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/*++
Copyright (c) Microsoft Corporation. All rights reserved
Abstract:
Monitor Sample driver IO control routines
Environment:
Kernel mode
--*/
#include <ntddk.h>
#include <wdf.h>
#include <fwpmk.h>
#pragma warning(push)
#pragma warning(disable:4201) // unnamed struct/union
#include <fwpsk.h>
#pragma warning(pop)
#include "ioctl.h"
#include "msnmntr.h"
#include "ctl.h"
#include "notify.h"
//
// Software Tracing Definitions
//
#define WPP_CONTROL_GUIDS \
WPP_DEFINE_CONTROL_GUID(MsnMntrCtl,(eab718af, 52de, 477c, 874d, cb49746bb131), \
WPP_DEFINE_BIT(TRACE_INIT) \
WPP_DEFINE_BIT(TRACE_DEVICE_CONTROL) \
WPP_DEFINE_BIT(TRACE_STATE) )
#include "ctl.tmh"
EVT_WDF_IO_QUEUE_IO_DEVICE_CONTROL MonitorEvtDeviceControl;
NTSTATUS
MonitorCtlDriverInit(
_In_ WDFDEVICE* pDevice
)
/*++
Routine Description:
Initializes the request queue for our driver. This is how
DeviceIoControl requests are sent to KMDF drivers.
Arguments:
[in] WDFDEVICE* pDevice - Our device.
--*/
{
NTSTATUS status;
WDF_IO_QUEUE_CONFIG queueConfig;
DoTraceMessage(TRACE_INIT, "MonitorSample Control Initialization in progress.");
WDF_IO_QUEUE_CONFIG_INIT_DEFAULT_QUEUE(
&queueConfig,
WdfIoQueueDispatchSequential
);
queueConfig.EvtIoDeviceControl = MonitorEvtDeviceControl;
status = WdfIoQueueCreate(
*pDevice,
&queueConfig,
WDF_NO_OBJECT_ATTRIBUTES,
NULL
);
return status;
}
VOID
MonitorEvtDeviceControl (
_In_ WDFQUEUE Queue,
_In_ WDFREQUEST Request,
_In_ size_t OutputBufferLength,
_In_ size_t InputBufferLength,
_In_ ULONG IoControlCode
)
/*++
Handles device IO control requests. This callback drives all communication
between the usermode exe and this driver.
--*/
{
NTSTATUS status = STATUS_SUCCESS;
UNREFERENCED_PARAMETER(Queue);
UNREFERENCED_PARAMETER(OutputBufferLength);
DoTraceMessage(TRACE_DEVICE_CONTROL, "MonitorSample Dispatch Device Control: 0x%x", IoControlCode);
switch (IoControlCode)
{
case MONITOR_IOCTL_ENABLE_MONITOR:
{
WDFMEMORY pMemory;
void* pBuffer;
if (InputBufferLength < sizeof(MONITOR_SETTINGS))
{
status = STATUS_INVALID_PARAMETER;
}
else
{
status = WdfRequestRetrieveInputMemory(Request, &pMemory);
if (NT_SUCCESS(status))
{
pBuffer = WdfMemoryGetBuffer(pMemory, NULL);
status = MonitorCoEnableMonitoring((MONITOR_SETTINGS*) pBuffer);
}
}
break;
}
case MONITOR_IOCTL_DISABLE_MONITOR:
{
status = STATUS_SUCCESS;
MonitorCoDisableMonitoring();
break;
}
default:
{
status = STATUS_INVALID_PARAMETER;
}
}
WdfRequestComplete(Request, status);
}
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