$0 under ePN

[Gavin Carr]

On Mon, Aug 21, 2006 at 02:03:27AM -0400, sean finney wrote:
> On Mon, Aug 21, 2006 at 02:48:19PM +1000, Gavin Carr wrote:
> > Under ePN $0 contains the full path to the ePN interpreter (e.g.
> > /usr/local/bin/p1.pl) instead of the path to the currently running
> > plugin. This makes it difficult for plugins that want to determine
> > how they were invoked in order to present different personalities.
> >
> > 1. modify nagios to set an environment variable before it invokes 
> >    the plugin (or ePN) containing the full path to the plugin
> >    e.g. NAGIOS_PLUGIN or some such
> 
> i think that within epn is probably the best place to fix this, since
> it's only a problem from within epn.
> 
> i'm guessing that epn doesn't do fork/exec at all, so it would be
> hard to "trick" the plugin by overwriting $0.  perhaps what you
> suggest would be a good approach wrt setting an environment variable
> and doing some automatic setting in the perl plugin module.
> 
> > 2. workaround the issue in p1.pl for ePN only (see e.g. the attached
> > one-line patch to p1.pl)

Any other thoughts on this? Do people agree with Sean that it's 
probably better restricted to ePN than using a more general solution?

Ethan, are you happy to apply that one line patch to p1.pl in my 
original email, if so?


Cheers,
Gavin


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