/* * Copyright (c) 1994, 1995 Christopher G. Demetriou * 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 Christopher G. Demetriou * for the NetBSD Project. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ #if defined(SYSLIBC_SCCS) && !defined(lint) static char rcsid[] = "$OpenBSD: semctl.c,v 1.5 1998/06/10 08:46:22 deraadt Exp $"; #endif /* SYSLIBC_SCCS and not lint */ #include #include #include #if __STDC__ #include #else #include #endif #include #if __STDC__ int semctl(int semid, int semnum, int cmd, ...) #else int semctl(semid, semnum, cmd, va_alist) int semid, semnum; int cmd; va_dcl #endif { va_list ap; union semun semun; union semun *semun_ptr = NULL; #if __STDC__ va_start(ap, cmd); #else va_start(ap); #endif if (cmd == IPC_SET || cmd == IPC_STAT || cmd == GETALL || cmd == SETVAL || cmd == SETALL) { semun = va_arg(ap, union semun); semun_ptr = &semun; } va_end(ap); return (__semctl(semid, semnum, cmd, semun_ptr)); }