1/* $OpenBSD: deflate.h,v 1.3 2002/03/14 01:26:51 millert Exp $ */
2
3/*-
4 * Copyright (c) 2001 Jean-Jacques Bernard-Gundol (jj@wabbitt.org)
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *   notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *   notice, this list of conditions and the following disclaimer in the
14 *   documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *   derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30/*
31 * Definition for the wrapper around the deflate compression
32 * algorithm used in /sys/crypto
33 */
34
35#ifndef _CRYPTO_DEFLATE_H_
36#define _CRYPTO_DEFLATE_H_
37
38#define Z_METHOD	8
39#define Z_MEMLEVEL	8
40#define MINCOMP		2	/* won't be used, but must be defined */
41#define ZBUF		10
42
43uint32_t deflate_global(uint8_t *, uint32_t, int, uint8_t **);
44
45/*
46 * We are going to use a combined allocation to hold the metadata
47 * from the struct immediately followed by the real application data.
48 */
49struct deflate_buf {
50	struct deflate_buf *next;
51	uint32_t size;
52	uint8_t data[];
53};
54
55#endif /* _CRYPTO_DEFLATE_H_ */
56