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git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blob - zfs/module/zfs/gzip.c
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.
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.
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]
23 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
29 #include <sys/debug.h>
30 #include <sys/types.h>
34 #include <sys/systm.h>
37 typedef size_t zlen_t
;
38 #define compress_func z_compress_level
39 #define uncompress_func z_uncompress
46 typedef uLongf zlen_t
;
47 #define compress_func compress2
48 #define uncompress_func uncompress
53 gzip_compress(void *s_start
, void *d_start
, size_t s_len
, size_t d_len
, int n
)
55 zlen_t dstlen
= d_len
;
57 ASSERT(d_len
<= s_len
);
59 if (compress_func(d_start
, &dstlen
, s_start
, s_len
, n
) != Z_OK
) {
63 bcopy(s_start
, d_start
, s_len
);
67 return ((size_t) dstlen
);
72 gzip_decompress(void *s_start
, void *d_start
, size_t s_len
, size_t d_len
, int n
)
74 zlen_t dstlen
= d_len
;
76 ASSERT(d_len
>= s_len
);
78 if (uncompress_func(d_start
, &dstlen
, s_start
, s_len
) != Z_OK
)