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Date: Wed, 19 Jan 2005 11:32:18 +0100
From: Christoph Hellwig <hch@lst.de>
To: Thomas Viehmann <tv@beamnet.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: permissions of /proc/tty/driver
Message-ID: <20050119103218.GC9793@lst.de>
References: <41E80535.1060309@beamnet.de> <20050116120436.GA13906@lst.de> <41EA688A.6050305@beamnet.de>
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On Sun, Jan 16, 2005 at 02:13:46PM +0100, Thomas Viehmann wrote:
> Hi.
> 
> Christoph Hellwig wrote:
> >Counter-question:  What information is available in
> >/proc/tty/driver/usbserial but not in sysfs?
> 
> Thanks for this hint, is there a way of finding vendor and product ids 
> of all ttyUSB devices better than
> looking for /sys/bus/usb/devices/*-*/*-*:*/ttyUSB* and then ckecking the 
> obvious files in the grandparent directory?

I think that's the obvious way.  Using libsysfs will make your life much
easier when doing that, though.