[PATCH] support: Enhance support_need_proc

[Florian Weimer]

* DJ Delorie:

> Florian Weimer <fweimer@redhat.com> writes:
>> I figured out this much from the comments, but it doesn't make quite
>> sense: I don't see anything in our xmkdirp implementation that would
>> require this.  And I would assume that directories and files aren't
>> different, and that a lack of user mapping would impact creation of
>> files in other places, too.
>
> It's the generic "need perms to mkdir".  Checking for /proc and issuing
> a meaningful error message is far more useful than xmkdir failing with
> "xmkdir: permission denied" with no explaination *why*.
>
> We used to fail all container tests if test-container couldn't mount
> /proc but that was changed...

Are you able to reproduce it in some way?

Thanks,
Florian