set_pollfd
if ((set_pollfd(uds_fd, POLLIN)) == -1) {
if ((set_pollfd(rst_event_pipe[PE_CONSUMER], POLLIN)) == -1)
} else if (set_pollfd(pi->listen_fd,
extern int set_pollfd(int, uint16_t);
if (set_pollfd(fd, 0) == -1) {
extern void set_pollfd(int /* fd */, short /* events */);
set_pollfd(xprt->xp_fd, MASKVAL);