[Samba] Preventing Windows from changing file permissions

av78us vaal av78us at yahoo.com
Thu May 20 03:19:28 MDT 2010

Hi Jeremy, tms3, 
Thanks for your responses. 
I had tried "nt acl support = no", but It didn't help. I tried placing it under my share [homes] and also under [global]. Both didn't help. 
The group and world write bits are getting set unless I prevent it by using a "create mask". The application I am using is "Beyond Compare" on a Windows XP desktop. 

"create mask" is not what I want because I do not want any changes to the permission of Unix files - neither setting any bits nor clearing any. 
Best regards,

--- On Sun, 5/16/10, Jeremy Allison <jra at samba.org> wrote:

From: Jeremy Allison <jra at samba.org>
Subject: Re: [Samba] Preventing Windows from changing file permissions
To: "av78us vaal" <av78us at yahoo.com>
Cc: samba at lists.samba.org
Date: Sunday, May 16, 2010, 5:48 AM

On Sat, May 15, 2010 at 04:30:54AM -0700, av78us vaal wrote:
> Hi, 
> Is there a way to configure samba such that Windows applications are not allowed to change file permissions for existing files in the share. 
> I just want to be able to read and modify the files from Windows without affecting the file permissions inadvertently. I do not care about any Windows side file attributes such as ACL. 
> I tried several things including parameters such as 'map archive = no', 'security mask = xxx' etc. Nothing seem to result in what exactly I want This is surprising considering that my requirement is very simple. 

You can always set "nt acl support = no", which is an old
option from when we first added Windows ACLs. Also setting
map XXX = no will stop DOS attributes being mapped to POSIX

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