NTSTATUS
IopIrpCreate(
OUT PIRP* ppIrp,
IN IRP_TYPE Type,
IN PIO_FILE_OBJECT pFileObject
)
{
NTSTATUS status = 0;
int EE = 0;
PIRP pIrp = NULL;
status = IopIrpCreateDetached(&pIrp);
GOTO_CLEANUP_ON_STATUS_EE(status, EE);
status = IopIrpAttach(pIrp, Type, pFileObject);
GOTO_CLEANUP_ON_STATUS_EE(status, EE);
cleanup:
if (status)
{
IopIrpDereference(&pIrp);
}
*ppIrp = pIrp;
IO_LOG_LEAVE_ON_STATUS_EE(status, EE);
return status;
}
static
NTSTATUS
IopContinueAsyncCloseFile(
IN PIO_FILE_OBJECT FileHandle,
IN OPTIONAL PIO_ASYNC_COMPLETE_CALLBACK Callback,
IN OPTIONAL PVOID CallbackContext,
OUT PIO_STATUS_BLOCK IoStatusBlock
)
{
NTSTATUS status = STATUS_SUCCESS;
int EE = 0;
PIRP pIrp = NULL;
IO_ASYNC_CONTROL_BLOCK asyncControlBlock = { 0 };
PIO_ASYNC_CONTROL_BLOCK useAsyncControlBlock = NULL;
BOOLEAN isOpen = FALSE;
//
// If the create never completed successfully, we do not want
// to send a CLOSE IRP.
//
// TODO -- There is probably still a small race window
// wrt create and device rundown. The fix may involve
// changing when IopFileObjectRemoveDispatched() is called
// from IopIrpCompleteInternal() so that it is called
// after the switch on the IRP type.
IopFileObjectLock(FileHandle);
isOpen = IsSetFlag(FileHandle->Flags, FILE_OBJECT_FLAG_CREATE_DONE);
IopFileObjectUnlock(FileHandle);
if (!isOpen)
{
status = STATUS_SUCCESS;
GOTO_CLEANUP_EE(EE);
}
//
// The file was actually opened, so do rest of close cleanup.
//
status = IopFileObjectGetCloseIrp(FileHandle, &pIrp);
GOTO_CLEANUP_ON_STATUS_EE(status, EE);
status = IopIrpAttach(pIrp, IRP_TYPE_CLOSE, FileHandle);
GOTO_CLEANUP_ON_STATUS_EE(status, EE);
if (Callback)
{
asyncControlBlock.Callback = Callback;
asyncControlBlock.CallbackContext = CallbackContext;
useAsyncControlBlock = &asyncControlBlock;
}
status = IopIrpDispatch(
pIrp,
useAsyncControlBlock,
IoStatusBlock);
if (STATUS_PENDING == status)
{
IoDereferenceAsyncCancelContext(&asyncControlBlock.AsyncCancelContext);
}
GOTO_CLEANUP_ON_STATUS_EE(status, EE);
cleanup:
IopIrpDereference(&pIrp);
if (!useAsyncControlBlock && IoStatusBlock && (STATUS_PENDING != status))
{
IO_STATUS_BLOCK ioStatusBlock = { 0 };
ioStatusBlock.Status = status;
*IoStatusBlock = ioStatusBlock;
}
IO_LOG_LEAVE_ON_STATUS_EE(status, EE);
return status;
}