1/* $NetBSD: vnode.h,v 1.3 2007/10/10 20:42:20 ad 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 *
18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#define VNODE_HASH_MAX   1024 /* Must be a PO2 */
32#define VNODE_CACHE_SIZE 1024 /* Need not be a PO2 */
33
34LIST_HEAD(ubuflists, ubuf);
35LIST_HEAD(uvnodelst, uvnode);
36LIST_HEAD(vgrlst,    vget_reg);
37
38struct uvnode {
39	int v_fd;
40	int (*v_strategy_op) (struct ubuf *);
41	int (*v_bwrite_op) (struct ubuf *);
42	int (*v_bmap_op) (struct uvnode *, daddr_t, daddr_t *);
43	u_int32_t v_uflag;
44	void *v_fs;
45	void *v_data;
46#undef v_usecount
47	int v_usecount;
48	struct ubuflists v_cleanblkhd;	/* clean blocklist head */
49	struct ubuflists v_dirtyblkhd;	/* dirty blocklist head */
50	LIST_ENTRY(uvnode) v_mntvnodes;
51	LIST_ENTRY(uvnode) v_getvnodes;
52};
53
54struct vget_reg {
55	void *vgr_fs;
56	struct uvnode *(*vgr_func) (void *, ino_t);
57	LIST_ENTRY(vget_reg) vgr_list;
58};
59
60#define VOP_STRATEGY(bp)          ((bp)->b_vp->v_strategy_op(bp))
61#define VOP_BWRITE(bp)            ((bp)->b_vp->v_bwrite_op(bp))
62#define VOP_BMAP(vp, lbn, daddrp) ((vp)->v_bmap_op((vp), (lbn), (daddrp)))
63
64extern int fsdirty;
65extern struct uvnodelst vnodelist;
66
67int raw_vop_strategy(struct ubuf *);
68int raw_vop_bwrite(struct ubuf *);
69int raw_vop_bmap(struct uvnode *, daddr_t, daddr_t *);
70
71void vnode_destroy(struct uvnode *);
72struct uvnode *vget(void *, ino_t);
73void register_vget(void *, struct uvnode *(void *, ino_t));
74void vfs_init(void);
75