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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2005 Poul-Henning Kamp. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/*
* This file documents a private interface and it SHALL only be used
* by kern/kern_conf.c and fs/devfs/...
*/
#ifndef _FS_DEVFS_DEVFS_INT_H_
#define _FS_DEVFS_DEVFS_INT_H_
#include <sys/queue.h>
#ifdef _KERNEL
struct devfs_dirent;
struct devfs_mount;
struct cdev_privdata {
struct file *cdpd_fp;
void *cdpd_data;
void (*cdpd_dtr)(void *);
LIST_ENTRY(cdev_privdata) cdpd_list;
};
struct cdev_priv {
struct cdev cdp_c;
TAILQ_ENTRY(cdev_priv) cdp_list;
u_int cdp_inode;
u_int cdp_flags;
#define CDP_ACTIVE (1 << 0)
#define CDP_SCHED_DTR (1 << 1)
#define CDP_UNREF_DTR (1 << 2)
u_int cdp_inuse;
u_int cdp_maxdirent;
struct devfs_dirent **cdp_dirents;
struct devfs_dirent *cdp_dirent0;
TAILQ_ENTRY(cdev_priv) cdp_dtr_list;
void (*cdp_dtr_cb)(void *);
void *cdp_dtr_cb_arg;
LIST_HEAD(, cdev_privdata) cdp_fdpriv;
struct mtx cdp_threadlock;
};
#define cdev2priv(c) __containerof(c, struct cdev_priv, cdp_c)
struct cdev *devfs_alloc(int);
int devfs_dev_exists(const char *);
void devfs_free(struct cdev *);
void devfs_create(struct cdev *);
void devfs_destroy(struct cdev *);
void devfs_destroy_cdevpriv(struct cdev_privdata *);
int devfs_dir_find(const char *);
void devfs_dir_ref_de(struct devfs_mount *, struct devfs_dirent *);
void devfs_dir_unref_de(struct devfs_mount *, struct devfs_dirent *);
int devfs_pathpath(const char *, const char *);
extern struct unrhdr *devfs_inos;
extern struct mtx devmtx;
extern struct mtx devfs_de_interlock;
extern struct sx clone_drain_lock;
extern struct mtx cdevpriv_mtx;
extern TAILQ_HEAD(cdev_priv_list, cdev_priv) cdevp_list;
#define dev_lock_assert_locked() mtx_assert(&devmtx, MA_OWNED)
#define dev_lock_assert_unlocked() mtx_assert(&devmtx, MA_NOTOWNED)
#endif /* _KERNEL */
#endif /* !_FS_DEVFS_DEVFS_INT_H_ */
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