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.
25 * Copyright (c) 2015 by Delphix. All rights reserved.
28 #ifndef _SYS_ZIO_COMPRESS_H
29 #define _SYS_ZIO_COMPRESS_H
36 ZIO_COMPRESS_INHERIT = 0,
52 ZIO_COMPRESS_FUNCTIONS
55 /* Common signature for all zio compress functions. */
56 typedef size_t zio_compress_func_t(void *src, void *dst,
57 size_t s_len, size_t d_len, int);
58 /* Common signature for all zio decompress functions. */
59 typedef int zio_decompress_func_t(void *src, void *dst,
60 size_t s_len, size_t d_len, int);
63 * Information about each compression function.
65 typedef const struct zio_compress_info {
66 zio_compress_func_t *ci_compress; /* compression function */
67 zio_decompress_func_t *ci_decompress; /* decompression function */
68 int ci_level; /* level parameter */
69 char *ci_name; /* algorithm name */
70 } zio_compress_info_t;
72 extern zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS];
75 * lz4 compression init & free
77 extern void lz4_init(void);
78 extern void lz4_fini(void);
81 * Compression routines.
83 extern size_t lzjb_compress(void *src, void *dst, size_t s_len, size_t d_len,
85 extern int lzjb_decompress(void *src, void *dst, size_t s_len, size_t d_len,
87 extern size_t gzip_compress(void *src, void *dst, size_t s_len, size_t d_len,
89 extern int gzip_decompress(void *src, void *dst, size_t s_len, size_t d_len,
91 extern size_t zle_compress(void *src, void *dst, size_t s_len, size_t d_len,
93 extern int zle_decompress(void *src, void *dst, size_t s_len, size_t d_len,
95 extern size_t lz4_compress_zfs(void *src, void *dst, size_t s_len, size_t d_len,
97 extern int lz4_decompress_zfs(void *src, void *dst, size_t s_len, size_t d_len,
101 * Compress and decompress data if necessary.
103 extern size_t zio_compress_data(enum zio_compress c, void *src, void *dst,
105 extern int zio_decompress_data(enum zio_compress c, void *src, void *dst,
106 size_t s_len, size_t d_len);
112 #endif /* _SYS_ZIO_COMPRESS_H */