1 /* 2 * CDDL HEADER START 3 * 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. 7 * 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. 12 * 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] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _SYS_DECOMP_H 27 #define _SYS_DECOMP_H 28 29 #pragma ident "%Z%%M% %I% %E% SMI" 30 31 #ifdef __cplusplus 32 extern "C" { 33 #endif 34 35 #define CH_MAGIC 0x5a636d70 /* Zcmp */ 36 37 #define CH_VERSION 1 38 39 #define CH_ALG_ZLIB 1 40 41 struct comphdr { 42 uint64_t ch_magic; 43 uint64_t ch_version; 44 uint64_t ch_algorithm; 45 uint64_t ch_fsize; 46 uint64_t ch_blksize; 47 uint64_t ch_blkmap[1]; 48 }; 49 50 #define ZMAXBUF(n) ((n) + ((n) / 1000) + 12) 51 52 #ifdef _KERNEL 53 54 struct dcnode { 55 struct vnode *dc_vp; 56 struct vnode *dc_subvp; 57 struct kmem_cache *dc_bufcache; 58 kmutex_t dc_lock; 59 struct dcnode *dc_hash; 60 struct dcnode *dc_lrunext; 61 struct dcnode *dc_lruprev; 62 struct comphdr *dc_hdr; 63 size_t dc_hdrsize; 64 size_t dc_zmax; 65 int dc_mapcnt; 66 }; 67 68 #define VTODC(vp) ((struct dcnode *)(vp)->v_data) 69 #define DCTOV(dp) ((dp)->dc_vp) 70 71 struct vnode *decompvp(struct vnode *, struct cred *, caller_context_t *); 72 73 #endif 74 75 #ifdef __cplusplus 76 } 77 #endif 78 #endif /* _SYS_DECOMP_H */ 79