lib/libc/compat/sys/compat___semctl13.c

   1 /*      $NetBSD: compat___semctl13.c,v 1.6 2015/01/29 20:44:38 joerg Exp $ */
   2
   3 /*-
   4  * Copyright (c) 2008 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 #include <sys/cdefs.h>
  39 #if defined(LIBC_SCCS) && !defined(lint)
  40 __RCSID("$NetBSD: compat___semctl13.c,v 1.6 2015/01/29 20:44:38 joerg Exp $");
  41 #endif /* LIBC_SCCS and not lint */
  42
  43 #include "namespace.h"
  44 #define __LIBC12_SOURCE__
  45 #include <stdarg.h>
  46 #include <sys/time.h>
  47 #include <compat/sys/time.h>
  48 #include <sys/sem.h>
  49 #include <compat/sys/sem.h>
  50 #ifdef __lint__
  51 #include <string.h>
  52 #endif
  53
  54 __warn_references(__semctl13,
  55     "warning: reference to compatibility __semctl13(); include <sys/sem.h> to generate correct reference")
  56
  57 /*
  58  * Copy timeout to local variable and call the syscall.
  59  */
  60 int
  61 __semctl13(int semid, int semnum, int cmd, ...)
  62 {
  63         va_list ap;
  64         union __semun semun;
  65         struct semid_ds13 *ds13;
  66         struct semid_ds ds;
  67         int error;
  68
  69         va_start(ap, cmd);
  70         switch (cmd) {
  71         case IPC_SET:
  72         case IPC_STAT:
  73         case GETALL:
  74         case SETVAL:
  75         case SETALL:
  76 #ifdef __lint__
  77                 memcpy(&semun, &ap, sizeof(semun));
  78 #else
  79                 semun = va_arg(ap, union __semun);
  80 #endif
  81                 break;
  82         default:
  83                 break;
  84         }
  85         va_end(ap);
  86
  87         switch (cmd) {
  88         case IPC_SET:
  89         case IPC_STAT:
  90                 ds13 = (void *)semun.buf;
  91                 semun.buf = &ds;
  92                 if (cmd == IPC_SET)
  93                         __semid_ds13_to_native(ds13, &ds);
  94                 break;
  95         default:
  96                 ds13 = NULL;
  97                 break;
  98         }
  99
 100
 101         error = ____semctl50(semid, semnum, cmd, &semun);
 102         if (error)
 103                 return error;
 104
 105         if (cmd == IPC_STAT)
 106                 __native_to_semid_ds13(&ds, ds13);
 107         return 0;
 108 }