1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
|
/*
* Copyright (c) 1982, 1986, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)subr_xxx.c 8.1 (Berkeley) 6/10/93
* $Id: subr_xxx.c,v 1.4 1995/09/10 21:35:51 bde Exp $
*/
/*
* Miscellaneous trivial functions.
*/
#include <sys/param.h>
#include <sys/systm.h>
/*
* Return error for operation not supported
* on a specific object or file type.
*/
int
eopnotsupp()
{
return (EOPNOTSUPP);
}
/*
* Generic null operation, always returns success.
*/
int
nullop()
{
return (0);
}
#include <sys/conf.h>
/*
* Unsupported devswitch functions (e.g. for writing to read-only device).
* XXX may belong elsewhere.
*/
int
noopen(dev, flags, fmt, p)
dev_t dev;
int flags;
int fmt;
struct proc *p;
{
return (ENODEV);
}
int
noclose(dev, flags, fmt, p)
dev_t dev;
int flags;
int fmt;
struct proc *p;
{
return (ENODEV);
}
int
noread(dev, uio, ioflag)
dev_t dev;
struct uio *uio;
int ioflag;
{
return (ENODEV);
}
int
nowrite(dev, uio, ioflag)
dev_t dev;
struct uio *uio;
int ioflag;
{
return (ENODEV);
}
int
noioctl(dev, cmd, data, flags, p)
dev_t dev;
int cmd;
caddr_t data;
int flags;
struct proc *p;
{
return (ENODEV);
}
void
nostop(tp, rw)
struct tty *tp;
int rw;
{
}
int
noreset(dev)
dev_t dev;
{
printf("noreset(0x%x) called\n", dev);
return (ENODEV);
}
struct tty *
nodevtotty(dev)
dev_t dev;
{
return (NULL);
}
int
noselect(dev, rw, p)
dev_t dev;
int rw;
struct proc *p;
{
/* XXX is this distinguished from 1 for data available? */
return (ENODEV);
}
int
nommap(dev, offset, nprot)
dev_t dev;
int offset;
int nprot;
{
/* Don't return ENODEV. That would allow mapping address ENODEV! */
return (-1);
}
int
nodump(dev)
dev_t dev;
{
return (ENODEV);
}
/*
* Null devswitch functions (for when the operation always succeeds).
* XXX may belong elsewhere.
* XXX not all are here (e.g., seltrue() isn't).
*/
/*
* XXX this is probably bogus. Any device that uses it isn't checking the
* minor number.
*/
int
nullopen(dev, flags, fmt, p)
dev_t dev;
int flags;
int fmt;
struct proc *p;
{
return (0);
}
int
nullclose(dev, flags, fmt, p)
dev_t dev;
int flags;
int fmt;
struct proc *p;
{
return (0);
}
/*
* Unconfigured devswitch functions (for unconfigured drivers).
* XXX may belong elsewhere.
*/
int
nxopen(dev, flags, fmt, p)
dev_t dev;
int flags;
int fmt;
struct proc *p;
{
return (ENXIO);
}
/*
* XXX all nx functions except nxopen() should probably go away. They
* probably can't be called for non-open devices.
*/
int
nxclose(dev, flags, fmt, p)
dev_t dev;
int flags;
int fmt;
struct proc *p;
{
printf("nxclose(0x%x) called\n", dev);
return (ENXIO);
}
int
nxread(dev, uio, ioflag)
dev_t dev;
struct uio *uio;
int ioflag;
{
printf("nxread(0x%x) called\n", dev);
return (ENXIO);
}
int
nxwrite(dev, uio, ioflag)
dev_t dev;
struct uio *uio;
int ioflag;
{
printf("nxwrite(0x%x) called\n", dev);
return (ENXIO);
}
int
nxioctl(dev, cmd, data, flags, p)
dev_t dev;
int cmd;
caddr_t data;
int flags;
struct proc *p;
{
printf("nxioctl(0x%x) called\n", dev);
return (ENXIO);
}
int
nxselect(dev, rw, p)
dev_t dev;
int rw;
struct proc *p;
{
printf("nxselect(0x%x) called\n", dev);
/* XXX is this distinguished from 1 for data available? */
return (ENXIO);
}
int
nxdump(dev)
dev_t dev;
{
printf("nxdump(0x%x) called\n", dev);
return (ENXIO);
}
|
