- 1 year ago
Windows OS-Sample example of Windows Firmware Update Driver
A Windows Firmware Update Driver is responsible for updating the firmware of a hardware device in the Windows operating system. Here's a sample example of a Windows Firmware Update Driver written in C:
c#include <ntddk.h>
// DriverEntry function
NTSTATUS DriverEntry(_In_ PDRIVER_OBJECT DriverObject, _In_ PUNICODE_STRING RegistryPath)
{
UNREFERENCED_PARAMETER(RegistryPath);
DriverObject->DriverUnload = DriverUnload;
// Register the dispatch functions
DriverObject->MajorFunction[IRP_MJ_CREATE] = DriverCreate;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = DriverClose;
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = DriverDeviceControl;
// Perform firmware update
PerformFirmwareUpdate();
return STATUS_SUCCESS;
}
// Driver unload function
VOID DriverUnload(_In_ PDRIVER_OBJECT DriverObject)
{
UNREFERENCED_PARAMETER(DriverObject);
// Cleanup resources if necessary
}
// IRP_MJ_CREATE dispatch function
NTSTATUS DriverCreate(_In_ PDEVICE_OBJECT DeviceObject, _In_ PIRP Irp)
{
UNREFERENCED_PARAMETER(DeviceObject);
// Handle create request if necessary
// Complete the IRP
Irp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
// IRP_MJ_CLOSE dispatch function
NTSTATUS DriverClose(_In_ PDEVICE_OBJECT DeviceObject, _In_ PIRP Irp)
{
UNREFERENCED_PARAMETER(DeviceObject);
// Handle close request if necessary
// Complete the IRP
Irp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
// IRP_MJ_DEVICE_CONTROL dispatch function
NTSTATUS DriverDeviceControl(_In_ PDEVICE_OBJECT DeviceObject, _In_ PIRP Irp)
{
UNREFERENCED_PARAMETER(DeviceObject);
NTSTATUS status = STATUS_SUCCESS;
PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation(Irp);
ULONG ioControlCode = irpStack->Parameters.DeviceIoControl.IoControlCode;
// Handle device control requests if necessary
switch (ioControlCode)
{
// Example case for firmware update control code
case IOCTL_MY_FIRMWARE_UPDATE:
PerformFirmwareUpdate();
break;
default:
status = STATUS_INVALID_DEVICE_REQUEST;
break;
}
// Complete the IRP
Irp->IoStatus.Status = status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return status;
}
// Function to perform the firmware update
VOID PerformFirmwareUpdate()
{
// Code to perform the firmware update
}
In this example, the DriverEntry
function is the entry point of the driver, which is responsible for initializing the driver and registering the dispatch functions for handling various IRP (I/O Request Packet) requests. The DriverUnload
function is used for driver cleanup and resource release.
The dispatch functions (DriverCreate
, DriverClose
, and DriverDeviceControl
) handle the respective IRP requests and perform necessary actions. The DriverDeviceControl
function includes an example case for a firmware update control code (IOCTL_MY_FIRMWARE_UPDATE
), where the PerformFirmwareUpdate
function is called to perform the actual firmware update.
Please note that this is a simplified example, and in a real-world scenario, you would need to implement additional error handling, device enumeration, and other required functionality based on your specific hardware device and firmware update requirements.