[Samba] ACL on GPO directory does not match expected value from GPO object. AGAIN.

[Alex Matthews]

Hi all,

Some (then all) of our workstations were complaining about incorrect 
ACLs on GPOs and were unable to read the gpt.ini to apply the GPOs.
So I did a sysvolcheck and sure enough I'd lost the ACLs when I moved 
our sysvol share to a new location on the server (whoops, mea culpa).

I ran a sysvolreset which took a long time to return (some 5 minutes, 
please see my post on slow winbind lookups).

Just to make sure everything went as planned I re-ran the sysvolcheck 
and I get the following error:

ERROR(<class 'samba.provision.ProvisioningError'>): uncaught exception - 
ProvisioningError: DB ACL on GPO directory 
/vol/samba/shares/sysvol/internal.stmaryscollege.co.uk/Policies/{31B2F340-016D-11D2-945F-00C04FB984F9} 
O:LAG:DUD:P(A;OICI;0x001f01ff;;;DA)(A;OICI;0x001f01ff;;;EA)(A;OICIIO;0x001f01ff;;;CO)(A;OICI;0x001f01ff;;;DA)(A;OICI;0x001f01ff;;;SY)(A;OICI;0x001200a9;;;AU)(A;OICI;0x001200a9;;;ED) 
does not match expected value 
O:DAG:DUD:P(A;OICI;0x001f01ff;;;DA)(A;OICI;0x001f01ff;;;EA)(A;OICIIO;0x001f01ff;;;CO)(A;OICI;0x001f01ff;;;DA)(A;OICI;0x001f01ff;;;SY)(A;OICI;0x001200a9;;;AU)(A;OICI;0x001200a9;;;ED) 
from GPO object
   File "/usr/lib64/python2.7/site-packages/samba/netcmd/__init__.py", 
line 175, in _run
     return self.run(*args, **kwargs)
   File "/usr/lib64/python2.7/site-packages/samba/netcmd/ntacl.py", line 
245, in run
     lp)
   File 
"/usr/lib64/python2.7/site-packages/samba/provision/__init__.py", line 
1599, in checksysvolacl
     direct_db_access)
   File 
"/usr/lib64/python2.7/site-packages/samba/provision/__init__.py", line 
1550, in check_gpos_acl
     domainsid, direct_db_access)
   File 
"/usr/lib64/python2.7/site-packages/samba/provision/__init__.py", line 
1500, in check_dir_acl
     raise ProvisioningError('%s ACL on GPO directory %s %s does not 
match expected value %s from GPO object' % (acl_type(direct_db_access), 
path, fsacl_sddl, acl))

Comparing the two ACLs

O:LAG:DUD:P(A;OICI;0x001f01ff;;;DA)(A;OICI;0x001f01ff;;;EA)(A;OICIIO;0x001f01ff;;;CO)(A;OICI;0x001f01ff;;;DA)(A;OICI;0x001f01ff;;;SY)(A;OICI;0x001200a9;;;AU)(A;OICI;0x001200a9;;;ED)
O:DAG:DUD:P(A;OICI;0x001f01ff;;;DA)(A;OICI;0x001f01ff;;;EA)(A;OICIIO;0x001f01ff;;;CO)(A;OICI;0x001f01ff;;;DA)(A;OICI;0x001f01ff;;;SY)(A;OICI;0x001200a9;;;AU)(A;OICI;0x001200a9;;;ED) 


The only difference I can see is the 'DAG' vs 'LAG' at the beginning 
(Directory ACL vs File ACL?)

Thanks,

Alex