fbtwmi.c File Reference

#include "fbtusb.h"
#include "fbtpwr.h"
#include "fbtpnp.h"
#include "fbtdev.h"
#include "fbtrwr.h"
#include "fbtwmi.h"
#include "fbtusr.h"

Include dependency graph for fbtwmi.c:

Go to the source code of this file.

Macros
#define	MOFRESOURCENAME   L"MofResourceName"
#define	WMI_FREEBT_DRIVER_INFORMATION   0

Functions
	DEFINE_GUID (FREEBT_WMI_STD_DATA_GUID, 0x871B1A60, 0xD3EA, 0x4f2f, 0x81, 0x7b, 0x46, 0x5e, 0x44, 0x86, 0x7b, 0xf5)
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_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)
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)
PCHAR NTAPI	WMIMinorFunctionString (UCHAR MinorFunction)

Variables
WMIGUIDREGINFO	FreeBTWmiGuidList [1]

Macro Definition Documentation

MOFRESOURCENAME

#define MOFRESOURCENAME   L"MofResourceName"

Definition at line 22 of file fbtwmi.c.

WMI_FREEBT_DRIVER_INFORMATION

#define WMI_FREEBT_DRIVER_INFORMATION   0

Definition at line 24 of file fbtwmi.c.

Function Documentation

DEFINE_GUID()

DEFINE_GUID	(	FREEBT_WMI_STD_DATA_GUID	,
		0x871B1A60	,
		0xD3EA	,
		0x4f2f	,
		0x81	,
		0x7b	,
		0x46	,
		0x5e	,
		0x44	,
		0x86	,
		0x7b	,
		0xf5
	)

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().

Variable Documentation

FreeBTWmiGuidList

WMIGUIDREGINFO FreeBTWmiGuidList[1]

Initial value:

=
{
    {
        &FREEBT_WMI_STD_DATA_GUID, 1, 0 
 
    }
 
}

Definition at line 28 of file fbtwmi.c.

Referenced by FreeBT_WmiRegistration().