1 /*- 2 * Copyright (c) 2005 Poul-Henning Kamp. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Neither the name of the University nor the names of its contributors 10 * may be used to endorse or promote products derived from this software 11 * without specific prior written permission. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 * 25 * $FreeBSD$ 26 */ 27 28 /* 29 * This file documents a private interface and it SHALL only be used 30 * by kern/kern_conf.c and fs/devfs/... 31 */ 32 33 #ifndef _FS_DEVFS_DEVFS_INT_H_ 34 #define _FS_DEVFS_DEVFS_INT_H_ 35 36 #include <sys/queue.h> 37 38 #ifdef _KERNEL 39 40 struct devfs_dirent; 41 42 struct cdev_priv { 43 struct cdev cdp_c; 44 TAILQ_ENTRY(cdev_priv) cdp_list; 45 46 u_int cdp_inode; 47 48 u_int cdp_flags; 49 #define CDP_ACTIVE (1 << 0) 50 51 u_int cdp_inuse; 52 u_int cdp_maxdirent; 53 struct devfs_dirent **cdp_dirents; 54 struct devfs_dirent *cdp_dirent0; 55 }; 56 57 struct cdev *devfs_alloc(void); 58 void devfs_free(struct cdev *); 59 void devfs_create(struct cdev *dev); 60 void devfs_destroy(struct cdev *dev); 61 62 extern struct unrhdr *devfs_inos; 63 extern struct mtx devmtx; 64 extern struct mtx devfs_de_interlock; 65 extern TAILQ_HEAD(cdev_priv_list, cdev_priv) cdevp_list; 66 67 #endif /* _KERNEL */ 68 69 #endif /* !_FS_DEVFS_DEVFS_INT_H_ */ 70