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.
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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. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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34 * @(#)conf.h 8.5 (Berkeley) 1/9/95
35 * $FreeBSD: src/sys/sys/conf.h,v 1.103.2.6 2002/03/11 01:14:55 dd Exp $
41 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
44 #include <sys/queue.h>
49 #ifndef _SYS_BIOTRACK_H_
50 #include <sys/biotrack.h>
52 #ifndef _SYS_SYSREF_H_
53 #include <sys/sysref.h>
56 #include <sys/event.h>
58 #include <libprop/proplib.h>
59 #include <sys/param.h>
73 TAILQ_ENTRY(cdev) link;
76 struct cdev *si_parent;
77 LIST_ENTRY(cdev) si_hash;
78 SLIST_HEAD(, vnode) si_hlist;
79 char si_name[SPECNAMELEN + 1];
82 struct dev_ops *si_ops; /* device operations vector */
83 struct dev_ops *si_bops; /* backing devops vector */
84 int si_iosize_max; /* maximum I/O size (for physio &al) */
85 struct sysref si_sysref;
88 struct tty *__sit_tty;
91 struct disk *__sid_disk;
92 struct mount *__sid_mountpoint;
93 int __sid_bsize_phys; /* min physical block size */
94 int __sid_bsize_best; /* optimal block size */
97 struct bio_track si_track_read;
98 struct bio_track si_track_write;
99 time_t si_lastread; /* time_uptime */
100 time_t si_lastwrite; /* time_uptime */
101 struct vm_object *si_object; /* vm_pager support */
102 prop_dictionary_t si_dict;
103 struct kqinfo si_kqinfo; /* degenerate delegated knotes */
106 #define SI_UNUSED01 0x0001
107 #define SI_HASHED 0x0002 /* in (maj,min) hash table */
108 #define SI_OVERRIDE 0x0004 /* override uid, gid, and perms */
109 #define SI_INTERCEPTED 0x0008 /* device ops was intercepted */
110 #define SI_DEVFS_LINKED 0x0010
111 #define SI_REPROBE_TEST 0x0020
112 #define SI_CANFREE 0x0040 /* basically just a propagated D_CANFREE */
114 #define si_tty __si_u.__si_tty.__sit_tty
115 #define si_disk __si_u.__si_disk.__sid_disk
116 #define si_mountpoint __si_u.__si_disk.__sid_mountpoint
117 #define si_bsize_phys __si_u.__si_disk.__sid_bsize_phys
118 #define si_bsize_best __si_u.__si_disk.__sid_bsize_best
120 #define CDEVSW_ALL_MINORS 0 /* mask of 0 always matches 0 */
123 * Special device management
126 #define SPECHASH(rdev) (((unsigned)(minor(rdev)))%SPECHSZ)
129 * Definitions of device driver entry switches
141 typedef int l_open_t (struct cdev *dev, struct tty *tp);
142 typedef int l_close_t (struct tty *tp, int flag);
143 typedef int l_read_t (struct tty *tp, struct uio *uio, int flag);
144 typedef int l_write_t (struct tty *tp, struct uio *uio, int flag);
145 typedef int l_ioctl_t (struct tty *tp, u_long cmd, caddr_t data, int flag,
147 typedef int l_rint_t (int c, struct tty *tp);
148 typedef int l_start_t (struct tty *tp);
149 typedef int l_modem_t (struct tty *tp, int flag);
152 * Line discipline switch table
167 extern struct linesw linesw[];
170 int ldisc_register (int , struct linesw *);
171 void ldisc_deregister (int);
172 #define LDISC_LOAD -1 /* Loadable line discipline */
179 dev_t sw_dev; /* For quasibogus swapdev reporting */
181 int sw_nblks; /* Number of swap blocks on device */
182 int sw_nused; /* swap blocks used on device */
184 struct cdev *sw_device;
187 #define SW_FREED 0x01
188 #define SW_SEQUENTIAL 0x02
189 #define SW_CLOSING 0x04
190 #define sw_freed sw_flags /* XXX compat */
194 l_ioctl_t l_nullioctl;
200 struct devsw_module_data {
201 int (*chainevh)(struct module *, int, void *); /* next handler */
202 void *chainarg; /* arg for next event handler */
203 /* Do not initialize fields hereafter */
206 #define DEV_MODULE(name, evh, arg) \
207 static moduledata_t name##_mod = { \
212 DECLARE_MODULE(name, name##_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE)
214 #define dev2unit(x) ((minor(x) & 0xff) | (minor(x) >> 8))
216 int count_dev (cdev_t dev);
217 void destroy_dev (cdev_t dev);
218 void release_dev (cdev_t dev);
219 cdev_t reference_dev (cdev_t dev);
220 const char *devtoname (cdev_t dev);
221 int iszerodev (cdev_t dev);
223 int lminor (cdev_t dev);
224 cdev_t kgetdiskbyname(const char *name);
225 int dev_is_good(cdev_t dev);
228 * XXX: This included for when DEVFS resurfaces
238 #define GID_OPERATOR 5
242 #define GID_DIALER 68
246 #endif /* _KERNEL || _KERNEL_STRUCTURES */
248 #endif /* !_SYS_CONF_H_ */