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To: cygwin@cygwin.com
From: Chris <cgelinek@radlogic.com.au>
Subject: Re: File permissions on samba network share
Date: Thu, 25 Mar 2010 22:38:40 +0000 (UTC)
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References: <loom.20100325T074932-533@post.gmane.org>  <20100325085246.GE7718@calimero.vinschen.de> <20100325090748.GG7718@calimero.vinschen.de>
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Corinna Vinschen <corinna-cygwin <at> cygwin.com> writes:

> > > ...
> > > This lets the script execute, but I am a little bit worried about the other
> > > permissions, "-rw-r--r--" instead of "-rwxrw----".
> > > 
> > > Why are the permissions different?
> > 
> > http://cygwin.com/cygwin-ug-net/using.html#mount-table
> > 
> > > Is there a way of preserving the original permissions and still fake the
> > > user/group info as with "noacl"? 
> > 
> > No.  Since you're not using AD accounts and no winbind, the ACL returned
> > by Samba reflect the UNIX user and UNIX group the file is owned by.
> > I don't think there's a reliable way to convert the SIDs in the ACL to
> > the current user and primary group, except for another mount flag.
> 
> On second thought, it would still be a lot of work to get this working
> right.  The mount flag alone doesn't tell us which UNIX SID the Windows
> user SID is mapped to.  So you would need to set up some mapping file
> which Cygwin would have to read at startup, or the passwd file would
> need YA special case for the pw_gecos field.  Ick.
> 
> Corinna
> 

Sorry I forgot to mention that the permissions on the Linux machine running the
Samba server are more similar to the ones when I mount the network drive without
the "noacl" option in Cygwin. 

This is the ls line from the Linux machine:
-rwxrw----  1 chris tech 1014 Dec 15 14:16 amssetup

On Cygwin without "noacl":
-rwxrw---- 1 ???????? ???????? 1014 2009-12-15 14:16 amssetup

On Cygwin with "noacl"
-rw-r--r-- 1 chris None 1014 2009-12-15 14:16 amssetup

So apart from the ???????? entries, I think going without the "noacl" option
would be the way to go. But I will give it a try with "noacl" and see if it has
any undesired side-effects.

Thanks
Chris


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