1  /* Copyright (C) 2004-2023 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     <https://www.gnu.org/licenses/>.  */
      17  
      18  #ifndef _MQUEUE_H
      19  # error "Never use <bits/mqueue.h> directly; include <mqueue.h> instead."
      20  #endif
      21  
      22  typedef int mqd_t;
      23  
      24  struct mq_attr
      25  {
      26    long int mq_flags;	/* Message queue flags.  */
      27    long int mq_maxmsg;	/* Maximum number of messages.  */
      28    long int mq_msgsize;	/* Maximum message size.  */
      29    long int mq_curmsgs;	/* Number of messages currently queued.  */
      30  };