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Date: Wed, 08 Jul 2009 21:09:19 +0300
From: Avi Kivity <avi@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH 0/5] ATAPI pass through v2
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To: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Cc: Ian Jackson <Ian.Jackson@eu.citrix.com>, Paul Brook <paul@codesourcery.com>, Alexandre Bique <bique.alexandre@gmail.com>, qemu-devel@nongnu.org

On 07/08/2009 08:28 PM, Carl-Daniel Hailfinger wrote:
> On 08.07.2009 18:38, Avi Kivity wrote:
>    
>> On 07/08/2009 07:09 PM, Ian Jackson wrote:
>>      
>>>> I'm sure something like SELinux can be used to prevent a root QEMU
>>>> process from doing a firmware upgrade.
>>>>
>>>>          
>>> *boggle*  You're not serious, are you ?
>>>        
>> selinux can prevent anything.  In fact, I'm sure it does.
>>      
>
> I doubt SELinux has a builtin ATAPI command filter which knows all
> _undocumented_ firmware upgrade commands. In fact, there are some ATAPI
> devices which abuse existing and documented-as-harmless ATAPI commands
> (which are regularly used for CD burning) for firmware upgrades.
>    

Come on, it was a joke (though these days you can actually work on a 
machine with selinux enabled).

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.