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 459043853560 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: Date: Wed, 29 Jun 2022 09:18:24 -0500 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: chmod g+s ineffective Content-Language: en-US To: cygwin AT cygwin DOT com References: <9c053381-4466-ea8a-11d6-ea2e676d3b35 AT huarp DOT harvard DOT edu> <792558531 DOT 20220629153952 AT yandex DOT ru> From: Norton Allen In-Reply-To: <792558531.20220629153952@yandex.ru> X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00, 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 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com Sender: "Cygwin" On 6/29/2022 7:39 AM, Andrey Repin wrote: > Greetings, Norton Allen! > >> 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 > ----------------^ > > $ getfacl foo I will collect this shortly, but IIRC, getfacl showed it was not set. I did see it set there under 'flags' on the system that works. > >> I ran strace, and it looks like the correct system call parameter is getting passed. >> I am curious as to how the sticky bit is implemented. > First see if it was set or not. > >> It isn't obvious what underlying Windows functionality (if any) is applied. > It does. But the big question is, where do you try to do that. > If this is inside Cygwin installation root, then things could work more or > less POSIX'y. If this is outside Cygwin root (f.e. in your system profile), it > may or may not work completely, depends how did you mount /cygdrive prefix. I will confirm (shortly), but I'm pretty sure these tests were done under vanilla /home (so c:\cygwin64\home) > >> Ah, just checked on a system where this works, and creating a file in the >> directory from the >> command shell does not set the group, so presumably this functionality is >> all within cygwin. That works for my application, except when it doesn't. >> Any suggestions on what I should look for? > Look if you could avoid using +s. Isn't DACL enough? Am I correct that DACL is not available unless I am on a domain? This is for a field computer, so connection to a domain is generally more problematic than helpful. -- 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