Re: [udev] support arguments in callout exec

[Greg KH <greg@kroah.com>]

On Thu, Nov 20, 2003 at 09:14:43PM +0100, Arnd Bergmann wrote:
> > > To take that even further, do you think it might be a good idea to
> > > preprocess the string in the same way as the NAME= argument, allowing
> > > e.g. PROGRAM="/bin/devname %b %M:%m" ?
> >
> > Hm, good idea.
> >
> > Someone else also proposed adding a number modifier to the %b field to
> > pick out a specific character from a bus id.  Anyone have any thoughts
> > about this?  Personally, I think it will be a bit hard to handle bus ids
> > that are not fixed widths all the time, but might be handy to try to
> > implement a devfs-like udev config file.
> 
> When we allow %b in PROGRAM= and find a good way to use the output of
> the program as the device name, there won't be any need for such a hack,
> as it can better be done in an external script. Getting it right in
> udev would be too complicated IMHO (both usage and implementation).

Good point, I'll try to work on adding that this weekend if I get a
break from changing diapers...

greg k-h


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