source: rtems-libbsd/freebsd/sys/fs/devfs/devfs_int.h @ b8f7836

5-freebsd-12
Last change on this file since b8f7836 was b8f7836, checked in by Sebastian Huber <sebastian.huber@…>, on Mar 27, 2018 at 12:41:50 PM

DEVFS(5): Fix warning

  • Property mode set to 100644
File size: 3.1 KB
Line 
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 * $FreeBSD$
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;
41struct devfs_mount;
42
43struct cdev_privdata {
44        struct file             *cdpd_fp;
45        void                    *cdpd_data;
46        void                    (*cdpd_dtr)(void *);
47        LIST_ENTRY(cdev_privdata) cdpd_list;
48};
49
50struct cdev_priv {
51        struct cdev             cdp_c;
52        TAILQ_ENTRY(cdev_priv)  cdp_list;
53
54        u_int                   cdp_inode;
55
56        u_int                   cdp_flags;
57#define CDP_ACTIVE              (1 << 0)
58#define CDP_SCHED_DTR           (1 << 1)
59#define CDP_UNREF_DTR           (1 << 2)
60
61#ifndef __rtems__
62        u_int                   cdp_inuse;
63        u_int                   cdp_maxdirent;
64        struct devfs_dirent     **cdp_dirents;
65        struct devfs_dirent     *cdp_dirent0;
66#endif /* __rtems__ */
67
68        TAILQ_ENTRY(cdev_priv)  cdp_dtr_list;
69        void                    (*cdp_dtr_cb)(void *);
70        void                    *cdp_dtr_cb_arg;
71
72        LIST_HEAD(, cdev_privdata) cdp_fdpriv;
73};
74
75#define cdev2priv(c)    __containerof(c, struct cdev_priv, cdp_c)
76
77struct cdev     *devfs_alloc(int);
78int     devfs_dev_exists(const char *);
79void    devfs_free(struct cdev *);
80void    devfs_create(struct cdev *);
81void    devfs_destroy(struct cdev *);
82void    devfs_destroy_cdevpriv(struct cdev_privdata *);
83
84int     devfs_dir_find(const char *);
85void    devfs_dir_ref_de(struct devfs_mount *, struct devfs_dirent *);
86void    devfs_dir_unref_de(struct devfs_mount *, struct devfs_dirent *);
87int     devfs_pathpath(const char *, const char *);
88
89extern struct unrhdr *devfs_inos;
90extern struct mtx devmtx;
91extern struct mtx devfs_de_interlock;
92extern struct sx clone_drain_lock;
93extern struct mtx cdevpriv_mtx;
94extern TAILQ_HEAD(cdev_priv_list, cdev_priv) cdevp_list;
95#ifdef __rtems__
96void devfs_fpdrop(struct file *);
97#endif /* __rtems__ */
98
99#endif /* _KERNEL */
100
101#endif /* !_FS_DEVFS_DEVFS_INT_H_ */
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