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d3cc8b152e
3742 zfs comments need cleaner, more consistent style Reviewed by: Matthew Ahrens <mahrens@delphix.com> Reviewed by: George Wilson <george.wilson@delphix.com> Reviewed by: Eric Schrock <eric.schrock@delphix.com> Approved by: Christopher Siden <christopher.siden@delphix.com> References: https://www.illumos.org/issues/3742 illumos/illumos-gate@f717074149 Ported-by: Richard Yao <ryao@gentoo.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Issue #1775 Porting notes: 1. The change to zfs_vfsops.c was dropped because it involves zfs_mount_label_policy, which does not exist in the Linux port.
94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/*
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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 2009 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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#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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/* Common signature for all zio compress functions. */
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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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/* Common signature for all zio decompress functions. */
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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 const 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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* lz4 compression init & free
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*/
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extern void lz4_init(void);
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extern void lz4_fini(void);
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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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extern size_t zle_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 zle_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 lz4_compress_zfs(void *src, void *dst, size_t s_len, size_t d_len,
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int level);
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extern int lz4_decompress_zfs(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 size_t zio_compress_data(enum zio_compress c, void *src, void *dst,
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size_t s_len);
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extern int zio_decompress_data(enum zio_compress c, void *src, void *dst,
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size_t s_len, size_t d_len);
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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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