Re: [Xen-devel] [PATCH] Fix locking in tools/hotplug/Linux/locking.sh

[Olaf Hering <olaf@xxxxxxxxx>]

On Mon, Nov 12, Ian Campbell wrote:

> On Fri, 2012-11-09 at 13:56 +0000, Jacek Konieczny wrote:
> > The claim_lock() function would fail in the perl code with:
> > 
> >   Invalid argument at -e line 2.
> > 
> > because the Perl snippet opens for reading the file descriptor, which
> > was earlier opened for write (append).
> 
> Looks plausible to me.
> 
> How does this interact with the 
>         eval "exec $_lockfd<&-"
> which Olaf added in 26079:b3b03536789a ? I suppose close is close and
> <&- and >&- or even <>&- are equivalent?

I did not see the perl error, in what environment did you notice this
error?

Olaf

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