xref: /titanic_41/usr/src/uts/common/sys/zmod.h (revision 0bb073995ac5a95bd35f2dd790df1ea3d8c2d507)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #ifndef	_ZMOD_H
28 #define	_ZMOD_H
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 /*
37  * zmod - RFC-1950-compatible decompression routines
38  *
39  * This file provides the public interfaces to zmod, an in-kernel RFC 1950
40  * decompression library.  More information about the implementation of these
41  * interfaces can be found in the usr/src/uts/common/zmod/ directory.
42  */
43 
44 #define	Z_OK		0
45 #define	Z_STREAM_END	1
46 #define	Z_NEED_DICT	2
47 #define	Z_ERRNO		(-1)
48 #define	Z_STREAM_ERROR	(-2)
49 #define	Z_DATA_ERROR	(-3)
50 #define	Z_MEM_ERROR	(-4)
51 #define	Z_BUF_ERROR	(-5)
52 #define	Z_VERSION_ERROR	(-6)
53 
54 #define	Z_NO_COMPRESSION	0
55 #define	Z_BEST_SPEED		1
56 #define	Z_BEST_COMPRESSION	9
57 #define	Z_DEFAULT_COMPRESSION	(-1)
58 
59 extern int z_uncompress(void *, size_t *, const void *, size_t);
60 extern int z_compress(void *, size_t *, const void *, size_t);
61 extern int z_compress_level(void *, size_t *, const void *, size_t, int);
62 extern const char *z_strerror(int);
63 
64 #ifdef	__cplusplus
65 }
66 #endif
67 
68 #endif	/* _ZMOD_H */
69