/* $Id: comprtest.c,v 1.6 2005/11/07 11:14:38 gleixner 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, 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0x2c, 0x20, 0x69, 0x6e, 0x74, 0x20, 0x73, 0x69, 0x7a, 0x65, 0x29, 0x0a, 0x7b, 0x0a, 0x09, 0x64, 0x6f, 0x5f, 0x6f, 0x70, 0x65, 0x6e, 0x28, 0x66, 0x6e, 0x61, 0x6d, 0x65, 0x2c, 0x20, 0x35, 0x30, 0x30, 0x30, 0x2c, 0x20, 0x73, 0x69, 0x7a, 0x65, 0x29, 0x3b, 0x0a, 0x09, 0x64, 0x6f, 0x5f, 0x63, 0x6c, 0x6f, 0x73, 0x65, 0x28, 0x35, 0x30, 0x30, 0x30, 0x29, 0x3b, 0x0a, 0x7d, 0x0a }; #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; }