devfs_int.h

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2005 Poul-Henning Kamp.  All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    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.
   14  *
   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
   25  * SUCH DAMAGE.
   26  *
   27  * $FreeBSD$
   28  */
   29 
   30 /*
   31  * This file documents a private interface and it SHALL only be used
   32  * by kern/kern_conf.c and fs/devfs/...
   33  */
   34 
   35 #ifndef _FS_DEVFS_DEVFS_INT_H_
   36 #define _FS_DEVFS_DEVFS_INT_H_
   37 
   38 #include <sys/queue.h>
   39 
   40 #ifdef _KERNEL
   41 
   42 struct devfs_dirent;
   43 struct devfs_mount;
   44 
   45 struct cdev_privdata {
   46         struct file             *cdpd_fp;
   47         void                    *cdpd_data;
   48         void                    (*cdpd_dtr)(void *);
   49         LIST_ENTRY(cdev_privdata) cdpd_list;
   50 };
   51 
   52 struct cdev_priv {
   53         struct cdev             cdp_c;
   54         TAILQ_ENTRY(cdev_priv)  cdp_list;
   55 
   56         u_int                   cdp_inode;
   57 
   58         u_int                   cdp_flags;
   59 #define CDP_ACTIVE              (1 << 0)
   60 #define CDP_SCHED_DTR           (1 << 1)
   61 #define CDP_UNREF_DTR           (1 << 2)
   62 
   63         u_int                   cdp_inuse;
   64         u_int                   cdp_maxdirent;
   65         struct devfs_dirent     **cdp_dirents;
   66         struct devfs_dirent     *cdp_dirent0;
   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         struct mtx              cdp_threadlock;
   75 };
   76 
   77 #define cdev2priv(c)    __containerof(c, struct cdev_priv, cdp_c)
   78 
   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 *);
   85 
   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 *);
   90 
   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;
   97 
   98 #define dev_lock_assert_locked()        mtx_assert(&devmtx, MA_OWNED)
   99 #define dev_lock_assert_unlocked()      mtx_assert(&devmtx, MA_NOTOWNED)
  100 
  101 #endif /* _KERNEL */
  102 
  103 #endif /* !_FS_DEVFS_DEVFS_INT_H_ */

Cache object: 117cbcb38fb5028429444af60a54feef

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/fs/devfs/devfs_int.h

FreeBSD/Linux Kernel Cross Reference
sys/fs/devfs/devfs_int.h