Date: Mon, 5 Nov 2012 08:24:25 -0500
From: Josh Boyer <jwboyer@redhat.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: Bruno Wolff III <bruno@wolff.to>, dhowells@redhat.com,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] MODSIGN: Only sign modules if built in-tree
Message-ID: <20121105132424.GA27352@hansolo.jdub.homelinux.org>
References: <20121031132749.GH6627@hansolo.jdub.homelinux.org>
 <87390t6bs0.fsf@rustcorp.com.au>
 <20121101112655.GM6627@hansolo.jdub.homelinux.org>
 <20121101145013.GN6627@hansolo.jdub.homelinux.org>
 <87liek4rt5.fsf@rustcorp.com.au>
 <20121102123404.GO6627@hansolo.jdub.homelinux.org>
 <87vcdkyfi4.fsf@rustcorp.com.au>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <87vcdkyfi4.fsf@rustcorp.com.au>
User-Agent: Mutt/1.5.21 (2010-09-15)
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1356
Lines: 39

On Mon, Nov 05, 2012 at 12:31:39PM +1030, Rusty Russell wrote:
> Josh Boyer <jwboyer@redhat.com> writes:
> > diff --git a/Makefile b/Makefile
> > index 14c93b3..7e27d51 100644
> > --- a/Makefile
> > +++ b/Makefile
> > @@ -722,8 +722,14 @@ export mod_strip_cmd
> >  ifeq ($(CONFIG_MODULE_SIG),y)
> >  MODSECKEY = ./signing_key.priv
> >  MODPUBKEY = ./signing_key.x509
> > +ifeq ($(KBUILD_EXTMOD),)
> > +SIGNFAIL = false
> > +else
> > +# External builds might not have a signing key, don't break module_install.
> > +SIGNFAIL = true
> > +endif # KBUILD_EXTMOD
> >  export MODPUBKEY
> > -mod_sign_cmd = perl $(srctree)/scripts/sign-file $(MODSECKEY) $(MODPUBKEY)
> > +mod_sign_cmd = $(SIGNFAIL) || perl $(srctree)/scripts/sign-file $(MODSECKEY) $(MODPUBKEY)
> >  else
> >  mod_sign_cmd = true
> >  endif
> 
> Huh?  'true || perl' never runs perl due to short circuiting.

Right.  Why would we even bother running the perl fragment for
out-of-tree modules, when the entire purpose of the patch was to not
sign out-of-tree modules?

> Let's do this instead.  Tested here, please ack.

Sure, will test shortly.

josh
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/