Return to Unit NTFSClass
Description
To be documented
Class definitions
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TNTFSDiskAttribute = class(TListObject)
constructor Create(ALocalLock:TMutexHandle; AParent:TNTFSDiskRecord);
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destructor Destroy; override;
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private
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FLocalLock:TMutexHandle;
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protected
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FStatus:LongWord;
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FData:Pointer;
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Only applicable if attribute is resident
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FAttributeType:LongWord;
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Attribute Type (e.g. 0x80, 0xA0)
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FAttributeSize:LongWord;
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Length of the Attribute (including header)
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FAttributeFlags:Word;
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Attribute Flags
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FAttributeId:Word;
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Attribute Id
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FAttributeName:String;
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Attribute Name
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FNonResident:Byte;
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Non-resident flag
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FIndexed:Byte;
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Indexed flag
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FDataSize:LongWord;
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Length of the Attribute Data
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FStartVCN:Int64;
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Starting VCN
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FLastVCN:Int64;
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Last VCN
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FStreamSize:Int64;
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Real size of the attribute
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FStreamUsed:Int64;
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The actual Allocated size of the attribute (Only present when compressed and only in the first instance)
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FStreamAllocated:Int64;
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Allocated size of the attribute
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FInitializedSize:Int64;
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Initialized data size of the stream (Portion which has been Written)
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FCompressionUnit:Word;
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Compression Unit Size
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FRuns:TNTFSDiskRuns;
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List of runs of this attribute
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FItems:TNTFSDiskItems;
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List of items of this attribute
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FIndex:TNTFSDiskIndex;
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Index of this attribute if applicable
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FParent:TNTFSDiskRecord;
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Record owning this attribute
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FAttributeHash:LongWord;
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function AcquireLock:Boolean;
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function ReleaseLock:Boolean;
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function GetRunsLock:TSynchronizerHandle;
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function GetItemsLock:TSynchronizerHandle;
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function GetIndexLock:TSynchronizerHandle;
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function GetExtendedsLock:TSynchronizerHandle;
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function GetRunLocal:TMutexHandle;
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function GetItemLocal:TMutexHandle;
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function GetKeyLocal:TMutexHandle;
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function GetExtendedLocal:TMutexHandle;
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function GetUpdating:Boolean;
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procedure SetUpdating(AValue:Boolean);
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function GetIsFixed:Boolean;
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function GetIsSingle:Boolean;
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function GetIsUnlisted:Boolean;
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function GetIsUnmovable:Boolean;
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function GetIsManaged:Boolean;
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function GetIsSparse:Boolean;
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procedure SetIsSparse(AValue:Boolean);
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function GetIsEncrypted:Boolean;
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procedure SetIsEncrypted(AValue:Boolean);
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function GetIsCompressed:Boolean;
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procedure SetIsCompressed(AValue:Boolean);
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function GetAttributeName:String;
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procedure SetAttributeName(const AAttributeName:String);
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function GetDataSize:LongWord; virtual;
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procedure SetDataSize(AValue:LongWord); virtual;
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function Compare(AAttribute:TNTFSDiskAttribute):Integer; virtual;
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function CreateRuns(ANew:Boolean):TNTFSDiskRuns;
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function CreateItems(ANew:Boolean):TNTFSDiskItems;
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function GetRecord(AInstance:Integer):TNTFSDiskRecord;
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function GetAttribute(AType:LongWord; const AName:String; AInstance:Integer):TNTFSDiskAttribute;
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public
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property Updating:Boolean read GetUpdating write SetUpdating;
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property IsFixed:Boolean read GetIsFixed;
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property IsSingle:Boolean read GetIsSingle;
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property IsUnlisted:Boolean read GetIsUnlisted;
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property IsUnmovable:Boolean read GetIsUnmovable;
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property IsManaged:Boolean read GetIsManaged;
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property IsSparse:Boolean read GetIsSparse write SetIsSparse;
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property IsEncrypted:Boolean read GetIsEncrypted write SetIsEncrypted;
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property IsCompressed:Boolean read GetIsCompressed write SetIsCompressed;
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property Data:Pointer read FData;
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property AttributeType:LongWord read FAttributeType;
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property AttributeSize:LongWord read FAttributeSize write FAttributeSize;
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property AttributeFlags:Word read FAttributeFlags write FAttributeFlags;
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property AttributeId:Word read FAttributeId write FAttributeId;
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property AttributeName:String read GetAttributeName write SetAttributeName;
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property NonResident:Byte read FNonResident write FNonResident;
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property Indexed:Byte read FIndexed write FIndexed;
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property DataSize:LongWord read GetDataSize write SetDataSize;
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property StartVCN:Int64 read FStartVCN write FStartVCN;
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property LastVCN:Int64 read FLastVCN write FLastVCN;
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property StreamSize:Int64 read FStreamSize write FStreamSize;
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property StreamUsed:Int64 read FStreamUsed write FStreamUsed;
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property StreamAllocated:Int64 read FStreamAllocated write FStreamAllocated;
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property InitializedSize:Int64 read FInitializedSize write FInitializedSize;
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property CompressionUnit:Word read FCompressionUnit write FCompressionUnit;
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property Runs:TNTFSDiskRuns read FRuns;
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property Items:TNTFSDiskItems read FItems;
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property Index:TNTFSDiskIndex read FIndex;
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property Parent:TNTFSDiskRecord read FParent write FParent;
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property AttributeHash:LongWord read FAttributeHash;
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function GetRunCount(const AVCN:Int64; var AStartVCN,ACount:Int64):Boolean;
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function GetRunLength(const AVCN:Int64; var AStartVCN,ALength:Int64):Boolean;
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function GetRunByUnit(const AUnit:Int64; var AStartVCN:Int64):TNTFSDiskRun;
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function GetRunByCluster(const ACluster:Int64; var AStartVCN:Int64):TNTFSDiskRun;
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function CreateRun(ANew:Boolean):TNTFSDiskRun;
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function DestroyRun(ARun:TNTFSDiskRun):Boolean;
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function NewRun(const AStart,ALength:Int64):TNTFSDiskRun;
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function InsertRun(APrev:TNTFSDiskRun; const AStart,ALength:Int64):TNTFSDiskRun;
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function GetRun(const AVCN:Int64; var AStartVCN:Int64):TNTFSDiskRun;
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function MergeRun(ARun:TNTFSDiskRun):Boolean;
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function SplitRun(ARun:TNTFSDiskRun; const ALength:Int64):Boolean;
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function RemoveRun(ARun:TNTFSDiskRun):Boolean;
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function MoveRun(ADest:TNTFSDiskAttribute; ARun:TNTFSDiskRun):Boolean;
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function GetItemByAttribute(AAttribute:TNTFSDiskAttribute):TNTFSDiskItem;
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function CreateItem(ANew:Boolean):TNTFSDiskItem;
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function DestroyItem(AItem:TNTFSDiskItem):Boolean;
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function NewItem(AAttribute:TNTFSDiskAttribute):TNTFSDiskItem;
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function GetItem(AType:LongWord; const AName:String; AInstance:Integer):TNTFSDiskItem;
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function RemoveItem(AItem:TNTFSDiskItem):Boolean;
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function MoveItem(AItem:TNTFSDiskItem; AAttribute:TNTFSDiskAttribute):Boolean;
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function RenameItem(AItem:TNTFSDiskItem; AAttribute:TNTFSDiskAttribute):Boolean;
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function CreateIndex(AVersion,ASector:Word):Boolean; virtual;
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function NewIndex(AVersion,ASector:Word; AType,ARule,ASize,AOffset:LongWord):Boolean; virtual;
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function RecordNumber:Int64;
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function FileReference:Int64;
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function BaseReference:Int64;
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function RunOffset:Word;
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Offset to the Data Run
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function DataOffset:Word;
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Offset to the Attribute Data
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function AttributeNameSize:Word;
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function AttributeNameLength:Byte;
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Name length
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function AttributeNameOffset:Word;
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Offset to the Name
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function RunCount:LongWord;
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function ItemCount:LongWord;
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function CalculatedSize(AVersion:Word):LongWord; virtual;
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function CalculatedDataSize(AVersion:Word):LongWord; virtual;
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function CalculatedStreamSize(AVersion:Word):Int64; virtual;
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function CalculatedStreamUsed(AVersion:Word):Int64; virtual;
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function CoalesceRun(ARun:TNTFSDiskRun):Boolean;
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function UpdateRun(ARun:TNTFSDiskRun):Boolean;
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function UpdateKey(AKey:TNTFSDiskKey):Boolean; virtual;
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function UpdateItem(AItem:TNTFSDiskItem):Boolean; virtual;
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function UpdateEntry(AEntry:TNTFSDiskEntry):Boolean; virtual;
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function UpdateAttribute(AEntry:TNTFSDiskEntry):Boolean; virtual;
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function ReadRuns(ABuffer:Pointer; var AOffset:LongWord; AVersion:Word):Boolean;
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function WriteRuns(ABuffer:Pointer; var AOffset:LongWord; AVersion:Word):Boolean;
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function ReadItems(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
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function WriteItems(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
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function ReadData(ABuffer:Pointer; var AOffset:LongWord; AVersion:Word):Boolean; virtual;
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function WriteData(ABuffer:Pointer; var AOffset:LongWord; AVersion:Word):Boolean; virtual;
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function ReadAttribute(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean; virtual;
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function WriteAttribute(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean; virtual;
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Function declarations
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constructor TNTFSDiskAttribute.Create(ALocalLock:TMutexHandle; AParent:TNTFSDiskRecord);
Description: To be documented
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destructor TNTFSDiskAttribute.Destroy;
Description: To be documented
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function TNTFSDiskAttribute.AcquireLock:Boolean;
Description: To be documented
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function TNTFSDiskAttribute.ReleaseLock:Boolean;
Description: To be documented
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function TNTFSDiskAttribute.GetRunsLock:TSynchronizerHandle;
Description: To be documented
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function TNTFSDiskAttribute.GetItemsLock:TSynchronizerHandle;
Description: To be documented
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function TNTFSDiskAttribute.GetIndexLock:TSynchronizerHandle;
Description: To be documented
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function TNTFSDiskAttribute.GetExtendedsLock:TSynchronizerHandle;
Description: To be documented
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function TNTFSDiskAttribute.GetRunLocal:TMutexHandle;
Description: To be documented
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function TNTFSDiskAttribute.GetItemLocal:TMutexHandle;
Description: To be documented
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function TNTFSDiskAttribute.GetKeyLocal:TMutexHandle;
Description: To be documented
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function TNTFSDiskAttribute.GetExtendedLocal:TMutexHandle;
Description: To be documented
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function TNTFSDiskAttribute.GetUpdating:Boolean;
Description: To be documented
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procedure TNTFSDiskAttribute.SetUpdating(AValue:Boolean);
Description: To be documented
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function TNTFSDiskAttribute.GetIsFixed:Boolean;
Description: To be documented
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function TNTFSDiskAttribute.GetIsSingle:Boolean;
Description: To be documented
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function TNTFSDiskAttribute.GetIsUnlisted:Boolean;
Description: To be documented
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function TNTFSDiskAttribute.GetIsUnmovable:Boolean;
Description: To be documented
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function TNTFSDiskAttribute.GetIsManaged:Boolean;
Description: To be documented
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function TNTFSDiskAttribute.GetIsSparse:Boolean;
Description: To be documented
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procedure TNTFSDiskAttribute.SetIsSparse(AValue:Boolean);
Description: To be documented
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function TNTFSDiskAttribute.GetIsEncrypted:Boolean;
Description: To be documented
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procedure TNTFSDiskAttribute.SetIsEncrypted(AValue:Boolean);
Description: To be documented
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function TNTFSDiskAttribute.GetIsCompressed:Boolean;
Description: To be documented
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procedure TNTFSDiskAttribute.SetIsCompressed(AValue:Boolean);
Description: To be documented
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function TNTFSDiskAttribute.GetAttributeName:String;
Description: To be documented
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procedure TNTFSDiskAttribute.SetAttributeName(const AAttributeName:String);
Description: To be documented
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function TNTFSDiskAttribute.GetDataSize:LongWord;
Description: To be documented
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procedure TNTFSDiskAttribute.SetDataSize(AValue:LongWord);
Description: To be documented
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function TNTFSDiskAttribute.Compare(AAttribute:TNTFSDiskAttribute):Integer;
Description: Compare attribute by type, name and vcn for sort order
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The passed attribute is the first value in a standard compare
Id is not used for sort order as it is unique per file record
Name is compared using a case insensitive compare method
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function TNTFSDiskAttribute.CreateRuns(ANew:Boolean):TNTFSDiskRuns;
Description: To be documented
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function TNTFSDiskAttribute.CreateItems(ANew:Boolean):TNTFSDiskItems;
Description: To be documented
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function TNTFSDiskAttribute.GetRecord(AInstance:Integer):TNTFSDiskRecord;
Description: Used by TNTFSDiskRecord.GetRecord methods to enumerate records within a list
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function TNTFSDiskAttribute.GetAttribute(AType:LongWord; const AName:String; AInstance:Integer):TNTFSDiskAttribute;
Description: Used by TNTFSDiskRecord.GetAttribute methods to enumerate attributes within a list
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function TNTFSDiskAttribute.GetRunCount(const AVCN:Int64; var AStartVCN,ACount:Int64):Boolean;
Description: Get the count of clusters from the supplied VCN to the end of the attributes runs
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StartVCN will be the start of the run containing the VCN
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function TNTFSDiskAttribute.GetRunLength(const AVCN:Int64; var AStartVCN,ALength:Int64):Boolean;
Description: Get the count of clusters from the supplied VCN to the end of run containing the VCN
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StartVCN will be the start of the run containing the VCN
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function TNTFSDiskAttribute.GetRunByUnit(const AUnit:Int64; var AStartVCN:Int64):TNTFSDiskRun;
Description: Get the run containing the supplied compression unit
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StartVCN will be the start of the run, not neccessarily the start of the unit.
This will only work on the first instance
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function TNTFSDiskAttribute.GetRunByCluster(const ACluster:Int64; var AStartVCN:Int64):TNTFSDiskRun;
Description: Get the run containing the supplied cluster
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Not Required for FileSystem, may be used by Defragger
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function TNTFSDiskAttribute.CreateRun(ANew:Boolean):TNTFSDiskRun;
Description: Create a run, add to list do not update attribute
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function TNTFSDiskAttribute.DestroyRun(ARun:TNTFSDiskRun):Boolean;
Description: Remove the run from the list and free, do not update attribute
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function TNTFSDiskAttribute.NewRun(const AStart,ALength:Int64):TNTFSDiskRun;
Description: Create a run, insert in list and update attribute
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function TNTFSDiskAttribute.InsertRun(APrev:TNTFSDiskRun; const AStart,ALength:Int64):TNTFSDiskRun;
Description: Create a run, insert in list and update attribute
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function TNTFSDiskAttribute.GetRun(const AVCN:Int64; var AStartVCN:Int64):TNTFSDiskRun;
Description: Get the run containing the supplied VCN
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function TNTFSDiskAttribute.MergeRun(ARun:TNTFSDiskRun):Boolean;
Description: Merge the run with the next run in the list and delete the merged run
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If supplied run is normal then next run must be contiguous or merge will fail
If supplied run is sparse then next run must also be sparse or merge will fail
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function TNTFSDiskAttribute.SplitRun(ARun:TNTFSDiskRun; const ALength:Int64):Boolean;
Description: Split the run at the supplied length and insert a new run in the list
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New run will be inserted as the next run following the supplied run
Supplied run can be either normal or sparse
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function TNTFSDiskAttribute.RemoveRun(ARun:TNTFSDiskRun):Boolean;
Description: Remove the run from the list, free and update attribute
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Run must be the last actual run (not Last)
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[Expand]
function TNTFSDiskAttribute.MoveRun(ADest:TNTFSDiskAttribute; ARun:TNTFSDiskRun):Boolean;
Description: Remove the run from the list and insert in the list of passed attribute
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Run must be the last actual run (not Last)
Run will be inserted first in the destination
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function TNTFSDiskAttribute.GetItemByAttribute(AAttribute:TNTFSDiskAttribute):TNTFSDiskItem;
Description: Get the item which references the supplied attribute
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function TNTFSDiskAttribute.CreateItem(ANew:Boolean):TNTFSDiskItem;
Description: Create an item, add to end of list do not update attribute
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function TNTFSDiskAttribute.DestroyItem(AItem:TNTFSDiskItem):Boolean;
Description: Remove the item from the list and free, do not update attribute
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function TNTFSDiskAttribute.NewItem(AAttribute:TNTFSDiskAttribute):TNTFSDiskItem;
Description: Create an item, insert in sorted list and update attribute
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function TNTFSDiskAttribute.GetItem(AType:LongWord; const AName:String; AInstance:Integer):TNTFSDiskItem;
Description: Get an item by type, name and instance
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function TNTFSDiskAttribute.RemoveItem(AItem:TNTFSDiskItem):Boolean;
Description: Remove the item from the list, free and update attribute
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function TNTFSDiskAttribute.MoveItem(AItem:TNTFSDiskItem; AAttribute:TNTFSDiskAttribute):Boolean;
Description: Remove the item from the list and reinsert with the new parent reference
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function TNTFSDiskAttribute.RenameItem(AItem:TNTFSDiskItem; AAttribute:TNTFSDiskAttribute):Boolean;
Description: Remove the item from the list and reinsert with the new name
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function TNTFSDiskAttribute.CreateIndex(AVersion,ASector:Word):Boolean;
Description: Create an index, setup properties do not update attribute
[Expand]
function TNTFSDiskAttribute.NewIndex(AVersion,ASector:Word; AType,ARule,ASize,AOffset:LongWord):Boolean;
Description: Create an index, setup properties and update attribute
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function TNTFSDiskAttribute.RecordNumber:Int64;
Description: To be documented
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function TNTFSDiskAttribute.FileReference:Int64;
Description: To be documented
[Expand]
function TNTFSDiskAttribute.BaseReference:Int64;
Description: Returns parent reference when no base record is assigned (ie parent record is the base)
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function TNTFSDiskAttribute.RunOffset:Word;
Description: To be documented
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function TNTFSDiskAttribute.DataOffset:Word;
Description: Data Offset is supplied even if no data exists
[Expand]
function TNTFSDiskAttribute.AttributeNameSize:Word;
Description: To be documented
[Expand]
function TNTFSDiskAttribute.AttributeNameLength:Byte;
Description: To be documented
[Expand]
function TNTFSDiskAttribute.AttributeNameOffset:Word;
Description: Name Offset is supplied even if no name exists
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function TNTFSDiskAttribute.RunCount:LongWord;
Description: To be documented
[Expand]
function TNTFSDiskAttribute.ItemCount:LongWord;
Description: To be documented
[Expand]
function TNTFSDiskAttribute.CalculatedSize(AVersion:Word):LongWord;
Description: To be documented
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Calculated Size includes any rounding required for alignment
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[Expand]
function TNTFSDiskAttribute.CalculatedDataSize(AVersion:Word):LongWord;
Description: Calculated Data Size is the actual size of the data following the attribute header
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This will be the Data Size for Resident and the Run Size for Non Resident but may be overridden by descendants
Size Attribute will use this value to update the Attribute and Record Sizes
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[Expand]
function TNTFSDiskAttribute.CalculatedStreamSize(AVersion:Word):Int64;
Description: Calculated Stream Size is the actual size of the data stream of the attribute
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This will be the Data Size value for Resident, and the Stream Size value for Non Resident but may be overridden by descendants.
This is the value that should be passed to Size Attribute
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[Expand]
function TNTFSDiskAttribute.CalculatedStreamUsed(AVersion:Word):Int64;
Description: Calculated Stream Used is the actual allocated size of the data stream in a compressed attribute
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This will be the same as the Data Size value for Resident but will be the total allocated runs (Non Sparse) for Non Resident
Size Attribute will use this value to update Stream Used
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function TNTFSDiskAttribute.CoalesceRun(ARun:TNTFSDiskRun):Boolean;
Description: Coalesce all runs in the list starting at the supplied run or first if not supplied
[Expand]
function TNTFSDiskAttribute.UpdateRun(ARun:TNTFSDiskRun):Boolean;
Description: Update all runs in the list starting at the supplied run or first if not supplied
[Expand]
function TNTFSDiskAttribute.UpdateKey(AKey:TNTFSDiskKey):Boolean;
Description: To be documented
[Expand]
function TNTFSDiskAttribute.UpdateItem(AItem:TNTFSDiskItem):Boolean;
Description: To be documented
[Expand]
function TNTFSDiskAttribute.UpdateEntry(AEntry:TNTFSDiskEntry):Boolean;
Description: To be documented
[Expand]
function TNTFSDiskAttribute.UpdateAttribute(AEntry:TNTFSDiskEntry):Boolean;
Description: To be documented
[Expand]
function TNTFSDiskAttribute.ReadRuns(ABuffer:Pointer; var AOffset:LongWord; AVersion:Word):Boolean;
Description: Read the attribute data runs from the supplied buffer at the supplied offset
[Expand]
function TNTFSDiskAttribute.WriteRuns(ABuffer:Pointer; var AOffset:LongWord; AVersion:Word):Boolean;
Description: Write the attribute data runs to the supplied buffer at the supplied offset
[Expand]
function TNTFSDiskAttribute.ReadItems(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
Description: Read the attribute data items from the supplied buffer at the supplied offset
[Expand]
function TNTFSDiskAttribute.WriteItems(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
Description: Write the attribute data items to the supplied buffer at the supplied offset
[Expand]
function TNTFSDiskAttribute.ReadData(ABuffer:Pointer; var AOffset:LongWord; AVersion:Word):Boolean;
Description: Read the resident attribute data from the supplied buffer at the supplied offset
[Expand]
function TNTFSDiskAttribute.WriteData(ABuffer:Pointer; var AOffset:LongWord; AVersion:Word):Boolean;
Description: Write the resident attribute data to the supplied buffer at the supplied offset
[Expand]
function TNTFSDiskAttribute.ReadAttribute(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
Description: Read the attribute header and resident attribute data or data runs from the supplied buffer at the supplied offset
[Expand]
function TNTFSDiskAttribute.WriteAttribute(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
Description: Write the attribute header and resident attribute data or data runs to the supplied buffer at the supplied offset
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