[libvirt] [PATCH 5/6] virtlockd: make re-exec more robust

[Daniel P. Berrange]

On Mon, Dec 09, 2013 at 05:23:29PM +1100, Michael Chapman wrote:
> virtlockd's argv[0] may not contain a full path to the binary, however
> it should contain something that can be looked up in the PATH. Use
> execvp() to do path lookup when re-executing ourselves.
> 
> After re-execution, we must not attempt to daemonize again. It's not
> only unnecessary, but it also means we end up with the wrong PID and so
> we can't validate the state file.
> 
> Instead, build a new argv for the new program that does not include
> --daemon.

It would seem to be simpler to instead change the main() method
so that --daemon is ignored when re-exec'ing.

Daniel
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