[Samba] Cleanup permission settings / traverse folder

[Jeremy Allison]

On Mon, Mar 20, 2023 at 07:28:08PM +0000, Rowland Penny via samba wrote:

>If I understand you correctly, the SeChangeNotifyPrivilege can never 
>work the same on Linux as it does on Windows, where it seems users 
>with the privilege can walk the path even if they don't actually have 
>permission to do so (according to the ACL's).

Kind of. We could emulate it in userspace by checking
the re-walking the path every time we get an EACCES
error to check if the 'x' bit was missing on a directory,
but this is a boatload of work that we so far have essentially
ignored as it's just too hard to make Samba precicely
match Windows in this case.