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. 25 */ 26 27 #ifndef _SYS_ZIO_COMPRESS_H 28 #define _SYS_ZIO_COMPRESS_H 29 30 #include <sys/zio.h> 31 32 #ifdef __cplusplus 33 extern "C" { 34 #endif 35 36 /* 37 * Common signature for all zio compress/decompress functions. 38 */ 39 typedef size_t zio_compress_func_t(void *src, void *dst, 40 size_t s_len, size_t d_len, int); 41 typedef int zio_decompress_func_t(void *src, void *dst, 42 size_t s_len, size_t d_len, int); 43 44 /* 45 * Information about each compression function. 46 */ 47 typedef struct zio_compress_info { 48 zio_compress_func_t *ci_compress; /* compression function */ 49 zio_decompress_func_t *ci_decompress; /* decompression function */ 50 int ci_level; /* level parameter */ 51 char *ci_name; /* algorithm name */ 52 } zio_compress_info_t; 53 54 extern zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS]; 55 56 /* 57 * Compression routines. 58 */ 59 extern size_t lzjb_compress(void *src, void *dst, size_t s_len, size_t d_len, 60 int level); 61 extern int lzjb_decompress(void *src, void *dst, size_t s_len, size_t d_len, 62 int level); 63 extern size_t gzip_compress(void *src, void *dst, size_t s_len, size_t d_len, 64 int level); 65 extern int gzip_decompress(void *src, void *dst, size_t s_len, size_t d_len, 66 int level); 67 extern size_t zle_compress(void *src, void *dst, size_t s_len, size_t d_len, 68 int level); 69 extern int zle_decompress(void *src, void *dst, size_t s_len, size_t d_len, 70 int level); 71 72 /* 73 * Compress and decompress data if necessary. 74 */ 75 extern size_t zio_compress_data(enum zio_compress c, void *src, void *dst, 76 size_t s_len); 77 extern int zio_decompress_data(enum zio_compress c, void *src, void *dst, 78 size_t s_len, size_t d_len); 79 80 #ifdef __cplusplus 81 } 82 #endif 83 84 #endif /* _SYS_ZIO_COMPRESS_H */ 85