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Date:      Mon, 24 Sep 2001 14:40:53 +0300
From:      Ruslan Ermilov <ru@FreeBSD.ORG>
To:        Jonathan Lemon <jlemon@flugsvamp.com>
Cc:        "Matthew N. Dodd" <winter@jurai.net>, net@FreeBSD.ORG
Subject:   Re: review request.
Message-ID:  <20010924144053.G50028@sunbay.com>
In-Reply-To: <20010923190346.B79251@prism.flugsvamp.com>; from jlemon@flugsvamp.com on Sun, Sep 23, 2001 at 07:03:46PM -0500
References:  <20010923183909.A79251@prism.flugsvamp.com> <Pine.BSF.4.21.0109231951430.3806-100000@sasami.jurai.net> <20010923190346.B79251@prism.flugsvamp.com>

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Seconded.  This should be a KASSERT() if at all.
If that counts.  :-)

On Sun, Sep 23, 2001 at 07:03:46PM -0500, Jonathan Lemon wrote:
> On Sun, Sep 23, 2001 at 07:53:20PM -0400, Matthew N. Dodd wrote:
> > On Sun, 23 Sep 2001, Jonathan Lemon wrote:
> > > On Sun, Sep 23, 2001 at 07:32:18PM -0400, Matthew N. Dodd wrote:
> > > > On Sun, 23 Sep 2001, Jonathan Lemon wrote:
> > > > > >sys/net/if.c and bpf.c have problems with if_detach() and
> > > > > >bpfdetach() when they are called with a struct ifnet that has not had
> > > > > >if_attach() and bpfattach() called on it.  Null pointer reference ->
> > > > > >*boom* etc.
> > > > > 
> > > > > I would say that this is to be expected.  Why is the system calling
> > > > > the detach functions on a device that isn't attached in the first
> > > > > place?
> > > > 
> > > > Driver mistake, but I see no reason why these functions shouldn't handle
> > > > this gracefully.
> > > 
> > > Because all it does is conceal the original error.  Better to catch
> > > the mistake and fix the driver than paper it over.
> > 
> > Right; rather than failing the detach routines will fuss about it so you
> > know exactly how you screwed up.  I don't see this papering anything over.
> 
> Because this is not a normal operational error.  If anything, the
> statement should be a KASSERT(), but I don't really see the need for it.
> -- 
> Jonathan
> 
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-- 
Ruslan Ermilov		Oracle Developer/DBA,
ru@sunbay.com		Sunbay Software AG,
ru@FreeBSD.org		FreeBSD committer,
+380.652.512.251	Simferopol, Ukraine

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