-/***
- This file is part of systemd
+/* SPDX-License-Identifier: LGPL-2.1+ */
- Copyright 2014 Ronny Chevalier
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#ifdef HAVE_LZ4
+#if HAVE_LZ4
#include <lz4.h>
#endif
#include "alloc-util.h"
#include "compress.h"
#include "fd-util.h"
-#include "fileio.h"
+#include "fs-util.h"
#include "macro.h"
+#include "path-util.h"
#include "random-util.h"
+#include "tests.h"
+#include "tmpfile-util.h"
#include "util.h"
-#ifdef HAVE_XZ
+#if HAVE_XZ
# define XZ_OK 0
#else
# define XZ_OK -EPROTONOSUPPORT
#endif
-#ifdef HAVE_LZ4
+#if HAVE_LZ4
# define LZ4_OK 0
#else
# define LZ4_OK -EPROTONOSUPPORT
typedef int (compress_stream_t)(int fdf, int fdt, uint64_t max_bytes);
typedef int (decompress_stream_t)(int fdf, int fdt, uint64_t max_size);
+#if HAVE_XZ || HAVE_LZ4
static void test_compress_decompress(int compression,
compress_blob_t compress,
decompress_blob_t decompress,
size_t csize, usize = 0, len;
int r;
- log_info("/* testing decompress_startswith with %s on %.20s text*/",
+ log_info("/* testing decompress_startswith with %s on %.20s text */",
object_compressed_to_string(compression), data);
#define BUFSIZE_1 512
assert_se(r > 0);
}
+static void test_decompress_startswith_short(int compression,
+ compress_blob_t compress,
+ decompress_sw_t decompress_sw) {
+
+#define TEXT "HUGE=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
+
+ char buf[1024];
+ size_t i, csize;
+ int r;
+
+ log_info("/* %s with %s */", __func__, object_compressed_to_string(compression));
+
+ r = compress(TEXT, sizeof TEXT, buf, sizeof buf, &csize);
+ assert_se(r == 0);
+
+ for (i = 1; i < strlen(TEXT); i++) {
+ size_t alloc_size = i;
+ _cleanup_free_ void *buf2 = NULL;
+
+ assert_se(buf2 = malloc(i));
+
+ assert_se(decompress_sw(buf, csize, &buf2, &alloc_size, TEXT, i, TEXT[i]) == 1);
+ assert_se(decompress_sw(buf, csize, &buf2, &alloc_size, TEXT, i, 'y') == 0);
+ }
+}
+
static void test_compress_stream(int compression,
const char* cat,
compress_stream_t compress,
const char *srcfile) {
_cleanup_close_ int src = -1, dst = -1, dst2 = -1;
- char pattern[] = "/tmp/systemd-test.compressed.XXXXXX",
- pattern2[] = "/tmp/systemd-test.compressed.XXXXXX";
+ _cleanup_(unlink_tempfilep) char
+ pattern[] = "/tmp/systemd-test.compressed.XXXXXX",
+ pattern2[] = "/tmp/systemd-test.compressed.XXXXXX";
int r;
- _cleanup_free_ char *cmd = NULL, *cmd2;
+ _cleanup_free_ char *cmd = NULL, *cmd2 = NULL;
struct stat st = {};
+ r = find_binary(cat, NULL);
+ if (r < 0) {
+ log_error_errno(r, "Skipping %s, could not find %s binary: %m", __func__, cat);
+ return;
+ }
+
log_debug("/* testing %s compression */",
object_compressed_to_string(compression));
assert_se(lseek(dst, 1, SEEK_SET) == 1);
r = decompress(dst, dst2, st.st_size);
- assert_se(r == -EBADMSG || r == 0);
+ assert_se(IN_SET(r, 0, -EBADMSG));
assert_se(lseek(dst, 0, SEEK_SET) == 0);
assert_se(lseek(dst2, 0, SEEK_SET) == 0);
r = decompress(dst, dst2, st.st_size - 1);
assert_se(r == -EFBIG);
-
- assert_se(unlink(pattern) == 0);
- assert_se(unlink(pattern2) == 0);
}
+#endif
-#ifdef HAVE_LZ4
+#if HAVE_LZ4
static void test_lz4_decompress_partial(void) {
- char buf[20000];
+ char buf[20000], buf2[100];
size_t buf_size = sizeof(buf), compressed;
int r;
_cleanup_free_ char *huge = NULL;
#define HUGE_SIZE (4096*1024)
- huge = malloc(HUGE_SIZE);
+ assert_se(huge = malloc(HUGE_SIZE));
memset(huge, 'x', HUGE_SIZE);
memcpy(huge, "HUGE=", 5);
- r = LZ4_compress_limitedOutput(huge, buf, HUGE_SIZE, buf_size);
+ r = LZ4_compress_default(huge, buf, HUGE_SIZE, buf_size);
assert_se(r >= 0);
compressed = r;
log_info("Compressed %i → %zu", HUGE_SIZE, compressed);
assert_se(r >= 0);
log_info("Decompressed partial %i/%i → %i", 12, HUGE_SIZE, r);
- /* We expect this to fail, because that's how current lz4 works. If this
- * call succeeds, then lz4 has been fixed, and we need to change our code.
- */
- r = LZ4_decompress_safe_partial(buf, huge,
- compressed,
- 12, HUGE_SIZE-1);
- assert_se(r < 0);
- log_info("Decompressed partial %i/%i → %i", 12, HUGE_SIZE-1, r);
+ for (size_t size = 1; size < sizeof(buf2); size++) {
+ /* This failed in older lz4s but works in newer ones. */
+ r = LZ4_decompress_safe_partial(buf, buf2, compressed, size, size);
+ log_info("Decompressed partial %zu/%zu → %i (%s)", size, size, r,
+ r < 0 ? "bad" : "good");
+ if (r >= 0 && LZ4_versionNumber() >= 10803)
+ /* lz4 <= 1.8.2 should fail that test, let's only check for newer ones */
+ assert_se(memcmp(buf2, huge, r) == 0);
+ }
}
#endif
int main(int argc, char *argv[]) {
+#if HAVE_XZ || HAVE_LZ4
const char text[] =
"text\0foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF"
"foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF";
+ /* The file to test compression on can be specified as the first argument */
+ const char *srcfile = argc > 1 ? argv[1] : argv[0];
+
char data[512] = "random\0";
char huge[4096*1024];
memcpy(huge, "HUGE=", 5);
char_array_0(huge);
- log_set_max_level(LOG_DEBUG);
+ test_setup_logging(LOG_DEBUG);
random_bytes(data + 7, sizeof(data) - 7);
-#ifdef HAVE_XZ
+#if HAVE_XZ
test_compress_decompress(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_blob_xz,
text, sizeof(text), false);
test_compress_decompress(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_blob_xz,
huge, sizeof(huge), true);
test_compress_stream(OBJECT_COMPRESSED_XZ, "xzcat",
- compress_stream_xz, decompress_stream_xz, argv[0]);
+ compress_stream_xz, decompress_stream_xz, srcfile);
+
+ test_decompress_startswith_short(OBJECT_COMPRESSED_XZ, compress_blob_xz, decompress_startswith_xz);
+
#else
log_info("/* XZ test skipped */");
#endif
-#ifdef HAVE_LZ4
+#if HAVE_LZ4
test_compress_decompress(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_blob_lz4,
text, sizeof(text), false);
test_compress_decompress(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_blob_lz4,
huge, sizeof(huge), true);
test_compress_stream(OBJECT_COMPRESSED_LZ4, "lz4cat",
- compress_stream_lz4, decompress_stream_lz4, argv[0]);
+ compress_stream_lz4, decompress_stream_lz4, srcfile);
test_lz4_decompress_partial();
+
+ test_decompress_startswith_short(OBJECT_COMPRESSED_LZ4, compress_blob_lz4, decompress_startswith_lz4);
+
#else
log_info("/* LZ4 test skipped */");
#endif
return 0;
+#else
+ log_info("/* XZ and LZ4 tests skipped */");
+ return EXIT_TEST_SKIP;
+#endif
}
projects / thirdparty / systemd.git / blobdiff