FreeBSD/Linux Kernel Cross Reference
sys/dev/mm.c
1 /* $NetBSD: mm.c,v 1.6 2003/12/20 16:22:14 jdolecek Exp $ */
2
3 /*-
4 * Copyright (c) 2002 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Christos Zoulas.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
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 NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39
40 #include <sys/cdefs.h>
41 __KERNEL_RCSID(0, "$NetBSD: mm.c,v 1.6 2003/12/20 16:22:14 jdolecek Exp $");
42
43 /*
44 * Memory special file
45 */
46
47 #include <sys/param.h>
48 #include <sys/conf.h>
49 #include <sys/buf.h>
50 #include <sys/systm.h>
51 #include <sys/uio.h>
52 #include <sys/malloc.h>
53 #include <sys/ioctl.h>
54 #include <sys/proc.h>
55
56 dev_type_ioctl(mmioctl);
57
58 int
59 mmioctl(dev, cmd, data, flag, p)
60 dev_t dev;
61 u_long cmd;
62 caddr_t data;
63 int flag;
64 struct proc *p;
65 {
66 switch (minor(dev)) {
67 default:
68 switch (cmd) {
69 case FIONBIO: /* We never block anyway */
70 return 0;
71 case FIOSETOWN:
72 case FIOGETOWN:
73 case TIOCGPGRP:
74 case TIOCSPGRP:
75 return ENOTTY;
76 case FIOASYNC:
77 if ((*(int *)data) == 0)
78 return 0;
79 /*FALLTHROUGH*/
80 }
81 return EOPNOTSUPP;
82 }
83 }
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