#ifndef _NTEXAPI_H
#if (PHNT_MODE != PHNT_MODE_KERNEL)
#if (PHNT_VERSION >= PHNT_WINDOWS_8)

/**
 * The NtUpdateWnfStateData routine updates the data associated with a WNF state name.
 *
 * \param StateName Pointer to the WNF_STATE_NAME to update.
 * \param Buffer Pointer to the data buffer to write.
 * \param Length Length, in bytes, of the data buffer.
 * \param TypeId Optional pointer to a WNF_TYPE_ID structure specifying the type of the state data.
 * \param ExplicitScope Optional pointer to a security identifier (SID) for explicit scope.
 * \param MatchingChangeStamp The change stamp to match for update.
 * \param CheckStamp If TRUE, the change stamp is checked before updating.
 * \return NTSTATUS Successful or errant status.
 */
NTSYSCALLAPI
NTSTATUS
NTAPI
NtUpdateWnfStateData(
    _In_ PCWNF_STATE_NAME StateName,
    _In_reads_bytes_opt_(Length) const VOID* Buffer,
    _In_opt_ ULONG Length,
    _In_opt_ PCWNF_TYPE_ID TypeId,
    _In_opt_ PCSID ExplicitScope,
    _In_ WNF_CHANGE_STAMP MatchingChangeStamp,
    _In_ LOGICAL CheckStamp
    );

#endif
#endif
#endif
View code on GitHub

#ifndef _NTZWAPI_H

NTSYSCALLAPI
NTSTATUS
NTAPI
ZwUpdateWnfStateData(
    _In_ PCWNF_STATE_NAME StateName,
    _In_reads_bytes_opt_(Length) const VOID* Buffer,
    _In_opt_ ULONG Length,
    _In_opt_ PCWNF_TYPE_ID TypeId,
    _In_opt_ const VOID* ExplicitScope,
    _In_ WNF_CHANGE_STAMP MatchingChangeStamp,
    _In_ LOGICAL CheckStamp
    );

#endif
View code on GitHub