From owner-freebsd-hackers Tue Nov 26 00:23:47 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id AAA24396 for hackers-outgoing; Tue, 26 Nov 1996 00:23:47 -0800 (PST) Received: from irz301.inf.tu-dresden.de (irz301.inf.tu-dresden.de [141.76.1.11]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id AAA24380 for ; Tue, 26 Nov 1996 00:23:35 -0800 (PST) Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by irz301.inf.tu-dresden.de (8.6.12/8.6.12-s1) with ESMTP id JAA15999; Tue, 26 Nov 1996 09:22:20 +0100 Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id JAA02129; Tue, 26 Nov 1996 09:22:20 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.8.2/8.6.9) id JAA09865; Tue, 26 Nov 1996 09:04:00 +0100 (MET) From: J Wunsch Message-Id: <199611260804.JAA09865@uriah.heep.sax.de> Subject: Re: Device Driver Writing. To: freebsd-hackers@freebsd.org (FreeBSD hackers) Date: Tue, 26 Nov 1996 09:04:00 +0100 (MET) Cc: ballanty@cs.sfu.ca (Rob Ballantyne) Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <329A2A46.5CC@cs.sfu.ca> from Rob Ballantyne at "Nov 25, 96 03:22:46 pm" X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E X-Mailer: ELM [version 2.4ME+ PL17 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk As Rob Ballantyne wrote: > I hope this isn't too much of an intrusion. I was wondering if > there is a reasonable source of information about writing device > drivers for FreeBSD? I have a couple of Device Driver books but > they tend to be about SCO or other SysV style UNIXs. Is there > documentation for the FreeBSD kernel's internal system calls (like > what would occur in section 9 of the man pages)? There is a section 9 now, but sparsely populated still. There's the 4.4BSD ``bible'' (The 4.4BSD Operating System. Design and Implementation. By McKusick et al., published at Addison-Wesley.) ``All documentation files usually end up in .c.'' (unknown source) -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)