cifs: Retain old ACEs when converting between mode bits and ACL.
When cifsacl mount option is used, retain the ACEs which should not be modified during chmod. Following is the approach taken: 1. Retain all explicit (non-inherited) ACEs, unless the SID is one of owner/group/everyone/authenticated-users. We're going to set new ACEs for these SIDs anyways. 2. At the end of the list of explicit ACEs, place the new list of ACEs obtained by necessary conversion/encoding. 3. Once the converted/encoded ACEs are set, copy all the remaining ACEs (inherited) into the new ACL. Signed-off-by:Shyam Prasad N <sprasad@microsoft.com> Signed-off-by:
Steve French <stfrench@microsoft.com>
parent
c12ead71
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