linux-kernel - Re: [RFC] enhancing the kernel's graphics subsystem

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Message-ID: <9e4733910705211029o177463aakaf476cd927359473@mail.gmail.com>
Date:	Mon, 21 May 2007 13:29:32 -0400
From:	"Jon Smirl" <jonsmirl@...il.com>
To:	"Dave Airlie" <airlied@...il.com>
Cc:	"Jesse Barnes" <jbarnes@...tuousgeek.org>,
	"Jesse Barnes" <jesse.barnes@...el.com>,
	linux-kernel@...r.kernel.org,
	"Antonino A. Daplas" <adaplas@...il.com>
Subject: Re: [RFC] enhancing the kernel's graphics subsystem

On 5/21/07, Dave Airlie <airlied@...il.com> wrote:
> > 3) Eliminate the need for a root priv controlling process. Get rid of
> > the potential for a security hole.
>
> Stupid idea, we need something to control policy, this isn't going in
> the kernel, it can be a lot smaller than X and auditable.. sticking
> the DRI protocol in the kernel is just pointless..

Try to be more flexible with your thinking. It is ok to have a
transient, privileged command line app that does something like assign
an output to be under the control of a specific CRTC. I have no
problem with some of the IOCTLs requiring root priv.

What is not ok is to require a permanently running root priv process.
If the code is going to always be running make it as small as possible
and put it in the device driver.

-- 
Jon Smirl
jonsmirl@...il.com
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