linux-kernel - Re: [PATCH] MODSIGN: Change default key details [ver #2]

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Date:	Mon, 4 May 2015 11:45:22 -0700
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Abelardo Ricart III <aricart@...nix.com>
Cc:	Michal Marek <mmarek@...e.cz>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Sedat Dilek <sedat.dilek@...il.com>,
	David Howells <dhowells@...hat.com>, keyrings@...ux-nfs.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	LSM List <linux-security-module@...r.kernel.org>,
	James Morris <james.l.morris@...cle.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH] MODSIGN: Change default key details [ver #2]

On Sun, May 3, 2015 at 6:45 PM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
>
> I'd much rather see "x509.genkey" be generated with a move-if-changed
> pattern, so that it only changes if (a) it didn't exist before or (b)
> it actually has new content.

Hmm. Something like the attached, to make the .x509.list file be
properly generated?

That still leaves the problem that the X509_CERTIFICATES variable
itself seems to be badly defined, in that it ends up randomly having
the "./" in front of the filename due to confusion between
"signing_key.x509" being both in

   X509_CERTIFICATES-y := $(wildcard *.x509) $(wildcard $(srctree)/*.x509)

(when that .x509 file was pre-existing), and

   X509_CERTIFICATES-$(CONFIG_MODULE_SIG) += $(objtree)/signing_key.x509

where I think that "$(objtree)/" comes in.

DavidH, comments?

                           Linus

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