3 * Copyright (C) 2001, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
21 * COPYRIGHT: See COPYING in the top level directory
22 * PROJECT: ReactOS kernel
23 * FILE: services/storage/disk/disk.c
24 * PURPOSE: disk class driver
25 * PROGRAMMER: Eric Kohl (ekohl@rz-online.de)
28 /* INCLUDES *****************************************************************/
30 #include <ddk/ntddk.h>
32 #include <ddk/class2.h>
33 #include <ddk/ntddscsi.h>
38 #define VERSION "0.0.1"
41 typedef struct _DISK_DATA
44 ULONG PartitionNumber;
45 ULONG PartitionOrdinal;
47 BOOLEAN BootIndicator;
48 BOOLEAN DriveNotReady;
49 } DISK_DATA, *PDISK_DATA;
53 DiskClassFindDevices(PDRIVER_OBJECT DriverObject,
54 PUNICODE_STRING RegistryPath,
55 PCLASS_INIT_DATA InitializationData,
56 PDEVICE_OBJECT PortDeviceObject,
60 DiskClassCheckDevice(IN PINQUIRYDATA InquiryData);
63 DiskClassCheckReadWrite(IN PDEVICE_OBJECT DeviceObject,
68 DiskClassCreateDeviceObject(IN PDRIVER_OBJECT DriverObject,
69 IN PUNICODE_STRING RegistryPath, /* what's this used for? */
70 IN PDEVICE_OBJECT PortDeviceObject,
73 IN PIO_SCSI_CAPABILITIES Capabilities,
74 IN PSCSI_INQUIRY_DATA InquiryData,
75 IN PCLASS_INIT_DATA InitializationData);
78 DiskClassDeviceControl(IN PDEVICE_OBJECT DeviceObject,
82 DiskClassShutdownFlush(IN PDEVICE_OBJECT DeviceObject,
87 /* FUNCTIONS ****************************************************************/
92 // This function initializes the driver, locates and claims
93 // hardware resources, and creates various NT objects needed
94 // to process I/O requests.
100 // IN PDRIVER_OBJECT DriverObject System allocated Driver Object
102 // IN PUNICODE_STRING RegistryPath Name of registry driver service
109 DriverEntry(IN PDRIVER_OBJECT DriverObject,
110 IN PUNICODE_STRING RegistryPath)
112 CLASS_INIT_DATA InitData;
114 DPRINT("Disk Class Driver %s\n",
116 DPRINT("RegistryPath '%wZ'\n",
119 RtlZeroMemory(&InitData,
120 sizeof(CLASS_INIT_DATA));
122 InitData.InitializationDataSize = sizeof(CLASS_INIT_DATA);
123 InitData.DeviceExtensionSize = sizeof(DEVICE_EXTENSION) + sizeof(DISK_DATA);
124 InitData.DeviceType = FILE_DEVICE_DISK;
125 InitData.DeviceCharacteristics = 0;
127 InitData.ClassError = NULL; // DiskClassProcessError;
128 InitData.ClassReadWriteVerification = DiskClassCheckReadWrite;
129 InitData.ClassFindDeviceCallBack = DiskClassCheckDevice;
130 InitData.ClassFindDevices = DiskClassFindDevices;
131 InitData.ClassDeviceControl = DiskClassDeviceControl;
132 InitData.ClassShutdownFlush = DiskClassShutdownFlush;
133 InitData.ClassCreateClose = NULL;
134 InitData.ClassStartIo = NULL;
136 return(ScsiClassInitialize(DriverObject,
142 /**********************************************************************
144 * DiskClassFindDevices
147 * This function searches for device that are attached to the
155 * System allocated Driver Object for this driver
158 * Name of registry driver service key
161 * Pointer to the main initialization data
164 * Pointer to the port Device Object
170 * TRUE: At least one disk drive was found
171 * FALSE: No disk drive found
175 DiskClassFindDevices(PDRIVER_OBJECT DriverObject,
176 PUNICODE_STRING RegistryPath,
177 PCLASS_INIT_DATA InitializationData,
178 PDEVICE_OBJECT PortDeviceObject,
181 PCONFIGURATION_INFORMATION ConfigInfo;
182 PIO_SCSI_CAPABILITIES PortCapabilities;
183 PSCSI_ADAPTER_BUS_INFO AdapterBusInfo;
184 PSCSI_INQUIRY_DATA UnitInfo;
185 PINQUIRYDATA InquiryData;
192 DPRINT("DiskClassFindDevices() called.\n");
194 /* Get port capabilities */
195 Status = ScsiClassGetCapabilities(PortDeviceObject,
197 if (!NT_SUCCESS(Status))
199 DPRINT("ScsiClassGetCapabilities() failed! (Status 0x%lX)\n", Status);
203 DPRINT("PortCapabilities: %p\n", PortCapabilities);
204 DPRINT("MaximumTransferLength: %lu\n", PortCapabilities->MaximumTransferLength);
205 DPRINT("MaximumPhysicalPages: %lu\n", PortCapabilities->MaximumPhysicalPages);
207 /* Get inquiry data */
208 Status = ScsiClassGetInquiryData(PortDeviceObject,
209 (PSCSI_ADAPTER_BUS_INFO *)&Buffer);
210 if (!NT_SUCCESS(Status))
212 DPRINT("ScsiClassGetInquiryData() failed! (Status %x)\n", Status);
216 /* Check whether there are unclaimed devices */
217 AdapterBusInfo = (PSCSI_ADAPTER_BUS_INFO)Buffer;
218 DeviceCount = ScsiClassFindUnclaimedDevices(InitializationData,
220 if (DeviceCount == 0)
222 DPRINT("No unclaimed devices!\n");
226 DPRINT("Found %lu unclaimed devices!\n", DeviceCount);
228 ConfigInfo = IoGetConfigurationInformation();
230 /* Search each bus of this adapter */
231 for (Bus = 0; Bus < (ULONG)AdapterBusInfo->NumberOfBuses; Bus++)
233 DPRINT("Searching bus %lu\n", Bus);
235 UnitInfo = (PSCSI_INQUIRY_DATA)(Buffer + AdapterBusInfo->BusData[Bus].InquiryDataOffset);
237 while (AdapterBusInfo->BusData[Bus].InquiryDataOffset)
239 InquiryData = (PINQUIRYDATA)UnitInfo->InquiryData;
241 if (((InquiryData->DeviceType == DIRECT_ACCESS_DEVICE) ||
242 (InquiryData->DeviceType == OPTICAL_DEVICE)) &&
243 (InquiryData->DeviceTypeQualifier == 0) &&
244 (UnitInfo->DeviceClaimed == FALSE))
246 DPRINT("Vendor: '%.24s'\n",
247 InquiryData->VendorId);
249 /* Create device objects for disk */
250 Status = DiskClassCreateDeviceObject(DriverObject,
254 ConfigInfo->DiskCount,
258 if (NT_SUCCESS(Status))
260 ConfigInfo->DiskCount++;
265 if (UnitInfo->NextInquiryDataOffset == 0)
268 UnitInfo = (PSCSI_INQUIRY_DATA)(Buffer + UnitInfo->NextInquiryDataOffset);
274 DPRINT("DiskClassFindDevices() done\n");
280 /**********************************************************************
282 * DiskClassCheckDevice
285 * This function checks the InquiryData for the correct device
286 * type and qualifier.
293 * Pointer to the inquiry data for the device in question.
296 * TRUE: A disk device was found.
301 DiskClassCheckDevice(IN PINQUIRYDATA InquiryData)
303 return((InquiryData->DeviceType == DIRECT_ACCESS_DEVICE ||
304 InquiryData->DeviceType == OPTICAL_DEVICE) &&
305 InquiryData->DeviceTypeQualifier == 0);
309 /**********************************************************************
311 * DiskClassCheckReadWrite
314 * This function checks the given IRP for correct data.
321 * Pointer to the device.
327 * STATUS_SUCCESS: The IRP matches the requirements of the given device.
332 DiskClassCheckReadWrite(IN PDEVICE_OBJECT DeviceObject,
335 PDEVICE_EXTENSION DeviceExtension;
338 DPRINT("DiskClassCheckReadWrite() called\n");
340 DeviceExtension = DeviceObject->DeviceExtension;
341 DiskData = (PDISK_DATA)(DeviceExtension + 1);
343 if (DiskData->DriveNotReady == TRUE)
345 Irp->IoStatus.Status = STATUS_DEVICE_NOT_READY;
346 IoSetHardErrorOrVerifyDevice(Irp,
348 return(STATUS_INVALID_PARAMETER);
351 return(STATUS_SUCCESS);
355 /**********************************************************************
357 * DiskClassCreateDeviceObject
360 * Create the raw device and any partition devices on this drive
367 * The system created driver object
377 * STATUS_SUCCESS: Device objects for disk and partitions were created.
382 DiskClassCreateDeviceObject(IN PDRIVER_OBJECT DriverObject,
383 IN PUNICODE_STRING RegistryPath, /* what's this used for? */
384 IN PDEVICE_OBJECT PortDeviceObject,
387 IN PIO_SCSI_CAPABILITIES Capabilities,
388 IN PSCSI_INQUIRY_DATA InquiryData,
389 IN PCLASS_INIT_DATA InitializationData)
391 OBJECT_ATTRIBUTES ObjectAttributes;
392 UNICODE_STRING UnicodeDeviceDirName;
393 WCHAR NameBuffer[80];
394 CHAR NameBuffer2[80];
395 PDEVICE_OBJECT DiskDeviceObject;
396 PDEVICE_OBJECT PartitionDeviceObject;
397 PDEVICE_EXTENSION DiskDeviceExtension; /* defined in class2.h */
398 PDEVICE_EXTENSION PartitionDeviceExtension; /* defined in class2.h */
399 PDRIVE_LAYOUT_INFORMATION PartitionList = NULL;
401 PPARTITION_INFORMATION PartitionEntry;
403 ULONG PartitionNumber;
406 DPRINT("DiskClassCreateDeviceObject() called\n");
408 /* Create the harddisk device directory */
410 L"\\Device\\Harddisk%lu",
412 RtlInitUnicodeString(&UnicodeDeviceDirName,
414 InitializeObjectAttributes(&ObjectAttributes,
415 &UnicodeDeviceDirName,
419 Status = ZwCreateDirectoryObject(&Handle,
422 if (!NT_SUCCESS(Status))
424 DbgPrint("Could not create device dir object\n");
428 /* Claim the disk device */
429 Status = ScsiClassClaimDevice(PortDeviceObject,
433 if (!NT_SUCCESS(Status))
435 DbgPrint("Could not claim disk device\n");
437 ZwMakeTemporaryObject(Handle);
443 /* Create disk device (Partition 0) */
445 "\\Device\\Harddisk%lu\\Partition0",
448 Status = ScsiClassCreateDeviceObject(DriverObject,
453 if (!NT_SUCCESS(Status))
455 DPRINT("ScsiClassCreateDeviceObject() failed (Status %x)\n", Status);
457 /* Release (unclaim) the disk */
458 ScsiClassClaimDevice(PortDeviceObject,
463 /* Delete the harddisk device directory */
464 ZwMakeTemporaryObject(Handle);
470 DiskDeviceObject->Flags |= DO_DIRECT_IO;
471 if (((PINQUIRYDATA)InquiryData->InquiryData)->RemovableMedia)
473 DiskDeviceObject->Characteristics |= FILE_REMOVABLE_MEDIA;
475 DiskDeviceObject->StackSize = (CCHAR)PortDeviceObject->StackSize + 1;
477 if (PortDeviceObject->AlignmentRequirement > DiskDeviceObject->AlignmentRequirement)
479 DiskDeviceObject->AlignmentRequirement = PortDeviceObject->AlignmentRequirement;
482 DiskDeviceExtension = DiskDeviceObject->DeviceExtension;
483 DiskDeviceExtension->LockCount = 0;
484 DiskDeviceExtension->DeviceNumber = DiskNumber;
485 DiskDeviceExtension->PortDeviceObject = PortDeviceObject;
486 DiskDeviceExtension->PhysicalDevice = DiskDeviceObject;
487 DiskDeviceExtension->PortCapabilities = Capabilities;
488 DiskDeviceExtension->StartingOffset.QuadPart = 0;
489 DiskDeviceExtension->PortNumber = (UCHAR)PortNumber;
490 DiskDeviceExtension->PathId = InquiryData->PathId;
491 DiskDeviceExtension->TargetId = InquiryData->TargetId;
492 DiskDeviceExtension->Lun = InquiryData->Lun;
494 /* zero-out disk data */
495 DiskData = (PDISK_DATA)(DiskDeviceExtension + 1);
496 RtlZeroMemory(DiskData,
499 /* Get disk geometry */
500 DiskDeviceExtension->DiskGeometry = ExAllocatePool(NonPagedPool,
501 sizeof(DISK_GEOMETRY));
502 if (DiskDeviceExtension->DiskGeometry == NULL)
504 DPRINT("Failed to allocate geometry buffer!\n");
506 IoDeleteDevice(DiskDeviceObject);
508 /* Release (unclaim) the disk */
509 ScsiClassClaimDevice(PortDeviceObject,
514 /* Delete the harddisk device directory */
515 ZwMakeTemporaryObject(Handle);
518 return(STATUS_INSUFFICIENT_RESOURCES);
521 /* Read the drive's capacity */
522 Status = ScsiClassReadDriveCapacity(DiskDeviceObject);
523 if (!NT_SUCCESS(Status) &&
524 (DiskDeviceObject->Characteristics & FILE_REMOVABLE_MEDIA) == 0)
526 DPRINT1("Failed to retrieve drive capacity!\n");
527 return(STATUS_SUCCESS);
531 /* Clear the verify flag for removable media drives. */
532 DiskDeviceObject->Flags &= ~DO_VERIFY_VOLUME;
535 DPRINT("SectorSize: %lu\n", DiskDeviceExtension->DiskGeometry->BytesPerSector);
537 if ((DiskDeviceObject->Characteristics & FILE_REMOVABLE_MEDIA) &&
538 (DiskDeviceExtension->DiskGeometry->MediaType == RemovableMedia))
540 /* Allocate a partition list for a single entry. */
541 PartitionList = ExAllocatePool(NonPagedPool,
542 sizeof(DRIVE_LAYOUT_INFORMATION));
543 if (PartitionList != NULL)
545 RtlZeroMemory(PartitionList,
546 sizeof(DRIVE_LAYOUT_INFORMATION));
547 PartitionList->PartitionCount = 1;
549 DiskData->DriveNotReady = TRUE;
550 Status = STATUS_SUCCESS;
555 /* Read partition table */
556 Status = IoReadPartitionTable(DiskDeviceObject,
557 DiskDeviceExtension->DiskGeometry->BytesPerSector,
561 DPRINT("IoReadPartitionTable(): Status: %lx\n", Status);
563 if ((!NT_SUCCESS(Status) || PartitionList->PartitionCount == 0) &&
564 DiskDeviceObject->Characteristics & FILE_REMOVABLE_MEDIA)
566 if (!NT_SUCCESS(Status))
568 /* Drive is not ready. */
569 DPRINT("Drive not ready\n");
570 DiskData->DriveNotReady = TRUE;
574 ExFreePool(PartitionList);
577 /* Allocate a partition list for a single entry. */
578 PartitionList = ExAllocatePool(NonPagedPool,
579 sizeof(DRIVE_LAYOUT_INFORMATION));
580 if (PartitionList != NULL)
582 RtlZeroMemory(PartitionList,
583 sizeof(DRIVE_LAYOUT_INFORMATION));
584 PartitionList->PartitionCount = 1;
586 Status = STATUS_SUCCESS;
591 if (NT_SUCCESS(Status))
593 DPRINT("Read partition table!\n");
595 DPRINT(" Number of partitions: %u\n", PartitionList->PartitionCount);
597 for (PartitionNumber = 0; PartitionNumber < PartitionList->PartitionCount; PartitionNumber++)
599 PartitionEntry = &PartitionList->PartitionEntry[PartitionNumber];
601 DPRINT("Partition %02ld: nr: %d boot: %1x type: %x offset: %I64d size: %I64d\n",
603 PartitionEntry->PartitionNumber,
604 PartitionEntry->BootIndicator,
605 PartitionEntry->PartitionType,
606 PartitionEntry->StartingOffset.QuadPart / 512 /*DrvParms.BytesPerSector*/,
607 PartitionEntry->PartitionLength.QuadPart / 512 /* DrvParms.BytesPerSector*/);
609 /* Create partition device object */
611 "\\Device\\Harddisk%lu\\Partition%lu",
613 PartitionNumber + 1);
615 Status = ScsiClassCreateDeviceObject(DriverObject,
618 &PartitionDeviceObject,
620 DPRINT("ScsiClassCreateDeviceObject(): Status %x\n", Status);
621 if (NT_SUCCESS(Status))
623 PartitionDeviceObject->Flags = DiskDeviceObject->Flags;
624 PartitionDeviceObject->Characteristics = DiskDeviceObject->Characteristics;
625 PartitionDeviceObject->StackSize = DiskDeviceObject->StackSize;
626 PartitionDeviceObject->AlignmentRequirement = DiskDeviceObject->AlignmentRequirement;
628 PartitionDeviceExtension = PartitionDeviceObject->DeviceExtension;
629 PartitionDeviceExtension->LockCount = 0;
630 PartitionDeviceExtension->DeviceNumber = DiskNumber;
631 PartitionDeviceExtension->PortDeviceObject = PortDeviceObject;
632 PartitionDeviceExtension->DiskGeometry = DiskDeviceExtension->DiskGeometry;
633 PartitionDeviceExtension->PhysicalDevice = DiskDeviceExtension->PhysicalDevice;
634 PartitionDeviceExtension->PortCapabilities = Capabilities;
635 PartitionDeviceExtension->StartingOffset.QuadPart =
636 PartitionEntry->StartingOffset.QuadPart;
637 PartitionDeviceExtension->PartitionLength.QuadPart =
638 PartitionEntry->PartitionLength.QuadPart;
639 PartitionDeviceExtension->PortNumber = (UCHAR)PortNumber;
640 PartitionDeviceExtension->PathId = InquiryData->PathId;
641 PartitionDeviceExtension->TargetId = InquiryData->TargetId;
642 PartitionDeviceExtension->Lun = InquiryData->Lun;
643 PartitionDeviceExtension->SectorShift = DiskDeviceExtension->SectorShift;
645 DiskData = (PDISK_DATA)(PartitionDeviceExtension + 1);
646 DiskData->PartitionType = PartitionEntry->PartitionType;
647 DiskData->PartitionNumber = PartitionNumber + 1;
648 DiskData->PartitionOrdinal = PartitionNumber + 1;
649 DiskData->HiddenSectors = PartitionEntry->HiddenSectors;
650 DiskData->BootIndicator = PartitionEntry->BootIndicator;
651 DiskData->DriveNotReady = FALSE;
655 DPRINT1("ScsiClassCreateDeviceObject() failed to create partition device object (Status %x)\n", Status);
662 if (PartitionList != NULL)
663 ExFreePool(PartitionList);
665 DPRINT("DiskClassCreateDeviceObjects() done\n");
667 return(STATUS_SUCCESS);
671 /**********************************************************************
673 * DiskClassDeviceControl
676 * Answer requests for device control calls
682 * Standard dispatch arguments
689 DiskClassDeviceControl(IN PDEVICE_OBJECT DeviceObject,
692 PDEVICE_EXTENSION DeviceExtension;
693 PIO_STACK_LOCATION IrpStack;
694 ULONG ControlCode, InputLength, OutputLength;
699 DPRINT("DiskClassDeviceControl() called!\n");
701 Status = STATUS_INVALID_DEVICE_REQUEST;
703 IrpStack = IoGetCurrentIrpStackLocation(Irp);
704 ControlCode = IrpStack->Parameters.DeviceIoControl.IoControlCode;
705 InputLength = IrpStack->Parameters.DeviceIoControl.InputBufferLength;
706 OutputLength = IrpStack->Parameters.DeviceIoControl.OutputBufferLength;
707 DeviceExtension = (PDEVICE_EXTENSION)DeviceObject->DeviceExtension;
708 DiskData = (PDISK_DATA)(DeviceExtension + 1);
712 case IOCTL_DISK_GET_DRIVE_GEOMETRY:
713 DPRINT("IOCTL_DISK_GET_DRIVE_GEOMETRY\n");
714 if (IrpStack->Parameters.DeviceIoControl.OutputBufferLength < sizeof(DISK_GEOMETRY))
716 Status = STATUS_INVALID_PARAMETER;
720 PDISK_GEOMETRY Geometry;
722 if (DeviceExtension->DiskGeometry == NULL)
724 DPRINT("No disk geometry available!\n");
725 DeviceExtension->DiskGeometry = ExAllocatePool(NonPagedPool,
726 sizeof(DISK_GEOMETRY));
728 Status = ScsiClassReadDriveCapacity(DeviceObject);
729 DPRINT("ScsiClassReadDriveCapacity() returned (Status %lx)\n", Status);
730 if (NT_SUCCESS(Status))
732 Geometry = (PDISK_GEOMETRY)Irp->AssociatedIrp.SystemBuffer;
733 RtlMoveMemory(Geometry,
734 DeviceExtension->DiskGeometry,
735 sizeof(DISK_GEOMETRY));
737 Status = STATUS_SUCCESS;
738 Information = sizeof(DISK_GEOMETRY);
743 case IOCTL_DISK_GET_PARTITION_INFO:
744 DPRINT("IOCTL_DISK_GET_PARTITION_INFO\n");
745 if (IrpStack->Parameters.DeviceIoControl.OutputBufferLength <
746 sizeof(PARTITION_INFORMATION))
748 Status = STATUS_INFO_LENGTH_MISMATCH;
750 else if (DiskData->PartitionNumber == 0)
752 Status = STATUS_INVALID_DEVICE_REQUEST;
756 PPARTITION_INFORMATION PartitionInfo;
758 PartitionInfo = (PPARTITION_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
760 PartitionInfo->PartitionType = DiskData->PartitionType;
761 PartitionInfo->StartingOffset = DeviceExtension->StartingOffset;
762 PartitionInfo->PartitionLength = DeviceExtension->PartitionLength;
763 PartitionInfo->HiddenSectors = DiskData->HiddenSectors;
764 PartitionInfo->PartitionNumber = DiskData->PartitionNumber;
765 PartitionInfo->BootIndicator = DiskData->BootIndicator;
766 PartitionInfo->RewritePartition = FALSE;
767 PartitionInfo->RecognizedPartition =
768 IsRecognizedPartition(DiskData->PartitionType);
770 Status = STATUS_SUCCESS;
771 Information = sizeof(PARTITION_INFORMATION);
775 case IOCTL_DISK_SET_PARTITION_INFO:
776 if (IrpStack->Parameters.DeviceIoControl.InputBufferLength <
777 sizeof(SET_PARTITION_INFORMATION))
779 Status = STATUS_INFO_LENGTH_MISMATCH;
781 else if (DiskData->PartitionNumber == 0)
783 Status = STATUS_INVALID_DEVICE_REQUEST;
787 PSET_PARTITION_INFORMATION PartitionInfo;
789 PartitionInfo = (PSET_PARTITION_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
791 Status = IoSetPartitionInformation(DeviceExtension->PhysicalDevice,
792 DeviceExtension->DiskGeometry->BytesPerSector,
793 DiskData->PartitionOrdinal,
794 PartitionInfo->PartitionType);
795 if (NT_SUCCESS(Status))
797 DiskData->PartitionType = PartitionInfo->PartitionType;
802 case IOCTL_DISK_GET_DRIVE_LAYOUT:
803 if (IrpStack->Parameters.DeviceIoControl.OutputBufferLength <
804 sizeof(DRIVE_LAYOUT_INFORMATION))
806 Status = STATUS_BUFFER_TOO_SMALL;
810 PDRIVE_LAYOUT_INFORMATION PartitionList;
812 Status = IoReadPartitionTable(DeviceExtension->PhysicalDevice,
813 DeviceExtension->DiskGeometry->BytesPerSector,
816 if (NT_SUCCESS(Status))
820 BufferSize = FIELD_OFFSET(DRIVE_LAYOUT_INFORMATION,
822 BufferSize += PartitionList->PartitionCount * sizeof(PARTITION_INFORMATION);
824 if (BufferSize > IrpStack->Parameters.DeviceIoControl.OutputBufferLength)
826 Status = STATUS_BUFFER_TOO_SMALL;
830 RtlMoveMemory(Irp->AssociatedIrp.SystemBuffer,
833 Status = STATUS_SUCCESS;
834 Information = BufferSize;
836 ExFreePool(PartitionList);
841 case IOCTL_DISK_SET_DRIVE_LAYOUT:
842 if (IrpStack->Parameters.DeviceIoControl.InputBufferLength <
843 sizeof(DRIVE_LAYOUT_INFORMATION))
845 Status = STATUS_INFO_LENGTH_MISMATCH;
847 else if (DeviceExtension->PhysicalDevice->DeviceExtension != DeviceExtension)
849 Status = STATUS_INVALID_PARAMETER;
853 PDRIVE_LAYOUT_INFORMATION PartitionList;
856 PartitionList = Irp->AssociatedIrp.SystemBuffer;
857 TableSize = sizeof(DRIVE_LAYOUT_INFORMATION) +
858 ((PartitionList->PartitionCount - 1) * sizeof(PARTITION_INFORMATION));
860 if (IrpStack->Parameters.DeviceIoControl.InputBufferLength < TableSize)
862 Status = STATUS_BUFFER_TOO_SMALL;
866 Status = IoWritePartitionTable(DeviceExtension->DeviceObject,
867 DeviceExtension->DiskGeometry->BytesPerSector,
868 DeviceExtension->DiskGeometry->SectorsPerTrack,
869 DeviceExtension->DiskGeometry->TracksPerCylinder,
871 if (NT_SUCCESS(Status))
873 /* FIXME: Update partition device objects */
875 Information = TableSize;
881 case IOCTL_DISK_VERIFY:
882 case IOCTL_DISK_FORMAT_TRACKS:
883 case IOCTL_DISK_PERFORMANCE:
884 case IOCTL_DISK_IS_WRITABLE:
885 case IOCTL_DISK_LOGGING:
886 case IOCTL_DISK_FORMAT_TRACKS_EX:
887 case IOCTL_DISK_HISTOGRAM_STRUCTURE:
888 case IOCTL_DISK_HISTOGRAM_DATA:
889 case IOCTL_DISK_HISTOGRAM_RESET:
890 case IOCTL_DISK_REQUEST_STRUCTURE:
891 case IOCTL_DISK_REQUEST_DATA:
892 /* If we get here, something went wrong. Inform the requestor */
893 DPRINT1("Unhandled control code: %lx\n", ControlCode);
894 Status = STATUS_INVALID_DEVICE_REQUEST;
899 /* Call the common device control function */
900 return(ScsiClassDeviceControl(DeviceObject, Irp));
903 /* Verify the device if the user caused the error */
904 if (!NT_SUCCESS(Status) && IoIsErrorUserInduced(Status))
906 IoSetHardErrorOrVerifyDevice(Irp, DeviceObject);
909 Irp->IoStatus.Status = Status;
910 Irp->IoStatus.Information = Information;
911 IoCompleteRequest(Irp,
918 /**********************************************************************
920 * DiskClassShutdownFlush
923 * Answer requests for shutdown and flush calls.
930 * Pointer to the device.
940 DiskClassShutdownFlush(IN PDEVICE_OBJECT DeviceObject,
943 PDEVICE_EXTENSION DeviceExtension;
944 PIO_STACK_LOCATION IrpStack;
945 PSCSI_REQUEST_BLOCK Srb;
947 DPRINT("DiskClassShutdownFlush() called!\n");
949 DeviceExtension = DeviceObject->DeviceExtension;
952 Srb = ExAllocatePool(NonPagedPool,
953 sizeof(SCSI_REQUEST_BLOCK));
956 Irp->IoStatus.Status = STATUS_INSUFFICIENT_RESOURCES;
957 Irp->IoStatus.Information = 0;
958 IoCompleteRequest(Irp, IO_NO_INCREMENT);
960 return(STATUS_INSUFFICIENT_RESOURCES);
964 RtlZeroMemory(Srb, sizeof(SCSI_REQUEST_BLOCK));
965 Srb->Length = sizeof(SCSI_REQUEST_BLOCK);
968 Srb->PathId = DeviceExtension->PathId;
969 Srb->TargetId = DeviceExtension->TargetId;
970 Srb->Lun = DeviceExtension->Lun;
973 /* FIXME: Flush write cache */
976 /* Get current stack location */
977 IrpStack = IoGetCurrentIrpStackLocation(Irp);
980 /* FIXME: Unlock removable media upon shutdown */
984 IrpStack->Parameters.Others.Argument4 = (PVOID)0;
986 /* Send shutdown or flush request to the port driver */
988 if (IrpStack->MajorFunction == IRP_MJ_SHUTDOWN)
989 Srb->Function = SRB_FUNCTION_SHUTDOWN;
991 Srb->Function = SRB_FUNCTION_FLUSH;
993 /* Init completion routine */
994 IoSetCompletionRoutine(Irp,
1001 /* Prepare next stack location for a call to the port driver */
1002 IrpStack = IoGetNextIrpStackLocation(Irp);
1003 IrpStack->MajorFunction = IRP_MJ_SCSI;
1004 IrpStack->Parameters.Scsi.Srb = Srb;
1005 Srb->OriginalRequest = Irp;
1007 /* Call port driver */
1008 return(IoCallDriver(DeviceExtension->PortDeviceObject, Irp));