diskwmi.c File Reference

#include "disk.h"

Include dependency graph for diskwmi.c:

Go to the source code of this file.

Macros
#define	DiskGeometryGuid   0
#define	SmartStatusGuid   1
#define	SmartDataGuid   2
#define	SmartPerformFunction   3
#define	AllowDisallowPerformanceHit   1
#define	EnableDisableHardwareFailurePrediction   2
#define	EnableDisableFailurePredictionPolling   3
#define	GetFailurePredictionCapability   4
#define	EnableOfflineDiags   5
#define	SmartEventGuid   4
#define	SmartThresholdsGuid   5
#define	ScsiInfoExceptionsGuid   6
#define	DiskReadSmartData(FdoExtension, SrbControl, BufferSize)
#define	DiskReadSmartThresholds(FdoExtension, SrbControl, BufferSize)
#define	DiskReadSmartStatus(FdoExtension, SrbControl, BufferSize)
#define	DiskGetIdentifyData(FdoExtension, SrbControl, BufferSize)

Functions
NTSTATUS	DiskSendFailurePredictIoctl (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, PSTORAGE_PREDICT_FAILURE checkFailure)
NTSTATUS	DiskGetIdentifyInfo (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, PBOOLEAN SupportSmart)
NTSTATUS	DiskDetectFailurePrediction (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, PFAILURE_PREDICTION_METHOD FailurePredictCapability, BOOLEAN ScsiAddressAvailable)
NTSTATUS	DiskReadFailurePredictThresholds (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, PSTORAGE_FAILURE_PREDICT_THRESHOLDS DiskSmartThresholds)
NTSTATUS	DiskReadSmartLog (IN PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, IN UCHAR SectorCount, IN UCHAR LogAddress, OUT PUCHAR Buffer)
NTSTATUS	DiskWriteSmartLog (IN PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, IN UCHAR SectorCount, IN UCHAR LogAddress, IN PUCHAR Buffer)
static NTSTATUS	DiskEnableSmart (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension)
static NTSTATUS	DiskDisableSmart (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension)
_inline NTSTATUS	DiskEnableSmartAttributeAutosave (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension)
_inline NTSTATUS	DiskDisableSmartAttributeAutosave (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension)
static NTSTATUS	DiskExecuteSmartDiagnostics (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, UCHAR Subcommand)
NTSTATUS	DiskPerformSmartCommand (IN PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, IN ULONG SrbControlCode, IN UCHAR Command, IN UCHAR Feature, IN UCHAR SectorCount, IN UCHAR SectorNumber, IN OUT PSRB_IO_CONTROL SrbControl, OUT PULONG BufferSize)
NTSTATUS	DiskGetModePage (_In_ PDEVICE_OBJECT Fdo, _In_ UCHAR PageMode, _In_ UCHAR PageControl, _In_ PMODE_PARAMETER_HEADER ModeData, _Inout_ PULONG ModeDataSize, _Out_ PVOID *PageData)
NTSTATUS	DiskEnableInfoExceptions (_In_ PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, _In_ BOOLEAN Enable)
NTSTATUS	DiskEnableDisableFailurePrediction (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, BOOLEAN Enable)
NTSTATUS	DiskEnableDisableFailurePredictPolling (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, BOOLEAN Enable, ULONG PollTimeInSeconds)
NTSTATUS	DiskReadFailurePredictStatus (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, PSTORAGE_FAILURE_PREDICT_STATUS DiskSmartStatus)
NTSTATUS	DiskReadFailurePredictData (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension, PSTORAGE_FAILURE_PREDICT_DATA DiskSmartData)
VOID NTAPI	DiskReregWorker (IN PDEVICE_OBJECT DevObject, IN PVOID Context)
NTSTATUS	DiskInitializeReregistration (VOID)
NTSTATUS	DiskPostReregisterRequest (PDEVICE_OBJECT DeviceObject, PIRP Irp)
NTSTATUS NTAPI	DiskInfoExceptionComplete (PDEVICE_OBJECT DeviceObject, PIRP Irp, PVOID Context)
NTSTATUS	DiskInfoExceptionCheck (PFUNCTIONAL_DEVICE_EXTENSION FdoExtension)
NTSTATUS NTAPI	DiskWmiFunctionControl (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN ULONG GuidIndex, IN CLASSENABLEDISABLEFUNCTION Function, IN BOOLEAN Enable)
NTSTATUS NTAPI	DiskFdoQueryWmiRegInfo (IN PDEVICE_OBJECT DeviceObject, OUT ULONG *RegFlags, OUT PUNICODE_STRING InstanceName)
NTSTATUS NTAPI	DiskFdoQueryWmiRegInfoEx (IN PDEVICE_OBJECT DeviceObject, OUT ULONG *RegFlags, OUT PUNICODE_STRING InstanceName, OUT PUNICODE_STRING MofName)
NTSTATUS NTAPI	DiskFdoQueryWmiDataBlock (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN ULONG GuidIndex, IN ULONG BufferAvail, OUT PUCHAR Buffer)
NTSTATUS NTAPI	DiskFdoSetWmiDataBlock (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN ULONG GuidIndex, IN ULONG BufferSize, IN PUCHAR Buffer)
NTSTATUS NTAPI	DiskFdoSetWmiDataItem (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN ULONG GuidIndex, IN ULONG DataItemId, IN ULONG BufferSize, IN PUCHAR Buffer)
NTSTATUS NTAPI	DiskFdoExecuteWmiMethod (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN ULONG GuidIndex, IN ULONG MethodId, IN ULONG InBufferSize, IN ULONG OutBufferSize, IN PUCHAR Buffer)

Variables
IO_WORKITEM_ROUTINE	DiskReregWorker
IO_COMPLETION_ROUTINE	DiskInfoExceptionComplete
SINGLE_LIST_ENTRY	DiskReregHead
KSPIN_LOCK	DiskReregSpinlock
LONG	DiskReregWorkItems
GUIDREGINFO	DiskWmiFdoGuidList []
GUID	DiskPredictFailureEventGuid = WMI_STORAGE_PREDICT_FAILURE_EVENT_GUID

Macro Definition Documentation

AllowDisallowPerformanceHit

#define AllowDisallowPerformanceHit   1

Definition at line 144 of file diskwmi.c.

DiskGeometryGuid

#define DiskGeometryGuid   0

Definition at line 140 of file diskwmi.c.

DiskGetIdentifyData

#define DiskGetIdentifyData	(		FdoExtension,
			SrbControl,
			BufferSize
	)

Value:

DiskPerformSmartCommand(FdoExtension,                               \
                            IOCTL_SCSI_MINIPORT_IDENTIFY,               \
                            ID_CMD,                                     \
                            0,                                          \
                            0,                                          \
                            0,                                          \
                            (SrbControl),                               \
                            (BufferSize))

Definition at line 254 of file diskwmi.c.

DiskReadSmartData

#define DiskReadSmartData	(		FdoExtension,
			SrbControl,
			BufferSize
	)

Value:

DiskPerformSmartCommand(FdoExtension,                               \
                            IOCTL_SCSI_MINIPORT_READ_SMART_ATTRIBS,     \
                            SMART_CMD,                                  \
                            READ_ATTRIBUTES,                            \
                            0,                                          \
                            0,                                          \
                            (SrbControl),                               \
                            (BufferSize))

Definition at line 200 of file diskwmi.c.

DiskReadSmartStatus

#define DiskReadSmartStatus	(		FdoExtension,
			SrbControl,
			BufferSize
	)

Value:

DiskPerformSmartCommand(FdoExtension,                               \
                            IOCTL_SCSI_MINIPORT_RETURN_STATUS,          \
                            SMART_CMD,                                  \
                            RETURN_SMART_STATUS,                        \
                            0,                                          \
                            0,                                          \
                            (SrbControl),                               \
                            (BufferSize))

Definition at line 236 of file diskwmi.c.

DiskReadSmartThresholds

#define DiskReadSmartThresholds	(		FdoExtension,
			SrbControl,
			BufferSize
	)

Value:

DiskPerformSmartCommand(FdoExtension,                               \
                            IOCTL_SCSI_MINIPORT_READ_SMART_THRESHOLDS,  \
                            SMART_CMD,                                  \
                            READ_THRESHOLDS,                            \
                            0,                                          \
                            0,                                          \
                            (SrbControl),                               \
                            (BufferSize))

Definition at line 218 of file diskwmi.c.

EnableDisableFailurePredictionPolling

#define EnableDisableFailurePredictionPolling   3

Definition at line 146 of file diskwmi.c.

EnableDisableHardwareFailurePrediction

#define EnableDisableHardwareFailurePrediction   2

Definition at line 145 of file diskwmi.c.

EnableOfflineDiags

#define EnableOfflineDiags   5

Definition at line 148 of file diskwmi.c.

GetFailurePredictionCapability

#define GetFailurePredictionCapability   4

Definition at line 147 of file diskwmi.c.

ScsiInfoExceptionsGuid

#define ScsiInfoExceptionsGuid   6

Definition at line 152 of file diskwmi.c.

SmartDataGuid

#define SmartDataGuid   2

Definition at line 142 of file diskwmi.c.

SmartEventGuid

#define SmartEventGuid   4

Definition at line 150 of file diskwmi.c.

SmartPerformFunction

#define SmartPerformFunction   3

Definition at line 143 of file diskwmi.c.

SmartStatusGuid

#define SmartStatusGuid   1

Definition at line 141 of file diskwmi.c.

SmartThresholdsGuid

#define SmartThresholdsGuid   5

Definition at line 151 of file diskwmi.c.

Function Documentation

DiskDetectFailurePrediction()

NTSTATUS DiskDetectFailurePrediction	(	PFUNCTIONAL_DEVICE_EXTENSION	FdoExtension,
		PFAILURE_PREDICTION_METHOD	FailurePredictCapability,
		BOOLEAN	ScsiAddressAvailable
	)

Definition at line 2230 of file diskwmi.c.

{
    PCOMMON_DEVICE_EXTENSION commonExtension = (PCOMMON_DEVICE_EXTENSION)FdoExtension;
    PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
    BOOLEAN supportFP;
    NTSTATUS status;
    STORAGE_PREDICT_FAILURE checkFailure;
    STORAGE_FAILURE_PREDICT_STATUS diskSmartStatus;

    PAGED_CODE();

    //
    // Assume no failure predict mechanisms
    //
    *FailurePredictCapability = FailurePredictionNone;

    //
    // See if this is an IDE drive that supports SMART. If so enable SMART
    // and then ensure that it suports the SMART READ STATUS command
    //

    if (ScsiAddressAvailable)
    {
        DiskGetIdentifyInfo(FdoExtension, &supportFP);

        if (supportFP)
        {
            status = DiskEnableSmart(FdoExtension);
            if (NT_SUCCESS(status))
            {
                *FailurePredictCapability = FailurePredictionSmart;
                diskData->FailurePredictionEnabled = TRUE;

                status = DiskReadFailurePredictStatus(FdoExtension,
                                                  &diskSmartStatus);

                TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: Device %p %s IDE SMART\n",
                           FdoExtension->DeviceObject,
                           NT_SUCCESS(status) ? "does" : "does not"));

                if (!NT_SUCCESS(status))
                {
                    *FailurePredictCapability = FailurePredictionNone;
                    diskData->FailurePredictionEnabled = FALSE;
                }
            }
            return(status);
        }
    }
    //
    // See if there is a a filter driver to intercept
    // IOCTL_STORAGE_PREDICT_FAILURE
    //
    status = DiskSendFailurePredictIoctl(FdoExtension,
                                         &checkFailure);

    TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: Device %p %s IOCTL_STORAGE_FAILURE_PREDICT\n",
                       FdoExtension->DeviceObject,
                       NT_SUCCESS(status) ? "does" : "does not"));

    if (NT_SUCCESS(status))
    {
        *FailurePredictCapability = FailurePredictionIoctl;
        diskData->FailurePredictionEnabled = TRUE;
        if (checkFailure.PredictFailure)
        {
            checkFailure.PredictFailure = 512;
            ClassNotifyFailurePredicted(FdoExtension,
                                        (PUCHAR)&checkFailure,
                                        sizeof(checkFailure),
                                        (BOOLEAN)(FdoExtension->FailurePredicted == FALSE),
                                        0x11,
                                        diskData->ScsiAddress.PathId,
                                        diskData->ScsiAddress.TargetId,
                                        diskData->ScsiAddress.Lun);

            FdoExtension->FailurePredicted = TRUE;
        }
        return(status);
    }

    //
    // Finally we assume it will not be a scsi smart drive. but
    // we'll also send off an asynchronous mode sense so that if
    // it is SMART we'll reregister the device object
    //

    *FailurePredictCapability = FailurePredictionNone;

    DiskInfoExceptionCheck(FdoExtension);

    return(STATUS_SUCCESS);
}

Referenced by DiskInitFdo().

DiskDisableSmart()

static NTSTATUS DiskDisableSmart ( PFUNCTIONAL_DEVICE_EXTENSION  FdoExtension )

static

Definition at line 293 of file diskwmi.c.

{
    UCHAR srbControl[sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDINPARAMS)] = {0};
    ULONG bufferSize = sizeof(srbControl);

    return DiskPerformSmartCommand(FdoExtension,
                                   IOCTL_SCSI_MINIPORT_DISABLE_SMART,
                                   SMART_CMD,
                                   DISABLE_SMART,
                                   0,
                                   0,
                                   (PSRB_IO_CONTROL)srbControl,
                                   &bufferSize);
}

Referenced by DiskEnableDisableFailurePrediction().

DiskDisableSmartAttributeAutosave()

_inline NTSTATUS DiskDisableSmartAttributeAutosave

(

PFUNCTIONAL_DEVICE_EXTENSION

FdoExtension

)

Definition at line 337 of file diskwmi.c.

{
    UCHAR srbControl[sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDINPARAMS)] = {0};
    ULONG bufferSize = sizeof(srbControl);

    return DiskPerformSmartCommand(FdoExtension,
                                   IOCTL_SCSI_MINIPORT_ENABLE_DISABLE_AUTOSAVE,
                                   SMART_CMD,
                                   ENABLE_DISABLE_AUTOSAVE,
                                   0x00,
                                   0,
                                   (PSRB_IO_CONTROL)srbControl,
                                   &bufferSize);
}

DiskEnableDisableFailurePrediction()

NTSTATUS DiskEnableDisableFailurePrediction	(	PFUNCTIONAL_DEVICE_EXTENSION	FdoExtension,
		BOOLEAN	Enable
	)

Definition at line 1126 of file diskwmi.c.

{
    NTSTATUS status;
    PCOMMON_DEVICE_EXTENSION commonExtension = &(FdoExtension->CommonExtension);
    PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);

    PAGED_CODE();

    switch(diskData->FailurePredictionCapability)
    {
        case FailurePredictionSmart:
        {
            if (Enable)
            {
                status = DiskEnableSmart(FdoExtension);
            } else {
                status = DiskDisableSmart(FdoExtension);
            }

            if (NT_SUCCESS(status)) {
                diskData->FailurePredictionEnabled = Enable;
            }

            break;
        }

        case  FailurePredictionSense:
        case  FailurePredictionIoctl:
        {
            //
            // We assume that the drive is already setup properly for
            // failure prediction
            //
            status = STATUS_SUCCESS;
            break;
        }

        default:
        {
            status = STATUS_INVALID_DEVICE_REQUEST;
        }
    }
    return status;
}

Referenced by DiskEnableDisableFailurePredictPolling(), DiskFdoExecuteWmiMethod(), DiskIoctlEnableFailurePrediction(), and DiskWmiFunctionControl().

DiskEnableDisableFailurePredictPolling()

NTSTATUS DiskEnableDisableFailurePredictPolling	(	PFUNCTIONAL_DEVICE_EXTENSION	FdoExtension,
		BOOLEAN	Enable,
		ULONG	PollTimeInSeconds
	)

Definition at line 1193 of file diskwmi.c.

{
    NTSTATUS status;
    PCOMMON_DEVICE_EXTENSION commonExtension = (PCOMMON_DEVICE_EXTENSION)FdoExtension;
    PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);

    PAGED_CODE();

    if (Enable)
    {
        status = DiskEnableDisableFailurePrediction(FdoExtension,
                                           Enable);
    } else {
        status = STATUS_SUCCESS;
    }

    if (NT_SUCCESS(status))
    {
        status = ClassSetFailurePredictionPoll(FdoExtension,
                        Enable ? diskData->FailurePredictionCapability :
                                 FailurePredictionNone,
                                     PollTimeInSeconds);

        //
        // Even if this failed we do not want to disable FP on the
        // hardware. FP is only ever disabled on the hardware by
        // specific command of the user.
        //
    }

    return status;
}

Referenced by DiskFdoExecuteWmiMethod(), DiskInitFdo(), and DiskWmiFunctionControl().

DiskEnableInfoExceptions()

NTSTATUS DiskEnableInfoExceptions	(	_In_ PFUNCTIONAL_DEVICE_EXTENSION	FdoExtension,
		_In_ BOOLEAN	Enable
	)

Definition at line 979 of file diskwmi.c.

{
    PDISK_DATA diskData = (PDISK_DATA)(FdoExtension->CommonExtension.DriverData);
    NTSTATUS status = STATUS_NOT_SUPPORTED;
    PMODE_PARAMETER_HEADER modeData;
    PMODE_INFO_EXCEPTIONS pageData;
    MODE_INFO_EXCEPTIONS changeablePageData;
    ULONG modeDataSize;

    PAGED_CODE();

    modeDataSize = MODE_DATA_SIZE;

    modeData = ExAllocatePoolWithTag(NonPagedPoolNxCacheAligned,
                                         modeDataSize,
                                         DISK_TAG_INFO_EXCEPTION);

    if (modeData == NULL) {

        TracePrint((TRACE_LEVEL_ERROR, TRACE_FLAG_WMI, "DiskEnableInfoExceptions: Unable to allocate mode "
                       "data buffer\n"));
        return STATUS_INSUFFICIENT_RESOURCES;
    }

    //
    // First see which data is actually changeable.
    //
    status = DiskGetModePage(FdoExtension->DeviceObject,
                             MODE_PAGE_FAULT_REPORTING,
                             1, // Page Control = 1 indicates we want changeable values.
                             modeData,
                             &modeDataSize,
                             (PVOID*)&pageData);

    if (!NT_SUCCESS(status) || pageData == NULL) {
        TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskEnableInfoExceptions: does NOT support SMART for device %p\n",
                  FdoExtension->DeviceObject));
        FREE_POOL(modeData);
        return STATUS_NOT_SUPPORTED;
    }

    TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskEnableInfoExceptions: DOES support SMART for device %p\n",
                FdoExtension->DeviceObject));

    //
    // At the very least, the DEXCPT bit must be changeable.
    // If it's not, bail out now.
    //
    if (pageData->Dexcpt == 0) {
        TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskEnableInfoExceptions: does NOT support DEXCPT bit for device %p\n",
                  FdoExtension->DeviceObject));
        FREE_POOL(modeData);
        return STATUS_NOT_SUPPORTED;
    }

    //
    // Cache away which values are changeable.
    //
    RtlCopyMemory(&changeablePageData, pageData, sizeof(MODE_INFO_EXCEPTIONS));

    //
    // Now get the current values.
    //
    status = DiskGetModePage(FdoExtension->DeviceObject,
                             MODE_PAGE_FAULT_REPORTING,
                             0, // Page Control = 0 indicates we want current values.
                             modeData,
                             &modeDataSize,
                             (PVOID*)&pageData);

    if (!NT_SUCCESS(status) || pageData == NULL) {
        //
        // At this point we know the device supports this mode page so
        // assert if something goes wrong here.
        //
        NT_ASSERT(NT_SUCCESS(status) && pageData);
        FREE_POOL(modeData);
        return STATUS_NOT_SUPPORTED;
    }

    //
    // If the device is currently configured to not report any informational
    // exceptions and we cannot change the value of that field, there's
    // nothing to be done.
    //
    if (pageData->ReportMethod == 0 && changeablePageData.ReportMethod == 0) {
        TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskEnableInfoExceptions: MRIE field is 0 and is not changeable for device %p\n",
                  FdoExtension->DeviceObject));
        FREE_POOL(modeData);
        return STATUS_NOT_SUPPORTED;
    }

    //
    // If the PERF bit is changeable, set it now.
    //
    if (changeablePageData.Perf) {
        pageData->Perf = diskData->AllowFPPerfHit ? 0 : 1;
    }

    //
    // If the MRIE field is changeable, set it to 4 so that informational
    // exceptions get reported with the "Recovered Error" sense key.
    //
    if (changeablePageData.ReportMethod) {
        pageData->ReportMethod = 4;
    }

    //
    // Finally, set the DEXCPT bit appropriately to enable/disable
    // informational exception reporting and send the Mode Select.
    //
    pageData->Dexcpt = !Enable;

    status = ClassModeSelect(FdoExtension->DeviceObject,
                                (PCHAR)modeData,
                                modeDataSize,
                                pageData->PSBit);

    //
    // Update the failure prediction state.  Note that for this particular
    // mode FailurePredictionNone is used when it's not enabled.
    //
    if (NT_SUCCESS(status)) {
        if (Enable) {
            diskData->FailurePredictionCapability = FailurePredictionSense;
            diskData->FailurePredictionEnabled = TRUE;
        } else {
            diskData->FailurePredictionCapability = FailurePredictionNone;
            diskData->FailurePredictionEnabled = FALSE;
        }
    }

    FREE_POOL(modeData);

    return status;
}

Referenced by DiskIoctlEnableFailurePrediction().

DiskEnableSmart()

static NTSTATUS DiskEnableSmart ( PFUNCTIONAL_DEVICE_EXTENSION  FdoExtension )

static

Definition at line 271 of file diskwmi.c.

{
    UCHAR srbControl[sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDINPARAMS)] = {0};
    ULONG bufferSize = sizeof(srbControl);

    return DiskPerformSmartCommand(FdoExtension,
                                   IOCTL_SCSI_MINIPORT_ENABLE_SMART,
                                   SMART_CMD,
                                   ENABLE_SMART,
                                   0,
                                   0,
                                   (PSRB_IO_CONTROL)srbControl,
                                   &bufferSize);
}

Referenced by DiskDetectFailurePrediction(), and DiskEnableDisableFailurePrediction().

DiskEnableSmartAttributeAutosave()

_inline NTSTATUS DiskEnableSmartAttributeAutosave

(

PFUNCTIONAL_DEVICE_EXTENSION

FdoExtension

)

Definition at line 315 of file diskwmi.c.

{
    UCHAR srbControl[sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDINPARAMS)] = {0};
    ULONG bufferSize = sizeof(srbControl);

    return DiskPerformSmartCommand(FdoExtension,
                                   IOCTL_SCSI_MINIPORT_ENABLE_DISABLE_AUTOSAVE,
                                   SMART_CMD,
                                   ENABLE_DISABLE_AUTOSAVE,
                                   0xf1,
                                   0,
                                   (PSRB_IO_CONTROL)srbControl,
                                   &bufferSize);
}

DiskExecuteSmartDiagnostics()

static NTSTATUS DiskExecuteSmartDiagnostics ( PFUNCTIONAL_DEVICE_EXTENSION  FdoExtension, UCHAR  Subcommand  )

static

Definition at line 359 of file diskwmi.c.

{
    UCHAR srbControl[sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDINPARAMS)] = {0};
    ULONG bufferSize = sizeof(srbControl);

    return DiskPerformSmartCommand(FdoExtension,
                                   IOCTL_SCSI_MINIPORT_EXECUTE_OFFLINE_DIAGS,
                                   SMART_CMD,
                                   EXECUTE_OFFLINE_DIAGS,
                                   0,
                                   Subcommand,
                                   (PSRB_IO_CONTROL)srbControl,
                                   &bufferSize);
}

Referenced by DiskFdoExecuteWmiMethod().

DiskFdoExecuteWmiMethod()

NTSTATUS NTAPI DiskFdoExecuteWmiMethod	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp,
		IN ULONG	GuidIndex,
		IN ULONG	MethodId,
		IN ULONG	InBufferSize,
		IN ULONG	OutBufferSize,
		IN PUCHAR	Buffer
	)

Definition at line 3045 of file diskwmi.c.

{
    PFUNCTIONAL_DEVICE_EXTENSION fdoExtension = DeviceObject->DeviceExtension;
    PCOMMON_DEVICE_EXTENSION commonExtension = DeviceObject->DeviceExtension;
    PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
    ULONG sizeNeeded = 0;
    NTSTATUS status;

    PAGED_CODE();

    TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskExecuteWmiMethod, DeviceObject %p, Irp %p, Guid Id %d, MethodId %d\n"
             "      InBufferSize %#x, OutBufferSize %#x, Buffer %p\n",
             DeviceObject, Irp,
             GuidIndex, MethodId, InBufferSize, OutBufferSize, Buffer));

    switch(GuidIndex)
    {
        case SmartPerformFunction:
        {

            NT_ASSERT((diskData->FailurePredictionCapability ==
                                                  FailurePredictionSmart) ||
                   (diskData->FailurePredictionCapability ==
                                                  FailurePredictionIoctl) ||
                   (diskData->FailurePredictionCapability ==
                                                  FailurePredictionSense));


            switch(MethodId)
            {
                //
                // void AllowPerformanceHit([in] boolean Allow)
                //
                case AllowDisallowPerformanceHit:
                {
                    BOOLEAN allowPerfHit;

                    sizeNeeded = 0;
                    if (InBufferSize >= sizeof(BOOLEAN))
                    {
                        status = STATUS_SUCCESS;

                        allowPerfHit = *((PBOOLEAN)Buffer);
                        if (diskData->AllowFPPerfHit != allowPerfHit)
                        {
                            diskData->AllowFPPerfHit = allowPerfHit;
                            if (diskData->FailurePredictionCapability ==
                                FailurePredictionSense)
                            {
                                MODE_INFO_EXCEPTIONS modeInfo;

                                status = DiskGetInfoExceptionInformation(fdoExtension,
                                                                         &modeInfo);
                                if (NT_SUCCESS(status))
                                {
                                    modeInfo.Perf = allowPerfHit ? 0 : 1;
                                    status = DiskSetInfoExceptionInformation(fdoExtension,
                                                                             &modeInfo);
                                }
                            }
                            else
                            {
                                status = STATUS_INVALID_DEVICE_REQUEST;
                            }
                        }

                        TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskFdoWmiExecuteMethod: AllowPerformanceHit %x for device %p --> %lx\n",
                                    allowPerfHit,
                                    fdoExtension->DeviceObject,
                                    status));
                    } else {
                        status = STATUS_INVALID_PARAMETER;
                    }
                    break;
                }

                //
                // void EnableDisableHardwareFailurePrediction([in] boolean Enable)
                //
                case EnableDisableHardwareFailurePrediction:
                {
                    BOOLEAN enable;

                    sizeNeeded = 0;
                    if (InBufferSize >= sizeof(BOOLEAN))
                    {
                        status = STATUS_SUCCESS;
                        enable = *((PBOOLEAN)Buffer);
                        if (!enable)
                        {
                            //
                            // If we are disabling we need to also disable
                            // polling
                            //
                            DiskEnableDisableFailurePredictPolling(
                                                               fdoExtension,
                                                               enable,
                                                               0);
                        }

                        status = DiskEnableDisableFailurePrediction(
                                                           fdoExtension,
                                                           enable);

                        TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskFdoWmiExecuteMethod: EnableDisableHardwareFailurePrediction: %x for device %p --> %lx\n",
                                    enable,
                                    fdoExtension->DeviceObject,
                                    status));
                    } else {
                        status = STATUS_INVALID_PARAMETER;
                    }
                    break;
                }

                //
                // void EnableDisableFailurePredictionPolling(
                //                               [in] uint32 Period,
                //                               [in] boolean Enable)
                //
                case EnableDisableFailurePredictionPolling:
                {
                    BOOLEAN enable;
                    ULONG period;

                    sizeNeeded = 0;
                    if (InBufferSize >= (sizeof(ULONG) + sizeof(BOOLEAN)))
                    {
                        period = *((PULONG)Buffer);
                        Buffer += sizeof(ULONG);
                        enable = *((PBOOLEAN)Buffer);

                           status = DiskEnableDisableFailurePredictPolling(
                                                               fdoExtension,
                                                               enable,
                                                               period);

                           TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskFdoWmiExecuteMethod: EnableDisableFailurePredictionPolling: %x %x for device %p --> %lx\n",
                                    enable,
                                    period,
                                    fdoExtension->DeviceObject,
                                    status));
                    } else {
                        status = STATUS_INVALID_PARAMETER;
                    }
                    break;
                }

                //
                // void GetFailurePredictionCapability([out] uint32 Capability)
                //
                case GetFailurePredictionCapability:
                {
                    sizeNeeded = sizeof(ULONG);
                    if (OutBufferSize >= sizeNeeded)
                    {
                        status = STATUS_SUCCESS;
                        *((PFAILURE_PREDICTION_METHOD)Buffer) = diskData->FailurePredictionCapability;
                        TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskFdoWmiExecuteMethod: GetFailurePredictionCapability: %x for device %p --> %lx\n",
                                    *((PFAILURE_PREDICTION_METHOD)Buffer),
                                    fdoExtension->DeviceObject,
                                    status));
                    } else {
                        status = STATUS_BUFFER_TOO_SMALL;
                    }
                    break;
                }

                //
                // void EnableOfflineDiags([out] boolean Success);
                //
                case EnableOfflineDiags:
                {
                    sizeNeeded = sizeof(BOOLEAN);
                    if (OutBufferSize >= sizeNeeded)
                    {
                        if (diskData->FailurePredictionCapability ==
                                  FailurePredictionSmart)
                        {
                            //
                            // Initiate or resume offline diagnostics.
                            // This may cause a loss of performance
                            // to the disk, but mayincrease the amount
                            // of disk checking.
                            //
                            status = DiskExecuteSmartDiagnostics(fdoExtension,
                                                                0);

                        } else {
                            status = STATUS_INVALID_DEVICE_REQUEST;
                        }

                        *((PBOOLEAN)Buffer) = NT_SUCCESS(status);

                        TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskFdoWmiExecuteMethod: EnableOfflineDiags for device %p --> %lx\n",
                                    fdoExtension->DeviceObject,
                                    status));
                    } else {
                        status = STATUS_BUFFER_TOO_SMALL;
                    }
                    break;
                }

                //
                //    void ReadLogSectors([in] uint8 LogAddress,
                //        [in] uint8 SectorCount,
                //        [out] uint32 Length,
                //        [out, WmiSizeIs("Length")] uint8 LogSectors[]
                //       );
                //
                case ReadLogSectors:
                {
                    if (diskData->FailurePredictionCapability ==
                                  FailurePredictionSmart)
                    {
                        if (InBufferSize >= sizeof(READ_LOG_SECTORS_IN))
                        {
                            PREAD_LOG_SECTORS_IN inParams;
                            PREAD_LOG_SECTORS_OUT outParams;
                            ULONG readSize;

                            inParams = (PREAD_LOG_SECTORS_IN)Buffer;
                            readSize = inParams->SectorCount * SMART_LOG_SECTOR_SIZE;
                            sizeNeeded = FIELD_OFFSET(READ_LOG_SECTORS_OUT,
                                                  LogSectors) + readSize;

                            if (OutBufferSize >= sizeNeeded)
                            {
                                outParams = (PREAD_LOG_SECTORS_OUT)Buffer;
                                status = DiskReadSmartLog(fdoExtension,
                                                        inParams->SectorCount,
                                                        inParams->LogAddress,
                                                        outParams->LogSectors);

                                if (NT_SUCCESS(status))
                                {
                                    outParams->Length = readSize;
                                } else {
                                    //
                                    // SMART command failure is
                                    // indicated by successful
                                    // execution, but no data returned
                                    //
                                    outParams->Length = 0;
                                    status = STATUS_SUCCESS;
                                }
                            } else {
                                status = STATUS_BUFFER_TOO_SMALL;
                            }

                        } else {
                            status = STATUS_INVALID_PARAMETER;
                        }
                    } else {
                        status = STATUS_INVALID_DEVICE_REQUEST;
                    }
                    break;
                }

                //    void WriteLogSectors([in] uint8 LogAddress,
                //        [in] uint8 SectorCount,
                //        [in] uint32 Length,
                //        [in, WmiSizeIs("Length")] uint8 LogSectors[],
                //        [out] boolean Success
                //       );
                case WriteLogSectors:
                {
                    if (diskData->FailurePredictionCapability ==
                                  FailurePredictionSmart)
                    {
                        if ((LONG)InBufferSize >= FIELD_OFFSET(WRITE_LOG_SECTORS_IN,
                                                        LogSectors))
                        {
                            PWRITE_LOG_SECTORS_IN inParams;
                            PWRITE_LOG_SECTORS_OUT outParams;
                            ULONG writeSize;

                            inParams = (PWRITE_LOG_SECTORS_IN)Buffer;
                            writeSize = inParams->SectorCount * SMART_LOG_SECTOR_SIZE;
                            if (InBufferSize >= (FIELD_OFFSET(WRITE_LOG_SECTORS_IN,
                                                             LogSectors) +
                                                 writeSize))
                            {
                                sizeNeeded = sizeof(WRITE_LOG_SECTORS_OUT);

                                if (OutBufferSize >= sizeNeeded)
                                {
                                    outParams = (PWRITE_LOG_SECTORS_OUT)Buffer;
                                    status = DiskWriteSmartLog(fdoExtension,
                                                        inParams->SectorCount,
                                                        inParams->LogAddress,
                                                        inParams->LogSectors);

                                    if (NT_SUCCESS(status))
                                    {
                                        outParams->Success = TRUE;
                                    } else {
                                        outParams->Success = FALSE;
                                        status = STATUS_SUCCESS;
                                    }
                                } else {
                                    status = STATUS_BUFFER_TOO_SMALL;
                                }
                            } else {
                                status = STATUS_INVALID_PARAMETER;
                            }
                        } else {
                            status = STATUS_INVALID_PARAMETER;
                        }
                    } else {
                        status = STATUS_INVALID_DEVICE_REQUEST;
                    }
                    break;
                }

                //    void ExecuteSelfTest([in] uint8 Subcommand,
                //         [out,
                //          Values{"0", "1", "2"},
                //          ValueMap{"Successful Completion",
                //                   "Captive Mode Required",
                //                   "Unsuccessful Completion"}
                //         ]
                //         uint32 ReturnCode);
                case ExecuteSelfTest:
                {
                    if (diskData->FailurePredictionCapability ==
                              FailurePredictionSmart)
                    {
                        if (InBufferSize >= sizeof(EXECUTE_SELF_TEST_IN))
                        {
                            sizeNeeded = sizeof(EXECUTE_SELF_TEST_OUT);
                            if (OutBufferSize >= sizeNeeded)
                            {
                                PEXECUTE_SELF_TEST_IN inParam;
                                PEXECUTE_SELF_TEST_OUT outParam;

                                inParam = (PEXECUTE_SELF_TEST_IN)Buffer;
                                outParam = (PEXECUTE_SELF_TEST_OUT)Buffer;

                                if (DiskIsValidSmartSelfTest(inParam->Subcommand))
                                {
                                   status = DiskExecuteSmartDiagnostics(fdoExtension,
                                                            inParam->Subcommand);
                                   if (NT_SUCCESS(status))
                                   {
                                       //
                                       // Return self test executed
                                       // without a problem
                                       //
                                       outParam->ReturnCode = 0;
                                   } else {
                                       //
                                       // Return Self test execution
                                       // failed status
                                       //
                                       outParam->ReturnCode = 2;
                                       status = STATUS_SUCCESS;
                                   }
                                } else {
                                    //
                                    // If self test subcommand requires
                                    // captive mode then return that
                                    // status
                                    //
                                    outParam->ReturnCode = 1;
                                    status = STATUS_SUCCESS;
                                }

                            } else {
                                status = STATUS_BUFFER_TOO_SMALL;
                            }

                        } else {
                            status = STATUS_INVALID_PARAMETER;
                        }
                    } else {
                        status = STATUS_INVALID_DEVICE_REQUEST;
                    }

                    break;
                }

                default :
                {
                    sizeNeeded = 0;
                    status = STATUS_WMI_ITEMID_NOT_FOUND;
                    break;
                }
            }

            break;
        }

        case DiskGeometryGuid:
        case SmartStatusGuid:
        case SmartDataGuid:
        case SmartEventGuid:
        case SmartThresholdsGuid:
        case ScsiInfoExceptionsGuid:
        {
            sizeNeeded = 0;
            status = STATUS_INVALID_DEVICE_REQUEST;
            break;
        }

        default:
        {
            sizeNeeded = 0;
            status = STATUS_WMI_GUID_NOT_FOUND;
        }
    }

    TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskExecuteMethod Device %p, Irp %p returns %lx\n",
             DeviceObject, Irp, status));

    status = ClassWmiCompleteRequest(DeviceObject,
                                     Irp,
                                     status,
                                     sizeNeeded,
                                     IO_NO_INCREMENT);

    return status;
}

Referenced by DriverEntry().

DiskFdoQueryWmiDataBlock()

NTSTATUS NTAPI DiskFdoQueryWmiDataBlock	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp,
		IN ULONG	GuidIndex,
		IN ULONG	BufferAvail,
		OUT PUCHAR	Buffer
	)

Definition at line 2638 of file diskwmi.c.

{
    NTSTATUS status;
    PFUNCTIONAL_DEVICE_EXTENSION fdoExtension = DeviceObject->DeviceExtension;
    PCOMMON_DEVICE_EXTENSION commonExtension = DeviceObject->DeviceExtension;
    PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
    ULONG sizeNeeded;

    PAGED_CODE();

    TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskQueryWmiDataBlock, Device %p, Irp %p, GuiIndex %d\n"
             "      BufferAvail %lx Buffer %p\n",
             DeviceObject, Irp,
             GuidIndex, BufferAvail, Buffer));

    switch (GuidIndex)
    {
        case DiskGeometryGuid:
        {
            sizeNeeded = sizeof(DISK_GEOMETRY);
            if (BufferAvail >= sizeNeeded)
            {
                if (DeviceObject->Characteristics & FILE_REMOVABLE_MEDIA)
                {
                    //
                    // Issue ReadCapacity to update device extension
                    // with information for current media.
                    status = DiskReadDriveCapacity(commonExtension->PartitionZeroExtension->DeviceObject);

                    //
                    // Note whether the drive is ready.
                    diskData->ReadyStatus = status;

                    if (!NT_SUCCESS(status))
                    {
                        break;
                    }
                }

                //
                // Copy drive geometry information from device extension.
                RtlMoveMemory(Buffer,
                              &(fdoExtension->DiskGeometry),
                              sizeof(DISK_GEOMETRY));

                status = STATUS_SUCCESS;
            } else {
                status = STATUS_BUFFER_TOO_SMALL;
            }
            break;
        }

        case SmartStatusGuid:
        {
            PSTORAGE_FAILURE_PREDICT_STATUS diskSmartStatus;

            NT_ASSERT(diskData->FailurePredictionCapability != FailurePredictionNone);

            sizeNeeded = sizeof(STORAGE_FAILURE_PREDICT_STATUS);
            if (BufferAvail >= sizeNeeded)
            {
                STORAGE_PREDICT_FAILURE checkFailure;

                diskSmartStatus = (PSTORAGE_FAILURE_PREDICT_STATUS)Buffer;

                status = DiskSendFailurePredictIoctl(fdoExtension,
                                                     &checkFailure);

                if (NT_SUCCESS(status))
                {
                    if (diskData->FailurePredictionCapability ==
                                                      FailurePredictionSense)
                    {
                        diskSmartStatus->Reason =  *((PULONG)checkFailure.VendorSpecific);
                    } else {
                        diskSmartStatus->Reason =  0; // unknown
                    }

                    diskSmartStatus->PredictFailure = (checkFailure.PredictFailure != 0);
                }
            } else {
                status = STATUS_BUFFER_TOO_SMALL;
            }
            break;
        }

        case SmartDataGuid:
        {
            PSTORAGE_FAILURE_PREDICT_DATA diskSmartData;

            NT_ASSERT((diskData->FailurePredictionCapability ==
                                                  FailurePredictionSmart) ||
                   (diskData->FailurePredictionCapability ==
                                                  FailurePredictionIoctl));

            sizeNeeded = sizeof(STORAGE_FAILURE_PREDICT_DATA);
            if (BufferAvail >= sizeNeeded)
            {
                PSTORAGE_PREDICT_FAILURE checkFailure = (PSTORAGE_PREDICT_FAILURE)Buffer;

                diskSmartData = (PSTORAGE_FAILURE_PREDICT_DATA)Buffer;

                status = DiskSendFailurePredictIoctl(fdoExtension,
                                                     checkFailure);

                if (NT_SUCCESS(status))
                {
                    diskSmartData->Length = 512;
                }
            } else {
                status = STATUS_BUFFER_TOO_SMALL;
            }

            break;
        }

        case SmartThresholdsGuid:
        {
            PSTORAGE_FAILURE_PREDICT_THRESHOLDS diskSmartThresholds;

            NT_ASSERT((diskData->FailurePredictionCapability ==
                                                  FailurePredictionSmart));

            sizeNeeded = sizeof(STORAGE_FAILURE_PREDICT_THRESHOLDS);
            if (BufferAvail >= sizeNeeded)
            {
                diskSmartThresholds = (PSTORAGE_FAILURE_PREDICT_THRESHOLDS)Buffer;
                status = DiskReadFailurePredictThresholds(fdoExtension,
                                                          diskSmartThresholds);
            } else {
                status = STATUS_BUFFER_TOO_SMALL;
            }

            break;
        }

        case SmartPerformFunction:
        {
            sizeNeeded = 0;
            status = STATUS_SUCCESS;
            break;
        }

        case ScsiInfoExceptionsGuid:
        {
            PSTORAGE_SCSI_INFO_EXCEPTIONS infoExceptions;
            MODE_INFO_EXCEPTIONS modeInfo;

            NT_ASSERT((diskData->FailurePredictionCapability ==
                                                  FailurePredictionSense));

            sizeNeeded = sizeof(STORAGE_SCSI_INFO_EXCEPTIONS);
            if (BufferAvail >= sizeNeeded)
            {
                infoExceptions = (PSTORAGE_SCSI_INFO_EXCEPTIONS)Buffer;
                status = DiskGetInfoExceptionInformation(fdoExtension,
                                                         &modeInfo);
                if (NT_SUCCESS(status))
                {
                    infoExceptions->PageSavable = modeInfo.PSBit;
                    infoExceptions->Flags = modeInfo.Flags;
                    infoExceptions->MRIE = modeInfo.ReportMethod;
                    infoExceptions->Padding = 0;
                    REVERSE_BYTES(&infoExceptions->IntervalTimer,
                                  &modeInfo.IntervalTimer);
                    REVERSE_BYTES(&infoExceptions->ReportCount,
                                  &modeInfo.ReportCount)
                }
            } else {
                status = STATUS_BUFFER_TOO_SMALL;
            }

            break;
        }

        default:
        {
            sizeNeeded = 0;
            status = STATUS_WMI_GUID_NOT_FOUND;
        }
    }
    TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskQueryWmiDataBlock Device %p, Irp %p returns %lx\n",
             DeviceObject, Irp, status));

    status = ClassWmiCompleteRequest(DeviceObject,
                                     Irp,
                                     status,
                                     sizeNeeded,
                                     IO_NO_INCREMENT);

    return status;
}

Referenced by DriverEntry().

DiskFdoQueryWmiRegInfo()

NTSTATUS NTAPI DiskFdoQueryWmiRegInfo	(	IN PDEVICE_OBJECT	DeviceObject,
		OUT ULONG *	RegFlags,
		OUT PUNICODE_STRING	InstanceName
	)

Definition at line 2479 of file diskwmi.c.

{
    PCOMMON_DEVICE_EXTENSION commonExtension = DeviceObject->DeviceExtension;
    PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);

    PAGED_CODE();
    UNREFERENCED_PARAMETER(InstanceName);

    SET_FLAG(DiskWmiFdoGuidList[SmartThresholdsGuid].Flags,  WMIREG_FLAG_REMOVE_GUID);
    SET_FLAG(DiskWmiFdoGuidList[ScsiInfoExceptionsGuid].Flags,  WMIREG_FLAG_REMOVE_GUID);

    switch (diskData->FailurePredictionCapability)
    {
        case FailurePredictionSmart:
        {
            CLEAR_FLAG(DiskWmiFdoGuidList[SmartThresholdsGuid].Flags,  WMIREG_FLAG_REMOVE_GUID);
            //
            // Fall Through
            //
        }
        case FailurePredictionIoctl:
        {
            CLEAR_FLAG(DiskWmiFdoGuidList[SmartStatusGuid].Flags,      WMIREG_FLAG_REMOVE_GUID);
            CLEAR_FLAG(DiskWmiFdoGuidList[SmartDataGuid].Flags,        WMIREG_FLAG_REMOVE_GUID);
            CLEAR_FLAG(DiskWmiFdoGuidList[SmartEventGuid].Flags,       WMIREG_FLAG_REMOVE_GUID);
            CLEAR_FLAG(DiskWmiFdoGuidList[SmartPerformFunction].Flags, WMIREG_FLAG_REMOVE_GUID);

            break;
        }

        case FailurePredictionSense:
        {
            CLEAR_FLAG(DiskWmiFdoGuidList[SmartStatusGuid].Flags,      WMIREG_FLAG_REMOVE_GUID);
            CLEAR_FLAG(DiskWmiFdoGuidList[SmartEventGuid].Flags,       WMIREG_FLAG_REMOVE_GUID);
            CLEAR_FLAG(DiskWmiFdoGuidList[SmartPerformFunction].Flags, WMIREG_FLAG_REMOVE_GUID);
            CLEAR_FLAG(DiskWmiFdoGuidList[ScsiInfoExceptionsGuid].Flags,  WMIREG_FLAG_REMOVE_GUID);
            SET_FLAG  (DiskWmiFdoGuidList[SmartDataGuid].Flags,        WMIREG_FLAG_REMOVE_GUID);
            break;
        }


        default:
        {
            SET_FLAG  (DiskWmiFdoGuidList[SmartStatusGuid].Flags,      WMIREG_FLAG_REMOVE_GUID);
            SET_FLAG  (DiskWmiFdoGuidList[SmartDataGuid].Flags,        WMIREG_FLAG_REMOVE_GUID);
            SET_FLAG  (DiskWmiFdoGuidList[SmartEventGuid].Flags,       WMIREG_FLAG_REMOVE_GUID);
            SET_FLAG  (DiskWmiFdoGuidList[SmartPerformFunction].Flags, WMIREG_FLAG_REMOVE_GUID);
            break;
        }
    }

    //
    // Use devnode for FDOs
    *RegFlags = WMIREG_FLAG_INSTANCE_PDO;

    return STATUS_SUCCESS;
}

Referenced by DiskFdoQueryWmiRegInfoEx(), and DriverEntry().

DiskFdoQueryWmiRegInfoEx()

NTSTATUS NTAPI DiskFdoQueryWmiRegInfoEx	(	IN PDEVICE_OBJECT	DeviceObject,
		OUT ULONG *	RegFlags,
		OUT PUNICODE_STRING	InstanceName,
		OUT PUNICODE_STRING	MofName
	)

Definition at line 2577 of file diskwmi.c.

{
    NTSTATUS status;

    UNREFERENCED_PARAMETER(MofName);

    status = DiskFdoQueryWmiRegInfo(DeviceObject,
                                    RegFlags,
                                    InstanceName);

    //
    // Leave MofName alone since disk doesn't have one
    //
    return(status);
}

Referenced by DriverEntry().

DiskFdoSetWmiDataBlock()

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

Definition at line 2869 of file diskwmi.c.

{
    NTSTATUS status;
    PFUNCTIONAL_DEVICE_EXTENSION fdoExtension = DeviceObject->DeviceExtension;
    PCOMMON_DEVICE_EXTENSION commonExtension = DeviceObject->DeviceExtension;
    PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);

    PAGED_CODE();

    TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskSetWmiDataBlock, Device %p, Irp %p, GuiIndex %d\n"
             "      BufferSize %#x Buffer %p\n",
             DeviceObject, Irp,
             GuidIndex, BufferSize, Buffer));

    if (GuidIndex == ScsiInfoExceptionsGuid)
    {
        PSTORAGE_SCSI_INFO_EXCEPTIONS infoExceptions;
        MODE_INFO_EXCEPTIONS modeInfo = {0};

        if (BufferSize >= sizeof(STORAGE_SCSI_INFO_EXCEPTIONS))
        {
            infoExceptions = (PSTORAGE_SCSI_INFO_EXCEPTIONS)Buffer;

            modeInfo.PageCode = MODE_PAGE_FAULT_REPORTING;
            modeInfo.PageLength = sizeof(MODE_INFO_EXCEPTIONS) - 2;

            modeInfo.PSBit = 0;
            modeInfo.Flags = infoExceptions->Flags;

            modeInfo.ReportMethod = infoExceptions->MRIE;

            REVERSE_BYTES(&modeInfo.IntervalTimer[0],
                          &infoExceptions->IntervalTimer);

            REVERSE_BYTES(&modeInfo.ReportCount[0],
                          &infoExceptions->ReportCount);

            if (modeInfo.Perf == 1)
            {
                diskData->AllowFPPerfHit = FALSE;
            } else {
                diskData->AllowFPPerfHit = TRUE;
            }

            status = DiskSetInfoExceptionInformation(fdoExtension,
                                                     &modeInfo);
        } else {
            status = STATUS_INVALID_PARAMETER;
        }

    } else if (GuidIndex <= SmartThresholdsGuid)
    {
        status = STATUS_WMI_READ_ONLY;
    } else {
        status = STATUS_WMI_GUID_NOT_FOUND;
    }

    TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskSetWmiDataBlock Device %p, Irp %p returns %lx\n",
             DeviceObject, Irp, status));

    status = ClassWmiCompleteRequest(DeviceObject,
                                     Irp,
                                     status,
                                     0,
                                     IO_NO_INCREMENT);

    return status;
}

Referenced by DriverEntry().

DiskFdoSetWmiDataItem()

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

Definition at line 2975 of file diskwmi.c.

{
    NTSTATUS status;

    PAGED_CODE();

    TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskSetWmiDataItem, Device %p, Irp %p, GuiIndex %d, DataId %d\n"
             "      BufferSize %#x Buffer %p\n",
             DeviceObject, Irp,
             GuidIndex, DataItemId, BufferSize, Buffer));

    if (GuidIndex <= SmartThresholdsGuid)
    {
        status = STATUS_WMI_READ_ONLY;
    } else {
        status = STATUS_WMI_GUID_NOT_FOUND;
    }

    TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "Disk: DiskSetWmiDataItem Device %p, Irp %p returns %lx\n",
             DeviceObject, Irp, status));

    status = ClassWmiCompleteRequest(DeviceObject,
                                     Irp,
                                     status,
                                     0,
                                     IO_NO_INCREMENT);

    return status;
}

Referenced by DriverEntry().

DiskGetIdentifyInfo()

NTSTATUS DiskGetIdentifyInfo	(	PFUNCTIONAL_DEVICE_EXTENSION	FdoExtension,
		PBOOLEAN	SupportSmart
	)

Definition at line 813 of file diskwmi.c.

{
    UCHAR outBuffer[sizeof(SRB_IO_CONTROL) + max( sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + IDENTIFY_BUFFER_SIZE )] = {0};
    ULONG outBufferSize = sizeof(outBuffer);
    NTSTATUS status;

    PAGED_CODE();

    status = DiskGetIdentifyData(FdoExtension,
                                 (PSRB_IO_CONTROL)outBuffer,
                                 &outBufferSize);

    if (NT_SUCCESS(status))
    {
        PUSHORT identifyData = (PUSHORT)&(outBuffer[sizeof(SRB_IO_CONTROL) + sizeof(SENDCMDOUTPARAMS) - 1]);
        USHORT commandSetSupported = identifyData[82];

        *SupportSmart = ((commandSetSupported != 0xffff) &&
                         (commandSetSupported != 0) &&
                         ((commandSetSupported & 1) == 1));
    } else {
        *SupportSmart = FALSE;
    }

    TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_IOCTL, "DiskGetIdentifyInfo: SMART %s supported for device %p, status %lx\n",
                   *SupportSmart ? "is" : "is not",
                   FdoExtension->DeviceObject,
                   status));

    return status;
}

Referenced by DiskDetectFailurePrediction().

DiskGetModePage()

NTSTATUS DiskGetModePage	(	_In_ PDEVICE_OBJECT	Fdo,
		_In_ UCHAR	PageMode,
		_In_ UCHAR	PageControl,
		_In_ PMODE_PARAMETER_HEADER	ModeData,
		_Inout_ PULONG	ModeDataSize,
		_Out_ PVOID *	PageData
	)

Definition at line 903 of file diskwmi.c.

{
    ULONG size = 0;
    PVOID pageData = NULL;

    PAGED_CODE();

    if (ModeData == NULL ||
        ModeDataSize == NULL ||
        *ModeDataSize < sizeof(MODE_PARAMETER_HEADER) ||
        PageData == NULL) {
        return STATUS_INVALID_PARAMETER;
    }

    RtlZeroMemory (ModeData, *ModeDataSize);

    size = ClassModeSenseEx(Fdo,
                            (PCHAR) ModeData,
                            *ModeDataSize,
                            PageMode,
                            PageControl);

    if (size < sizeof(MODE_PARAMETER_HEADER)) {

        //
        // Retry the request in case of a check condition.
        //
        size = ClassModeSenseEx(Fdo,
                            (PCHAR) ModeData,
                            *ModeDataSize,
                            PageMode,
                            PageControl);

        if (size < sizeof(MODE_PARAMETER_HEADER)) {
            TracePrint((TRACE_LEVEL_ERROR, TRACE_FLAG_WMI, "DiskGetModePage: Mode Sense for Page Mode %d with Page Control %d failed\n",
                PageMode, PageControl));
            *ModeDataSize = 0;
            return STATUS_IO_DEVICE_ERROR;
        }
    }

    //
    // If the length is greater than length indicated by the mode data reset
    // the data to the mode data.
    //
    if (size > (ULONG) (ModeData->ModeDataLength + 1)) {
        size = ModeData->ModeDataLength + 1;
    }

    *ModeDataSize = size;

    //
    // Find the mode page
    //
    pageData = ClassFindModePage((PCHAR) ModeData,
                                 size,
                                 PageMode,
                                 TRUE);

    if (pageData) {
        *PageData = pageData;
        return STATUS_SUCCESS;
    } else {
        *PageData = NULL;
        return STATUS_NOT_SUPPORTED;
    }
}

Referenced by DiskEnableInfoExceptions().

DiskInfoExceptionCheck()

NTSTATUS DiskInfoExceptionCheck

(

PFUNCTIONAL_DEVICE_EXTENSION

FdoExtension

)

Definition at line 1922 of file diskwmi.c.

{
    PUCHAR modeData;
    PSCSI_REQUEST_BLOCK srb;
    PCDB cdb;
    PIRP irp;
    PIO_STACK_LOCATION irpStack;
    PVOID senseInfoBuffer = NULL;
    UCHAR senseInfoBufferLength = 0;
    ULONG isRemoved;
    ULONG srbSize;
    PSTORAGE_REQUEST_BLOCK srbEx = NULL;
    PSTOR_ADDR_BTL8 storAddrBtl8 = NULL;
    PSRBEX_DATA_SCSI_CDB16 srbExDataCdb16 = NULL;

    modeData = ExAllocatePoolWithTag(NonPagedPoolNxCacheAligned,
                                     MODE_DATA_SIZE,
                                     DISK_TAG_INFO_EXCEPTION);
    if (modeData == NULL)
    {
        TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionCheck: Can't allocate mode data "
                        "buffer\n"));
        return(STATUS_INSUFFICIENT_RESOURCES);
    }

    if (FdoExtension->AdapterDescriptor->SrbType == SRB_TYPE_STORAGE_REQUEST_BLOCK) {
        srbSize = CLASS_SRBEX_SCSI_CDB16_BUFFER_SIZE;
    } else {
        srbSize = SCSI_REQUEST_BLOCK_SIZE;
    }
    srb = ExAllocatePoolWithTag(NonPagedPoolNx,
                                srbSize,
                                DISK_TAG_SRB);
    if (srb == NULL)
    {
        FREE_POOL(modeData);
        TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionCheck: Can't allocate srb "
                        "buffer\n"));
        return(STATUS_INSUFFICIENT_RESOURCES);
    }
    RtlZeroMemory(srb, srbSize);

    //
    // Sense buffer is in aligned nonpaged pool.
    //

    senseInfoBuffer = ExAllocatePoolWithTag(NonPagedPoolNxCacheAligned,
                                            SENSE_BUFFER_SIZE_EX,
                                            '7CcS');

    if (senseInfoBuffer == NULL)
    {
        FREE_POOL(srb);
        FREE_POOL(modeData);
        TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionCheck: Can't allocate request sense "
                        "buffer\n"));
        return(STATUS_INSUFFICIENT_RESOURCES);
    }

    senseInfoBufferLength = SENSE_BUFFER_SIZE_EX;

    //
    // Build device I/O control request with METHOD_NEITHER data transfer.
    // We'll queue a completion routine to cleanup the MDL's and such ourself.
    //

    irp = IoAllocateIrp(
            (CCHAR) (FdoExtension->CommonExtension.LowerDeviceObject->StackSize + 1),
            FALSE);

    if (irp == NULL)
    {
        FREE_POOL(senseInfoBuffer);
        FREE_POOL(srb);
        FREE_POOL(modeData);
        TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionCheck: Can't allocate Irp\n"));
        return(STATUS_INSUFFICIENT_RESOURCES);
    }

    isRemoved = ClassAcquireRemoveLock(FdoExtension->DeviceObject, irp);

    if (isRemoved)
    {
        ClassReleaseRemoveLock(FdoExtension->DeviceObject, irp);
        IoFreeIrp(irp);
        FREE_POOL(senseInfoBuffer);
        FREE_POOL(srb);
        FREE_POOL(modeData);
        TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionCheck: RemoveLock says isRemoved\n"));
        return(STATUS_DEVICE_DOES_NOT_EXIST);
    }

    //
    // Get next stack location.
    //

    IoSetNextIrpStackLocation(irp);
    irpStack = IoGetCurrentIrpStackLocation(irp);
    irpStack->DeviceObject = FdoExtension->DeviceObject;

    //
    // Save retry count in current Irp stack.
    //
    irpStack->Parameters.Others.Argument4 = (PVOID)MAXIMUM_RETRIES;

    //
    // Save allocated sense info buffer in case the port driver overwrites it
    //
    irpStack->Parameters.Others.Argument3 = senseInfoBuffer;

    irpStack = IoGetNextIrpStackLocation(irp);

    //
    // Set up SRB for execute scsi request. Save SRB address in next stack
    // for the port driver.
    //

    irpStack->MajorFunction = IRP_MJ_SCSI;
    irpStack->Parameters.Scsi.Srb = srb;

    IoSetCompletionRoutine(irp,
                           DiskInfoExceptionComplete,
                           srb,
                           TRUE,
                           TRUE,
                           TRUE);

    irp->MdlAddress = IoAllocateMdl( modeData,
                                     MODE_DATA_SIZE,
                                     FALSE,
                                     FALSE,
                                     irp );
    if (irp->MdlAddress == NULL)
    {
        ClassReleaseRemoveLock(FdoExtension->DeviceObject, irp);
        FREE_POOL(srb);
        FREE_POOL(modeData);
        FREE_POOL(senseInfoBuffer);
        IoFreeIrp( irp );
        TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskINfoExceptionCheck: Can't allocate MDL\n"));
        return STATUS_INSUFFICIENT_RESOURCES;
    }

    MmBuildMdlForNonPagedPool(irp->MdlAddress);

    //
    // Build the MODE SENSE CDB.
    //

    if (FdoExtension->AdapterDescriptor->SrbType == SRB_TYPE_STORAGE_REQUEST_BLOCK) {

        //
        // Set up STORAGE_REQUEST_BLOCK fields
        //

        srbEx = (PSTORAGE_REQUEST_BLOCK)srb;
        srbEx->Length = FIELD_OFFSET(STORAGE_REQUEST_BLOCK, Signature);
        srbEx->Function = SRB_FUNCTION_STORAGE_REQUEST_BLOCK;
        srbEx->Signature = SRB_SIGNATURE;
        srbEx->Version = STORAGE_REQUEST_BLOCK_VERSION_1;
        srbEx->SrbLength = srbSize;
        srbEx->SrbFunction = SRB_FUNCTION_EXECUTE_SCSI;
        srbEx->RequestPriority = IoGetIoPriorityHint(irp);
        srbEx->AddressOffset = sizeof(STORAGE_REQUEST_BLOCK);
        srbEx->NumSrbExData = 1;

        // Set timeout value from device extension.
        srbEx->TimeOutValue = FdoExtension->TimeOutValue;

        // Set the transfer length.
        srbEx->DataTransferLength = MODE_DATA_SIZE;
        srbEx->DataBuffer = modeData;

        srbEx->SrbFlags = FdoExtension->SrbFlags;

        SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_DATA_IN);

        //
        // Disable synchronous transfer for these requests.
        //
        SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_DISABLE_SYNCH_TRANSFER);

        //
        // Don't freeze the queue on an error
        //
        SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_NO_QUEUE_FREEZE);

        srbEx->RequestAttribute = SRB_SIMPLE_TAG_REQUEST;
        srbEx->RequestTag = SP_UNTAGGED;

        // Set up IRP Address.
        srbEx->OriginalRequest = irp;

        //
        // Set up address fields
        //

        storAddrBtl8 = (PSTOR_ADDR_BTL8) ((PUCHAR)srbEx + srbEx->AddressOffset);
        storAddrBtl8->Type = STOR_ADDRESS_TYPE_BTL8;
        storAddrBtl8->AddressLength = STOR_ADDR_BTL8_ADDRESS_LENGTH;

        //
        // Set up SCSI SRB extended data fields
        //

        srbEx->SrbExDataOffset[0] = sizeof(STORAGE_REQUEST_BLOCK) +
            sizeof(STOR_ADDR_BTL8);
        if ((srbEx->SrbExDataOffset[0] + sizeof(SRBEX_DATA_SCSI_CDB16)) <= srbEx->SrbLength) {
            srbExDataCdb16 = (PSRBEX_DATA_SCSI_CDB16)((PUCHAR)srbEx + srbEx->SrbExDataOffset[0]);
            srbExDataCdb16->Type = SrbExDataTypeScsiCdb16;
            srbExDataCdb16->Length = SRBEX_DATA_SCSI_CDB16_LENGTH;
            srbExDataCdb16->CdbLength = 6;

            // Enable auto request sense.
            srbExDataCdb16->SenseInfoBufferLength = senseInfoBufferLength;
            srbExDataCdb16->SenseInfoBuffer = senseInfoBuffer;

            cdb = (PCDB)srbExDataCdb16->Cdb;
        } else {
            // Should not happen
            NT_ASSERT(FALSE);

            ClassReleaseRemoveLock(FdoExtension->DeviceObject, irp);
            FREE_POOL(srb);
            FREE_POOL(modeData);
            FREE_POOL(senseInfoBuffer);
            IoFreeIrp( irp );
            TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskINfoExceptionCheck: Insufficient extended SRB size\n"));
            return STATUS_INTERNAL_ERROR;
        }

    } else {

        //
        // Write length to SRB.
        //
        srb->Length = SCSI_REQUEST_BLOCK_SIZE;

        //
        // Set SCSI bus address.
        //

        srb->Function = SRB_FUNCTION_EXECUTE_SCSI;

        //
        // Enable auto request sense.
        //

        srb->SenseInfoBufferLength = senseInfoBufferLength;
        srb->SenseInfoBuffer = senseInfoBuffer;

        //
        // Set timeout value from device extension.
        //
        srb->TimeOutValue = FdoExtension->TimeOutValue;

        //
        // Set the transfer length.
        //
        srb->DataTransferLength = MODE_DATA_SIZE;
        srb->DataBuffer = modeData;

        srb->SrbFlags = FdoExtension->SrbFlags;

        SET_FLAG(srb->SrbFlags, SRB_FLAGS_DATA_IN);

        //
        // Disable synchronous transfer for these requests.
        //
        SET_FLAG(srb->SrbFlags, SRB_FLAGS_DISABLE_SYNCH_TRANSFER);

        //
        // Don't freeze the queue on an error
        //
        SET_FLAG(srb->SrbFlags, SRB_FLAGS_NO_QUEUE_FREEZE);

        srb->QueueAction = SRB_SIMPLE_TAG_REQUEST;
        srb->QueueTag = SP_UNTAGGED;

        //
        // Set up IRP Address.
        //
        srb->OriginalRequest = irp;

        srb->CdbLength = 6;
        cdb = (PCDB)srb->Cdb;

    }

    cdb->MODE_SENSE.OperationCode = SCSIOP_MODE_SENSE;
    cdb->MODE_SENSE.PageCode = MODE_PAGE_FAULT_REPORTING;
    cdb->MODE_SENSE.AllocationLength = MODE_DATA_SIZE;

    //
    // Call the port driver with the request and wait for it to complete.
    //

    IoMarkIrpPending(irp);
    IoCallDriver(FdoExtension->CommonExtension.LowerDeviceObject,
                          irp);

    return(STATUS_PENDING);
}

Referenced by DiskDetectFailurePrediction().

DiskInfoExceptionComplete()

NTSTATUS NTAPI DiskInfoExceptionComplete	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp,
		PVOID	Context
	)

Definition at line 1648 of file diskwmi.c.

{
    PCOMMON_DEVICE_EXTENSION commonExtension = DeviceObject->DeviceExtension;
    PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
    PIO_STACK_LOCATION irpStack = IoGetCurrentIrpStackLocation(Irp);
    PIO_STACK_LOCATION nextIrpStack = IoGetNextIrpStackLocation(Irp);
    PSCSI_REQUEST_BLOCK srb = Context;
    NTSTATUS status;
    BOOLEAN retry;
    ULONG retryInterval;
    ULONG srbStatus;
    BOOLEAN freeLockAndIrp = TRUE;
    PVOID originalSenseInfoBuffer = irpStack->Parameters.Others.Argument3;
    PSTORAGE_REQUEST_BLOCK srbEx = NULL;
    PVOID dataBuffer = NULL;
    ULONG dataLength = 0;
    PVOID senseBuffer = NULL;
    UCHAR cdbLength8 = 0;
    ULONG cdbLength32 = 0;
    UCHAR senseBufferLength = 0;

    srbStatus = SRB_STATUS(srb->SrbStatus);

    if (srb->Function == SRB_FUNCTION_STORAGE_REQUEST_BLOCK) {
        srbEx = (PSTORAGE_REQUEST_BLOCK)srb;
        dataBuffer = srbEx->DataBuffer;
        dataLength = srbEx->DataTransferLength;
        if ((srbEx->SrbFunction == SRB_FUNCTION_EXECUTE_SCSI) &&
            (srbEx->NumSrbExData > 0)) {
            (void)GetSrbScsiData(srbEx, &cdbLength8, &cdbLength32, NULL, &senseBuffer, &senseBufferLength);
        }
    } else {
        dataBuffer = srb->DataBuffer;
        dataLength = srb->DataTransferLength;
        senseBuffer = srb->SenseInfoBuffer;
    }

    //
    // Check SRB status for success of completing request.
    // SRB_STATUS_DATA_OVERRUN also indicates success.
    //
    if ((srbStatus != SRB_STATUS_SUCCESS) &&
        (srbStatus != SRB_STATUS_DATA_OVERRUN))
    {
        TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_GENERAL, "DiskInfoExceptionComplete: IRP %p, SRB %p\n", Irp, srb));

        if (TEST_FLAG(srb->SrbStatus, SRB_STATUS_QUEUE_FROZEN))
        {
            ClassReleaseQueue(DeviceObject);
        }

        retry = ClassInterpretSenseInfo(
                    DeviceObject,
                    srb,
                    irpStack->MajorFunction,
                     0,
                    MAXIMUM_RETRIES -
                        ((ULONG)(ULONG_PTR)irpStack->Parameters.Others.Argument4),
                    &status,
                    &retryInterval);

        //
        // If the status is verified required and the this request
        // should bypass verify required then retry the request.
        //

        if (TEST_FLAG(irpStack->Flags, SL_OVERRIDE_VERIFY_VOLUME) &&
            status == STATUS_VERIFY_REQUIRED)
        {
            status = STATUS_IO_DEVICE_ERROR;
            retry = TRUE;
        }

        retry = retry && irpStack->Parameters.Others.Argument4;

        irpStack->Parameters.Others.Argument4 = (PVOID)((ULONG_PTR)irpStack->Parameters.Others.Argument4 - 1);

        if (retry)
        {
            //
            // Retry request.
            //

            TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_GENERAL, "DiskInfoExceptionComplete: Retry request %p\n", Irp));

            NT_ASSERT(dataBuffer == MmGetMdlVirtualAddress(Irp->MdlAddress));

            if (srb->Function == SRB_FUNCTION_STORAGE_REQUEST_BLOCK) {

                //
                // Reset byte count of transfer in SRB Extension.
                //
                srbEx->DataTransferLength = Irp->MdlAddress->ByteCount;

                //
                // Zero SRB statuses.
                //

                srbEx->SrbStatus = 0;
                if ((srbEx->SrbFunction == SRB_FUNCTION_EXECUTE_SCSI) &&
                    (srbEx->NumSrbExData > 0)) {
                    SetSrbScsiData(srbEx, cdbLength8, cdbLength32, 0, senseBuffer, senseBufferLength);
                }

                //
                // Set the no disconnect flag, disable synchronous data transfers and
                // disable tagged queuing. This fixes some errors.
                //

                SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_DISABLE_DISCONNECT);
                SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_DISABLE_SYNCH_TRANSFER);
                CLEAR_FLAG(srbEx->SrbFlags, SRB_FLAGS_QUEUE_ACTION_ENABLE);

                srbEx->RequestAttribute = SRB_SIMPLE_TAG_REQUEST;
                srbEx->RequestTag = SP_UNTAGGED;

            } else {

                //
                // Reset byte count of transfer in SRB Extension.
                //
                srb->DataTransferLength = Irp->MdlAddress->ByteCount;

                //
                // Zero SRB statuses.
                //

                srb->SrbStatus = srb->ScsiStatus = 0;

                //
                // Set the no disconnect flag, disable synchronous data transfers and
                // disable tagged queuing. This fixes some errors.
                //

                SET_FLAG(srb->SrbFlags, SRB_FLAGS_DISABLE_DISCONNECT);
                SET_FLAG(srb->SrbFlags, SRB_FLAGS_DISABLE_SYNCH_TRANSFER);
                CLEAR_FLAG(srb->SrbFlags, SRB_FLAGS_QUEUE_ACTION_ENABLE);

                srb->QueueAction = SRB_SIMPLE_TAG_REQUEST;
                srb->QueueTag = SP_UNTAGGED;
            }

            //
            // Set up major SCSI function.
            //

            nextIrpStack->MajorFunction = IRP_MJ_SCSI;

            //
            // Save SRB address in next stack for port driver.
            //

            nextIrpStack->Parameters.Scsi.Srb = srb;


            IoSetCompletionRoutine(Irp,
                                   DiskInfoExceptionComplete,
                                   srb,
                                   TRUE, TRUE, TRUE);

            (VOID)IoCallDriver(commonExtension->LowerDeviceObject, Irp);

            return STATUS_MORE_PROCESSING_REQUIRED;
        }

    } else {

        //
        // Get the results from the mode sense
        //
        PMODE_INFO_EXCEPTIONS pageData;
        PMODE_PARAMETER_HEADER modeData;
        ULONG modeDataLength;

        modeData = dataBuffer;
        modeDataLength = dataLength;

        pageData = ClassFindModePage((PCHAR)modeData,
                                     modeDataLength,
                                     MODE_PAGE_FAULT_REPORTING,
                                     TRUE);
        if (pageData != NULL)
        {
            TracePrint((TRACE_LEVEL_INFORMATION, TRACE_FLAG_WMI, "DiskInfoExceptionComplete: %p supports SMART\n",
                        DeviceObject));

            diskData->ScsiInfoExceptionsSupported = TRUE;

            //
            // The DEXCPT bit must be 0 and the MRIE field must be valid.
            //
            if (pageData->Dexcpt == 0 &&
                pageData->ReportMethod >= 2 &&
                pageData->ReportMethod <= 6)
            {
                diskData->FailurePredictionCapability = FailurePredictionSense;
                diskData->FailurePredictionEnabled = TRUE;
                status = DiskPostReregisterRequest(DeviceObject, Irp);

                if (NT_SUCCESS(status))
                {
                    //
                    // Make sure we won't free the remove lock and the irp
                    // since we need to keep these until after the work
                    // item has completed running
                    //
                    freeLockAndIrp = FALSE;
                }
            } else {
                TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionComplete: %p is not enabled for SMART\n",
                        DeviceObject));

            }

        } else {
            TracePrint((TRACE_LEVEL_WARNING, TRACE_FLAG_WMI, "DiskInfoExceptionComplete: %p does not supports SMART\n",
                        DeviceObject));

        }

        //
        // Set status for successful request
        //

        status = STATUS_SUCCESS;

    } // end if (SRB_STATUS(srb->SrbStatus) == SRB_STATUS_SUCCESS)

    //
    // Free the srb
    //
    if (senseBuffer != originalSenseInfoBuffer)
    {
        //
        // Free the original sense info buffer in case the port driver has overwritten it
        //
        FREE_POOL(originalSenseInfoBuffer);
    }

    FREE_POOL(senseBuffer);
    FREE_POOL(dataBuffer);
    FREE_POOL(srb);

    if (freeLockAndIrp)
    {
        //
        // Set status in completing IRP.
        //

        Irp->IoStatus.Status = status;

        //
        // If pending has be returned for this irp then mark the current stack as
        // pending.
        //

        if (Irp->PendingReturned) {
            IoMarkIrpPending(Irp);
        }

        ClassReleaseRemoveLock(DeviceObject, Irp);
        IoFreeMdl(Irp->MdlAddress);
        IoFreeIrp(Irp);
    }

    return(STATUS_MORE_PROCESSING_REQUIRED);
}

DiskInitializeReregistration()

NTSTATUS DiskInitializeReregistration

(

VOID

)

Definition at line 1560 of file diskwmi.c.

{
    PAGED_CODE();

    //
    // Initialize the spinlock used to manage the
    // list of disks reregistering their guids
    //
    KeInitializeSpinLock(&DiskReregSpinlock);

    return(STATUS_SUCCESS);
}

Referenced by DriverEntry().

DiskPerformSmartCommand()

NTSTATUS DiskPerformSmartCommand	(	IN PFUNCTIONAL_DEVICE_EXTENSION	FdoExtension,
		IN ULONG	SrbControlCode,
		IN UCHAR	Command,
		IN UCHAR	Feature,
		IN UCHAR	SectorCount,
		IN UCHAR	SectorNumber,
		IN OUT PSRB_IO_CONTROL	SrbControl,
		OUT PULONG	BufferSize
	)

Definition at line 476 of file diskwmi.c.

{
    PCOMMON_DEVICE_EXTENSION commonExtension = (PCOMMON_DEVICE_EXTENSION)FdoExtension;
    PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
    PUCHAR buffer;
    PSENDCMDINPARAMS cmdInParameters;
    NTSTATUS status;
    ULONG availableBufferSize;
    KEVENT event;
    PIRP irp;
    IO_STATUS_BLOCK ioStatus = { 0 };
    SCSI_REQUEST_BLOCK srb = {0};
    LARGE_INTEGER startingOffset;
    ULONG length;
    PIO_STACK_LOCATION irpStack;
    UCHAR srbExBuffer[CLASS_SRBEX_NO_SRBEX_DATA_BUFFER_SIZE] = {0};
    PSTORAGE_REQUEST_BLOCK srbEx = (PSTORAGE_REQUEST_BLOCK)srbExBuffer;
    PSTOR_ADDR_BTL8 storAddrBtl8;

    PAGED_CODE();

    //
    // Point to the 'buffer' portion of the SRB_CONTROL and compute how
    // much room we have left in the srb control. Abort if the buffer
    // isn't at least the size of SRB_IO_CONTROL.
    //

    buffer = (PUCHAR)SrbControl + sizeof(SRB_IO_CONTROL);

    cmdInParameters = (PSENDCMDINPARAMS)buffer;

    if (*BufferSize >= sizeof(SRB_IO_CONTROL)) {
        availableBufferSize = *BufferSize - sizeof(SRB_IO_CONTROL);
    } else {
        return STATUS_BUFFER_TOO_SMALL;
    }

#if DBG

    //
    // Ensure control codes and buffer lengths passed are correct
    //
    {
        ULONG controlCode = 0;
        ULONG lengthNeeded = sizeof(SENDCMDINPARAMS);

        if (Command == SMART_CMD)
        {
            switch (Feature)
            {
                case ENABLE_SMART:
                {
                    controlCode = IOCTL_SCSI_MINIPORT_ENABLE_SMART;
                    break;
                }

                case DISABLE_SMART:
                {
                    controlCode = IOCTL_SCSI_MINIPORT_DISABLE_SMART;
                    break;
                }

                case RETURN_SMART_STATUS:
                {
                    controlCode = IOCTL_SCSI_MINIPORT_RETURN_STATUS;
                    lengthNeeded = max( lengthNeeded, sizeof(SENDCMDOUTPARAMS) - 1 + sizeof(IDEREGS) );
                    break;
                }

                case ENABLE_DISABLE_AUTOSAVE:
                {
                    controlCode = IOCTL_SCSI_MINIPORT_ENABLE_DISABLE_AUTOSAVE;
                    break;
                }

                case SAVE_ATTRIBUTE_VALUES:
                {
                    controlCode = IOCTL_SCSI_MINIPORT_SAVE_ATTRIBUTE_VALUES;
                    break;
                }


                case EXECUTE_OFFLINE_DIAGS:
                {
                    controlCode = IOCTL_SCSI_MINIPORT_EXECUTE_OFFLINE_DIAGS;
                    break;
                }

                case READ_ATTRIBUTES:
                {
                    controlCode  = IOCTL_SCSI_MINIPORT_READ_SMART_ATTRIBS;
                    lengthNeeded = max( lengthNeeded, sizeof(SENDCMDOUTPARAMS) - 1 + READ_ATTRIBUTE_BUFFER_SIZE );
                    break;
                }

                case READ_THRESHOLDS:
                {
                    controlCode  = IOCTL_SCSI_MINIPORT_READ_SMART_THRESHOLDS;
                    lengthNeeded = max( lengthNeeded, sizeof(SENDCMDOUTPARAMS) - 1 + READ_THRESHOLD_BUFFER_SIZE );
                    break;
                }

                case SMART_READ_LOG:
                {
                    controlCode  = IOCTL_SCSI_MINIPORT_READ_SMART_LOG;
                    lengthNeeded = max( lengthNeeded, sizeof(SENDCMDOUTPARAMS) - 1 + (SectorCount * SMART_LOG_SECTOR_SIZE) );
                    break;
                }

                case SMART_WRITE_LOG:
                {
                    controlCode  = IOCTL_SCSI_MINIPORT_WRITE_SMART_LOG;
                    lengthNeeded = lengthNeeded - 1 + (SectorCount * SMART_LOG_SECTOR_SIZE);
                    break;
                }

            }

        } else if (Command == ID_CMD) {

            controlCode  = IOCTL_SCSI_MINIPORT_IDENTIFY;
            lengthNeeded = max( lengthNeeded, sizeof(SENDCMDOUTPARAMS) - 1 + IDENTIFY_BUFFER_SIZE );

        } else {

            NT_ASSERT(FALSE);
        }

        NT_ASSERT(controlCode == SrbControlCode);
        NT_ASSERT(availableBufferSize >= lengthNeeded);
    }

#endif

    //
    // Build SrbControl and input to SMART command
    //
    SrbControl->HeaderLength = sizeof(SRB_IO_CONTROL);
    RtlMoveMemory (SrbControl->Signature, "SCSIDISK", 8);
    SrbControl->Timeout      = FdoExtension->TimeOutValue;
    SrbControl->Length       = availableBufferSize;
    SrbControl->ControlCode  = SrbControlCode;

    cmdInParameters->cBufferSize  = sizeof(SENDCMDINPARAMS);
    cmdInParameters->bDriveNumber = diskData->ScsiAddress.TargetId;
    cmdInParameters->irDriveRegs.bFeaturesReg     = Feature;
    cmdInParameters->irDriveRegs.bSectorCountReg  = SectorCount;
    cmdInParameters->irDriveRegs.bSectorNumberReg = SectorNumber;
    cmdInParameters->irDriveRegs.bCylLowReg       = SMART_CYL_LOW;
    cmdInParameters->irDriveRegs.bCylHighReg      = SMART_CYL_HI;
    cmdInParameters->irDriveRegs.bCommandReg      = Command;

    //
    // Create and send irp
    //
    KeInitializeEvent(&event, NotificationEvent, FALSE);

    startingOffset.QuadPart = (LONGLONG) 1;

    length = SrbControl->HeaderLength + SrbControl->Length;

    irp = IoBuildSynchronousFsdRequest(
                IRP_MJ_SCSI,
                commonExtension->LowerDeviceObject,
                SrbControl,
                length,
                &startingOffset,
                &event,
                &ioStatus);

    if (irp == NULL) {
        return STATUS_INSUFFICIENT_RESOURCES;
    }

    irpStack = IoGetNextIrpStackLocation(irp);

    //
    // Set major and minor codes.
    //

    irpStack->MajorFunction = IRP_MJ_SCSI;
    irpStack->MinorFunction = 1;

    //
    // Fill in SRB fields.
    //

    if (FdoExtension->AdapterDescriptor->SrbType == SRB_TYPE_STORAGE_REQUEST_BLOCK) {
        irpStack->Parameters.Others.Argument1 = srbEx;

        //
        // Set up STORAGE_REQUEST_BLOCK fields
        //

        srbEx->Length = FIELD_OFFSET(STORAGE_REQUEST_BLOCK, Signature);
        srbEx->Function = SRB_FUNCTION_STORAGE_REQUEST_BLOCK;
        srbEx->Signature = SRB_SIGNATURE;
        srbEx->Version = STORAGE_REQUEST_BLOCK_VERSION_1;
        srbEx->SrbLength = sizeof(srbExBuffer);
        srbEx->SrbFunction = SRB_FUNCTION_IO_CONTROL;
        srbEx->RequestPriority = IoGetIoPriorityHint(irp);
        srbEx->AddressOffset = sizeof(STORAGE_REQUEST_BLOCK);

        srbEx->SrbFlags = FdoExtension->SrbFlags;
        SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_DATA_IN);
        SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_NO_QUEUE_FREEZE);
        SET_FLAG(srbEx->SrbFlags, SRB_FLAGS_NO_KEEP_AWAKE);

        srbEx->RequestAttribute = SRB_SIMPLE_TAG_REQUEST;
        srbEx->RequestTag = SP_UNTAGGED;

        srbEx->OriginalRequest = irp;

        //
        // Set timeout to requested value.
        //

        srbEx->TimeOutValue = SrbControl->Timeout;

        //
        // Set the data buffer.
        //

        srbEx->DataBuffer = SrbControl;
        srbEx->DataTransferLength = length;

        //
        // Set up address fields
        //

        storAddrBtl8 = (PSTOR_ADDR_BTL8) ((PUCHAR)srbEx + srbEx->AddressOffset);
        storAddrBtl8->Type = STOR_ADDRESS_TYPE_BTL8;
        storAddrBtl8->AddressLength = STOR_ADDR_BTL8_ADDRESS_LENGTH;
        storAddrBtl8->Path = diskData->ScsiAddress.PathId;
        storAddrBtl8->Target = diskData->ScsiAddress.TargetId;
        storAddrBtl8->Lun = srb.Lun = diskData->ScsiAddress.Lun;

    } else {
        irpStack->Parameters.Others.Argument1 = &srb;

        srb.PathId = diskData->ScsiAddress.PathId;
        srb.TargetId = diskData->ScsiAddress.TargetId;
        srb.Lun = diskData->ScsiAddress.Lun;

        srb.Function = SRB_FUNCTION_IO_CONTROL;
        srb.Length = sizeof(SCSI_REQUEST_BLOCK);

        srb.SrbFlags = FdoExtension->SrbFlags;
        SET_FLAG(srb.SrbFlags, SRB_FLAGS_DATA_IN);
        SET_FLAG(srb.SrbFlags, SRB_FLAGS_NO_QUEUE_FREEZE);
        SET_FLAG(srb.SrbFlags, SRB_FLAGS_NO_KEEP_AWAKE);

        srb.QueueAction = SRB_SIMPLE_TAG_REQUEST;
        srb.QueueTag = SP_UNTAGGED;

        srb.OriginalRequest = irp;

        //
        // Set timeout to requested value.
        //

        srb.TimeOutValue = SrbControl->Timeout;

        //
        // Set the data buffer.
        //

        srb.DataBuffer = SrbControl;
        srb.DataTransferLength = length;
    }

    //
    // Flush the data buffer for output. This will insure that the data is
    // written back to memory.  Since the data-in flag is the the port driver
    // will flush the data again for input which will ensure the data is not
    // in the cache.
    //

    KeFlushIoBuffers(irp->MdlAddress, FALSE, TRUE);

    //
    // Call port driver to handle this request.
    //

    status = IoCallDriver(commonExtension->LowerDeviceObject, irp);

    if (status == STATUS_PENDING) {
        KeWaitForSingleObject(&event, Executive, KernelMode, FALSE, NULL);
        status = ioStatus.Status;
    }

    return status;
}

Referenced by DiskDisableSmart(), DiskDisableSmartAttributeAutosave(), DiskEnableSmart(), DiskEnableSmartAttributeAutosave(), DiskExecuteSmartDiagnostics(), DiskReadSmartLog(), and DiskWriteSmartLog().

DiskPostReregisterRequest()

NTSTATUS DiskPostReregisterRequest	(	PDEVICE_OBJECT	DeviceObject,
		PIRP	Irp
	)

Definition at line 1577 of file diskwmi.c.

{
    PDISKREREGREQUEST reregRequest;
    PIO_WORKITEM workItem;
    NTSTATUS status;

    workItem = IoAllocateWorkItem(DeviceObject);

    if (!workItem) {
        return STATUS_INSUFFICIENT_RESOURCES;
    }

    reregRequest = ExAllocatePoolWithTag(NonPagedPoolNx,
                                         sizeof(DISKREREGREQUEST),
                                         DISK_TAG_SMART);
    if (reregRequest != NULL)
    {
        //
        // add the disk that needs reregistration to the stack of disks
        // to reregister. If the list is transitioning from empty to
        // non empty then also kick off the work item so that the
        // reregistration worker can do the reregister.
        //
        reregRequest->DeviceObject = DeviceObject;
        reregRequest->Irp = Irp;
        ExInterlockedPushEntryList(
                                   &DiskReregHead,
                                   &reregRequest->Next,
                                   &DiskReregSpinlock);

        if (InterlockedIncrement(&DiskReregWorkItems) == 1)
        {
            //
            // There is no worker routine running, queue this one.
            // When the work item runs, it will process the reregistration
            // list.
            //

            IoQueueWorkItem(workItem,
                            DiskReregWorker,
                            DelayedWorkQueue,
                            workItem);
        } else {

            //
            // There is a worker routine already running, so we
            // can free this unused work item.
            //

            IoFreeWorkItem(workItem);
        }

        status = STATUS_SUCCESS;

    } else {

        IoFreeWorkItem(workItem);
        TracePrint((TRACE_LEVEL_ERROR, TRACE_FLAG_GENERAL, "DiskPostReregisterRequest: could not allocate reregRequest for %p\n",
                    DeviceObject));
        status = STATUS_INSUFFICIENT_RESOURCES;
    }

    return(status);
}

Referenced by DiskInfoExceptionComplete().

DiskReadFailurePredictData()

NTSTATUS DiskReadFailurePredictData	(	PFUNCTIONAL_DEVICE_EXTENSION	FdoExtension,
		PSTORAGE_FAILURE_PREDICT_DATA	DiskSmartData
	)

Definition at line 1327 of file diskwmi.c.

{
    PCOMMON_DEVICE_EXTENSION commonExtension = (PCOMMON_DEVICE_EXTENSION)FdoExtension;
    PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
    NTSTATUS status;

    PAGED_CODE();

    switch(diskData->FailurePredictionCapability)
    {
        case FailurePredictionSmart:
        {
            PUCHAR outBuffer;
            ULONG outBufferSize;
            PSENDCMDOUTPARAMS cmdOutParameters;

            outBufferSize = sizeof(SRB_IO_CONTROL) + max( sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + READ_ATTRIBUTE_BUFFER_SIZE );

            outBuffer = ExAllocatePoolWithTag(NonPagedPoolNx,
                                              outBufferSize,
                                              DISK_TAG_SMART);

            if (outBuffer != NULL)
            {
                status = DiskReadSmartData(FdoExtension,
                                           (PSRB_IO_CONTROL)outBuffer,
                                           &outBufferSize);

                if (NT_SUCCESS(status))
                {
                    cmdOutParameters = (PSENDCMDOUTPARAMS)(outBuffer +
                                                    sizeof(SRB_IO_CONTROL));

                    DiskSmartData->Length = READ_ATTRIBUTE_BUFFER_SIZE;
                    RtlCopyMemory(DiskSmartData->VendorSpecific,
                                  cmdOutParameters->bBuffer,
                                  min(READ_ATTRIBUTE_BUFFER_SIZE, sizeof(DiskSmartData->VendorSpecific)));
                }
                FREE_POOL(outBuffer);
            } else {
                status = STATUS_INSUFFICIENT_RESOURCES;
            }

            break;
        }

        case FailurePredictionSense:
        {
            DiskSmartData->Length = sizeof(ULONG);
            *((PULONG)DiskSmartData->VendorSpecific) = FdoExtension->FailureReason;

            status = STATUS_SUCCESS;
            break;
        }

        case FailurePredictionIoctl:
        case FailurePredictionNone:
        default:
        {
            status = STATUS_INVALID_DEVICE_REQUEST;
            break;
        }
    }

    return status;
}

Referenced by DiskIoctlPredictFailure().

DiskReadFailurePredictStatus()

NTSTATUS DiskReadFailurePredictStatus	(	PFUNCTIONAL_DEVICE_EXTENSION	FdoExtension,
		PSTORAGE_FAILURE_PREDICT_STATUS	DiskSmartStatus
	)

Definition at line 1251 of file diskwmi.c.

{
    PCOMMON_DEVICE_EXTENSION commonExtension = (PCOMMON_DEVICE_EXTENSION)FdoExtension;
    PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
    NTSTATUS status;

    PAGED_CODE();

    DiskSmartStatus->PredictFailure = FALSE;

    switch(diskData->FailurePredictionCapability)
    {
        case FailurePredictionSmart:
        {
            UCHAR outBuffer[sizeof(SRB_IO_CONTROL) + max( sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + sizeof(IDEREGS) )] = {0};
            ULONG outBufferSize = sizeof(outBuffer);
            PSENDCMDOUTPARAMS cmdOutParameters;

            status = DiskReadSmartStatus(FdoExtension,
                                     (PSRB_IO_CONTROL)outBuffer,
                                     &outBufferSize);

            if (NT_SUCCESS(status))
            {
                cmdOutParameters = (PSENDCMDOUTPARAMS)(outBuffer +
                                               sizeof(SRB_IO_CONTROL));

                DiskSmartStatus->Reason = 0; // Unknown;
                DiskSmartStatus->PredictFailure = ((cmdOutParameters->bBuffer[3] == 0xf4) &&
                                                   (cmdOutParameters->bBuffer[4] == 0x2c));
            }
            break;
        }

        case FailurePredictionSense:
        {
            DiskSmartStatus->Reason = FdoExtension->FailureReason;
            DiskSmartStatus->PredictFailure = FdoExtension->FailurePredicted;
            status = STATUS_SUCCESS;
            break;
        }

        case FailurePredictionIoctl:
        case FailurePredictionNone:
        default:
        {
            status = STATUS_INVALID_DEVICE_REQUEST;
            break;
        }
    }

    return status;
}

Referenced by DiskDetectFailurePrediction(), and DiskIoctlPredictFailure().

DiskReadFailurePredictThresholds()

NTSTATUS DiskReadFailurePredictThresholds	(	PFUNCTIONAL_DEVICE_EXTENSION	FdoExtension,
		PSTORAGE_FAILURE_PREDICT_THRESHOLDS	DiskSmartThresholds
	)

Definition at line 1417 of file diskwmi.c.

{
    PCOMMON_DEVICE_EXTENSION commonExtension = (PCOMMON_DEVICE_EXTENSION)FdoExtension;
    PDISK_DATA diskData = (PDISK_DATA)(commonExtension->DriverData);
    NTSTATUS status;

    PAGED_CODE();

    switch(diskData->FailurePredictionCapability)
    {
        case FailurePredictionSmart:
        {
            PUCHAR outBuffer;
            PSENDCMDOUTPARAMS cmdOutParameters;
            ULONG outBufferSize;

            outBufferSize = sizeof(SRB_IO_CONTROL) + max( sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + READ_THRESHOLD_BUFFER_SIZE );

            outBuffer = ExAllocatePoolWithTag(NonPagedPoolNx,
                                              outBufferSize,
                                              DISK_TAG_SMART);

            if (outBuffer != NULL)
            {
                status = DiskReadSmartThresholds(FdoExtension,
                                                (PSRB_IO_CONTROL)outBuffer,
                                                &outBufferSize);

                if (NT_SUCCESS(status))
                {
                    cmdOutParameters = (PSENDCMDOUTPARAMS)(outBuffer +
                                           sizeof(SRB_IO_CONTROL));

                    RtlCopyMemory(DiskSmartThresholds->VendorSpecific,
                                  cmdOutParameters->bBuffer,
                                  min(READ_THRESHOLD_BUFFER_SIZE, sizeof(DiskSmartThresholds->VendorSpecific)));
                }
                FREE_POOL(outBuffer);
            } else {
                status = STATUS_INSUFFICIENT_RESOURCES;
            }

            break;
        }

        case FailurePredictionSense:
        case FailurePredictionIoctl:
        case FailurePredictionNone:
        default:
        {
            status = STATUS_INVALID_DEVICE_REQUEST;
            break;
        }
    }

    return status;
}

Referenced by DiskFdoQueryWmiDataBlock().

DiskReadSmartLog()

NTSTATUS DiskReadSmartLog	(	IN PFUNCTIONAL_DEVICE_EXTENSION	FdoExtension,
		IN UCHAR	SectorCount,
		IN UCHAR	LogAddress,
		OUT PUCHAR	Buffer
	)

Definition at line 379 of file diskwmi.c.

{
    PSRB_IO_CONTROL srbControl;
    NTSTATUS status;
    PSENDCMDOUTPARAMS sendCmdOutParams;
    ULONG logSize, bufferSize;

    PAGED_CODE();

    logSize = SectorCount * SMART_LOG_SECTOR_SIZE;
    bufferSize = sizeof(SRB_IO_CONTROL) +  max( sizeof(SENDCMDINPARAMS), sizeof(SENDCMDOUTPARAMS) - 1 + logSize );

    srbControl = ExAllocatePoolWithTag(NonPagedPoolNx,
                                       bufferSize,
                                       DISK_TAG_SMART);

    if (srbControl != NULL)
    {
        status = DiskPerformSmartCommand(FdoExtension,
                                         IOCTL_SCSI_MINIPORT_READ_SMART_LOG,
                                         SMART_CMD,
                                         SMART_READ_LOG,
                                         SectorCount,
                                         LogAddress,
                                         srbControl,
                                         &bufferSize);

        if (NT_SUCCESS(status))
        {
            sendCmdOutParams = (PSENDCMDOUTPARAMS)((PUCHAR)srbControl +
                                                   sizeof(SRB_IO_CONTROL));
            RtlCopyMemory(Buffer,
                          &sendCmdOutParams->bBuffer[0],
                          logSize);
        }

        FREE_POOL(srbControl);
    } else {
        status = STATUS_INSUFFICIENT_RESOURCES;
    }
    return(status);
}

Referenced by DiskFdoExecuteWmiMethod().

DiskReregWorker()

VOID NTAPI DiskReregWorker	(	IN PDEVICE_OBJECT	DevObject,
		IN PVOID	Context
	)

Definition at line 1499 of file diskwmi.c.

{
    PDISKREREGREQUEST reregRequest;
    NTSTATUS status;
    PDEVICE_OBJECT deviceObject;
    PIRP irp;

    PAGED_CODE();
    UNREFERENCED_PARAMETER(DevObject);

    NT_ASSERT(Context != NULL);
    _Analysis_assume_(Context != NULL);

    do
    {
        reregRequest = (PDISKREREGREQUEST)ExInterlockedPopEntryList(
                             &DiskReregHead,
                             &DiskReregSpinlock);

        if (reregRequest != NULL)
        {
            deviceObject = reregRequest->DeviceObject;
            irp = reregRequest->Irp;

            status = IoWMIRegistrationControl(deviceObject,
                                              WMIREG_ACTION_UPDATE_GUIDS);

            //
            // Release remove lock and free irp, now that we are done
            // processing this
            //
            ClassReleaseRemoveLock(deviceObject, irp);

            IoFreeMdl(irp->MdlAddress);
            IoFreeIrp(irp);

            FREE_POOL(reregRequest);

        } else {

            NT_ASSERTMSG("Disk Re-registration request list should not be empty", FALSE);

            status = STATUS_INTERNAL_ERROR;
        }

        if (!NT_SUCCESS(status))
        {
            TracePrint((TRACE_LEVEL_ERROR, TRACE_FLAG_GENERAL, "DiskReregWorker: Reregistration failed %x\n",
                        status));
        }

    } while (InterlockedDecrement(&DiskReregWorkItems));

    IoFreeWorkItem((PIO_WORKITEM)Context);
}

DiskSendFailurePredictIoctl()

NTSTATUS DiskSendFailurePredictIoctl	(	PFUNCTIONAL_DEVICE_EXTENSION	FdoExtension,
		PSTORAGE_PREDICT_FAILURE	checkFailure
	)

Definition at line 854 of file diskwmi.c.

{
    KEVENT event;
    PDEVICE_OBJECT deviceObject;
    IO_STATUS_BLOCK ioStatus = { 0 };
    PIRP irp;
    NTSTATUS status;

    PAGED_CODE();

    KeInitializeEvent(&event, SynchronizationEvent, FALSE);

    deviceObject = IoGetAttachedDeviceReference(FdoExtension->DeviceObject);

    irp = IoBuildDeviceIoControlRequest(
                    IOCTL_STORAGE_PREDICT_FAILURE,
                    deviceObject,
                    NULL,
                    0,
                    checkFailure,
                    sizeof(STORAGE_PREDICT_FAILURE),
                    FALSE,
                    &event,
                    &ioStatus);

    if (irp != NULL)
    {
        status = IoCallDriver(deviceObject, irp);
        if (status == STATUS_PENDING)
        {
            KeWaitForSingleObject(&event, Executive, KernelMode, FALSE, NULL);
            status = ioStatus.Status;
        }

    } else {
        status = STATUS_INSUFFICIENT_RESOURCES;
    }

    ObDereferenceObject(deviceObject);

    return status;
}

Referenced by DiskDetectFailurePrediction(), and DiskFdoQueryWmiDataBlock().

DiskWmiFunctionControl()

NTSTATUS NTAPI DiskWmiFunctionControl	(	IN PDEVICE_OBJECT	DeviceObject,
		IN PIRP	Irp,
		IN ULONG	GuidIndex,
		IN CLASSENABLEDISABLEFUNCTION	Function,
		IN BOOLEAN	Enable
	)

Definition at line 2366 of file diskwmi.c.

{
    NTSTATUS status = STATUS_SUCCESS;
    PFUNCTIONAL_DEVICE_EXTENSION fdoExtension = DeviceObject->DeviceExtension;

    PAGED_CODE();

    if ((Function == DataBlockCollection) && Enable)
    {
        if ((GuidIndex == SmartStatusGuid) ||
            (GuidIndex == SmartDataGuid) ||
            (GuidIndex ==