1、BC Referencenumber ISO/IEC133463:1999(E) INTERNATIONAL STANDARD ISO/IEC 133463 Secondedition 19990601 InformationtechnologyVolumeandfile structureofwriteonceandrewritable mediausingnonsequentialrecordingfor informationinterchange Part3: Volumestructure TechnologiesdelinformationStructuredevolumeetde
2、fichierde moyensdcritureuniqueetdercritureutilisantunenregistrementnon squentielpourlchangedinformation Partie3:StructuredevolumeISO/IEC133463:1999(E) ISO/IEC1999 Allrightsreserved.Unlessotherwisespecified,nopartofthispublicationmaybereproducedorutilizedinanyformorbyan ymeans,electronic ormechanical
3、,includingphotocopyingandmicrofilm,withoutpermissioninwritingfromthepublisher. ISO/IECCopyrightOffice Casepostale56 CH1211Genve20 Switzerland PrintedinSwitzerland ii Contents 1Scope 1 2Partsreferences. 1 3Partinterface. .2 3.1Input .2 3.2Output . .2 4Conformance 2 4.1Conformanceofamedium 2 4.2Confor
4、manceofaninformationprocessingsystem 3 5Definitions 3 5.1Anchorpoint. .3 5.2CyclicRedundancyCheck(CRC) 3 5.3Extent. 3 5.4Logicalblock .3 5.5Logicalsector. .3 5.6Logicalvolume. .3 5.7Partition .3 6Notation . .3 7Basictypes .3 7.1ExtentDescriptor 3 7.1.1ExtentLength(RBP0) .4ISO/IEC ISO/IEC133463:1999(
5、E) iii 7.1.2ExtentLocation(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). . 5 7.2.7DescriptorCRCLength(RBP10). 6 7.2.8TagLocation(RBP12) 6 8Volumest
6、ructure . 6 8.1Arrangementofinformationonavolume. . 6 8.1.1Sectornumbers . 6 8.1.2Logicalsector . . 6 8.2Volumespace. . 6 8.3Volumedescriptors . . 7 8.4VolumeDescriptorSequence. . 7 8.4.1ContentsofaVolumeDescriptorSequence. 7 8.4.2RecordingoftheVolumeDescriptorSequence . 7 8.4.3Prevailingdescriptors
7、 . 8 8.4.4Recordingofdescriptors. . 9 8.5Allocationofthevolumespace. 9 8.6Volumeset. 9 8.7Partition . 10 8.8Logicalvolume. . 10 8.8.1Logicalblocks. . 10 8.8.2Logicalvolumeintegrity . 10 9Volumerecognitionstructures . 11 9.1NSRDescriptor . 11 9.1.1StructureType(BP0) 11ISO/IEC133463:1999(E) ISO/IEC iv
8、 9.1.2StandardIdentifier(BP1). .11 9.1.3StructureVersion(BP6) . 11 9.1.4Reserved(BP7) .11 9.1.5StructureData(BP8) .11 10Volumedatastructures .12 10.1PrimaryVolumeDescriptor. .12 10.1.1DescriptorTag(BP0) . .12 10.1.2VolumeDescriptorSequenceNumber(BP16). 12 10.1.3PrimaryVolumeDescriptorNumber(BP20) 12
9、 10.1.4VolumeIdentifier(BP24) . .13 10.1.5VolumeSequenceNumber(BP56) 13 10.1.6MaximumVolumeSequenceNumber(BP58) 13 10.1.7InterchangeLevel(BP60). 13 10.1.8MaximumInterchangeLevel(BP62) . 13 10.1.9CharacterSetList(BP64) .13 10.1.10MaximumCharacterSetList(BP68) . 13 10.1.11VolumeSetIdentifier(BP72) 13
10、10.1.12DescriptorCharacterSet(BP200) .13 10.1.13ExplanatoryCharacterSet(BP264). 13 10.1.14VolumeAbstract(BP328). 14 10.1.15VolumeCopyrightNotice(BP336) . .14 10.1.16ApplicationIdentifier(BP344) 14 10.1.17RecordingDateandTime(BP376) . .14 10.1.18ImplementationIdentifier(BP388). 14 10.1.19Implementati
11、onUse(BP420) .14 10.1.20PredecessorVolumeDescriptorSequenceLocation(BP484). 14 10.1.21Flags(BP488) . .14 10.1.22Reserved(BP490) .15 10.2AnchorVolumeDescriptorPointer .15 10.2.1DescriptorTag(BP0) . .15ISO/IEC ISO/IEC133463:1999(E) v 10.2.2MainVolumeDescriptorSequenceExtent(BP16) 15 10.2.3ReserveVolum
12、eDescriptorSequenceExtent(BP24) . . 15 10.2.4Reserved(BP32) . 15 10.3VolumeDescriptorPointer . . 15 10.3.1DescriptorTag(BP0). . 16 10.3.2VolumeDescriptorSequenceNumber(BP16). 16 10.3.3NextVolumeDescriptorSequenceExtent(BP20) 16 10.3.4Reserved(BP28) . 16 10.4ImplementationUseVolumeDescriptor 16 10.4.
13、1DescriptorTag(BP0). . 16 10.4.2VolumeDescriptorSequenceNumber(BP16). 16 10.4.3ImplementationIdentifier(BP20) . . 17 10.4.4ImplementationUse(BP52) . 17 10.5PartitionDescriptor 17 10.5.1DescriptorTag(BP0). . 17 10.5.2VolumeDescriptorSequenceNumber(BP16). 17 10.5.3PartitionFlags(BP20) . . 17 10.5.4Par
14、titionNumber(BP22) 18 10.5.5PartitionContents(BP24) 18 10.5.6PartitionContentsUse(BP56) . 18 10.5.7AccessType(BP184) . 18 10.5.8PartitionStartingLocation(BP188) 18 10.5.9PartitionLength(BP192). . 19 10.5.10ImplementationIdentifier(BP196) . . 19 10.5.11ImplementationUse(BP228) . 19 10.5.12Reserved(BP
15、356) . 19 10.6LogicalVolumeDescriptor . . 19 10.6.1DescriptorTag(BP0). . 19 10.6.2VolumeDescriptorSequenceNumber(BP16). 19 10.6.3DescriptorCharacterSet(BP20) . 19ISO/IEC133463:1999(E) ISO/IEC vi 10.6.4LogicalVolumeIdentifier(BP84). 20 10.6.5LogicalBlockSize(BP212). .20 10.6.6DomainIdentifier(BP216)
16、20 10.6.7LogicalVolumeContentsUse(BP248) .20 10.6.8MapTableLength(=MT_L)(BP264). .20 10.6.9NumberofPartitionMaps(=N_PM)(BP268) . .20 10.6.10ImplementationIdentifier(BP272). 20 10.6.11ImplementationUse(BP304) .20 10.6.12IntegritySequenceExtent(BP432) . 20 10.6.13PartitionMaps(BP440) .20 10.7Partition
17、maps .21 10.7.1Genericpartitionmap. .21 10.7.2Type1PartitionMap 21 10.7.3Type2PartitionMap 22 10.8UnallocatedSpaceDescriptor .22 10.8.1DescriptorTag(BP0) . .23 10.8.2VolumeDescriptorSequenceNumber(BP16). 23 10.8.3NumberofAllocationDescriptors(=N_AD)(BP20) .23 10.8.4AllocationDescriptors(BP24) .23 10
18、.9TerminatingDescriptor 23 10.9.1DescriptorTag(BP0) . .23 10.9.2Reserved(BP16) .23 10.10LogicalVolumeIntegrityDescriptor .23 10.10.1DescriptorTag(BP0) 24 10.10.2RecordingDateandTime(BP16) 24 10.10.3IntegrityType(BP28). .24 10.10.4NextIntegrityExtent(BP32) 24 10.10.5LogicalVolumeContentsUse(BP40) .24
19、 10.10.6NumberofPartitions(=N_P)(BP72) .24 10.10.7LengthofImplementationUse(=L_IU)(BP76) . .25ISO/IEC ISO/IEC133463:1999(E) vii 10.10.8FreeSpaceTable(BP80). . 25 10.10.9SizeTable(BPN_P 4+80). 25 10.10.10ImplementationUse(BPN_P 8+80) 25 11Levelsofmediuminterchange . 25 11.1Level1. . 25 11.2Level2. .
20、26 11.3Level3. . 26 12Requirementsforthedescriptionofsystems . . 26 13Requirementsforanoriginatingsystem . 26 13.1General . . 26 13.2Mandatoryaccessbyuser . 26 13.2.1Descriptors. 26 13.3Optionalaccessbyuser . . 27 13.3.1Descriptors. 27 13.3.2Multivolumevolumesets. . 27 14Requirementsforareceivingsys
21、tem. . 28 14.1General . . 28 14.2Mandatoryaccessbyuser . 28 14.2.1Descriptors. 28 AnnexA (informative) ChangesfromISO/IEC133463:1995tothissecondedition. 29ISO/IEC133463:1999(E) ISO/IEC viii Foreword ISO(theInternationalOrganizationforStandardization)andIEC(theInternationalElectrotechnicalCommission)
22、 formthespecialisedsystemforworldwidestandardisation.NationalBodiesthataremembersofISOorIEC participateinthedevelopmentofInternationalStandardsthroughtechnicalcommitteesestablishedbythe respectiveorganisationtodealwithparticularfieldsoftechnicalactivity.ISOandIECtechnicalcommittees collaborateinfiel
23、dsofmutualinterest.Otherinternationalorganisations,governmentalandnongovernmental,in liaisonwithISOandIEC,alsotakepartinthiswork. Inthefieldofinformationtechnology,ISOandIEChaveestablishedaJointTechnicalCommittee,ISO/IECJTC1. DraftInternationalStandardsadoptedbytheJointTechnicalCommitteearecirculate
24、dtoNationalBodiesforvoting. PublicationofanInternationalStandardrequiresapprovalbyatleast75%ofthenationalbodiescastingavote. InternationalStandardISO/IEC133463waspreparedbyECMA,(asStandardECMA167)andwasadopted, underaspecial“fasttrackprocedure”,byJointTechnicalCommitteeISO/IECJTC1, Informationtechno
25、logy,in parallelwithitsapprovalbyNationalBodiesofISOandIEC. Thissecondeditioncancelsandreplacesthefirstedition(ISO/IEC133463:1995),whichhasbeentechnically revised. ISO/IEC13346consistsofthefollowingparts,underthegeneraltitle InformationtechnologyVolumeandfile structureofwriteonceandrewritablemediaus
26、ingnonsequentialrecordingforinformationinterchange : Part1:General Part2:Volumeandbootblockrecognition Part3:Volumestructure Part4:Filestructure Part5:Recordstructure AnnexAofthispartofISO/IEC13346isforinformationonly.ISO/IEC ISO/IEC133463:1999(E) ix Introduction ISO/IEC13346isavolumeandfilestructur
27、estandardforinterchangingfilesandassuch,itisapeertoexisting volumeandfilestructurestandardssuchasISO9293andISO9660.Itisratherdifferentfromthosestandardsinat leasttwoimportantways.Firstly,itoffersmuchmorefunctionality,mainlybecauseofuserneedsforincreased charactersetsupportandformorepowerfulfilesyste
28、mfeatures.Secondly,itacknowledgestheseparateconcerns ofbooting,volumestructureandfilesystemstructure.Ratherthanbundlingthesedifferentfunctionstogether, ISO/IEC13346carefullysegregatesthesefunctionsintoseparatepartsanddescribesindetailhowthosepartsfit together.Itisexpectedthatfuturevolumeandfilestruc
29、turestandardswillfitintothisframework,ratherthanbuilding otherdistinctandincompatibleformats. ISO/IEC13346ispublishedinfiveParts.Part1generalspecifiesreferences,definitions,notationsandbasic structuresusedintheotherfourParts.Part2volumeandbootblockrecognitionspecifiesformatsandsystem requirementsfor
30、recognisingthevolumestructuresonamediumandbootingfromamedium.Part3volume structurespecifieshowtorecordvariousvolumerelatedentitiessuchasvolumes,volumesetsandlogical volumes.Part4filestructurespecifieshowtorecordandinterpretfiles,bothfiledataandfileattributes,andfile hierarchieswithinlogicalvolumes.P
31、art5recordstructurespecifieshowtorecordandinterpretfiledataencoded asrecords.INTERNATIONALSTANDARD ISO/IEC ISO/IEC133463:1999(E) 1 InformationtechnologyVolumeandfilestructureofwriteonce andrewritablemediausingnonsequentialrecordingfor informationinterchange Part3: Volumestructure 1Scope ISO/IEC13346
32、specifiesaformatandassociatedsystemrequirementsforvolumeandbootblockrecognition, volumestructure,filestructureandrecordstructurefortheinterchangeofinformationonmediabetweenusersof informationprocessingsystems. Themediashallberecordedasiftherecordingofsectorsmaybedoneinanyorder. Note1Themediumisnotre
33、strictedtobeingofonlyonetype;thetypeofmediummaybeeitherwriteonce,orreadonly,or rewritable,oracombinationofthesetypes. ISO/IEC13346consistsofthefollowingfiveParts: Part1:General Part2:VolumeandBootBlockRecognition Part3:VolumeStructure Part4:FileStructure Part5:RecordStructure AnnexAICBStrategies,isp
34、artofISO/IEC133464. ThispartofISO/IEC 13346specifiesaformatandassociatedsystemrequirementsforvolumestructureby specifying: theattributesofavolumeandthedescriptorsrecordedonit; therelationshipamongvolumesofavolumeset; theattributesofapartitionofavolume; theattributesofalogicalvolumeandthedescriptorsr
35、ecordedonit; levelsofmediuminterchange; requirementsfortheprocesseswhichareprovidedwithininformationprocessingsystems,toenable informationtobeinterchangedbetweendifferentsystems;forthispurpose,itspecifiesthefunctionstobe providedwithinsystemswhichareintendedtooriginateorreceivemediawhichconformtothi
36、spartof ISO/IEC13346. 2Parts references ThefirstdigitofareferencewithinISO/IEC13346identifiesthePart,e.g.2/5referstoclause5inISO/IEC133462, andfigure4/3referstofigure3inISO/IEC133464.ISO/IEC133463:1999(E) ISO/IEC 2 3Part interface ThisclausespecifiestheinterfaceofthispartofISO/IEC13346tootherstandar
37、dsorParts. 3.1Input ThispartofISO/IEC13346requiresthespecificationofthefollowingbyanotherstandardorPart. Astandardforrecording(see1/5.10). Thesizeofalogicalsector(see3/8.1.2)ofavolume. IfthevolumeisrecordedaccordingtoISO/IEC 133462,avolumerecognitionsequencespecifiedby ISO/IEC133462shallcontainthede
38、scriptordescribedin3/9.1recordedatleastonce. IfthevolumeisrecordedaccordingtoISO/IEC133462,thevolumerecognitionspace(see2/8.2)shallbethe entirevolume. IfthevolumeisrecordedaccordingtoISO/IEC133462,theinitialsectorinthevolume(see2/3.1)shallbethe firstsectorofthevolume. InformationtoberecordedinthePar
39、titionContentsUsefieldofaPartitionDescriptor(see3/10.5.6). InformationtoberecordedintheLogicalVolumeContentsUsefieldofaLogicalVolumeDescriptor(see 3/10.6.7). 3.2Output ThispartofISO/IEC13346specifiesthefollowingwhichmaybeusedbyotherstandardsorParts. Volumesetsofoneormorevolumes(see3/8.6). Avolumespa
40、ceforavolume(see3/8.2). Logicalsectorsofafixedsizeforavolume(see3/8.1.2). Partitions(see3/8.7). Logicalvolumescomposedofpartitions(see3/8.8). Numericidentificationofthepartitionswithinalogicalvolume(see3/8.8). Logicalblocksofafixedsizeforalogicalvolume. Thelogicalblocksizeforalogicalvolume. Attribut
41、esofavolume. Attributesofalogicalvolume. Attributesofapartition. AnindicationthatavolumemayhavebeenrecordedtothispartofISO/IEC13346(see3/9.1). 4Conformance 4.1 Conformanceofamedium AmediumshallbeinconformancewithISO/IEC13346whenitconformstoastandardforrecording(see1/5.10) andinformationrecordedonsec
42、torsofthemediumconformtothespecificationsofISO/IEC133461andoneor moreofISO/IEC133462,3,4and5.Astatementofconformanceshallidentifythesectorsofthemediumon whichinformationisrecordedaccordingtothespecificationsofISO/IEC13346,andthePartsandthelevelsof mediuminterchange(see1/10,3/11,and4/15)towhichthecon
43、tentsofthosesectorsofthemediumconform.ISO/IEC ISO/IEC133463:1999(E) 3 4.2 Conformanceofaninformationprocessingsystem AninformationprocessingsystemshallbeinconformancewithISO/IEC 13346ifitmeetstherequirements specifiedinISO/IEC133461andoneormoreofISO/IEC133462,3,4and5eitherforanoriginatingsystem (see2/13,3/13,4/17and5/11)orforareceivingsystem(see2/13,3/14,4/18and5/12)orforbothtypeso
