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SubjectRe: [PATCH v12 0/9] LSM: Multiple concurrent LSMs
On Mon, Jan 07, 2013 at 20:02 -0800, Casey Schaufler wrote:
> On 1/7/2013 7:01 PM, Stephen Rothwell wrote:
> > Let me ask Andrew's question: Why do you want to do this (what is the
> > use case)? What does this gain us?
> There has been an amazing amount of development in system security
> over the past three years. Almost none of it has been in the kernel.
> One important reason that it is not getting done in the kernel is
> that the current single LSM restriction requires an all or nothing
> approach to security. Either you address all your needs with a single
> LSM or you have to go with a user space solution, in which case you
> may as well do everything in user space.

You should also update Documentation/security/LSM.txt with new "security="
rules and rules of LSM stacking limitations. Motivation of stacking is
probably worth noting in Documentation/ too.


Vasily Kulikov - bringing security into open computing environments

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