1/* Copyright (C) 2004-2017 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 <http://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#ifdef __NR_mq_open
26
27/* Establish connection between a process and a message queue NAME and
28 return message queue descriptor or (mqd_t) -1 on error. OFLAG determines
29 the type of access used. If O_CREAT is on OFLAG, the third argument is
30 taken as a `mode_t', the mode of the created message queue, and the fourth
31 argument is taken as `struct mq_attr *', pointer to message queue
32 attributes. If the fourth argument is NULL, default attributes are
33 used. */
34mqd_t
35__mq_open (const char *name, int oflag, ...)
36{
37 if (name[0] != '/')
38 return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
39
40 mode_t mode = 0;
41 struct mq_attr *attr = NULL;
42 if (oflag & O_CREAT)
43 {
44 va_list ap;
45
46 va_start (ap, oflag);
47 mode = va_arg (ap, mode_t);
48 attr = va_arg (ap, struct mq_attr *);
49 va_end (ap);
50 }
51
52 return INLINE_SYSCALL (mq_open, 4, name + 1, oflag, mode, attr);
53}
54strong_alias (__mq_open, mq_open);
55
56mqd_t
57__mq_open_2 (const char *name, int oflag)
58{
59 if (oflag & O_CREAT)
60 __fortify_fail ("invalid mq_open call: O_CREAT without mode and attr");
61
62 return __mq_open (name, oflag);
63}
64#else
65# include <rt/mq_open.c>
66#endif
67