fbtwmi.h File Reference

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Functions
NTSTATUS NTAPI	FreeBT_WmiRegistration (IN OUT PDEVICE_EXTENSION DeviceExtension)
NTSTATUS NTAPI	FreeBT_WmiDeRegistration (IN OUT PDEVICE_EXTENSION DeviceExtension)
NTSTATUS NTAPI	FreeBT_DispatchSysCtrl (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
NTSTATUS NTAPI	FreeBT_QueryWmiRegInfo (IN PDEVICE_OBJECT DeviceObject, OUT ULONG *RegFlags, OUT PUNICODE_STRING InstanceName, OUT PUNICODE_STRING *RegistryPath, OUT PUNICODE_STRING MofResourceName, OUT PDEVICE_OBJECT *Pdo)
NTSTATUS NTAPI	FreeBT_SetWmiDataItem (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN ULONG GuidIndex, IN ULONG InstanceIndex, IN ULONG DataItemId, IN ULONG BufferSize, IN PUCHAR Buffer)
NTSTATUS NTAPI	FreeBT_SetWmiDataBlock (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN ULONG GuidIndex, IN ULONG InstanceIndex, IN ULONG BufferSize, IN PUCHAR Buffer)
NTSTATUS NTAPI	FreeBT_QueryWmiDataBlock (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN ULONG GuidIndex, IN ULONG InstanceIndex, IN ULONG InstanceCount, IN OUT PULONG InstanceLengthArray, IN ULONG OutBufferSize, OUT PUCHAR Buffer)
PCHAR NTAPI	WMIMinorFunctionString (UCHAR MinorFunction)

Function Documentation

FreeBT_DispatchSysCtrl()

NTSTATUS NTAPI FreeBT_DispatchSysCtrl	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp
	)

Definition at line 66 of file fbtwmi.c.

{
    PDEVICE_EXTENSION       deviceExtension;
    SYSCTL_IRP_DISPOSITION  disposition;
    NTSTATUS                ntStatus;
    PIO_STACK_LOCATION      irpStack;
 
    PAGED_CODE();
 
    irpStack = IoGetCurrentIrpStackLocation (Irp);
    deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
 
    FreeBT_DbgPrint(3, ("FBTUSB: "));
    FreeBT_DbgPrint(3, (WMIMinorFunctionString(irpStack->MinorFunction)));
    if (Removed == deviceExtension->DeviceState)
    {
        ntStatus = STATUS_DELETE_PENDING;
 
        Irp->IoStatus.Status = ntStatus;
        Irp->IoStatus.Information = 0;
        IoCompleteRequest(Irp, IO_NO_INCREMENT);
 
        return ntStatus;
 
    }
 
    FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_DispatchSysCtrl::"));
    FreeBT_IoIncrement(deviceExtension);
 
    ntStatus = WmiSystemControl(&deviceExtension->WmiLibInfo,
                                DeviceObject,
                                Irp,
                                &disposition);
 
    switch(disposition)
    {
        case IrpProcessed:
        {
            // This irp has been processed and may be completed or pending.
            break;
 
        }
 
        case IrpNotCompleted:
        {
            // This irp has not been completed, but has been fully processed.
            // we will complete it now
            IoCompleteRequest(Irp, IO_NO_INCREMENT);
            break;
 
        }
 
        case IrpForward:
        case IrpNotWmi:
        {
            // This irp is either not a WMI irp or is a WMI irp targeted
            // at a device lower in the stack.
            IoSkipCurrentIrpStackLocation (Irp);
            ntStatus = IoCallDriver(deviceExtension->TopOfStackDeviceObject, Irp);
            break;
        }
 
        default:
        {
            // We really should never get here, but if we do just forward....
            ASSERT(FALSE);
            IoSkipCurrentIrpStackLocation (Irp);
            ntStatus = IoCallDriver(deviceExtension->TopOfStackDeviceObject, Irp);
            break;
 
        }
 
    }
 
    FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_DispatchSysCtrl::"));
    FreeBT_IoDecrement(deviceExtension);
 
    return ntStatus;
 
}

Referenced by DriverEntry().

FreeBT_QueryWmiDataBlock()

NTSTATUS NTAPI FreeBT_QueryWmiDataBlock	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp,
		IN ULONG	GuidIndex,
		IN ULONG	InstanceIndex,
		IN ULONG	InstanceCount,
		IN OUT PULONG	InstanceLengthArray,
		IN ULONG	OutBufferSize,
		OUT PUCHAR	Buffer
	)

Definition at line 217 of file fbtwmi.c.

{
    PDEVICE_EXTENSION deviceExtension;
    NTSTATUS          ntStatus;
    ULONG             size;
    WCHAR             modelName[] = L"Aishverya\0\0";
    USHORT            modelNameLen;
 
    PAGED_CODE();
 
    FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_QueryWmiDataBlock: Entered\n"));
 
    size = 0;
    modelNameLen = (wcslen(modelName) + 1) * sizeof(WCHAR);
 
    // Only ever registers 1 instance per guid
    ASSERT((InstanceIndex == 0) && (InstanceCount == 1));
 
    deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
    switch (GuidIndex)
    {
    case WMI_FREEBT_DRIVER_INFORMATION:
        size = sizeof(ULONG) + modelNameLen + sizeof(USHORT);
        if (OutBufferSize < size )
        {
            FreeBT_DbgPrint(3, ("FBTUSB: OutBuffer too small\n"));
            ntStatus = STATUS_BUFFER_TOO_SMALL;
            break;
 
        }
 
        * (PULONG) Buffer = DebugLevel;
        Buffer += sizeof(ULONG);
 
        // put length of string ahead of string
        *((PUSHORT)Buffer) = modelNameLen;
        Buffer = (PUCHAR)Buffer + sizeof(USHORT);
        RtlCopyBytes((PVOID)Buffer, (PVOID)modelName, modelNameLen);
        *InstanceLengthArray = size ;
 
        ntStatus = STATUS_SUCCESS;
        break;
 
    default:
        ntStatus = STATUS_WMI_GUID_NOT_FOUND;
 
    }
 
    ntStatus = WmiCompleteRequest(DeviceObject,
                                Irp,
                                ntStatus,
                                size,
                                IO_NO_INCREMENT);
 
    FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_QueryWmiDataBlock: Leaving\n"));
 
    return ntStatus;
 
}

Referenced by FreeBT_WmiRegistration().

FreeBT_QueryWmiRegInfo()

NTSTATUS NTAPI FreeBT_QueryWmiRegInfo	(	IN PDEVICE_OBJECT	DeviceObject,
		OUT ULONG *	RegFlags,
		OUT PUNICODE_STRING	InstanceName,
		OUT PUNICODE_STRING *	RegistryPath,
		OUT PUNICODE_STRING	MofResourceName,
		OUT PDEVICE_OBJECT *	Pdo
	)

Definition at line 147 of file fbtwmi.c.

{
    PDEVICE_EXTENSION deviceExtension;
 
    PAGED_CODE();
 
    FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_QueryWmiRegInfo: Entered\n"));
 
    deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
 
    *RegFlags     = WMIREG_FLAG_INSTANCE_PDO;
    *RegistryPath = &Globals.FreeBT_RegistryPath;
    *Pdo          = deviceExtension->PhysicalDeviceObject;
    RtlInitUnicodeString(MofResourceName, MOFRESOURCENAME);
 
    FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_QueryWmiRegInfo: Leaving\n"));
 
    return STATUS_SUCCESS;
 
}

Referenced by FreeBT_WmiRegistration().

FreeBT_SetWmiDataBlock()

NTSTATUS NTAPI FreeBT_SetWmiDataBlock	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp,
		IN ULONG	GuidIndex,
		IN ULONG	InstanceIndex,
		IN ULONG	BufferSize,
		IN PUCHAR	Buffer
	)

Definition at line 427 of file fbtwmi.c.

{
    PDEVICE_EXTENSION deviceExtension;
    NTSTATUS          ntStatus;
    ULONG             info;
 
    PAGED_CODE();
 
    FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_SetWmiDataBlock: Entered\n"));
 
    deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
    info = 0;
 
    switch(GuidIndex)
    {
    case WMI_FREEBT_DRIVER_INFORMATION:
        if(BufferSize == sizeof(ULONG))
        {
            DebugLevel = *(PULONG) Buffer;
            ntStatus = STATUS_SUCCESS;
            info = sizeof(ULONG);
 
        }
 
        else
        {
            ntStatus = STATUS_INFO_LENGTH_MISMATCH;
 
        }
 
        break;
 
    default:
        ntStatus = STATUS_WMI_GUID_NOT_FOUND;
 
    }
 
    ntStatus = WmiCompleteRequest(DeviceObject,
                                Irp,
                                ntStatus,
                                info,
                                IO_NO_INCREMENT);
 
    FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_SetWmiDataBlock: Leaving\n"));
 
    return ntStatus;
 
}

Referenced by FreeBT_WmiRegistration().

FreeBT_SetWmiDataItem()

NTSTATUS NTAPI FreeBT_SetWmiDataItem	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp,
		IN ULONG	GuidIndex,
		IN ULONG	InstanceIndex,
		IN ULONG	DataItemId,
		IN ULONG	BufferSize,
		IN PUCHAR	Buffer
	)

Definition at line 327 of file fbtwmi.c.

{
    PDEVICE_EXTENSION deviceExtension;
    NTSTATUS          ntStatus;
    ULONG             info;
 
    PAGED_CODE();
 
    FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_SetWmiDataItem: Entered\n"));
 
    deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
    info = 0;
 
    switch(GuidIndex)
    {
    case WMI_FREEBT_DRIVER_INFORMATION:
        if(DataItemId == 1)
        {
            if(BufferSize == sizeof(ULONG))
            {
                DebugLevel = *((PULONG)Buffer);
                ntStatus = STATUS_SUCCESS;
                info = sizeof(ULONG);
 
            }
 
            else
            {
                ntStatus = STATUS_INFO_LENGTH_MISMATCH;
 
            }
 
        }
 
        else
        {
            ntStatus = STATUS_WMI_READ_ONLY;
 
        }
 
        break;
 
    default:
        ntStatus = STATUS_WMI_GUID_NOT_FOUND;
 
    }
 
    ntStatus = WmiCompleteRequest(DeviceObject,
                                Irp,
                                ntStatus,
                                info,
                                IO_NO_INCREMENT);
 
    FreeBT_DbgPrint(3, ("FBTUSB: FreeBT_SetWmiDataItem: Leaving\n"));
 
    return ntStatus;
 
}

Referenced by FreeBT_WmiRegistration().

FreeBT_WmiDeRegistration()

NTSTATUS NTAPI FreeBT_WmiDeRegistration

(

IN OUT PDEVICE_EXTENSION

DeviceExtension

)

Definition at line 59 of file fbtwmi.c.

{
    PAGED_CODE();
    return IoWMIRegistrationControl(DeviceExtension->FunctionalDeviceObject, WMIREG_ACTION_DEREGISTER);
 
}

Referenced by FreeBT_AddDevice(), and HandleRemoveDevice().

FreeBT_WmiRegistration()

NTSTATUS NTAPI FreeBT_WmiRegistration

(

IN OUT PDEVICE_EXTENSION

DeviceExtension

)

Definition at line 37 of file fbtwmi.c.

{
    NTSTATUS ntStatus;
 
    PAGED_CODE();
 
    DeviceExtension->WmiLibInfo.GuidCount = sizeof (FreeBTWmiGuidList) / sizeof (WMIGUIDREGINFO);
    DeviceExtension->WmiLibInfo.GuidList           = FreeBTWmiGuidList;
    DeviceExtension->WmiLibInfo.QueryWmiRegInfo    = FreeBT_QueryWmiRegInfo;
    DeviceExtension->WmiLibInfo.QueryWmiDataBlock  = FreeBT_QueryWmiDataBlock;
    DeviceExtension->WmiLibInfo.SetWmiDataBlock    = FreeBT_SetWmiDataBlock;
    DeviceExtension->WmiLibInfo.SetWmiDataItem     = FreeBT_SetWmiDataItem;
    DeviceExtension->WmiLibInfo.ExecuteWmiMethod   = NULL;
    DeviceExtension->WmiLibInfo.WmiFunctionControl = NULL;
 
    // Register with WMI
    ntStatus = IoWMIRegistrationControl(DeviceExtension->FunctionalDeviceObject, WMIREG_ACTION_REGISTER);
 
    return ntStatus;
 
}

Referenced by FreeBT_AddDevice().

WMIMinorFunctionString()

PCHAR NTAPI WMIMinorFunctionString

(

UCHAR

MinorFunction

)

Definition at line 509 of file fbtwmi.c.

{
    switch (MinorFunction)
    {
        case IRP_MN_CHANGE_SINGLE_INSTANCE:
            return "IRP_MN_CHANGE_SINGLE_INSTANCE\n";
 
        case IRP_MN_CHANGE_SINGLE_ITEM:
            return "IRP_MN_CHANGE_SINGLE_ITEM\n";
 
        case IRP_MN_DISABLE_COLLECTION:
            return "IRP_MN_DISABLE_COLLECTION\n";
 
        case IRP_MN_DISABLE_EVENTS:
            return "IRP_MN_DISABLE_EVENTS\n";
 
        case IRP_MN_ENABLE_COLLECTION:
            return "IRP_MN_ENABLE_COLLECTION\n";
 
        case IRP_MN_ENABLE_EVENTS:
            return "IRP_MN_ENABLE_EVENTS\n";
 
        case IRP_MN_EXECUTE_METHOD:
            return "IRP_MN_EXECUTE_METHOD\n";
 
        case IRP_MN_QUERY_ALL_DATA:
            return "IRP_MN_QUERY_ALL_DATA\n";
 
        case IRP_MN_QUERY_SINGLE_INSTANCE:
            return "IRP_MN_QUERY_SINGLE_INSTANCE\n";
 
        case IRP_MN_REGINFO:
            return "IRP_MN_REGINFO\n";
 
        default:
            return "IRP_MN_?????\n";
 
    }
 
}

Referenced by FreeBT_DispatchSysCtrl().