devfs_int.h revision 163481 
1/*-
2 * Copyright (c) 2005 Poul-Henning Kamp.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Neither the name of the University nor the names of its contributors
10 *    may be used to endorse or promote products derived from this software
11 *    without specific prior written permission.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD: head/sys/fs/devfs/devfs_int.h 163481 2006-10-18 11:17:14Z kib $
26 */
27
28/*
29 * This file documents a private interface and it SHALL only be used
30 * by kern/kern_conf.c and fs/devfs/...
31 */
32
33#ifndef _FS_DEVFS_DEVFS_INT_H_
34#define	_FS_DEVFS_DEVFS_INT_H_
35
36#include <sys/queue.h>
37
38#ifdef _KERNEL
39
40struct devfs_dirent;
41
42struct cdev_priv {
43	struct cdev		cdp_c;
44	TAILQ_ENTRY(cdev_priv)	cdp_list;
45
46	u_int			cdp_inode;
47
48	u_int			cdp_flags;
49#define CDP_ACTIVE		(1 << 0)
50
51	u_int			cdp_inuse;
52	u_int			cdp_maxdirent;
53	struct devfs_dirent	**cdp_dirents;
54	struct devfs_dirent	*cdp_dirent0;
55};
56
57struct cdev *devfs_alloc(void);
58void devfs_free(struct cdev *);
59void devfs_create(struct cdev *dev);
60void devfs_destroy(struct cdev *dev);
61
62extern struct unrhdr *devfs_inos;
63extern struct mtx devmtx;
64extern struct mtx devfs_de_interlock;
65extern TAILQ_HEAD(cdev_priv_list, cdev_priv) cdevp_list;
66
67#endif /* _KERNEL */
68
69#endif /* !_FS_DEVFS_DEVFS_INT_H_ */
70