Difference between revisions of "Unit NTFSUtils"

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----
 
----
  
−
'''Ultibo NTFS utilities unit'''
+
'''Ultibo NTFS Utilities unit'''
−
 
+
−
''To be documented''
+
  
 
=== Constants ===
 
=== Constants ===
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Buffer'''
+
! Buffer
 
| Buffer must always be a full compression unit in size
 
| Buffer must always be a full compression unit in size
 
|-
 
|-
−
! '''Size'''
+
! Size
 
| Size is the size of a cluster
 
| Size is the size of a cluster
 
|-
 
|-
−
! '''Shift'''
+
! Shift
 
| Shift is the cluster to compression unit shift count (Usually 4)
 
| Shift is the cluster to compression unit shift count (Usually 4)
 
|-
 
|-
−
! '''Note'''
+
! Note
 
| Caller must have confirmed that the unit is compressed
 
| Caller must have confirmed that the unit is compressed
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Source'''
+
! Source
 
| Source buffer contains the uncompressed data on entry
 
| Source buffer contains the uncompressed data on entry
 
Source buffer must always be a full compression unit in size
 
Source buffer must always be a full compression unit in size
 
|-
 
|-
−
! '''Dest'''
+
! Dest
 
| Dest buffer will contain the compressed data on exit
 
| Dest buffer will contain the compressed data on exit
 
Dest buffer must always be a full compression unit in size
 
Dest buffer must always be a full compression unit in size
 
|-
 
|-
−
! '''Size'''
+
! Size
 
| Size is the size of a cluster
 
| Size is the size of a cluster
 
|-
 
|-
−
! '''Shift'''
+
! Shift
 
| Shift is the cluster to compression unit shift count (Usually 4)
 
| Shift is the cluster to compression unit shift count (Usually 4)
 
|-
 
|-
−
! '''Start'''
+
! Start
 
| Start is the starting cluster for the compression (zero to start at the first cluster)
 
| Start is the starting cluster for the compression (zero to start at the first cluster)
 
|-
 
|-
−
! '''Count'''
+
! Count
 
| Count is the number of clusters to be compressed
 
| Count is the number of clusters to be compressed
 
|-
 
|-
−
! '''Total'''
+
! Total
 
| Total is the number of bytes to be compressed (from start) (may be less than a full unit)
 
| Total is the number of bytes to be compressed (from start) (may be less than a full unit)
 
|-
 
|-
−
! '''Note'''
+
! Note
 
| Compress block will detect an uncompressable block as the final length after compression will be greater than 4096 in length. If compress block reaches the end of the dest buffer then it will fail the compress block and compress unit and the whole unit will be considered as uncompressable. If the data available for the block is less then 4096 then it may grow after compression but will not be marked as uncompressed unless it exceeds 4096 bytes.
 
| Compress block will detect an uncompressable block as the final length after compression will be greater than 4096 in length. If compress block reaches the end of the dest buffer then it will fail the compress block and compress unit and the whole unit will be considered as uncompressable. If the data available for the block is less then 4096 then it may grow after compression but will not be marked as uncompressed unless it exceeds 4096 bytes.
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Source'''
+
! Source
 
| Source buffer contains the compressed data on entry
 
| Source buffer contains the compressed data on entry
 
Source buffer must always be a full compression unit in size
 
Source buffer must always be a full compression unit in size
 
|-
 
|-
−
! '''Dest'''
+
! Dest
 
| Dest buffer will contain the uncompressed data on exit
 
| Dest buffer will contain the uncompressed data on exit
 
Dest buffer must always be a full compression unit in size
 
Dest buffer must always be a full compression unit in size
 
|-
 
|-
−
! '''Size'''
+
! Size
 
| Size is the size of a cluster
 
| Size is the size of a cluster
 
|-
 
|-
−
! '''Shift'''
+
! Shift
 
| Shift is the cluster to compression unit shift count (Usually 4)
 
| Shift is the cluster to compression unit shift count (Usually 4)
 
|-
 
|-
−
! '''Start'''
+
! Start
 
| Start is the starting cluster for the decompression (zero to start at the first cluster)
 
| Start is the starting cluster for the decompression (zero to start at the first cluster)
 
|-
 
|-
−
! '''Count'''
+
! Count
 
| Count is the number of blocks to be decompressed
 
| Count is the number of blocks to be decompressed
 
|-
 
|-
−
! '''Total'''
+
! Total
 
| Total is the number of bytes to be decompressed (from start) (may be less than a full unit)
 
| Total is the number of bytes to be decompressed (from start) (may be less than a full unit)
 
|-
 
|-
−
! '''Note'''
+
! Note
 
| Caller must have confirmed that the unit is compressed
 
| Caller must have confirmed that the unit is compressed
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Size'''
+
! Size
 
| Size is the size of a cluster
 
| Size is the size of a cluster
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Source'''
+
! Source
 
| Source buffer contains the uncompressed data on entry
 
| Source buffer contains the uncompressed data on entry
 
Source buffer must have at least one 4k block available
 
Source buffer must have at least one 4k block available
 
|-
 
|-
−
! '''Dest'''
+
! Dest
 
| Dest buffer will contain the compressed data on exit
 
| Dest buffer will contain the compressed data on exit
 
|-
 
|-
−
! '''Size'''
+
! Size
 
| Size is the available bytes in the dest buffer
 
| Size is the available bytes in the dest buffer
 
|-
 
|-
−
! '''Total'''
+
! Total
 
| Total is the number of bytes to be compressed (may be less than a full block)
 
| Total is the number of bytes to be compressed (may be less than a full block)
 
|-
 
|-
−
! '''Note'''
+
! Note
 
| Compress block will detect an uncompressable block as the final length after compression will be greater than 4096 in length. If compress block reaches the end of the dest buffer then it will fail the compress block and compress unit and the whole unit will be considered as uncompressable. If the data available for the block is less then 4096 then it may grow after compression but will not be marked as uncompressed unless it exceeds 4096 bytes.
 
| Compress block will detect an uncompressable block as the final length after compression will be greater than 4096 in length. If compress block reaches the end of the dest buffer then it will fail the compress block and compress unit and the whole unit will be considered as uncompressable. If the data available for the block is less then 4096 then it may grow after compression but will not be marked as uncompressed unless it exceeds 4096 bytes.
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Source'''
+
! Source
 
| Source buffer contains the compressed data on entry
 
| Source buffer contains the compressed data on entry
 
|-
 
|-
−
! '''Dest'''
+
! Dest
 
| Dest buffer will contain the uncompressed data on exit
 
| Dest buffer will contain the uncompressed data on exit
 
Dest buffer must have at least one 4k block available
 
Dest buffer must have at least one 4k block available
 
|-
 
|-
−
! '''Size'''
+
! Size
 
| Size is the available bytes in the source buffer
 
| Size is the available bytes in the source buffer
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Offset'''
+
! Offset
 
| Offset is the offset into the uncompressed data at the point of the tag
 
| Offset is the offset into the uncompressed data at the point of the tag
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Note'''
+
! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
 
|-
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! '''Note'''
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! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
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! '''Note'''
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! Note
 
| None documented
 
| None documented
 
|-
 
|-
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! '''Note'''
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! Note
 
| None documented
 
| None documented
 
|-
 
|-
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|-
 
|-
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! '''Note'''
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! Note
 
| None documented
 
| None documented
 
|-
 
|-
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{| class="wikitable" style="font-size: 14px; background: white;"
 
|-
 
|-
−
! '''Size'''
+
! Size
 
| Size is the length of the Name in characters (WideChar or Word)
 
| Size is the length of the Name in characters (WideChar or Word)
 
|-
 
|-
−
! '''UpCase'''
+
! UpCase
 
| UpCase is the UpCase conversion table from NTFS volume or defaults
 
| UpCase is the UpCase conversion table from NTFS volume or defaults
 
|-
 
|-
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|-
 
|-
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! '''Note'''
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! Note
 
| None documented
 
| None documented
 
|-
 
|-
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<br />
 
<br />
  
−
'''NTFS Sid functions'''
+
'''NTFS SID functions'''
  
 
<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
 
<div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial; padding-top: 0px; padding-bottom: 15px;">
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! '''Note'''
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! Note
 
| None documented
 
| None documented
 
|-
 
|-
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! '''Note'''
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! Note
 
| None documented
 
| None documented
 
|-
 
|-
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! Note
 
| None documented
 
| None documented
 
|-
 
|-
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| None documented
 
| None documented
 
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| None documented
 
| None documented
 
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| None documented
 
| None documented
 
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| None documented
 
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| None documented
 
| None documented
 
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| None documented
 
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| None documented
 
| None documented
 
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| None documented
 
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| None documented
 
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Latest revision as of 05:39, 31 August 2021

Return to Unit Reference


Description

Ultibo NTFS Utilities unit

Constants

None defined

Type definitions

None defined

Public variables


NTFS specific variables

UpCase:PNTFSUpCaseData = nil; A default $UpCase table


Function declarations


NTFS support functions 

function NTFSInitUpCase:Boolean;
Description: To be documented
Note None documented 


function NTFSGetUpCase:PNTFSUpCaseData;
Description: To be documented
Note None documented


NTFS compression functions 

function NTFSGetUnitUsed(ABuffer:Pointer; ASize,AShift:LongWord):LongWord;
Description: Get the actual size consumed by the compressed data in the unit
Buffer Buffer must always be a full compression unit in size
Size Size is the size of a cluster
Shift Shift is the cluster to compression unit shift count (Usually 4)
Note Caller must have confirmed that the unit is compressed 


function NTFSCompressUnit(ASource,ADest:Pointer; ASize,AShift,AStart,ACount,ATotal:LongWord):Boolean;
Description: Compress a unit of data from source to dest buffers
Source Source buffer contains the uncompressed data on entry

Source buffer must always be a full compression unit in size

Dest Dest buffer will contain the compressed data on exit

Dest buffer must always be a full compression unit in size

Size Size is the size of a cluster
Shift Shift is the cluster to compression unit shift count (Usually 4)
Start Start is the starting cluster for the compression (zero to start at the first cluster)
Count Count is the number of clusters to be compressed
Total Total is the number of bytes to be compressed (from start) (may be less than a full unit)
Note Compress block will detect an uncompressable block as the final length after compression will be greater than 4096 in length. If compress block reaches the end of the dest buffer then it will fail the compress block and compress unit and the whole unit will be considered as uncompressable. If the data available for the block is less then 4096 then it may grow after compression but will not be marked as uncompressed unless it exceeds 4096 bytes. 


function NTFSDecompressUnit(ASource,ADest:Pointer; ASize,AShift,AStart,ACount,ATotal:LongWord):Boolean;
Description: Decompress a unit (or partial unit) of data from source to dest buffers
Source Source buffer contains the compressed data on entry

Source buffer must always be a full compression unit in size

Dest Dest buffer will contain the uncompressed data on exit

Dest buffer must always be a full compression unit in size

Size Size is the size of a cluster
Shift Shift is the cluster to compression unit shift count (Usually 4)
Start Start is the starting cluster for the decompression (zero to start at the first cluster)
Count Count is the number of blocks to be decompressed
Total Total is the number of bytes to be decompressed (from start) (may be less than a full unit)
Note Caller must have confirmed that the unit is compressed 


function NTFSGetBlockShift(ASize:LongWord):LongWord;
Description: Get the shift count for cluster to 4k block conversion
Size Size is the size of a cluster 


function NTFSCompressBlock(ASource,ADest:Pointer; ASize,ATotal:LongWord):Boolean;
Description: Compress a 4k block of data from source to dest buffers
Source Source buffer contains the uncompressed data on entry

Source buffer must have at least one 4k block available

Dest Dest buffer will contain the compressed data on exit
Size Size is the available bytes in the dest buffer
Total Total is the number of bytes to be compressed (may be less than a full block)
Note Compress block will detect an uncompressable block as the final length after compression will be greater than 4096 in length. If compress block reaches the end of the dest buffer then it will fail the compress block and compress unit and the whole unit will be considered as uncompressable. If the data available for the block is less then 4096 then it may grow after compression but will not be marked as uncompressed unless it exceeds 4096 bytes. 


function NTFSDecompressBlock(ASource,ADest:Pointer; ASize:LongWord):Boolean;
Description: Decompress a 4k block of data from source to dest buffers
Source Source buffer contains the compressed data on entry
Dest Dest buffer will contain the uncompressed data on exit

Dest buffer must have at least one 4k block available

Size Size is the available bytes in the source buffer 


function NTFSGetTagShiftMask(AOffset:LongWord; var AMask,AShift:Word):Boolean;
Description: Get the Mask bits and Shift count for Tag encode and decode based on the offset
Offset Offset is the offset into the uncompressed data at the point of the tag


NTFS string functions 

function NTFSBufferToString(ABuffer:Pointer; AOffset:LongWord; ALength:LongWord):String;
Description: To be documented
Note None documented 


function NTFSStringToBuffer(const AString:String; ABuffer:Pointer; AOffset:LongWord; ALength:LongWord):Boolean;
Description: To be documented
Note None documented 


function NTFSWideBufferToString(ABuffer:Pointer; AOffset:LongWord; ALength:LongWord):String;
Description: To be documented
Note None documented 


function NTFSStringToWideBuffer(const AString:String; ABuffer:Pointer; AOffset:LongWord; ALength:LongWord):Boolean;
Description: To be documented
Note None documented 


function NTFSTypeToString(AType:TNTFSType):String;
Description: To be documented
Note None documented


NTFS hash functions 

function NTFSGenerateNameHash(AName:PWideChar; ASize:Integer; AUpCase:PNTFSUpCaseData):LongWord;
Description: To be documented
Size Size is the length of the Name in characters (WideChar or Word)
UpCase UpCase is the UpCase conversion table from NTFS volume or defaults 


function NTFSGenerateSecurityHash(ADescriptor:Pointer; ASize:LongWord):LongWord;
Description: To be documented
Note None documented


NTFS SID functions 

function NTFSCreateDefaultSid(AType:LongWord; var ACreated:Pointer; AVersion:Word):Boolean;
Description: To be documented
Note None documented 


function NTFSDestroyDefaultSid(ASid:Pointer; AVersion:Word):Boolean;
Description: To be documented
Note None documented


NTFS descriptor functions 

function NTFSCreateDefaultDescriptor(AType:LongWord; var ACreated:Pointer; AVersion:Word):Boolean;
Description: To be documented
Note None documented 


function NTFSCreateInheritedDescriptor(AParent:Pointer; var ACreated:Pointer; AVersion:Word):Boolean;
Description: To be documented
Note None documented 


function NTFSCreateMergedDescriptor(AParent,AChild:Pointer; var ACreated:Pointer; AVersion:Word):Boolean;
Description: To be documented
Note None documented 


function NTFSDestroyDefaultDescriptor(ADescriptor:Pointer; AVersion:Word):Boolean;
Description: To be documented
Note None documented 


function NTFSDestroyInheritedDescriptor(ADescriptor:Pointer; AVersion:Word):Boolean;
Description: To be documented
Note None documented 


function NTFSDestroyMergedDescriptor(ADescriptor:Pointer; AVersion:Word):Boolean;
Description: To be documented
Note None documented


NTFS conversion functions 

function NTFSAttributeNameToStreamName(AType:LongWord; const AName:String):String;
Description: Format Attribute Name as a Stream Name (eg :<Name>:<Type>)
Note None documented 


function NTFSStreamNameToAttributeName(AType:LongWord; const AName:String):String;
Description: Extract Attribute Name from a Stream Name (eg :<Name>:<Type>)
Note None documented


NTFS rounding functions 

function NTFSRoundWordTo8Bytes(AValue:Word):Word;
Description: To be documented
Note None documented 


function NTFSRoundWordTo16Bytes(AValue:Word):Word;
Description: To be documented
Note None documented 


function NTFSRoundWordTo512Bytes(AValue:Word):Word;
Description: To be documented
Note None documented 


function NTFSRoundLongWordTo8Bytes(AValue:LongWord):LongWord;
Description: To be documented
Note None documented 


function NTFSRoundLongWordTo16Bytes(AValue:LongWord):LongWord;
Description: To be documented
Note None documented 


function NTFSRoundLongWordTo512Bytes(AValue:LongWord):LongWord;
Description: To be documented
Note None documented 


function NTFSRoundQuadWordTo8Bytes(const AValue:Int64):Int64;
Description: To be documented
Note None documented 


function NTFSRoundQuadWordTo16Bytes(const AValue:Int64):Int64;
Description: To be documented
Note None documented 


function NTFSRoundQuadWordTo512Bytes(const AValue:Int64):Int64;
Description: To be documented
Note None documented 


function NTFSRoundWordToUnitSize(AValue:Word; AShift,ASize:LongWord):Word;
Description: To be documented
Note None documented 


function NTFSRoundLongWordToUnitSize(AValue,AShift,ASize:LongWord):LongWord;
Description: To be documented
Note None documented 


function NTFSRoundQuadWordToUnitSize(const AValue:Int64; AShift,ASize:LongWord):Int64;
Description: To be documented
Note None documented 


function NTFSRoundWordToClusterSize(AValue:Word;AShift,ASize:LongWord):Word;
Description: To be documented
Note None documented 


function NTFSRoundLongWordToClusterSize(AValue,AShift,ASize:LongWord):LongWord;
Description: To be documented
Note None documented 


function NTFSRoundQuadWordToClusterSize(const AValue:Int64; AShift,ASize:LongWord):Int64;
Description: To be documented
Note None documented


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