BOOLEAN
RtlAreAllAccessesGranted(
  IN  ACCESS_MASK GrantedAccess,
  IN  ACCESS_MASK DesiredAccess
  );

Routine Description:

    This routine is used to check a desired access mask against a
    granted access mask.  It is used by the Object Management
    component when dereferencing a handle.

Arguments:

        GrantedAccess - Specifies the granted access mask.

        DesiredAccess - Specifies the desired access mask.

Return Value:

    BOOLEAN - TRUE if the GrantedAccess mask has all the bits set
        that the DesiredAccess mask has set.  That is, TRUE is
        returned if all of the desired accesses have been granted.