1/* Check for large timeout with mq_timedsend and mq_timedreceive.
2 Copyright (C) 2021-2024 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19#include <errno.h>
20#include <intprops.h>
21#include <mqueue.h>
22#include <stdio.h>
23#include <support/check.h>
24#include <support/support.h>
25#include <support/temp_file.h>
26#include <unistd.h>
27
28static char name[sizeof "/tst-mqueue10-" + INT_BUFSIZE_BOUND (pid_t)];
29
30static void
31do_cleanup (void)
32{
33 mq_unlink (name: name);
34}
35#define CLEANUP_HANDLER do_cleanup
36
37static int
38do_test (void)
39{
40 snprintf (s: name, maxlen: sizeof (name), format: "/tst-mqueue10-%u", getpid ());
41
42 char msg[8] = { 0x55 };
43
44 struct mq_attr attr = { .mq_maxmsg = 1, .mq_msgsize = sizeof (msg) };
45 mqd_t q = mq_open (name: name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
46
47 if (q == (mqd_t) -1)
48 {
49 if (errno == ENOSYS)
50 FAIL_UNSUPPORTED ("mq_open not supported");
51
52 printf (format: "mq_open failed with: %m\n");
53 return 1;
54 }
55
56 struct timespec ts = { TYPE_MAXIMUM (time_t), 0 };
57
58 {
59 timer_t timer = support_create_timer (sec: 0, nsec: 100000000, false, NULL);
60 TEST_COMPARE (mq_timedreceive (q, msg, sizeof (msg), NULL, &ts), -1);
61 TEST_VERIFY (errno == EINTR || errno == EOVERFLOW);
62 support_delete_timer (timer);
63 }
64
65 {
66 timer_t timer = support_create_timer (sec: 0, nsec: 100000000, false, NULL);
67 /* Fill the internal buffer first. */
68 TEST_COMPARE (mq_timedsend (q, msg, sizeof (msg), 0,
69 &(struct timespec) { 0, 0 }), 0);
70 TEST_COMPARE (mq_timedsend (q, msg, sizeof (msg), 0, &ts), -1);
71 TEST_VERIFY (errno == EINTR || errno == EOVERFLOW);
72 support_delete_timer (timer);
73 }
74
75 mq_unlink (name: name);
76
77 return 0;
78}
79
80#include <support/test-driver.c>
81

source code of glibc/rt/tst-mqueue10.c