linux-kernel - Re: [PATCH] Smack: Simplified Mandatory Access Control Kernel

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Message-Id: <F249B290-129C-4A41-8BBF-2C601D3B00F6@mac.com>
Date:	Sun, 12 Aug 2007 22:45:38 -0400
From:	Kyle Moffett <mrmacman_g4@....com>
To:	Joshua Brindle <method@...icmethod.com>
Cc:	casey@...aufler-ca.com, linux-security-module@...r.kernel.org,
	LKML Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Smack: Simplified Mandatory Access Control Kernel

On Aug 12, 2007, at 22:36:15, Joshua Brindle wrote:
> Kyle Moffett wrote:
>> On Aug 12, 2007, at 15:41:46, Casey Schaufler wrote:
>>> Your boolean solution requires more forthought than the Smack  
>>> rule solution, but I'll give it to you once you've fleshed out  
>>> your "##" lines.
>>
>> How does it require more forethought?  When I want to turn it on,  
>> I write and load the 5 line policy then add the cronjobs.  Yours  
>> involves giving cron unconditional permission to write to your  
>> security database (always a bad idea) and then adding similar  
>> cronjobs.
>
> nit: without the selinux policy server (which is not production  
> ready by any means) we have to grant the same to cron in this case  
> (or at least to the domain that cron runs the cronjobs in). SELinux  
> and Smack alike need special permissions to modify the running  
> policy, no surprises there.

Yeah, I figured this out a couple minutes ago.  Turns out you can get  
a similar effect with a little properly labeled shell script though  
(text included in my last email), but it does decrease overall system  
security.

Cheers,
Kyle Moffett

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