From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Razza" <rjames31@btopenworld.com>
Date: Wed, 02 May 2007 12:10:31 +0000
Subject: RE: udev problem DVB-S/T Cards
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To: linux-hotplug@vger.kernel.org

Bryan Kadzban wrote on 02 May 2007 12:08:
> Razza wrote:
> > I am specifically interested in what 'K' is at various points in this
> > rule -
> >
> >
> > BUS="pci", ID="0000:01:06.0", SYSFS{device}="0x7146",
> > SYSFS{vendor}="0x1131", PROGRAM="/bin/sh -c 'K=%k; K=$${K#dvb};
> > printf dvb/adapter5/%%s $${K%%%%.*} $${K#*.}'", NAME="%c",
> MODE="0660"
> 
> Well, it starts out at %k (the kernel NAME, which should be available
> via udevinfo).  After that, you should be able to set K=<that name> in
> a normal shell, and then start running subsequent commands from the
> shell, while echoing $K from time to time.
> 
> (However, note that udev requires double dollar signs and double
> percent signs, so if you paste the various echos and printfs into a
> shell, you'll have to un-escape those characters.  I.e., %%s should be
> run through the shell as %s, and %%%% should be turned into %%.)
> 
> And actually, K only changes once (when it's set to ${K#dvb} just
> before the printf.  The rest of that rule is just formatting the
> output.
> 
> (Oh, and you hopefully already know this from the documentation, but
> NAME="%c" sets NAME to the output of the PROGRAM.)
Ah!
So a udevinfo yields kernels names such as - KERNEL="dvb1.frontend0"
So I guess I need to change the K=$${K#dvb} element to only return the
correct nodes so I end up with a correctly formatted tree?


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