1/* Copyright (C) 2004-2020 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#include <errno.h>
19#include <mqueue.h>
20#include <stdarg.h>
21#include <stddef.h>
22#include <stdio.h>
23#include <sysdep.h>
24
25/* Establish connection between a process and a message queue NAME and
26 return message queue descriptor or (mqd_t) -1 on error. OFLAG determines
27 the type of access used. If O_CREAT is on OFLAG, the third argument is
28 taken as a `mode_t', the mode of the created message queue, and the fourth
29 argument is taken as `struct mq_attr *', pointer to message queue
30 attributes. If the fourth argument is NULL, default attributes are
31 used. */
32mqd_t
33__mq_open (const char *name, int oflag, ...)
34{
35 if (name[0] != '/')
36 return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
37
38 mode_t mode = 0;
39 struct mq_attr *attr = NULL;
40 if (oflag & O_CREAT)
41 {
42 va_list ap;
43
44 va_start (ap, oflag);
45 mode = va_arg (ap, mode_t);
46 attr = va_arg (ap, struct mq_attr *);
47 va_end (ap);
48 }
49
50 return INLINE_SYSCALL (mq_open, 4, name + 1, oflag, mode, attr);
51}
52strong_alias (__mq_open, mq_open);
53
54mqd_t
55__mq_open_2 (const char *name, int oflag)
56{
57 if (oflag & O_CREAT)
58 __fortify_fail ("invalid mq_open call: O_CREAT without mode and attr");
59
60 return __mq_open (name, oflag);
61}
62