timed_read
ret = timed_read(reader_fd, &ch, sizeof(ch), &len, 5, &timedout,
ret = timed_read(reader_fd, &ch, sizeof(ch), &len, 5, &timedout,
ret = timed_read(reader_fd, &ch, sizeof(ch), &len, 5, &timedout,
ret = timed_read(reader_fd, &ch, sizeof(ch), &len, 5, &timedout,