Mailing-List: contact cygwin-developers-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-developers-subscribe AT cygwin DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin-developers/>
List-Post: <mailto:cygwin-developers AT cygwin DOT com>
List-Help: <mailto:cygwin-developers-help AT cygwin DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender: cygwin-developers-owner AT cygwin DOT com
Delivered-To: mailing list cygwin-developers AT cygwin DOT com
content-class: urn:content-classes:message
Subject: RE: Alloc_sd() fragile?
MIME-Version: 1.0
Content-Type: text/plain;
	charset="US-ASCII"
Date: Tue, 5 Mar 2002 23:26:43 +1100
X-MimeOLE: Produced By Microsoft Exchange V6.0.5762.3
Message-ID: <FC169E059D1A0442A04C40F86D9BA76008AB1C@itdomain003.itdomain.net.au>
X-MS-Has-Attach: 
X-MS-TNEF-Correlator: 
Thread-Topic: Alloc_sd() fragile?
Thread-Index: AcHEMgfU7/974SGrQQC4LvH9YGWuOwADrptA
From: "Robert Collins" <robert DOT collins AT itdomain DOT com DOT au>
To: <cygwin-developers AT cygwin DOT com>
Content-Transfer-Encoding: 8bit
X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id g25CQrV27536



> -----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?

Rob