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The OS2EA Stream contains a table of OS/2 Full EAs (FEA) as shown below. FEA format RBP Length Name Contents 0 1 Flags Uint8 1 1 Length of Name (=L_N) Uint8 2 2 Length of Value (=L_V) Uint16 4 L_N Name bytes 4+L_N L_V Value bytes For a complete description of Full EAs (FEA) please reference the following IBM document: “Installable File System for OS/2 Version 2.0” OS/2 File Systems Department PSPC Boca Raton, Florida February 17, 1992 3.3.8.3 Access Control Lists Certain operating systems support the concept of Access Control Lists (ACLs) for enforcing file access restrictions. In order to facilitate support for ACL’s UDF has defined a set of system level named streams, whose purpose is to store the ACL associated with a given file object. ACLs under UDF are stored as named streams, following the rules of section 3.3.5. The contents of the named stream ACL shall be opaque and are not defined by this document. Interpretation of the contents of the named ACL shall be left to the operating system for which the ACL is intended. The following names shall be used to identify the ACLs and shall be reserved. These names shall not be used for application named streams. “*UDF NT ACL” This name shall identify the named stream ACL for the Windows NT operating system. “*UDF UNIX ACL” This name shall identify the named stream ACL for the UNIX operating system. UDF 2.01 97 March50 April
4. User Interface Requirements 4.1 Part 3 – Volume Structure Part 3 of ECMA 167 contains various Identifiers which, depending upon the implementation, may have to be presented to the user. • VolumeIdentifier • VolumeSetIdentifier • LogicalVolumeID These identifiers, which are stored in CS0, may have to go through some form of translation to be displayable to the user. T<strong>here</strong>fore when an implementation must perform an OS specific translation on the above listed identifiers the implementation shall use the algorithms described in section 4.2.2.1. C source code for the translation algorithms may be found in the appendices of this document. 4.2 Part 4 – File System 4.2.1 ICB Tag struct icbtag { /* ECMA 167 4/14.6 */ Uint32 PriorRecordedNumberofDirectEntries; Uint16 StrategyType; byte StrategyParameter[2]; Uint16 MaximumNumberofEntries; byte Reserved; /* == #00 */ Uint8 FileType; Lb_addr ParentICBLocation; Uint16 Flags; } 4.2.1.1 FileType Any open/close/read/write requests for file(s) that have any of the following values in this field shall result in an Access Denied error condition under non- UNIX operating system environments: FileType values – 0 (Unknown), 6 (block device), 7 (character device), 9 (FIFO), and 10 (C_ISSOCK). Any open/close/read/write requests to a file of type 12 (SymbolicLink) shall access the file/directory to which the symbolic link is pointing. UDF 2.01 98 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
Page 56 and 57: } struct EntityID byte byte Impleme
Page 58 and 59: 2.3.2 File Set Descriptor struct Fi
Page 60 and 61: 2.3.2.7 struct EntityID DomainIdent
Page 62 and 63: In order to assist a UDF implementa
Page 64 and 65: 2.3.5.1 Uint16 StrategyType The co
Page 66 and 67: 2.3.6 File Entry struct FileEntry {
Page 68 and 69: 2.3.6.8 FileLinkCount Hard links to
Page 70 and 71: Descriptors should be used. For exa
Page 72 and 73: 2.3.11.2 Uint32 PreviousAllocationE
Page 74 and 75: 3.2 Part 3 - Volume Structure 3.2.1
Page 76 and 77: 3.3 Part 4 - File System 3.3.1 File
Page 78 and 79: 3.3.2.1.2 Macintosh Bits 6 & 7 (Set
Page 80 and 81: 3.3.3 File Entry struct FileEntry {
Page 82 and 83: would be considered writable if the
Page 84 and 85: 3.3.3.5 byte Extended Attributes Se
Page 86 and 87: ignored and the file creation time
Page 88 and 89: 3.3.4.5.1.1 FreeEASpace This extend
Page 90 and 91: MacVolumeInfo format RBP Length Nam
Page 92 and 93: UDFFXInfo format (Volume IV, page 1
Page 94 and 95: The ApplicationUse area for this ex
Page 96 and 97: stream directory. If present, there
Page 98 and 99: Since the streams listed above have
Page 100 and 101: Object Logical Block Number is the
Page 102 and 103: mechanism for the host software to
Page 104 and 105: Vendor ID - The Vendor ID reported
Page 108 and 109: 4.2.2 File Identifier Descriptor st
Page 110 and 111: Definitions: A FileIdentifier shall
Page 112 and 113: 3. Invalid Characters: A FileIdenti
Page 114 and 115: 4. Trailing Periods and Spaces: All
Page 116 and 117: 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
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ISO 9660 converted to UDF 1 st sess
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For File Structure: 5. Unallocated
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6.13 Recommendations for DVD+R and
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6.13.1.4.2 Anchor Volume Descriptor
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6.13.2.1 Requirements • The packe
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6.126.15 UDF Media Format Revision
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Description DCN Updated in UDF Revi
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Registration Form Disk Format Speci
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L Logical Block Size, 8, 9, 2425 Lo
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