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. */ |
34 | mqd_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 | } |
54 | strong_alias (__mq_open, mq_open); |
55 | |
56 | mqd_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 | |