1*fa9e4066Sahrens /* 2*fa9e4066Sahrens * CDDL HEADER START 3*fa9e4066Sahrens * 4*fa9e4066Sahrens * The contents of this file are subject to the terms of the 5*fa9e4066Sahrens * Common Development and Distribution License, Version 1.0 only 6*fa9e4066Sahrens * (the "License"). You may not use this file except in compliance 7*fa9e4066Sahrens * with the License. 8*fa9e4066Sahrens * 9*fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 11*fa9e4066Sahrens * See the License for the specific language governing permissions 12*fa9e4066Sahrens * and limitations under the License. 13*fa9e4066Sahrens * 14*fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 15*fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 17*fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 18*fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 19*fa9e4066Sahrens * 20*fa9e4066Sahrens * CDDL HEADER END 21*fa9e4066Sahrens */ 22*fa9e4066Sahrens /* 23*fa9e4066Sahrens * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24*fa9e4066Sahrens * Use is subject to license terms. 25*fa9e4066Sahrens */ 26*fa9e4066Sahrens 27*fa9e4066Sahrens #ifndef _SYS_ZIO_COMPRESS_H 28*fa9e4066Sahrens #define _SYS_ZIO_COMPRESS_H 29*fa9e4066Sahrens 30*fa9e4066Sahrens #pragma ident "%Z%%M% %I% %E% SMI" 31*fa9e4066Sahrens 32*fa9e4066Sahrens #include <sys/zio.h> 33*fa9e4066Sahrens 34*fa9e4066Sahrens #ifdef __cplusplus 35*fa9e4066Sahrens extern "C" { 36*fa9e4066Sahrens #endif 37*fa9e4066Sahrens 38*fa9e4066Sahrens /* 39*fa9e4066Sahrens * Common signature for all zio compress/decompress functions. 40*fa9e4066Sahrens */ 41*fa9e4066Sahrens typedef size_t zio_compress_func_t(void *src, void *dst, 42*fa9e4066Sahrens size_t s_len, size_t d_len); 43*fa9e4066Sahrens typedef int zio_decompress_func_t(void *src, void *dst, 44*fa9e4066Sahrens size_t s_len, size_t d_len); 45*fa9e4066Sahrens 46*fa9e4066Sahrens /* 47*fa9e4066Sahrens * Information about each compression function. 48*fa9e4066Sahrens */ 49*fa9e4066Sahrens typedef struct zio_compress_info { 50*fa9e4066Sahrens zio_compress_func_t *ci_compress; 51*fa9e4066Sahrens zio_decompress_func_t *ci_decompress; 52*fa9e4066Sahrens char *ci_name; 53*fa9e4066Sahrens } zio_compress_info_t; 54*fa9e4066Sahrens 55*fa9e4066Sahrens extern zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS]; 56*fa9e4066Sahrens 57*fa9e4066Sahrens /* 58*fa9e4066Sahrens * Compression routines. 59*fa9e4066Sahrens */ 60*fa9e4066Sahrens extern size_t lzjb_compress(void *src, void *dst, size_t s_len, size_t d_len); 61*fa9e4066Sahrens extern int lzjb_decompress(void *src, void *dst, size_t s_len, size_t d_len); 62*fa9e4066Sahrens 63*fa9e4066Sahrens /* 64*fa9e4066Sahrens * Compress and decompress data if necessary. 65*fa9e4066Sahrens */ 66*fa9e4066Sahrens extern int zio_compress_data(int cpfunc, void *src, uint64_t srcsize, 67*fa9e4066Sahrens void **destp, uint64_t *destsizep, uint64_t *destbufsizep); 68*fa9e4066Sahrens extern int zio_decompress_data(int cpfunc, void *src, uint64_t srcsize, 69*fa9e4066Sahrens void *dest, uint64_t destsize); 70*fa9e4066Sahrens 71*fa9e4066Sahrens #ifdef __cplusplus 72*fa9e4066Sahrens } 73*fa9e4066Sahrens #endif 74*fa9e4066Sahrens 75*fa9e4066Sahrens #endif /* _SYS_ZIO_COMPRESS_H */ 76