linux-kernel - Re: Purpose of parameter in sysfs binary read

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Wed, 19 Aug 2009 17:05:01 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	"Rick L. Vinyard, Jr." <rvinyard@...nmsu.edu>
Cc:	"Greg KH" <greg@...ah.com>,
	"Linux USB" <linux-usb@...r.kernel.org>,
	"LKML" <linux-kernel@...r.kernel.org>
Subject: Re: Purpose of parameter in sysfs binary read

On Tue, 18 Aug 2009 09:41:56 -0600
"Rick L. Vinyard, Jr." <rvinyard@...nmsu.edu> wrote:

> Greg KH wrote:
> > On Tue, Aug 18, 2009 at 08:55:29AM -0600, Rick L. Vinyard, Jr. wrote:
> > What are you using the binary sysfs attribute for?  It should ONLY be
> > used as a pass-through to and from hardware, with no interpretation by
> > the kernel at all.
> 
> It's for the Logitech G13's game panel image (a simple binary bitmap of
> the pixels).
> 
> It doesn't do any interpretation... just a few checks on the magic number
> and size.

If its a bitmap image why not register the device as a framebuffer ?
--
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/