Re: [PATCH v5 07/12] KEYS: Introduce link restriction to include builtin, secondary and machine keys

From: Mimi Zohar <zohar@linux.ibm.com>
To: Eric Snowberg <eric.snowberg@oracle.com>,
	keyrings@vger.kernel.org, linux-integrity@vger.kernel.org,
	dhowells@redhat.com, dwmw2@infradead.org,
	herbert@gondor.apana.org.au, davem@davemloft.net,
	jarkko@kernel.org, jmorris@namei.org, serge@hallyn.com
Cc: keescook@chromium.org, gregkh@linuxfoundation.org,
	torvalds@linux-foundation.org, scott.branden@broadcom.com,
	weiyongjun1@huawei.com, nayna@linux.ibm.com, ebiggers@google.com,
	ardb@kernel.org, nramas@linux.microsoft.com, lszubowi@redhat.com,
	linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org,
	linux-security-module@vger.kernel.org,
	James.Bottomley@HansenPartnership.com, pjones@redhat.com,
	konrad.wilk@oracle.com
Subject: Re: [PATCH v5 07/12] KEYS: Introduce link restriction to include builtin, secondary and machine keys
Date: Thu, 09 Sep 2021 13:26:47 -0400	[thread overview]
Message-ID: <b8ba9facf525c60760b49da6cea50d701ad5613d.camel@linux.ibm.com> (raw)
In-Reply-To: <20210907160110.2699645-8-eric.snowberg@oracle.com>

Hi Eric,

The subject line above is too long.   According to
Documentation/process/submitting-patches.rst the "the ``summary`` must
be no more than 70-75 characters".

On Tue, 2021-09-07 at 12:01 -0400, Eric Snowberg wrote:
> Introduce a new link restriction that includes the trusted builtin,
> secondary and machine keys. The restriction is based on the key to be added
> being vouched for by a key in any of these three keyrings.
> 
> Suggested-by: Mimi Zohar <zohar@linux.ibm.com>
> Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
> ---
> v3: Initial version
> v4: moved code under CONFIG_INTEGRITY_MOK_KEYRING
> v5: Rename to machine keyring
> ---
>  certs/system_keyring.c        | 23 +++++++++++++++++++++++
>  include/keys/system_keyring.h |  6 ++++++
>  2 files changed, 29 insertions(+)
> 
> diff --git a/certs/system_keyring.c b/certs/system_keyring.c
> index 08ea542c8096..955bd57815f4 100644
> --- a/certs/system_keyring.c
> +++ b/certs/system_keyring.c
> @@ -99,6 +99,29 @@ void __init set_machine_trusted_keys(struct key *keyring)
>  {
>  	machine_trusted_keys = keyring;
>  }
> +
> +/**
> + * restrict_link_by_builtin_secondary_and_ca_trusted

Sorry for the patch churn.  With the keyring name change to ".machine",
the restriction name should also reflect this change.

thanks,

Mimi