Difference between revisions of "TDiskImage"
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Latest revision as of 03:55, 17 May 2018
Return to Unit Filesystem
Description
To be documented
Class definitions
TDiskImage = class(TListObject)
constructor Create(ADriver:TFileSysDriver; AController:TDiskController; const AName:String; AImageNo:Integer);
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destructor Destroy; override;
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private
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FLock:TSynchronizerHandle;
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FLocalLock:TMutexHandle;
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protected
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FDriver:TFileSysDriver;
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FController:TDiskController;
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FName:String;
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FImageNo:Integer;
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FLocked:Boolean;
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FChanged:Boolean;
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FAttributes:LongWord;
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FImageType:TImageType;
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FMediaType:TMediaType;
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FFloppyType:TFloppyType;
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FCylinders:LongWord;
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Physical Cylinders on Drive |
FHeads:LongWord;
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Physical Heads on Drive |
FSectors:LongWord;
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Physical Sectors per Track |
FLogicalShiftCount:Word;
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Physical to Logical Shift Count |
FSectorSize:Word;
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Bytes Per Sector |
FSectorCount:Int64;
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Total Sectors |
FSectorShiftCount:Word;
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Sectors to Bytes Shift Count |
FPartitionId:Byte;
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Partition Type for Table |
FFileSysType:TFileSysType;
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FDevice:TDiskDevice;
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function AcquireLock:Boolean;
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function ReleaseLock:Boolean;
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function GetReady:Boolean; virtual;
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function GetReadable:Boolean; virtual;
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function GetWriteable:Boolean; virtual;
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function GetEraseable:Boolean; virtual;
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function GetCylinders:LongWord; virtual;
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function GetHeads:LongWord; virtual;
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function GetSectors:LongWord; virtual;
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function GetLogicalShiftCount:Word; virtual;
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function GetSectorSize:Word; virtual;
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function GetSectorCount:Int64; virtual;
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function GetSectorShiftCount:Word; virtual;
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function GetPartitionId:Byte; virtual;
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function GetName:String; virtual;
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procedure SetName(const AName:String); virtual;
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procedure SetDevice(ADevice:TDiskDevice);
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public
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property Controller:TDiskController read FController;
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property Name:String read GetName write SetName;
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property ImageNo:Integer read FImageNo;
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property Ready:Boolean read GetReady;
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property Locked:Boolean read FLocked;
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property Changed:Boolean read FChanged;
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property Readable:Boolean read GetReadable;
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property Writeable:Boolean read GetWriteable;
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property Eraseable:Boolean read GetEraseable;
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property Attributes:LongWord read FAttributes;
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property ImageType:TImageType read FImageType;
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property MediaType:TMediaType read FMediaType;
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property FloppyType:TFloppyType read FFloppyType;
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property Cylinders:LongWord read FCylinders;
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property Heads:LongWord read FHeads;
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property Sectors:LongWord read FSectors;
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property LogicalShiftCount:Word read FLogicalShiftCount;
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property SectorSize:Word read FSectorSize;
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property SectorCount:Int64 read FSectorCount;
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property SectorShiftCount:Word read FSectorShiftCount;
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property PartitionId:Byte read FPartitionId;
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property FileSysType:TFileSysType read FFileSysType;
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property Device:TDiskDevice read FDevice write SetDevice;
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function ReaderLock:Boolean;
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function ReaderUnlock:Boolean;
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function ReaderConvert:Boolean;
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function WriterLock:Boolean;
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function WriterUnlock:Boolean;
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function WriterConvert:Boolean;
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function WriterOwner:Boolean;
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function ImageInit:Boolean; virtual;
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function LockMedia:Boolean; virtual;
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function UnlockMedia:Boolean; virtual;
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function EjectMedia:Boolean; virtual;
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function MediaReady:Boolean; virtual;
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function MediaChanged:Boolean; virtual;
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function MediaLocked:Boolean; virtual;
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function Read(ASector:LongWord; ACount:Word; var ABuffer):Boolean; virtual;
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function Write(ASector:LongWord; ACount:Word; const ABuffer):Boolean; virtual;
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function Allocated(ASector:LongWord; ACount:Word):Word; virtual;
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function MountImage:Boolean; virtual;
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function DismountImage:Boolean; virtual;
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function InsertImage:Boolean; virtual;
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function EjectImage:Boolean; virtual;
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function ConvertImage(AImageType:TImageType):Boolean; virtual;
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function CopyImage(ADest:TDiskImage):Boolean; virtual;
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function ShrinkImage(const ASize:Int64):Boolean; virtual;
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function ExpandImage(const ASize:Int64):Boolean; virtual;
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function CreateImage(AMediaType:TMediaType; AFloppyType:TFloppyType; AAttributes:LongWord; ASectorSize:Word; const ASectorCount:Int64; ACylinders,AHeads,ASectors:LongWord; APartitionId:Byte):Integer; virtual;
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function OpenImage(AMediaType:TMediaType; AFloppyType:TFloppyType; AAttributes:LongWord; ASectorSize:Word; const ASectorCount:Int64; ACylinders,AHeads,ASectors:LongWord; APartitionId:Byte):Integer; virtual;
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function CloseImage:Boolean; virtual;
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function ResizeImage(const ASectorCount:Int64):Boolean; virtual;
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function CreateSnapshot:Boolean; virtual;
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function DeleteSnapshot:Boolean; virtual;
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function MergeSnapshot:Boolean; virtual;
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Function declarations
constructor TDiskImage.Create(ADriver:TFileSysDriver; AController:TDiskController; const AName:String; AImageNo:Integer);
Description: To be documented
| Note | None documented |
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destructor TDiskImage.Destroy;
Description: To be documented
| Note | None documented |
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function TDiskImage.AcquireLock:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.ReleaseLock:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetReady:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetReadable:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetWriteable:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetEraseable:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetCylinders:LongWord;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetHeads:LongWord;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetSectors:LongWord;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetLogicalShiftCount:Word;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetSectorSize:Word;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetSectorCount:Int64;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetSectorShiftCount:Word;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetPartitionId:Byte;
Description: To be documented
| Note | None documented |
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function TDiskImage.GetName:String;
Description: To be documented
| Note | None documented |
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procedure TDiskImage.SetName(const AName:String);
Description: To be documented
| Note | None documented |
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procedure TDiskImage.SetDevice(ADevice:TDiskDevice);
Description: Set the Device and Reinitialize the Device
| Note | None documented |
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function TDiskImage.ReaderLock:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.ReaderUnlock:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.ReaderConvert:Boolean;
Description: Convert a Reader lock to a Writer lock
| Note | None documented |
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function TDiskImage.WriterLock:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.WriterUnlock:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.WriterConvert:Boolean;
Description: Convert a Writer lock to a Reader lock
| Note | None documented |
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function TDiskImage.WriterOwner:Boolean;
Description: Return True if the current thread is the writer owner
| Note | None documented |
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function TDiskImage.ImageInit:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.LockMedia:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.UnlockMedia:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.EjectMedia:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.MediaReady:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.MediaChanged:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.MediaLocked:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.Read(ASector:LongWord; ACount:Word; var ABuffer):Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.Write(ASector:LongWord; ACount:Word; const ABuffer):Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.Allocated(ASector:LongWord; ACount:Word):Word;
Description: Used by Copier to determine allocated Sectors
| Note | None documented |
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function TDiskImage.MountImage:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.DismountImage:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.InsertImage:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.EjectImage:Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.ConvertImage(AImageType:TImageType):Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.CopyImage(ADest:TDiskImage):Boolean;
Description: To be documented
| Note | Caller must hold the dest writer lock |
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function TDiskImage.ShrinkImage(const ASize:Int64):Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.ExpandImage(const ASize:Int64):Boolean;
Description: To be documented
| Note | None documented |
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function TDiskImage.CreateImage(AMediaType:TMediaType; AFloppyType:TFloppyType; AAttributes:LongWord; ASectorSize:Word; const ASectorCount:Int64; ACylinders,AHeads,ASectors:LongWord; APartitionId:Byte):Integer;
Description: Used by Imager to perform Create Image
| Note | None documented |
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function TDiskImage.OpenImage(AMediaType:TMediaType; AFloppyType:TFloppyType; AAttributes:LongWord; ASectorSize:Word; const ASectorCount:Int64; ACylinders,AHeads,ASectors:LongWord; APartitionId:Byte):Integer;
Description: To be documented
| Note | None documented |
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function TDiskImage.CloseImage:Boolean;
Description: Used by Imager to perform Close Image
| Note | None documented |
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function TDiskImage.ResizeImage(const ASectorCount:Int64):Boolean;
Description: Used by Resizer to perform Shrink or Expand Image
| Note | None documented |
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function TDiskImage.CreateSnapshot:Boolean;
Description: Used by Imager to perform Create Snapshot
| Note | None documented |
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function TDiskImage.DeleteSnapshot:Boolean;
Description: Used by Imager to perform Delete Snapshot
| Note | None documented |
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function TDiskImage.MergeSnapshot:Boolean;
Description: Used by Imager to perform Merge Snapshot
| Note | None documented |
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