IEC TR 62291:2009

Multimedia data storage - Application program interface for UDF based file systems

IEC/TR 62291:2009(E) specifies an application program interface (API) for reading and writing the files which conform to the Universal Disk Format (UDF) ® specification revision 2.00 developed by the Optical Storage Technology Association (OSTA) and its security extension. This second edition cancels and replaces the first edition, published in 2002, and constitutes a technical revision. The significant changes with respect to the first edition are the following:
- reference document ISO/IEC 9945-1:1990 is replaced with ISO/IEC 9945-2:2003;
- reference document UDF 2.00 is replaced with UDF 2.01.

General Information

• Status: Published
• Publication Date: 24-Feb-2009
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 33.160.40 - Video systems
• ICS: 35.220.20 - Magnetic storage devices in general
• Technical Committee: TA 18 - Multimedia home systems and applications for end-user networks
• Current Stage: PPUB - Publication issued
• Start Date: 31-May-2009
• Completion Date: 25-Feb-2009

Relations

• Revises: IEC TR 62291:2002 - Multimedia data storage - Application program interface for UDF based file systems
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC/TR 62291 ®
Edition 2.0 2009-02
TECHNICAL
REPORT
Multimedia data storage – Application program interface for UDF based file
systems
IEC/TR 62291:2009(E)
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IEC/TR 62291 ®
Edition 2.0 2009-02
TECHNICAL
REPORT
Multimedia data storage – Application program interface for UDF based file
systems
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
Q
ICS 33.160.40; 35.220 ISBN 978-2-88910-664-6
– 2 – TR 62291 © IEC:2009(E)
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Normative references .6
3 Terms and definitions .6
4 Notation .7
5 File operations conforming to ISO/IEC 9945-2 .7
6 UDF specific file operations.8
6.1 Header and data structure.8
6.1.1 General .8
6.1.2 File entry structures in udf.h .8
6.1.3 Extended attribute structure in udf.h .10
6.1.4 Date and time structure in udf.h.10
6.1.5 Permission structure in udf.h .11
6.2 Get UDF file attribute information .11
6.2.1 Get a UDF file entry.11
6.2.2 Get UDF extended attribute .12
6.3 Set UDF file attribute information .12
6.3.1 Set a access permission.12
6.3.2 Set a date and time .13
7 Security extension .14
7.1 General .14
7.2 Header and data structure.14
7.2.1 Header file.14
7.2.2 Access log descriptor structure in the udfse.h header file .14
7.3 Log operation .14
7.3.1 General .14
7.3.2 Get a log .14
7.4 Licensing operation .15
7.4.1 Get a license list.15
7.4.2 Add a license.15
7.4.3 Delete a license.16
7.4.4 Set a license.16

Table 1 – File operations conforming to ISO/IEC 9945-2.8
Table 2 – udfent structure .9
Table 3 – udftag structure .9
Table 4 – timestamp structure.10
Table 5 – regid structure.10
Table 6 – udfxattr structure .10
Table 7 – udftime structure .10
Table 8 – aldesc structure.14
Table 9 – envspec structure.14

TR 62291 © IEC:2009(E) – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
______________
MULTIMEDIA DATA STORAGE –
APPLICATION PROGRAM INTERFACE
FOR UDF BASED FILE SYSTEMS
FOREWORD
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The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example “state of the art”.
IEC 62291, which is a technical report has been prepared by IEC technical committee 100:
Audio, video and multimedia systems and equipment.
This second edition cancels and replaces the first edition, published in 2002, and constitutes
a technical revision.
The significant changes with respect to the first edition are the following:
• reference document ISO/IEC 9945-1:1990 is replaced with ISO/IEC 9945-2:2003.
• reference document UDF 2.00 is replaced with UDF 2.01.

– 4 – TR 62291 © IEC:2009(E)
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
100/1452/CDV 100/1499/RVC
Full information on the voting for the approval of this technical report can be found in the
report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until

the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the
data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

TR 62291 © IEC:2009(E) – 5 –
INTRODUCTION
Interchangeable storage media have been widely employed for information interchange; the
following extensions to their media format should therefore be standardized:
a) additional facilities including security (access control, originality management, etc.);
b) volume and file structure supporting the facilities;
c) API (Application Program Interfaces) to the volume and file structure.
For a number of disc media, ISO/IEC JTC1/SC15 developed a generic standard of volume
and file structure and it was actually used for rewritable, recordable and read-only DVD and
recordable CD file systems with some subsetting by OSTA (Optical Storage Technology
Association). The subsetting specification is called a UDF (Universal Disk Format).
Additional facilities and an API for the UDF have been discussed in OITDA (Optoelectronic
Industry and Technology Development Association). OITDA drafted their specifications and
submitted them to JISC (Japanese Industrial Standard Committee). METI (Ministry of
Economy, Trade and Industry, Japan) approved them and JSA (Japanese Standards
Association) published them in July 2001 as
a) JIS/TR X 0040:2001 Security Extension to Universal Disk Format (UDF);
b) JIS/TR X 0041:2001 Application Program Interface for UDF based File Systems.
IEC/TC100 National Committee of Japan then submitted the English version of JIS/TR X
0041:2001 to IEC/TC100.
– 6 – TR 62291 © IEC:2009(E)
MULTIMEDIA DATA STORAGE –
APPLI
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