Subject: Re: creating new ioctls
To: Bill Studenmund <>
From: Michael Graff <>
List: tech-kern
Date: 08/05/1997 21:25:20 (Bill Studenmund) writes:

> Exactly. Except that as all the characters are case sensitive, the
> 'u' hierarchy is clearly wide open. As I've not seen anything use
> upper-case letters, I bet 'U' is also open. :-)

The audio system uses A and M, the LKM system uses K, the SCSI stuff
uses S and Q, and the "vs" driver (whatever that is) uses V.

Oh, and the /dev/random thing I'm hacking on uses R.  :)