2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2005 Poul-Henning Kamp. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Neither the name of the University nor the names of its contributors
12 * may be used to endorse or promote products derived from this software
13 * without specific prior written permission.
15 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * This file documents a private interface and it SHALL only be used
32 * by kern/kern_conf.c and fs/devfs/...
35 #ifndef _FS_DEVFS_DEVFS_INT_H_
36 #define _FS_DEVFS_DEVFS_INT_H_
38 #include <sys/queue.h>
45 struct cdev_privdata {
48 void (*cdpd_dtr)(void *);
49 LIST_ENTRY(cdev_privdata) cdpd_list;
54 TAILQ_ENTRY(cdev_priv) cdp_list;
59 #define CDP_ACTIVE (1 << 0)
60 #define CDP_SCHED_DTR (1 << 1)
61 #define CDP_UNREF_DTR (1 << 2)
65 struct devfs_dirent **cdp_dirents;
66 struct devfs_dirent *cdp_dirent0;
68 TAILQ_ENTRY(cdev_priv) cdp_dtr_list;
69 void (*cdp_dtr_cb)(void *);
72 LIST_HEAD(, cdev_privdata) cdp_fdpriv;
74 struct mtx cdp_threadlock;
77 #define cdev2priv(c) __containerof(c, struct cdev_priv, cdp_c)
79 struct cdev *devfs_alloc(int);
80 int devfs_dev_exists(const char *);
81 void devfs_free(struct cdev *);
82 void devfs_create(struct cdev *);
83 void devfs_destroy(struct cdev *);
84 void devfs_destroy_cdevpriv(struct cdev_privdata *);
86 int devfs_dir_find(const char *);
87 void devfs_dir_ref_de(struct devfs_mount *, struct devfs_dirent *);
88 void devfs_dir_unref_de(struct devfs_mount *, struct devfs_dirent *);
89 int devfs_pathpath(const char *, const char *);
91 extern struct unrhdr *devfs_inos;
92 extern struct mtx devmtx;
93 extern struct mtx devfs_de_interlock;
94 extern struct sx clone_drain_lock;
95 extern struct mtx cdevpriv_mtx;
96 extern TAILQ_HEAD(cdev_priv_list, cdev_priv) cdevp_list;
98 #define dev_lock_assert_locked() mtx_assert(&devmtx, MA_OWNED)
99 #define dev_lock_assert_unlocked() mtx_assert(&devmtx, MA_NOTOWNED)
103 #endif /* !_FS_DEVFS_DEVFS_INT_H_ */