pseudofs_internal.h revision 168637 
1/*-
2 * Copyright (c) 2001 Dag-Erling Co�dan Sm�rgrav
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 *      $FreeBSD: head/sys/fs/pseudofs/pseudofs_internal.h 168637 2007-04-11 22:40:57Z des $
29 */
30
31#ifndef _PSEUDOFS_INTERNAL_H_INCLUDED
32#define _PSEUDOFS_INTERNAL_H_INCLUDED
33
34/*
35 * Sysctl subtree
36 */
37SYSCTL_DECL(_vfs_pfs);
38
39/*
40 * Vnode data
41 */
42struct pfs_vdata {
43	struct pfs_node	*pvd_pn;
44	pid_t		 pvd_pid;
45	struct vnode	*pvd_vnode;
46	struct pfs_vdata*pvd_prev, *pvd_next;
47	int		 pvd_dead:1;
48};
49
50/*
51 * Vnode cache
52 */
53void	 pfs_vncache_load	(void);
54void	 pfs_vncache_unload	(void);
55int	 pfs_vncache_alloc	(struct mount *, struct vnode **,
56				 struct pfs_node *, pid_t pid);
57int	 pfs_vncache_free	(struct vnode *);
58
59/*
60 * File number bitmap
61 */
62void	 pfs_fileno_init	(struct pfs_info *);
63void	 pfs_fileno_uninit	(struct pfs_info *);
64void	 pfs_fileno_alloc	(struct pfs_info *, struct pfs_node *);
65void	 pfs_fileno_free	(struct pfs_info *, struct pfs_node *);
66
67#endif
68