zdtm/file_locks03: don't use pipe for synchronization

Reported-by: Mr Jenkins
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/zdtm/live/static/file_locks03.c

@@ -64,12 +64,10 @@ static int check_file_locks(int alt_pid)
 
 int main(int argc, char **argv)
 {
-	int fd, pf[2], pid;
+	int fd, pid;
 
 	test_init(argc, argv);
 
-	pipe(pf);
-
 	fd = open(filename, O_CREAT | O_RDWR, 0600);
 	if (fd < 0) {
 		err("No file");
@@ -80,12 +78,10 @@ int main(int argc, char **argv)
 
 	pid = fork();
 	if (pid == 0) {
-		close(pf[1]);
-		read(pf[0], &pid, sizeof(pid));
+		test_waitsig();
 		exit(0);
 	}
 
-	close(pf[0]);
 	close(fd);
 
 	test_daemon();
@@ -96,7 +92,7 @@ int main(int argc, char **argv)
 	else
 		fail("Flock file locks check failed");
 
-	close(pf[1]);
+	kill(pid, SIGTERM);
 	waitpid(pid, NULL, 0);
 	close(fd);
 	unlink(filename);