2008-11-20 20:01:55 +00:00
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/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
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* Use is subject to license terms.
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*/
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#ifndef _SYS_ZIO_COMPRESS_H
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#define _SYS_ZIO_COMPRESS_H
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2008-12-03 20:09:06 +00:00
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#pragma ident "%Z%%M% %I% %E% SMI"
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2008-11-20 20:01:55 +00:00
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#include <sys/zio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Common signature for all zio compress/decompress functions.
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*/
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typedef size_t zio_compress_func_t(void *src, void *dst,
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size_t s_len, size_t d_len, int);
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typedef int zio_decompress_func_t(void *src, void *dst,
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size_t s_len, size_t d_len, int);
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/*
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* Information about each compression function.
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*/
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typedef struct zio_compress_info {
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zio_compress_func_t *ci_compress; /* compression function */
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zio_decompress_func_t *ci_decompress; /* decompression function */
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int ci_level; /* level parameter */
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char *ci_name; /* algorithm name */
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} zio_compress_info_t;
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extern zio_compress_info_t zio_compress_table[ZIO_COMPRESS_FUNCTIONS];
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/*
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* Compression routines.
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*/
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extern size_t lzjb_compress(void *src, void *dst, size_t s_len, size_t d_len,
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int level);
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extern int lzjb_decompress(void *src, void *dst, size_t s_len, size_t d_len,
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int level);
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extern size_t gzip_compress(void *src, void *dst, size_t s_len, size_t d_len,
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int level);
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extern int gzip_decompress(void *src, void *dst, size_t s_len, size_t d_len,
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int level);
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/*
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* Compress and decompress data if necessary.
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*/
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extern int zio_compress_data(int cpfunc, void *src, uint64_t srcsize,
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void **destp, uint64_t *destsizep, uint64_t *destbufsizep);
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extern int zio_decompress_data(int cpfunc, void *src, uint64_t srcsize,
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void *dest, uint64_t destsize);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _SYS_ZIO_COMPRESS_H */
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