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From: Chris Brannon <chris@the-brannons.com>
To: "Speakup is a screen review system for Linux." <speakup@linux-speakup.org>
Subject: Re: ot memory allocation question
References: <41356f9b-e7c3-4522-b960-142abea1cedd@default>
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Date: Fri, 19 Jul 2013 11:44:52 -0700
In-Reply-To: <444275b3-63df-4577-835c-04ebc2830eb3@default> (Don Raikes's
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Don Raikes <don.raikes@oracle.com> writes:

> Chris,
>
> I gave that code segmentthat I sent a try, and it gives me an error in
> the copy_to_user call.  It looks like none of the bytes were copied to
> the userspace buffer.

To be honest, this is way out of my league.  I can give you another
pointer to more reading.  I had to really dig for this one.
http://www.linux.it/kerneldocs/ksys/
Intercepting syscalls isn't (yet) part of my experience, so I can't be
of much further help.

-- Chris