IoCsqInitialize - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// wdm.h

NTSTATUS IoCsqInitialize(
  [out] PIO_CSQ                       Csq,
  [in]  PIO_CSQ_INSERT_IRP            CsqInsertIrp,
  [in]  PIO_CSQ_REMOVE_IRP            CsqRemoveIrp,
  [in]  PIO_CSQ_PEEK_NEXT_IRP         CsqPeekNextIrp,
  [in]  PIO_CSQ_ACQUIRE_LOCK          CsqAcquireLock,
  [in]  PIO_CSQ_RELEASE_LOCK          CsqReleaseLock,
  [in]  PIO_CSQ_COMPLETE_CANCELED_IRP CsqCompleteCanceledIrp
);
View the official Windows Driver Kit DDI reference

NtDoc

No description available.

Edit description on GitHub

Windows Driver Kit DDI reference (nf-wdm-iocsqinitialize)

IoCsqInitialize function

Description

The IoCsqInitialize routine initializes the driver's cancel-safe IRP queue dispatch table.

Parameters

Csq [out]

Pointer to the IO_CSQ structure to be initialized by IoCsqInitialize.

CsqInsertIrp [in]

Pointer to the driver-defined CsqInsertIrp function for the driver's cancel-safe IRP queue.

CsqRemoveIrp [in]

Pointer to the driver-defined CsqRemoveIrp function for the driver's cancel-safe IRP queue.

CsqPeekNextIrp [in]

Pointer to the driver-defined CsqPeekNextIrp function for the driver's cancel-safe IRP queue.

CsqAcquireLock [in]

Pointer to the driver-defined CsqAcquireLock function for the driver's cancel-safe IRP queue.

CsqReleaseLock [in]

Pointer to the driver-defined CsqReleaseLock function for the driver's cancel-safe IRP queue.

CsqCompleteCanceledIrp [in]

Pointer to the driver-defined CsqCompleteCanceledIrp function for the driver's cancel-safe IRP queue.

Return value

This routine returns STATUS_SUCCESS on success, or the appropriate NTSTATUS error code on failure.

Remarks

The IoCsqInitialize routine initializes an IO_CSQ structure that describes a driver's cancel-safe IRP queue. Drivers can also use IoCsqInitializeEx to create an IRP queue with extended capabilities. For more information, see Cancel-Safe IRP Queues.

Note that IoCsq*Xxx* routines use the DriverContext[3] member of the IRP to hold IRP context information. Drivers that use these routines to queue IRPs must leave that member unused.

See also

CsqAcquireLock

CsqCompleteCanceledIrp

CsqInsertIrp

CsqInsertIrpEx

CsqPeekNextIrp

CsqReleaseLock

CsqRemoveIrp

IO_CSQ

IoCsqInitializeEx

IoCsqInsertIrp

IoCsqInsertIrpEx

IoCsqRemoveIrp

IoCsqRemoveNextIrp

View the official Windows Driver Kit DDI reference

Edit description on GitHub