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if (index < udfLabelLen || index == 0) needsCRC = TRUE; /* Append the CRC code to the file name, if needed. */ if (needsCRC) { /* Get the CRC value for the original Unicode string */ UINT16 udfCRCValue = CalculateCRC(udfName, udfNameLen); /* Determine the character index w<strong>here</strong> the CRC should */ /* begin. */ targetIndex = crcIndex; /* If the character being overlayed is a two-byte BCS */ /* character, replace the first byte with an underscore. */ if (overlayBytes > 0) dosLabel[targetIndex++] = '_'; } /* Append the encoded CRC value with delimiter. */ dosLabel[targetIndex++] = '#'; dosLabel[targetIndex++] = crcChar[udfCRCValue / (DOS_CRC_MODULUS * DOS_CRC_MODULUS)]; udfCRCValue %= DOS_CRC_MODULUS * DOS_CRC_MODULUS; dosLabel[targetIndex++] = crcChar[udfCRCValue / DOS_CRC_MODULUS]; udfCRCValue %= DOS_CRC_MODULUS; dosLabel[targetIndex++] = crcChar[udfCRCValue]; } /* Return the length of the resulting Unicode string. */ return (UINT16)targetIndex; /*******************************************************************/ /* UnicodeToUpper() */ /* Convert the given character to upper-case Unicode. */ /*******************************************************************/ UNICODE_CHAR UnicodeToUpper(UNICODE_CHAR value) { /* Actual implementation will vary to accommodate the target */ /* operating system API services. */ /* Just handle the ASCII range for the time being. */ return (value >= 'a' && value
} } /*******************************************************************/ /* IsVolumeLabelCharLegal() */ /* Determine if this is a legal volume label character. */ /*******************************************************************/ BOOLEAN IsVolumeLabelCharLegal(UNICODE_CHAR value) { /* Control characters are illegal. */ if (value
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Universal Disk Format ® Specificat
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REVISION HISTORY 1.00 October 24, 1
Page 6 and 7:
CONTENTS 1. INTRODUCTION ..........
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6.4 OSTA Compressed Unicode Algorit
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1. Introduction The OSTA Universal
Page 12 and 13:
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
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 106 and 107: The OS2EA Stream contains a table o
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 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 168 and 169: Description DCN Updated in UDF Revi
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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