[PATCH v2] Add SELinux policy for virt

[Daniel P. Berrangé]

On Wed, Apr 07, 2021 at 06:14:58AM -0700, Vit Mojzis wrote:
> Sorry for the long delay. This is our first request to ship a policy for
> multiple selinux stores (targeted, mls and minimum).
> 
> Changes:
> * Replace all selinux-policy-%{policytype} dependencies with selinux-policy-base
> * Add Ghost files representing installed policy modules in all policy stores
> * Rewrite policy compilation script in python
> * Compile the policy module twice (1 version for targeted/minimum - with 
>   enable_mcs, and 1 for mls - with enable_mls)
> * Manage policy (un)installation using triggers based on which policy
>   type is available
> 
> The new policy was only tested in "targeted" mode so far and we'll need to make 
> sure it works properly in "mls". As for "minimum", we know it will not
> work properly (as is the case of the current policy) by default (some 
> other "contrib" policy modules need to be enabled).
> I'd argue there is no point trying to get it to work in "minimum",
> mostly because it (minimum) will be retired soon.

I'm wondering how SELinux is supposed to integrate with containers when
using a modular policy.

Right now you can install RPMs in a container, and use selinux enforcement
on that container because the host OS policy provides all the rules in the
monolithic blob.

If we take this policy into libvirt, then when you install libvirt in a
container, there will be no selinux policy available.

Users can't install libvirt-selinux inside the container, as it needs to be
built against the main policy in the host.

User likely won't install libvirt-selinux outside the container as that
defeats the purpose of using containers for their deployment mechanism.

Container based deployment of libvirt is important for both OpenStack
and KubeVirt.

Regards,
Daniel
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