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From: Richard Michael <rmichael-hotplug@edgeofthenet.org>
To: linux-hotplug@vger.kernel.org
Subject: Re: ENV{DEVNAME} in remove rule?
Date: Tue, 03 Jul 2007 17:52:38 +0000	[thread overview]
Message-ID: <20070703175238.GI27375@server> (raw)
In-Reply-To: <20070703171658.GB27375@server>

> DEVNAME is set by udev before calling RUN programs. It is not available when 
> rules are being processed. 

Where are these details documented?  I've been writing lots of test
rules to try and figure this out, but I'd prefer to just read something.

> In general I am not sure it is wise to match on DEVNAME It can be changed at 
> any time by installing different rule(s). Better to match on device 
> properties.

I'd really prefer to match PHYSDEVPATH, because what I actually care
about is identifying the USB socket which the device is attached
(especially for the "add" rule.. the "remove" just uses the device name
as I set it when it was added).  However, PHYSDEVPATH has been
deprecated.

I want to create block devices (not symlinks) for the specific ports of
a USB (or firewire) controller, and take actions depending on which
socket of the controller has been used.

Thanks,
Richard

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  parent reply	other threads:[~2007-07-03 17:52 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-03 17:16 ENV{DEVNAME} in remove rule? Richard Michael
2007-07-03 17:45 ` Andrey Borzenkov
2007-07-03 17:52 ` Richard Michael [this message]
2007-07-03 18:06 ` Andrey Borzenkov
2007-07-03 18:17 ` Richard Michael
2007-07-03 19:44 ` Andrey Borzenkov

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