/dev/ulpt0 -- How is it created?

[Devin Teske]

> -----Original Message-----
> From: owner-freebsd-questions at freebsd.org [mailto:owner-freebsd-
> questions at freebsd.org] On Behalf Of Ronald F. Guilmette
> Sent: Wednesday, February 08, 2012 1:58 PM
> To: freebsd-questions at freebsd.org
> Subject: /dev/ulpt0 -- How is it created?
> 
> 
> It would appear that the device node /dev/ulpt0 gets (re-)created every
> time I plug my USB printer back in.
> 
> Could somebody please kindly tell me what the exact mechanism is that
> causes this device node to be (re-)created upon such events?
> 
> I am rather hoping that whatever that mechanism is, that I can diddle
> it somehow so that every time /dev/ulpt0 gets created, it will be
> created with perms set to 0666.
> 

This should do the trick (as root):

mkdir -p /etc/devd
cd /etc/devd
touch ulpt.conf
cat >> ulpt.conf << EOF
notify 100 {
	match "system"    "DEVFS";
	match "subsystem" "CDEV";
	match "cdev"      "ulpt[0-9]";
	match "type"      "CREATE";

	action "/bin/chmod 666 /dev/$cdev";
};
EOF
service devd restart
-- 
Devin


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