xref: /freebsd/usr.bin/mkuzip/mkuz_cloop.h (revision fd45b686f9d92f583366c75b22c04c7ee49709c0)
1 /*
2  * Copyright (c) 2004-2016 Maxim Sobolev <sobomax@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 /* CLOOP format and related constants */
28 
29 /*
30  * Integer values (block size, number of blocks, offsets)
31  * are stored in big-endian (network) order on disk.
32  */
33 
34 #define CLOOP_MAGIC_LEN 128
35 #define CLOOP_OFS_COMPR 0x0b
36 #define CLOOP_OFS_VERSN (CLOOP_OFS_COMPR + 1)
37 
38 #define CLOOP_MAJVER_2	'2'
39 #define CLOOP_MAJVER_3	'3'
40 #define CLOOP_MAJVER_4	'4'
41 
42 #define CLOOP_COMP_LIBZ	'V'
43 #define	CLOOP_COMP_LZMA	'L'
44 #define	CLOOP_COMP_ZSTD	'Z'
45 
46 struct cloop_header {
47         char magic[CLOOP_MAGIC_LEN];    /* cloop magic */
48         uint32_t blksz;                 /* block size */
49         uint32_t nblocks;               /* number of blocks */
50 };
51