From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 65428 invoked by alias); 28 Jan 2016 18:43:53 -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 65408 invoked by uid 89); 28 Jan 2016 18:43:52 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=0.2 required=5.0 tests=AWL,BAYES_50,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 spammy=owning, acls, ACLs, mysterious X-HELO: mout.gmx.net Received: from mout.gmx.net (HELO mout.gmx.net) (212.227.15.19) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Thu, 28 Jan 2016 18:43:51 +0000 Received: from [217.7.72.1] by 3capp-gmx-bs39.server.lan (via HTTP); Thu, 28 Jan 2016 19:43:47 +0100 MIME-Version: 1.0 Message-ID: From: "Rainer Blome" To: cygwin@cygwin.com Subject: Re: chmod failed: Invalid argument Content-Type: text/plain; charset=UTF-8 Date: Thu, 28 Jan 2016 20:18:00 -0000 Sensitivity: Normal In-Reply-To: <20160128172256.GB18626@calimero.vinschen.de> References: <20160128144429.GC27369@calimero.vinschen.de> , <20160128172256.GB18626@calimero.vinschen.de> X-UI-Message-Type: mail X-UI-Out-Filterresults: notjunk:1;V01:K0:T2lv0MVVio4=:Qd4tWz2N8etPGpngao6myL SwcZLDO/w06AfatJ2i6AEVxgkmcuurjyKXHx+EturW1Ghqp3iOGnzG85dV78fL8fW5bmr1y5L dr3erwmLqihVaAwu2dzP1A4PAqv2jd8IPzT00+iLfFxp+hGQfid+lnykvVxv480KfCXdV9MUJ g9seqhOS0r9LzRApN0NUlaxLiYOmj3PXt8xSxjWv/eEINegvGD9GcXnQtUN/lqo+x3Fkpzfbu fsIgmZRKe4mZHqBEwR+G8K6XJtlK+P/7F9LzR3K3FdU+xIgONtAmioywdN6s8U673sJqcn7MZ zpgik+V8bPQpIe5HKT77pUcVvuZ6EdN2V5QZ4imXELeIiUsAaHrhjcN0b7oedrF13mVbEGitB XYrRflZoI0JUckIjqrwG0ilCw3eNiCfFhO6r/2BZuL/DHymfdFhw3Pi8xjVXVaigsFD/LDDof S2E8bScdKg== X-IsSubscribed: yes X-SW-Source: 2016-01/txt/msg00434.txt.bz2 > Corinna Vinschen wrote 2016-01-28 18:22: > On Jan 28 17:06, Rainer Blome wrote: > > > Corinna Vinschen wrote 2016-01-28 15-44: > > > On Jan 28 15:24, Rainer Blome wrote: > > > the acl should always at least contain ACEs for the > > > default POSIX perms, plus a NULL ACE: > > > > > > foo NULL SID:(DENY)(Rc,S) > > > VINSCHEN\corinna:(R,W,D,WDAC,WO) > > > VINSCHEN\vinschen:(R) > > > Everyone:(Rc,S,RA) > > > > In Windows Explorer -> `bar` -> RMB -> Properties -> Security -> > > Advanced, I am told that it inherits ist permissions from `base`, > > the parent of `bar`. (To be precise, it inherits from its > > grandparent, but I assume that the length of the ancestor chain is > > not important here.) > > This means the permission have been inherited when creating the > file but Cygwin couldn't overwrite the ACL with a POSIXified variant > for one reason or another. It might have to do with this mysterious > group 213... > > > > For directories also inheritable default perms for "CREATOR OWNER" and > > > "CREATOR GROUP". Is that really a Cygwin mkdir?!? > > > > As far as can see, yes, see above. > > > > > And then, what about > > > this unknwon group with gid 213? What does > > > > > > $ getent group 213 > > > > > > print? Something's weird here... > > > > getent group 213; echo $? > > 2 > > Ok, that's not exactly helpful to analyze this problem. Can you try > running another strace > > strace -o getfacl.trace getfacl > > on a file which has supposedly that group as owning group, e.g. your > "base" dir? We might have a chance to look at the SID of group 213 in > there. That command segfaults, just as `strace : ` does. > On a hunch, do you have old /etc/passwd and /etc/group files by any > chance? Does moving them out of /etc (don't delete them for now!), > exiting from Cygwin and starting a new shell somehow fix things for you? > How do the files look like? Define "old"! ;-) Yes, I do. There is no `/etc/group`, but `/etc/passwd` defines the group ID of my user as 213 (the real ID is a bit different, to be honest, but I do not think that matters.) When I rename the file and open a new Cygwin terminal, things start to work. `strace echo` yields the expected output, `chmod` does what it's supposed to do, and `git config`, `git init` and `git clone foo foo2` work as well. The `git clone repo:bar` then fails because my `~/.ssh` is apparently no longer found (and I can only log in via SSH key). This is a bit surprising, because in the new terminal, `$HOME` and `~/.` are still set the way I specified it in the old `/etc/passwd` (now with extension `.renamed`). So some programs apparently use one method of determining the home directory, and others use a different method. I will look into that tomorrow. If, after this "breakthrough", there is still value in looking further into the ACLs, I am willing to do that. However, the strace output looks awfully laborious to sanitize, so I can not do this today. Thanks for the help so far. Rainer -- 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