| /* |
| * Copyright (c) 2003, Intel Corporation. All rights reserved. |
| * Created by: julie.n.fleischer REMOVE-THIS AT intel DOT com |
| * This file is licensed under the GPL license. For the full content |
| * of this license, see the COPYING file at the top level of this |
| * source tree. |
| */ |
| |
| /* |
| * Test that if the message queue is full and O_NONBLOCK is not set, |
| * mq_timedsend() will block until it is interrupted by a signal. |
| * |
| * Have a child send signals until it starts to block. At that point, have |
| * the parent send a signal to the child. Test passes if send was interrupted |
| * by the signal. |
| */ |
| |
| #include <stdio.h> |
| #include <mqueue.h> |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <stdint.h> |
| #include <signal.h> |
| #include <errno.h> |
| #include "posixtest.h" |
| |
| #define NAMESIZE 50 |
| #define MSGSTR "0123456789" |
| #define BUFFER 40 |
| #define MAXMSG 5 |
| |
| #define CHILDPASS 1 |
| #define CHILDFAIL 0 |
| |
| char gqname[NAMESIZE]; |
| mqd_t gqueue; |
| |
| /* |
| * This handler is just used to catch the signal and stop sleep (so the |
| * parent knows the child is still busy sending signals). |
| */ |
| void justreturn_handler(int signo) |
| { |
| return; |
| } |
| |
| int main() |
| { |
| int pid; |
| const char *msgptr = MSGSTR; |
| struct mq_attr attr; |
| struct sigaction act; |
| |
| sprintf(gqname, "/mq_timedsend_5-2_%d", getpid()); |
| |
| attr.mq_msgsize = BUFFER; |
| attr.mq_maxmsg = MAXMSG; |
| gqueue = mq_open(gqname, O_CREAT |O_RDWR, S_IRUSR | S_IWUSR, &attr); |
| if (gqueue == (mqd_t)-1) { |
| perror("mq_open() did not return success"); |
| return PTS_UNRESOLVED; |
| } |
| |
| /* parent and child use justreturn_handler to just return out of |
| * situations -- parent uses to stop it's sleep and wait again for |
| * the child; child uses to stop its mq_timedsend |
| */ |
| act.sa_handler=justreturn_handler; |
| act.sa_flags=0; |
| sigemptyset(&act.sa_mask); |
| sigaction(SIGABRT, &act, 0); |
| |
| if ((pid = fork()) == 0) { |
| /* child here */ |
| int i; |
| struct timespec ts; |
| /* set up timeout to be as long as possible */ |
| ts.tv_sec=INT32_MAX; |
| ts.tv_nsec=0; |
| |
| sleep(1); // give parent time to set up handler |
| for (i=0; i<MAXMSG+1; i++) { |
| if (mq_timedsend(gqueue, msgptr, |
| strlen(msgptr), 1, &ts) == -1) { |
| if (errno == EINTR) { |
| printf("mq_timedsend interrupted by signal\n"); |
| return CHILDPASS; |
| } else { |
| printf("mq_timedsend not interrupted by signal\n"); |
| return CHILDFAIL; |
| } |
| } |
| /* send signal to parent each time message is sent */ |
| kill(getppid(), SIGABRT); |
| } |
| |
| printf("Child never blocked\n"); |
| return CHILDFAIL; |
| } else { |
| /* parent here */ |
| int j,k, blocking=0; |
| |
| for (j=0; j<MAXMSG+1; j++) { |
| if (sleep(3) == 0) { |
| /* If sleep finished, child is probably blocking */ |
| blocking=1; //set blocking flag |
| kill(pid, SIGABRT); //signal child |
| break; |
| } |
| } |
| |
| if (blocking!=1) { |
| printf("Signal never blocked\n"); |
| kill(pid, SIGKILL); //kill child if not gone |
| mq_close(gqueue); |
| mq_unlink(gqname); |
| return PTS_UNRESOLVED; |
| } |
| mq_close(gqueue); |
| if (mq_unlink(gqname) != 0) { |
| perror("mq_unlink()"); |
| kill(pid, SIGKILL); //kill child if not gone |
| return PTS_UNRESOLVED; |
| } |
| |
| if (wait(&k) == -1) { |
| perror("Error waiting for child to exit\n"); |
| kill(pid, SIGKILL); //kill child if not gone |
| return PTS_UNRESOLVED; |
| } |
| |
| if (!WIFEXITED(k) || !WEXITSTATUS(k)) { |
| printf("Test FAILED\n"); |
| return PTS_FAIL; |
| } |
| |
| printf("Test PASSED\n"); |
| return PTS_PASS; |
| } |
| |
| return PTS_UNRESOLVED; |
| } |