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devfs.h
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devfs_int.h
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Editing: devfs_int.h
/*- * 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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