[Samba] Remove all Windows ACL's from files/folders

Jeremy Allison jra at samba.org
Fri Mar 25 22:35:47 UTC 2022

On Fri, Mar 25, 2022 at 05:27:55PM -0500, Patrick Goetz via samba wrote:
>On 3/24/22 12:10, Jeremy Allison via samba wrote:
>>On Thu, Mar 24, 2022 at 10:07:16AM -0700, Greg Sloop <gregs--- via 
>>samba wrote:
>>>What's the proper way to REMOVE all the ACL's assigned by Windows to a
>>>Samba share/folders/files?
>>>The short story is I was having problems assigning ACL's via the Windows
>>>security dialog. I managed to fix that, but now users that I 
>>>assign rights
>>>to a file/folder simply don't have those rights, and I can't 
>>>figure out why.
>>>I want to make absolutely sure that all the previous ACL's are 
>>>gone so I'm
>>>sure I'm working with a clean setup. If I still have issues, then 
>>>at least
>>>I'm starting from a clean base, so working through the troubleshooting
>>>steps might be easier.
>>If you are storing Windows ACLs into EA's then recursively
>>remove system.NTACL from all files/directories. You'll
>>need to be root.
>Sorry, this lost me completely.  What is system.NTACL?

system.NTACL is the extended attribute smbd uses to
store the Windows ACL in ndr format.

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