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|
/* $Id: comprtest.c,v 1.4 2001/02/21 14:03:20 dwmw2 Exp $ */
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/module.h>
#include <asm/types.h>
#if 0
#define TESTDATA_LEN 512
static unsigned char testdata[TESTDATA_LEN] = {
0x7f, 0x45, 0x4c, 0x46, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x60, 0x83, 0x04, 0x08, 0x34, 0x00, 0x00, 0x00,
0xb0, 0x29, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x20, 0x00, 0x06, 0x00, 0x28, 0x00,
0x1e, 0x00, 0x1b, 0x00, 0x06, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x34, 0x80, 0x04, 0x08,
0x34, 0x80, 0x04, 0x08, 0xc0, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,
0x04, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0xf4, 0x00, 0x00, 0x00, 0xf4, 0x80, 0x04, 0x08,
0xf4, 0x80, 0x04, 0x08, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x04, 0x08,
0x00, 0x80, 0x04, 0x08, 0x0d, 0x05, 0x00, 0x00, 0x0d, 0x05, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,
0x00, 0x10, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x10, 0x05, 0x00, 0x00, 0x10, 0x95, 0x04, 0x08,
0x10, 0x95, 0x04, 0x08, 0xe8, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00,
0x00, 0x10, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x58, 0x05, 0x00, 0x00, 0x58, 0x95, 0x04, 0x08,
0x58, 0x95, 0x04, 0x08, 0xa0, 0x00, 0x00, 0x00, 0xa0, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00,
0x04, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x08, 0x01, 0x00, 0x00, 0x08, 0x81, 0x04, 0x08,
0x08, 0x81, 0x04, 0x08, 0x20, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
0x04, 0x00, 0x00, 0x00, 0x2f, 0x6c, 0x69, 0x62, 0x2f, 0x6c, 0x64, 0x2d, 0x6c, 0x69, 0x6e, 0x75,
0x78, 0x2e, 0x73, 0x6f, 0x2e, 0x32, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x47, 0x4e, 0x55, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00,
0x07, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x04, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x69, 0x00, 0x00, 0x00,
0x0c, 0x83, 0x04, 0x08, 0x81, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00,
0x1c, 0x83, 0x04, 0x08, 0xac, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x57, 0x00, 0x00, 0x00,
0x2c, 0x83, 0x04, 0x08, 0xdd, 0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x1a, 0x00, 0x00, 0x00,
0x3c, 0x83, 0x04, 0x08, 0x2e, 0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x21, 0x00, 0x00, 0x00,
0x4c, 0x83, 0x04, 0x08, 0x7d, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x48, 0x00, 0x00, 0x00,
0x00, 0x85, 0x04, 0x08, 0x04, 0x00, 0x00, 0x00, 0x11, 0x00, 0x0e, 0x00, 0x01, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x5f, 0x5f, 0x67,
0x6d, 0x6f, 0x6e, 0x5f, 0x73, 0x74, 0x61, 0x72, 0x74, 0x5f, 0x5f, 0x00, 0x6c, 0x69, 0x62, 0x63,
0x2e, 0x73, 0x6f, 0x2e, 0x36, 0x00, 0x70, 0x72, 0x69, 0x6e, 0x74, 0x66, 0x00, 0x5f, 0x5f, 0x63};
#else
#define TESTDATA_LEN 3481
static unsigned char testdata[TESTDATA_LEN] = {
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};
#endif
static unsigned char comprbuf[TESTDATA_LEN];
static unsigned char decomprbuf[TESTDATA_LEN];
int jffs2_decompress(unsigned char comprtype, unsigned char *cdata_in,
unsigned char *data_out, __u32 cdatalen, __u32 datalen);
unsigned char jffs2_compress(unsigned char *data_in, unsigned char *cpage_out,
__u32 *datalen, __u32 *cdatalen);
int init_module(void ) {
unsigned char comprtype;
__u32 c, d;
int ret;
printk("Original data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
testdata[0],testdata[1],testdata[2],testdata[3],
testdata[4],testdata[5],testdata[6],testdata[7],
testdata[8],testdata[9],testdata[10],testdata[11],
testdata[12],testdata[13],testdata[14],testdata[15]);
d = TESTDATA_LEN;
c = TESTDATA_LEN;
comprtype = jffs2_compress(testdata, comprbuf, &d, &c);
printk("jffs2_compress used compression type %d. Compressed size %d, uncompressed size %d\n",
comprtype, c, d);
printk("Compressed data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
comprbuf[0],comprbuf[1],comprbuf[2],comprbuf[3],
comprbuf[4],comprbuf[5],comprbuf[6],comprbuf[7],
comprbuf[8],comprbuf[9],comprbuf[10],comprbuf[11],
comprbuf[12],comprbuf[13],comprbuf[14],comprbuf[15]);
ret = jffs2_decompress(comprtype, comprbuf, decomprbuf, c, d);
printk("jffs2_decompress returned %d\n", ret);
printk("Decompressed data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
decomprbuf[0],decomprbuf[1],decomprbuf[2],decomprbuf[3],
decomprbuf[4],decomprbuf[5],decomprbuf[6],decomprbuf[7],
decomprbuf[8],decomprbuf[9],decomprbuf[10],decomprbuf[11],
decomprbuf[12],decomprbuf[13],decomprbuf[14],decomprbuf[15]);
if (memcmp(decomprbuf, testdata, d))
printk("Compression and decompression corrupted data\n");
else
printk("Compression good for %d bytes\n", d);
return 1;
}
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