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.
28 * Copyright (c) 2015 by Delphix. All rights reserved.
31 #ifndef _SYS_ZIO_COMPRESS_H
32 #define _SYS_ZIO_COMPRESS_H
39 ZIO_COMPRESS_INHERIT = 0,
55 ZIO_COMPRESS_FUNCTIONS
58 /* Common signature for all zio compress functions. */
59 typedef size_t zio_compress_func_t(void *src, void *dst,
60 size_t s_len, size_t d_len, int);
61 /* Common signature for all zio decompress functions. */
62 typedef int zio_decompress_func_t(void *src, void *dst,
63 size_t s_len, size_t d_len, int);
66 * Information about each compression function.
68 typedef struct zio_compress_info {
69 zio_compress_func_t *ci_compress; /* compression function */
70 zio_decompress_func_t *ci_decompress; /* decompression function */
71 int ci_level; /* level parameter */
72 char *ci_name; /* algorithm name */
73 } zio_compress_info_t;
75 extern zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS];
78 * Compression routines.
80 extern size_t lzjb_compress(void *src, void *dst, size_t s_len, size_t d_len,
82 extern int lzjb_decompress(void *src, void *dst, size_t s_len, size_t d_len,
84 extern size_t gzip_compress(void *src, void *dst, size_t s_len, size_t d_len,
86 extern int gzip_decompress(void *src, void *dst, size_t s_len, size_t d_len,
88 extern size_t zle_compress(void *src, void *dst, size_t s_len, size_t d_len,
90 extern int zle_decompress(void *src, void *dst, size_t s_len, size_t d_len,
92 extern void lz4_init(void);
93 extern void lz4_fini(void);
94 extern size_t lz4_compress(void *src, void *dst, size_t s_len, size_t d_len,
96 extern int lz4_decompress(void *src, void *dst, size_t s_len, size_t d_len,
100 * Compress and decompress data if necessary.
102 extern size_t zio_compress_data(enum zio_compress c, void *src, void *dst,
104 extern int zio_decompress_data(enum zio_compress c, void *src, void *dst,
105 size_t s_len, size_t d_len);
108 * Module lifetime management.
110 extern void zio_compress_init(void);
111 extern void zio_compress_fini(void);
117 #endif /* _SYS_ZIO_COMPRESS_H */