/*
 * 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_timedwait will return successfully when sem_post 
 * will unlock the semaphore from another process.
 */

#define _XOPEN_SOURCE 600

#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <semaphore.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <fcntl.h>
#include <signal.h>
#include <time.h>
#include "posixtest.h"


#define TEST "2-1"
#define FUNCTION "sem_timedwait"
#define ERROR_PREFIX "unexpected error: " FUNCTION " " TEST ": "


int main()
{  
        sem_t mysemp;
	struct timespec ts;
	int pid;


	/* Semaphore started out locked */
	 if ( sem_init (&mysemp, 0, 0) == -1 ) {
		perror(ERROR_PREFIX "sem_init");
                return PTS_UNRESOLVED;
         }

	pid = fork();
	if (pid == 0)  // child to lock semaphore
	{  
		ts.tv_sec=time(NULL)+2;
		ts.tv_nsec=0;

	       	if( sem_timedwait(&mysemp, &ts) == -1 ) {
			puts ("TEST FAILED");
			return PTS_FAIL;
		} else {
			puts("TEST PASSED");
			sem_destroy(&mysemp);
			return PTS_PASS;
		}
	}
	else if (pid > 0) // parent to unlock semaphore
	{  
		int i;
		sleep(1);
		if (sem_post(&mysemp) == -1 ) {
			perror(ERROR_PREFIX "sem_post");
			return PTS_FAIL;
		}
		if (wait(&i) == -1) {
			perror("Error waiting for child to exit");
			return PTS_UNRESOLVED;
		}

		if (!WEXITSTATUS(i)) {
			return PTS_FAIL;
		}
		puts("TEST PASSED");
		sem_destroy(&mysemp);
		return PTS_PASS;
	}
return PTS_UNRESOLVED;
}
