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ICACLS reset - all permissions get stripped

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Applies to

Issue

When resetting ACLs using ICACLS /RESET on a CIFS share, all permissions as well as the owner, gets removed. 

These are the ACLs and DACL before resetting permissions

cluster1::*> vserver security file-directory show -vserver DataSvm1 -path  /vol01

                Vserver: DataSvm1
              File Path: /vol01
      File Inode Number: 64
         Security Style: ntfs
        Effective Style: ntfs
         DOS Attributes: 10
 DOS Attributes in Text: ----D---
Expanded Dos Attributes: -
           UNIX User Id: 0
          UNIX Group Id: 0
         UNIX Mode Bits: 777
 UNIX Mode Bits in Text: rwxrwxrwx
                   ACLs: NTFS Security Descriptor
                         Control:0x8004
                         Owner:BUILTIN\Administrators
                         Group:BUILTIN\Administrators
                         DACL - ACEs
                           ALLOW-Everyone-0x1f01ff
                           ALLOW-Everyone-0x10000000-OI|CI|IO <<<<<<< This DACL has 2 ACEs

 

The following command, from a Windows client, strips all permissions from the CIFS share named "cifsShare01"

PS C:\Windows\system32> ICACLS \\10.10.21.22\cifsShare01 /Q /C /T /RESET


After resetting permissions at the root of the share, the following can be seen:

cluster1::*> vserver security file-directory show -vserver DataSvm1 -path  /vol01

                Vserver: DataSvm1
              File Path: /vol01
      File Inode Number: 64
         Security Style: ntfs
        Effective Style: ntfs
         DOS Attributes: 10
 DOS Attributes in Text: ----D---
Expanded Dos Attributes: -
           UNIX User Id: 0
          UNIX Group Id: 0
         UNIX Mode Bits: 0
 UNIX Mode Bits in Text: ---------
                   ACLs: NTFS Security Descriptor
                         Control:0x8514
                         Owner:BUILTIN\Administrators
                         Group:BUILTIN\Administrators
                                                    <<<<<<< Notice how all ACEs were removed from the DACL

 

Microsoft explains the following in DACLs and ACEs:

"If there are no ACEs in the DACL, the system does not allow access to anyone"

 

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