Re: Support for multiple usermaps in hotplug usb.agent

["Maksim (Max) Krasnyanskiy" <maxk@qualcomm.com>]

At 09:55 PM 7/21/2002 -0700, David Brownell wrote:
>Maksim (Max) Krasnyanskiy wrote:
>>>Why do you rebuild the usermap database. Would it be easier to just find
>>>a group of usermap's via a glob and then parse all of them each hotplug,
>>>like Maksim's patch ?
>>>
>>>The only advantage I can think of rebuilding the database, is you can
>>>better control conflicts, but that's a tricky situation anyway.
>>They don't resolve any conflicts. update.usermap is pretty much just
>>         for map in $(all installed maps); do
>>                 cat $map >> /etc/hotplug/usb.usermap
>>         done
>
>So at a technical level, ignoring the "where does stuff install" issue
>(we want just one answer, the path doesn't much matter) the only real
>difference is who does the match/catenate, and when.
>
>In fact, if Max's patch had scanned /usr/lib/hotplug/*/usb.usermap,
>then there'd be compatibility with Debian, and Debian could get rid
>of the "update.usermap" script.  Yes ?
I guess so.  It should work for them.
btw if we simply kept support for the central usb.usermap it will work fine 
with current
update-usb.usermap.

>How did /usr/lib/hotplug get settled on?  There's also some code using
>/usr/share/usb (/usr/lib is wrong for sharable stuff ...) for firmware
>downloading, and I see that RedHat has /usr/share/hwdata/usb.ids ... that
>is, not using /usr/share/usb either.  Does the Linux Filesystem standard
>have anything useful to say about this?  Shouldn't it?
>
>In general I tend to think avoiding extra commands ("update.usermap")
>is a good thing, but then so is avoiding wildcards in shell scripts.
>In this case I'd prefer the latter, I must say.
I don't see how wildcards would be a problem (assuming they're used 
appropriately).
Anyway in this case update.usermap is extra commands and shell wildcards ;)
(update.usermap uses shell wildcards).

Max



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