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 struct devfs_mount; 42 43 struct cdev_privdata { 44 struct file *cdpd_fp; 45 void *cdpd_data; 46 void (*cdpd_dtr)(void *); 47 LIST_ENTRY(cdev_privdata) cdpd_list; 48 }; 49 50 struct cdev_priv { 51 struct cdev cdp_c; 52 TAILQ_ENTRY(cdev_priv) cdp_list; 53 54 u_int cdp_inode; 55 56 u_int cdp_flags; 57 #define CDP_ACTIVE (1 << 0) 58 #define CDP_SCHED_DTR (1 << 1) 59 60 u_int cdp_inuse; 61 u_int cdp_maxdirent; 62 struct devfs_dirent **cdp_dirents; 63 struct devfs_dirent *cdp_dirent0; 64 65 TAILQ_ENTRY(cdev_priv) cdp_dtr_list; 66 void (*cdp_dtr_cb)(void *); 67 void *cdp_dtr_cb_arg; 68 69 LIST_HEAD(, cdev_privdata) cdp_fdpriv; 70 }; 71 72 #define cdev2priv(c) member2struct(cdev_priv, cdp_c, c) 73 74 struct cdev *devfs_alloc(int); 75 int devfs_dev_exists(const char *); 76 void devfs_free(struct cdev *); 77 void devfs_create(struct cdev *); 78 void devfs_destroy(struct cdev *); 79 void devfs_destroy_cdevpriv(struct cdev_privdata *); 80 81 int devfs_dir_find(const char *); 82 void devfs_dir_ref_de(struct devfs_mount *, struct devfs_dirent *); 83 void devfs_dir_unref_de(struct devfs_mount *, struct devfs_dirent *); 84 int devfs_pathpath(const char *, const char *); 85 86 extern struct unrhdr *devfs_inos; 87 extern struct mtx devmtx; 88 extern struct mtx devfs_de_interlock; 89 extern struct sx clone_drain_lock; 90 extern struct mtx cdevpriv_mtx; 91 extern TAILQ_HEAD(cdev_priv_list, cdev_priv) cdevp_list; 92 93 #endif /* _KERNEL */ 94 95 #endif /* !_FS_DEVFS_DEVFS_INT_H_ */ 96