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Description DCN Updated in UDF Revision Minimum UDF Read Revision Minimum UDF Write Revision FID File Identifier length and Unicode uniqueness 5049 2.50 1.02 2.01 Disallow overlapping partitions 5061 2.50 1.02 1.02 Strategy 4096 only for WORM media 5062 2.50 1.02 1.02 UDF Unique ID Mapping Data 5063 2.50 2.50 2.50 Extended Attribute block alignment 5064 2.50 1.02 1.02 UDF Defined Named Streams section 5065 2.50 2.00 2.00 File Identifier translation code repair 5066 2.50 1.02 1.02 Correction of is_fileset_soft_protected rule 5069 2.50 2.00 2.00 Disallow hard linked directories 5070 2.50 1.02 2.50 Requirements for DVD-RAM/RW/R interchangeability 5071 2.50 2.00 2.00 Unique ID for System Stream Directory 5072 2.50 2.50 2.50 Shared description for some LVID and VAT fields 5074 2.50 2.01 2.01 Recommendations for Mount Rainier formatted media 5075 2.50 1.02 1.02 Recommendations for DVD+R and DVD+RW 5076 2.50 1.50 1.50 Section 3.3.6 put out of order 5077 2.50 2.00 2.00 UDF UniqueID clarifications 5078 2.50 2.00 2.00 Clarify partition Access Type 3 and 4 5079 2.50 2.01 2.01 Icbtag Parent ICB Location issue 5081 2.50 1.02 2.50 Clarification of Volume Recognition Sequence 5082 2.50 1.02 2.01 Metadata Partition Map 5086 2.50 2.50 2.50 Partition Alignment & ECC Block Size Definition 5089 2.50 1.02 2.50 Non-allocatable space stream usage clarifications 5090 2.50 1.50 1.50 UDF 2.01 159 March50 April
6.136.16 Developer Registration Form Any developer that plans on implementing ECMA 167 according to this document should complete the developer registration form on the following page. By becoming a registered OSTA developer you receive the following benefits: • You will receive a list of the current OSTA registered developers and their associated Implementation Identifiers.Developer IDs. The developers on this list are encouraged to interchange media to verify data interchange among implementations. • Notification of OSTA Technical Committee meetings. You may attend a limited number of these meetings without becoming an official OSTA member. • You can be added to the OSTA UDF email reflector. This reflector provides you the opportunity to post technical questions on the OSTA Universal Disk Format Specification. • You will receive an invitation to participate in the development of the next revision of this document. For the latest information on OSTA and UDF visit the OSTA web site at, see POINTS OF CONTACT on the following address:first page of this document. http://www.osta.org UDF 2.01 160 March50 April
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Universal Disk Format ® Specificat
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REVISION HISTORY 1.00 October 24, 1
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CONTENTS 1. INTRODUCTION ..........
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6.4 OSTA Compressed Unicode Algorit
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1. Introduction The OSTA Universal
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1.2 Compliance This document requir
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Media Block Address NOTE 1: This is
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1.3.3 Terms May Optional Shall Shou
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non-overlapping Partitions with 2 p
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2.1 Part 1 - General 2.1.1 Characte
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length of the field. The characters
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2.1.5.2 char Identifier[23] Unless
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The Suffix Type column in the above
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For an Application Entity Identifie
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2.2 Part 3 - Volume Structure 2.2.1
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NOTE: This field is used to determi
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2.2.4 Logical Volume Descriptor str
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2.2.5 Unallocated Space Descriptor
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EntityID. The scope of this EntityI
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2.2.7.2.2 dstring LogicalVolumeIden
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Layout of Type 2 partition map for
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• Bits 1-7: Reserved. Shall be se
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Virtual Allocation Table structure
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the offset and length of a partitio
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The Metadata Partition Map (see2.2.
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2.2.13.1 Metadata File (and Metadat
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2.2.13.4 Procedure for de-allocatin
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} struct EntityID byte byte Impleme
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2.3.2 File Set Descriptor struct Fi
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2.3.2.7 struct EntityID DomainIdent
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In order to assist a UDF implementa
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2.3.5.1 Uint16 StrategyType The co
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2.3.6 File Entry struct FileEntry {
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2.3.6.8 FileLinkCount Hard links to
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Descriptors should be used. For exa
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2.3.11.2 Uint32 PreviousAllocationE
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3.2 Part 3 - Volume Structure 3.2.1
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3.3 Part 4 - File System 3.3.1 File
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3.3.2.1.2 Macintosh Bits 6 & 7 (Set
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3.3.3 File Entry struct FileEntry {
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would be considered writable if the
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3.3.3.5 byte Extended Attributes Se
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ignored and the file creation time
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3.3.4.5.1.1 FreeEASpace This extend
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MacVolumeInfo format RBP Length Nam
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UDFFXInfo format (Volume IV, page 1
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The ApplicationUse area for this ex
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stream directory. If present, there
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Since the streams listed above have
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Object Logical Block Number is the
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mechanism for the host software to
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Vendor ID - The Vendor ID reported
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The OS2EA Stream contains a table o
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4.2.2 File Identifier Descriptor st
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Definitions: A FileIdentifier shall
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3. Invalid Characters: A FileIdenti
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4. Trailing Periods and Spaces: All
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If there is a file extension then t
Page 118 and 119: defined as space that is not direct
Page 120 and 121: UDF 2.01 111 March50 April
Page 122 and 123: 6.2 UDF Entity Identifier Values En
Page 124 and 125: 8 0 BeOS - generic 9 0 Windows CE -
Page 126 and 127: } } returnValue = unicodeIndex; } r
Page 128 and 129: } return crc; #ifdef MAIN unsigned
Page 130 and 131: 6.6 Algorithm for Strategy Type 409
Page 132 and 133: nameLen = udfNameLen; } else { /* A
Page 134 and 135: } needsCRC = TRUE; /* Append the CR
Page 136 and 137: if (index < udfLabelLen || index ==
Page 138 and 139: UDF 2.01 129 March50 April
Page 140 and 141: unicode_t *udfName, /* (Input) Name
Page 142 and 143: } #ifdef (OS2 | WIN_95 | WIN_NT) /*
Page 144 and 145: 6.8 Extended Attribute Checksum Alg
Page 146 and 147: • The data of each file shall be
Page 148 and 149: Read the File Identifier Descriptor
Page 150 and 151: • An intermediate state is allowe
Page 152 and 153: • The host shall perform read/mod
Page 154 and 155: 6.10.2.6.3 Level 3 No restrictions
Page 156 and 157: ISO 9660 converted to UDF 1 st sess
Page 158 and 159: For File Structure: 5. Unallocated
Page 160 and 161: 6.13 Recommendations for DVD+R and
Page 162 and 163: 6.13.1.4.2 Anchor Volume Descriptor
Page 164 and 165: 6.13.2.1 Requirements • The packe
Page 166 and 167: 6.126.15 UDF Media Format Revision
Page 170 and 171: Registration Form Disk Format Speci
Page 172 and 173: L Logical Block Size, 8, 9, 2425 Lo
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