mqtest1.c revision 282858 
1/* $FreeBSD: stable/10/tests/sys/mqueue/mqtest1.c 282858 2015-05-13 12:09:01Z ngie $ */
2
3#include <err.h>
4#include <errno.h>
5#include <fcntl.h>
6#include <mqueue.h>
7#include <signal.h>
8#include <stdio.h>
9
10#include "freebsd_test_suite/macros.h"
11
12#define MQNAME	"/mytstqueue1"
13
14int
15main(void)
16{
17	struct mq_attr attr, attr2;
18	struct sigevent sigev;
19	mqd_t mq;
20	int status;
21
22	PLAIN_REQUIRE_KERNEL_MODULE("mqueuefs", 0);
23
24	attr.mq_maxmsg  = 2;
25	attr.mq_msgsize = 100;
26	mq = mq_open(MQNAME, O_CREAT | O_RDWR | O_EXCL, 0666, &attr);
27	if (mq == (mqd_t)-1)
28		err(1, "mq_open");
29	status = mq_unlink(MQNAME);
30	if (status)
31		err(1, "mq_unlink");
32	status = mq_getattr(mq, &attr2);
33	if (status)
34		err(1, "mq_getattr");
35	if (attr.mq_maxmsg != attr2.mq_maxmsg)
36		err(1, "mq_maxmsg changed");
37	if (attr.mq_msgsize != attr2.mq_msgsize)
38		err(1, "mq_msgsize changed");
39
40	sigev.sigev_notify = SIGEV_SIGNAL;
41	sigev.sigev_signo = SIGRTMIN;
42	status = mq_notify(mq, &sigev);
43	if (status)
44		err(1, "mq_notify");
45	status = mq_notify(mq, &sigev);
46	if (status == 0)
47		err(1, "mq_notify 2");
48	else if (errno != EBUSY)
49		err(1, "mq_notify 3");
50	status = mq_notify(mq, NULL);
51	if (status)
52		err(1, "mq_notify 4");
53	status = mq_close(mq);
54	if (status)
55		err(1, "mq_close");
56	return (0);
57}
58