Alloc_sd() fragile?

Corinna Vinschen
Tue Mar 5 04:44:00 GMT 2002

On Tue, Mar 05, 2002 at 11:26:43PM +1100, Robert Collins wrote:
> > -----Original Message-----
> > From: Corinna Vinschen [] 
> > 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 Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                      
Red Hat, Inc.

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