linux-kernel - Re: [RFC] module: signature infrastructure

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Message-ID: <19214.1346799098@warthog.procyon.org.uk>
Date:	Tue, 04 Sep 2012 23:51:38 +0100
From:	David Howells <dhowells@...hat.com>
To:	Lucas De Marchi <lucas.de.marchi@...il.com>
Cc:	dhowells@...hat.com, Rusty Russell <rusty@...tcorp.com.au>,
	dmitry.kasatkin@...el.com, zohar@...ux.vnet.ibm.com,
	jmorris@...ei.org, keyrings@...ux-nfs.org,
	linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC] module: signature infrastructure

Lucas De Marchi <lucas.de.marchi@...il.com> wrote:

> Or let the magic string as the last thing in the module and store the
> signature length, too. In this case no scanning is needed

Indeed.  This is the better way.

The main problem is rendering the length from a shell script.  It's trivial to
do as ASCII (there's a printf program), but a pain to render to binary.  I'm
sure it can be done with perl or python without the need to compile anything.

David
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