1/*
2 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3 *
4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5 *
6 * This file contains Original Code and/or Modifications of Original Code
7 * as defined in and that are subject to the Apple Public Source License
8 * Version 2.0 (the 'License'). You may not use this file except in
9 * compliance with the License. The rights granted to you under the License
10 * may not be used to create, or enable the creation or redistribution of,
11 * unlawful or unlicensed copies of an Apple operating system, or to
12 * circumvent, violate, or enable the circumvention or violation of, any
13 * terms of an Apple operating system software license agreement.
14 *
15 * Please obtain a copy of the License at
16 * http://www.opensource.apple.com/apsl/ and read it before using this file.
17 *
18 * The Original Code and all software distributed under the License are
19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23 * Please see the License for the specific language governing rights and
24 * limitations under the License.
25 *
26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27 */
28/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
29/*
30 * Copyright (c) 1982, 1986, 1991, 1993
31 * The Regents of the University of California. All rights reserved.
32 *
33 * Redistribution and use in source and binary forms, with or without
34 * modification, are permitted provided that the following conditions
35 * are met:
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
38 * 2. Redistributions in binary form must reproduce the above copyright
39 * notice, this list of conditions and the following disclaimer in the
40 * documentation and/or other materials provided with the distribution.
41 * 3. All advertising materials mentioning features or use of this software
42 * must display the following acknowledgement:
43 * This product includes software developed by the University of
44 * California, Berkeley and its contributors.
45 * 4. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 *
61 * @(#)subr_xxx.c 8.1 (Berkeley) 6/10/93
62 */
63
64#include <sys/param.h>
65#include <sys/systm.h>
66#include <sys/kernel.h>
67#include <sys/conf.h>
68#include <sys/proc_internal.h>
69#include <sys/vnode.h>
70#include <sys/uio.h>
71#include <sys/sysproto.h>
72
73#include <sys/signalvar.h> /* for psignal() */
74#include <kern/debug.h>
75
76#ifdef GPROF
77#include <sys/gmon.h>
78#endif
79
80#if DEVELOPMENT || DEBUG
81bool send_sigsys = true;
82#else
83#define send_sigsys true
84#endif
85
86/*
87 * Unsupported device function (e.g. writing to read-only device).
88 */
89int
90enodev(void)
91{
92 return (ENODEV);
93}
94
95/*
96 * Unsupported strategy function.
97 */
98void
99enodev_strat(void)
100{
101 return;
102}
103
104/*
105 * Unconfigured device function; driver not configured.
106 */
107int
108enxio(void)
109{
110 return (ENXIO);
111}
112
113/*
114 * Unsupported ioctl function.
115 */
116int
117enoioctl(void)
118{
119 return (ENOTTY);
120}
121
122
123/*
124 * Unsupported system function.
125 * This is used for an otherwise-reasonable operation
126 * that is not supported by the current system binary.
127 */
128int
129enosys(void)
130{
131 return (ENOSYS);
132}
133
134/*
135 * Return error for operation not supported
136 * on a specific object or file type.
137 *
138 * XXX Name of this routine is wrong.
139 */
140int
141eopnotsupp(void)
142{
143 return (ENOTSUP);
144}
145
146/*
147 * Generic null operation, always returns success.
148 */
149int
150nullop(void)
151{
152 return (0);
153}
154
155
156/*
157 * Null routine; placed in insignificant entries
158 * in the bdevsw and cdevsw tables.
159 */
160int
161nulldev(void)
162{
163 return (0);
164}
165
166/*
167 * Null system calls. Not invalid, just not configured.
168 */
169int
170errsys(void)
171{
172 return(EINVAL);
173}
174
175void
176nullsys(void)
177{
178}
179
180/*
181 * nonexistent system call-- signal process (may want to handle it)
182 * flag error if process won't see signal immediately
183 * Q: should we do that all the time ??
184 */
185/* ARGSUSED */
186int
187nosys(__unused struct proc *p, __unused struct nosys_args *args, __unused int32_t *retval)
188{
189 if (send_sigsys) {
190 psignal_uthread(current_thread(), SIGSYS);
191 }
192 return (ENOSYS);
193}
194
195#ifdef GPROF
196/*
197 * Stub routine in case it is ever possible to free space.
198 */
199void
200cfreemem(caddr_t cp, int size)
201{
202 printf("freeing %p, size %d\n", cp, size);
203}
204#endif
205
206#if !CRYPTO
207#include <crypto/rc4/rc4.h>
208
209/* Stubs must be present in all configs for Unsupported KPI exports */
210
211void
212rc4_init(struct rc4_state *state __unused, const u_char *key __unused, int keylen __unused)
213{
214 panic("rc4_init: unsupported kernel configuration");
215}
216
217void
218rc4_crypt(struct rc4_state *state __unused,
219 const u_char *inbuf __unused, u_char *outbuf __unused, int buflen __unused)
220{
221 panic("rc4_crypt: unsupported kernel configuration");
222}
223#endif /* !CRYPTO */
224
225