Thanks for all the help. Unfortunately my professor has been of limited help in the assignment. So I have posted a message on the kernelnewbies list. -----Original Message----- From: Chris Brannon [mailto:chris@xxxxxxxxxxxxxxxx] Sent: Friday, July 19, 2013 11:45 AM To: Speakup is a screen review system for Linux. Subject: Re: ot memory allocation question Don Raikes <don.raikes at 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 _______________________________________________ Speakup mailing list Speakup at linux-speakup.org http://linux-speakup.org/cgi-bin/mailman/listinfo/speakup