Re: [Qemu-devel] [PATCH 2/3] XXX oslib-posix: Ignore fcntl("/dev/null", F_SETFL, O_NONBLOCK) failure

[Paolo Bonzini]

On 28/01/19 10:47, Alex Bennée wrote:
>>
>> [1] The fix seems https://github.com/openbsd/src/commit/c2a35b387f9d3c
>>   "fcntl(F_SETFL) invokes the FIONBIO and FIOASYNC ioctls internally, so
>>   the memory devices (/dev/null, /dev/zero, etc) need to permit them."
> I assume set_nonblock is called on more than just these special devices?
> Is there anyway to check this on OpenBSD or is it just an anonymous fd
> at this point?
> 

Perhaps on OpenBSD we should just assert that we don't get EBADF?

Paolo