ISO-13346-4-1999.pdf

B C Reference number ISO/IEC 13346-4:1999(E) INTERNATIONAL STANDARD ISO/IEC 13346-4 Second edition 1999-04-01 Information technology Volume and file structure of write-once and rewritable media using non-sequential recording for information interchange Part 4: File structure Technologies de l'information Structure de volume et de fichier de moyens d'écriture unique et de réécriture utilisant un enregistrement non séquentiel pour l'échange d'information Partie 4: Structure de fichier Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 22:02:43 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 13346-4:1999(E) © ISO/IEC 1999 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. ISO/IEC Copyright Office Case postale 56 CH-1211 Genève 20 Switzerland Printed in Switzerland ii Contents 1 Scope1 2 Parts references.1 3 Part interface2 3.1 Input.2 3.2 Output2 4 Conformance3 4.1 Conformance of a medium 3 4.2 Conformance of an information processing system 3 5 Definitions 3 5.1 Extent.3 5.2 File set3 5.3 Group ID.3 5.4 Logical block.3 5.5 Logical volume3 5.6 Partition .3 5.7 Stream3 5.8 User ID .3 6 Notation 3 7 Basic types.4 7.1 Recorded address.4 7.1.1 Logical Block Number (RBP 0).4 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 22:02:43 MDTNo reproduction or networking permitted without license from IHS -,-,- © ISO/IECISO/IEC 13346-4:1999(E) iii 7.1.2 Partition Reference Number (RBP 4).4 7.2 Descriptor Tag 4 7.2.1 Tag Identifier (RBP 0)4 7.2.2 Descriptor Version (RBP 2).5 7.2.3 Tag Checksum (RBP 4).5 7.2.4 Reserved (RBP 5).5 7.2.5 Tag Serial Number (RBP 6).5 7.2.6 Descriptor CRC (RBP 8)6 7.2.7 Descriptor CRC Length (RBP 10).6 7.2.8 Tag Location (RBP 12) 6 8 File structure6 8.1 Volume set.6 8.2 Arrangement of information on a volume set6 8.3 Arrangement of information on a logical volume6 8.3.1 File Set Descriptor Sequence.6 8.4 Arrangement of information on a partition7 8.5 File set .7 8.6 Directories.7 8.6.1 Order of directory descriptors8 8.6.2 Directory hierarchy size restrictions .9 8.7 Pathname.9 8.7.1 Resolved pathname.9 8.8 Files9 8.8.1 Attributes of a file10 8.8.2 Data space of a file10 8.8.3 Streams of a File11 8.9 Record structure.11 8.10 Information Control Block (ICB)11 8.10.1 ICB hierarchy .12 9 Additional File Data.12 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 22:02:43 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 13346-4:1999(E)© ISO/IEC iv 9.1 Extended attributes 12 9.2 Stream Directory.14 10 Partition space management14 10.1 Space sets.14 11 Partition integrity.15 12 Allocation descriptors.15 12.1 Description of Files.16 13 Recording of descriptors16 14 File Data Structures.16 14.1 File Set Descriptor16 14.1.1 Descriptor Tag (BP 0)17 14.1.2 Recording Date and Time (BP 16)17 14.1.3 Interchange Level (BP 28).17 14.1.4 Maximum Interchange Level (BP 30) .17 14.1.5 Character Set List (BP 32).17 14.1.6 Maximum Character Set List (BP 36).17 14.1.7 File Set Number (BP 40)18 14.1.8 File Set Descriptor Number (BP 44).18 14.1.9 Logical Volume Identifier Character Set (BP 48)18 14.1.10 Logical Volume Identifier (BP 112).18 14.1.11 File Set Character Set (BP 240) 18 14.1.12 File Set Identifier (BP 304).18 14.1.13 Copyright File Identifier (BP 336).18 14.1.14 Abstract File Identifier (BP 368) .18 14.1.15 Root Directory ICB (BP 400) .19 14.1.16 Domain Identifier (BP 416)19 14.1.17 Next Extent (BP 448)19 14.1.18 System Stream Directory (BP 464).19 14.1.19 Reserved (BP 480) .19 14.2 Terminating Descriptor 19 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 22:02:43 MDTNo reproduction or networking permitted without license from IHS -,-,- © ISO/IECISO/IEC 13346-4:1999(E) v 14.2.1 Descriptor Tag (BP 0)19 14.2.2 Reserved (BP 16) .19 14.3 Partition Header Descriptor.19 14.3.1 Unallocated Space Table (RBP 0) 20 14.3.2 Unallocated Space Bitmap (RBP 8)20 14.3.3 Partition Integrity Table (RBP 16).20 14.3.4 Freed Space Table (RBP 24).20 14.3.5 Freed Space Bitmap (RBP 32)20 14.3.6 Reserved (RBP 40).20 14.4 File Identifier Descriptor 20 14.4.1 Descriptor Tag (RBP 0) .21 14.4.2 File Version Number (RBP 16)21 14.4.3 File Characteristics (RBP 18)21 14.4.4 Length of File Identifier (=L_FI) (RBP 19)22 14.4.5 ICB (RBP 20).22 14.4.6 Length of Implementation Use (=L_IU) (RBP 36)22 14.4.7 Implementation Use (RBP 38).22 14.4.8 File Identifier (RBP L_IU+38)23 14.4.9 Padding (RBP L_FI+L_IU+38).23 14.5 Allocation Extent Descriptor .23 14.5.1 Descriptor Tag (BP 0)23 14.5.2 Previous Allocation Extent Location (BP 16)23 14.5.3 Length of Allocation Descriptors (=L_AD) (BP 20) 23 14.6 ICB Tag 23 14.6.1 Prior Recorded Number of Direct Entries (RBP 0) .24 14.6.2 Strategy Type (RBP 4).24 14.6.3 Strategy Parameter (RBP 6)24 14.6.4 Maximum Number of Entries (RBP 8)24 14.6.5 Reserved (RBP 10).24 14.6.6 File Type (RBP 11).24 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 22:02:43 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 13346-4:1999(E)© ISO/IEC vi 14.6.7 Parent ICB Location (RBP 12) 25 14.6.8 Flags (RBP 18)25 14.7 Indirect Entry.27 14.7.1 Descriptor Tag (BP 0)27 14.7.2 ICB Tag (BP 16)27 14.7.3 Indirect ICB (BP 36) .27 14.8 Terminal Entry.27 14.8.1 Descriptor Tag (BP 0)27 14.8.2 ICB Tag (BP 16)27 14.9 File Entry27 14.9.1 Descriptor Tag (BP 0)28 14.9.2 ICB Tag (BP 16)28 14.9.3 Uid (BP 36)28 14.9.4 Gid (BP 40)28 14.9.5 Permissions (BP 44)28 14.9.6 File Link Count (BP 48) .30 14.9.7 Record Format (BP 50)30 14.9.8 Record Display Attributes (BP 51) .30 14.9.9 Record Length (BP 52)31 14.9.10 Information Length (BP 56).31 14.9.11 Logical Blocks Recorded (BP 64) 31 14.9.12 Access Date and Time (BP 72) .31 14.9.13 Modification Date and Time (BP 84).31 14.9.14 Attribute Date and Time (BP 96).32 14.9.15 Checkpoint (BP 108)32 14.9.16 Extended Attribute ICB (BP 112)32 14.9.17 Implementation Identifier (BP 128).32 14.9.18 Unique Id (BP 160).32 14.9.19 Length of Extended Attributes (=L_EA) (BP 168).32 14.9.20 Length of Allocation Descriptors (=L_AD) (BP 172).32 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 22:02:43 MDTNo reproduction or networking permitted without license from IHS -,-,- © ISO/IECISO/IEC 13346-4:1999(E) vii 14.9.21 Extended Attributes (BP 176).32 14.9.22 Allocation Descriptors (BP L_EA+176).32 14.10 Extended Attributes32 14.10.1 Extended Attribute Header Descriptor 33 14.10.2 Generic format.33 14.10.3 Character Set Information.34 14.10.4 Alternate Permissions.35 14.10.5 File Times Extended Attribute38 14.10.6 Information Times Extended Attribute39 14.10.7 Device Specification40 14.10.8 Implementation Use Extended Attribute.41 14.10.9 Application Use Extended Attribute 42 14.11 Unallocated Space Entry43 14.11.1 Descriptor Tag (BP 0)43 14.11.2 ICB Tag (BP 16)43 14.11.3 Length of Allocation Descriptors (=L_AD) (BP 36) 43 14.11.4 Allocation Descriptors (BP 40).43 14.12 Space Bitmap Descriptor.44 14.12.1 Descriptor Tag (BP 0)44 14.12.2 Number of Bits (=N_BT) (BP 16).44 14.12.3 Number of Bytes (=N_B) (BP 20)44 14.12.4 Bitmap (BP 24).44 14.13 Partition Integrity Entry44 14.13.1 Descriptor Tag (BP 0)44 14.13.2 ICB Tag (BP 16)45 14.13.3 Recording Date and Time (BP 36)45 14.13.4 Integrity Type (BP 48)45 14.13.5 Reserved (BP 49) .45 14.13.6 Implementation Identifier (BP 224) 45 14.13.7 Implementation Use (BP 256).45 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 22:02:43 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 13346-4:1999(E)© ISO/IEC viii 14.14 Allocation descriptors45 14.14.1 Short Allocation Descriptor45 14.14.2 Long Allocation Descriptor.46 14.14.3 Extended Allocation Descriptor .46 14.15 Logical Volume Header Descriptor.47 14.15.1 Unique Id (RBP 0).47 14.15.2 Reserved (RBP 8).48 14.16 Pathname.48 14.16.1 Path Component48 14.17 Extended File Entry 49 14.17.1 Descriptor Tag (BP 0)49 14.17.2 ICB Tag (BP 16)50 14.17.3 Uid (BP 36)50 14.17.4 Gid (BP 40)50 14.17.5 Permissions (BP 44)50 14.17.6 File Link Count (BP 48) .50 14.17.7 Record Format (BP 50)50 14.17.8 Record Display Attributes (BP 51) .50 14.17.9 Record Length (BP 52)50 14.17.10 Information Length (BP 56).50 14.17.11 Object Size (BP 64)50 14.17.12 Logical Blocks Recorded (BP 72) 50 14.17.13 Access Date and Time (BP 80) .50 14.17.14 Modification Date and Time (BP 92).50 14.17.15 Creation Date and Time (BP 104) .50 14.17.16 Attribute Date and Time (BP 116).51 14.17.17 Checkpoint (BP 128)51 14.17.18 Extended Attribute ICB (BP 136)51 14.17.19 Stream Directory ICB (BP 152) .51 14.17.20 Implementation Identifier (BP 168).51 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 22:02:43 MDTNo reproduction or networking permitted without license from IHS -,-,- © ISO/IECISO/IEC 13346-4:1999(E) ix 14.17.21 Unique Id (BP 200).51 14.17.22 Length of Extended Attributes (=L_EA) (BP 208).51 14.17.23 Length of Allocation Descriptors (=L_AD) (BP 212) 51 14.17.24 Extended Attributes (BP 216).51 14.17.25 Allocation Descriptors (BP L_EA+216).51 15 Levels of medium interchange.51 15.1 Level 151 15.2 Level 252 15.3 Level 352 16 Requirements for the description of systems53 17 Requirements for an originating system.53 17.1 General 53 17.2 Mandatory access by user.53 17.2.1 Files.53 17.2.2 File set 53 17.2.3 Descriptors.53 17.3 Optional access by user 54 17.3.1 Records 55 17.3.2 File types 55 17.3.3 Permissions .55 17.4 Restrictions.55 17.4.1 Multivolume volume sets55 17.4.2 Record length.55 17.4.3 File Times .55 17.4.4 Information Times55 17.4.5 Alternate Permissions.55 18 Requirements for a receiving system56 18.1 General 56 18.2 Files56 18.2.1 File types 56 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 22:02:43 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 13346-4:1999(E)© ISO/IEC x 18.2.2 Permissions56 18.3 Mandatory access by user.56 18.3.1 Descriptors.56 18.4 Restrictions.57 18.4.1 Record length.57 18.4.2 File Times .57 18.4.3 Information Times57 18.4.4 Alternate Permissions.57 Annex A (normative) ICB Strategies .58 Annex B (informative) Changes from ISO/IEC 13346-4:1995 to this second edition62 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 22:02:43 MDTNo reproduction or networking permitted without license from IHS -,-,- © ISO/IECISO/IEC 13346-4:1999(E) xi Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialised system for worldwide standardisation. National Bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organisation to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organisations, governmental and non-governmental, in liaison with ISO and IEC, also take part in this work. In the field of information technology, ISO and IEC have established a Joint Technical Committee, ISO/IEC JTC 1. Draft International Standards adopted by the Joint Technical Committee are circulated to National Bodies for voting. Publication of an International Standard requires approval by at least 75% of the national bodies casting a vote. International Standard ISO/IEC 13346-4 was prepared by ECMA, (as Standard ECMA-167) and was adopted, under a special “fast-track procedure”, by Joint Technical Committee ISO/IEC JTC 1, Information technology, in parallel with its approval by National Bodies of ISO and IEC. This second edition cancels and replaces the first edition (ISO/IEC 13346-4:1995), which has been technically revised. ISO/IEC 13346 consists of the following parts, under the general title Information technology Volume and file structure of write-once and rewritable media using non-sequential recording for information interchange: Part 1: General Part 2: Volume and boot block recognition Part 3: Volume structure Part 4: File structure Part 5: Record structure Annex A forms an integral part of this part of ISO/IEC 13346. Annex B is for information only. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/04/2007 22:02:43 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 13346-4:1999(E)© ISO/IEC xii Introduction ISO/IEC 13346 is a volume and file structure standard for interchanging files and as such, it is a peer to existing volume and file structure standards such as ISO 9293 and ISO 9660. It is rather different from those standards in at least two important ways. Firstly, it offers much more functionality, mainly because of user needs for increased character set support and for more powerful file system features. Secondly, it acknowledges the separate concerns of booting, volume structure and file system structure. Rather than bundling these different functions together, ISO/IEC 13346 carefully segregates these functions into separate parts and describes in detail how those