FreeBSD/Linux Kernel Cross Reference
sys/sys/conf.h
1 /* $NetBSD: conf.h,v 1.131.8.1 2009/06/23 06:56:51 snj Exp $ */
2
3 /*-
4 * Copyright (c) 1990, 1993
5 * The Regents of the University of California. All rights reserved.
6 * (c) UNIX System Laboratories, Inc.
7 * All or some portions of this file are derived from material licensed
8 * to the University of California by American Telephone and Telegraph
9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10 * the permission of UNIX System Laboratories, Inc.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)conf.h 8.5 (Berkeley) 1/9/95
37 */
38
39 #ifndef _SYS_CONF_H_
40 #define _SYS_CONF_H_
41
42 /*
43 * Definitions of device driver entry switches
44 */
45
46 #include <sys/queue.h>
47
48 struct buf;
49 struct knote;
50 struct lwp;
51 struct tty;
52 struct uio;
53 struct vnode;
54
55 /*
56 * Types for d_type
57 */
58 #define D_OTHER 0x0000
59 #define D_TAPE 0x0001
60 #define D_DISK 0x0002
61 #define D_TTY 0x0003
62 #define D_TYPEMASK 0x00ff
63 #define D_MPSAFE 0x0100
64 #define D_NEGOFFSAFE 0x0200
65
66 /*
67 * Block device switch table
68 */
69 struct bdevsw {
70 int (*d_open)(dev_t, int, int, struct lwp *);
71 int (*d_close)(dev_t, int, int, struct lwp *);
72 void (*d_strategy)(struct buf *);
73 int (*d_ioctl)(dev_t, u_long, void *, int, struct lwp *);
74 int (*d_dump)(dev_t, daddr_t, void *, size_t);
75 int (*d_psize)(dev_t);
76 int d_flag;
77 };
78
79 /*
80 * Character device switch table
81 */
82 struct cdevsw {
83 int (*d_open)(dev_t, int, int, struct lwp *);
84 int (*d_close)(dev_t, int, int, struct lwp *);
85 int (*d_read)(dev_t, struct uio *, int);
86 int (*d_write)(dev_t, struct uio *, int);
87 int (*d_ioctl)(dev_t, u_long, void *, int, struct lwp *);
88 void (*d_stop)(struct tty *, int);
89 struct tty * (*d_tty)(dev_t);
90 int (*d_poll)(dev_t, int, struct lwp *);
91 paddr_t (*d_mmap)(dev_t, off_t, int);
92 int (*d_kqfilter)(dev_t, struct knote *);
93 int d_flag;
94 };
95
96 #ifdef _KERNEL
97
98 int devsw_attach(const char *, const struct bdevsw *, int *,
99 const struct cdevsw *, int *);
100 int devsw_detach(const struct bdevsw *, const struct cdevsw *);
101 const struct bdevsw *bdevsw_lookup(dev_t);
102 const struct cdevsw *cdevsw_lookup(dev_t);
103 int bdevsw_lookup_major(const struct bdevsw *);
104 int cdevsw_lookup_major(const struct cdevsw *);
105
106 #define dev_type_open(n) int n (dev_t, int, int, struct lwp *)
107 #define dev_type_close(n) int n (dev_t, int, int, struct lwp *)
108 #define dev_type_read(n) int n (dev_t, struct uio *, int)
109 #define dev_type_write(n) int n (dev_t, struct uio *, int)
110 #define dev_type_ioctl(n) \
111 int n (dev_t, u_long, void *, int, struct lwp *)
112 #define dev_type_stop(n) void n (struct tty *, int)
113 #define dev_type_tty(n) struct tty * n (dev_t)
114 #define dev_type_poll(n) int n (dev_t, int, struct lwp *)
115 #define dev_type_mmap(n) paddr_t n (dev_t, off_t, int)
116 #define dev_type_strategy(n) void n (struct buf *)
117 #define dev_type_dump(n) int n (dev_t, daddr_t, void *, size_t)
118 #define dev_type_size(n) int n (dev_t)
119 #define dev_type_kqfilter(n) int n (dev_t, struct knote *)
120
121 #define noopen ((dev_type_open((*)))enodev)
122 #define noclose ((dev_type_close((*)))enodev)
123 #define noread ((dev_type_read((*)))enodev)
124 #define nowrite ((dev_type_write((*)))enodev)
125 #define noioctl ((dev_type_ioctl((*)))enodev)
126 #define nostop ((dev_type_stop((*)))enodev)
127 #define notty NULL
128 #define nopoll seltrue
129 #define nommap ((dev_type_mmap((*)))enodev)
130 #define nodump ((dev_type_dump((*)))enodev)
131 #define nosize NULL
132 #define nokqfilter seltrue_kqfilter
133
134 #define nullopen ((dev_type_open((*)))nullop)
135 #define nullclose ((dev_type_close((*)))nullop)
136 #define nullread ((dev_type_read((*)))nullop)
137 #define nullwrite ((dev_type_write((*)))nullop)
138 #define nullioctl ((dev_type_ioctl((*)))nullop)
139 #define nullstop ((dev_type_stop((*)))nullop)
140 #define nullpoll ((dev_type_poll((*)))nullop)
141 #define nullmmap ((dev_type_mmap((*)))nullop)
142 #define nulldump ((dev_type_dump((*)))nullop)
143 #define nullkqfilter ((dev_type_kqfilter((*)))eopnotsupp)
144
145 /* device access wrappers. */
146
147 dev_type_open(bdev_open);
148 dev_type_close(bdev_close);
149 dev_type_strategy(bdev_strategy);
150 dev_type_ioctl(bdev_ioctl);
151 dev_type_dump(bdev_dump);
152
153 dev_type_open(cdev_open);
154 dev_type_close(cdev_close);
155 dev_type_read(cdev_read);
156 dev_type_write(cdev_write);
157 dev_type_ioctl(cdev_ioctl);
158 dev_type_stop(cdev_stop);
159 dev_type_tty(cdev_tty);
160 dev_type_poll(cdev_poll);
161 dev_type_mmap(cdev_mmap);
162 dev_type_kqfilter(cdev_kqfilter);
163
164 int cdev_type(dev_t);
165 int bdev_type(dev_t);
166
167 /* symbolic sleep message strings */
168 extern const char devopn[], devio[], devwait[], devin[], devout[];
169 extern const char devioc[], devcls[];
170
171 #endif /* _KERNEL */
172
173 /*
174 * Line discipline switch table
175 */
176 struct linesw {
177 const char *l_name; /* Linesw name */
178
179 LIST_ENTRY(linesw) l_list;
180 u_int l_refcnt; /* locked by ttyldisc_list_slock */
181 int l_no; /* legacy discipline number (for TIOCGETD) */
182
183 int (*l_open) (dev_t, struct tty *);
184 int (*l_close) (struct tty *, int);
185 int (*l_read) (struct tty *, struct uio *, int);
186 int (*l_write) (struct tty *, struct uio *, int);
187 int (*l_ioctl) (struct tty *, u_long, void *, int,
188 struct lwp *);
189 int (*l_rint) (int, struct tty *);
190 int (*l_start) (struct tty *);
191 int (*l_modem) (struct tty *, int);
192 int (*l_poll) (struct tty *, int, struct lwp *);
193 };
194
195 #ifdef _KERNEL
196 void ttyldisc_init(void);
197 int ttyldisc_attach(struct linesw *);
198 int ttyldisc_detach(struct linesw *);
199 struct linesw *ttyldisc_lookup(const char *);
200 struct linesw *ttyldisc_lookup_bynum(int);
201 struct linesw *ttyldisc_default(void);
202 void ttyldisc_release(struct linesw *);
203
204 /* For those defining their own line disciplines: */
205 #define ttynodisc ((int (*)(dev_t, struct tty *))enodev)
206 #define ttyerrclose ((int (*)(struct tty *, int))enodev)
207 #define ttyerrio ((int (*)(struct tty *, struct uio *, int))enodev)
208 #define ttyerrinput ((int (*)(int, struct tty *))enodev)
209 #define ttyerrstart ((int (*)(struct tty *))enodev)
210
211 int ttyerrpoll (struct tty *, int, struct lwp *);
212 int ttynullioctl(struct tty *, u_long, void *, int, struct lwp *);
213
214 int iskmemdev(dev_t);
215 int seltrue_kqfilter(dev_t, struct knote *);
216 #endif
217
218 #ifdef _KERNEL
219
220 #define DEV_MEM 0 /* minor device 0 is physical memory */
221 #define DEV_KMEM 1 /* minor device 1 is kernel memory */
222 #define DEV_NULL 2 /* minor device 2 is EOF/rathole */
223 #ifdef COMPAT_16
224 #define _DEV_ZERO_oARM 3 /* reserved: old ARM /dev/zero minor */
225 #endif
226 #define DEV_ZERO 12 /* minor device 12 is '\0'/rathole */
227
228 #endif /* _KERNEL */
229
230 struct devsw_conv {
231 const char *d_name;
232 int d_bmajor;
233 int d_cmajor;
234 };
235
236 #ifdef _KERNEL
237 void devsw_init(void);
238 const char *devsw_blk2name(int);
239 int devsw_name2blk(const char *, char *, size_t);
240 int devsw_name2chr(const char *, char *, size_t);
241 dev_t devsw_chr2blk(dev_t);
242 dev_t devsw_blk2chr(dev_t);
243 #endif /* _KERNEL */
244
245 #ifdef _KERNEL
246 struct device;
247 void setroot(struct device *, int);
248 void swapconf(void);
249 #endif /* _KERNEL */
250
251 #endif /* !_SYS_CONF_H_ */
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