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Date: Wed, 3 Aug 2011 03:31:03 +0400
From: Lev Serebryakov <lev@FreeBSD.org>
Organization: FreeBSD
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Subject: Access rights for specific USB device in /dev? (Was: Ippon UPS over
	USB (ugen1.2: <Cypress Semiconductor> at usbus1)?)
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Hello, Freebsd-usb.
You wrote 3 =E0=E2=E3=F3=F1=F2=E0 2011 =E3., 2:37:09:

>   Now I have another question: devfs(8) uses device types or paths to
> specify access rules for /dev/*, which is bad idea for USB device, as
> it will change path when cable will be re-attached to another port. Is
> here any method to set owner:group of device node by VID/PID or ID
> string or something like this?
 I've tried to add "attach" rule to devd.conf, but here is one
problem: $device-name is "ugen1.2" for example, and "devfs" change
owner and permissions on /dev/ugen1.2, but it is only "symbolic link"
and real device is "/dev/usb/1.2.0" in such case -- as result, owner
and permissions on real device stay unchanged and "blazer_usb" can not
access it again :(

--=20
// Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>