Subject: Re: oddity and extra buttons on USB keyboard
To: Lennart Augustsson <firstname.lastname@example.org>
From: Steven M. Bellovin <email@example.com>
Date: 06/12/2005 20:23:59
In message <42ACAC2E.firstname.lastname@example.org>, Lennart Augustsson writes:
>Steven M. Bellovin wrote:
>> (Aside: it would be nice if there were a way to refer to usbhid devices
>> by name instead of number, since presumably what gets recognized as
>> uhid0 depends on the order in which the ports to which they're
>> connected are scanned.)
>But how would you refer to it by name? There might be several devices
>of the same kind connected. But it's a bit annoying as is, I agree.
>I think usbhidaction should be changed so it could just try and handle
>all available uhid devices.
>If you want a specific uhid number for your device you can always
>pin it down by locators (either vendor&product or port number).
Good question, since there doesn't seem to be a serial number.
I think that I'd be inclined to have a section name in the config file
that matched against various parts of the device identifier. Perhaps
it could be a tuple of vendor name, product ID, and port/hub number,
where it did a best-match or a first-match.
I see that uhid(4) speaks of a "reportid". What is that? Does it
apply to devices that are plugged and unplugged?
--Steven M. Bellovin, http://www.cs.columbia.edu/~smb