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/*
* 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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SYS_DECOMP_H
#define _SYS_DECOMP_H
#ifdef __cplusplus
extern "C" {
#endif
#define CH_MAGIC_ZLIB 0x5a636d70 /* ZLIB compression */
#define CH_MAGIC_GZIP 0x8B1F /* GZIP compression */
#define CH_VERSION 1
#define CH_ALG_ZLIB 1
struct comphdr {
uint64_t ch_magic;
uint64_t ch_version;
uint64_t ch_algorithm;
uint64_t ch_fsize;
uint64_t ch_blksize;
uint64_t ch_blkmap[1];
};
#define ZMAXBUF(n) ((n) + ((n) / 1000) + 12)
#ifdef _KERNEL
struct dcnode {
struct vnode *dc_vp;
struct vnode *dc_subvp;
struct kmem_cache *dc_bufcache;
kmutex_t dc_lock;
struct dcnode *dc_hash;
struct dcnode *dc_lrunext;
struct dcnode *dc_lruprev;
struct comphdr *dc_hdr;
size_t dc_hdrsize;
size_t dc_zmax;
int dc_mapcnt;
};
#define VTODC(vp) ((struct dcnode *)(vp)->v_data)
#define DCTOV(dp) ((dp)->dc_vp)
struct vnode *decompvp(struct vnode *, struct cred *, caller_context_t *);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _SYS_DECOMP_H */
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