linux-kernel - Re: [PATCH v4 0/8] kexec/firmware: support system wide policy requiring signatures

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Message-ID: <20180605132542.GA26722@mail.hallyn.com>
Date:   Tue, 5 Jun 2018 08:25:42 -0500
From:   "Serge E. Hallyn" <serge@...lyn.com>
To:     Kees Cook <keescook@...omium.org>
Cc:     "Serge E. Hallyn" <serge@...lyn.com>,
        Mimi Zohar <zohar@...ux.vnet.ibm.com>,
        Casey Schaufler <casey@...aufler-ca.com>,
        James Morris <james.l.morris@...cle.com>,
        Paul Moore <paul@...l-moore.com>,
        linux-integrity <linux-integrity@...r.kernel.org>,
        linux-security-module <linux-security-module@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        David Howells <dhowells@...hat.com>,
        "Luis R . Rodriguez" <mcgrof@...nel.org>,
        Eric Biederman <ebiederm@...ssion.com>,
        Kexec Mailing List <kexec@...ts.infradead.org>,
        Andres Rodriguez <andresx7@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Ard Biesheuvel <ard.biesheuvel@...aro.org>,
        Jessica Yu <jeyu@...nel.org>
Subject: Re: [PATCH v4 0/8] kexec/firmware: support system wide policy
 requiring signatures

Quoting Kees Cook (keescook@...omium.org):
> On Mon, Jun 4, 2018 at 9:09 PM, Serge E. Hallyn <serge@...lyn.com> wrote:
> > Personally I agree with Eric and prefer a new hook.  I don't feel strongly
> > enough about it to keep bikeshedding, but since this set already exists,
> > it seems like the way to go.
> 
> And the new hook is "load stuff without a file descriptor"?

Yes.  Load stuff based on my own credentials not those attached
to a file.