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[RAMDISK]

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Implement RamdiskScsi, RamdiskSystemControl, RamdiskPower

svn path=/trunk/; revision=56016
This commit is contained in:
Pierre Schweitzer 2012-03-04 21:42:16 +00:00
parent 4350714766
commit 8fdf9b6765
1 changed files with 152 additions and 10 deletions
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162
reactos/drivers/storage/class/ramdisk/ramdisk.c
View file

@ -2191,9 +2191,87 @@ NTAPI
RamdiskPower(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
UNIMPLEMENTED;
while (TRUE);
return STATUS_SUCCESS;
NTSTATUS Status;
PIO_STACK_LOCATION IoStackLocation;
PRAMDISK_BUS_EXTENSION DeviceExtension;
DeviceExtension = DeviceObject->DeviceExtension;
//
// If we have a device extension, take extra caution
// with the lower driver
//
if (DeviceExtension != NULL)
{
PoStartNextPowerIrp(Irp);
//
// Device has not been removed yet, so
// pass to the attached/lower driver
//
if (DeviceExtension->State < RamdiskStateBusRemoved)
{
IoSkipCurrentIrpStackLocation(Irp);
return PoCallDriver(DeviceExtension->AttachedDevice, Irp);
}
//
// Otherwise, simply complete the IRP
// Notifying that deletion is pending
//
else
{
Irp->IoStatus.Status = STATUS_DELETE_PENDING;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_DELETE_PENDING;
}
}
//
// Get stack and deal with minor functions
//
IoStackLocation = IoGetCurrentIrpStackLocation(Irp);
switch (IoStackLocation->MinorFunction)
{
case IRP_MN_SET_POWER:
//
// If setting device power state
// it's all fine and return success
//
if (DevicePowerState)
{
Irp->IoStatus.Status = STATUS_SUCCESS;
}
//
// Get appropriate status for return
//
Status = Irp->IoStatus.Status;
PoStartNextPowerIrp(Irp);
IoCompleteRequest(Irp, IO_NO_INCREMENT);
break;
case IRP_MN_QUERY_POWER:
//
// We can obviously accept all states
// So just return success
//
Status =
Irp->IoStatus.Status = STATUS_SUCCESS;
PoStartNextPowerIrp(Irp);
IoCompleteRequest(Irp, IO_NO_INCREMENT);
break;
default:
//
// Just complete and save status for return
//
Status = Irp->IoStatus.Status;
PoStartNextPowerIrp(Irp);
IoCompleteRequest(Irp, IO_NO_INCREMENT);
break;
}
return Status;
}
NTSTATUS
@ -2201,9 +2279,31 @@ NTAPI
RamdiskSystemControl(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
UNIMPLEMENTED;
while (TRUE);
return STATUS_SUCCESS;
NTSTATUS Status;
PRAMDISK_BUS_EXTENSION DeviceExtension;
DeviceExtension = DeviceObject->DeviceExtension;
//
// If we have a device extension, forward the IRP
// to the attached device
//
if (DeviceExtension != NULL)
{
IoSkipCurrentIrpStackLocation(Irp);
Status = IoCallDriver(DeviceExtension->AttachedDevice, Irp);
}
//
// Otherwise just complete the request
// And return the status with which we complete it
//
else
{
Status = Irp->IoStatus.Status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
}
return Status;
}
NTSTATUS
@ -2211,9 +2311,51 @@ NTAPI
RamdiskScsi(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
UNIMPLEMENTED;
while (TRUE);
return STATUS_SUCCESS;
NTSTATUS Status;
PRAMDISK_BUS_EXTENSION DeviceExtension;
DeviceExtension = DeviceObject->DeviceExtension;
//
// Having a proper device is mandatory
//
if (DeviceExtension->State > RamdiskStateStopped)
{
Status = STATUS_DEVICE_DOES_NOT_EXIST;
goto CompleteIRP;
}
//
// Acquire the remove lock
//
Status = IoAcquireRemoveLock(&DeviceExtension->RemoveLock, Irp);
if (!NT_SUCCESS(Status))
{
goto CompleteIRP;
}
//
// Queue the IRP for worker
//
Status = SendIrpToThread(DeviceObject, Irp);
if (Status != STATUS_PENDING)
{
goto CompleteIRP;
}
//
// Release the remove lock
//
IoReleaseRemoveLock(&DeviceExtension->RemoveLock, Irp);
goto Quit;
CompleteIRP:
Irp->IoStatus.Information = 0;
Irp->IoStatus.Status = Status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
Quit:
return Status;
}
NTSTATUS
@ -2241,7 +2383,7 @@ RamdiskFlushBuffers(IN PDEVICE_OBJECT DeviceObject,
}
//
// Queue the IRP from worker
// Queue the IRP for worker
//
Status = SendIrpToThread(DeviceObject, Irp);
if (Status != STATUS_PENDING)