From mboxrd@z Thu Jan  1 00:00:00 1970
From: Josua Dietze <digidietze@draisberghof.de>
Date: Tue, 21 Dec 2010 18:47:27 +0000
Subject: Udev rule $attr substitution
Message-Id: <4D10F63F.9030005@draisberghof.de>
List-Id: <linux-hotplug.vger.kernel.org>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: linux-hotplug@vger.kernel.org

Hi, everyone!

I'm scratching my head over this:

Rule line:
KERNEL="ttyUSB*" RUN+="myprog %p %s{idVendor} %s{idProduct}"

%p expands to something like:
/devices/pci0000:00/0000:00:1d.7/usb1/1-5/1-5:1.2/ttyUSB2/tty/ttyUSB2

But the %s (or $attr) format string will not be substituted with anything when 
using udev version 157. The same rule works fine with version 125.

When doing the attribute walk with "udevadm info", the attributes are of course 
found in the parent chain.

Did I miss something?