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Date: Tue, 5 Mar 2002 13:44:14 +0100
From: Corinna Vinschen <vinschen AT redhat DOT com>
To: cygwin-developers AT cygwin DOT com
Subject: Re: Alloc_sd() fragile?
Message-ID: <20020305134414.V13590@cygbert.vinschen.de>
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On Tue, Mar 05, 2002 at 11:26:43PM +1100, Robert Collins wrote:
> 
> 
> > -----Original Message-----
> > From: Corinna Vinschen [mailto:vinschen AT redhat DOT com] 
> 
> 
> > Just guessing.  One parameter to alloc_sd is a 
> > PSECURITY_DESCRIPTOR called `sd_ret'.  This SD must be 
> > initialized since it's used as in/out parameter.  Take a look 
> > into set_security_attribute() and especially into 
> > set_nt_attribute().  You will see what I mean.
> 
> Thank you!, that was it. It wasn't my bug however :[, as the CreateFile
> is still failing, but the alloc_sd failures are gone (different sd's are
> used).
> 
> *sigh*. Something is tromping on a static class member and invalidating
> the sd. Are sd's ever corrupted by system calls, or can one reuse an sd
> indefinately?

Hmm, in theory they should be reusable unless explicitely used as
in/out parameter... otherwise we should have encountered problems
already since we have those sec_none[_nih] and sec_all[_nih] statics.

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin AT cygwin DOT com
Red Hat, Inc.