linux-kernel - Re: [RFC PATCH 11/12] certs: Add a secondary system keyring that can be added to dynamically [ver #2]

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Date:	Mon, 07 Mar 2016 21:05:35 -0500
From:	Mimi Zohar <zohar@...ux.vnet.ibm.com>
To:	David Howells <dhowells@...hat.com>
Cc:	linux-security-module@...r.kernel.org, keyrings@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 11/12] certs: Add a secondary system keyring that
 can be added to dynamically [ver #2]

On Fri, 2016-03-04 at 15:01 +0000, David Howells wrote:
> Add a secondary system keyring that can be added to by root whilst the
> system is running - provided the key being added is vouched for by a key
> built into the kernel or already added to the secondary keyring.
> 
> Rename .system_keyring to .builtin_trusted_keys to distinguish it more
> obviously from the new keyring (called .secondary_trusted_keys).

Renaming of the system_trusted_keyring to builtin_trusted_keys is fine,
but we're left with a lot of references to "system_trusted" (eg.
restrict_link_to_system_trusted, depends on SYSTEM_TRUSTED_KEYRING,  the
subsequent patch description and Kconfig use "system trusted keyrings",
etc).   Without changing these references, I'm not convinced this is an
improvement. 

Mimi

> The new keyring needs to be enabled with CONFIG_SECONDARY_TRUSTED_KEYRING.
> 
> If the secondary keyring is enabled, a link is created from that to
> .builtin_trusted_keys so that the the latter will automatically be searched
> too if the secondary keyring is searched.
> 
> Signed-off-by: David Howells <dhowells@...hat.com>