1/* Copyright (C) 2004-2022 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#include <bits/types.h>
23
24typedef int mqd_t;
25
26struct mq_attr
27{
28 __syscall_slong_t mq_flags; /* Message queue flags. */
29 __syscall_slong_t mq_maxmsg; /* Maximum number of messages. */
30 __syscall_slong_t mq_msgsize; /* Maximum message size. */
31 __syscall_slong_t mq_curmsgs; /* Number of messages currently queued. */
32 __syscall_slong_t __pad[4];
33};
34

source code of include/x86_64-linux-gnu/bits/mqueue.h