1 /* $NetBSD: compat_semctl.c,v 1.6 2015/01/29 20:44:38 joerg Exp $ */
2
3 /*
4 * Copyright (c) 1994, 1995 Christopher G. Demetriou
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed for the
18 * NetBSD Project. See http://www.NetBSD.org/ for
19 * information about NetBSD.
20 * 4. The name of the author may not be used to endorse or promote products
21 * derived from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 *
34 * <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
35 */
36
37 #include <sys/cdefs.h>
38 #if defined(LIBC_SCCS) && !defined(lint)
39 __RCSID("$NetBSD: compat_semctl.c,v 1.6 2015/01/29 20:44:38 joerg Exp $");
40 #endif /* LIBC_SCCS and not lint */
41
42 #define __LIBC12_SOURCE__
43 #include <sys/types.h>
44 #include <sys/ipc.h>
45 #include <sys/sem.h>
46 #include <sys/null.h>
47 #include <compat/sys/sem.h>
48 #include <stdarg.h>
49 #ifdef __lint__
50 #include <string.h>
51 #endif
52
53 int
semctl(int semid,int semnum,int cmd,...)54 semctl(int semid, int semnum, int cmd, ...)
55 {
56 va_list ap;
57 union __semun semun;
58 struct semid_ds ds;
59 struct semid_ds14 *ds14;
60 int error;
61
62 va_start(ap, cmd);
63 switch (cmd) {
64 case IPC_SET:
65 case IPC_STAT:
66 case GETALL:
67 case SETVAL:
68 case SETALL:
69 #ifdef __lint__
70 memcpy(&semun, &ap, sizeof(semun));
71 #else
72 semun = va_arg(ap, union __semun);
73 #endif
74 break;
75 default:
76 break;
77 }
78 va_end(ap);
79
80 switch (cmd) {
81 case IPC_SET:
82 case IPC_STAT:
83 ds14 = (void *)semun.buf;
84 if (cmd == IPC_SET)
85 __semid_ds14_to_native(ds14, &ds);
86 semun.buf = &ds;
87 break;
88 default:
89 ds14 = NULL;
90 break;
91 }
92
93 error = __semctl50(semid, semnum, cmd, &semun);
94 if (error)
95 return error;
96
97 if (cmd == IPC_STAT)
98 __native_to_semid_ds14(&ds, ds14);
99 return 0;
100 }
101