POLLINIGNEOF
(POLLIN | POLLINIGNEOF | POLLPRI | POLLRDNORM | POLLRDBAND);
events |= POLLINIGNEOF;
if ((events & POLLINIGNEOF) == 0) {
else if ((events & POLLINIGNEOF) == 0 && so->so_error)
if ((events & POLLINIGNEOF) == 0) {
case POLLINIGNEOF:
X(POLLWRBAND) X(POLLINIGNEOF) X(POLLRDHUP) XEND