linux-kernel - Re: [PATCH RFC 05/12] integrity: Introduce mok keyring

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Date:   Thu, 8 Jul 2021 00:26:11 +0300
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Eric Snowberg <eric.snowberg@...cle.com>, keyrings@...r.kernel.org,
        linux-integrity <linux-integrity@...r.kernel.org>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        David Howells <dhowells@...hat.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        David Miller <davem@...emloft.net>,
        James Morris James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Kees Cook <keescook@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        scott.branden@...adcom.com, Wei Yongjun <weiyongjun1@...wei.com>,
        Nayna Jain <nayna@...ux.ibm.com>,
        Eric Biggers <ebiggers@...gle.com>,
        Ard Biesheuvel <ardb@...nel.org>, nramas@...ux.microsoft.com,
        Lenny Szubowicz <lszubowi@...hat.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        LSM List <linux-security-module@...r.kernel.org>,
        James Bottomley <James.Bottomley@...senpartnership.com>,
        Peter Jones <pjones@...hat.com>, Gary Lin <glin@...e.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Subject: Re: [PATCH RFC 05/12] integrity: Introduce mok keyring

On Wed, Jul 07, 2021 at 12:31:23PM -0700, Linus Torvalds wrote:
> On Tue, Jul 6, 2021 at 7:45 PM Eric Snowberg <eric.snowberg@...cle.com> wrote:
> >
> > Introduce a new keyring called mok.  This keyring will be used during
> > boot. Afterwards it will be destroyed.
> 
> Already discussed elsewhere, but yeah, when using TLA's, unless they
> are universally understood (like "CPU" or "TLB" or whatever), please
> spell them out somewhere for people who don't have the background.
> 
> I saw that you said elsewhere that MOK is "Machine Owner Key", but
> please let's just have that in the sources and commit messages at
> least for the original new code cases.
> 
> Maybe it becomes obvious over time as there is more history to the
> code, but when you literally introduce a new concept, please spell it
> out.
> 
>            Linus
> 
I'd suggest for the short summary:

"integrity: Introduce a Linux keyring for the Machine Owner Key (MOK)"

Given that "keyring" is such a saturated and ambiguous word, and this not a
subsystem patch for keyring itself, it should be explicit what is meant by
a keyring.

/Jarkko