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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2014 Garrett D'Amore <garrett@damore.org> 24 * 25 * Copyright (c) 1997-1998 by Sun Microsystems, Inc. 26 * All rights reserved. 27 */ 28 29 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 30 /* All Rights Reserved */ 31 32 33 #ifndef _SYS_FBUF_H 34 #define _SYS_FBUF_H 35 36 #include <sys/vnode.h> 37 38 #ifdef __cplusplus 39 extern "C" { 40 #endif 41 42 /* 43 * A struct fbuf is used to get a mapping to part of a file using the 44 * segkmap facilities. After you get a mapping, you can fbrelse() it 45 * (giving a seg code to pass back to segmap_release), you can fbwrite() 46 * it (causes a synchronous write back using the file mapping information), 47 * or you can fbiwrite it (causing indirect synchronous write back to 48 * the block number given without using the file mapping information). 49 */ 50 51 struct fbuf { 52 caddr_t fb_addr; 53 uint_t fb_count; 54 }; 55 56 extern int fbread(struct vnode *, offset_t, uint_t, enum seg_rw, 57 struct fbuf **); 58 extern void fbzero(struct vnode *, offset_t, uint_t, struct fbuf **); 59 extern int fbwrite(struct fbuf *); 60 extern int fbdwrite(struct fbuf *); 61 extern int fbiwrite(struct fbuf *, struct vnode *, daddr_t bn, int bsize); 62 extern void fbrelse(struct fbuf *, enum seg_rw); 63 64 #ifdef __cplusplus 65 } 66 #endif 67 68 #endif /* _SYS_FBUF_H */ 69