FreeBSD/Linux Kernel Cross Reference
sys/sys/inflate.h
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: releng/5.0/sys/sys/inflate.h 93195 2002-03-26 08:29:40Z phk $
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 */
25 struct 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
49 int inflate(struct inflate *);
50
51 #endif /* _KERNEL || KZIP */
52
53 #endif /* ! _SYS_INFLATE_H_ */
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