84 lines
2.9 KiB
C
84 lines
2.9 KiB
C
/* $Id: vndcompress.h,v 1.1.1.1 2005/07/25 12:17:59 hubertf Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2005 by Florian Stoehr
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Florian Stoehr
|
|
* 4. The name of Florian Stoehr may not be used to endorse or promote
|
|
* products derived from this software without specific prior written
|
|
* permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY FLORIAN STOEHR ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/*
|
|
* cloop2: File format
|
|
*
|
|
* All numbers are in network byte order!
|
|
*
|
|
* Offset Size Description
|
|
* 0 128 Preamble (actually Linux load instructions)
|
|
* 128 4 Block size
|
|
* 131 4 Number of blocks
|
|
* 135 8*x 64-bit compressed block start offsets (rel. to FILE (!))
|
|
* 135+8*x y Compressed blocks
|
|
*/
|
|
#ifndef __CLCONFIG_H__
|
|
#define __CLCONFIG_H__
|
|
|
|
#include <machine/bswap.h>
|
|
|
|
struct cloop_header;
|
|
|
|
void usage(void);
|
|
void vndcompress(const char *, const char *, uint32_t);
|
|
uint64_t * readheader(int, struct cloop_header *, off_t *);
|
|
void vnduncompress(const char *, const char *);
|
|
|
|
/* Size of the shell command (Linux compatibility) */
|
|
#define CLOOP_SH_SIZE 128
|
|
|
|
/* Atomic BSD block is always 512 bytes */
|
|
#define ATOMBLOCK 512
|
|
|
|
/* The default blocksize (compressed chunk) is 64 KB */
|
|
#define DEF_BLOCKSIZE 128*ATOMBLOCK
|
|
|
|
/*
|
|
* Convert a 64-bit value between network and local byte order
|
|
*/
|
|
#if (_BYTE_ORDER == _BIG_ENDIAN)
|
|
#define SWAPPER(arg) (arg)
|
|
#else
|
|
#define SWAPPER(arg) bswap64(arg)
|
|
#endif
|
|
|
|
struct cloop_header {
|
|
char sh[CLOOP_SH_SIZE];
|
|
uint32_t block_size;
|
|
uint32_t num_blocks;
|
|
};
|
|
|
|
#endif
|