comprtest.c 26 KB

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  1. /* $Id: comprtest.c,v 1.6 2005/11/07 11:14:38 gleixner Exp $ */
  2. #include <linux/kernel.h>
  3. #include <linux/string.h>
  4. #include <linux/module.h>
  5. #include <asm/types.h>
  6. #if 0
  7. #define TESTDATA_LEN 512
  8. static unsigned char testdata[TESTDATA_LEN] = {
  9. 0x7f, 0x45, 0x4c, 0x46, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  10. 0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x60, 0x83, 0x04, 0x08, 0x34, 0x00, 0x00, 0x00,
  11. 0xb0, 0x29, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x20, 0x00, 0x06, 0x00, 0x28, 0x00,
  12. 0x1e, 0x00, 0x1b, 0x00, 0x06, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x34, 0x80, 0x04, 0x08,
  13. 0x34, 0x80, 0x04, 0x08, 0xc0, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,
  14. 0x04, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0xf4, 0x00, 0x00, 0x00, 0xf4, 0x80, 0x04, 0x08,
  15. 0xf4, 0x80, 0x04, 0x08, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
  16. 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x04, 0x08,
  17. 0x00, 0x80, 0x04, 0x08, 0x0d, 0x05, 0x00, 0x00, 0x0d, 0x05, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,
  18. 0x00, 0x10, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x10, 0x05, 0x00, 0x00, 0x10, 0x95, 0x04, 0x08,
  19. 0x10, 0x95, 0x04, 0x08, 0xe8, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00,
  20. 0x00, 0x10, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x58, 0x05, 0x00, 0x00, 0x58, 0x95, 0x04, 0x08,
  21. 0x58, 0x95, 0x04, 0x08, 0xa0, 0x00, 0x00, 0x00, 0xa0, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00,
  22. 0x04, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x08, 0x81, 0x04, 0x08,
  23. 0x08, 0x81, 0x04, 0x08, 0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
  24. 0x04, 0x00, 0x00, 0x00, 0x2f, 0x6c, 0x69, 0x62, 0x2f, 0x6c, 0x64, 0x2d, 0x6c, 0x69, 0x6e, 0x75,
  25. 0x78, 0x2e, 0x73, 0x6f, 0x2e, 0x32, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00,
  26. 0x01, 0x00, 0x00, 0x00, 0x47, 0x4e, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
  27. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
  28. 0x07, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  29. 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  30. 0x04, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  31. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x69, 0x00, 0x00, 0x00,
  32. 0x0c, 0x83, 0x04, 0x08, 0x81, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00,
  33. 0x1c, 0x83, 0x04, 0x08, 0xac, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x57, 0x00, 0x00, 0x00,
  34. 0x2c, 0x83, 0x04, 0x08, 0xdd, 0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x1a, 0x00, 0x00, 0x00,
  35. 0x3c, 0x83, 0x04, 0x08, 0x2e, 0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x21, 0x00, 0x00, 0x00,
  36. 0x4c, 0x83, 0x04, 0x08, 0x7d, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x48, 0x00, 0x00, 0x00,
  37. 0x00, 0x85, 0x04, 0x08, 0x04, 0x00, 0x00, 0x00, 0x11, 0x00, 0x0e, 0x00, 0x01, 0x00, 0x00, 0x00,
  38. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x5f, 0x5f, 0x67,
  39. 0x6d, 0x6f, 0x6e, 0x5f, 0x73, 0x74, 0x61, 0x72, 0x74, 0x5f, 0x5f, 0x00, 0x6c, 0x69, 0x62, 0x63,
  40. 0x2e, 0x73, 0x6f, 0x2e, 0x36, 0x00, 0x70, 0x72, 0x69, 0x6e, 0x74, 0x66, 0x00, 0x5f, 0x5f, 0x63};
  41. #else
  42. #define TESTDATA_LEN 3481
  43. static unsigned char testdata[TESTDATA_LEN] = {
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  262. };
  263. #endif
  264. static unsigned char comprbuf[TESTDATA_LEN];
  265. static unsigned char decomprbuf[TESTDATA_LEN];
  266. int jffs2_decompress(unsigned char comprtype, unsigned char *cdata_in,
  267. unsigned char *data_out, uint32_t cdatalen, uint32_t datalen);
  268. unsigned char jffs2_compress(unsigned char *data_in, unsigned char *cpage_out,
  269. uint32_t *datalen, uint32_t *cdatalen);
  270. int init_module(void ) {
  271. unsigned char comprtype;
  272. uint32_t c, d;
  273. int ret;
  274. printk("Original data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
  275. testdata[0],testdata[1],testdata[2],testdata[3],
  276. testdata[4],testdata[5],testdata[6],testdata[7],
  277. testdata[8],testdata[9],testdata[10],testdata[11],
  278. testdata[12],testdata[13],testdata[14],testdata[15]);
  279. d = TESTDATA_LEN;
  280. c = TESTDATA_LEN;
  281. comprtype = jffs2_compress(testdata, comprbuf, &d, &c);
  282. printk("jffs2_compress used compression type %d. Compressed size %d, uncompressed size %d\n",
  283. comprtype, c, d);
  284. printk("Compressed data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
  285. comprbuf[0],comprbuf[1],comprbuf[2],comprbuf[3],
  286. comprbuf[4],comprbuf[5],comprbuf[6],comprbuf[7],
  287. comprbuf[8],comprbuf[9],comprbuf[10],comprbuf[11],
  288. comprbuf[12],comprbuf[13],comprbuf[14],comprbuf[15]);
  289. ret = jffs2_decompress(comprtype, comprbuf, decomprbuf, c, d);
  290. printk("jffs2_decompress returned %d\n", ret);
  291. printk("Decompressed data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
  292. decomprbuf[0],decomprbuf[1],decomprbuf[2],decomprbuf[3],
  293. decomprbuf[4],decomprbuf[5],decomprbuf[6],decomprbuf[7],
  294. decomprbuf[8],decomprbuf[9],decomprbuf[10],decomprbuf[11],
  295. decomprbuf[12],decomprbuf[13],decomprbuf[14],decomprbuf[15]);
  296. if (memcmp(decomprbuf, testdata, d))
  297. printk("Compression and decompression corrupted data\n");
  298. else
  299. printk("Compression good for %d bytes\n", d);
  300. return 1;
  301. }