2386       int fds [2];  in evpipe_init()  local
2389       fds [0] = -1;  in evpipe_init()
2390       fds [1] = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);  in evpipe_init()
2391       if (fds [1] < 0 && errno == EINVAL)  in evpipe_init()
2392         fds [1] = eventfd (0, 0);  in evpipe_init()
2394       if (fds [1] < 0)  in evpipe_init()
2397           while (pipe (fds))  in evpipe_init()
2400           fd_intern (fds [0]);  in evpipe_init()
2403       evpipe [0] = fds [0];  in evpipe_init()
2406         evpipe [1] = fds [1]; /* first call, set write fd */  in evpipe_init()
2414           dup2 (fds [1], evpipe [1]);  in evpipe_init()
2415           close (fds [1]);  in evpipe_init()