ReactOS  0.4.15-dev-4914-g2220e56
volume.c
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1 /* Copyright (c) Mark Harmstone 2016-17
2  *
3  * This file is part of WinBtrfs.
4  *
5  * WinBtrfs is free software: you can redistribute it and/or modify
6  * it under the terms of the GNU Lesser General Public Licence as published by
7  * the Free Software Foundation, either version 3 of the Licence, or
8  * (at your option) any later version.
9  *
10  * WinBtrfs is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU Lesser General Public Licence for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public Licence
16  * along with WinBtrfs. If not, see <http://www.gnu.org/licenses/>. */
17 
18 #include "btrfs_drv.h"
19 #include <mountdev.h>
20 #include <ntddvol.h>
21 #include <ntddstor.h>
22 #include <ntdddisk.h>
23 #include <wdmguid.h>
24 
25 #define IOCTL_VOLUME_IS_DYNAMIC CTL_CODE(IOCTL_VOLUME_BASE, 18, METHOD_BUFFERED, FILE_ANY_ACCESS)
26 #define IOCTL_VOLUME_POST_ONLINE CTL_CODE(IOCTL_VOLUME_BASE, 25, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
27 
28 extern PDRIVER_OBJECT drvobj;
30 extern PDEVICE_OBJECT busobj;
32 extern LIST_ENTRY pdo_list;
35 
37  volume_device_extension* vde = DeviceObject->DeviceExtension;
38 
39  TRACE("(%p, %p)\n", DeviceObject, Irp);
40 
41  if (vde->removing)
43 
44  Irp->IoStatus.Information = FILE_OPENED;
46 
47  return STATUS_SUCCESS;
48 }
49 
51  PDEVICE_OBJECT pdo;
52 
53  vde->dead = true;
54 
55  if (vde->mounted_device) {
57 
58  Vcb->vde = NULL;
59  }
60 
61  if (vde->name.Buffer)
62  ExFreePool(vde->name.Buffer);
63 
64  ExDeleteResourceLite(&vde->pdode->child_lock);
65 
66  if (vde->pdo->AttachedDevice)
67  IoDetachDevice(vde->pdo);
68 
69  while (!IsListEmpty(&vde->pdode->children)) {
71 
72  if (vc->notification_entry) {
75  else
77  }
78 
79  if (vc->pnp_name.Buffer)
81 
82  ExFreePool(vc);
83  }
84 
85  if (no_pnp)
86  ExFreePool(vde->pdode);
87 
88  pdo = vde->pdo;
89  IoDeleteDevice(vde->device);
90 
91  if (!no_pnp)
92  IoDeleteDevice(pdo);
93 }
94 
96  volume_device_extension* vde = DeviceObject->DeviceExtension;
97  pdo_device_extension* pdode = vde->pdode;
98 
99  TRACE("(%p, %p)\n", DeviceObject, Irp);
100 
101  Irp->IoStatus.Information = 0;
102 
103  if (vde->dead)
104  return STATUS_SUCCESS;
105 
107 
108  if (vde->dead) {
110  return STATUS_SUCCESS;
111  }
112 
114 
115  if (InterlockedDecrement(&vde->open_count) == 0 && vde->removing) {
117 
118  free_vol(vde);
119  } else
121 
123 
124  return STATUS_SUCCESS;
125 }
126 
127 typedef struct {
131 
132 _Function_class_(IO_COMPLETION_ROUTINE)
133 static NTSTATUS __stdcall vol_read_completion(PDEVICE_OBJECT DeviceObject, PIRP Irp, PVOID conptr) {
134  vol_read_context* context = conptr;
135 
137 
138  context->iosb = Irp->IoStatus;
139  KeSetEvent(&context->Event, 0, false);
140 
142 }
143 
145  volume_device_extension* vde = DeviceObject->DeviceExtension;
146  pdo_device_extension* pdode = vde->pdode;
147  volume_child* vc;
149  PIRP Irp2;
151  PIO_STACK_LOCATION IrpSp, IrpSp2;
152 
153  TRACE("(%p, %p)\n", DeviceObject, Irp);
154 
156 
157  if (IsListEmpty(&pdode->children)) {
160  goto end;
161  }
162 
164 
165  // We can't use IoSkipCurrentIrpStackLocation as the device isn't in our stack
166 
167  Irp2 = IoAllocateIrp(vc->devobj->StackSize, false);
168 
169  if (!Irp2) {
170  ERR("IoAllocateIrp failed\n");
173  goto end;
174  }
175 
177  IrpSp2 = IoGetNextIrpStackLocation(Irp2);
178 
179  IrpSp2->MajorFunction = IRP_MJ_READ;
180  IrpSp2->FileObject = vc->fileobj;
181 
182  if (vc->devobj->Flags & DO_BUFFERED_IO) {
183  Irp2->AssociatedIrp.SystemBuffer = ExAllocatePoolWithTag(NonPagedPool, IrpSp->Parameters.Read.Length, ALLOC_TAG);
184  if (!Irp2->AssociatedIrp.SystemBuffer) {
185  ERR("out of memory\n");
188  goto end;
189  }
190 
192 
193  Irp2->UserBuffer = MmGetSystemAddressForMdlSafe(Irp->MdlAddress, NormalPagePriority);
194  } else if (vc->devobj->Flags & DO_DIRECT_IO)
195  Irp2->MdlAddress = Irp->MdlAddress;
196  else
197  Irp2->UserBuffer = MmGetSystemAddressForMdlSafe(Irp->MdlAddress, NormalPagePriority);
198 
199  IrpSp2->Parameters.Read.Length = IrpSp->Parameters.Read.Length;
200  IrpSp2->Parameters.Read.ByteOffset.QuadPart = IrpSp->Parameters.Read.ByteOffset.QuadPart;
201 
203  Irp2->UserIosb = &context.iosb;
204 
205  IoSetCompletionRoutine(Irp2, vol_read_completion, &context, true, true, true);
206 
207  Status = IoCallDriver(vc->devobj, Irp2);
208 
209  if (Status == STATUS_PENDING) {
211  Status = context.iosb.Status;
212  }
213 
215 
216  Irp->IoStatus.Information = context.iosb.Information;
217 
218 end:
219  Irp->IoStatus.Status = Status;
221 
222  return Status;
223 }
224 
226  volume_device_extension* vde = DeviceObject->DeviceExtension;
227  pdo_device_extension* pdode = vde->pdode;
228  volume_child* vc;
230  PIRP Irp2;
232  PIO_STACK_LOCATION IrpSp, IrpSp2;
233 
234  TRACE("(%p, %p)\n", DeviceObject, Irp);
235 
237 
238  if (IsListEmpty(&pdode->children)) {
241  goto end;
242  }
243 
245 
246  if (vc->list_entry.Flink != &pdode->children) { // more than once device
249  goto end;
250  }
251 
252  // We can't use IoSkipCurrentIrpStackLocation as the device isn't in our stack
253 
254  Irp2 = IoAllocateIrp(vc->devobj->StackSize, false);
255 
256  if (!Irp2) {
257  ERR("IoAllocateIrp failed\n");
260  goto end;
261  }
262 
264  IrpSp2 = IoGetNextIrpStackLocation(Irp2);
265 
266  IrpSp2->MajorFunction = IRP_MJ_WRITE;
267  IrpSp2->FileObject = vc->fileobj;
268 
269  if (vc->devobj->Flags & DO_BUFFERED_IO) {
270  Irp2->AssociatedIrp.SystemBuffer = MmGetSystemAddressForMdlSafe(Irp->MdlAddress, NormalPagePriority);
271 
272  Irp2->Flags |= IRP_BUFFERED_IO;
273 
274  Irp2->UserBuffer = MmGetSystemAddressForMdlSafe(Irp->MdlAddress, NormalPagePriority);
275  } else if (vc->devobj->Flags & DO_DIRECT_IO)
276  Irp2->MdlAddress = Irp->MdlAddress;
277  else
278  Irp2->UserBuffer = MmGetSystemAddressForMdlSafe(Irp->MdlAddress, NormalPagePriority);
279 
280  IrpSp2->Parameters.Write.Length = IrpSp->Parameters.Write.Length;
281  IrpSp2->Parameters.Write.ByteOffset.QuadPart = IrpSp->Parameters.Write.ByteOffset.QuadPart;
282 
284  Irp2->UserIosb = &context.iosb;
285 
286  IoSetCompletionRoutine(Irp2, vol_read_completion, &context, true, true, true);
287 
288  Status = IoCallDriver(vc->devobj, Irp2);
289 
290  if (Status == STATUS_PENDING) {
292  Status = context.iosb.Status;
293  }
294 
296 
297  Irp->IoStatus.Information = context.iosb.Information;
298 
299 end:
300  Irp->IoStatus.Status = Status;
302 
303  return Status;
304 }
305 
309 
310  if (IrpSp->FileObject && IrpSp->FileObject->FsContext)
312 
313  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(MOUNTDEV_NAME)) {
314  Irp->IoStatus.Information = sizeof(MOUNTDEV_NAME);
316  }
317 
318  name = Irp->AssociatedIrp.SystemBuffer;
319  name->NameLength = vde->name.Length;
320 
321  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < offsetof(MOUNTDEV_NAME, Name[0]) + name->NameLength) {
322  Irp->IoStatus.Information = sizeof(MOUNTDEV_NAME);
323  return STATUS_BUFFER_OVERFLOW;
324  }
325 
326  RtlCopyMemory(name->Name, vde->name.Buffer, vde->name.Length);
327 
328  Irp->IoStatus.Information = offsetof(MOUNTDEV_NAME, Name[0]) + name->NameLength;
329 
330  return STATUS_SUCCESS;
331 }
332 
335  MOUNTDEV_UNIQUE_ID* mduid;
336  pdo_device_extension* pdode;
337 
338  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(MOUNTDEV_UNIQUE_ID)) {
339  Irp->IoStatus.Information = sizeof(MOUNTDEV_UNIQUE_ID);
341  }
342 
343  mduid = Irp->AssociatedIrp.SystemBuffer;
344  mduid->UniqueIdLength = sizeof(BTRFS_UUID);
345 
346  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < offsetof(MOUNTDEV_UNIQUE_ID, UniqueId[0]) + mduid->UniqueIdLength) {
347  Irp->IoStatus.Information = sizeof(MOUNTDEV_UNIQUE_ID);
348  return STATUS_BUFFER_OVERFLOW;
349  }
350 
351  if (!vde->pdo)
353 
354  pdode = vde->pdode;
355 
356  RtlCopyMemory(mduid->UniqueId, &pdode->uuid, sizeof(BTRFS_UUID));
357 
358  Irp->IoStatus.Information = offsetof(MOUNTDEV_UNIQUE_ID, UniqueId[0]) + mduid->UniqueIdLength;
359 
360  return STATUS_SUCCESS;
361 }
362 
365  uint8_t* buf;
366 
367  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength == 0 || !Irp->AssociatedIrp.SystemBuffer)
369 
370  buf = (uint8_t*)Irp->AssociatedIrp.SystemBuffer;
371 
372  *buf = 1;
373 
374  Irp->IoStatus.Information = 1;
375 
376  return STATUS_SUCCESS;
377 }
378 
380  pdo_device_extension* pdode = vde->pdode;
382  LIST_ENTRY* le;
383 
385 
386  le = pdode->children.Flink;
387  while (le != &pdode->children) {
389 
391  if (!NT_SUCCESS(Status))
392  goto end;
393 
394  le = le->Flink;
395  }
396 
398 
399 end:
401 
402  return Status;
403 }
404 
406  pdo_device_extension* pdode = vde->pdode;
408  LIST_ENTRY* le;
409  ULONG num_extents = 0, i, max_extents = 1;
412 
413  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(VOLUME_DISK_EXTENTS))
415 
417 
418  le = pdode->children.Flink;
419  while (le != &pdode->children) {
422 
425  ERR("IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS returned %08lx\n", Status);
426  goto end;
427  }
428 
429  num_extents += ext2.NumberOfDiskExtents;
430 
431  if (ext2.NumberOfDiskExtents > max_extents)
432  max_extents = ext2.NumberOfDiskExtents;
433 
434  le = le->Flink;
435  }
436 
437  ext = Irp->AssociatedIrp.SystemBuffer;
438 
439  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < offsetof(VOLUME_DISK_EXTENTS, Extents[0]) + (num_extents * sizeof(DISK_EXTENT))) {
440  Irp->IoStatus.Information = offsetof(VOLUME_DISK_EXTENTS, Extents[0]);
441  ext->NumberOfDiskExtents = num_extents;
443  goto end;
444  }
445 
446  ext3 = ExAllocatePoolWithTag(PagedPool, offsetof(VOLUME_DISK_EXTENTS, Extents[0]) + (max_extents * sizeof(DISK_EXTENT)), ALLOC_TAG);
447  if (!ext3) {
448  ERR("out of memory\n");
450  goto end;
451  }
452 
453  i = 0;
454  ext->NumberOfDiskExtents = 0;
455 
456  le = pdode->children.Flink;
457  while (le != &pdode->children) {
459 
461  (ULONG)offsetof(VOLUME_DISK_EXTENTS, Extents[0]) + (max_extents * sizeof(DISK_EXTENT)), false, NULL);
462  if (!NT_SUCCESS(Status)) {
463  ERR("IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS returned %08lx\n", Status);
464  ExFreePool(ext3);
465  goto end;
466  }
467 
468  if (i + ext3->NumberOfDiskExtents > num_extents) {
469  Irp->IoStatus.Information = offsetof(VOLUME_DISK_EXTENTS, Extents[0]);
470  ext->NumberOfDiskExtents = i + ext3->NumberOfDiskExtents;
472  ExFreePool(ext3);
473  goto end;
474  }
475 
476  RtlCopyMemory(&ext->Extents[i], ext3->Extents, sizeof(DISK_EXTENT) * ext3->NumberOfDiskExtents);
477  i += ext3->NumberOfDiskExtents;
478 
479  le = le->Flink;
480  }
481 
482  ExFreePool(ext3);
483 
485 
486  ext->NumberOfDiskExtents = i;
487  Irp->IoStatus.Information = offsetof(VOLUME_DISK_EXTENTS, Extents[0]) + (i * sizeof(DISK_EXTENT));
488 
489 end:
491 
492  return Status;
493 }
494 
496  pdo_device_extension* pdode = vde->pdode;
498  LIST_ENTRY* le;
499  bool writable = false;
500 
502 
503  le = pdode->children.Flink;
504  while (le != &pdode->children) {
506 
507  Status = dev_ioctl(vc->devobj, IOCTL_DISK_IS_WRITABLE, NULL, 0, NULL, 0, true, NULL);
508 
509  if (NT_SUCCESS(Status)) {
510  writable = true;
511  break;
512  } else if (Status != STATUS_MEDIA_WRITE_PROTECTED)
513  goto end;
514 
515  le = le->Flink;
516  }
517 
519 
520 end:
522 
523  return STATUS_SUCCESS;
524 }
525 
528  pdo_device_extension* pdode = vde->pdode;
530  LIST_ENTRY* le;
531 
532  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(GET_LENGTH_INFORMATION))
534 
535  gli = (GET_LENGTH_INFORMATION*)Irp->AssociatedIrp.SystemBuffer;
536 
537  gli->Length.QuadPart = 0;
538 
540 
541  le = pdode->children.Flink;
542  while (le != &pdode->children) {
544 
545  gli->Length.QuadPart += vc->size;
546 
547  le = le->Flink;
548  }
549 
551 
552  Irp->IoStatus.Information = sizeof(GET_LENGTH_INFORMATION);
553 
554  return STATUS_SUCCESS;
555 }
556 
558  volume_device_extension* vde = DeviceObject->DeviceExtension;
559  pdo_device_extension* pdode = vde->pdode;
561  DISK_GEOMETRY* geom;
563  LIST_ENTRY* le;
564 
565  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(DISK_GEOMETRY))
567 
568  length = 0;
569 
571 
572  le = pdode->children.Flink;
573  while (le != &pdode->children) {
575 
576  length += vc->size;
577 
578  le = le->Flink;
579  }
580 
582 
583  geom = (DISK_GEOMETRY*)Irp->AssociatedIrp.SystemBuffer;
584  geom->BytesPerSector = DeviceObject->SectorSize == 0 ? 0x200 : DeviceObject->SectorSize;
585  geom->SectorsPerTrack = 0x3f;
586  geom->TracksPerCylinder = 0xff;
589 
590  Irp->IoStatus.Information = sizeof(DISK_GEOMETRY);
591 
592  return STATUS_SUCCESS;
593 }
594 
598 
599  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(VOLUME_GET_GPT_ATTRIBUTES_INFORMATION))
601 
602  vggai = (VOLUME_GET_GPT_ATTRIBUTES_INFORMATION*)Irp->AssociatedIrp.SystemBuffer;
603 
604  vggai->GptAttributes = 0;
605 
606  Irp->IoStatus.Information = sizeof(VOLUME_GET_GPT_ATTRIBUTES_INFORMATION);
607 
608  return STATUS_SUCCESS;
609 }
610 
612  pdo_device_extension* pdode = vde->pdode;
614  volume_child* vc;
616 
617  // If only one device, return its disk number. This is needed for ejection to work.
618 
619  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(STORAGE_DEVICE_NUMBER))
621 
623 
624  if (IsListEmpty(&pdode->children) || pdode->num_children > 1) {
627  }
628 
630 
631  if (vc->disk_num == 0xffffffff) {
634  }
635 
636  sdn = (STORAGE_DEVICE_NUMBER*)Irp->AssociatedIrp.SystemBuffer;
637 
639  sdn->DeviceNumber = vc->disk_num;
640  sdn->PartitionNumber = vc->part_num;
641 
643 
644  Irp->IoStatus.Information = sizeof(STORAGE_DEVICE_NUMBER);
645 
646  return STATUS_SUCCESS;
647 }
648 
649 _Function_class_(IO_COMPLETION_ROUTINE)
650 static NTSTATUS __stdcall vol_ioctl_completion(PDEVICE_OBJECT DeviceObject, PIRP Irp, PVOID conptr) {
651  KEVENT* event = conptr;
652 
654  UNUSED(Irp);
655 
656  KeSetEvent(event, 0, false);
657 
659 }
660 
663  volume_child* vc;
664  PIRP Irp2;
665  PIO_STACK_LOCATION IrpSp, IrpSp2;
666  KEVENT Event;
667  pdo_device_extension* pdode = vde->pdode;
668 
669  TRACE("(%p, %p)\n", vde, Irp);
670 
672 
673  if (IsListEmpty(&pdode->children)) {
676  }
677 
679 
680  if (vc->list_entry.Flink != &pdode->children) { // more than one device
683  }
684 
685  Irp2 = IoAllocateIrp(vc->devobj->StackSize, false);
686 
687  if (!Irp2) {
688  ERR("IoAllocateIrp failed\n");
691  }
692 
694  IrpSp2 = IoGetNextIrpStackLocation(Irp2);
695 
696  IrpSp2->MajorFunction = IrpSp->MajorFunction;
697  IrpSp2->MinorFunction = IrpSp->MinorFunction;
698  IrpSp2->FileObject = vc->fileobj;
699 
700  IrpSp2->Parameters.DeviceIoControl.OutputBufferLength = IrpSp->Parameters.DeviceIoControl.OutputBufferLength;
701  IrpSp2->Parameters.DeviceIoControl.InputBufferLength = IrpSp->Parameters.DeviceIoControl.InputBufferLength;
702  IrpSp2->Parameters.DeviceIoControl.IoControlCode = IrpSp->Parameters.DeviceIoControl.IoControlCode;
703  IrpSp2->Parameters.DeviceIoControl.Type3InputBuffer = IrpSp->Parameters.DeviceIoControl.Type3InputBuffer;
704 
705  Irp2->AssociatedIrp.SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
706  Irp2->MdlAddress = Irp->MdlAddress;
707  Irp2->UserBuffer = Irp->UserBuffer;
708  Irp2->Flags = Irp->Flags;
709 
711 
712  IoSetCompletionRoutine(Irp2, vol_ioctl_completion, &Event, true, true, true);
713 
714  Status = IoCallDriver(vc->devobj, Irp2);
715 
716  if (Status == STATUS_PENDING) {
718  Status = Irp2->IoStatus.Status;
719  }
720 
721  Irp->IoStatus.Status = Irp2->IoStatus.Status;
722  Irp->IoStatus.Information = Irp2->IoStatus.Information;
723 
725 
726  IoFreeIrp(Irp2);
727 
728  return Status;
729 }
730 
733  MOUNTDEV_STABLE_GUID* mdsg;
734  pdo_device_extension* pdode;
735 
736  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(MOUNTDEV_STABLE_GUID)) {
737  Irp->IoStatus.Information = sizeof(MOUNTDEV_STABLE_GUID);
739  }
740 
741  mdsg = Irp->AssociatedIrp.SystemBuffer;
742 
743  if (!vde->pdo)
745 
746  pdode = vde->pdode;
747 
748  RtlCopyMemory(&mdsg->StableGuid, &pdode->uuid, sizeof(BTRFS_UUID));
749 
750  Irp->IoStatus.Information = sizeof(MOUNTDEV_STABLE_GUID);
751 
752  return STATUS_SUCCESS;
753 }
754 
756  volume_device_extension* vde = DeviceObject->DeviceExtension;
758 
759  TRACE("(%p, %p)\n", DeviceObject, Irp);
760 
761  Irp->IoStatus.Information = 0;
762 
763  switch (IrpSp->Parameters.DeviceIoControl.IoControlCode) {
765  return vol_query_device_name(vde, Irp);
766 
768  return vol_query_unique_id(vde, Irp);
769 
771  return vol_get_device_number(vde, Irp);
772 
774  TRACE("unhandled control code IOCTL_MOUNTDEV_QUERY_SUGGESTED_LINK_NAME\n");
775  break;
776 
778  return vol_query_stable_guid(vde, Irp);
779 
781  TRACE("unhandled control code IOCTL_MOUNTDEV_LINK_CREATED\n");
782  break;
783 
785  return vol_get_gpt_attributes(Irp);
786 
788  return vol_is_dynamic(Irp);
789 
790  case IOCTL_VOLUME_ONLINE:
791  Irp->IoStatus.Information = 0;
792  return STATUS_SUCCESS;
793 
795  Irp->IoStatus.Information = 0;
796  return STATUS_SUCCESS;
797 
800 
802  return vol_is_writable(vde);
803 
805  return vol_get_length(vde, Irp);
806 
809  return vol_check_verify(vde);
810 
812  return vol_get_disk_extents(vde, Irp);
813 
814  default: { // pass ioctl through if only one child device
816 #ifdef _DEBUG
817  ULONG code = IrpSp->Parameters.DeviceIoControl.IoControlCode;
818 
819  if (NT_SUCCESS(Status))
820  TRACE("passing through ioctl %lx (returning %08lx)\n", code, Status);
821  else
822  WARN("passing through ioctl %lx (returning %08lx)\n", code, Status);
823 #endif
824 
825  return Status;
826  }
827  }
828 
830 }
831 
834  ULONG mmdltsize;
837 
838  mmdltsize = (ULONG)offsetof(MOUNTMGR_DRIVE_LETTER_TARGET, DeviceName[0]) + devpath->Length;
839 
840  mmdlt = ExAllocatePoolWithTag(NonPagedPool, mmdltsize, ALLOC_TAG);
841  if (!mmdlt) {
842  ERR("out of memory\n");
844  }
845 
846  mmdlt->DeviceNameLength = devpath->Length;
847  RtlCopyMemory(&mmdlt->DeviceName, devpath->Buffer, devpath->Length);
848  TRACE("mmdlt = %.*S\n", (int)(mmdlt->DeviceNameLength / sizeof(WCHAR)), mmdlt->DeviceName);
849 
851 
852  if (!NT_SUCCESS(Status))
853  ERR("IOCTL_MOUNTMGR_NEXT_DRIVE_LETTER returned %08lx\n", Status);
854  else
855  TRACE("DriveLetterWasAssigned = %u, CurrentDriveLetter = %c\n", mmdli.DriveLetterWasAssigned, mmdli.CurrentDriveLetter);
856 
857  ExFreePool(mmdlt);
858 
859  return Status;
860 }
861 
862 _Function_class_(DRIVER_NOTIFICATION_CALLBACK_ROUTINE)
866 
867  if (RtlCompareMemory(&tdrn->Event, &GUID_TARGET_DEVICE_QUERY_REMOVE, sizeof(GUID)) == sizeof(GUID)) {
868  TRACE("GUID_TARGET_DEVICE_QUERY_REMOVE\n");
869 
870  if (pdode->vde && pdode->vde->mounted_device)
872  }
873 
874  return STATUS_SUCCESS;
875 }
876 
878  HANDLE h;
881  UNICODE_STRING path, adus;
882  uint32_t degraded = mount_allow_degraded;
883  ULONG i, j, kvfilen, retlen;
885 
886  path.Length = path.MaximumLength = registry_path.Length + (37 * sizeof(WCHAR));
888 
889  if (!path.Buffer) {
890  ERR("out of memory\n");
891  return false;
892  }
893 
895  i = registry_path.Length / sizeof(WCHAR);
896 
897  path.Buffer[i] = '\\';
898  i++;
899 
900  for (j = 0; j < 16; j++) {
901  path.Buffer[i] = hex_digit((uuid->uuid[j] & 0xF0) >> 4);
902  path.Buffer[i+1] = hex_digit(uuid->uuid[j] & 0xF);
903 
904  i += 2;
905 
906  if (j == 3 || j == 5 || j == 7 || j == 9) {
907  path.Buffer[i] = '-';
908  i++;
909  }
910  }
911 
913 
914  kvfilen = (ULONG)offsetof(KEY_VALUE_FULL_INFORMATION, Name[0]) + (255 * sizeof(WCHAR));
915  kvfi = ExAllocatePoolWithTag(PagedPool, kvfilen, ALLOC_TAG);
916  if (!kvfi) {
917  ERR("out of memory\n");
918  ExFreePool(path.Buffer);
919  return false;
920  }
921 
922  Status = ZwOpenKey(&h, KEY_QUERY_VALUE, &oa);
924  goto end;
925  else if (!NT_SUCCESS(Status)) {
926  ERR("ZwOpenKey returned %08lx\n", Status);
927  goto end;
928  }
929 
930  adus.Buffer = L"AllowDegraded";
931  adus.Length = adus.MaximumLength = sizeof(adus.Buffer) - sizeof(WCHAR);
932 
933  if (NT_SUCCESS(ZwQueryValueKey(h, &adus, KeyValueFullInformation, kvfi, kvfilen, &retlen))) {
934  if (kvfi->Type == REG_DWORD && kvfi->DataLength >= sizeof(uint32_t)) {
935  uint32_t* val = (uint32_t*)((uint8_t*)kvfi + kvfi->DataOffset);
936 
937  degraded = *val;
938  }
939  }
940 
941  ZwClose(h);
942 
943 end:
944  ExFreePool(kvfi);
945 
946  ExFreePool(path.Buffer);
947 
948  return degraded;
949 }
950 
951 typedef struct {
957 
959  LIST_ENTRY* le;
960  LIST_ENTRY dlrlist;
961 
962  InitializeListHead(&dlrlist);
963 
965 
966  le = pdode->children.Flink;
967 
968  while (le != &pdode->children) {
970 
972 
974  if (!dlr) {
975  ERR("out of memory\n");
976 
977  while (!IsListEmpty(&dlrlist)) {
979 
980  ExFreePool(dlr->name.Buffer);
981  ExFreePool(dlr);
982  }
983 
985  return;
986  }
987 
988  dlr->name.Length = dlr->name.MaximumLength = vc->pnp_name.Length + (3 * sizeof(WCHAR));
990 
991  if (!dlr->name.Buffer) {
992  ERR("out of memory\n");
993 
994  ExFreePool(dlr);
995 
996  while (!IsListEmpty(&dlrlist)) {
998 
999  ExFreePool(dlr->name.Buffer);
1000  ExFreePool(dlr);
1001  }
1002 
1004  return;
1005  }
1006 
1007  RtlCopyMemory(dlr->name.Buffer, L"\\??", 3 * sizeof(WCHAR));
1008  RtlCopyMemory(&dlr->name.Buffer[3], vc->pnp_name.Buffer, vc->pnp_name.Length);
1009 
1010  dlr->uuid = vc->uuid;
1011 
1012  InsertTailList(&dlrlist, &dlr->list_entry);
1013 
1014  le = le->Flink;
1015  }
1016 
1018 
1019  le = dlrlist.Flink;
1020  while (le != &dlrlist) {
1022 
1023  dlr->Status = remove_drive_letter(mountmgr, &dlr->name);
1024 
1025  if (!NT_SUCCESS(dlr->Status) && dlr->Status != STATUS_NOT_FOUND)
1026  WARN("remove_drive_letter returned %08lx\n", dlr->Status);
1027 
1028  le = le->Flink;
1029  }
1030 
1031  // set vc->had_drive_letter
1032 
1034 
1035  while (!IsListEmpty(&dlrlist)) {
1037 
1038  le = pdode->children.Flink;
1039 
1040  while (le != &pdode->children) {
1042 
1043  if (RtlCompareMemory(&vc->uuid, &dlr->uuid, sizeof(BTRFS_UUID)) == sizeof(BTRFS_UUID)) {
1044  vc->had_drive_letter = NT_SUCCESS(dlr->Status);
1045  break;
1046  }
1047 
1048  le = le->Flink;
1049  }
1050 
1051  ExFreePool(dlr->name.Buffer);
1052  ExFreePool(dlr);
1053  }
1054 
1056 }
1057 
1058 _Function_class_(IO_WORKITEM_ROUTINE)
1059 static void __stdcall drive_letter_callback(pdo_device_extension* pdode) {
1060  NTSTATUS Status;
1061  UNICODE_STRING mmdevpath;
1063  PFILE_OBJECT mountmgrfo;
1064 
1066  Status = IoGetDeviceObjectPointer(&mmdevpath, FILE_READ_ATTRIBUTES, &mountmgrfo, &mountmgr);
1067  if (!NT_SUCCESS(Status)) {
1068  ERR("IoGetDeviceObjectPointer returned %08lx\n", Status);
1069  return;
1070  }
1071 
1073 
1074  ObDereferenceObject(mountmgrfo);
1075 }
1076 
1078  NTSTATUS Status;
1079  LIST_ENTRY* le;
1081  volume_child* vc;
1083  UNICODE_STRING devpath2;
1084  bool inserted = false, new_pdo = false;
1085  pdo_device_extension* pdode = NULL;
1086  PDEVICE_OBJECT pdo = NULL;
1087  bool process_drive_letters = false;
1088 
1089  if (devpath->Length == 0)
1090  return;
1091 
1093 
1094  le = pdo_list.Flink;
1095  while (le != &pdo_list) {
1097 
1098  if (RtlCompareMemory(&pdode2->uuid, &sb->uuid, sizeof(BTRFS_UUID)) == sizeof(BTRFS_UUID)) {
1099  pdode = pdode2;
1100  break;
1101  }
1102 
1103  le = le->Flink;
1104  }
1105 
1107  if (!NT_SUCCESS(Status)) {
1108  ERR("IoGetDeviceObjectPointer returned %08lx\n", Status);
1110  return;
1111  }
1112 
1113  if (!pdode) {
1114  if (no_pnp) {
1115  Status = IoReportDetectedDevice(drvobj, InterfaceTypeUndefined, 0xFFFFFFFF, 0xFFFFFFFF, NULL, NULL, 0, &pdo);
1116 
1117  if (!NT_SUCCESS(Status)) {
1118  ERR("IoReportDetectedDevice returned %08lx\n", Status);
1120  return;
1121  }
1122 
1124 
1125  if (!pdode) {
1126  ERR("out of memory\n");
1128  return;
1129  }
1130  } else {
1133  if (!NT_SUCCESS(Status)) {
1134  ERR("IoCreateDevice returned %08lx\n", Status);
1136  goto fail;
1137  }
1138 
1140 
1141  pdode = pdo->DeviceExtension;
1142  }
1143 
1144  RtlZeroMemory(pdode, sizeof(pdo_device_extension));
1145 
1146  pdode->type = VCB_TYPE_PDO;
1147  pdode->pdo = pdo;
1148  pdode->uuid = sb->uuid;
1149 
1151  InitializeListHead(&pdode->children);
1152  pdode->num_children = sb->num_devices;
1153  pdode->children_loaded = 0;
1154 
1155  pdo->Flags &= ~DO_DEVICE_INITIALIZING;
1156  pdo->SectorSize = (USHORT)sb->sector_size;
1157 
1159 
1160  new_pdo = true;
1161  } else {
1164 
1165  le = pdode->children.Flink;
1166  while (le != &pdode->children) {
1168 
1169  if (RtlCompareMemory(&vc2->uuid, &sb->dev_item.device_uuid, sizeof(BTRFS_UUID)) == sizeof(BTRFS_UUID)) {
1170  // duplicate, ignore
1173  goto fail;
1174  }
1175 
1176  le = le->Flink;
1177  }
1178  }
1179 
1181  if (!vc) {
1182  ERR("out of memory\n");
1183 
1186 
1187  goto fail;
1188  }
1189 
1190  vc->uuid = sb->dev_item.device_uuid;
1191  vc->devid = sb->dev_item.dev_id;
1192  vc->generation = sb->generation;
1193  vc->notification_entry = NULL;
1194  vc->boot_volume = false;
1195 
1197  drvobj, pnp_removal, pdode, &vc->notification_entry);
1198  if (!NT_SUCCESS(Status))
1199  WARN("IoRegisterPlugPlayNotification returned %08lx\n", Status);
1200 
1201  vc->devobj = DeviceObject;
1202  vc->fileobj = FileObject;
1203 
1204  devpath2 = *devpath;
1205 
1206  // The PNP path sometimes begins \\?\ and sometimes \??\. We need to remove this prefix
1207  // so we can compare properly if the device is removed.
1208  if (devpath->Length > 4 * sizeof(WCHAR) && devpath->Buffer[0] == '\\' && (devpath->Buffer[1] == '\\' || devpath->Buffer[1] == '?') &&
1209  devpath->Buffer[2] == '?' && devpath->Buffer[3] == '\\') {
1210  devpath2.Buffer = &devpath2.Buffer[3];
1211  devpath2.Length -= 3 * sizeof(WCHAR);
1212  devpath2.MaximumLength -= 3 * sizeof(WCHAR);
1213  }
1214 
1215  vc->pnp_name.Length = vc->pnp_name.MaximumLength = devpath2.Length;
1217 
1218  if (vc->pnp_name.Buffer)
1219  RtlCopyMemory(vc->pnp_name.Buffer, devpath2.Buffer, devpath2.Length);
1220  else {
1221  ERR("out of memory\n");
1222  vc->pnp_name.Length = vc->pnp_name.MaximumLength = 0;
1223  }
1224 
1225  vc->size = length;
1226  vc->seeding = sb->flags & BTRFS_SUPERBLOCK_FLAGS_SEEDING ? true : false;
1227  vc->disk_num = disk_num;
1228  vc->part_num = part_num;
1229  vc->had_drive_letter = false;
1230 
1231  le = pdode->children.Flink;
1232  while (le != &pdode->children) {
1234 
1235  if (vc2->generation < vc->generation) {
1236  if (le == pdode->children.Flink)
1237  pdode->num_children = sb->num_devices;
1238 
1240  inserted = true;
1241  break;
1242  }
1243 
1244  le = le->Flink;
1245  }
1246 
1247  if (!inserted)
1248  InsertTailList(&pdode->children, &vc->list_entry);
1249 
1250  pdode->children_loaded++;
1251 
1252  if (pdode->vde && pdode->vde->mounted_device) {
1254 
1255  ExAcquireResourceExclusiveLite(&Vcb->tree_lock, true);
1256 
1257  le = Vcb->devices.Flink;
1258  while (le != &Vcb->devices) {
1260 
1261  if (!dev->devobj && RtlCompareMemory(&dev->devitem.device_uuid, &sb->dev_item.device_uuid, sizeof(BTRFS_UUID)) == sizeof(BTRFS_UUID)) {
1262  dev->devobj = DeviceObject;
1263  dev->disk_num = disk_num;
1264  dev->part_num = part_num;
1265  init_device(Vcb, dev, false);
1266  break;
1267  }
1268 
1269  le = le->Flink;
1270  }
1271 
1272  ExReleaseResourceLite(&Vcb->tree_lock);
1273  }
1274 
1275  if (DeviceObject->Characteristics & FILE_REMOVABLE_MEDIA) {
1276  pdode->removable = true;
1277 
1278  if (pdode->vde && pdode->vde->device)
1279  pdode->vde->device->Characteristics |= FILE_REMOVABLE_MEDIA;
1280  }
1281 
1282  if (pdode->num_children == pdode->children_loaded || (pdode->children_loaded == 1 && allow_degraded_mount(&sb->uuid))) {
1283  if ((!new_pdo || !no_pnp) && pdode->vde) {
1284  Status = IoSetDeviceInterfaceState(&pdode->vde->bus_name, true);
1285  if (!NT_SUCCESS(Status))
1286  WARN("IoSetDeviceInterfaceState returned %08lx\n", Status);
1287  }
1288 
1289  process_drive_letters = true;
1290  }
1291 
1293 
1294  if (new_pdo)
1295  InsertTailList(&pdo_list, &pdode->list_entry);
1296 
1298 
1299  if (process_drive_letters)
1300  drive_letter_callback(pdode);
1301 
1302  if (new_pdo) {
1303  if (RtlCompareMemory(&sb->uuid, &boot_uuid, sizeof(BTRFS_UUID)) == sizeof(BTRFS_UUID))
1304  boot_add_device(pdo);
1305  else if (no_pnp)
1306  AddDevice(drvobj, pdo);
1307  else {
1310  }
1311  }
1312 
1313  return;
1314 
1315 fail:
1317 }
DEVICE_TYPE DeviceType
Definition: ntddstor.h:324
#define DO_DEVICE_INITIALIZING
Definition: env_spec_w32.h:399
_In_ PVOID NotificationStructure
Definition: iofuncs.h:1206
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#define BTRFS_SUPERBLOCK_FLAGS_SEEDING
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struct _LIST_ENTRY * Blink
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KEVENT Event
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#define DO_BUFFERED_IO
Definition: env_spec_w32.h:394
NTSTATUS dev_ioctl(_In_ PDEVICE_OBJECT DeviceObject, _In_ ULONG ControlCode, _In_reads_bytes_opt_(InputBufferSize) PVOID InputBuffer, _In_ ULONG InputBufferSize, _Out_writes_bytes_opt_(OutputBufferSize) PVOID OutputBuffer, _In_ ULONG OutputBufferSize, _In_ bool Override, _Out_opt_ IO_STATUS_BLOCK *iosb)
Definition: btrfs.c:2923
ULONG SectorsPerTrack
Definition: ntdddisk.h:408
bool had_drive_letter
Definition: btrfs_drv.h:854
#define Vcb
Definition: cdprocs.h:1415
NTSTATUS vol_read(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:144
#define ObDereferenceObject
Definition: obfuncs.h:203
LIST_ENTRY list_entry
Definition: btrfs_drv.h:891
static NTSTATUS vol_ioctl_passthrough(volume_device_extension *vde, PIRP Irp)
Definition: volume.c:661
MEDIA_TYPE MediaType
Definition: ntdddisk.h:406
#define STATUS_ACCESS_DENIED
Definition: udferr_usr.h:145
#define __stdcall
Definition: typedefs.h:25
Definition: stddef.h:6
static NTSTATUS vol_get_device_number(volume_device_extension *vde, PIRP Irp)
Definition: volume.c:611
ERESOURCE child_lock
Definition: btrfs_drv.h:888
VOID FASTCALL ExReleaseResourceLite(IN PERESOURCE Resource)
Definition: resource.c:1817
void * notification_entry
Definition: btrfs_drv.h:855
PDEVICE_OBJECT mounted_device
Definition: btrfs_drv.h:868
* PFILE_OBJECT
Definition: iotypes.h:1998
ULONG disk_num
Definition: btrfs_drv.h:856
_In_opt_ PVOID _In_ ULONG _In_ PVOID context
Definition: wdfdriver.h:113
LIST_ENTRY list_entry
Definition: volume.c:952
uint64_t generation
Definition: btrfs.h:229
#define FILE_READ_ATTRIBUTES
Definition: nt_native.h:647
GLuint GLuint end
Definition: gl.h:1545
#define ExAllocatePoolWithTag(hernya, size, tag)
Definition: env_spec_w32.h:350
static const BYTE ext2[]
Definition: encode.c:2699
NTSTATUS NTAPI IoUnregisterPlugPlayNotification(_In_ PVOID NotificationEntry)
Definition: pnpnotify.c:479
PFILE_OBJECT fileobj
Definition: btrfs_drv.h:850
PDEVICE_OBJECT master_devobj
Definition: btrfs.c:66
NTSTATUS vol_close(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:95
#define InterlockedDecrement
Definition: armddk.h:52
struct _STORAGE_DEVICE_NUMBER STORAGE_DEVICE_NUMBER
uint64_t dev_id
Definition: btrfs.h:178
void add_volume_device(superblock *sb, PUNICODE_STRING devpath, uint64_t length, ULONG disk_num, ULONG part_num)
Definition: volume.c:1077
#define IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS
Definition: ntddvol.h:41
Definition: typedefs.h:119
Definition: inflate.c:139
struct _cl_event * event
Definition: glext.h:7739
__drv_aliasesMem FORCEINLINE PIO_STACK_LOCATION IoGetNextIrpStackLocation(_In_ PIRP Irp)
Definition: iofuncs.h:2695
BYTE uint8_t
Definition: msvideo1.c:66
LARGE_INTEGER Length
Definition: winioctl.h:560
NTSTATUS NTAPI IoReportDetectedDevice(_In_ PDRIVER_OBJECT DriverObject, _In_ INTERFACE_TYPE LegacyBusType, _In_ ULONG BusNumber, _In_ ULONG SlotNumber, _In_opt_ PCM_RESOURCE_LIST ResourceList, _In_opt_ PIO_RESOURCE_REQUIREMENTS_LIST ResourceRequirements, _In_ BOOLEAN ResourceAssigned, _Inout_ PDEVICE_OBJECT *DeviceObject)
Definition: pnpreport.c:148
#define ERR(fmt,...)
Definition: debug.h:110
void free_vol(volume_device_extension *vde)
Definition: volume.c:50
__drv_aliasesMem FORCEINLINE PIO_STACK_LOCATION IoGetCurrentIrpStackLocation(_In_ PIRP Irp)
Definition: iofuncs.h:2793
VOID NTAPI IoDeleteDevice(IN PDEVICE_OBJECT DeviceObject)
Definition: device.c:1251
struct _DISK_GEOMETRY DISK_GEOMETRY
PFILE_OBJECT FileObject
Definition: iotypes.h:3169
NTSTATUS(__stdcall * tIoUnregisterPlugPlayNotificationEx)(PVOID NotificationEntry)
Definition: btrfs_drv.h:1847
VOID NTAPI IoInvalidateDeviceRelations(IN PDEVICE_OBJECT DeviceObject, IN DEVICE_RELATION_TYPE Type)
Definition: pnpmgr.c:2342
ERESOURCE pdo_list_lock
Definition: btrfs.c:102
LIST_ENTRY pdo_list
Definition: btrfs.c:103
UINT64 uint64_t
Definition: types.h:77
#define KeInitializeEvent(pEvt, foo, foo2)
Definition: env_spec_w32.h:477
#define IRP_INPUT_OPERATION
#define IRP_BUFFERED_IO
#define InterlockedIncrement
Definition: armddk.h:53
#define STATUS_OBJECT_NAME_NOT_FOUND
Definition: udferr_usr.h:149
BTRFS_UUID uuid
Definition: volume.c:955
#define STATUS_BUFFER_OVERFLOW
Definition: shellext.h:66
GLsizei GLenum const GLvoid GLsizei GLenum GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLint GLint GLint GLshort GLshort GLshort GLubyte GLubyte GLubyte GLuint GLuint GLuint GLushort GLushort GLushort GLbyte GLbyte GLbyte GLbyte GLdouble GLdouble GLdouble GLdouble GLfloat GLfloat GLfloat GLfloat GLint GLint GLint GLint GLshort GLshort GLshort GLshort GLubyte GLubyte GLubyte GLubyte GLuint GLuint GLuint GLuint GLushort GLushort GLushort GLushort GLboolean const GLdouble const GLfloat const GLint const GLshort const GLbyte const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLdouble const GLfloat const GLfloat const GLint const GLint const GLshort const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort const GLdouble const GLfloat const GLint const GLshort GLenum GLenum GLenum GLfloat GLenum GLint GLenum GLenum GLenum GLfloat GLenum GLenum GLint GLenum GLfloat GLenum GLint GLint GLushort GLenum GLenum GLfloat GLenum GLenum GLint GLfloat const GLubyte GLenum GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLint GLint GLsizei GLsizei GLint GLenum GLenum const GLvoid GLenum GLenum const GLfloat GLenum GLenum const GLint GLenum GLenum const GLdouble GLenum GLenum const GLfloat GLenum GLenum const GLint GLsizei GLuint GLfloat GLuint GLbitfield GLfloat GLint GLuint GLboolean GLenum GLfloat GLenum GLbitfield GLenum GLfloat GLfloat GLint GLint const GLfloat GLenum GLfloat GLfloat GLint GLint GLfloat GLfloat GLint GLint const GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat GLint GLfloat GLfloat const GLdouble const GLfloat const GLdouble const GLfloat GLint i
Definition: glfuncs.h:248
unsigned short USHORT
Definition: pedump.c:61
#define IOCTL_MOUNTDEV_QUERY_SUGGESTED_LINK_NAME
Definition: imports.h:99
#define KEY_QUERY_VALUE
Definition: nt_native.h:1016
BTRFS_UUID uuid
Definition: btrfs.h:225
#define InitializeListHead(ListHead)
Definition: env_spec_w32.h:944
_In_ PIO_STACK_LOCATION IrpSp
Definition: create.c:4137
PDEVICE_OBJECT busobj
Definition: btrfs.c:66
Definition: list.h:27
#define NULL
Definition: types.h:112
NTSTATUS NTAPI IoCallDriver(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: irp.c:1218
UNICODE_STRING registry_path
Definition: btrfs.c:88
uint32_t mount_allow_degraded
Definition: btrfs.c:83
UINT32 uint32_t
Definition: types.h:75
static NTSTATUS vol_is_writable(volume_device_extension *vde)
Definition: volume.c:495
BOOLEAN NTAPI ExAcquireResourceSharedLite(IN PERESOURCE Resource, IN BOOLEAN Wait)
Definition: resource.c:885
static void drive_letter_callback2(pdo_device_extension *pdode, PDEVICE_OBJECT mountmgr)
Definition: volume.c:958
#define IRP_MJ_READ
Definition: rdpdr.c:46
#define IRP_DEALLOCATE_BUFFER
volume_device_extension * vde
Definition: btrfs_drv.h:881
uint64_t size
Definition: btrfs_drv.h:852
Definition: name.c:38
VOID NTAPI IoFreeIrp(IN PIRP Irp)
Definition: irp.c:1666
ULONG ERESOURCE
Definition: env_spec_w32.h:594
NTSTATUS vol_create(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:36
LIST_ENTRY list_entry
Definition: btrfs_drv.h:859
Definition: msctf.idl:510
unsigned int ULONG
Definition: retypes.h:1
NTSTATUS pnp_query_remove_device(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: pnp.c:23
#define IO_NO_INCREMENT
Definition: iotypes.h:598
NTSTATUS NTAPI IoCreateDevice(IN PDRIVER_OBJECT DriverObject, IN ULONG DeviceExtensionSize, IN PUNICODE_STRING DeviceName, IN DEVICE_TYPE DeviceType, IN ULONG DeviceCharacteristics, IN BOOLEAN Exclusive, OUT PDEVICE_OBJECT *DeviceObject)
Definition: device.c:1031
NTSYSAPI VOID NTAPI RtlInitUnicodeString(PUNICODE_STRING DestinationString, PCWSTR SourceString)
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:262
#define InitializeObjectAttributes(p, n, a, r, s)
Definition: reg.c:106
NTSTATUS NTAPI IoRegisterPlugPlayNotification(_In_ IO_NOTIFICATION_EVENT_CATEGORY EventCategory, _In_ ULONG EventCategoryFlags, _In_opt_ PVOID EventCategoryData, _In_ PDRIVER_OBJECT DriverObject, _In_ PDRIVER_NOTIFICATION_CALLBACK_ROUTINE CallbackRoutine, _Inout_opt_ PVOID Context, _Out_ PVOID *NotificationEntry)
Definition: pnpnotify.c:345
#define RtlCopyMemory(Destination, Source, Length)
Definition: typedefs.h:263
#define IRP_MJ_WRITE
Definition: rdpdr.c:47
PIRP NTAPI IoAllocateIrp(IN CCHAR StackSize, IN BOOLEAN ChargeQuota)
Definition: irp.c:615
#define FILE_DEVICE_SECURE_OPEN
Definition: cdrw_usr.h:46
#define STATUS_SUCCESS
Definition: shellext.h:65
uint64_t devid
Definition: btrfs_drv.h:847
static NTSTATUS vol_check_verify(volume_device_extension *vde)
Definition: volume.c:379
uint32_t sector_size
Definition: btrfs.h:238
struct _NAMED_PIPE_CREATE_PARAMETERS * Parameters
Definition: iotypes.h:3128
LIST_ENTRY children
Definition: btrfs_drv.h:889
static const BYTE ext3[]
Definition: encode.c:2701
#define REG_DWORD
Definition: sdbapi.c:596
static NTSTATUS vol_query_unique_id(volume_device_extension *vde, PIRP Irp)
Definition: volume.c:333
#define IOCTL_VOLUME_GET_GPT_ATTRIBUTES
Definition: ntddvol.h:56
#define UInt32x32To64(a, b)
Definition: intsafe.h:252
UCHAR UniqueId[1]
Definition: imports.h:139
static NTSTATUS vol_get_gpt_attributes(PIRP Irp)
Definition: volume.c:595
#define ExFreePool(addr)
Definition: env_spec_w32.h:352
#define IOCTL_DISK_GET_DRIVE_GEOMETRY
Definition: cdrw_usr.h:169
#define IOCTL_MOUNTDEV_LINK_CREATED
Definition: imports.h:106
#define RtlCompareMemory(s1, s2, l)
Definition: env_spec_w32.h:465
UNICODE_STRING name
Definition: volume.c:953
LONGLONG QuadPart
Definition: typedefs.h:114
struct _DISK_EXTENT DISK_EXTENT
#define STATUS_DEVICE_NOT_READY
Definition: shellext.h:70
GLuint const GLchar * name
Definition: glext.h:6031