1
2 #include <sys/types.h>
3 #include <sys/select.h>
4 #include <sys/wait.h>
5 #include <err.h>
6 #include <fcntl.h>
7 #include <mqueue.h>
8 #include <signal.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <unistd.h>
12
13 #include "freebsd_test_suite/macros.h"
14
15 #define MQNAME "/mytstqueue3"
16 #define LOOPS 1000
17 #define PRIO 10
18
19 static void
sighandler(int sig __unused)20 sighandler(int sig __unused)
21 {
22 write(1, "timeout\n", 8);
23 _exit(1);
24 }
25
26 int
main(void)27 main(void)
28 {
29 fd_set set;
30 struct mq_attr attr;
31 int status;
32 mqd_t mq;
33 pid_t pid;
34
35 PLAIN_REQUIRE_KERNEL_MODULE("mqueuefs", 0);
36
37 mq_unlink(MQNAME);
38
39 attr.mq_maxmsg = 5;
40 attr.mq_msgsize = 128;
41 mq = mq_open(MQNAME, O_CREAT | O_RDWR | O_EXCL, 0666, &attr);
42 if (mq == (mqd_t)-1)
43 err(1, "mq_open()");
44 status = mq_getattr(mq, &attr);
45 if (status)
46 err(1, "mq_getattr()");
47
48 pid = fork();
49 if (pid == 0) { /* child */
50 char *buf;
51 int j, i;
52 unsigned int prio;
53
54 mq_close(mq);
55
56 signal(SIGALRM, sighandler);
57
58 mq = mq_open(MQNAME, O_RDWR);
59 if (mq == (mqd_t)-1)
60 err(1, "child process: mq_open");
61 buf = malloc(attr.mq_msgsize);
62 for (j = 0; j < LOOPS; ++j) {
63 FD_ZERO(&set);
64 FD_SET(mq_getfd_np(mq), &set);
65 alarm(3);
66 status = select(mq_getfd_np(mq) + 1, &set, NULL,
67 NULL, NULL);
68 if (status != 1)
69 err(1, "child process: select()");
70 status = mq_receive(mq, buf, attr.mq_msgsize, &prio);
71 if (status == -1)
72 err(2, "child process: mq_receive");
73 for (i = 0; i < attr.mq_msgsize; ++i)
74 if (buf[i] != i)
75 err(3, "message data corrupted");
76 if (prio != PRIO)
77 err(4, "priority is incorrect: %d", prio);
78 }
79 alarm(0);
80 free(buf);
81 mq_close(mq);
82 return (0);
83 } else if (pid == -1) {
84 err(1, "fork()");
85 } else {
86 char *buf;
87 int i, j;
88
89 signal(SIGALRM, sighandler);
90 buf = malloc(attr.mq_msgsize);
91 for (j = 0; j < LOOPS; ++j) {
92 for (i = 0; i < attr.mq_msgsize; ++i) {
93 buf[i] = i;
94 }
95 alarm(3);
96 FD_ZERO(&set);
97 FD_SET(mq_getfd_np(mq), &set);
98 status = select(mq_getfd_np(mq) + 1, NULL, &set,
99 NULL, NULL);
100 if (status != 1)
101 err(1, "select()");
102 status = mq_send(mq, buf, attr.mq_msgsize, PRIO);
103 if (status) {
104 kill(pid, SIGKILL);
105 err(2, "mq_send()");
106 }
107 }
108 alarm(3);
109 wait(&status);
110 alarm(0);
111 }
112 status = mq_close(mq);
113 if (status)
114 err(1, "mq_close");
115 mq_unlink(MQNAME);
116 return (0);
117 }
118