freebsd stable - Dec 2005 - devfs doesn't set access rights

On my FreeBSD 6-stable (the last build is less then 24hours ago) my
devfs doesn't apply permissions set in /etc/devfs.conf when I attach new
devices. I have to call:
/etc/rc.d/devfs restart
manually for the settings to be applied. This is rather uncomfortable in
some cases (especially with my PDA).

I don't know weather this is the normal behaviour, anyway if it is,
shouldn't devfs be restarted automatically as soon as external devices
(usb, firewire, ir) are attached?

On Tue, Dec 13, 2005 at 05:37:09PM +0100, [LoN]Kamikaze
wrote:
> On my FreeBSD 6-stable (the last build is less then 24hours ago) my
> devfs doesn't apply permissions set in /etc/devfs.conf when I attach
new
> devices. I have to call:
> /etc/rc.d/devfs restart
> manually for the settings to be applied. This is rather uncomfortable in
> some cases (especially with my PDA).
> 
> I don't know weather this is the normal behaviour, anyway if it is,
> shouldn't devfs be restarted automatically as soon as external devices
> (usb, firewire, ir) are attached?
This is normal.  devfs.conf is for boot only, you need devfs.rules for
runtime.  Unfortunatly, the documentation of this fact and the
docuementation of devfs.rules sucks.

-- Brooks

-- 
Any statement of the form "X is the one, true Y" is FALSE.
PGP fingerprint 655D 519C 26A7 82E7 2529  9BF0 5D8E 8BE9 F238 1AD4
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On Tue, Dec 13, 2005 at 05:37:09PM +0100, [LoN]Kamikaze
wrote:
> On my FreeBSD 6-stable (the last build is less then 24hours ago) my
> devfs doesn't apply permissions set in /etc/devfs.conf when I attach
new
> devices. I have to call:
> /etc/rc.d/devfs restart
> manually for the settings to be applied. This is rather uncomfortable in
> some cases (especially with my PDA).
> 
> I don't know weather this is the normal behaviour, anyway if it is,
> shouldn't devfs be restarted automatically as soon as external devices
> (usb, firewire, ir) are attached?
It is the normal behaviour, /etc/rc.d/devfs is a little script that
parse /etc/devfs.conf and according to it and what it find in /dev it
set permissions or create links, it's purely static.

One possibility is to call /etc/rc.d/devfs when a device is attached
in /etc/devd.conf (take a look at devd(8) and devd.conf(5))

For exemple, I have something like this in my /etc/devd.conf :

attach 100 {
    device-name "umass[0-9]+" ;
    action "/bin/sleep 3; /etc/rc.d/devfs restart" ;
};

"attach" : what kind of event
"100" : as usual, for ordering rules
"device-name ..." : the device concerned
"action ... " : what to do, here I use sleep, because action is called
when the attach event arrives, not when the device node is created.

There maybe a better way, but "it works"? ;)

-- 
Burelle Marwan,
Equipe Bases de Donnees - LRI
http://www.cduce.org
(burelle@lri.fr | Marwan.Burelle@ens.fr)
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