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 20 sighandler(int sig __unused) 21 { 22 write(1, "timeout\n", 8); 23 _exit(1); 24 } 25 26 int 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