X-Recipient:	archive-cygwin AT delorie DOT com
X-Original-To:	cygwin AT cygwin DOT com
Delivered-To:	cygwin AT cygwin DOT com
DMARC-Filter:	OpenDMARC Filter v1.4.1 sourceware.org A83423858419
Authentication-Results:	sourceware.org; dmarc=none (p=none dis=none)
	header.from=huarp.harvard.edu
Authentication-Results:	sourceware.org;
	spf=pass smtp.mailfrom=huarp.harvard.edu
Message-ID:	<2c7cbdb4-1fe4-501b-f5cb-82204b9e4089@huarp.harvard.edu>
Date:	Mon, 11 Jul 2022 12:49:01 -0400
MIME-Version:	1.0
User-Agent:	Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101
	Thunderbird/91.11.0
Subject:	Re: chmod g+s ineffective
To:	moss AT cs DOT umass DOT edu, Chris Wagner <wagnerc AT plebeian DOT com>, cygwin AT cygwin DOT com
References:	<9c053381-4466-ea8a-11d6-ea2e676d3b35 AT huarp DOT harvard DOT edu>
	<792558531 DOT 20220629153952 AT yandex DOT ru>
	<dd5e2750-5d86-0283-84fb-ef10efd4a8a0 AT huarp DOT harvard DOT edu>
	<7964c08d-83cb-aab3-5d1c-4a5f0a86bf0a AT huarp DOT harvard DOT edu>
	<463526579 DOT 20220701025601 AT yandex DOT ru>
	<ddda74cf906b99988ecbbb30f6f5ef0a AT plebeian DOT com>
	<d661eca3-484b-258d-7ba6-7af22347d27a AT cs DOT umass DOT edu>
From:	Norton Allen <allen AT huarp DOT harvard DOT edu>
In-Reply-To:	<d661eca3-484b-258d-7ba6-7af22347d27a@cs.umass.edu>
X-Spam-Status:	No, score=-0.6 required=5.0 tests=BAYES_00, BODY_8BITS,
	KAM_DMARC_STATUS, NICE_REPLY_A, SPF_HELO_NONE, SPF_PASS, TXREP,
	T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version:	SpamAssassin 3.4.6 (2021-04-09) on
	server2.sourceware.org
X-BeenThere:	cygwin AT cygwin DOT com
X-Mailman-Version:	2.1.29
List-Id:	General Cygwin discussions and problem reports <cygwin.cygwin.com>
List-Unsubscribe:	<https://cygwin.com/mailman/options/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=unsubscribe>
List-Archive:	<https://cygwin.com/pipermail/cygwin/>
List-Post:	<mailto:cygwin AT cygwin DOT com>
List-Help:	<mailto:cygwin-request AT cygwin DOT com?subject=help>
List-Subscribe:	<https://cygwin.com/mailman/listinfo/cygwin>,
	<mailto:cygwin-request AT cygwin DOT com?subject=subscribe>
Errors-To:	cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com
Sender:	"Cygwin" <cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com>
X-MIME-Autoconverted:	from base64 to 8bit by delorie.com id 26BGnPOc023618

On 7/10/2022 10:33 PM, Eliot Moss wrote:
> On 7/10/2022 10:17 PM, Chris Wagner wrote:
>>>> On 6/29/2022 9:18 AM, Norton Allen wrote:
>>>>>>> On one machine I have, chmod g+s fails to set the sticky bit. 
>>>>>>> The >>> command
>>>>>>> does not return any error, but ls -l continues to show the bit 
>>>>>>> not set.
>>>>>>>      $ mkdir foo
>>>>>>>      $ chgrp flight foo
>>>>>>>      $ chmod g+ws foo
>>>>>>>      $ ls -ld foo
>>>>>>>      drwxrwxr-x+ 1 nort flight 0 Jun 29 06:50 foo
>>
>> Hi.  The permission bits are implemented as normal Window's DACLs 
>> (Discretionary Access List).  +s is implemented magically with the 
>> NULL SID.  You can view it from Explorer or with icacls.  Try 
>> checking the return code (echo $?) from chmod. Also try changing 
>> perms from Explorer.  You might not be able to set the NULL SID for 
>> some reason.
>
> I'd like to add that, for good reason, the Cygwin DACLs do not conform
> to the order of entries that some Windows tools prefer.  Don't let any
> Windows program/tool reorder the DACLs!  It will break the Cygwin
> functionality, and the Cygwin order does not break Windows functionality.
>
Right. My experience (Windows 10) is that I cannot change perms from 
Explorer if I don't let them reorder the perms (which I do not).

I have been separated from the machine that exhibits the problem, so I 
have not been able to try the solutions suggested, but expect to have it 
back in a week or so.



-- 
Problem reports:      https://cygwin.com/problems.html
FAQ:                  https://cygwin.com/faq/
Documentation:        https://cygwin.com/docs.html
Unsubscribe info:     https://cygwin.com/ml/#unsubscribe-simple

- Raw text -