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
40 * Common signature for all zio compress/decompress functions.
42 typedef size_t zio_compress_func_t(void *src, void *dst,
43 size_t s_len, size_t d_len, int);
44 typedef int zio_decompress_func_t(void *src, void *dst,
45 size_t s_len, size_t d_len, int);
48 * Information about each compression function.
50 typedef struct zio_compress_info {
51 zio_compress_func_t *ci_compress; /* compression function */
52 zio_decompress_func_t *ci_decompress; /* decompression function */
53 int ci_level; /* level parameter */
54 char *ci_name; /* algorithm name */
55 } zio_compress_info_t;
57 extern zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS];
60 * Compression routines.
62 extern size_t lzjb_compress(void *src, void *dst, size_t s_len, size_t d_len,
64 extern int lzjb_decompress(void *src, void *dst, size_t s_len, size_t d_len,
66 extern size_t gzip_compress(void *src, void *dst, size_t s_len, size_t d_len,
68 extern int gzip_decompress(void *src, void *dst, size_t s_len, size_t d_len,
70 extern size_t zle_compress(void *src, void *dst, size_t s_len, size_t d_len,
72 extern int zle_decompress(void *src, void *dst, size_t s_len, size_t d_len,
74 extern size_t lz4_compress(void *src, void *dst, size_t s_len, size_t d_len,
76 extern int lz4_decompress(void *src, void *dst, size_t s_len, size_t d_len,
80 * Compress and decompress data if necessary.
82 extern size_t zio_compress_data(enum zio_compress c, void *src, void *dst,
84 extern int zio_decompress_data(enum zio_compress c, void *src, void *dst,
85 size_t s_len, size_t d_len);
91 #endif /* _SYS_ZIO_COMPRESS_H */