#ifndef _NTLPCAPI_H
// begin_private

/**
 * The NtAlpcSendWaitReceivePort routine sends and/or receives an ALPC message.
 *
 * \param PortHandle Handle to the ALPC port.
 * \param Flags Message flags (e.g., synchronous request, reply).
 * \param SendMessage Optional pointer to the message to be sent.
 * \param SendMessageAttributes Optional message attributes sent with the request.
 * \param ReceiveMessage Optional pointer to a buffer to receive the next message.
 * \param BufferLength Optional size of the receive buffer.
 * \param ReceiveMessageAttributes Optional message attributes received with the message.
 * \param Timeout Optional timeout for the wait.
 * \return NTSTATUS Successful or errant status.
 */
_Kernel_entry_
NTSYSCALLAPI
NTSTATUS
NTAPI
NtAlpcSendWaitReceivePort(
    _In_ HANDLE PortHandle,
    _In_ ALPC_MESSAGE_FLAGS Flags,
    _In_reads_bytes_opt_(SendMessage->u1.s1.TotalLength) PPORT_MESSAGE SendMessage,
    _Inout_opt_ PALPC_MESSAGE_ATTRIBUTES SendMessageAttributes,
    _Out_writes_bytes_to_opt_(*BufferLength, *BufferLength) PPORT_MESSAGE ReceiveMessage,
    _Inout_opt_ PSIZE_T BufferLength,
    _Inout_opt_ PALPC_MESSAGE_ATTRIBUTES ReceiveMessageAttributes,
    _In_opt_ PLARGE_INTEGER Timeout
    );

// end_private
#endif
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#ifndef _NTZWAPI_H

_Kernel_entry_
NTSYSCALLAPI
NTSTATUS
NTAPI
ZwAlpcSendWaitReceivePort(
    _In_ HANDLE PortHandle,
    _In_ ULONG Flags,
    _In_reads_bytes_opt_(SendMessage->u1.s1.TotalLength) PPORT_MESSAGE SendMessage,
    _Inout_opt_ PALPC_MESSAGE_ATTRIBUTES SendMessageAttributes,
    _Out_writes_bytes_to_opt_(*BufferLength, *BufferLength) PPORT_MESSAGE ReceiveMessage,
    _Inout_opt_ PSIZE_T BufferLength,
    _Inout_opt_ PALPC_MESSAGE_ATTRIBUTES ReceiveMessageAttributes,
    _In_opt_ PLARGE_INTEGER Timeout
    );

#endif
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