int do_uncompress(void *dst, int dstlen, void *src, int srclen, int type)
{
switch (type)
{
case JFFS2_COMPR_NONE:
memcpy(dst, src, dstlen);
return dstlen;
break;
case JFFS2_COMPR_ZERO:
memset(dst, 0, dstlen);
return dstlen;
break;
case JFFS2_COMPR_RTIME:
rtime_decompress((unsigned char*)src, (unsigned char*)dst, srclen, dstlen);
return dstlen;
case JFFS2_COMPR_RUBINMIPS:
break;
case JFFS2_COMPR_COPY:
break;
case JFFS2_COMPR_DYNRUBIN:
dynrubin_decompress((unsigned char*)src, (unsigned char*)dst, srclen, dstlen);
return dstlen;
case JFFS2_COMPR_ZLIB:
return zlib_decompress((unsigned char*)src, (unsigned char*)dst, srclen, dstlen);
}
printf(" ** unknown compression type %d!\n", type);
return -1;
}
int jffs2_decompress(unsigned char comprtype, unsigned char *cdata_in,
unsigned char *data_out, __u32 cdatalen, __u32 datalen)
{
/* xde */
int i ;
switch (comprtype) {
case JFFS2_COMPR_NONE:
/* This should be special-cased elsewhere, but we might as well deal with it */
memcpy(data_out, cdata_in, datalen);
break;
case JFFS2_COMPR_ZERO:
/* xde memset(data_out, 0, datalen);*/
for (i = 0 ; i < datalen ; i ++)
data_out[i] = 0 ;
break;
case JFFS2_COMPR_ZLIB:
zlib_decompress(cdata_in, data_out, cdatalen, datalen);
break;
case JFFS2_COMPR_RTIME:
rtime_decompress(cdata_in, data_out, cdatalen, datalen);
break;
case JFFS2_COMPR_RUBINMIPS:
#if 0 /* Disabled 23/9/1 */
rubinmips_decompress(cdata_in, data_out, cdatalen, datalen);
#else
printk(KERN_WARNING "JFFS2: Rubinmips compression encountered but support not compiled in!\n");
#endif
break;
case JFFS2_COMPR_DYNRUBIN:
#if 1 /* Phase this one out */
dynrubin_decompress(cdata_in, data_out, cdatalen, datalen);
#else
printk(KERN_WARNING "JFFS2: Dynrubin compression encountered but support not compiled in!\n");
#endif
break;
default:
printk(KERN_NOTICE "Unknown JFFS2 compression type 0x%02x\n", comprtype);
return -EIO;
}
return 0;
}