9bbaee827d98affffed28a728fc5661c0dbb5fd2
[reactos.git] / reactos / ntoskrnl / io / pnpmgr / pnpmgr.c
1 /*
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)
8 */
9
10 /* INCLUDES ******************************************************************/
11
12 #include <ntoskrnl.h>
13 #define NDEBUG
14 #include <debug.h>
15
16 /* GLOBALS *******************************************************************/
17
18 PDEVICE_NODE IopRootDeviceNode;
19 KSPIN_LOCK IopDeviceTreeLock;
20 ERESOURCE PpRegistryDeviceResource;
21 KGUARDED_MUTEX PpDeviceReferenceTableLock;
22 RTL_AVL_TABLE PpDeviceReferenceTable;
23
24 extern ERESOURCE IopDriverLoadResource;
25 extern ULONG ExpInitializationPhase;
26 extern BOOLEAN ExpInTextModeSetup;
27 extern BOOLEAN PnpSystemInit;
28
29 /* DATA **********************************************************************/
30
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;
37
38 typedef struct _INVALIDATE_DEVICE_RELATION_DATA
39 {
40 LIST_ENTRY RequestListEntry;
41 PDEVICE_OBJECT DeviceObject;
42 DEVICE_RELATION_TYPE Type;
43 } INVALIDATE_DEVICE_RELATION_DATA, *PINVALIDATE_DEVICE_RELATION_DATA;
44
45 /* FUNCTIONS *****************************************************************/
46 NTSTATUS
47 NTAPI
48 IopCreateDeviceKeyPath(IN PCUNICODE_STRING RegistryPath,
49 IN ULONG CreateOptions,
50 OUT PHANDLE Handle);
51
52 VOID
53 IopCancelPrepareDeviceForRemoval(PDEVICE_OBJECT DeviceObject);
54
55 NTSTATUS
56 IopPrepareDeviceForRemoval(PDEVICE_OBJECT DeviceObject, BOOLEAN Force);
57
58 PDEVICE_OBJECT
59 IopGetDeviceObjectFromDeviceInstance(PUNICODE_STRING DeviceInstance);
60
61 PDEVICE_NODE
62 FASTCALL
63 IopGetDeviceNode(PDEVICE_OBJECT DeviceObject)
64 {
65 return ((PEXTENDED_DEVOBJ_EXTENSION)DeviceObject->DeviceObjectExtension)->DeviceNode;
66 }
67
68 VOID
69 IopFixupDeviceId(PWCHAR String)
70 {
71 SIZE_T Length = wcslen(String), i;
72
73 for (i = 0; i < Length; i++)
74 {
75 if (String[i] == L'\\')
76 String[i] = L'#';
77 }
78 }
79
80 VOID
81 NTAPI
82 IopInstallCriticalDevice(PDEVICE_NODE DeviceNode)
83 {
84 NTSTATUS Status;
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;
95
96 /* Open the device instance key */
97 Status = IopCreateDeviceKeyPath(&DeviceNode->InstancePath, 0, &InstanceKey);
98 if (Status != STATUS_SUCCESS)
99 return;
100
101 Status = ZwQueryValueKey(InstanceKey,
102 &HardwareIdU,
103 KeyValuePartialInformation,
104 NULL,
105 0,
106 &HidLength);
107 if (Status != STATUS_BUFFER_OVERFLOW && Status != STATUS_BUFFER_TOO_SMALL)
108 {
109 ZwClose(InstanceKey);
110 return;
111 }
112
113 Status = ZwQueryValueKey(InstanceKey,
114 &CompatibleIdU,
115 KeyValuePartialInformation,
116 NULL,
117 0,
118 &CidLength);
119 if (Status != STATUS_BUFFER_OVERFLOW && Status != STATUS_BUFFER_TOO_SMALL)
120 {
121 CidLength = 0;
122 }
123
124 BufferLength = HidLength + CidLength;
125 BufferLength -= (((CidLength != 0) ? 2 : 1) * FIELD_OFFSET(KEY_VALUE_PARTIAL_INFORMATION, Data));
126
127 /* Allocate a buffer to hold data from both */
128 OriginalIdBuffer = IdBuffer = ExAllocatePool(PagedPool, BufferLength);
129 if (!IdBuffer)
130 {
131 ZwClose(InstanceKey);
132 return;
133 }
134
135 /* Compute the buffer size */
136 if (HidLength > CidLength)
137 BufferLength = HidLength;
138 else
139 BufferLength = CidLength;
140
141 PartialInfo = ExAllocatePool(PagedPool, BufferLength);
142 if (!PartialInfo)
143 {
144 ZwClose(InstanceKey);
145 ExFreePool(OriginalIdBuffer);
146 return;
147 }
148
149 Status = ZwQueryValueKey(InstanceKey,
150 &HardwareIdU,
151 KeyValuePartialInformation,
152 PartialInfo,
153 HidLength,
154 &HidLength);
155 if (Status != STATUS_SUCCESS)
156 {
157 ExFreePool(PartialInfo);
158 ExFreePool(OriginalIdBuffer);
159 ZwClose(InstanceKey);
160 return;
161 }
162
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);
166
167 if (CidLength != 0)
168 {
169 Status = ZwQueryValueKey(InstanceKey,
170 &CompatibleIdU,
171 KeyValuePartialInformation,
172 PartialInfo,
173 CidLength,
174 &CidLength);
175 if (Status != STATUS_SUCCESS)
176 {
177 ExFreePool(PartialInfo);
178 ExFreePool(OriginalIdBuffer);
179 ZwClose(InstanceKey);
180 return;
181 }
182
183 /* Copy CID next */
184 CidLength = PartialInfo->DataLength;
185 RtlCopyMemory(((PUCHAR)IdBuffer) + HidLength, PartialInfo->Data, CidLength);
186 }
187
188 /* Free our temp buffer */
189 ExFreePool(PartialInfo);
190
191 InitializeObjectAttributes(&ObjectAttributes,
192 &CriticalDeviceKeyU,
193 OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE,
194 NULL,
195 NULL);
196 Status = ZwOpenKey(&CriticalDeviceKey,
197 KEY_ENUMERATE_SUB_KEYS,
198 &ObjectAttributes);
199 if (!NT_SUCCESS(Status))
200 {
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);
205 return;
206 }
207
208 while (*IdBuffer)
209 {
210 USHORT StringLength = (USHORT)wcslen(IdBuffer) + 1, Index;
211
212 IopFixupDeviceId(IdBuffer);
213
214 /* Look through all subkeys for a match */
215 for (Index = 0; TRUE; Index++)
216 {
217 ULONG NeededLength;
218 PKEY_BASIC_INFORMATION BasicInfo;
219
220 Status = ZwEnumerateKey(CriticalDeviceKey,
221 Index,
222 KeyBasicInformation,
223 NULL,
224 0,
225 &NeededLength);
226 if (Status == STATUS_NO_MORE_ENTRIES)
227 break;
228 else if (Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
229 {
230 UNICODE_STRING ChildIdNameU, RegKeyNameU;
231
232 BasicInfo = ExAllocatePool(PagedPool, NeededLength);
233 if (!BasicInfo)
234 {
235 /* No memory */
236 ExFreePool(OriginalIdBuffer);
237 ZwClose(CriticalDeviceKey);
238 ZwClose(InstanceKey);
239 return;
240 }
241
242 Status = ZwEnumerateKey(CriticalDeviceKey,
243 Index,
244 KeyBasicInformation,
245 BasicInfo,
246 NeededLength,
247 &NeededLength);
248 if (Status != STATUS_SUCCESS)
249 {
250 /* This shouldn't happen */
251 ExFreePool(BasicInfo);
252 continue;
253 }
254
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;
259
260 if (RtlEqualUnicodeString(&ChildIdNameU, &RegKeyNameU, TRUE))
261 {
262 HANDLE ChildKeyHandle;
263
264 InitializeObjectAttributes(&ObjectAttributes,
265 &ChildIdNameU,
266 OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE,
267 CriticalDeviceKey,
268 NULL);
269
270 Status = ZwOpenKey(&ChildKeyHandle,
271 KEY_QUERY_VALUE,
272 &ObjectAttributes);
273 if (Status != STATUS_SUCCESS)
274 {
275 ExFreePool(BasicInfo);
276 continue;
277 }
278
279 /* Check if there's already a driver installed */
280 Status = ZwQueryValueKey(InstanceKey,
281 &ClassGuidU,
282 KeyValuePartialInformation,
283 NULL,
284 0,
285 &NeededLength);
286 if (Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
287 {
288 ExFreePool(BasicInfo);
289 continue;
290 }
291
292 Status = ZwQueryValueKey(ChildKeyHandle,
293 &ClassGuidU,
294 KeyValuePartialInformation,
295 NULL,
296 0,
297 &NeededLength);
298 if (Status != STATUS_BUFFER_OVERFLOW && Status != STATUS_BUFFER_TOO_SMALL)
299 {
300 ExFreePool(BasicInfo);
301 continue;
302 }
303
304 PartialInfo = ExAllocatePool(PagedPool, NeededLength);
305 if (!PartialInfo)
306 {
307 ExFreePool(OriginalIdBuffer);
308 ExFreePool(BasicInfo);
309 ZwClose(InstanceKey);
310 ZwClose(ChildKeyHandle);
311 ZwClose(CriticalDeviceKey);
312 return;
313 }
314
315 /* Read ClassGUID entry in the CDDB */
316 Status = ZwQueryValueKey(ChildKeyHandle,
317 &ClassGuidU,
318 KeyValuePartialInformation,
319 PartialInfo,
320 NeededLength,
321 &NeededLength);
322 if (Status != STATUS_SUCCESS)
323 {
324 ExFreePool(BasicInfo);
325 continue;
326 }
327
328 /* Write it to the ENUM key */
329 Status = ZwSetValueKey(InstanceKey,
330 &ClassGuidU,
331 0,
332 REG_SZ,
333 PartialInfo->Data,
334 PartialInfo->DataLength);
335 if (Status != STATUS_SUCCESS)
336 {
337 ExFreePool(BasicInfo);
338 ExFreePool(PartialInfo);
339 ZwClose(ChildKeyHandle);
340 continue;
341 }
342
343 Status = ZwQueryValueKey(ChildKeyHandle,
344 &ServiceU,
345 KeyValuePartialInformation,
346 NULL,
347 0,
348 &NeededLength);
349 if (Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
350 {
351 ExFreePool(PartialInfo);
352 PartialInfo = ExAllocatePool(PagedPool, NeededLength);
353 if (!PartialInfo)
354 {
355 ExFreePool(OriginalIdBuffer);
356 ExFreePool(BasicInfo);
357 ZwClose(InstanceKey);
358 ZwClose(ChildKeyHandle);
359 ZwClose(CriticalDeviceKey);
360 return;
361 }
362
363 /* Read the service entry from the CDDB */
364 Status = ZwQueryValueKey(ChildKeyHandle,
365 &ServiceU,
366 KeyValuePartialInformation,
367 PartialInfo,
368 NeededLength,
369 &NeededLength);
370 if (Status != STATUS_SUCCESS)
371 {
372 ExFreePool(BasicInfo);
373 ExFreePool(PartialInfo);
374 ZwClose(ChildKeyHandle);
375 continue;
376 }
377
378 /* Write it to the ENUM key */
379 Status = ZwSetValueKey(InstanceKey,
380 &ServiceU,
381 0,
382 REG_SZ,
383 PartialInfo->Data,
384 PartialInfo->DataLength);
385 if (Status != STATUS_SUCCESS)
386 {
387 ExFreePool(BasicInfo);
388 ExFreePool(PartialInfo);
389 ZwClose(ChildKeyHandle);
390 continue;
391 }
392
393 DPRINT("Installed service '%S' for critical device '%wZ'\n", PartialInfo->Data, &ChildIdNameU);
394 }
395 else
396 {
397 DPRINT1("Installed NULL service for critical device '%wZ'\n", &ChildIdNameU);
398 }
399
400 ExFreePool(OriginalIdBuffer);
401 ExFreePool(PartialInfo);
402 ExFreePool(BasicInfo);
403 ZwClose(InstanceKey);
404 ZwClose(ChildKeyHandle);
405 ZwClose(CriticalDeviceKey);
406
407 /* That's it */
408 return;
409 }
410
411 ExFreePool(BasicInfo);
412 }
413 else
414 {
415 /* Umm, not sure what happened here */
416 continue;
417 }
418 }
419
420 /* Advance to the next ID */
421 IdBuffer += StringLength;
422 }
423
424 ExFreePool(OriginalIdBuffer);
425 ZwClose(InstanceKey);
426 ZwClose(CriticalDeviceKey);
427 }
428
429 NTSTATUS
430 FASTCALL
431 IopInitializeDevice(PDEVICE_NODE DeviceNode,
432 PDRIVER_OBJECT DriverObject)
433 {
434 PDEVICE_OBJECT Fdo;
435 NTSTATUS Status;
436
437 if (!DriverObject)
438 {
439 /* Special case for bus driven devices */
440 DeviceNode->Flags |= DNF_ADDED;
441 return STATUS_SUCCESS;
442 }
443
444 if (!DriverObject->DriverExtension->AddDevice)
445 {
446 DeviceNode->Flags |= DNF_LEGACY_DRIVER;
447 }
448
449 if (DeviceNode->Flags & DNF_LEGACY_DRIVER)
450 {
451 DeviceNode->Flags |= DNF_ADDED + DNF_STARTED;
452 return STATUS_SUCCESS;
453 }
454
455 /* This is a Plug and Play driver */
456 DPRINT("Plug and Play driver found\n");
457 ASSERT(DeviceNode->PhysicalDeviceObject);
458
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))
465 {
466 DPRINT1("%wZ->AddDevice(%wZ) failed with status 0x%x\n",
467 &DriverObject->DriverName,
468 &DeviceNode->InstancePath,
469 Status);
470 IopDeviceNodeSetFlag(DeviceNode, DNF_DISABLED);
471 DeviceNode->Problem = CM_PROB_FAILED_ADD;
472 return Status;
473 }
474
475 Fdo = IoGetAttachedDeviceReference(DeviceNode->PhysicalDeviceObject);
476
477 /* Check if we have a ACPI device (needed for power management) */
478 if (Fdo->DeviceType == FILE_DEVICE_ACPI)
479 {
480 static BOOLEAN SystemPowerDeviceNodeCreated = FALSE;
481
482 /* There can be only one system power device */
483 if (!SystemPowerDeviceNodeCreated)
484 {
485 PopSystemPowerDeviceNode = DeviceNode;
486 ObReferenceObject(PopSystemPowerDeviceNode->PhysicalDeviceObject);
487 SystemPowerDeviceNodeCreated = TRUE;
488 }
489 }
490
491 ObDereferenceObject(Fdo);
492
493 IopDeviceNodeSetFlag(DeviceNode, DNF_ADDED);
494
495 return STATUS_SUCCESS;
496 }
497
498 static
499 NTSTATUS
500 NTAPI
501 IopSendEject(IN PDEVICE_OBJECT DeviceObject)
502 {
503 IO_STACK_LOCATION Stack;
504 PVOID Dummy;
505
506 RtlZeroMemory(&Stack, sizeof(IO_STACK_LOCATION));
507 Stack.MajorFunction = IRP_MJ_PNP;
508 Stack.MinorFunction = IRP_MN_EJECT;
509
510 return IopSynchronousCall(DeviceObject, &Stack, &Dummy);
511 }
512
513 static
514 VOID
515 NTAPI
516 IopSendSurpriseRemoval(IN PDEVICE_OBJECT DeviceObject)
517 {
518 IO_STACK_LOCATION Stack;
519 PVOID Dummy;
520
521 RtlZeroMemory(&Stack, sizeof(IO_STACK_LOCATION));
522 Stack.MajorFunction = IRP_MJ_PNP;
523 Stack.MinorFunction = IRP_MN_SURPRISE_REMOVAL;
524
525 /* Drivers should never fail a IRP_MN_SURPRISE_REMOVAL request */
526 IopSynchronousCall(DeviceObject, &Stack, &Dummy);
527 }
528
529 static
530 NTSTATUS
531 NTAPI
532 IopQueryRemoveDevice(IN PDEVICE_OBJECT DeviceObject)
533 {
534 PDEVICE_NODE DeviceNode = IopGetDeviceNode(DeviceObject);
535 IO_STACK_LOCATION Stack;
536 PVOID Dummy;
537 NTSTATUS Status;
538
539 ASSERT(DeviceNode);
540
541 IopQueueTargetDeviceEvent(&GUID_DEVICE_REMOVE_PENDING,
542 &DeviceNode->InstancePath);
543
544 RtlZeroMemory(&Stack, sizeof(IO_STACK_LOCATION));
545 Stack.MajorFunction = IRP_MJ_PNP;
546 Stack.MinorFunction = IRP_MN_QUERY_REMOVE_DEVICE;
547
548 Status = IopSynchronousCall(DeviceObject, &Stack, &Dummy);
549
550 IopNotifyPlugPlayNotification(DeviceObject,
551 EventCategoryTargetDeviceChange,
552 &GUID_TARGET_DEVICE_QUERY_REMOVE,
553 NULL,
554 NULL);
555
556 if (!NT_SUCCESS(Status))
557 {
558 DPRINT1("Removal vetoed by %wZ\n", &DeviceNode->InstancePath);
559 IopQueueTargetDeviceEvent(&GUID_DEVICE_REMOVAL_VETOED,
560 &DeviceNode->InstancePath);
561 }
562
563 return Status;
564 }
565
566 static
567 NTSTATUS
568 NTAPI
569 IopQueryStopDevice(IN PDEVICE_OBJECT DeviceObject)
570 {
571 IO_STACK_LOCATION Stack;
572 PVOID Dummy;
573
574 RtlZeroMemory(&Stack, sizeof(IO_STACK_LOCATION));
575 Stack.MajorFunction = IRP_MJ_PNP;
576 Stack.MinorFunction = IRP_MN_QUERY_STOP_DEVICE;
577
578 return IopSynchronousCall(DeviceObject, &Stack, &Dummy);
579 }
580
581 static
582 VOID
583 NTAPI
584 IopSendRemoveDevice(IN PDEVICE_OBJECT DeviceObject)
585 {
586 IO_STACK_LOCATION Stack;
587 PVOID Dummy;
588 PDEVICE_NODE DeviceNode = IopGetDeviceNode(DeviceObject);
589
590 /* Drop all our state for this device in case it isn't really going away */
591 DeviceNode->Flags &= DNF_ENUMERATED | DNF_PROCESSED;
592
593 RtlZeroMemory(&Stack, sizeof(IO_STACK_LOCATION));
594 Stack.MajorFunction = IRP_MJ_PNP;
595 Stack.MinorFunction = IRP_MN_REMOVE_DEVICE;
596
597 /* Drivers should never fail a IRP_MN_REMOVE_DEVICE request */
598 IopSynchronousCall(DeviceObject, &Stack, &Dummy);
599
600 IopNotifyPlugPlayNotification(DeviceObject,
601 EventCategoryTargetDeviceChange,
602 &GUID_TARGET_DEVICE_REMOVE_COMPLETE,
603 NULL,
604 NULL);
605 ObDereferenceObject(DeviceObject);
606 }
607
608 static
609 VOID
610 NTAPI
611 IopCancelRemoveDevice(IN PDEVICE_OBJECT DeviceObject)
612 {
613 IO_STACK_LOCATION Stack;
614 PVOID Dummy;
615
616 RtlZeroMemory(&Stack, sizeof(IO_STACK_LOCATION));
617 Stack.MajorFunction = IRP_MJ_PNP;
618 Stack.MinorFunction = IRP_MN_CANCEL_REMOVE_DEVICE;
619
620 /* Drivers should never fail a IRP_MN_CANCEL_REMOVE_DEVICE request */
621 IopSynchronousCall(DeviceObject, &Stack, &Dummy);
622
623 IopNotifyPlugPlayNotification(DeviceObject,
624 EventCategoryTargetDeviceChange,
625 &GUID_TARGET_DEVICE_REMOVE_CANCELLED,
626 NULL,
627 NULL);
628 }
629
630 static
631 VOID
632 NTAPI
633 IopSendStopDevice(IN PDEVICE_OBJECT DeviceObject)
634 {
635 IO_STACK_LOCATION Stack;
636 PVOID Dummy;
637
638 RtlZeroMemory(&Stack, sizeof(IO_STACK_LOCATION));
639 Stack.MajorFunction = IRP_MJ_PNP;
640 Stack.MinorFunction = IRP_MN_STOP_DEVICE;
641
642 /* Drivers should never fail a IRP_MN_STOP_DEVICE request */
643 IopSynchronousCall(DeviceObject, &Stack, &Dummy);
644 }
645
646 VOID
647 NTAPI
648 IopStartDevice2(IN PDEVICE_OBJECT DeviceObject)
649 {
650 IO_STACK_LOCATION Stack;
651 PDEVICE_NODE DeviceNode;
652 NTSTATUS Status;
653 PVOID Dummy;
654 DEVICE_CAPABILITIES DeviceCapabilities;
655
656 /* Get the device node */
657 DeviceNode = IopGetDeviceNode(DeviceObject);
658
659 ASSERT(!(DeviceNode->Flags & DNF_DISABLED));
660
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;
665
666 Stack.Parameters.StartDevice.AllocatedResources =
667 DeviceNode->ResourceList;
668 Stack.Parameters.StartDevice.AllocatedResourcesTranslated =
669 DeviceNode->ResourceListTranslated;
670
671 /* Do the call */
672 Status = IopSynchronousCall(DeviceObject, &Stack, &Dummy);
673 if (!NT_SUCCESS(Status))
674 {
675 /* Send an IRP_MN_REMOVE_DEVICE request */
676 IopRemoveDevice(DeviceNode);
677
678 /* Set the appropriate flag */
679 DeviceNode->Flags |= DNF_START_FAILED;
680 DeviceNode->Problem = CM_PROB_FAILED_START;
681
682 DPRINT1("Warning: PnP Start failed (%wZ) [Status: 0x%x]\n", &DeviceNode->InstancePath, Status);
683 return;
684 }
685
686 DPRINT("Sending IRP_MN_QUERY_CAPABILITIES to device stack (after start)\n");
687
688 Status = IopQueryDeviceCapabilities(DeviceNode, &DeviceCapabilities);
689 if (!NT_SUCCESS(Status))
690 {
691 DPRINT1("IopInitiatePnpIrp() failed (Status 0x%08lx)\n", Status);
692 }
693
694 /* Invalidate device state so IRP_MN_QUERY_PNP_DEVICE_STATE is sent */
695 IoInvalidateDeviceState(DeviceObject);
696
697 /* Otherwise, mark us as started */
698 DeviceNode->Flags |= DNF_STARTED;
699 DeviceNode->Flags &= ~DNF_STOPPED;
700
701 /* We now need enumeration */
702 DeviceNode->Flags |= DNF_NEED_ENUMERATION_ONLY;
703 }
704
705 NTSTATUS
706 NTAPI
707 IopStartAndEnumerateDevice(IN PDEVICE_NODE DeviceNode)
708 {
709 PDEVICE_OBJECT DeviceObject;
710 NTSTATUS Status;
711 PAGED_CODE();
712
713 /* Sanity check */
714 ASSERT((DeviceNode->Flags & DNF_ADDED));
715 ASSERT((DeviceNode->Flags & (DNF_RESOURCE_ASSIGNED |
716 DNF_RESOURCE_REPORTED |
717 DNF_NO_RESOURCE_REQUIRED)));
718
719 /* Get the device object */
720 DeviceObject = DeviceNode->PhysicalDeviceObject;
721
722 /* Check if we're not started yet */
723 if (!(DeviceNode->Flags & DNF_STARTED))
724 {
725 /* Start us */
726 IopStartDevice2(DeviceObject);
727 }
728
729 /* Do we need to query IDs? This happens in the case of manual reporting */
730 #if 0
731 if (DeviceNode->Flags & DNF_NEED_QUERY_IDS)
732 {
733 DPRINT1("Warning: Device node has DNF_NEED_QUERY_IDS\n");
734 /* And that case shouldn't happen yet */
735 ASSERT(FALSE);
736 }
737 #endif
738
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))
742 {
743 /* Enumerate us */
744 IoSynchronousInvalidateDeviceRelations(DeviceObject, BusRelations);
745 Status = STATUS_SUCCESS;
746 }
747 else
748 {
749 /* Nothing to do */
750 Status = STATUS_SUCCESS;
751 }
752
753 /* Return */
754 return Status;
755 }
756
757 NTSTATUS
758 IopStopDevice(
759 PDEVICE_NODE DeviceNode)
760 {
761 NTSTATUS Status;
762
763 DPRINT("Stopping device: %wZ\n", &DeviceNode->InstancePath);
764
765 Status = IopQueryStopDevice(DeviceNode->PhysicalDeviceObject);
766 if (NT_SUCCESS(Status))
767 {
768 IopSendStopDevice(DeviceNode->PhysicalDeviceObject);
769
770 DeviceNode->Flags &= ~(DNF_STARTED | DNF_START_REQUEST_PENDING);
771 DeviceNode->Flags |= DNF_STOPPED;
772
773 return STATUS_SUCCESS;
774 }
775
776 return Status;
777 }
778
779 NTSTATUS
780 IopStartDevice(
781 PDEVICE_NODE DeviceNode)
782 {
783 NTSTATUS Status;
784 HANDLE InstanceHandle = NULL, ControlHandle = NULL;
785 UNICODE_STRING KeyName;
786 OBJECT_ATTRIBUTES ObjectAttributes;
787
788 if (DeviceNode->Flags & DNF_DISABLED)
789 return STATUS_SUCCESS;
790
791 Status = IopAssignDeviceResources(DeviceNode);
792 if (!NT_SUCCESS(Status))
793 goto ByeBye;
794
795 /* New PnP ABI */
796 IopStartAndEnumerateDevice(DeviceNode);
797
798 /* FIX: Should be done in new device instance code */
799 Status = IopCreateDeviceKeyPath(&DeviceNode->InstancePath, 0, &InstanceHandle);
800 if (!NT_SUCCESS(Status))
801 goto ByeBye;
802
803 /* FIX: Should be done in IoXxxPrepareDriverLoading */
804 // {
805 RtlInitUnicodeString(&KeyName, L"Control");
806 InitializeObjectAttributes(&ObjectAttributes,
807 &KeyName,
808 OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
809 InstanceHandle,
810 NULL);
811 Status = ZwCreateKey(&ControlHandle, KEY_SET_VALUE, &ObjectAttributes, 0, NULL, REG_OPTION_VOLATILE, NULL);
812 if (!NT_SUCCESS(Status))
813 goto ByeBye;
814
815 RtlInitUnicodeString(&KeyName, L"ActiveService");
816 Status = ZwSetValueKey(ControlHandle, &KeyName, 0, REG_SZ, DeviceNode->ServiceName.Buffer, DeviceNode->ServiceName.Length);
817 // }
818
819 ByeBye:
820 if (ControlHandle != NULL)
821 ZwClose(ControlHandle);
822
823 if (InstanceHandle != NULL)
824 ZwClose(InstanceHandle);
825
826 return Status;
827 }
828
829 NTSTATUS
830 NTAPI
831 IopQueryDeviceCapabilities(PDEVICE_NODE DeviceNode,
832 PDEVICE_CAPABILITIES DeviceCaps)
833 {
834 IO_STATUS_BLOCK StatusBlock;
835 IO_STACK_LOCATION Stack;
836 NTSTATUS Status;
837 HANDLE InstanceKey;
838 UNICODE_STRING ValueName;
839
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;
846
847 /* Set up the Stack */
848 RtlZeroMemory(&Stack, sizeof(IO_STACK_LOCATION));
849 Stack.Parameters.DeviceCapabilities.Capabilities = DeviceCaps;
850
851 /* Send the IRP */
852 Status = IopInitiatePnpIrp(DeviceNode->PhysicalDeviceObject,
853 &StatusBlock,
854 IRP_MN_QUERY_CAPABILITIES,
855 &Stack);
856 if (!NT_SUCCESS(Status))
857 {
858 DPRINT1("IRP_MN_QUERY_CAPABILITIES failed with status 0x%x\n", Status);
859 return Status;
860 }
861
862 DeviceNode->CapabilityFlags = *(PULONG)((ULONG_PTR)&DeviceCaps->Version + sizeof(DeviceCaps->Version));
863
864 if (DeviceCaps->NoDisplayInUI)
865 DeviceNode->UserFlags |= DNUF_DONT_SHOW_IN_UI;
866 else
867 DeviceNode->UserFlags &= ~DNUF_DONT_SHOW_IN_UI;
868
869 Status = IopCreateDeviceKeyPath(&DeviceNode->InstancePath, 0, &InstanceKey);
870 if (NT_SUCCESS(Status))
871 {
872 /* Set 'Capabilities' value */
873 RtlInitUnicodeString(&ValueName, L"Capabilities");
874 Status = ZwSetValueKey(InstanceKey,
875 &ValueName,
876 0,
877 REG_DWORD,
878 (PVOID)&DeviceNode->CapabilityFlags,
879 sizeof(ULONG));
880
881 /* Set 'UINumber' value */
882 if (DeviceCaps->UINumber != MAXULONG)
883 {
884 RtlInitUnicodeString(&ValueName, L"UINumber");
885 Status = ZwSetValueKey(InstanceKey,
886 &ValueName,
887 0,
888 REG_DWORD,
889 &DeviceCaps->UINumber,
890 sizeof(ULONG));
891 }
892 }
893
894 return Status;
895 }
896
897 static
898 VOID
899 NTAPI
900 IopDeviceRelationsWorker(
901 _In_ PVOID Context)
902 {
903 PLIST_ENTRY ListEntry;
904 PINVALIDATE_DEVICE_RELATION_DATA Data;
905 KIRQL OldIrql;
906
907 KeAcquireSpinLock(&IopDeviceRelationsSpinLock, &OldIrql);
908 while (!IsListEmpty(&IopDeviceRelationsRequestList))
909 {
910 ListEntry = RemoveHeadList(&IopDeviceRelationsRequestList);
911 KeReleaseSpinLock(&IopDeviceRelationsSpinLock, OldIrql);
912 Data = CONTAINING_RECORD(ListEntry,
913 INVALIDATE_DEVICE_RELATION_DATA,
914 RequestListEntry);
915
916 IoSynchronousInvalidateDeviceRelations(Data->DeviceObject,
917 Data->Type);
918
919 ObDereferenceObject(Data->DeviceObject);
920 ExFreePool(Data);
921 KeAcquireSpinLock(&IopDeviceRelationsSpinLock, &OldIrql);
922 }
923 IopDeviceRelationsRequestInProgress = FALSE;
924 KeReleaseSpinLock(&IopDeviceRelationsSpinLock, OldIrql);
925 }
926
927 NTSTATUS
928 IopGetSystemPowerDeviceObject(PDEVICE_OBJECT *DeviceObject)
929 {
930 KIRQL OldIrql;
931
932 if (PopSystemPowerDeviceNode)
933 {
934 KeAcquireSpinLock(&IopDeviceTreeLock, &OldIrql);
935 *DeviceObject = PopSystemPowerDeviceNode->PhysicalDeviceObject;
936 KeReleaseSpinLock(&IopDeviceTreeLock, OldIrql);
937
938 return STATUS_SUCCESS;
939 }
940
941 return STATUS_UNSUCCESSFUL;
942 }
943
944 USHORT
945 NTAPI
946 IopGetBusTypeGuidIndex(LPGUID BusTypeGuid)
947 {
948 USHORT i = 0, FoundIndex = 0xFFFF;
949 ULONG NewSize;
950 PVOID NewList;
951
952 /* Acquire the lock */
953 ExAcquireFastMutex(&PnpBusTypeGuidList->Lock);
954
955 /* Loop all entries */
956 while (i < PnpBusTypeGuidList->GuidCount)
957 {
958 /* Try to find a match */
959 if (RtlCompareMemory(BusTypeGuid,
960 &PnpBusTypeGuidList->Guids[i],
961 sizeof(GUID)) == sizeof(GUID))
962 {
963 /* Found it */
964 FoundIndex = i;
965 goto Quickie;
966 }
967 i++;
968 }
969
970 /* Check if we have to grow the list */
971 if (PnpBusTypeGuidList->GuidCount)
972 {
973 /* Calculate the new size */
974 NewSize = sizeof(IO_BUS_TYPE_GUID_LIST) +
975 (sizeof(GUID) * PnpBusTypeGuidList->GuidCount);
976
977 /* Allocate the new copy */
978 NewList = ExAllocatePool(PagedPool, NewSize);
979
980 if (!NewList) {
981 /* Fail */
982 ExFreePool(PnpBusTypeGuidList);
983 goto Quickie;
984 }
985
986 /* Now copy them, decrease the size too */
987 NewSize -= sizeof(GUID);
988 RtlCopyMemory(NewList, PnpBusTypeGuidList, NewSize);
989
990 /* Free the old list */
991 ExFreePool(PnpBusTypeGuidList);
992
993 /* Use the new buffer */
994 PnpBusTypeGuidList = NewList;
995 }
996
997 /* Copy the new GUID */
998 RtlCopyMemory(&PnpBusTypeGuidList->Guids[PnpBusTypeGuidList->GuidCount],
999 BusTypeGuid,
1000 sizeof(GUID));
1001
1002 /* The new entry is the index */
1003 FoundIndex = (USHORT)PnpBusTypeGuidList->GuidCount;
1004 PnpBusTypeGuidList->GuidCount++;
1005
1006 Quickie:
1007 ExReleaseFastMutex(&PnpBusTypeGuidList->Lock);
1008 return FoundIndex;
1009 }
1010
1011 /*
1012 * DESCRIPTION
1013 * Creates a device node
1014 *
1015 * ARGUMENTS
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
1021 *
1022 * RETURN VALUE
1023 * Status
1024 */
1025 NTSTATUS
1026 IopCreateDeviceNode(PDEVICE_NODE ParentNode,
1027 PDEVICE_OBJECT PhysicalDeviceObject,
1028 PUNICODE_STRING ServiceName,
1029 PDEVICE_NODE *DeviceNode)
1030 {
1031 PDEVICE_NODE Node;
1032 NTSTATUS Status;
1033 KIRQL OldIrql;
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;
1039 ULONG LegacyValue;
1040 UNICODE_STRING ClassGUID;
1041 HANDLE InstanceHandle;
1042
1043 DPRINT("ParentNode 0x%p PhysicalDeviceObject 0x%p ServiceName %wZ\n",
1044 ParentNode, PhysicalDeviceObject, ServiceName);
1045
1046 Node = ExAllocatePoolWithTag(NonPagedPool, sizeof(DEVICE_NODE), TAG_IO_DEVNODE);
1047 if (!Node)
1048 {
1049 return STATUS_INSUFFICIENT_RESOURCES;
1050 }
1051
1052 RtlZeroMemory(Node, sizeof(DEVICE_NODE));
1053
1054 if (!ServiceName)
1055 ServiceName1 = &UnknownDeviceName;
1056 else
1057 ServiceName1 = ServiceName;
1058
1059 if (!PhysicalDeviceObject)
1060 {
1061 FullServiceName.MaximumLength = LegacyPrefix.Length + ServiceName1->Length;
1062 FullServiceName.Length = 0;
1063 FullServiceName.Buffer = ExAllocatePool(PagedPool, FullServiceName.MaximumLength);
1064 if (!FullServiceName.Buffer)
1065 {
1066 ExFreePoolWithTag(Node, TAG_IO_DEVNODE);
1067 return STATUS_INSUFFICIENT_RESOURCES;
1068 }
1069
1070 RtlAppendUnicodeStringToString(&FullServiceName, &LegacyPrefix);
1071 RtlAppendUnicodeStringToString(&FullServiceName, ServiceName1);
1072
1073 Status = PnpRootCreateDevice(&FullServiceName, NULL, &PhysicalDeviceObject, &Node->InstancePath);
1074 if (!NT_SUCCESS(Status))
1075 {
1076 DPRINT1("PnpRootCreateDevice() failed with status 0x%08X\n", Status);
1077 ExFreePoolWithTag(Node, TAG_IO_DEVNODE);
1078 return Status;
1079 }
1080
1081 /* Create the device key for legacy drivers */
1082 Status = IopCreateDeviceKeyPath(&Node->InstancePath, REG_OPTION_VOLATILE, &InstanceHandle);
1083 if (!NT_SUCCESS(Status))
1084 {
1085 ZwClose(InstanceHandle);
1086 ExFreePoolWithTag(Node, TAG_IO_DEVNODE);
1087 ExFreePool(FullServiceName.Buffer);
1088 return Status;
1089 }
1090
1091 Node->ServiceName.Buffer = ExAllocatePool(PagedPool, ServiceName1->Length);
1092 if (!Node->ServiceName.Buffer)
1093 {
1094 ZwClose(InstanceHandle);
1095 ExFreePoolWithTag(Node, TAG_IO_DEVNODE);
1096 ExFreePool(FullServiceName.Buffer);
1097 return Status;
1098 }
1099
1100 Node->ServiceName.MaximumLength = ServiceName1->Length;
1101 Node->ServiceName.Length = 0;
1102
1103 RtlAppendUnicodeStringToString(&Node->ServiceName, ServiceName1);
1104
1105 if (ServiceName)
1106 {
1107 RtlInitUnicodeString(&KeyName, L"Service");
1108 Status = ZwSetValueKey(InstanceHandle, &KeyName, 0, REG_SZ, ServiceName->Buffer, ServiceName->Length);
1109 }
1110
1111 if (NT_SUCCESS(Status))
1112 {
1113 RtlInitUnicodeString(&KeyName, L"Legacy");
1114
1115 LegacyValue = 1;
1116 Status = ZwSetValueKey(InstanceHandle, &KeyName, 0, REG_DWORD, &LegacyValue, sizeof(LegacyValue));
1117 if (NT_SUCCESS(Status))
1118 {
1119 RtlInitUnicodeString(&KeyName, L"Class");
1120
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))
1124 {
1125 RtlInitUnicodeString(&KeyName, L"ClassGUID");
1126
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))
1130 {
1131 RtlInitUnicodeString(&KeyName, L"DeviceDesc");
1132
1133 Status = ZwSetValueKey(InstanceHandle, &KeyName, 0, REG_SZ, ServiceName1->Buffer, ServiceName1->Length + sizeof(UNICODE_NULL));
1134 }
1135 }
1136 }
1137 }
1138
1139 ZwClose(InstanceHandle);
1140 ExFreePool(FullServiceName.Buffer);
1141
1142 if (!NT_SUCCESS(Status))
1143 {
1144 ExFreePoolWithTag(Node, TAG_IO_DEVNODE);
1145 return Status;
1146 }
1147
1148 IopDeviceNodeSetFlag(Node, DNF_LEGACY_DRIVER);
1149 IopDeviceNodeSetFlag(Node, DNF_PROCESSED);
1150 IopDeviceNodeSetFlag(Node, DNF_ADDED);
1151 IopDeviceNodeSetFlag(Node, DNF_STARTED);
1152 }
1153
1154 Node->PhysicalDeviceObject = PhysicalDeviceObject;
1155
1156 ((PEXTENDED_DEVOBJ_EXTENSION)PhysicalDeviceObject->DeviceObjectExtension)->DeviceNode = Node;
1157
1158 if (ParentNode)
1159 {
1160 KeAcquireSpinLock(&IopDeviceTreeLock, &OldIrql);
1161 Node->Parent = ParentNode;
1162 Node->Sibling = NULL;
1163 if (ParentNode->LastChild == NULL)
1164 {
1165 ParentNode->Child = Node;
1166 ParentNode->LastChild = Node;
1167 }
1168 else
1169 {
1170 ParentNode->LastChild->Sibling = Node;
1171 ParentNode->LastChild = Node;
1172 }
1173 KeReleaseSpinLock(&IopDeviceTreeLock, OldIrql);
1174 Node->Level = ParentNode->Level + 1;
1175 }
1176
1177 PhysicalDeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
1178
1179 *DeviceNode = Node;
1180
1181 return STATUS_SUCCESS;
1182 }
1183
1184 NTSTATUS
1185 IopFreeDeviceNode(PDEVICE_NODE DeviceNode)
1186 {
1187 KIRQL OldIrql;
1188 PDEVICE_NODE PrevSibling = NULL;
1189
1190 /* All children must be deleted before a parent is deleted */
1191 ASSERT(!DeviceNode->Child);
1192 ASSERT(DeviceNode->PhysicalDeviceObject);
1193
1194 KeAcquireSpinLock(&IopDeviceTreeLock, &OldIrql);
1195
1196 /* Get previous sibling */
1197 if (DeviceNode->Parent && DeviceNode->Parent->Child != DeviceNode)
1198 {
1199 PrevSibling = DeviceNode->Parent->Child;
1200 while (PrevSibling->Sibling != DeviceNode)
1201 PrevSibling = PrevSibling->Sibling;
1202 }
1203
1204 /* Unlink from parent if it exists */
1205 if (DeviceNode->Parent)
1206 {
1207 if (DeviceNode->Parent->LastChild == DeviceNode)
1208 {
1209 DeviceNode->Parent->LastChild = PrevSibling;
1210 if (PrevSibling)
1211 PrevSibling->Sibling = NULL;
1212 }
1213 if (DeviceNode->Parent->Child == DeviceNode)
1214 DeviceNode->Parent->Child = DeviceNode->Sibling;
1215 }
1216
1217 /* Unlink from sibling list */
1218 if (PrevSibling)
1219 PrevSibling->Sibling = DeviceNode->Sibling;
1220
1221 KeReleaseSpinLock(&IopDeviceTreeLock, OldIrql);
1222
1223 RtlFreeUnicodeString(&DeviceNode->InstancePath);
1224
1225 RtlFreeUnicodeString(&DeviceNode->ServiceName);
1226
1227 if (DeviceNode->ResourceList)
1228 {
1229 ExFreePool(DeviceNode->ResourceList);
1230 }
1231
1232 if (DeviceNode->ResourceListTranslated)
1233 {
1234 ExFreePool(DeviceNode->ResourceListTranslated);
1235 }
1236
1237 if (DeviceNode->ResourceRequirements)
1238 {
1239 ExFreePool(DeviceNode->ResourceRequirements);
1240 }
1241
1242 if (DeviceNode->BootResources)
1243 {
1244 ExFreePool(DeviceNode->BootResources);
1245 }
1246
1247 ((PEXTENDED_DEVOBJ_EXTENSION)DeviceNode->PhysicalDeviceObject->DeviceObjectExtension)->DeviceNode = NULL;
1248 ExFreePoolWithTag(DeviceNode, TAG_IO_DEVNODE);
1249
1250 return STATUS_SUCCESS;
1251 }
1252
1253 NTSTATUS
1254 NTAPI
1255 IopSynchronousCall(IN PDEVICE_OBJECT DeviceObject,
1256 IN PIO_STACK_LOCATION IoStackLocation,
1257 OUT PVOID *Information)
1258 {
1259 PIRP Irp;
1260 PIO_STACK_LOCATION IrpStack;
1261 IO_STATUS_BLOCK IoStatusBlock;
1262 KEVENT Event;
1263 NTSTATUS Status;
1264 PDEVICE_OBJECT TopDeviceObject;
1265 PAGED_CODE();
1266
1267 /* Call the top of the device stack */
1268 TopDeviceObject = IoGetAttachedDeviceReference(DeviceObject);
1269
1270 /* Allocate an IRP */
1271 Irp = IoAllocateIrp(TopDeviceObject->StackSize, FALSE);
1272 if (!Irp) return STATUS_INSUFFICIENT_RESOURCES;
1273
1274 /* Initialize to failure */
1275 Irp->IoStatus.Status = IoStatusBlock.Status = STATUS_NOT_SUPPORTED;
1276 Irp->IoStatus.Information = IoStatusBlock.Information = 0;
1277
1278 /* Special case for IRP_MN_FILTER_RESOURCE_REQUIREMENTS */
1279 if (IoStackLocation->MinorFunction == IRP_MN_FILTER_RESOURCE_REQUIREMENTS)
1280 {
1281 /* Copy the resource requirements list into the IOSB */
1282 Irp->IoStatus.Information =
1283 IoStatusBlock.Information = (ULONG_PTR)IoStackLocation->Parameters.FilterResourceRequirements.IoResourceRequirementList;
1284 }
1285
1286 /* Initialize the event */
1287 KeInitializeEvent(&Event, SynchronizationEvent, FALSE);
1288
1289 /* Set them up */
1290 Irp->UserIosb = &IoStatusBlock;
1291 Irp->UserEvent = &Event;
1292
1293 /* Queue the IRP */
1294 Irp->Tail.Overlay.Thread = PsGetCurrentThread();
1295 IoQueueThreadIrp(Irp);
1296
1297 /* Copy-in the stack */
1298 IrpStack = IoGetNextIrpStackLocation(Irp);
1299 *IrpStack = *IoStackLocation;
1300
1301 /* Call the driver */
1302 Status = IoCallDriver(TopDeviceObject, Irp);
1303 if (Status == STATUS_PENDING)
1304 {
1305 /* Wait for it */
1306 KeWaitForSingleObject(&Event,
1307 Executive,
1308 KernelMode,
1309 FALSE,
1310 NULL);
1311 Status = IoStatusBlock.Status;
1312 }
1313
1314 /* Remove the reference */
1315 ObDereferenceObject(TopDeviceObject);
1316
1317 /* Return the information */
1318 *Information = (PVOID)IoStatusBlock.Information;
1319 return Status;
1320 }
1321
1322 NTSTATUS
1323 NTAPI
1324 IopInitiatePnpIrp(IN PDEVICE_OBJECT DeviceObject,
1325 IN OUT PIO_STATUS_BLOCK IoStatusBlock,
1326 IN UCHAR MinorFunction,
1327 IN PIO_STACK_LOCATION Stack OPTIONAL)
1328 {
1329 IO_STACK_LOCATION IoStackLocation;
1330
1331 /* Fill out the stack information */
1332 RtlZeroMemory(&IoStackLocation, sizeof(IO_STACK_LOCATION));
1333 IoStackLocation.MajorFunction = IRP_MJ_PNP;
1334 IoStackLocation.MinorFunction = MinorFunction;
1335 if (Stack)
1336 {
1337 /* Copy the rest */
1338 RtlCopyMemory(&IoStackLocation.Parameters,
1339 &Stack->Parameters,
1340 sizeof(Stack->Parameters));
1341 }
1342
1343 /* Do the PnP call */
1344 IoStatusBlock->Status = IopSynchronousCall(DeviceObject,
1345 &IoStackLocation,
1346 (PVOID)&IoStatusBlock->Information);
1347 return IoStatusBlock->Status;
1348 }
1349
1350 NTSTATUS
1351 IopTraverseDeviceTreeNode(PDEVICETREE_TRAVERSE_CONTEXT Context)
1352 {
1353 PDEVICE_NODE ParentDeviceNode;
1354 PDEVICE_NODE ChildDeviceNode;
1355 NTSTATUS Status;
1356
1357 /* Copy context data so we don't overwrite it in subsequent calls to this function */
1358 ParentDeviceNode = Context->DeviceNode;
1359
1360 /* Call the action routine */
1361 Status = (Context->Action)(ParentDeviceNode, Context->Context);
1362 if (!NT_SUCCESS(Status))
1363 {
1364 return Status;
1365 }
1366
1367 /* Traversal of all children nodes */
1368 for (ChildDeviceNode = ParentDeviceNode->Child;
1369 ChildDeviceNode != NULL;
1370 ChildDeviceNode = ChildDeviceNode->Sibling)
1371 {
1372 /* Pass the current device node to the action routine */
1373 Context->DeviceNode = ChildDeviceNode;
1374
1375 Status = IopTraverseDeviceTreeNode(Context);
1376 if (!NT_SUCCESS(Status))
1377 {
1378 return Status;
1379 }
1380 }
1381
1382 return Status;
1383 }
1384
1385
1386 NTSTATUS
1387 IopTraverseDeviceTree(PDEVICETREE_TRAVERSE_CONTEXT Context)
1388 {
1389 NTSTATUS Status;
1390
1391 DPRINT("Context 0x%p\n", Context);
1392
1393 DPRINT("IopTraverseDeviceTree(DeviceNode 0x%p FirstDeviceNode 0x%p Action %p Context 0x%p)\n",
1394 Context->DeviceNode, Context->FirstDeviceNode, Context->Action, Context->Context);
1395
1396 /* Start from the specified device node */
1397 Context->DeviceNode = Context->FirstDeviceNode;
1398
1399 /* Recursively traverse the device tree */
1400 Status = IopTraverseDeviceTreeNode(Context);
1401 if (Status == STATUS_UNSUCCESSFUL)
1402 {
1403 /* The action routine just wanted to terminate the traversal with status
1404 code STATUS_SUCCESS */
1405 Status = STATUS_SUCCESS;
1406 }
1407
1408 return Status;
1409 }
1410
1411
1412 /*
1413 * IopCreateDeviceKeyPath
1414 *
1415 * Creates a registry key
1416 *
1417 * Parameters
1418 * RegistryPath
1419 * Name of the key to be created.
1420 * Handle
1421 * Handle to the newly created key
1422 *
1423 * Remarks
1424 * This method can create nested trees, so parent of RegistryPath can
1425 * be not existant, and will be created if needed.
1426 */
1427 NTSTATUS
1428 NTAPI
1429 IopCreateDeviceKeyPath(IN PCUNICODE_STRING RegistryPath,
1430 IN ULONG CreateOptions,
1431 OUT PHANDLE Handle)
1432 {
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;
1438 USHORT Length;
1439 NTSTATUS Status;
1440
1441 /* Assume failure */
1442 *Handle = NULL;
1443
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;
1447
1448 /* Open root key for device instances */
1449 Status = IopOpenRegistryKeyEx(&hParent, NULL, &EnumU, KEY_CREATE_SUB_KEY);
1450 if (!NT_SUCCESS(Status))
1451 {
1452 DPRINT1("ZwOpenKey('%wZ') failed with status 0x%08lx\n", &EnumU, Status);
1453 return Status;
1454 }
1455
1456 Current = KeyName.Buffer = RegistryPath->Buffer;
1457 Last = &RegistryPath->Buffer[RegistryPath->Length / sizeof(WCHAR)];
1458
1459 /* Go up to the end of the string */
1460 while (Current <= Last)
1461 {
1462 if (Current != Last && *Current != '\\')
1463 {
1464 /* Not the end of the string and not a separator */
1465 Current++;
1466 continue;
1467 }
1468
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);
1473
1474 /* Open key */
1475 InitializeObjectAttributes(&ObjectAttributes,
1476 &KeyName,
1477 OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
1478 hParent,
1479 NULL);
1480 Status = ZwCreateKey(&hKey,
1481 Current == Last ? KEY_ALL_ACCESS : KEY_CREATE_SUB_KEY,
1482 &ObjectAttributes,
1483 0,
1484 NULL,
1485 CreateOptions,
1486 NULL);
1487
1488 /* Close parent key handle, we don't need it anymore */
1489 if (hParent)
1490 ZwClose(hParent);
1491
1492 /* Key opening/creating failed? */
1493 if (!NT_SUCCESS(Status))
1494 {
1495 DPRINT1("ZwCreateKey('%wZ') failed with status 0x%08lx\n", &KeyName, Status);
1496 return Status;
1497 }
1498
1499 /* Check if it is the end of the string */
1500 if (Current == Last)
1501 {
1502 /* Yes, return success */
1503 *Handle = hKey;
1504 return STATUS_SUCCESS;
1505 }
1506
1507 /* Start with this new parent key */
1508 hParent = hKey;
1509 Current++;
1510 KeyName.Buffer = (LPWSTR)Current;
1511 }
1512
1513 return STATUS_UNSUCCESSFUL;
1514 }
1515
1516 NTSTATUS
1517 IopSetDeviceInstanceData(HANDLE InstanceKey,
1518 PDEVICE_NODE DeviceNode)
1519 {
1520 OBJECT_ATTRIBUTES ObjectAttributes;
1521 UNICODE_STRING KeyName;
1522 HANDLE LogConfKey;
1523 ULONG ResCount;
1524 ULONG ResultLength;
1525 NTSTATUS Status;
1526 HANDLE ControlHandle;
1527
1528 DPRINT("IopSetDeviceInstanceData() called\n");
1529
1530 /* Create the 'LogConf' key */
1531 RtlInitUnicodeString(&KeyName, L"LogConf");
1532 InitializeObjectAttributes(&ObjectAttributes,
1533 &KeyName,
1534 OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
1535 InstanceKey,
1536 NULL);
1537 Status = ZwCreateKey(&LogConfKey,
1538 KEY_ALL_ACCESS,
1539 &ObjectAttributes,
1540 0,
1541 NULL,
1542 REG_OPTION_VOLATILE,
1543 NULL);
1544 if (NT_SUCCESS(Status))
1545 {
1546 /* Set 'BootConfig' value */
1547 if (DeviceNode->BootResources != NULL)
1548 {
1549 ResCount = DeviceNode->BootResources->Count;
1550 if (ResCount != 0)
1551 {
1552 RtlInitUnicodeString(&KeyName, L"BootConfig");
1553 Status = ZwSetValueKey(LogConfKey,
1554 &KeyName,
1555 0,
1556 REG_RESOURCE_LIST,
1557 DeviceNode->BootResources,
1558 PnpDetermineResourceListSize(DeviceNode->BootResources));
1559 }
1560 }
1561
1562 /* Set 'BasicConfigVector' value */
1563 if (DeviceNode->ResourceRequirements != NULL &&
1564 DeviceNode->ResourceRequirements->ListSize != 0)
1565 {
1566 RtlInitUnicodeString(&KeyName, L"BasicConfigVector");
1567 Status = ZwSetValueKey(LogConfKey,
1568 &KeyName,
1569 0,
1570 REG_RESOURCE_REQUIREMENTS_LIST,
1571 DeviceNode->ResourceRequirements,
1572 DeviceNode->ResourceRequirements->ListSize);
1573 }
1574
1575 ZwClose(LogConfKey);
1576 }
1577
1578 /* Set the 'ConfigFlags' value */
1579 RtlInitUnicodeString(&KeyName, L"ConfigFlags");
1580 Status = ZwQueryValueKey(InstanceKey,
1581 &KeyName,
1582 KeyValueBasicInformation,
1583 NULL,
1584 0,
1585 &ResultLength);
1586 if (Status == STATUS_OBJECT_NAME_NOT_FOUND)
1587 {
1588 /* Write the default value */
1589 ULONG DefaultConfigFlags = 0;
1590 Status = ZwSetValueKey(InstanceKey,
1591 &KeyName,
1592 0,
1593 REG_DWORD,
1594 &DefaultConfigFlags,
1595 sizeof(DefaultConfigFlags));
1596 }
1597
1598 /* Create the 'Control' key */
1599 RtlInitUnicodeString(&KeyName, L"Control");
1600 InitializeObjectAttributes(&ObjectAttributes,
1601 &KeyName,
1602 OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
1603 InstanceKey,
1604 NULL);
1605 Status = ZwCreateKey(&ControlHandle, 0, &ObjectAttributes, 0, NULL, REG_OPTION_VOLATILE, NULL);
1606
1607 if (NT_SUCCESS(Status))
1608 ZwClose(ControlHandle);
1609
1610 DPRINT("IopSetDeviceInstanceData() done\n");
1611
1612 return Status;
1613 }
1614
1615 /*
1616 * IopGetParentIdPrefix
1617 *
1618 * Retrieve (or create) a string which identifies a device.
1619 *
1620 * Parameters
1621 * DeviceNode
1622 * Pointer to device node.
1623 * ParentIdPrefix
1624 * Pointer to the string where is returned the parent node identifier
1625 *
1626 * Remarks
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
1630 * needed.
1631 */
1632
1633 NTSTATUS
1634 IopGetParentIdPrefix(PDEVICE_NODE DeviceNode,
1635 PUNICODE_STRING ParentIdPrefix)
1636 {
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;
1642 HANDLE hKey = NULL;
1643 ULONG crc32;
1644 NTSTATUS Status;
1645
1646 /* HACK: As long as some devices have a NULL device
1647 * instance path, the following test is required :(
1648 */
1649 if (DeviceNode->Parent->InstancePath.Length == 0)
1650 {
1651 DPRINT1("Parent of %wZ has NULL Instance path, please report!\n",
1652 &DeviceNode->InstancePath);
1653 return STATUS_UNSUCCESSFUL;
1654 }
1655
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)
1660 {
1661 return STATUS_INSUFFICIENT_RESOURCES;
1662 }
1663
1664 KeyName.Buffer = ExAllocatePool(PagedPool, (49 * sizeof(WCHAR)) + DeviceNode->Parent->InstancePath.Length);
1665 if (!KeyName.Buffer)
1666 {
1667 Status = STATUS_INSUFFICIENT_RESOURCES;
1668 goto cleanup;
1669 }
1670 KeyName.Length = 0;
1671 KeyName.MaximumLength = (49 * sizeof(WCHAR)) + DeviceNode->Parent->InstancePath.Length;
1672
1673 RtlAppendUnicodeToString(&KeyName, L"\\Registry\\Machine\\System\\CurrentControlSet\\Enum\\");
1674 RtlAppendUnicodeStringToString(&KeyName, &DeviceNode->Parent->InstancePath);
1675
1676 Status = IopOpenRegistryKeyEx(&hKey, NULL, &KeyName, KEY_QUERY_VALUE | KEY_SET_VALUE);
1677 if (!NT_SUCCESS(Status))
1678 goto cleanup;
1679 RtlInitUnicodeString(&ValueName, L"ParentIdPrefix");
1680 Status = ZwQueryValueKey(
1681 hKey, &ValueName,
1682 KeyValuePartialInformation, ParentIdPrefixInformation,
1683 KeyNameBufferLength, &KeyNameBufferLength);
1684 if (NT_SUCCESS(Status))
1685 {
1686 if (ParentIdPrefixInformation->Type != REG_SZ)
1687 Status = STATUS_UNSUCCESSFUL;
1688 else
1689 {
1690 KeyValue.Length = KeyValue.MaximumLength = (USHORT)ParentIdPrefixInformation->DataLength;
1691 KeyValue.Buffer = (PWSTR)ParentIdPrefixInformation->Data;
1692 }
1693 goto cleanup;
1694 }
1695 if (Status != STATUS_OBJECT_NAME_NOT_FOUND)
1696 {
1697 KeyValue.Length = KeyValue.MaximumLength = (USHORT)ParentIdPrefixInformation->DataLength;
1698 KeyValue.Buffer = (PWSTR)ParentIdPrefixInformation->Data;
1699 goto cleanup;
1700 }
1701
1702 /* 2. Create the ParentIdPrefix value */
1703 crc32 = RtlComputeCrc32(0,
1704 (PUCHAR)DeviceNode->Parent->InstancePath.Buffer,
1705 DeviceNode->Parent->InstancePath.Length);
1706
1707 swprintf((PWSTR)ParentIdPrefixInformation->Data, L"%lx&%lx", DeviceNode->Parent->Level, crc32);
1708 RtlInitUnicodeString(&KeyValue, (PWSTR)ParentIdPrefixInformation->Data);
1709
1710 /* 3. Try to write the ParentIdPrefix to registry */
1711 Status = ZwSetValueKey(hKey,
1712 &ValueName,
1713 0,
1714 REG_SZ,
1715 (PVOID)KeyValue.Buffer,
1716 ((ULONG)wcslen(KeyValue.Buffer) + 1) * sizeof(WCHAR));
1717
1718 cleanup:
1719 if (NT_SUCCESS(Status))
1720 {
1721 /* Duplicate the string to return it */
1722 Status = RtlDuplicateUnicodeString(RTL_DUPLICATE_UNICODE_STRING_NULL_TERMINATE, &KeyValue, ParentIdPrefix);
1723 }
1724 ExFreePool(ParentIdPrefixInformation);
1725 RtlFreeUnicodeString(&KeyName);
1726 if (hKey != NULL)
1727 ZwClose(hKey);
1728 return Status;
1729 }
1730
1731 NTSTATUS
1732 IopQueryHardwareIds(PDEVICE_NODE DeviceNode,
1733 HANDLE InstanceKey)
1734 {
1735 IO_STACK_LOCATION Stack;
1736 IO_STATUS_BLOCK IoStatusBlock;
1737 PWSTR Ptr;
1738 UNICODE_STRING ValueName;
1739 NTSTATUS Status;
1740 ULONG Length, TotalLength;
1741
1742 DPRINT("Sending IRP_MN_QUERY_ID.BusQueryHardwareIDs to device stack\n");
1743
1744 RtlZeroMemory(&Stack, sizeof(Stack));
1745 Stack.Parameters.QueryId.IdType = BusQueryHardwareIDs;
1746 Status = IopInitiatePnpIrp(DeviceNode->PhysicalDeviceObject,
1747 &IoStatusBlock,
1748 IRP_MN_QUERY_ID,
1749 &Stack);
1750 if (NT_SUCCESS(Status))
1751 {
1752 /*
1753 * FIXME: Check for valid characters, if there is invalid characters
1754 * then bugcheck.
1755 */
1756 TotalLength = 0;
1757 Ptr = (PWSTR)IoStatusBlock.Information;
1758 DPRINT("Hardware IDs:\n");
1759 while (*Ptr)
1760 {
1761 DPRINT(" %S\n", Ptr);
1762 Length = (ULONG)wcslen(Ptr) + 1;
1763
1764 Ptr += Length;
1765 TotalLength += Length;
1766 }
1767 DPRINT("TotalLength: %hu\n", TotalLength);
1768 DPRINT("\n");
1769
1770 RtlInitUnicodeString(&ValueName, L"HardwareID");
1771 Status = ZwSetValueKey(InstanceKey,
1772 &ValueName,
1773 0,
1774 REG_MULTI_SZ,
1775 (PVOID)IoStatusBlock.Information,
1776 (TotalLength + 1) * sizeof(WCHAR));
1777 if (!NT_SUCCESS(Status))
1778 {
1779 DPRINT1("ZwSetValueKey() failed (Status %lx)\n", Status);
1780 }
1781 }
1782 else
1783 {
1784 DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
1785 }
1786
1787 return Status;
1788 }
1789
1790 NTSTATUS
1791 IopQueryCompatibleIds(PDEVICE_NODE DeviceNode,
1792 HANDLE InstanceKey)
1793 {
1794 IO_STACK_LOCATION Stack;
1795 IO_STATUS_BLOCK IoStatusBlock;
1796 PWSTR Ptr;
1797 UNICODE_STRING ValueName;
1798 NTSTATUS Status;
1799 ULONG Length, TotalLength;
1800
1801 DPRINT("Sending IRP_MN_QUERY_ID.BusQueryCompatibleIDs to device stack\n");
1802
1803 RtlZeroMemory(&Stack, sizeof(Stack));
1804 Stack.Parameters.QueryId.IdType = BusQueryCompatibleIDs;
1805 Status = IopInitiatePnpIrp(
1806 DeviceNode->PhysicalDeviceObject,
1807 &IoStatusBlock,
1808 IRP_MN_QUERY_ID,
1809 &Stack);
1810 if (NT_SUCCESS(Status) && IoStatusBlock.Information)
1811 {
1812 /*
1813 * FIXME: Check for valid characters, if there is invalid characters
1814 * then bugcheck.
1815 */
1816 TotalLength = 0;
1817 Ptr = (PWSTR)IoStatusBlock.Information;
1818 DPRINT("Compatible IDs:\n");
1819 while (*Ptr)
1820 {
1821 DPRINT(" %S\n", Ptr);
1822 Length = (ULONG)wcslen(Ptr) + 1;
1823
1824 Ptr += Length;
1825 TotalLength += Length;
1826 }
1827 DPRINT("TotalLength: %hu\n", TotalLength);
1828 DPRINT("\n");
1829
1830 RtlInitUnicodeString(&ValueName, L"CompatibleIDs");
1831 Status = ZwSetValueKey(InstanceKey,
1832 &ValueName,
1833 0,
1834 REG_MULTI_SZ,
1835 (PVOID)IoStatusBlock.Information,
1836 (TotalLength + 1) * sizeof(WCHAR));
1837 if (!NT_SUCCESS(Status))
1838 {
1839 DPRINT1("ZwSetValueKey() failed (Status %lx) or no Compatible ID returned\n", Status);
1840 }
1841 }
1842 else
1843 {
1844 DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
1845 }
1846
1847 return Status;
1848 }
1849
1850
1851 /*
1852 * IopActionInterrogateDeviceStack
1853 *
1854 * Retrieve information for all (direct) child nodes of a parent node.
1855 *
1856 * Parameters
1857 * DeviceNode
1858 * Pointer to device node.
1859 * Context
1860 * Pointer to parent node to retrieve child node information for.
1861 *
1862 * Remarks
1863 * Any errors that occur are logged instead so that all child services have a chance
1864 * of being interrogated.
1865 */
1866
1867 NTSTATUS
1868 IopActionInterrogateDeviceStack(PDEVICE_NODE DeviceNode,
1869 PVOID Context)
1870 {
1871 IO_STATUS_BLOCK IoStatusBlock;
1872 PDEVICE_NODE ParentDeviceNode;
1873 WCHAR InstancePath[MAX_PATH];
1874 IO_STACK_LOCATION Stack;
1875 NTSTATUS Status;
1876 ULONG RequiredLength;
1877 LCID LocaleId;
1878 HANDLE InstanceKey = NULL;
1879 UNICODE_STRING ValueName;
1880 UNICODE_STRING ParentIdPrefix = { 0, 0, NULL };
1881 UNICODE_STRING InstancePathU;
1882 DEVICE_CAPABILITIES DeviceCapabilities;
1883 PDEVICE_OBJECT OldDeviceObject;
1884
1885 DPRINT("IopActionInterrogateDeviceStack(%p, %p)\n", DeviceNode, Context);
1886 DPRINT("PDO 0x%p\n", DeviceNode->PhysicalDeviceObject);
1887
1888 ParentDeviceNode = (PDEVICE_NODE)Context;
1889
1890 /*
1891 * We are called for the parent too, but we don't need to do special
1892 * handling for this node
1893 */
1894 if (DeviceNode == ParentDeviceNode)
1895 {
1896 DPRINT("Success\n");
1897 return STATUS_SUCCESS;
1898 }
1899
1900 /*
1901 * Make sure this device node is a direct child of the parent device node
1902 * that is given as an argument
1903 */
1904 if (DeviceNode->Parent != ParentDeviceNode)
1905 {
1906 DPRINT("Skipping 2+ level child\n");
1907 return STATUS_SUCCESS;
1908 }
1909
1910 /* Skip processing if it was already completed before */
1911 if (DeviceNode->Flags & DNF_PROCESSED)
1912 {
1913 /* Nothing to do */
1914 return STATUS_SUCCESS;
1915 }
1916
1917 /* Get Locale ID */
1918 Status = ZwQueryDefaultLocale(FALSE, &LocaleId);
1919 if (!NT_SUCCESS(Status))
1920 {
1921 DPRINT1("ZwQueryDefaultLocale() failed with status 0x%lx\n", Status);
1922 return Status;
1923 }
1924
1925 /*
1926 * FIXME: For critical errors, cleanup and disable device, but always
1927 * return STATUS_SUCCESS.
1928 */
1929
1930 DPRINT("Sending IRP_MN_QUERY_ID.BusQueryDeviceID to device stack\n");
1931
1932 Stack.Parameters.QueryId.IdType = BusQueryDeviceID;
1933 Status = IopInitiatePnpIrp(DeviceNode->PhysicalDeviceObject,
1934 &IoStatusBlock,
1935 IRP_MN_QUERY_ID,
1936 &Stack);
1937 if (NT_SUCCESS(Status))
1938 {
1939 /* Copy the device id string */
1940 wcscpy(InstancePath, (PWSTR)IoStatusBlock.Information);
1941
1942 /*
1943 * FIXME: Check for valid characters, if there is invalid characters
1944 * then bugcheck.
1945 */
1946 }
1947 else
1948 {
1949 DPRINT1("IopInitiatePnpIrp() failed (Status %x)\n", Status);
1950
1951 /* We have to return success otherwise we abort the traverse operation */
1952 return STATUS_SUCCESS;
1953 }
1954
1955 DPRINT("Sending IRP_MN_QUERY_CAPABILITIES to device stack (after enumeration)\n");
1956
1957 Status = IopQueryDeviceCapabilities(DeviceNode, &DeviceCapabilities);
1958 if (!NT_SUCCESS(Status))
1959 {
1960 DPRINT1("IopInitiatePnpIrp() failed (Status 0x%08lx)\n", Status);
1961
1962 /* We have to return success otherwise we abort the traverse operation */
1963 return STATUS_SUCCESS;
1964 }
1965
1966 /* This bit is only check after enumeration */
1967 if (DeviceCapabilities.HardwareDisabled)
1968 {
1969 /* FIXME: Cleanup device */
1970 DeviceNode->Flags |= DNF_DISABLED;
1971 return STATUS_SUCCESS;
1972 }
1973 else
1974 {
1975 DeviceNode->Flags &= ~DNF_DISABLED;
1976 }
1977
1978 if (!DeviceCapabilities.UniqueID)
1979 {
1980 /* Device has not a unique ID. We need to prepend parent bus unique identifier */
1981 DPRINT("Instance ID is not unique\n");
1982 Status = IopGetParentIdPrefix(DeviceNode, &ParentIdPrefix);
1983 if (!NT_SUCCESS(Status))
1984 {
1985 DPRINT1("IopGetParentIdPrefix() failed (Status 0x%08lx)\n", Status);
1986
1987 /* We have to return success otherwise we abort the traverse operation */
1988 return STATUS_SUCCESS;
1989 }
1990 }
1991
1992 DPRINT("Sending IRP_MN_QUERY_ID.BusQueryInstanceID to device stack\n");
1993
1994 Stack.Parameters.QueryId.IdType = BusQueryInstanceID;
1995 Status = IopInitiatePnpIrp(DeviceNode->PhysicalDeviceObject,
1996 &IoStatusBlock,
1997 IRP_MN_QUERY_ID,
1998 &Stack);
1999 if (NT_SUCCESS(Status))
2000 {
2001 /* Append the instance id string */
2002 wcscat(InstancePath, L"\\");
2003 if (ParentIdPrefix.Length > 0)
2004 {
2005 /* Add information from parent bus device to InstancePath */
2006 wcscat(InstancePath, ParentIdPrefix.Buffer);
2007 if (IoStatusBlock.Information && *(PWSTR)IoStatusBlock.Information)
2008 {
2009 wcscat(InstancePath, L"&");
2010 }
2011 }
2012 if (IoStatusBlock.Information)
2013 {
2014 wcscat(InstancePath, (PWSTR)IoStatusBlock.Information);
2015 }
2016
2017 /*
2018 * FIXME: Check for valid characters, if there is invalid characters
2019 * then bugcheck
2020 */
2021 }
2022 else
2023 {
2024 DPRINT("IopInitiatePnpIrp() failed (Status %x)\n", Status);
2025 }
2026 RtlFreeUnicodeString(&ParentIdPrefix);
2027
2028 if (!RtlCreateUnicodeString(&InstancePathU, InstancePath))
2029 {
2030 DPRINT("No resources\n");
2031 /* FIXME: Cleanup and disable device */
2032 }
2033
2034 /* Verify that this is not a duplicate */
2035 OldDeviceObject = IopGetDeviceObjectFromDeviceInstance(&InstancePathU);
2036 if (OldDeviceObject != NULL)
2037 {
2038 PDEVICE_NODE OldDeviceNode = IopGetDeviceNode(OldDeviceObject);
2039
2040 DPRINT1("Duplicate device instance '%wZ'\n", &InstancePathU);
2041 DPRINT1("Current instance parent: '%wZ'\n", &DeviceNode->Parent->InstancePath);
2042 DPRINT1("Old instance parent: '%wZ'\n", &OldDeviceNode->Parent->InstancePath);
2043
2044 KeBugCheckEx(PNP_DETECTED_FATAL_ERROR,
2045 0x01,
2046 (ULONG_PTR)DeviceNode->PhysicalDeviceObject,
2047 (ULONG_PTR)OldDeviceObject,
2048 0);
2049 }
2050
2051 DeviceNode->InstancePath = InstancePathU;
2052
2053 DPRINT("InstancePath is %S\n", DeviceNode->InstancePath.Buffer);
2054
2055 /*
2056 * Create registry key for the instance id, if it doesn't exist yet
2057 */
2058 Status = IopCreateDeviceKeyPath(&DeviceNode->InstancePath, 0, &InstanceKey);
2059 if (!NT_SUCCESS(Status))
2060 {
2061 DPRINT1("Failed to create the instance key! (Status %lx)\n", Status);
2062
2063 /* We have to return success otherwise we abort the traverse operation */
2064 return STATUS_SUCCESS;
2065 }
2066
2067 IopQueryHardwareIds(DeviceNode, InstanceKey);
2068
2069 IopQueryCompatibleIds(DeviceNode, InstanceKey);
2070
2071 DPRINT("Sending IRP_MN_QUERY_DEVICE_TEXT.DeviceTextDescription to device stack\n");
2072
2073 Stack.Parameters.QueryDeviceText.DeviceTextType = DeviceTextDescription;
2074 Stack.Parameters.QueryDeviceText.LocaleId = LocaleId;
2075 Status = IopInitiatePnpIrp(DeviceNode->PhysicalDeviceObject,
2076 &IoStatusBlock,
2077 IRP_MN_QUERY_DEVICE_TEXT,
2078 &Stack);
2079 /* This key is mandatory, so even if the Irp fails, we still write it */
2080 RtlInitUnicodeString(&ValueName, L"DeviceDesc");
2081 if (ZwQueryValueKey(InstanceKey, &ValueName, KeyValueBasicInformation, NULL, 0, &RequiredLength) == STATUS_OBJECT_NAME_NOT_FOUND)
2082 {
2083 if (NT_SUCCESS(Status) &&
2084 IoStatusBlock.Information &&
2085 (*(PWSTR)IoStatusBlock.Information != 0))
2086 {
2087 /* This key is overriden when a driver is installed. Don't write the
2088 * new description if another one already exists */
2089 Status = ZwSetValueKey(InstanceKey,
2090 &ValueName,
2091 0,
2092 REG_SZ,
2093 (PVOID)IoStatusBlock.Information,
2094 ((ULONG)wcslen((PWSTR)IoStatusBlock.Information) + 1) * sizeof(WCHAR));
2095 }
2096 else
2097 {
2098 UNICODE_STRING DeviceDesc = RTL_CONSTANT_STRING(L"Unknown device");
2099 DPRINT("Driver didn't return DeviceDesc (Status 0x%08lx), so place unknown device there\n", Status);
2100
2101 Status = ZwSetValueKey(InstanceKey,
2102 &ValueName,
2103 0,
2104 REG_SZ,
2105 DeviceDesc.Buffer,
2106 DeviceDesc.MaximumLength);
2107 if (!NT_SUCCESS(Status))
2108 {
2109 DPRINT1("ZwSetValueKey() failed (Status 0x%lx)\n", Status);
2110 }
2111
2112 }
2113 }
2114
2115 DPRINT("Sending IRP_MN_QUERY_DEVICE_TEXT.DeviceTextLocation to device stack\n");
2116
2117 Stack.Parameters.QueryDeviceText.DeviceTextType = DeviceTextLocationInformation;
2118 Stack.Parameters.QueryDeviceText.LocaleId = LocaleId;
2119 Status = IopInitiatePnpIrp(DeviceNode->PhysicalDeviceObject,
2120 &IoStatusBlock,
2121 IRP_MN_QUERY_DEVICE_TEXT,
2122 &Stack);
2123 if (NT_SUCCESS(Status) && IoStatusBlock.Information)
2124 {
2125 DPRINT("LocationInformation: %S\n", (PWSTR)IoStatusBlock.Information);
2126 RtlInitUnicodeString(&ValueName, L"LocationInformation");
2127 Status = ZwSetValueKey(InstanceKey,
2128 &ValueName,
2129 0,
2130 REG_SZ,
2131 (PVOID)IoStatusBlock.Information,
2132 ((ULONG)wcslen((PWSTR)IoStatusBlock.Information) + 1) * sizeof(WCHAR));
2133 if (!NT_SUCCESS(Status))
2134 {
2135 DPRINT1("ZwSetValueKey() failed (Status %lx)\n", Status);
2136 }
2137 }
2138 else
2139 {
2140 DPRINT("IopInitiatePnpIrp() failed (Status %x) or IoStatusBlock.Information=NULL\n", Status);
2141 }
2142
2143 DPRINT("Sending IRP_MN_QUERY_BUS_INFORMATION to device stack\n");
2144
2145 Status = IopInitiatePnpIrp(DeviceNode->PhysicalDeviceObject,
2146 &IoStatusBlock,
2147 IRP_MN_QUERY_BUS_INFORMATION,
2148 NULL);
2149 if (NT_SUCCESS(Status) && IoStatusBlock.Information)
2150 {
2151 PPNP_BUS_INFORMATION BusInformation = (PPNP_BUS_INFORMATION)IoStatusBlock.Information;
2152
2153 DeviceNode->ChildBusNumber = BusInformation->BusNumber;
2154 DeviceNode->ChildInterfaceType = BusInformation->LegacyBusType;
2155 DeviceNode->ChildBusTypeIndex = IopGetBusTypeGuidIndex(&BusInformation->BusTypeGuid);
2156 ExFreePool(BusInformation);
2157 }
2158 else
2159 {
2160 DPRINT("IopInitiatePnpIrp() failed (Status %x) or IoStatusBlock.Information=NULL\n", Status);
2161
2162 DeviceNode->ChildBusNumber = 0xFFFFFFF0;
2163 DeviceNode->ChildInterfaceType = InterfaceTypeUndefined;
2164 DeviceNode->ChildBusTypeIndex = -1;
2165 }
2166
2167 DPRINT("Sending IRP_MN_QUERY_RESOURCES to device stack\n");
2168
2169 Status = IopInitiatePnpIrp(DeviceNode->PhysicalDeviceObject,
2170 &IoStatusBlock,
2171 IRP_MN_QUERY_RESOURCES,
2172 NULL);
2173 if (NT_SUCCESS(Status) && IoStatusBlock.Information)
2174 {
2175 DeviceNode->BootResources = (PCM_RESOURCE_LIST)IoStatusBlock.Information;
2176 IopDeviceNodeSetFlag(DeviceNode, DNF_HAS_BOOT_CONFIG);
2177 }
2178 else
2179 {
2180 DPRINT("IopInitiatePnpIrp() failed (Status %x) or IoStatusBlock.Information=NULL\n", Status);
2181 DeviceNode->BootResources = NULL;
2182 }
2183
2184 DPRINT("Sending IRP_MN_QUERY_RESOURCE_REQUIREMENTS to device stack\n");
2185
2186 Status = IopInitiatePnpIrp(DeviceNode->PhysicalDeviceObject,
2187 &IoStatusBlock,
2188 IRP_MN_QUERY_RESOURCE_REQUIREMENTS,
2189 NULL);
2190 if (NT_SUCCESS(Status))
2191 {
2192 DeviceNode->ResourceRequirements = (PIO_RESOURCE_REQUIREMENTS_LIST)IoStatusBlock.Information;
2193 }
2194 else
2195 {
2196 DPRINT("IopInitiatePnpIrp() failed (Status %08lx)\n", Status);
2197 DeviceNode->ResourceRequirements = NULL;
2198 }
2199
2200 if (InstanceKey != NULL)
2201 {
2202 IopSetDeviceInstanceData(InstanceKey, DeviceNode);
2203 }
2204
2205 ZwClose(InstanceKey);
2206
2207 IopDeviceNodeSetFlag(DeviceNode, DNF_PROCESSED);
2208
2209 if (!IopDeviceNodeHasFlag(DeviceNode, DNF_LEGACY_DRIVER))
2210 {
2211 /* Report the device to the user-mode pnp manager */
2212 IopQueueTargetDeviceEvent(&GUID_DEVICE_ENUMERATED,
2213 &DeviceNode->InstancePath);
2214 }
2215
2216 return STATUS_SUCCESS;
2217 }
2218
2219 static
2220 VOID
2221 IopHandleDeviceRemoval(
2222 IN PDEVICE_NODE DeviceNode,
2223 IN PDEVICE_RELATIONS DeviceRelations)
2224 {
2225 PDEVICE_NODE Child = DeviceNode->Child, NextChild;
2226 ULONG i;
2227 BOOLEAN Found;
2228
2229 if (DeviceNode == IopRootDeviceNode)
2230 return;
2231
2232 while (Child != NULL)
2233 {
2234 NextChild = Child->Sibling;
2235 Found = FALSE;
2236
2237 for (i = 0; DeviceRelations && i < DeviceRelations->Count; i++)
2238 {
2239 if (IopGetDeviceNode(DeviceRelations->Objects[i]) == Child)
2240 {
2241 Found = TRUE;
2242 break;
2243 }
2244 }
2245
2246 if (!Found && !(Child->Flags & DNF_WILL_BE_REMOVED))
2247 {
2248 /* Send removal IRPs to all of its children */
2249 IopPrepareDeviceForRemoval(Child->PhysicalDeviceObject, TRUE);
2250
2251 /* Send the surprise removal IRP */
2252 IopSendSurpriseRemoval(Child->PhysicalDeviceObject);
2253
2254 /* Tell the user-mode PnP manager that a device was removed */
2255 IopQueueTargetDeviceEvent(&GUID_DEVICE_SURPRISE_REMOVAL,
2256 &Child->InstancePath);
2257
2258 /* Send the remove device IRP */
2259 IopSendRemoveDevice(Child->PhysicalDeviceObject);
2260 }
2261
2262 Child = NextChild;
2263 }
2264 }
2265
2266 NTSTATUS
2267 IopEnumerateDevice(
2268 IN PDEVICE_OBJECT DeviceObject)
2269 {
2270 PDEVICE_NODE DeviceNode = IopGetDeviceNode(DeviceObject);
2271 DEVICETREE_TRAVERSE_CONTEXT Context;
2272 PDEVICE_RELATIONS DeviceRelations;
2273 PDEVICE_OBJECT ChildDeviceObject;
2274 IO_STATUS_BLOCK IoStatusBlock;
2275 PDEVICE_NODE ChildDeviceNode;
2276 IO_STACK_LOCATION Stack;
2277 NTSTATUS Status;
2278 ULONG i;
2279
2280 DPRINT("DeviceObject 0x%p\n", DeviceObject);
2281
2282 if (DeviceNode->Flags & DNF_NEED_ENUMERATION_ONLY)
2283 {
2284 DeviceNode->Flags &= ~DNF_NEED_ENUMERATION_ONLY;
2285
2286 DPRINT("Sending GUID_DEVICE_ARRIVAL\n");
2287 IopQueueTargetDeviceEvent(&GUID_DEVICE_ARRIVAL,
2288 &DeviceNode->InstancePath);
2289 }
2290
2291 DPRINT("Sending IRP_MN_QUERY_DEVICE_RELATIONS to device stack\n");
2292
2293 Stack.Parameters.QueryDeviceRelations.Type = BusRelations;
2294
2295 Status = IopInitiatePnpIrp(
2296 DeviceObject,
2297 &IoStatusBlock,
2298 IRP_MN_QUERY_DEVICE_RELATIONS,
2299 &Stack);
2300 if (!NT_SUCCESS(Status) || Status == STATUS_PENDING)
2301 {
2302 DPRINT("IopInitiatePnpIrp() failed with status 0x%08lx\n", Status);
2303 return Status;
2304 }
2305
2306 DeviceRelations = (PDEVICE_RELATIONS)IoStatusBlock.Information;
2307
2308 /*
2309 * Send removal IRPs for devices that have disappeared
2310 * NOTE: This code handles the case where no relations are specified
2311 */
2312 IopHandleDeviceRemoval(DeviceNode, DeviceRelations);
2313
2314 /* Now we bail if nothing was returned */
2315 if (!DeviceRelations)
2316 {
2317 /* We're all done */
2318 DPRINT("No PDOs\n");
2319 return STATUS_SUCCESS;
2320 }
2321
2322 DPRINT("Got %u PDOs\n", DeviceRelations->Count);
2323
2324 /*
2325 * Create device nodes for all discovered devices
2326 */
2327 for (i = 0; i < DeviceRelations->Count; i++)
2328 {
2329 ChildDeviceObject = DeviceRelations->Objects[i];
2330 ASSERT((ChildDeviceObject->Flags & DO_DEVICE_INITIALIZING) == 0);
2331
2332 ChildDeviceNode = IopGetDeviceNode(ChildDeviceObject);
2333 if (!ChildDeviceNode)
2334 {
2335 /* One doesn't exist, create it */
2336 Status = IopCreateDeviceNode(
2337 DeviceNode,
2338 ChildDeviceObject,
2339 NULL,
2340 &ChildDeviceNode);
2341 if (NT_SUCCESS(Status))
2342 {
2343 /* Mark the node as enumerated */
2344 ChildDeviceNode->Flags |= DNF_ENUMERATED;
2345
2346 /* Mark the DO as bus enumerated */
2347 ChildDeviceObject->Flags |= DO_BUS_ENUMERATED_DEVICE;
2348 }
2349 else
2350 {
2351 /* Ignore this DO */
2352 DPRINT1("IopCreateDeviceNode() failed with status 0x%08x. Skipping PDO %u\n", Status, i);
2353 ObDereferenceObject(ChildDeviceObject);
2354 }
2355 }
2356 else
2357 {
2358 /* Mark it as enumerated */
2359 ChildDeviceNode->Flags |= DNF_ENUMERATED;
2360 ObDereferenceObject(ChildDeviceObject);
2361 }
2362 }
2363 ExFreePool(DeviceRelations);
2364
2365 /*
2366 * Retrieve information about all discovered children from the bus driver
2367 */
2368 IopInitDeviceTreeTraverseContext(
2369 &Context,
2370 DeviceNode,
2371 IopActionInterrogateDeviceStack,
2372 DeviceNode);
2373
2374 Status = IopTraverseDeviceTree(&Context);
2375 if (!NT_SUCCESS(Status))
2376 {
2377 DPRINT("IopTraverseDeviceTree() failed with status 0x%08lx\n", Status);
2378 return Status;
2379 }
2380
2381 /*
2382 * Retrieve configuration from the registry for discovered children
2383 */
2384 IopInitDeviceTreeTraverseContext(
2385 &Context,
2386 DeviceNode,
2387 IopActionConfigureChildServices,
2388 DeviceNode);
2389
2390 Status = IopTraverseDeviceTree(&Context);
2391 if (!NT_SUCCESS(Status))
2392 {
2393 DPRINT("IopTraverseDeviceTree() failed with status 0x%08lx\n", Status);
2394 return Status;
2395 }
2396
2397 /*
2398 * Initialize services for discovered children.
2399 */
2400 Status = IopInitializePnpServices(DeviceNode);
2401 if (!NT_SUCCESS(Status))
2402 {
2403 DPRINT("IopInitializePnpServices() failed with status 0x%08lx\n", Status);
2404 return Status;
2405 }
2406
2407 DPRINT("IopEnumerateDevice() finished\n");
2408 return STATUS_SUCCESS;
2409 }
2410
2411
2412 /*
2413 * IopActionConfigureChildServices
2414 *
2415 * Retrieve configuration for all (direct) child nodes of a parent node.
2416 *
2417 * Parameters
2418 * DeviceNode
2419 * Pointer to device node.
2420 * Context
2421 * Pointer to parent node to retrieve child node configuration for.
2422 *
2423 * Remarks
2424 * Any errors that occur are logged instead so that all child services have a chance of beeing
2425 * configured.
2426 */
2427
2428 NTSTATUS
2429 IopActionConfigureChildServices(PDEVICE_NODE DeviceNode,
2430 PVOID Context)
2431 {
2432 RTL_QUERY_REGISTRY_TABLE QueryTable[3];
2433 PDEVICE_NODE ParentDeviceNode;
2434 PUNICODE_STRING Service;
2435 UNICODE_STRING ClassGUID;
2436 NTSTATUS Status;
2437 DEVICE_CAPABILITIES DeviceCaps;
2438
2439 DPRINT("IopActionConfigureChildServices(%p, %p)\n", DeviceNode, Context);
2440
2441 ParentDeviceNode = (PDEVICE_NODE)Context;
2442
2443 /*
2444 * We are called for the parent too, but we don't need to do special
2445 * handling for this node
2446 */
2447 if (DeviceNode == ParentDeviceNode)
2448 {
2449 DPRINT("Success\n");
2450 return STATUS_SUCCESS;
2451 }
2452
2453 /*
2454 * Make sure this device node is a direct child of the parent device node
2455 * that is given as an argument
2456 */
2457
2458 if (DeviceNode->Parent != ParentDeviceNode)
2459 {
2460 DPRINT("Skipping 2+ level child\n");
2461 return STATUS_SUCCESS;
2462 }
2463
2464 if (!(DeviceNode->Flags & DNF_PROCESSED))
2465 {
2466 DPRINT1("Child not ready to be configured\n");
2467 return STATUS_SUCCESS;
2468 }
2469
2470 if (!(DeviceNode->Flags & (DNF_DISABLED | DNF_STARTED | DNF_ADDED)))
2471 {
2472 WCHAR RegKeyBuffer[MAX_PATH];
2473 UNICODE_STRING RegKey;
2474
2475 /* Install the service for this if it's in the CDDB */
2476 IopInstallCriticalDevice(DeviceNode);
2477
2478 RegKey.Length = 0;
2479 RegKey.MaximumLength = sizeof(RegKeyBuffer);
2480 RegKey.Buffer = RegKeyBuffer;
2481
2482 /*
2483 * Retrieve configuration from Enum key
2484 */
2485
2486 Service = &DeviceNode->ServiceName;
2487
2488 RtlZeroMemory(QueryTable, sizeof(QueryTable));
2489 RtlInitUnicodeString(Service, NULL);
2490 RtlInitUnicodeString(&ClassGUID, NULL);
2491
2492 QueryTable[0].Name = L"Service";
2493 QueryTable[0].Flags = RTL_QUERY_REGISTRY_DIRECT;
2494 QueryTable[0].EntryContext = Service;
2495
2496 QueryTable[1].Name = L"ClassGUID";
2497 QueryTable[1].Flags = RTL_QUERY_REGISTRY_DIRECT;
2498 QueryTable[1].EntryContext = &ClassGUID;
2499 QueryTable[1].DefaultType = REG_SZ;
2500 QueryTable[1].DefaultData = L"";
2501 QueryTable[1].DefaultLength = 0;
2502
2503 RtlAppendUnicodeToString(&RegKey, L"\\Registry\\Machine\\System\\CurrentControlSet\\Enum\\");
2504 RtlAppendUnicodeStringToString(&RegKey, &DeviceNode->InstancePath);
2505
2506 Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
2507 RegKey.Buffer, QueryTable, NULL, NULL);
2508
2509 if (!NT_SUCCESS(Status))
2510 {
2511 /* FIXME: Log the error */
2512 DPRINT("Could not retrieve configuration for device %wZ (Status 0x%08x)\n",
2513 &DeviceNode->InstancePath, Status);
2514 IopDeviceNodeSetFlag(DeviceNode, DNF_DISABLED);
2515 return STATUS_SUCCESS;
2516 }
2517
2518 if (Service->Buffer == NULL)
2519 {
2520 if (NT_SUCCESS(IopQueryDeviceCapabilities(DeviceNode, &DeviceCaps)) &&
2521 DeviceCaps.RawDeviceOK)
2522 {
2523 DPRINT("%wZ is using parent bus driver (%wZ)\n", &DeviceNode->InstancePath, &ParentDeviceNode->ServiceName);
2524
2525 DeviceNode->ServiceName.Length = 0;
2526 DeviceNode->ServiceName.MaximumLength = 0;
2527 DeviceNode->ServiceName.Buffer = NULL;
2528 }
2529 else if (ClassGUID.Length != 0)
2530 {
2531 /* Device has a ClassGUID value, but no Service value.
2532 * Suppose it is using the NULL driver, so state the
2533 * device is started */
2534 DPRINT("%wZ is using NULL driver\n", &DeviceNode->InstancePath);
2535 IopDeviceNodeSetFlag(DeviceNode, DNF_STARTED);
2536 }
2537 else
2538 {
2539 DeviceNode->Problem = CM_PROB_FAILED_INSTALL;
2540 IopDeviceNodeSetFlag(DeviceNode, DNF_DISABLED);
2541 }
2542 return STATUS_SUCCESS;
2543 }
2544
2545 DPRINT("Got Service %S\n", Service->Buffer);
2546 }
2547
2548 return STATUS_SUCCESS;
2549 }
2550
2551 /*
2552 * IopActionInitChildServices
2553 *
2554 * Initialize the service for all (direct) child nodes of a parent node
2555 *
2556 * Parameters
2557 * DeviceNode
2558 * Pointer to device node.
2559 * Context
2560 * Pointer to parent node to initialize child node services for.
2561 *
2562 * Remarks
2563 * If the driver image for a service is not loaded and initialized
2564 * it is done here too. Any errors that occur are logged instead so
2565 * that all child services have a chance of being initialized.
2566 */
2567
2568 NTSTATUS
2569 IopActionInitChildServices(PDEVICE_NODE DeviceNode,
2570 PVOID Context)
2571 {
2572 PDEVICE_NODE ParentDeviceNode;
2573 NTSTATUS Status;
2574 BOOLEAN BootDrivers = !PnpSystemInit;
2575
2576 DPRINT("IopActionInitChildServices(%p, %p)\n", DeviceNode, Context);
2577
2578 ParentDeviceNode = Context;
2579
2580 /*
2581 * We are called for the parent too, but we don't need to do special
2582 * handling for this node
2583 */
2584 if (DeviceNode == ParentDeviceNode)
2585 {
2586 DPRINT("Success\n");
2587 return STATUS_SUCCESS;
2588 }
2589
2590 /*
2591 * We don't want to check for a direct child because
2592 * this function is called during boot to reinitialize
2593 * devices with drivers that couldn't load yet due to
2594 * stage 0 limitations (ie can't load from disk yet).
2595 */
2596
2597 if (!(DeviceNode->Flags & DNF_PROCESSED))
2598 {
2599 DPRINT1("Child not ready to be added\n");
2600 return STATUS_SUCCESS;
2601 }
2602
2603 if (IopDeviceNodeHasFlag(DeviceNode, DNF_STARTED) ||
2604 IopDeviceNodeHasFlag(DeviceNode, DNF_ADDED) ||
2605 IopDeviceNodeHasFlag(DeviceNode, DNF_DISABLED))
2606 return STATUS_SUCCESS;
2607
2608 if (DeviceNode->ServiceName.Buffer == NULL)
2609 {
2610 /* We don't need to worry about loading the driver because we're
2611 * being driven in raw mode so our parent must be loaded to get here */
2612 Status = IopInitializeDevice(DeviceNode, NULL);
2613 if (NT_SUCCESS(Status))
2614 {
2615 Status = IopStartDevice(DeviceNode);
2616 if (!NT_SUCCESS(Status))
2617 {
2618 DPRINT1("IopStartDevice(%wZ) failed with status 0x%08x\n",
2619 &DeviceNode->InstancePath, Status);
2620 }
2621 }
2622 }
2623 else
2624 {
2625 PLDR_DATA_TABLE_ENTRY ModuleObject;
2626 PDRIVER_OBJECT DriverObject;
2627
2628 KeEnterCriticalRegion();
2629 ExAcquireResourceExclusiveLite(&IopDriverLoadResource, TRUE);
2630 /* Get existing DriverObject pointer (in case the driver has
2631 already been loaded and initialized) */
2632 Status = IopGetDriverObject(
2633 &DriverObject,
2634 &DeviceNode->ServiceName,
2635 FALSE);
2636
2637 if (!NT_SUCCESS(Status))
2638 {
2639 /* Driver is not initialized, try to load it */
2640 Status = IopLoadServiceModule(&DeviceNode->ServiceName, &ModuleObject);
2641
2642 if (NT_SUCCESS(Status) || Status == STATUS_IMAGE_ALREADY_LOADED)
2643 {
2644 /* Initialize the driver */
2645 Status = IopInitializeDriverModule(DeviceNode, ModuleObject,
2646 &DeviceNode->ServiceName, FALSE, &DriverObject);
2647 if (!NT_SUCCESS(Status)) DeviceNode->Problem = CM_PROB_FAILED_DRIVER_ENTRY;
2648 }
2649 else if (Status == STATUS_DRIVER_UNABLE_TO_LOAD)
2650 {
2651 DPRINT1("Service '%wZ' is disabled\n", &DeviceNode->ServiceName);
2652 DeviceNode->Problem = CM_PROB_DISABLED_SERVICE;
2653 }
2654 else
2655 {
2656 DPRINT("IopLoadServiceModule(%wZ) failed with status 0x%08x\n",
2657 &DeviceNode->ServiceName, Status);
2658 if (!BootDrivers) DeviceNode->Problem = CM_PROB_DRIVER_FAILED_LOAD;
2659 }
2660 }
2661 ExReleaseResourceLite(&IopDriverLoadResource);
2662 KeLeaveCriticalRegion();
2663
2664 /* Driver is loaded and initialized at this point */
2665 if (NT_SUCCESS(Status))
2666 {
2667 /* Initialize the device, including all filters */
2668 Status = PipCallDriverAddDevice(DeviceNode, FALSE, DriverObject);
2669
2670 /* Remove the extra reference */
2671 ObDereferenceObject(DriverObject);
2672 }
2673 else
2674 {
2675 /*
2676 * Don't disable when trying to load only boot drivers
2677 */
2678 if (!BootDrivers)
2679 {
2680 IopDeviceNodeSetFlag(DeviceNode, DNF_DISABLED);
2681 }
2682 }
2683 }
2684
2685 return STATUS_SUCCESS;
2686 }
2687
2688 /*
2689 * IopInitializePnpServices
2690 *
2691 * Initialize services for discovered children
2692 *
2693 * Parameters
2694 * DeviceNode
2695 * Top device node to start initializing services.
2696 *
2697 * Return Value
2698 * Status
2699 */
2700 NTSTATUS
2701 IopInitializePnpServices(IN PDEVICE_NODE DeviceNode)
2702 {
2703 DEVICETREE_TRAVERSE_CONTEXT Context;
2704
2705 DPRINT("IopInitializePnpServices(%p)\n", DeviceNode);
2706
2707 IopInitDeviceTreeTraverseContext(
2708 &Context,
2709 DeviceNode,
2710 IopActionInitChildServices,
2711 DeviceNode);
2712
2713 return IopTraverseDeviceTree(&Context);
2714 }
2715
2716 static NTSTATUS INIT_FUNCTION
2717 IopEnumerateDetectedDevices(
2718 IN HANDLE hBaseKey,
2719 IN PUNICODE_STRING RelativePath OPTIONAL,
2720 IN HANDLE hRootKey,
2721 IN BOOLEAN EnumerateSubKeys,
2722 IN PCM_FULL_RESOURCE_DESCRIPTOR ParentBootResources,
2723 IN ULONG ParentBootResourcesLength)
2724 {
2725 UNICODE_STRING IdentifierU = RTL_CONSTANT_STRING(L"Identifier");
2726 UNICODE_STRING HardwareIDU = RTL_CONSTANT_STRING(L"HardwareID");
2727 UNICODE_STRING ConfigurationDataU = RTL_CONSTANT_STRING(L"Configuration Data");
2728 UNICODE_STRING BootConfigU = RTL_CONSTANT_STRING(L"BootConfig");
2729 UNICODE_STRING LogConfU = RTL_CONSTANT_STRING(L"LogConf");
2730 OBJECT_ATTRIBUTES ObjectAttributes;
2731 HANDLE hDevicesKey = NULL;
2732 HANDLE hDeviceKey = NULL;
2733 HANDLE hLevel1Key, hLevel2Key = NULL, hLogConf;
2734 UNICODE_STRING Level2NameU;
2735 WCHAR Level2Name[5];
2736 ULONG IndexDevice = 0;
2737 ULONG IndexSubKey;
2738 PKEY_BASIC_INFORMATION pDeviceInformation = NULL;
2739 ULONG DeviceInfoLength = sizeof(KEY_BASIC_INFORMATION) + 50 * sizeof(WCHAR);
2740 PKEY_VALUE_PARTIAL_INFORMATION pValueInformation = NULL;
2741 ULONG ValueInfoLength = sizeof(KEY_VALUE_PARTIAL_INFORMATION) + 50 * sizeof(WCHAR);
2742 UNICODE_STRING DeviceName, ValueName;
2743 ULONG RequiredSize;
2744 PCM_FULL_RESOURCE_DESCRIPTOR BootResources = NULL;
2745 ULONG BootResourcesLength;
2746 NTSTATUS Status;
2747
2748 const UNICODE_STRING IdentifierSerial = RTL_CONSTANT_STRING(L"SerialController");
2749 UNICODE_STRING HardwareIdSerial = RTL_CONSTANT_STRING(L"*PNP0501\0");
2750 static ULONG DeviceIndexSerial = 0;
2751 const UNICODE_STRING IdentifierKeyboard = RTL_CONSTANT_STRING(L"KeyboardController");
2752 UNICODE_STRING HardwareIdKeyboard = RTL_CONSTANT_STRING(L"*PNP0303\0");
2753 static ULONG DeviceIndexKeyboard = 0;
2754 const UNICODE_STRING IdentifierMouse = RTL_CONSTANT_STRING(L"PointerController");
2755 UNICODE_STRING HardwareIdMouse = RTL_CONSTANT_STRING(L"*PNP0F13\0");
2756 static ULONG DeviceIndexMouse = 0;
2757 const UNICODE_STRING IdentifierParallel = RTL_CONSTANT_STRING(L"ParallelController");
2758 UNICODE_STRING HardwareIdParallel = RTL_CONSTANT_STRING(L"*PNP0400\0");
2759 static ULONG DeviceIndexParallel = 0;
2760 const UNICODE_STRING IdentifierFloppy = RTL_CONSTANT_STRING(L"FloppyDiskPeripheral");
2761 UNICODE_STRING HardwareIdFloppy = RTL_CONSTANT_STRING(L"*PNP0700\0");
2762 static ULONG DeviceIndexFloppy = 0;
2763 UNICODE_STRING HardwareIdKey;
2764 PUNICODE_STRING pHardwareId;
2765 ULONG DeviceIndex = 0;
2766 PUCHAR CmResourceList;
2767 ULONG ListCount;
2768
2769 if (RelativePath)
2770 {
2771 Status = IopOpenRegistryKeyEx(&hDevicesKey, hBaseKey, RelativePath, KEY_ENUMERATE_SUB_KEYS);
2772 if (!NT_SUCCESS(Status))
2773 {
2774 DPRINT("ZwOpenKey() failed with status 0x%08lx\n", Status);
2775 goto cleanup;
2776 }
2777 }
2778 else
2779 hDevicesKey = hBaseKey;
2780
2781 pDeviceInformation = ExAllocatePool(PagedPool, DeviceInfoLength);
2782 if (!pDeviceInformation)
2783 {
2784 DPRINT("ExAllocatePool() failed\n");
2785 Status = STATUS_NO_MEMORY;
2786 goto cleanup;
2787 }
2788
2789 pValueInformation = ExAllocatePool(PagedPool, ValueInfoLength);
2790 if (!pValueInformation)
2791 {
2792 DPRINT("ExAllocatePool() failed\n");
2793 Status = STATUS_NO_MEMORY;
2794 goto cleanup;
2795 }
2796
2797 while (TRUE)
2798 {
2799 Status = ZwEnumerateKey(hDevicesKey, IndexDevice, KeyBasicInformation, pDeviceInformation, DeviceInfoLength, &RequiredSize);
2800 if (Status == STATUS_NO_MORE_ENTRIES)
2801 break;
2802 else if (Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
2803 {
2804 ExFreePool(pDeviceInformation);
2805 DeviceInfoLength = RequiredSize;
2806 pDeviceInformation = ExAllocatePool(PagedPool, DeviceInfoLength);
2807 if (!pDeviceInformation)
2808 {
2809 DPRINT("ExAllocatePool() failed\n");
2810 Status = STATUS_NO_MEMORY;
2811 goto cleanup;
2812 }
2813 Status = ZwEnumerateKey(hDevicesKey, IndexDevice, KeyBasicInformation, pDeviceInformation, DeviceInfoLength, &RequiredSize);
2814 }
2815 if (!NT_SUCCESS(Status))
2816 {
2817 DPRINT("ZwEnumerateKey() failed with status 0x%08lx\n", Status);
2818 goto cleanup;
2819 }
2820 IndexDevice++;
2821
2822 /* Open device key */
2823 DeviceName.Length = DeviceName.MaximumLength = (USHORT)pDeviceInformation->NameLength;
2824 DeviceName.Buffer = pDeviceInformation->Name;
2825
2826 Status = IopOpenRegistryKeyEx(&hDeviceKey, hDevicesKey, &DeviceName,
2827 KEY_QUERY_VALUE + (EnumerateSubKeys ? KEY_ENUMERATE_SUB_KEYS : 0));
2828 if (!NT_SUCCESS(Status))
2829 {
2830 DPRINT("ZwOpenKey() failed with status 0x%08lx\n", Status);
2831 goto cleanup;
2832 }
2833
2834 /* Read boot resources, and add then to parent ones */
2835 Status = ZwQueryValueKey(hDeviceKey, &ConfigurationDataU, KeyValuePartialInformation, pValueInformation, ValueInfoLength, &RequiredSize);
2836 if (Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
2837 {
2838 ExFreePool(pValueInformation);
2839 ValueInfoLength = RequiredSize;
2840 pValueInformation = ExAllocatePool(PagedPool, ValueInfoLength);
2841 if (!pValueInformation)
2842 {
2843 DPRINT("ExAllocatePool() failed\n");
2844 ZwDeleteKey(hLevel2Key);
2845 Status = STATUS_NO_MEMORY;
2846 goto cleanup;
2847 }
2848 Status = ZwQueryValueKey(hDeviceKey, &ConfigurationDataU, KeyValuePartialInformation, pValueInformation, ValueInfoLength, &RequiredSize);
2849 }
2850 if (Status == STATUS_OBJECT_NAME_NOT_FOUND)
2851 {
2852 BootResources = ParentBootResources;
2853 BootResourcesLength = ParentBootResourcesLength;
2854 }
2855 else if (!NT_SUCCESS(Status))
2856 {
2857 DPRINT("ZwQueryValueKey() failed with status 0x%08lx\n", Status);
2858 goto nextdevice;
2859 }
2860 else if (pValueInformation->Type != REG_FULL_RESOURCE_DESCRIPTOR)
2861 {
2862 DPRINT("Wrong registry type: got 0x%lx, expected 0x%lx\n", pValueInformation->Type, REG_FULL_RESOURCE_DESCRIPTOR);
2863 goto nextdevice;
2864 }
2865 else
2866 {
2867 static const ULONG Header = FIELD_OFFSET(CM_FULL_RESOURCE_DESCRIPTOR, PartialResourceList.PartialDescriptors);
2868
2869 /* Concatenate current resources and parent ones */
2870 if (ParentBootResourcesLength == 0)
2871 BootResourcesLength = pValueInformation->DataLength;
2872 else
2873 BootResourcesLength = ParentBootResourcesLength
2874 + pValueInformation->DataLength
2875 - Header;
2876 BootResources = ExAllocatePool(PagedPool, BootResourcesLength);
2877 if (!BootResources)
2878 {
2879 DPRINT("ExAllocatePool() failed\n");
2880 goto nextdevice;
2881 }
2882 if (ParentBootResourcesLength < sizeof(CM_FULL_RESOURCE_DESCRIPTOR))
2883 {
2884 RtlCopyMemory(BootResources, pValueInformation->Data, pValueInformation->DataLength);
2885 }
2886 else if (ParentBootResources->PartialResourceList.PartialDescriptors[ParentBootResources->PartialResourceList.Count - 1].Type == CmResourceTypeDeviceSpecific)
2887 {
2888 RtlCopyMemory(BootResources, pValueInformation->Data, pValueInformation->DataLength);
2889 RtlCopyMemory(
2890 (PVOID)((ULONG_PTR)BootResources + pValueInformation->DataLength),
2891 (PVOID)((ULONG_PTR)ParentBootResources + Header),
2892 ParentBootResourcesLength - Header);
2893 BootResources->PartialResourceList.Count += ParentBootResources->PartialResourceList.Count;
2894 }
2895 else
2896 {
2897 RtlCopyMemory(BootResources, pValueInformation->Data, Header);
2898 RtlCopyMemory(
2899 (PVOID)((ULONG_PTR)BootResources + Header),
2900 (PVOID)((ULONG_PTR)ParentBootResources + Header),
2901 ParentBootResourcesLength - Header);
2902 RtlCopyMemory(
2903 (PVOID)((ULONG_PTR)BootResources + ParentBootResourcesLength),
2904 pValueInformation->Data + Header,
2905 pValueInformation->DataLength - Header);
2906 BootResources->PartialResourceList.Count += ParentBootResources->PartialResourceList.Count;
2907 }
2908 }
2909
2910 if (EnumerateSubKeys)
2911 {
2912 IndexSubKey = 0;
2913 while (TRUE)
2914 {
2915 Status = ZwEnumerateKey(hDeviceKey, IndexSubKey, KeyBasicInformation, pDeviceInformation, DeviceInfoLength, &RequiredSize);
2916 if (Status == STATUS_NO_MORE_ENTRIES)
2917 break;
2918 else if (Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
2919 {
2920 ExFreePool(pDeviceInformation);
2921 DeviceInfoLength = RequiredSize;
2922 pDeviceInformation = ExAllocatePool(PagedPool, DeviceInfoLength);
2923 if (!pDeviceInformation)
2924 {
2925 DPRINT("ExAllocatePool() failed\n");
2926 Status = STATUS_NO_MEMORY;
2927 goto cleanup;
2928 }
2929 Status = ZwEnumerateKey(hDeviceKey, IndexSubKey, KeyBasicInformation, pDeviceInformation, DeviceInfoLength, &RequiredSize);
2930 }
2931 if (!NT_SUCCESS(Status))
2932 {
2933 DPRINT("ZwEnumerateKey() failed with status 0x%08lx\n", Status);
2934 goto cleanup;
2935 }
2936 IndexSubKey++;
2937 DeviceName.Length = DeviceName.MaximumLength = (USHORT)pDeviceInformation->NameLength;
2938 DeviceName.Buffer = pDeviceInformation->Name;
2939
2940 Status = IopEnumerateDetectedDevices(
2941 hDeviceKey,
2942 &DeviceName,
2943 hRootKey,
2944 TRUE,
2945 BootResources,
2946 BootResourcesLength);
2947 if (!NT_SUCCESS(Status))
2948 goto cleanup;
2949 }
2950 }
2951
2952 /* Read identifier */
2953 Status = ZwQueryValueKey(hDeviceKey, &IdentifierU, KeyValuePartialInformation, pValueInformation, ValueInfoLength, &RequiredSize);
2954 if (Status == STATUS_BUFFER_OVERFLOW || Status == STATUS_BUFFER_TOO_SMALL)
2955 {
2956 ExFreePool(pValueInformation);
2957 ValueInfoLength = RequiredSize;
2958 pValueInformation = ExAllocatePool(PagedPool, ValueInfoLength);
2959 if (!pValueInformation)
2960 {
2961 DPRINT("ExAllocatePool() failed\n");
2962 Status = STATUS_NO_MEMORY;
2963 goto cleanup;
2964 }
2965 Status = ZwQueryValueKey(hDeviceKey, &IdentifierU, KeyValuePartialInformation, pValueInformation, ValueInfoLength, &RequiredSize);
2966 }
2967 if (!NT_SUCCESS(Status))
2968 {
2969 if (Status != STATUS_OBJECT_NAME_NOT_FOUND)
2970 {
2971 DPRINT("ZwQueryValueKey() failed with status 0x%08lx\n", Status);
2972 goto nextdevice;
2973 }
2974 ValueName.Length = ValueName.MaximumLength = 0;
2975 }
2976 else if (pValueInformation->Type != REG_SZ)
2977 {
2978 DPRINT("Wrong registry type: got 0x%lx, expected 0x%lx\n", pValueInformation->Type, REG_SZ);
2979 goto nextdevice;
2980 }
2981 else
2982 {
2983 /* Assign hardware id to this device */
2984 ValueName.Length = ValueName.MaximumLength = (USHORT)pValueInformation->DataLength;
2985 ValueName.Buffer = (PWCHAR)pValueInformation->Data;
2986 if (ValueName.Length >= sizeof(WCHAR) && ValueName.Buffer[ValueName.Length / sizeof(WCHAR) - 1] == UNICODE_NULL)
2987 ValueName.Length -= sizeof(WCHAR);
2988 }
2989
2990 if (RelativePath && RtlCompareUnicodeString(RelativePath, &IdentifierSerial, FALSE) == 0)
2991 {
2992 pHardwareId = &HardwareIdSerial;
2993 DeviceIndex = DeviceIndexSerial++;
2994 }
2995 else if (RelativePath && RtlCompareUnicodeString(RelativePath, &IdentifierKeyboard, FALSE) == 0)
2996 {
2997 pHardwareId = &HardwareIdKeyboard;
2998 DeviceIndex = DeviceIndexKeyboard++;
2999 }
3000 else if (RelativePath && RtlCompareUnicodeString(RelativePath, &IdentifierMouse, FALSE) == 0)
3001 {
3002 pHardwareId = &HardwareIdMouse;
3003 DeviceIndex = DeviceIndexMouse++;
3004 }
3005 else if (RelativePath && RtlCompareUnicodeString(RelativePath, &IdentifierParallel, FALSE) == 0)
3006 {
3007 pHardwareId = &HardwareIdParallel;
3008 DeviceIndex = DeviceIndexParallel++;
3009 }
3010 else if (RelativePath && RtlCompareUnicodeString(RelativePath, &IdentifierFloppy, FALSE) == 0)
3011 {
3012 pHardwareId = &HardwareIdFloppy;
3013 DeviceIndex = DeviceIndexFloppy++;
3014 }
3015 else
3016 {
3017 /* Unknown key path */
3018 DPRINT("Unknown key path '%wZ'\n", RelativePath);
3019 goto nextdevice;
3020 }
3021
3022 /* Prepare hardware id key (hardware id value without final \0) */
3023 HardwareIdKey = *pHardwareId;
3024 HardwareIdKey.Length -= sizeof(UNICODE_NULL);
3025
3026 /* Add the detected device to Root key */
3027 InitializeObjectAttributes(&ObjectAttributes, &HardwareIdKey, OBJ_KERNEL_HANDLE, hRootKey, NULL);
3028 Status = ZwCreateKey(
3029 &hLevel1Key,
3030 KEY_CREATE_SUB_KEY,
3031 &ObjectAttributes,
3032 0,
3033 NULL,
3034 ExpInTextModeSetup ? REG_OPTION_VOLATILE : 0,
3035 NULL);
3036 if (!NT_SUCCESS(Status))
3037 {
3038 DPRINT("ZwCreateKey() failed with status 0x%08lx\n", Status);
3039 goto nextdevice;
3040 }
3041 swprintf(Level2Name, L"%04lu", DeviceIndex);
3042 RtlInitUnicodeString(&Level2NameU, Level2Name);
3043 InitializeObjectAttributes(&ObjectAttributes, &Level2NameU, OBJ_KERNEL_HANDLE, hLevel1Key, NULL);
3044 Status = ZwCreateKey(
3045 &hLevel2Key,
3046 KEY_SET_VALUE | KEY_CREATE_SUB_KEY,
3047 &ObjectAttributes,
3048 0,
3049 NULL,
3050 ExpInTextModeSetup ? REG_OPTION_VOLATILE : 0,
3051 NULL);
3052 ZwClose(hLevel1Key);
3053 if (!NT_SUCCESS(Status))
3054 {
3055 DPRINT("ZwCreateKey() failed with status 0x%08lx\n", Status);
3056 goto nextdevice;
3057 }
3058 DPRINT("Found %wZ #%lu (%wZ)\n", &ValueName, DeviceIndex, &HardwareIdKey);
3059 Status = ZwSetValueKey(hLevel2Key, &HardwareIDU, 0, REG_MULTI_SZ, pHardwareId->Buffer, pHardwareId->MaximumLength);
3060 if (!NT_SUCCESS(Status))
3061 {
3062 DPRINT("ZwSetValueKey() failed with status 0x%08lx\n", Status);
3063 ZwDeleteKey(hLevel2Key);
3064 goto nextdevice;
3065 }
3066 /* Create 'LogConf' subkey */
3067 InitializeObjectAttributes(&ObjectAttributes, &LogConfU, OBJ_KERNEL_HANDLE, hLevel2Key, NULL);
3068 Status = ZwCreateKey(
3069 &hLogConf,
3070 KEY_SET_VALUE,
3071 &ObjectAttributes,
3072 0,
3073 NULL,
3074 REG_OPTION_VOLATILE,
3075 NULL);
3076 if (!NT_SUCCESS(Status))
3077 {
3078 DPRINT("ZwCreateKey() failed with status 0x%08lx\n", Status);
3079 ZwDeleteKey(hLevel2Key);
3080 goto nextdevice;
3081 }
3082 if (BootResourcesLength >= sizeof(CM_FULL_RESOURCE_DESCRIPTOR))
3083 {
3084 CmResourceList = ExAllocatePool(PagedPool, BootResourcesLength + sizeof(ULONG));
3085 if (!CmResourceList)
3086 {
3087 ZwClose(hLogConf);
3088 ZwDeleteKey(hLevel2Key);
3089 goto nextdevice;
3090 }
3091
3092 /* Add the list count (1st member of CM_RESOURCE_LIST) */
3093 ListCount = 1;
3094 RtlCopyMemory(CmResourceList,
3095 &ListCount,
3096 sizeof(ULONG));
3097
3098 /* Now add the actual list (2nd member of CM_RESOURCE_LIST) */
3099 RtlCopyMemory(CmResourceList + sizeof(ULONG),
3100 BootResources,
3101 BootResourcesLength);
3102
3103 /* Save boot resources to 'LogConf\BootConfig' */
3104 Status = ZwSetValueKey(hLogConf, &BootConfigU, 0, REG_RESOURCE_LIST, CmResourceList, BootResourcesLength + sizeof(ULONG));
3105 if (!NT_SUCCESS(Status))
3106 {
3107 DPRINT("ZwSetValueKey() failed with status 0x%08lx\n", Status);
3108 ZwClose(hLogConf);
3109 ZwDeleteKey(hLevel2Key);
3110 goto nextdevice;
3111 }
3112 }
3113 ZwClose(hLogConf);
3114
3115 nextdevice:
3116 if (BootResources && BootResources != ParentBootResources)
3117 {
3118 ExFreePool(BootResources);
3119 BootResources = NULL;
3120 }
3121 if (hLevel2Key)
3122 {
3123 ZwClose(hLevel2Key);
3124 hLevel2Key = NULL;
3125 }
3126 if (hDeviceKey)
3127 {
3128 ZwClose(hDeviceKey);
3129 hDeviceKey = NULL;
3130 }
3131 }
3132
3133 Status = STATUS_SUCCESS;
3134
3135 cleanup:
3136 if (hDevicesKey && hDevicesKey != hBaseKey)
3137 ZwClose(hDevicesKey);
3138 if (hDeviceKey)
3139 ZwClose(hDeviceKey);
3140 if (pDeviceInformation)
3141 ExFreePool(pDeviceInformation);
3142 if (pValueInformation)
3143 ExFreePool(pValueInformation);
3144 return Status;
3145 }
3146
3147 static BOOLEAN INIT_FUNCTION
3148 IopIsFirmwareMapperDisabled(VOID)
3149 {
3150 UNICODE_STRING KeyPathU = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\SYSTEM\\CURRENTCONTROLSET\\Control\\Pnp");
3151 UNICODE_STRING KeyNameU = RTL_CONSTANT_STRING(L"DisableFirmwareMapper");
3152 OBJECT_ATTRIBUTES ObjectAttributes;
3153 HANDLE hPnpKey;
3154 PKEY_VALUE_PARTIAL_INFORMATION KeyInformation;
3155 ULONG DesiredLength, Length;
3156 ULONG KeyValue = 0;
3157 NTSTATUS Status;
3158
3159 InitializeObjectAttributes(&ObjectAttributes, &KeyPathU, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, NULL, NULL);
3160 Status = ZwOpenKey(&hPnpKey, KEY_QUERY_VALUE, &ObjectAttributes);
3161 if (NT_SUCCESS(Status))
3162 {
3163 Status = ZwQueryValueKey(hPnpKey,
3164 &KeyNameU,
3165 KeyValuePartialInformation,
3166 NULL,
3167 0,
3168 &DesiredLength);
3169 if ((Status == STATUS_BUFFER_TOO_SMALL) ||
3170 (Status == STATUS_BUFFER_OVERFLOW))
3171 {
3172 Length = DesiredLength;
3173 KeyInformation = ExAllocatePool(PagedPool, Length);
3174 if (KeyInformation)
3175 {
3176 Status = ZwQueryValueKey(hPnpKey,
3177 &KeyNameU,
3178 KeyValuePartialInformation,
3179 KeyInformation,
3180 Length,
3181 &DesiredLength);
3182 if (NT_SUCCESS(Status) && KeyInformation->DataLength == sizeof(ULONG))
3183 {
3184 KeyValue = (ULONG)(*KeyInformation->Data);
3185 }
3186 else
3187 {
3188 DPRINT1("ZwQueryValueKey(%wZ%wZ) failed\n", &KeyPathU, &KeyNameU);
3189 }
3190
3191 ExFreePool(KeyInformation);
3192 }
3193 else
3194 {
3195 DPRINT1("Failed to allocate memory for registry query\n");
3196 }
3197 }
3198 else
3199 {
3200 DPRINT1("ZwQueryValueKey(%wZ%wZ) failed with status 0x%08lx\n", &KeyPathU, &KeyNameU, Status);
3201 }
3202
3203 ZwClose(hPnpKey);
3204 }
3205 else
3206 {
3207 DPRINT1("ZwOpenKey(%wZ) failed with status 0x%08lx\n", &KeyPathU, Status);
3208 }
3209
3210 DPRINT("Firmware mapper is %s\n", KeyValue != 0 ? "disabled" : "enabled");
3211
3212 return (KeyValue != 0) ? TRUE : FALSE;
3213 }
3214
3215 NTSTATUS
3216 NTAPI
3217 INIT_FUNCTION
3218 IopUpdateRootKey(VOID)
3219 {
3220 UNICODE_STRING EnumU = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\Enum");
3221 UNICODE_STRING RootPathU = RTL_CONSTANT_STRING(L"Root");
3222 UNICODE_STRING MultiKeyPathU = RTL_CONSTANT_STRING(L"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System\\MultifunctionAdapter");
3223 OBJECT_ATTRIBUTES ObjectAttributes;
3224 HANDLE hEnum, hRoot;
3225 NTSTATUS Status;
3226
3227 InitializeObjectAttributes(&ObjectAttributes, &EnumU, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, NULL, NULL);
3228 Status = ZwCreateKey(&hEnum, KEY_CREATE_SUB_KEY, &ObjectAttributes, 0, NULL, 0, NULL);
3229 if (!NT_SUCCESS(Status))
3230 {
3231 DPRINT1("ZwCreateKey() failed with status 0x%08lx\n", Status);
3232 return Status;
3233 }
3234
3235 InitializeObjectAttributes(&ObjectAttributes, &RootPathU, OBJ_KERNEL_HANDLE | OBJ_CASE_INSENSITIVE, hEnum, NULL);
3236 Status = ZwCreateKey(&hRoot, KEY_CREATE_SUB_KEY, &ObjectAttributes, 0, NULL, 0, NULL);
3237 ZwClose(hEnum);
3238 if (!NT_SUCCESS(Status))
3239 {
3240 DPRINT1("ZwOpenKey() failed with status 0x%08lx\n", Status);
3241 return Status;
3242 }
3243
3244 if (!IopIsFirmwareMapperDisabled())
3245 {
3246 Status = IopOpenRegistryKeyEx(&hEnum, NULL, &MultiKeyPathU, KEY_ENUMERATE_SUB_KEYS);
3247 if (!NT_SUCCESS(Status))
3248 {
3249 /* Nothing to do, don't return with an error status */
3250 DPRINT("ZwOpenKey() failed with status 0x%08lx\n", Status);
3251 ZwClose(hRoot);
3252 return STATUS_SUCCESS;
3253 }
3254 Status = IopEnumerateDetectedDevices(
3255 hEnum,
3256 NULL,
3257 hRoot,
3258 TRUE,
3259 NULL,
3260 0);
3261 ZwClose(hEnum);
3262 }
3263 else
3264 {
3265 /* Enumeration is disabled */
3266 Status = STATUS_SUCCESS;
3267 }
3268
3269 ZwClose(hRoot);
3270
3271 return Status;
3272 }
3273
3274 NTSTATUS
3275 NTAPI
3276 IopOpenRegistryKeyEx(PHANDLE KeyHandle,
3277 HANDLE ParentKey,
3278 PUNICODE_STRING Name,
3279 ACCESS_MASK DesiredAccess)
3280 {
3281 OBJECT_ATTRIBUTES ObjectAttributes;
3282 NTSTATUS Status;
3283
3284 PAGED_CODE();
3285
3286 *KeyHandle = NULL;
3287
3288 InitializeObjectAttributes(&ObjectAttributes,
3289 Name,
3290 OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
3291 ParentKey,
3292 NULL);
3293
3294 Status = ZwOpenKey(KeyHandle, DesiredAccess, &ObjectAttributes);
3295
3296 return Status;
3297 }
3298
3299 NTSTATUS
3300 NTAPI
3301 IopCreateRegistryKeyEx(OUT PHANDLE Handle,
3302 IN HANDLE RootHandle OPTIONAL,
3303 IN PUNICODE_STRING KeyName,
3304 IN ACCESS_MASK DesiredAccess,
3305 IN ULONG CreateOptions,
3306 OUT PULONG Disposition OPTIONAL)
3307 {
3308 OBJECT_ATTRIBUTES ObjectAttributes;
3309 ULONG KeyDisposition, RootHandleIndex = 0, i = 1, NestedCloseLevel = 0;
3310 USHORT Length;
3311 HANDLE HandleArray[2];
3312 BOOLEAN Recursing = TRUE;
3313 PWCHAR pp, p, p1;
3314 UNICODE_STRING KeyString;
3315 NTSTATUS Status = STATUS_SUCCESS;
3316 PAGED_CODE();
3317
3318 /* P1 is start, pp is end */
3319 p1 = KeyName->Buffer;
3320 pp = (PVOID)((ULONG_PTR)p1 + KeyName->Length);
3321
3322 /* Create the target key */
3323 InitializeObjectAttributes(&ObjectAttributes,
3324 KeyName,
3325 OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
3326 RootHandle,
3327 NULL);
3328 Status = ZwCreateKey(&HandleArray[i],
3329 DesiredAccess,
3330 &ObjectAttributes,
3331 0,
3332 NULL,
3333 CreateOptions,
3334 &KeyDisposition);
3335
3336 /* Now we check if this failed */
3337 if ((Status == STATUS_OBJECT_NAME_NOT_FOUND) && (RootHandle))
3338 {
3339 /* Target key failed, so we'll need to create its parent. Setup array */
3340 HandleArray[0] = NULL;
3341 HandleArray[1] = RootHandle;
3342
3343 /* Keep recursing for each missing parent */
3344 while (Recursing)
3345 {
3346 /* And if we're deep enough, close the last handle */
3347 if (NestedCloseLevel > 1) ZwClose(HandleArray[RootHandleIndex]);
3348
3349 /* We're setup to ping-pong between the two handle array entries */
3350 RootHandleIndex = i;
3351 i = (i + 1) & 1;
3352
3353 /* Clear the one we're attempting to open now */
3354 HandleArray[i] = NULL;
3355
3356 /* Process the parent key name */
3357 for (p = p1; ((p < pp) && (*p != OBJ_NAME_PATH_SEPARATOR)); p++);
3358 Length = (USHORT)(p - p1) * sizeof(WCHAR);
3359
3360 /* Is there a parent name? */
3361 if (Length)
3362 {
3363 /* Build the unicode string for it */
3364 KeyString.Buffer = p1;
3365 KeyString.Length = KeyString.MaximumLength = Length;
3366
3367 /* Now try opening the parent */
3368 InitializeObjectAttributes(&ObjectAttributes,
3369 &KeyString,
3370 OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE,
3371 HandleArray[RootHandleIndex],
3372 NULL);
3373 Status = ZwCreateKey(&HandleArray[i],
3374 DesiredAccess,
3375 &ObjectAttributes,
3376 0,
3377 NULL,
3378 CreateOptions,
3379 &KeyDisposition);
3380 if (NT_SUCCESS(Status))
3381 {
3382 /* It worked, we have one more handle */
3383 NestedCloseLevel++;
3384 }
3385 else
3386 {
3387 /* Parent key creation failed, abandon loop */
3388 Recursing = FALSE;
3389 continue;
3390 }
3391 }
3392 else
3393 {
3394 /* We don't have a parent name, probably corrupted key name */
3395 Status = STATUS_INVALID_PARAMETER;
3396 Recursing = FALSE;
3397 continue;
3398 }
3399
3400 /* Now see if there's more parents to create */
3401 p1 = p + 1;
3402 if ((p == pp) || (p1 == pp))
3403 {
3404 /* We're done, hopefully successfully, so stop */
3405 Recursing = FALSE;
3406 }
3407 }
3408
3409 /* Outer loop check for handle nesting that requires closing the top handle */
3410 if (NestedCloseLevel > 1) ZwClose(HandleArray[RootHandleIndex]);
3411 }
3412
3413 /* Check if we broke out of the loop due to success */
3414 if (NT_SUCCESS(Status))
3415 {
3416 /* Return the target handle (we closed all the parent ones) and disposition */
3417 *Handle = HandleArray[i];
3418 if (Disposition) *Disposition = KeyDisposition;
3419 }
3420
3421 /* Return the success state */
3422 return Status;
3423 }
3424
3425 NTSTATUS
3426 NTAPI
3427 IopGetRegistryValue(IN HANDLE Handle,
3428 IN PWSTR ValueName,
3429 OUT PKEY_VALUE_FULL_INFORMATION *Information)
3430 {
3431 UNICODE_STRING ValueString;
3432 NTSTATUS Status;
3433 PKEY_VALUE_FULL_INFORMATION FullInformation;
3434 ULONG Size;
3435 PAGED_CODE();
3436
3437 RtlInitUnicodeString(&ValueString, ValueName);
3438
3439 Status = ZwQueryValueKey(Handle,
3440 &ValueString,
3441 KeyValueFullInformation,
3442 NULL,
3443 0,
3444 &Size);
3445 if ((Status != STATUS_BUFFER_OVERFLOW) &&
3446 (Status != STATUS_BUFFER_TOO_SMALL))
3447 {
3448 return Status;
3449 }
3450
3451 FullInformation = ExAllocatePool(NonPagedPool, Size);
3452 if (!FullInformation) return STATUS_INSUFFICIENT_RESOURCES;
3453
3454 Status = ZwQueryValueKey(Handle,
3455 &ValueString,
3456 KeyValueFullInformation,
3457 FullInformation,
3458 Size,
3459 &Size);
3460 if (!NT_SUCCESS(Status))
3461 {
3462 ExFreePool(FullInformation);
3463 return Status;
3464 }
3465
3466 *Information = FullInformation;
3467 return STATUS_SUCCESS;
3468 }
3469
3470 RTL_GENERIC_COMPARE_RESULTS
3471 NTAPI
3472 PiCompareInstancePath(IN PRTL_AVL_TABLE Table,
3473 IN PVOID FirstStruct,
3474 IN PVOID SecondStruct)
3475 {
3476 /* FIXME: TODO */
3477 ASSERT(FALSE);
3478 return 0;
3479 }
3480
3481 //
3482 // The allocation function is called by the generic table package whenever
3483 // it needs to allocate memory for the table.
3484 //
3485
3486 PVOID
3487 NTAPI
3488 PiAllocateGenericTableEntry(IN PRTL_AVL_TABLE Table,
3489 IN CLONG ByteSize)
3490 {
3491 /* FIXME: TODO */
3492 ASSERT(FALSE);
3493 return NULL;
3494 }
3495
3496 VOID
3497 NTAPI
3498 PiFreeGenericTableEntry(IN PRTL_AVL_TABLE Table,
3499 IN PVOID Buffer)
3500 {
3501 /* FIXME: TODO */
3502 ASSERT(FALSE);
3503 }
3504
3505 VOID
3506 NTAPI
3507 PpInitializeDeviceReferenceTable(VOID)
3508 {
3509 /* Setup the guarded mutex and AVL table */
3510 KeInitializeGuardedMutex(&PpDeviceReferenceTableLock);
3511 RtlInitializeGenericTableAvl(
3512 &PpDeviceReferenceTable,
3513 (PRTL_AVL_COMPARE_ROUTINE)PiCompareInstancePath,
3514 (PRTL_AVL_ALLOCATE_ROUTINE)PiAllocateGenericTableEntry,
3515 (PRTL_AVL_FREE_ROUTINE)PiFreeGenericTableEntry,
3516 NULL);
3517 }
3518
3519 BOOLEAN
3520 NTAPI
3521 PiInitPhase0(VOID)
3522 {
3523 /* Initialize the resource when accessing device registry data */
3524 ExInitializeResourceLite(&PpRegistryDeviceResource);
3525
3526 /* Setup the device reference AVL table */
3527 PpInitializeDeviceReferenceTable();
3528 return TRUE;
3529 }
3530
3531 BOOLEAN
3532 NTAPI
3533 PpInitSystem(VOID)
3534 {
3535 /* Check the initialization phase */
3536 switch (ExpInitializationPhase)
3537 {
3538 case 0:
3539
3540 /* Do Phase 0 */
3541 return PiInitPhase0();
3542
3543 case 1:
3544
3545 /* Do Phase 1 */
3546 return TRUE;
3547 //return PiInitPhase1();
3548
3549 default:
3550
3551 /* Don't know any other phase! Bugcheck! */
3552 KeBugCheck(UNEXPECTED_INITIALIZATION_CALL);
3553 return FALSE;
3554 }
3555 }
3556
3557 LONG IopNumberDeviceNodes;
3558
3559 PDEVICE_NODE
3560 NTAPI
3561 PipAllocateDeviceNode(IN PDEVICE_OBJECT PhysicalDeviceObject)
3562 {
3563 PDEVICE_NODE DeviceNode;
3564 PAGED_CODE();
3565
3566 /* Allocate it */
3567 DeviceNode = ExAllocatePoolWithTag(NonPagedPool, sizeof(DEVICE_NODE), TAG_IO_DEVNODE);
3568 if (!DeviceNode) return DeviceNode;
3569
3570 /* Statistics */
3571 InterlockedIncrement(&IopNumberDeviceNodes);
3572
3573 /* Set it up */
3574 RtlZeroMemory(DeviceNode, sizeof(DEVICE_NODE));
3575 DeviceNode->InterfaceType = InterfaceTypeUndefined;
3576 DeviceNode->BusNumber = -1;
3577 DeviceNode->ChildInterfaceType = InterfaceTypeUndefined;
3578 DeviceNode->ChildBusNumber = -1;
3579 DeviceNode->ChildBusTypeIndex = -1;
3580 // KeInitializeEvent(&DeviceNode->EnumerationMutex, SynchronizationEvent, TRUE);
3581 InitializeListHead(&DeviceNode->DeviceArbiterList);
3582 InitializeListHead(&DeviceNode->DeviceTranslatorList);
3583 InitializeListHead(&DeviceNode->TargetDeviceNotify);
3584 InitializeListHead(&DeviceNode->DockInfo.ListEntry);
3585 InitializeListHead(&DeviceNode->PendedSetInterfaceState);
3586
3587 /* Check if there is a PDO */
3588 if (PhysicalDeviceObject)
3589 {
3590 /* Link it and remove the init flag */
3591 DeviceNode->PhysicalDeviceObject = PhysicalDeviceObject;
3592 ((PEXTENDED_DEVOBJ_EXTENSION)PhysicalDeviceObject->DeviceObjectExtension)->DeviceNode = DeviceNode;
3593 PhysicalDeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
3594 }
3595
3596 /* Return the node */
3597 return DeviceNode;
3598 }
3599
3600 /* PUBLIC FUNCTIONS **********************************************************/
3601
3602 NTSTATUS
3603 NTAPI
3604 PnpBusTypeGuidGet(IN USHORT Index,
3605 IN LPGUID BusTypeGuid)
3606 {
3607 NTSTATUS Status = STATUS_SUCCESS;
3608
3609 /* Acquire the lock */
3610 ExAcquireFastMutex(&PnpBusTypeGuidList->Lock);
3611
3612 /* Validate size */
3613 if (Index < PnpBusTypeGuidList->GuidCount)
3614 {
3615 /* Copy the data */
3616 RtlCopyMemory(BusTypeGuid, &PnpBusTypeGuidList->Guids[Index], sizeof(GUID));
3617 }
3618 else
3619 {
3620 /* Failure path */
3621 Status = STATUS_OBJECT_NAME_NOT_FOUND;
3622 }
3623
3624 /* Release lock and return status */
3625 ExReleaseFastMutex(&PnpBusTypeGuidList->Lock);
3626 return Status;
3627 }
3628
3629 NTSTATUS
3630 NTAPI
3631 PnpDeviceObjectToDeviceInstance(IN PDEVICE_OBJECT DeviceObject,
3632 IN PHANDLE DeviceInstanceHandle,
3633 IN ACCESS_MASK DesiredAccess)
3634 {
3635 NTSTATUS Status;
3636 HANDLE KeyHandle;
3637 PDEVICE_NODE DeviceNode;
3638 UNICODE_STRING KeyName = RTL_CONSTANT_STRING(L"\\REGISTRY\\MACHINE\\SYSTEM\\CURRENTCONTROLSET\\ENUM");
3639 PAGED_CODE();
3640
3641 /* Open the enum key */
3642 Status = IopOpenRegistryKeyEx(&KeyHandle,
3643 NULL,
3644 &KeyName,
3645 KEY_READ);
3646 if (!NT_SUCCESS(Status)) return Status;
3647
3648 /* Make sure we have an instance path */
3649 DeviceNode = IopGetDeviceNode(DeviceObject);
3650 if ((DeviceNode) && (DeviceNode->InstancePath.Length))
3651 {
3652 /* Get the instance key */
3653 Status = IopOpenRegistryKeyEx(DeviceInstanceHandle,
3654 KeyHandle,
3655 &DeviceNode->InstancePath,
3656 DesiredAccess);
3657 }
3658 else
3659 {
3660 /* Fail */
3661 Status = STATUS_INVALID_DEVICE_REQUEST;
3662 }
3663
3664 /* Close the handle and return status */
3665 ZwClose(KeyHandle);
3666 return Status;
3667 }
3668
3669 ULONG
3670 NTAPI
3671 PnpDetermineResourceListSize(IN PCM_RESOURCE_LIST ResourceList)
3672 {
3673 ULONG FinalSize, PartialSize, EntrySize, i, j;
3674 PCM_FULL_RESOURCE_DESCRIPTOR FullDescriptor;
3675 PCM_PARTIAL_RESOURCE_DESCRIPTOR PartialDescriptor;
3676
3677 /* If we don't have one, that's easy */
3678 if (!ResourceList) return 0;
3679
3680 /* Start with the minimum size possible */
3681 FinalSize = FIELD_OFFSET(CM_RESOURCE_LIST, List);
3682
3683 /* Loop each full descriptor */
3684 FullDescriptor = ResourceList->List;
3685 for (i = 0; i < ResourceList->Count; i++)
3686 {
3687 /* Start with the minimum size possible */
3688 PartialSize = FIELD_OFFSET(CM_FULL_RESOURCE_DESCRIPTOR, PartialResourceList) +
3689 FIELD_OFFSET(CM_PARTIAL_RESOURCE_LIST, PartialDescriptors);
3690
3691 /* Loop each partial descriptor */
3692 PartialDescriptor = FullDescriptor->PartialResourceList.PartialDescriptors;
3693 for (j = 0; j < FullDescriptor->PartialResourceList.Count; j++)
3694 {
3695 /* Start with the minimum size possible */
3696 EntrySize = sizeof(CM_PARTIAL_RESOURCE_DESCRIPTOR);
3697
3698 /* Check if there is extra data */
3699 if (PartialDescriptor->Type == CmResourceTypeDeviceSpecific)
3700 {
3701 /* Add that data */
3702 EntrySize += PartialDescriptor->u.DeviceSpecificData.DataSize;
3703 }
3704
3705 /* The size of partial descriptors is bigger */
3706 PartialSize += EntrySize;
3707
3708 /* Go to the next partial descriptor */
3709 PartialDescriptor = (PVOID)((ULONG_PTR)PartialDescriptor + EntrySize);
3710 }
3711
3712 /* The size of full descriptors is bigger */
3713 FinalSize += PartialSize;
3714
3715 /* Go to the next full descriptor */
3716 FullDescriptor = (PVOID)((ULONG_PTR)FullDescriptor + PartialSize);
3717 }
3718
3719 /* Return the final size */
3720 return FinalSize;
3721 }
3722
3723 NTSTATUS
3724 NTAPI
3725 PiGetDeviceRegistryProperty(IN PDEVICE_OBJECT DeviceObject,
3726 IN ULONG ValueType,
3727 IN PWSTR ValueName,
3728 IN PWSTR KeyName,
3729 OUT PVOID Buffer,
3730 IN PULONG BufferLength)
3731 {
3732 NTSTATUS Status;
3733 HANDLE KeyHandle, SubHandle;
3734 UNICODE_STRING KeyString;
3735 PKEY_VALUE_FULL_INFORMATION KeyValueInfo = NULL;
3736 ULONG Length;
3737 PAGED_CODE();
3738
3739 /* Find the instance key */
3740 Status = PnpDeviceObjectToDeviceInstance(DeviceObject, &KeyHandle, KEY_READ);
3741 if (NT_SUCCESS(Status))
3742 {
3743 /* Check for name given by caller */
3744 if (KeyName)
3745 {
3746 /* Open this key */
3747 RtlInitUnicodeString(&KeyString, KeyName);
3748 Status = IopOpenRegistryKeyEx(&SubHandle,
3749 KeyHandle,
3750 &KeyString,
3751 KEY_READ);
3752 if (NT_SUCCESS(Status))
3753 {
3754 /* And use this handle instead */
3755 ZwClose(KeyHandle);
3756 KeyHandle = SubHandle;
3757 }
3758 }
3759
3760 /* Check if sub-key handle succeeded (or no-op if no key name given) */
3761 if (NT_SUCCESS(Status))
3762 {
3763 /* Now get the size of the property */
3764 Status = IopGetRegistryValue(KeyHandle,
3765 ValueName,
3766 &KeyValueInfo);
3767 }
3768
3769 /* Close the key */
3770 ZwClose(KeyHandle);
3771 }
3772
3773 /* Fail if any of the registry operations failed */
3774 if (!NT_SUCCESS(Status)) return Status;
3775
3776 /* Check how much data we have to copy */
3777 Length = KeyValueInfo->DataLength;
3778 if (*BufferLength >= Length)
3779 {
3780 /* Check for a match in the value type */
3781 if (KeyValueInfo->Type == ValueType)
3782 {
3783 /* Copy the data */
3784 RtlCopyMemory(Buffer,
3785 (PVOID)((ULONG_PTR)KeyValueInfo +
3786 KeyValueInfo->DataOffset),
3787 Length);
3788 }
3789 else
3790 {
3791 /* Invalid registry property type, fail */
3792 Status = STATUS_INVALID_PARAMETER_2;
3793 }
3794 }
3795 else
3796 {
3797 /* Buffer is too small to hold data */
3798 Status = STATUS_BUFFER_TOO_SMALL;
3799 }
3800
3801 /* Return the required buffer length, free the buffer, and return status */
3802 *BufferLength = Length;
3803 ExFreePool(KeyValueInfo);
3804 return Status;
3805 }
3806
3807 #define PIP_RETURN_DATA(x, y) {ReturnLength = x; Data = y; Status = STATUS_SUCCESS; break;}
3808 #define PIP_REGISTRY_DATA(x, y) {ValueName = x; ValueType = y; break;}
3809 #define PIP_UNIMPLEMENTED() {UNIMPLEMENTED_DBGBREAK(); break;}
3810
3811 /*
3812 * @implemented
3813 */
3814 NTSTATUS
3815 NTAPI
3816 IoGetDeviceProperty(IN PDEVICE_OBJECT DeviceObject,
3817 IN DEVICE_REGISTRY_PROPERTY DeviceProperty,
3818 IN ULONG BufferLength,
3819 OUT PVOID PropertyBuffer,
3820 OUT PULONG ResultLength)
3821 {
3822 PDEVICE_NODE DeviceNode = IopGetDeviceNode(DeviceObject);
3823 DEVICE_CAPABILITIES DeviceCaps;
3824 ULONG ReturnLength = 0, Length = 0, ValueType;
3825 PWCHAR ValueName = NULL, EnumeratorNameEnd, DeviceInstanceName;
3826 PVOID Data = NULL;
3827 NTSTATUS Status = STATUS_BUFFER_TOO_SMALL;
3828 GUID BusTypeGuid;
3829 POBJECT_NAME_INFORMATION ObjectNameInfo = NULL;