FreeBSD/Linux Kernel Cross Reference
sys/sys/devfsext.h

     /*
      * Copyright 1997,1998 Julian Elischer.  All rights reserved.
      * julian@freebsd.org
      * 
      * 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. Redistributions in binary form must reproduce the above copyright notice,
     *     this list of conditions and the following disclaimer in the documentation
     *     and/or other materials provided with the distribution.
     * 
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ``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 HOLDER 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.
     * 
     * $FreeBSD$
     */
    
    #ifndef _SYS_DEVFSEXT_H_
    #define _SYS_DEVFSEXT_H_
    
    /*
     * Make a device at a path, and get a cookie for it in return.
     * Specify the type, the minor number and the devsw entry to use,
     * and the initial default perms/ownerships.
     */
    void    *devfs_add_devswf __P((void *devsw, int minor, int chrblk, uid_t uid,
                                   gid_t gid, int perms, char *fmt, ...))
                                   __printflike(7, 8);
    /*
     * Make a link to a device you already made, and have the cookie for 
     * We get another cookie, but for now, it can be discarded, as
     * at the moment there is nothing you can do with it that you couldn't do
     * with the original cookie. ( XXX this might be something I should change )
     */
    void    *devfs_makelink __P((void *original, char *fmt, ...)) __printflike(2, 3);
    
    /*
     * Remove all instances of a device you have made. INCLUDING LINKS.
     * I.e. either the cookie from the original device or the cookie
     * from a link will have the effect of removing both entries.
     * Removing with BOTH an original cookie and one from a link is
     * likely to cause a panic.
     */
    void    devfs_remove_dev __P((void *devnmp));
    
    /*
     * Check if a device exists and is the type you need. Returns NULL or a
     * cookie that can be used to try 'open' the device. XXX This is a bit
     * of a duplication of devfs_lookup(). I might one day try merge them a bit.
     * Used for mountroot under DEVFS. Path is relative to the base of the devfs.
     */
    struct vnode *devfs_open_device __P((char *path, int devtype));
    void devfs_close_device __P((struct vnode *vn));
    
    dev_t devfs_vntodev __P((struct vnode *vn)); /* extract dev_t from devfs vn */
    
    #define DV_CHR 0
    #define DV_BLK 1
    #define DV_DEV 2
    
    /* XXX */
    #define UID_ROOT        0
    #define UID_BIN         3
    #define UID_UUCP        66
    
    /* XXX */
    #define GID_WHEEL       0
    #define GID_KMEM        2
    #define GID_OPERATOR    5
    #define GID_BIN         7
    #define GID_GAMES       13
    #define GID_DIALER      68
    
    #endif /* !_SYS_DEVFSEXT_H_ */

Cache object: 6f0b91d67c6235391fd497a0eb19f2d2