset: %d, %s", (int)(p - buff), msg);
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if (p == buff + buff_size / 2 - 3) {
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assertEqualMem(p, data, sizeof(data));
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} else if (!assertEqualInt(0, *p))
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/* Check 100-byte gap */
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assertEqualInt(100, fread(buff, 1, 100, f));
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for (p = buff; p < buff + 100; ++p) {
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failure("offset: %d, %s", (int)(p - buff), msg);
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if (!assertEqualInt(0, *p))
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/* Check third block. */
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assertEqualInt(buff_size, fread(buff, 1, buff_size, f));
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for (p = buff; p < buff + buff_size - sizeof(data); ++p) {
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failure("offset: %d, %s", (int)(p - buff), msg);
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if (!assertEqualInt(0, *p))
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assertEqualMem(buff + buff_size - sizeof(data), data, sizeof(data));
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/* Check another block size beyond last we wrote. */
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assertEqualInt(buff_size, fread(buff, 1, buff_size, f));
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for (p = buff; p < buff + buff_size; ++p) {
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failure("offset: %d, %s", (int)(p - buff), msg);
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if (!assertEqualInt(0, *p))
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assertEqualInt(0, fclose(f));
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archive_entry_free(ae);
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DEFINE_TEST(test_write_disk_sparse)
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* The return values, etc, of the write data functions
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* shouldn't change regardless of whether we've requested
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* sparsification. (The performance and pattern of actual
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* write calls to the disk should vary, of course, but the
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* client program shouldn't see any difference.)
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assert((ad = archive_write_disk_new()) != NULL);
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archive_write_disk_set_options(ad, 0);
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verify_write_data(ad, 0);
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verify_write_data_block(ad, 0);
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assertEqualInt(0, archive_write_finish(ad));
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assert((ad = archive_write_disk_new()) != NULL);
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archive_write_disk_set_options(ad, ARCHIVE_EXTRACT_SPARSE);
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verify_write_data(ad, 1);
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verify_write_data_block(ad, 1);
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assertEqualInt(0, archive_write_finish(ad));
added
removed
src/libarchive/libarchive/test/test_write_disk_sparse.c
