| /* |
| * Copyright (c) 2003, Intel Corporation. All rights reserved. |
| * Created by: majid.awad 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. |
| */ |
| |
| /* sem_wait hangs when it tries to lock a locked semaphore, and then killed |
| * by sending a kill signal. |
| */ |
| |
| #include <stdio.h> |
| #include <errno.h> |
| #include <unistd.h> |
| #include <semaphore.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <sys/wait.h> |
| #include "posixtest.h" |
| |
| #define TEST "7-1" |
| #define FUNCTION "sem_wait" |
| #define ERROR_PREFIX "unexpected error: " FUNCTION " " TEST ": " |
| |
| #define CHILDPASS 1 |
| #define CHILDFAIL 0 |
| |
| void handler(int signo) |
| { |
| printf("In handler\n"); |
| } |
| |
| int main() |
| { |
| sem_t *mysemp; |
| char semname[28]; |
| int pid, status; |
| |
| sprintf(semname, "/" FUNCTION "_" TEST "_%d", getpid()); |
| |
| mysemp = sem_open(semname, O_CREAT, 0, 1); |
| if (mysemp == SEM_FAILED || mysemp == NULL) { |
| perror(ERROR_PREFIX "sem_open"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (sem_wait(mysemp) == -1) { |
| perror(ERROR_PREFIX "sem_wait"); |
| return PTS_UNRESOLVED; |
| } |
| |
| pid = fork(); |
| if (pid == 0) { // child create the semaphore. |
| struct sigaction act; |
| |
| act.sa_handler=handler; |
| act.sa_flags=0; |
| if (sigemptyset(&act.sa_mask) == -1) { |
| perror("Error calling sigemptyset\n"); |
| return CHILDFAIL; |
| } |
| if (sigaction(SIGABRT, &act, 0) == -1) { |
| perror("Error calling sigaction\n"); |
| return CHILDFAIL; |
| } |
| |
| sem_wait(mysemp); |
| |
| if (errno == EINTR) { |
| printf("Test PASSED\n"); |
| return (CHILDPASS); |
| } |
| puts("TEST FAILED: errno != EINTR"); |
| return (CHILDFAIL); |
| |
| } else { // parent to send a signal to child |
| int i; |
| sleep(1); |
| status = kill(pid,SIGABRT); // send signal to child |
| if (wait(&i) == -1) { |
| perror("Error waiting for child to exit\n"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (!WEXITSTATUS(i)) { |
| return PTS_FAIL; |
| } |
| puts("TEST PASSED"); |
| sem_unlink(semname); |
| return PTS_PASS; |
| } |
| |
| return PTS_UNRESOLVED; |
| } |