Re: [PATCH v1 5/6] KEYS: measure queued keys

From: Mimi Zohar
Date: Wed Oct 23 2019 - 13:52:30 EST


On Wed, 2019-10-23 at 10:34 -0700, Lakshmi Ramasubramanian wrote:
> On 10/23/19 6:23 AM, Mimi Zohar wrote:
>
> > The ordering of this patch set is awkward. ÂIt should first introduce
> > a generic method for measuring keys based on the keyring. ÂThen add
> > the additional support needed for the specific builtin_trusted_keys
> > keyring usecase.
>
> Would the following ordering of the patch set be acceptable:
>
> => PATCH 0/5: Cover letter
>
> => PATCH 1/5: Define the enum "hook(BUILTIN_TRUSTED_KEYS)" in ima.h
>
> => PATCH 2/5: Define ima hook
> This will initially do nothing if ima is not yet
> initialized.
> Call process_buffer_measurement() if ima is initialized.
>
> => PATCH 3/5: key_create_or_update change and the call to ima hook
>
> => PATCH 4/5: Queue\De-Queue of key measurement requests.
> Enable queuing of key in the ima hook if ima is not
> initialized.
>
> => PATCH 5/5: ima policy to enable measurement of keys which will
> enable end-to-end working of this feature.

The first patches need to introduce the generic concept of measuring
keys based on policy. ÂOnly afterwards would you add any builtin
trusted keyring specific code.

Mimi