RtlAddMandatoryAce - NtDoc

#ifndef _NTRTL_H
#if (PHNT_VERSION >= PHNT_VISTA)

// private
NTSYSAPI
NTSTATUS
NTAPI
RtlAddMandatoryAce(
    _Inout_ PACL Acl,
    _In_ ULONG AceRevision,
    _In_ ULONG AceFlags,
    _In_ PSID Sid,
    _In_ UCHAR AceType,
    _In_ ACCESS_MASK AccessMask
    );

#endif
#endif
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