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Implemented IOCTL_DISK_GET_PARTITION_INFO.

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Fixed bug in IOCTL_DISK_GET_DRIVE_GEOMETRY.

svn path=/trunk/; revision=2660
This commit is contained in:
Eric Kohl 2002-03-01 23:18:35 +00:00
parent 82b7a361af
commit 4c0500171e
1 changed files with 60 additions and 9 deletions
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67
reactos/drivers/storage/disk/disk.c
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@ -1,4 +1,4 @@
/* $Id: disk.c,v 1.5 2002/02/03 20:21:45 ekohl Exp $
/* $Id: disk.c,v 1.6 2002/03/01 23:18:35 ekohl Exp $
*
*/
@ -16,11 +16,14 @@
#define VERSION "V0.0.1"
typedef struct _DISK_DEVICE_EXTENSION
typedef struct _DISK_DATA
{
ULONG Dummy;
} DISK_DEVICE_EXTENSION, *PDISK_DEVICE_EXTENSION;
ULONG HiddenSectors;
ULONG PartitionNumber;
UCHAR PartitionType;
BOOLEAN BootIndicator;
BOOLEAN DriveNotReady;
} DISK_DATA, *PDISK_DATA;
BOOLEAN STDCALL
@ -94,7 +97,7 @@ DriverEntry(IN PDRIVER_OBJECT DriverObject,
sizeof(CLASS_INIT_DATA));
InitData.InitializationDataSize = sizeof(CLASS_INIT_DATA);
InitData.DeviceExtensionSize = sizeof(DEVICE_EXTENSION) + sizeof(DISK_DEVICE_EXTENSION);
InitData.DeviceExtensionSize = sizeof(DEVICE_EXTENSION) + sizeof(DISK_DATA);
InitData.DeviceType = FILE_DEVICE_DISK;
InitData.DeviceCharacteristics = 0;
@ -334,7 +337,7 @@ DiskClassCreateDeviceObject(IN PDRIVER_OBJECT DriverObject,
PDRIVE_LAYOUT_INFORMATION PartitionList = NULL;
HANDLE Handle;
PPARTITION_INFORMATION PartitionEntry;
PDISK_DEVICE_EXTENSION DiskData;
PDISK_DATA DiskData;
ULONG PartitionNumber;
NTSTATUS Status;
@ -435,6 +438,10 @@ DiskClassCreateDeviceObject(IN PDRIVER_OBJECT DriverObject,
DiskDeviceExtension->TargetId = InquiryData->TargetId;
DiskDeviceExtension->Lun = InquiryData->Lun;
/* zero-out disk data */
DiskData = (PDISK_DATA)(DiskDeviceExtension + 1);
RtlZeroMemory(DiskData,
sizeof(DISK_DATA));
/* Get disk geometry */
DiskDeviceExtension->DiskGeometry = ExAllocatePool(NonPagedPool,
@ -573,6 +580,7 @@ DiskClassCreateDeviceObject(IN PDRIVER_OBJECT DriverObject,
PartitionDeviceExtension->LockCount = 0;
PartitionDeviceExtension->DeviceNumber = DiskNumber;
PartitionDeviceExtension->PortDeviceObject = PortDeviceObject;
PartitionDeviceExtension->DiskGeometry = DiskDeviceExtension->DiskGeometry;
/* FIXME: Not yet! Will cause pointer corruption! */
// PartitionDeviceExtension->PortCapabilities = PortCapabilities;
@ -586,6 +594,13 @@ DiskClassCreateDeviceObject(IN PDRIVER_OBJECT DriverObject,
PartitionDeviceExtension->TargetId = InquiryData->TargetId;
PartitionDeviceExtension->Lun = InquiryData->Lun;
DiskData = (PDISK_DATA)(PartitionDeviceExtension + 1);
DiskData->PartitionType = PartitionEntry->PartitionType;
DiskData->PartitionNumber = PartitionNumber + 1;
DiskData->HiddenSectors = PartitionEntry->HiddenSectors;
DiskData->BootIndicator = PartitionEntry->BootIndicator;
DiskData->DriveNotReady = FALSE;
/* assign arc name */
RtlInitAnsiString(&DeviceNameA,
@ -614,7 +629,7 @@ DiskClassCreateDeviceObject(IN PDRIVER_OBJECT DriverObject,
}
else
{
DPRINT1("ScsiClassCreateDeviceObject() failed (Status %x)\n", Status);
DPRINT1("ScsiClassCreateDeviceObject() failed to create partition device object (Status %x)\n", Status);
break;
}
@ -657,6 +672,7 @@ DiskClassDeviceControl(IN PDEVICE_OBJECT DeviceObject,
PDEVICE_EXTENSION DeviceExtension;
PIO_STACK_LOCATION IrpStack;
ULONG ControlCode, InputLength, OutputLength;
PDISK_DATA DiskData;
NTSTATUS Status;
DPRINT1("DiskClassDeviceControl() called!\n");
@ -667,11 +683,13 @@ DiskClassDeviceControl(IN PDEVICE_OBJECT DeviceObject,
InputLength = IrpStack->Parameters.DeviceIoControl.InputBufferLength;
OutputLength = IrpStack->Parameters.DeviceIoControl.OutputBufferLength;
DeviceExtension = (PDEVICE_EXTENSION) DeviceObject->DeviceExtension;
DiskData = (PDISK_DATA)(DeviceExtension + 1);
/* A huge switch statement in a Windows program?! who would have thought? */
switch (ControlCode)
{
case IOCTL_DISK_GET_DRIVE_GEOMETRY:
DPRINT1("IOCTL_DISK_GET_DRIVE_GEOMETRY\n");
if (IrpStack->Parameters.DeviceIoControl.OutputBufferLength < sizeof(DISK_GEOMETRY))
{
Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
@ -706,6 +724,39 @@ DiskClassDeviceControl(IN PDEVICE_OBJECT DeviceObject,
break;
case IOCTL_DISK_GET_PARTITION_INFO:
DPRINT1("IOCTL_DISK_GET_PARTITION_INFO\n");
if (IrpStack->Parameters.DeviceIoControl.OutputBufferLength <
sizeof(PARTITION_INFORMATION))
{
Irp->IoStatus.Status = STATUS_INFO_LENGTH_MISMATCH;
Irp->IoStatus.Information = 0;
}
else if (DiskData->PartitionNumber == 0)
{
Irp->IoStatus.Status = STATUS_INVALID_DEVICE_REQUEST;
Irp->IoStatus.Information = 0;
}
else
{
PPARTITION_INFORMATION PartitionInfo;
PartitionInfo = (PPARTITION_INFORMATION)Irp->AssociatedIrp.SystemBuffer;
PartitionInfo->PartitionType = DiskData->PartitionType;
PartitionInfo->StartingOffset = DeviceExtension->StartingOffset;
PartitionInfo->PartitionLength = DeviceExtension->PartitionLength;
PartitionInfo->HiddenSectors = DiskData->HiddenSectors;
PartitionInfo->PartitionNumber = DiskData->PartitionNumber;
PartitionInfo->BootIndicator = DiskData->BootIndicator;
PartitionInfo->RewritePartition = FALSE;
PartitionInfo->RecognizedPartition =
IsRecognizedPartition(DiskData->PartitionType);
Irp->IoStatus.Status = STATUS_SUCCESS;
Irp->IoStatus.Information = sizeof(PARTITION_INFORMATION);
}
break;
case IOCTL_DISK_SET_PARTITION_INFO:
case IOCTL_DISK_GET_DRIVE_LAYOUT:
case IOCTL_DISK_SET_DRIVE_LAYOUT: