[janderwald] 50067: [AUDIO-BRINGUP] - Move software bus functions into swenum.c - Add missing #undef INTERFACE in ksiface.h - Partly implement KsRemoveBusEnumInterface - Implement KsServiceBusEnumP...
20 Dec
2010
20 Dec
'10
2:45 a.m.
Author: janderwald
Date: Mon Dec 20 02:45:18 2010
New Revision: 50067
URL: http://svn.reactos.org/svn/reactos?rev=50067&view=rev
Log:
[AUDIO-BRINGUP]
- Move software bus functions into swenum.c
- Add missing #undef INTERFACE in ksiface.h
- Partly implement KsRemoveBusEnumInterface
- Implement KsServiceBusEnumPnpRequest, KsServiceBusEnumCreateRequest,
KsIsBusEnumChildDevice, KsInstallBusEnumInterface, KsGetBusEnumPnpDeviceObject,
KsCreateBusEnumObject, KsGetBusEnumParentFDOFromChildPDO, KsGetBusEnumIdentifier
- KS now supports the software bus driver
- As a side effect, ks.sys now fully works in Windows XP
- Tested with VBox+WINXP SP3+
Added:
branches/audio-bringup/drivers/ksfilter/ks/swenum.c (with props)
Modified:
branches/audio-bringup/drivers/ksfilter/ks/api.c
branches/audio-bringup/drivers/ksfilter/ks/ks.rbuild
branches/audio-bringup/drivers/ksfilter/ks/ksiface.h
branches/audio-bringup/drivers/ksfilter/ks/kstypes.h
branches/audio-bringup/drivers/ksfilter/ks/priv.h
Modified: branches/audio-bringup/drivers/ksfilter/ks/api.c
URL:
http://svn.reactos.org/svn/reactos/branches/audio-bringup/drivers/ksfilter/…
==============================================================================
--- branches/audio-bringup/drivers/ksfilter/ks/api.c [iso-8859-1] (original)
+++ branches/audio-bringup/drivers/ksfilter/ks/api.c [iso-8859-1] Mon Dec 20 02:45:18
2010
@@ -1723,146 +1723,7 @@
}
-/*
- @implemented
-*/
-KSDDKAPI
-NTSTATUS
-NTAPI
-KsCreateBusEnumObject(
- IN PWCHAR BusIdentifier,
- IN PDEVICE_OBJECT BusDeviceObject,
- IN PDEVICE_OBJECT PhysicalDeviceObject,
- IN PDEVICE_OBJECT PnpDeviceObject OPTIONAL,
- IN REFGUID InterfaceGuid OPTIONAL,
- IN PWCHAR ServiceRelativePath OPTIONAL)
-{
- ULONG Length;
- NTSTATUS Status = STATUS_SUCCESS;
- UNICODE_STRING ServiceKeyPath =
RTL_CONSTANT_STRING(L"\\REGISTRY\\MACHINE\\SYSTEM\\CurrentControlSet\\Services\\");
- PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
- PDEVICE_EXTENSION DeviceExtension;
-
- DPRINT1("KsCreateBusEnumObject %S\n", ServiceRelativePath);
- DbgBreakPoint();
-
- /* calculate sizeof bus enum device extension */
- Length = wcslen(BusIdentifier) * sizeof(WCHAR);
- Length += sizeof(BUS_ENUM_DEVICE_EXTENSION);
-
- BusDeviceExtension = AllocateItem(NonPagedPool, Length);
- if (!BusDeviceExtension)
- {
- /* not enough memory */
- return STATUS_INSUFFICIENT_RESOURCES;
- }
-
- /* zero device extension */
- RtlZeroMemory(BusDeviceExtension, sizeof(BUS_ENUM_DEVICE_EXTENSION));
-
- /* store bus device extension */
- *((PVOID*)BusDeviceObject->DeviceExtension) = BusDeviceExtension;
-
- /* initialize bus device extension */
- wcscpy(BusDeviceExtension->BusIdentifier, BusIdentifier);
-
- /* allocate service path string */
- Length = ServiceKeyPath.MaximumLength;
- Length +=
BusDeviceObject->DriverObject->DriverExtension->ServiceKeyName.MaximumLength;
-
- if (ServiceRelativePath)
- {
- /* relative path for devices */
- Length += (wcslen(ServiceRelativePath) + 2) * sizeof(WCHAR);
- }
-
- BusDeviceExtension->ServicePath.Length = 0;
- BusDeviceExtension->ServicePath.MaximumLength = Length;
- BusDeviceExtension->ServicePath.Buffer = AllocateItem(NonPagedPool, Length);
-
- if (!BusDeviceExtension->ServicePath.Buffer)
- {
- /* not enough memory */
- FreeItem(BusDeviceExtension);
- return STATUS_INSUFFICIENT_RESOURCES;
- }
-
- RtlAppendUnicodeStringToString(&BusDeviceExtension->ServicePath,
&ServiceKeyPath);
- RtlAppendUnicodeStringToString(&BusDeviceExtension->ServicePath,
&BusDeviceObject->DriverObject->DriverExtension->ServiceKeyName);
-
- if (ServiceRelativePath)
- {
- RtlAppendUnicodeToString(&BusDeviceExtension->ServicePath,
L"\\");
- RtlAppendUnicodeToString(&BusDeviceExtension->ServicePath,
ServiceRelativePath);
- }
-
- if (InterfaceGuid)
- {
- /* register an device interface */
- Status = IoRegisterDeviceInterface(PhysicalDeviceObject, InterfaceGuid, NULL,
&BusDeviceExtension->SymbolicLinkName);
-
- /* check for success */
- if (!NT_SUCCESS(Status))
- {
- FreeItem(BusDeviceExtension->ServicePath.Buffer);
- FreeItem(BusDeviceExtension);
- return Status;
- }
-
- /* now enable device interface */
- Status = IoSetDeviceInterfaceState(&BusDeviceExtension->SymbolicLinkName,
TRUE);
-
- if (!NT_SUCCESS(Status))
- {
- FreeItem(BusDeviceExtension->ServicePath.Buffer);
- FreeItem(BusDeviceExtension);
- return Status;
- }
-
- /* set state enabled */
- BusDeviceExtension->Enabled = TRUE;
- }
-
- /* store device objects */
- BusDeviceExtension->BusDeviceObject = BusDeviceObject;
- BusDeviceExtension->PnpDeviceObject = PnpDeviceObject;
- BusDeviceExtension->PhysicalDeviceObject = PhysicalDeviceObject;
-
- if (!PnpDeviceObject)
- {
- BusDeviceExtension->PnpDeviceObject =
IoAttachDeviceToDeviceStack(BusDeviceObject, PhysicalDeviceObject);
-
- if (!BusDeviceExtension->PnpDeviceObject)
- {
- /* failed to attach device */
- if (BusDeviceExtension->Enabled)
- {
- IoSetDeviceInterfaceState(&BusDeviceExtension->SymbolicLinkName,
FALSE);
- RtlFreeUnicodeString(&BusDeviceExtension->SymbolicLinkName);
- }
-
- /* free device extension */
- FreeItem(BusDeviceExtension->ServicePath.Buffer);
- FreeItem(BusDeviceExtension);
-
- return STATUS_DEVICE_REMOVED;
- }
- }
- else
- {
- /* directly attach */
- BusDeviceExtension->PnpDeviceObject = PnpDeviceObject;
- }
-
- /* attach device extension */
- DeviceExtension = (PDEVICE_EXTENSION)BusDeviceObject->DeviceExtension;
- DeviceExtension->DeviceHeader = (PKSIDEVICE_HEADER)BusDeviceExtension;
-
- /* FIXME scan bus and invalidate device relations */
- return Status;
-}
-
- NTSTATUS
+NTSTATUS
NTAPI
KspSetGetBusDataCompletion(
IN PDEVICE_OBJECT DeviceObject,
@@ -1990,130 +1851,6 @@
}
-/*
- @implemented
-*/
-KSDDKAPI
-NTSTATUS
-NTAPI
-KsGetBusEnumIdentifier(
- IN PIRP Irp)
-{
- PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
- PIO_STACK_LOCATION IoStack;
- ULONG Length;
- NTSTATUS Status;
- LPWSTR Buffer;
-
- /* get stack location */
- IoStack = IoGetCurrentIrpStackLocation(Irp);
-
- /* sanity checks */
- ASSERT(IoStack->DeviceObject);
- ASSERT(IoStack->DeviceObject->DeviceExtension);
-
- /* get bus device extension */
- BusDeviceExtension =
*(PBUS_ENUM_DEVICE_EXTENSION*)(IoStack->DeviceObject->DeviceExtension);
-
- if (!BusDeviceExtension)
- {
- /* invalid parameter */
- return STATUS_INVALID_PARAMETER;
- }
-
- /* get length */
- Length = (wcslen(BusDeviceExtension->BusIdentifier)+1) * sizeof(WCHAR);
-
- /* is there an output buffer provided */
- if (IoStack->Parameters.DeviceIoControl.InputBufferLength)
- {
- if (Length > IoStack->Parameters.DeviceIoControl.InputBufferLength)
- {
- /* buffer is too small */
- return STATUS_BUFFER_TOO_SMALL;
- }
-
- /* now allocate buffer */
- Buffer = AllocateItem(NonPagedPool, Length);
- if (!Buffer)
- {
- /* no memory */
- Status = STATUS_INSUFFICIENT_RESOURCES;
- }
- else
- {
- /* copy bus identifier */
- wcscpy(Buffer, BusDeviceExtension->BusIdentifier);
-
- /* store buffer */
- Irp->AssociatedIrp.SystemBuffer = Buffer;
-
- /* set flag that buffer gets copied back */
- Irp->Flags |= IRP_BUFFERED_IO | IRP_DEALLOCATE_BUFFER |
IRP_INPUT_OPERATION;
-
- /* done */
- Status = STATUS_SUCCESS;
- }
- }
- else
- {
- /* no buffer provided */
- Status = STATUS_BUFFER_OVERFLOW;
- }
-
- /* done */
- return Status;
-}
-
-/*
- @unimplemented
-*/
-KSDDKAPI
-NTSTATUS
-NTAPI
-KsGetBusEnumParentFDOFromChildPDO(
- IN PDEVICE_OBJECT DeviceObject,
- OUT PDEVICE_OBJECT *FunctionalDeviceObject)
-{
- DPRINT1("KsGetBusEnumParentFDOFromChildPDO\n");
- DbgBreakPoint();
- return STATUS_UNSUCCESSFUL;
-}
-
-/*
- @implemented
-*/
-KSDDKAPI
-NTSTATUS
-NTAPI
-KsGetBusEnumPnpDeviceObject(
- IN PDEVICE_OBJECT DeviceObject,
- IN PDEVICE_OBJECT *PnpDeviceObject)
-{
- PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
-
- if (!DeviceObject->DeviceExtension)
- {
- /* invalid parameter */
- return STATUS_INVALID_PARAMETER;
- }
-
- /* get bus device extension */
- BusDeviceExtension =
*(PBUS_ENUM_DEVICE_EXTENSION*)(DeviceObject->DeviceExtension);
-
- if (!BusDeviceExtension)
- {
- /* invalid parameter */
- return STATUS_INVALID_PARAMETER;
- }
-
- /* store result */
- *PnpDeviceObject = BusDeviceExtension->PnpDeviceObject;
-
-
- /* done */
- return STATUS_SUCCESS;
-}
/*
@implemented
@@ -2153,37 +1890,6 @@
BasicHeader->Type == KsObjectTypeFilter || BasicHeader->Type ==
KsObjectTypePin);
return (PVOID)BasicHeader->Next.Pin;
-}
-
-/*
- @unimplemented
-*/
-KSDDKAPI
-NTSTATUS
-NTAPI
-KsInstallBusEnumInterface(
- PIRP Irp)
-{
- UNIMPLEMENTED
- DPRINT1("KsInstallBusEnumInterface\n");
- DbgBreakPoint();
- return STATUS_UNSUCCESSFUL;
-}
-
-/*
- @unimplemented
-*/
-KSDDKAPI
-NTSTATUS
-NTAPI
-KsIsBusEnumChildDevice(
- IN PDEVICE_OBJECT DeviceObject,
- OUT PBOOLEAN ChildDevice)
-{
- UNIMPLEMENTED
- DPRINT1("KsIsBusEnumChildDevice\n");
- DbgBreakPoint();
- return STATUS_UNSUCCESSFUL;
}
ULONG
@@ -2700,154 +2406,6 @@
@unimplemented
*/
KSDDKAPI
-NTSTATUS
-NTAPI
-KsServiceBusEnumCreateRequest(
- IN PDEVICE_OBJECT DeviceObject,
- IN OUT PIRP Irp)
-{
- UNIMPLEMENTED
- DPRINT1("KsServiceBusEnumCreateRequest\n");
- DbgBreakPoint();
- return STATUS_UNSUCCESSFUL;
-}
-
-
-/*
- @unimplemented
-*/
-KSDDKAPI
-NTSTATUS
-NTAPI
-KsServiceBusEnumPnpRequest(
- IN PDEVICE_OBJECT DeviceObject,
- IN OUT PIRP Irp)
-{
- UNIMPLEMENTED
- DPRINT1("KsServiceBusEnumPnpRequest\n");
- DbgBreakPoint();
-/*
-KsServiceBusEnumPnpRequest services the following Plug and Play IRPs for an FDO or parent
device:
-
- *
- IRP_MN_START_DEVICE
- IRP_MN_QUERY_BUS_INFORMATION OK
- IRP_MN_QUERY_DEVICE_RELATIONS
- IRP_MN_QUERY_STOP_DEVICE
- IRP_MN_QUERY_REMOVE_DEVICE
- IRP_MN_CANCEL_STOP_DEVICE
- IRP_MN_CANCEL_REMOVE_DEVICE
- IRP_MN_STOP_DEVICE
- IRP_MN_REMOVE_DEVICE
-*/
-
-/*
-Plug and Play IRPs for a PDO or child device:
-
- *
- IRP_MN_START_DEVICE
- IRP_MN_QUERY_STOP_DEVICE
- IRP_MN_QUERY_REMOVE_DEVICE
- IRP_MN_STOP_DEVICE
- IRP_MN_REMOVE_DEVICE
- IRP_MN_QUERY_DEVICE_RELATIONS (TargetDeviceRelations)
- IRP_MN_QUERY_PNP_DEVICE_STATE
- IRP_MN_QUERY_ID
- IRP_MN_QUERY_INTERFACE
- IRP_MN_QUERY_RESOURCES NOP
- IRP_MN_QUERY_RESOURCE_REQUIREMENTS NOP
- IRP_MN_READ_CONFIG
- IRP_MN_WRITE_CONFIG
- IRP_MN_QUERY_CAPABILITIES
-
-*/
-/**
- Request: IRP_MN_QUERY_BUS_INFORMATION
- : GUID PNP_BUS_INFORMATION
- BusTypeGuid: KSMEDIUMSETID_Standard
- LegacyBusType: InterfaceTypeUndefined
- BusNumber: 0
-*/
-
- return STATUS_UNSUCCESSFUL;
-}
-
-VOID
-NTAPI
-KspRemoveBusInterface(
- PVOID Ctx)
-{
- PKSREMOVE_BUS_INTERFACE_CTX Context =(PKSREMOVE_BUS_INTERFACE_CTX)Ctx;
-
- /* TODO
- * get SWENUM_INSTALL_INTERFACE struct
- * open device key and delete the keys
- */
-
- UNIMPLEMENTED
-
- /* set status */
- Context->Irp->IoStatus.Status = STATUS_NOT_IMPLEMENTED;
-
-
- /* signal completion */
- KeSetEvent(&Context->Event, IO_NO_INCREMENT, FALSE);
-}
-
-/*
- @unimplemented
-*/
-KSDDKAPI
-NTSTATUS
-NTAPI
-KsRemoveBusEnumInterface(
- IN PIRP Irp)
-{
- KPROCESSOR_MODE Mode;
- LUID luid;
- KSREMOVE_BUS_INTERFACE_CTX Ctx;
- WORK_QUEUE_ITEM WorkItem;
-
- DPRINT1("KsRemoveBusEnumInterface\n");
- DbgBreakPoint();
-
- /* get previous mode */
- Mode = ExGetPreviousMode();
-
- /* convert to luid */
- luid = RtlConvertUlongToLuid(SE_LOAD_DRIVER_PRIVILEGE);
-
- /* perform access check */
- if (!SeSinglePrivilegeCheck(luid, Mode))
- {
- /* insufficient privileges */
- return STATUS_PRIVILEGE_NOT_HELD;
- }
- /* initialize event */
- KeInitializeEvent(&Ctx.Event, NotificationEvent, FALSE);
-
- /* store irp in ctx */
- Ctx.Irp = Irp;
-
- /* initialize work item */
- ExInitializeWorkItem(&WorkItem, KspRemoveBusInterface, (PVOID)&Ctx);
-
- /* now queue the work item */
- ExQueueWorkItem(&WorkItem, DelayedWorkQueue);
-
- /* wait for completion */
- KeWaitForSingleObject(&Ctx.Event, Executive, KernelMode, FALSE, NULL);
-
- /* return result */
- return Ctx.Irp->IoStatus.Status;
-
-}
-
-
-/*
- @unimplemented
-*/
-KSDDKAPI
PUNKNOWN
NTAPI
KsRegisterAggregatedClientUnknown(
Modified: branches/audio-bringup/drivers/ksfilter/ks/ks.rbuild
URL:
http://svn.reactos.org/svn/reactos/branches/audio-bringup/drivers/ksfilter/…
==============================================================================
--- branches/audio-bringup/drivers/ksfilter/ks/ks.rbuild [iso-8859-1] (original)
+++ branches/audio-bringup/drivers/ksfilter/ks/ks.rbuild [iso-8859-1] Mon Dec 20 02:45:18
2010
@@ -32,4 +32,5 @@
<file>unknown.c</file>
<file>worker.c</file>
<file>kcom.c</file>
+ <file>swenum.c</file>
</module>
Modified: branches/audio-bringup/drivers/ksfilter/ks/ksiface.h
URL:
http://svn.reactos.org/svn/reactos/branches/audio-bringup/drivers/ksfilter/…
==============================================================================
--- branches/audio-bringup/drivers/ksfilter/ks/ksiface.h [iso-8859-1] (original)
+++ branches/audio-bringup/drivers/ksfilter/ks/ksiface.h [iso-8859-1] Mon Dec 20 02:45:18
2010
@@ -307,3 +307,5 @@
STDMETHOD_(NTSTATUS, CheckIoCapability)(THIS_
IN ULONG Unknown)PURE;
};
+
+#undef INTERFACE
Modified: branches/audio-bringup/drivers/ksfilter/ks/kstypes.h
URL:
http://svn.reactos.org/svn/reactos/branches/audio-bringup/drivers/ksfilter/…
==============================================================================
--- branches/audio-bringup/drivers/ksfilter/ks/kstypes.h [iso-8859-1] (original)
+++ branches/audio-bringup/drivers/ksfilter/ks/kstypes.h [iso-8859-1] Mon Dec 20 02:45:18
2010
@@ -136,12 +136,6 @@
typedef struct
{
- PIRP Irp;
- KEVENT Event;
-}KSREMOVE_BUS_INTERFACE_CTX, *PKSREMOVE_BUS_INTERFACE_CTX;
-
-typedef struct
-{
PLIST_ENTRY List;
PFILE_OBJECT FileObject;
PKSEVENT_ENTRY EventEntry;
@@ -150,19 +144,96 @@
typedef BOOLEAN (NTAPI *PKSEVENT_SYNCHRONIZED_ROUTINE)(PKSEVENT_CTX Context);
-typedef struct
-{
- BOOLEAN Enabled;
-
+struct __BUS_ENUM_DEVICE_EXTENSION__;
+struct BUS_DEVICE_ENTRY;
+
+typedef struct
+{
+ LIST_ENTRY Entry;
+ ULONG IsBus;
+ union
+ {
+ PDEVICE_OBJECT DeviceObject;
+ ULONG DeviceReferenceCount;
+ };
+ union
+ {
+ PVOID DeviceEntry;
+ ULONG Dummy1;
+ };
+ struct __BUS_ENUM_DEVICE_EXTENSION__ *BusDeviceExtension;
+ ULONG DeviceObjectReferenceCount;
+}COMMON_DEVICE_EXTENSION, *PCOMMON_DEVICE_EXTENSION;
+
+typedef struct
+{
+ PCOMMON_DEVICE_EXTENSION Ext;
+}DEV_EXTENSION, *PDEV_EXTENSION;
+
+typedef struct
+{
+ LIST_ENTRY Entry;
+ GUID InterfaceGuid;
+ UNICODE_STRING SymbolicLink;
+}BUS_INSTANCE_ENTRY, *PBUS_INSTANCE_ENTRY;
+
+
+
+typedef enum
+{
+ NotStarted = 0, // Not started yet
+ Started, // Device has received the START_DEVICE IRP
+ StopPending, // Device has received the QUERY_STOP IRP
+ Stopped, // Device has received the STOP_DEVICE IRP
+ RemovePending, // Device has received the QUERY_REMOVE IRP
+ SurpriseRemovePending, // Device has received the SURPRISE_REMOVE IRP
+ Deleted
+}DEVICE_STATE;
+
+
+typedef struct
+{
+ LIST_ENTRY Entry;
+ LIST_ENTRY DeviceInterfaceList;
+ LIST_ENTRY IrpPendingList;
+ PDEVICE_OBJECT PDO;
+ DEVICE_STATE DeviceState;
+ GUID DeviceGuid;
+ LPWSTR PDODeviceName;
+ LPWSTR DeviceName;
+ LPWSTR BusId;
+ LARGE_INTEGER TimeCreated;
+ LARGE_INTEGER TimeExpired;
+ LPWSTR Instance;
+}BUS_DEVICE_ENTRY, *PBUS_DEVICE_ENTRY;
+
+typedef struct __BUS_ENUM_DEVICE_EXTENSION__
+{
+ COMMON_DEVICE_EXTENSION Common;
+ KSPIN_LOCK Lock;
+ KEVENT Event;
+ UNICODE_STRING DeviceInterfaceLink;
+ PDEVICE_OBJECT PhysicalDeviceObject;
PDEVICE_OBJECT PnpDeviceObject;
- PDEVICE_OBJECT PhysicalDeviceObject;
PDEVICE_OBJECT BusDeviceObject;
-
+ ULONG PdoCreated;
+ KTIMER Timer;
+ KDPC Dpc;
+ WORK_QUEUE_ITEM WorkItem;
+ ULONG DeviceAttached;
UNICODE_STRING ServicePath;
- UNICODE_STRING SymbolicLinkName;
WCHAR BusIdentifier[1];
}BUS_ENUM_DEVICE_EXTENSION, *PBUS_ENUM_DEVICE_EXTENSION;
+
+typedef struct
+{
+ PIRP Irp;
+ PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
+ KEVENT Event;
+ NTSTATUS Status;
+ WORK_QUEUE_ITEM WorkItem;
+}BUS_INSTALL_ENUM_CONTEXT, *PBUS_INSTALL_ENUM_CONTEXT;
typedef struct
{
Modified: branches/audio-bringup/drivers/ksfilter/ks/priv.h
URL:
http://svn.reactos.org/svn/reactos/branches/audio-bringup/drivers/ksfilter/…
==============================================================================
--- branches/audio-bringup/drivers/ksfilter/ks/priv.h [iso-8859-1] (original)
+++ branches/audio-bringup/drivers/ksfilter/ks/priv.h [iso-8859-1] Mon Dec 20 02:45:18
2010
@@ -19,6 +19,8 @@
#include "ksmedia.h"
#include "bdamedia.h"
+#include <swenum.h>
+
#define TAG_DEVICE_HEADER 'KSDH'
#define REG_PINFLAG_B_MANY 0x4 /* strmif.h */
Added: branches/audio-bringup/drivers/ksfilter/ks/swenum.c
URL:
http://svn.reactos.org/svn/reactos/branches/audio-bringup/drivers/ksfilter/…
==============================================================================
--- branches/audio-bringup/drivers/ksfilter/ks/swenum.c (added)
+++ branches/audio-bringup/drivers/ksfilter/ks/swenum.c [iso-8859-1] Mon Dec 20 02:45:18
2010
@@ -1,0 +1,1961 @@
+/*
+ * COPYRIGHT: See COPYING in the top level directory
+ * PROJECT: ReactOS Kernel Streaming
+ * FILE: drivers/ksfilter/ks/swenum.c
+ * PURPOSE: KS Software BUS functions
+ * PROGRAMMER: Johannes Anderwald
+ */
+
+
+#include "priv.h"
+
+LONG KsDeviceCount = 0;
+
+typedef NTSTATUS (NTAPI *PKSP_BUS_ENUM_CALLBACK)(
+ IN PHANDLE hKey,
+ IN PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension,
+ IN PBUS_DEVICE_ENTRY DummyEntry,
+ IN LPWSTR RootName,
+ IN LPWSTR DirectoryName);
+
+NTSTATUS
+KspCreatePDO(
+ IN PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension,
+ IN PBUS_DEVICE_ENTRY DeviceEntry,
+ OUT PDEVICE_OBJECT * OutDeviceObject)
+{
+ PDEVICE_OBJECT DeviceObject;
+ WCHAR Buffer[50];
+ ULONG CurDeviceId;
+ UNICODE_STRING DeviceName;
+ NTSTATUS Status;
+ PCOMMON_DEVICE_EXTENSION DeviceExtension;
+
+ /* increment device count */
+ CurDeviceId = InterlockedIncrement(&KsDeviceCount);
+
+ /* generate new device id */
+ swprintf(Buffer, L"\\Device\\KSENUM%08x\n", CurDeviceId);
+
+ /* initialize new device name */
+ RtlInitUnicodeString(&DeviceName, Buffer);
+
+ /* create new device object */
+ Status = IoCreateDevice(BusDeviceExtension->BusDeviceObject->DriverObject,
sizeof(PVOID), &DeviceName, FILE_DEVICE_UNKNOWN, 0, FALSE, &DeviceObject);
+
+ /* check for success */
+ if (!NT_SUCCESS(Status))
+ {
+ /* failed to create pdo */
+ return Status;
+ }
+
+ /* now allocate device extension */
+ DeviceExtension = (PCOMMON_DEVICE_EXTENSION)AllocateItem(NonPagedPool,
sizeof(COMMON_DEVICE_EXTENSION));
+ if (!DeviceExtension)
+ {
+ /* no memory */
+ IoDeleteDevice(DeviceObject);
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* store device extension */
+ *((PVOID*)DeviceObject->DeviceExtension) = DeviceExtension;
+
+ /* initialize device extension */
+ DeviceExtension->IsBus = FALSE;
+ DeviceExtension->DeviceObject = DeviceObject;
+ DeviceExtension->DeviceEntry = DeviceEntry;
+ DeviceExtension->BusDeviceExtension = BusDeviceExtension;
+
+ /* TODO: update last creation time in bus device extension */
+
+ /* setup flags */
+ DeviceObject->Flags |= DO_DIRECT_IO | DO_POWER_PAGABLE;
+
+ /* TODO: fire time when expired */
+
+ *OutDeviceObject = DeviceObject;
+
+ return STATUS_SUCCESS;
+}
+
+NTSTATUS
+KspRegisterDeviceAssociation(
+ IN PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension,
+ IN PBUS_DEVICE_ENTRY DeviceEntry,
+ IN OUT PBUS_INSTANCE_ENTRY BusInstanceEntry)
+{
+ NTSTATUS Status;
+ UNICODE_STRING ReferenceString;
+
+ /* initialize reference string */
+ RtlInitUnicodeString(&ReferenceString, DeviceEntry->DeviceName);
+
+ /* register device interface */
+ Status = IoRegisterDeviceInterface(BusDeviceExtension->PhysicalDeviceObject,
&BusInstanceEntry->InterfaceGuid, &ReferenceString,
&BusInstanceEntry->SymbolicLink);
+
+ /* check for success */
+ if (!NT_SUCCESS(Status))
+ {
+ /* failed */
+ return Status;
+ }
+
+ /* now enable the interface */
+ Status = IoSetDeviceInterfaceState(&BusInstanceEntry->SymbolicLink, TRUE);
+
+ /* check for success */
+ if (!NT_SUCCESS(Status))
+ {
+ /* failed, free memory */
+ FreeItem(BusInstanceEntry->SymbolicLink.Buffer);
+ return Status;
+ }
+
+ DPRINT1("Registered DeviceInterface %wZ\n",
&BusInstanceEntry->SymbolicLink);
+
+
+ /* done */
+ return Status;
+}
+
+VOID
+KspRemoveDeviceAssociations(
+ IN PBUS_DEVICE_ENTRY DeviceEntry)
+{
+ PLIST_ENTRY Entry;
+ PBUS_INSTANCE_ENTRY CurEntry;
+
+ /* remove all entries */
+ Entry = DeviceEntry->DeviceInterfaceList.Flink;
+
+ while(Entry != &DeviceEntry->DeviceInterfaceList)
+ {
+ /* get offset */
+ CurEntry = (PBUS_INSTANCE_ENTRY)CONTAINING_RECORD(Entry, BUS_INSTANCE_ENTRY,
Entry);
+
+ /* sanity check */
+ ASSERT(CurEntry->SymbolicLink.Buffer);
+
+ /* de-register interface */
+ IoSetDeviceInterfaceState(&CurEntry->SymbolicLink, FALSE);
+
+ /* free symbolic link buffer */
+ FreeItem(CurEntry->SymbolicLink.Buffer);
+
+ /* remove entry from list */
+ RemoveEntryList(Entry);
+
+ /* move to next entry */
+ Entry = Entry->Flink;
+
+ /* free entry */
+ FreeItem(CurEntry);
+ }
+}
+
+NTSTATUS
+KspEnumerateBusRegistryKeys(
+ IN HANDLE hKey,
+ IN LPWSTR ReferenceString,
+ IN PKSP_BUS_ENUM_CALLBACK Callback,
+ IN PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension,
+ IN PBUS_DEVICE_ENTRY DeviceEntry)
+{
+ UNICODE_STRING String;
+ OBJECT_ATTRIBUTES ObjectAttributes;
+ HANDLE hNewKey;
+ NTSTATUS Status;
+ ULONG ResultLength, Index, KeyInfoLength;
+ KEY_FULL_INFORMATION KeyInformation;
+ PKEY_BASIC_INFORMATION KeyInfo;
+
+ /* initialize key name */
+ RtlInitUnicodeString(&String, ReferenceString);
+
+ /* initialize object attributes */
+ InitializeObjectAttributes(&ObjectAttributes, &String, OBJ_KERNEL_HANDLE |
OBJ_CASE_INSENSITIVE, hKey, NULL);
+
+ /* open new key */
+ Status = ZwOpenKey(&hNewKey, GENERIC_READ, &ObjectAttributes);
+
+ /* check for success */
+ if (!NT_SUCCESS(Status))
+ {
+ /* failed to open key */
+
+ return Status;
+ }
+
+ /* query key stats */
+ Status = ZwQueryKey(hNewKey, KeyFullInformation, &KeyInformation,
sizeof(KeyInformation), &ResultLength);
+
+ if (!NT_SUCCESS(Status))
+ {
+ /* close key */
+ ZwClose(hNewKey);
+
+ /* done */
+ return Status;
+ }
+
+ /* calculate key info length */
+ KeyInfoLength = KeyInformation.MaxNameLen + sizeof(KEY_BASIC_INFORMATION) + 1 *
sizeof(WCHAR);
+
+ /* allocate buffer */
+ KeyInfo = (PKEY_BASIC_INFORMATION)AllocateItem(NonPagedPool, KeyInfoLength);
+ if (!KeyInfo)
+ {
+
+ /* no memory */
+ ZwClose(hNewKey);
+
+ /* done */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* enumerate all keys */
+ for(Index = 0; Index < KeyInformation.SubKeys; Index++)
+ {
+
+ /* query sub key */
+ Status = ZwEnumerateKey(hNewKey, Index, KeyBasicInformation, (PVOID)KeyInfo,
KeyInfoLength, &ResultLength);
+
+ /* check for success */
+ if (NT_SUCCESS(Status))
+ {
+ /* perform callback */
+ Status = Callback(hNewKey, BusDeviceExtension, DeviceEntry, ReferenceString,
KeyInfo->Name);
+
+ /* should enumeration stop */
+ if (!NT_SUCCESS(Status))
+ break;
+ }
+ }
+
+ /* free info buffer */
+ FreeItem(KeyInfo);
+
+ /* close key */
+ ZwClose(hNewKey);
+
+ /* done */
+ return Status;
+}
+
+NTSTATUS
+NTAPI
+KspCreateDeviceAssociation(
+ IN PHANDLE hKey,
+ IN PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension,
+ IN PBUS_DEVICE_ENTRY DeviceEntry,
+ IN LPWSTR ReferenceString,
+ IN LPWSTR InterfaceString)
+{
+ GUID DeviceGuid;
+ NTSTATUS Status;
+ PLIST_ENTRY Entry;
+ PBUS_INSTANCE_ENTRY CurEntry;
+ UNICODE_STRING DeviceName;
+
+ /* initialize interface string */
+ RtlInitUnicodeString(&DeviceName, InterfaceString);
+
+ /* first convert device name to guid */
+ RtlGUIDFromString(&DeviceName, &DeviceGuid);
+
+ /* check if the device is already present */
+ Entry = DeviceEntry->DeviceInterfaceList.Flink;
+
+ while(Entry != &DeviceEntry->DeviceInterfaceList)
+ {
+ /* get offset */
+ CurEntry = (PBUS_INSTANCE_ENTRY)CONTAINING_RECORD(Entry, BUS_INSTANCE_ENTRY,
Entry);
+
+ if (IsEqualGUIDAligned(&CurEntry->InterfaceGuid, &DeviceGuid))
+ {
+ /* entry already exists */
+ return STATUS_SUCCESS;
+ }
+
+ /* move to next entry */
+ Entry = Entry->Flink;
+ }
+
+ /* time to allocate new entry */
+ CurEntry = (PBUS_INSTANCE_ENTRY)AllocateItem(NonPagedPool,
sizeof(BUS_INSTANCE_ENTRY));
+
+ if (!CurEntry)
+ {
+ /* no memory */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* store guid */
+ RtlMoveMemory(&CurEntry->InterfaceGuid, &DeviceGuid, sizeof(GUID));
+
+ /* now register the association */
+ Status = KspRegisterDeviceAssociation(BusDeviceExtension, DeviceEntry, CurEntry);
+
+ /* check for success */
+ if (NT_SUCCESS(Status))
+ {
+ /* store entry */
+ InsertTailList(&DeviceEntry->DeviceInterfaceList,
&CurEntry->Entry);
+ }
+ else
+ {
+ /* failed to associated device */
+ FreeItem(CurEntry);
+ }
+
+ /* done */
+ return Status;
+}
+
+NTSTATUS
+NTAPI
+KspCreateDeviceReference(
+ IN PHANDLE hKey,
+ IN PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension,
+ IN PBUS_DEVICE_ENTRY DummyEntry,
+ IN LPWSTR DeviceCategory,
+ IN LPWSTR ReferenceString)
+{
+ LPWSTR DeviceName;
+ ULONG Length;
+ PLIST_ENTRY Entry;
+ PBUS_DEVICE_ENTRY DeviceEntry = NULL; /* GCC warning */
+ BOOLEAN ItemExists = FALSE;
+ UNICODE_STRING String;
+ NTSTATUS Status;
+
+ /* first construct device name & reference guid */
+ Length = wcslen(DeviceCategory) + wcslen(ReferenceString);
+
+ /* append '&' and null byte */
+ Length += 2;
+
+ /* allocate device name */
+ DeviceName = AllocateItem(NonPagedPool, Length * sizeof(WCHAR));
+
+ if (!DeviceName)
+ {
+ /* not enough memory */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* construct device name */
+ wcscpy(DeviceName, DeviceCategory);
+ wcscat(DeviceName, L"&");
+ wcscat(DeviceName, ReferenceString);
+
+ /* scan list and check if it is already present */
+ Entry = BusDeviceExtension->Common.Entry.Flink;
+
+ while(Entry != &BusDeviceExtension->Common.Entry)
+ {
+ /* get real offset */
+ DeviceEntry = (PBUS_DEVICE_ENTRY)CONTAINING_RECORD(Entry, BUS_DEVICE_ENTRY,
Entry);
+
+ /* check if name matches */
+ if (!wcsicmp(DeviceEntry->DeviceName, DeviceName))
+ {
+ /* item already exists */
+ ItemExists = TRUE;
+ break;
+ }
+
+ /* move to next entry */
+ Entry = Entry->Flink;
+ }
+
+ if (!ItemExists)
+ {
+ /* allocate new device entry */
+ DeviceEntry = AllocateItem(NonPagedPool, sizeof(BUS_DEVICE_ENTRY));
+ if (!DeviceEntry)
+ {
+ /* no memory */
+ FreeItem(DeviceName);
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* initialize device entry */
+ InitializeListHead(&DeviceEntry->DeviceInterfaceList);
+ InitializeListHead(&DeviceEntry->IrpPendingList);
+
+ /* copy device guid */
+ RtlInitUnicodeString(&String, ReferenceString);
+ RtlGUIDFromString(&String, &DeviceEntry->DeviceGuid);
+
+ /* copy device names */
+ DeviceEntry->DeviceName = DeviceName;
+ DeviceEntry->Instance = (DeviceName + wcslen(DeviceCategory) + 1);
+
+ /* copy name */
+ DeviceEntry->BusId = AllocateItem(NonPagedPool, (wcslen(DeviceCategory) + 1) *
sizeof(WCHAR));
+ if (!DeviceEntry->BusId)
+ {
+ /* no memory */
+ FreeItem(DeviceName);
+ FreeItem(DeviceEntry);
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+ wcscpy(DeviceEntry->BusId, DeviceCategory);
+ }
+
+ /* now enumerate the devices */
+ Status = KspEnumerateBusRegistryKeys(hKey, ReferenceString,
KspCreateDeviceAssociation, BusDeviceExtension, DeviceEntry);
+
+ /* check if list is empty */
+ if (IsListEmpty(&DeviceEntry->DeviceInterfaceList))
+ {
+ /* invalid device settings */
+ FreeItem(DeviceEntry->BusId);
+ FreeItem(DeviceEntry->DeviceName);
+ FreeItem(DeviceEntry);
+
+ ASSERT(ItemExists == FALSE);
+
+ return STATUS_INVALID_DEVICE_STATE;
+ }
+
+ /* check if enumeration failed */
+ if (!NT_SUCCESS(Status))
+ {
+ /* failed */
+ KspRemoveDeviceAssociations(DeviceEntry);
+ FreeItem(DeviceEntry->BusId);
+ FreeItem(DeviceEntry->DeviceName);
+ FreeItem(DeviceEntry);
+
+ ASSERT(ItemExists == FALSE);
+
+ /* done */
+ return Status;
+ }
+
+ /* successfully initialized entry */
+ InsertTailList(&BusDeviceExtension->Common.Entry,
&DeviceEntry->Entry);
+
+ /* done */
+ return Status;
+}
+
+NTSTATUS
+NTAPI
+KspCreateDeviceReferenceTrampoline(
+ IN PHANDLE hKey,
+ IN PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension,
+ IN PBUS_DEVICE_ENTRY DummyEntry,
+ IN LPWSTR DeviceCategory,
+ IN LPWSTR ReferenceString)
+{
+ return KspEnumerateBusRegistryKeys(hKey, ReferenceString, KspCreateDeviceReference,
BusDeviceExtension, DummyEntry);
+}
+
+
+NTSTATUS
+KspOpenBusRegistryKey(
+ IN PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension,
+ OUT PHANDLE hKey)
+{
+ OBJECT_ATTRIBUTES ObjectAttributes;
+
+ /* initialize object attributes */
+ InitializeObjectAttributes(&ObjectAttributes,
&BusDeviceExtension->ServicePath, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, NULL,
NULL);
+
+ return ZwCreateKey(hKey, GENERIC_READ | GENERIC_WRITE, &ObjectAttributes, 0,
NULL, 0, NULL);
+}
+
+NTSTATUS
+KspScanBus(
+ IN PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension)
+{
+ HANDLE hKey;
+ NTSTATUS Status;
+
+ /* first open key */
+ Status = KspOpenBusRegistryKey(BusDeviceExtension, &hKey);
+
+ /* check for success */
+ if (!NT_SUCCESS(Status))
+ {
+ /* no success */
+
+ return Status;
+ }
+
+ /* TODO clear reference marks */
+
+ /* construct device entries */
+ Status = KspEnumerateBusRegistryKeys(hKey, NULL, KspCreateDeviceReferenceTrampoline,
BusDeviceExtension, NULL);
+
+ /* TODO: delete unreferenced devices */
+
+ /* close handle */
+ ZwClose(hKey);
+
+ /* done */
+ return Status;
+}
+
+
+NTSTATUS
+NTAPI
+KspBusQueryReferenceString(
+ IN PVOID Context,
+ IN OUT PWCHAR *String)
+{
+ LPWSTR Name;
+ ULONG Length;
+ PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension = (PBUS_ENUM_DEVICE_EXTENSION)Context;
+
+ /* sanity checks */
+ ASSERT(BusDeviceExtension);
+ ASSERT(BusDeviceExtension->BusIdentifier);
+
+ /* calculate length */
+ Length = wcslen(BusDeviceExtension->BusIdentifier) + 1;
+
+ /* allocate buffer */
+ Name = AllocateItem(PagedPool, Length * sizeof(WCHAR));
+
+ if (!Name)
+ {
+ /* failed to allocate buffer */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* copy buffer */
+ wcscpy(Name, BusDeviceExtension->BusIdentifier);
+
+ /* store result */
+ *String = Name;
+
+ /* done */
+ return STATUS_SUCCESS;
+}
+
+VOID
+NTAPI
+KspBusDeviceReference(
+ IN PVOID Context)
+{
+ PCOMMON_DEVICE_EXTENSION ChildDeviceExtension = (PCOMMON_DEVICE_EXTENSION)Context;
+
+ /* reference count */
+ InterlockedIncrement((PLONG)&ChildDeviceExtension->DeviceReferenceCount);
+}
+
+VOID
+NTAPI
+KspBusDeviceDereference(
+ IN PVOID Context)
+{
+ PCOMMON_DEVICE_EXTENSION ChildDeviceExtension = (PCOMMON_DEVICE_EXTENSION)Context;
+
+ /* reference count */
+ InterlockedDecrement((PLONG)&ChildDeviceExtension->DeviceReferenceCount);
+}
+
+VOID
+NTAPI
+KspBusReferenceDeviceObject(
+ IN PVOID Context)
+{
+ PCOMMON_DEVICE_EXTENSION ChildDeviceExtension = (PCOMMON_DEVICE_EXTENSION)Context;
+
+ /* reference count */
+
InterlockedIncrement((PLONG)&ChildDeviceExtension->DeviceObjectReferenceCount);
+}
+
+VOID
+NTAPI
+KspBusDereferenceDeviceObject(
+ IN PVOID Context)
+{
+ PCOMMON_DEVICE_EXTENSION ChildDeviceExtension = (PCOMMON_DEVICE_EXTENSION)Context;
+
+ /* reference count */
+
InterlockedDecrement((PLONG)&ChildDeviceExtension->DeviceObjectReferenceCount);
+}
+
+NTSTATUS
+KspQueryBusDeviceInterface(
+ IN PIRP Irp,
+ IN PCOMMON_DEVICE_EXTENSION ChildDeviceExtension)
+{
+ PBUS_INTERFACE_SWENUM Interface;
+ PIO_STACK_LOCATION IoStack;
+
+ /* get current irp stack location */
+ IoStack = IoGetCurrentIrpStackLocation(Irp);
+
+ /* sanity checks */
+ ASSERT(IoStack->Parameters.QueryInterface.Size == sizeof(BUS_INTERFACE_SWENUM));
+ ASSERT(IoStack->Parameters.QueryInterface.Interface);
+
+ /* fill in interface */
+ Interface = (PBUS_INTERFACE_SWENUM)IoStack->Parameters.QueryInterface.Interface;
+ Interface->Interface.Size = sizeof(BUS_INTERFACE_SWENUM);
+ Interface->Interface.Version = BUS_INTERFACE_SWENUM_VERSION;
+ Interface->Interface.Context = ChildDeviceExtension;
+ Interface->Interface.InterfaceReference = KspBusDeviceReference;
+ Interface->Interface.InterfaceDereference = KspBusDeviceDereference;
+ Interface->ReferenceDeviceObject = KspBusReferenceDeviceObject;
+ Interface->DereferenceDeviceObject = KspBusDereferenceDeviceObject;
+ Interface->QueryReferenceString = KspBusQueryReferenceString;
+
+ return STATUS_SUCCESS;
+}
+
+NTSTATUS
+KspEnableBusDeviceInterface(
+ PBUS_DEVICE_ENTRY DeviceEntry,
+ BOOLEAN bEnable)
+{
+ PLIST_ENTRY Entry;
+ PBUS_INSTANCE_ENTRY InstanceEntry;
+ NTSTATUS Status = STATUS_SUCCESS;
+
+ /* enable now all interfaces */
+ Entry = DeviceEntry->DeviceInterfaceList.Flink;
+
+ while(Entry != &DeviceEntry->DeviceInterfaceList)
+ {
+ /* get bus instance entry */
+ InstanceEntry = (PBUS_INSTANCE_ENTRY)CONTAINING_RECORD(Entry, BUS_INSTANCE_ENTRY,
Entry);
+
+ /* set interface state */
+ Status = IoSetDeviceInterfaceState(&InstanceEntry->SymbolicLink,
bEnable);
+
+ if (!NT_SUCCESS(Status))
+ {
+ /* failed to set interface */
+ break;
+ }
+
+ /* move to next entry */
+ Entry = Entry->Flink;
+ }
+
+ /* done */
+ return Status;
+}
+
+NTSTATUS
+KspDoReparseForIrp(
+ PIRP Irp,
+ PBUS_DEVICE_ENTRY DeviceEntry)
+{
+ ULONG Length;
+ LPWSTR Buffer;
+ PIO_STACK_LOCATION IoStack;
+
+ /* get stack location */
+ IoStack = IoGetCurrentIrpStackLocation(Irp);
+
+ /* sanity checks */
+ ASSERT(DeviceEntry->PDODeviceName);
+ ASSERT(DeviceEntry->Instance);
+ ASSERT(IoStack->FileObject);
+ ASSERT(IoStack->FileObject->FileName.Buffer);
+
+ /* calculate length */
+ Length = wcslen(DeviceEntry->PDODeviceName);
+ Length += wcslen(DeviceEntry->Instance);
+
+ /* zero byte and '\\' */
+ Length += 2;
+
+ /* allocate buffer */
+ Buffer = AllocateItem(PagedPool, Length * sizeof(WCHAR));
+ if (!Buffer)
+ {
+ /* no resources */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* construct buffer */
+ wcscpy(Buffer, DeviceEntry->PDODeviceName);
+ wcscat(Buffer, L"\\");
+ wcscat(Buffer, DeviceEntry->Instance);
+
+ /* free old file name */
+ ExFreePool(IoStack->FileObject->FileName.Buffer);
+
+ /* store new file name */
+ RtlInitUnicodeString(&IoStack->FileObject->FileName, Buffer);
+
+ /* done */
+ return STATUS_REPARSE;
+}
+
+VOID
+KspCompletePendingIrps(
+ IN PBUS_DEVICE_ENTRY DeviceEntry,
+ IN OUT NTSTATUS ResultCode)
+{
+ PLIST_ENTRY Entry;
+ PIRP Irp;
+ NTSTATUS Status;
+
+ /* go through list */
+
+ while(!IsListEmpty(&DeviceEntry->IrpPendingList))
+ {
+ /* get first entry */
+ Entry = RemoveHeadList(&DeviceEntry->IrpPendingList);
+
+ /* get irp */
+ Irp = (PIRP)CONTAINING_RECORD(Entry, IRP, Tail.Overlay.ListEntry);
+
+ if (ResultCode == STATUS_REPARSE)
+ {
+ /* construct reparse information */
+ Status = KspDoReparseForIrp(Irp, DeviceEntry);
+ }
+ else
+ {
+ /* use default code */
+ Status = ResultCode;
+ }
+
+ /* store result code */
+ Irp->IoStatus.Status = Status;
+
+ DPRINT1("Completing IRP %p\n", Irp);
+
+ /* complete the request */
+ IoCompleteRequest(Irp, IO_NO_INCREMENT);
+ }
+}
+
+
+
+NTSTATUS
+KspStartBusDevice(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PCOMMON_DEVICE_EXTENSION ChildDeviceExtension,
+ IN PIRP Irp)
+{
+ WCHAR PDOName[256];
+ NTSTATUS Status;
+ ULONG ResultLength;
+ LPWSTR Name;
+ PBUS_DEVICE_ENTRY DeviceEntry;
+
+ /* FIXME handle pending remove */
+
+ /* get full device name */
+ Status = IoGetDeviceProperty(DeviceObject, DevicePropertyPhysicalDeviceObjectName,
sizeof(PDOName), (PVOID)PDOName, &ResultLength);
+
+ if (!NT_SUCCESS(Status))
+ {
+ /* failed to get device name */
+ return Status;
+ }
+
+ /* allocate device name buffer */
+ Name = AllocateItem(PagedPool, ResultLength);
+ if (!Name)
+ {
+ /* no memory */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* copy name */
+ wcscpy(Name, PDOName);
+
+ /* TODO: time stamp creation time */
+
+ /* get device entry */
+ DeviceEntry = (PBUS_DEVICE_ENTRY)ChildDeviceExtension->DeviceEntry;
+
+ /* sanity check */
+ ASSERT(DeviceEntry);
+
+ /* store device name */
+ DeviceEntry->PDODeviceName = Name;
+
+ /* mark device as started */
+ DeviceEntry->DeviceState = Started;
+
+ DPRINT1("KspStartBusDevice Name %S Started\n", Name);
+
+ /* now complete pending i/o */
+ KspCompletePendingIrps(DeviceEntry, STATUS_REPARSE);
+
+ /* done */
+ return STATUS_SUCCESS;
+}
+
+NTSTATUS
+KspQueryBusDeviceCapabilities(
+ IN PCOMMON_DEVICE_EXTENSION ChildDeviceExtension,
+ IN PIRP Irp)
+{
+ PDEVICE_CAPABILITIES Capabilities;
+ PIO_STACK_LOCATION IoStack;
+
+ /* get stack location */
+ IoStack = IoGetCurrentIrpStackLocation(Irp);
+
+ /* get capabilities */
+ Capabilities = IoStack->Parameters.DeviceCapabilities.Capabilities;
+
+ /* setup capabilities */
+ Capabilities->UniqueID = TRUE;
+ Capabilities->SilentInstall = TRUE;
+ Capabilities->SurpriseRemovalOK = TRUE;
+ Capabilities->Address = 0;
+ Capabilities->UINumber = 0;
+ Capabilities->SystemWake = PowerSystemWorking; /* FIXME common device extension
*/
+ Capabilities->DeviceWake = PowerDeviceD0;
+
+ /* done */
+ return STATUS_SUCCESS;
+}
+
+NTSTATUS
+KspQueryBusInformation(
+ IN PCOMMON_DEVICE_EXTENSION ChildDeviceExtension,
+ IN PIRP Irp)
+{
+ PPNP_BUS_INFORMATION BusInformation;
+
+ /* allocate bus information */
+ BusInformation = (PPNP_BUS_INFORMATION)AllocateItem(PagedPool,
sizeof(PNP_BUS_INFORMATION));
+
+ if (!BusInformation)
+ {
+ /* no memory */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* return info */
+ BusInformation->BusNumber = 0;
+ BusInformation->LegacyBusType = InterfaceTypeUndefined;
+ RtlMoveMemory(&BusInformation->BusTypeGuid, &KSMEDIUMSETID_Standard,
sizeof(GUID));
+
+ /* store result */
+ Irp->IoStatus.Information = (ULONG_PTR)BusInformation;
+
+ /* done */
+ return STATUS_SUCCESS;
+}
+
+NTSTATUS
+KspQueryBusDevicePnpState(
+ IN PCOMMON_DEVICE_EXTENSION ChildDeviceExtension,
+ IN PIRP Irp)
+{
+ /* set device flags */
+ Irp->IoStatus.Information = PNP_DEVICE_DONT_DISPLAY_IN_UI |
PNP_DEVICE_NOT_DISABLEABLE;
+
+ /* done */
+ return STATUS_SUCCESS;
+}
+
+NTSTATUS
+KspQueryId(
+ IN PCOMMON_DEVICE_EXTENSION ChildDeviceExtension,
+ IN PIRP Irp)
+{
+ PIO_STACK_LOCATION IoStack;
+ PBUS_DEVICE_ENTRY DeviceEntry;
+ PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
+ LPWSTR Name;
+ ULONG Length;
+
+ /* get current irp stack location */
+ IoStack = IoGetCurrentIrpStackLocation(Irp);
+
+ if (IoStack->Parameters.QueryId.IdType == BusQueryInstanceID)
+ {
+ /* get device entry */
+ DeviceEntry = (PBUS_DEVICE_ENTRY) ChildDeviceExtension->DeviceEntry;
+
+ /* sanity check */
+ ASSERT(DeviceEntry);
+ ASSERT(DeviceEntry->Instance);
+
+ /* calculate length */
+ Length = wcslen(DeviceEntry->Instance) + 1;
+
+ /* allocate buffer */
+ Name = AllocateItem(PagedPool, Length * sizeof(WCHAR));
+
+ if (!Name)
+ {
+ /* failed to allocate buffer */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* copy buffer */
+ wcscpy(Name, DeviceEntry->Instance);
+
+ /* store result */
+ Irp->IoStatus.Information = (ULONG_PTR)Name;
+
+ /* done */
+ return STATUS_SUCCESS;
+ }
+ else if (IoStack->Parameters.QueryId.IdType == BusQueryDeviceID ||
+ IoStack->Parameters.QueryId.IdType == BusQueryHardwareIDs)
+ {
+ /* get device entry */
+ DeviceEntry = (PBUS_DEVICE_ENTRY) ChildDeviceExtension->DeviceEntry;
+
+ /* get bus device extension */
+ BusDeviceExtension = (PBUS_ENUM_DEVICE_EXTENSION)
ChildDeviceExtension->BusDeviceExtension;
+
+ /* sanity check */
+ ASSERT(DeviceEntry);
+ ASSERT(DeviceEntry->BusId);
+ ASSERT(BusDeviceExtension);
+ ASSERT(BusDeviceExtension->BusIdentifier);
+
+ /* calculate length */
+ Length = wcslen(BusDeviceExtension->BusIdentifier);
+ Length += wcslen(DeviceEntry->BusId);
+
+ /* extra length for '\\' and zero byte */
+ Length += 2;
+
+ /* allocate buffer */
+ Name = ExAllocatePool(PagedPool, Length * sizeof(WCHAR));
+ if (!Name)
+ {
+ /* failed to allocate buffer */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* construct id */
+ wcscpy(Name, BusDeviceExtension->BusIdentifier);
+ wcscat(Name, L"\\");
+ wcscat(Name, DeviceEntry->BusId);
+
+ /* store result */
+ Irp->IoStatus.Information = (ULONG_PTR)Name;
+
+ /* done */
+ return STATUS_SUCCESS;
+ }
+ else
+ {
+ /* other ids are not supported */
+ DPRINT1("Not Supported ID Type %x\n",
IoStack->Parameters.QueryId.IdType);
+ return STATUS_NOT_SUPPORTED;
+ }
+}
+
+NTSTATUS
+KspInstallInterface(
+ IN PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension,
+ IN PSWENUM_INSTALL_INTERFACE InstallInterface)
+{
+ ULONG Length, Index;
+ UNICODE_STRING DeviceString, InterfaceString, ReferenceString;
+ HANDLE hKey, hDeviceKey, hInterfaceKey, hReferenceKey;
+ NTSTATUS Status;
+ OBJECT_ATTRIBUTES ObjectAttributes;
+
+ /* calculate length */
+ Length = wcslen(InstallInterface->ReferenceString);
+
+ /* check for invalid characters */
+ for(Index = 0; Index < Length; Index++)
+ {
+ if (InstallInterface->ReferenceString[Index] <= L' ' ||
+ InstallInterface->ReferenceString[Index] > L'~' ||
+ InstallInterface->ReferenceString[Index] == L',' ||
+ InstallInterface->ReferenceString[Index] == L'\\' ||
+ InstallInterface->ReferenceString[Index] == L'/')
+ {
+ /* invalid character */
+ return STATUS_INVALID_PARAMETER;
+ }
+ }
+
+ /* open bus key */
+ Status = KspOpenBusRegistryKey(BusDeviceExtension, &hKey);
+ if (NT_SUCCESS(Status))
+ {
+ /* convert device guid to string */
+ Status = RtlStringFromGUID(&InstallInterface->DeviceId,
&DeviceString);
+ if (NT_SUCCESS(Status))
+ {
+ /* initialize object attributes */
+ InitializeObjectAttributes(&ObjectAttributes, &DeviceString,
OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, hKey, NULL);
+
+ /* construct device key */
+ Status = ZwCreateKey(&hDeviceKey, GENERIC_WRITE, &ObjectAttributes,
0, NULL, 0, NULL);
+ if (NT_SUCCESS(Status))
+ {
+ /* initialize reference string */
+ RtlInitUnicodeString(&ReferenceString,
InstallInterface->ReferenceString);
+
+ /* initialize object attributes */
+ InitializeObjectAttributes(&ObjectAttributes, &ReferenceString,
OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, hDeviceKey, NULL);
+
+ /* construct device key */
+ Status = ZwCreateKey(&hReferenceKey, GENERIC_WRITE,
&ObjectAttributes, 0, NULL, 0, NULL);
+ if (NT_SUCCESS(Status))
+ {
+ /* convert interface guid to string */
+ Status = RtlStringFromGUID(&InstallInterface->InterfaceId,
&InterfaceString);
+ if (NT_SUCCESS(Status))
+ {
+ /* initialize object attributes */
+ InitializeObjectAttributes(&ObjectAttributes,
&InterfaceString, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, hReferenceKey, NULL);
+
+ /* construct device key */
+ Status = ZwCreateKey(&hInterfaceKey, GENERIC_WRITE,
&ObjectAttributes, 0, NULL, 0, NULL);
+ if (NT_SUCCESS(Status))
+ {
+ /* close key */
+ ZwClose(hInterfaceKey);
+ }
+ /* free interface string */
+ RtlFreeUnicodeString(&InterfaceString);
+ }
+ /* close reference key */
+ ZwClose(hReferenceKey);
+ }
+ /* close device key */
+ ZwClose(hDeviceKey);
+ }
+ /* free device string */
+ RtlFreeUnicodeString(&DeviceString);
+ }
+ /* close bus key */
+ ZwClose(hKey);
+ }
+
+ /* done */
+ return Status;
+ }
+
+VOID
+NTAPI
+KspInstallBusEnumInterface(
+ IN PVOID Ctx)
+{
+ PIO_STACK_LOCATION IoStack;
+ NTSTATUS Status;
+ PLIST_ENTRY Entry;
+ PBUS_DEVICE_ENTRY DeviceEntry;
+ PSWENUM_INSTALL_INTERFACE InstallInterface;
+ PBUS_INSTALL_ENUM_CONTEXT Context = (PBUS_INSTALL_ENUM_CONTEXT)Ctx;
+
+ /* get current irp stack location */
+ IoStack = IoGetCurrentIrpStackLocation(Context->Irp);
+
+ /* get install request */
+ InstallInterface =
(PSWENUM_INSTALL_INTERFACE)IoStack->Parameters.DeviceIoControl.Type3InputBuffer;
+
+ if (IoStack->Parameters.DeviceIoControl.InputBufferLength <
sizeof(SWENUM_INSTALL_INTERFACE))
+ {
+ /* buffer too small */
+ Context->Status = STATUS_INVALID_PARAMETER;
+
+ /* signal completion */
+ KeSetEvent(&Context->Event, 0, FALSE);
+
+ /* done */
+ return;
+ }
+
+ /* FIXME locks */
+
+ /* now install the interface */
+ Status = KspInstallInterface(Context->BusDeviceExtension, InstallInterface);
+ if (!NT_SUCCESS(Status))
+ {
+ /* failed to install interface */
+ Context->Status = Status;
+
+ /* signal completion */
+ KeSetEvent(&Context->Event, 0, FALSE);
+
+ /* done */
+ return;
+ }
+
+ /* now iterate all device entries */
+ Entry = Context->BusDeviceExtension->Common.Entry.Flink;
+ while(Entry != &Context->BusDeviceExtension->Common.Entry)
+ {
+ /* get device entry */
+ DeviceEntry = (PBUS_DEVICE_ENTRY)CONTAINING_RECORD(Entry, BUS_DEVICE_ENTRY,
Entry);
+
+ if (IsEqualGUIDAligned(&DeviceEntry->DeviceGuid,
&InstallInterface->DeviceId) &&
+ !wcsicmp(DeviceEntry->Instance, InstallInterface->ReferenceString))
+ {
+ if (!DeviceEntry->PDO)
+ {
+ /* create pdo */
+ Status = KspCreatePDO(Context->BusDeviceExtension, DeviceEntry,
&DeviceEntry->PDO);
+
+ /* done */
+ break;
+ }
+ }
+ }
+
+ /* signal that bus driver relations has changed */
+ IoInvalidateDeviceRelations(Context->BusDeviceExtension->PhysicalDeviceObject,
BusRelations);
+
+ /* update status */
+ Context->Status = Status;
+
+ /* signal completion */
+ KeSetEvent(&Context->Event, 0, FALSE);
+}
+
+
+VOID
+NTAPI
+KspBusWorkerRoutine(
+ IN PVOID Parameter)
+{
+ /* TODO: implement sweeping */
+ UNIMPLEMENTED
+}
+
+VOID
+NTAPI
+KspBusDpcRoutine(
+ IN PKDPC Dpc,
+ IN PVOID DeferredContext OPTIONAL,
+ IN PVOID SystemArgument1 OPTIONAL,
+ IN PVOID SystemArgument2 OPTIONAL)
+{
+ /* get device extension */
+ PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension =
(PBUS_ENUM_DEVICE_EXTENSION)DeferredContext;
+
+ /* queue the item */
+ ExQueueWorkItem(&BusDeviceExtension->WorkItem, DelayedWorkQueue);
+}
+
+VOID
+NTAPI
+KspRemoveBusInterface(
+ PVOID Ctx)
+{
+ PBUS_INSTALL_ENUM_CONTEXT Context =(PBUS_INSTALL_ENUM_CONTEXT)Ctx;
+
+ /* TODO
+ * get SWENUM_INSTALL_INTERFACE struct
+ * open device key and delete the keys
+ */
+
+ UNIMPLEMENTED
+
+ /* set status */
+ Context->Status = STATUS_NOT_IMPLEMENTED;
+
+
+ /* signal completion */
+ KeSetEvent(&Context->Event, IO_NO_INCREMENT, FALSE);
+}
+
+NTSTATUS
+KspQueryBusRelations(
+ IN PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension,
+ IN PIRP Irp)
+{
+ PDEVICE_RELATIONS DeviceRelations;
+ PLIST_ENTRY Entry;
+ PBUS_DEVICE_ENTRY DeviceEntry;
+ ULONG Count = 0, Length;
+
+
+ /* FIXME locks */
+
+ /* first scan all device entries */
+ Entry = BusDeviceExtension->Common.Entry.Flink;
+
+ while(Entry != &BusDeviceExtension->Common.Entry)
+ {
+ /* get offset to device entry */
+ DeviceEntry = (PBUS_DEVICE_ENTRY)CONTAINING_RECORD(Entry, BUS_DEVICE_ENTRY,
Entry);
+
+ /* is there a pdo yet */
+ if (DeviceEntry->PDO)
+ {
+ /* increment count */
+ Count++;
+ }
+
+ /* move to next entry */
+ Entry = Entry->Flink;
+ }
+
+ /* calculate length */
+ Length = sizeof(DEVICE_RELATIONS) + (Count > 1 ? sizeof(PDEVICE_OBJECT) *
(Count-1) : 0);
+
+ /* allocate device relations */
+ DeviceRelations = (PDEVICE_RELATIONS)AllocateItem(NonPagedPool, Length);
+
+ if (!DeviceRelations)
+ {
+ /* not enough memory */
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* rescan device entries */
+ Entry = BusDeviceExtension->Common.Entry.Flink;
+
+ while(Entry != &BusDeviceExtension->Common.Entry)
+ {
+ /* get offset to device entry */
+ DeviceEntry = (PBUS_DEVICE_ENTRY)CONTAINING_RECORD(Entry, BUS_DEVICE_ENTRY,
Entry);
+
+ /* is there a pdo yet */
+ if (DeviceEntry->PDO)
+ {
+ /* store pdo */
+ DeviceRelations->Objects[DeviceRelations->Count] =
DeviceEntry->PDO;
+
+ /* reference device object */
+ ObReferenceObject(DeviceEntry->PDO);
+
+ /* increment pdo count */
+ DeviceRelations->Count++;
+ }
+
+ /* move to next entry */
+ Entry = Entry->Flink;
+ }
+
+ /* FIXME handle existing device relations */
+ ASSERT(Irp->IoStatus.Information == 0);
+
+ /* store device relations */
+ Irp->IoStatus.Information = (ULONG_PTR)DeviceRelations;
+
+ /* done */
+ return STATUS_SUCCESS;
+}
+
+//------------------------------------------------------------------------------------
+
+/*
+ @implemented
+*/
+
+KSDDKAPI
+NTSTATUS
+NTAPI
+KsGetBusEnumIdentifier(
+ IN PIRP Irp)
+{
+ PDEV_EXTENSION DeviceExtension;
+ PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
+ PIO_STACK_LOCATION IoStack;
+ ULONG Length;
+ NTSTATUS Status;
+ LPWSTR Buffer;
+
+ DPRINT1("KsGetBusEnumIdentifier\n");
+
+ /* get stack location */
+ IoStack = IoGetCurrentIrpStackLocation(Irp);
+
+ /* sanity checks */
+ ASSERT(IoStack->DeviceObject);
+ ASSERT(IoStack->DeviceObject->DeviceExtension);
+
+ /* get device extension */
+ DeviceExtension = (PDEV_EXTENSION)IoStack->DeviceObject->DeviceExtension;
+
+ /* get bus device extension */
+ BusDeviceExtension =
(PBUS_ENUM_DEVICE_EXTENSION)DeviceExtension->Ext->BusDeviceExtension;
+
+ /* sanity checks */
+ ASSERT(BusDeviceExtension);
+ ASSERT(BusDeviceExtension->Common.IsBus);
+
+ if (!BusDeviceExtension)
+ {
+ /* invalid parameter */
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* get length */
+ Length = (wcslen(BusDeviceExtension->BusIdentifier)+1) * sizeof(WCHAR);
+
+ /* is there an output buffer provided */
+ if (IoStack->Parameters.DeviceIoControl.InputBufferLength)
+ {
+ if (Length > IoStack->Parameters.DeviceIoControl.InputBufferLength)
+ {
+ /* buffer is too small */
+ return STATUS_BUFFER_TOO_SMALL;
+ }
+
+ /* now allocate buffer */
+ Buffer = AllocateItem(NonPagedPool, Length);
+ if (!Buffer)
+ {
+ /* no memory */
+ Status = STATUS_INSUFFICIENT_RESOURCES;
+ }
+ else
+ {
+ /* copy bus identifier */
+ wcscpy(Buffer, BusDeviceExtension->BusIdentifier);
+
+ /* store buffer */
+ Irp->AssociatedIrp.SystemBuffer = Buffer;
+
+ /* set flag that buffer gets copied back */
+ Irp->Flags |= IRP_BUFFERED_IO | IRP_DEALLOCATE_BUFFER |
IRP_INPUT_OPERATION;
+
+ /* done */
+ Status = STATUS_SUCCESS;
+ }
+ }
+ else
+ {
+ /* no buffer provided */
+ Status = STATUS_BUFFER_OVERFLOW;
+ }
+
+ /* done */
+ return Status;
+}
+
+/*
+ @implemented
+*/
+KSDDKAPI
+NTSTATUS
+NTAPI
+KsGetBusEnumParentFDOFromChildPDO(
+ IN PDEVICE_OBJECT DeviceObject,
+ OUT PDEVICE_OBJECT *FunctionalDeviceObject)
+{
+ PDEV_EXTENSION DeviceExtension;
+
+ DPRINT1("KsGetBusEnumParentFDOFromChildPDO\n");
+
+ /* get device extension */
+ DeviceExtension = (PDEV_EXTENSION)DeviceObject->DeviceExtension;
+
+ /* check if this is child pdo */
+ if (DeviceExtension->Ext->IsBus == FALSE)
+ {
+ /* return bus device object */
+ *FunctionalDeviceObject =
DeviceExtension->Ext->BusDeviceExtension->BusDeviceObject;
+
+ /* done */
+ return STATUS_SUCCESS;
+ }
+
+ /* invalid parameter */
+ return STATUS_INVALID_PARAMETER;
+}
+
+
+/*
+ @implemented
+*/
+KSDDKAPI
+NTSTATUS
+NTAPI
+KsCreateBusEnumObject(
+ IN PWCHAR BusIdentifier,
+ IN PDEVICE_OBJECT BusDeviceObject,
+ IN PDEVICE_OBJECT PhysicalDeviceObject,
+ IN PDEVICE_OBJECT PnpDeviceObject OPTIONAL,
+ IN REFGUID InterfaceGuid OPTIONAL,
+ IN PWCHAR ServiceRelativePath OPTIONAL)
+{
+ ULONG Length;
+ NTSTATUS Status = STATUS_SUCCESS;
+ UNICODE_STRING ServiceKeyPath =
RTL_CONSTANT_STRING(L"\\REGISTRY\\MACHINE\\SYSTEM\\CurrentControlSet\\Services\\");
+ PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
+ PDEV_EXTENSION DeviceExtension;
+
+ DPRINT1("KsCreateBusEnumObject %S BusDeviceObject %p\n",
ServiceRelativePath, BusDeviceObject);
+
+ /* calculate sizeof bus enum device extension */
+ Length = wcslen(BusIdentifier) * sizeof(WCHAR);
+ Length += sizeof(BUS_ENUM_DEVICE_EXTENSION);
+
+ BusDeviceExtension = AllocateItem(NonPagedPool, Length);
+ if (!BusDeviceExtension)
+ {
+ /* not enough memory */
+
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ /* get device extension */
+ DeviceExtension = (PDEV_EXTENSION)BusDeviceObject->DeviceExtension;
+
+ DPRINT1("DeviceExtension %p BusDeviceExtension %p\n", DeviceExtension,
DeviceExtension->Ext);
+
+ /* store bus device extension */
+ DeviceExtension->Ext = (PCOMMON_DEVICE_EXTENSION)BusDeviceExtension;
+
+ DPRINT1("DeviceExtension %p BusDeviceExtension %p\n", DeviceExtension,
DeviceExtension->Ext);
+
+
+ /* zero device extension */
+ RtlZeroMemory(BusDeviceExtension, sizeof(BUS_ENUM_DEVICE_EXTENSION));
+
+ /* initialize bus device extension */
+ wcscpy(BusDeviceExtension->BusIdentifier, BusIdentifier);
+
+ /* allocate service path string */
+ Length = ServiceKeyPath.MaximumLength;
+ Length +=
BusDeviceObject->DriverObject->DriverExtension->ServiceKeyName.MaximumLength;
+
+ if (ServiceRelativePath)
+ {
+ /* relative path for devices */
+ Length += (wcslen(ServiceRelativePath) + 2) * sizeof(WCHAR);
+ }
+
+ BusDeviceExtension->ServicePath.Length = 0;
+ BusDeviceExtension->ServicePath.MaximumLength = Length;
+ BusDeviceExtension->ServicePath.Buffer = AllocateItem(NonPagedPool, Length);
+
+ if (!BusDeviceExtension->ServicePath.Buffer)
+ {
+ /* not enough memory */
+ FreeItem(BusDeviceExtension);
+
+ return STATUS_INSUFFICIENT_RESOURCES;
+ }
+
+ RtlAppendUnicodeStringToString(&BusDeviceExtension->ServicePath,
&ServiceKeyPath);
+ RtlAppendUnicodeStringToString(&BusDeviceExtension->ServicePath,
&BusDeviceObject->DriverObject->DriverExtension->ServiceKeyName);
+
+ if (ServiceRelativePath)
+ {
+ RtlAppendUnicodeToString(&BusDeviceExtension->ServicePath,
L"\\");
+ RtlAppendUnicodeToString(&BusDeviceExtension->ServicePath,
ServiceRelativePath);
+ }
+
+ if (InterfaceGuid)
+ {
+ /* register an device interface */
+ Status = IoRegisterDeviceInterface(PhysicalDeviceObject, InterfaceGuid, NULL,
&BusDeviceExtension->DeviceInterfaceLink);
+
+ /* check for success */
+ if (!NT_SUCCESS(Status))
+ {
+
+ FreeItem(BusDeviceExtension->ServicePath.Buffer);
+ FreeItem(BusDeviceExtension);
+ return Status;
+ }
+
+ /* now enable device interface */
+ Status =
IoSetDeviceInterfaceState(&BusDeviceExtension->DeviceInterfaceLink, TRUE);
+
+ if (!NT_SUCCESS(Status))
+ {
+ FreeItem(BusDeviceExtension->ServicePath.Buffer);
+ FreeItem(BusDeviceExtension);
+ return Status;
+ }
+ }
+
+ /* initialize common device extension */
+ BusDeviceExtension->Common.BusDeviceExtension = NULL;
+ BusDeviceExtension->Common.DeviceObjectReferenceCount = 1;
+ BusDeviceExtension->Common.DeviceReferenceCount = 1;
+ BusDeviceExtension->Common.IsBus = TRUE;
+ InitializeListHead(&BusDeviceExtension->Common.Entry);
+
+ /* store device objects */
+ BusDeviceExtension->BusDeviceObject = BusDeviceObject;
+ BusDeviceExtension->PhysicalDeviceObject = PhysicalDeviceObject;
+
+ /* initialize lock */
+ KeInitializeSpinLock(&BusDeviceExtension->Lock);
+
+ /* initialize timer */
+ KeInitializeTimer(&BusDeviceExtension->Timer);
+
+ /* initialize dpc */
+ KeInitializeDpc(&BusDeviceExtension->Dpc, KspBusDpcRoutine,
(PVOID)BusDeviceExtension);
+
+ /* initialize event */
+ KeInitializeEvent(&BusDeviceExtension->Event, SynchronizationEvent, FALSE);
+
+ /* initialize work item */
+ ExInitializeWorkItem(&BusDeviceExtension->WorkItem, KspBusWorkerRoutine,
(PVOID)BusDeviceExtension);
+
+ if (!PnpDeviceObject)
+ {
+ /* attach device */
+ BusDeviceExtension->PnpDeviceObject =
IoAttachDeviceToDeviceStack(BusDeviceObject, PhysicalDeviceObject);
+
+ if (!BusDeviceExtension->PnpDeviceObject)
+ {
+ /* failed to attach device */
+ if (BusDeviceExtension->DeviceInterfaceLink.Buffer)
+ {
+
IoSetDeviceInterfaceState(&BusDeviceExtension->DeviceInterfaceLink, FALSE);
+ RtlFreeUnicodeString(&BusDeviceExtension->DeviceInterfaceLink);
+ }
+
+ /* free device extension */
+ FreeItem(BusDeviceExtension->ServicePath.Buffer);
+ FreeItem(BusDeviceExtension);
+
+ return STATUS_DEVICE_REMOVED;
+ }
+
+ /* mark device as attached */
+ BusDeviceExtension->DeviceAttached = TRUE;
+ }
+ else
+ {
+ /* directly attach */
+ BusDeviceExtension->PnpDeviceObject = PnpDeviceObject;
+ }
+
+ /* now scan the bus */
+ Status = KspScanBus(BusDeviceExtension);
+
+ /* check for success */
+ if (!NT_SUCCESS(Status))
+ {
+ /* failed to scan bus */
+ if (BusDeviceExtension->DeviceInterfaceLink.Buffer)
+ {
+ IoSetDeviceInterfaceState(&BusDeviceExtension->DeviceInterfaceLink,
FALSE);
+ RtlFreeUnicodeString(&BusDeviceExtension->DeviceInterfaceLink);
+ }
+
+ if (BusDeviceExtension->DeviceAttached)
+ {
+ /* detach device */
+ IoDetachDevice(BusDeviceExtension->PnpDeviceObject);
+ }
+
+ /* free device extension */
+ FreeItem(BusDeviceExtension->ServicePath.Buffer);
+ FreeItem(BusDeviceExtension);
+ }
+
+ DPRINT1("KsCreateBusEnumObject cp %x\n", Status);
+ /* done */
+ return Status;
+}
+
+/*
+ @implemented
+*/
+KSDDKAPI
+NTSTATUS
+NTAPI
+KsGetBusEnumPnpDeviceObject(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN PDEVICE_OBJECT *PnpDeviceObject)
+{
+ PDEV_EXTENSION DeviceExtension;
+ PCOMMON_DEVICE_EXTENSION CommonDeviceExtension;
+ PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
+
+ DPRINT1("KsGetBusEnumPnpDeviceObject\n");
+
+ if (!DeviceObject->DeviceExtension)
+ {
+ /* invalid parameter */
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* get device extension */
+ DeviceExtension = (PDEV_EXTENSION)DeviceObject->DeviceExtension;
+
+ /* get common device extension */
+ CommonDeviceExtension = DeviceExtension->Ext;
+
+ if (!CommonDeviceExtension)
+ {
+ /* invalid parameter */
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ if (!CommonDeviceExtension->IsBus)
+ {
+ /* getting pnp device object is only supported for software bus device object */
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* sanity checks */
+ ASSERT(CommonDeviceExtension);
+ ASSERT(CommonDeviceExtension->IsBus);
+
+ /* cast to bus device extension */
+ BusDeviceExtension = (PBUS_ENUM_DEVICE_EXTENSION)CommonDeviceExtension;
+
+ /* store result */
+ *PnpDeviceObject = BusDeviceExtension->PnpDeviceObject;
+
+ /* done */
+ return STATUS_SUCCESS;
+}
+
+/*
+ @implemented
+*/
+KSDDKAPI
+NTSTATUS
+NTAPI
+KsInstallBusEnumInterface(
+ PIRP Irp)
+{
+ BUS_INSTALL_ENUM_CONTEXT Context;
+ KPROCESSOR_MODE Mode;
+ LUID luid;
+ PIO_STACK_LOCATION IoStack;
+ PDEV_EXTENSION DeviceExtension;
+ PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
+
+ DPRINT1("KsGetBusEnumPnpDeviceObject\n");
+
+ /* get current irp stack location */
+ IoStack = IoGetCurrentIrpStackLocation(Irp);
+
+ /* get previous mode */
+ Mode = ExGetPreviousMode();
+
+ /* convert to luid */
+ luid = RtlConvertUlongToLuid(SE_LOAD_DRIVER_PRIVILEGE);
+
+ /* perform access check */
+ if (!SeSinglePrivilegeCheck(luid, Mode))
+ {
+ /* insufficient privileges */
+ return STATUS_PRIVILEGE_NOT_HELD;
+ }
+
+ /* get device extension */
+ DeviceExtension = (PDEV_EXTENSION)IoStack->DeviceObject->DeviceExtension;
+
+ /* get bus device extension */
+ BusDeviceExtension = DeviceExtension->Ext->BusDeviceExtension;
+
+
+ /* initialize context */
+ Context.Irp = Irp;
+ KeInitializeEvent(&Context.Event, NotificationEvent, FALSE);
+ Context.BusDeviceExtension = BusDeviceExtension;
+ ExInitializeWorkItem(&Context.WorkItem, KspInstallBusEnumInterface,
(PVOID)&Context);
+
+ /* queue the work item */
+ ExQueueWorkItem(&Context.WorkItem, DelayedWorkQueue);
+
+ /* wait for completion */
+ KeWaitForSingleObject(&Context.Event, Executive, KernelMode, FALSE, NULL);
+
+ /* done */
+ return Context.Status;
+}
+
+/*
+ @implemented
+*/
+KSDDKAPI
+NTSTATUS
+NTAPI
+KsIsBusEnumChildDevice(
+ IN PDEVICE_OBJECT DeviceObject,
+ OUT PBOOLEAN ChildDevice)
+{
+ PDEV_EXTENSION DeviceExtension;
+ PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
+
+ DPRINT("KsIsBusEnumChildDevice %p\n", DeviceObject);
+
+ /* get device extension */
+ DeviceExtension = (PDEV_EXTENSION)DeviceObject->DeviceExtension;
+
+ /* get bus device extension */
+ BusDeviceExtension = (PBUS_ENUM_DEVICE_EXTENSION)DeviceExtension->Ext;
+
+ if (!BusDeviceExtension)
+ {
+ /* not a bus device */
+ return STATUS_INVALID_PARAMETER;
+ }
+
+ /* store result */
+ *ChildDevice = (BusDeviceExtension->Common.IsBus == FALSE);
+
+ return STATUS_SUCCESS;
+}
+
+/*
+ @implemented
+*/
+KSDDKAPI
+NTSTATUS
+NTAPI
+KsServiceBusEnumCreateRequest(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN OUT PIRP Irp)
+{
+ PLIST_ENTRY Entry;
+ PBUS_DEVICE_ENTRY DeviceEntry = NULL; /* fix gcc */
+ PIO_STACK_LOCATION IoStack;
+ BOOLEAN ItemExists;
+ PDEV_EXTENSION DeviceExtension;
+ PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
+ //PCOMMON_DEVICE_EXTENSION ChildDeviceExtension;
+ NTSTATUS Status;
+
+ DPRINT1("KsServiceBusEnumCreateRequest\n");
+
+ /* FIXME: locks */
+
+ /* get device extension */
+ DeviceExtension = (PDEV_EXTENSION)DeviceObject->DeviceExtension;
+
+ /* get bus device extension */
+ BusDeviceExtension = (PBUS_ENUM_DEVICE_EXTENSION)DeviceExtension->Ext;
+
+ /* get current irp stack location */
+ IoStack = IoGetCurrentIrpStackLocation(Irp);
+
+ /* sanity checks */
+ ASSERT(IoStack->FileObject);
+ ASSERT(IoStack->FileObject->FileName.Buffer);
+
+ /* scan list and check if it is already present */
+ Entry = BusDeviceExtension->Common.Entry.Flink;
+
+ while(Entry != &BusDeviceExtension->Common.Entry)
+ {
+ /* get real offset */
+ DeviceEntry = (PBUS_DEVICE_ENTRY)CONTAINING_RECORD(Entry, BUS_DEVICE_ENTRY,
Entry);
+
+ /* check if name matches */
+ if (!wcsicmp(DeviceEntry->DeviceName,
IoStack->FileObject->FileName.Buffer + 1))
+ {
+ /* item already exists */
+ ItemExists = TRUE;
+ break;
+ }
+
+ /* move to next entry */
+ Entry = Entry->Flink;
+ }
+
+ if (!ItemExists)
+ {
+ /* interface not registered */
+ DPRINT1("Interface %wZ not registered\n",
&IoStack->FileObject->FileName);
+ return STATUS_OBJECT_NAME_NOT_FOUND;
+ }
+
+ /* is there a pdo yet */
+ if (DeviceEntry->PDO)
+ {
+ if (DeviceEntry->DeviceState == Started)
+ {
+ /* issue reparse */
+ return KspDoReparseForIrp(Irp, DeviceEntry);
+ }
+
+ /* delay processing until pnp is finished with enumeration */
+ IoMarkIrpPending(Irp);
+
+ /* insert into irp pending list */
+ InsertTailList(&DeviceEntry->IrpPendingList,
&Irp->Tail.Overlay.ListEntry);
+
+ /* HACK */
+ IoInvalidateDeviceRelations(BusDeviceExtension->PhysicalDeviceObject,
BusRelations);
+
+
+ /* done for now */
+ return STATUS_PENDING;
+
+ }
+ else
+ {
+ /* time to create PDO */
+ Status = KspCreatePDO(BusDeviceExtension, DeviceEntry,
&DeviceEntry->PDO);
+
+ if (!NT_SUCCESS(Status))
+ {
+ /* failed to create PDO */
+ DPRINT1("KsServiceBusEnumCreateRequest failed to create PDO with
%x\n", Status);
+ return Status;
+ }
+
+ /* delay processing until pnp is finished with enumeration */
+ IoMarkIrpPending(Irp);
+
+ /* insert into irp pending list */
+ InsertTailList(&DeviceEntry->IrpPendingList,
&Irp->Tail.Overlay.ListEntry);
+
+ /* get current time */
+ KeQuerySystemTime(&DeviceEntry->TimeCreated);
+
+ /* invalidate device relations */
+ IoInvalidateDeviceRelations(BusDeviceExtension->PhysicalDeviceObject,
BusRelations);
+
+ /* done for now */
+ return STATUS_PENDING;
+ }
+}
+
+/*
+ @implemented
+*/
+KSDDKAPI
+NTSTATUS
+NTAPI
+KsServiceBusEnumPnpRequest(
+ IN PDEVICE_OBJECT DeviceObject,
+ IN OUT PIRP Irp)
+{
+ PDEV_EXTENSION DeviceExtension;
+ PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
+ PIO_STACK_LOCATION IoStack;
+
+ DPRINT1("KsServiceBusEnumPnpRequest %p\n", DeviceObject);
+
+ /* get device extension */
+ DeviceExtension = (PDEV_EXTENSION)DeviceObject->DeviceExtension;
+
+ /* get bus device extension */
+ BusDeviceExtension = (PBUS_ENUM_DEVICE_EXTENSION)DeviceExtension->Ext;
+
+ /* get current irp stack location */
+ IoStack = IoGetCurrentIrpStackLocation(Irp);
+
+ if (BusDeviceExtension->Common.IsBus)
+ {
+ if (IoStack->MinorFunction == IRP_MN_START_DEVICE)
+ {
+ /* no op for bus driver */
+ return STATUS_SUCCESS;
+ }
+ else if (IoStack->MinorFunction == IRP_MN_QUERY_DEVICE_RELATIONS)
+ {
+ /* handle bus device relations */
+ ASSERT(IoStack->Parameters.QueryDeviceRelations.Type == BusRelations);
+
+ return KspQueryBusRelations(BusDeviceExtension, Irp);
+ }
+ DPRINT1("KsServiceBusEnumPnpRequest BusObject MinorFunction %x\n",
IoStack->MinorFunction);
+ return STATUS_NOT_SUPPORTED;
+ }
+ else
+ {
+ if (IoStack->MinorFunction == IRP_MN_QUERY_ID)
+ {
+ /* query id */
+ return KspQueryId(&BusDeviceExtension->Common, Irp);
+ }
+ else if (IoStack->MinorFunction == IRP_MN_QUERY_BUS_INFORMATION)
+ {
+ /* query bus information */
+ return KspQueryBusInformation(&BusDeviceExtension->Common, Irp);
+ }
+ else if (IoStack->MinorFunction == IRP_MN_QUERY_RESOURCES)
+ {
+ /* no op */
+ return STATUS_SUCCESS;
+ }
+ else if (IoStack->MinorFunction == IRP_MN_QUERY_RESOURCE_REQUIREMENTS)
+ {
+ /* no op */
+ return STATUS_SUCCESS;
+ }
+ else if (IoStack->MinorFunction == IRP_MN_START_DEVICE)
+ {
+ /* start bus */
+ return KspStartBusDevice(DeviceObject, &BusDeviceExtension->Common,
Irp);
+ }
+ else if (IoStack->MinorFunction == IRP_MN_QUERY_CAPABILITIES)
+ {
+ /* query capabilities */
+ return KspQueryBusDeviceCapabilities(&BusDeviceExtension->Common,
Irp);
+ }
+ else if (IoStack->MinorFunction == IRP_MN_QUERY_PNP_DEVICE_STATE)
+ {
+ /* query pnp state */
+ return KspQueryBusDevicePnpState(&BusDeviceExtension->Common, Irp);
+ }
+ else if (IoStack->MinorFunction == IRP_MN_QUERY_INTERFACE)
+ {
+ /* query interface */
+ return KspQueryBusDeviceInterface(Irp, &BusDeviceExtension->Common);
+ }
+
+ DPRINT1("KsServiceBusEnumPnpRequest BusObject MinorFunction %x\n",
IoStack->MinorFunction);
+ return STATUS_NOT_SUPPORTED;
+ }
+}
+
+/*
+ @implemented
+*/
+KSDDKAPI
+NTSTATUS
+NTAPI
+KsRemoveBusEnumInterface(
+ IN PIRP Irp)
+{
+ KPROCESSOR_MODE Mode;
+ LUID luid;
+ BUS_INSTALL_ENUM_CONTEXT Ctx;
+ PDEV_EXTENSION DeviceExtension;
+ PBUS_ENUM_DEVICE_EXTENSION BusDeviceExtension;
+ PIO_STACK_LOCATION IoStack;
+
+ DPRINT1("KsRemoveBusEnumInterface\n");
+
+ /* get io stack location */
+ IoStack = IoGetCurrentIrpStackLocation(Irp);
+
+ /* get device extension */
+ DeviceExtension = (PDEV_EXTENSION)IoStack->DeviceObject->DeviceExtension;
+
+ /* get bus device extension */
+ BusDeviceExtension = DeviceExtension->Ext->BusDeviceExtension;
+
+ /* get previous mode */
+ Mode = ExGetPreviousMode();
+
+ /* convert to luid */
+ luid = RtlConvertUlongToLuid(SE_LOAD_DRIVER_PRIVILEGE);
+
+ /* perform access check */
+ if (!SeSinglePrivilegeCheck(luid, Mode))
+ {
+ /* insufficient privileges */
+ return STATUS_PRIVILEGE_NOT_HELD;
+ }
+
+ /* initialize context */
+ KeInitializeEvent(&Ctx.Event, NotificationEvent, FALSE);
+ Ctx.Irp = Irp;
+ Ctx.BusDeviceExtension = BusDeviceExtension;
+ ExInitializeWorkItem(&Ctx.WorkItem, KspRemoveBusInterface, (PVOID)&Ctx);
+
+ /* now queue the work item */
+ ExQueueWorkItem(&Ctx.WorkItem, DelayedWorkQueue);
+
+ /* wait for completion */
+ KeWaitForSingleObject(&Ctx.Event, Executive, KernelMode, FALSE, NULL);
+
+ /* return result */
+ return Ctx.Status;
+}
Propchange: branches/audio-bringup/drivers/ksfilter/ks/swenum.c
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janderwald＠svn.reactos.org