1 /* Copyright (C) 2004-2021 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 #include <shlib-compat.h>
25
26 /* Establish connection between a process and a message queue NAME and
27 return message queue descriptor or (mqd_t) -1 on error. OFLAG determines
28 the type of access used. If O_CREAT is on OFLAG, the third argument is
29 taken as a `mode_t', the mode of the created message queue, and the fourth
30 argument is taken as `struct mq_attr *', pointer to message queue
31 attributes. If the fourth argument is NULL, default attributes are
32 used. */
33 mqd_t
__mq_open(const char * name,int oflag,...)34 __mq_open (const char *name, int oflag, ...)
35 {
36 if (name[0] != '/')
37 return INLINE_SYSCALL_ERROR_RETURN_VALUE (EINVAL);
38
39 mode_t mode = 0;
40 struct mq_attr *attr = NULL;
41 if (oflag & O_CREAT)
42 {
43 va_list ap;
44
45 va_start (ap, oflag);
46 mode = va_arg (ap, mode_t);
47 attr = va_arg (ap, struct mq_attr *);
48 va_end (ap);
49 }
50
51 return INLINE_SYSCALL (mq_open, 4, name + 1, oflag, mode, attr);
52 }
53 versioned_symbol (libc, __mq_open, mq_open, GLIBC_2_34);
54 #if OTHER_SHLIB_COMPAT (librt, GLIBC_2_3_4, GLIBC_2_34)
55 compat_symbol (libc, __mq_open, mq_open, GLIBC_2_3_4);
56 #endif
57
58 mqd_t
___mq_open_2(const char * name,int oflag)59 ___mq_open_2 (const char *name, int oflag)
60 {
61 if (oflag & O_CREAT)
62 __fortify_fail ("invalid mq_open call: O_CREAT without mode and attr");
63
64 return __mq_open (name, oflag);
65 }
66 versioned_symbol (libc, ___mq_open_2, __mq_open_2, GLIBC_2_34);
67 #if OTHER_SHLIB_COMPAT (librt, GLIBC_2_7, GLIBC_2_34)
68 compat_symbol (libc, ___mq_open_2, __mq_open_2, GLIBC_2_7);
69 #endif
70