1/*-
2 * ----------------------------------------------------------------------------
3 * "THE BEER-WARE LICENSE" (Revision 42):
4 * <phk@FreeBSD.org> wrote this file.  As long as you retain this notice you
5 * can do whatever you want with this stuff. If we meet some day, and you think
6 * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
7 * ----------------------------------------------------------------------------
8 *
9 * $FreeBSD$
10 *
11 */
12#ifndef	_SYS_INFLATE_H_
13#define	_SYS_INFLATE_H_
14
15#if defined(_KERNEL) || defined(KZIP)
16
17#define GZ_EOF -1
18
19#define GZ_WSIZE 0x8000
20
21/*
22 * Global variables used by inflate and friends.
23 * This structure is used in order to make inflate() reentrant.
24 */
25struct inflate {
26	/* Public part */
27
28	/* This pointer is passed along to the two functions below */
29	void           *gz_private;
30
31	/* Fetch next character to be uncompressed */
32	int             (*gz_input)(void *);
33
34	/* Dispose of uncompressed characters */
35	int             (*gz_output)(void *, u_char *, u_long);
36
37	/* Private part */
38	u_long          gz_bb;	/* bit buffer */
39	unsigned        gz_bk;	/* bits in bit buffer */
40	unsigned        gz_hufts;	/* track memory usage */
41	struct huft    *gz_fixed_tl;	/* must init to NULL !! */
42	struct huft    *gz_fixed_td;
43	int             gz_fixed_bl;
44	int             gz_fixed_bd;
45	u_char         *gz_slide;
46	unsigned        gz_wp;
47};
48
49int inflate(struct inflate *);
50
51#endif	/* _KERNEL || KZIP */
52
53#endif	/* ! _SYS_INFLATE_H_ */
54