TFD_TIMER_CANCEL_ON_SET
nflags |= TFD_TIMER_CANCEL_ON_SET;
if (flags & ~(TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET)) {
tfd->tfd_cancel_on_set = !!(flags & TFD_TIMER_CANCEL_ON_SET);
ATF_REQUIRE(timerfd_settime(fd, TFD_TIMER_CANCEL_ON_SET,
ATF_REQUIRE(timerfd_settime(fd, TFD_TIMER_CANCEL_ON_SET,