lib/libc/compat/sys/compat___semctl13.c

   1 /*      $NetBSD: compat___semctl13.c,v 1.1.2.1 2008/11/10 00:13:02 christos Exp $       */
   2
   3 /*      $NetBSD: compat___semctl13.c,v 1.1.2.1 2008/11/10 00:13:02 christos Exp $ */
   4
   5 /*-
   6  * Copyright (c) 2008 The NetBSD Foundation, Inc.
   7  * All rights reserved.
   8  *
   9  * This code is derived from software contributed to The NetBSD Foundation
  10  * by Christos Zoulas.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3. All advertising materials mentioning features or use of this software
  21  *    must display the following acknowledgement:
  22  *        This product includes software developed by the NetBSD
  23  *        Foundation, Inc. and its contributors.
  24  * 4. Neither the name of The NetBSD Foundation nor the names of its
  25  *    contributors may be used to endorse or promote products derived
  26  *    from this software without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  29  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  30  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  31  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  32  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  33  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  34  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  35  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  36  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  37  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  38  * POSSIBILITY OF SUCH DAMAGE.
  39  */
  40 #include <sys/cdefs.h>
  41 #if defined(LIBC_SCCS) && !defined(lint)
  42 __RCSID("$NetBSD: compat___semctl13.c,v 1.1.2.1 2008/11/10 00:13:02 christos Exp $");
  43 #endif /* LIBC_SCCS and not lint */
  44
  45 #include "namespace.h"
  46 #define __LIBC12_SOURCE__
  47 #include <stdarg.h>
  48 #include <sys/time.h>
  49 #include <compat/sys/time.h>
  50 #include <sys/sem.h>
  51 #include <compat/sys/sem.h>
  52
  53 __warn_references(__semctl13,
  54     "warning: reference to compatibility __semctl13(); include <sys/sem.h> to generate correct reference")
  55
  56 /*
  57  * Copy timeout to local variable and call the syscall.
  58  */
  59 int
  60 __semctl13(int semid, int semnum, int cmd, ...)
  61 {
  62         va_list ap;
  63         union __semun semun;
  64         struct semid_ds13 *ds13;
  65         struct semid_ds ds;
  66         int error;
  67
  68         va_start(ap, cmd);
  69         switch (cmd) {
  70         case IPC_SET:
  71         case IPC_STAT:
  72         case GETALL:
  73         case SETVAL:
  74         case SETALL:
  75 #ifdef __lint__
  76                 memcpy(&semun, &ap, sizeof(semun));
  77 #else
  78                 semun = va_arg(ap, union __semun);
  79 #endif
  80         }
  81         va_end(ap);
  82
  83         ds13 = (struct semid_ds13 *)(void *)semun.buf;
  84         semun.buf = &ds;
  85
  86         if (cmd == IPC_SET)
  87                 __semid_ds13_to_native(ds13, &ds);
  88
  89         error = ____semctl50(semid, semnum, cmd, &semun);
  90         if (error)
  91                 return error;
  92
  93         if (cmd == IPC_STAT)
  94                 __native_to_semid_ds13(&ds, ds13);
  95
  96         semun.buf = (struct semid_ds *)(void *)ds13;
  97         return 0;
  98 }