sysdeps/unix/sysv/linux/mips/mips64/semctl.c

   1 /* Copyright (C) 2007-2014 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library.  If not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <stdarg.h>
  20 #include <sys/sem.h>
  21 #include <ipc_priv.h>
  22 #include <sysdep.h>
  23
  24 /* Define a `union semun' suitable for Linux here.  */
  25 union semun
  26 {
  27   int val;                      /* value for SETVAL */
  28   struct semid_ds *buf;         /* buffer for IPC_STAT & IPC_SET */
  29   unsigned short int *array;    /* array for GETALL & SETALL */
  30   struct seminfo *__buf;        /* buffer for IPC_INFO */
  31 };
  32
  33 int __semctl (int semid, int semnum, int cmd, ...);
  34
  35 int
  36 __semctl (int semid, int semnum, int cmd, ...)
  37 {
  38   union semun arg;
  39   va_list ap;
  40
  41   va_start (ap, cmd);
  42
  43   /* Get the argument.  */
  44   arg = va_arg (ap, union semun);
  45
  46   va_end (ap);
  47
  48   return INLINE_SYSCALL (semctl, 4, semid, semnum, cmd | __IPC_64,
  49                          arg.array);
  50 }
  51
  52 #include <shlib-compat.h>
  53 versioned_symbol (libc, __semctl, semctl, GLIBC_2_0);