From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <shemminger@vyatta.com>
Subject: Re: checkentry function
Date: Tue, 5 Oct 2010 15:01:47 +0900
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To: Nicola Padovano <nicola.padovano@gmail.com>
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On Tue, 5 Oct 2010 07:52:39 +0200
Nicola Padovano <nicola.padovano@gmail.com> wrote:

> > In current kernels, checkentry returns errno values.
> > 0 = okay
> > <0 is error (example -EINVAL).
> 0 = ok? and then you say 0 is error? which one?
> 

Negative (ie < 0) is used for error numbers. This is confusing
because in older kernels the checkentry returned a bool which
is defined as 1 okay and 0 for error.