ISO IEC 13346-4-1999 Information technology - Volume and file structure of write-once and rewritable media using non-sequential recording for information interc.pdf

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1、BC Referencenumber ISO/IEC133464:1999(E) INTERNATIONAL STANDARD ISO/IEC 133464 Secondedition 19990401 InformationtechnologyVolumeandfile structureofwriteonceandrewritable mediausingnonsequentialrecordingfor informationinterchange Part4: Filestructure TechnologiesdelinformationStructuredevolumeetdefi

2、chierde moyensdcritureuniqueetdercritureutilisantunenregistrementnon squentielpourlchangedinformation Partie4:StructuredefichierISO/IEC133464:1999(E) ISO/IEC1999 Allrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproduced orutilizedinanyformorbyanymeans,electronicormechanical,i

3、ncludingphotocopyingand microfilm,withoutpermissioninwritingfromthepublisher. ISO/IECCopyrightOffice Casepostale56 CH1211Genve20 Switzerland PrintedinSwitzerland ii Contents 1Scope 1 2Partsreferences. 1 3Partinterface. .2 3.1Input .2 3.2Output . .2 4Conformance 3 4.1Conformanceofamedium 3 4.2Conform

4、anceofaninformationprocessingsystem 3 5Definitions 3 5.1Extent. 3 5.2Fileset. .3 5.3GroupID. 3 5.4Logicalblock .3 5.5Logicalvolume. .3 5.6Partition .3 5.7Stream. .3 5.8UserID .3 6Notation . .3 7Basictypes .4 7.1Recordedaddress. 4 7.1.1LogicalBlockNumber(RBP0). 4ISO/IEC ISO/IEC133464:1999(E) iii 7.1.

5、2PartitionReferenceNumber(RBP4) . 4 7.2DescriptorTag . . 4 7.2.1TagIdentifier(RBP0) . . 4 7.2.2DescriptorVersion(RBP2). 5 7.2.3TagChecksum(RBP4) . 5 7.2.4Reserved(RBP5). 5 7.2.5TagSerialNumber(RBP6) . 5 7.2.6DescriptorCRC(RBP8). . 6 7.2.7DescriptorCRCLength(RBP10). 6 7.2.8TagLocation(RBP12) 6 8Files

6、tructure . . 6 8.1Volumeset. 6 8.2Arrangementofinformationonavolumeset. . 6 8.3Arrangementofinformationonalogicalvolume. . 6 8.3.1FileSetDescriptorSequence. 6 8.4Arrangementofinformationonapartition 7 8.5Fileset . 7 8.6Directories . 7 8.6.1Orderofdirectorydescriptors. . 8 8.6.2Directoryhierarchysize

7、restrictions . 9 8.7Pathname. 9 8.7.1Resolvedpathname . 9 8.8Files 9 8.8.1Attributesofafile . . 10 8.8.2Dataspaceofafile . . 10 8.8.3StreamsofaFile 11 8.9Recordstructure. 11 8.10InformationControlBlock(ICB). . 11 8.10.1ICBhierarchy . 12 9AdditionalFileData . 12ISO/IEC133464:1999(E) ISO/IEC iv 9.1Ext

8、endedattributes 12 9.2StreamDirectory. 14 10Partitionspacemanagement 14 10.1Spacesets .14 11Partitionintegrity . 15 12Allocationdescriptors .15 12.1DescriptionofFiles .16 13Recordingofdescriptors 16 14FileDataStructures .16 14.1FileSetDescriptor . .16 14.1.1DescriptorTag(BP0) . .17 14.1.2RecordingDa

9、teandTime(BP16) . .17 14.1.3InterchangeLevel(BP28). 17 14.1.4MaximumInterchangeLevel(BP30) . 17 14.1.5CharacterSetList(BP32) .17 14.1.6MaximumCharacterSetList(BP36) .17 14.1.7FileSetNumber(BP40) . .18 14.1.8FileSetDescriptorNumber(BP44) .18 14.1.9LogicalVolumeIdentifierCharacterSet(BP48) . .18 14.1.

10、10LogicalVolumeIdentifier(BP112). 18 14.1.11FileSetCharacterSet(BP240) 18 14.1.12FileSetIdentifier(BP304). 18 14.1.13CopyrightFileIdentifier(BP336) . 18 14.1.14AbstractFileIdentifier(BP368) .18 14.1.15RootDirectoryICB(BP400) .19 14.1.16DomainIdentifier(BP416) . .19 14.1.17NextExtent(BP448). .19 14.1

11、.18SystemStreamDirectory(BP464). 19 14.1.19Reserved(BP480) .19 14.2TerminatingDescriptor 19ISO/IEC ISO/IEC133464:1999(E) v 14.2.1DescriptorTag(BP0). . 19 14.2.2Reserved(BP16) . 19 14.3PartitionHeaderDescriptor. 19 14.3.1UnallocatedSpaceTable(RBP0) . . 20 14.3.2UnallocatedSpaceBitmap(RBP8) 20 14.3.3P

12、artitionIntegrityTable(RBP16) . 20 14.3.4FreedSpaceTable(RBP24) . 20 14.3.5FreedSpaceBitmap(RBP32) . . 20 14.3.6Reserved(RBP40). 20 14.4FileIdentifierDescriptor 20 14.4.1DescriptorTag(RBP0) . 21 14.4.2FileVersionNumber(RBP16) 21 14.4.3FileCharacteristics(RBP18). . 21 14.4.4LengthofFileIdentifier(=L_

13、FI)(RBP19) 22 14.4.5ICB(RBP20) . 22 14.4.6LengthofImplementationUse(=L_IU)(RBP36). . 22 14.4.7ImplementationUse(RBP38). 22 14.4.8FileIdentifier(RBPL_IU+38) . . 23 14.4.9Padding(RBPL_FI+L_IU+38) . 23 14.5AllocationExtentDescriptor . 23 14.5.1DescriptorTag(BP0). . 23 14.5.2PreviousAllocationExtentLoca

14、tion(BP16). . 23 14.5.3LengthofAllocationDescriptors(=L_AD)(BP20) 23 14.6ICBTag . . 23 14.6.1PriorRecordedNumberofDirectEntries(RBP0) . 24 14.6.2StrategyType(RBP4). 24 14.6.3StrategyParameter(RBP6) 24 14.6.4MaximumNumberofEntries(RBP8). . 24 14.6.5Reserved(RBP10). 24 14.6.6FileType(RBP11) . 24ISO/IE

15、C133464:1999(E) ISO/IEC vi 14.6.7ParentICBLocation(RBP12) 25 14.6.8Flags(RBP18) 25 14.7IndirectEntry .27 14.7.1DescriptorTag(BP0) . .27 14.7.2ICBTag(BP16). .27 14.7.3IndirectICB(BP36) .27 14.8TerminalEntry .27 14.8.1DescriptorTag(BP0) . .27 14.8.2ICBTag(BP16). .27 14.9FileEntry 27 14.9.1DescriptorTa

16、g(BP0) . .28 14.9.2ICBTag(BP16). .28 14.9.3Uid(BP36). .28 14.9.4Gid(BP40). .28 14.9.5Permissions(BP44) . .28 14.9.6FileLinkCount(BP48) . 30 14.9.7RecordFormat(BP50). .30 14.9.8RecordDisplayAttributes(BP51) . 30 14.9.9RecordLength(BP52) . .31 14.9.10InformationLength(BP56). 31 14.9.11LogicalBlocksRec

17、orded(BP64) 31 14.9.12AccessDateandTime(BP72) . 31 14.9.13ModificationDateandTime(BP84). 31 14.9.14AttributeDateandTime(BP96) .32 14.9.15Checkpoint(BP108) 32 14.9.16ExtendedAttributeICB(BP112) 32 14.9.17ImplementationIdentifier(BP128). 32 14.9.18UniqueId(BP160) . 32 14.9.19LengthofExtendedAttributes

18、(=L_EA)(BP168). 32 14.9.20LengthofAllocationDescriptors(=L_AD)(BP172) .32ISO/IEC ISO/IEC133464:1999(E) vii 14.9.21ExtendedAttributes(BP176) . 32 14.9.22AllocationDescriptors(BPL_EA+176) . 32 14.10ExtendedAttributes 32 14.10.1ExtendedAttributeHeaderDescriptor . . 33 14.10.2Genericformat . 33 14.10.3C

19、haracterSetInformation . 34 14.10.4AlternatePermissions . 35 14.10.5FileTimesExtendedAttribute 38 14.10.6InformationTimesExtendedAttribute . . 39 14.10.7DeviceSpecification. . 40 14.10.8ImplementationUseExtendedAttribute . 41 14.10.9ApplicationUseExtendedAttribute . . 42 14.11UnallocatedSpaceEntry 4

20、3 14.11.1DescriptorTag(BP0) 43 14.11.2ICBTag(BP16) 43 14.11.3LengthofAllocationDescriptors(=L_AD)(BP36) . . 43 14.11.4AllocationDescriptors(BP40). 43 14.12SpaceBitmapDescriptor . 44 14.12.1DescriptorTag(BP0) 44 14.12.2NumberofBits(=N_BT)(BP16). 44 14.12.3NumberofBytes(=N_B)(BP20). . 44 14.12.4Bitmap

21、(BP24) . 44 14.13PartitionIntegrityEntry 44 14.13.1DescriptorTag(BP0) 44 14.13.2ICBTag(BP16) 45 14.13.3RecordingDateandTime(BP36) 45 14.13.4IntegrityType(BP48). . 45 14.13.5Reserved(BP49) . 45 14.13.6ImplementationIdentifier(BP224) . . 45 14.13.7ImplementationUse(BP256) . 45ISO/IEC133464:1999(E) ISO

22、/IEC viii 14.14Allocationdescriptors. .45 14.14.1ShortAllocationDescriptor 45 14.14.2LongAllocationDescriptor. 46 14.14.3ExtendedAllocationDescriptor . 46 14.15LogicalVolumeHeaderDescriptor . 47 14.15.1UniqueId(RBP0) .47 14.15.2Reserved(RBP8). 48 14.16Pathname. 48 14.16.1PathComponent . .48 14.17Ext

23、endedFileEntry 49 14.17.1DescriptorTag(BP0) 49 14.17.2ICBTag(BP16) 50 14.17.3Uid(BP36) 50 14.17.4Gid(BP40) 50 14.17.5Permissions(BP44) 50 14.17.6FileLinkCount(BP48) .50 14.17.7RecordFormat(BP50) 50 14.17.8RecordDisplayAttributes(BP51) .50 14.17.9RecordLength(BP52) 50 14.17.10InformationLength(BP56)

24、.50 14.17.11ObjectSize(BP64) . .50 14.17.12LogicalBlocksRecorded(BP72) . .50 14.17.13AccessDateandTime(BP80) .50 14.17.14ModificationDateandTime(BP92) .50 14.17.15CreationDateandTime(BP104) . 50 14.17.16AttributeDateandTime(BP116) .51 14.17.17Checkpoint(BP128). .51 14.17.18ExtendedAttributeICB(BP136

25、) . .51 14.17.19StreamDirectoryICB(BP152) . 51 14.17.20ImplementationIdentifier(BP168) .51ISO/IEC ISO/IEC133464:1999(E) ix 14.17.21UniqueId(BP200) . 51 14.17.22LengthofExtendedAttributes(=L_EA)(BP208) . 51 14.17.23LengthofAllocationDescriptors(=L_AD)(BP212) . . 51 14.17.24ExtendedAttributes(BP216) .

26、 51 14.17.25AllocationDescriptors(BPL_EA+216) . 51 15Levelsofmediuminterchange . 51 15.1Level1. . 51 15.2Level2. . 52 15.3Level3. . 52 16Requirementsforthedescriptionofsystems . . 53 17Requirementsforanoriginatingsystem . 53 17.1General . . 53 17.2Mandatoryaccessbyuser . 53 17.2.1Files. 53 17.2.2Fil

27、eset 53 17.2.3Descriptors. 53 17.3Optionalaccessbyuser . . 54 17.3.1Records . . 55 17.3.2Filetypes 55 17.3.3Permissions . 55 17.4Restrictions . 55 17.4.1Multivolumevolumesets. . 55 17.4.2Recordlength. 55 17.4.3FileTimes . 55 17.4.4InformationTimes. . 55 17.4.5AlternatePermissions. 55 18Requirementsf

28、orareceivingsystem. . 56 18.1General . . 56 18.2Files. . 56 18.2.1Filetypes 56ISO/IEC133464:1999(E) ISO/IEC x 18.2.2Permissions. .56 18.3Mandatoryaccessbyuser .56 18.3.1Descriptors. 56 18.4Restrictions .57 18.4.1Recordlength. 57 18.4.2FileTimes .57 18.4.3InformationTimes. .57 18.4.4AlternatePermissi

29、ons. 57 AnnexA (normative) ICBStrategies . 58 AnnexB (informative)ChangesfromISO/IEC133464:1995tothissecondedition62ISO/IEC ISO/IEC133464:1999(E) xi Foreword ISO(theInternationalOrganizationforStandardization)andIEC(theInternationalElectrotechnicalCommission) formthespecialisedsystemforworldwidestan

30、dardisation.NationalBodiesthataremembersofISOorIEC participateinthedevelopmentofInternationalStandardsthroughtechnicalcommitteesestablishedbythe respectiveorganisationtodealwithparticularfieldsoftechnicalactivity.ISOandIECtechnicalcommittees collaborateinfieldsofmutualinterest.Otherinternationalorga

31、nisations,governmentalandnongovernmental,in liaisonwithISOandIEC,alsotakepartinthiswork. Inthefieldofinformationtechnology,ISOandIEChaveestablishedaJointTechnicalCommittee,ISO/IECJTC1. DraftInternationalStandardsadoptedbytheJointTechnicalCommitteearecirculatedtoNationalBodiesforvoting. Publicationof

32、anInternationalStandardrequiresapprovalbyatleast75%ofthenationalbodiescastingavote. InternationalStandardISO/IEC133464waspreparedbyECMA,(asStandardECMA167)andwasadopted, underaspecial“fasttrackprocedure”,byJointTechnicalCommitteeISO/IECJTC1, Informationtechnology,in parallelwithitsapprovalbyNational

33、BodiesofISOandIEC. Thissecondeditioncancelsandreplacesthefirstedition(ISO/IEC133464:1995),whichhasbeentechnically revised. ISO/IEC13346consistsofthefollowingparts,underthegeneraltitle InformationtechnologyVolumeandfile structureofwriteonceandrewritablemediausingnonsequentialrecordingforinformationin

34、terchange : Part1:General Part2:Volumeandbootblockrecognition Part3:Volumestructure Part4:Filestructure Part5:Recordstructure AnnexAformsanintegralpartofthispartofISO/IEC13346.AnnexBisforinformationonly.ISO/IEC133464:1999(E) ISO/IEC xii Introduction ISO/IEC13346isavolumeandfilestructurestandardforin

35、terchangingfilesandassuch,itisapeertoexisting volumeandfilestructurestandardssuchasISO9293andISO9660.Itisratherdifferentfromthosestandardsinat leasttwoimportantways.Firstly,itoffersmuchmorefunctionality,mainlybecauseofuserneedsforincreased charactersetsupportandformorepowerfulfilesystemfeatures.Seco

36、ndly,itacknowledgestheseparateconcerns ofbooting,volumestructureandfilesystemstructure.Ratherthanbundlingthesedifferentfunctionstogether, ISO/IEC13346carefullysegregatesthesefunctionsintoseparatepartsanddescribesindetailhowthosepartsfit together.Itisexpectedthatfuturevolumeandfilestructurestandardsw

37、illfitintothisframework,ratherthanbuilding otherdistinctandincompatibleformats. ISO/IEC13346ispublishedinfiveParts.Part1generalspecifiesreferences,definitions,notationsandbasic structuresusedintheotherfourParts.Part2volumeandbootblockrecognitionspecifiesformatsandsystem requirementsforrecognisingthe

38、volumestructuresonamediumandbootingfromamedium.Part3volume structurespecifieshowtorecordvariousvolumerelatedentitiessuchasvolumes,volumesetsandlogical volumes.Part4filestructurespecifieshowtorecordandinterpretfiles,bothfiledataandfileattributes,andfile hierarchieswithinlogicalvolumes.Part5recordstru

39、cturespecifieshowtorecordandinterpretfiledataencoded asrecords.INTERNATIONALSTANDARD ISO/IEC ISO/IEC133464:1999(E) 1 InformationtechnologyVolumeandfilestructureofwriteonceand rewritablemediausingnonsequentialrecordingforinformation interchange Part4: Filestructure 1Scope ISO/IEC13346specifiesaformat

40、andassociatedsystemrequirementsforvolumeandbootblockrecognition, volumestructure,filestructureandrecordstructurefortheinterchangeofinformationonmediabetweenusersof informationprocessingsystems. Themediashallberecordedasiftherecordingofsectorsmaybedoneinanyorder. Note1Themediumisnotrestrictedtobeingo

41、fonlyonetype;thetypeofmediummaybeeitherwriteonce,orreadonly,or rewritable,ora combinationofthesetypes. ThisInternationalStandardconsistsofthefollowingfiveParts: Part1:General Part2:VolumeandBootBlockRecognition Part3:VolumeStructure Part4:FileStructure Part5:RecordStructure AnnexAICBStrategies,ispar

42、tofthispartofISO/IEC13346. ThispartofISO/IEC13346specifiesaformatandassociatedsystemrequirementsforfilestructurebyspecifying: - theplacementoffiles; - theattributesofthefiles; - therelationshipamongfilesofalogicalvolume; - levelsofmediuminterchange; - requirementsfortheprocesseswhichareprovidedwithi

43、ninformationprocessingsystems,toenableinformation tobeinterchangedbetweendifferentsystems;forthispurpose,itspecifiesthefunctionstobeprovidedwithin systemswhichareintendedtooriginateorreceivemediawhichconformtothispartofISO/IEC13346. 2Parts references ThefirstdigitofareferencewithinISO/IEC13346identifiesthePart,e.g.2/5referstoclause5inISO/IEC133462, andfigure4/3referstofigure3inthispartofISO/IEC13346.ISO/IEC133464:1999(E) ISO/IEC 2 3Part interface ThisclausespecifiestheinterfaceofthispartofISO/IEC13346tootherstandardsorParts. 3.1Input ThispartofISO/IEC13346