Re: Time to remove LSM (was Re: [RESEND][RFC][PATCH 2/7] implementation of LSM hooks)

[Stephen Smalley <sds@tycho.nsa.gov>]

On Wed, 2006-04-19 at 11:10 -0700, Greg KH wrote:
> On Wed, Apr 19, 2006 at 12:33:24PM -0400, James Morris wrote:
> > The LSM interface is also being abused by several proprietary kernel 
> > modules, some of which are not even security related.  In one case, 
> > there's code which dangerously revectors SELinux with a shim layer 
> > designed to try and bypass the GPL.  Some of this is a response to 
> > unexporting the syscall table, where projects which abused that have now 
> > switched to LSM.
> 
> I agree that this is happening today.  Which makes me wonder, why is the
> variable "security_ops" exported through "EXPORT_SYMBOL()" and not
> "EXPORT_SYMBOL_GPL()"?  It seems that people are taking advantage of
> this and changing it would help slow them down a bit.
> 
> Chris, would you take a patch to change this?

Seems like a rather weak mechanism.   Compared to eliminating
security_ops altogether.

-- 
Stephen Smalley
National Security Agency

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