Re: The Next Generation

[Chris Larson <kergoth@handhelds.org>]

* Kay Sievers (kay.sievers@vrfy.org) wrote:
> On Mon, 2005-02-28 at 22:11 +0300, Roman Kagan wrote:
> >On Mon, Feb 28, 2005 at 07:41:41PM +0100, Kay Sievers wrote:
> >> I've changes the HOTPLUG key to be able to read a whole subdirectory
> >> with a wildcard instead of only one file. The following three rules will
> >> emulate the dev.d/ directory handling we currently have compiled in:
> >> 
> >>   HOTPLUG="/etc/dev.d/%D/*.dev"
> >>   HOTPLUG="/etc/dev.d/%S/*.dev"
> >>   HOTPLUG="/etc/dev.d/default/*.dev"
> >
> >Given that this is a compatibility stuff, can't it be handled
> >externally, without bloating udev?  E.g.
> >
> >HOTPLUG="/usr/bin/run-parts /etc/dev.d/default"
> 
> >or even simply
> >
> >HOTPLUG="sh -c 'for f in /etc/dev.d/default/*.dev; do [ -x \$f ] && \$f; done'"
> 
> Sure, something like that should work too. It was easy to do this inside
> of udev, don't know what's better here. The internal one can sort out
> doubles, from all all the keys, but that isn't a required feature...
> 
> >Another suggestion is of a syntactic sugar kind: would it be too hard to
> >implement key substitution in actions with a generic syntax, rather than
> >adding %-conversion specifier for each possible substitution, e.g.
> >
> >HOTPLUG="foo $SUBSYSTEM $SYSFS{bar} $ENV{baz}"
> 
> No, that is not really hard. I thought about something like this too, if
> we are running out of nice characters. :)
> 
> It is nicer to read, yes. But renaming some of the keys would be nice
> too, like:
>   ADD_SYMLINK, ADD_HOTPLUG, MATCH_ACTION, SET_GROUP, SET_MODE, SET_NAME
> 
> so the key can tell you what it does in reality. Today you need to know
> that KERNEL= is a match instruction, SYMLINK= will add something to a
> list and GROUP= will override any value. Sometimes, we should do all
> that. :)

I really like that idea.  Far more intuitive.
--
Chris Larson - kergoth at handhelds dot org
Linux Software Systems Engineer - clarson at ti dot com
Core Developer/Architect - BitBake, OpenEmbedded, OpenZaurus


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