sys/zio_compress.h

Go to the documentation of this file.

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _SYS_ZIO_COMPRESS_H
#define _SYS_ZIO_COMPRESS_H

#include <sys/zio.h>

#ifdef  __cplusplus
extern "C" {
#endif

typedef size_t zio_compress_func_t(void *src, void *dst,
    size_t s_len, size_t d_len, int);
typedef int zio_decompress_func_t(void *src, void *dst,
    size_t s_len, size_t d_len, int);

typedef struct zio_compress_info {
        zio_compress_func_t     *ci_compress;   
        zio_decompress_func_t   *ci_decompress; 
        int                     ci_level;       
        char                    *ci_name;       
} zio_compress_info_t;

extern zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS];

/*
 * Compression routines.
 */
extern size_t lzjb_compress(void *src, void *dst, size_t s_len, size_t d_len,
    int level);
extern int lzjb_decompress(void *src, void *dst, size_t s_len, size_t d_len,
    int level);
extern size_t gzip_compress(void *src, void *dst, size_t s_len, size_t d_len,
    int level);
extern int gzip_decompress(void *src, void *dst, size_t s_len, size_t d_len,
    int level);
extern size_t zle_compress(void *src, void *dst, size_t s_len, size_t d_len,
    int level);
extern int zle_decompress(void *src, void *dst, size_t s_len, size_t d_len,
    int level);

/*
 * Compress and decompress data if necessary.
 */
extern size_t zio_compress_data(enum zio_compress c, void *src, void *dst,
    size_t s_len);
extern int zio_decompress_data(enum zio_compress c, void *src, void *dst,
    size_t s_len, size_t d_len);

#ifdef  __cplusplus
}
#endif

#endif  /* _SYS_ZIO_COMPRESS_H */