Re: RUN

[Kay Sievers <kay.sievers@vrfy.org>]

On Tue, 2007-07-10 at 20:59 -0400, Richard Michael wrote:
> > Today you can have only one RUN key, it will change some day, but I
> > never got to finish the smarter rule parsing which will allow any
> > number of keys in a rule.
> > 
> > You need to do:
> >    RUN+="/bin/sh -c '/program1; /program2'"
> > for now.
> 
> I have misunderstood either the poster's question or the paragraph in
> "man udev" discussing the RUN key:
> 
> ----excerpt----
> RUN
> 
>   Add a program to the list of programs to be executed for a specific
> device. This can only be used for very short running tasks.  Running an
> event process for a long period of time may block all further events for
> this or a dependent device. Long running tasks need to be immediately
> detached from the event process itself.
> 
> ----excerpt----
> 
> For example, this works:
> 
> SUBSYSTEM="*", RUN+="/root/udev-catch-remove"
> ENV{DEVNAME}="/dev/foobar", RUN+="/path/to/prog"
> 
> Is this only working because the match keys are different?

These are two rules with independent RUN keys, right?

The first on runs for _every_ event as the SUBSYSTEM match doesn't do
anything. The second may run when the env matches, but $DEVNAME is
usually not available at the time of rule processing. You can have any
number of rules with _one_ RUN key per rule and they will all be
executed.

The question was how to run two programs from a _single_ rule. The
obvious solution would be to specify two RUN keys, but that doesn't work
with todays in-memory rule presentation. It will change when I find the
time to work on that.

Thanks,
Kay


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