Date: Wed, 7 Dec 2011 11:21:58 -0500 From: Rod Person <rodperson@rodperson.com> To: Mike Clarke <jmc-freebsd2@milibyte.co.uk> Cc: freebsd-questions@freebsd.org, "Zane C. B-H." <v.velox@vvelox.net> Subject: Re: umass to /dev/da* mapping Message-ID: <20111207112158.00000c99@unknown> In-Reply-To: <201112071607.09728.jmc-freebsd2@milibyte.co.uk> References: <201112051708.16072.jmc-freebsd2@milibyte.co.uk> <alpine.BSF.2.00.1112070834530.68831@wonkity.com> <20111207095651.3688de01@vixen42.vulpes.vvelox.net> <201112071607.09728.jmc-freebsd2@milibyte.co.uk>
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On Wed, 7 Dec 2011 16:07:09 +0000
Mike Clarke <jmc-freebsd2@milibyte.co.uk> wrote:
> On Wednesday 07 December 2011, Zane C. B-H. wrote:
>
> > On Wed, 7 Dec 2011 08:39:30 -0700 (MST)
> >
> > Warren Block <wblock@wonkity.com> wrote:
> > > On Wed, 7 Dec 2011, Zane C. B-H. wrote:
> > > > Still you will want to investigate what I've mentioned. It will
> > > > drastically simplify permission stuff as well as make automatic.
> > > > The devfs stuff is just not boottime only, but will be applied
> > > > to any new device added etc post boot.
> > >
> > > Are you sure of that? Seems like devfs permissions are only
> > > applied when devfs(8) apply/applyset commands are run, directly or
> > > through /etc/rc.d/devfs.
> >
> > Yeah, I am sure of that. It is what I have setup here.
> >
> > /etc/devfs.conf - This one only affects boot time stuff.
> >
> > /dec/devfs.rules - This one contains the rules will be applied
> > during and post boot. It will also require you to specify which to
> > use in "/etc/rc.conf" as this file can contain multiple rule sets.
>
> But can I use that to dynamically set up my link to the new device
> when the memory stick is inserted?
>
Use devd.conf to do that. This is what I do.
#Mount and usb device that is plugged in and creates a da device
notify 20{
match "system" "DEVFS";
match "type" "CREATE";
match "cdev" "da[0-9]*";
action "/usr/local/etc/rc.d/usb_device_action mount
'/dev/$cdev'"; };
notify 20{
match "system" "DEVFS";
match "type" "DESTROY";
match "cdev" "da[0-9]*";
action "/usr/local/etc/rc.d/usb_device_action umount
'/dev/$cdev'"; };
The action line is what you want it to do, in my case I have this
script I wrote that reads the device label, if it finds the label the
it will create a mount point with that label name, If it can't find a
label it creates a mount point using the device name.
--
Rod Person http://www.rodperson.com rodperson@rodperson.com
"Silence is a fence around wisdom"
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