2 * Copyright (c) 1990, 1993
3 * The Regents of the University of California. All rights reserved.
4 * (c) UNIX System Laboratories, Inc.
5 * All or some portions of this file are derived from material licensed
6 * to the University of California by American Telephone and Telegraph
7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
8 * the permission of UNIX System Laboratories, Inc.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the University of
21 * California, Berkeley and its contributors.
22 * 4. Neither the name of the University nor the names of its contributors
23 * may be used to endorse or promote products derived from this software
24 * without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * @(#)conf.h 8.5 (Berkeley) 1/9/95
39 * $FreeBSD: src/sys/sys/conf.h,v 1.103.2.6 2002/03/11 01:14:55 dd Exp $
40 * $DragonFly: src/sys/sys/conf.h,v 1.18 2007/05/09 00:53:35 dillon Exp $
46 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
49 #include <sys/queue.h>
54 #ifndef _SYS_BIOTRACK_H_
55 #include <sys/biotrack.h>
57 #ifndef _SYS_SYSREF_H_
58 #include <sys/sysref.h>
61 #include <sys/event.h>
63 #include <libprop/proplib.h>
65 #define SPECNAMELEN 63
79 TAILQ_ENTRY(cdev) link;
82 struct cdev *si_parent;
83 LIST_ENTRY(cdev) si_hash;
84 SLIST_HEAD(, vnode) si_hlist;
85 char si_name[SPECNAMELEN + 1];
88 struct dev_ops *si_ops; /* device operations vector */
89 struct dev_ops *si_bops; /* backing devops vector */
90 int si_iosize_max; /* maximum I/O size (for physio &al) */
91 struct sysref si_sysref;
94 struct tty *__sit_tty;
97 struct disk *__sid_disk;
98 struct mount *__sid_mountpoint;
99 int __sid_bsize_phys; /* min physical block size */
100 int __sid_bsize_best; /* optimal block size */
103 struct bio_track si_track_read;
104 struct bio_track si_track_write;
105 time_t si_lastread; /* time_uptime */
106 time_t si_lastwrite; /* time_uptime */
107 struct vm_object *si_object; /* vm_pager support */
108 prop_dictionary_t si_dict;
109 struct kqinfo si_kqinfo; /* degenerate delegated knotes */
112 #define SI_UNUSED01 0x0001
113 #define SI_HASHED 0x0002 /* in (maj,min) hash table */
114 #define SI_OVERRIDE 0x0004 /* override uid, gid, and perms */
115 #define SI_INTERCEPTED 0x0008 /* device ops was intercepted */
116 #define SI_DEVFS_LINKED 0x0010
117 #define SI_REPROBE_TEST 0x0020
118 #define SI_CANFREE 0x0040 /* basically just a propagated D_CANFREE */
120 #define si_tty __si_u.__si_tty.__sit_tty
121 #define si_disk __si_u.__si_disk.__sid_disk
122 #define si_mountpoint __si_u.__si_disk.__sid_mountpoint
123 #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys
124 #define si_bsize_best __si_u.__si_disk.__sid_bsize_best
126 #define CDEVSW_ALL_MINORS 0 /* mask of 0 always matches 0 */
129 * Special device management
132 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ)
135 * Definitions of device driver entry switches
147 typedef int l_open_t (struct cdev *dev, struct tty *tp);
148 typedef int l_close_t (struct tty *tp, int flag);
149 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag);
150 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag);
151 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag,
153 typedef int l_rint_t (int c, struct tty *tp);
154 typedef int l_start_t (struct tty *tp);
155 typedef int l_modem_t (struct tty *tp, int flag);
158 * Line discipline switch table
173 extern struct linesw linesw[];
176 int ldisc_register (int , struct linesw *);
177 void ldisc_deregister (int);
178 #define LDISC_LOAD -1 /* Loadable line discipline */
185 udev_t sw_dev; /* For quasibogus swapdev reporting */
187 int sw_nblks; /* Number of swap blocks on device */
188 int sw_nused; /* swap blocks used on device */
190 struct cdev *sw_device;
193 #define SW_FREED 0x01
194 #define SW_SEQUENTIAL 0x02
195 #define SW_CLOSING 0x04
196 #define sw_freed sw_flags /* XXX compat */
200 l_ioctl_t l_nullioctl;
206 struct devsw_module_data {
207 int (*chainevh)(struct module *, int, void *); /* next handler */
208 void *chainarg; /* arg for next event handler */
209 /* Do not initialize fields hereafter */
212 #define DEV_MODULE(name, evh, arg) \
213 static moduledata_t name##_mod = { \
218 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
220 #define dev2unit(x) ((minor(x) & 0xff) | (minor(x) >> 8))
222 int count_dev (cdev_t dev);
223 void destroy_dev (cdev_t dev);
224 void release_dev (cdev_t dev);
225 cdev_t get_dev (int x, int y);
226 cdev_t reference_dev (cdev_t dev);
227 struct dev_ops *devsw (cdev_t dev);
228 const char *devtoname (cdev_t dev);
229 void freedev (cdev_t dev);
230 int iszerodev (cdev_t dev);
232 int lminor (cdev_t dev);
234 cdev_t kgetdiskbyname(const char *name);
235 int dev_is_good(cdev_t dev);
238 * XXX: This included for when DEVFS resurfaces
248 #define GID_OPERATOR 5
251 #define GID_DIALER 68
254 #endif /* _KERNEL || _KERNEL_STRUCTURES */
256 #endif /* !_SYS_CONF_H_ */