TNTFSDiskNode
From Ultibo.org
Return to Unit NTFSClass
Description
To be documented
Class definitions
TNTFSDiskNode = class(TListObject)
| Note: Represents an INDX record header. | |
constructor Create(ALocalLock:TMutexHandle; AIndex:TNTFSDiskIndex);
|
|
destructor Destroy; override;
|
|
private
| |
FLocalLock:TMutexHandle;
|
|
FStatus:LongWord;
|
|
FIndexFlags:Word;
|
Flags (See Consts) |
FIndexSize:LongWord;
|
Total size of the Index Entries |
FIndexAllocated:LongWord;
|
Allocated size of the Index Entries |
FEntryOffset:LongWord;
|
Offset to first Index Entry |
FRecordNumber:Int64;
|
Number of this INDX record in the Index Allocation |
FUpdateSequenceOffset:Word;
|
Offset to the Update Sequence Record |
FUpdateSequenceLength:Word;
|
Size in words of the Update Sequence Record |
FUpdateSequenceNumber:Word;
|
Update Sequence Number |
FLogFileSequenceNumber:Int64;
|
LogFile sequence number |
FIndex:TNTFSDiskIndex;
|
Index owning this node |
FBlank:TNTFSDiskKey;
|
Blank key of this node (Blank keys do not move) |
function AcquireLock:Boolean;
|
|
function ReleaseLock:Boolean;
|
|
function GetAdded:Boolean;
|
|
procedure SetAdded(AValue:Boolean);
|
|
function GetDeleted:Boolean;
|
|
procedure SetDeleted(AValue:Boolean);
|
|
function GetChanged:Boolean;
|
|
procedure SetChanged(AValue:Boolean);
|
|
function GetModified:Boolean;
|
|
procedure SetModified(AValue:Boolean);
|
|
function GetIsRoot:Boolean;
|
|
function GetHasSubNodes:Boolean;
|
|
procedure SetHasSubNodes(AValue:Boolean);
|
|
function GetStart:TNTFSDiskKey;
|
|
public
| |
property Added:Boolean read GetAdded write SetAdded;
|
Index record to be allocated |
property Deleted:Boolean read GetDeleted write SetDeleted;
|
Index record to be deallocated |
property Changed:Boolean read GetChanged write SetChanged;
|
Index record to be updated |
property Modified:Boolean read GetModified write SetModified;
|
Index record has been added, deleted or changed |
property IsRoot:Boolean read GetIsRoot;
|
|
property HasSubNodes:Boolean read GetHasSubNodes write SetHasSubNodes;
|
|
property IndexFlags:Word read FIndexFlags write FIndexFlags;
|
|
property IndexSize:LongWord read FIndexSize write FIndexSize;
|
|
property IndexAllocated:LongWord read FIndexAllocated write FIndexAllocated;
|
|
property EntryOffset:LongWord read FEntryOffset write FEntryOffset;
|
|
property RecordNumber:Int64 read FRecordNumber write FRecordNumber;
|
|
property UpdateSequenceOffset:Word read FUpdateSequenceOffset write FUpdateSequenceOffset;
|
|
property UpdateSequenceLength:Word read FUpdateSequenceLength write FUpdateSequenceLength;
|
|
property UpdateSequenceNumber:Word read FUpdateSequenceNumber write FUpdateSequenceNumber;
|
|
property LogFileSequenceNumber:Int64 read FLogFileSequenceNumber write FLogFileSequenceNumber;
|
|
property Index:TNTFSDiskIndex read FIndex;
|
|
property Blank:TNTFSDiskKey read FBlank write FBlank;
|
|
property Start:TNTFSDiskKey read GetStart;
|
|
function KeyCount:Integer;
|
|
function IndexFree:LongWord;
|
|
function UpdateKeys(AVersion:Word):Boolean; virtual;
|
|
function CalculatedSize(AVersion:Word):LongWord;
|
|
function CalculatedOffset(AVersion:Word):LongWord;
|
|
function CalculatedAllocated(AVersion:Word):LongWord;
|
|
function CalculatedSequenceOffset(AVersion:Word):Word;
|
|
function CalculatedSequenceLength(ASectorSize:Word):Word;
|
|
function WriteEmpty(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word; var AUpdateSequenceOffset,AUpdateSequenceLength:Word):Boolean;
|
|
function ReadRecord(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
|
|
function WriteRecord(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
|
|
function ReadHeader(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
|
|
function WriteHeader(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
|
|
Function declarations
constructor TNTFSDiskNode.Create(ALocalLock:TMutexHandle; AIndex:TNTFSDiskIndex);
Description: To be documented
| Note | None documented |
|---|
destructor TNTFSDiskNode.Destroy;
Description: To be documented
| Note | None documented |
|---|
function TNTFSDiskNode.AcquireLock:Boolean;
Description: To be documented
| Note | None documented |
|---|
function TNTFSDiskNode.ReleaseLock:Boolean;
Description: To be documented
| Note | None documented |
|---|
function TNTFSDiskNode.GetAdded:Boolean;
Description: To be documented
| Note | None documented |
|---|
procedure TNTFSDiskNode.SetAdded(AValue:Boolean);
Description: To be documented
| Note | None documented |
|---|
function TNTFSDiskNode.GetDeleted:Boolean;
Description: To be documented
| Note | None documented |
|---|
procedure TNTFSDiskNode.SetDeleted(AValue:Boolean);
Description: To be documented
| Note | None documented |
|---|
function TNTFSDiskNode.GetChanged:Boolean;
Description: To be documented
| Note | None documented |
|---|
procedure TNTFSDiskNode.SetChanged(AValue:Boolean);
Description: To be documented
| Note | None documented |
|---|
function TNTFSDiskNode.GetModified:Boolean;
Description: To be documented
| Note | None documented |
|---|
procedure TNTFSDiskNode.SetModified(AValue:Boolean);
Description: To be documented
| Note | None documented |
|---|
function TNTFSDiskNode.GetIsRoot:Boolean;
Description: To be documented
| Note | None documented |
|---|
function TNTFSDiskNode.GetHasSubNodes:Boolean;
Description: To be documented
| Note | None documented |
|---|
procedure TNTFSDiskNode.SetHasSubNodes(AValue:Boolean);
Description: To be documented
| Note | None documented |
|---|
function TNTFSDiskNode.GetStart:TNTFSDiskKey;
Description: To be documented
| Note | Includes the blank key which may be the only key |
|---|
function TNTFSDiskNode.KeyCount:Integer;
Description: To be documented
| Note | Includes the blank key which may be the only key |
|---|
function TNTFSDiskNode.IndexFree:LongWord;
Description: Determine the free space remaining in the node
| Note | None documented |
|---|
function TNTFSDiskNode.UpdateKeys(AVersion:Word):Boolean;
Description: Update Flags and Sub Node Number on all keys
| Note | None documented |
|---|
function TNTFSDiskNode.CalculatedSize(AVersion:Word):LongWord;
Description: To be documented
| Note | Calculated Size includes any rounding required for alignment |
|---|
function TNTFSDiskNode.CalculatedOffset(AVersion:Word):LongWord;
Description: Determine the entry offset for this node based on version
| Note | Will be different for root node versus other nodes |
|---|
function TNTFSDiskNode.CalculatedAllocated(AVersion:Word):LongWord;
Description: Determine the index allocated for this node based on version
| Note | Will be different for root node versus other nodes |
|---|
function TNTFSDiskNode.CalculatedSequenceOffset(AVersion:Word):Word;
Description: Determine the update sequence offset for this node based on version
| Note | Root node will have a sequence offset of zero |
|---|
function TNTFSDiskNode.CalculatedSequenceLength(ASectorSize:Word):Word;
Description: Determine the update sequence length for this node based on sector size
| Note | Sequence Length is the number of Words in the update sequence array
Root node will have a sequence length of zero |
|---|
function TNTFSDiskNode.WriteEmpty(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word; var AUpdateSequenceOffset,AUpdateSequenceLength:Word):Boolean;
Description: Write an empty index record, index header and index entry to the supplied buffer at the supplied offset
| Note | None documented |
|---|
function TNTFSDiskNode.ReadRecord(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
Description: Read the index record and index header from the supplied buffer at the supplied offset
| Note | None documented |
|---|
function TNTFSDiskNode.WriteRecord(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
Description: Write the index record and index header to the supplied buffer at the supplied offset
| Note | None documented |
|---|
function TNTFSDiskNode.ReadHeader(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
Description: Read the index header from the supplied buffer at the supplied offset
| Note | None documented |
|---|
function TNTFSDiskNode.WriteHeader(ABuffer:Pointer; var AOffset,ASize:LongWord; AVersion:Word):Boolean;
Description: Write the index header to the supplied buffer at the supplied offset
| Note | None documented |
|---|
Return to Unit Reference
