reactos/ntoskrnl/io/rawfs.c

   1 /* $Id: rawfs.c,v 1.3 2003/06/07 11:34:36 chorns Exp $
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS kernel
   5  * FILE:            ntoskrnl/io/rawfs.c
   6  * PURPOSE:         Raw filesystem driver
   7  * PROGRAMMER:      Casper S. Hornstrup (chorns@users.sourceforge.net)
   8  * UPDATE HISTORY:
   9  *                  Created 13/04/2003
  10  */
  11
  12 /* INCLUDES *****************************************************************/
  13
  14 #include <ddk/ntddk.h>
  15 #include <ddk/ntifs.h>
  16 #include <reactos/bugcodes.h>
  17
  18 #define NDEBUG
  19 #include <internal/debug.h>
  20
  21 /* TYPES *******************************************************************/
  22
  23 typedef struct _RAWFS_GLOBAL_DATA
  24 {
  25   PDRIVER_OBJECT DriverObject;
  26   PDEVICE_OBJECT DeviceObject;
  27   ULONG Flags;
  28   ERESOURCE VolumeListLock;
  29   LIST_ENTRY VolumeListHead;
  30   NPAGED_LOOKASIDE_LIST FcbLookasideList;
  31   NPAGED_LOOKASIDE_LIST CcbLookasideList;
  32 } RAWFS_GLOBAL_DATA, *PRAWFS_GLOBAL_DATA, VCB, *PVCB;
  33
  34 typedef struct _RAWFS_DEVICE_EXTENSION
  35 {
  36   KSPIN_LOCK FcbListLock;
  37   LIST_ENTRY FcbListHead;
  38   PDEVICE_OBJECT StorageDevice;
  39   ULONG Flags;
  40   struct _RAWFS_FCB *VolumeFcb;
  41   LIST_ENTRY VolumeListEntry;
  42 } RAWFS_DEVICE_EXTENSION, *PRAWFS_DEVICE_EXTENSION;
  43
  44 typedef struct _RAWFS_IRP_CONTEXT
  45 {
  46    PIRP Irp;
  47    PDEVICE_OBJECT DeviceObject;
  48    PRAWFS_DEVICE_EXTENSION DeviceExt;
  49    ULONG Flags;
  50    WORK_QUEUE_ITEM WorkQueueItem;
  51    PIO_STACK_LOCATION Stack;
  52    UCHAR MajorFunction;
  53    UCHAR MinorFunction;
  54    PFILE_OBJECT FileObject;
  55 } RAWFS_IRP_CONTEXT, *PRAWFS_IRP_CONTEXT;
  56
  57 #define IRPCONTEXT_CANWAIT  0x0001
  58
  59 #define FCB_CACHE_INITIALIZED   0x0001
  60 #define FCB_DELETE_PENDING      0x0002
  61 #define FCB_IS_FAT              0x0004
  62 #define FCB_IS_PAGE_FILE        0x0008
  63 #define FCB_IS_VOLUME           0x0010
  64
  65 typedef struct _RAWFS_FCB
  66 {
  67   /* Start FCB header required by ReactOS/Windows NT */
  68   FSRTL_COMMON_FCB_HEADER RFCB;
  69   SECTION_OBJECT_POINTERS SectionObjectPointers;
  70   ERESOURCE MainResource;
  71   ERESOURCE PagingIoResource;
  72   /* End FCB header required by ReactOS/Windows NT */
  73
  74   /* Reference count */
  75   LONG RefCount;
  76
  77   /* List of FCB's for this volume */
  78   LIST_ENTRY FcbListEntry;
  79
  80   /* Pointer to the parent fcb */
  81   struct _RAWFS_FCB* ParentFcb;
  82
  83   /* Flags for the FCB */
  84   ULONG Flags;
  85
  86   /* Pointer to the file object which has initialized the fcb */
  87   PFILE_OBJECT FileObject;
  88 } RAWFS_FCB, *PRAWFS_FCB;
  89
  90 typedef struct _RAWFS_CCB
  91 {
  92   LARGE_INTEGER CurrentByteOffset;
  93 } RAWFS_CCB, *PRAWFS_CCB;
  94
  95 /* GLOBALS ******************************************************************/
  96
  97 #define TAG_IRP TAG('R', 'I', 'R', 'P')
  98
  99 static PDRIVER_OBJECT RawFsDriverObject;
 100 static PDEVICE_OBJECT DiskDeviceObject;
 101 static PDEVICE_OBJECT CdromDeviceObject;
 102 static PDEVICE_OBJECT TapeDeviceObject;
 103 static NPAGED_LOOKASIDE_LIST IrpContextLookasideList;
 104 static LONG RawFsQueueCount = 0;
 105
 106 /* FUNCTIONS *****************************************************************/
 107
 108 BOOLEAN
 109 RawFsIsRawFileSystemDeviceObject(IN PDEVICE_OBJECT DeviceObject)
 110 {
 111   DPRINT("RawFsIsRawFileSystemDeviceObject(DeviceObject %x)\n", DeviceObject);
 112
 113   if (DeviceObject == DiskDeviceObject)
 114     return TRUE;
 115   if (DeviceObject == CdromDeviceObject)
 116     return TRUE;
 117   if (DeviceObject == TapeDeviceObject)
 118     return TRUE;
 119   return FALSE;
 120 }
 121
 122 static NTSTATUS
 123 RawFsDispatchRequest(IN PRAWFS_IRP_CONTEXT IrpContext);
 124
 125 /*static */NTSTATUS
 126 RawFsReadDisk(IN PDEVICE_OBJECT pDeviceObject,
 127   IN PLARGE_INTEGER ReadOffset,
 128   IN ULONG ReadLength,
 129   IN OUT PUCHAR Buffer)
 130 {
 131   IO_STATUS_BLOCK IoStatus;
 132   NTSTATUS Status;
 133   KEVENT Event;
 134   PIRP Irp;
 135
 136   KeInitializeEvent(&Event, NotificationEvent, FALSE);
 137
 138   DPRINT("RawFsReadDisk(pDeviceObject %x, Offset %I64x, Length %d, Buffer %x)\n",
 139           pDeviceObject, ReadOffset->QuadPart, ReadLength, Buffer);
 140
 141   DPRINT ("Building synchronous FSD Request...\n");
 142   Irp = IoBuildSynchronousFsdRequest(IRP_MJ_READ,
 143     pDeviceObject,
 144     Buffer,
 145     ReadLength,
 146     ReadOffset,
 147     &Event,
 148     &IoStatus);
 149   if (Irp == NULL)
 150     {
 151       DPRINT("IoBuildSynchronousFsdRequest() failed\n");
 152       return STATUS_UNSUCCESSFUL;
 153     }
 154
 155   DPRINT("Calling IO Driver... with irp %x\n", Irp);
 156   Status = IoCallDriver(pDeviceObject, Irp);
 157
 158   DPRINT("Waiting for IO Operation for %x\n", Irp);
 159   if (Status == STATUS_PENDING)
 160     {
 161       DPRINT("Operation pending\n");
 162       KeWaitForSingleObject (&Event, Suspended, KernelMode, FALSE, NULL);
 163       DPRINT("Getting IO Status... for %x\n", Irp);
 164       Status = IoStatus.Status;
 165     }
 166
 167   if (!NT_SUCCESS(Status))
 168     {
 169       DPRINT("RawFsReadDisk() failed. Status %x\n", Status);
 170       DPRINT("(pDeviceObject %x, Offset %I64x, Size %d, Buffer %x\n",
 171               pDeviceObject, ReadOffset->QuadPart, ReadLength, Buffer);
 172       return Status;
 173     }
 174   DPRINT("Block request succeeded for %x\n", Irp);
 175   return STATUS_SUCCESS;
 176 }
 177
 178 /*static */NTSTATUS
 179 RawFsWriteDisk(IN PDEVICE_OBJECT pDeviceObject,
 180   IN PLARGE_INTEGER WriteOffset,
 181   IN ULONG WriteLength,
 182   IN PUCHAR Buffer)
 183 {
 184   IO_STATUS_BLOCK IoStatus;
 185   NTSTATUS Status;
 186   KEVENT Event;
 187   PIRP Irp;
 188
 189   DPRINT("RawFsWriteDisk(pDeviceObject %x, Offset %I64x, Size %d, Buffer %x)\n",
 190           pDeviceObject, WriteOffset->QuadPart, WriteLength, Buffer);
 191
 192   KeInitializeEvent(&Event, NotificationEvent, FALSE);
 193
 194   DPRINT("Building synchronous FSD Request...\n");
 195   Irp = IoBuildSynchronousFsdRequest(IRP_MJ_WRITE,
 196     pDeviceObject,
 197     Buffer,
 198     WriteLength,
 199     WriteOffset,
 200     &Event,
 201     &IoStatus);
 202   if (!Irp)
 203     {
 204       DPRINT("IoBuildSynchronousFsdRequest()\n");
 205       return(STATUS_UNSUCCESSFUL);
 206     }
 207
 208   DPRINT("Calling IO Driver...\n");
 209   Status = IoCallDriver(pDeviceObject, Irp);
 210
 211   DPRINT("Waiting for IO Operation...\n");
 212   if (Status == STATUS_PENDING)
 213     {
 214       KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
 215       DPRINT("Getting IO Status...\n");
 216       Status = IoStatus.Status;
 217     }
 218   if (!NT_SUCCESS(Status))
 219     {
 220       DPRINT("RawFsWriteDisk() failed. Status %x\n", Status);
 221       DPRINT("(pDeviceObject %x, Offset %I64x, Size %d, Buffer %x\n",
 222               pDeviceObject, WriteOffset->QuadPart, WriteLength, Buffer);
 223       return Status;
 224     }
 225
 226   return STATUS_SUCCESS;
 227 }
 228
 229 static NTSTATUS
 230 RawFsBlockDeviceIoControl(IN PDEVICE_OBJECT DeviceObject,
 231   IN ULONG CtlCode,
 232   IN PVOID InputBuffer,
 233   IN ULONG InputBufferSize,
 234   IN OUT PVOID OutputBuffer,
 235   IN OUT PULONG pOutputBufferSize)
 236 {
 237         ULONG OutputBufferSize = 0;
 238         KEVENT Event;
 239         PIRP Irp;
 240         IO_STATUS_BLOCK IoStatus;
 241         NTSTATUS Status;
 242
 243         DPRINT("RawFsBlockDeviceIoControl(DeviceObject %x, CtlCode %x, "
 244     "InputBuffer %x, InputBufferSize %x, OutputBuffer %x, "
 245     "POutputBufferSize %x (%x)\n", DeviceObject, CtlCode,
 246     InputBuffer, InputBufferSize, OutputBuffer, pOutputBufferSize,
 247     pOutputBufferSize ? *pOutputBufferSize : 0);
 248
 249         if (pOutputBufferSize)
 250         {
 251                 OutputBufferSize = *pOutputBufferSize;
 252         }
 253
 254         KeInitializeEvent(&Event, NotificationEvent, FALSE);
 255
 256         DPRINT("Building device I/O control request ...\n");
 257         Irp = IoBuildDeviceIoControlRequest(CtlCode,
 258     DeviceObject,
 259     InputBuffer,
 260     InputBufferSize,
 261     OutputBuffer,
 262     OutputBufferSize,
 263     FALSE,
 264     &Event,
 265     &IoStatus);
 266         if (Irp == NULL)
 267         {
 268                 DPRINT("IoBuildDeviceIoControlRequest failed\n");
 269                 return STATUS_INSUFFICIENT_RESOURCES;
 270         }
 271
 272         DPRINT("Calling IO Driver... with irp %x\n", Irp);
 273         Status = IoCallDriver(DeviceObject, Irp);
 274
 275         DPRINT("Waiting for IO Operation for %x\n", Irp);
 276         if (Status == STATUS_PENDING)
 277     {
 278         DPRINT("Operation pending\n");
 279         KeWaitForSingleObject (&Event, Suspended, KernelMode, FALSE, NULL);
 280         DPRINT("Getting IO Status... for %x\n", Irp);
 281         Status = IoStatus.Status;
 282     }
 283         if (OutputBufferSize)
 284         {
 285                 *pOutputBufferSize = OutputBufferSize;
 286         }
 287         DPRINT("Returning Status %x\n", Status);
 288         return Status;
 289 }
 290
 291 static PRAWFS_FCB
 292 RawFsNewFCB(IN PRAWFS_GLOBAL_DATA pGlobalData)
 293 {
 294   PRAWFS_FCB Fcb;
 295
 296   Fcb = ExAllocateFromNPagedLookasideList(&pGlobalData->FcbLookasideList);
 297   memset(Fcb, 0, sizeof(RAWFS_FCB));
 298   ExInitializeResourceLite(&Fcb->PagingIoResource);
 299   ExInitializeResourceLite(&Fcb->MainResource);
 300 //  FsRtlInitializeFileLock(&Fcb->FileLock, NULL, NULL);
 301   return Fcb;
 302 }
 303
 304 static VOID
 305 RawFsDestroyFCB(IN PRAWFS_GLOBAL_DATA pGlobalData, IN PRAWFS_FCB pFcb)
 306 {
 307   //FsRtlUninitializeFileLock(&pFcb->FileLock);
 308   ExDeleteResourceLite(&pFcb->PagingIoResource);
 309   ExDeleteResourceLite(&pFcb->MainResource);
 310   ExFreeToNPagedLookasideList(&pGlobalData->FcbLookasideList, pFcb);
 311 }
 312
 313 static PRAWFS_CCB
 314 RawFsNewCCB(PRAWFS_GLOBAL_DATA pGlobalData)
 315 {
 316   PRAWFS_CCB Ccb;
 317
 318   Ccb = ExAllocateFromNPagedLookasideList(&pGlobalData->CcbLookasideList);
 319   memset(Ccb, 0, sizeof(RAWFS_CCB));
 320   return Ccb;
 321 }
 322
 323 /*static */VOID
 324 RawFsDestroyCCB(PRAWFS_GLOBAL_DATA pGlobalData, PRAWFS_CCB pCcb)
 325 {
 326   ExFreeToNPagedLookasideList(&pGlobalData->CcbLookasideList, pCcb);
 327 }
 328
 329 static PRAWFS_IRP_CONTEXT
 330 RawFsAllocateIrpContext(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
 331 {
 332   PRAWFS_GLOBAL_DATA GlobalData;
 333   PRAWFS_IRP_CONTEXT IrpContext;
 334   UCHAR MajorFunction;
 335
 336   DPRINT("RawFsAllocateIrpContext(DeviceObject %x, Irp %x)\n", DeviceObject, Irp);
 337
 338   assert(DeviceObject);
 339   assert(Irp);
 340
 341   GlobalData = (PRAWFS_GLOBAL_DATA) DeviceObject->DeviceExtension;
 342   IrpContext = ExAllocateFromNPagedLookasideList(&IrpContextLookasideList);
 343   if (IrpContext)
 344     {
 345       RtlZeroMemory(IrpContext, sizeof(IrpContext));
 346       IrpContext->Irp = Irp;
 347       IrpContext->DeviceObject = DeviceObject;
 348       IrpContext->DeviceExt = DeviceObject->DeviceExtension;
 349       IrpContext->Stack = IoGetCurrentIrpStackLocation(Irp);
 350       assert(IrpContext->Stack);
 351       MajorFunction = IrpContext->MajorFunction = IrpContext->Stack->MajorFunction;
 352       IrpContext->MinorFunction = IrpContext->Stack->MinorFunction;
 353       IrpContext->FileObject = IrpContext->Stack->FileObject;
 354       if (MajorFunction == IRP_MJ_FILE_SYSTEM_CONTROL ||
 355         MajorFunction == IRP_MJ_DEVICE_CONTROL ||
 356         MajorFunction == IRP_MJ_SHUTDOWN)
 357         {
 358           IrpContext->Flags |= IRPCONTEXT_CANWAIT;
 359         }
 360       else if (MajorFunction != IRP_MJ_CLEANUP &&
 361         MajorFunction != IRP_MJ_CLOSE &&
 362         IoIsOperationSynchronous(Irp))
 363         {
 364           IrpContext->Flags |= IRPCONTEXT_CANWAIT;
 365         }
 366     }
 367   return IrpContext;
 368 }
 369
 370 static VOID
 371 RawFsFreeIrpContext(IN PRAWFS_IRP_CONTEXT IrpContext)
 372 {
 373   DPRINT("RawFsFreeIrpContext(IrpContext %x)\n", IrpContext);
 374
 375   assert(IrpContext);
 376
 377   ExFreeToNPagedLookasideList(&IrpContextLookasideList, IrpContext);
 378 }
 379
 380 static VOID
 381 STDCALL RawFsDoRequest(PVOID IrpContext)
 382 {
 383   ULONG Count;
 384
 385   DPRINT("RawFsDoRequest(IrpContext %x), MajorFunction %x, %d\n",
 386     IrpContext, ((PRAWFS_IRP_CONTEXT) IrpContext)->MajorFunction, Count);
 387
 388   Count = InterlockedDecrement(&RawFsQueueCount);
 389   RawFsDispatchRequest((PRAWFS_IRP_CONTEXT) IrpContext);
 390 }
 391
 392 static NTSTATUS
 393 RawFsQueueRequest(PRAWFS_IRP_CONTEXT IrpContext)
 394 {
 395   ULONG Count;
 396
 397   DPRINT("RawFsQueueRequest (IrpContext %x), %d\n", IrpContext, Count);
 398
 399   assert(IrpContext != NULL);
 400   assert(IrpContext->Irp != NULL);
 401
 402   Count = InterlockedIncrement(&RawFsQueueCount);
 403
 404   IrpContext->Flags |= IRPCONTEXT_CANWAIT;
 405   IoMarkIrpPending (IrpContext->Irp);
 406   ExInitializeWorkItem (&IrpContext->WorkQueueItem, RawFsDoRequest, IrpContext);
 407   ExQueueWorkItem(&IrpContext->WorkQueueItem, CriticalWorkQueue);
 408   return STATUS_PENDING;
 409 }
 410
 411 static NTSTATUS
 412 RawFsClose(IN PRAWFS_IRP_CONTEXT IrpContext)
 413 {
 414   DPRINT("RawFsClose(IrpContext %x)\n", IrpContext);
 415   UNIMPLEMENTED
 416   return STATUS_NOT_IMPLEMENTED;
 417 }
 418
 419 static NTSTATUS
 420 RawFsCreateFile(IN PRAWFS_IRP_CONTEXT IrpContext)
 421 {
 422   PRAWFS_DEVICE_EXTENSION DeviceExt;
 423   PRAWFS_GLOBAL_DATA GlobalData;
 424   PIO_STACK_LOCATION IoSp;
 425   PFILE_OBJECT FileObject;
 426   ULONG RequestedDisposition;
 427   ULONG RequestedOptions;
 428   PRAWFS_FCB pFcb;
 429   PRAWFS_CCB pCcb;
 430
 431   GlobalData = (PRAWFS_GLOBAL_DATA) IrpContext->DeviceObject->DeviceExtension;
 432   IoSp = IoGetCurrentIrpStackLocation(IrpContext->Irp);
 433   RequestedDisposition = ((IoSp->Parameters.Create.Options >> 24) & 0xff);
 434   RequestedOptions = IoSp->Parameters.Create.Options & FILE_VALID_OPTION_FLAGS;
 435   FileObject = IoSp->FileObject;
 436   DeviceExt = IrpContext->DeviceObject->DeviceExtension;
 437
 438   if (FileObject->FileName.Length == 0 &&
 439       FileObject->RelatedFileObject == NULL)
 440     {
 441       /* This a open operation for the volume itself */
 442       if (RequestedDisposition == FILE_CREATE
 443             || RequestedDisposition == FILE_OVERWRITE_IF
 444             || RequestedDisposition == FILE_SUPERSEDE)
 445         {
 446           return STATUS_ACCESS_DENIED;
 447         }
 448       if (RequestedOptions & FILE_DIRECTORY_FILE)
 449         {
 450           return STATUS_NOT_A_DIRECTORY;
 451         }
 452       pFcb = DeviceExt->VolumeFcb;
 453       pCcb = RawFsNewCCB(GlobalData);
 454       if (pCcb == NULL)
 455         {
 456           return (STATUS_INSUFFICIENT_RESOURCES);
 457         }
 458
 459       FileObject->Flags |= FO_FCB_IS_VALID;
 460       FileObject->SectionObjectPointer = &pFcb->SectionObjectPointers;
 461       FileObject->FsContext = pFcb;
 462       FileObject->FsContext2 = pCcb;
 463       pFcb->RefCount++;
 464
 465       IrpContext->Irp->IoStatus.Information = FILE_OPENED;
 466       return(STATUS_SUCCESS);
 467     }
 468
 469   /* This filesystem driver only supports volume access */
 470   return(STATUS_INVALID_PARAMETER);
 471 }
 472
 473 static NTSTATUS
 474 RawFsCreate(IN PRAWFS_IRP_CONTEXT IrpContext)
 475 {
 476   NTSTATUS Status;
 477
 478   DPRINT("RawFsCreate(IrpContext %x)\n", IrpContext);
 479
 480   assert(IrpContext);
 481
 482   if (RawFsIsRawFileSystemDeviceObject(IrpContext->DeviceObject))
 483     {
 484       /* DeviceObject represents FileSystem instead of logical volume */
 485       DPRINT("RawFsCreate() called with file system\n");
 486       IrpContext->Irp->IoStatus.Information = FILE_OPENED;
 487       IrpContext->Irp->IoStatus.Status = STATUS_SUCCESS;
 488       IoCompleteRequest(IrpContext->Irp, IO_DISK_INCREMENT);
 489       RawFsFreeIrpContext(IrpContext);
 490       return STATUS_SUCCESS;
 491     }
 492
 493   if (!(IrpContext->Flags & IRPCONTEXT_CANWAIT))
 494     {
 495       return RawFsQueueRequest(IrpContext);
 496     }
 497
 498   IrpContext->Irp->IoStatus.Information = 0;
 499
 500   Status = RawFsCreateFile(IrpContext);
 501
 502   IrpContext->Irp->IoStatus.Status = Status;
 503   IoCompleteRequest(IrpContext->Irp,
 504     NT_SUCCESS(Status) ? IO_DISK_INCREMENT : IO_NO_INCREMENT);
 505   RawFsFreeIrpContext(IrpContext);
 506
 507   return Status;
 508 }
 509
 510 static NTSTATUS
 511 RawFsRead(IN PRAWFS_IRP_CONTEXT IrpContext)
 512 {
 513   DPRINT("RawFsRead(IrpContext %x)\n", IrpContext);
 514   UNIMPLEMENTED
 515   return STATUS_NOT_IMPLEMENTED;
 516 }
 517
 518 static NTSTATUS
 519 RawFsWrite(IN PRAWFS_IRP_CONTEXT IrpContext)
 520 {
 521   DPRINT("RawFsWrite(IrpContext %x)\n", IrpContext);
 522   UNIMPLEMENTED
 523   return STATUS_NOT_IMPLEMENTED;
 524 }
 525
 526 static NTSTATUS
 527 RawFsMount(IN PRAWFS_IRP_CONTEXT IrpContext)
 528 {
 529   PRAWFS_GLOBAL_DATA GlobalData;
 530   PDEVICE_OBJECT DeviceObject = NULL;
 531   PRAWFS_DEVICE_EXTENSION DeviceExt = NULL;
 532   PRAWFS_FCB VolumeFcb = NULL;
 533   PRAWFS_FCB Fcb = NULL;
 534   PARTITION_INFORMATION PartitionInfo;
 535   DISK_GEOMETRY DiskGeometry;
 536   LARGE_INTEGER VolumeSize;
 537   NTSTATUS Status;
 538   ULONG Size;
 539
 540   DPRINT("RawFsMount(IrpContext %x)\n", IrpContext);
 541
 542   assert(IrpContext);
 543
 544   if (!RawFsIsRawFileSystemDeviceObject(IrpContext->DeviceObject))
 545     {
 546       Status = STATUS_INVALID_DEVICE_REQUEST;
 547       DPRINT("Not for me\n");
 548       goto ByeBye;
 549     }
 550
 551   GlobalData = (PRAWFS_GLOBAL_DATA) IrpContext->DeviceObject->DeviceExtension;
 552
 553   Status = IoCreateDevice(GlobalData->DriverObject,
 554     sizeof(RAWFS_DEVICE_EXTENSION),
 555     NULL,
 556     FILE_DEVICE_FILE_SYSTEM,
 557     0,
 558     FALSE,
 559     &DeviceObject);
 560   if (!NT_SUCCESS(Status))
 561     {
 562       goto ByeBye;
 563     }
 564
 565   DeviceObject->Flags |= DO_DIRECT_IO;
 566   DeviceExt = (PVOID) DeviceObject->DeviceExtension;
 567   RtlZeroMemory(DeviceExt, sizeof(RAWFS_DEVICE_EXTENSION));
 568
 569   /* Use same vpb as device disk */
 570   DeviceObject->Vpb = IrpContext->Stack->Parameters.MountVolume.DeviceObject->Vpb;
 571   DeviceExt->StorageDevice = IrpContext->Stack->Parameters.MountVolume.DeviceObject;
 572   DeviceExt->StorageDevice->Vpb->DeviceObject = DeviceObject;
 573   DeviceExt->StorageDevice->Vpb->RealDevice = DeviceExt->StorageDevice;
 574   DeviceExt->StorageDevice->Vpb->Flags |= VPB_MOUNTED;
 575   DeviceObject->StackSize = DeviceExt->StorageDevice->StackSize + 1;
 576   DeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;
 577
 578   KeInitializeSpinLock(&DeviceExt->FcbListLock);
 579   InitializeListHead(&DeviceExt->FcbListHead);
 580
 581   /* First try getting harddisk geometry then try getting CD-ROM geometry */
 582   Size = sizeof(DISK_GEOMETRY);
 583   Status = RawFsBlockDeviceIoControl(
 584     IrpContext->Stack->Parameters.MountVolume.DeviceObject,
 585     IOCTL_DISK_GET_DRIVE_GEOMETRY,
 586     NULL,
 587     0,
 588     &DiskGeometry,
 589     &Size);
 590   if (!NT_SUCCESS(Status))
 591     {
 592       DPRINT("RawFsBlockDeviceIoControl failed with status 0x%.08x\n", Status);
 593       goto ByeBye;
 594     }
 595   if (DiskGeometry.MediaType == FixedMedia)
 596     {
 597       // We have found a hard disk
 598       Size = sizeof(PARTITION_INFORMATION);
 599       Status = RawFsBlockDeviceIoControl(
 600         IrpContext->Stack->Parameters.MountVolume.DeviceObject,
 601         IOCTL_DISK_GET_PARTITION_INFO,
 602         NULL,
 603         0,
 604         &PartitionInfo,
 605         &Size);
 606       if (!NT_SUCCESS(Status))
 607         {
 608           DPRINT("RawFsBlockDeviceIoControl() failed (%x)\n", Status);
 609           goto ByeBye;
 610         }
 611 #ifndef NDEBUG
 612       DbgPrint("Partition Information:\n");
 613       DbgPrint("StartingOffset      %u\n", PartitionInfo.StartingOffset.QuadPart);
 614       DbgPrint("PartitionLength     %u\n", PartitionInfo.PartitionLength.QuadPart);
 615       DbgPrint("HiddenSectors       %u\n", PartitionInfo.HiddenSectors);
 616       DbgPrint("PartitionNumber     %u\n", PartitionInfo.PartitionNumber);
 617       DbgPrint("PartitionType       %u\n", PartitionInfo.PartitionType);
 618       DbgPrint("BootIndicator       %u\n", PartitionInfo.BootIndicator);
 619       DbgPrint("RecognizedPartition %u\n", PartitionInfo.RecognizedPartition);
 620       DbgPrint("RewritePartition    %u\n", PartitionInfo.RewritePartition);
 621 #endif
 622       VolumeSize.QuadPart = PartitionInfo.PartitionLength.QuadPart;
 623     }
 624   else if (DiskGeometry.MediaType > Unknown && DiskGeometry.MediaType <= RemovableMedia)
 625     {
 626       Status = STATUS_UNRECOGNIZED_VOLUME;
 627       goto ByeBye;
 628     }
 629
 630   VolumeFcb = RawFsNewFCB(GlobalData);
 631   if (VolumeFcb == NULL)
 632     {
 633       Status = STATUS_INSUFFICIENT_RESOURCES;
 634       goto ByeBye;
 635     }
 636
 637   VolumeFcb->Flags = FCB_IS_VOLUME;
 638   VolumeFcb->RFCB.FileSize.QuadPart = VolumeSize.QuadPart;
 639   VolumeFcb->RFCB.ValidDataLength.QuadPart = VolumeFcb->RFCB.FileSize.QuadPart;
 640   VolumeFcb->RFCB.AllocationSize.QuadPart = VolumeFcb->RFCB.FileSize.QuadPart;
 641   DeviceExt->VolumeFcb = VolumeFcb;
 642
 643   ExAcquireResourceExclusiveLite(&GlobalData->VolumeListLock, TRUE);
 644   InsertHeadList(&GlobalData->VolumeListHead, &DeviceExt->VolumeListEntry);
 645   ExReleaseResourceLite(&GlobalData->VolumeListLock);
 646
 647   /* No serial number */
 648   DeviceObject->Vpb->SerialNumber = 0;
 649
 650   /* Set volume label (no label) */
 651   *(DeviceObject->Vpb->VolumeLabel) = 0;
 652   DeviceObject->Vpb->VolumeLabelLength = 0;
 653
 654   Status = STATUS_SUCCESS;
 655
 656 ByeBye:
 657   if (!NT_SUCCESS(Status))
 658     {
 659       DPRINT("RAWFS: RawFsMount() Status 0x%.08x\n", Status);
 660
 661       if (Fcb)
 662         RawFsDestroyFCB(GlobalData, Fcb);
 663       if (DeviceObject)
 664         IoDeleteDevice(DeviceObject);
 665       if (VolumeFcb)
 666         RawFsDestroyFCB(GlobalData, VolumeFcb);
 667     }
 668   return Status;
 669 }
 670
 671 static NTSTATUS
 672 RawFsFileSystemControl(IN PRAWFS_IRP_CONTEXT IrpContext)
 673 {
 674   NTSTATUS Status;
 675
 676   DPRINT("RawFsFileSystemControl(IrpContext %x)\n", IrpContext);
 677
 678   assert (IrpContext);
 679
 680   switch (IrpContext->MinorFunction)
 681     {
 682       case IRP_MN_USER_FS_REQUEST:
 683         DPRINT("RawFs FSC: IRP_MN_USER_FS_REQUEST\n");
 684         Status = STATUS_INVALID_DEVICE_REQUEST;
 685         break;
 686
 687       case IRP_MN_MOUNT_VOLUME:
 688         DPRINT("RawFs FSC: IRP_MN_MOUNT_VOLUME\n");
 689         Status = RawFsMount(IrpContext);
 690         break;
 691
 692       case IRP_MN_VERIFY_VOLUME:
 693         DPRINT("RawFs FSC: IRP_MN_VERIFY_VOLUME\n");
 694         Status = STATUS_INVALID_DEVICE_REQUEST;
 695         break;
 696
 697       default:
 698         DPRINT("RawFs FSC: MinorFunction %d\n", IrpContext->MinorFunction);
 699         Status = STATUS_INVALID_DEVICE_REQUEST;
 700         break;
 701     }
 702
 703   IrpContext->Irp->IoStatus.Status = Status;
 704   IrpContext->Irp->IoStatus.Information = 0;
 705
 706   IoCompleteRequest(IrpContext->Irp, IO_NO_INCREMENT);
 707   RawFsFreeIrpContext(IrpContext);
 708   return Status;
 709 }
 710
 711 static NTSTATUS
 712 RawFsQueryInformation(IN PRAWFS_IRP_CONTEXT IrpContext)
 713 {
 714   DPRINT("RawFsQueryInformation(IrpContext %x)\n", IrpContext);
 715   UNIMPLEMENTED
 716   return STATUS_NOT_IMPLEMENTED;
 717 }
 718
 719 static NTSTATUS
 720 RawFsSetInformation(IN PRAWFS_IRP_CONTEXT IrpContext)
 721 {
 722   DPRINT("RawFsSetInformation(IrpContext %x)\n", IrpContext);
 723   UNIMPLEMENTED
 724   return STATUS_NOT_IMPLEMENTED;
 725 }
 726
 727 static NTSTATUS
 728 RawFsDirectoryControl(IN PRAWFS_IRP_CONTEXT IrpContext)
 729 {
 730   DPRINT("RawFsDirectoryControl(IrpContext %x)\n", IrpContext);
 731   UNIMPLEMENTED
 732   return STATUS_NOT_IMPLEMENTED;
 733 }
 734
 735 static NTSTATUS
 736 RawFsQueryVolumeInformation(IN PRAWFS_IRP_CONTEXT IrpContext)
 737 {
 738   DPRINT("RawFsQueryVolumeInformation(IrpContext %x)\n", IrpContext);
 739   UNIMPLEMENTED
 740   return STATUS_NOT_IMPLEMENTED;
 741 }
 742
 743 static NTSTATUS
 744 RawFsSetVolumeInformation(IN PRAWFS_IRP_CONTEXT IrpContext)
 745 {
 746   DPRINT("RawFsSetVolumeInformation(IrpContext %x)\n", IrpContext);
 747   UNIMPLEMENTED
 748   return STATUS_NOT_IMPLEMENTED;
 749 }
 750
 751 static NTSTATUS
 752 RawFsLockControl(IN PRAWFS_IRP_CONTEXT IrpContext)
 753 {
 754   DPRINT("RawFsLockControl(IrpContext %x)\n", IrpContext);
 755   UNIMPLEMENTED
 756   return STATUS_NOT_IMPLEMENTED;
 757 }
 758
 759 static NTSTATUS
 760 RawFsCleanup(IN PRAWFS_IRP_CONTEXT IrpContext)
 761 {
 762   DPRINT("RawFsCleanup(IrpContext %x)\n", IrpContext);
 763   UNIMPLEMENTED
 764   return STATUS_NOT_IMPLEMENTED;
 765 }
 766
 767 static NTSTATUS
 768 RawFsFlush(IN PRAWFS_IRP_CONTEXT IrpContext)
 769 {
 770   DPRINT("RawFsFlush(IrpContext %x)\n", IrpContext);
 771   UNIMPLEMENTED
 772   return STATUS_NOT_IMPLEMENTED;
 773 }
 774
 775 static NTSTATUS STDCALL
 776 RawFsShutdown(IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp)
 777 {
 778   DPRINT("RawFsShutdown(DeviceObject %x, Irp %x)\n", DeviceObject, Irp);
 779
 780   /*
 781    * Note: Do NOT call UNIMPLEMENTED here!
 782    * This function must finish in order to shutdown ReactOS properly!
 783    */
 784
 785   return STATUS_NOT_IMPLEMENTED;
 786 }
 787
 788 static NTSTATUS
 789 RawFsDispatchRequest(IN PRAWFS_IRP_CONTEXT IrpContext)
 790 {
 791   DPRINT("RawFsDispatchRequest(IrpContext %x), MajorFunction %x\n",
 792     IrpContext, IrpContext->MajorFunction);
 793
 794   assert (IrpContext);
 795
 796   switch (IrpContext->MajorFunction)
 797     {
 798       case IRP_MJ_CLOSE:
 799         return RawFsClose(IrpContext);
 800       case IRP_MJ_CREATE:
 801         return RawFsCreate (IrpContext);
 802       case IRP_MJ_READ:
 803         return RawFsRead (IrpContext);
 804       case IRP_MJ_WRITE:
 805         return RawFsWrite (IrpContext);
 806       case IRP_MJ_FILE_SYSTEM_CONTROL:
 807         return RawFsFileSystemControl(IrpContext);
 808       case IRP_MJ_QUERY_INFORMATION:
 809         return RawFsQueryInformation (IrpContext);
 810       case IRP_MJ_SET_INFORMATION:
 811         return RawFsSetInformation (IrpContext);
 812       case IRP_MJ_DIRECTORY_CONTROL:
 813         return RawFsDirectoryControl(IrpContext);
 814       case IRP_MJ_QUERY_VOLUME_INFORMATION:
 815         return RawFsQueryVolumeInformation(IrpContext);
 816       case IRP_MJ_SET_VOLUME_INFORMATION:
 817         return RawFsSetVolumeInformation(IrpContext);
 818       case IRP_MJ_LOCK_CONTROL:
 819         return RawFsLockControl(IrpContext);
 820       case IRP_MJ_CLEANUP:
 821         return RawFsCleanup(IrpContext);
 822       case IRP_MJ_FLUSH_BUFFERS:
 823         return RawFsFlush(IrpContext);
 824       default:
 825         DPRINT1("Unexpected major function %x\n", IrpContext->MajorFunction);
 826         IrpContext->Irp->IoStatus.Status = STATUS_DRIVER_INTERNAL_ERROR;
 827         IoCompleteRequest(IrpContext->Irp, IO_NO_INCREMENT);
 828         RawFsFreeIrpContext(IrpContext);
 829         return STATUS_DRIVER_INTERNAL_ERROR;
 830     }
 831 }
 832
 833 static NTSTATUS STDCALL
 834 RawFsBuildRequest(IN PDEVICE_OBJECT DeviceObject,
 835   IN PIRP Irp)
 836 {
 837   PRAWFS_IRP_CONTEXT IrpContext;
 838   NTSTATUS Status;
 839
 840   DPRINT("RawFsBuildRequest(DeviceObject %x, Irp %x)\n", DeviceObject, Irp);
 841
 842   assert(DeviceObject);
 843   assert(Irp);
 844
 845   IrpContext = RawFsAllocateIrpContext(DeviceObject, Irp);
 846   if (IrpContext == NULL)
 847     {
 848       Status = STATUS_INSUFFICIENT_RESOURCES;
 849       Irp->IoStatus.Status = Status;
 850       IoCompleteRequest(Irp, IO_NO_INCREMENT);
 851     }
 852   else
 853     {
 854       if (KeGetCurrentIrql() <= PASSIVE_LEVEL)
 855         {
 856           FsRtlEnterFileSystem();
 857         }
 858       else
 859         {
 860           DPRINT1("RawFs is entered at irql = %d\n", KeGetCurrentIrql());
 861         }
 862       Status = RawFsDispatchRequest(IrpContext);
 863       if (KeGetCurrentIrql() <= PASSIVE_LEVEL)
 864         {
 865           FsRtlExitFileSystem();
 866         }
 867     }
 868   return Status;
 869 }
 870
 871 NTSTATUS STDCALL
 872 RawFsDriverEntry(IN PDRIVER_OBJECT DriverObject,
 873   IN PUNICODE_STRING RegistryPath)
 874 {
 875   PRAWFS_GLOBAL_DATA DeviceData;
 876   NTSTATUS Status;
 877
 878   RawFsDriverObject = DriverObject;
 879
 880   Status = IoCreateDevice(DriverObject,
 881     sizeof(RAWFS_GLOBAL_DATA),
 882     NULL,
 883     FILE_DEVICE_DISK_FILE_SYSTEM,
 884     0,
 885     FALSE,
 886     &DiskDeviceObject);
 887   if (!NT_SUCCESS(Status))
 888     {
 889       CPRINT("IoCreateDevice() failed with status 0x%.08x\n", Status);
 890       KeBugCheck(PHASE1_INITIALIZATION_FAILED);
 891       return(Status);
 892     }
 893   DeviceData = DiskDeviceObject->DeviceExtension;
 894   RtlZeroMemory(DeviceData, sizeof(RAWFS_GLOBAL_DATA));
 895   DeviceData->DriverObject = DriverObject;
 896   DeviceData->DeviceObject = DiskDeviceObject;
 897   DiskDeviceObject->Flags |= DO_DIRECT_IO;
 898
 899
 900   Status = IoCreateDevice(DriverObject,
 901     sizeof(RAWFS_GLOBAL_DATA),
 902     NULL,
 903     FILE_DEVICE_CD_ROM_FILE_SYSTEM,
 904     0,
 905     FALSE,
 906     &CdromDeviceObject);
 907   if (!NT_SUCCESS(Status))
 908     {
 909       CPRINT("IoCreateDevice() failed with status 0x%.08x\n", Status);
 910       KeBugCheck(PHASE1_INITIALIZATION_FAILED);
 911       return(Status);
 912     }
 913   DeviceData = CdromDeviceObject->DeviceExtension;
 914   RtlZeroMemory (DeviceData, sizeof(RAWFS_GLOBAL_DATA));
 915   DeviceData->DriverObject = DriverObject;
 916   DeviceData->DeviceObject = CdromDeviceObject;
 917   CdromDeviceObject->Flags |= DO_DIRECT_IO;
 918
 919
 920   Status = IoCreateDevice(DriverObject,
 921     sizeof(RAWFS_GLOBAL_DATA),
 922     NULL,
 923     FILE_DEVICE_TAPE_FILE_SYSTEM,
 924     0,
 925     FALSE,
 926     &TapeDeviceObject);
 927   if (!NT_SUCCESS(Status))
 928     {
 929       CPRINT("IoCreateDevice() failed with status 0x%.08x\n", Status);
 930       KeBugCheck(PHASE1_INITIALIZATION_FAILED);
 931       return(Status);
 932     }
 933   DeviceData = TapeDeviceObject->DeviceExtension;
 934   RtlZeroMemory (DeviceData, sizeof(RAWFS_GLOBAL_DATA));
 935   DeviceData->DriverObject = DriverObject;
 936   DeviceData->DeviceObject = TapeDeviceObject;
 937   TapeDeviceObject->Flags |= DO_DIRECT_IO;
 938
 939
 940   DriverObject->MajorFunction[IRP_MJ_CLOSE] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 941   DriverObject->MajorFunction[IRP_MJ_CREATE] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 942   DriverObject->MajorFunction[IRP_MJ_READ] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 943   DriverObject->MajorFunction[IRP_MJ_WRITE] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 944   DriverObject->MajorFunction[IRP_MJ_FILE_SYSTEM_CONTROL] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 945   DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 946   DriverObject->MajorFunction[IRP_MJ_SET_INFORMATION] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 947   DriverObject->MajorFunction[IRP_MJ_DIRECTORY_CONTROL] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 948   DriverObject->MajorFunction[IRP_MJ_QUERY_VOLUME_INFORMATION] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 949   DriverObject->MajorFunction[IRP_MJ_SET_VOLUME_INFORMATION] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 950   DriverObject->MajorFunction[IRP_MJ_SHUTDOWN] = (PDRIVER_DISPATCH) RawFsShutdown;
 951   DriverObject->MajorFunction[IRP_MJ_LOCK_CONTROL] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 952   DriverObject->MajorFunction[IRP_MJ_CLEANUP] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 953   DriverObject->MajorFunction[IRP_MJ_FLUSH_BUFFERS] = (PDRIVER_DISPATCH) RawFsBuildRequest;
 954   DriverObject->DriverUnload = NULL;
 955
 956   ExInitializeNPagedLookasideList(&IrpContextLookasideList,
 957     NULL, NULL, 0, sizeof(RAWFS_IRP_CONTEXT), TAG_IRP, 0);
 958
 959
 960   IoRegisterFileSystem(DiskDeviceObject);
 961   IoRegisterFileSystem(CdromDeviceObject);
 962   IoRegisterFileSystem(TapeDeviceObject);
 963
 964   return STATUS_SUCCESS;
 965 }
 966
 967 /* EOF */