>> By the way, in the code you have
>>
>> case EPOLL_CTL_MOD:
>> if (epi) {
>> if (!(epi->event.events & EPOLLEXCLUSIVE)) {
>> epds.events |= POLLERR | POLLHUP;
>> error = ep_modify(ep, epi, &epds);
>> }
>>
>> I think the "if" here is redundant. IIUC, earlier in the code you
>> disallow EPOLL_CTL_MOD with EPOLLEXCLUSIVE.
>>
>> Cheers,
>>
>> Michael
>>
>>
>
> Hi Michael,
>
> So the previous check ensures that you can not add the EPOLLEXCLUSIVE
> flag to the events via an EPOLL_CTL_MOD operation, where EPOLLEXCLUSIVE
> may not be the existing events set. While this check here ensure you
> can't modify an existing set that already has the EPOLLEXCLUSIVE flag.
Hmmm - I misread the code, itr seems :-/. Could you please carefully
check the man page text I sent earlier in this thread. Maybe I
injected some errors into the text.
Thanks,
Michael
--
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/
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