X-Recipient: archive-cygwin AT delorie DOT com
X-Spam-Check-By: sourceware.org
Date: Thu, 5 Apr 2012 11:46:07 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: chmod problem
Message-ID: <20120405094607.GL13898@calimero.vinschen.de>
Reply-To: cygwin AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
References: <COL102-W43EF8B4D23C6886C30B4A6B5320 AT phx DOT gbl>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline
In-Reply-To: <COL102-W43EF8B4D23C6886C30B4A6B5320@phx.gbl>
User-Agent: Mutt/1.5.21 (2010-09-15)
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
List-Id: <cygwin.cygwin.com>
List-Unsubscribe: <mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

On Apr  4 13:16, Karl M wrote:
> 
> 
> Hi All...
>  
> 
> On a recent Cygwin install on a new win7-64 machine, I ran into a problem. The ssh service would not start because the protection on the /etc/ssh_host_rsa_key was too weak. (I use only the rsa host key.)
> 
> If I chmod the file to 600, all is well. But...if I do it within a shell script, the chmod has no effect. Below is a short test case and a bash -x run of the script?
>  
> 
> $ cat test-config
> chown administrators /etc/ssh*
> ls -al /etc/ssh_host_rsa_key
> chmod -v 600 /etc/ssh_host_rsa_key
> ls -al /etc/ssh_host_rsa_key
> $ cat test-config
> chown administrators /etc/ssh*
> ls -al /etc/ssh_host_rsa_key
> chmod -v 600 /etc/ssh_host_rsa_key
> ls -al /etc/ssh_host_rsa_key
>  
> 
> $ bash -x test-config
> + chown administrators /etc/ssh_host_rsa_key /etc/ssh_host_rsa_key.pub /etc/sshd_config
> + ls -al /etc/ssh_host_rsa_key
> -rw-rw---- 1 Administrators root 1675 Apr 4 11:30 /etc/ssh_host_rsa_key
> + chmod -v 600 /etc/ssh_host_rsa_key
> mode of `/etc/ssh_host_rsa_key' changed from 0660 (rw-rw----) to 0600 (rw-------)
> + ls -al /etc/ssh_host_rsa_key
> -rw-rw---- 1 Administrators root 1675 Apr 4 11:30 /etc/ssh_host_rsa_key
> 
> This test was on a fresh (1.7.12) from this morning.

There's your problem:  The Administrators group and the root group
are just two different Cygwin group names for the same Windows group
with SID S-1-5-32-544.  So, the above POSIX permissions are a result
of the SID S-1.5.32.544 having rw- permissions.

Apart from that, the owner of the /etc/ssh* files should be cyg_server,
not the admins group.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

--
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