Messages in this thread | | | Date | Tue, 26 Jun 2007 15:15:19 +0200 | From | Adrian Bunk <> | Subject | Re: [PATCH try #2] security: Convert LSM into a static interface |
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On Mon, Jun 25, 2007 at 10:57:31PM -0500, Serge E. Hallyn wrote: > Quoting James Morris (jmorris@namei.org): > > On Mon, 25 Jun 2007, Andreas Gruenbacher wrote: > > > > > It's useful for some LSMs to be modular, and LSMs which are y/n options won't > > > have any security architecture issues with unloading at all. > > > > Which LSMs? Upstream, there are SELinux and capabilty, and they're not > > safe as loadable modules. > > > > > The mere fact > > > that SELinux cannot be built as a module is a rather weak argument for > > > disabling LSM modules as a whole, so please don't. > > > > That's not the argument. Please review the thread. > > The argument is 'abuse', right? > > Abuse is defined as using the LSM hooks for non-security applications, > right? > > It seems to me that the community is doing a good job of discouraging > such abuse - by redirecting the "wrong-doers" to implement proper > upstream solutions, i.e. taskstats, the audit subsystem, etc. > > Such encouragement seems a far better response than taking away freedoms > and flexibility from everyone.
We are not living in a world where everyone had good intentions...
For _some_ "wrong-doers" your approach works.
But how do you convince the "wrong-doers" who do things like putting MODULE_LICENSE("GPL") into their binary-only modules and who ignore you and get away because noone sues them?
The spirit of the GPLv2 is to defend the freedom of the software (different from the spirit of the BSD licence), and considering that there aren't many people defending the GPLv2 copyright of the Linux kernel at court against abusers, making it harder for people to do the abuse might not be the worst choice...
> -serge
cu Adrian
--
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