From owner-freebsd-current Sun May 7 16:39:44 2000 Delivered-To: freebsd-current@freebsd.org Received: from mass.cdrom.com (adsl-63-202-176-114.dsl.snfc21.pacbell.net [63.202.176.114]) by hub.freebsd.org (Postfix) with ESMTP id C67F137BE5D for ; Sun, 7 May 2000 16:39:40 -0700 (PDT) (envelope-from msmith@mass.cdrom.com) Received: from mass.cdrom.com (localhost [127.0.0.1]) by mass.cdrom.com (8.9.3/8.9.3) with ESMTP id QAA12373; Sun, 7 May 2000 16:48:36 -0700 (PDT) (envelope-from msmith@mass.cdrom.com) Message-Id: <200005072348.QAA12373@mass.cdrom.com> X-Mailer: exmh version 2.1.1 10/15/1999 To: naddy@mips.inka.de (Christian Weisgerber) Cc: freebsd-current@freebsd.org Subject: Re: Undocumented tape devices in pax(1) In-reply-to: Your message of "08 May 2000 00:53:35 +0200." <8f4s5f$1nfa$1@bigeye.rhein-neckar.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Sun, 07 May 2000 16:48:36 -0700 From: Mike Smith Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > Mike Smith wrote: > > > The 'r' prefix for tape devices is entirely unrelated to the 'r' prefix > > for disk devices. > > I'd like to see some backup for this assertion. Historically, BSD > (up to 4.4) used to have > > mt block device, rewinding > nmt block device, non-rewinding > rmt character device, rewinding > nrmt character device, non-rewinding > > which leaves little room to doubt. Interesting. I've never encountered a tape device to which the buffer cache was applicable, except for the mythical SunOS swap-to-tape story, and the 'r' has always been "rewind" for as long as I can remember. We haven't made non-'r' devices since MAKEDEV rev 1.5. -- \\ Give a man a fish, and you feed him for a day. \\ Mike Smith \\ Tell him he should learn how to fish himself, \\ msmith@freebsd.org \\ and he'll hate you for a lifetime. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message