kern_timerfd_gettime
error = kern_timerfd_gettime(td, uap->fd, &curr_value);
error = kern_timerfd_gettime(td, args->fd, &ots);
error = kern_timerfd_gettime(td, args->fd, &ots);
error = kern_timerfd_gettime(td, uap->fd, &curr_value);
int kern_timerfd_gettime(struct thread *td, int fd,