1/* $Id: comprtest.c,v 1.1.1.1 2008/10/15 03:27:07 james26_jang Exp $ */
2
3#include <linux/kernel.h>
4#include <linux/string.h>
5#include <linux/module.h>
6#include <asm/types.h>
7#define TESTDATA_LEN 3481
8static unsigned char testdata[TESTDATA_LEN] = {
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227};
228static unsigned char comprbuf[TESTDATA_LEN];
229static unsigned char decomprbuf[TESTDATA_LEN];
230
231int jffs2_decompress(unsigned char comprtype, unsigned char *cdata_in,
232		     unsigned char *data_out, __u32 cdatalen, __u32 datalen);
233unsigned char jffs2_compress(unsigned char *data_in, unsigned char *cpage_out,
234			     __u32 *datalen, __u32 *cdatalen);
235
236int init_module(void ) {
237	unsigned char comprtype;
238	__u32 c, d;
239	int ret;
240
241	printk("Original data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
242	       testdata[0],testdata[1],testdata[2],testdata[3],
243	       testdata[4],testdata[5],testdata[6],testdata[7],
244	       testdata[8],testdata[9],testdata[10],testdata[11],
245	       testdata[12],testdata[13],testdata[14],testdata[15]);
246	d = TESTDATA_LEN;
247	c = TESTDATA_LEN;
248	comprtype = jffs2_compress(testdata, comprbuf, &d, &c);
249
250	printk("jffs2_compress used compression type %d. Compressed size %d, uncompressed size %d\n",
251	       comprtype, c, d);
252	printk("Compressed data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
253	       comprbuf[0],comprbuf[1],comprbuf[2],comprbuf[3],
254	       comprbuf[4],comprbuf[5],comprbuf[6],comprbuf[7],
255	       comprbuf[8],comprbuf[9],comprbuf[10],comprbuf[11],
256	       comprbuf[12],comprbuf[13],comprbuf[14],comprbuf[15]);
257
258	ret = jffs2_decompress(comprtype, comprbuf, decomprbuf, c, d);
259	printk("jffs2_decompress returned %d\n", ret);
260	printk("Decompressed data:  %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
261	       decomprbuf[0],decomprbuf[1],decomprbuf[2],decomprbuf[3],
262	       decomprbuf[4],decomprbuf[5],decomprbuf[6],decomprbuf[7],
263	       decomprbuf[8],decomprbuf[9],decomprbuf[10],decomprbuf[11],
264	       decomprbuf[12],decomprbuf[13],decomprbuf[14],decomprbuf[15]);
265	if (memcmp(decomprbuf, testdata, d))
266		printk("Compression and decompression corrupted data\n");
267	else
268		printk("Compression good for %d bytes\n", d);
269	return 1;
270}
271