samba rename bug - solution?

[Eric Shubert]

Craig White wrote:
> On Fri, 2009-03-06 at 20:20 -0700, Nathan England wrote:
>> On Friday 06 March 2009 20:03:14 Craig White wrote:
>>> On Fri, 2009-03-06 at 19:11 -0700, Eric Shubert wrote:
>>>> I'm using rsync and cygwin to migrate some files from WinXP to samba
>>>> (3.0.28-1.el5_2.1) on Centos (5.2). Files that have the read-only
>>>> attribute are failing the final rename with "permission denied".
>>>>
>>>> Permissions are all ok, and I've verified with manual testing that when
>>>> attempting to rename a read-only file on a samba share from the Windoze
>>>> CLI, it fails with "permission denied", so the problem appears to be
>>>> with samba.
>>>>
>>>> I've googled quite a bit, and found an indication that this indeed was a
>>>> problem with samba and "might be fixed in 3.0.14a. Should be fixed for
>>>> sure in 3.0.20rc1". So I'm running 3.0.28 (the latest COS5 version) and
>>>> it appears to not be fixed in that version.
>>>>
>>>> 3 questions:
>>>>
>>>> 1) Does anyone know which version this might have been fixed in, or if
>>>> it's fixed yet at all?
>>> ----
>>> I would suspect that the version isn't as important here as making sure
>>> that the filesystem is mounted with extended attributes.
>>>
>>> You might find the official samba documentation useful here
>>> http://www.samba.org/samba/docs/man/Samba-HOWTO-Collection/AccessControls.h
>>> tml ----
>>>
>>>> 2) Where might I find a compatible rpm of a newer version of samba?
>>> ----
>>> I wouldn't suggest that you jump the shark on this just yet.
>>> ----
>>>
>>>> 3) Any idea why is RHEL/COS so far behind with samba releases?
>>> ----
>>> Sure - CentOS is repackage of RHEL and Red Hat is reticent to distribute
>>> updates that require changing configuration files where the act of
>>> updating causes things to break. That said, RHEL 5 finally went from
>>> Samba 3.0.10.x to 3.0.28.x because they needed more conformity with
>>> versions of Vista and Win2k8 Server.
>>>
>>> That said, I think it's your configuration that needs changing, not the
>>> version of Samba but if you feel you need to install a later version of
>>> samba...
>>>
>>> http://apt.kde-redhat.org/apt/kde-redhat/redhat/5/i386/RPMS.unstable/
>>>
>>> has version 3.0.32
>>> and
>>> sernet.de should have various 3.2.x and 3.3.x versions suitable for
>>> installation on RHEL 5/CentOS 5
>>> http://ftp.sernet.de/pub/samba/tested/centos/5/
>>>
>>> Craig
>>>
>> I was under the impression that samba does not allow for name changes, but 
>> rather copies the current file to a new file of whatever name you give it. So 
>> if you rename file.exe to fileA.exe it copies file.exe to fileA.exe then 
>> deletes file.exe
>>
>> If this is the case it may not be able to delete the RO files...
> ----
> I'm not even sure that using rsync on cygwin respects NT permissions at
> all and would probably suggest that he use robocopy.exe for copying
> files and retaining permissions but I was concentrating on answering the
> questions he was asking.
> 
> Craig
> 

I appreciate that, Craig, and was wondering as well about rsync and NT 
permissions (and ext3 user_xattr). It appears that rsync on cygwin (at 
least) does respect at least the r-o attribute, as otherwise I wouldn't 
be seeing this problem! ;)

-- 
-Eric 'shubes'