typedef struct _INVALIDATE_DEVICE_RELATION_DATA
{
+ PDEVICE_OBJECT DeviceObject;
DEVICE_RELATION_TYPE Type;
PIO_WORKITEM WorkItem;
- PKEVENT Event;
- NTSTATUS Status;
} INVALIDATE_DEVICE_RELATION_DATA, *PINVALIDATE_DEVICE_RELATION_DATA;
-static VOID NTAPI
-IopInvalidateDeviceRelations(
- IN PDEVICE_OBJECT DeviceObject,
- IN PVOID InvalidateContext);
-
VOID
NTAPI
IoSynchronousInvalidateDeviceRelations(
&Stack);
}
-/*
- * @implemented
- */
-VOID
-NTAPI
-IoInvalidateDeviceRelations(
+static VOID NTAPI
+IopAsynchronousInvalidateDeviceRelations(
IN PDEVICE_OBJECT DeviceObject,
- IN DEVICE_RELATION_TYPE Type)
+ IN PVOID InvalidateContext)
{
- PIO_WORKITEM WorkItem;
- PINVALIDATE_DEVICE_RELATION_DATA Data;
-
- Data = ExAllocatePool(PagedPool, sizeof(INVALIDATE_DEVICE_RELATION_DATA));
- if (!Data)
- return;
- WorkItem = IoAllocateWorkItem(DeviceObject);
- if (!WorkItem)
- {
- ExFreePool(Data);
- return;
- }
+ PINVALIDATE_DEVICE_RELATION_DATA Data = InvalidateContext;
- Data->Type = Type;
- Data->WorkItem = WorkItem;
- Data->Event = NULL;
+ IoSynchronousInvalidateDeviceRelations(
+ Data->DeviceObject,
+ Data->Type);
- IoQueueWorkItem(
- WorkItem,
- IopInvalidateDeviceRelations,
- DelayedWorkQueue,
- Data);
+ ObDereferenceObject(Data->WorkItem);
+ IoFreeWorkItem(Data->WorkItem);
+ ExFreePool(Data);
}
/*
*/
VOID
NTAPI
-IoSynchronousInvalidateDeviceRelations(
+IoInvalidateDeviceRelations(
IN PDEVICE_OBJECT DeviceObject,
IN DEVICE_RELATION_TYPE Type)
{
PIO_WORKITEM WorkItem;
PINVALIDATE_DEVICE_RELATION_DATA Data;
- KEVENT Event;
Data = ExAllocatePool(PagedPool, sizeof(INVALIDATE_DEVICE_RELATION_DATA));
if (!Data)
return;
}
- KeInitializeEvent(&Event, NotificationEvent, FALSE);
+ ObReferenceObject(DeviceObject);
+ Data->DeviceObject = DeviceObject;
Data->Type = Type;
Data->WorkItem = WorkItem;
- Data->Event = &Event;
IoQueueWorkItem(
WorkItem,
- IopInvalidateDeviceRelations,
+ IopAsynchronousInvalidateDeviceRelations,
DelayedWorkQueue,
Data);
-
- KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
- ExFreePool(Data);
}
/*
return STATUS_SUCCESS;
}
+/*
+ * @implemented
+ */
+VOID
+NTAPI
+IoSynchronousInvalidateDeviceRelations(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN DEVICE_RELATION_TYPE Type)
+{
+ PDEVICE_NODE DeviceNode = IopGetDeviceNode(DeviceObject);
+ DEVICETREE_TRAVERSE_CONTEXT Context;
+ PDEVICE_RELATIONS DeviceRelations;
+ IO_STATUS_BLOCK IoStatusBlock;
+ PDEVICE_NODE ChildDeviceNode;
+ IO_STACK_LOCATION Stack;
+ BOOLEAN BootDrivers;
+ OBJECT_ATTRIBUTES ObjectAttributes;
+ UNICODE_STRING LinkName = RTL_CONSTANT_STRING(L"\\SystemRoot");
+ HANDLE Handle;
+ NTSTATUS Status;
+ ULONG i;
+
+ DPRINT("DeviceObject 0x%p\n", DeviceObject);
+
+ DPRINT("Sending IRP_MN_QUERY_DEVICE_RELATIONS to device stack\n");
+
+ Stack.Parameters.QueryDeviceRelations.Type = Type;
+
+ Status = IopInitiatePnpIrp(
+ DeviceObject,
+ &IoStatusBlock,
+ IRP_MN_QUERY_DEVICE_RELATIONS,
+ &Stack);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT("IopInitiatePnpIrp() failed with status 0x%08lx\n", Status);
+ return;
+ }
+
+ DeviceRelations = (PDEVICE_RELATIONS)IoStatusBlock.Information;
+
+ if (!DeviceRelations || DeviceRelations->Count <= 0)
+ {
+ DPRINT("No PDOs\n");
+ if (DeviceRelations)
+ {
+ ExFreePool(DeviceRelations);
+ }
+ return;
+ }
+
+ DPRINT("Got %d PDOs\n", DeviceRelations->Count);
+
+ /*
+ * Create device nodes for all discovered devices
+ */
+ for (i = 0; i < DeviceRelations->Count; i++)
+ {
+ if (IopGetDeviceNode(DeviceRelations->Objects[i]) != NULL)
+ {
+ ObDereferenceObject(DeviceRelations->Objects[i]);
+ continue;
+ }
+ Status = IopCreateDeviceNode(
+ DeviceNode,
+ DeviceRelations->Objects[i],
+ NULL,
+ &ChildDeviceNode);
+ DeviceNode->Flags |= DNF_ENUMERATED;
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT("No resources\n");
+ for (i = 0; i < DeviceRelations->Count; i++)
+ ObDereferenceObject(DeviceRelations->Objects[i]);
+ ExFreePool(DeviceRelations);
+ return;
+ }
+ }
+ ExFreePool(DeviceRelations);
+
+ /*
+ * Retrieve information about all discovered children from the bus driver
+ */
+ IopInitDeviceTreeTraverseContext(
+ &Context,
+ DeviceNode,
+ IopActionInterrogateDeviceStack,
+ DeviceNode);
+
+ Status = IopTraverseDeviceTree(&Context);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT("IopTraverseDeviceTree() failed with status 0x%08lx\n", Status);
+ return;
+ }
+
+ /*
+ * Retrieve configuration from the registry for discovered children
+ */
+ IopInitDeviceTreeTraverseContext(
+ &Context,
+ DeviceNode,
+ IopActionConfigureChildServices,
+ DeviceNode);
+
+ Status = IopTraverseDeviceTree(&Context);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT("IopTraverseDeviceTree() failed with status 0x%08lx\n", Status);
+ return;
+ }
+
+ /*
+ * Get the state of the system boot. If the \\SystemRoot link isn't
+ * created yet, we will assume that it's possible to load only boot
+ * drivers.
+ */
+ InitializeObjectAttributes(
+ &ObjectAttributes,
+ &LinkName,
+ 0,
+ NULL,
+ NULL);
+ Status = ZwOpenFile(
+ &Handle,
+ FILE_ALL_ACCESS,
+ &ObjectAttributes,
+ &IoStatusBlock,
+ 0,
+ 0);
+ if (NT_SUCCESS(Status))
+ {
+ BootDrivers = FALSE;
+ ZwClose(Handle);
+ }
+ else
+ BootDrivers = TRUE;
+
+ /*
+ * Initialize services for discovered children. Only boot drivers will
+ * be loaded from boot driver!
+ */
+ Status = IopInitializePnpServices(DeviceNode, BootDrivers);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT("IopInitializePnpServices() failed with status 0x%08lx\n", Status);
+ return;
+ }
+
+ DPRINT("IopInvalidateDeviceRelations() finished\n");
+}
+
/*
* IopActionConfigureChildServices
*
return IopTraverseDeviceTree(&Context);
}
-/* Invalidate device list enumerated by a device node.
- * The call can be make synchronous by defining the Event field
- * of the INVALIDATE_DEVICE_RELATION_DATA structure
- */
-static VOID NTAPI
-IopInvalidateDeviceRelations(
- IN PDEVICE_OBJECT DeviceObject,
- IN PVOID InvalidateContext) /* PINVALIDATE_DEVICE_RELATION_DATA */
-{
- PINVALIDATE_DEVICE_RELATION_DATA Data = InvalidateContext;
- PDEVICE_NODE DeviceNode = IopGetDeviceNode(DeviceObject);
- PKEVENT Event = Data->Event;
- DEVICETREE_TRAVERSE_CONTEXT Context;
- PDEVICE_RELATIONS DeviceRelations;
- IO_STATUS_BLOCK IoStatusBlock;
- PDEVICE_NODE ChildDeviceNode;
- IO_STACK_LOCATION Stack;
- BOOLEAN BootDrivers;
- OBJECT_ATTRIBUTES ObjectAttributes;
- UNICODE_STRING LinkName = RTL_CONSTANT_STRING(L"\\SystemRoot");
- HANDLE Handle;
- NTSTATUS Status;
- ULONG i;
-
- DPRINT("DeviceObject 0x%p\n", DeviceObject);
-
- DPRINT("Sending IRP_MN_QUERY_DEVICE_RELATIONS to device stack\n");
-
- Stack.Parameters.QueryDeviceRelations.Type = Data->Type;
-
- Status = IopInitiatePnpIrp(
- DeviceObject,
- &IoStatusBlock,
- IRP_MN_QUERY_DEVICE_RELATIONS,
- &Stack);
- if (!NT_SUCCESS(Status))
- {
- DPRINT("IopInitiatePnpIrp() failed with status 0x%08lx\n", Status);
- goto cleanup;
- }
-
- DeviceRelations = (PDEVICE_RELATIONS)IoStatusBlock.Information;
-
- if (!DeviceRelations || DeviceRelations->Count <= 0)
- {
- DPRINT("No PDOs\n");
- if (DeviceRelations)
- {
- ExFreePool(DeviceRelations);
- }
- Status = STATUS_SUCCESS;
- goto cleanup;
- }
-
- DPRINT("Got %d PDOs\n", DeviceRelations->Count);
-
- /*
- * Create device nodes for all discovered devices
- */
- for (i = 0; i < DeviceRelations->Count; i++)
- {
- if (IopGetDeviceNode(DeviceRelations->Objects[i]) != NULL)
- {
- ObDereferenceObject(DeviceRelations->Objects[i]);
- continue;
- }
- Status = IopCreateDeviceNode(
- DeviceNode,
- DeviceRelations->Objects[i],
- NULL,
- &ChildDeviceNode);
- DeviceNode->Flags |= DNF_ENUMERATED;
- if (!NT_SUCCESS(Status))
- {
- DPRINT("No resources\n");
- for (i = 0; i < DeviceRelations->Count; i++)
- ObDereferenceObject(DeviceRelations->Objects[i]);
- ExFreePool(DeviceRelations);
- Status = STATUS_NO_MEMORY;
- goto cleanup;
- }
- }
- ExFreePool(DeviceRelations);
-
- /*
- * Retrieve information about all discovered children from the bus driver
- */
- IopInitDeviceTreeTraverseContext(
- &Context,
- DeviceNode,
- IopActionInterrogateDeviceStack,
- DeviceNode);
-
- Status = IopTraverseDeviceTree(&Context);
- if (!NT_SUCCESS(Status))
- {
- DPRINT("IopTraverseDeviceTree() failed with status 0x%08lx\n", Status);
- goto cleanup;
- }
-
- /*
- * Retrieve configuration from the registry for discovered children
- */
- IopInitDeviceTreeTraverseContext(
- &Context,
- DeviceNode,
- IopActionConfigureChildServices,
- DeviceNode);
-
- Status = IopTraverseDeviceTree(&Context);
- if (!NT_SUCCESS(Status))
- {
- DPRINT("IopTraverseDeviceTree() failed with status 0x%08lx\n", Status);
- goto cleanup;
- }
-
- /*
- * Get the state of the system boot. If the \\SystemRoot link isn't
- * created yet, we will assume that it's possible to load only boot
- * drivers.
- */
- InitializeObjectAttributes(
- &ObjectAttributes,
- &LinkName,
- 0,
- NULL,
- NULL);
- Status = ZwOpenFile(
- &Handle,
- FILE_ALL_ACCESS,
- &ObjectAttributes,
- &IoStatusBlock,
- 0,
- 0);
- if (NT_SUCCESS(Status))
- {
- BootDrivers = FALSE;
- ZwClose(Handle);
- }
- else
- BootDrivers = TRUE;
-
- /*
- * Initialize services for discovered children. Only boot drivers will
- * be loaded from boot driver!
- */
- Status = IopInitializePnpServices(DeviceNode, BootDrivers);
- if (!NT_SUCCESS(Status))
- {
- DPRINT("IopInitializePnpServices() failed with status 0x%08lx\n", Status);
- goto cleanup;
- }
-
- DPRINT("IopInvalidateDeviceRelations() finished\n");
- Status = STATUS_SUCCESS;
-
-cleanup:
- IoFreeWorkItem(Data->WorkItem);
- if (Event)
- {
- Data->Status = Status;
- KeSetEvent(Event, 0, FALSE);
- }
- else
- ExFreePool(Data);
-}
-
static NTSTATUS INIT_FUNCTION
IopEnumerateDetectedDevices(
IN HANDLE hBaseKey,
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