83 lines
1.9 KiB
C
83 lines
1.9 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 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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#pragma ident "%Z%%M% %I% %E% SMI"
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#include <sys/debug.h>
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#include <sys/types.h>
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#ifdef _KERNEL
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#include <sys/systm.h>
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#include <sys/zmod.h>
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typedef size_t zlen_t;
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#define compress_func z_compress_level
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#define uncompress_func z_uncompress
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#else /* _KERNEL */
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#include <strings.h>
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#include <zlib.h>
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typedef uLongf zlen_t;
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#define compress_func compress2
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#define uncompress_func uncompress
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#endif
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size_t
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gzip_compress(void *s_start, void *d_start, size_t s_len, size_t d_len, int n)
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{
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zlen_t dstlen = d_len;
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ASSERT(d_len <= s_len);
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if (compress_func(d_start, &dstlen, s_start, s_len, n) != Z_OK) {
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if (d_len != s_len)
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return (s_len);
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bcopy(s_start, d_start, s_len);
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return (s_len);
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}
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return ((size_t) dstlen);
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}
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/*ARGSUSED*/
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int
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gzip_decompress(void *s_start, void *d_start, size_t s_len, size_t d_len, int n)
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{
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zlen_t dstlen = d_len;
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ASSERT(d_len >= s_len);
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if (uncompress_func(d_start, &dstlen, s_start, s_len) != Z_OK)
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return (-1);
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return (0);
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}
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