linux-kernel - Re: [PATCH] ACPI: Implement overriding of arbitrary ACPI tables via initrd

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sun, 25 Mar 2012 11:25:33 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	"H. Peter Anvin" <hpa@...nel.org>
Cc:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Thomas Renninger <trenn@...e.de>, eric.piel@...mplin-utc.net,
	vojcek@...n.pl, dsdt@...gusch.at, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	Lin Ming <ming.m.lin@...el.com>, lenb@...nel.org,
	robert.moore@...el.com, Al Viro <viro@...iv.linux.org.uk>,
	Harald Hoyer <harald@...hat.com>
Subject: Re: [PATCH] ACPI: Implement overriding of arbitrary ACPI tables via
 initrd

On Sat, Mar 24, 2012 at 03:44:10PM -0700, H. Peter Anvin wrote:
> On 03/24/2012 03:21 PM, H. Peter Anvin wrote:
> > The attached cpio-parsing code compiles to 458 bytes on x86-64 and 476
> > bytes on i386, and that is without any library dependencies at all.
> > Again, it will completely stop at the first compressed data item, so any
> > such kernel objects absolutely will have to be first.  In good Linux
> > tradition, it is also completely untested.
> > 
> > However, given that very reasonable size I would think that this is a
> > reasonable approach.  Anyone who has a better suggestion for the
> > namespace than "kernel/"?
> > 
> 
> Slightly improved version with actually working memcmp()...

[..]

> /*
>  * findcpio.c
>  *
>  * Find a specific cpio member; must precede any compressed content.

Looks simple enough. Btw, there's some cpio handling already done in
<init/initramfs.c> - probably reuse some of the code there...?

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