[Samba] Fwd: Re: Re: Cannot ad­d/mo­dify ACL through win­dows ­client

Denis Cardon denis.cardon at tranquil-it-systems.fr
Wed May 15 02:46:50 MDT 2013

Hi Lucas,

> on both samba hosts (donald and pluto) these commands work great:
> id johndoe
> getent group
> getent passwd
> My pluto:/etc/nsswitch.conf looks like that:
> [...]
> passwd:         compat ldap
> group:          compat ldap
> shadow:         compat ldap
> [...]
> I want to add, that the described problem works fine if I try it on a share on "donald", my domain controller. The users are displayed fine under the security tab. So where could be the problem?

Users may be displayed because through query to the PDC.

If your nsswitch works properly, then I think we ought to look into your 
smb.conf. Could you please post the global part? Are you using 
security=user or security=domain?

What do you get with pdbedit -L -v ?

By the way, samba4 rocks and it is much easier to setup. You should try it.



> Lucas
> Втр 14 Май 2013 19:57:00 +0400, Denis Cardon  написал:
> Hi Lucas,
>> I am struggling around with Windows ACLs and cannot find a solution nor how to troubleshoot that. I have two samba3 hosts. Hostname "donald" is my domain controller with samba 3.x + OpenLDAP server running. Hostname "pluto" is my other samba 3.x server which was joined to my domain. I use LDAP for my users+groups. I dont have winbind on my machines. On hostname "pluto" I have a share in smb.conf which says:
>> [free4all]
>> path = /data/free4all
>> read onlyXSSCleaned= No
>>                 create mask = 0777
>>                 directory mask = 0777
>>                 vfs object = acl_xattr
>>                 nt acl support = yes
>>                 dos filemode = yes
>> "testparm -s -a -v |grep acl" shows me:
>> acl compatibility = auto
>>           acl check permissions = Yes
>>           acl group control = No
>>           acl map full control = Yes
>>           force unknown acl user = No
>>           inherit acls = No
>>           nt acl support = Yes
>>           profile acls = No
>>           map acl inherit = No
>>           vfs objects = acl_xattr
>>           force unknown acl user = Yes
>> On a windows client I am right-clicking on \\pluto\free4all\subdir and choose the "Security" tab. I see a user called "Everyone" and a user without username, but only SID number. The SID is S-1-5-21-blablabla-1234567-blabla-500.  I manually checked this SID at my LDAP database. Funnily I have two users with this same SID, one is called "root" and the is called "admin". Weird, but not important imho at this point.
> Rid -500 is part of the well known SID, it should be for admin user and
> shouldn't be used for root (http://support.microsoft.com/kb/243330)
>> Back on the windows client, inside the "Security" tab, I click on "Add" and choose a user of my Domain Users. I see him in the list. But as soon as I click "Apply" on this window, the user disappears from the security tab list. The logfile at samba-server hostname=pluto outputs:
>> [2013/05/14 15:48:08.861822,  0] smbd/posix_acls.c:1755(create_canon_ace_lists)
>>     create_canon_ace_lists: unable to map SID S-1-5-21-1062190697-4189521229-2202214947-129762 to uid or gid.
>> This SID was the user I tried to add. Why does this not work and how should I fix or even troubleshoot that? I really need some assistance, I have no clue what else to try. Thanks to everyone.
> Are you sure that there is a uid/gid mapping for your samba users on
> your server. For instance, if you type "id myusername" or "getent
> passwd", do you get a uid?
> If not, you should check if your /etc/nsswitch.conf configuration is ok.
> If you don't use winbind, you should have nssldap configured.
> Cheers,
> Denis
>> Lucas.

Denis Cardon
Tranquil IT Systems
Les Espaces Jules Verne, bâtiment A
12 avenue Jules Verne
44230 Saint Sébastien sur Loire
tel : +33 (0)

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