ReactOS  0.4.15-dev-1367-g07cc0b5
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 
307  TRACE("(%p, %p)\n", DeviceObject, Irp);
308 
310 }
311 
313  TRACE("(%p, %p)\n", DeviceObject, Irp);
314 
316 }
317 
319  TRACE("(%p, %p)\n", DeviceObject, Irp);
320 
322 }
323 
325  TRACE("(%p, %p)\n", DeviceObject, Irp);
326 
328 }
329 
331  TRACE("(%p, %p)\n", DeviceObject, Irp);
332 
333  return STATUS_SUCCESS;
334 }
335 
337  TRACE("(%p, %p)\n", DeviceObject, Irp);
338 
340 }
341 
343  TRACE("(%p, %p)\n", DeviceObject, Irp);
344 
346 }
347 
349  TRACE("(%p, %p)\n", DeviceObject, Irp);
350 
351  Irp->IoStatus.Information = 0;
352 
353  return STATUS_SUCCESS;
354 }
355 
357  TRACE("(%p, %p)\n", DeviceObject, Irp);
358 
360 }
361 
363  TRACE("(%p, %p)\n", DeviceObject, Irp);
364 
366 }
367 
369  TRACE("(%p, %p)\n", DeviceObject, Irp);
370 
372 }
373 
377 
378  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(MOUNTDEV_NAME)) {
379  Irp->IoStatus.Information = sizeof(MOUNTDEV_NAME);
381  }
382 
383  name = Irp->AssociatedIrp.SystemBuffer;
384  name->NameLength = vde->name.Length;
385 
386  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < offsetof(MOUNTDEV_NAME, Name[0]) + name->NameLength) {
387  Irp->IoStatus.Information = sizeof(MOUNTDEV_NAME);
388  return STATUS_BUFFER_OVERFLOW;
389  }
390 
391  RtlCopyMemory(name->Name, vde->name.Buffer, vde->name.Length);
392 
393  Irp->IoStatus.Information = offsetof(MOUNTDEV_NAME, Name[0]) + name->NameLength;
394 
395  return STATUS_SUCCESS;
396 }
397 
400  MOUNTDEV_UNIQUE_ID* mduid;
401  pdo_device_extension* pdode;
402 
403  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(MOUNTDEV_UNIQUE_ID)) {
404  Irp->IoStatus.Information = sizeof(MOUNTDEV_UNIQUE_ID);
406  }
407 
408  mduid = Irp->AssociatedIrp.SystemBuffer;
409  mduid->UniqueIdLength = sizeof(BTRFS_UUID);
410 
411  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < offsetof(MOUNTDEV_UNIQUE_ID, UniqueId[0]) + mduid->UniqueIdLength) {
412  Irp->IoStatus.Information = sizeof(MOUNTDEV_UNIQUE_ID);
413  return STATUS_BUFFER_OVERFLOW;
414  }
415 
416  if (!vde->pdo)
418 
419  pdode = vde->pdode;
420 
421  RtlCopyMemory(mduid->UniqueId, &pdode->uuid, sizeof(BTRFS_UUID));
422 
423  Irp->IoStatus.Information = offsetof(MOUNTDEV_UNIQUE_ID, UniqueId[0]) + mduid->UniqueIdLength;
424 
425  return STATUS_SUCCESS;
426 }
427 
430  uint8_t* buf;
431 
432  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength == 0 || !Irp->AssociatedIrp.SystemBuffer)
434 
435  buf = (uint8_t*)Irp->AssociatedIrp.SystemBuffer;
436 
437  *buf = 1;
438 
439  Irp->IoStatus.Information = 1;
440 
441  return STATUS_SUCCESS;
442 }
443 
445  pdo_device_extension* pdode = vde->pdode;
447  LIST_ENTRY* le;
448 
450 
451  le = pdode->children.Flink;
452  while (le != &pdode->children) {
454 
456  if (!NT_SUCCESS(Status))
457  goto end;
458 
459  le = le->Flink;
460  }
461 
463 
464 end:
466 
467  return Status;
468 }
469 
471  pdo_device_extension* pdode = vde->pdode;
473  LIST_ENTRY* le;
474  ULONG num_extents = 0, i, max_extents = 1;
477 
478  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(VOLUME_DISK_EXTENTS))
480 
482 
483  le = pdode->children.Flink;
484  while (le != &pdode->children) {
487 
490  ERR("IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS returned %08lx\n", Status);
491  goto end;
492  }
493 
494  num_extents += ext2.NumberOfDiskExtents;
495 
496  if (ext2.NumberOfDiskExtents > max_extents)
497  max_extents = ext2.NumberOfDiskExtents;
498 
499  le = le->Flink;
500  }
501 
502  ext = Irp->AssociatedIrp.SystemBuffer;
503 
504  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < offsetof(VOLUME_DISK_EXTENTS, Extents[0]) + (num_extents * sizeof(DISK_EXTENT))) {
505  Irp->IoStatus.Information = offsetof(VOLUME_DISK_EXTENTS, Extents[0]);
506  ext->NumberOfDiskExtents = num_extents;
508  goto end;
509  }
510 
511  ext3 = ExAllocatePoolWithTag(PagedPool, offsetof(VOLUME_DISK_EXTENTS, Extents[0]) + (max_extents * sizeof(DISK_EXTENT)), ALLOC_TAG);
512  if (!ext3) {
513  ERR("out of memory\n");
515  goto end;
516  }
517 
518  i = 0;
519  ext->NumberOfDiskExtents = 0;
520 
521  le = pdode->children.Flink;
522  while (le != &pdode->children) {
524 
526  (ULONG)offsetof(VOLUME_DISK_EXTENTS, Extents[0]) + (max_extents * sizeof(DISK_EXTENT)), false, NULL);
527  if (!NT_SUCCESS(Status)) {
528  ERR("IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS returned %08lx\n", Status);
529  ExFreePool(ext3);
530  goto end;
531  }
532 
533  if (i + ext3->NumberOfDiskExtents > num_extents) {
534  Irp->IoStatus.Information = offsetof(VOLUME_DISK_EXTENTS, Extents[0]);
535  ext->NumberOfDiskExtents = i + ext3->NumberOfDiskExtents;
537  ExFreePool(ext3);
538  goto end;
539  }
540 
541  RtlCopyMemory(&ext->Extents[i], ext3->Extents, sizeof(DISK_EXTENT) * ext3->NumberOfDiskExtents);
542  i += ext3->NumberOfDiskExtents;
543 
544  le = le->Flink;
545  }
546 
547  ExFreePool(ext3);
548 
550 
551  ext->NumberOfDiskExtents = i;
552  Irp->IoStatus.Information = offsetof(VOLUME_DISK_EXTENTS, Extents[0]) + (i * sizeof(DISK_EXTENT));
553 
554 end:
556 
557  return Status;
558 }
559 
561  pdo_device_extension* pdode = vde->pdode;
563  LIST_ENTRY* le;
564  bool writable = false;
565 
567 
568  le = pdode->children.Flink;
569  while (le != &pdode->children) {
571 
572  Status = dev_ioctl(vc->devobj, IOCTL_DISK_IS_WRITABLE, NULL, 0, NULL, 0, true, NULL);
573 
574  if (NT_SUCCESS(Status)) {
575  writable = true;
576  break;
577  } else if (Status != STATUS_MEDIA_WRITE_PROTECTED)
578  goto end;
579 
580  le = le->Flink;
581  }
582 
584 
585 end:
587 
588  return STATUS_SUCCESS;
589 }
590 
593  pdo_device_extension* pdode = vde->pdode;
595  LIST_ENTRY* le;
596 
597  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(GET_LENGTH_INFORMATION))
599 
600  gli = (GET_LENGTH_INFORMATION*)Irp->AssociatedIrp.SystemBuffer;
601 
602  gli->Length.QuadPart = 0;
603 
605 
606  le = pdode->children.Flink;
607  while (le != &pdode->children) {
609 
610  gli->Length.QuadPart += vc->size;
611 
612  le = le->Flink;
613  }
614 
616 
617  Irp->IoStatus.Information = sizeof(GET_LENGTH_INFORMATION);
618 
619  return STATUS_SUCCESS;
620 }
621 
623  volume_device_extension* vde = DeviceObject->DeviceExtension;
624  pdo_device_extension* pdode = vde->pdode;
626  DISK_GEOMETRY* geom;
628  LIST_ENTRY* le;
629 
630  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(DISK_GEOMETRY))
632 
633  length = 0;
634 
636 
637  le = pdode->children.Flink;
638  while (le != &pdode->children) {
640 
641  length += vc->size;
642 
643  le = le->Flink;
644  }
645 
647 
648  geom = (DISK_GEOMETRY*)Irp->AssociatedIrp.SystemBuffer;
649  geom->BytesPerSector = DeviceObject->SectorSize == 0 ? 0x200 : DeviceObject->SectorSize;
650  geom->SectorsPerTrack = 0x3f;
651  geom->TracksPerCylinder = 0xff;
654 
655  Irp->IoStatus.Information = sizeof(DISK_GEOMETRY);
656 
657  return STATUS_SUCCESS;
658 }
659 
663 
664  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(VOLUME_GET_GPT_ATTRIBUTES_INFORMATION))
666 
667  vggai = (VOLUME_GET_GPT_ATTRIBUTES_INFORMATION*)Irp->AssociatedIrp.SystemBuffer;
668 
669  vggai->GptAttributes = 0;
670 
671  Irp->IoStatus.Information = sizeof(VOLUME_GET_GPT_ATTRIBUTES_INFORMATION);
672 
673  return STATUS_SUCCESS;
674 }
675 
677  pdo_device_extension* pdode = vde->pdode;
679  volume_child* vc;
681 
682  // If only one device, return its disk number. This is needed for ejection to work.
683 
684  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(STORAGE_DEVICE_NUMBER))
686 
688 
689  if (IsListEmpty(&pdode->children) || pdode->num_children > 1) {
692  }
693 
695 
696  if (vc->disk_num == 0xffffffff) {
699  }
700 
701  sdn = (STORAGE_DEVICE_NUMBER*)Irp->AssociatedIrp.SystemBuffer;
702 
704  sdn->DeviceNumber = vc->disk_num;
705  sdn->PartitionNumber = vc->part_num;
706 
708 
709  Irp->IoStatus.Information = sizeof(STORAGE_DEVICE_NUMBER);
710 
711  return STATUS_SUCCESS;
712 }
713 
714 _Function_class_(IO_COMPLETION_ROUTINE)
715 static NTSTATUS __stdcall vol_ioctl_completion(PDEVICE_OBJECT DeviceObject, PIRP Irp, PVOID conptr) {
716  KEVENT* event = conptr;
717 
719  UNUSED(Irp);
720 
721  KeSetEvent(event, 0, false);
722 
724 }
725 
728  volume_child* vc;
729  PIRP Irp2;
730  PIO_STACK_LOCATION IrpSp, IrpSp2;
731  KEVENT Event;
732  pdo_device_extension* pdode = vde->pdode;
733 
734  TRACE("(%p, %p)\n", vde, Irp);
735 
737 
738  if (IsListEmpty(&pdode->children)) {
741  }
742 
744 
745  if (vc->list_entry.Flink != &pdode->children) { // more than one device
748  }
749 
750  Irp2 = IoAllocateIrp(vc->devobj->StackSize, false);
751 
752  if (!Irp2) {
753  ERR("IoAllocateIrp failed\n");
756  }
757 
759  IrpSp2 = IoGetNextIrpStackLocation(Irp2);
760 
761  IrpSp2->MajorFunction = IrpSp->MajorFunction;
762  IrpSp2->MinorFunction = IrpSp->MinorFunction;
763  IrpSp2->FileObject = vc->fileobj;
764 
765  IrpSp2->Parameters.DeviceIoControl.OutputBufferLength = IrpSp->Parameters.DeviceIoControl.OutputBufferLength;
766  IrpSp2->Parameters.DeviceIoControl.InputBufferLength = IrpSp->Parameters.DeviceIoControl.InputBufferLength;
767  IrpSp2->Parameters.DeviceIoControl.IoControlCode = IrpSp->Parameters.DeviceIoControl.IoControlCode;
768  IrpSp2->Parameters.DeviceIoControl.Type3InputBuffer = IrpSp->Parameters.DeviceIoControl.Type3InputBuffer;
769 
770  Irp2->AssociatedIrp.SystemBuffer = Irp->AssociatedIrp.SystemBuffer;
771  Irp2->MdlAddress = Irp->MdlAddress;
772  Irp2->UserBuffer = Irp->UserBuffer;
773  Irp2->Flags = Irp->Flags;
774 
776 
777  IoSetCompletionRoutine(Irp2, vol_ioctl_completion, &Event, true, true, true);
778 
779  Status = IoCallDriver(vc->devobj, Irp2);
780 
781  if (Status == STATUS_PENDING) {
783  Status = Irp2->IoStatus.Status;
784  }
785 
786  Irp->IoStatus.Status = Irp2->IoStatus.Status;
787  Irp->IoStatus.Information = Irp2->IoStatus.Information;
788 
790 
791  IoFreeIrp(Irp2);
792 
793  return Status;
794 }
795 
798  MOUNTDEV_STABLE_GUID* mdsg;
799  pdo_device_extension* pdode;
800 
801  if (IrpSp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(MOUNTDEV_STABLE_GUID)) {
802  Irp->IoStatus.Information = sizeof(MOUNTDEV_STABLE_GUID);
804  }
805 
806  mdsg = Irp->AssociatedIrp.SystemBuffer;
807 
808  if (!vde->pdo)
810 
811  pdode = vde->pdode;
812 
813  RtlCopyMemory(&mdsg->StableGuid, &pdode->uuid, sizeof(BTRFS_UUID));
814 
815  Irp->IoStatus.Information = sizeof(MOUNTDEV_STABLE_GUID);
816 
817  return STATUS_SUCCESS;
818 }
819 
821  volume_device_extension* vde = DeviceObject->DeviceExtension;
823 
824  TRACE("(%p, %p)\n", DeviceObject, Irp);
825 
826  Irp->IoStatus.Information = 0;
827 
828  switch (IrpSp->Parameters.DeviceIoControl.IoControlCode) {
830  return vol_query_device_name(vde, Irp);
831 
833  return vol_query_unique_id(vde, Irp);
834 
836  return vol_get_device_number(vde, Irp);
837 
839  TRACE("unhandled control code IOCTL_MOUNTDEV_QUERY_SUGGESTED_LINK_NAME\n");
840  break;
841 
843  return vol_query_stable_guid(vde, Irp);
844 
846  TRACE("unhandled control code IOCTL_MOUNTDEV_LINK_CREATED\n");
847  break;
848 
850  return vol_get_gpt_attributes(Irp);
851 
853  return vol_is_dynamic(Irp);
854 
855  case IOCTL_VOLUME_ONLINE:
856  Irp->IoStatus.Information = 0;
857  return STATUS_SUCCESS;
858 
860  Irp->IoStatus.Information = 0;
861  return STATUS_SUCCESS;
862 
865 
867  return vol_is_writable(vde);
868 
870  return vol_get_length(vde, Irp);
871 
874  return vol_check_verify(vde);
875 
877  return vol_get_disk_extents(vde, Irp);
878 
879  default: { // pass ioctl through if only one child device
880  ULONG code = IrpSp->Parameters.DeviceIoControl.IoControlCode;
882 
883 #ifdef __REACTOS__
884  &code;
885 #endif
886 
887  if (NT_SUCCESS(Status))
888  TRACE("passing through ioctl %lx (returning %08lx)\n", code, Status);
889  else
890  WARN("passing through ioctl %lx (returning %08lx)\n", code, Status);
891 
892  return Status;
893  }
894  }
895 
897 }
898 
900  TRACE("(%p, %p)\n", DeviceObject, Irp);
901 
903 }
904 
906  TRACE("(%p, %p)\n", DeviceObject, Irp);
907 
909 }
910 
912  TRACE("(%p, %p)\n", DeviceObject, Irp);
913 
915 }
916 
919  ULONG mmdltsize;
922 
923  mmdltsize = (ULONG)offsetof(MOUNTMGR_DRIVE_LETTER_TARGET, DeviceName[0]) + devpath->Length;
924 
925  mmdlt = ExAllocatePoolWithTag(NonPagedPool, mmdltsize, ALLOC_TAG);
926  if (!mmdlt) {
927  ERR("out of memory\n");
929  }
930 
931  mmdlt->DeviceNameLength = devpath->Length;
932  RtlCopyMemory(&mmdlt->DeviceName, devpath->Buffer, devpath->Length);
933  TRACE("mmdlt = %.*S\n", (int)(mmdlt->DeviceNameLength / sizeof(WCHAR)), mmdlt->DeviceName);
934 
936 
937  if (!NT_SUCCESS(Status))
938  ERR("IOCTL_MOUNTMGR_NEXT_DRIVE_LETTER returned %08lx\n", Status);
939  else
940  TRACE("DriveLetterWasAssigned = %u, CurrentDriveLetter = %c\n", mmdli.DriveLetterWasAssigned, mmdli.CurrentDriveLetter);
941 
942  ExFreePool(mmdlt);
943 
944  return Status;
945 }
946 
947 _Function_class_(DRIVER_NOTIFICATION_CALLBACK_ROUTINE)
951 
952  if (RtlCompareMemory(&tdrn->Event, &GUID_TARGET_DEVICE_QUERY_REMOVE, sizeof(GUID)) == sizeof(GUID)) {
953  TRACE("GUID_TARGET_DEVICE_QUERY_REMOVE\n");
954 
955  if (pdode->vde && pdode->vde->mounted_device)
957  }
958 
959  return STATUS_SUCCESS;
960 }
961 
963  HANDLE h;
966  UNICODE_STRING path, adus;
967  uint32_t degraded = mount_allow_degraded;
968  ULONG i, j, kvfilen, retlen;
970 
971  path.Length = path.MaximumLength = registry_path.Length + (37 * sizeof(WCHAR));
973 
974  if (!path.Buffer) {
975  ERR("out of memory\n");
976  return false;
977  }
978 
980  i = registry_path.Length / sizeof(WCHAR);
981 
982  path.Buffer[i] = '\\';
983  i++;
984 
985  for (j = 0; j < 16; j++) {
986  path.Buffer[i] = hex_digit((uuid->uuid[j] & 0xF0) >> 4);
987  path.Buffer[i+1] = hex_digit(uuid->uuid[j] & 0xF);
988 
989  i += 2;
990 
991  if (j == 3 || j == 5 || j == 7 || j == 9) {
992  path.Buffer[i] = '-';
993  i++;
994  }
995  }
996 
998 
999  kvfilen = (ULONG)offsetof(KEY_VALUE_FULL_INFORMATION, Name[0]) + (255 * sizeof(WCHAR));
1000  kvfi = ExAllocatePoolWithTag(PagedPool, kvfilen, ALLOC_TAG);
1001  if (!kvfi) {
1002  ERR("out of memory\n");
1003  ExFreePool(path.Buffer);
1004  return false;
1005  }
1006 
1007  Status = ZwOpenKey(&h, KEY_QUERY_VALUE, &oa);
1009  goto end;
1010  else if (!NT_SUCCESS(Status)) {
1011  ERR("ZwOpenKey returned %08lx\n", Status);
1012  goto end;
1013  }
1014 
1015  adus.Buffer = L"AllowDegraded";
1016  adus.Length = adus.MaximumLength = sizeof(adus.Buffer) - sizeof(WCHAR);
1017 
1018  if (NT_SUCCESS(ZwQueryValueKey(h, &adus, KeyValueFullInformation, kvfi, kvfilen, &retlen))) {
1019  if (kvfi->Type == REG_DWORD && kvfi->DataLength >= sizeof(uint32_t)) {
1020  uint32_t* val = (uint32_t*)((uint8_t*)kvfi + kvfi->DataOffset);
1021 
1022  degraded = *val;
1023  }
1024  }
1025 
1026  ZwClose(h);
1027 
1028 end:
1029  ExFreePool(kvfi);
1030 
1031  ExFreePool(path.Buffer);
1032 
1033  return degraded;
1034 }
1035 
1036 typedef struct {
1042 
1044  LIST_ENTRY* le;
1045  LIST_ENTRY dlrlist;
1046 
1047  InitializeListHead(&dlrlist);
1048 
1050 
1051  le = pdode->children.Flink;
1052 
1053  while (le != &pdode->children) {
1054  drive_letter_removal* dlr;
1055 
1057 
1059  if (!dlr) {
1060  ERR("out of memory\n");
1061 
1062  while (!IsListEmpty(&dlrlist)) {
1064 
1065  ExFreePool(dlr->name.Buffer);
1066  ExFreePool(dlr);
1067  }
1068 
1070  return;
1071  }
1072 
1073  dlr->name.Length = dlr->name.MaximumLength = vc->pnp_name.Length + (3 * sizeof(WCHAR));
1075 
1076  if (!dlr->name.Buffer) {
1077  ERR("out of memory\n");
1078 
1079  ExFreePool(dlr);
1080 
1081  while (!IsListEmpty(&dlrlist)) {
1083 
1084  ExFreePool(dlr->name.Buffer);
1085  ExFreePool(dlr);
1086  }
1087 
1089  return;
1090  }
1091 
1092  RtlCopyMemory(dlr->name.Buffer, L"\\??", 3 * sizeof(WCHAR));
1093  RtlCopyMemory(&dlr->name.Buffer[3], vc->pnp_name.Buffer, vc->pnp_name.Length);
1094 
1095  dlr->uuid = vc->uuid;
1096 
1097  InsertTailList(&dlrlist, &dlr->list_entry);
1098 
1099  le = le->Flink;
1100  }
1101 
1103 
1104  le = dlrlist.Flink;
1105  while (le != &dlrlist) {
1107 
1108  dlr->Status = remove_drive_letter(mountmgr, &dlr->name);
1109 
1110  if (!NT_SUCCESS(dlr->Status) && dlr->Status != STATUS_NOT_FOUND)
1111  WARN("remove_drive_letter returned %08lx\n", dlr->Status);
1112 
1113  le = le->Flink;
1114  }
1115 
1116  // set vc->had_drive_letter
1117 
1119 
1120  while (!IsListEmpty(&dlrlist)) {
1122 
1123  le = pdode->children.Flink;
1124 
1125  while (le != &pdode->children) {
1127 
1128  if (RtlCompareMemory(&vc->uuid, &dlr->uuid, sizeof(BTRFS_UUID)) == sizeof(BTRFS_UUID)) {
1129  vc->had_drive_letter = NT_SUCCESS(dlr->Status);
1130  break;
1131  }
1132 
1133  le = le->Flink;
1134  }
1135 
1136  ExFreePool(dlr->name.Buffer);
1137  ExFreePool(dlr);
1138  }
1139 
1141 }
1142 
1143 _Function_class_(IO_WORKITEM_ROUTINE)
1144 static void __stdcall drive_letter_callback(pdo_device_extension* pdode) {
1145  NTSTATUS Status;
1146  UNICODE_STRING mmdevpath;
1148  PFILE_OBJECT mountmgrfo;
1149 
1151  Status = IoGetDeviceObjectPointer(&mmdevpath, FILE_READ_ATTRIBUTES, &mountmgrfo, &mountmgr);
1152  if (!NT_SUCCESS(Status)) {
1153  ERR("IoGetDeviceObjectPointer returned %08lx\n", Status);
1154  return;
1155  }
1156 
1158 
1159  ObDereferenceObject(mountmgrfo);
1160 }
1161 
1163  NTSTATUS Status;
1164  LIST_ENTRY* le;
1166  volume_child* vc;
1168  UNICODE_STRING devpath2;
1169  bool inserted = false, new_pdo = false;
1170  pdo_device_extension* pdode = NULL;
1171  PDEVICE_OBJECT pdo = NULL;
1172  bool process_drive_letters = false;
1173 
1174  if (devpath->Length == 0)
1175  return;
1176 
1178 
1179  le = pdo_list.Flink;
1180  while (le != &pdo_list) {
1182 
1183  if (RtlCompareMemory(&pdode2->uuid, &sb->uuid, sizeof(BTRFS_UUID)) == sizeof(BTRFS_UUID)) {
1184  pdode = pdode2;
1185  break;
1186  }
1187 
1188  le = le->Flink;
1189  }
1190 
1192  if (!NT_SUCCESS(Status)) {
1193  ERR("IoGetDeviceObjectPointer returned %08lx\n", Status);
1195  return;
1196  }
1197 
1198  if (!pdode) {
1199  if (no_pnp) {
1200  Status = IoReportDetectedDevice(drvobj, InterfaceTypeUndefined, 0xFFFFFFFF, 0xFFFFFFFF, NULL, NULL, 0, &pdo);
1201 
1202  if (!NT_SUCCESS(Status)) {
1203  ERR("IoReportDetectedDevice returned %08lx\n", Status);
1205  return;
1206  }
1207 
1209 
1210  if (!pdode) {
1211  ERR("out of memory\n");
1213  return;
1214  }
1215  } else {
1218  if (!NT_SUCCESS(Status)) {
1219  ERR("IoCreateDevice returned %08lx\n", Status);
1221  goto fail;
1222  }
1223 
1225 
1226  pdode = pdo->DeviceExtension;
1227  }
1228 
1229  RtlZeroMemory(pdode, sizeof(pdo_device_extension));
1230 
1231  pdode->type = VCB_TYPE_PDO;
1232  pdode->pdo = pdo;
1233  pdode->uuid = sb->uuid;
1234 
1236  InitializeListHead(&pdode->children);
1237  pdode->num_children = sb->num_devices;
1238  pdode->children_loaded = 0;
1239 
1240  pdo->Flags &= ~DO_DEVICE_INITIALIZING;
1241  pdo->SectorSize = (USHORT)sb->sector_size;
1242 
1244 
1245  new_pdo = true;
1246  } else {
1249 
1250  le = pdode->children.Flink;
1251  while (le != &pdode->children) {
1253 
1254  if (RtlCompareMemory(&vc2->uuid, &sb->dev_item.device_uuid, sizeof(BTRFS_UUID)) == sizeof(BTRFS_UUID)) {
1255  // duplicate, ignore
1258  goto fail;
1259  }
1260 
1261  le = le->Flink;
1262  }
1263  }
1264 
1266  if (!vc) {
1267  ERR("out of memory\n");
1268 
1271 
1272  goto fail;
1273  }
1274 
1275  vc->uuid = sb->dev_item.device_uuid;
1276  vc->devid = sb->dev_item.dev_id;
1277  vc->generation = sb->generation;
1278  vc->notification_entry = NULL;
1279  vc->boot_volume = false;
1280 
1282  drvobj, pnp_removal, pdode, &vc->notification_entry);
1283  if (!NT_SUCCESS(Status))
1284  WARN("IoRegisterPlugPlayNotification returned %08lx\n", Status);
1285 
1286  vc->devobj = DeviceObject;
1287  vc->fileobj = FileObject;
1288 
1289  devpath2 = *devpath;
1290 
1291  // The PNP path sometimes begins \\?\ and sometimes \??\. We need to remove this prefix
1292  // so we can compare properly if the device is removed.
1293  if (devpath->Length > 4 * sizeof(WCHAR) && devpath->Buffer[0] == '\\' && (devpath->Buffer[1] == '\\' || devpath->Buffer[1] == '?') &&
1294  devpath->Buffer[2] == '?' && devpath->Buffer[3] == '\\') {
1295  devpath2.Buffer = &devpath2.Buffer[3];
1296  devpath2.Length -= 3 * sizeof(WCHAR);
1297  devpath2.MaximumLength -= 3 * sizeof(WCHAR);
1298  }
1299 
1300  vc->pnp_name.Length = vc->pnp_name.MaximumLength = devpath2.Length;
1302 
1303  if (vc->pnp_name.Buffer)
1304  RtlCopyMemory(vc->pnp_name.Buffer, devpath2.Buffer, devpath2.Length);
1305  else {
1306  ERR("out of memory\n");
1307  vc->pnp_name.Length = vc->pnp_name.MaximumLength = 0;
1308  }
1309 
1310  vc->size = length;
1311  vc->seeding = sb->flags & BTRFS_SUPERBLOCK_FLAGS_SEEDING ? true : false;
1312  vc->disk_num = disk_num;
1313  vc->part_num = part_num;
1314  vc->had_drive_letter = false;
1315 
1316  le = pdode->children.Flink;
1317  while (le != &pdode->children) {
1319 
1320  if (vc2->generation < vc->generation) {
1321  if (le == pdode->children.Flink)
1322  pdode->num_children = sb->num_devices;
1323 
1325  inserted = true;
1326  break;
1327  }
1328 
1329  le = le->Flink;
1330  }
1331 
1332  if (!inserted)
1333  InsertTailList(&pdode->children, &vc->list_entry);
1334 
1335  pdode->children_loaded++;
1336 
1337  if (pdode->vde && pdode->vde->mounted_device) {
1339 
1340  ExAcquireResourceExclusiveLite(&Vcb->tree_lock, true);
1341 
1342  le = Vcb->devices.Flink;
1343  while (le != &Vcb->devices) {
1345 
1346  if (!dev->devobj && RtlCompareMemory(&dev->devitem.device_uuid, &sb->dev_item.device_uuid, sizeof(BTRFS_UUID)) == sizeof(BTRFS_UUID)) {
1347  dev->devobj = DeviceObject;
1348  dev->disk_num = disk_num;
1349  dev->part_num = part_num;
1350  init_device(Vcb, dev, false);
1351  break;
1352  }
1353 
1354  le = le->Flink;
1355  }
1356 
1357  ExReleaseResourceLite(&Vcb->tree_lock);
1358  }
1359 
1360  if (DeviceObject->Characteristics & FILE_REMOVABLE_MEDIA) {
1361  pdode->removable = true;
1362 
1363  if (pdode->vde && pdode->vde->device)
1364  pdode->vde->device->Characteristics |= FILE_REMOVABLE_MEDIA;
1365  }
1366 
1367  if (pdode->num_children == pdode->children_loaded || (pdode->children_loaded == 1 && allow_degraded_mount(&sb->uuid))) {
1368  if ((!new_pdo || !no_pnp) && pdode->vde) {
1369  Status = IoSetDeviceInterfaceState(&pdode->vde->bus_name, true);
1370  if (!NT_SUCCESS(Status))
1371  WARN("IoSetDeviceInterfaceState returned %08lx\n", Status);
1372  }
1373 
1374  process_drive_letters = true;
1375  }
1376 
1378 
1379  if (new_pdo)
1380  InsertTailList(&pdo_list, &pdode->list_entry);
1381 
1383 
1384  if (process_drive_letters)
1385  drive_letter_callback(pdode);
1386 
1387  if (new_pdo) {
1388  if (RtlCompareMemory(&sb->uuid, &boot_uuid, sizeof(BTRFS_UUID)) == sizeof(BTRFS_UUID))
1389  boot_add_device(pdo);
1390  else if (no_pnp)
1391  AddDevice(drvobj, pdo);
1392  else {
1395  }
1396  }
1397 
1398  return;
1399 
1400 fail:
1402 }
DEVICE_TYPE DeviceType
Definition: ntddstor.h:324
#define DO_DEVICE_INITIALIZING
Definition: env_spec_w32.h:399
_In_ PVOID NotificationStructure
Definition: iofuncs.h:1203
NTSTATUS NTAPI IoUnregisterPlugPlayNotification(IN PVOID NotificationEntry)
Definition: pnpnotify.c:371
#define VCB_TYPE_PDO
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static NTSTATUS vol_query_stable_guid(volume_device_extension *vde, PIRP Irp)
Definition: volume.c:796
bool boot_volume
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Definition: typedefs.h:39
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Definition: volume.c:591
#define FILE_DEVICE_DISK
Definition: winioctl.h:112
tIoUnregisterPlugPlayNotificationEx fIoUnregisterPlugPlayNotificationEx
Definition: btrfs.c:100
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Definition: btrfs_drv.h:867
static NTSTATUS vol_query_device_name(volume_device_extension *vde, PIRP Irp)
Definition: volume.c:374
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Definition: volume.c:368
#define STATUS_INSUFFICIENT_RESOURCES
Definition: udferr_usr.h:158
#define OBJ_CASE_INSENSITIVE
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#define STATUS_MORE_PROCESSING_REQUIRED
Definition: shellext.h:68
Definition: http.c:7094
#define BTRFS_SUPERBLOCK_FLAGS_SEEDING
Definition: btrfs.h:121
superblock * sb
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#define STATUS_INVALID_PARAMETER
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GLsizei const GLchar ** path
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NTSYSAPI NTSTATUS NTAPI ZwClose(_In_ HANDLE Handle)
struct _LIST_ENTRY * Blink
Definition: typedefs.h:122
FORCEINLINE VOID InsertHeadList(_Inout_ PLIST_ENTRY ListHead, _Inout_ __drv_aliasesMem PLIST_ENTRY Entry)
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DRIVER_ADD_DEVICE AddDevice
Definition: parport.h:72
PDEVICE_OBJECT device
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VOID NTAPI ExConvertExclusiveToSharedLite(IN PERESOURCE Resource)
Definition: resource.c:1402
LONG NTSTATUS
Definition: precomp.h:26
static bool allow_degraded_mount(BTRFS_UUID *uuid)
Definition: volume.c:962
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Definition: imports.h:138
#define IOCTL_DISK_CHECK_VERIFY
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NTSTATUS vol_query_information(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:306
#define FILE_OPENED
Definition: nt_native.h:769
NTSTATUS ExInitializeResourceLite(PULONG res)
Definition: env_spec_w32.h:641
NTSTATUS NTAPI ExDeleteResourceLite(IN PERESOURCE Resource)
Definition: resource.c:1456
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Definition: volume.c:225
#define STATUS_INVALID_DEVICE_REQUEST
Definition: udferr_usr.h:138
#define IOCTL_DISK_IS_WRITABLE
Definition: cdrw_usr.h:172
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static NTSTATUS vol_get_disk_extents(volume_device_extension *vde, PIRP Irp)
Definition: volume.c:470
NTSTATUS NTAPI IoGetDeviceObjectPointer(IN PUNICODE_STRING ObjectName, IN ACCESS_MASK DesiredAccess, OUT PFILE_OBJECT *FileObject, OUT PDEVICE_OBJECT *DeviceObject)
Definition: device.c:1435
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ULONG TracksPerCylinder
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IO_STATUS_BLOCK IoStatus
ULONG part_num
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#define InsertTailList(ListHead, Entry)
KEVENT Event
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#define MmGetSystemAddressForMdlSafe(_Mdl, _Priority)
LONG NTAPI KeSetEvent(IN PKEVENT Event, IN KPRIORITY Increment, IN BOOLEAN Wait)
Definition: eventobj.c:159
NTSTATUS NTAPI KeWaitForSingleObject(IN PVOID Object, IN KWAIT_REASON WaitReason, IN KPROCESSOR_MODE WaitMode, IN BOOLEAN Alertable, IN PLARGE_INTEGER Timeout OPTIONAL)
Definition: wait.c:416
#define OBJ_KERNEL_HANDLE
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_Must_inspect_result_ FORCEINLINE BOOLEAN IsListEmpty(_In_ const LIST_ENTRY *ListHead)
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#define DO_DIRECT_IO
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GLfloat GLfloat GLfloat GLfloat h
Definition: glext.h:7723
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#define IoSetCompletionRoutine(_Irp, _CompletionRoutine, _Context, _InvokeOnSuccess, _InvokeOnError, _InvokeOnCancel)
Definition: irp.cpp:498
BOOLEAN NTAPI ExAcquireResourceExclusiveLite(IN PERESOURCE Resource, IN BOOLEAN Wait)
Definition: resource.c:770
UNICODE_STRING name
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Definition: btrfs_drv.h:898
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Definition: boot.c:442
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#define true
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Definition: pnpreport.c:156
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_In_ PVOID _In_ ULONG Event
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struct _MOUNTDEV_NAME MOUNTDEV_NAME
PVOID DeviceExtension
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Definition: Messaging.c:560
_In_ WDFREQUEST _In_ WDFFILEOBJECT FileObject
Definition: wdfdevice.h:547
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Definition: imports.h:192
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_Function_class_(IO_COMPLETION_ROUTINE)
Definition: volume.c:132
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 GLint GLint j
Definition: glfuncs.h:250
#define IOCTL_MOUNTDEV_QUERY_STABLE_GUID
Definition: imports.h:255
PDRIVER_OBJECT drvobj
Definition: btrfs.c:68
BTRFS_UUID device_uuid
Definition: btrfs.h:183
Status
Definition: gdiplustypes.h:24
#define IOCTL_STORAGE_CHECK_VERIFY
Definition: ntddstor.h:98
uint64_t flags
Definition: btrfs.h:220
struct _LIST_ENTRY * Flink
Definition: typedefs.h:121
#define STATUS_NOT_FOUND
Definition: shellext.h:72
uint64_t children_loaded
Definition: btrfs_drv.h:903
struct _MOUNTDEV_UNIQUE_ID MOUNTDEV_UNIQUE_ID
#define TRACE(s)
Definition: solgame.cpp:4
NTSTATUS vol_file_system_control(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:362
NTSTATUS vol_query_ea(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:318
NTSTATUS vol_flush_buffers(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:330
__wchar_t WCHAR
Definition: xmlstorage.h:180
#define IOCTL_VOLUME_POST_ONLINE
Definition: volume.c:26
#define NT_SUCCESS(StatCode)
Definition: apphelp.c:32
#define STATUS_PENDING
Definition: ntstatus.h:82
LARGE_INTEGER Cylinders
Definition: ntdddisk.h:438
static NTSTATUS vol_is_dynamic(PIRP Irp)
Definition: volume.c:428
#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:2888
ULONG SectorsPerTrack
Definition: ntdddisk.h:441
bool had_drive_letter
Definition: btrfs_drv.h:870
#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:907
static NTSTATUS vol_ioctl_passthrough(volume_device_extension *vde, PIRP Irp)
Definition: volume.c:726
MEDIA_TYPE MediaType
Definition: ntdddisk.h:439
#define STATUS_ACCESS_DENIED
Definition: udferr_usr.h:145
#define __stdcall
Definition: typedefs.h:25
static NTSTATUS vol_get_device_number(volume_device_extension *vde, PIRP Irp)
Definition: volume.c:676
ERESOURCE child_lock
Definition: btrfs_drv.h:904
VOID FASTCALL ExReleaseResourceLite(IN PERESOURCE Resource)
Definition: resource.c:1817
void * notification_entry
Definition: btrfs_drv.h:871
PDEVICE_OBJECT mounted_device
Definition: btrfs_drv.h:884
* PFILE_OBJECT
Definition: iotypes.h:1978
ULONG disk_num
Definition: btrfs_drv.h:872
_In_opt_ PVOID _In_ ULONG _In_ PVOID context
Definition: wdfdriver.h:113
LIST_ENTRY list_entry
Definition: volume.c:1037
uint64_t generation
Definition: btrfs.h:222
#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
PFILE_OBJECT fileobj
Definition: btrfs_drv.h:866
PDEVICE_OBJECT master_devobj
Definition: btrfs.c:69
NTSTATUS vol_close(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:95
static const WCHAR L[]
Definition: oid.c:1250
#define InterlockedDecrement
Definition: armddk.h:52
struct _STORAGE_DEVICE_NUMBER STORAGE_DEVICE_NUMBER
uint64_t dev_id
Definition: btrfs.h:171
void add_volume_device(superblock *sb, PUNICODE_STRING devpath, uint64_t length, ULONG disk_num, ULONG part_num)
Definition: volume.c:1162
NTSTATUS NTAPI IoRegisterPlugPlayNotification(IN IO_NOTIFICATION_EVENT_CATEGORY EventCategory, IN ULONG EventCategoryFlags, IN PVOID EventCategoryData OPTIONAL, IN PDRIVER_OBJECT DriverObject, IN PDRIVER_NOTIFICATION_CALLBACK_ROUTINE CallbackRoutine, IN PVOID Context, OUT PVOID *NotificationEntry)
Definition: pnpnotify.c:249
#define IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS
Definition: ntddvol.h:41
Definition: typedefs.h:119
NTSTATUS vol_directory_control(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:356
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:2691
BYTE uint8_t
Definition: msvideo1.c:66
LARGE_INTEGER Length
Definition: winioctl.h:423
int code
Definition: main.c:75
NTSTATUS vol_query_volume_information(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:336
#define ERR(fmt,...)
Definition: debug.h:110
void free_vol(volume_device_extension *vde)
Definition: volume.c:50
NTSTATUS vol_query_security(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:905
__drv_aliasesMem FORCEINLINE PIO_STACK_LOCATION IoGetCurrentIrpStackLocation(_In_ PIRP Irp)
Definition: iofuncs.h:2789
VOID NTAPI IoDeleteDevice(IN PDEVICE_OBJECT DeviceObject)
Definition: device.c:1251
struct _DISK_GEOMETRY DISK_GEOMETRY
NTSTATUS vol_set_information(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:312
PFILE_OBJECT FileObject
Definition: iotypes.h:3148
NTSTATUS(__stdcall * tIoUnregisterPlugPlayNotificationEx)(PVOID NotificationEntry)
Definition: btrfs_drv.h:1903
VOID NTAPI IoInvalidateDeviceRelations(IN PDEVICE_OBJECT DeviceObject, IN DEVICE_RELATION_TYPE Type)
Definition: pnpmgr.c:2486
ERESOURCE pdo_list_lock
Definition: btrfs.c:108
LIST_ENTRY pdo_list
Definition: btrfs.c:109
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:1040
#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
NTSTATUS vol_set_security(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:911
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:218
#define InitializeListHead(ListHead)
Definition: env_spec_w32.h:944
_In_ PIO_STACK_LOCATION IrpSp
Definition: create.c:4137
PDEVICE_OBJECT busobj
Definition: btrfs.c:69
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:94
uint32_t mount_allow_degraded
Definition: btrfs.c:89
UINT32 uint32_t
Definition: types.h:75
static NTSTATUS vol_is_writable(volume_device_extension *vde)
Definition: volume.c:560
NTSTATUS vol_set_volume_information(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:342
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:1043
#define IRP_MJ_READ
Definition: rdpdr.c:46
#define IRP_DEALLOCATE_BUFFER
volume_device_extension * vde
Definition: btrfs_drv.h:897
NTSTATUS vol_cleanup(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:348
uint64_t size
Definition: btrfs_drv.h:868
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:875
Definition: msctf.idl:510
unsigned int ULONG
Definition: retypes.h:1
NTSTATUS pnp_query_remove_device(PDEVICE_OBJECT DeviceObject, PIRP Irp)
Definition: pnp.c:181
#define IO_NO_INCREMENT
Definition: iotypes.h:581
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)
NTSTATUS remove_drive_letter(PDEVICE_OBJECT mountmgr, PUNICODE_STRING devpath)
Definition: search.c:205
#define RtlZeroMemory(Destination, Length)
Definition: typedefs.h:262
#define InitializeObjectAttributes(p, n, a, r, s)
Definition: reg.c:106
#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
NTSTATUS vol_set_ea(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:324
uint64_t devid
Definition: btrfs_drv.h:863
static NTSTATUS vol_check_verify(volume_device_extension *vde)
Definition: volume.c:444
uint32_t sector_size
Definition: btrfs.h:231
struct _NAMED_PIPE_CREATE_PARAMETERS * Parameters
Definition: iotypes.h:3107
LIST_ENTRY children
Definition: btrfs_drv.h:905
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:398
#define IOCTL_VOLUME_GET_GPT_ATTRIBUTES
Definition: ntddvol.h:56
#define UInt32x32To64(a, b)
Definition: intsafe.h:250
UCHAR UniqueId[1]
Definition: imports.h:139
static NTSTATUS vol_get_gpt_attributes(PIRP Irp)
Definition: volume.c:660
NTSTATUS vol_shutdown(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
Definition: volume.c:899
#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:1038
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