sysdeps/unix/sysv/linux/msgget.c

   1 /* Copyright (C) 1995-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, August 1995.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <sys/msg.h>
  20 #include <ipc_priv.h>
  21 #include <sysdep.h>
  22 #include <errno.h>
  23
  24 /* Return descriptor for message queue associated with KEY.  The MSGFLG
  25    parameter describes how to proceed with clashing of key values.  */
  26
  27 int
  28 msgget (key_t key, int msgflg)
  29 {
  30 #ifdef __ASSUME_DIRECT_SYSVIPC_SYSCALLS
  31   return INLINE_SYSCALL_CALL (msgget, key, msgflg);
  32 #else
  33   return INLINE_SYSCALL_CALL (ipc, IPCOP_msgget, key, msgflg, 0, NULL);
  34 #endif
  35 }