Re: [RFC PATCH 12/12] IMA: Use the the system trusted keyrings instead of .ima_mok [ver #2]

[David Howells]

Mimi Zohar <zohar@xxxxxxxxxxxxxxxxxx> wrote:

> Only certificates signed by a key on the system keyring were added to
> the IMA keyring, unless IMA_MOK_KEYRING was configured.  Then, the
> certificate could be signed by a either a key on the system or ima_mok
> keyrings.  To replicate this behavior, the default behavior should be to
> only permit certificates signed by a key on the builtin keyring, unless
> this new Kconfig is enabled.  Only then, permit certificates signed by a
> key on either the builtin or secondary keyrings to be added to the IMA
> keyring.

How about I change it to a choice-type item, with the following options:

 (1) No addition.

 (2) Addition restricted by built-in keyring.

 (3) Addition restricted by secondary keyring + built-in keyring.

where the second and third options then depend on the appropriate keyrings
being enabled.

David