NTSTATUS BulkUsb_DispatchClose(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
{
NTSTATUS ntStatus;
PFILE_OBJECT fileObject;
PTDeviceExtension deviceExtension;
PIO_STACK_LOCATION irpStack;
PTPipeContext pipeContext;
PUSBD_PIPE_INFORMATION pipeInformation;
PAGED_CODE();
irpStack = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpStack->FileObject;
pipeContext = NULL;
pipeInformation = NULL;
deviceExtension = (PTDeviceExtension) DeviceObject->DeviceExtension;
BulkUsb_DbgPrint(3, ("file bulkdev: BulkUsb_DispatchClose - begins\n"));
if(fileObject && fileObject->FsContext)
{
pipeInformation = fileObject->FsContext;
if(0 != fileObject->FileName.Length)
{
pipeContext = BulkUsb_PipeWithName(DeviceObject, &fileObject->FileName);
}
if(pipeContext && pipeContext->PipeOpen)
pipeContext->PipeOpen = FALSE;
}
ntStatus = STATUS_SUCCESS;
Irp->IoStatus.Status = ntStatus;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
InterlockedDecrement(&deviceExtension->OpenHandleCount);
BulkUsb_DbgPrint(3, ("file bulkdev: BulkUsb_DispatchClose - ends\n"));
return ntStatus;
}
NTSTATUS
BulkUsb_DispatchCreate(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
Dispatch routine for create.
Arguments:
DeviceObject - pointer to device object
Irp - I/O request packet.
Return Value:
NT status value
--*/
{
ULONG i;
NTSTATUS ntStatus;
PFILE_OBJECT fileObject;
PDEVICE_EXTENSION deviceExtension;
PIO_STACK_LOCATION irpStack;
PBULKUSB_PIPE_CONTEXT pipeContext;
PUSBD_INTERFACE_INFORMATION interface;
PAGED_CODE();
BulkUsb_DbgPrint(3, ("BulkUsb_DispatchCreate - begins\n"));
//
// initialize variables
//
irpStack = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpStack->FileObject;
deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
if(deviceExtension->DeviceState != Working) {
ntStatus = STATUS_INVALID_DEVICE_STATE;
goto BulkUsb_DispatchCreate_Exit;
}
if(deviceExtension->UsbInterface) {
interface = deviceExtension->UsbInterface;
}
else {
BulkUsb_DbgPrint(1, ("UsbInterface not found\n"));
ntStatus = STATUS_INVALID_DEVICE_STATE;
goto BulkUsb_DispatchCreate_Exit;
}
//
// FsContext is Null for the device
//
if(fileObject) {
fileObject->FsContext = NULL;
}
else {
ntStatus = STATUS_INVALID_PARAMETER;
goto BulkUsb_DispatchCreate_Exit;
}
if(0 == fileObject->FileName.Length) {
//
// opening a device as opposed to pipe.
//
ntStatus = STATUS_SUCCESS;
InterlockedIncrement(&deviceExtension->OpenHandleCount);
//
// the device is idle if it has no open handles or pending PnP Irps
// since we just received an open handle request, cancel idle req.
//
if(deviceExtension->SSEnable) {
CancelSelectSuspend(deviceExtension);
}
goto BulkUsb_DispatchCreate_Exit;
}
pipeContext = BulkUsb_PipeWithName(DeviceObject, &fileObject->FileName);
if(pipeContext == NULL) {
ntStatus = STATUS_INVALID_PARAMETER;
goto BulkUsb_DispatchCreate_Exit;
}
ntStatus = STATUS_INVALID_PARAMETER;
for(i=0; i<interface->NumberOfPipes; i++) {
if(pipeContext == &deviceExtension->PipeContext[i]) {
//
// found a match
//
BulkUsb_DbgPrint(3, ("open pipe %d\n", i));
fileObject->FsContext = &interface->Pipes[i];
ASSERT(fileObject->FsContext);
pipeContext->PipeOpen = TRUE;
ntStatus = STATUS_SUCCESS;
//
// increment OpenHandleCounts
//
InterlockedIncrement(&deviceExtension->OpenHandleCount);
//
// the device is idle if it has no open handles or pending PnP Irps
// since we just received an open handle request, cancel idle req.
//
if(deviceExtension->SSEnable) {
CancelSelectSuspend(deviceExtension);
}
}
}
BulkUsb_DispatchCreate_Exit:
Irp->IoStatus.Status = ntStatus;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
BulkUsb_DbgPrint(3, ("BulkUsb_DispatchCreate - ends\n"));
return ntStatus;
}
NTSTATUS BulkUsb_DispatchCreate(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
{
ULONG i;
NTSTATUS ntStatus;
PFILE_OBJECT fileObject;
PTDeviceExtension deviceExtension;
PIO_STACK_LOCATION irpStack;
PTPipeContext pipeContext;
PUSBD_INTERFACE_INFORMATION Interface;
PAGED_CODE();
BulkUsb_DbgPrint(3, ("file bulkdev: BulkUsb_DispatchCreate - begins\n"));
irpStack = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpStack->FileObject;
deviceExtension = (PTDeviceExtension) DeviceObject->DeviceExtension;
if(deviceExtension->DeviceState != WORKING)
{
ntStatus = STATUS_INVALID_DEVICE_STATE;
goto BulkUsb_DispatchCreate_Exit;
}
if(deviceExtension->UsbInterface)
Interface = deviceExtension->UsbInterface;
else
{
BulkUsb_DbgPrint(1, ("file bulkdev: UsbInterface not found\n"));
ntStatus = STATUS_INVALID_DEVICE_STATE;
goto BulkUsb_DispatchCreate_Exit;
}
if(fileObject)
fileObject->FsContext = NULL;
else
{
ntStatus = STATUS_INVALID_PARAMETER;
goto BulkUsb_DispatchCreate_Exit;
}
if(0 == fileObject->FileName.Length)
{
ntStatus = STATUS_SUCCESS;
InterlockedIncrement(&deviceExtension->OpenHandleCount);
if(deviceExtension->SSEnable)
{
CancelSelectSuspend(deviceExtension);
}
goto BulkUsb_DispatchCreate_Exit;
}
pipeContext = BulkUsb_PipeWithName(DeviceObject, &fileObject->FileName);
if(pipeContext == NULL)
{
ntStatus = STATUS_INVALID_PARAMETER;
goto BulkUsb_DispatchCreate_Exit;
}
ntStatus = STATUS_INVALID_PARAMETER;
for(i = 0; i < Interface->NumberOfPipes; i++)
{
if(pipeContext == &deviceExtension->PipeContext[i])
{
BulkUsb_DbgPrint(3, ("file bulkdev: open pipe %d\n", i));
fileObject->FsContext = &Interface->Pipes[i];
ASSERT(fileObject->FsContext);
pipeContext->PipeOpen = TRUE;
ntStatus = STATUS_SUCCESS;
InterlockedIncrement(&deviceExtension->OpenHandleCount);
if(deviceExtension->SSEnable)
{
CancelSelectSuspend(deviceExtension);
}
}
}
BulkUsb_DispatchCreate_Exit:
Irp->IoStatus.Status = ntStatus;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
BulkUsb_DbgPrint(3, ("file bulkdev: BulkUsb_DispatchCreate - ends\n"));
return ntStatus;
}
NTSTATUS
BulkUsb_DispatchClose(
IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp
)
/*++
Routine Description:
Dispatch routine for close.
Arguments:
DeviceObject - pointer to device object
Irp - I/O request packet
Return Value:
NT status value
--*/
{
NTSTATUS ntStatus;
PFILE_OBJECT fileObject;
PDEVICE_EXTENSION deviceExtension;
PIO_STACK_LOCATION irpStack;
PBULKUSB_PIPE_CONTEXT pipeContext;
PUSBD_PIPE_INFORMATION pipeInformation;
PAGED_CODE();
//
// initialize variables
//
irpStack = IoGetCurrentIrpStackLocation(Irp);
fileObject = irpStack->FileObject;
pipeContext = NULL;
pipeInformation = NULL;
deviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
BulkUsb_DbgPrint(3, ("BulkUsb_DispatchClose - begins\n"));
if(fileObject && fileObject->FsContext) {
pipeInformation = fileObject->FsContext;
if(0 != fileObject->FileName.Length) {
pipeContext = BulkUsb_PipeWithName(DeviceObject,
&fileObject->FileName);
}
if(pipeContext && pipeContext->PipeOpen) {
pipeContext->PipeOpen = FALSE;
}
}
//
// set ntStatus to STATUS_SUCCESS
//
ntStatus = STATUS_SUCCESS;
Irp->IoStatus.Status = ntStatus;
Irp->IoStatus.Information = 0;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
InterlockedDecrement(&deviceExtension->OpenHandleCount);
BulkUsb_DbgPrint(3, ("BulkUsb_DispatchClose - ends\n"));
return ntStatus;
}
