vnode.h revision 1.1 
1/* $NetBSD: vnode.h,v 1.1 2003/03/28 08:09:55 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#define VNODE_CACHE_SIZE 1000
38
39LIST_HEAD(ubuflists, ubuf);
40LIST_HEAD(uvnodelst, uvnode);
41LIST_HEAD(vgrlst,    vget_reg);
42
43struct uvnode {
44	int v_fd;
45	int (*v_strategy_op) (struct ubuf *);
46	int (*v_bwrite_op) (struct ubuf *);
47	int (*v_bmap_op) (struct uvnode *, daddr_t, daddr_t *);
48#define VDIROP          0x1000	/* vnode is involved in a directory op */
49#define	VDIRTY		0x8000	/* vnode is dirty */
50	u_int32_t v_flag;
51	void *v_fs;
52	void *v_data;
53#undef v_usecount
54	int v_usecount;
55	struct ubuflists v_cleanblkhd;	/* clean blocklist head */
56	struct ubuflists v_dirtyblkhd;	/* dirty blocklist head */
57	LIST_ENTRY(uvnode) v_mntvnodes;
58	LIST_ENTRY(uvnode) v_getvnodes;
59};
60
61struct vget_reg {
62	void *vgr_fs;
63	struct uvnode *(*vgr_func) (void *, ino_t);
64	LIST_ENTRY(vget_reg) vgr_list;
65};
66
67#define VOP_STRATEGY(bp)          ((bp)->b_vp->v_strategy_op(bp))
68#define VOP_BWRITE(bp)            ((bp)->b_vp->v_bwrite_op(bp))
69#define VOP_BMAP(vp, lbn, daddrp) ((vp)->v_bmap_op((vp), (lbn), (daddrp)))
70
71extern int fsdirty;
72extern struct uvnodelst vnodelist;
73
74int raw_vop_strategy(struct ubuf *);
75int raw_vop_bwrite(struct ubuf *);
76int raw_vop_bmap(struct uvnode *, daddr_t, daddr_t *);
77
78void vnode_destroy(struct uvnode *);
79struct uvnode *vget(void *, ino_t);
80void register_vget(void *, struct uvnode *(void *, ino_t));
81void vfs_init(void);
82