mknod device numbers

v5 and v6 UNIX seem to have very few device files in /dev as distributed. Inparticular, I need to set up the device entries for my RK05 drives, /dev/rk0 and /dev/rrk0 etc. Does anyone know the major and minor numbers offhand, or know the source well enough to know where to find them? I've grepped the source to no avail ... Cheers, Bob -- ---------------------------------------------------------------------------- Robert Manners Osney Laboratory rjm(a)swift.eng.ox.ac.uk Dept of Engineering Science University of Oxford 01865 246561 x 162 Try: http://swift.eng.ox.ac.uk Linux - the only choice "I'd rather stay a child and keep my self respect, if being an adult means being like you" Jello Biafra ---------------------------------------------------------------------------- Received: from Norway.EU.net by minnie.cs.adfa.oz.au (8.6.8/8.3) with SMTP id DAA28676; Thu, 16 Nov 1995 03:44:26 +1100 Received: by Norway.EU.net with UUCP id AA08831 (5.65c/IDA-1.4.4/EUnet/NO for oldunix(a)minnie.cs.adfa.oz.au); Wed, 15 Nov 1995 17:44:06 +0100 Received: (from tih@localhost) by barsoom.Hamartun.Priv.NO (8.6.12/8.6.12) id QAA13129; Wed, 15 Nov 1995 16:35:24 +0100 Date: Wed, 15 Nov 1995 16:35:23 +0100 (MET) From: Tom I Helbekkmo <tih(a)Hamartun.Priv.NO> To: Bob Manners <rjm(a)swift.eng.ox.ac.uk> Cc: OldUnix MailingList <oldunix(a)minnie.cs.adfa.oz.au> Subject: Re: mknod device numbers In-Reply-To: <m0tFeu2-00000EC(a)swift.eng.ox.ac.uk> Message-Id: <Pine.NEB.3.91.951115163146.12873C-100000(a)barsoom.Hamartun.Priv.NO> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII On Wed, 15 Nov 1995, Bob Manners wrote: This works for me, with v6: # chdir /dev # ls -l total 0 crw--w--w- 2 root 0, 0 Nov 7 21:14 console crw-rw-r-- 1 bin 8, 1 May 14 1975 kmem crw-rw-r-- 1 bin 8, 0 May 14 1975 mem crw-rw-rw- 1 bin 8, 2 May 14 1975 null brw-rw-rw- 1 root 0, 0 Oct 10 1975 rk0 brw-rw-rw- 1 root 0, 1 Oct 10 1975 rk1 brw-rw-rw- 1 root 0, 2 Oct 10 1975 rk2 brw-rw-rw- 1 root 0, 3 Oct 10 1975 rk3 crw-rw-rw- 1 root 9, 0 Nov 7 01:19 rrk0 crw-rw-rw- 1 root 9, 1 Nov 7 01:19 rrk1 crw-rw-rw- 1 root 9, 2 Nov 7 01:19 rrk2 crw-rw-rw- 1 root 9, 3 Nov 7 01:19 rrk3 crw--w--w- 2 root 0, 0 Nov 7 21:14 tty8 Protection could be better, of course. :-) -tih -- Tom Ivar Helbekkmo tih(a)Hamartun.Priv.NO Received: from fingers.acs.uwlax.edu by minnie.cs.adfa.oz.au (8.6.8/8.3) with SMTP id EAA28815; Thu, 16 Nov 1995 04:22:44 +1100 Received: by fingers.acs.uwlax.edu; id AA02396; NX5.67d/42; Wed, 15 Nov 95 11:22:22 -0600 Date: Wed, 15 Nov 95 11:22:22 -0600 From: Milo Velimirovic 31 Wing 785-8030 <milov(a)fingers.acs.uwlax.edu> Message-Id: <9511151722.AA02396(a)fingers.acs.uwlax.edu> Received: by NeXT.Mailer (1.100.RR) Received: by NeXT Mailer (1.100.RR) To: Tom I Helbekkmo <tih(a)hamartun.priv.no> Subject: Re: mknod device numbers Cc: OldUnix MailingList <oldunix(a)minnie.cs.adfa.oz.au> Reply-To: Milo.Velimirovic(a)uwlax.edu Hi, All of this is very installation specific. The major/minor numbers in the device inodes need to correspond exactly to the entries in the devtab structure in the kernel. This is probably something that can be divined by running nm on the kernel, /unix ? (All this is from memory, my annotated V6 kernel listing is buried at home right now.) But, I'd be surprised to see a V6 distribution that didn't have the rk drivers built in. Another thing to watch out for is the rk driver, er, device names/numbers that interleaved a file system across multiple drives. BTW, is there anywhere one can get a "legal license" to run V6, V7, 2.XBSD on my pdp11/34's and 11/44? --Milo --- Milo Velimirovic <Milo.Velimirovic(a)uwlax.edu> Unix Computer Network Administrator (608) 785-8030 Information Technology, Operations and Networking University of Wisconsin - La Crosse La Crosse, Wisconsin 54601 USA 43 48 05 N 91 14 22 W Begin forwarded message: > Date: Wed, 15 Nov 1995 16:35:23 +0100 (MET) > From: Tom I Helbekkmo <tih(a)Hamartun.Priv.NO> > To: Bob Manners <rjm(a)swift.eng.ox.ac.uk> > Cc: OldUnix MailingList <oldunix(a)minnie.cs.adfa.oz.au> > Subject: Re: mknod device numbers > In-Reply-To: <m0tFeu2-00000EC(a)swift.eng.ox.ac.uk> > Mime-Version: 1.0 > Content-Type: TEXT/PLAIN; charset=US-ASCII > On Wed, 15 Nov 1995, Bob Manners wrote: > > v5 and v6 UNIX seem to have very few device files in /dev as > > distributed. Inparticular, I need to set up the device entries for my > > RK05 drives, /dev/rk0 and /dev/rrk0 etc. > This works for me, with v6: > # chdir /dev > # ls -l > total 0 > crw--w--w- 2 root 0, 0 Nov 7 21:14 console > crw-rw-r-- 1 bin 8, 1 May 14 1975 kmem > crw-rw-r-- 1 bin 8, 0 May 14 1975 mem > crw-rw-rw- 1 bin 8, 2 May 14 1975 null > brw-rw-rw- 1 root 0, 0 Oct 10 1975 rk0 > brw-rw-rw- 1 root 0, 1 Oct 10 1975 rk1 > brw-rw-rw- 1 root 0, 2 Oct 10 1975 rk2 > brw-rw-rw- 1 root 0, 3 Oct 10 1975 rk3 > crw-rw-rw- 1 root 9, 0 Nov 7 01:19 rrk0 > crw-rw-rw- 1 root 9, 1 Nov 7 01:19 rrk1 > crw-rw-rw- 1 root 9, 2 Nov 7 01:19 rrk2 > crw-rw-rw- 1 root 9, 3 Nov 7 01:19 rrk3 > crw--w--w- 2 root 0, 0 Nov 7 21:14 tty8 > Protection could be better, of course. :-) > Tom Ivar Helbekkmo > tih(a)Hamartun.Priv.NO Received: from Norway.EU.net by minnie.cs.adfa.oz.au (8.6.8/8.3) with SMTP id IAA29309; Thu, 16 Nov 1995 08:03:54 +1059 Received: by Norway.EU.net with UUCP id AA29747 (5.65c/IDA-1.4.4/EUnet/NO for oldunix(a)minnie.cs.adfa.oz.au); Wed, 15 Nov 1995 22:03:25 +0100 Received: (from tih@localhost) by barsoom.Hamartun.Priv.NO (8.6.12/8.6.12) id VAA14351; Wed, 15 Nov 1995 21:58:00 +0100 Date: Wed, 15 Nov 1995 21:57:59 +0100 (MET) From: Tom I Helbekkmo <tih(a)Hamartun.Priv.NO> To: Milo.Velimirovic(a)uwlax.edu Cc: OldUnix MailingList <oldunix(a)minnie.cs.adfa.oz.au> Subject: Re: mknod device numbers In-Reply-To: <9511151722.AA02396(a)fingers.acs.uwlax.edu> Message-Id: <Pine.NEB.3.91.951115213628.14251A-100000(a)barsoom.Hamartun.Priv.NO> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII On Wed, 15 Nov 1995, Milo Velimirovic 31 Wing 785-8030 wrote: True enough. The example I gave was correct for the V6 distribution that Ken Wellsch donated to the PUPS archive, and in which the file /usr/sys/conf/c.c (generated by 'mkconf' in the same directory) ends up with the following for the default "rkunix" with rk, tm and tc drivers enabled, as per the script /usr/sys/run: int (*bdevsw[])() { &nulldev, &nulldev, &rkstrategy, &rktab, /* rk */ &nodev, &nodev, &nodev, 0, /* rp */ &nodev, &nodev, &nodev, 0, /* rf */ &tmopen, &tmclose, &tmstrategy, &tmtab, /* tm */ &nulldev, &tcclose, &tcstrategy, &tctab, /* tc */ &nodev, &nodev, &nodev, 0, /* hs */ &nodev, &nodev, &nodev, 0, /* hp */ &nodev, &nodev, &nodev, 0, /* ht */ 0 }; int (*cdevsw[])() { &klopen, &klclose, &klread, &klwrite, &klsgtty, /* console */ &nodev, &nodev, &nodev, &nodev, &nodev, /* pc */ &nodev, &nodev, &nodev, &nodev, &nodev, /* lp */ &nodev, &nodev, &nodev, &nodev, &nodev, /* dc */ &nodev, &nodev, &nodev, &nodev, &nodev, /* dh */ &nodev, &nodev, &nodev, &nodev, &nodev, /* dp */ &nodev, &nodev, &nodev, &nodev, &nodev, /* dj */ &nodev, &nodev, &nodev, &nodev, &nodev, /* dn */ &nulldev, &nulldev, &mmread, &mmwrite, &nodev, /* mem */ &nulldev, &nulldev, &rkread, &rkwrite, &nodev, /* rk */ &nodev, &nodev, &nodev, &nodev, &nodev, /* rf */ &nodev, &nodev, &nodev, &nodev, &nodev, /* rp */ &tmopen, &tmclose, &tmread, &tmwrite, &nodev, /* tm */ &nodev, &nodev, &nodev, &nodev, &nodev, /* hs */ &nodev, &nodev, &nodev, &nodev, &nodev, /* hp */ &nodev, &nodev, &nodev, &nodev, &nodev, /* ht */ 0 }; The major device numbers are the offsets (counting from 0) in these arrays, so rk has major 0 for the block device, 9 for the character device. I would assume that this holds for V6 in general -- if one were to add device drivers, one would surely extend these arrays at their ends, not insert anything into them... :-) -tih -- Tom Ivar Helbekkmo tih(a)Hamartun.Priv.NO