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 27F663858400
Authentication-Results:	sourceware.org;
	dmarc=none (p=none dis=none) header.from=plebeian.com
Authentication-Results:	sourceware.org; spf=pass smtp.mailfrom=plebeian.com
DKIM-Signature:	v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
	d=plebeian.com; s=default; h=Content-Transfer-Encoding:Content-Type:
	Message-ID:References:In-Reply-To:Subject:Cc:To:From:Date:MIME-Version:Sender
	:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:
	Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:
	List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive;
	bh=Ap0Z2E55nSCI1FWN9Ku8/Y9Q0Sp1LulJ2Nj1QRawsoY=; b=szAhyZKiAjVlR/ipdTDGdGA1Rn
	YjjGE636v6UAHsfBZ10eiZqilVpEGB+7CZ/8fPVY6dP2r5poVlxKZ5YKYMDOH7mN8Au8vYxi5c3hn
	AVTjGpofCzm6ERClRMg6VfN5jH5gAS6lbvsp3SjT3DwKRlD/tW6HLSb+iDiAnNUO8MB/cJaLHsMxK
	5NnOZP98zS4Wx9/pwcWZcpY/GAs+GDKaWxINm+jpoZz71Y2aoz9pRBZUHGfLiNhhBmcAZMi0HhB+8
	C2UJWVrkw+7EVOYzMoFmxUTQyythAOXxi7dObcuj5HZwy9QqNvNMop4cQRb32nznDmC7etI8YDihT
	eI5Uekgw==;
MIME-Version:	1.0
Date:	Sun, 10 Jul 2022 22:17:12 -0400
From:	Chris Wagner <wagnerc AT plebeian DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: chmod g+s ineffective
In-Reply-To:	<463526579.20220701025601@yandex.ru>
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>
User-Agent:	Roundcube Webmail/1.4.12
Message-ID:	<ddda74cf906b99988ecbbb30f6f5ef0a@plebeian.com>
X-Sender:	wagnerc AT plebeian DOT com
X-AntiAbuse:	This header was added to track abuse,
	please include it with any abuse report
X-AntiAbuse:	Primary Hostname - www16.qth.com
X-AntiAbuse:	Original Domain - cygwin.com
X-AntiAbuse:	Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse:	Sender Address Domain - plebeian.com
X-Get-Message-Sender-Via:	www16.qth.com: authenticated_id: wagnerc AT plebeian DOT com
X-Authenticated-Sender:	www16.qth.com: wagnerc AT plebeian DOT com
X-Source:
X-Source-Args:
X-Source-Dir:
X-Spam-Status:	No, score=-0.9 required=5.0 tests=BAYES_05, BODY_8BITS,
	DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_LOW,
	SPF_HELO_PASS, 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 26B2Hr0P004264

>> 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.

It works for me:
$ ls -ld z
drwxrwsr-x+ 1 wagnerc Users 0 Nov 24  2020 z

$ getfacl z
# file: z
# owner: wagnerc
# group: Users
# flags: -s-
user::rwx
group::r-x
group:Administrators:rwx
group:Users:rwx
mask::rwx
other::r-x
default:user::rwx
default:user:wagnerc:rwx
default:group::r-x
default:group:Administrators:rwx
default:group:Users:rwx
default:mask::rwx
default:other::r-x


$ icacls z
z NULL SID:(DENY)(Rc,S,WD,REA,WEA,X,DC)
   APPLEJACK\wagnerc:(F)
   BUILTIN\Users:(RX)
   BUILTIN\Administrators:(RX,W,DC)
   BUILTIN\Users:(RX,W,DC)
   Everyone:(RX)
   NULL SID:(OI)(CI)(IO)(DENY)(Rc,S,WD,REA,WEA,X,DC)
   CREATOR OWNER:(OI)(CI)(IO)(F)
   APPLEJACK\wagnerc:(OI)(CI)(IO)(RX,W,DC)
   BUILTIN\Users:(OI)(CI)(IO)(RX)
   BUILTIN\Administrators:(OI)(CI)(IO)(RX,W,DC)
   BUILTIN\Users:(OI)(CI)(IO)(RX,W,DC)
   Everyone:(OI)(CI)(IO)(RX)

Successfully processed 1 files; Failed processing 0 files

$ uname -a
CYGWIN_NT-6.1 applejack 3.1.0(0.340/5/3) 2019-11-19 13:58 x86_64 Cygwin



Thanks.

-- 
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 -