samba rename bug - solution?

[Bob Elzer]

What if you chmod 777 read-only-file  before the rsync ?

If that works, maybe changing the attributes, before the copy would help.

Wouldn't be the ideal solution, but might get the job done.

But might leave files that didn't change in a 777 mode.

 

-----Original Message-----
From: plug-discuss-bounces at lists.plug.phoenix.az.us
[mailto:plug-discuss-bounces at lists.plug.phoenix.az.us] On Behalf Of Eric
Shubert
Sent: Saturday, March 07, 2009 9:42 AM
To: plug-discuss at lists.plug.phoenix.az.us
Subject: Re: samba rename bug - solution?

Craig White wrote:
> On Sat, 2009-03-07 at 08:10 -0700, Eric Shubert wrote:
>> Craig White wrote:
>>> I would suspect that the version isn't as important here as making 
>>> sure that the filesystem is mounted with extended attributes.
>>>
>> Here's the pertinent part of my smb.conf:
>>          map archive = no
>>          map hidden = no
>>          map read only = no
>>          map system = no
>>          store dos attributes = yes
>>
>> Here is the fstab entry:
>> /dev/VolGroup00/LogVol00 /          ext3    defaults,user_xattr  1 1
>>
>> Any idea what is or might be wrong with the configuration?
> ----
> from the man page of smb.conf...
> 
> under 'map read only'
> If store dos attributes is set to yes then this parameter is ignored.
> This is a new parameter introduced in Samba version 3.0.21.
> 
> It seems to me that the upgrade of versions has nothing to do with 
> this issue.
> 
> under store dos attributes (S)
> 
> If this parameter is set Samba attempts to first read DOS attributes 
> (SYSTEM, HIDDEN, ARCHIVE or READ-ONLY) from a filesystem extended 
> attribute, before mapping DOS attributes to UNIX permission bits (such 
> as occurs with map hidden and map readonly). When set, DOS attributes 
> will be stored onto an extended attribute in the UNIX filesystem, 
> associated with the file or directory. For no other mapping to occur 
> as a fall-back, the parameters map hidden, map system, map archive and 
> map readonly must be set to off. This parameter writes the DOS 
> attributes as a string into the extended attribute named 
> "user.DOSATTRIB". This extended attribute is explicitly hidden from 
> smbd clients requesting an EA list.
> On Linux the filesystem must have been mounted with the mount option 
> user_xattr in order for extended attributes to work, also extended 
> attributes must be compiled into the Linux kernel.
> Default: store dos attributes = no
> 
> I gather that with store dos attributes set to yes, then a file on 
> Linux would appear to be something like rwxrwxr_x (depending upon your 
> create
> mask) but the dos attribute itself is read only. I think that if the 
> file is copied as r_xr_xr_x then the dos attribute setting is probably 
> not going to help.
> 
> Your configuration seems reasonable to me. There are a couple of 
> things I would check. The first thing I would probably do is up the 
> log level to 10 to get an extremely verbose log of the error which may 
> present a clue. The second thing I would check is renaming a 'read 
> only' file from other standard types of Windows programs such as the 
> Windows Explorer and perhaps the dos rename utility because I wonder 
> if the cygwin rsync actually respects the dos attributes.
> 
> Craig
> 

I should have mentioned that I did test other windows ways of renaming, both
to local and samba files.
.) explorer rename of non-readonly local file just does it
.) explorer rename of readonly local file gives warning, then does it
.) ren command of non-readonly local file just does it
.) ren command of readyonly local file just does it
.) explorer rename of non-readonly smb file just does it
.) explorer rename of readonly smb file gives warning, then does it
.) ren command of non-readonly smb file just does it
.) ren command of readonly smb file fails "permission denied"

Thanks for the idea on logging, I'll try that and see what it gives.
--
-Eric 'shubes'

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