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- Add device state information.

Browse source 
- Start implementing RamdiskPnp -- enough to fail requests until our device state is appropriate.
- Implement RamdiskOpenClose.


svn path=/trunk/; revision=34450
This commit is contained in:
ReactOS Portable Systems Group 2008-07-13 07:02:48 +00:00
parent fbda572c17
commit ac0787ec04
1 changed files with 157 additions and 5 deletions
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162
reactos/drivers/storage/class/ramdisk/ramdisk.c
View file

@ -32,6 +32,14 @@ typedef enum _RAMDISK_DEVICE_TYPE
RamdiskPdo
} RAMDISK_DEVICE_TYPE;
typedef enum _RAMDISK_DEVICE_STATE
{
RamdiskStateUninitialized,
RamdiskStateStarted,
RamdiskStateStopped,
RamdiskStateRemoved
} RAMDISK_DEVICE_STATE;
DEFINE_GUID(RamdiskBusInterface,
0x5DC52DF0,
0x2F8A,
@ -41,6 +49,7 @@ DEFINE_GUID(RamdiskBusInterface,
typedef struct _RAMDISK_EXTENSION
{
RAMDISK_DEVICE_TYPE Type;
RAMDISK_DEVICE_STATE State;
PDEVICE_OBJECT DeviceObject;
PDEVICE_OBJECT PhysicalDeviceObject;
PDEVICE_OBJECT AttachedDevice;
@ -223,10 +232,14 @@ QueryParameters(IN PUNICODE_STRING RegistryPath)
NTSTATUS
NTAPI
RamdiskOpenClose(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
IN PIRP Irp)
{
UNIMPLEMENTED;
while (TRUE);
//
// Complete the IRP
//
Irp->IoStatus.Information = 1;
Irp->IoStatus.Status = STATUS_SUCCESS;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return STATUS_SUCCESS;
}
@ -255,9 +268,148 @@ NTAPI
RamdiskPnp(IN PDEVICE_OBJECT DeviceObject,
IN PIRP Irp)
{
UNIMPLEMENTED;
PIO_STACK_LOCATION IoStackLocation;
PRAMDISK_EXTENSION DeviceExtension;
NTSTATUS Status;
UCHAR Minor;
//
// Get the device extension and stack location
//
DeviceExtension = DeviceObject->DeviceExtension;
IoStackLocation = IoGetCurrentIrpStackLocation(Irp);
Minor = IoStackLocation->MinorFunction;
//
// Check if the device is initialized
//
if (DeviceExtension->State == RamdiskStateUninitialized)
{
//
// Only remove-device and query-id are allowed
//
if ((Minor != IRP_MN_REMOVE_DEVICE) || (Minor != IRP_MN_QUERY_ID))
{
//
// Fail anything else
//
Status = STATUS_NO_SUCH_DEVICE;
Irp->IoStatus.Status = Status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return Status;
}
}
//
// Acquire the remove lock
//
Status = IoAcquireRemoveLock(&DeviceExtension->RemoveLock, Irp);
if (!NT_SUCCESS(Status))
{
//
// Fail the IRP
//
Irp->IoStatus.Information = 0;
Irp->IoStatus.Status = Status;
IoCompleteRequest(Irp, IO_NO_INCREMENT);
return Status;
}
//
// Query the IRP type
//
switch (Minor)
{
case IRP_MN_START_DEVICE:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
case IRP_MN_QUERY_STOP_DEVICE:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
case IRP_MN_CANCEL_STOP_DEVICE:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
case IRP_MN_STOP_DEVICE:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
case IRP_MN_QUERY_REMOVE_DEVICE:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
case IRP_MN_CANCEL_REMOVE_DEVICE:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
case IRP_MN_REMOVE_DEVICE:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
case IRP_MN_QUERY_ID:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
case IRP_MN_QUERY_BUS_INFORMATION:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
case IRP_MN_EJECT:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
case IRP_MN_QUERY_DEVICE_TEXT:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
case IRP_MN_QUERY_DEVICE_RELATIONS:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
case IRP_MN_QUERY_CAPABILITIES:
DPRINT1("PnP IRP: %lx\n", Minor);
while (TRUE);
break;
default:
DPRINT1("Illegal IRP: %lx\n", Minor);
break;
}
//
// Release the lock and return status
//
IoReleaseRemoveLock(&DeviceExtension->RemoveLock, Irp);
while (TRUE);
return STATUS_SUCCESS;
return Status;
}
NTSTATUS