From owner-freebsd-questions@FreeBSD.ORG  Sun Oct 16 06:23:20 2005
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
X-Original-To: freebsd-questions@freebsd.org
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id D682A16A41F
	for <freebsd-questions@freebsd.org>;
	Sun, 16 Oct 2005 06:23:20 +0000 (GMT)
	(envelope-from malcolm.kay@internode.on.net)
Received: from smtp3.adl2.internode.on.net (smtp3.adl2.internode.on.net
	[203.16.214.203])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 4907D43D46
	for <freebsd-questions@freebsd.org>;
	Sun, 16 Oct 2005 06:23:20 +0000 (GMT)
	(envelope-from malcolm.kay@internode.on.net)
Received: from alpha.home (ppp212-107.lns1.adl2.internode.on.net
	[203.122.212.107])
	by smtp3.adl2.internode.on.net (8.12.9/8.12.6) with ESMTP id
	j9G6NIcJ034213 for <freebsd-questions@freebsd.org>;
	Sun, 16 Oct 2005 15:53:19 +0930 (CST)
	(envelope-from malcolm.kay@internode.on.net)
From: Malcolm Kay <malcolm.kay@internode.on.net>
Organization: at home
To: freebsd-questions@freebsd.org
Date: Sun, 16 Oct 2005 15:54:23 +0930
User-Agent: KMail/1.8
MIME-Version: 1.0
Content-Type: text/plain;
  charset="us-ascii"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
Message-Id: <200510161554.23406.malcolm.kay@internode.on.net>
Subject: Flash drive device name difficulties.
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 16 Oct 2005 06:23:21 -0000

I am running FreeBSD 5.4 RELEASE.
I recently aquired a 256M USB flash drive
which the system recognises when plugged in;
and I can mount and use it -- all working well.

But now I'd like to make it available to a user
or group of users through mtools. To do this I need
to change the permissions on /dev/da0s1 where the 
flash drive msdos partition appears. This I can make happen 
automatically using /etc/usbd.conf by adding the lines:

device "RunDisk"
        vendor  0x0ef5
        product 0x2366       
        attach "sleep 1; /bin/chmod g+rw /dev/da[0-9]*"

giving members of the operator group access.
But this changes permissions on all "da[0-9]" devices.
I know the man pages suggest ${DEVICENAME} to obtain the 
particular device but this doesn't work here because usbd
sees the device as "umass0" which doesn't appear in /dev/*.

For the moment this is the only device I have appearing 
in the "da*" group so the problem is not immediate/urgent.
But is there some way I can extract the specific "da*" device
name to use in the attach statement or is there some way I can 
make the flash drive always pop up at a specific da name.

I've also taken a look at devd.conf but the documentation here 
seems somewhat sparse.

You consideration is appreciated,

Malcolm Kay