1 /* 2 * Copyright (c) 2003, Intel Corporation. All rights reserved. 3 * Created by: julie.n.fleischer REMOVE-THIS AT intel DOT com 4 * This file is licensed under the GPL license. For the full content 5 * of this license, see the COPYING file at the top level of this 6 * source tree. 7 */ 8 9 /* 10 * Test that if the access mode is O_RDONLY, the message queue can 11 * receive messages but not send. 12 * 13 * Test for a message queue opened twice in two different processes. 14 * 15 * 3/13/03 - Added fix from Gregoire Pichon for specifying an attr 16 * with a mq_maxmsg >= BUFFER. 17 */ 18 19 #include <sys/stat.h> 20 #include <sys/types.h> 21 #include <sys/wait.h> 22 #include <fcntl.h> 23 #include <mqueue.h> 24 #include <signal.h> 25 #include <stdio.h> 26 #include <string.h> 27 #include <unistd.h> 28 #include "posixtest.h" 29 30 #define NAMESIZE 50 31 #define MSGSTR "0123456789" 32 #define BUFFER 40 33 34 #define CHILDPASS 1 35 #define CHILDFAIL 0 36 37 void handler(int signo) 38 { 39 (void) signo; 40 return; 41 } 42 43 int main(void) 44 { 45 char qname[NAMESIZE]; 46 const char *msgptr = MSGSTR; 47 int pid; 48 49 sprintf(qname, "/mq_open_7-2_%d", getpid()); 50 51 pid = fork(); 52 if (pid == 0) { 53 mqd_t roqueue; 54 char msgrcd[BUFFER]; 55 sigset_t mask; 56 struct mq_attr attr; 57 struct sigaction act; 58 int sig; 59 unsigned pri; 60 61 /* child here */ 62 63 /* Set up handler for SIGUSR1 */ 64 act.sa_handler = handler; 65 act.sa_flags = 0; 66 sigaction(SIGUSR1, &act, NULL); 67 68 /* wait for parent to finish mq_send */ 69 sigemptyset(&mask); 70 sigaddset(&mask, SIGUSR1); 71 sigprocmask(SIG_BLOCK, &mask, NULL); 72 sigwait(&mask, &sig); 73 74 /* once parent has finished sending, open read-only queue */ 75 attr.mq_msgsize = BUFFER; 76 attr.mq_maxmsg = BUFFER; 77 roqueue = mq_open(qname, O_RDONLY, S_IRUSR | S_IWUSR, &attr); 78 if (roqueue == (mqd_t) - 1) { 79 perror("mq_open() read only failed"); 80 return CHILDFAIL; 81 } 82 #ifdef DEBUG 83 printf("Readonly message queue opened in child\n"); 84 #endif 85 86 if (mq_receive(roqueue, msgrcd, BUFFER, &pri) == -1) { 87 perror("mq_receive() on a read only queue failed"); 88 mq_close(roqueue); 89 return CHILDFAIL; 90 } 91 #ifdef DEBUG 92 printf("Received message %s\n", msgrcd); 93 #endif 94 95 if (mq_send(roqueue, msgptr, strlen(msgptr) + 1, 1) == 0) { 96 printf("mq_send() on a read only queue succeeded\n"); 97 mq_close(roqueue); 98 return CHILDFAIL; 99 } 100 #ifdef DEBUG 101 printf("Sending message failed in child, as expected\n"); 102 #endif 103 mq_close(roqueue); 104 105 return CHILDPASS; 106 } else { 107 /* parent here */ 108 mqd_t rdwrqueue; 109 struct mq_attr attr; 110 int i; 111 112 attr.mq_msgsize = BUFFER; 113 attr.mq_maxmsg = BUFFER; 114 rdwrqueue = mq_open(qname, O_CREAT | O_RDWR, 115 S_IRUSR | S_IWUSR, &attr); 116 if (rdwrqueue == (mqd_t) - 1) { 117 perror("mq_open() did not return success"); 118 printf("Test UNRESOLVED\n"); 119 /* kill child and exit */ 120 kill(pid, SIGABRT); 121 return PTS_UNRESOLVED; 122 } 123 #ifdef DEBUG 124 printf("Message queue opened in parent\n"); 125 #endif 126 127 if (mq_send(rdwrqueue, msgptr, strlen(msgptr) + 1, 1) != 0) { 128 perror("mq_send() did not return success"); 129 printf("Test UNRESOLVED\n"); 130 /* close queue, kill child and exit */ 131 mq_close(rdwrqueue); 132 mq_unlink(qname); 133 kill(pid, SIGABRT); 134 return PTS_UNRESOLVED; 135 } 136 #ifdef DEBUG 137 printf("Message %s sent\n", msgptr); 138 #endif 139 140 sleep(1); 141 kill(pid, SIGUSR1); 142 143 if (wait(&i) == -1) { 144 perror("Error waiting for child to exit"); 145 printf("Test UNRESOLVED\n"); 146 /* close queue and exit */ 147 mq_close(rdwrqueue); 148 mq_unlink(qname); 149 return PTS_UNRESOLVED; 150 } 151 #ifdef DEBUG 152 printf("Child finished\n"); 153 #endif 154 155 mq_close(rdwrqueue); 156 mq_unlink(qname); 157 158 if (!WIFEXITED(i) || !WEXITSTATUS(i)) { 159 printf("Test FAILED: exit status %d\n", i); 160 return PTS_FAIL; 161 } 162 163 printf("Test PASSED\n"); 164 return PTS_PASS; 165 } 166 167 return PTS_UNRESOLVED; 168 } 169
