Re: [PATCH 01/13] devpts: Teach /dev/ptmx to find the associated devpts via path lookup

[Eric W. Biederman]

Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes:

> On Mon, Apr 11, 2016 at 4:49 PM, Eric W. Biederman
> <ebiederm@xxxxxxxxxxxx> wrote:
>>
>> I replied earlier.  Did you not see my reply?
>
>
> Are you talking about the one where you agreed that the scenario was
> made up and insane? The one where you said that you're worried about
> breaking out "extension" where ptmx is non-0666?

I meant the one where I conceded that the only think that it could
possible protect against was a denial of service attack, from which we
probably don't care.

I just want to be certain that the emails are getting through.  As the
meaning certainly has not been.

I do think I called a permision check in posix_open aka on /dev/ptmx
a linux specific extension in that email.   But seriously it was all
about reducing the scope of the change.  Reducing the size of the test
matrix.  I simply had not looked far enough to see if there was anything
you could reasonable protect with those permissions.

As I agreed with you that it was unnecessary I was just puzzled why you
called what was essentially agreement with you deafening silence.

Eric