[PATCH v9 05/23] ima: Define ima_namespace struct and start moving variables into it

[Christian Brauner]

On Tue, Jan 25, 2022 at 05:46:27PM -0500, Stefan Berger wrote:
> From: Stefan Berger <stefanb at linux.ibm.com>
> 
> Define the ima_namespace structure and the ima_namespace variable
> init_ima_ns for the host's IMA namespace. Implement basic functions for
> namespacing support.
> 
> Move variables related to the IMA policy into the ima_namespace. This way
> the IMA policy of an IMA namespace can be set and displayed using a
> front-end like securityfs.
> 
> Implement ima_ns_from_file() to get the IMA namespace via the user
> namespace of the securityfs superblock that a file belongs to.
> 
> To get the current ima_namespace use &init_ima_ns when a function
> that is related to a policy rule is called.
> 
> Signed-off-by: Stefan Berger <stefanb at linux.ibm.com>
> 
> ---

For the approach of introducing struct ima_namespace and moving a bunch
of variables in there at the same time to prepare subsequent further
namespacing:

Acked-by: Christian Brauner <brauner at kernel.org>

I can't speak to the actual ima changes.