3 * Copyright (C) 2002 ReactOS Team
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program 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 General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
19 * COPYRIGHT: See COPYING in the top level directory
20 * PROJECT: ReactOS kernel
21 * FILE: drivers/filesystems/ntfs/fsctl.c
22 * PURPOSE: NTFS filesystem driver
23 * PROGRAMMER: Eric Kohl
28 /* INCLUDES *****************************************************************/
37 /* FUNCTIONS ****************************************************************/
40 * FUNCTION: Tests if the device contains a filesystem that can be mounted
45 NtfsHasFileSystem(PDEVICE_OBJECT DeviceToMount
)
47 PARTITION_INFORMATION PartitionInfo
;
48 DISK_GEOMETRY DiskGeometry
;
49 ULONG ClusterSize
, Size
, k
;
50 PBOOT_SECTOR BootSector
;
53 DPRINT1("NtfsHasFileSystem() called\n");
55 Size
= sizeof(DISK_GEOMETRY
);
56 Status
= NtfsDeviceIoControl(DeviceToMount
,
57 IOCTL_DISK_GET_DRIVE_GEOMETRY
,
63 if (!NT_SUCCESS(Status
))
65 DPRINT1("NtfsDeviceIoControl() failed (Status %lx)\n", Status
);
69 if (DiskGeometry
.MediaType
== FixedMedia
)
71 /* We have found a hard disk */
72 Size
= sizeof(PARTITION_INFORMATION
);
73 Status
= NtfsDeviceIoControl(DeviceToMount
,
74 IOCTL_DISK_GET_PARTITION_INFO
,
80 if (!NT_SUCCESS(Status
))
82 DPRINT1("NtfsDeviceIoControl() failed (Status %lx)\n", Status
);
86 if (PartitionInfo
.PartitionType
!= PARTITION_IFS
)
88 DPRINT1("Invalid partition type\n");
89 return STATUS_UNRECOGNIZED_VOLUME
;
93 DPRINT1("BytesPerSector: %lu\n", DiskGeometry
.BytesPerSector
);
94 BootSector
= ExAllocatePoolWithTag(NonPagedPool
,
95 DiskGeometry
.BytesPerSector
,
97 if (BootSector
== NULL
)
99 return STATUS_INSUFFICIENT_RESOURCES
;
102 Status
= NtfsReadSectors(DeviceToMount
,
105 DiskGeometry
.BytesPerSector
,
108 if (!NT_SUCCESS(Status
))
114 * Check values of different fields. If those fields have not expected
115 * values, we fail, to avoid mounting partitions that Windows won't mount.
118 /* OEMID: this field must be NTFS */
119 if (RtlCompareMemory(BootSector
->OEMID
, "NTFS ", 8) != 8)
121 DPRINT1("Failed with NTFS-identifier: [%.8s]\n", BootSector
->OEMID
);
122 Status
= STATUS_UNRECOGNIZED_VOLUME
;
126 /* Unused0: this field must be COMPLETELY null */
127 for (k
= 0; k
< 7; k
++)
129 if (BootSector
->BPB
.Unused0
[k
] != 0)
131 DPRINT1("Failed in field Unused0: [%.7s]\n", BootSector
->BPB
.Unused0
);
132 Status
= STATUS_UNRECOGNIZED_VOLUME
;
137 /* Unused3: this field must be COMPLETELY null */
138 for (k
= 0; k
< 4; k
++)
140 if (BootSector
->BPB
.Unused3
[k
] != 0)
142 DPRINT1("Failed in field Unused3: [%.4s]\n", BootSector
->BPB
.Unused3
);
143 Status
= STATUS_UNRECOGNIZED_VOLUME
;
148 /* Check cluster size */
149 ClusterSize
= BootSector
->BPB
.BytesPerSector
* BootSector
->BPB
.SectorsPerCluster
;
150 if (ClusterSize
!= 512 && ClusterSize
!= 1024 &&
151 ClusterSize
!= 2048 && ClusterSize
!= 4096 &&
152 ClusterSize
!= 8192 && ClusterSize
!= 16384 &&
153 ClusterSize
!= 32768 && ClusterSize
!= 65536)
155 DPRINT1("Cluster size failed: %hu, %hu, %hu\n",
156 BootSector
->BPB
.BytesPerSector
,
157 BootSector
->BPB
.SectorsPerCluster
,
159 Status
= STATUS_UNRECOGNIZED_VOLUME
;
164 ExFreePool(BootSector
);
172 NtfsGetVolumeData(PDEVICE_OBJECT DeviceObject
,
173 PDEVICE_EXTENSION DeviceExt
)
175 DISK_GEOMETRY DiskGeometry
;
176 PFILE_RECORD_HEADER MftRecord
;
177 PFILE_RECORD_HEADER VolumeRecord
;
178 PVOLINFO_ATTRIBUTE VolumeInfo
;
179 PBOOT_SECTOR BootSector
;
180 PATTRIBUTE Attribute
;
182 PNTFS_INFO NtfsInfo
= &DeviceExt
->NtfsInfo
;
185 DPRINT("NtfsGetVolumeData() called\n");
187 Size
= sizeof(DISK_GEOMETRY
);
188 Status
= NtfsDeviceIoControl(DeviceObject
,
189 IOCTL_DISK_GET_DRIVE_GEOMETRY
,
195 if (!NT_SUCCESS(Status
))
197 DPRINT("NtfsDeviceIoControl() failed (Status %lx)\n", Status
);
201 DPRINT("BytesPerSector: %lu\n", DiskGeometry
.BytesPerSector
);
202 BootSector
= ExAllocatePoolWithTag(NonPagedPool
,
203 DiskGeometry
.BytesPerSector
,
205 if (BootSector
== NULL
)
207 return STATUS_INSUFFICIENT_RESOURCES
;
210 Status
= NtfsReadSectors(DeviceObject
,
211 0, /* Partition boot sector */
213 DiskGeometry
.BytesPerSector
,
216 if (!NT_SUCCESS(Status
))
218 ExFreePool(BootSector
);
222 /* Read data from the bootsector */
223 NtfsInfo
->BytesPerSector
= BootSector
->BPB
.BytesPerSector
;
224 NtfsInfo
->SectorsPerCluster
= BootSector
->BPB
.SectorsPerCluster
;
225 NtfsInfo
->BytesPerCluster
= BootSector
->BPB
.BytesPerSector
* BootSector
->BPB
.SectorsPerCluster
;
226 NtfsInfo
->SectorCount
= BootSector
->EBPB
.SectorCount
;
228 NtfsInfo
->MftStart
.QuadPart
= BootSector
->EBPB
.MftLocation
;
229 NtfsInfo
->MftMirrStart
.QuadPart
= BootSector
->EBPB
.MftMirrLocation
;
230 NtfsInfo
->SerialNumber
= BootSector
->EBPB
.SerialNumber
;
231 if (BootSector
->EBPB
.ClustersPerMftRecord
> 0)
232 NtfsInfo
->BytesPerFileRecord
= BootSector
->EBPB
.ClustersPerMftRecord
* NtfsInfo
->BytesPerCluster
;
234 NtfsInfo
->BytesPerFileRecord
= 1 << (-BootSector
->EBPB
.ClustersPerMftRecord
);
235 if (BootSector
->EBPB
.ClustersPerIndexRecord
> 0)
236 NtfsInfo
->BytesPerIndexRecord
= BootSector
->EBPB
.ClustersPerIndexRecord
* NtfsInfo
->BytesPerCluster
;
238 NtfsInfo
->BytesPerIndexRecord
= 1 << (-BootSector
->EBPB
.ClustersPerIndexRecord
);
240 DPRINT("Boot sector information:\n");
241 DPRINT(" BytesPerSector: %hu\n", BootSector
->BPB
.BytesPerSector
);
242 DPRINT(" SectorsPerCluster: %hu\n", BootSector
->BPB
.SectorsPerCluster
);
243 DPRINT(" SectorCount: %I64u\n", BootSector
->EBPB
.SectorCount
);
244 DPRINT(" MftStart: %I64u\n", BootSector
->EBPB
.MftLocation
);
245 DPRINT(" MftMirrStart: %I64u\n", BootSector
->EBPB
.MftMirrLocation
);
246 DPRINT(" ClustersPerMftRecord: %lx\n", BootSector
->EBPB
.ClustersPerMftRecord
);
247 DPRINT(" ClustersPerIndexRecord: %lx\n", BootSector
->EBPB
.ClustersPerIndexRecord
);
248 DPRINT(" SerialNumber: %I64x\n", BootSector
->EBPB
.SerialNumber
);
250 ExFreePool(BootSector
);
252 MftRecord
= ExAllocatePoolWithTag(NonPagedPool
,
253 NtfsInfo
->BytesPerFileRecord
,
255 if (MftRecord
== NULL
)
257 return STATUS_INSUFFICIENT_RESOURCES
;
260 Status
= NtfsReadSectors(DeviceObject
,
261 NtfsInfo
->MftStart
.u
.LowPart
* NtfsInfo
->SectorsPerCluster
,
262 NtfsInfo
->BytesPerFileRecord
/ NtfsInfo
->BytesPerSector
,
263 NtfsInfo
->BytesPerSector
,
266 if (!NT_SUCCESS(Status
))
268 ExFreePool(MftRecord
);
272 VolumeRecord
= ExAllocatePoolWithTag(NonPagedPool
,
273 NtfsInfo
->BytesPerFileRecord
,
275 if (VolumeRecord
== NULL
)
277 ExFreePool(MftRecord
);
278 return STATUS_INSUFFICIENT_RESOURCES
;
281 /* Read Volume File (MFT index 3) */
282 DeviceExt
->StorageDevice
= DeviceObject
;
283 Status
= ReadFileRecord(DeviceExt
,
287 if (!NT_SUCCESS(Status
))
289 ExFreePool(MftRecord
);
293 /* Enumerate attributes */
294 NtfsDumpFileAttributes (MftRecord
);
296 /* Enumerate attributes */
297 NtfsDumpFileAttributes (VolumeRecord
);
299 /* Get volume name */
300 Attribute
= FindAttribute (VolumeRecord
, AttributeVolumeName
, NULL
);
301 DPRINT("Attribute %p\n", Attribute
);
303 if (Attribute
!= NULL
&& ((PRESIDENT_ATTRIBUTE
)Attribute
)->ValueLength
!= 0)
305 DPRINT("Data length %lu\n", AttributeDataLength (Attribute
));
306 NtfsInfo
->VolumeLabelLength
=
307 min (((PRESIDENT_ATTRIBUTE
)Attribute
)->ValueLength
, MAXIMUM_VOLUME_LABEL_LENGTH
);
308 RtlCopyMemory(NtfsInfo
->VolumeLabel
,
309 (PVOID
)((ULONG_PTR
)Attribute
+ ((PRESIDENT_ATTRIBUTE
)Attribute
)->ValueOffset
),
310 NtfsInfo
->VolumeLabelLength
);
314 NtfsInfo
->VolumeLabelLength
= 0;
317 /* Get volume information */
318 Attribute
= FindAttribute (VolumeRecord
, AttributeVolumeInformation
, NULL
);
319 DPRINT("Attribute %p\n", Attribute
);
321 if (Attribute
!= NULL
&& ((PRESIDENT_ATTRIBUTE
)Attribute
)->ValueLength
!= 0)
323 DPRINT("Data length %lu\n", AttributeDataLength (Attribute
));
324 VolumeInfo
= (PVOID
)((ULONG_PTR
)Attribute
+ ((PRESIDENT_ATTRIBUTE
)Attribute
)->ValueOffset
);
326 NtfsInfo
->MajorVersion
= VolumeInfo
->MajorVersion
;
327 NtfsInfo
->MinorVersion
= VolumeInfo
->MinorVersion
;
328 NtfsInfo
->Flags
= VolumeInfo
->Flags
;
331 ExFreePool(MftRecord
);
332 ExFreePool(VolumeRecord
);
340 NtfsMountVolume(PDEVICE_OBJECT DeviceObject
,
343 PDEVICE_OBJECT NewDeviceObject
= NULL
;
344 PDEVICE_OBJECT DeviceToMount
;
345 PIO_STACK_LOCATION Stack
;
346 PNTFS_FCB Fcb
= NULL
;
347 PNTFS_CCB Ccb
= NULL
;
348 PNTFS_VCB Vcb
= NULL
;
351 DPRINT1("NtfsMountVolume() called\n");
353 if (DeviceObject
!= NtfsGlobalData
->DeviceObject
)
355 Status
= STATUS_INVALID_DEVICE_REQUEST
;
359 Stack
= IoGetCurrentIrpStackLocation(Irp
);
360 DeviceToMount
= Stack
->Parameters
.MountVolume
.DeviceObject
;
362 Status
= NtfsHasFileSystem(DeviceToMount
);
363 if (!NT_SUCCESS(Status
))
368 Status
= IoCreateDevice(NtfsGlobalData
->DriverObject
,
369 sizeof(DEVICE_EXTENSION
),
371 FILE_DEVICE_DISK_FILE_SYSTEM
,
375 if (!NT_SUCCESS(Status
))
378 NewDeviceObject
->Flags
|= DO_DIRECT_IO
;
379 Vcb
= (PVOID
)NewDeviceObject
->DeviceExtension
;
380 RtlZeroMemory(Vcb
, sizeof(NTFS_VCB
));
382 Vcb
->Identifier
.Type
= NTFS_TYPE_VCB
;
383 Vcb
->Identifier
.Size
= sizeof(NTFS_TYPE_VCB
);
385 Status
= NtfsGetVolumeData(DeviceToMount
,
387 if (!NT_SUCCESS(Status
))
390 NewDeviceObject
->Vpb
= DeviceToMount
->Vpb
;
392 Vcb
->StorageDevice
= DeviceToMount
;
393 Vcb
->StorageDevice
->Vpb
->DeviceObject
= NewDeviceObject
;
394 Vcb
->StorageDevice
->Vpb
->RealDevice
= Vcb
->StorageDevice
;
395 Vcb
->StorageDevice
->Vpb
->Flags
|= VPB_MOUNTED
;
396 NewDeviceObject
->StackSize
= Vcb
->StorageDevice
->StackSize
+ 1;
397 NewDeviceObject
->Flags
&= ~DO_DEVICE_INITIALIZING
;
399 Vcb
->StreamFileObject
= IoCreateStreamFileObject(NULL
,
402 InitializeListHead(&Vcb
->FcbListHead
);
404 Fcb
= NtfsCreateFCB(NULL
, Vcb
);
407 Status
= STATUS_INSUFFICIENT_RESOURCES
;
411 Ccb
= ExAllocatePoolWithTag(NonPagedPool
,
416 Status
= STATUS_INSUFFICIENT_RESOURCES
;
420 RtlZeroMemory(Ccb
, sizeof(NTFS_CCB
));
422 Ccb
->Identifier
.Type
= NTFS_TYPE_CCB
;
423 Ccb
->Identifier
.Size
= sizeof(NTFS_TYPE_CCB
);
425 Vcb
->StreamFileObject
->FsContext
= Fcb
;
426 Vcb
->StreamFileObject
->FsContext2
= Ccb
;
427 Vcb
->StreamFileObject
->SectionObjectPointer
= &Fcb
->SectionObjectPointers
;
428 Vcb
->StreamFileObject
->PrivateCacheMap
= NULL
;
429 Vcb
->StreamFileObject
->Vpb
= Vcb
->Vpb
;
430 Ccb
->PtrFileObject
= Vcb
->StreamFileObject
;
431 Fcb
->FileObject
= Vcb
->StreamFileObject
;
432 Fcb
->Vcb
= (PDEVICE_EXTENSION
)Vcb
->StorageDevice
;
434 Fcb
->Flags
= FCB_IS_VOLUME_STREAM
;
436 Fcb
->RFCB
.FileSize
.QuadPart
= Vcb
->NtfsInfo
.SectorCount
* Vcb
->NtfsInfo
.BytesPerSector
;
437 Fcb
->RFCB
.ValidDataLength
.QuadPart
= Vcb
->NtfsInfo
.SectorCount
* Vcb
->NtfsInfo
.BytesPerSector
;
438 Fcb
->RFCB
.AllocationSize
.QuadPart
= Vcb
->NtfsInfo
.SectorCount
* Vcb
->NtfsInfo
.BytesPerSector
; /* Correct? */
440 // Fcb->Entry.ExtentLocationL = 0;
441 // Fcb->Entry.DataLengthL = DeviceExt->CdInfo.VolumeSpaceSize * BLOCKSIZE;
443 CcInitializeCacheMap(Vcb
->StreamFileObject
,
444 (PCC_FILE_SIZES
)(&Fcb
->RFCB
.AllocationSize
),
446 &(NtfsGlobalData
->CacheMgrCallbacks
),
449 ExInitializeResourceLite(&Vcb
->DirResource
);
451 KeInitializeSpinLock(&Vcb
->FcbListLock
);
453 /* Get serial number */
454 NewDeviceObject
->Vpb
->SerialNumber
= Vcb
->NtfsInfo
.SerialNumber
;
456 /* Get volume label */
457 NewDeviceObject
->Vpb
->VolumeLabelLength
= Vcb
->NtfsInfo
.VolumeLabelLength
;
458 RtlCopyMemory(NewDeviceObject
->Vpb
->VolumeLabel
,
459 Vcb
->NtfsInfo
.VolumeLabel
,
460 Vcb
->NtfsInfo
.VolumeLabelLength
);
462 Status
= STATUS_SUCCESS
;
465 if (!NT_SUCCESS(Status
))
468 if (Vcb
&& Vcb
->StreamFileObject
)
469 ObDereferenceObject(Vcb
->StreamFileObject
);
478 IoDeleteDevice(NewDeviceObject
);
481 DPRINT("NtfsMountVolume() done (Status: %lx)\n", Status
);
489 NtfsVerifyVolume(PDEVICE_OBJECT DeviceObject
,
492 UNREFERENCED_PARAMETER(DeviceObject
);
493 UNREFERENCED_PARAMETER(Irp
);
494 DPRINT1("NtfsVerifyVolume() called\n");
495 return STATUS_WRONG_VOLUME
;
501 NtfsFsdFileSystemControl(PDEVICE_OBJECT DeviceObject
,
504 PIO_STACK_LOCATION Stack
;
507 DPRINT1("NtfsFileSystemControl() called\n");
509 Stack
= IoGetCurrentIrpStackLocation(Irp
);
511 switch (Stack
->MinorFunction
)
513 case IRP_MN_KERNEL_CALL
:
514 case IRP_MN_USER_FS_REQUEST
:
515 DPRINT("NTFS: IRP_MN_USER_FS_REQUEST/IRP_MN_KERNEL_CALL\n");
516 Status
= STATUS_INVALID_DEVICE_REQUEST
;
519 case IRP_MN_MOUNT_VOLUME
:
520 DPRINT("NTFS: IRP_MN_MOUNT_VOLUME\n");
521 Status
= NtfsMountVolume(DeviceObject
, Irp
);
524 case IRP_MN_VERIFY_VOLUME
:
525 DPRINT1("NTFS: IRP_MN_VERIFY_VOLUME\n");
526 Status
= NtfsVerifyVolume(DeviceObject
, Irp
);
530 DPRINT("NTFS FSC: MinorFunction %d\n", Stack
->MinorFunction
);
531 Status
= STATUS_INVALID_DEVICE_REQUEST
;
535 Irp
->IoStatus
.Status
= Status
;
536 Irp
->IoStatus
.Information
= 0;
538 IoCompleteRequest(Irp
, IO_NO_INCREMENT
);