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Date: Wed, 13 Feb 2013 14:26:45 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Casey Schaufler <casey@schaufler-ca.com>
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Subject: Re: [PATCH] x86: Lock down MSR writing in secure boot
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On 02/13/2013 09:51 AM, Casey Schaufler wrote:
>
> You can't add a new capability where there is an existing capability
> that can be remotely argued to be appropriate.
>
> If you tried to "fix" CAP_SYS_RAWIO and/or CAP_SYS_ADMIN you'd end
> up with hundreds of capabilities.
>
> Your particular problem is *not* so important that you get a
> capability all to yourself.
>

{facepalm}

This is exactly the kind of thinking which has led to the capability 
system being so bloody useless.

Capabilities need to be associated with resources, not use cases.

	-hpa


-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.