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 only = 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) 2.40.97.57.55
http://www.tranquil-it-systems.fr

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