mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
307 lines
26 KiB
C
307 lines
26 KiB
C
/* $Id: comprtest.c,v 1.6 2005/11/07 11:14:38 gleixner Exp $ */
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/module.h>
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#include <asm/types.h>
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#if 0
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#define TESTDATA_LEN 512
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static unsigned char testdata[TESTDATA_LEN] = {
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0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x60, 0x83, 0x04, 0x08, 0x34, 0x00, 0x00, 0x00,
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0xb0, 0x29, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x20, 0x00, 0x06, 0x00, 0x28, 0x00,
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0x1e, 0x00, 0x1b, 0x00, 0x06, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x34, 0x80, 0x04, 0x08,
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0x04, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0xf4, 0x00, 0x00, 0x00, 0xf4, 0x80, 0x04, 0x08,
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0xf4, 0x80, 0x04, 0x08, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
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0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x04, 0x08,
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0x00, 0x80, 0x04, 0x08, 0x0d, 0x05, 0x00, 0x00, 0x0d, 0x05, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,
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0x00, 0x10, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x10, 0x05, 0x00, 0x00, 0x10, 0x95, 0x04, 0x08,
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0x10, 0x95, 0x04, 0x08, 0xe8, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00,
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0x07, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x04, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x69, 0x00, 0x00, 0x00,
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0x0c, 0x83, 0x04, 0x08, 0x81, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00,
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0x1c, 0x83, 0x04, 0x08, 0xac, 0x00, 0x00, 0x00, 0x22, 0x00, 0x00, 0x00, 0x57, 0x00, 0x00, 0x00,
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0x2c, 0x83, 0x04, 0x08, 0xdd, 0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x1a, 0x00, 0x00, 0x00,
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0x3c, 0x83, 0x04, 0x08, 0x2e, 0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x21, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x5f, 0x5f, 0x67,
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0x6d, 0x6f, 0x6e, 0x5f, 0x73, 0x74, 0x61, 0x72, 0x74, 0x5f, 0x5f, 0x00, 0x6c, 0x69, 0x62, 0x63,
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#else
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#define TESTDATA_LEN 3481
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static unsigned char testdata[TESTDATA_LEN] = {
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0x69, 0x7a, 0x65, 0x29, 0x3b, 0x0a, 0x09, 0x64, 0x6f, 0x5f, 0x63, 0x6c, 0x6f, 0x73, 0x65, 0x28,
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0x35, 0x30, 0x30, 0x30, 0x29, 0x3b, 0x0a, 0x7d, 0x0a
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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, uint32_t cdatalen, uint32_t datalen);
|
|
unsigned char jffs2_compress(unsigned char *data_in, unsigned char *cpage_out,
|
|
uint32_t *datalen, uint32_t *cdatalen);
|
|
|
|
int init_module(void ) {
|
|
unsigned char comprtype;
|
|
uint32_t 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;
|
|
}
|