TFD_TIMER_ABSTIME
nflags |= TFD_TIMER_ABSTIME;
if (flags & ~(TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET)) {
(flags & TFD_TIMER_ABSTIME) == 0) {
timerfd_settime(fd, TFD_TIMER_ABSTIME, &its, NULL) == -1);
RL(timerfd_settime(fd, TFD_TIMER_ABSTIME, &its, NULL));
ATF_REQUIRE(timerfd_settime(fd, TFD_TIMER_ABSTIME, &its, NULL) == 0);
ATF_REQUIRE(timerfd_settime(fd, TFD_TIMER_ABSTIME, &its, &oits) == 0);