1 /* $NetBSD: vnode.h,v 1.2 2005/04/11 23:19:24 perseant Exp $ */ 2 /*- 3 * Copyright (c) 2003 The NetBSD Foundation, Inc. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to The NetBSD Foundation 7 * by Konrad E. Schroder <perseant@hhhh.org>. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the NetBSD 20 * Foundation, Inc. and its contributors. 21 * 4. Neither the name of The NetBSD Foundation nor the names of its 22 * contributors may be used to endorse or promote products derived 23 * from this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #define VNODE_HASH_MAX 1024 /* Must be a PO2 */ 39 #define VNODE_CACHE_SIZE 1024 /* Need not be a PO2 */ 40 41 LIST_HEAD(ubuflists, ubuf); 42 LIST_HEAD(uvnodelst, uvnode); 43 LIST_HEAD(vgrlst, vget_reg); 44 45 struct uvnode { 46 int v_fd; 47 int (*v_strategy_op) (struct ubuf *); 48 int (*v_bwrite_op) (struct ubuf *); 49 int (*v_bmap_op) (struct uvnode *, daddr_t, daddr_t *); 50 #define VDIROP 0x1000 /* vnode is involved in a directory op */ 51 #define VDIRTY 0x8000 /* vnode is dirty */ 52 u_int32_t v_flag; 53 void *v_fs; 54 void *v_data; 55 #undef v_usecount 56 int v_usecount; 57 struct ubuflists v_cleanblkhd; /* clean blocklist head */ 58 struct ubuflists v_dirtyblkhd; /* dirty blocklist head */ 59 LIST_ENTRY(uvnode) v_mntvnodes; 60 LIST_ENTRY(uvnode) v_getvnodes; 61 }; 62 63 struct vget_reg { 64 void *vgr_fs; 65 struct uvnode *(*vgr_func) (void *, ino_t); 66 LIST_ENTRY(vget_reg) vgr_list; 67 }; 68 69 #define VOP_STRATEGY(bp) ((bp)->b_vp->v_strategy_op(bp)) 70 #define VOP_BWRITE(bp) ((bp)->b_vp->v_bwrite_op(bp)) 71 #define VOP_BMAP(vp, lbn, daddrp) ((vp)->v_bmap_op((vp), (lbn), (daddrp))) 72 73 extern int fsdirty; 74 extern struct uvnodelst vnodelist; 75 76 int raw_vop_strategy(struct ubuf *); 77 int raw_vop_bwrite(struct ubuf *); 78 int raw_vop_bmap(struct uvnode *, daddr_t, daddr_t *); 79 80 void vnode_destroy(struct uvnode *); 81 struct uvnode *vget(void *, ino_t); 82 void register_vget(void *, struct uvnode *(void *, ino_t)); 83 void vfs_init(void); 84