95 lines
3 KiB
C
95 lines
3 KiB
C
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/* $NetBSD: compat_semctl.c,v 1.2 2009/01/11 02:46:26 christos Exp $ */
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/*
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* Copyright (c) 1994, 1995 Christopher G. Demetriou
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the
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* NetBSD Project. See http://www.NetBSD.org/ for
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* information about NetBSD.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* <<Id: LICENSE,v 1.2 2000/06/14 15:57:33 cgd Exp>>
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: compat_semctl.c,v 1.2 2009/01/11 02:46:26 christos Exp $");
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#endif /* LIBC_SCCS and not lint */
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#define __LIBC12_SOURCE__
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/sem.h>
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#include <sys/null.h>
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#include <compat/sys/sem.h>
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#include <stdarg.h>
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int
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semctl(int semid, int semnum, int cmd, ...)
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{
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va_list ap;
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union __semun semun;
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struct semid_ds ds;
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struct semid_ds14 *ds14 = NULL;
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int error;
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va_start(ap, cmd);
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switch (cmd) {
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case IPC_SET:
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case IPC_STAT:
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case GETALL:
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case SETVAL:
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case SETALL:
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#ifdef __lint__
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memcpy(&semun, &ap, sizeof(semun));
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#else
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semun = va_arg(ap, union __semun);
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#endif
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}
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va_end(ap);
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switch (cmd) {
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case IPC_SET:
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case IPC_STAT:
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ds14 = (struct semid_ds14 *)(void *)semun.buf;
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if (cmd == IPC_SET)
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__semid_ds14_to_native(ds14, &ds);
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semun.buf = &ds;
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break;
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}
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error = __semctl50(semid, semnum, cmd, &semun);
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switch (cmd) {
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case IPC_SET:
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case IPC_STAT:
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semun.buf = (struct semid_ds *)(void *)ds14;
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if (cmd == IPC_STAT && error == 0)
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__native_to_semid_ds14(&ds, ds14);
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break;
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}
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return error;
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}
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