projects / mirror_ubuntu-zesty-kernel.git / blame
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|---|---|---|
| 7bdf406d TG |
1 | /* |
| 2 | * CDDL HEADER START | |
| 3 | * | |
| 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. | |
| 7 | * | |
| 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. | |
| 12 | * | |
| 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] | |
| 18 | * | |
| 19 | * CDDL HEADER END | |
| 20 | */ | |
| 21 | ||
| 22 | /* | |
| 23 | * Copyright 2009 Sun Microsystems, Inc. All rights reserved. | |
| 24 | * Use is subject to license terms. | |
| 51d97d8f | 25 | * Copyright (c) 2015 by Delphix. All rights reserved. |
| 7bdf406d TG |
26 | */ |
| 27 | ||
| 28 | #ifndef _SYS_ZIO_COMPRESS_H | |
| 29 | #define _SYS_ZIO_COMPRESS_H | |
| 30 | ||
| 7bdf406d TG |
31 | #ifdef __cplusplus |
| 32 | extern "C" { | |
| 33 | #endif | |
| 34 | ||
| 51d97d8f TG |
35 | enum zio_compress { |
| 36 | ZIO_COMPRESS_INHERIT = 0, | |
| 37 | ZIO_COMPRESS_ON, | |
| 38 | ZIO_COMPRESS_OFF, | |
| 39 | ZIO_COMPRESS_LZJB, | |
| 40 | ZIO_COMPRESS_EMPTY, | |
| 41 | ZIO_COMPRESS_GZIP_1, | |
| 42 | ZIO_COMPRESS_GZIP_2, | |
| 43 | ZIO_COMPRESS_GZIP_3, | |
| 44 | ZIO_COMPRESS_GZIP_4, | |
| 45 | ZIO_COMPRESS_GZIP_5, | |
| 46 | ZIO_COMPRESS_GZIP_6, | |
| 47 | ZIO_COMPRESS_GZIP_7, | |
| 48 | ZIO_COMPRESS_GZIP_8, | |
| 49 | ZIO_COMPRESS_GZIP_9, | |
| 50 | ZIO_COMPRESS_ZLE, | |
| 51 | ZIO_COMPRESS_LZ4, | |
| 52 | ZIO_COMPRESS_FUNCTIONS | |
| 53 | }; | |
| 54 | ||
| 7bdf406d TG |
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); | |
| 61 | ||
| 62 | /* | |
| 63 | * Information about each compression function. | |
| 64 | */ | |
| 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; | |
| 71 | ||
| 72 | extern zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS]; | |
| 73 | ||
| 74 | /* | |
| 75 | * lz4 compression init & free | |
| 76 | */ | |
| 77 | extern void lz4_init(void); | |
| 78 | extern void lz4_fini(void); | |
| 79 | ||
| 80 | /* | |
| 81 | * Compression routines. | |
| 82 | */ | |
| 83 | extern size_t lzjb_compress(void *src, void *dst, size_t s_len, size_t d_len, | |
| 84 | int level); | |
| 85 | extern int lzjb_decompress(void *src, void *dst, size_t s_len, size_t d_len, | |
| 86 | int level); | |
| 87 | extern size_t gzip_compress(void *src, void *dst, size_t s_len, size_t d_len, | |
| 88 | int level); | |
| 89 | extern int gzip_decompress(void *src, void *dst, size_t s_len, size_t d_len, | |
| 90 | int level); | |
| 91 | extern size_t zle_compress(void *src, void *dst, size_t s_len, size_t d_len, | |
| 92 | int level); | |
| 93 | extern int zle_decompress(void *src, void *dst, size_t s_len, size_t d_len, | |
| 94 | int level); | |
| 95 | extern size_t lz4_compress_zfs(void *src, void *dst, size_t s_len, size_t d_len, | |
| 96 | int level); | |
| 97 | extern int lz4_decompress_zfs(void *src, void *dst, size_t s_len, size_t d_len, | |
| 98 | int level); | |
| 99 | ||
| 100 | /* | |
| 101 | * Compress and decompress data if necessary. | |
| 102 | */ | |
| 103 | extern size_t zio_compress_data(enum zio_compress c, void *src, void *dst, | |
| 104 | size_t s_len); | |
| 105 | extern int zio_decompress_data(enum zio_compress c, void *src, void *dst, | |
| 106 | size_t s_len, size_t d_len); | |
| 107 | ||
| 108 | #ifdef __cplusplus | |
| 109 | } | |
| 110 | #endif | |
| 111 | ||
| 112 | #endif /* _SYS_ZIO_COMPRESS_H */ |