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Date: Fri, 3 Apr 2009 17:44:47 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
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Subject: Re: [1.7]: /usr/bin/install fails on network drives
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On Apr  2 22:53, A.R. Burgers wrote:
> Corinna Vinschen schreef:
>
> >> Are these Samba shares by any chance?  I can reproduce this only
> >> for Samba shares, not for remote Windows NTFS drives.
> >
> > Oh, btw., install works fine for me, only mv complains with "failed to
> > preserve ownership".  Your above example also doesn't show any error on
> > install...
>
> I've tried several shares. Only on one of them I get an
> error with install:
>
>> //ecn/groups/g_zon_software/cygwin17/zz3.txt
>> install: setting permissions for
>> `//ecn/groups/g_zon_software/cygwin17/zz3.txt': Permission denied 
>
> When I look at the properties of this share it says it uses DFS
> (Distributed File System). This drive shows the access bits
> as -rwxrwxrwx, the others have -rw-r--r--
>
> with all of them I see the Permission Denied on mv.
> I have to ask our administrators for more details.

That would be nice.  I can explain and get rid of this "permission
denied" message on Samba.  What happens is that files are created under
the uid of the Unix user you're authenticated as, not the uid/SID of
your Windows user.  `mv -f' calls chown to set the owner to your Cygwin
uid which in turn tries to set the file's SID to your Windows user SID.
That can't work, unless you have a uid<->SID mapping in your domain
using winbind.  As a result, the NT call trying to set the file owner
returns with STATUS_INVALID_OWNER.

I can catch this case for Samba explicitely.

However, I can't do anything against a real ACCESS_DENIED sort of error
as it is returned by your DFS.  I see that it occurs at the same place
where the Samba problame occurs, but that's it.
I have no experience with DFS at all, and this would require to debug
what happens in your environment.  If you're willing to test, I would
give you a special handcrafted Cygwin DLL which prints more detailed
strace output to analyze what happens.  I can't promise that this is a
fixable situation, of course.

Btw., can you run /usr/lib/csih/getVolInfo.exe from the csih package on
your DFS drives (/ecn/groups and one of the others) and send the output
to this list?


Corinna

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

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