X-Recipient: archive-cygwin@delorie.com X-Spam-Check-By: sourceware.org Date: Mon, 3 Dec 2007 15:18:43 +0100 From: Corinna Vinschen To: cygwin@cygwin.com Subject: Re: Can cygwin bypass windows file permissions? Message-ID: <20071203141843.GP30894@calimero.vinschen.de> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.16 (2007-06-09) Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com On Dec 3 14:54, wrbach@freenet.de wrote: > Hello! > > I have made a file test.txt in d:temp and removed all Windows permissions from it. > Consequently, I cannot access the file from Windows Explorer or cmd.exe. > > However, if I try the following from a cygwin bash I get the contents of the file > $cat /cygdrive/d/temp/test.txt > > How can cygwin bypass the windows file permissions, if I have even removed SYSTEM from the Acl: > $ ls -l test.txt > ---------- 1 Administratoren SYSTEM 3058 May 4 2006 test.txt > > $ getfacl.exe test.txt > # file: test.txt > # owner: Administratoren > # group: SYSTEM > user::--- > group::--- > mask:rwx > other:--- > > $ cacls test.txt > d:temptest.txt Cygwin opens files with the FILE_OPEN_FOR_BACKUP_INTENT flag, so you get root-like file access privileges if you're working under an admin account. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/