text: /* Checking macros for mq functions.
     Copyright (C) 2007-2015 Free Software Foundation, Inc.
     This file is part of the GNU C Library.
  
     The GNU C Library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.
  
     The GNU C Library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
     License along with the GNU C Library; if not, see
     <http://www.gnu.org/licenses/>.  */
  
  #ifndef	_FCNTL_H
  # error "Never include <bits/mqueue2.h> directly; use <mqueue.h> instead."
  #endif
  
  /* Check that calls to mq_open with O_CREAT set have an appropriate third and fourth
     parameter.  */
  extern mqd_t mq_open (const char *__name, int __oflag, ...)
       __THROW __nonnull ((1));
  extern mqd_t __mq_open_2 (const char *__name, int __oflag)
       __THROW __nonnull ((1));
  extern mqd_t __REDIRECT_NTH (__mq_open_alias, (const char *__name,
  					       int __oflag, ...), mq_open)
       __nonnull ((1));
  __errordecl (__mq_open_wrong_number_of_args,
  	     "mq_open can be called either with 2 or 4 arguments");
  __errordecl (__mq_open_missing_mode_and_attr,
  	     "mq_open with O_CREAT in second argument needs 4 arguments");
  
  __fortify_function mqd_t
  __NTH (mq_open (const char *__name, int __oflag, ...))
  {
    if (__va_arg_pack_len () != 0 && __va_arg_pack_len () != 2)
      __mq_open_wrong_number_of_args ();
  
    if (__builtin_constant_p (__oflag))
      {
        if ((__oflag & O_CREAT) != 0 && __va_arg_pack_len () == 0)
  	{
  	  __mq_open_missing_mode_and_attr ();
  	  return __mq_open_2 (__name, __oflag);
  	}
        return __mq_open_alias (__name, __oflag, __va_arg_pack ());
      }
  
    if (__va_arg_pack_len () == 0)
      return __mq_open_2 (__name, __oflag);
  
    return __mq_open_alias (__name, __oflag, __va_arg_pack ());
  }
  