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 2009 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
27 * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
30 #ifndef _SYS_ZIO_COMPRESS_H
31 #define _SYS_ZIO_COMPRESS_H
39 /* Common signature for all zio compress functions. */
40 typedef size_t zio_compress_func_t(void *src, void *dst,
41 size_t s_len, size_t d_len, int);
42 /* Common signature for all zio decompress functions. */
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,
69 extern size_t zle_compress(void *src, void *dst, size_t s_len, size_t d_len,
71 extern int zle_decompress(void *src, void *dst, size_t s_len, size_t d_len,
73 extern size_t lz4_compress(void *src, void *dst, size_t s_len, size_t d_len,
75 extern int lz4_decompress(void *src, void *dst, size_t s_len, size_t d_len,
79 * Compress and decompress data if necessary.
81 extern size_t zio_compress_data(enum zio_compress c, void *src, void *dst,
82 size_t s_len, size_t minblocksize);
83 extern int zio_decompress_data(enum zio_compress c, void *src, void *dst,
84 size_t s_len, size_t d_len);
87 * Module lifetime management.
89 extern void zio_compress_init(void);
90 extern void zio_compress_fini(void);
96 #endif /* _SYS_ZIO_COMPRESS_H */