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.
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.
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]
23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
27 #ifndef _SYS_ZIO_COMPRESS_H
28 #define _SYS_ZIO_COMPRESS_H
30 #pragma ident "%Z%%M% %I% %E% SMI"
39 * Common signature for all zio compress/decompress functions.
41 typedef size_t zio_compress_func_t(void *src, void *dst,
42 size_t s_len, size_t d_len, int);
43 typedef int zio_decompress_func_t(void *src, void *dst,
44 size_t s_len, size_t d_len, int);
47 * Information about each compression function.
49 typedef struct zio_compress_info {
50 zio_compress_func_t *ci_compress; /* compression function */
51 zio_decompress_func_t *ci_decompress; /* decompression function */
52 int ci_level; /* level parameter */
53 char *ci_name; /* algorithm name */
54 } zio_compress_info_t;
56 extern zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS];
59 * Compression routines.
61 extern size_t lzjb_compress(void *src, void *dst, size_t s_len, size_t d_len,
63 extern int lzjb_decompress(void *src, void *dst, size_t s_len, size_t d_len,
65 extern size_t gzip_compress(void *src, void *dst, size_t s_len, size_t d_len,
67 extern int gzip_decompress(void *src, void *dst, size_t s_len, size_t d_len,
71 * Compress and decompress data if necessary.
73 extern int zio_compress_data(int cpfunc, void *src, uint64_t srcsize,
74 void **destp, uint64_t *destsizep, uint64_t *destbufsizep);
75 extern int zio_decompress_data(int cpfunc, void *src, uint64_t srcsize,
76 void *dest, uint64_t destsize);
82 #endif /* _SYS_ZIO_COMPRESS_H */