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From: Laurent Bercot <ska-supervision@skarnet.org>
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Subject: Re: runsv spinning 100% CPU (was Re: runsv and EAGAIN)
Date: Wed, 18 Feb 2009 01:09:46 +0100
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> Another option would be to have runsv print out an error message like
> 'supervise/control exists but is not a fifo.' and exit with 111.  This
> may be better than forcefully removing a file.

 I think this is the wiser choice. When in doubt, exit with an error
message and let the administrator handle it.
 However, I'd exit 100, not 111, because the problem is structural,
not temporary: it's not that some resource is unavailable, it's that
runsv is used incorrectly (i.e. supervise/ has been tampered with).

-- 
 Laurent