From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 16149 invoked by alias); 10 Sep 2015 16:07:58 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 16139 invoked by uid 89); 10 Sep 2015 16:07:57 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-0.5 required=5.0 tests=AWL,BAYES_50,SPF_HELO_PASS,SPF_PASS,T_RP_MATCHES_RCVD autolearn=ham version=3.3.2 X-HELO: limerock03.mail.cornell.edu Received: from limerock03.mail.cornell.edu (HELO limerock03.mail.cornell.edu) (128.84.13.243) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Thu, 10 Sep 2015 16:07:56 +0000 X-CornellRouted: This message has been Routed already. Received: from authusersmtp.mail.cornell.edu (granite4.serverfarm.cornell.edu [10.16.197.9]) by limerock03.mail.cornell.edu (8.14.4/8.14.4_cu) with ESMTP id t8AG7sKd012561 for ; Thu, 10 Sep 2015 12:07:54 -0400 Received: from [192.168.1.3] (cpe-67-249-176-138.twcny.res.rr.com [67.249.176.138]) (authenticated bits=0) by authusersmtp.mail.cornell.edu (8.14.4/8.12.10) with ESMTP id t8AG7rEP008041 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT) for ; Thu, 10 Sep 2015 12:07:54 -0400 Subject: Re: Group Permissions on root folders problem (Windows 10 TP build 10061) To: cygwin@cygwin.com References: <20150616155843.GE31537@calimero.vinschen.de> <55F1A69D.9050201@cox.net> From: Ken Brown Message-ID: <55F1AADD.1030908@cornell.edu> Date: Thu, 10 Sep 2015 16:07:00 -0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 MIME-Version: 1.0 In-Reply-To: <55F1A69D.9050201@cox.net> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2015-09/txt/msg00148.txt.bz2 On 9/10/2015 11:49 AM, David A Cobb wrote: > On a Windows-10 host: when I use Cygwin *chown***or *chmod *to make > permission changes, the next time I access the folder-tree from Windows > Explorer Security tab, it complains that the Access Control List is > incorrectly ordered and that will cause undesirable results; happy to > say, it gives me the chance to re-order the ACL. The usual undesirable > result is that an app can create a folder /New/ within /T/ but cannot > create anything within /T/////New/. > > Hypothesis: we are indirectly(?) modifying the ACL but are not observing > whatever Windows expects for ordering. I know that Windows enforces > "*deny*" rules before any "*allow*" rules; I do not know what other > ordering it observes. I do know that Windows doesn't really consider > the "group" property the same way POSIX does, FWIW. This is explained in the Cygwin User's Guide: https://cygwin.com/cygwin-ug-net/ntsec.html#ntsec-files Ken -- 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