From owner-freebsd-hackers Sun Mar 14 12:16:59 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from niobe.ewox.org (ppp044.uio.no [129.240.240.45]) by hub.freebsd.org (Postfix) with ESMTP id 0E33014F16 for ; Sun, 14 Mar 1999 12:16:45 -0800 (PST) (envelope-from des@niobe.ewox.org) Received: (from des@localhost) by niobe.ewox.org (8.9.3/8.9.1) id SAA85998; Sun, 14 Mar 1999 18:21:10 +0100 (CET) (envelope-from des) To: freebsd-hackers@freebsd.org Subject: ioctl numbers From: Dag-Erling Smorgrav Date: 14 Mar 1999 18:21:09 +0100 Message-ID: <86r9qsf0my.fsf@niobe.ewox.org> Lines: 15 X-Mailer: Gnus v5.5/Emacs 19.34 Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Is there any meaning in the way ioctl numbers are selected? There seem to be several ioctl numbers which have different and totally unrelated meanings for different devices. If I want to add an ioctl to a driver, can I just pick any number which is not currently meaningful to that driver? Specifically, will anybody mind if I define and implement the following ioctls, as documented in tun(4): #define TUNSIFMODE _IOW('t', 93, int) /* set ptp/bcast mode */ #define TUNSLMODE _IOW('t', 94, int) /* set link layer mode */ DES -- Dag-Erling Smorgrav - des@flood.ping.uio.no To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message