2 * PROJECT: ReactOS Kernel
3 * COPYRIGHT: GPL - See COPYING in the top level directory
4 * FILE: ntoskrnl/io/pnpmgr/pnpmgr.c
5 * PURPOSE: Initializes the PnP manager
6 * PROGRAMMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
7 * Copyright 2007 Hervé Poussineau (hpoussin@reactos.org)
10 /* INCLUDES ******************************************************************/
16 /* GLOBALS *******************************************************************/
18 PDEVICE_NODE IopRootDeviceNode
;
19 KSPIN_LOCK IopDeviceTreeLock
;
20 ERESOURCE PpRegistryDeviceResource
;
21 KGUARDED_MUTEX PpDeviceReferenceTableLock
;
22 RTL_AVL_TABLE PpDeviceReferenceTable
;
24 extern ERESOURCE IopDriverLoadResource
;
25 extern ULONG ExpInitializationPhase
;
26 extern BOOLEAN ExpInTextModeSetup
;
27 extern BOOLEAN PnpSystemInit
;
29 /* DATA **********************************************************************/
31 PDRIVER_OBJECT IopRootDriverObject
;
32 PIO_BUS_TYPE_GUID_LIST PnpBusTypeGuidList
= NULL
;
33 LIST_ENTRY IopDeviceRelationsRequestList
;
34 WORK_QUEUE_ITEM IopDeviceRelationsWorkItem
;
35 BOOLEAN IopDeviceRelationsRequestInProgress
;
36 KSPIN_LOCK IopDeviceRelationsSpinLock
;
38 typedef struct _INVALIDATE_DEVICE_RELATION_DATA
40 LIST_ENTRY RequestListEntry
;
41 PDEVICE_OBJECT DeviceObject
;
42 DEVICE_RELATION_TYPE Type
;
43 } INVALIDATE_DEVICE_RELATION_DATA
, *PINVALIDATE_DEVICE_RELATION_DATA
;
45 /* FUNCTIONS *****************************************************************/
48 IopCreateDeviceKeyPath(IN PCUNICODE_STRING RegistryPath
,
49 IN ULONG CreateOptions
,
53 IopCancelPrepareDeviceForRemoval(PDEVICE_OBJECT DeviceObject
);
56 IopPrepareDeviceForRemoval(PDEVICE_OBJECT DeviceObject
, BOOLEAN Force
);
59 IopGetDeviceObjectFromDeviceInstance(PUNICODE_STRING DeviceInstance
);
63 IopGetDeviceNode(PDEVICE_OBJECT DeviceObject
)
65 return ((PEXTENDED_DEVOBJ_EXTENSION
)DeviceObject
->DeviceObjectExtension
)->DeviceNode
;
69 IopFixupDeviceId(PWCHAR String
)
71 SIZE_T Length
= wcslen(String
), i
;
73 for (i
= 0; i
< Length
; i
++)
75 if (String
[i
] == L
'\\')
82 IopInstallCriticalDevice(PDEVICE_NODE DeviceNode
)
85 HANDLE CriticalDeviceKey
, InstanceKey
;
86 OBJECT_ATTRIBUTES ObjectAttributes
;
87 UNICODE_STRING CriticalDeviceKeyU
= RTL_CONSTANT_STRING(L
"\\Registry\\Machine\\System\\CurrentControlSet\\Control\\CriticalDeviceDatabase");
88 UNICODE_STRING CompatibleIdU
= RTL_CONSTANT_STRING(L
"CompatibleIDs");
89 UNICODE_STRING HardwareIdU
= RTL_CONSTANT_STRING(L
"HardwareID");
90 UNICODE_STRING ServiceU
= RTL_CONSTANT_STRING(L
"Service");
91 UNICODE_STRING ClassGuidU
= RTL_CONSTANT_STRING(L
"ClassGUID");
92 PKEY_VALUE_PARTIAL_INFORMATION PartialInfo
;
93 ULONG HidLength
= 0, CidLength
= 0, BufferLength
;
94 PWCHAR IdBuffer
, OriginalIdBuffer
;
96 /* Open the device instance key */
97 Status
= IopCreateDeviceKeyPath(&DeviceNode
->InstancePath
, 0, &InstanceKey
);
98 if (Status
!= STATUS_SUCCESS
)
101 Status
= ZwQueryValueKey(InstanceKey
,
103 KeyValuePartialInformation
,
107 if (Status
!= STATUS_BUFFER_OVERFLOW
&& Status
!= STATUS_BUFFER_TOO_SMALL
)
109 ZwClose(InstanceKey
);
113 Status
= ZwQueryValueKey(InstanceKey
,
115 KeyValuePartialInformation
,
119 if (Status
!= STATUS_BUFFER_OVERFLOW
&& Status
!= STATUS_BUFFER_TOO_SMALL
)
124 BufferLength
= HidLength
+ CidLength
;
125 BufferLength
-= (((CidLength
!= 0) ? 2 : 1) * FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION
, Data
));
127 /* Allocate a buffer to hold data from both */
128 OriginalIdBuffer
= IdBuffer
= ExAllocatePool(PagedPool
, BufferLength
);
131 ZwClose(InstanceKey
);
135 /* Compute the buffer size */
136 if (HidLength
> CidLength
)
137 BufferLength
= HidLength
;
139 BufferLength
= CidLength
;
141 PartialInfo
= ExAllocatePool(PagedPool
, BufferLength
);
144 ZwClose(InstanceKey
);
145 ExFreePool(OriginalIdBuffer
);
149 Status
= ZwQueryValueKey(InstanceKey
,
151 KeyValuePartialInformation
,
155 if (Status
!= STATUS_SUCCESS
)
157 ExFreePool(PartialInfo
);
158 ExFreePool(OriginalIdBuffer
);
159 ZwClose(InstanceKey
);
163 /* Copy in HID info first (without 2nd terminating NULL if CID is present) */
164 HidLength
= PartialInfo
->DataLength
- ((CidLength
!= 0) ? sizeof(WCHAR
) : 0);
165 RtlCopyMemory(IdBuffer
, PartialInfo
->Data
, HidLength
);
169 Status
= ZwQueryValueKey(InstanceKey
,
171 KeyValuePartialInformation
,
175 if (Status
!= STATUS_SUCCESS
)
177 ExFreePool(PartialInfo
);
178 ExFreePool(OriginalIdBuffer
);
179 ZwClose(InstanceKey
);
184 CidLength
= PartialInfo
->DataLength
;
185 RtlCopyMemory(((PUCHAR
)IdBuffer
) + HidLength
, PartialInfo
->Data
, CidLength
);
188 /* Free our temp buffer */
189 ExFreePool(PartialInfo
);
191 InitializeObjectAttributes(&ObjectAttributes
,
193 OBJ_KERNEL_HANDLE
| OBJ_CASE_INSENSITIVE
,
196 Status
= ZwOpenKey(&CriticalDeviceKey
,
197 KEY_ENUMERATE_SUB_KEYS
,
199 if (!NT_SUCCESS(Status
))
201 /* The critical device database doesn't exist because
202 * we're probably in 1st stage setup, but it's ok */
203 ExFreePool(OriginalIdBuffer
);
204 ZwClose(InstanceKey
);
210 USHORT StringLength
= (USHORT
)wcslen(IdBuffer
) + 1, Index
;
212 IopFixupDeviceId(IdBuffer
);
214 /* Look through all subkeys for a match */
215 for (Index
= 0; TRUE
; Index
++)
218 PKEY_BASIC_INFORMATION BasicInfo
;
220 Status
= ZwEnumerateKey(CriticalDeviceKey
,
226 if (Status
== STATUS_NO_MORE_ENTRIES
)
228 else if (Status
== STATUS_BUFFER_OVERFLOW
|| Status
== STATUS_BUFFER_TOO_SMALL
)
230 UNICODE_STRING ChildIdNameU
, RegKeyNameU
;
232 BasicInfo
= ExAllocatePool(PagedPool
, NeededLength
);
236 ExFreePool(OriginalIdBuffer
);
237 ZwClose(CriticalDeviceKey
);
238 ZwClose(InstanceKey
);
242 Status
= ZwEnumerateKey(CriticalDeviceKey
,
248 if (Status
!= STATUS_SUCCESS
)
250 /* This shouldn't happen */
251 ExFreePool(BasicInfo
);
255 ChildIdNameU
.Buffer
= IdBuffer
;
256 ChildIdNameU
.MaximumLength
= ChildIdNameU
.Length
= (StringLength
- 1) * sizeof(WCHAR
);
257 RegKeyNameU
.Buffer
= BasicInfo
->Name
;
258 RegKeyNameU
.MaximumLength
= RegKeyNameU
.Length
= (USHORT
)BasicInfo
->NameLength
;
260 if (RtlEqualUnicodeString(&ChildIdNameU
, &RegKeyNameU
, TRUE
))
262 HANDLE ChildKeyHandle
;
264 InitializeObjectAttributes(&ObjectAttributes
,
266 OBJ_KERNEL_HANDLE
| OBJ_CASE_INSENSITIVE
,
270 Status
= ZwOpenKey(&ChildKeyHandle
,
273 if (Status
!= STATUS_SUCCESS
)
275 ExFreePool(BasicInfo
);
279 /* Check if there's already a driver installed */
280 Status
= ZwQueryValueKey(InstanceKey
,
282 KeyValuePartialInformation
,
286 if (Status
== STATUS_BUFFER_OVERFLOW
|| Status
== STATUS_BUFFER_TOO_SMALL
)
288 ExFreePool(BasicInfo
);
292 Status
= ZwQueryValueKey(ChildKeyHandle
,
294 KeyValuePartialInformation
,
298 if (Status
!= STATUS_BUFFER_OVERFLOW
&& Status
!= STATUS_BUFFER_TOO_SMALL
)
300 ExFreePool(BasicInfo
);
304 PartialInfo
= ExAllocatePool(PagedPool
, NeededLength
);
307 ExFreePool(OriginalIdBuffer
);
308 ExFreePool(BasicInfo
);
309 ZwClose(InstanceKey
);
310 ZwClose(ChildKeyHandle
);
311 ZwClose(CriticalDeviceKey
);
315 /* Read ClassGUID entry in the CDDB */
316 Status
= ZwQueryValueKey(ChildKeyHandle
,
318 KeyValuePartialInformation
,
322 if (Status
!= STATUS_SUCCESS
)
324 ExFreePool(BasicInfo
);
328 /* Write it to the ENUM key */
329 Status
= ZwSetValueKey(InstanceKey
,
334 PartialInfo
->DataLength
);
335 if (Status
!= STATUS_SUCCESS
)
337 ExFreePool(BasicInfo
);
338 ExFreePool(PartialInfo
);
339 ZwClose(ChildKeyHandle
);
343 Status
= ZwQueryValueKey(ChildKeyHandle
,
345 KeyValuePartialInformation
,
349 if (Status
== STATUS_BUFFER_OVERFLOW
|| Status
== STATUS_BUFFER_TOO_SMALL
)
351 ExFreePool(PartialInfo
);
352 PartialInfo
= ExAllocatePool(PagedPool
, NeededLength
);
355 ExFreePool(OriginalIdBuffer
);
356 ExFreePool(BasicInfo
);
357 ZwClose(InstanceKey
);
358 ZwClose(ChildKeyHandle
);
359 ZwClose(CriticalDeviceKey
);
363 /* Read the service entry from the CDDB */
364 Status
= ZwQueryValueKey(ChildKeyHandle
,
366 KeyValuePartialInformation
,
370 if (Status
!= STATUS_SUCCESS
)
372 ExFreePool(BasicInfo
);
373 ExFreePool(PartialInfo
);
374 ZwClose(ChildKeyHandle
);
378 /* Write it to the ENUM key */
379 Status
= ZwSetValueKey(InstanceKey
,
384 PartialInfo
->DataLength
);
385 if (Status
!= STATUS_SUCCESS
)
387 ExFreePool(BasicInfo
);
388 ExFreePool(PartialInfo
);
389 ZwClose(ChildKeyHandle
);
393 DPRINT("Installed service '%S' for critical device '%wZ'\n", PartialInfo
->Data
, &ChildIdNameU
);
397 DPRINT1("Installed NULL service for critical device '%wZ'\n", &ChildIdNameU
);
400 ExFreePool(OriginalIdBuffer
);
401 ExFreePool(PartialInfo
);
402 ExFreePool(BasicInfo
);
403 ZwClose(InstanceKey
);
404 ZwClose(ChildKeyHandle
);
405 ZwClose(CriticalDeviceKey
);
411 ExFreePool(BasicInfo
);
415 /* Umm, not sure what happened here */
420 /* Advance to the next ID */
421 IdBuffer
+= StringLength
;
424 ExFreePool(OriginalIdBuffer
);
425 ZwClose(InstanceKey
);
426 ZwClose(CriticalDeviceKey
);
431 IopInitializeDevice(PDEVICE_NODE DeviceNode
,
432 PDRIVER_OBJECT DriverObject
)
439 /* Special case for bus driven devices */
440 DeviceNode
->Flags
|= DNF_ADDED
;
441 return STATUS_SUCCESS
;
444 if (!DriverObject
->DriverExtension
->AddDevice
)
446 DeviceNode
->Flags
|= DNF_LEGACY_DRIVER
;
449 if (DeviceNode
->Flags
& DNF_LEGACY_DRIVER
)
451 DeviceNode
->Flags
|= DNF_ADDED
+ DNF_STARTED
;
452 return STATUS_SUCCESS
;
455 /* This is a Plug and Play driver */
456 DPRINT("Plug and Play driver found\n");
457 ASSERT(DeviceNode
->PhysicalDeviceObject
);
459 DPRINT("Calling %wZ->AddDevice(%wZ)\n",
460 &DriverObject
->DriverName
,
461 &DeviceNode
->InstancePath
);
462 Status
= DriverObject
->DriverExtension
->AddDevice(
463 DriverObject
, DeviceNode
->PhysicalDeviceObject
);
464 if (!NT_SUCCESS(Status
))
466 DPRINT1("%wZ->AddDevice(%wZ) failed with status 0x%x\n",
467 &DriverObject
->DriverName
,
468 &DeviceNode
->InstancePath
,
470 IopDeviceNodeSetFlag(DeviceNode
, DNF_DISABLED
);
471 DeviceNode
->Problem
= CM_PROB_FAILED_ADD
;
475 Fdo
= IoGetAttachedDeviceReference(DeviceNode
->PhysicalDeviceObject
);
477 /* Check if we have a ACPI device (needed for power management) */
478 if (Fdo
->DeviceType
== FILE_DEVICE_ACPI
)
480 static BOOLEAN SystemPowerDeviceNodeCreated
= FALSE
;
482 /* There can be only one system power device */
483 if (!SystemPowerDeviceNodeCreated
)
485 PopSystemPowerDeviceNode
= DeviceNode
;
486 ObReferenceObject(PopSystemPowerDeviceNode
->PhysicalDeviceObject
);
487 SystemPowerDeviceNodeCreated
= TRUE
;
491 ObDereferenceObject(Fdo
);
493 IopDeviceNodeSetFlag(DeviceNode
, DNF_ADDED
);
495 return STATUS_SUCCESS
;
501 IopSendEject(IN PDEVICE_OBJECT DeviceObject
)
503 IO_STACK_LOCATION Stack
;
506 RtlZeroMemory(&Stack
, sizeof(IO_STACK_LOCATION
));
507 Stack
.MajorFunction
= IRP_MJ_PNP
;
508 Stack
.MinorFunction
= IRP_MN_EJECT
;
510 return IopSynchronousCall(DeviceObject
, &Stack
, &Dummy
);
516 IopSendSurpriseRemoval(IN PDEVICE_OBJECT DeviceObject
)
518 IO_STACK_LOCATION Stack
;
521 RtlZeroMemory(&Stack
, sizeof(IO_STACK_LOCATION
));
522 Stack
.MajorFunction
= IRP_MJ_PNP
;
523 Stack
.MinorFunction
= IRP_MN_SURPRISE_REMOVAL
;
525 /* Drivers should never fail a IRP_MN_SURPRISE_REMOVAL request */
526 IopSynchronousCall(DeviceObject
, &Stack
, &Dummy
);
532 IopQueryRemoveDevice(IN PDEVICE_OBJECT DeviceObject
)
534 PDEVICE_NODE DeviceNode
= IopGetDeviceNode(DeviceObject
);
535 IO_STACK_LOCATION Stack
;
541 IopQueueTargetDeviceEvent(&GUID_DEVICE_REMOVE_PENDING
,
542 &DeviceNode
->InstancePath
);
544 RtlZeroMemory(&Stack
, sizeof(IO_STACK_LOCATION
));
545 Stack
.MajorFunction
= IRP_MJ_PNP
;
546 Stack
.MinorFunction
= IRP_MN_QUERY_REMOVE_DEVICE
;
548 Status
= IopSynchronousCall(DeviceObject
, &Stack
, &Dummy
);
550 IopNotifyPlugPlayNotification(DeviceObject
,
551 EventCategoryTargetDeviceChange
,
552 &GUID_TARGET_DEVICE_QUERY_REMOVE
,
556 if (!NT_SUCCESS(Status
))
558 DPRINT1("Removal vetoed by %wZ\n", &DeviceNode
->InstancePath
);
559 IopQueueTargetDeviceEvent(&GUID_DEVICE_REMOVAL_VETOED
,
560 &DeviceNode
->InstancePath
);
569 IopQueryStopDevice(IN PDEVICE_OBJECT DeviceObject
)
571 IO_STACK_LOCATION Stack
;
574 RtlZeroMemory(&Stack
, sizeof(IO_STACK_LOCATION
));
575 Stack
.MajorFunction
= IRP_MJ_PNP
;
576 Stack
.MinorFunction
= IRP_MN_QUERY_STOP_DEVICE
;
578 return IopSynchronousCall(DeviceObject
, &Stack
, &Dummy
);
584 IopSendRemoveDevice(IN PDEVICE_OBJECT DeviceObject
)
586 IO_STACK_LOCATION Stack
;
588 PDEVICE_NODE DeviceNode
= IopGetDeviceNode(DeviceObject
);
590 /* Drop all our state for this device in case it isn't really going away */
591 DeviceNode
->Flags
&= DNF_ENUMERATED
| DNF_PROCESSED
;
593 RtlZeroMemory(&Stack
, sizeof(IO_STACK_LOCATION
));
594 Stack
.MajorFunction
= IRP_MJ_PNP
;
595 Stack
.MinorFunction
= IRP_MN_REMOVE_DEVICE
;
597 /* Drivers should never fail a IRP_MN_REMOVE_DEVICE request */
598 IopSynchronousCall(DeviceObject
, &Stack
, &Dummy
);
600 IopNotifyPlugPlayNotification(DeviceObject
,
601 EventCategoryTargetDeviceChange
,
602 &GUID_TARGET_DEVICE_REMOVE_COMPLETE
,
605 ObDereferenceObject(DeviceObject
);
611 IopCancelRemoveDevice(IN PDEVICE_OBJECT DeviceObject
)
613 IO_STACK_LOCATION Stack
;
616 RtlZeroMemory(&Stack
, sizeof(IO_STACK_LOCATION
));
617 Stack
.MajorFunction
= IRP_MJ_PNP
;
618 Stack
.MinorFunction
= IRP_MN_CANCEL_REMOVE_DEVICE
;
620 /* Drivers should never fail a IRP_MN_CANCEL_REMOVE_DEVICE request */
621 IopSynchronousCall(DeviceObject
, &Stack
, &Dummy
);
623 IopNotifyPlugPlayNotification(DeviceObject
,
624 EventCategoryTargetDeviceChange
,
625 &GUID_TARGET_DEVICE_REMOVE_CANCELLED
,
633 IopSendStopDevice(IN PDEVICE_OBJECT DeviceObject
)
635 IO_STACK_LOCATION Stack
;
638 RtlZeroMemory(&Stack
, sizeof(IO_STACK_LOCATION
));
639 Stack
.MajorFunction
= IRP_MJ_PNP
;
640 Stack
.MinorFunction
= IRP_MN_STOP_DEVICE
;
642 /* Drivers should never fail a IRP_MN_STOP_DEVICE request */
643 IopSynchronousCall(DeviceObject
, &Stack
, &Dummy
);
648 IopStartDevice2(IN PDEVICE_OBJECT DeviceObject
)
650 IO_STACK_LOCATION Stack
;
651 PDEVICE_NODE DeviceNode
;
654 DEVICE_CAPABILITIES DeviceCapabilities
;
656 /* Get the device node */
657 DeviceNode
= IopGetDeviceNode(DeviceObject
);
659 ASSERT(!(DeviceNode
->Flags
& DNF_DISABLED
));
661 /* Build the I/O stack location */
662 RtlZeroMemory(&Stack
, sizeof(IO_STACK_LOCATION
));
663 Stack
.MajorFunction
= IRP_MJ_PNP
;
664 Stack
.MinorFunction
= IRP_MN_START_DEVICE
;
666 Stack
.Parameters
.StartDevice
.AllocatedResources
=
667 DeviceNode
->ResourceList
;
668 Stack
.Parameters
.StartDevice
.AllocatedResourcesTranslated
=
669 DeviceNode
->ResourceListTranslated
;
672 Status
= IopSynchronousCall(DeviceObject
, &Stack
, &Dummy
);
673 if (!NT_SUCCESS(Status
))
675 /* Send an IRP_MN_REMOVE_DEVICE request */
676 IopRemoveDevice(DeviceNode
);
678 /* Set the appropriate flag */
679 DeviceNode
->Flags
|= DNF_START_FAILED
;
680 DeviceNode
->Problem
= CM_PROB_FAILED_START
;
682 DPRINT1("Warning: PnP Start failed (%wZ) [Status: 0x%x]\n", &DeviceNode
->InstancePath
, Status
);
686 DPRINT("Sending IRP_MN_QUERY_CAPABILITIES to device stack (after start)\n");
688 Status
= IopQueryDeviceCapabilities(DeviceNode
, &DeviceCapabilities
);
689 if (!NT_SUCCESS(Status
))
691 DPRINT1("IopInitiatePnpIrp() failed (Status 0x%08lx)\n", Status
);
694 /* Invalidate device state so IRP_MN_QUERY_PNP_DEVICE_STATE is sent */
695 IoInvalidateDeviceState(DeviceObject
);
697 /* Otherwise, mark us as started */
698 DeviceNode
->Flags
|= DNF_STARTED
;
699 DeviceNode
->Flags
&= ~DNF_STOPPED
;
701 /* We now need enumeration */
702 DeviceNode
->Flags
|= DNF_NEED_ENUMERATION_ONLY
;
707 IopStartAndEnumerateDevice(IN PDEVICE_NODE DeviceNode
)
709 PDEVICE_OBJECT DeviceObject
;
714 ASSERT((DeviceNode
->Flags
& DNF_ADDED
));
715 ASSERT((DeviceNode
->Flags
& (DNF_RESOURCE_ASSIGNED
|
716 DNF_RESOURCE_REPORTED
|
717 DNF_NO_RESOURCE_REQUIRED
)));
719 /* Get the device object */
720 DeviceObject
= DeviceNode
->PhysicalDeviceObject
;
722 /* Check if we're not started yet */
723 if (!(DeviceNode
->Flags
& DNF_STARTED
))
726 IopStartDevice2(DeviceObject
);
729 /* Do we need to query IDs? This happens in the case of manual reporting */
731 if (DeviceNode
->Flags
& DNF_NEED_QUERY_IDS
)
733 DPRINT1("Warning: Device node has DNF_NEED_QUERY_IDS\n");
734 /* And that case shouldn't happen yet */
739 /* Make sure we're started, and check if we need enumeration */
740 if ((DeviceNode
->Flags
& DNF_STARTED
) &&
741 (DeviceNode
->Flags
& DNF_NEED_ENUMERATION_ONLY
))
744 IoSynchronousInvalidateDeviceRelations(DeviceObject
, BusRelations
);
745 Status
= STATUS_SUCCESS
;
750 Status
= STATUS_SUCCESS
;
759 PDEVICE_NODE DeviceNode
)
763 DPRINT("Stopping device: %wZ\n", &DeviceNode
->InstancePath
);
765 Status
= IopQueryStopDevice(DeviceNode
->PhysicalDeviceObject
);
766 if (NT_SUCCESS(Status
))
768 IopSendStopDevice(DeviceNode
->PhysicalDeviceObject
);
770 DeviceNode
->Flags
&= ~(DNF_STARTED
| DNF_START_REQUEST_PENDING
);
771 DeviceNode
->Flags
|= DNF_STOPPED
;
773 return STATUS_SUCCESS
;
781 PDEVICE_NODE DeviceNode
)
784 HANDLE InstanceHandle
= NULL
, ControlHandle
= NULL
;
785 UNICODE_STRING KeyName
;
786 OBJECT_ATTRIBUTES ObjectAttributes
;
788 if (DeviceNode
->Flags
& DNF_DISABLED
)
789 return STATUS_SUCCESS
;
791 Status
= IopAssignDeviceResources(DeviceNode
);
792 if (!NT_SUCCESS(Status
))
796 IopStartAndEnumerateDevice(DeviceNode
);
798 /* FIX: Should be done in new device instance code */
799 Status
= IopCreateDeviceKeyPath(&DeviceNode
->InstancePath
, 0, &InstanceHandle
);
800 if (!NT_SUCCESS(Status
))
803 /* FIX: Should be done in IoXxxPrepareDriverLoading */
805 RtlInitUnicodeString(&KeyName
, L
"Control");
806 InitializeObjectAttributes(&ObjectAttributes
,
808 OBJ_CASE_INSENSITIVE
| OBJ_KERNEL_HANDLE
,
811 Status
= ZwCreateKey(&ControlHandle
, KEY_SET_VALUE
, &ObjectAttributes
, 0, NULL
, REG_OPTION_VOLATILE
, NULL
);
812 if (!NT_SUCCESS(Status
))
815 RtlInitUnicodeString(&KeyName
, L
"ActiveService");
816 Status
= ZwSetValueKey(ControlHandle
, &KeyName
, 0, REG_SZ
, DeviceNode
->ServiceName
.Buffer
, DeviceNode
->ServiceName
.Length
);
820 if (ControlHandle
!= NULL
)
821 ZwClose(ControlHandle
);
823 if (InstanceHandle
!= NULL
)
824 ZwClose(InstanceHandle
);
831 IopQueryDeviceCapabilities(PDEVICE_NODE DeviceNode
,
832 PDEVICE_CAPABILITIES DeviceCaps
)
834 IO_STATUS_BLOCK StatusBlock
;
835 IO_STACK_LOCATION Stack
;
838 UNICODE_STRING ValueName
;
840 /* Set up the Header */
841 RtlZeroMemory(DeviceCaps
, sizeof(DEVICE_CAPABILITIES
));
842 DeviceCaps
->Size
= sizeof(DEVICE_CAPABILITIES
);
843 DeviceCaps
->Version
= 1;
844 DeviceCaps
->Address
= -1;
845 DeviceCaps
->UINumber
= -1;
847 /* Set up the Stack */
848 RtlZeroMemory(&Stack
, sizeof(IO_STACK_LOCATION
));
849 Stack
.Parameters
.DeviceCapabilities
.Capabilities
= DeviceCaps
;
852 Status
= IopInitiatePnpIrp(DeviceNode
->PhysicalDeviceObject
,
854 IRP_MN_QUERY_CAPABILITIES
,
856 if (!NT_SUCCESS(Status
))
858 DPRINT1("IRP_MN_QUERY_CAPABILITIES failed with status 0x%x\n", Status
);
862 DeviceNode
->CapabilityFlags
= *(PULONG
)((ULONG_PTR
)&DeviceCaps
->Version
+ sizeof(DeviceCaps
->Version
));
864 if (DeviceCaps
->NoDisplayInUI
)
865 DeviceNode
->UserFlags
|= DNUF_DONT_SHOW_IN_UI
;
867 DeviceNode
->UserFlags
&= ~DNUF_DONT_SHOW_IN_UI
;
869 Status
= IopCreateDeviceKeyPath(&DeviceNode
->InstancePath
, 0, &InstanceKey
);
870 if (NT_SUCCESS(Status
))
872 /* Set 'Capabilities' value */
873 RtlInitUnicodeString(&ValueName
, L
"Capabilities");
874 Status
= ZwSetValueKey(InstanceKey
,
878 (PVOID
)&DeviceNode
->CapabilityFlags
,
881 /* Set 'UINumber' value */
882 if (DeviceCaps
->UINumber
!= MAXULONG
)
884 RtlInitUnicodeString(&ValueName
, L
"UINumber");
885 Status
= ZwSetValueKey(InstanceKey
,
889 &DeviceCaps
->UINumber
,
900 IopDeviceRelationsWorker(
903 PLIST_ENTRY ListEntry
;
904 PINVALIDATE_DEVICE_RELATION_DATA Data
;
907 KeAcquireSpinLock(&IopDeviceRelationsSpinLock
, &OldIrql
);
908 while (!IsListEmpty(&IopDeviceRelationsRequestList
))
910 ListEntry
= RemoveHeadList(&IopDeviceRelationsRequestList
);
911 KeReleaseSpinLock(&IopDeviceRelationsSpinLock
, OldIrql
);
912 Data
= CONTAINING_RECORD(ListEntry
,
913 INVALIDATE_DEVICE_RELATION_DATA
,
916 IoSynchronousInvalidateDeviceRelations(Data
->DeviceObject
,
919 ObDereferenceObject(Data
->DeviceObject
);
921 KeAcquireSpinLock(&IopDeviceRelationsSpinLock
, &OldIrql
);
923 IopDeviceRelationsRequestInProgress
= FALSE
;
924 KeReleaseSpinLock(&IopDeviceRelationsSpinLock
, OldIrql
);
928 IopGetSystemPowerDeviceObject(PDEVICE_OBJECT
*DeviceObject
)
932 if (PopSystemPowerDeviceNode
)
934 KeAcquireSpinLock(&IopDeviceTreeLock
, &OldIrql
);
935 *DeviceObject
= PopSystemPowerDeviceNode
->PhysicalDeviceObject
;
936 KeReleaseSpinLock(&IopDeviceTreeLock
, OldIrql
);
938 return STATUS_SUCCESS
;
941 return STATUS_UNSUCCESSFUL
;
946 IopGetBusTypeGuidIndex(LPGUID BusTypeGuid
)
948 USHORT i
= 0, FoundIndex
= 0xFFFF;
952 /* Acquire the lock */
953 ExAcquireFastMutex(&PnpBusTypeGuidList
->Lock
);
955 /* Loop all entries */
956 while (i
< PnpBusTypeGuidList
->GuidCount
)
958 /* Try to find a match */
959 if (RtlCompareMemory(BusTypeGuid
,
960 &PnpBusTypeGuidList
->Guids
[i
],
961 sizeof(GUID
)) == sizeof(GUID
))
970 /* Check if we have to grow the list */
971 if (PnpBusTypeGuidList
->GuidCount
)
973 /* Calculate the new size */
974 NewSize
= sizeof(IO_BUS_TYPE_GUID_LIST
) +
975 (sizeof(GUID
) * PnpBusTypeGuidList
->GuidCount
);
977 /* Allocate the new copy */
978 NewList
= ExAllocatePool(PagedPool
, NewSize
);
982 ExFreePool(PnpBusTypeGuidList
);
986 /* Now copy them, decrease the size too */
987 NewSize
-= sizeof(GUID
);
988 RtlCopyMemory(NewList
, PnpBusTypeGuidList
, NewSize
);
990 /* Free the old list */
991 ExFreePool(PnpBusTypeGuidList
);
993 /* Use the new buffer */
994 PnpBusTypeGuidList
= NewList
;
997 /* Copy the new GUID */
998 RtlCopyMemory(&PnpBusTypeGuidList
->Guids
[PnpBusTypeGuidList
->GuidCount
],
1002 /* The new entry is the index */
1003 FoundIndex
= (USHORT
)PnpBusTypeGuidList
->GuidCount
;
1004 PnpBusTypeGuidList
->GuidCount
++;
1007 ExReleaseFastMutex(&PnpBusTypeGuidList
->Lock
);
1013 * Creates a device node
1016 * ParentNode = Pointer to parent device node
1017 * PhysicalDeviceObject = Pointer to PDO for device object. Pass NULL
1018 * to have the root device node create one
1019 * (eg. for legacy drivers)
1020 * DeviceNode = Pointer to storage for created device node
1026 IopCreateDeviceNode(PDEVICE_NODE ParentNode
,
1027 PDEVICE_OBJECT PhysicalDeviceObject
,
1028 PUNICODE_STRING ServiceName
,
1029 PDEVICE_NODE
*DeviceNode
)
1034 UNICODE_STRING FullServiceName
;
1035 UNICODE_STRING LegacyPrefix
= RTL_CONSTANT_STRING(L
"LEGACY_");
1036 UNICODE_STRING UnknownDeviceName
= RTL_CONSTANT_STRING(L
"UNKNOWN");
1037 UNICODE_STRING KeyName
, ClassName
;
1038 PUNICODE_STRING ServiceName1
;
1040 UNICODE_STRING ClassGUID
;
1041 HANDLE InstanceHandle
;
1043 DPRINT("ParentNode 0x%p PhysicalDeviceObject 0x%p ServiceName %wZ\n",
1044 ParentNode
, PhysicalDeviceObject
, ServiceName
);
1046 Node
= ExAllocatePoolWithTag(NonPagedPool
, sizeof(DEVICE_NODE
), TAG_IO_DEVNODE
);
1049 return STATUS_INSUFFICIENT_RESOURCES
;
1052 RtlZeroMemory(Node
, sizeof(DEVICE_NODE
));
1055 ServiceName1
= &UnknownDeviceName
;
1057 ServiceName1
= ServiceName
;
1059 if (!PhysicalDeviceObject
)
1061 FullServiceName
.MaximumLength
= LegacyPrefix
.Length
+ ServiceName1
->Length
;
1062 FullServiceName
.Length
= 0;
1063 FullServiceName
.Buffer
= ExAllocatePool(PagedPool
, FullServiceName
.MaximumLength
);
1064 if (!FullServiceName
.Buffer
)
1066 ExFreePoolWithTag(Node
, TAG_IO_DEVNODE
);
1067 return STATUS_INSUFFICIENT_RESOURCES
;
1070 RtlAppendUnicodeStringToString(&FullServiceName
, &LegacyPrefix
);
1071 RtlAppendUnicodeStringToString(&FullServiceName
, ServiceName1
);
1073 Status
= PnpRootCreateDevice(&FullServiceName
, NULL
, &PhysicalDeviceObject
, &Node
->InstancePath
);
1074 if (!NT_SUCCESS(Status
))
1076 DPRINT1("PnpRootCreateDevice() failed with status 0x%08X\n", Status
);
1077 ExFreePoolWithTag(Node
, TAG_IO_DEVNODE
);
1081 /* Create the device key for legacy drivers */
1082 Status
= IopCreateDeviceKeyPath(&Node
->InstancePath
, REG_OPTION_VOLATILE
, &InstanceHandle
);
1083 if (!NT_SUCCESS(Status
))
1085 ZwClose(InstanceHandle
);
1086 ExFreePoolWithTag(Node
, TAG_IO_DEVNODE
);
1087 ExFreePool(FullServiceName
.Buffer
);
1091 Node
->ServiceName
.Buffer
= ExAllocatePool(PagedPool
, ServiceName1
->Length
);
1092 if (!Node
->ServiceName
.Buffer
)
1094 ZwClose(InstanceHandle
);
1095 ExFreePoolWithTag(Node
, TAG_IO_DEVNODE
);
1096 ExFreePool(FullServiceName
.Buffer
);
1100 Node
->ServiceName
.MaximumLength
= ServiceName1
->Length
;
1101 Node
->ServiceName
.Length
= 0;
1103 RtlAppendUnicodeStringToString(&Node
->ServiceName
, ServiceName1
);
1107 RtlInitUnicodeString(&KeyName
, L
"Service");
1108 Status
= ZwSetValueKey(InstanceHandle
, &KeyName
, 0, REG_SZ
, ServiceName
->Buffer
, ServiceName
->Length
);
1111 if (NT_SUCCESS(Status
))
1113 RtlInitUnicodeString(&KeyName
, L
"Legacy");
1116 Status
= ZwSetValueKey(InstanceHandle
, &KeyName
, 0, REG_DWORD
, &LegacyValue
, sizeof(LegacyValue
));
1117 if (NT_SUCCESS(Status
))
1119 RtlInitUnicodeString(&KeyName
, L
"Class");
1121 RtlInitUnicodeString(&ClassName
, L
"LegacyDriver\0");
1122 Status
= ZwSetValueKey(InstanceHandle
, &KeyName
, 0, REG_SZ
, ClassName
.Buffer
, ClassName
.Length
+ sizeof(UNICODE_NULL
));
1123 if (NT_SUCCESS(Status
))
1125 RtlInitUnicodeString(&KeyName
, L
"ClassGUID");
1127 RtlInitUnicodeString(&ClassGUID
, L
"{8ECC055D-047F-11D1-A537-0000F8753ED1}\0");
1128 Status
= ZwSetValueKey(InstanceHandle
, &KeyName
, 0, REG_SZ
, ClassGUID
.Buffer
, ClassGUID
.Length
+ sizeof(UNICODE_NULL
));
1129 if (NT_SUCCESS(Status
))
1131 RtlInitUnicodeString(&KeyName
, L
"DeviceDesc");
1133 Status
= ZwSetValueKey(InstanceHandle
, &KeyName
, 0, REG_SZ
, ServiceName1
->Buffer
, ServiceName1
->Length
+ sizeof(UNICODE_NULL
));
1139 ZwClose(InstanceHandle
);
1140 ExFreePool(FullServiceName
.Buffer
);
1142 if (!NT_SUCCESS(Status
))
1144 ExFreePoolWithTag(Node
, TAG_IO_DEVNODE
);
1148 IopDeviceNodeSetFlag(Node
, DNF_LEGACY_DRIVER
);
1149 IopDeviceNodeSetFlag(Node
, DNF_PROCESSED
);
1150 IopDeviceNodeSetFlag(Node
, DNF_ADDED
);
1151 IopDeviceNodeSetFlag(Node
, DNF_STARTED
);
1154 Node
->PhysicalDeviceObject
= PhysicalDeviceObject
;
1156 ((PEXTENDED_DEVOBJ_EXTENSION
)PhysicalDeviceObject
->DeviceObjectExtension
)->DeviceNode
= Node
;
1160 KeAcquireSpinLock(&IopDeviceTreeLock
, &OldIrql
);
1161 Node
->Parent
= ParentNode
;
1162 Node
->Sibling
= NULL
;
1163 if (ParentNode
->LastChild
== NULL
)
1165 ParentNode
->Child
= Node
;
1166 ParentNode
->LastChild
= Node
;
1170 ParentNode
->LastChild
->Sibling
= Node
;
1171 ParentNode
->LastChild
= Node
;
1173 KeReleaseSpinLock(&IopDeviceTreeLock
, OldIrql
);
1174 Node
->Level
= ParentNode
->Level
+ 1;
1177 PhysicalDeviceObject
->Flags
&= ~DO_DEVICE_INITIALIZING
;
1181 return STATUS_SUCCESS
;
1185 IopFreeDeviceNode(PDEVICE_NODE DeviceNode
)
1188 PDEVICE_NODE PrevSibling
= NULL
;
1190 /* All children must be deleted before a parent is deleted */
1191 ASSERT(!DeviceNode
->Child
);
1192 ASSERT(DeviceNode
->PhysicalDeviceObject
);
1194 KeAcquireSpinLock(&IopDeviceTreeLock
, &OldIrql
);
1196 /* Get previous sibling */
1197 if (DeviceNode
->Parent
&& DeviceNode
->Parent
->Child
!= DeviceNode
)
1199 PrevSibling
= DeviceNode
->Parent
->Child
;
1200 while (PrevSibling
->Sibling
!= DeviceNode
)
1201 PrevSibling
= PrevSibling
->Sibling
;
1204 /* Unlink from parent if it exists */
1205 if (DeviceNode
->Parent
)
1207 if (DeviceNode
->Parent
->LastChild
== DeviceNode
)
1209 DeviceNode
->Parent
->LastChild
= PrevSibling
;
1211 PrevSibling
->Sibling
= NULL
;
1213 if (DeviceNode
->Parent
->Child
== DeviceNode
)
1214 DeviceNode
->Parent
->Child
= DeviceNode
->Sibling
;
1217 /* Unlink from sibling list */
1219 PrevSibling
->Sibling
= DeviceNode
->Sibling
;
1221 KeReleaseSpinLock(&IopDeviceTreeLock
, OldIrql
);
1223 RtlFreeUnicodeString(&DeviceNode
->InstancePath
);
1225 RtlFreeUnicodeString(&DeviceNode
->ServiceName
);
1227 if (DeviceNode
->ResourceList
)
1229 ExFreePool(DeviceNode
->ResourceList
);
1232 if (DeviceNode
->ResourceListTranslated
)
1234 ExFreePool(DeviceNode
->ResourceListTranslated
);
1237 if (DeviceNode
->ResourceRequirements
)
1239 ExFreePool(DeviceNode
->ResourceRequirements
);
1242 if (DeviceNode
->BootResources
)
1244 ExFreePool(DeviceNode
->BootResources
);
1247 ((PEXTENDED_DEVOBJ_EXTENSION
)DeviceNode
->PhysicalDeviceObject
->DeviceObjectExtension
)->DeviceNode
= NULL
;
1248 ExFreePoolWithTag(DeviceNode
, TAG_IO_DEVNODE
);
1250 return STATUS_SUCCESS
;
1255 IopSynchronousCall(IN PDEVICE_OBJECT DeviceObject
,
1256 IN PIO_STACK_LOCATION IoStackLocation
,
1257 OUT PVOID
*Information
)
1260 PIO_STACK_LOCATION IrpStack
;
1261 IO_STATUS_BLOCK IoStatusBlock
;
1264 PDEVICE_OBJECT TopDeviceObject
;
1267 /* Call the top of the device stack */
1268 TopDeviceObject
= IoGetAttachedDeviceReference(DeviceObject
);
1270 /* Allocate an IRP */
1271 Irp
= IoAllocateIrp(TopDeviceObject
->StackSize
, FALSE
);
1272 if (!Irp
) return STATUS_INSUFFICIENT_RESOURCES
;
1274 /* Initialize to failure */
1275 Irp
->IoStatus
.Status
= IoStatusBlock
.Status
= STATUS_NOT_SUPPORTED
;
1276 Irp
->IoStatus
.Information
= IoStatusBlock
.Information
= 0;
1278 /* Special case for IRP_MN_FILTER_RESOURCE_REQUIREMENTS */
1279 if (IoStackLocation
->MinorFunction
== IRP_MN_FILTER_RESOURCE_REQUIREMENTS
)
1281 /* Copy the resource requirements list into the IOSB */
1282 Irp
->IoStatus
.Information
=
1283 IoStatusBlock
.Information
= (ULONG_PTR
)IoStackLocation
->Parameters
.FilterResourceRequirements
.IoResourceRequirementList
;
1286 /* Initialize the event */
1287 KeInitializeEvent(&Event
, SynchronizationEvent
, FALSE
);
1290 Irp
->UserIosb
= &IoStatusBlock
;
1291 Irp
->UserEvent
= &Event
;
1294 Irp
->Tail
.Overlay
.Thread
= PsGetCurrentThread();
1295 IoQueueThreadIrp(Irp
);
1297 /* Copy-in the stack */
1298 IrpStack
= IoGetNextIrpStackLocation(Irp
);
1299 *IrpStack
= *IoStackLocation
;
1301 /* Call the driver */
1302 Status
= IoCallDriver(TopDeviceObject
, Irp
);
1303 if (Status
== STATUS_PENDING
)
1306 KeWaitForSingleObject(&Event
,
1311 Status
= IoStatusBlock
.Status
;
1314 /* Remove the reference */
1315 ObDereferenceObject(TopDeviceObject
);
1317 /* Return the information */
1318 *Information
= (PVOID
)IoStatusBlock
.Information
;
1324 IopInitiatePnpIrp(IN PDEVICE_OBJECT DeviceObject
,
1325 IN OUT PIO_STATUS_BLOCK IoStatusBlock
,
1326 IN UCHAR MinorFunction
,
1327 IN PIO_STACK_LOCATION Stack OPTIONAL
)
1329 IO_STACK_LOCATION IoStackLocation
;
1331 /* Fill out the stack information */
1332 RtlZeroMemory(&IoStackLocation
, sizeof(IO_STACK_LOCATION
));
1333 IoStackLocation
.MajorFunction
= IRP_MJ_PNP
;
1334 IoStackLocation
.MinorFunction
= MinorFunction
;
1338 RtlCopyMemory(&IoStackLocation
.Parameters
,
1340 sizeof(Stack
->Parameters
));
1343 /* Do the PnP call */
1344 IoStatusBlock
->Status
= IopSynchronousCall(DeviceObject
,
1346 (PVOID
)&IoStatusBlock
->Information
);
1347 return IoStatusBlock
->Status
;
1351 IopTraverseDeviceTreeNode(PDEVICETREE_TRAVERSE_CONTEXT Context
)
1353 PDEVICE_NODE ParentDeviceNode
;
1354 PDEVICE_NODE ChildDeviceNode
;
1357 /* Copy context data so we don't overwrite it in subsequent calls to this function */
1358 ParentDeviceNode
= Context
->DeviceNode
;
1360 /* Call the action routine */
1361 Status
= (Context
->Action
)(ParentDeviceNode
, Context
->Context
);
1362 if (!NT_SUCCESS(Status
))
1367 /* Traversal of all children nodes */
1368 for (ChildDeviceNode
= ParentDeviceNode
->Child
;
1369 ChildDeviceNode
!= NULL
;
1370 ChildDeviceNode
= ChildDeviceNode
->Sibling
)
1372 /* Pass the current device node to the action routine */
1373 Context
->DeviceNode
= ChildDeviceNode
;
1375 Status
= IopTraverseDeviceTreeNode(Context
);
1376 if (!NT_SUCCESS(Status
))
1387 IopTraverseDeviceTree(PDEVICETREE_TRAVERSE_CONTEXT Context
)
1391 DPRINT("Context 0x%p\n", Context
);
1393 DPRINT("IopTraverseDeviceTree(DeviceNode 0x%p FirstDeviceNode 0x%p Action %p Context 0x%p)\n",
1394 Context
->DeviceNode
, Context
->FirstDeviceNode
, Context
->Action
, Context
->Context
);
1396 /* Start from the specified device node */
1397 Context
->DeviceNode
= Context
->FirstDeviceNode
;
1399 /* Recursively traverse the device tree */
1400 Status
= IopTraverseDeviceTreeNode(Context
);
1401 if (Status
== STATUS_UNSUCCESSFUL
)
1403 /* The action routine just wanted to terminate the traversal with status
1404 code STATUS_SUCCESS */
1405 Status
= STATUS_SUCCESS
;
1413 * IopCreateDeviceKeyPath
1415 * Creates a registry key
1419 * Name of the key to be created.
1421 * Handle to the newly created key
1424 * This method can create nested trees, so parent of RegistryPath can
1425 * be not existant, and will be created if needed.
1429 IopCreateDeviceKeyPath(IN PCUNICODE_STRING RegistryPath
,
1430 IN ULONG CreateOptions
,
1433 UNICODE_STRING EnumU
= RTL_CONSTANT_STRING(ENUM_ROOT
);
1434 HANDLE hParent
= NULL
, hKey
;
1435 OBJECT_ATTRIBUTES ObjectAttributes
;
1436 UNICODE_STRING KeyName
;
1437 LPCWSTR Current
, Last
;
1441 /* Assume failure */
1444 /* Create a volatile device tree in 1st stage so we have a clean slate
1445 * for enumeration using the correct HAL (chosen in 1st stage setup) */
1446 if (ExpInTextModeSetup
) CreateOptions
|= REG_OPTION_VOLATILE
;
1448 /* Open root key for device instances */
1449 Status
= IopOpenRegistryKeyEx(&hParent
, NULL
, &EnumU
, KEY_CREATE_SUB_KEY
);
1450 if (!NT_SUCCESS(Status
))
1452 DPRINT1("ZwOpenKey('%wZ') failed with status 0x%08lx\n", &EnumU
, Status
);
1456 Current
= KeyName
.Buffer
= RegistryPath
->Buffer
;
1457 Last
= &RegistryPath
->Buffer
[RegistryPath
->Length
/ sizeof(WCHAR
)];
1459 /* Go up to the end of the string */
1460 while (Current
<= Last
)
1462 if (Current
!= Last
&& *Current
!= '\\')
1464 /* Not the end of the string and not a separator */
1469 /* Prepare relative key name */
1470 Length
= (USHORT
)((ULONG_PTR
)Current
- (ULONG_PTR
)KeyName
.Buffer
);
1471 KeyName
.MaximumLength
= KeyName
.Length
= Length
;
1472 DPRINT("Create '%wZ'\n", &KeyName
);
1475 InitializeObjectAttributes(&ObjectAttributes
,
1477 OBJ_CASE_INSENSITIVE
| OBJ_KERNEL_HANDLE
,
1480 Status
= ZwCreateKey(&hKey
,
1481 Current
== Last
? KEY_ALL_ACCESS
: KEY_CREATE_SUB_KEY
,
1488 /* Close parent key handle, we don't need it anymore */
1492 /* Key opening/creating failed? */
1493 if (!NT_SUCCESS(Status
))
1495 DPRINT1("ZwCreateKey('%wZ') failed with status 0x%08lx\n", &KeyName
, Status
);
1499 /* Check if it is the end of the string */
1500 if (Current
== Last
)
1502 /* Yes, return success */
1504 return STATUS_SUCCESS
;
1507 /* Start with this new parent key */
1510 KeyName
.Buffer
= (LPWSTR
)Current
;
1513 return STATUS_UNSUCCESSFUL
;
1517 IopSetDeviceInstanceData(HANDLE InstanceKey
,
1518 PDEVICE_NODE DeviceNode
)
1520 OBJECT_ATTRIBUTES ObjectAttributes
;
1521 UNICODE_STRING KeyName
;
1526 HANDLE ControlHandle
;
1528 DPRINT("IopSetDeviceInstanceData() called\n");
1530 /* Create the 'LogConf' key */
1531 RtlInitUnicodeString(&KeyName
, L
"LogConf");
1532 InitializeObjectAttributes(&ObjectAttributes
,
1534 OBJ_CASE_INSENSITIVE
| OBJ_KERNEL_HANDLE
,
1537 Status
= ZwCreateKey(&LogConfKey
,
1542 REG_OPTION_VOLATILE
,
1544 if (NT_SUCCESS(Status
))
1546 /* Set 'BootConfig' value */
1547 if (DeviceNode
->BootResources
!= NULL
)
1549 ResCount
= DeviceNode
->BootResources
->Count
;
1552 RtlInitUnicodeString(&KeyName
, L
"BootConfig");
1553 Status
= ZwSetValueKey(LogConfKey
,
1557 DeviceNode
->BootResources
,
1558 PnpDetermineResourceListSize(DeviceNode
->BootResources
));
1562 /* Set 'BasicConfigVector' value */
1563 if (DeviceNode
->ResourceRequirements
!= NULL
&&
1564 DeviceNode
->ResourceRequirements
->ListSize
!= 0)
1566 RtlInitUnicodeString(&KeyName
, L
"BasicConfigVector");
1567 Status
= ZwSetValueKey(LogConfKey
,
1570 REG_RESOURCE_REQUIREMENTS_LIST
,
1571 DeviceNode
->ResourceRequirements
,
1572 DeviceNode
->ResourceRequirements
->ListSize
);
1575 ZwClose(LogConfKey
);
1578 /* Set the 'ConfigFlags' value */
1579 RtlInitUnicodeString(&KeyName
, L
"ConfigFlags");
1580 Status
= ZwQueryValueKey(InstanceKey
,
1582 KeyValueBasicInformation
,
1586 if (Status
== STATUS_OBJECT_NAME_NOT_FOUND
)
1588 /* Write the default value */
1589 ULONG DefaultConfigFlags
= 0;
1590 Status
= ZwSetValueKey(InstanceKey
,
1594 &DefaultConfigFlags
,
1595 sizeof(DefaultConfigFlags
));
1598 /* Create the 'Control' key */
1599 RtlInitUnicodeString(&KeyName
, L
"Control");
1600 InitializeObjectAttributes(&ObjectAttributes
,
1602 OBJ_CASE_INSENSITIVE
| OBJ_KERNEL_HANDLE
,
1605 Status
= ZwCreateKey(&ControlHandle
, 0, &ObjectAttributes
, 0, NULL
, REG_OPTION_VOLATILE
, NULL
);
1607 if (NT_SUCCESS(Status
))
1608 ZwClose(ControlHandle
);
1610 DPRINT("IopSetDeviceInstanceData() done\n");
1616 * IopGetParentIdPrefix
1618 * Retrieve (or create) a string which identifies a device.
1622 * Pointer to device node.
1624 * Pointer to the string where is returned the parent node identifier
1627 * If the return code is STATUS_SUCCESS, the ParentIdPrefix string is
1628 * valid and its Buffer field is NULL-terminated. The caller needs to
1629 * to free the string with RtlFreeUnicodeString when it is no longer
1634 IopGetParentIdPrefix(PDEVICE_NODE DeviceNode
,
1635 PUNICODE_STRING ParentIdPrefix
)
1637 ULONG KeyNameBufferLength
;
1638 PKEY_VALUE_PARTIAL_INFORMATION ParentIdPrefixInformation
= NULL
;
1639 UNICODE_STRING KeyName
= {0, 0, NULL
};
1640 UNICODE_STRING KeyValue
;
1641 UNICODE_STRING ValueName
;
1646 /* HACK: As long as some devices have a NULL device
1647 * instance path, the following test is required :(
1649 if (DeviceNode
->Parent
->InstancePath
.Length
== 0)
1651 DPRINT1("Parent of %wZ has NULL Instance path, please report!\n",
1652 &DeviceNode
->InstancePath
);
1653 return STATUS_UNSUCCESSFUL
;
1656 /* 1. Try to retrieve ParentIdPrefix from registry */
1657 KeyNameBufferLength
= FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION
, Data
[0]) + MAX_PATH
* sizeof(WCHAR
);
1658 ParentIdPrefixInformation
= ExAllocatePool(PagedPool
, KeyNameBufferLength
+ sizeof(WCHAR
));
1659 if (!ParentIdPrefixInformation
)
1661 return STATUS_INSUFFICIENT_RESOURCES
;
1664 KeyName
.Buffer
= ExAllocatePool(PagedPool
, (49 * sizeof(WCHAR
)) + DeviceNode
->Parent
->InstancePath
.Length
);
1665 if (!KeyName
.Buffer
)
1667 Status
= STATUS_INSUFFICIENT_RESOURCES
;
1671 KeyName
.MaximumLength
= (49 * sizeof(WCHAR
)) + DeviceNode
->Parent
->InstancePath
.Length
;
1673 RtlAppendUnicodeToString(&KeyName
, L
"\\Registry\\Machine\\System\\CurrentControlSet\\Enum\\");
1674 RtlAppendUnicodeStringToString(&KeyName
, &DeviceNode
->Parent
->InstancePath
);
1676 Status
= IopOpenRegistryKeyEx(&hKey
, NULL
, &KeyName
, KEY_QUERY_VALUE
| KEY_SET_VALUE
);
1677 if (!NT_SUCCESS(Status
))
1679 RtlInitUnicodeString(&ValueName
, L
"ParentIdPrefix");
1680 Status
= ZwQueryValueKey(
1682 KeyValuePartialInformation
, ParentIdPrefixInformation
,
1683 KeyNameBufferLength
, &KeyNameBufferLength
);
1684 if (NT_SUCCESS(Status
))
1686 if (ParentIdPrefixInformation
->Type
!= REG_SZ
)
1687 Status
= STATUS_UNSUCCESSFUL
;
1690 KeyValue
.Length
= KeyValue
.MaximumLength
= (USHORT
)ParentIdPrefixInformation
->DataLength
;
1691 KeyValue
.Buffer
= (PWSTR
)ParentIdPrefixInformation
->Data
;
1695 if (Status
!= STATUS_OBJECT_NAME_NOT_FOUND
)
1697 KeyValue
.Length
= KeyValue
.MaximumLength
= (USHORT
)ParentIdPrefixInformation
->DataLength
;
1698 KeyValue
.Buffer
= (PWSTR
)ParentIdPrefixInformation
->Data
;
1702 /* 2. Create the ParentIdPrefix value */
1703 crc32
= RtlComputeCrc32(0,
1704 (PUCHAR
)DeviceNode
->Parent
->InstancePath
.Buffer
,
1705 DeviceNode
->Parent
->InstancePath
.Length
);
1707 swprintf((PWSTR
)ParentIdPrefixInformation
->Data
, L
"%lx&%lx", DeviceNode
->Parent
->Level
, crc32
);
1708 RtlInitUnicodeString(&KeyValue
, (PWSTR
)ParentIdPrefixInformation
->Data
);
1710 /* 3. Try to write the ParentIdPrefix to registry */
1711 Status
= ZwSetValueKey(hKey
,
1715 (PVOID
)KeyValue
.Buffer
,
1716 ((ULONG
)wcslen(KeyValue
.Buffer
) + 1) * sizeof(WCHAR
));
1719 if (NT_SUCCESS(Status
))
1721 /* Duplicate the string to return it */
1722 Status
= RtlDuplicateUnicodeString(RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE
, &KeyValue
, ParentIdPrefix
);
1724 ExFreePool(ParentIdPrefixInformation
);
1725 RtlFreeUnicodeString(&KeyName
);
1732 IopQueryHardwareIds(PDEVICE_NODE DeviceNode
,
1735 IO_STACK_LOCATION Stack
;
1736 IO_STATUS_BLOCK IoStatusBlock
;
1738 UNICODE_STRING ValueName
;
1740 ULONG Length
, TotalLength
;
1742 DPRINT("Sending IRP_MN_QUERY_ID.BusQueryHardwareIDs to device stack\n");
1744 RtlZeroMemory(&Stack
, sizeof(Stack
));
1745 Stack
.Parameters
.QueryId
.IdType
= BusQueryHardwareIDs
;
1746 Status
= IopInitiatePnpIrp(DeviceNode
->PhysicalDeviceObject
,
1750 if (NT_SUCCESS(Status
))
1753 * FIXME: Check for valid characters, if there is invalid characters
1757 Ptr
= (PWSTR
)IoStatusBlock
.Information
;
1758 DPRINT("Hardware IDs:\n");
1761 DPRINT(" %S\n", Ptr
);
1762 Length
= (ULONG
)wcslen(Ptr
) + 1;
1765 TotalLength
+= Length
;
1767 DPRINT("TotalLength: %hu\n", TotalLength
);
1770 RtlInitUnicodeString(&ValueName
, L
"HardwareID");
1771 Status
= ZwSetValueKey(InstanceKey
,
1775 (PVOID
)IoStatusBlock
.Information
,
1776 (TotalLength
+ 1) * sizeof(WCHAR
));
1777 if (!NT_SUCCESS(Status
))
1779 DPRINT1("ZwSetValueKey() failed (Status %lx)\n", Status
);
1784 DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status
);
1791 IopQueryCompatibleIds(PDEVICE_NODE DeviceNode
,
1794 IO_STACK_LOCATION Stack
;
1795 IO_STATUS_BLOCK IoStatusBlock
;
1797 UNICODE_STRING ValueName
;
1799 ULONG Length
, TotalLength
;
1801 DPRINT("Sending IRP_MN_QUERY_ID.BusQueryCompatibleIDs to device stack\n");
1803 RtlZeroMemory(&Stack
, sizeof(Stack
));
1804 Stack
.Parameters
.QueryId
.IdType
= BusQueryCompatibleIDs
;
1805 Status
= IopInitiatePnpIrp(
1806 DeviceNode
->PhysicalDeviceObject
,
1810 if (NT_SUCCESS(Status
) && IoStatusBlock
.Information
)
1813 * FIXME: Check for valid characters, if there is invalid characters
1817 Ptr
= (PWSTR
)IoStatusBlock
.Information
;
1818 DPRINT("Compatible IDs:\n");
1821 DPRINT(" %S\n", Ptr
);
1822 Length
= (ULONG
)wcslen(Ptr
) + 1;
1825 TotalLength
+= Length
;
1827 DPRINT("TotalLength: %hu\n", TotalLength
);
1830 RtlInitUnicodeString(&ValueName
, L
"CompatibleIDs");
1831 Status
= ZwSetValueKey(InstanceKey
,
1835 (PVOID
)IoStatusBlock
.Information
,
1836 (TotalLength
+ 1) * sizeof(WCHAR
));
1837 if (!NT_SUCCESS(Status
))
1839 DPRINT1("ZwSetValueKey() failed (Status %lx) or no Compatible ID returned\n", Status
);
1844 DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status
);
1852 * IopActionInterrogateDeviceStack
1854 * Retrieve information for all (direct) child nodes of a parent node.
1858 * Pointer to device node.
1860 * Pointer to parent node to retrieve child node information for.
1863 * Any errors that occur are logged instead so that all child services have a chance
1864 * of being interrogated.
1868 IopActionInterrogateDeviceStack(PDEVICE_NODE DeviceNode
,
1871 IO_STATUS_BLOCK IoStatusBlock
;
1872 PWSTR InformationString
;
1873 PDEVICE_NODE ParentDeviceNode
;
1874 WCHAR InstancePath
[MAX_PATH
];
1875 IO_STACK_LOCATION Stack
;
1877 ULONG RequiredLength
;
1879 HANDLE InstanceKey
= NULL
;
1880 UNICODE_STRING ValueName
;
1881 UNICODE_STRING ParentIdPrefix
= { 0, 0, NULL
};
1882 UNICODE_STRING InstancePathU
;
1883 DEVICE_CAPABILITIES DeviceCapabilities
;
1884 PDEVICE_OBJECT OldDeviceObject
;
1886 DPRINT("IopActionInterrogateDeviceStack(%p, %p)\n", DeviceNode
, Context
);
1887 DPRINT("PDO 0x%p\n", DeviceNode
->PhysicalDeviceObject
);
1889 ParentDeviceNode
= (PDEVICE_NODE
)Context
;
1892 * We are called for the parent too, but we don't need to do special
1893 * handling for this node
1895 if (DeviceNode
== ParentDeviceNode
)
1897 DPRINT("Success\n");
1898 return STATUS_SUCCESS
;
1902 * Make sure this device node is a direct child of the parent device node
1903 * that is given as an argument
1905 if (DeviceNode
->Parent
!= ParentDeviceNode
)
1907 DPRINT("Skipping 2+ level child\n");
1908 return STATUS_SUCCESS
;
1911 /* Skip processing if it was already completed before */
1912 if (DeviceNode
->Flags
& DNF_PROCESSED
)
1915 return STATUS_SUCCESS
;
1919 Status
= ZwQueryDefaultLocale(FALSE
, &LocaleId
);
1920 if (!NT_SUCCESS(Status
))
1922 DPRINT1("ZwQueryDefaultLocale() failed with status 0x%lx\n", Status
);
1927 * FIXME: For critical errors, cleanup and disable device, but always
1928 * return STATUS_SUCCESS.
1931 DPRINT("Sending IRP_MN_QUERY_ID.BusQueryDeviceID to device stack\n");
1933 Stack
.Parameters
.QueryId
.IdType
= BusQueryDeviceID
;
1934 Status
= IopInitiatePnpIrp(DeviceNode
->PhysicalDeviceObject
,
1938 if (!NT_SUCCESS(Status
))
1940 DPRINT1("IopInitiatePnpIrp() failed (Status %x)\n", Status
);
1942 /* We have to return success otherwise we abort the traverse operation */
1943 return STATUS_SUCCESS
;
1946 /* Copy the device id string */
1947 InformationString
= (PWSTR
)IoStatusBlock
.Information
;
1948 wcscpy(InstancePath
, InformationString
);
1951 * FIXME: Check for valid characters, if there is invalid characters
1955 ExFreePoolWithTag(InformationString
, 0);
1957 DPRINT("Sending IRP_MN_QUERY_CAPABILITIES to device stack (after enumeration)\n");
1959 Status
= IopQueryDeviceCapabilities(DeviceNode
, &DeviceCapabilities
);
1960 if (!NT_SUCCESS(Status
))
1962 DPRINT1("IopInitiatePnpIrp() failed (Status 0x%08lx)\n", Status
);
1964 /* We have to return success otherwise we abort the traverse operation */
1965 return STATUS_SUCCESS
;
1968 /* This bit is only check after enumeration */
1969 if (DeviceCapabilities
.HardwareDisabled
)
1971 /* FIXME: Cleanup device */
1972 DeviceNode
->Flags
|= DNF_DISABLED
;
1973 return STATUS_SUCCESS
;
1977 DeviceNode
->Flags
&= ~DNF_DISABLED
;
1980 if (!DeviceCapabilities
.UniqueID
)
1982 /* Device has not a unique ID. We need to prepend parent bus unique identifier */
1983 DPRINT("Instance ID is not unique\n");
1984 Status
= IopGetParentIdPrefix(DeviceNode
, &ParentIdPrefix
);
1985 if (!NT_SUCCESS(Status
))
1987 DPRINT1("IopGetParentIdPrefix() failed (Status 0x%08lx)\n", Status
);
1989 /* We have to return success otherwise we abort the traverse operation */
1990 return STATUS_SUCCESS
;
1994 DPRINT("Sending IRP_MN_QUERY_ID.BusQueryInstanceID to device stack\n");
1996 Stack
.Parameters
.QueryId
.IdType
= BusQueryInstanceID
;
1997 Status
= IopInitiatePnpIrp(DeviceNode
->PhysicalDeviceObject
,
2001 if (NT_SUCCESS(Status
))
2003 InformationString
= (PWSTR
)IoStatusBlock
.Information
;
2005 /* Append the instance id string */
2006 wcscat(InstancePath
, L
"\\");
2007 if (ParentIdPrefix
.Length
> 0)
2009 /* Add information from parent bus device to InstancePath */
2010 wcscat(InstancePath
, ParentIdPrefix
.Buffer
);
2011 if (InformationString
&& *InformationString
)
2013 wcscat(InstancePath
, L
"&");
2016 if (InformationString
)
2018 wcscat(InstancePath
, InformationString
);
2022 * FIXME: Check for valid characters, if there is invalid characters
2026 if (InformationString
)
2028 ExFreePoolWithTag(InformationString
, 0);
2033 DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status
);
2035 RtlFreeUnicodeString(&ParentIdPrefix
);
2037 if (!RtlCreateUnicodeString(&InstancePathU
, InstancePath
))
2039 DPRINT("No resources\n");
2040 /* FIXME: Cleanup and disable device */
2043 /* Verify that this is not a duplicate */
2044 OldDeviceObject
= IopGetDeviceObjectFromDeviceInstance(&InstancePathU
);
2045 if (OldDeviceObject
!= NULL
)
2047 PDEVICE_NODE OldDeviceNode
= IopGetDeviceNode(OldDeviceObject
);
2049 DPRINT1("Duplicate device instance '%wZ'\n", &InstancePathU
);
2050 DPRINT1("Current instance parent: '%wZ'\n", &DeviceNode
->Parent
->InstancePath
);
2051 DPRINT1("Old instance parent: '%wZ'\n", &OldDeviceNode
->Parent
->InstancePath
);
2053 KeBugCheckEx(PNP_DETECTED_FATAL_ERROR
,
2055 (ULONG_PTR
)DeviceNode
->PhysicalDeviceObject
,
2056 (ULONG_PTR
)OldDeviceObject
,
2060 DeviceNode
->InstancePath
= InstancePathU
;
2062 DPRINT("InstancePath is %S\n", DeviceNode
->InstancePath
.Buffer
);
2065 * Create registry key for the instance id, if it doesn't exist yet
2067 Status
= IopCreateDeviceKeyPath(&DeviceNode
->InstancePath
, 0, &InstanceKey
);
2068 if (!NT_SUCCESS(Status
))
2070 DPRINT1("Failed to create the instance key! (Status %lx)\n", Status
);
2072 /* We have to return success otherwise we abort the traverse operation */
2073 return STATUS_SUCCESS
;
2076 IopQueryHardwareIds(DeviceNode
, InstanceKey
);
2078 IopQueryCompatibleIds(DeviceNode
, InstanceKey
);
2080 DPRINT("Sending IRP_MN_QUERY_DEVICE_TEXT.DeviceTextDescription to device stack\n");
2082 Stack
.Parameters
.QueryDeviceText
.DeviceTextType
= DeviceTextDescription
;
2083 Stack
.Parameters
.QueryDeviceText
.LocaleId
= LocaleId
;
2084 Status
= IopInitiatePnpIrp(DeviceNode
->PhysicalDeviceObject
,
2086 IRP_MN_QUERY_DEVICE_TEXT
,
2088 InformationString
= NT_SUCCESS(Status
) ? (PWSTR
)IoStatusBlock
.Information
2090 /* This key is mandatory, so even if the Irp fails, we still write it */
2091 RtlInitUnicodeString(&ValueName
, L
"DeviceDesc");
2092 if (ZwQueryValueKey(InstanceKey
, &ValueName
, KeyValueBasicInformation
, NULL
, 0, &RequiredLength
) == STATUS_OBJECT_NAME_NOT_FOUND
)
2094 if (InformationString
&&
2095 *InformationString
!= UNICODE_NULL
)
2097 /* This key is overriden when a driver is installed. Don't write the
2098 * new description if another one already exists */
2099 Status
= ZwSetValueKey(InstanceKey
,
2104 ((ULONG
)wcslen(InformationString
) + 1) * sizeof(WCHAR
));
2108 UNICODE_STRING DeviceDesc
= RTL_CONSTANT_STRING(L
"Unknown device");
2109 DPRINT("Driver didn't return DeviceDesc (Status 0x%08lx), so place unknown device there\n", Status
);
2111 Status
= ZwSetValueKey(InstanceKey
,
2116 DeviceDesc
.MaximumLength
);
2117 if (!NT_SUCCESS(Status
))
2119 DPRINT1("ZwSetValueKey() failed (Status 0x%lx)\n", Status
);
2125 if (InformationString
)
2127 ExFreePoolWithTag(InformationString
, 0);
2130 DPRINT("Sending IRP_MN_QUERY_DEVICE_TEXT.DeviceTextLocation to device stack\n");
2132 Stack
.Parameters
.QueryDeviceText
.DeviceTextType
= DeviceTextLocationInformation
;
2133 Stack
.Parameters
.QueryDeviceText
.LocaleId
= LocaleId
;
2134 Status
= IopInitiatePnpIrp(DeviceNode
->PhysicalDeviceObject
,
2136 IRP_MN_QUERY_DEVICE_TEXT
,
2138 if (NT_SUCCESS(Status
) && IoStatusBlock
.Information
)
2140 InformationString
= (PWSTR
)IoStatusBlock
.Information
;
2141 DPRINT("LocationInformation: %S\n", InformationString
);
2142 RtlInitUnicodeString(&ValueName
, L
"LocationInformation");
2143 Status
= ZwSetValueKey(InstanceKey
,
2148 ((ULONG
)wcslen(InformationString
) + 1) * sizeof(WCHAR
));
2149 if (!NT_SUCCESS(Status
))
2151 DPRINT1("ZwSetValueKey() failed (Status %lx)\n", Status
);
2154 ExFreePoolWithTag(InformationString
, 0);
2158 DPRINT("IopInitiatePnpIrp() failed (Status %x) or IoStatusBlock.Information=NULL\n", Status
);
2161 DPRINT("Sending IRP_MN_QUERY_BUS_INFORMATION to device stack\n");
2163 Status
= IopInitiatePnpIrp(DeviceNode
->PhysicalDeviceObject
,
2165 IRP_MN_QUERY_BUS_INFORMATION
,
2167 if (NT_SUCCESS(Status
) && IoStatusBlock
.Information
)
2169 PPNP_BUS_INFORMATION BusInformation
= (PPNP_BUS_INFORMATION
)IoStatusBlock
.Information
;
2171 DeviceNode
->ChildBusNumber
= BusInformation
->BusNumber
;
2172 DeviceNode
->ChildInterfaceType
= BusInformation
->LegacyBusType
;
2173 DeviceNode
->ChildBusTypeIndex
= IopGetBusTypeGuidIndex(&BusInformation
->BusTypeGuid
);
2174 ExFreePoolWithTag(BusInformation
, 0);
2178 DPRINT("IopInitiatePnpIrp() failed (Status %x) or IoStatusBlock.Information=NULL\n", Status
);
2180 DeviceNode
->ChildBusNumber
= 0xFFFFFFF0;
2181 DeviceNode
->ChildInterfaceType
= InterfaceTypeUndefined
;
2182 DeviceNode
->ChildBusTypeIndex
= -1;
2185 DPRINT("Sending IRP_MN_QUERY_RESOURCES to device stack\n");
2187 Status
= IopInitiatePnpIrp(DeviceNode
->PhysicalDeviceObject
,
2189 IRP_MN_QUERY_RESOURCES
,
2191 if (NT_SUCCESS(Status
) && IoStatusBlock
.Information
)
2193 DeviceNode
->BootResources
= (PCM_RESOURCE_LIST
)IoStatusBlock
.Information
;
2194 IopDeviceNodeSetFlag(DeviceNode
, DNF_HAS_BOOT_CONFIG
);
2198 DPRINT("IopInitiatePnpIrp() failed (Status %x) or IoStatusBlock.Information=NULL\n", Status
);
2199 DeviceNode
->BootResources
= NULL
;
2202 DPRINT("Sending IRP_MN_QUERY_RESOURCE_REQUIREMENTS to device stack\n");
2204 Status
= IopInitiatePnpIrp(DeviceNode
->PhysicalDeviceObject
,
2206 IRP_MN_QUERY_RESOURCE_REQUIREMENTS
,
2208 if (NT_SUCCESS(Status
))
2210 DeviceNode
->ResourceRequirements
= (PIO_RESOURCE_REQUIREMENTS_LIST
)IoStatusBlock
.Information
;
2214 DPRINT("IopInitiatePnpIrp() failed (Status %08lx)\n", Status
);
2215 DeviceNode
->ResourceRequirements
= NULL
;
2218 if (InstanceKey
!= NULL
)
2220 IopSetDeviceInstanceData(InstanceKey
, DeviceNode
);
2223 ZwClose(InstanceKey
);
2225 IopDeviceNodeSetFlag(DeviceNode
, DNF_PROCESSED
);
2227 if (!IopDeviceNodeHasFlag(DeviceNode
, DNF_LEGACY_DRIVER
))
2229 /* Report the device to the user-mode pnp manager */
2230 IopQueueTargetDeviceEvent(&GUID_DEVICE_ENUMERATED
,
2231 &DeviceNode
->InstancePath
);
2234 return STATUS_SUCCESS
;
2239 IopHandleDeviceRemoval(
2240 IN PDEVICE_NODE DeviceNode
,
2241 IN PDEVICE_RELATIONS DeviceRelations
)
2243 PDEVICE_NODE Child
= DeviceNode
->Child
, NextChild
;
2247 if (DeviceNode
== IopRootDeviceNode
)
2250 while (Child
!= NULL
)
2252 NextChild
= Child
->Sibling
;
2255 for (i
= 0; DeviceRelations
&& i
< DeviceRelations
->Count
; i
++)
2257 if (IopGetDeviceNode(DeviceRelations
->Objects
[i
]) == Child
)
2264 if (!Found
&& !(Child
->Flags
& DNF_WILL_BE_REMOVED
))
2266 /* Send removal IRPs to all of its children */
2267 IopPrepareDeviceForRemoval(Child
->PhysicalDeviceObject
, TRUE
);
2269 /* Send the surprise removal IRP */
2270 IopSendSurpriseRemoval(Child
->PhysicalDeviceObject
);
2272 /* Tell the user-mode PnP manager that a device was removed */
2273 IopQueueTargetDeviceEvent(&GUID_DEVICE_SURPRISE_REMOVAL
,
2274 &Child
->InstancePath
);
2276 /* Send the remove device IRP */
2277 IopSendRemoveDevice(Child
->PhysicalDeviceObject
);
2286 IN PDEVICE_OBJECT DeviceObject
)
2288 PDEVICE_NODE DeviceNode
= IopGetDeviceNode(DeviceObject
);
2289 DEVICETREE_TRAVERSE_CONTEXT Context
;
2290 PDEVICE_RELATIONS DeviceRelations
;
2291 PDEVICE_OBJECT ChildDeviceObject
;
2292 IO_STATUS_BLOCK IoStatusBlock
;
2293 PDEVICE_NODE ChildDeviceNode
;
2294 IO_STACK_LOCATION Stack
;
2298 DPRINT("DeviceObject 0x%p\n", DeviceObject
);
2300 if (DeviceNode
->Flags
& DNF_NEED_ENUMERATION_ONLY
)
2302 DeviceNode
->Flags
&= ~DNF_NEED_ENUMERATION_ONLY
;
2304 DPRINT("Sending GUID_DEVICE_ARRIVAL\n");
2305 IopQueueTargetDeviceEvent(&GUID_DEVICE_ARRIVAL
,
2306 &DeviceNode
->InstancePath
);
2309 DPRINT("Sending IRP_MN_QUERY_DEVICE_RELATIONS to device stack\n");
2311 Stack
.Parameters
.QueryDeviceRelations
.Type
= BusRelations
;
2313 Status
= IopInitiatePnpIrp(
2316 IRP_MN_QUERY_DEVICE_RELATIONS
,
2318 if (!NT_SUCCESS(Status
) || Status
== STATUS_PENDING
)
2320 DPRINT("IopInitiatePnpIrp() failed with status 0x%08lx\n", Status
);
2324 DeviceRelations
= (PDEVICE_RELATIONS
)IoStatusBlock
.Information
;
2327 * Send removal IRPs for devices that have disappeared
2328 * NOTE: This code handles the case where no relations are specified
2330 IopHandleDeviceRemoval(DeviceNode
, DeviceRelations
);
2332 /* Now we bail if nothing was returned */
2333 if (!DeviceRelations
)
2335 /* We're all done */
2336 DPRINT("No PDOs\n");
2337 return STATUS_SUCCESS
;
2340 DPRINT("Got %u PDOs\n", DeviceRelations
->Count
);
2343 * Create device nodes for all discovered devices
2345 for (i
= 0; i
< DeviceRelations
->Count
; i
++)
2347 ChildDeviceObject
= DeviceRelations
->Objects
[i
];
2348 ASSERT((ChildDeviceObject
->Flags
& DO_DEVICE_INITIALIZING
) == 0);
2350 ChildDeviceNode
= IopGetDeviceNode(ChildDeviceObject
);
2351 if (!ChildDeviceNode
)
2353 /* One doesn't exist, create it */
2354 Status
= IopCreateDeviceNode(
2359 if (NT_SUCCESS(Status
))
2361 /* Mark the node as enumerated */
2362 ChildDeviceNode
->Flags
|= DNF_ENUMERATED
;
2364 /* Mark the DO as bus enumerated */
2365 ChildDeviceObject
->Flags
|= DO_BUS_ENUMERATED_DEVICE
;
2369 /* Ignore this DO */
2370 DPRINT1("IopCreateDeviceNode() failed with status 0x%08x. Skipping PDO %u\n", Status
, i
);
2371 ObDereferenceObject(ChildDeviceObject
);
2376 /* Mark it as enumerated */
2377 ChildDeviceNode
->Flags
|= DNF_ENUMERATED
;
2378 ObDereferenceObject(ChildDeviceObject
);
2381 ExFreePool(DeviceRelations
);
2384 * Retrieve information about all discovered children from the bus driver
2386 IopInitDeviceTreeTraverseContext(
2389 IopActionInterrogateDeviceStack
,
2392 Status
= IopTraverseDeviceTree(&Context
);
2393 if (!NT_SUCCESS(Status
))
2395 DPRINT("IopTraverseDeviceTree() failed with status 0x%08lx\n", Status
);
2400 * Retrieve configuration from the registry for discovered children
2402 IopInitDeviceTreeTraverseContext(
2405 IopActionConfigureChildServices
,
2408 Status
= IopTraverseDeviceTree(&Context
);
2409 if (!NT_SUCCESS(Status
))
2411 DPRINT("IopTraverseDeviceTree() failed with status 0x%08lx\n", Status
);
2416 * Initialize services for discovered children.
2418 Status
= IopInitializePnpServices(DeviceNode
);
2419 if (!NT_SUCCESS(Status
))
2421 DPRINT("IopInitializePnpServices() failed with status 0x%08lx\n", Status
);
2425 DPRINT("IopEnumerateDevice() finished\n");
2426 return STATUS_SUCCESS
;
2431 * IopActionConfigureChildServices
2433 * Retrieve configuration for all (direct) child nodes of a parent node.
2437 * Pointer to device node.
2439 * Pointer to parent node to retrieve child node configuration for.
2442 * Any errors that occur are logged instead so that all child services have a chance of beeing
2447 IopActionConfigureChildServices(PDEVICE_NODE DeviceNode
,
2450 RTL_QUERY_REGISTRY_TABLE QueryTable
[3];
2451 PDEVICE_NODE ParentDeviceNode
;
2452 PUNICODE_STRING Service
;
2453 UNICODE_STRING ClassGUID
;
2455 DEVICE_CAPABILITIES DeviceCaps
;
2457 DPRINT("IopActionConfigureChildServices(%p, %p)\n", DeviceNode
, Context
);
2459 ParentDeviceNode
= (PDEVICE_NODE
)Context
;
2462 * We are called for the parent too, but we don't need to do special
2463 * handling for this node
2465 if (DeviceNode
== ParentDeviceNode
)
2467 DPRINT("Success\n");
2468 return STATUS_SUCCESS
;
2472 * Make sure this device node is a direct child of the parent device node
2473 * that is given as an argument
2476 if (DeviceNode
->Parent
!= ParentDeviceNode
)
2478 DPRINT("Skipping 2+ level child\n");
2479 return STATUS_SUCCESS
;
2482 if (!(DeviceNode
->Flags
& DNF_PROCESSED
))
2484 DPRINT1("Child not ready to be configured\n");
2485 return STATUS_SUCCESS
;
2488 if (!(DeviceNode
->Flags
& (DNF_DISABLED
| DNF_STARTED
| DNF_ADDED
)))
2490 WCHAR RegKeyBuffer
[MAX_PATH
];
2491 UNICODE_STRING RegKey
;
2493 /* Install the service for this if it's in the CDDB */
2494 IopInstallCriticalDevice(DeviceNode
);
2497 RegKey
.MaximumLength
= sizeof(RegKeyBuffer
);
2498 RegKey
.Buffer
= RegKeyBuffer
;
2501 * Retrieve configuration from Enum key
2504 Service
= &DeviceNode
->ServiceName
;
2506 RtlZeroMemory(QueryTable
, sizeof(QueryTable
));
2507 RtlInitUnicodeString(Service
, NULL
);
2508 RtlInitUnicodeString(&ClassGUID
, NULL
);
2510 QueryTable
[0].Name
= L
"Service";
2511 QueryTable
[0].Flags
= RTL_QUERY_REGISTRY_DIRECT
;
2512 QueryTable
[0].EntryContext
= Service
;
2514 QueryTable
[1].Name
= L
"ClassGUID";
2515 QueryTable
[1].Flags
= RTL_QUERY_REGISTRY_DIRECT
;
2516 QueryTable
[1].EntryContext
= &ClassGUID
;
2517 QueryTable
[1].DefaultType
= REG_SZ
;
2518 QueryTable
[1].DefaultData
= L
"";
2519 QueryTable
[1].DefaultLength
= 0;
2521 RtlAppendUnicodeToString(&RegKey
, L
"\\Registry\\Machine\\System\\CurrentControlSet\\Enum\\");
2522 RtlAppendUnicodeStringToString(&RegKey
, &DeviceNode
->InstancePath
);
2524 Status
= RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE
,
2525 RegKey
.Buffer
, QueryTable
, NULL
, NULL
);
2527 if (!NT_SUCCESS(Status
))
2529 /* FIXME: Log the error */
2530 DPRINT("Could not retrieve configuration for device %wZ (Status 0x%08x)\n",
2531 &DeviceNode
->InstancePath
, Status
);
2532 IopDeviceNodeSetFlag(DeviceNode
, DNF_DISABLED
);
2533 return STATUS_SUCCESS
;
2536 if (Service
->Buffer
== NULL
)
2538 if (NT_SUCCESS(IopQueryDeviceCapabilities(DeviceNode
, &DeviceCaps
)) &&
2539 DeviceCaps
.RawDeviceOK
)
2541 DPRINT("%wZ is using parent bus driver (%wZ)\n", &DeviceNode
->InstancePath
, &ParentDeviceNode
->ServiceName
);
2543 DeviceNode
->ServiceName
.Length
= 0;
2544 DeviceNode
->ServiceName
.MaximumLength
= 0;
2545 DeviceNode
->ServiceName
.Buffer
= NULL
;
2547 else if (ClassGUID
.Length
!= 0)
2549 /* Device has a ClassGUID value, but no Service value.
2550 * Suppose it is using the NULL driver, so state the
2551 * device is started */
2552 DPRINT("%wZ is using NULL driver\n", &DeviceNode
->InstancePath
);
2553 IopDeviceNodeSetFlag(DeviceNode
, DNF_STARTED
);
2557 DeviceNode
->Problem
= CM_PROB_FAILED_INSTALL
;
2558 IopDeviceNodeSetFlag(DeviceNode
, DNF_DISABLED
);
2560 return STATUS_SUCCESS
;
2563 DPRINT("Got Service %S\n", Service
->Buffer
);
2566 return STATUS_SUCCESS
;
2570 * IopActionInitChildServices
2572 * Initialize the service for all (direct) child nodes of a parent node
2576 * Pointer to device node.
2578 * Pointer to parent node to initialize child node services for.
2581 * If the driver image for a service is not loaded and initialized
2582 * it is done here too. Any errors that occur are logged instead so
2583 * that all child services have a chance of being initialized.
2587 IopActionInitChildServices(PDEVICE_NODE DeviceNode
,
2590 PDEVICE_NODE ParentDeviceNode
;
2592 BOOLEAN BootDrivers
= !PnpSystemInit
;
2594 DPRINT("IopActionInitChildServices(%p, %p)\n", DeviceNode
, Context
);
2596 ParentDeviceNode
= Context
;
2599 * We are called for the parent too, but we don't need to do special
2600 * handling for this node
2602 if (DeviceNode
== ParentDeviceNode
)
2604 DPRINT("Success\n");
2605 return STATUS_SUCCESS
;
2609 * We don't want to check for a direct child because
2610 * this function is called during boot to reinitialize
2611 * devices with drivers that couldn't load yet due to
2612 * stage 0 limitations (ie can't load from disk yet).
2615 if (!(DeviceNode
->Flags
& DNF_PROCESSED
))
2617 DPRINT1("Child not ready to be added\n");
2618 return STATUS_SUCCESS
;
2621 if (IopDeviceNodeHasFlag(DeviceNode
, DNF_STARTED
) ||
2622 IopDeviceNodeHasFlag(DeviceNode
, DNF_ADDED
) ||
2623 IopDeviceNodeHasFlag(DeviceNode
, DNF_DISABLED
))
2624 return STATUS_SUCCESS
;
2626 if (DeviceNode
->ServiceName
.Buffer
== NULL
)
2628 /* We don't need to worry about loading the driver because we're
2629 * being driven in raw mode so our parent must be loaded to get here */
2630 Status
= IopInitializeDevice(DeviceNode
, NULL
);
2631 if (NT_SUCCESS(Status
))
2633 Status
= IopStartDevice(DeviceNode
);
2634 if (!NT_SUCCESS(Status
))
2636 DPRINT1("IopStartDevice(%wZ) failed with status 0x%08x\n",
2637 &DeviceNode
->InstancePath
, Status
);
2643 PLDR_DATA_TABLE_ENTRY ModuleObject
;
2644 PDRIVER_OBJECT DriverObject
;
2646 KeEnterCriticalRegion();
2647 ExAcquireResourceExclusiveLite(&IopDriverLoadResource
, TRUE
);
2648 /* Get existing DriverObject pointer (in case the driver has
2649 already been loaded and initialized) */
2650 Status
= IopGetDriverObject(
2652 &DeviceNode
->ServiceName
,
2655 if (!NT_SUCCESS(Status
))
2657 /* Driver is not initialized, try to load it */
2658 Status
= IopLoadServiceModule(&DeviceNode
->ServiceName
, &ModuleObject
);
2660 if (NT_SUCCESS(Status
) || Status
== STATUS_IMAGE_ALREADY_LOADED
)
2662 /* Initialize the driver */
2663 Status
= IopInitializeDriverModule(DeviceNode
, ModuleObject
,
2664 &DeviceNode
->ServiceName
, FALSE
, &DriverObject
);
2665 if (!NT_SUCCESS(Status
)) DeviceNode
->Problem
= CM_PROB_FAILED_DRIVER_ENTRY
;
2667 else if (Status
== STATUS_DRIVER_UNABLE_TO_LOAD
)
2669 DPRINT1("Service '%wZ' is disabled\n", &DeviceNode
->ServiceName
);
2670 DeviceNode
->Problem
= CM_PROB_DISABLED_SERVICE
;
2674 DPRINT("IopLoadServiceModule(%wZ) failed with status 0x%08x\n",
2675 &DeviceNode
->ServiceName
, Status
);
2676 if (!BootDrivers
) DeviceNode
->Problem
= CM_PROB_DRIVER_FAILED_LOAD
;
2679 ExReleaseResourceLite(&IopDriverLoadResource
);
2680 KeLeaveCriticalRegion();
2682 /* Driver is loaded and initialized at this point */
2683 if (NT_SUCCESS(Status
))
2685 /* Initialize the device, including all filters */
2686 Status
= PipCallDriverAddDevice(DeviceNode
, FALSE
, DriverObject
);
2688 /* Remove the extra reference */
2689 ObDereferenceObject(DriverObject
);
2694 * Don't disable when trying to load only boot drivers
2698 IopDeviceNodeSetFlag(DeviceNode
, DNF_DISABLED
);
2703 return STATUS_SUCCESS
;
2707 * IopInitializePnpServices
2709 * Initialize services for discovered children
2713 * Top device node to start initializing services.
2719 IopInitializePnpServices(IN PDEVICE_NODE DeviceNode
)
2721 DEVICETREE_TRAVERSE_CONTEXT Context
;
2723 DPRINT("IopInitializePnpServices(%p)\n", DeviceNode
);
2725 IopInitDeviceTreeTraverseContext(
2728 IopActionInitChildServices
,
2731 return IopTraverseDeviceTree(&Context
);
2734 static NTSTATUS INIT_FUNCTION
2735 IopEnumerateDetectedDevices(
2737 IN PUNICODE_STRING RelativePath OPTIONAL
,
2739 IN BOOLEAN EnumerateSubKeys
,
2740 IN PCM_FULL_RESOURCE_DESCRIPTOR ParentBootResources
,
2741 IN ULONG ParentBootResourcesLength
)
2743 UNICODE_STRING IdentifierU
= RTL_CONSTANT_STRING(L
"Identifier");
2744 UNICODE_STRING HardwareIDU
= RTL_CONSTANT_STRING(L
"HardwareID");
2745 UNICODE_STRING ConfigurationDataU
= RTL_CONSTANT_STRING(L
"Configuration Data");
2746 UNICODE_STRING BootConfigU
= RTL_CONSTANT_STRING(L
"BootConfig");
2747 UNICODE_STRING LogConfU
= RTL_CONSTANT_STRING(L
"LogConf");
2748 OBJECT_ATTRIBUTES ObjectAttributes
;
2749 HANDLE hDevicesKey
= NULL
;
2750 HANDLE hDeviceKey
= NULL
;
2751 HANDLE hLevel1Key
, hLevel2Key
= NULL
, hLogConf
;
2752 UNICODE_STRING Level2NameU
;
2753 WCHAR Level2Name
[5];
2754 ULONG IndexDevice
= 0;
2756 PKEY_BASIC_INFORMATION pDeviceInformation
= NULL
;
2757 ULONG DeviceInfoLength
= sizeof(KEY_BASIC_INFORMATION
) + 50 * sizeof(WCHAR
);
2758 PKEY_VALUE_PARTIAL_INFORMATION pValueInformation
= NULL
;
2759 ULONG ValueInfoLength
= sizeof(KEY_VALUE_PARTIAL_INFORMATION
) + 50 * sizeof(WCHAR
);
2760 UNICODE_STRING DeviceName
, ValueName
;
2762 PCM_FULL_RESOURCE_DESCRIPTOR BootResources
= NULL
;
2763 ULONG BootResourcesLength
;
2766 const UNICODE_STRING IdentifierSerial
= RTL_CONSTANT_STRING(L
"SerialController");
2767 UNICODE_STRING HardwareIdSerial
= RTL_CONSTANT_STRING(L
"*PNP0501\0");
2768 static ULONG DeviceIndexSerial
= 0;
2769 const UNICODE_STRING IdentifierKeyboard
= RTL_CONSTANT_STRING(L
"KeyboardController");
2770 UNICODE_STRING HardwareIdKeyboard
= RTL_CONSTANT_STRING(L
"*PNP0303\0");
2771 static ULONG DeviceIndexKeyboard
= 0;
2772 const UNICODE_STRING IdentifierMouse
= RTL_CONSTANT_STRING(L
"PointerController");
2773 UNICODE_STRING HardwareIdMouse
= RTL_CONSTANT_STRING(L
"*PNP0F13\0");
2774 static ULONG DeviceIndexMouse
= 0;
2775 const UNICODE_STRING IdentifierParallel
= RTL_CONSTANT_STRING(L
"ParallelController");
2776 UNICODE_STRING HardwareIdParallel
= RTL_CONSTANT_STRING(L
"*PNP0400\0");
2777 static ULONG DeviceIndexParallel
= 0;
2778 const UNICODE_STRING IdentifierFloppy
= RTL_CONSTANT_STRING(L
"FloppyDiskPeripheral");
2779 UNICODE_STRING HardwareIdFloppy
= RTL_CONSTANT_STRING(L
"*PNP0700\0");
2780 static ULONG DeviceIndexFloppy
= 0;
2781 UNICODE_STRING HardwareIdKey
;
2782 PUNICODE_STRING pHardwareId
;
2783 ULONG DeviceIndex
= 0;
2784 PUCHAR CmResourceList
;
2789 Status
= IopOpenRegistryKeyEx(&hDevicesKey
, hBaseKey
, RelativePath
, KEY_ENUMERATE_SUB_KEYS
);
2790 if (!NT_SUCCESS(Status
))
2792 DPRINT("ZwOpenKey() failed with status 0x%08lx\n", Status
);
2797 hDevicesKey
= hBaseKey
;
2799 pDeviceInformation
= ExAllocatePool(PagedPool
, DeviceInfoLength
);
2800 if (!pDeviceInformation
)
2802 DPRINT("ExAllocatePool() failed\n");
2803 Status
= STATUS_NO_MEMORY
;
2807 pValueInformation
= ExAllocatePool(PagedPool
, ValueInfoLength
);
2808 if (!pValueInformation
)
2810 DPRINT("ExAllocatePool() failed\n");
2811 Status
= STATUS_NO_MEMORY
;
2817 Status
= ZwEnumerateKey(hDevicesKey
, IndexDevice
, KeyBasicInformation
, pDeviceInformation
, DeviceInfoLength
, &RequiredSize
);
2818 if (Status
== STATUS_NO_MORE_ENTRIES
)
2820 else if (Status
== STATUS_BUFFER_OVERFLOW
|| Status
== STATUS_BUFFER_TOO_SMALL
)
2822 ExFreePool(pDeviceInformation
);
2823 DeviceInfoLength
= RequiredSize
;
2824 pDeviceInformation
= ExAllocatePool(PagedPool
, DeviceInfoLength
);
2825 if (!pDeviceInformation
)
2827 DPRINT("ExAllocatePool() failed\n");
2828 Status
= STATUS_NO_MEMORY
;
2831 Status
= ZwEnumerateKey(hDevicesKey
, IndexDevice
, KeyBasicInformation
, pDeviceInformation
, DeviceInfoLength
, &RequiredSize
);
2833 if (!NT_SUCCESS(Status
))
2835 DPRINT("ZwEnumerateKey() failed with status 0x%08lx\n", Status
);
2840 /* Open device key */
2841 DeviceName
.Length
= DeviceName
.MaximumLength
= (USHORT
)pDeviceInformation
->NameLength
;
2842 DeviceName
.Buffer
= pDeviceInformation
->Name
;
2844 Status
= IopOpenRegistryKeyEx(&hDeviceKey
, hDevicesKey
, &DeviceName
,
2845 KEY_QUERY_VALUE
+ (EnumerateSubKeys
? KEY_ENUMERATE_SUB_KEYS
: 0));
2846 if (!NT_SUCCESS(Status
))
2848 DPRINT("ZwOpenKey() failed with status 0x%08lx\n", Status
);
2852 /* Read boot resources, and add then to parent ones */
2853 Status
= ZwQueryValueKey(hDeviceKey
, &ConfigurationDataU
, KeyValuePartialInformation
, pValueInformation
, ValueInfoLength
, &RequiredSize
);
2854 if (Status
== STATUS_BUFFER_OVERFLOW
|| Status
== STATUS_BUFFER_TOO_SMALL
)
2856 ExFreePool(pValueInformation
);
2857 ValueInfoLength
= RequiredSize
;
2858 pValueInformation
= ExAllocatePool(PagedPool
, ValueInfoLength
);
2859 if (!pValueInformation
)
2861 DPRINT("ExAllocatePool() failed\n");
2862 ZwDeleteKey(hLevel2Key
);
2863 Status
= STATUS_NO_MEMORY
;
2866 Status
= ZwQueryValueKey(hDeviceKey
, &ConfigurationDataU
, KeyValuePartialInformation
, pValueInformation
, ValueInfoLength
, &RequiredSize
);
2868 if (Status
== STATUS_OBJECT_NAME_NOT_FOUND
)
2870 BootResources
= ParentBootResources
;
2871 BootResourcesLength
= ParentBootResourcesLength
;
2873 else if (!NT_SUCCESS(Status
))
2875 DPRINT("ZwQueryValueKey() failed with status 0x%08lx\n", Status
);
2878 else if (pValueInformation
->Type
!= REG_FULL_RESOURCE_DESCRIPTOR
)
2880 DPRINT("Wrong registry type: got 0x%lx, expected 0x%lx\n", pValueInformation
->Type
, REG_FULL_RESOURCE_DESCRIPTOR
);
2885 static const ULONG Header
= FIELD_OFFSET(CM_FULL_RESOURCE_DESCRIPTOR
, PartialResourceList
.PartialDescriptors
);
2887 /* Concatenate current resources and parent ones */
2888 if (ParentBootResourcesLength
== 0)
2889 BootResourcesLength
= pValueInformation
->DataLength
;
2891 BootResourcesLength
= ParentBootResourcesLength
2892 + pValueInformation
->DataLength
2894 BootResources
= ExAllocatePool(PagedPool
, BootResourcesLength
);
2897 DPRINT("ExAllocatePool() failed\n");
2900 if (ParentBootResourcesLength
< sizeof(CM_FULL_RESOURCE_DESCRIPTOR
))
2902 RtlCopyMemory(BootResources
, pValueInformation
->Data
, pValueInformation
->DataLength
);
2904 else if (ParentBootResources
->PartialResourceList
.PartialDescriptors
[ParentBootResources
->PartialResourceList
.Count
- 1].Type
== CmResourceTypeDeviceSpecific
)
2906 RtlCopyMemory(BootResources
, pValueInformation
->Data
, pValueInformation
->DataLength
);
2908 (PVOID
)((ULONG_PTR
)BootResources
+ pValueInformation
->DataLength
),
2909 (PVOID
)((ULONG_PTR
)ParentBootResources
+ Header
),
2910 ParentBootResourcesLength
- Header
);
2911 BootResources
->PartialResourceList
.Count
+= ParentBootResources
->PartialResourceList
.Count
;
2915 RtlCopyMemory(BootResources
, pValueInformation
->Data
, Header
);
2917 (PVOID
)((ULONG_PTR
)BootResources
+ Header
),
2918 (PVOID
)((ULONG_PTR
)ParentBootResources
+ Header
),
2919 ParentBootResourcesLength
- Header
);
2921 (PVOID
)((ULONG_PTR
)BootResources
+ ParentBootResourcesLength
),
2922 pValueInformation
->Data
+ Header
,
2923 pValueInformation
->DataLength
- Header
);
2924 BootResources
->PartialResourceList
.Count
+= ParentBootResources
->PartialResourceList
.Count
;
2928 if (EnumerateSubKeys
)
2933 Status
= ZwEnumerateKey(hDeviceKey
, IndexSubKey
, KeyBasicInformation
, pDeviceInformation
, DeviceInfoLength
, &RequiredSize
);
2934 if (Status
== STATUS_NO_MORE_ENTRIES
)
2936 else if (Status
== STATUS_BUFFER_OVERFLOW
|| Status
== STATUS_BUFFER_TOO_SMALL
)
2938 ExFreePool(pDeviceInformation
);
2939 DeviceInfoLength
= RequiredSize
;
2940 pDeviceInformation
= ExAllocatePool(PagedPool
, DeviceInfoLength
);
2941 if (!pDeviceInformation
)
2943 DPRINT("ExAllocatePool() failed\n");
2944 Status
= STATUS_NO_MEMORY
;
2947 Status
= ZwEnumerateKey(hDeviceKey
, IndexSubKey
, KeyBasicInformation
, pDeviceInformation
, DeviceInfoLength
, &RequiredSize
);
2949 if (!NT_SUCCESS(Status
))
2951 DPRINT("ZwEnumerateKey() failed with status 0x%08lx\n", Status
);
2955 DeviceName
.Length
= DeviceName
.MaximumLength
= (USHORT
)pDeviceInformation
->NameLength
;
2956 DeviceName
.Buffer
= pDeviceInformation
->Name
;
2958 Status
= IopEnumerateDetectedDevices(
2964 BootResourcesLength
);
2965 if (!NT_SUCCESS(Status
))
2970 /* Read identifier */
2971 Status
= ZwQueryValueKey(hDeviceKey
, &IdentifierU
, KeyValuePartialInformation
, pValueInformation
, ValueInfoLength
, &RequiredSize
);
2972 if (Status
== STATUS_BUFFER_OVERFLOW
|| Status
== STATUS_BUFFER_TOO_SMALL
)
2974 ExFreePool(pValueInformation
);
2975 ValueInfoLength
= RequiredSize
;
2976 pValueInformation
= ExAllocatePool(PagedPool
, ValueInfoLength
);
2977 if (!pValueInformation
)
2979 DPRINT("ExAllocatePool() failed\n");
2980 Status
= STATUS_NO_MEMORY
;
2983 Status
= ZwQueryValueKey(hDeviceKey
, &IdentifierU
, KeyValuePartialInformation
, pValueInformation
, ValueInfoLength
, &RequiredSize
);
2985 if (!NT_SUCCESS(Status
))
2987 if (Status
!= STATUS_OBJECT_NAME_NOT_FOUND
)
2989 DPRINT("ZwQueryValueKey() failed with status 0x%08lx\n", Status
);
2992 ValueName
.Length
= ValueName
.MaximumLength
= 0;
2994 else if (pValueInformation
->Type
!= REG_SZ
)
2996 DPRINT("Wrong registry type: got 0x%lx, expected 0x%lx\n", pValueInformation
->Type
, REG_SZ
);
3001 /* Assign hardware id to this device */
3002 ValueName
.Length
= ValueName
.MaximumLength
= (USHORT
)pValueInformation
->DataLength
;
3003 ValueName
.Buffer
= (PWCHAR
)pValueInformation
->Data
;
3004 if (ValueName
.Length
>= sizeof(WCHAR
) && ValueName
.Buffer
[ValueName
.Length
/ sizeof(WCHAR
) - 1] == UNICODE_NULL
)
3005 ValueName
.Length
-= sizeof(WCHAR
);
3008 if (RelativePath
&& RtlCompareUnicodeString(RelativePath
, &IdentifierSerial
, FALSE
) == 0)
3010 pHardwareId
= &HardwareIdSerial
;
3011 DeviceIndex
= DeviceIndexSerial
++;
3013 else if (RelativePath
&& RtlCompareUnicodeString(RelativePath
, &IdentifierKeyboard
, FALSE
) == 0)
3015 pHardwareId
= &HardwareIdKeyboard
;
3016 DeviceIndex
= DeviceIndexKeyboard
++;
3018 else if (RelativePath
&& RtlCompareUnicodeString(RelativePath
, &IdentifierMouse
, FALSE
) == 0)
3020 pHardwareId
= &HardwareIdMouse
;
3021 DeviceIndex
= DeviceIndexMouse
++;
3023 else if (RelativePath
&& RtlCompareUnicodeString(RelativePath
, &IdentifierParallel
, FALSE
) == 0)
3025 pHardwareId
= &HardwareIdParallel
;
3026 DeviceIndex
= DeviceIndexParallel
++;
3028 else if (RelativePath
&& RtlCompareUnicodeString(RelativePath
, &IdentifierFloppy
, FALSE
) == 0)
3030 pHardwareId
= &HardwareIdFloppy
;
3031 DeviceIndex
= DeviceIndexFloppy
++;
3035 /* Unknown key path */
3036 DPRINT("Unknown key path '%wZ'\n", RelativePath
);
3040 /* Prepare hardware id key (hardware id value without final \0) */
3041 HardwareIdKey
= *pHardwareId
;
3042 HardwareIdKey
.Length
-= sizeof(UNICODE_NULL
);
3044 /* Add the detected device to Root key */
3045 InitializeObjectAttributes(&ObjectAttributes
, &HardwareIdKey
, OBJ_KERNEL_HANDLE
, hRootKey
, NULL
);
3046 Status
= ZwCreateKey(
3052 ExpInTextModeSetup
? REG_OPTION_VOLATILE
: 0,
3054 if (!NT_SUCCESS(Status
))
3056 DPRINT("ZwCreateKey() failed with status 0x%08lx\n", Status
);
3059 swprintf(Level2Name
, L
"%04lu", DeviceIndex
);
3060 RtlInitUnicodeString(&Level2NameU
, Level2Name
);
3061 InitializeObjectAttributes(&ObjectAttributes
, &Level2NameU
, OBJ_KERNEL_HANDLE
, hLevel1Key
, NULL
);
3062 Status
= ZwCreateKey(
3064 KEY_SET_VALUE
| KEY_CREATE_SUB_KEY
,
3068 ExpInTextModeSetup
? REG_OPTION_VOLATILE
: 0,
3070 ZwClose(hLevel1Key
);
3071 if (!NT_SUCCESS(Status
))
3073 DPRINT("ZwCreateKey() failed with status 0x%08lx\n", Status
);
3076 DPRINT("Found %wZ #%lu (%wZ)\n", &ValueName
, DeviceIndex
, &HardwareIdKey
);
3077 Status
= ZwSetValueKey(hLevel2Key
, &HardwareIDU
, 0, REG_MULTI_SZ
, pHardwareId
->Buffer
, pHardwareId
->MaximumLength
);
3078 if (!NT_SUCCESS(Status
))
3080 DPRINT("ZwSetValueKey() failed with status 0x%08lx\n", Status
);
3081 ZwDeleteKey(hLevel2Key
);
3084 /* Create 'LogConf' subkey */
3085 InitializeObjectAttributes(&ObjectAttributes
, &LogConfU
, OBJ_KERNEL_HANDLE
, hLevel2Key
, NULL
);
3086 Status
= ZwCreateKey(
3092 REG_OPTION_VOLATILE
,
3094 if (!NT_SUCCESS(Status
))
3096 DPRINT("ZwCreateKey() failed with status 0x%08lx\n", Status
);
3097 ZwDeleteKey(hLevel2Key
);
3100 if (BootResourcesLength
>= sizeof(CM_FULL_RESOURCE_DESCRIPTOR
))
3102 CmResourceList
= ExAllocatePool(PagedPool
, BootResourcesLength
+ sizeof(ULONG
));
3103 if (!CmResourceList
)
3106 ZwDeleteKey(hLevel2Key
);
3110 /* Add the list count (1st member of CM_RESOURCE_LIST) */
3112 RtlCopyMemory(CmResourceList
,
3116 /* Now add the actual list (2nd member of CM_RESOURCE_LIST) */
3117 RtlCopyMemory(CmResourceList
+ sizeof(ULONG
),
3119 BootResourcesLength
);
3121 /* Save boot resources to 'LogConf\BootConfig' */
3122 Status
= ZwSetValueKey(hLogConf
, &BootConfigU
, 0, REG_RESOURCE_LIST
, CmResourceList
, BootResourcesLength
+ sizeof(ULONG
));
3123 if (!NT_SUCCESS(Status
))
3125 DPRINT("ZwSetValueKey() failed with status 0x%08lx\n", Status
);
3127 ZwDeleteKey(hLevel2Key
);
3134 if (BootResources
&& BootResources
!= ParentBootResources
)
3136 ExFreePool(BootResources
);
3137 BootResources
= NULL
;
3141 ZwClose(hLevel2Key
);
3146 ZwClose(hDeviceKey
);
3151 Status
= STATUS_SUCCESS
;
3154 if (hDevicesKey
&& hDevicesKey
!= hBaseKey
)
3155 ZwClose(hDevicesKey
);
3157 ZwClose(hDeviceKey
);
3158 if (pDeviceInformation
)
3159 ExFreePool(pDeviceInformation
);
3160 if (pValueInformation
)
3161 ExFreePool(pValueInformation
);
3165 static BOOLEAN INIT_FUNCTION
3166 IopIsFirmwareMapperDisabled(VOID
)
3168 UNICODE_STRING KeyPathU
= RTL_CONSTANT_STRING(L
"\\Registry\\Machine\\SYSTEM\\CURRENTCONTROLSET\\Control\\Pnp");
3169 UNICODE_STRING KeyNameU
= RTL_CONSTANT_STRING(L
"DisableFirmwareMapper");
3170 OBJECT_ATTRIBUTES ObjectAttributes
;
3172 PKEY_VALUE_PARTIAL_INFORMATION KeyInformation
;
3173 ULONG DesiredLength
, Length
;
3177 InitializeObjectAttributes(&ObjectAttributes
, &KeyPathU
, OBJ_KERNEL_HANDLE
| OBJ_CASE_INSENSITIVE
, NULL
, NULL
);
3178 Status
= ZwOpenKey(&hPnpKey
, KEY_QUERY_VALUE
, &ObjectAttributes
);
3179 if (NT_SUCCESS(Status
))
3181 Status
= ZwQueryValueKey(hPnpKey
,
3183 KeyValuePartialInformation
,
3187 if ((Status
== STATUS_BUFFER_TOO_SMALL
) ||
3188 (Status
== STATUS_BUFFER_OVERFLOW
))
3190 Length
= DesiredLength
;
3191 KeyInformation
= ExAllocatePool(PagedPool
, Length
);
3194 Status
= ZwQueryValueKey(hPnpKey
,
3196 KeyValuePartialInformation
,
3200 if (NT_SUCCESS(Status
) && KeyInformation
->DataLength
== sizeof(ULONG
))
3202 KeyValue
= (ULONG
)(*KeyInformation
->Data
);
3206 DPRINT1("ZwQueryValueKey(%wZ%wZ) failed\n", &KeyPathU
, &KeyNameU
);
3209 ExFreePool(KeyInformation
);
3213 DPRINT1("Failed to allocate memory for registry query\n");
3218 DPRINT1("ZwQueryValueKey(%wZ%wZ) failed with status 0x%08lx\n", &KeyPathU
, &KeyNameU
, Status
);
3225 DPRINT1("ZwOpenKey(%wZ) failed with status 0x%08lx\n", &KeyPathU
, Status
);
3228 DPRINT("Firmware mapper is %s\n", KeyValue
!= 0 ? "disabled" : "enabled");
3230 return (KeyValue
!= 0) ? TRUE
: FALSE
;
3236 IopUpdateRootKey(VOID
)
3238 UNICODE_STRING EnumU
= RTL_CONSTANT_STRING(L
"\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\Enum");
3239 UNICODE_STRING RootPathU
= RTL_CONSTANT_STRING(L
"Root");
3240 UNICODE_STRING MultiKeyPathU
= RTL_CONSTANT_STRING(L
"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System\\MultifunctionAdapter");
3241 OBJECT_ATTRIBUTES ObjectAttributes
;
3242 HANDLE hEnum
, hRoot
;
3245 InitializeObjectAttributes(&ObjectAttributes
, &EnumU
, OBJ_KERNEL_HANDLE
| OBJ_CASE_INSENSITIVE
, NULL
, NULL
);
3246 Status
= ZwCreateKey(&hEnum
, KEY_CREATE_SUB_KEY
, &ObjectAttributes
, 0, NULL
, 0, NULL
);
3247 if (!NT_SUCCESS(Status
))
3249 DPRINT1("ZwCreateKey() failed with status 0x%08lx\n", Status
);
3253 InitializeObjectAttributes(&ObjectAttributes
, &RootPathU
, OBJ_KERNEL_HANDLE
| OBJ_CASE_INSENSITIVE
, hEnum
, NULL
);
3254 Status
= ZwCreateKey(&hRoot
, KEY_CREATE_SUB_KEY
, &ObjectAttributes
, 0, NULL
, 0, NULL
);
3256 if (!NT_SUCCESS(Status
))
3258 DPRINT1("ZwOpenKey() failed with status 0x%08lx\n", Status
);
3262 if (!IopIsFirmwareMapperDisabled())
3264 Status
= IopOpenRegistryKeyEx(&hEnum
, NULL
, &MultiKeyPathU
, KEY_ENUMERATE_SUB_KEYS
);
3265 if (!NT_SUCCESS(Status
))
3267 /* Nothing to do, don't return with an error status */
3268 DPRINT("ZwOpenKey() failed with status 0x%08lx\n", Status
);
3270 return STATUS_SUCCESS
;
3272 Status
= IopEnumerateDetectedDevices(
3283 /* Enumeration is disabled */
3284 Status
= STATUS_SUCCESS
;
3294 IopOpenRegistryKeyEx(PHANDLE KeyHandle
,
3296 PUNICODE_STRING Name
,
3297 ACCESS_MASK DesiredAccess
)
3299 OBJECT_ATTRIBUTES ObjectAttributes
;
3306 InitializeObjectAttributes(&ObjectAttributes
,
3308 OBJ_CASE_INSENSITIVE
| OBJ_KERNEL_HANDLE
,
3312 Status
= ZwOpenKey(KeyHandle
, DesiredAccess
, &ObjectAttributes
);
3319 IopCreateRegistryKeyEx(OUT PHANDLE Handle
,
3320 IN HANDLE RootHandle OPTIONAL
,
3321 IN PUNICODE_STRING KeyName
,
3322 IN ACCESS_MASK DesiredAccess
,
3323 IN ULONG CreateOptions
,
3324 OUT PULONG Disposition OPTIONAL
)
3326 OBJECT_ATTRIBUTES ObjectAttributes
;
3327 ULONG KeyDisposition
, RootHandleIndex
= 0, i
= 1, NestedCloseLevel
= 0;
3329 HANDLE HandleArray
[2];
3330 BOOLEAN Recursing
= TRUE
;
3332 UNICODE_STRING KeyString
;
3333 NTSTATUS Status
= STATUS_SUCCESS
;
3336 /* P1 is start, pp is end */
3337 p1
= KeyName
->Buffer
;
3338 pp
= (PVOID
)((ULONG_PTR
)p1
+ KeyName
->Length
);
3340 /* Create the target key */
3341 InitializeObjectAttributes(&ObjectAttributes
,
3343 OBJ_CASE_INSENSITIVE
| OBJ_KERNEL_HANDLE
,
3346 Status
= ZwCreateKey(&HandleArray
[i
],
3354 /* Now we check if this failed */
3355 if ((Status
== STATUS_OBJECT_NAME_NOT_FOUND
) && (RootHandle
))
3357 /* Target key failed, so we'll need to create its parent. Setup array */
3358 HandleArray
[0] = NULL
;
3359 HandleArray
[1] = RootHandle
;
3361 /* Keep recursing for each missing parent */
3364 /* And if we're deep enough, close the last handle */
3365 if (NestedCloseLevel
> 1) ZwClose(HandleArray
[RootHandleIndex
]);
3367 /* We're setup to ping-pong between the two handle array entries */
3368 RootHandleIndex
= i
;
3371 /* Clear the one we're attempting to open now */
3372 HandleArray
[i
] = NULL
;
3374 /* Process the parent key name */
3375 for (p
= p1
; ((p
< pp
) && (*p
!= OBJ_NAME_PATH_SEPARATOR
)); p
++);
3376 Length
= (USHORT
)(p
- p1
) * sizeof(WCHAR
);
3378 /* Is there a parent name? */
3381 /* Build the unicode string for it */
3382 KeyString
.Buffer
= p1
;
3383 KeyString
.Length
= KeyString
.MaximumLength
= Length
;
3385 /* Now try opening the parent */
3386 InitializeObjectAttributes(&ObjectAttributes
,
3388 OBJ_CASE_INSENSITIVE
| OBJ_KERNEL_HANDLE
,
3389 HandleArray
[RootHandleIndex
],
3391 Status
= ZwCreateKey(&HandleArray
[i
],
3398 if (NT_SUCCESS(Status
))
3400 /* It worked, we have one more handle */
3405 /* Parent key creation failed, abandon loop */
3412 /* We don't have a parent name, probably corrupted key name */
3413 Status
= STATUS_INVALID_PARAMETER
;
3418 /* Now see if there's more parents to create */
3420 if ((p
== pp
) || (p1
== pp
))
3422 /* We're done, hopefully successfully, so stop */
3427 /* Outer loop check for handle nesting that requires closing the top handle */
3428 if (NestedCloseLevel
> 1) ZwClose(HandleArray
[RootHandleIndex
]);
3431 /* Check if we broke out of the loop due to success */
3432 if (NT_SUCCESS(Status
))
3434 /* Return the target handle (we closed all the parent ones) and disposition */
3435 *Handle
= HandleArray
[i
];
3436 if (Disposition
) *Disposition
= KeyDisposition
;
3439 /* Return the success state */
3445 IopGetRegistryValue(IN HANDLE Handle
,
3447 OUT PKEY_VALUE_FULL_INFORMATION
*Information
)
3449 UNICODE_STRING ValueString
;
3451 PKEY_VALUE_FULL_INFORMATION FullInformation
;
3455 RtlInitUnicodeString(&ValueString
, ValueName
);
3457 Status
= ZwQueryValueKey(Handle
,
3459 KeyValueFullInformation
,
3463 if ((Status
!= STATUS_BUFFER_OVERFLOW
) &&
3464 (Status
!= STATUS_BUFFER_TOO_SMALL
))
3469 FullInformation
= ExAllocatePool(NonPagedPool
, Size
);
3470 if (!FullInformation
) return STATUS_INSUFFICIENT_RESOURCES
;
3472 Status
= ZwQueryValueKey(Handle
,
3474 KeyValueFullInformation
,
3478 if (!NT_SUCCESS(Status
))
3480 ExFreePool(FullInformation
);
3484 *Information
= FullInformation
;
3485 return STATUS_SUCCESS
;
3488 RTL_GENERIC_COMPARE_RESULTS
3490 PiCompareInstancePath(IN PRTL_AVL_TABLE Table
,
3491 IN PVOID FirstStruct
,
3492 IN PVOID SecondStruct
)
3500 // The allocation function is called by the generic table package whenever
3501 // it needs to allocate memory for the table.
3506 PiAllocateGenericTableEntry(IN PRTL_AVL_TABLE Table
,
3516 PiFreeGenericTableEntry(IN PRTL_AVL_TABLE Table
,
3525 PpInitializeDeviceReferenceTable(VOID
)
3527 /* Setup the guarded mutex and AVL table */
3528 KeInitializeGuardedMutex(&PpDeviceReferenceTableLock
);
3529 RtlInitializeGenericTableAvl(
3530 &PpDeviceReferenceTable
,
3531 (PRTL_AVL_COMPARE_ROUTINE
)PiCompareInstancePath
,
3532 (PRTL_AVL_ALLOCATE_ROUTINE
)PiAllocateGenericTableEntry
,
3533 (PRTL_AVL_FREE_ROUTINE
)PiFreeGenericTableEntry
,
3541 /* Initialize the resource when accessing device registry data */
3542 ExInitializeResourceLite(&PpRegistryDeviceResource
);
3544 /* Setup the device reference AVL table */
3545 PpInitializeDeviceReferenceTable();
3553 /* Check the initialization phase */
3554 switch (ExpInitializationPhase
)
3559 return PiInitPhase0();
3565 //return PiInitPhase1();
3569 /* Don't know any other phase! Bugcheck! */
3570 KeBugCheck(UNEXPECTED_INITIALIZATION_CALL
);
3575 LONG IopNumberDeviceNodes
;
3579 PipAllocateDeviceNode(IN PDEVICE_OBJECT PhysicalDeviceObject
)
3581 PDEVICE_NODE DeviceNode
;
3585 DeviceNode
= ExAllocatePoolWithTag(NonPagedPool
, sizeof(DEVICE_NODE
), TAG_IO_DEVNODE
);
3586 if (!DeviceNode
) return DeviceNode
;
3589 InterlockedIncrement(&IopNumberDeviceNodes
);
3592 RtlZeroMemory(DeviceNode
, sizeof(DEVICE_NODE
));
3593 DeviceNode
->InterfaceType
= InterfaceTypeUndefined
;
3594 DeviceNode
->BusNumber
= -1;
3595 DeviceNode
->ChildInterfaceType
= InterfaceTypeUndefined
;
3596 DeviceNode
->ChildBusNumber
= -1;
3597 DeviceNode
->ChildBusTypeIndex
= -1;
3598 // KeInitializeEvent(&DeviceNode->EnumerationMutex, SynchronizationEvent, TRUE);
3599 InitializeListHead(&DeviceNode
->DeviceArbiterList
);
3600 InitializeListHead(&DeviceNode
->DeviceTranslatorList
);
3601 InitializeListHead(&DeviceNode
->TargetDeviceNotify
);
3602 InitializeListHead(&DeviceNode
->DockInfo
.ListEntry
);
3603 InitializeListHead(&DeviceNode
->PendedSetInterfaceState
);
3605 /* Check if there is a PDO */
3606 if (PhysicalDeviceObject
)
3608 /* Link it and remove the init flag */
3609 DeviceNode
->PhysicalDeviceObject
= PhysicalDeviceObject
;
3610 ((PEXTENDED_DEVOBJ_EXTENSION
)PhysicalDeviceObject
->DeviceObjectExtension
)->DeviceNode
= DeviceNode
;
3611 PhysicalDeviceObject
->Flags
&= ~DO_DEVICE_INITIALIZING
;
3614 /* Return the node */
3618 /* PUBLIC FUNCTIONS **********************************************************/
3622 PnpBusTypeGuidGet(IN USHORT Index
,
3623 IN LPGUID BusTypeGuid
)
3625 NTSTATUS Status
= STATUS_SUCCESS
;
3627 /* Acquire the lock */
3628 ExAcquireFastMutex(&PnpBusTypeGuidList
->Lock
);
3631 if (Index
< PnpBusTypeGuidList
->GuidCount
)
3634 RtlCopyMemory(BusTypeGuid
, &PnpBusTypeGuidList
->Guids
[Index
], sizeof(GUID
));
3639 Status
= STATUS_OBJECT_NAME_NOT_FOUND
;
3642 /* Release lock and return status */
3643 ExReleaseFastMutex(&PnpBusTypeGuidList
->Lock
);
3649 PnpDeviceObjectToDeviceInstance(IN PDEVICE_OBJECT DeviceObject
,
3650 IN PHANDLE DeviceInstanceHandle
,
3651 IN ACCESS_MASK DesiredAccess
)
3655 PDEVICE_NODE DeviceNode
;
3656 UNICODE_STRING KeyName
= RTL_CONSTANT_STRING(L
"\\REGISTRY\\MACHINE\\SYSTEM\\CURRENTCONTROLSET\\ENUM");
3659 /* Open the enum key */
3660 Status
= IopOpenRegistryKeyEx(&KeyHandle
,
3664 if (!NT_SUCCESS(Status
)) return Status
;
3666 /* Make sure we have an instance path */
3667 DeviceNode
= IopGetDeviceNode(DeviceObject
);
3668 if ((DeviceNode
) && (DeviceNode
->InstancePath
.Length
))
3670 /* Get the instance key */
3671 Status
= IopOpenRegistryKeyEx(DeviceInstanceHandle
,
3673 &DeviceNode
->InstancePath
,
3679 Status
= STATUS_INVALID_DEVICE_REQUEST
;
3682 /* Close the handle and return status */
3689 PnpDetermineResourceListSize(IN PCM_RESOURCE_LIST ResourceList
)
3691 ULONG FinalSize
, PartialSize
, EntrySize
, i
, j
;
3692 PCM_FULL_RESOURCE_DESCRIPTOR FullDescriptor
;
3693 PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor
;
3695 /* If we don't have one, that's easy */
3696 if (!ResourceList
) return 0;
3698 /* Start with the minimum size possible */
3699 FinalSize
= FIELD_OFFSET(CM_RESOURCE_LIST
, List
);
3701 /* Loop each full descriptor */
3702 FullDescriptor
= ResourceList
->List
;
3703 for (i
= 0; i
< ResourceList
->Count
; i
++)
3705 /* Start with the minimum size possible */
3706 PartialSize
= FIELD_OFFSET(CM_FULL_RESOURCE_DESCRIPTOR
, PartialResourceList
) +
3707 FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST
, PartialDescriptors
);
3709 /* Loop each partial descriptor */
3710 PartialDescriptor
= FullDescriptor
->PartialResourceList
.PartialDescriptors
;
3711 for (j
= 0; j
< FullDescriptor
->PartialResourceList
.Count
; j
++)
3713 /* Start with the minimum size possible */
3714 EntrySize
= sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR
);
3716 /* Check if there is extra data */
3717 if (PartialDescriptor
->Type
== CmResourceTypeDeviceSpecific
)
3720 EntrySize
+= PartialDescriptor
->u
.DeviceSpecificData
.DataSize
;
3723 /* The size of partial descriptors is bigger */
3724 PartialSize
+= EntrySize
;
3726 /* Go to the next partial descriptor */
3727 PartialDescriptor
= (PVOID
)((ULONG_PTR
)PartialDescriptor
+ EntrySize
);
3730 /* The size of full descriptors is bigger */
3731 FinalSize
+= PartialSize
;
3733 /* Go to the next full descriptor */
3734 FullDescriptor
= (PVOID
)((ULONG_PTR
)FullDescriptor
+ PartialSize
);
3737 /* Return the final size */
3743 PiGetDeviceRegistryProperty(IN PDEVICE_OBJECT DeviceObject
,
3748 IN PULONG BufferLength
)
3751 HANDLE KeyHandle
, SubHandle
;
3752 UNICODE_STRING KeyString
;
3753 PKEY_VALUE_FULL_INFORMATION KeyValueInfo
= NULL
;
3757 /* Find the instance key */
3758 Status
= PnpDeviceObjectToDeviceInstance(DeviceObject
, &KeyHandle
, KEY_READ
);
3759 if (NT_SUCCESS(Status
))
3761 /* Check for name given by caller */
3765 RtlInitUnicodeString(&KeyString
, KeyName
);
3766 Status
= IopOpenRegistryKeyEx(&SubHandle
,
3770 if (NT_SUCCESS(Status
))
3772 /* And use this handle instead */
3774 KeyHandle
= SubHandle
;
3778 /* Check if sub-key handle succeeded (or no-op if no key name given) */
3779 if (NT_SUCCESS(Status
))
3781 /* Now get the size of the property */
3782 Status
= IopGetRegistryValue(KeyHandle
,
3791 /* Fail if any of the registry operations failed */
3792 if (!NT_SUCCESS(Status
)) return Status
;
3794 /* Check how much data we have to copy */
3795 Length
= KeyValueInfo
->DataLength
;
3796 if (*BufferLength
>= Length
)
3798 /* Check for a match in the value type */
3799 if (KeyValueInfo
->Type
== ValueType
)
3802 RtlCopyMemory(Buffer
,
3803 (PVOID
)((ULONG_PTR
)KeyValueInfo
+
3804 KeyValueInfo
->DataOffset
),
3809 /* Invalid registry property type, fail */
3810 Status
= STATUS_INVALID_PARAMETER_2
;
3815 /* Buffer is too small to hold data */
3816 Status
= STATUS_BUFFER_TOO_SMALL
;
3819 /* Return the required buffer length, free the buffer, and return status */
3820 *BufferLength
= Length
;
3821 ExFreePool(KeyValueInfo
);
3825 #define PIP_RETURN_DATA(x, y) {ReturnLength = x; Data = y; Status = STATUS_SUCCESS; break;}
3826 #define PIP_REGISTRY_DATA(x, y) {ValueName = x; ValueType = y; break;}
3827 #define PIP_UNIMPLEMENTED() {UNIMPLEMENTED_DBGBREAK(); break;}
3834 IoGetDeviceProperty(IN PDEVICE_OBJECT DeviceObject
,
3835 IN DEVICE_REGISTRY_PROPERTY DeviceProperty
,
3836 IN ULONG BufferLength
,
3837 OUT PVOID PropertyBuffer
,
3838 OUT PULONG ResultLength
)
3840 PDEVICE_NODE DeviceNode
= IopGetDeviceNode(DeviceObject
);
3841 DEVICE_CAPABILITIES DeviceCaps
;
3842 ULONG ReturnLength
= 0, Length
= 0, ValueType
;
3843 PWCHAR ValueName
= NULL
, EnumeratorNameEnd
, DeviceInstanceName
;
3845 NTSTATUS Status
= STATUS_BUFFER_TOO_SMALL
;
3847 POBJECT_NAME_INFORMATION ObjectNameInfo
= NULL
;
3848 BOOLEAN NullTerminate
= FALSE
;
3850 DPRINT("IoGetDeviceProperty(0x%p %d)\n", DeviceObject
, DeviceProperty
);
3852 /* Assume failure */
3855 /* Only PDOs can call this */
3856 if (!DeviceNode
) return STATUS_INVALID_DEVICE_REQUEST
;
3858 /* Handle all properties */
3859 switch (DeviceProperty
)
3861 case DevicePropertyBusTypeGuid
:
3863 /* Get the GUID from the internal cache */
3864 Status
= PnpBusTypeGuidGet(DeviceNode
->ChildBusTypeIndex
, &BusTypeGuid
);
3865 if (!NT_SUCCESS(Status
)) return Status
;
3867 /* This is the format of the returned data */
3868 PIP_RETURN_DATA(sizeof(GUID
), &BusTypeGuid
);
3870 case DevicePropertyLegacyBusType
:
3872 /* Validate correct interface type */
3873 if (DeviceNode
->ChildInterfaceType
== InterfaceTypeUndefined
)
3874 return STATUS_OBJECT_NAME_NOT_FOUND
;
3876 /* This is the format of the returned data */
3877 PIP_RETURN_DATA(sizeof(INTERFACE_TYPE
), &DeviceNode
->ChildInterfaceType
);
3879 case DevicePropertyBusNumber
:
3881 /* Validate correct bus number */
3882 if ((DeviceNode
->ChildBusNumber
& 0x80000000) == 0x80000000)
3883 return STATUS_OBJECT_NAME_NOT_FOUND
;
3885 /* This is the format of the returned data */
3886 PIP_RETURN_DATA(sizeof(ULONG
), &DeviceNode
->ChildBusNumber
);
3888 case DevicePropertyEnumeratorName
:
3890 /* Get the instance path */
3891 DeviceInstanceName
= DeviceNode
->InstancePath
.Buffer
;
3894 ASSERT((BufferLength
& 1) == 0);
3895 ASSERT(DeviceInstanceName
!= NULL
);
3897 /* Get the name from the path */
3898 EnumeratorNameEnd
= wcschr(DeviceInstanceName
, OBJ_NAME_PATH_SEPARATOR
);
3899 ASSERT(EnumeratorNameEnd
);
3901 /* This string needs to be NULL-terminated */
3902 NullTerminate
= TRUE
;
3904 /* This is the format of the returned data */
3905 PIP_RETURN_DATA((ULONG
)(EnumeratorNameEnd
- DeviceInstanceName
) * sizeof(WCHAR
),
3906 DeviceInstanceName
);
3908 case DevicePropertyAddress
:
3910 /* Query the device caps */
3911 Status
= IopQueryDeviceCapabilities(DeviceNode
, &DeviceCaps
);
3912 if (!NT_SUCCESS(Status
) || (DeviceCaps
.Address
== MAXULONG
))
3913 return STATUS_OBJECT_NAME_NOT_FOUND
;
3915 /* This is the format of the returned data */
3916 PIP_RETURN_DATA(sizeof(ULONG
), &DeviceCaps
.Address
);
3918 case DevicePropertyBootConfigurationTranslated
:
3920 /* Validate we have resources */
3921 if (!DeviceNode
->BootResources
)
3922 // if (!DeviceNode->BootResourcesTranslated) // FIXFIX: Need this field
3924 /* No resources will still fake success, but with 0 bytes */
3926 return STATUS_SUCCESS
;
3929 /* This is the format of the returned data */
3930 PIP_RETURN_DATA(PnpDetermineResourceListSize(DeviceNode
->BootResources
), // FIXFIX: Should use BootResourcesTranslated
3931 DeviceNode
->BootResources
); // FIXFIX: Should use BootResourcesTranslated
3933 case DevicePropertyPhysicalDeviceObjectName
:
3935 /* Sanity check for Unicode-sized string */
3936 ASSERT((BufferLength
& 1) == 0);
3938 /* Allocate name buffer */
3939 Length
= BufferLength
+ sizeof(OBJECT_NAME_INFORMATION
);
3940 ObjectNameInfo
= ExAllocatePool(PagedPool
, Length
);
3941 if (!ObjectNameInfo
) return STATUS_INSUFFICIENT_RESOURCES
;
3943 /* Query the PDO name */
3944 Status
= ObQueryNameString(DeviceObject
,
3948 if (Status
== STATUS_INFO_LENGTH_MISMATCH
)
3950 /* It's up to the caller to try again */
3951 Status
= STATUS_BUFFER_TOO_SMALL
;
3954 /* This string needs to be NULL-terminated */
3955 NullTerminate
= TRUE
;
3957 /* Return if successful */
3958 if (NT_SUCCESS(Status
)) PIP_RETURN_DATA(ObjectNameInfo
->Name
.Length
,
3959 ObjectNameInfo
->Name
.Buffer
);
3961 /* Let the caller know how big the name is */
3962 *ResultLength
-= sizeof(OBJECT_NAME_INFORMATION
);
3965 /* Handle the registry-based properties */
3966 case DevicePropertyUINumber
:
3967 PIP_REGISTRY_DATA(REGSTR_VAL_UI_NUMBER
, REG_DWORD
);
3968 case DevicePropertyLocationInformation
:
3969 PIP_REGISTRY_DATA(REGSTR_VAL_LOCATION_INFORMATION
, REG_SZ
);
3970 case DevicePropertyDeviceDescription
:
3971 PIP_REGISTRY_DATA(REGSTR_VAL_DEVDESC
, REG_SZ
);
3972 case DevicePropertyHardwareID
:
3973 PIP_REGISTRY_DATA(REGSTR_VAL_HARDWAREID
, REG_MULTI_SZ
);
3974 case DevicePropertyCompatibleIDs
:
3975 PIP_REGISTRY_DATA(REGSTR_VAL_COMPATIBLEIDS
, REG_MULTI_SZ
);
3976 case DevicePropertyBootConfiguration
:
3977 PIP_REGISTRY_DATA(REGSTR_VAL_BOOTCONFIG
, REG_RESOURCE_LIST
);
3978 case DevicePropertyClassName
:
3979 PIP_REGISTRY_DATA(REGSTR_VAL_CLASS
, REG_SZ
);
3980 case DevicePropertyClassGuid
:
3981 PIP_REGISTRY_DATA(REGSTR_VAL_CLASSGUID
, REG_SZ
);
3982 case DevicePropertyDriverKeyName
:
3983 PIP_REGISTRY_DATA(REGSTR_VAL_DRIVER
, REG_SZ
);
3984 case DevicePropertyManufacturer
:
3985 PIP_REGISTRY_DATA(REGSTR_VAL_MFG
, REG_SZ
);
3986 case DevicePropertyFriendlyName
:
3987 PIP_REGISTRY_DATA(REGSTR_VAL_FRIENDLYNAME
, REG_SZ
);
3988 case DevicePropertyContainerID
:
3989 //PIP_REGISTRY_DATA(REGSTR_VAL_CONTAINERID, REG_SZ); // Win7
3990 PIP_UNIMPLEMENTED();
3991 case DevicePropertyRemovalPolicy
:
3992 PIP_UNIMPLEMENTED();
3994 case DevicePropertyInstallState
:
3995 PIP_REGISTRY_DATA(REGSTR_VAL_CONFIGFLAGS
, REG_DWORD
);
3997 case DevicePropertyResourceRequirements
:
3998 PIP_UNIMPLEMENTED();
3999 case DevicePropertyAllocatedResources
:
4000 PIP_UNIMPLEMENTED();
4002 return STATUS_INVALID_PARAMETER_2
;
4005 /* Having a registry value name implies registry data */
4008 /* We know up-front how much data to expect */
4009 *ResultLength
= BufferLength
;
4011 /* Go get the data, use the LogConf subkey if necessary */
4012 Status
= PiGetDeviceRegistryProperty(DeviceObject
,
4016 DevicePropertyBootConfiguration
) ?
4021 else if (NT_SUCCESS(Status
))
4023 /* We know up-front how much data to expect, check the caller's buffer */
4024 *ResultLength
= ReturnLength
+ (NullTerminate
? sizeof(UNICODE_NULL
) : 0);
4025 if (*ResultLength
<= BufferLength
)
4027 /* Buffer is all good, copy the data */
4028 RtlCopyMemory(PropertyBuffer
, Data
, ReturnLength
);
4030 /* Check if we need to NULL-terminate the string */
4033 /* Terminate the string */
4034 ((PWCHAR
)PropertyBuffer
)[ReturnLength
/ sizeof(WCHAR
)] = UNICODE_NULL
;
4037 /* This is the success path */
4038 Status
= STATUS_SUCCESS
;
4043 Status
= STATUS_BUFFER_TOO_SMALL
;
4047 /* Free any allocation we may have made, and return the status code */
4048 if (ObjectNameInfo
) ExFreePool(ObjectNameInfo
);
4057 IoInvalidateDeviceState(IN PDEVICE_OBJECT PhysicalDeviceObject
)
4059 PDEVICE_NODE DeviceNode
= IopGetDeviceNode(PhysicalDeviceObject
);
4060 IO_STACK_LOCATION Stack
;
4063 IO_STATUS_BLOCK IoStatusBlock
;
4065 RtlZeroMemory(&Stack
, sizeof(IO_STACK_LOCATION
));
4066 Stack
.MajorFunction
= IRP_MJ_PNP
;
4067 Stack
.MinorFunction
= IRP_MN_QUERY_PNP_DEVICE_STATE
;
4069 Status
= IopSynchronousCall(PhysicalDeviceObject
, &Stack
, (PVOID
*)&PnPFlags
);
4070 if (!NT_SUCCESS(Status
))
4072 DPRINT1("IRP_MN_QUERY_PNP_DEVICE_STATE failed with status 0x%x\n", Status
);
4076 if (PnPFlags
& PNP_DEVICE_NOT_DISABLEABLE
)
4077 DeviceNode
->UserFlags
|= DNUF_NOT_DISABLEABLE
;
4079 DeviceNode
->UserFlags
&= ~DNUF_NOT_DISABLEABLE
;
4081 if (PnPFlags
& PNP_DEVICE_DONT_DISPLAY_IN_UI
)
4082 DeviceNode
->UserFlags
|= DNUF_DONT_SHOW_IN_UI
;
4084 DeviceNode
->UserFlags
&= ~DNUF_DONT_SHOW_IN_UI
;
4086 if ((PnPFlags
& PNP_DEVICE_REMOVED
) ||
4087 ((PnPFlags
& PNP_DEVICE_FAILED
) && !(PnPFlags
& PNP_DEVICE_RESOURCE_REQUIREMENTS_CHANGED
)))
4089 /* Flag it if it's failed */
4090 if (PnPFlags
& PNP_DEVICE_FAILED
) DeviceNode
->Problem
= CM_PROB_FAILED_POST_START
;
4092 /* Send removal IRPs to all of its children */
4093 IopPrepareDeviceForRemoval(PhysicalDeviceObject
, TRUE
);
4095 /* Send surprise removal */
4096 IopSendSurpriseRemoval(PhysicalDeviceObject
);
4098 /* Tell the user-mode PnP manager that a device was removed */
4099 IopQueueTargetDeviceEvent(&GUID_DEVICE_SURPRISE_REMOVAL
,
4100 &DeviceNode
->InstancePath
);
4102 IopSendRemoveDevice(PhysicalDeviceObject
);
4104 else if ((PnPFlags
& PNP_DEVICE_FAILED
) && (PnPFlags
& PNP_DEVICE_RESOURCE_REQUIREMENTS_CHANGED
))
4106 /* Stop for resource rebalance */
4107 Status
= IopStopDevice(DeviceNode
);
4108 if (!NT_SUCCESS(Status
))
4110 DPRINT1("Failed to stop device for rebalancing\n");
4112 /* Stop failed so don't rebalance */
4113 PnPFlags
&= ~PNP_DEVICE_RESOURCE_REQUIREMENTS_CHANGED
;
4117 /* Resource rebalance */
4118 if (PnPFlags
& PNP_DEVICE_RESOURCE_REQUIREMENTS_CHANGED
)
4120 DPRINT("Sending IRP_MN_QUERY_RESOURCES to device stack\n");
4122 Status
= IopInitiatePnpIrp(PhysicalDeviceObject
,
4124 IRP_MN_QUERY_RESOURCES
,
4126 if (NT_SUCCESS(Status
) && IoStatusBlock
.Information
)
4128 DeviceNode
->BootResources
=
4129 (PCM_RESOURCE_LIST
)IoStatusBlock
.Information
;
4130 IopDeviceNodeSetFlag(DeviceNode
, DNF_HAS_BOOT_CONFIG
);
4134 DPRINT("IopInitiatePnpIrp() failed (Status %x) or IoStatusBlock.Information=NULL\n", Status
);
4135 DeviceNode
->BootResources
= NULL
;
4138 DPRINT("Sending IRP_MN_QUERY_RESOURCE_REQUIREMENTS to device stack\n");
4140 Status
= IopInitiatePnpIrp(PhysicalDeviceObject
,
4142 IRP_MN_QUERY_RESOURCE_REQUIREMENTS
,
4144 if (NT_SUCCESS(Status
))
4146 DeviceNode
->ResourceRequirements
=
4147 (PIO_RESOURCE_REQUIREMENTS_LIST
)IoStatusBlock
.Information
;
4151 DPRINT("IopInitiatePnpIrp() failed (Status %08lx)\n", Status
);
4152 DeviceNode
->ResourceRequirements
= NULL
;
4155 /* IRP_MN_FILTER_RESOURCE_REQUIREMENTS is called indirectly by IopStartDevice */
4156 if (IopStartDevice(DeviceNode
) != STATUS_SUCCESS
)
4158 DPRINT1("Restart after resource rebalance failed\n");
4160 DeviceNode
->Flags
&= ~(DNF_STARTED
| DNF_START_REQUEST_PENDING
);
4161 DeviceNode
->Flags
|= DNF_START_FAILED
;
4163 IopRemoveDevice(DeviceNode
);
4169 * @name IoOpenDeviceRegistryKey
4171 * Open a registry key unique for a specified driver or device instance.
4173 * @param DeviceObject Device to get the registry key for.
4174 * @param DevInstKeyType Type of the key to return.
4175 * @param DesiredAccess Access mask (eg. KEY_READ | KEY_WRITE).
4176 * @param DevInstRegKey Handle to the opened registry key on
4177 * successful return.
4185 IoOpenDeviceRegistryKey(IN PDEVICE_OBJECT DeviceObject
,
4186 IN ULONG DevInstKeyType
,
4187 IN ACCESS_MASK DesiredAccess
,
4188 OUT PHANDLE DevInstRegKey
)
4190 static WCHAR RootKeyName
[] =
4191 L
"\\Registry\\Machine\\System\\CurrentControlSet\\";
4192 static WCHAR ProfileKeyName
[] =
4193 L
"Hardware Profiles\\Current\\System\\CurrentControlSet\\";
4194 static WCHAR ClassKeyName
[] = L
"Control\\Class\\";
4195 static WCHAR EnumKeyName
[] = L
"Enum\\";
4196 static WCHAR DeviceParametersKeyName
[] = L
"Device Parameters";
4197 ULONG KeyNameLength
;
4198 LPWSTR KeyNameBuffer
;
4199 UNICODE_STRING KeyName
;
4200 ULONG DriverKeyLength
;
4201 OBJECT_ATTRIBUTES ObjectAttributes
;
4202 PDEVICE_NODE DeviceNode
= NULL
;
4205 DPRINT("IoOpenDeviceRegistryKey() called\n");
4207 if ((DevInstKeyType
& (PLUGPLAY_REGKEY_DEVICE
| PLUGPLAY_REGKEY_DRIVER
)) == 0)
4209 DPRINT1("IoOpenDeviceRegistryKey(): got wrong params, exiting... \n");
4210 return STATUS_INVALID_PARAMETER
;
4213 if (!IopIsValidPhysicalDeviceObject(DeviceObject
))
4214 return STATUS_INVALID_DEVICE_REQUEST
;
4215 DeviceNode
= IopGetDeviceNode(DeviceObject
);
4218 * Calculate the length of the base key name. This is the full
4219 * name for driver key or the name excluding "Device Parameters"
4220 * subkey for device key.
4223 KeyNameLength
= sizeof(RootKeyName
);
4224 if (DevInstKeyType
& PLUGPLAY_REGKEY_CURRENT_HWPROFILE
)
4225 KeyNameLength
+= sizeof(ProfileKeyName
) - sizeof(UNICODE_NULL
);
4226 if (DevInstKeyType
& PLUGPLAY_REGKEY_DRIVER
)
4228 KeyNameLength
+= sizeof(ClassKeyName
) - sizeof(UNICODE_NULL
);
4229 Status
= IoGetDeviceProperty(DeviceObject
, DevicePropertyDriverKeyName
,
4230 0, NULL
, &DriverKeyLength
);
4231 if (Status
!= STATUS_BUFFER_TOO_SMALL
)
4233 KeyNameLength
+= DriverKeyLength
;
4237 KeyNameLength
+= sizeof(EnumKeyName
) - sizeof(UNICODE_NULL
) +
4238 DeviceNode
->InstancePath
.Length
;
4242 * Now allocate the buffer for the key name...
4245 KeyNameBuffer
= ExAllocatePool(PagedPool
, KeyNameLength
);
4246 if (KeyNameBuffer
== NULL
)
4247 return STATUS_INSUFFICIENT_RESOURCES
;
4250 KeyName
.MaximumLength
= (USHORT
)KeyNameLength
;
4251 KeyName
.Buffer
= KeyNameBuffer
;
4254 * ...and build the key name.
4257 KeyName
.Length
+= sizeof(RootKeyName
) - sizeof(UNICODE_NULL
);
4258 RtlCopyMemory(KeyNameBuffer
, RootKeyName
, KeyName
.Length
);
4260 if (DevInstKeyType
& PLUGPLAY_REGKEY_CURRENT_HWPROFILE
)
4261 RtlAppendUnicodeToString(&KeyName
, ProfileKeyName
);
4263 if (DevInstKeyType
& PLUGPLAY_REGKEY_DRIVER
)
4265 RtlAppendUnicodeToString(&KeyName
, ClassKeyName
);
4266 Status
= IoGetDeviceProperty(DeviceObject
, DevicePropertyDriverKeyName
,
4267 DriverKeyLength
, KeyNameBuffer
+
4268 (KeyName
.Length
/ sizeof(WCHAR
)),
4270 if (!NT_SUCCESS(Status
))
4272 DPRINT1("Call to IoGetDeviceProperty() failed with Status 0x%08lx\n", Status
);
4273 ExFreePool(KeyNameBuffer
);
4276 KeyName
.Length
+= (USHORT
)DriverKeyLength
- sizeof(UNICODE_NULL
);
4280 RtlAppendUnicodeToString(&KeyName
, EnumKeyName
);
4281 Status
= RtlAppendUnicodeStringToString(&KeyName
, &DeviceNode
->InstancePath
);
4282 if (DeviceNode
->InstancePath
.Length
== 0)
4284 ExFreePool(KeyNameBuffer
);
4290 * Open the base key.
4292 Status
= IopOpenRegistryKeyEx(DevInstRegKey
, NULL
, &KeyName
, DesiredAccess
);
4293 if (!NT_SUCCESS(Status
))
4295 DPRINT1("IoOpenDeviceRegistryKey(%wZ): Base key doesn't exist, exiting... (Status 0x%08lx)\n", &KeyName
, Status
);
4296 ExFreePool(KeyNameBuffer
);
4299 ExFreePool(KeyNameBuffer
);
4302 * For driver key we're done now.
4305 if (DevInstKeyType
& PLUGPLAY_REGKEY_DRIVER
)
4309 * Let's go further. For device key we must open "Device Parameters"
4310 * subkey and create it if it doesn't exist yet.
4313 RtlInitUnicodeString(&KeyName
, DeviceParametersKeyName
);
4314 InitializeObjectAttributes(&ObjectAttributes
,
4316 OBJ_CASE_INSENSITIVE
| OBJ_KERNEL_HANDLE
,
4319 Status
= ZwCreateKey(DevInstRegKey
, DesiredAccess
, &ObjectAttributes
,
4320 0, NULL
, ExpInTextModeSetup
? REG_OPTION_VOLATILE
: 0, NULL
);
4321 ZwClose(ObjectAttributes
.RootDirectory
);
4328 IopQueryRemoveChildDevices(PDEVICE_NODE ParentDeviceNode
, BOOLEAN Force
)
4330 PDEVICE_NODE ChildDeviceNode
, NextDeviceNode
, FailedRemoveDevice
;
4334 KeAcquireSpinLock(&IopDeviceTreeLock
, &OldIrql
);
4335 ChildDeviceNode
= ParentDeviceNode
->Child
;
4336 while (ChildDeviceNode
!= NULL
)
4338 NextDeviceNode
= ChildDeviceNode
->Sibling
;
4339 KeReleaseSpinLock(&IopDeviceTreeLock
, OldIrql
);
4341 Status
= IopPrepareDeviceForRemoval(ChildDeviceNode
->PhysicalDeviceObject
, Force
);
4342 if (!NT_SUCCESS(Status
))
4344 FailedRemoveDevice
= ChildDeviceNode
;
4348 KeAcquireSpinLock(&IopDeviceTreeLock
, &OldIrql
);
4349 ChildDeviceNode
= NextDeviceNode
;
4351 KeReleaseSpinLock(&IopDeviceTreeLock
, OldIrql
);
4353 return STATUS_SUCCESS
;
4356 KeAcquireSpinLock(&IopDeviceTreeLock
, &OldIrql
);
4357 ChildDeviceNode
= ParentDeviceNode
->Child
;
4358 while (ChildDeviceNode
!= NULL
)
4360 NextDeviceNode
= ChildDeviceNode
->Sibling
;
4361 KeReleaseSpinLock(&IopDeviceTreeLock
, OldIrql
);
4363 IopCancelPrepareDeviceForRemoval(ChildDeviceNode
->PhysicalDeviceObject
);
4365 /* IRP_MN_CANCEL_REMOVE_DEVICE is also sent to the device
4366 * that failed the IRP_MN_QUERY_REMOVE_DEVICE request */
4367 if (ChildDeviceNode
== FailedRemoveDevice
)
4370 ChildDeviceNode
= NextDeviceNode
;
4372 KeAcquireSpinLock(&IopDeviceTreeLock
, &OldIrql
);
4374 KeReleaseSpinLock(&IopDeviceTreeLock
, OldIrql
);
4381 IopSendRemoveChildDevices(PDEVICE_NODE ParentDeviceNode
)
4383 PDEVICE_NODE ChildDeviceNode
, NextDeviceNode
;
4386 KeAcquireSpinLock(&IopDeviceTreeLock
, &OldIrql
);
4387 ChildDeviceNode
= ParentDeviceNode
->Child
;
4388 while (ChildDeviceNode
!= NULL
)
4390 NextDeviceNode
= ChildDeviceNode
->Sibling
;
4391 KeReleaseSpinLock(&IopDeviceTreeLock
, OldIrql
);
4393 IopSendRemoveDevice(ChildDeviceNode
->PhysicalDeviceObject
);
4395 ChildDeviceNode
= NextDeviceNode
;
4397 KeAcquireSpinLock(&IopDeviceTreeLock
, &OldIrql
);
4399 KeReleaseSpinLock(&IopDeviceTreeLock
, OldIrql
);
4404 IopCancelRemoveChildDevices(PDEVICE_NODE ParentDeviceNode
)
4406 PDEVICE_NODE ChildDeviceNode
, NextDeviceNode
;
4409 KeAcquireSpinLock(&IopDeviceTreeLock
, &OldIrql
);
4410 ChildDeviceNode
= ParentDeviceNode
->Child
;
4411 while (ChildDeviceNode
!= NULL
)
4413 NextDeviceNode
= ChildDeviceNode
->Sibling
;
4414 KeReleaseSpinLock(&IopDeviceTreeLock
, OldIrql
);
4416 IopCancelPrepareDeviceForRemoval(ChildDeviceNode
->PhysicalDeviceObject
);
4418 ChildDeviceNode
= NextDeviceNode
;
4420 KeAcquireSpinLock(&IopDeviceTreeLock
, &OldIrql
);
4422 KeReleaseSpinLock(&IopDeviceTreeLock
, OldIrql
);
4427 IopQueryRemoveDeviceRelations(PDEVICE_RELATIONS DeviceRelations
, BOOLEAN Force
)
4429 /* This function DOES NOT dereference the device objects on SUCCESS
4430 * but it DOES dereference device objects on FAILURE */
4435 for (i
= 0; i
< DeviceRelations
->Count
; i
++)
4437 Status
= IopPrepareDeviceForRemoval(DeviceRelations
->Objects
[i
], Force
);
4438 if (!NT_SUCCESS(Status
))
4445 return STATUS_SUCCESS
;
4448 /* IRP_MN_CANCEL_REMOVE_DEVICE is also sent to the device
4449 * that failed the IRP_MN_QUERY_REMOVE_DEVICE request */
4450 for (i
= 0; i
<= j
; i
++)
4452 IopCancelPrepareDeviceForRemoval(DeviceRelations
->Objects
[i
]);
4453 ObDereferenceObject(DeviceRelations
->Objects
[i
]);
4454 DeviceRelations
->Objects
[i
] = NULL
;
4456 for (; i
< DeviceRelations
->Count
; i
++)
4458 ObDereferenceObject(DeviceRelations
->Objects
[i
]);
4459 DeviceRelations
->Objects
[i
] = NULL
;
4461 ExFreePool(DeviceRelations
);
4468 IopSendRemoveDeviceRelations(PDEVICE_RELATIONS DeviceRelations
)
4470 /* This function DOES dereference the device objects in all cases */
4474 for (i
= 0; i
< DeviceRelations
->Count
; i
++)
4476 IopSendRemoveDevice(DeviceRelations
->Objects
[i
]);
4477 DeviceRelations
->Objects
[i
] = NULL
;
4480 ExFreePool(DeviceRelations
);
4485 IopCancelRemoveDeviceRelations(PDEVICE_RELATIONS DeviceRelations
)
4487 /* This function DOES dereference the device objects in all cases */
4491 for (i
= 0; i
< DeviceRelations
->Count
; i
++)
4493 IopCancelPrepareDeviceForRemoval(DeviceRelations
->Objects
[i
]);
4494 ObDereferenceObject(DeviceRelations
->Objects
[i
]);
4495 DeviceRelations
->Objects
[i
] = NULL
;
4498 ExFreePool(DeviceRelations
);
4502 IopCancelPrepareDeviceForRemoval(PDEVICE_OBJECT DeviceObject
)
4504 IO_STACK_LOCATION Stack
;
4505 IO_STATUS_BLOCK IoStatusBlock
;
4506 PDEVICE_RELATIONS DeviceRelations
;
4509 IopCancelRemoveDevice(DeviceObject
);
4511 Stack
.Parameters
.QueryDeviceRelations
.Type
= RemovalRelations
;
4513 Status
= IopInitiatePnpIrp(DeviceObject
,
4515 IRP_MN_QUERY_DEVICE_RELATIONS
,
4517 if (!NT_SUCCESS(Status
))
4519 DPRINT("IopInitiatePnpIrp() failed with status 0x%08lx\n", Status
);
4520 DeviceRelations
= NULL
;
4524 DeviceRelations
= (PDEVICE_RELATIONS
)IoStatusBlock
.Information
;
4527 if (DeviceRelations
)
4528 IopCancelRemoveDeviceRelations(DeviceRelations
);
4532 IopPrepareDeviceForRemoval(IN PDEVICE_OBJECT DeviceObject
, BOOLEAN Force
)
4534 PDEVICE_NODE DeviceNode
= IopGetDeviceNode(DeviceObject
);
4535 IO_STACK_LOCATION Stack
;
4536 IO_STATUS_BLOCK IoStatusBlock
;
4537 PDEVICE_RELATIONS DeviceRelations
;
4540 if ((DeviceNode
->UserFlags
& DNUF_NOT_DISABLEABLE
) && !Force
)
4542 DPRINT1("Removal not allowed for %wZ\n", &DeviceNode
->InstancePath
);
4543 return STATUS_UNSUCCESSFUL
;
4546 if (!Force
&& IopQueryRemoveDevice(DeviceObject
) != STATUS_SUCCESS
)
4548 DPRINT1("Removal vetoed by failing the query remove request\n");
4550 IopCancelRemoveDevice(DeviceObject
);
4552 return STATUS_UNSUCCESSFUL
;
4555 Stack
.Parameters
.QueryDeviceRelations
.Type
= RemovalRelations
;
4557 Status
= IopInitiatePnpIrp(DeviceObject
,
4559 IRP_MN_QUERY_DEVICE_RELATIONS
,
4561 if (!NT_SUCCESS(Status
))
4563 DPRINT("IopInitiatePnpIrp() failed with status 0x%08lx\n", Status
);
4564 DeviceRelations
= NULL
;
4568 DeviceRelations
= (PDEVICE_RELATIONS
)IoStatusBlock
.Information
;
4571 if (DeviceRelations
)
4573 Status
= IopQueryRemoveDeviceRelations(DeviceRelations
, Force
);
4574 if (!NT_SUCCESS(Status
))
4578 Status
= IopQueryRemoveChildDevices(DeviceNode
, Force
);
4579 if (!NT_SUCCESS(Status
))
4581 if (DeviceRelations
)
4582 IopCancelRemoveDeviceRelations(DeviceRelations
);
4586 if (DeviceRelations
)
4587 IopSendRemoveDeviceRelations(DeviceRelations
);
4588 IopSendRemoveChildDevices(DeviceNode
);
4590 return STATUS_SUCCESS
;
4594 IopRemoveDevice(PDEVICE_NODE DeviceNode
)
4598 DPRINT("Removing device: %wZ\n", &DeviceNode
->InstancePath
);
4600 Status
= IopPrepareDeviceForRemoval(DeviceNode
->PhysicalDeviceObject
, FALSE
);
4601 if (NT_SUCCESS(Status
))
4603 IopSendRemoveDevice(DeviceNode
->PhysicalDeviceObject
);
4604 IopQueueTargetDeviceEvent(&GUID_DEVICE_SAFE_REMOVAL
,
4605 &DeviceNode
->InstancePath
);
4606 return STATUS_SUCCESS
;
4617 IoRequestDeviceEject(IN PDEVICE_OBJECT PhysicalDeviceObject
)
4619 PDEVICE_NODE DeviceNode
= IopGetDeviceNode(PhysicalDeviceObject
);
4620 PDEVICE_RELATIONS DeviceRelations
;
4621 IO_STATUS_BLOCK IoStatusBlock
;
4622 IO_STACK_LOCATION Stack
;
4623 DEVICE_CAPABILITIES Capabilities
;
4626 IopQueueTargetDeviceEvent(&GUID_DEVICE_KERNEL_INITIATED_EJECT
,
4627 &DeviceNode
->InstancePath
);
4629 if (IopQueryDeviceCapabilities(DeviceNode
, &Capabilities
) != STATUS_SUCCESS
)
4634 Stack
.Parameters
.QueryDeviceRelations
.Type
= EjectionRelations
;
4636 Status
= IopInitiatePnpIrp(PhysicalDeviceObject
,
4638 IRP_MN_QUERY_DEVICE_RELATIONS
,
4640 if (!NT_SUCCESS(Status
))
4642 DPRINT("IopInitiatePnpIrp() failed with status 0x%08lx\n", Status
);
4643 DeviceRelations
= NULL
;
4647 DeviceRelations
= (PDEVICE_RELATIONS
)IoStatusBlock
.Information
;
4650 if (DeviceRelations
)
4652 Status
= IopQueryRemoveDeviceRelations(DeviceRelations
, FALSE
);
4653 if (!NT_SUCCESS(Status
))
4657 Status
= IopQueryRemoveChildDevices(DeviceNode
, FALSE
);
4658 if (!NT_SUCCESS(Status
))
4660 if (DeviceRelations
)
4661 IopCancelRemoveDeviceRelations(DeviceRelations
);
4665 if (IopPrepareDeviceForRemoval(PhysicalDeviceObject
, FALSE
) != STATUS_SUCCESS
)
4667 if (DeviceRelations
)
4668 IopCancelRemoveDeviceRelations(DeviceRelations
);
4669 IopCancelRemoveChildDevices(DeviceNode
);
4673 if (DeviceRelations
)
4674 IopSendRemoveDeviceRelations(DeviceRelations
);
4675 IopSendRemoveChildDevices(DeviceNode
);
4677 DeviceNode
->Problem
= CM_PROB_HELD_FOR_EJECT
;
4678 if (Capabilities
.EjectSupported
)
4680 if (IopSendEject(PhysicalDeviceObject
) != STATUS_SUCCESS
)
4687 DeviceNode
->Flags
|= DNF_DISABLED
;
4690 IopQueueTargetDeviceEvent(&GUID_DEVICE_EJECT
,
4691 &DeviceNode
->InstancePath
);
4696 IopQueueTargetDeviceEvent(&GUID_DEVICE_EJECT_VETOED
,
4697 &DeviceNode
->InstancePath
);
4705 IoInvalidateDeviceRelations(
4706 IN PDEVICE_OBJECT DeviceObject
,
4707 IN DEVICE_RELATION_TYPE Type
)
4709 PINVALIDATE_DEVICE_RELATION_DATA Data
;
4712 Data
= ExAllocatePool(NonPagedPool
, sizeof(INVALIDATE_DEVICE_RELATION_DATA
));
4716 ObReferenceObject(DeviceObject
);
4717 Data
->DeviceObject
= DeviceObject
;
4720 KeAcquireSpinLock(&IopDeviceRelationsSpinLock
, &OldIrql
);
4721 InsertTailList(&IopDeviceRelationsRequestList
, &Data
->RequestListEntry
);
4722 if (IopDeviceRelationsRequestInProgress
)
4724 KeReleaseSpinLock(&IopDeviceRelationsSpinLock
, OldIrql
);
4727 IopDeviceRelationsRequestInProgress
= TRUE
;
4728 KeReleaseSpinLock(&IopDeviceRelationsSpinLock
, OldIrql
);
4730 ExInitializeWorkItem(&IopDeviceRelationsWorkItem
,
4731 IopDeviceRelationsWorker
,
4733 ExQueueWorkItem(&IopDeviceRelationsWorkItem
,
4742 IoSynchronousInvalidateDeviceRelations(
4743 IN PDEVICE_OBJECT DeviceObject
,
4744 IN DEVICE_RELATION_TYPE Type
)
4751 /* Enumerate the device */
4752 return IopEnumerateDevice(DeviceObject
);
4753 case PowerRelations
:
4754 /* Not handled yet */
4755 return STATUS_NOT_IMPLEMENTED
;
4756 case TargetDeviceRelation
:
4758 return STATUS_SUCCESS
;
4760 /* Ejection relations are not supported */
4761 return STATUS_NOT_SUPPORTED
;
4770 IoTranslateBusAddress(IN INTERFACE_TYPE InterfaceType
,
4772 IN PHYSICAL_ADDRESS BusAddress
,
4773 IN OUT PULONG AddressSpace
,
4774 OUT PPHYSICAL_ADDRESS TranslatedAddress
)
4776 /* FIXME: Notify the resource arbiter */
4778 return HalTranslateBusAddress(InterfaceType
,