//.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- DtWorkItemStructCreate -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.
//
static DtStatus DtWorkItemStructCreate(
DtWorkItemStruct* pWorkItemStruct,
DtDvcObject* pDevice)
{
#ifdef WINBUILD
#ifdef USES_KMDF
pWorkItemStruct->m_pIoWorkItem = IoAllocateWorkItem(
WdfDeviceWdmGetDeviceObject(pDevice->m_WdfDevice));
if (pWorkItemStruct->m_pIoWorkItem == NULL)
return DT_STATUS_OUT_OF_RESOURCES;
#else
#ifdef USES_NDIS
// Nothing to do
#else
pWorkItemStruct->m_pIoWorkItem = IoAllocateWorkItem(pDevice->m_pWdmDevice);
if (pWorkItemStruct->m_pIoWorkItem == NULL)
return DT_STATUS_OUT_OF_RESOURCES;
#endif // USES_NDIS
#endif // USES_KMDF
#else
//pWorkItemStruct->m_pWork = kmalloc(sizeof(struct work_struct), GFP_ATOMIC);
//if (pWorkItemStruct->m_pWork == NULL)
// return DT_STATUS_OUT_OF_MEMORY;
#endif
return DT_STATUS_OK;
}
VOID
LsuWriteLogErrorEntry(
IN PDEVICE_OBJECT DeviceObject,
IN PLSU_ERROR_LOG_ENTRY ErrorLogEntry
){
if(KeGetCurrentIrql() > PASSIVE_LEVEL) {
PIO_WORKITEM workitem;
PLSU_ERRORLOGCTX context;
context = ExAllocatePoolWithTag(NonPagedPool, sizeof(LSU_ERRORLOGCTX), LSU_POOLTAG_ERRORLOGWORKER);
if(context == NULL) {
KDPrintM(DBG_OTHER_ERROR, ("Allocating context failed.\n"));
return;
}
RtlCopyMemory(&context->ErrorLogEntry, ErrorLogEntry, sizeof(LSU_ERROR_LOG_ENTRY));
workitem = IoAllocateWorkItem(DeviceObject);
if(workitem == NULL) {
KDPrintM(DBG_OTHER_ERROR, ("IoAllocateWorkItem() failed.\n"));
return;
}
context->IoWorkItem = workitem;
IoQueueWorkItem(workitem, WriteErrorLogWorker, DelayedWorkQueue, context);
} else {
_WriteLogErrorEntry(DeviceObject, ErrorLogEntry);
}
}
KWorkItem::
KWorkItem(
_In_ PDEVICE_OBJECT DeviceObj,
_In_ PIO_WORKITEM_ROUTINE Callback,
_In_ PVOID Context,
_In_ WORK_QUEUE_TYPE QueueType
)
: m_Callback( Callback )
, m_Context ( Context )
, m_QueueType( QueueType )
/*++
Routine Description:
Constructor.
Sets up callback handler for the workitem and performs initialization.
Arguments:
None.
Return Value:
None.
--*/
{
m_WorkItem = IoAllocateWorkItem( DeviceObj );
}
VOID
DokanStopCheckThread(
__in PDokanDCB Dcb)
/*++
Routine Description:
exits DokanTimeoutThread
--*/
{
PIO_WORKITEM workItem;
DDbgPrint("==> DokanStopCheckThread\n");
workItem = IoAllocateWorkItem(Dcb->DeviceObject);
if (workItem != NULL) {
IoQueueWorkItem(workItem, DokanStopCheckThreadInternal, DelayedWorkQueue, workItem);
KeSetEvent(&Dcb->KillEvent, 0, FALSE);
if (Dcb->TimeoutThread) {
KeWaitForSingleObject(Dcb->TimeoutThread, Executive,
KernelMode, FALSE, NULL);
ObDereferenceObject(Dcb->TimeoutThread);
Dcb->TimeoutThread = NULL;
}
} else {
DDbgPrint("Can't create work item.");
}
DDbgPrint("<== DokanStopCheckThread\n");
}
BOOLEAN ChewCreate(VOID (*Worker)(PVOID), PVOID WorkerContext)
{
PWORK_ITEM Item;
Item = ExAllocatePoolWithTag(NonPagedPool,
sizeof(WORK_ITEM),
CHEW_TAG);
if (Item)
{
Item->WorkItem = IoAllocateWorkItem(WorkQueueDevice);
if (!Item->WorkItem)
{
ExFreePool(Item);
return FALSE;
}
Item->Worker = Worker;
Item->WorkerContext = WorkerContext;
ExInterlockedInsertTailList(&WorkQueue, &Item->Entry, &WorkQueueLock);
KeResetEvent(&WorkQueueClear);
IoQueueWorkItem(Item->WorkItem, ChewWorkItem, DelayedWorkQueue, Item);
return TRUE;
}
else
{
return FALSE;
}
}
static NTSTATUS
Pkt0DispatchWrite(PDEVICE_OBJECT DeviceObject, PIRP Irp)
{
PIO_WORKITEM work_item;
KIRQL old_irql;
NTSTATUS status;
work_item = IoAllocateWorkItem(DeviceObject);
if (work_item == NULL) {
return Pkt0CompleteIrp(Irp, STATUS_INSUFFICIENT_RESOURCES, 0);
}
KeAcquireSpinLock(&Pkt0ContextLock, &old_irql);
if (Pkt0Context->closing) {
status = Pkt0CompleteIrp(Irp, STATUS_PIPE_CLOSING, 0);
} else {
InsertTailList(&Pkt0Context->irp_write_queue, &Irp->Tail.Overlay.ListEntry);
IoMarkIrpPending(Irp);
status = STATUS_PENDING;
}
KeReleaseSpinLock(&Pkt0ContextLock, old_irql);
if (status == STATUS_PENDING) {
IoQueueWorkItemEx(work_item, Pkt0DeferredWrite, DelayedWorkQueue, NULL);
} else {
IoFreeWorkItem(work_item);
}
return status;
}
NDIS_HANDLE
EXPORT
NdisAllocateIoWorkItem(
IN NDIS_HANDLE NdisObjectHandle)
{
PLOGICAL_ADAPTER Adapter = NdisObjectHandle;
return IoAllocateWorkItem(Adapter->NdisMiniportBlock.PhysicalDeviceObject);
}
NTSTATUS KrnlHlprWorkItemQueue(_In_ PDEVICE_OBJECT pWDMDevice,
_In_ IO_WORKITEM_ROUTINE* pWorkItemFn)
{
#if DBG
DbgPrintEx(DPFLTR_IHVNETWORK_ID,
DPFLTR_INFO_LEVEL,
" ---> KrnlHlprWorkItemQueue()\n");
#endif /// DBG
NT_ASSERT(pWDMDevice);
NT_ASSERT(pWorkItemFn);
NTSTATUS status = STATUS_SUCCESS;
PIO_WORKITEM pIOWorkItem = 0;
#pragma warning(push)
#pragma warning(disable: 6014) /// pIOWorkItem is cleaned up in pWorkItemFn
pIOWorkItem = IoAllocateWorkItem(pWDMDevice);
if(pIOWorkItem == 0)
{
status = STATUS_UNSUCCESSFUL;
DbgPrintEx(DPFLTR_IHVNETWORK_ID,
DPFLTR_ERROR_LEVEL,
" !!!! KrnlHlprWorkItemQueue : IoAllocateWorkItem() [status: %#x]\n",
status);
HLPR_BAIL;
}
#pragma warning(pop)
IoQueueWorkItem(pIOWorkItem,
pWorkItemFn,
DelayedWorkQueue,
(PVOID)pIOWorkItem);
HLPR_BAIL_LABEL:
if(status != STATUS_SUCCESS &&
pIOWorkItem)
IoFreeWorkItem(pIOWorkItem);
#if DBG
DbgPrintEx(DPFLTR_IHVNETWORK_ID,
DPFLTR_INFO_LEVEL,
" <--- KrnlHlprWorkItemQueue() [status: %#x]\n",
status);
#endif /// DBG
return status;
}
NTSTATUS DriverEntry(PDRIVER_OBJECT DrvObj, PUNICODE_STRING RegPath)
{
PDEVICE_OBJECT DevObj;
NTSTATUS status;
status = IoCreateDevice(DrvObj, 0, &deviceName, FILE_DEVICE_UNKNOWN, FILE_DEVICE_SECURE_OPEN,
FALSE, &DevObj);
if(NT_SUCCESS(status)) {
status = IoCreateSymbolicLink (&deviceLink, &deviceName);
DrvObj->MajorFunction[IRP_MJ_CREATE] = DtraceOpen;
DrvObj->MajorFunction[IRP_MJ_CLOSE] = DtraceClose;
DrvObj->MajorFunction[IRP_MJ_DEVICE_CONTROL] = DtraceIoctl;
DrvObj->DriverUnload = DtraceUnload;
}
if (!NT_SUCCESS(status)) {
IoDeleteSymbolicLink(&deviceLink);
if(DevObj)
IoDeleteDevice( DevObj);
return status;
}
status = IoCreateSymbolicLink(&deviceHelperLink, &deviceName);
if (!NT_SUCCESS(status))
dprintf("DriverEntry: dtrace helper creation failed\n");
DtraceGetSystemHertz();
DtraceWinOSKernelModuleInfo();
DtraceWinOSInitFunctions();
if (DtraceWinOSHackData() == 0)
dprintf("DriverEntry: DtraceWinOSPortData() hack data failure\n");
if (PsSetLoadImageNotifyRoutine(ProcKernelModuleLoaded) != STATUS_SUCCESS)
dprintf("DriverEntry: failed to register PsSetLoadImageNotifyRoutine\n");
WorkItem1 = IoAllocateWorkItem(DevObj);
WorkItem2 = IoAllocateWorkItem(DevObj);
int_morecore();
(void) dtrace_load((void *) RegPath);
return status;
}
static NTSTATUS
XenStub_QueueWorkItem(PDEVICE_OBJECT device_object, PIO_WORKITEM_ROUTINE routine, PVOID context)
{
PIO_WORKITEM work_item;
NTSTATUS status = STATUS_SUCCESS;
work_item = IoAllocateWorkItem(device_object);
IoQueueWorkItem(work_item, routine, DelayedWorkQueue, context);
return status;
}
static VOID
XenNet_SuspendResume(PKDPC dpc, PVOID context, PVOID arg1, PVOID arg2)
{
struct xennet_info *xi = context;
KIRQL old_irql;
PIO_WORKITEM resume_work_item;
UNREFERENCED_PARAMETER(dpc);
UNREFERENCED_PARAMETER(arg1);
UNREFERENCED_PARAMETER(arg2);
FUNCTION_ENTER();
switch (xi->device_state->suspend_resume_state_pdo)
{
case SR_STATE_SUSPENDING:
KdPrint((__DRIVER_NAME " New state SUSPENDING\n"));
KeAcquireSpinLock(&xi->rx_lock, &old_irql);
if (xi->rx_id_free == NET_RX_RING_SIZE)
{
xi->device_state->suspend_resume_state_fdo = SR_STATE_SUSPENDING;
KdPrint((__DRIVER_NAME " Notifying event channel %d\n", xi->device_state->pdo_event_channel));
xi->vectors.EvtChn_Notify(xi->vectors.context, xi->device_state->pdo_event_channel);
}
KeReleaseSpinLock(&xi->rx_lock, old_irql);
break;
case SR_STATE_RESUMING:
KdPrint((__DRIVER_NAME " New state SR_STATE_RESUMING\n"));
/* do it like this so we don't race and double-free the work item */
resume_work_item = IoAllocateWorkItem(xi->fdo);
KeAcquireSpinLock(&xi->resume_lock, &old_irql);
if (xi->resume_work_item || xi->device_state->suspend_resume_state_fdo == SR_STATE_RESUMING)
{
KeReleaseSpinLock(&xi->resume_lock, old_irql);
IoFreeWorkItem(resume_work_item);
return;
}
xi->resume_work_item = resume_work_item;
KeReleaseSpinLock(&xi->resume_lock, old_irql);
IoQueueWorkItem(xi->resume_work_item, XenNet_ResumeWorkItem, DelayedWorkQueue, xi);
break;
default:
KdPrint((__DRIVER_NAME " New state %d\n", xi->device_state->suspend_resume_state_fdo));
xi->device_state->suspend_resume_state_fdo = xi->device_state->suspend_resume_state_pdo;
KdPrint((__DRIVER_NAME " Notifying event channel %d\n", xi->device_state->pdo_event_channel));
xi->vectors.EvtChn_Notify(xi->vectors.context, xi->device_state->pdo_event_channel);
break;
}
KeMemoryBarrier();
FUNCTION_EXIT();
}
NTSTATUS NTAPI HoldIoRequests(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
{
NTSTATUS ntStatus;
PIO_WORKITEM item;
PDEVICE_EXTENSION deviceExtension;
PWORKER_THREAD_CONTEXT context;
FreeBT_DbgPrint(3, ("FBTUSB: HoldIoRequests: Entered\n"));
deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
deviceExtension->QueueState = HoldRequests;
context = (PWORKER_THREAD_CONTEXT) ExAllocatePool(NonPagedPool, sizeof(WORKER_THREAD_CONTEXT));
if(context)
{
item = IoAllocateWorkItem(DeviceObject);
context->Irp = Irp;
context->DeviceObject = DeviceObject;
context->WorkItem = item;
if (item)
{
IoMarkIrpPending(Irp);
IoQueueWorkItem(item, HoldIoRequestsWorkerRoutine, DelayedWorkQueue, context);
ntStatus = STATUS_PENDING;
}
else
{
FreeBT_DbgPrint(3, ("FBTUSB: HoldIoRequests: Failed to allocate memory for workitem\n"));
ExFreePool(context);
ntStatus = STATUS_INSUFFICIENT_RESOURCES;
}
}
else
{
FreeBT_DbgPrint(1, ("FBTUSB: HoldIoRequests: Failed to alloc memory for worker thread context\n"));
ntStatus = STATUS_INSUFFICIENT_RESOURCES;
}
FreeBT_DbgPrint(3, ("FBTUSB: HoldIoRequests: Leaving\n"));
return ntStatus;
}
NTSTATUS LklPostRequest(PIRPCONTEXT irp_context, PIRP irp)
{
ASSERT(irp_context);
ASSERT(irp_context->id.type == IRP_CONTEXT && irp_context->id.size == sizeof(IRPCONTEXT));
IoMarkIrpPending(irp);
irp_context->work_item = IoAllocateWorkItem(irp_context->target_device);
IoQueueWorkItem(irp_context->work_item, LklDequeueRequest, CriticalWorkQueue ,irp_context);
FreeIrpContext(irp_context);
return STATUS_PENDING;
}
VOID DokanStopEventNotificationThread(__in PDokanDCB Dcb) {
PIO_WORKITEM workItem;
DDbgPrint("==> DokanStopEventNotificationThread\n");
workItem = IoAllocateWorkItem(Dcb->DeviceObject);
if (workItem != NULL) {
IoQueueWorkItem(workItem, DokanStopEventNotificationThreadInternal,
DelayedWorkQueue, workItem);
} else {
DDbgPrint("Can't create work item.");
}
DDbgPrint("<== DokanStopEventNotificationThread\n");
}
static VOID
V4vStartDehibernateWorkItem(PDEVICE_OBJECT fdo)
{
PIO_WORKITEM wi;
TraceNotice(("starting dehibrination work item.\n"));
wi = IoAllocateWorkItem(fdo);
if (wi == NULL) {
TraceError(("failed to allocate dehibernate work item - out of memory.\n"));
return;
}
IoQueueWorkItem(wi, V4vDehibernateWorkItem, DelayedWorkQueue, wi);
}
NTSTATUS
HidUmdfInternalIoctl(
_In_ PDEVICE_OBJECT DeviceObject,
_Inout_ PIRP Irp
)
{
PIO_WORKITEM workitem;
NTSTATUS status;
//
// If Irql is not dispatch, handle it in the current thread.
// otherwise queue a workitem because UMDF cannot handle io request at
// dispatch level. HID minidriver receives IOCTLS normally at
// passive level but it may receive ping pong irp at dispatch level in some
// error conditions.
//
if (KeGetCurrentIrql() < DISPATCH_LEVEL) {
return HidUmdfInternalIoctlWorker(DeviceObject, Irp);
}
//
// allocate and queue workitem
//
workitem = IoAllocateWorkItem(DeviceObject);
if (workitem == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
KdPrint(("HidUmdf: Failed to allocate workitem to process IOCTL "
"0x%p devobj 0x%p sent at dispatch level. status 0x%x\n",
Irp, DeviceObject, status));
Irp->IoStatus.Status = status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return status;
}
//
// since we are going to return STATUS_PENDING, mark the irp pending.
//
IoMarkIrpPending(Irp);
//
// Queue the workitem. The workitem will be freed by the worker function.
//
IoQueueWorkItemEx(workitem, IoctlWorkItemEx, DelayedWorkQueue, Irp);
return STATUS_PENDING;
}
static NTSTATUS vboxUsbPwrIoWaitCompletionAndPostAsync(IN PVBOXUSBDEV_EXT pDevExt, IN PIRP pIrp)
{
NTSTATUS Status = STATUS_INSUFFICIENT_RESOURCES;
PVBOXUSB_IOASYNC_CTX pCtx = (PVBOXUSB_IOASYNC_CTX)vboxUsbMemAlloc(sizeof (*pCtx));
Assert(pCtx);
if (pCtx)
{
PIO_WORKITEM pWrkItem = IoAllocateWorkItem(pDevExt->pFDO);
Assert(pWrkItem);
if (pWrkItem)
{
pCtx->pWrkItem = pWrkItem;
pCtx->pIrp = pIrp;
IoMarkIrpPending(pIrp);
IoQueueWorkItem(pWrkItem, vboxUsbPwrIoWaitCompletionAndPostAsyncWorker, DelayedWorkQueue, pCtx);
return STATUS_PENDING;
}
vboxUsbMemFree(pCtx);
}
return Status;
}
VOID
DokanStopCheckThread(
__in PDokanDCB Dcb)
/*++
Routine Description:
exits DokanTimeoutThread
--*/
{
PIO_WORKITEM workItem;
DDbgPrint("==> DokanStopCheckThread\n");
workItem = IoAllocateWorkItem(Dcb->DeviceObject);
if (workItem != NULL) {
IoQueueWorkItem(workItem, DokanStopCheckThreadInternal, DelayedWorkQueue, workItem);
} else {
DDbgPrint("Can't create work item.");
}
DDbgPrint("<== DokanStopCheckThread\n");
}
NTSTATUS Log_Print(LOG_LEVEL Level, LPCSTR pszFormat, ...)
{
NTSTATUS Status = STATUS_SUCCESS;
LARGE_INTEGER SystemTime, LocalTime;
TIME_FIELDS TimeFields;
PLOG_COUNTED_STRING Line = NULL;
va_list args;
KIRQL Irql = KeGetCurrentIrql();
LPCSTR StrLevel = " :";
if (!LogFile)
return STATUS_INVALID_DEVICE_STATE;
if (Irql > DISPATCH_LEVEL)
return STATUS_INVALID_LEVEL;
KeQuerySystemTime(&SystemTime);
ExSystemTimeToLocalTime(&SystemTime, &LocalTime);
RtlTimeToTimeFields(&LocalTime, &TimeFields);
Line = ExAllocatePoolWithTag(NonPagedPool, MAX_LOG_STRING_SIZE + FIELD_OFFSET(LOG_COUNTED_STRING, Data), LogAllocationTag);
if (!Line)
return STATUS_INSUFFICIENT_RESOURCES;
switch (Level)
{
case LL_FATAL:
#if DBG
DbgBreakPointWithStatus(DBG_STATUS_FATAL);
#endif
StrLevel = "FATAL :";
break;
case LL_ERROR:
StrLevel = "ERROR :";
break;
case LL_WARNING:
StrLevel = "WARNING:";
break;
case LL_INFO:
StrLevel = "INFO :";
break;
case LL_VERBOSE:
StrLevel = "VERBOSE:";
break;
case LL_DEBUG:
StrLevel = "DEBUG :";
break;
}
Status = StringCbPrintfA(Line->Data, MAX_LOG_STRING_SIZE, "%04u.%02u.%02u %02u:%02u:%02u.%03u PR:0x%04X TH:0x%04X IL:%d %s ",
TimeFields.Year,
TimeFields.Month,
TimeFields.Day,
TimeFields.Hour,
TimeFields.Minute,
TimeFields.Second,
TimeFields.Milliseconds,
(ULONG)PsGetCurrentProcessId() & 0xFFFF,
(ULONG)PsGetCurrentThreadId() & 0xFFFF,
(ULONG)Irql,
StrLevel);
if (SUCCEEDED(Status))
{
va_start(args, pszFormat);
Line->DataLength = (USHORT)strlen(Line->Data);
Status = StringCbVPrintfA(Line->Data + Line->DataLength, MAX_LOG_STRING_SIZE - Line->DataLength, pszFormat, args);
if (SUCCEEDED(Status))
{
Line->DataLength = (USHORT)strlen(Line->Data);
if (Irql != PASSIVE_LEVEL) {
PIO_WORKITEM pWorkItem = IoAllocateWorkItem(LogDeviceObject);
InterlockedIncrement(&LogScheduledPrints);
IoQueueWorkItemEx(pWorkItem, Log_WriteWorker, DelayedWorkQueue, Line);
Status = STATUS_PENDING;
}
else
{
Status = Log_WriteLine(Line);
}
}
va_end(args);
}
if (Status != STATUS_PENDING)
ExFreePoolWithTag(Line, LogAllocationTag);
return Status;
}
PSECONDARY
Secondary_Create(
IN PIRP_CONTEXT IrpContext,
IN PVOLUME_DEVICE_OBJECT VolDo
)
{
NTSTATUS status;
PSECONDARY secondary;
OBJECT_ATTRIBUTES objectAttributes;
LARGE_INTEGER timeOut;
ULONG tryQuery;
BOOLEAN isLocalAddress;
UNREFERENCED_PARAMETER( IrpContext );
secondary = ExAllocatePoolWithTag( NonPagedPool, sizeof(SECONDARY), NDFAT_ALLOC_TAG );
if (secondary == NULL) {
ASSERT( NDFAT_INSUFFICIENT_RESOURCES );
return NULL;
}
RtlZeroMemory( secondary, sizeof(SECONDARY) );
#define MAX_TRY_QUERY 2
for (tryQuery = 0; tryQuery < MAX_TRY_QUERY; tryQuery++) {
status = ((PVOLUME_DEVICE_OBJECT) FatData.DiskFileSystemDeviceObject)->
NdfsCallback.QueryPrimaryAddress( &VolDo->NetdiskPartitionInformation, &secondary->PrimaryAddress, &isLocalAddress );
DebugTrace2( 0, Dbg2, ("Secondary_Create: QueryPrimaryAddress %08x\n", status) );
if (NT_SUCCESS(status)) {
DebugTrace2( 0, Dbg2, ("Secondary_Create: QueryPrimaryAddress: Found PrimaryAddress :%02x:%02x:%02x:%02x:%02x:%02x/%d\n",
secondary->PrimaryAddress.Node[0], secondary->PrimaryAddress.Node[1],
secondary->PrimaryAddress.Node[2], secondary->PrimaryAddress.Node[3],
secondary->PrimaryAddress.Node[4], secondary->PrimaryAddress.Node[5],
NTOHS(secondary->PrimaryAddress.Port)) );
break;
}
}
if (status != STATUS_SUCCESS || isLocalAddress) {
ExFreePoolWithTag( secondary, NDFAT_ALLOC_TAG );
return NULL;
}
secondary->Flags = SECONDARY_FLAG_INITIALIZING;
ExInitializeResourceLite( &secondary->RecoveryResource );
ExInitializeResourceLite( &secondary->Resource );
ExInitializeResourceLite( &secondary->SessionResource );
ExInitializeResourceLite( &secondary->CreateResource );
ExInitializeFastMutex( &secondary->FastMutex );
secondary->ReferenceCount = 1;
VolDo_Reference( VolDo );
secondary->VolDo = VolDo;
secondary->ThreadHandle = NULL;
InitializeListHead( &secondary->RecoveryCcbQueue );
ExInitializeFastMutex( &secondary->RecoveryCcbQMutex );
InitializeListHead( &secondary->DeletedFcbQueue );
KeQuerySystemTime( &secondary->TryCloseTime );
secondary->TryCloseWorkItem = IoAllocateWorkItem( (PDEVICE_OBJECT)VolDo );
KeInitializeEvent( &secondary->ReadyEvent, NotificationEvent, FALSE );
InitializeListHead( &secondary->RequestQueue );
KeInitializeSpinLock( &secondary->RequestQSpinLock );
KeInitializeEvent( &secondary->RequestEvent, NotificationEvent, FALSE );
////////////////////////////////////////
InitializeListHead( &secondary->FcbQueue );
ExInitializeFastMutex( &secondary->FcbQMutex );
/////////////////////////////////////////
InitializeObjectAttributes( &objectAttributes, NULL, OBJ_KERNEL_HANDLE, NULL, NULL );
secondary->SessionId = 0;
status = PsCreateSystemThread( &secondary->ThreadHandle,
THREAD_ALL_ACCESS,
&objectAttributes,
NULL,
NULL,
SecondaryThreadProc,
secondary );
if (!NT_SUCCESS(status)) {
ASSERT( NDFAT_UNEXPECTED );
Secondary_Close( secondary );
return NULL;
}
status = ObReferenceObjectByHandle( secondary->ThreadHandle,
FILE_READ_DATA,
NULL,
KernelMode,
&secondary->ThreadObject,
NULL );
if (!NT_SUCCESS(status)) {
ASSERT( NDFAT_INSUFFICIENT_RESOURCES );
Secondary_Close( secondary );
return NULL;
}
secondary->SessionId ++;
timeOut.QuadPart = -NDFAT_TIME_OUT;
status = KeWaitForSingleObject( &secondary->ReadyEvent,
Executive,
KernelMode,
FALSE,
&timeOut );
if (status != STATUS_SUCCESS) {
ASSERT( NDFAT_BUG );
Secondary_Close( secondary );
return NULL;
}
KeClearEvent( &secondary->ReadyEvent );
ExAcquireFastMutex( &secondary->FastMutex );
if (!FlagOn(secondary->Thread.Flags, SECONDARY_THREAD_FLAG_START) ||
FlagOn(secondary->Thread.Flags, SECONDARY_THREAD_FLAG_STOPED)) {
if (secondary->Thread.SessionStatus != STATUS_DISK_CORRUPT_ERROR) {
ExReleaseFastMutex( &secondary->FastMutex );
Secondary_Close( secondary );
return NULL;
}
}
ASSERT( secondary->Thread.SessionContext.SessionSlotCount != 0 );
ClearFlag( secondary->Flags, SECONDARY_FLAG_INITIALIZING );
SetFlag( secondary->Flags, SECONDARY_FLAG_START );
ExReleaseFastMutex( &secondary->FastMutex );
DebugTrace2( 0, Dbg2,
("Secondary_Create: The client thread are ready secondary = %p\n", secondary) );
return secondary;
}
NTSTATUS
DriverEntry(
_In_ PDRIVER_OBJECT DriverObject,
_In_ PUNICODE_STRING RegistryPath
)
/*++
Routine Description:
This is the initialization routine for the Fat file system
device driver. This routine creates the device object for the FileSystem
device and performs all other driver initialization.
Arguments:
DriverObject - Pointer to driver object created by the system.
Return Value:
NTSTATUS - The function value is the final status from the initialization
operation.
--*/
{
USHORT MaxDepth;
NTSTATUS Status;
UNICODE_STRING UnicodeString;
FS_FILTER_CALLBACKS FilterCallbacks;
UNICODE_STRING ValueName;
ULONG Value;
UNREFERENCED_PARAMETER( RegistryPath );
//
// Create the device object for disks. To avoid problems with filters who
// know this name, we must keep it.
//
RtlInitUnicodeString( &UnicodeString, L"\\Fat" );
Status = IoCreateDevice( DriverObject,
0,
&UnicodeString,
FILE_DEVICE_DISK_FILE_SYSTEM,
0,
FALSE,
&FatDiskFileSystemDeviceObject );
if (!NT_SUCCESS( Status )) {
return Status;
}
//
// Create the device object for "cdroms".
//
RtlInitUnicodeString( &UnicodeString, L"\\FatCdrom" );
Status = IoCreateDevice( DriverObject,
0,
&UnicodeString,
FILE_DEVICE_CD_ROM_FILE_SYSTEM,
0,
FALSE,
&FatCdromFileSystemDeviceObject );
if (!NT_SUCCESS( Status )) {
IoDeleteDevice( FatDiskFileSystemDeviceObject);
return Status;
}
#pragma prefast( push )
#pragma prefast( disable:28155, "these are all correct" )
#pragma prefast( disable:28169, "these are all correct" )
#pragma prefast( disable:28175, "this is a filesystem, touching FastIoDispatch is allowed" )
DriverObject->DriverUnload = FatUnload;
//
// Note that because of the way data caching is done, we set neither
// the Direct I/O or Buffered I/O bit in DeviceObject->Flags. If
// data is not in the cache, or the request is not buffered, we may,
// set up for Direct I/O by hand.
//
//
// Initialize the driver object with this driver's entry points.
//
DriverObject->MajorFunction[IRP_MJ_CREATE] = (PDRIVER_DISPATCH)FatFsdCreate;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = (PDRIVER_DISPATCH)FatFsdClose;
DriverObject->MajorFunction[IRP_MJ_READ] = (PDRIVER_DISPATCH)FatFsdRead;
DriverObject->MajorFunction[IRP_MJ_WRITE] = (PDRIVER_DISPATCH)FatFsdWrite;
DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = (PDRIVER_DISPATCH)FatFsdQueryInformation;
DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = (PDRIVER_DISPATCH)FatFsdSetInformation;
DriverObject->MajorFunction[IRP_MJ_QUERY_EA] = (PDRIVER_DISPATCH)FatFsdQueryEa;
DriverObject->MajorFunction[IRP_MJ_SET_EA] = (PDRIVER_DISPATCH)FatFsdSetEa;
DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] = (PDRIVER_DISPATCH)FatFsdFlushBuffers;
DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] = (PDRIVER_DISPATCH)FatFsdQueryVolumeInformation;
DriverObject->MajorFunction[IRP_MJ_SET_VOLUME_INFORMATION] = (PDRIVER_DISPATCH)FatFsdSetVolumeInformation;
DriverObject->MajorFunction[IRP_MJ_CLEANUP] = (PDRIVER_DISPATCH)FatFsdCleanup;
DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = (PDRIVER_DISPATCH)FatFsdDirectoryControl;
DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = (PDRIVER_DISPATCH)FatFsdFileSystemControl;
DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] = (PDRIVER_DISPATCH)FatFsdLockControl;
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = (PDRIVER_DISPATCH)FatFsdDeviceControl;
DriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = (PDRIVER_DISPATCH)FatFsdShutdown;
DriverObject->MajorFunction[IRP_MJ_PNP] = (PDRIVER_DISPATCH)FatFsdPnp;
DriverObject->FastIoDispatch = &FatFastIoDispatch;
RtlZeroMemory(&FatFastIoDispatch, sizeof(FatFastIoDispatch));
FatFastIoDispatch.SizeOfFastIoDispatch = sizeof(FAST_IO_DISPATCH);
FatFastIoDispatch.FastIoCheckIfPossible = FatFastIoCheckIfPossible; // CheckForFastIo
FatFastIoDispatch.FastIoRead = FsRtlCopyRead; // Read
FatFastIoDispatch.FastIoWrite = FsRtlCopyWrite; // Write
FatFastIoDispatch.FastIoQueryBasicInfo = FatFastQueryBasicInfo; // QueryBasicInfo
FatFastIoDispatch.FastIoQueryStandardInfo = FatFastQueryStdInfo; // QueryStandardInfo
FatFastIoDispatch.FastIoLock = FatFastLock; // Lock
FatFastIoDispatch.FastIoUnlockSingle = FatFastUnlockSingle; // UnlockSingle
FatFastIoDispatch.FastIoUnlockAll = FatFastUnlockAll; // UnlockAll
FatFastIoDispatch.FastIoUnlockAllByKey = FatFastUnlockAllByKey; // UnlockAllByKey
FatFastIoDispatch.FastIoQueryNetworkOpenInfo = FatFastQueryNetworkOpenInfo;
FatFastIoDispatch.AcquireForCcFlush = FatAcquireForCcFlush;
FatFastIoDispatch.ReleaseForCcFlush = FatReleaseForCcFlush;
FatFastIoDispatch.MdlRead = FsRtlMdlReadDev;
FatFastIoDispatch.MdlReadComplete = FsRtlMdlReadCompleteDev;
FatFastIoDispatch.PrepareMdlWrite = FsRtlPrepareMdlWriteDev;
FatFastIoDispatch.MdlWriteComplete = FsRtlMdlWriteCompleteDev;
#pragma prefast( pop )
//
// Initialize the filter callbacks we use.
//
RtlZeroMemory( &FilterCallbacks,
sizeof(FS_FILTER_CALLBACKS) );
FilterCallbacks.SizeOfFsFilterCallbacks = sizeof(FS_FILTER_CALLBACKS);
FilterCallbacks.PreAcquireForSectionSynchronization = FatFilterCallbackAcquireForCreateSection;
Status = FsRtlRegisterFileSystemFilterCallbacks( DriverObject,
&FilterCallbacks );
if (!NT_SUCCESS( Status )) {
IoDeleteDevice( FatDiskFileSystemDeviceObject );
IoDeleteDevice( FatCdromFileSystemDeviceObject );
return Status;
}
//
// Initialize the global data structures
//
//
// The FatData record
//
RtlZeroMemory( &FatData, sizeof(FAT_DATA));
FatData.NodeTypeCode = FAT_NTC_DATA_HEADER;
FatData.NodeByteSize = sizeof(FAT_DATA);
InitializeListHead(&FatData.VcbQueue);
FatData.DriverObject = DriverObject;
FatData.DiskFileSystemDeviceObject = FatDiskFileSystemDeviceObject;
FatData.CdromFileSystemDeviceObject = FatCdromFileSystemDeviceObject;
//
// This list head keeps track of closes yet to be done.
//
InitializeListHead( &FatData.AsyncCloseList );
InitializeListHead( &FatData.DelayedCloseList );
FatData.FatCloseItem = IoAllocateWorkItem( FatDiskFileSystemDeviceObject);
if (FatData.FatCloseItem == NULL) {
IoDeleteDevice (FatDiskFileSystemDeviceObject);
IoDeleteDevice (FatCdromFileSystemDeviceObject);
return STATUS_INSUFFICIENT_RESOURCES;
}
//
// Allocate the zero page
//
FatData.ZeroPage = ExAllocatePoolWithTag( NonPagedPoolNx, PAGE_SIZE, 'ZtaF' );
if (FatData.ZeroPage == NULL) {
IoDeleteDevice (FatDiskFileSystemDeviceObject);
IoDeleteDevice (FatCdromFileSystemDeviceObject);
return STATUS_INSUFFICIENT_RESOURCES;
}
RtlZeroMemory( FatData.ZeroPage, PAGE_SIZE );
//
// Now initialize our general purpose spinlock (gag) and figure out how
// deep and wide we want our delayed lists (along with fooling ourselves
// about the lookaside depths).
//
KeInitializeSpinLock( &FatData.GeneralSpinLock );
switch ( MmQuerySystemSize() ) {
case MmSmallSystem:
MaxDepth = 4;
FatMaxDelayedCloseCount = FAT_MAX_DELAYED_CLOSES;
break;
case MmMediumSystem:
MaxDepth = 8;
FatMaxDelayedCloseCount = 4 * FAT_MAX_DELAYED_CLOSES;
break;
case MmLargeSystem:
default:
MaxDepth = 16;
FatMaxDelayedCloseCount = 16 * FAT_MAX_DELAYED_CLOSES;
break;
}
//
// Initialize the cache manager callback routines
//
FatData.CacheManagerCallbacks.AcquireForLazyWrite = &FatAcquireFcbForLazyWrite;
FatData.CacheManagerCallbacks.ReleaseFromLazyWrite = &FatReleaseFcbFromLazyWrite;
FatData.CacheManagerCallbacks.AcquireForReadAhead = &FatAcquireFcbForReadAhead;
FatData.CacheManagerCallbacks.ReleaseFromReadAhead = &FatReleaseFcbFromReadAhead;
FatData.CacheManagerNoOpCallbacks.AcquireForLazyWrite = &FatNoOpAcquire;
FatData.CacheManagerNoOpCallbacks.ReleaseFromLazyWrite = &FatNoOpRelease;
FatData.CacheManagerNoOpCallbacks.AcquireForReadAhead = &FatNoOpAcquire;
FatData.CacheManagerNoOpCallbacks.ReleaseFromReadAhead = &FatNoOpRelease;
//
// Set up global pointer to our process.
//
FatData.OurProcess = PsGetCurrentProcess();
//
// Setup the number of processors we support for statistics as the current number
// running.
//
#if (NTDDI_VERSION >= NTDDI_VISTA)
FatData.NumberProcessors = KeQueryActiveProcessorCount( NULL );
#else
FatData.NumberProcessors = KeNumberProcessors;
#endif
//
// Read the registry to determine if we are in ChicagoMode.
//
ValueName.Buffer = COMPATIBILITY_MODE_VALUE_NAME;
ValueName.Length = sizeof(COMPATIBILITY_MODE_VALUE_NAME) - sizeof(WCHAR);
ValueName.MaximumLength = sizeof(COMPATIBILITY_MODE_VALUE_NAME);
Status = FatGetCompatibilityModeValue( &ValueName, &Value );
if (NT_SUCCESS(Status) && FlagOn(Value, 1)) {
FatData.ChicagoMode = FALSE;
} else {
FatData.ChicagoMode = TRUE;
}
//
// Read the registry to determine if we are going to generate LFNs
// for valid 8.3 names with extended characters.
//
ValueName.Buffer = CODE_PAGE_INVARIANCE_VALUE_NAME;
ValueName.Length = sizeof(CODE_PAGE_INVARIANCE_VALUE_NAME) - sizeof(WCHAR);
ValueName.MaximumLength = sizeof(CODE_PAGE_INVARIANCE_VALUE_NAME);
Status = FatGetCompatibilityModeValue( &ValueName, &Value );
if (NT_SUCCESS(Status) && FlagOn(Value, 1)) {
FatData.CodePageInvariant = FALSE;
} else {
FatData.CodePageInvariant = TRUE;
}
//
// Initialize our global resource and fire up the lookaside lists.
//
ExInitializeResourceLite( &FatData.Resource );
ExInitializeNPagedLookasideList( &FatIrpContextLookasideList,
NULL,
NULL,
POOL_NX_ALLOCATION | POOL_RAISE_IF_ALLOCATION_FAILURE,
sizeof(IRP_CONTEXT),
TAG_IRP_CONTEXT,
MaxDepth );
ExInitializeNPagedLookasideList( &FatNonPagedFcbLookasideList,
NULL,
NULL,
POOL_NX_ALLOCATION | POOL_RAISE_IF_ALLOCATION_FAILURE,
sizeof(NON_PAGED_FCB),
TAG_FCB_NONPAGED,
MaxDepth );
ExInitializeNPagedLookasideList( &FatEResourceLookasideList,
NULL,
NULL,
POOL_NX_ALLOCATION | POOL_RAISE_IF_ALLOCATION_FAILURE,
sizeof(ERESOURCE),
TAG_ERESOURCE,
MaxDepth );
ExInitializeSListHead( &FatCloseContextSList );
ExInitializeFastMutex( &FatCloseQueueMutex );
KeInitializeEvent( &FatReserveEvent, SynchronizationEvent, TRUE );
//
// Register the file system with the I/O system
//
IoRegisterFileSystem(FatDiskFileSystemDeviceObject);
ObReferenceObject (FatDiskFileSystemDeviceObject);
IoRegisterFileSystem(FatCdromFileSystemDeviceObject);
ObReferenceObject (FatCdromFileSystemDeviceObject);
//
// Find out if we are running an a FujitsuFMR machine.
//
FatData.FujitsuFMR = FatIsFujitsuFMR();
#if (NTDDI_VERSION >= NTDDI_WIN8)
//
// Find out global disk accounting state, cache the result
//
FatDiskAccountingEnabled = PsIsDiskCountersEnabled();
#endif
//
// And return to our caller
//
return( STATUS_SUCCESS );
}
NTSTATUS KrnlHlprWorkItemQueue(_In_ PDEVICE_OBJECT pWDMDevice,
_In_ IO_WORKITEM_ROUTINE* pWorkItemFn,
_In_ CLASSIFY_DATA* pClassifyData,
_In_ REDIRECT_DATA* pRedirectData,
_In_opt_ VOID* pContext) /* 0 */
{
#if DBG
DbgPrintEx(DPFLTR_IHVNETWORK_ID,
DPFLTR_INFO_LEVEL,
" ---> KrnlHlprWorkItemQueue()\n");
#endif /// DBG
NT_ASSERT(pWDMDevice);
NT_ASSERT(pWorkItemFn);
NT_ASSERT(pClassifyData);
NT_ASSERT(pRedirectData);
NTSTATUS status = STATUS_SUCCESS;
PIO_WORKITEM pIOWorkItem = 0;
WORKITEM_DATA* pWorkItemData = 0;
#pragma warning(push)
#pragma warning(disable: 6014) /// pIOWorkItem is cleaned up in KrnlHlprWorkItemDataDestroy
pIOWorkItem = IoAllocateWorkItem(pWDMDevice);
if(pIOWorkItem == 0)
{
status = STATUS_UNSUCCESSFUL;
DbgPrintEx(DPFLTR_IHVNETWORK_ID,
DPFLTR_ERROR_LEVEL,
" !!!! KrnlHlprWorkItemQueue : IoAllocateWorkItem() [status: %#x]\n",
status);
HLPR_BAIL;
}
#pragma warning(pop)
status = KrnlHlprWorkItemDataCreate(&pWorkItemData,
pClassifyData,
pRedirectData,
pIOWorkItem,
pContext);
HLPR_BAIL_ON_FAILURE(status);
IoQueueWorkItem(pWorkItemData->pIOWorkItem,
pWorkItemFn,
DelayedWorkQueue,
(PVOID)pWorkItemData);
HLPR_BAIL_LABEL:
if(status != STATUS_SUCCESS &&
pWorkItemData)
KrnlHlprWorkItemDataDestroy(&pWorkItemData);
#if DBG
DbgPrintEx(DPFLTR_IHVNETWORK_ID,
DPFLTR_INFO_LEVEL,
" <--- KrnlHlprWorkItemQueue() [status: %#x]\n",
status);
#endif /// DBG
return status;
}
NTSTATUS
NTAPI
DriverEntry(PDRIVER_OBJECT DriverObject,
PUNICODE_STRING RegistryPath)
{
PDEVICE_OBJECT DeviceObject;
UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(L"\\Fat");
NTSTATUS Status;
/* Create a device object */
Status = IoCreateDevice(DriverObject,
0,
&DeviceName,
FILE_DEVICE_DISK_FILE_SYSTEM,
0,
FALSE,
&DeviceObject);
if (!NT_SUCCESS(Status)) return Status;
/* Zero global storage */
RtlZeroMemory(&FatGlobalData, sizeof(FAT_GLOBAL_DATA));
FatGlobalData.DriverObject = DriverObject;
FatGlobalData.DiskDeviceObject = DeviceObject;
FatGlobalData.SystemProcess = PsGetCurrentProcess();
/* Fill major function handlers */
DriverObject->MajorFunction[IRP_MJ_CLOSE] = FatClose;
DriverObject->MajorFunction[IRP_MJ_CREATE] = FatCreate;
DriverObject->MajorFunction[IRP_MJ_READ] = FatRead;
DriverObject->MajorFunction[IRP_MJ_WRITE] = FatWrite;
DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = FatFileSystemControl;
DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = FatQueryInformation;
DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = FatSetInformation;
DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = FatDirectoryControl;
DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] = FatQueryVolumeInfo;
DriverObject->MajorFunction[IRP_MJ_SET_VOLUME_INFORMATION] = FatSetVolumeInfo;
DriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = FatShutdown;
DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] = FatLockControl;
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = FatDeviceControl;
DriverObject->MajorFunction[IRP_MJ_CLEANUP] = FatCleanup;
DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] = FatFlushBuffers;
//DriverObject->MajorFunction[IRP_MJ_QUERY_EA]
//DriverObject->MajorFunction[IRP_MJ_SET_EA]
//DriverObject->MajorFunction[IRP_MJ_PNP]
DriverObject->DriverUnload = NULL;
/* Initialize cache manager callbacks */
FatGlobalData.CacheMgrCallbacks.AcquireForLazyWrite = FatAcquireForLazyWrite;
FatGlobalData.CacheMgrCallbacks.ReleaseFromLazyWrite = FatReleaseFromLazyWrite;
FatGlobalData.CacheMgrCallbacks.AcquireForReadAhead = FatAcquireForReadAhead;
FatGlobalData.CacheMgrCallbacks.ReleaseFromReadAhead = FatReleaseFromReadAhead;
FatGlobalData.CacheMgrNoopCallbacks.AcquireForLazyWrite = FatNoopAcquire;
FatGlobalData.CacheMgrNoopCallbacks.ReleaseFromLazyWrite = FatNoopRelease;
FatGlobalData.CacheMgrNoopCallbacks.AcquireForReadAhead = FatNoopAcquire;
FatGlobalData.CacheMgrNoopCallbacks.ReleaseFromReadAhead = FatNoopRelease;
/* Initialize Fast I/O dispatchers */
FatInitFastIoRoutines(&FatGlobalData.FastIoDispatch);
DriverObject->FastIoDispatch = &FatGlobalData.FastIoDispatch;
/* Initialize lookaside lists */
ExInitializeNPagedLookasideList(&FatGlobalData.NonPagedFcbList,
NULL,
NULL,
0,
sizeof(FCB),
TAG_FCB,
0);
ExInitializeNPagedLookasideList(&FatGlobalData.ResourceList,
NULL,
NULL,
0,
sizeof(ERESOURCE),
TAG_CCB,
0);
ExInitializeNPagedLookasideList(&FatGlobalData.IrpContextList,
NULL,
NULL,
0,
sizeof(FAT_IRP_CONTEXT),
TAG_IRP,
0);
/* Initialize synchronization resource for the global data */
ExInitializeResourceLite(&FatGlobalData.Resource);
/* Initialize queued close stuff */
InitializeListHead(&FatGlobalData.AsyncCloseList);
InitializeListHead(&FatGlobalData.DelayedCloseList);
FatGlobalData.FatCloseItem = IoAllocateWorkItem(DeviceObject);
ExInitializeFastMutex(&FatCloseQueueMutex);
/* Initialize global VCB list */
InitializeListHead(&FatGlobalData.VcbListHead);
/* Register and reference our filesystem */
IoRegisterFileSystem(DeviceObject);
ObReferenceObject(DeviceObject);
return STATUS_SUCCESS;
}
NTSTATUS
CdInitializeGlobalData (
__in PDRIVER_OBJECT DriverObject,
__in PDEVICE_OBJECT FileSystemDeviceObject
)
/*++
Routine Description:
This routine initializes the global cdfs data structures.
Arguments:
DriverObject - Supplies the driver object for CDFS.
FileSystemDeviceObject - Supplies the device object for CDFS.
Return Value:
None.
--*/
{
//
// Start by initializing the FastIoDispatch Table.
//
RtlZeroMemory( &CdFastIoDispatch, sizeof( FAST_IO_DISPATCH ));
CdFastIoDispatch.SizeOfFastIoDispatch = sizeof(FAST_IO_DISPATCH);
#pragma prefast(push)
#pragma prefast(disable:28155, "these are all correct")
CdFastIoDispatch.FastIoCheckIfPossible = CdFastIoCheckIfPossible; // CheckForFastIo
CdFastIoDispatch.FastIoRead = FsRtlCopyRead; // Read
CdFastIoDispatch.FastIoQueryBasicInfo = CdFastQueryBasicInfo; // QueryBasicInfo
CdFastIoDispatch.FastIoQueryStandardInfo = CdFastQueryStdInfo; // QueryStandardInfo
CdFastIoDispatch.FastIoLock = CdFastLock; // Lock
CdFastIoDispatch.FastIoUnlockSingle = CdFastUnlockSingle; // UnlockSingle
CdFastIoDispatch.FastIoUnlockAll = CdFastUnlockAll; // UnlockAll
CdFastIoDispatch.FastIoUnlockAllByKey = CdFastUnlockAllByKey; // UnlockAllByKey
//
// This callback has been replaced by CdFilterCallbackAcquireForCreateSection.
//
CdFastIoDispatch.AcquireFileForNtCreateSection = NULL;
CdFastIoDispatch.ReleaseFileForNtCreateSection = CdReleaseForCreateSection;
CdFastIoDispatch.FastIoQueryNetworkOpenInfo = CdFastQueryNetworkInfo; // QueryNetworkInfo
CdFastIoDispatch.MdlRead = FsRtlMdlReadDev;
CdFastIoDispatch.MdlReadComplete = FsRtlMdlReadCompleteDev;
CdFastIoDispatch.PrepareMdlWrite = FsRtlPrepareMdlWriteDev;
CdFastIoDispatch.MdlWriteComplete = FsRtlMdlWriteCompleteDev;
#pragma prefast(pop)
//
// Initialize the CdData structure.
//
RtlZeroMemory( &CdData, sizeof( CD_DATA ));
CdData.NodeTypeCode = CDFS_NTC_DATA_HEADER;
CdData.NodeByteSize = sizeof( CD_DATA );
CdData.DriverObject = DriverObject;
CdData.FileSystemDeviceObject = FileSystemDeviceObject;
InitializeListHead( &CdData.VcbQueue );
ExInitializeResourceLite( &CdData.DataResource );
//
// Initialize the cache manager callback routines
//
CdData.CacheManagerCallbacks.AcquireForLazyWrite = &CdAcquireForCache;
CdData.CacheManagerCallbacks.ReleaseFromLazyWrite = &CdReleaseFromCache;
CdData.CacheManagerCallbacks.AcquireForReadAhead = &CdAcquireForCache;
CdData.CacheManagerCallbacks.ReleaseFromReadAhead = &CdReleaseFromCache;
CdData.CacheManagerVolumeCallbacks.AcquireForLazyWrite = &CdNoopAcquire;
CdData.CacheManagerVolumeCallbacks.ReleaseFromLazyWrite = &CdNoopRelease;
CdData.CacheManagerVolumeCallbacks.AcquireForReadAhead = &CdNoopAcquire;
CdData.CacheManagerVolumeCallbacks.ReleaseFromReadAhead = &CdNoopRelease;
//
// Initialize the lock mutex and the async and delay close queues.
//
ExInitializeFastMutex( &CdData.CdDataMutex );
InitializeListHead( &CdData.AsyncCloseQueue );
InitializeListHead( &CdData.DelayedCloseQueue );
CdData.CloseItem = IoAllocateWorkItem (FileSystemDeviceObject);
if (CdData.CloseItem == NULL) {
ExDeleteResourceLite( &CdData.DataResource );
return STATUS_INSUFFICIENT_RESOURCES;
}
//
// Do the initialization based on the system size.
//
switch (MmQuerySystemSize()) {
case MmSmallSystem:
CdData.IrpContextMaxDepth = 4;
CdData.MaxDelayedCloseCount = 8;
CdData.MinDelayedCloseCount = 2;
break;
case MmMediumSystem:
CdData.IrpContextMaxDepth = 8;
CdData.MaxDelayedCloseCount = 24;
CdData.MinDelayedCloseCount = 6;
break;
case MmLargeSystem:
CdData.IrpContextMaxDepth = 32;
CdData.MaxDelayedCloseCount = 72;
CdData.MinDelayedCloseCount = 18;
break;
}
return STATUS_SUCCESS;
}
/*
* Runs the keyboard IOCTL_INTERNAL dispatch.
*/
NTSTATUS NTAPI
i8042KbdInternalDeviceControl(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
PIO_STACK_LOCATION Stack;
PI8042_KEYBOARD_EXTENSION DeviceExtension;
NTSTATUS Status;
Stack = IoGetCurrentIrpStackLocation(Irp);
Irp->IoStatus.Information = 0;
DeviceExtension = (PI8042_KEYBOARD_EXTENSION)DeviceObject->DeviceExtension;
switch (Stack->Parameters.DeviceIoControl.IoControlCode)
{
case IOCTL_INTERNAL_KEYBOARD_CONNECT:
{
SIZE_T Size;
PIO_WORKITEM WorkItem = NULL;
PI8042_HOOK_WORKITEM WorkItemData = NULL;
TRACE_(I8042PRT, "IRP_MJ_INTERNAL_DEVICE_CONTROL / IOCTL_INTERNAL_KEYBOARD_CONNECT\n");
if (Stack->Parameters.DeviceIoControl.InputBufferLength != sizeof(CONNECT_DATA))
{
Status = STATUS_INVALID_PARAMETER;
goto cleanup;
}
DeviceExtension->KeyboardData =
*((PCONNECT_DATA)Stack->Parameters.DeviceIoControl.Type3InputBuffer);
/* Send IOCTL_INTERNAL_I8042_HOOK_KEYBOARD to device stack */
WorkItem = IoAllocateWorkItem(DeviceObject);
if (!WorkItem)
{
WARN_(I8042PRT, "IoAllocateWorkItem() failed\n");
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
WorkItemData = ExAllocatePoolWithTag(
NonPagedPool,
sizeof(I8042_HOOK_WORKITEM),
I8042PRT_TAG);
if (!WorkItemData)
{
WARN_(I8042PRT, "ExAllocatePoolWithTag() failed\n");
Status = STATUS_NO_MEMORY;
goto cleanup;
}
WorkItemData->WorkItem = WorkItem;
WorkItemData->Irp = Irp;
/* Initialize extension */
DeviceExtension->Common.Type = Keyboard;
Size = DeviceExtension->Common.PortDeviceExtension->Settings.KeyboardDataQueueSize * sizeof(KEYBOARD_INPUT_DATA);
DeviceExtension->KeyboardBuffer = ExAllocatePoolWithTag(
NonPagedPool,
Size,
I8042PRT_TAG);
if (!DeviceExtension->KeyboardBuffer)
{
WARN_(I8042PRT, "ExAllocatePoolWithTag() failed\n");
Status = STATUS_NO_MEMORY;
goto cleanup;
}
RtlZeroMemory(DeviceExtension->KeyboardBuffer, Size);
KeInitializeDpc(
&DeviceExtension->DpcKeyboard,
i8042KbdDpcRoutine,
DeviceExtension);
DeviceExtension->PowerWorkItem = IoAllocateWorkItem(DeviceObject);
if (!DeviceExtension->PowerWorkItem)
{
WARN_(I8042PRT, "IoAllocateWorkItem() failed\n");
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
DeviceExtension->DebugWorkItem = IoAllocateWorkItem(DeviceObject);
if (!DeviceExtension->DebugWorkItem)
{
WARN_(I8042PRT, "IoAllocateWorkItem() failed\n");
Status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
DeviceExtension->Common.PortDeviceExtension->KeyboardExtension = DeviceExtension;
DeviceExtension->Common.PortDeviceExtension->Flags |= KEYBOARD_CONNECTED;
i8042InitializeKeyboardAttributes(DeviceExtension);
IoMarkIrpPending(Irp);
/* FIXME: DeviceExtension->KeyboardHook.IsrWritePort = ; */
DeviceExtension->KeyboardHook.QueueKeyboardPacket = i8042KbdQueuePacket;
DeviceExtension->KeyboardHook.CallContext = DeviceExtension;
IoQueueWorkItem(WorkItem,
i8042SendHookWorkItem,
DelayedWorkQueue,
WorkItemData);
Status = STATUS_PENDING;
break;
cleanup:
if (DeviceExtension->KeyboardBuffer)
ExFreePoolWithTag(DeviceExtension->KeyboardBuffer, I8042PRT_TAG);
if (DeviceExtension->PowerWorkItem)
IoFreeWorkItem(DeviceExtension->PowerWorkItem);
if (DeviceExtension->DebugWorkItem)
IoFreeWorkItem(DeviceExtension->DebugWorkItem);
if (WorkItem)
IoFreeWorkItem(WorkItem);
if (WorkItemData)
ExFreePoolWithTag(WorkItemData, I8042PRT_TAG);
break;
}
case IOCTL_INTERNAL_KEYBOARD_DISCONNECT:
{
TRACE_(I8042PRT, "IRP_MJ_INTERNAL_DEVICE_CONTROL / IOCTL_INTERNAL_KEYBOARD_DISCONNECT\n");
/* MSDN says that operation is to implemented.
* To implement it, we just have to do:
* DeviceExtension->KeyboardData.ClassService = NULL;
*/
Status = STATUS_NOT_IMPLEMENTED;
break;
}
case IOCTL_INTERNAL_I8042_HOOK_KEYBOARD:
{
TRACE_(I8042PRT, "IRP_MJ_INTERNAL_DEVICE_CONTROL / IOCTL_INTERNAL_I8042_HOOK_KEYBOARD\n");
/* Nothing to do here */
Status = STATUS_SUCCESS;
break;
}
case IOCTL_KEYBOARD_QUERY_ATTRIBUTES:
{
PKEYBOARD_ATTRIBUTES KeyboardAttributes;
/* FIXME: KeyboardAttributes are not initialized anywhere */
TRACE_(I8042PRT, "IRP_MJ_INTERNAL_DEVICE_CONTROL / IOCTL_KEYBOARD_QUERY_ATTRIBUTES\n");
if (Stack->Parameters.DeviceIoControl.OutputBufferLength < sizeof(KEYBOARD_ATTRIBUTES))
{
Status = STATUS_BUFFER_TOO_SMALL;
break;
}
KeyboardAttributes = Irp->AssociatedIrp.SystemBuffer;
*KeyboardAttributes = DeviceExtension->KeyboardAttributes;
Irp->IoStatus.Information = sizeof(KEYBOARD_ATTRIBUTES);
Status = STATUS_SUCCESS;
break;
Status = STATUS_NOT_IMPLEMENTED;
break;
}
case IOCTL_KEYBOARD_QUERY_TYPEMATIC:
{
DPRINT1("IOCTL_KEYBOARD_QUERY_TYPEMATIC not implemented\n");
Status = STATUS_NOT_IMPLEMENTED;
break;
}
case IOCTL_KEYBOARD_SET_TYPEMATIC:
{
DPRINT1("IOCTL_KEYBOARD_SET_TYPEMATIC not implemented\n");
Status = STATUS_NOT_IMPLEMENTED;
break;
}
case IOCTL_KEYBOARD_QUERY_INDICATOR_TRANSLATION:
{
TRACE_(I8042PRT, "IRP_MJ_INTERNAL_DEVICE_CONTROL / IOCTL_KEYBOARD_QUERY_INDICATOR_TRANSLATION\n");
/* We should check the UnitID, but it's kind of pointless as
* all keyboards are supposed to have the same one
*/
if (Stack->Parameters.DeviceIoControl.OutputBufferLength < sizeof(LOCAL_KEYBOARD_INDICATOR_TRANSLATION))
{
Status = STATUS_BUFFER_TOO_SMALL;
}
else
{
RtlCopyMemory(
Irp->AssociatedIrp.SystemBuffer,
&IndicatorTranslation,
sizeof(LOCAL_KEYBOARD_INDICATOR_TRANSLATION));
Irp->IoStatus.Information = sizeof(LOCAL_KEYBOARD_INDICATOR_TRANSLATION);
Status = STATUS_SUCCESS;
}
break;
}
case IOCTL_KEYBOARD_QUERY_INDICATORS:
{
TRACE_(I8042PRT, "IRP_MJ_INTERNAL_DEVICE_CONTROL / IOCTL_KEYBOARD_QUERY_INDICATORS\n");
if (Stack->Parameters.DeviceIoControl.InputBufferLength < sizeof(KEYBOARD_INDICATOR_PARAMETERS))
{
Status = STATUS_BUFFER_TOO_SMALL;
}
else
{
RtlCopyMemory(
Irp->AssociatedIrp.SystemBuffer,
&DeviceExtension->KeyboardIndicators,
sizeof(KEYBOARD_INDICATOR_PARAMETERS));
Irp->IoStatus.Information = sizeof(KEYBOARD_INDICATOR_PARAMETERS);
Status = STATUS_SUCCESS;
}
break;
}
case IOCTL_KEYBOARD_SET_INDICATORS:
{
TRACE_(I8042PRT, "IRP_MJ_INTERNAL_DEVICE_CONTROL / IOCTL_KEYBOARD_SET_INDICATORS\n");
if (Stack->Parameters.DeviceIoControl.InputBufferLength < sizeof(KEYBOARD_INDICATOR_PARAMETERS))
{
Status = STATUS_BUFFER_TOO_SMALL;
}
else
{
RtlCopyMemory(
&DeviceExtension->KeyboardIndicators,
Irp->AssociatedIrp.SystemBuffer,
sizeof(KEYBOARD_INDICATOR_PARAMETERS));
Status = STATUS_PENDING;
IoMarkIrpPending(Irp);
IoStartPacket(DeviceObject, Irp, NULL, NULL);
}
break;
}
default:
{
ERR_(I8042PRT, "IRP_MJ_INTERNAL_DEVICE_CONTROL / unknown ioctl code 0x%lx\n",
Stack->Parameters.DeviceIoControl.IoControlCode);
ASSERT(FALSE);
return ForwardIrpAndForget(DeviceObject, Irp);
}
}
Irp->IoStatus.Status = Status;
if (Status != STATUS_PENDING)
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return Status;
}
NTSTATUS
NTAPI
WdmAudInstallDevice(
IN PDRIVER_OBJECT DriverObject)
{
UNICODE_STRING DeviceName = RTL_CONSTANT_STRING(L"\\Device\\wdmaud");
UNICODE_STRING SymlinkName = RTL_CONSTANT_STRING(L"\\DosDevices\\wdmaud");
PDEVICE_OBJECT DeviceObject;
NTSTATUS Status;
PWDMAUD_DEVICE_EXTENSION DeviceExtension;
DPRINT("WdmAudInstallDevice called\n");
Status = IoCreateDevice(DriverObject,
sizeof(WDMAUD_DEVICE_EXTENSION),
&DeviceName,
FILE_DEVICE_KS,
0,
FALSE,
&DeviceObject);
if (!NT_SUCCESS(Status))
{
DPRINT1("IoCreateDevice failed with %x\n", Status);
return Status;
}
/* get device extension */
DeviceExtension = (PWDMAUD_DEVICE_EXTENSION)DeviceObject->DeviceExtension;
RtlZeroMemory(DeviceExtension, sizeof(WDMAUD_DEVICE_EXTENSION));
/* allocate work item */
DeviceExtension->WorkItem = IoAllocateWorkItem(DeviceObject);
if (!DeviceExtension->WorkItem)
{
/* failed to allocate work item */
IoDeleteDevice(DeviceObject);
return STATUS_INSUFFICIENT_RESOURCES;
}
/* register device interfaces */
Status = WdmAudRegisterDeviceInterface(DeviceObject, DeviceExtension);
if (!NT_SUCCESS(Status))
{
DPRINT1("WdmRegisterDeviceInterface failed with %x\n", Status);
IoDeleteDevice(DeviceObject);
return Status;
}
/* initialize sysaudio device list */
InitializeListHead(&DeviceExtension->SysAudioDeviceList);
/* initialize client context device list */
InitializeListHead(&DeviceExtension->WdmAudClientList);
/* initialize spinlock */
KeInitializeSpinLock(&DeviceExtension->Lock);
/* initialization completion event */
KeInitializeEvent(&DeviceExtension->InitializationCompletionEvent, NotificationEvent, FALSE);
/* initialize timer */
IoInitializeTimer(DeviceObject, WdmAudTimerRoutine, (PVOID)WdmAudTimerRoutine);
/* find available sysaudio devices */
Status = WdmAudOpenSysAudioDevices(DeviceObject, DeviceExtension);
if (!NT_SUCCESS(Status))
{
DPRINT1("WdmAudOpenSysAudioDevices failed with %x\n", Status);
IoDeleteSymbolicLink(&SymlinkName);
IoDeleteDevice(DeviceObject);
return Status;
}
/* allocate ks device header */
Status = KsAllocateDeviceHeader(&DeviceExtension->DeviceHeader, 0, NULL);
if (!NT_SUCCESS(Status))
{
DPRINT1("KsAllocateDeviceHeader failed with %x\n", Status);
IoDeleteSymbolicLink(&SymlinkName);
IoDeleteDevice(DeviceObject);
return Status;
}
/* start the timer */
IoStartTimer(DeviceObject);
DeviceObject->Flags |= DO_DIRECT_IO | DO_POWER_PAGABLE;
DeviceObject->Flags &= ~ DO_DEVICE_INITIALIZING;
return STATUS_SUCCESS;
}
NTSTATUS
DriverEntry(
IN PDRIVER_OBJECT DriverObject,
IN PUNICODE_STRING RegistryPath
)
/*++
Routine Description:
This is the initialization routine for the Fat file system
device driver. This routine creates the device object for the FileSystem
device and performs all other driver initialization.
Arguments:
DriverObject - Pointer to driver object created by the system.
Return Value:
NTSTATUS - The function value is the final status from the initialization
operation.
--*/
{
USHORT MaxDepth;
NTSTATUS Status;
UNICODE_STRING UnicodeString;
FS_FILTER_CALLBACKS FilterCallbacks;
UNICODE_STRING ValueName;
ULONG Value;
#if __NDAS_FAT__
UNICODE_STRING linkString;
UNICODE_STRING functionName;
UNICODE_STRING tempUnicode;
#endif
#if DBG
DbgPrint( "NdasFat DriverEntry %s %s\n", __DATE__, __TIME__ );
#endif
#if __NDAS_FAT_DBG__
FatDebugTraceLevel |= DEBUG_TRACE_ERROR;
FatDebugTraceLevel |= DEBUG_TRACE_CLEANUP;
FatDebugTraceLevel |= DEBUG_TRACE_CLOSE;
FatDebugTraceLevel |= DEBUG_TRACE_CREATE;
FatDebugTraceLevel |= DEBUG_TRACE_DIRCTRL;
FatDebugTraceLevel |= DEBUG_TRACE_EA;
FatDebugTraceLevel |= DEBUG_TRACE_FILEINFO;
FatDebugTraceLevel |= DEBUG_TRACE_FSCTRL;
FatDebugTraceLevel |= DEBUG_TRACE_LOCKCTRL;
FatDebugTraceLevel |= DEBUG_TRACE_READ;
FatDebugTraceLevel |= DEBUG_TRACE_VOLINFO;
FatDebugTraceLevel |= DEBUG_TRACE_WRITE;
FatDebugTraceLevel |= DEBUG_TRACE_DEVCTRL;
FatDebugTraceLevel |= DEBUG_TRACE_FLUSH;
FatDebugTraceLevel |= DEBUG_TRACE_PNP;
FatDebugTraceLevel |= DEBUG_TRACE_SHUTDOWN;
FatDebugTraceLevel = 0x00000009;
//FatDebugTraceLevel |= DEBUG_TRACE_FSCTRL;
//FatDebugTraceLevel |= DEBUG_INFO_DEVCTRL;
FatDebugTraceLevel |= DEBUG_INFO_FSCTRL;
FatDebugTraceLevel |= DEBUG_INFO_READ;
FatDebugTraceLevel |= DEBUG_INFO_SECONDARY;
//FatDebugTraceLevel |= DEBUG_INFO_PRIMARY;
FatDebugTraceLevel |= DEBUG_INFO_FILOBSUP;
FatDebugTraceLevel |= DEBUG_TRACE_PNP;
FatDebugTraceLevel |= DEBUG_TRACE_SHUTDOWN;
FatDebugTraceLevel |= DEBUG_INFO_FILEINFO;
FatDebugTraceLevel |= DEBUG_INFO_CREATE;
FatDebugTraceLevel |= DEBUG_INFO_STRUCSUP;
FatDebugTraceLevel |= DEBUG_INFO_CLEANUP;
FatDebugTraceLevel |= DEBUG_INFO_CLOSE;
FatDebugTraceLevel |= DEBUG_INFO_ALL;
FatDebugTraceLevel |= DEBUG_INFO_WRITE;
//FatDebugTraceLevel |= DEBUG_TRACE_WRITE;
FatDebugTraceLevel &= ~DEBUG_TRACE_UNWIND;
//FatDebugTraceLevel = 0xFFFFFFFFFFFFFFFF;
//FatDebugTraceLevel |= DEBUG_TRACE_STRUCSUP;
FatDebugTraceLevel |= DEBUG_INFO_FILEINFO;
//FatDebugTraceLevel |= DEBUG_TRACE_FILEINFO;
DebugTrace2( 0, DEBUG_INFO_ALL, ("sizeof(NDFS_WINXP_REPLY_HEADER) = %d\n", sizeof(NDFS_WINXP_REPLY_HEADER)) );
#endif
#if __NDAS_FAT_WIN2K_SUPPORT__
PsGetVersion( &gOsMajorVersion,
&gOsMinorVersion,
NULL,
NULL );
RtlInitUnicodeString( &functionName, L"SeFilterToken" );
NdasFatSeFilterToken = MmGetSystemRoutineAddress( &functionName );
if (IS_WINDOWSXP_OR_LATER()) { // to prevent incomprehensible error
RtlInitUnicodeString( &functionName, L"CcMdlWriteAbort" );
NdasFatCcMdlWriteAbort = MmGetSystemRoutineAddress( &functionName );
}
RtlInitUnicodeString( &functionName, L"KeAreApcsDisabled" );
NdasFatKeAreApcsDisabled = MmGetSystemRoutineAddress( &functionName );
RtlInitUnicodeString( &functionName, L"KeAreAllApcsDisabled" );
NdasFatKeAreAllApcsDisabled = MmGetSystemRoutineAddress( &functionName );
RtlInitUnicodeString( &functionName, L"FsRtlRegisterFileSystemFilterCallbacks" );
NdasFatFsRtlRegisterFileSystemFilterCallbacks = MmGetSystemRoutineAddress( &functionName );
RtlInitUnicodeString( &functionName, L"FsRtlAreVolumeStartupApplicationsComplete" );
NdasFatFsRtlAreVolumeStartupApplicationsComplete = MmGetSystemRoutineAddress( &functionName );
RtlInitUnicodeString( &functionName, L"MmDoesFileHaveUserWritableReferences" );
NdasFatMmDoesFileHaveUserWritableReferences = MmGetSystemRoutineAddress( &functionName );
#endif
#if __NDAS_FAT__
RtlInitUnicodeString( &UnicodeString, NDAS_FAT_CONTROL_DEVICE_NAME );
Status = IoCreateDevice( DriverObject,
0, // has no device extension
&UnicodeString,
FILE_DEVICE_NULL,
0,
FALSE,
&FatControlDeviceObject );
if (!NT_SUCCESS( Status )) {
return Status;
}
RtlInitUnicodeString( &linkString, NDAS_FAT_CONTROL_LINK_NAME );
Status = IoCreateSymbolicLink( &linkString, &UnicodeString );
if (!NT_SUCCESS(Status)) {
IoDeleteDevice( FatControlDeviceObject );
return Status;
}
#endif
#if __NDAS_FAT__
RtlInitUnicodeString( &UnicodeString, NDAS_FAT_DEVICE_NAME );
Status = IoCreateDevice( DriverObject,
sizeof(VOLUME_DEVICE_OBJECT) - sizeof(DEVICE_OBJECT),
&UnicodeString,
FILE_DEVICE_DISK_FILE_SYSTEM,
0,
FALSE,
&FatDiskFileSystemDeviceObject );
if (!NT_SUCCESS(Status)) {
IoDeleteSymbolicLink( &linkString );
IoDeleteDevice( FatControlDeviceObject );
return Status;
}
RtlZeroMemory( (PUCHAR)FatDiskFileSystemDeviceObject+sizeof(DEVICE_OBJECT),
sizeof(VOLUME_DEVICE_OBJECT)-sizeof(DEVICE_OBJECT) );
#else
//
// Create the device object for disks. To avoid problems with filters who
// know this name, we must keep it.
//
RtlInitUnicodeString( &UnicodeString, L"\\Fat" );
Status = IoCreateDevice( DriverObject,
0,
&UnicodeString,
FILE_DEVICE_DISK_FILE_SYSTEM,
0,
FALSE,
&FatDiskFileSystemDeviceObject );
if (!NT_SUCCESS( Status )) {
return Status;
}
#endif
#if !__NDAS_FAT__
//
// Create the device object for "cdroms".
//
RtlInitUnicodeString( &UnicodeString, L"\\FatCdrom" );
Status = IoCreateDevice( DriverObject,
0,
&UnicodeString,
FILE_DEVICE_CD_ROM_FILE_SYSTEM,
0,
FALSE,
&FatCdromFileSystemDeviceObject );
if (!NT_SUCCESS( Status )) {
IoDeleteDevice( FatDiskFileSystemDeviceObject);
return Status;
}
#endif
DriverObject->DriverUnload = FatUnload;
//
// Note that because of the way data caching is done, we set neither
// the Direct I/O or Buffered I/O bit in DeviceObject->Flags. If
// data is not in the cache, or the request is not buffered, we may,
// set up for Direct I/O by hand.
//
//
// Initialize the driver object with this driver's entry points.
//
DriverObject->MajorFunction[IRP_MJ_CREATE] = (PDRIVER_DISPATCH)FatFsdCreate;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = (PDRIVER_DISPATCH)FatFsdClose;
DriverObject->MajorFunction[IRP_MJ_READ] = (PDRIVER_DISPATCH)FatFsdRead;
DriverObject->MajorFunction[IRP_MJ_WRITE] = (PDRIVER_DISPATCH)FatFsdWrite;
DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = (PDRIVER_DISPATCH)FatFsdQueryInformation;
DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = (PDRIVER_DISPATCH)FatFsdSetInformation;
DriverObject->MajorFunction[IRP_MJ_QUERY_EA] = (PDRIVER_DISPATCH)FatFsdQueryEa;
DriverObject->MajorFunction[IRP_MJ_SET_EA] = (PDRIVER_DISPATCH)FatFsdSetEa;
DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] = (PDRIVER_DISPATCH)FatFsdFlushBuffers;
DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] = (PDRIVER_DISPATCH)FatFsdQueryVolumeInformation;
DriverObject->MajorFunction[IRP_MJ_SET_VOLUME_INFORMATION] = (PDRIVER_DISPATCH)FatFsdSetVolumeInformation;
DriverObject->MajorFunction[IRP_MJ_CLEANUP] = (PDRIVER_DISPATCH)FatFsdCleanup;
DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = (PDRIVER_DISPATCH)FatFsdDirectoryControl;
DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = (PDRIVER_DISPATCH)FatFsdFileSystemControl;
DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] = (PDRIVER_DISPATCH)FatFsdLockControl;
DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = (PDRIVER_DISPATCH)FatFsdDeviceControl;
DriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = (PDRIVER_DISPATCH)FatFsdShutdown;
DriverObject->MajorFunction[IRP_MJ_PNP] = (PDRIVER_DISPATCH)FatFsdPnp;
DriverObject->FastIoDispatch = &FatFastIoDispatch;
RtlZeroMemory(&FatFastIoDispatch, sizeof(FatFastIoDispatch));
FatFastIoDispatch.SizeOfFastIoDispatch = sizeof(FAST_IO_DISPATCH);
FatFastIoDispatch.FastIoCheckIfPossible = FatFastIoCheckIfPossible; // CheckForFastIo
FatFastIoDispatch.FastIoRead = FsRtlCopyRead; // Read
FatFastIoDispatch.FastIoWrite = FsRtlCopyWrite; // Write
FatFastIoDispatch.FastIoQueryBasicInfo = FatFastQueryBasicInfo; // QueryBasicInfo
FatFastIoDispatch.FastIoQueryStandardInfo = FatFastQueryStdInfo; // QueryStandardInfo
FatFastIoDispatch.FastIoLock = FatFastLock; // Lock
FatFastIoDispatch.FastIoUnlockSingle = FatFastUnlockSingle; // UnlockSingle
FatFastIoDispatch.FastIoUnlockAll = FatFastUnlockAll; // UnlockAll
FatFastIoDispatch.FastIoUnlockAllByKey = FatFastUnlockAllByKey; // UnlockAllByKey
FatFastIoDispatch.FastIoQueryNetworkOpenInfo = FatFastQueryNetworkOpenInfo;
FatFastIoDispatch.AcquireForCcFlush = FatAcquireForCcFlush;
FatFastIoDispatch.ReleaseForCcFlush = FatReleaseForCcFlush;
FatFastIoDispatch.MdlRead = FsRtlMdlReadDev;
FatFastIoDispatch.MdlReadComplete = FsRtlMdlReadCompleteDev;
FatFastIoDispatch.PrepareMdlWrite = FsRtlPrepareMdlWriteDev;
FatFastIoDispatch.MdlWriteComplete = FsRtlMdlWriteCompleteDev;
#if __NDAS_FAT_SECONDARY__
RtlZeroMemory(&FatFastIoDispatch, sizeof(FAST_IO_DISPATCH));
FatFastIoDispatch.SizeOfFastIoDispatch = sizeof(FAST_IO_DISPATCH);
//FatFastIoDispatch.FastIoCheckIfPossible = FatFastIoCheckIfPossible; // CheckForFastIo
//FatFastIoDispatch.AcquireForModWrite = FatAcquireFileForModWrite;
//FatFastIoDispatch.AcquireFileForNtCreateSection = FatAcquireForCreateSection;
//FatFastIoDispatch.ReleaseFileForNtCreateSection = FatReleaseForCreateSection;
FatFastIoDispatch.AcquireForCcFlush = FatAcquireForCcFlush;
FatFastIoDispatch.ReleaseForCcFlush = FatReleaseForCcFlush;
#endif
//
// Initialize the filter callbacks we use.
//
#if __NDAS_FAT__
if (IS_WINDOWSVISTA_OR_LATER()) {
#if __NDAS_FAT_WIN2K_SUPPORT__
if (NdasFatFsRtlRegisterFileSystemFilterCallbacks) {
RtlZeroMemory( &FilterCallbacks,
sizeof(FS_FILTER_CALLBACKS) );
FilterCallbacks.SizeOfFsFilterCallbacks = sizeof(FS_FILTER_CALLBACKS);
FilterCallbacks.PreAcquireForSectionSynchronization = FatFilterCallbackAcquireForCreateSection;
Status = NdasFatFsRtlRegisterFileSystemFilterCallbacks( DriverObject,
&FilterCallbacks );
if (!NT_SUCCESS( Status )) {
IoDeleteDevice( FatDiskFileSystemDeviceObject );
IoDeleteDevice( FatCdromFileSystemDeviceObject );
return Status;
}
}
#else
RtlZeroMemory( &FilterCallbacks,
sizeof(FS_FILTER_CALLBACKS) );
FilterCallbacks.SizeOfFsFilterCallbacks = sizeof(FS_FILTER_CALLBACKS);
FilterCallbacks.PreAcquireForSectionSynchronization = FatFilterCallbackAcquireForCreateSection;
Status = FsRtlRegisterFileSystemFilterCallbacks( DriverObject,
&FilterCallbacks );
if (!NT_SUCCESS( Status )) {
IoDeleteDevice( FatDiskFileSystemDeviceObject );
IoDeleteDevice( FatCdromFileSystemDeviceObject );
return Status;
}
#endif
}
#endif
//
// Initialize the global data structures
//
//
// The FatData record
//
RtlZeroMemory( &FatData, sizeof(FAT_DATA));
FatData.NodeTypeCode = FAT_NTC_DATA_HEADER;
FatData.NodeByteSize = sizeof(FAT_DATA);
InitializeListHead(&FatData.VcbQueue);
FatData.DriverObject = DriverObject;
FatData.DiskFileSystemDeviceObject = FatDiskFileSystemDeviceObject;
FatData.CdromFileSystemDeviceObject = FatCdromFileSystemDeviceObject;
//
// This list head keeps track of closes yet to be done.
//
InitializeListHead( &FatData.AsyncCloseList );
InitializeListHead( &FatData.DelayedCloseList );
FatData.FatCloseItem = IoAllocateWorkItem( FatDiskFileSystemDeviceObject);
if (FatData.FatCloseItem == NULL) {
IoDeleteDevice (FatDiskFileSystemDeviceObject);
#if __NDAS_FAT__
if (FatCdromFileSystemDeviceObject)
#endif
IoDeleteDevice (FatCdromFileSystemDeviceObject);
return STATUS_INSUFFICIENT_RESOURCES;
}
//
// Now initialize our general purpose spinlock (gag) and figure out how
// deep and wide we want our delayed lists (along with fooling ourselves
// about the lookaside depths).
//
KeInitializeSpinLock( &FatData.GeneralSpinLock );
switch ( MmQuerySystemSize() ) {
case MmSmallSystem:
MaxDepth = 4;
FatMaxDelayedCloseCount = FAT_MAX_DELAYED_CLOSES;
break;
case MmMediumSystem:
MaxDepth = 8;
FatMaxDelayedCloseCount = 4 * FAT_MAX_DELAYED_CLOSES;
break;
case MmLargeSystem:
MaxDepth = 16;
FatMaxDelayedCloseCount = 16 * FAT_MAX_DELAYED_CLOSES;
break;
}
//
// Initialize the cache manager callback routines
//
FatData.CacheManagerCallbacks.AcquireForLazyWrite = &FatAcquireFcbForLazyWrite;
FatData.CacheManagerCallbacks.ReleaseFromLazyWrite = &FatReleaseFcbFromLazyWrite;
FatData.CacheManagerCallbacks.AcquireForReadAhead = &FatAcquireFcbForReadAhead;
FatData.CacheManagerCallbacks.ReleaseFromReadAhead = &FatReleaseFcbFromReadAhead;
FatData.CacheManagerNoOpCallbacks.AcquireForLazyWrite = &FatNoOpAcquire;
FatData.CacheManagerNoOpCallbacks.ReleaseFromLazyWrite = &FatNoOpRelease;
FatData.CacheManagerNoOpCallbacks.AcquireForReadAhead = &FatNoOpAcquire;
FatData.CacheManagerNoOpCallbacks.ReleaseFromReadAhead = &FatNoOpRelease;
//
// Set up global pointer to our process.
//
FatData.OurProcess = PsGetCurrentProcess();
//
// Read the registry to determine if we are in ChicagoMode.
//
ValueName.Buffer = COMPATIBILITY_MODE_VALUE_NAME;
ValueName.Length = sizeof(COMPATIBILITY_MODE_VALUE_NAME) - sizeof(WCHAR);
ValueName.MaximumLength = sizeof(COMPATIBILITY_MODE_VALUE_NAME);
Status = FatGetCompatibilityModeValue( &ValueName, &Value );
if (NT_SUCCESS(Status) && FlagOn(Value, 1)) {
FatData.ChicagoMode = FALSE;
} else {
FatData.ChicagoMode = TRUE;
}
//
// Read the registry to determine if we are going to generate LFNs
// for valid 8.3 names with extended characters.
//
ValueName.Buffer = CODE_PAGE_INVARIANCE_VALUE_NAME;
ValueName.Length = sizeof(CODE_PAGE_INVARIANCE_VALUE_NAME) - sizeof(WCHAR);
ValueName.MaximumLength = sizeof(CODE_PAGE_INVARIANCE_VALUE_NAME);
Status = FatGetCompatibilityModeValue( &ValueName, &Value );
if (NT_SUCCESS(Status) && FlagOn(Value, 1)) {
FatData.CodePageInvariant = FALSE;
} else {
FatData.CodePageInvariant = TRUE;
}
//
// Initialize our global resource and fire up the lookaside lists.
//
ExInitializeResourceLite( &FatData.Resource );
ExInitializeNPagedLookasideList( &FatIrpContextLookasideList,
NULL,
NULL,
POOL_RAISE_IF_ALLOCATION_FAILURE,
sizeof(IRP_CONTEXT),
TAG_IRP_CONTEXT,
MaxDepth );
ExInitializeNPagedLookasideList( &FatNonPagedFcbLookasideList,
NULL,
NULL,
POOL_RAISE_IF_ALLOCATION_FAILURE,
sizeof(NON_PAGED_FCB),
TAG_FCB_NONPAGED,
MaxDepth );
ExInitializeNPagedLookasideList( &FatEResourceLookasideList,
NULL,
NULL,
POOL_RAISE_IF_ALLOCATION_FAILURE,
sizeof(ERESOURCE),
TAG_ERESOURCE,
MaxDepth );
ExInitializeSListHead( &FatCloseContextSList );
ExInitializeFastMutex( &FatCloseQueueMutex );
KeInitializeEvent( &FatReserveEvent, SynchronizationEvent, TRUE );
//
// Register the file system with the I/O system
//
IoRegisterFileSystem(FatDiskFileSystemDeviceObject);
ObReferenceObject (FatDiskFileSystemDeviceObject);
#if __NDAS_FAT__
if (FatCdromFileSystemDeviceObject) {
IoRegisterFileSystem(FatCdromFileSystemDeviceObject);
ObReferenceObject (FatCdromFileSystemDeviceObject);
}
#else
IoRegisterFileSystem(FatCdromFileSystemDeviceObject);
ObReferenceObject (FatCdromFileSystemDeviceObject);
#endif
#if __NDAS_FAT__
FatData.FileSystemRegistered = TRUE;
RtlInitEmptyUnicodeString( &FatData.Root,
FatData.RootBuffer,
sizeof(FatData.RootBuffer) );
RtlInitUnicodeString( &tempUnicode, L"\\" );
RtlCopyUnicodeString( &FatData.Root, &tempUnicode );
RtlInitEmptyUnicodeString( &FatData.MountMgrRemoteDatabase,
FatData.MountMgrRemoteDatabaseBuffer,
sizeof(FatData.MountMgrRemoteDatabaseBuffer) );
RtlInitUnicodeString( &tempUnicode, L"\\:$MountMgrRemoteDatabase" );
RtlCopyUnicodeString( &FatData.MountMgrRemoteDatabase, &tempUnicode );
RtlInitEmptyUnicodeString( &FatData.ExtendReparse,
FatData.ExtendReparseBuffer,
sizeof(FatData.ExtendReparseBuffer) );
RtlInitUnicodeString( &tempUnicode, L"\\$Extend\\$Reparse:$R:$INDEX_ALLOCATION" );
RtlCopyUnicodeString( &FatData.ExtendReparse, &tempUnicode );
RtlInitEmptyUnicodeString( &FatData.MountPointManagerRemoteDatabase,
FatData.MountPointManagerRemoteDatabaseBuffer,
sizeof(FatData.MountPointManagerRemoteDatabaseBuffer) );
RtlInitUnicodeString( &tempUnicode, L"\\System Volume Information\\MountPointManagerRemoteDatabase" );
RtlCopyUnicodeString( &FatData.MountPointManagerRemoteDatabase, &tempUnicode );
#endif
//
// Find out if we are running an a FujitsuFMR machine.
//
FatData.FujitsuFMR = FatIsFujitsuFMR();
#if __NDAS_FAT__
//
// Check to see if new kernel is present to decide if we want
// to support advance fcb headers
//
RtlInitUnicodeString( &UnicodeString, L"FsRtlTeardownPerStreamContexts" );
FatFsRtlTeardownPerStreamContexts = MmGetSystemRoutineAddress( &UnicodeString );
#endif
//
// And return to our caller
//
return( STATUS_SUCCESS );
}
NTSTATUS
DriverEntry(
IN PDRIVER_OBJECT DriverObject,
IN PUNICODE_STRING RegistryPath
)
/*++
Routine Description:
Installable driver initialization entry point.
This entry point is called directly by the I/O system.
Arguments:
DriverObject - pointer to the driver object
registryPath - pointer to a unicode string representing the path,
to driver-specific key in the registry.
Return Value:
STATUS_SUCCESS if successful,
STATUS_UNSUCCESSFUL otherwise
--*/
{
NTSTATUS status = STATUS_SUCCESS;
NTSTATUS cleanupStatus;
UNICODE_STRING unicodeDeviceName;
UNICODE_STRING unicodeDosDeviceName;
PDEVICE_OBJECT deviceObject;
PDEVICE_EXTENSION deviceExtension;
HANDLE threadHandle;
UNICODE_STRING sddlString;
ULONG devExtensionSize;
UNREFERENCED_PARAMETER (RegistryPath);
LSP_KDPRINT(("DriverEntry Enter \n"));
(void) RtlInitUnicodeString(&unicodeDeviceName, LSP_DEVICE_NAME_U);
(void) RtlInitUnicodeString( &sddlString, L"D:P(A;;GA;;;SY)(A;;GA;;;BA)");
//
// We will create a secure deviceobject so that only processes running
// in admin and local system account can access the device. Refer
// "Security Descriptor String Format" section in the platform
// SDK documentation to understand the format of the sddl string.
// We need to do because this is a legacy driver and there is no INF
// involved in installing the driver. For PNP drivers, security descriptor
// is typically specified for the FDO in the INF file.
//
/* includes LSP Session Buffer Size */
devExtensionSize = sizeof(DEVICE_EXTENSION) + LSP_SESSION_BUFFER_SIZE - 1;
status = IoCreateDevice(
DriverObject,
devExtensionSize,
&unicodeDeviceName,
FILE_DEVICE_UNKNOWN,
0,
FALSE,
&deviceObject);
//status = IoCreateDeviceSecure(
// DriverObject,
// devExtensionSize,
// &unicodeDeviceName,
// FILE_DEVICE_UNKNOWN,
// 0,
// (BOOLEAN) FALSE,
//&SDDL_DEVOBJ_SYS_ALL_ADM_RWX_WORLD_R_RES_R, /* &sddlString, */
// (LPCGUID)&GUID_DEVCLASS_LSP,
// &deviceObject);
if (!NT_SUCCESS(status))
{
return status;
}
DbgPrint("DeviceObject %p\n", deviceObject);
//
// Allocate and initialize a Unicode String containing the Win32 name
// for our device.
//
(void)RtlInitUnicodeString( &unicodeDosDeviceName, LSP_DOS_DEVICE_NAME_U );
IoDeleteSymbolicLink(&unicodeDosDeviceName);
status = IoCreateSymbolicLink(
(PUNICODE_STRING) &unicodeDosDeviceName,
(PUNICODE_STRING) &unicodeDeviceName
);
if (!NT_SUCCESS(status))
{
IoDeleteDevice(deviceObject);
return status;
}
deviceExtension = deviceObject->DeviceExtension;
RtlZeroMemory(deviceExtension, sizeof(deviceExtension));
KeInitializeSpinLock(&deviceExtension->LspLock);
#if 1
{
// 2.0
TDI_ADDRESS_LPX deviceAddress = {0x1027, 0x00, 0x0d, 0x0b, 0x5d, 0x80, 0x03};
// PALE
TDI_ADDRESS_LPX localAddress = {0x0000, 0x00, 0x03, 0xff, 0x5d, 0xac, 0xb8};
RtlCopyMemory(
&deviceExtension->DeviceAddress,
&deviceAddress,
sizeof(TDI_ADDRESS_LPX));
RtlCopyMemory(
&deviceExtension->LocalAddress,
&localAddress,
sizeof(TDI_ADDRESS_LPX));
}
#endif
deviceExtension->CloseWorkItem = IoAllocateWorkItem(deviceObject);
if (NULL == deviceExtension->CloseWorkItem)
{
IoDeleteDevice(deviceObject);
return STATUS_INSUFFICIENT_RESOURCES;
}
DriverObject->MajorFunction[IRP_MJ_CREATE]= LspDispatchCreate;
DriverObject->MajorFunction[IRP_MJ_CLOSE] = LspDispatchClose;
DriverObject->MajorFunction[IRP_MJ_READ] = LspDispatchRead;
DriverObject->MajorFunction[IRP_MJ_CLEANUP] = LspDispatchCleanup;
DriverObject->DriverStartIo = LspStartIo;
DriverObject->DriverUnload = LspUnload;
// deviceObject->Flags |= DO_BUFFERED_IO;
deviceObject->Flags |= DO_DIRECT_IO;
//
// This is used to serialize access to the queue.
//
KeInitializeSpinLock(&deviceExtension->QueueLock);
KeInitializeSemaphore(&deviceExtension->IrpQueueSemaphore, 0, MAXLONG );
//
// Initialize the pending Irp device queue
//
InitializeListHead( &deviceExtension->PendingIrpQueue );
KeInitializeEvent(
&deviceExtension->LspCompletionEvent,
NotificationEvent,
FALSE);
//
// Initialize the cancel safe queue
//
IoCsqInitialize(
&deviceExtension->CancelSafeQueue,
LspInsertIrp,
LspRemoveIrp,
LspPeekNextIrp,
LspAcquireLock,
LspReleaseLock,
LspCompleteCanceledIrp );
//
// 10 is multiplied because system time is specified in 100ns units
//
deviceExtension->PollingInterval.QuadPart = Int32x32To64(
LSP_RETRY_INTERVAL, -10);
//
// Note down system time
//
KeQuerySystemTime (&deviceExtension->LastPollTime);
//
// Start the polling thread.
//
deviceExtension->ThreadShouldStop = FALSE;
status = PsCreateSystemThread(&threadHandle,
(ACCESS_MASK)0,
NULL,
(HANDLE) 0,
NULL,
LspPollingThread,
deviceObject );
if( !NT_SUCCESS( status ))
{
IoDeleteSymbolicLink( &unicodeDosDeviceName );
IoDeleteDevice( deviceObject );
return status;
}
//
// Convert the Thread object handle into a pointer to the Thread object
// itself. Then close the handle.
//
ObReferenceObjectByHandle(
threadHandle,
THREAD_ALL_ACCESS,
NULL,
KernelMode,
&deviceExtension->ThreadObject,
NULL );
ZwClose(threadHandle);
//
// Finish initialization
//
deviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
LSP_KDPRINT(("DriverEntry Exit = %x\n", status));
return status;
}
NTSTATUS
QueueUnplugWorker(
PFDO_DEVICE_DATA FdoData,
ULONG SlotNo
) {
NTSTATUS status;
PNDBUS_UNPLUGWORKER workItemCtx;
Bus_KdPrint_Def(BUS_DBG_SS_TRACE, ("entered.\n"));
//
// Parameter check
//
if(!FdoData) {
Bus_KdPrint_Def(BUS_DBG_SS_ERROR, ("FdoData NULL!\n"));
return STATUS_INVALID_PARAMETER;
}
//
// Allocate worker's context
//
workItemCtx = (PNDBUS_UNPLUGWORKER)ExAllocatePoolWithTag(
NonPagedPool,
sizeof(NDBUS_UNPLUGWORKER),
NDBUS_POOLTAG_UNPLUGWORKITEM);
if(!workItemCtx) {
return STATUS_INSUFFICIENT_RESOURCES;
}
workItemCtx->FdoData = FdoData;
workItemCtx->SlotNo = SlotNo;
//
// Allocate IO work item for NDASBUS's Functional device object.
//
workItemCtx->IoWorkItem = IoAllocateWorkItem(FdoData->Self);
if(workItemCtx->IoWorkItem == NULL) {
status = STATUS_INSUFFICIENT_RESOURCES;
goto cleanup;
}
//
// Queue the work item.
//
IoQueueWorkItem(
workItemCtx->IoWorkItem,
UnplugWorker,
DelayedWorkQueue,
workItemCtx
);
return STATUS_SUCCESS;
cleanup:
if(workItemCtx) {
ExFreePool(workItemCtx);
}
return status;
}
NTSTATUS
HoldIoRequests(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
This routine is called on query or set power DOWN irp for the device.
This routine queues a workitem.
Arguments:
DeviceObject - pointer to device object
Irp - I/O request packet
Return Value:
NT status value
--*/
{
NTSTATUS ntStatus;
PIO_WORKITEM item;
PDEVICE_EXTENSION deviceExtension;
PWORKER_THREAD_CONTEXT context;
//
// initialize variables
//
deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
MobiUsb_DbgPrint(3, ("file mobipwr: HoldIoRequests - begins\n"));
deviceExtension->QueueState = HoldRequests;
context = ExAllocatePool(NonPagedPool, sizeof(WORKER_THREAD_CONTEXT));
if(context) {
item = IoAllocateWorkItem(DeviceObject);
context->Irp = Irp;
context->DeviceObject = DeviceObject;
context->WorkItem = item;
if(item) {
IoMarkIrpPending(Irp);
IoQueueWorkItem(item, HoldIoRequestsWorkerRoutine,
DelayedWorkQueue, context);
ntStatus = STATUS_PENDING;
}
else {
MobiUsb_DbgPrint(3, ("file mobipwr: Failed to allocate memory for workitem\n"));
ExFreePool(context);
ntStatus = STATUS_INSUFFICIENT_RESOURCES;
}
}
else {
MobiUsb_DbgPrint(1, ("file mobipwr: Failed to alloc memory for worker thread context\n"));
ntStatus = STATUS_INSUFFICIENT_RESOURCES;
}
MobiUsb_DbgPrint(3, ("file mobipwr: HoldIoRequests - ends\n"));
return ntStatus;
}
