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 2007 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 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include <sys/zio.h> 33 34 #ifdef __cplusplus 35 extern "C" { 36 #endif 37 38 /* 39 * Common signature for all zio compress/decompress functions. 40 */ 41 typedef size_t zio_compress_func_t(void *src, void *dst, 42 size_t s_len, size_t d_len, int); 43 typedef int zio_decompress_func_t(void *src, void *dst, 44 size_t s_len, size_t d_len, int); 45 46 /* 47 * Information about each compression function. 48 */ 49 typedef struct zio_compress_info { 50 zio_compress_func_t *ci_compress; /* compression function */ 51 zio_decompress_func_t *ci_decompress; /* decompression function */ 52 int ci_level; /* level parameter */ 53 char *ci_name; /* algorithm name */ 54 } zio_compress_info_t; 55 56 extern zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS]; 57 58 /* 59 * Compression routines. 60 */ 61 extern size_t lzjb_compress(void *src, void *dst, size_t s_len, size_t d_len, 62 int level); 63 extern int lzjb_decompress(void *src, void *dst, size_t s_len, size_t d_len, 64 int level); 65 extern size_t gzip_compress(void *src, void *dst, size_t s_len, size_t d_len, 66 int level); 67 extern int gzip_decompress(void *src, void *dst, size_t s_len, size_t d_len, 68 int level); 69 70 /* 71 * Compress and decompress data if necessary. 72 */ 73 extern int zio_compress_data(int cpfunc, void *src, uint64_t srcsize, 74 void **destp, uint64_t *destsizep, uint64_t *destbufsizep); 75 extern int zio_decompress_data(int cpfunc, void *src, uint64_t srcsize, 76 void *dest, uint64_t destsize); 77 78 #ifdef __cplusplus 79 } 80 #endif 81 82 #endif /* _SYS_ZIO_COMPRESS_H */ 83