2 This file is part of systemd
4 Copyright 2014 Ronny Chevalier
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
27 # define XZ_OK -EPROTONOSUPPORT
33 # define LZ4_OK -EPROTONOSUPPORT
36 typedef int (compress_blob_t
)(const void *src
, uint64_t src_size
,
37 void *dst
, size_t *dst_size
);
38 typedef int (decompress_blob_t
)(const void *src
, uint64_t src_size
,
39 void **dst
, size_t *dst_alloc_size
,
40 size_t* dst_size
, size_t dst_max
);
41 typedef int (decompress_sw_t
)(const void *src
, uint64_t src_size
,
42 void **buffer
, size_t *buffer_size
,
43 const void *prefix
, size_t prefix_len
,
46 typedef int (compress_stream_t
)(int fdf
, int fdt
, off_t max_bytes
);
47 typedef int (decompress_stream_t
)(int fdf
, int fdt
, off_t max_size
);
49 static void test_compress_decompress(int compression
,
50 compress_blob_t compress
,
51 decompress_blob_t decompress
,
58 _cleanup_free_
char *decompressed
= NULL
;
61 log_info("/* testing %s %s blob compression/decompression */",
62 object_compressed_to_string(compression
), data
);
64 r
= compress(data
, data_len
, compressed
, &csize
);
66 log_info_errno(r
, "compression failed: %m");
70 r
= decompress(compressed
, csize
,
71 (void **) &decompressed
, &usize
, &csize
, 0);
73 assert_se(decompressed
);
74 assert_se(memcmp(decompressed
, data
, data_len
) == 0);
77 r
= decompress("garbage", 7,
78 (void **) &decompressed
, &usize
, &csize
, 0);
81 /* make sure to have the minimal lz4 compressed size */
82 r
= decompress("00000000\1g", 9,
83 (void **) &decompressed
, &usize
, &csize
, 0);
86 r
= decompress("\100000000g", 9,
87 (void **) &decompressed
, &usize
, &csize
, 0);
90 memzero(decompressed
, usize
);
93 static void test_decompress_startswith(int compression
,
94 compress_blob_t compress
,
95 decompress_sw_t decompress_sw
,
100 char compressed
[512];
103 _cleanup_free_
char *decompressed
= NULL
;
106 log_info("/* testing decompress_startswith with %s on %s text*/",
107 object_compressed_to_string(compression
), data
);
109 r
= compress(data
, data_len
, compressed
, &csize
);
111 log_info_errno(r
, "compression failed: %m");
117 assert_se(decompress_sw(compressed
,
119 (void **) &decompressed
,
121 data
, strlen(data
), '\0') > 0);
122 assert_se(decompress_sw(compressed
,
124 (void **) &decompressed
,
126 data
, strlen(data
), 'w') == 0);
127 assert_se(decompress_sw(compressed
,
129 (void **) &decompressed
,
131 "barbarbar", 9, ' ') == 0);
132 assert_se(decompress_sw(compressed
,
134 (void **) &decompressed
,
136 data
, strlen(data
), '\0') > 0);
139 static void test_compress_stream(int compression
,
141 compress_stream_t compress
,
142 decompress_stream_t decompress
,
143 const char *srcfile
) {
145 _cleanup_close_
int src
= -1, dst
= -1, dst2
= -1;
146 char pattern
[] = "/tmp/systemd-test.xz.XXXXXX",
147 pattern2
[] = "/tmp/systemd-test.xz.XXXXXX";
149 _cleanup_free_
char *cmd
= NULL
, *cmd2
;
152 log_debug("/* testing %s compression */",
153 object_compressed_to_string(compression
));
155 log_debug("/* create source from %s */", srcfile
);
157 assert_se((src
= open(srcfile
, O_RDONLY
|O_CLOEXEC
)) >= 0);
159 log_debug("/* test compression */");
161 assert_se((dst
= mkostemp_safe(pattern
, O_RDWR
|O_CLOEXEC
)) >= 0);
163 assert_se(compress(src
, dst
, -1) == 0);
166 assert_se(asprintf(&cmd
, "%s %s | diff %s -", cat
, pattern
, srcfile
) > 0);
167 assert_se(system(cmd
) == 0);
170 log_debug("/* test decompression */");
172 assert_se((dst2
= mkostemp_safe(pattern2
, O_RDWR
|O_CLOEXEC
)) >= 0);
174 assert_se(stat(srcfile
, &st
) == 0);
176 assert_se(lseek(dst
, 0, SEEK_SET
) == 0);
177 r
= decompress(dst
, dst2
, st
.st_size
);
180 assert_se(asprintf(&cmd2
, "diff %s %s", srcfile
, pattern2
) > 0);
181 assert_se(system(cmd2
) == 0);
183 log_debug("/* test faulty decompression */");
185 assert_se(lseek(dst
, 1, SEEK_SET
) == 1);
186 r
= decompress(dst
, dst2
, st
.st_size
);
187 assert_se(r
== -EBADMSG
);
189 assert_se(lseek(dst
, 0, SEEK_SET
) == 0);
190 assert_se(lseek(dst2
, 0, SEEK_SET
) == 0);
191 r
= decompress(dst
, dst2
, st
.st_size
- 1);
192 assert_se(r
== -EFBIG
);
194 assert_se(unlink(pattern
) == 0);
195 assert_se(unlink(pattern2
) == 0);
198 int main(int argc
, char *argv
[]) {
200 "text\0foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF"
201 "foofoofoofoo AAAA aaaaaaaaa ghost busters barbarbar FFF";
203 char data
[512] = "random\0";
205 log_set_max_level(LOG_DEBUG
);
207 random_bytes(data
+ 7, sizeof(data
) - 7);
210 test_compress_decompress(OBJECT_COMPRESSED_XZ
, compress_blob_xz
, decompress_blob_xz
,
211 text
, sizeof(text
), false);
212 test_compress_decompress(OBJECT_COMPRESSED_XZ
, compress_blob_xz
, decompress_blob_xz
,
213 data
, sizeof(data
), true);
214 test_decompress_startswith(OBJECT_COMPRESSED_XZ
,
215 compress_blob_xz
, decompress_startswith_xz
,
216 text
, sizeof(text
), false);
217 test_decompress_startswith(OBJECT_COMPRESSED_XZ
,
218 compress_blob_xz
, decompress_startswith_xz
,
219 data
, sizeof(data
), true);
220 test_compress_stream(OBJECT_COMPRESSED_XZ
, "xzcat",
221 compress_stream_xz
, decompress_stream_xz
, argv
[0]);
223 log_info("/* XZ test skipped */");
227 test_compress_decompress(OBJECT_COMPRESSED_LZ4
, compress_blob_lz4
, decompress_blob_lz4
,
228 text
, sizeof(text
), false);
229 test_compress_decompress(OBJECT_COMPRESSED_LZ4
, compress_blob_lz4
, decompress_blob_lz4
,
230 data
, sizeof(data
), true);
231 test_decompress_startswith(OBJECT_COMPRESSED_LZ4
,
232 compress_blob_lz4
, decompress_startswith_lz4
,
233 text
, sizeof(text
), false);
234 test_decompress_startswith(OBJECT_COMPRESSED_LZ4
,
235 compress_blob_lz4
, decompress_startswith_lz4
,
236 data
, sizeof(data
), true);
238 /* Produced stream is not compatible with lz4 binary, skip lz4cat check. */
239 test_compress_stream(OBJECT_COMPRESSED_LZ4
, NULL
,
240 compress_stream_lz4
, decompress_stream_lz4
, argv
[0]);
242 log_info("/* LZ4 test skipped */");