diff options
Diffstat (limited to 'fs/jffs2/comprtest.c')
| -rw-r--r-- | fs/jffs2/comprtest.c | 307 |
1 files changed, 307 insertions, 0 deletions
diff --git a/fs/jffs2/comprtest.c b/fs/jffs2/comprtest.c new file mode 100644 index 000000000000..cf51f091d0e7 --- /dev/null +++ b/fs/jffs2/comprtest.c | |||
| @@ -0,0 +1,307 @@ | |||
| 1 | /* $Id: comprtest.c,v 1.5 2002/01/03 15:20:44 dwmw2 Exp $ */ | ||
| 2 | |||
| 3 | #include <linux/kernel.h> | ||
| 4 | #include <linux/string.h> | ||
| 5 | #include <linux/module.h> | ||
| 6 | #include <asm/types.h> | ||
| 7 | #if 0 | ||
| 8 | #define TESTDATA_LEN 512 | ||
| 9 | static unsigned char testdata[TESTDATA_LEN] = { | ||
| 10 | 0x7f, 0x45, 0x4c, 0x46, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
| 11 | 0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x60, 0x83, 0x04, 0x08, 0x34, 0x00, 0x00, 0x00, | ||
| 12 | 0xb0, 0x29, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x20, 0x00, 0x06, 0x00, 0x28, 0x00, | ||
| 13 | 0x1e, 0x00, 0x1b, 0x00, 0x06, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x34, 0x80, 0x04, 0x08, | ||
| 14 | 0x34, 0x80, 0x04, 0x08, 0xc0, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, | ||
| 15 | 0x04, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0xf4, 0x00, 0x00, 0x00, 0xf4, 0x80, 0x04, 0x08, | ||
| 16 | 0xf4, 0x80, 0x04, 0x08, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, | ||
| 17 | 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x04, 0x08, | ||
| 18 | 0x00, 0x80, 0x04, 0x08, 0x0d, 0x05, 0x00, 0x00, 0x0d, 0x05, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, | ||
| 19 | 0x00, 0x10, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x10, 0x05, 0x00, 0x00, 0x10, 0x95, 0x04, 0x08, | ||
| 20 | 0x10, 0x95, 0x04, 0x08, 0xe8, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, | ||
| 21 | 0x00, 0x10, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x58, 0x05, 0x00, 0x00, 0x58, 0x95, 0x04, 0x08, | ||
| 22 | 0x58, 0x95, 0x04, 0x08, 0xa0, 0x00, 0x00, 0x00, 0xa0, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, | ||
| 23 | 0x04, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x08, 0x81, 0x04, 0x08, | ||
| 24 | 0x08, 0x81, 0x04, 0x08, 0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, | ||
| 25 | 0x04, 0x00, 0x00, 0x00, 0x2f, 0x6c, 0x69, 0x62, 0x2f, 0x6c, 0x64, 0x2d, 0x6c, 0x69, 0x6e, 0x75, | ||
| 26 | 0x78, 0x2e, 0x73, 0x6f, 0x2e, 0x32, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, | ||
| 27 | 0x01, 0x00, 0x00, 0x00, 0x47, 0x4e, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, | ||
| 28 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, | ||
| 29 | 0x07, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
| 30 | 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
| 31 | 0x04, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, | ||
| 32 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x69, 0x00, 0x00, 0x00, | ||
| 33 | 0x0c, 0x83, 0x04, 0x08, 0x81, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, | ||
| 34 | 0x1c, 0x83, 0x04, 0x08, 0xac, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x57, 0x00, 0x00, 0x00, | ||
| 35 | 0x2c, 0x83, 0x04, 0x08, 0xdd, 0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x1a, 0x00, 0x00, 0x00, | ||
| 36 | 0x3c, 0x83, 0x04, 0x08, 0x2e, 0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x21, 0x00, 0x00, 0x00, | ||
| 37 | 0x4c, 0x83, 0x04, 0x08, 0x7d, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x48, 0x00, 0x00, 0x00, | ||
| 38 | 0x00, 0x85, 0x04, 0x08, 0x04, 0x00, 0x00, 0x00, 0x11, 0x00, 0x0e, 0x00, 0x01, 0x00, 0x00, 0x00, | ||
| 39 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x5f, 0x5f, 0x67, | ||
| 40 | 0x6d, 0x6f, 0x6e, 0x5f, 0x73, 0x74, 0x61, 0x72, 0x74, 0x5f, 0x5f, 0x00, 0x6c, 0x69, 0x62, 0x63, | ||
| 41 | 0x2e, 0x73, 0x6f, 0x2e, 0x36, 0x00, 0x70, 0x72, 0x69, 0x6e, 0x74, 0x66, 0x00, 0x5f, 0x5f, 0x63}; | ||
| 42 | #else | ||
| 43 | #define TESTDATA_LEN 3481 | ||
| 44 | static unsigned char testdata[TESTDATA_LEN] = { | ||
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| 257 | 0x0a, 0x76, 0x6f, 0x69, 0x64, 0x20, 0x64, 0x6f, 0x5f, 0x63, 0x72, 0x65, 0x61, 0x74, 0x65, 0x28, | ||
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| 259 | 0x20, 0x73, 0x69, 0x7a, 0x65, 0x29, 0x0a, 0x7b, 0x0a, 0x09, 0x64, 0x6f, 0x5f, 0x6f, 0x70, 0x65, | ||
| 260 | 0x6e, 0x28, 0x66, 0x6e, 0x61, 0x6d, 0x65, 0x2c, 0x20, 0x35, 0x30, 0x30, 0x30, 0x2c, 0x20, 0x73, | ||
| 261 | 0x69, 0x7a, 0x65, 0x29, 0x3b, 0x0a, 0x09, 0x64, 0x6f, 0x5f, 0x63, 0x6c, 0x6f, 0x73, 0x65, 0x28, | ||
| 262 | 0x35, 0x30, 0x30, 0x30, 0x29, 0x3b, 0x0a, 0x7d, 0x0a | ||
| 263 | }; | ||
| 264 | #endif | ||
| 265 | static unsigned char comprbuf[TESTDATA_LEN]; | ||
| 266 | static unsigned char decomprbuf[TESTDATA_LEN]; | ||
| 267 | |||
| 268 | int jffs2_decompress(unsigned char comprtype, unsigned char *cdata_in, | ||
| 269 | unsigned char *data_out, uint32_t cdatalen, uint32_t datalen); | ||
| 270 | unsigned char jffs2_compress(unsigned char *data_in, unsigned char *cpage_out, | ||
| 271 | uint32_t *datalen, uint32_t *cdatalen); | ||
| 272 | |||
| 273 | int init_module(void ) { | ||
| 274 | unsigned char comprtype; | ||
| 275 | uint32_t c, d; | ||
| 276 | int ret; | ||
| 277 | |||
| 278 | printk("Original data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", | ||
| 279 | testdata[0],testdata[1],testdata[2],testdata[3], | ||
| 280 | testdata[4],testdata[5],testdata[6],testdata[7], | ||
| 281 | testdata[8],testdata[9],testdata[10],testdata[11], | ||
| 282 | testdata[12],testdata[13],testdata[14],testdata[15]); | ||
| 283 | d = TESTDATA_LEN; | ||
| 284 | c = TESTDATA_LEN; | ||
| 285 | comprtype = jffs2_compress(testdata, comprbuf, &d, &c); | ||
| 286 | |||
| 287 | printk("jffs2_compress used compression type %d. Compressed size %d, uncompressed size %d\n", | ||
| 288 | comprtype, c, d); | ||
| 289 | printk("Compressed data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", | ||
| 290 | comprbuf[0],comprbuf[1],comprbuf[2],comprbuf[3], | ||
| 291 | comprbuf[4],comprbuf[5],comprbuf[6],comprbuf[7], | ||
| 292 | comprbuf[8],comprbuf[9],comprbuf[10],comprbuf[11], | ||
| 293 | comprbuf[12],comprbuf[13],comprbuf[14],comprbuf[15]); | ||
| 294 | |||
| 295 | ret = jffs2_decompress(comprtype, comprbuf, decomprbuf, c, d); | ||
| 296 | printk("jffs2_decompress returned %d\n", ret); | ||
| 297 | printk("Decompressed data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", | ||
| 298 | decomprbuf[0],decomprbuf[1],decomprbuf[2],decomprbuf[3], | ||
| 299 | decomprbuf[4],decomprbuf[5],decomprbuf[6],decomprbuf[7], | ||
| 300 | decomprbuf[8],decomprbuf[9],decomprbuf[10],decomprbuf[11], | ||
| 301 | decomprbuf[12],decomprbuf[13],decomprbuf[14],decomprbuf[15]); | ||
| 302 | if (memcmp(decomprbuf, testdata, d)) | ||
| 303 | printk("Compression and decompression corrupted data\n"); | ||
| 304 | else | ||
| 305 | printk("Compression good for %d bytes\n", d); | ||
| 306 | return 1; | ||
| 307 | } | ||