mirror of
https://github.com/reactos/reactos.git
synced 2024-07-18 10:26:09 +00:00
- Start of heavy work on iofunc.c:
- Created our new friends: IopCleanupFailedIrp, IopAbortInterruptedIrp, IopPerformSynchronousRequest, IopLockFileObject, IopUnlockFileObject, IopQueueIrpToThread, IopUpdateOperationCount. - What does this mean: We actually queue IRPs to their thread! We actually respect I/O transfers being interrupted/alerted! We actually respect I/O operation counts! We actually LOCK FILE OBJECTS instead of randomly using them! We now support Deferred (read: MUCH faster) I/O completion. - First function blessed: IopDeviceFsIoControl. - Also simplified access rights check and fixedup some formatting. svn path=/trunk/; revision=22769
This commit is contained in:
parent
fbddf0d1ac
commit
13ef11ff23
|
@ -5,7 +5,6 @@
|
||||||
* PURPOSE: Internal header for the I/O Manager
|
* PURPOSE: Internal header for the I/O Manager
|
||||||
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
|
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
|
||||||
*/
|
*/
|
||||||
//#include "io_x.h"
|
|
||||||
#include "ntdddisk.h"
|
#include "ntdddisk.h"
|
||||||
|
|
||||||
//
|
//
|
||||||
|
@ -193,6 +192,16 @@ typedef enum _IOP_DEVICE_LIST_OPERATION
|
||||||
IopAdd
|
IopAdd
|
||||||
} IOP_DEVICE_LIST_OPERATION, *PIOP_DEVICE_LIST_OPERATION;
|
} IOP_DEVICE_LIST_OPERATION, *PIOP_DEVICE_LIST_OPERATION;
|
||||||
|
|
||||||
|
//
|
||||||
|
// Transfer statistics
|
||||||
|
//
|
||||||
|
typedef enum _IOP_TRANSFER_TYPE
|
||||||
|
{
|
||||||
|
IopReadTransfer,
|
||||||
|
IopWriteTransfer,
|
||||||
|
IopOtherTransfer
|
||||||
|
} IOP_TRANSFER_TYPE, *PIOP_TRANSFER_TYPE;
|
||||||
|
|
||||||
//
|
//
|
||||||
// Special version of the IRP Overlay used to optimize I/O completion
|
// Special version of the IRP Overlay used to optimize I/O completion
|
||||||
// by not using up a separate structure.
|
// by not using up a separate structure.
|
||||||
|
@ -673,6 +682,19 @@ IoInitCancelHandling(
|
||||||
VOID
|
VOID
|
||||||
);
|
);
|
||||||
|
|
||||||
|
//
|
||||||
|
// I/O Completion
|
||||||
|
//
|
||||||
|
VOID
|
||||||
|
NTAPI
|
||||||
|
IopCompleteRequest(
|
||||||
|
IN PKAPC Apc,
|
||||||
|
IN PKNORMAL_ROUTINE* NormalRoutine,
|
||||||
|
IN PVOID* NormalContext,
|
||||||
|
IN PVOID* SystemArgument1,
|
||||||
|
IN PVOID* SystemArgument2
|
||||||
|
);
|
||||||
|
|
||||||
//
|
//
|
||||||
// Error Logging Routines
|
// Error Logging Routines
|
||||||
//
|
//
|
||||||
|
@ -949,3 +971,8 @@ extern POBJECT_TYPE IoCompletionType;
|
||||||
extern PDEVICE_NODE IopRootDeviceNode;
|
extern PDEVICE_NODE IopRootDeviceNode;
|
||||||
extern ULONG IopTraceLevel;
|
extern ULONG IopTraceLevel;
|
||||||
extern NPAGED_LOOKASIDE_LIST IopMdlLookasideList;
|
extern NPAGED_LOOKASIDE_LIST IopMdlLookasideList;
|
||||||
|
|
||||||
|
//
|
||||||
|
// Inlined Functions
|
||||||
|
//
|
||||||
|
#include "io_x.h"
|
||||||
|
|
78
reactos/ntoskrnl/include/internal/io_x.h
Normal file
78
reactos/ntoskrnl/include/internal/io_x.h
Normal file
|
@ -0,0 +1,78 @@
|
||||||
|
/*
|
||||||
|
* PROJECT: ReactOS Kernel
|
||||||
|
* LICENSE: GPL - See COPYING in the top level directory
|
||||||
|
* FILE: ntoskrnl/include/io_x.h
|
||||||
|
* PURPOSE: Internal Inlined Functions for the I/O Manager
|
||||||
|
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
|
||||||
|
*/
|
||||||
|
|
||||||
|
VOID
|
||||||
|
static __inline
|
||||||
|
IopLockFileObject(IN PFILE_OBJECT FileObject)
|
||||||
|
{
|
||||||
|
/* Lock the FO and check for contention */
|
||||||
|
if (InterlockedExchange(&FileObject->Busy, TRUE))
|
||||||
|
{
|
||||||
|
/* FIXME: Implement contention case */
|
||||||
|
KEBUGCHECK(0);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
VOID
|
||||||
|
static __inline
|
||||||
|
IopUnlockFileObject(IN PFILE_OBJECT FileObject)
|
||||||
|
{
|
||||||
|
/* Unlock the FO and wake any waiters up */
|
||||||
|
InterlockedExchange(&FileObject->Busy, FALSE);
|
||||||
|
if (FileObject->Waiters) KeSetEvent(&FileObject->Lock, 0, FALSE);
|
||||||
|
}
|
||||||
|
|
||||||
|
VOID
|
||||||
|
static __inline
|
||||||
|
IopQueueIrpToThread(IN PIRP Irp)
|
||||||
|
{
|
||||||
|
KIRQL OldIrql;
|
||||||
|
|
||||||
|
/* Raise to APC Level */
|
||||||
|
KeRaiseIrql(APC_LEVEL, &OldIrql);
|
||||||
|
|
||||||
|
/* Insert it into the list */
|
||||||
|
InsertHeadList(&Irp->Tail.Overlay.Thread->IrpList, &Irp->ThreadListEntry);
|
||||||
|
|
||||||
|
/* Lower irql */
|
||||||
|
KeLowerIrql(OldIrql);
|
||||||
|
}
|
||||||
|
|
||||||
|
VOID
|
||||||
|
static __inline
|
||||||
|
IopUpdateOperationCount(IN IOP_TRANSFER_TYPE Type)
|
||||||
|
{
|
||||||
|
PLARGE_INTEGER CountToChange;
|
||||||
|
|
||||||
|
/* Make sure I/O operations are being counted */
|
||||||
|
if (IoCountOperations)
|
||||||
|
{
|
||||||
|
if (Type == IopReadTransfer)
|
||||||
|
{
|
||||||
|
/* Increase read count */
|
||||||
|
IoReadOperationCount++;
|
||||||
|
CountToChange = &PsGetCurrentProcess()->ReadOperationCount;
|
||||||
|
}
|
||||||
|
else if (Type == IopWriteTransfer)
|
||||||
|
{
|
||||||
|
/* Increase write count */
|
||||||
|
IoWriteOperationCount++;
|
||||||
|
CountToChange = &PsGetCurrentProcess()->ReadOperationCount;
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* Increase other count */
|
||||||
|
IoOtherOperationCount++;
|
||||||
|
CountToChange = &PsGetCurrentProcess()->ReadOperationCount;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Increase the process-wide count */
|
||||||
|
ExInterlockedAddLargeStatistic(CountToChange, 1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
|
@ -5,8 +5,6 @@
|
||||||
* PURPOSE: Internal header for the Object Manager
|
* PURPOSE: Internal header for the Object Manager
|
||||||
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
|
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
|
||||||
*/
|
*/
|
||||||
#include "ob_x.h"
|
|
||||||
|
|
||||||
//
|
//
|
||||||
// Define this if you want debugging support
|
// Define this if you want debugging support
|
||||||
//
|
//
|
||||||
|
@ -323,3 +321,9 @@ extern PHANDLE_TABLE ObpKernelHandleTable;
|
||||||
extern WORK_QUEUE_ITEM ObpReaperWorkItem;
|
extern WORK_QUEUE_ITEM ObpReaperWorkItem;
|
||||||
extern volatile PVOID ObpReaperList;
|
extern volatile PVOID ObpReaperList;
|
||||||
extern NPAGED_LOOKASIDE_LIST ObpNmLookasideList, ObpCiLookasideList;
|
extern NPAGED_LOOKASIDE_LIST ObpNmLookasideList, ObpCiLookasideList;
|
||||||
|
extern BOOLEAN IoCountOperations;
|
||||||
|
|
||||||
|
//
|
||||||
|
// Inlined Functions
|
||||||
|
//
|
||||||
|
#include "ob_x.h"
|
||||||
|
|
|
@ -23,14 +23,145 @@
|
||||||
|
|
||||||
/* PRIVATE FUNCTIONS *********************************************************/
|
/* PRIVATE FUNCTIONS *********************************************************/
|
||||||
|
|
||||||
|
/* DON'T inline this: it's a failure case */
|
||||||
NTSTATUS
|
NTSTATUS
|
||||||
NTAPI
|
NTAPI
|
||||||
IopQueryDirectoryFileCompletion(IN PDEVICE_OBJECT DeviceObject,
|
IopCleanupFailedIrp(IN PFILE_OBJECT FileObject,
|
||||||
IN PIRP Irp,
|
IN PKEVENT EventObject)
|
||||||
IN PVOID Context)
|
|
||||||
{
|
{
|
||||||
ExFreePool(Context);
|
PAGED_CODE();
|
||||||
return STATUS_SUCCESS;
|
|
||||||
|
/* Dereference the event */
|
||||||
|
if (EventObject) ObDereferenceObject(EventObject);
|
||||||
|
|
||||||
|
/* If this was a file opened for synch I/O, then unlock it */
|
||||||
|
if (FileObject->Flags & FO_SYNCHRONOUS_IO) IopUnlockFileObject(FileObject);
|
||||||
|
|
||||||
|
/* Now dereference it and return */
|
||||||
|
ObDereferenceObject(FileObject);
|
||||||
|
return STATUS_INSUFFICIENT_RESOURCES;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* DON'T inline this: it's a failure case */
|
||||||
|
VOID
|
||||||
|
NTAPI
|
||||||
|
IopAbortInterruptedIrp(IN PKEVENT EventObject,
|
||||||
|
IN PIRP Irp)
|
||||||
|
{
|
||||||
|
KIRQL OldIrql;
|
||||||
|
BOOLEAN CancelResult;
|
||||||
|
LARGE_INTEGER Wait;
|
||||||
|
PAGED_CODE();
|
||||||
|
|
||||||
|
/* Raise IRQL to APC */
|
||||||
|
KeRaiseIrql(APC_LEVEL, &OldIrql);
|
||||||
|
|
||||||
|
/* Check if nobody completed it yet */
|
||||||
|
if (!KeReadStateEvent(EventObject))
|
||||||
|
{
|
||||||
|
/* First, cancel it */
|
||||||
|
CancelResult = IoCancelIrp(Irp);
|
||||||
|
KeLowerIrql(OldIrql);
|
||||||
|
|
||||||
|
/* Check if we cancelled it */
|
||||||
|
if (CancelResult)
|
||||||
|
{
|
||||||
|
/* Wait for the IRP to be cancelled */
|
||||||
|
Wait.QuadPart = -100000;
|
||||||
|
while (!KeReadStateEvent(EventObject))
|
||||||
|
{
|
||||||
|
/* Delay indefintely */
|
||||||
|
KeDelayExecutionThread(KernelMode, FALSE, &Wait);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* No cancellation done, so wait for the I/O system to kill it */
|
||||||
|
KeWaitForSingleObject(EventObject,
|
||||||
|
Executive,
|
||||||
|
KernelMode,
|
||||||
|
FALSE,
|
||||||
|
NULL);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* We got preempted, so give up */
|
||||||
|
KeLowerIrql(OldIrql);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
NTSTATUS
|
||||||
|
NTAPI
|
||||||
|
IopPerformSynchronousRequest(IN PDEVICE_OBJECT DeviceObject,
|
||||||
|
IN PIRP Irp,
|
||||||
|
IN PFILE_OBJECT FileObject,
|
||||||
|
IN BOOLEAN Deferred,
|
||||||
|
IN KPROCESSOR_MODE PreviousMode,
|
||||||
|
IN BOOLEAN SynchIo,
|
||||||
|
IN IOP_TRANSFER_TYPE TransferType)
|
||||||
|
{
|
||||||
|
NTSTATUS Status;
|
||||||
|
PKNORMAL_ROUTINE NormalRoutine;
|
||||||
|
PVOID NormalContext;
|
||||||
|
KIRQL OldIrql;
|
||||||
|
PAGED_CODE();
|
||||||
|
|
||||||
|
/* Queue the IRP */
|
||||||
|
IopQueueIrpToThread(Irp);
|
||||||
|
|
||||||
|
/* Update operation counts */
|
||||||
|
IopUpdateOperationCount(TransferType);
|
||||||
|
|
||||||
|
/* Call the driver */
|
||||||
|
Status = IoCallDriver(DeviceObject, Irp);
|
||||||
|
|
||||||
|
/* Check if we're optimizing this case */
|
||||||
|
if (Deferred)
|
||||||
|
{
|
||||||
|
/* We are! Check if the IRP wasn't completed */
|
||||||
|
if (Status != STATUS_PENDING)
|
||||||
|
{
|
||||||
|
/* Complete it ourselves */
|
||||||
|
ASSERT(!Irp->PendingReturned);
|
||||||
|
KeRaiseIrql(APC_LEVEL, &OldIrql);
|
||||||
|
IopCompleteRequest(&Irp->Tail.Apc,
|
||||||
|
&NormalRoutine,
|
||||||
|
&NormalContext,
|
||||||
|
(PVOID*)&FileObject,
|
||||||
|
&NormalContext);
|
||||||
|
KeLowerIrql(OldIrql);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Check if this was synch I/O */
|
||||||
|
if (SynchIo)
|
||||||
|
{
|
||||||
|
/* Make sure the IRP was completed, but returned pending */
|
||||||
|
if (Status == STATUS_PENDING)
|
||||||
|
{
|
||||||
|
/* Wait for the IRP */
|
||||||
|
Status = KeWaitForSingleObject(&FileObject->Event,
|
||||||
|
Executive,
|
||||||
|
PreviousMode,
|
||||||
|
(FileObject->Flags & FO_ALERTABLE_IO),
|
||||||
|
NULL);
|
||||||
|
if ((Status == STATUS_ALERTED) || (Status == STATUS_USER_APC))
|
||||||
|
{
|
||||||
|
/* Abort the request */
|
||||||
|
IopAbortInterruptedIrp(&FileObject->Event, Irp);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Set the final status */
|
||||||
|
Status = FileObject->FinalStatus;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Release the file lock */
|
||||||
|
IopUnlockFileObject(FileObject);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Return status */
|
||||||
|
return Status;
|
||||||
}
|
}
|
||||||
|
|
||||||
NTSTATUS
|
NTSTATUS
|
||||||
|
@ -45,7 +176,7 @@ IopDeviceFsIoControl(IN HANDLE DeviceHandle,
|
||||||
IN ULONG InputBufferLength OPTIONAL,
|
IN ULONG InputBufferLength OPTIONAL,
|
||||||
OUT PVOID OutputBuffer,
|
OUT PVOID OutputBuffer,
|
||||||
IN ULONG OutputBufferLength OPTIONAL,
|
IN ULONG OutputBufferLength OPTIONAL,
|
||||||
BOOLEAN IsDevIoCtl)
|
IN BOOLEAN IsDevIoCtl)
|
||||||
{
|
{
|
||||||
NTSTATUS Status = STATUS_SUCCESS;
|
NTSTATUS Status = STATUS_SUCCESS;
|
||||||
PFILE_OBJECT FileObject;
|
PFILE_OBJECT FileObject;
|
||||||
|
@ -53,54 +184,65 @@ IopDeviceFsIoControl(IN HANDLE DeviceHandle,
|
||||||
PIRP Irp;
|
PIRP Irp;
|
||||||
PIO_STACK_LOCATION StackPtr;
|
PIO_STACK_LOCATION StackPtr;
|
||||||
PKEVENT EventObject = NULL;
|
PKEVENT EventObject = NULL;
|
||||||
BOOLEAN LocalEvent = FALSE;
|
BOOLEAN LockedForSynch = FALSE;
|
||||||
ULONG AccessType;
|
ULONG AccessType;
|
||||||
OBJECT_HANDLE_INFORMATION HandleInformation;
|
OBJECT_HANDLE_INFORMATION HandleInformation;
|
||||||
|
ACCESS_MASK DesiredAccess;
|
||||||
KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
|
KPROCESSOR_MODE PreviousMode = ExGetPreviousMode();
|
||||||
|
|
||||||
|
/* Get the access type */
|
||||||
AccessType = IO_METHOD_FROM_CTL_CODE(IoControlCode);
|
AccessType = IO_METHOD_FROM_CTL_CODE(IoControlCode);
|
||||||
|
|
||||||
|
/* Check if we came from user mode */
|
||||||
if (PreviousMode != KernelMode)
|
if (PreviousMode != KernelMode)
|
||||||
{
|
{
|
||||||
_SEH_TRY
|
_SEH_TRY
|
||||||
{
|
{
|
||||||
|
/* Probe the status block */
|
||||||
ProbeForWrite(IoStatusBlock,
|
ProbeForWrite(IoStatusBlock,
|
||||||
sizeof(IO_STATUS_BLOCK),
|
sizeof(IO_STATUS_BLOCK),
|
||||||
sizeof(ULONG));
|
sizeof(ULONG));
|
||||||
|
|
||||||
/* probe the input and output buffers if needed */
|
/* Check if this is buffered I/O */
|
||||||
if (AccessType == METHOD_BUFFERED)
|
if (AccessType == METHOD_BUFFERED)
|
||||||
{
|
{
|
||||||
if (OutputBuffer != NULL)
|
/* Check if we have an output buffer */
|
||||||
|
if (OutputBuffer)
|
||||||
{
|
{
|
||||||
|
/* Probe the output buffer */
|
||||||
ProbeForWrite(OutputBuffer, OutputBufferLength, 1);
|
ProbeForWrite(OutputBuffer, OutputBufferLength, 1);
|
||||||
}
|
}
|
||||||
else
|
else
|
||||||
{
|
{
|
||||||
/* make sure the caller can't fake this as we depend on this */
|
/* Make sure the caller can't fake this as we depend on this */
|
||||||
OutputBufferLength = 0;
|
OutputBufferLength = 0;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Check if we we have an input buffer I/O */
|
||||||
if (AccessType != METHOD_NEITHER)
|
if (AccessType != METHOD_NEITHER)
|
||||||
{
|
{
|
||||||
if (InputBuffer != NULL)
|
/* Check if we have an input buffer */
|
||||||
|
if (InputBuffer)
|
||||||
{
|
{
|
||||||
|
/* Probe the input buffer */
|
||||||
ProbeForRead(InputBuffer, InputBufferLength, 1);
|
ProbeForRead(InputBuffer, InputBufferLength, 1);
|
||||||
}
|
}
|
||||||
else
|
else
|
||||||
{
|
{
|
||||||
/* make sure the caller can't fake this as we depend on this */
|
/* Make sure the caller can't fake this as we depend on this */
|
||||||
InputBufferLength = 0;
|
InputBufferLength = 0;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
_SEH_HANDLE
|
_SEH_HANDLE
|
||||||
{
|
{
|
||||||
|
/* Get the exception code */
|
||||||
Status = _SEH_GetExceptionCode();
|
Status = _SEH_GetExceptionCode();
|
||||||
}
|
}
|
||||||
_SEH_END;
|
_SEH_END;
|
||||||
|
|
||||||
|
/* Fail if we got an access violation */
|
||||||
if (!NT_SUCCESS(Status)) return Status;
|
if (!NT_SUCCESS(Status)) return Status;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -113,15 +255,18 @@ IopDeviceFsIoControl(IN HANDLE DeviceHandle,
|
||||||
&HandleInformation);
|
&HandleInformation);
|
||||||
if (!NT_SUCCESS(Status)) return Status;
|
if (!NT_SUCCESS(Status)) return Status;
|
||||||
|
|
||||||
/* Check for sufficient access rights */
|
/* Check if we from user mode */
|
||||||
if (PreviousMode != KernelMode)
|
if (PreviousMode != KernelMode)
|
||||||
{
|
{
|
||||||
ACCESS_MASK DesiredAccess = (ACCESS_MASK)((IoControlCode >> 14) & 3);
|
/* Get the access mask */
|
||||||
if (DesiredAccess != FILE_ANY_ACCESS &&
|
DesiredAccess = (ACCESS_MASK)((IoControlCode >> 14) & 3);
|
||||||
!RtlAreAllAccessesGranted(HandleInformation.GrantedAccess,
|
|
||||||
(ACCESS_MASK)((IoControlCode >> 14) & 3)))
|
/* Check if we can open it */
|
||||||
|
if ((DesiredAccess != FILE_ANY_ACCESS) &&
|
||||||
|
(HandleInformation.GrantedAccess & DesiredAccess) != DesiredAccess)
|
||||||
{
|
{
|
||||||
ObDereferenceObject (FileObject);
|
/* Dereference the file object and fail */
|
||||||
|
ObDereferenceObject(FileObject);
|
||||||
return STATUS_ACCESS_DENIED;
|
return STATUS_ACCESS_DENIED;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
@ -138,7 +283,8 @@ IopDeviceFsIoControl(IN HANDLE DeviceHandle,
|
||||||
NULL);
|
NULL);
|
||||||
if (!NT_SUCCESS(Status))
|
if (!NT_SUCCESS(Status))
|
||||||
{
|
{
|
||||||
ObDereferenceObject (FileObject);
|
/* Dereference the file object and fail */
|
||||||
|
ObDereferenceObject(FileObject);
|
||||||
return Status;
|
return Status;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -146,27 +292,30 @@ IopDeviceFsIoControl(IN HANDLE DeviceHandle,
|
||||||
KeClearEvent(EventObject);
|
KeClearEvent(EventObject);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
/* Check if this is a file that was opened for Synch I/O */
|
||||||
|
if (FileObject->Flags & FO_SYNCHRONOUS_IO)
|
||||||
|
{
|
||||||
|
/* Lock it */
|
||||||
|
IopLockFileObject(FileObject);
|
||||||
|
|
||||||
|
/* Remember to unlock later */
|
||||||
|
LockedForSynch = TRUE;
|
||||||
|
}
|
||||||
|
|
||||||
/* Check if this is a direct open or not */
|
/* Check if this is a direct open or not */
|
||||||
if (FileObject->Flags & FO_DIRECT_DEVICE_OPEN)
|
if (FileObject->Flags & FO_DIRECT_DEVICE_OPEN)
|
||||||
{
|
{
|
||||||
|
/* It's a direct open, get the attached device */
|
||||||
DeviceObject = IoGetAttachedDevice(FileObject->DeviceObject);
|
DeviceObject = IoGetAttachedDevice(FileObject->DeviceObject);
|
||||||
}
|
}
|
||||||
else
|
else
|
||||||
{
|
{
|
||||||
|
/* Otherwise get the related device */
|
||||||
DeviceObject = IoGetRelatedDeviceObject(FileObject);
|
DeviceObject = IoGetRelatedDeviceObject(FileObject);
|
||||||
}
|
}
|
||||||
|
|
||||||
/* Check if we should use Sync IO or not */
|
/* Clear the event */
|
||||||
if (FileObject->Flags & FO_SYNCHRONOUS_IO)
|
KeClearEvent(&FileObject->Event);
|
||||||
{
|
|
||||||
/* Use File Object event */
|
|
||||||
KeClearEvent(&FileObject->Event);
|
|
||||||
}
|
|
||||||
else
|
|
||||||
{
|
|
||||||
/* Use local event */
|
|
||||||
LocalEvent = TRUE;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Build the IRP */
|
/* Build the IRP */
|
||||||
Irp = IoBuildDeviceIoControlRequest(IoControlCode,
|
Irp = IoBuildDeviceIoControlRequest(IoControlCode,
|
||||||
|
@ -178,14 +327,10 @@ IopDeviceFsIoControl(IN HANDLE DeviceHandle,
|
||||||
FALSE,
|
FALSE,
|
||||||
EventObject,
|
EventObject,
|
||||||
IoStatusBlock);
|
IoStatusBlock);
|
||||||
if (!Irp)
|
if (!Irp) return IopCleanupFailedIrp(FileObject, Event);
|
||||||
{
|
|
||||||
if (EventObject) ObDereferenceObject(EventObject);
|
|
||||||
ObDereferenceObject(FileObject);
|
|
||||||
return STATUS_INSUFFICIENT_RESOURCES;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Set some extra settings */
|
/* Set some extra settings */
|
||||||
|
Irp->Tail.Overlay.AuxiliaryBuffer = (PVOID) NULL;
|
||||||
Irp->Tail.Overlay.OriginalFileObject = FileObject;
|
Irp->Tail.Overlay.OriginalFileObject = FileObject;
|
||||||
Irp->RequestorMode = PreviousMode;
|
Irp->RequestorMode = PreviousMode;
|
||||||
Irp->Overlay.AsynchronousParameters.UserApcRoutine = UserApcRoutine;
|
Irp->Overlay.AsynchronousParameters.UserApcRoutine = UserApcRoutine;
|
||||||
|
@ -196,23 +341,27 @@ IopDeviceFsIoControl(IN HANDLE DeviceHandle,
|
||||||
IRP_MJ_DEVICE_CONTROL :
|
IRP_MJ_DEVICE_CONTROL :
|
||||||
IRP_MJ_FILE_SYSTEM_CONTROL;
|
IRP_MJ_FILE_SYSTEM_CONTROL;
|
||||||
|
|
||||||
/* Call the Driver */
|
/* Use deferred completion for FS I/O */
|
||||||
Status = IoCallDriver(DeviceObject, Irp);
|
Irp->Flags |= (!IsDevIoCtl) ? IRP_DEFER_IO_COMPLETION : 0;
|
||||||
if (Status == STATUS_PENDING)
|
|
||||||
{
|
|
||||||
if (!LocalEvent)
|
|
||||||
{
|
|
||||||
KeWaitForSingleObject(&FileObject->Event,
|
|
||||||
Executive,
|
|
||||||
PreviousMode,
|
|
||||||
FileObject->Flags & FO_ALERTABLE_IO,
|
|
||||||
NULL);
|
|
||||||
Status = FileObject->FinalStatus;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Return the Status */
|
/* Perform the call */
|
||||||
return Status;
|
return IopPerformSynchronousRequest(DeviceObject,
|
||||||
|
Irp,
|
||||||
|
FileObject,
|
||||||
|
!IsDevIoCtl,
|
||||||
|
PreviousMode,
|
||||||
|
LockedForSynch,
|
||||||
|
IopOtherTransfer);
|
||||||
|
}
|
||||||
|
|
||||||
|
NTSTATUS
|
||||||
|
NTAPI
|
||||||
|
IopQueryDirectoryFileCompletion(IN PDEVICE_OBJECT DeviceObject,
|
||||||
|
IN PIRP Irp,
|
||||||
|
IN PVOID Context)
|
||||||
|
{
|
||||||
|
ExFreePool(Context);
|
||||||
|
return STATUS_SUCCESS;
|
||||||
}
|
}
|
||||||
|
|
||||||
/* PUBLIC FUNCTIONS **********************************************************/
|
/* PUBLIC FUNCTIONS **********************************************************/
|
||||||
|
|
|
@ -20,6 +20,7 @@ ULONG IopTraceLevel = IO_IRP_DEBUG;
|
||||||
POBJECT_TYPE IoDeviceObjectType = NULL;
|
POBJECT_TYPE IoDeviceObjectType = NULL;
|
||||||
POBJECT_TYPE IoFileObjectType = NULL;
|
POBJECT_TYPE IoFileObjectType = NULL;
|
||||||
extern POBJECT_TYPE IoControllerObjectType;
|
extern POBJECT_TYPE IoControllerObjectType;
|
||||||
|
BOOLEAN IoCountOperations;
|
||||||
ULONG IoReadOperationCount = 0;
|
ULONG IoReadOperationCount = 0;
|
||||||
LARGE_INTEGER IoReadTransferCount = {{0, 0}};
|
LARGE_INTEGER IoReadTransferCount = {{0, 0}};
|
||||||
ULONG IoWriteOperationCount = 0;
|
ULONG IoWriteOperationCount = 0;
|
||||||
|
|
|
@ -849,13 +849,13 @@ IoCancelIrp(IN PIRP Irp)
|
||||||
{
|
{
|
||||||
KIRQL OldIrql;
|
KIRQL OldIrql;
|
||||||
PDRIVER_CANCEL CancelRoutine;
|
PDRIVER_CANCEL CancelRoutine;
|
||||||
|
|
||||||
/* Acquire the cancel lock and cancel the IRP */
|
|
||||||
IOTRACE(IO_IRP_DEBUG,
|
IOTRACE(IO_IRP_DEBUG,
|
||||||
"%s - Canceling IRP %p\n",
|
"%s - Canceling IRP %p\n",
|
||||||
__FUNCTION__,
|
__FUNCTION__,
|
||||||
Irp);
|
Irp);
|
||||||
|
ASSERT(Irp->Type == IO_TYPE_IRP);
|
||||||
|
|
||||||
|
/* Acquire the cancel lock and cancel the IRP */
|
||||||
IoAcquireCancelSpinLock(&OldIrql);
|
IoAcquireCancelSpinLock(&OldIrql);
|
||||||
Irp->Cancel = TRUE;
|
Irp->Cancel = TRUE;
|
||||||
|
|
||||||
|
@ -892,10 +892,11 @@ VOID
|
||||||
NTAPI
|
NTAPI
|
||||||
IoCancelThreadIo(IN PETHREAD Thread)
|
IoCancelThreadIo(IN PETHREAD Thread)
|
||||||
{
|
{
|
||||||
PIRP Irp;
|
|
||||||
KIRQL OldIrql;
|
KIRQL OldIrql;
|
||||||
ULONG Retries = 3000;
|
ULONG Retries = 3000;
|
||||||
LARGE_INTEGER Interval;
|
LARGE_INTEGER Interval;
|
||||||
|
//PLIST_ENTRY ListHead, NextEntry;
|
||||||
|
//PIRP Irp;
|
||||||
IOTRACE(IO_IRP_DEBUG,
|
IOTRACE(IO_IRP_DEBUG,
|
||||||
"%s - Canceling IRPs for Thread %p\n",
|
"%s - Canceling IRPs for Thread %p\n",
|
||||||
__FUNCTION__,
|
__FUNCTION__,
|
||||||
|
@ -905,11 +906,21 @@ IoCancelThreadIo(IN PETHREAD Thread)
|
||||||
OldIrql = KfRaiseIrql(APC_LEVEL);
|
OldIrql = KfRaiseIrql(APC_LEVEL);
|
||||||
|
|
||||||
/* Start by cancelling all the IRPs in the current thread queue. */
|
/* Start by cancelling all the IRPs in the current thread queue. */
|
||||||
LIST_FOR_EACH(Irp, &Thread->IrpList, IRP, ThreadListEntry)
|
#if 0
|
||||||
|
ListHead = &Thread->IrpList;
|
||||||
|
NextEntry = ListHead->Flink;
|
||||||
|
while (ListHead != NextEntry)
|
||||||
{
|
{
|
||||||
|
/* Get the IRP */
|
||||||
|
Irp = CONTAINING_RECORD(NextEntry, IRP, ThreadListEntry);
|
||||||
|
|
||||||
/* Cancel it */
|
/* Cancel it */
|
||||||
IoCancelIrp(Irp);
|
IoCancelIrp(Irp);
|
||||||
|
|
||||||
|
/* Move to the next entry */
|
||||||
|
NextEntry = NextEntry->Flink;
|
||||||
}
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
/* Wait 100 milliseconds */
|
/* Wait 100 milliseconds */
|
||||||
Interval.QuadPart = -1000000;
|
Interval.QuadPart = -1000000;
|
||||||
|
@ -1462,24 +1473,13 @@ VOID
|
||||||
NTAPI
|
NTAPI
|
||||||
IoQueueThreadIrp(IN PIRP Irp)
|
IoQueueThreadIrp(IN PIRP Irp)
|
||||||
{
|
{
|
||||||
KIRQL OldIrql;
|
|
||||||
IOTRACE(IO_IRP_DEBUG,
|
IOTRACE(IO_IRP_DEBUG,
|
||||||
"%s - Queueing IRP %p\n",
|
"%s - Queueing IRP %p\n",
|
||||||
__FUNCTION__,
|
__FUNCTION__,
|
||||||
Irp);
|
Irp);
|
||||||
|
|
||||||
/* Raise to APC */
|
/* Use our inlined routine */
|
||||||
OldIrql = KfRaiseIrql(APC_LEVEL);
|
IopQueueIrpToThread(Irp);
|
||||||
|
|
||||||
/*
|
|
||||||
* Synchronous irp's are queued to requestor thread. If they are not
|
|
||||||
* completed when the thread exits, they are canceled (cleaned up).
|
|
||||||
* - Gunnar
|
|
||||||
*/
|
|
||||||
InsertTailList(&Irp->Tail.Overlay.Thread->IrpList, &Irp->ThreadListEntry);
|
|
||||||
|
|
||||||
/* Lower back */
|
|
||||||
KfLowerIrql(OldIrql);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/*
|
/*
|
||||||
|
|
Loading…
Reference in a new issue