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IEEE Std 1003.1-2008 This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-911530 INTERNATIONAL ISO/IEC/ STANDARD IEEE 9945 First edition 2009-09-15 Information technology — Portable Operating System Interface (POSIX®) Base Specifications, Issue 7 Technologies de l'information — Spécifications de base de l'interface pour la portabilité des systèmes (POSIX ®), Issue 7 Reference number ISO/IEC/IEEE 9945:2009(E) Copyright © 2001-2008, IEEE and The Open Group. All rights reserved This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-911530 ISO/IEC/IEEE 9945:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. Neither the ISO Central Secretariat nor IEEE accepts any liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies and IEEE members. In the unlikely event that a problem relating to it is found, please inform the ISO Central Secretariat or IEEE at the address given below. COPYRIGHT PROTECTED DOCUMENT © IEEE 2001-2008 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 either ISO or IEEE at the respective address below. ISO copyright office Institute of Electrical and Electronics Engineers, Inc. Case postale 56 • CH-1211 Geneva 20 3 Park Avenue, New York • NY 10016-5997, USA Tel. + 41 22 749 01 11 E-mail [email protected] Fax + 41 22 749 09 47 Web www.ieee.org E-mail [email protected] Web www.iso.org Published in Switzerland ii Copyright © 2001-2008, IEEE and The Open Group. All rights reserved This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-911530 ISO/IEC/IEEE 9945:2009(E) Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non- governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. IEEE Standards documents are developed within the IEEE Societies and the Standards Coordinating Committees of the IEEE Standards Association (IEEE-SA) Standards Board. The IEEE develops its standards through a consensus development process, approved by the American National Standards Institute, which brings together volunteers representing varied viewpoints and interests to achieve the final product. Volunteers are not necessarily members of the Institute and serve without compensation. While the IEEE administers the process and establishes rules to promote fairness in the consensus development process, the IEEE does not independently evaluate, test, or verify the accuracy of any of the information contained in its standards. The main task of ISO/IEC JTC 1 is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is called to the possibility that implementation of this standard may require the use of subject matter covered by patent rights. By publication of this standard, no position is taken with respect to the existence or validity of any patent rights in connection therewith. ISO/IEEE is not responsible for identifying essential patents or patent claims for which a license may be required, for conducting inquiries into the legal validity or scope of patents or patent claims or determining whether any licensing terms or conditions provided in connection with submission of a Letter of Assurance or a Patent Statement and Licensing Declaration Form, if any, or in any licensing agreements are reasonable or non-discriminatory. Users of this standard are expressly advised that determination of the validity of any patent rights, and the risk of infringement of such rights, is entirely their own responsibility. Further information may be obtained from ISO or the IEEE Standards Association. ISO/IEC/IEEE 9945 was prepared by The Open Group (as The Open Group Technical Standard Base Specifications, Issue 7) and the Portable Applications Standards Committee of the Computer Society of the IEEE (as IEEE Std 1003.1™-2008). It was adopted by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 22, Programming languages, their environments and system software interfaces, in parallel with its approval by the ISO/IEC national bodies, under the “fast-track procedure” defined in the Partner Standards Development Organization cooperation agreement between ISO and IEEE. IEEE is responsible for the maintenance of this document with participation and input from ISO/IEC national bodies. This first edition of ISO/IEC/IEEE 9945 cancels and replaces ISO/IEC 9945-1:2003, ISO/IEC 9945-2:2003, ISO/IEC 9945-3:2003 and ISO/IEC 9945-4:2003, which have been technically revised. It also incorporates the Technical Corrigenda ISO/IEC 9945-1:2003/Cor.1:2004, ISO/IEC 9945-2:2003/Cor.1:2004, ISO/IEC 9945-3:2003/Cor.1:2004 and ISO/IEC 9945-4:2003/Cor.1:2004. Copyright © 2001-2008, IEEE and The Open Group. All rights reserved iii This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-911530 ISO/IEC/IEEE 9945:2009(E) (blank page) iv Copyright © 2001-2008, IEEE and The Open Group. All rights reserved This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-911530 ISO/IEC/IEEE 9945:2009(E) Standard for Information Technology– Portable Operating System Interface (POSIX®) Base Specifications, Issue 7 TM IEEE Computer Society Sponsored by the Portable Applications Standards Committee and The Open Group IEEE 1003.1 3 Park Avenue IEEE Std 1003.1™-2008 New York, NY 10016-5997, USA (Revision of IEEE Std 1003.1-2004) 1 December 2008 Copyright © 2001-2008, IEEE and The Open Group. All rights reserved v This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-911530 ISO/IEC/IEEE 9945:2009(E) (blank page) vi Copyright © 2001-2008, IEEE and The Open Group. All rights reserved This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-911530 ISO/IEC/IEEE 9945:2009(E) IEEE Std 1003.1™-2008 (Revision of IEEE Std 1003.1-2004) The Open Group Technical Standard Base Specifications, Issue 7 Standard for Information Technology— Portable Operating System Interface (POSIX®) Base Specifications, Issue 7 Sponsor Portable Applications Standards Committee of the IEEE Computer Society and The Open Group Approved 26 September 2008 IEEE-SA Standards Board Approved 24 July 2008 The Open Group Copyright © 2001-2008, IEEE and The Open Group. All rights reserved vii This preview is downloaded from www.sis.se. Buy the entire standard via https://www.sis.se/std-911530 ISO/IEC/IEEE 9945:2009(E) Abstract POSIX.1-2008 is simultaneously IEEE Std 1003.1™-2008 and The Open Group Technical Standard Base Specifications, Issue 7. POSIX.1-2008 defines a standard operating system interface and environment, including a command interpreter (or “shell”), and common utility programs to support applications portability at the source code level. POSIX.1-2008 is intended to be used by both application developers and system implementors and comprises four major components (each in an associated volume): • General terms, concepts, and interfaces common to all volumes of this standard, including utility conventions and C-language header definitions, are included in the Base Definitions volume. • Definitions for system service functions and subroutines, language-specific system services for the C programming language, function issues, including portability, error handling, and error recovery, are included in the System Interfaces volume. • Definitions for a standard source code-level interface to command interpretation services (a “shell”) and common utility programs for application programs are included in the Shell and Utilities volume. • Extended rationale that did not fit well into the rest of the document structure, which contains historical information concerning the contents of POSIX.1-2008 and why features were included or discarded by the standard developers, is included in the Rationale (Informative) volume. The following areas are outside the scope of POSIX.1-2008: • Graphics interfaces • Database management system interfaces • Record
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