GetAclInformation

[DllImport("Advapi32.dll", SetLastError = true)][return: MarshalAs(UnmanagedType.Bool)]
public static extern bool GetAclInformation(
   IntPtr pAcl,
   ref ACL_SIZE_INFORMATION pAclInformation,
   uint nAclInformationLength,
   ACL_INFORMATION_CLASS dwAclInformationClass
);

Microsoft documentation: Link

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