Re: eventfd(2) and timerfd(2) APIs

[Jason Thorpe <thorpej%me.com@localhost>]

> On Sep 18, 2021, at 6:26 PM, Jason Thorpe <thorpej%me.com@localhost> wrote:
> 
>> On Sep 18, 2021, at 5:51 PM, Robert Elz <kre%munnari.OZ.AU@localhost> wrote:
>> 
>> | You'll get EBADF if you try it on anything else
>> 
>> and that's definitely wrong, on a pipe the system is allowed to return EINVAL,
>> and that's what ought to be returned whenever the fd is not something that
>> supports chmod (etc).   EBADF should only be used when the process doesn't
>> have the fd open.
> 
> Oops, I may be wrong about that specific detail.  I’ll double-check later.

Indeed, I was mistaken, you do get EINVAL in the “good fd that’s not a vnode” case.

-- thorpej