epoll doesn't (or didn't) work with /dev/null either in any case. Only select works on everything on macOS and only poll or select on Linux. On Tue, 11 Jan 2022, 22:46 Damien Miller, <djm@xxxxxxxxxxx> wrote: > On Tue, 11 Jan 2022, Demi Marie Obenour wrote: > > > > Wow, it looks like Darwin's poll(2) is completely broken for > > > character- special devices (at least). E.g. the attached program > > > spins shows similar behaviour when run on /dev/null - it spins, > > > returning revents=POLLNVAL. > > > > Is using kqueue(2) an option? That’s faster, and it doesn’t have the > > problem with large file descriptors that poll(2) has. > > No, because it's not cross-platform and I don't want to have to maintain > multiple mainloops (believe me, one is more than enough). It would have > been really nice if the OSS Unix-like operating systems has standardised > on one event notification; kqueue and epoll are both fine. > > Also, it seems like the OS X kqueue(2) implementation suffers from the > same bug anyway. I suspect that this is the root cause, and that their > poll(2) is built on top of kqueue(2). > > -d > _______________________________________________ > openssh-unix-dev mailing list > openssh-unix-dev@xxxxxxxxxxx > https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev > _______________________________________________ openssh-unix-dev mailing list openssh-unix-dev@xxxxxxxxxxx https://lists.mindrot.org/mailman/listinfo/openssh-unix-dev
