linux-kernel - Re: [PATCH 1/4] module: add syscall to load module from fd

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Message-ID: <87d30o7iy6.fsf@rustcorp.com.au>
Date:	Fri, 12 Oct 2012 08:46:49 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	"H. Peter Anvin" <hpa@...or.com>, mtk.manpages@...il.com
Cc:	Kees Cook <keescook@...omium.org>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	Arnd Bergmann <arnd@...db.de>,
	James Morris <james.l.morris@...cle.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	Eric Paris <eparis@...hat.com>, Jiri Kosina <jkosina@...e.cz>,
	linux-security-module@...r.kernel.org
Subject: Re: [PATCH 1/4] module: add syscall to load module from fd

"H. Peter Anvin" <hpa@...or.com> writes:

> On 10/10/2012 06:03 AM, Michael Kerrisk (man-pages) wrote:
>> Good point. A "whole hog" openat()-style interface is worth thinking about too.
>
> *Although* you could argue that you can always simply open the module
> file first, and that finit_module() is really what we should have had in
> the first place.  Then you don't need the flags since those would come
> from openat().

There's no fundamental reason that modules have to be in a file.  I'm
thinking of compressed modules, or an initrd which simply includes all
the modules it wants to load in one linear file.

Also, --force options manipulate the module before loading (as did the
now-obsolete module rename option).

Cheers,
Rusty.
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