linux-kernel - Re: [PATCH 08/28] SECURITY: Allow kernel services to override LSM settings for task actions [try #2]

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Message-ID: <47688FEA.9070905@crispincowan.com>
Date:	Tue, 18 Dec 2007 19:28:42 -0800
From:	Crispin Cowan <crispin@...spincowan.com>
To:	Stephen Smalley <sds@...ho.nsa.gov>
CC:	David Howells <dhowells@...hat.com>,
	Karl MacMillan <kmacmill@...hat.com>, viro@....linux.org.uk,
	hch@...radead.org, Trond.Myklebust@...app.com,
	casey@...aufler-ca.com, linux-kernel@...r.kernel.org,
	selinux@...ho.nsa.gov, linux-security-module@...r.kernel.org,
	apparmor-dev <apparmor-dev@...ge.novell.com>
Subject: Re: [PATCH 08/28] SECURITY: Allow kernel services to override LSM
 settings for task actions [try #2]

Stephen Smalley wrote:
>> It is if I have to maintain a special pieces of code for each possible LSM.
>> One piece for SELinux, one piece for AppArmour, one piece for Smack, one piece
>> for Casey's security system.  That sounds like a pain.
>>     
> All your code has to do is invoke a function provided by libselinux.  If
> at some later time a liblsm is introduced that provides a common
> front-end to a libselinux, libsmack, ..., then you can use that.  But it
> doesn't exist today.   But it all just becomes a simple function call
> regardless.
>   
libapparmor exists. It only had one API, and now it has 2, but just 2
versions on the same concept (change_hat and change_profile).

This is the API for change_hat http://man-wiki.net/index.php/2:change_hat

What does the corresponding API in SELinux look like?

Crispin

-- 
Crispin Cowan, Ph.D.               http://crispincowan.com/~crispin
CEO, Mercenary Linux		   http://mercenarylinux.com/
	       Itanium. Vista. GPLv3. Complexity at work

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