From owner-freebsd-current Sun May 21 11:26: 2 2000 Delivered-To: freebsd-current@freebsd.org Received: from critter.freebsd.dk (critter.freebsd.dk [212.242.40.131]) by hub.freebsd.org (Postfix) with ESMTP id 877B937B754 for ; Sun, 21 May 2000 11:25:54 -0700 (PDT) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (localhost [127.0.0.1]) by critter.freebsd.dk (8.9.3/8.9.3) with ESMTP id UAA13826; Sun, 21 May 2000 20:24:06 +0200 (CEST) (envelope-from phk@critter.freebsd.dk) To: Mark Murray Cc: Peter Wemm , Doug Rabson , current@FreeBSD.ORG Subject: Re: Major device numbers and mem device redesign In-reply-to: Your message of "Sun, 21 May 2000 16:41:48 +0200." <200005211441.QAA16615@grimreaper.grondar.za> Date: Sun, 21 May 2000 20:24:06 +0200 Message-ID: <13824.958933446@critter.freebsd.dk> From: Poul-Henning Kamp Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In message <200005211441.QAA16615@grimreaper.grondar.za>, Mark Murray writes: >> > > I want to commit a new /dev/random RSN, so I'll be needing a major >> > > device; what is the procedure for getting one? I know how to steal one, >> > > but ISTR that this is not how it is done. >> > >> > Just edit sys/conf/majors and claim the next available number. >> >> You don't need one. You can use the same major/minor numbers. You can >> register multiple cdevsw's per major number with make_dev(); (do NOT >> use cdevsw_add() for this). > >How does this work for all the routines? When you register the >"new" minor number, can you be specifying new read/write/poll/ioctl/etc >routines? > >I ask, as my RNG is a kld, and I want it to be as separate as possible >without getting ridiculous. make_dev() takes a pointer to your struct cdevsw{} for this particular minor. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD coreteam member | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message