FIFO_FILE_PATH
(void)unlink(FIFO_FILE_PATH);
if (mkfifo(FIFO_FILE_PATH, S_IRUSR | S_IWUSR) == -1)
if ((fd = open(FIFO_FILE_PATH, O_WRONLY, 0)) == -1)
if ((fd = open(FIFO_FILE_PATH, O_RDONLY, 0)) == -1) {
fd = open(FIFO_FILE_PATH, O_WRONLY, 0);