X-Recipient:	archive-cygwin AT delorie DOT com
DomainKey-Signature:	a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:content-type:mime-version:subject:from
	:in-reply-to:date:content-transfer-encoding:message-id
	:references:to; q=dns; s=default; b=uESWwDpIpoX63X7wbqQlupBviSjQ
	lk1fy+0w3mmH3R0VJmGxUiYtMOtrST9FnFtrVhslOZsTKIzIKNvzjGUa/HS2PLSo
	akZ7Uwr8OK3ebELcSVYL4tW51XW+eqoco1sX/K2WpchJtx1zfRq4ZuEzFKMx3N55
	DSDy6RPhoh/Qr5w=
DKIM-Signature:	v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:content-type:mime-version:subject:from
	:in-reply-to:date:content-transfer-encoding:message-id
	:references:to; s=default; bh=4ngWnVrQuRVCONHa3GiZOpY9rHM=; b=oK
	vbPHWHVBe0FJ/iZ2dSytlKB7qZAecb3+jzh/ccg2T2+qBm9P5AUMBMMEurjWpaSo
	0ReS0/BCYBdV7IqthYoN+kjPv/3dJ91s99YCTjaVRF2+T8EsI6Z6EMFbcKP+lgBD
	Orl6UjPGyqDHCs1yZefyuPaLJh6EJjq2s6PVOc4D8=
Mailing-List:	contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id:	<cygwin.cygwin.com>
List-Subscribe:	<mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive:	<http://sourceware.org/ml/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender:	cygwin-owner AT cygwin DOT com
Mail-Followup-To:	cygwin AT cygwin DOT com
Delivered-To:	mailing list cygwin AT cygwin DOT com
Authentication-Results:	sourceware.org; auth=none
X-Virus-Found:	No
X-Spam-SWARE-Status:	No, score=1.1 required=5.0 tests=AWL,BAYES_50,KAM_LAZY_DOMAIN_SECURITY,RP_MATCHES_RCVD autolearn=no version=3.3.2
X-HELO:	etr-usa.com
Mime-Version:	1.0 (Mac OS X Mail 8.2 \(2104\))
Subject:	Re: Error accessing mapped drive >2TB?
From:	Warren Young <wyml AT etr-usa DOT com>
In-Reply-To:	<20151023092007.GF5319@calimero.vinschen.de>
Date:	Fri, 23 Oct 2015 16:04:03 -0600
Message-Id:	<0F9378A1-6890-42CE-BD19-578167F116AA@etr-usa.com>
References:	<CA+2x6-L_pqdN6PHE0c15hcmrmB66Z75Hz95cH+dbcn4yXuVZNg AT mail DOT gmail DOT com> <712A87EA-64C7-4033-BE7F-39C8C8D527EB AT etr-usa DOT com> <20151021100328 DOT GL5319 AT calimero DOT vinschen DOT de> <CB8461F5-FB0E-44D8-81BB-B52DD02AD400 AT etr-usa DOT com> <20151021162254 DOT GC19868 AT calimero DOT vinschen DOT de> <169BF9F6-FF26-4073-9CC4-786882EFBAE9 AT etr-usa DOT com> <20151022083446 DOT GW5319 AT calimero DOT vinschen DOT de> <B8DBF0B5-51A9-4833-92D5-CA9E08B27DEC AT etr-usa DOT com> <20151023092007 DOT GF5319 AT calimero DOT vinschen DOT de>
To:	cygwin AT cygwin DOT com
X-IsSubscribed:	yes
X-MIME-Autoconverted:	from quoted-printable to 8bit by delorie.com id t9NM4LnB030299

On Oct 23, 2015, at 3:20 AM, Corinna Vinschen wrote:
> 
> Well, it was *you* asking "How could we prove that the problem is the
> Apple SMB server?"  I was just trying to help.  If that's not desired,
> I don't have to.

I shouldn’t have suggested attacking the problem at the SMB protocol layer to begin with.  That requires the sort of expertise that the Samba and Apple developers have, and I doubt I can get access to either.  Since I’m not going to go and acquire such expertise myself just to answer the question, it’s a hopeless line of inquiry.

Instead, it would be better if we can refine the Windows API C code we’ve been playing with to show the problem.  Then I can attach it to an Apple bug report. I’m sure they like STCs, too. :)

I’ve made the suggested changes to the program, here:

  http://pastebin.com/uZdDZPgi

Is that enough to take to Apple?  I mean, does this let them wiggle out and say, “You’re doing it wrong”?

>>>>> HANDLE handle = CreateFile ("P:\\", ...);
>>>> 
>>>> I guess I’m not seeing what values to pass to CreateFile()
>>> 
>>> Opening a directory requires to use the FILE_FLAG_BACKUP_SEMANTICS
>>> flag.
>> 
>> Yes, silly me for not guessing that Windows requires that I tell it I
>> am about to do a backup before I attempt to open a directory for
>> reading.  What was so wrong about the design of opendir() that MS had
>> to reinvent it this way?
> 
> Think DOS/early Windows.  CreateFile was not meant to open directories
> to perform a directory search

I was reacting more to the revelation that Windows has workarounds for the known-problematic file access semantics, and that they’re specifically labeled as “for backup programs” when in reality they’re just ad hoc post facto fixes to a poorly thought out initial design.

They’ve reinvented Unix, poorly.
--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple

- Raw text -