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BS ISO/IEC 9945-4:2002

Current

Current

The latest, up-to-date edition.

Information technology. Portable operating system interface (POSIX) Rationale

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

30-04-2003

Part A Base Definitions
Appendix A Rationale for Base Definitions
           A.1 Introduction
                A.1.1 Scope
                A.1.2 Conformance
                A.1.3 Normative References
                A.1.4 Terminology
                A.1.5 Portability
           A.2 Conformance
                A.2.1 Implementation Conformance
                A.2.2 Application Conformance
                A.2.3 Language-Dependent Services for the C
                      Programming Language
                A.2.4 Other Language-Related Specifications
           A.3 Definitions
           A.4 General Concepts
                A.4.1 Concurrent Execution
                A.4.2 Directory Protection
                A.4.3 Extended Security Controls
                A.4.4 File Access Permissions
                A.4.5 File Hierarchy
                A.4.6 Filenames
                A.4.7 File Times Update
                A.4.8 Host and Network Byte Order
                A.4.9 Measurement of Execution Time
                A.4.10 Memory Synchronization
                A.4.11 Pathname Resolution
                A.4.12 Process ID Reuse
                A.4.13 Scheduling Policy
                A.4.14 Seconds Since the Epoch
                A.4.15 Semaphore
                A.4.16 Thread-Safety
                A.4.17 Tracing
                A.4.18 Treatment of Error Conditions for
                       Mathematical Functions
                A.4.19 Treatment of NaN Arguments for
                       Mathematical Functions
                A.4.20 Utility
                A.4.21 Variable Assignment
           A.5 File Format Notation
           A.6 Character Set
                A.6.1 Portable Character Set
                A.6.2 Character Encoding
                A.6.3 C Language Wide-Character Codes
                A.6.4 Character Set Description File
           A.7 Locale
                A.7.1 General
                A.7.2 POSIX Locale
                A.7.3 Locale Definition
                A.7.4 Locale Definition Grammar
                A.7.5 Locale Definition Example
           A.8 Environment Variables
                A.8.1 Environment Variable Definition
                A.8.2 Internationalization Variables
                A.8.3 Other Environment Variables
           A.9 Regular Expressions
                A.9.1 Regular Expression Definitions
                A.9.2 Regular Expression General Requirements
                A.9.3 Basic Regular Expressions
                A.9.4 Extended Regular Expressions
                A.9.5 Regular Expression Grammar
           A.10 Directory Structure and Devices
                A.10.1 Directory Structure and Files
                A.10.2 Output Devices and Terminal Types
           A.11 General Terminal Interface
                A.11.1 Interface Characteristics
                A.11.2 Parameters that Can be Set
           A.12 Utility Conventions
                A.12.1 Utility Argument Syntax
                A.12.2 Utility Syntax Guidelines
           A.13 Headers
                A.13.1 Format of Entries
Part B System Interfaces
Appendix B Rationale for System Interfaces
         B.1 Introduction
             B.1.1 Scope
             B.1.2 Conformance
             B.1.3 Normative References
             B.1.4 Change History
             B.1.5 Terminology
             B.1.6 Definitions
             B.1.7 Relationship to Other Formal Standards
             B.1.8 Portability
             B.1.9 Format of Entries
         B.2 General Information
             B.2.1 Use and Implementation of Functions
             B.2.2 The Compilation Environment
             B.2.3 Error Numbers
             B.2.4 Signal Concepts
             B.2.5 Standard I/O Streams
             B.2.6 STREAMS
             B.2.7 XSI Interprocess Communication
             B.2.8 Realtime
             B.2.9 Threads
             B.2.10 Sockets
             B.2.11 Tracing
             B.2.12 Data Types
         B.3 System Interfaces
             B.3.1 Examples for Spawn
Part C Shell and Utilities
Appendix C Rationale for Shell and Utilities
           C.1 Introduction
               C.1.1 Scope
               C.1.2 Conformance
               C.1.3 Normative References
               C.1.4 Change History
               C.1.5 Terminology
               C.1.6 Definitions
               C.1.7 Relationship to Other Documents
               C.1.8 Portability
               C.1.9 Utility Limits
               C.1.10 Grammar Conventions
               C.1.11 Utility Description Defaults
               C.1.12 Considerations for Utilities in
                     Support of Files of Arbitrary Size
               C.1.13 Built-In Utilities
           C.2 Shell Command Language
               C.2.1 Shell Introduction
               C.2.2 Quoting
               C.2.3 Token Recognition
               C.2.4 Reserved Words
               C.2.5 Parameters and Variables
               C.2.6 Word Expansions
               C.2.7 Redirection
               C.2.8 Exit Status and Errors
               C.2.9 Shell Commands
               C.2.10 Shell Grammar
               C.2.11 Signals and Error Handling
               C.2.12 Shell Execution Environment
               C.2.13 Pattern Matching Notation
               C.2.14 Special Built-In Utilities
           C.3 Batch Environment Services and Utilities
               C.3.1 Batch General Concepts
               C.3.2 Batch Services
               C.3.3 Common Behavior for Batch Environment
                     Utilities
           C.4 Utilities
Part D Portability Considerations
Appendix D Portability Considerations (Informative)
           D.1 User Requirements
               D.1.1 Configuration Interrogation
               D.1.2 Process Management
               D.1.3 Access to Data
               D.1.4 Access to the Environment
               D.1.5 Access to Determinism and Performance
                      Enhancements
               D.1.6 Operating System-Dependent Profile
               D.1.7 I/O Interaction
               D.1.8 Internationalization Interaction
               D.1.9 C-Language Extensions
               D.1.10 Command Language
               D.1.11 Interactive Facilities
               D.1.12 Accomplish Multiple Tasks Simultaneously
               D.1.13 Complex Data Manipulation
               D.1.14 File Hierarchy Manipulation
               D.1.15 Locale Configuration
               D.1.16 Inter-User Communication
               D.1.17 System Environment
               D.1.18 Printing
               D.1.19 Software Development
           D.2 Portability Capabilities
               D.2.1 Configuration Interrogation
               D.2.2 Process Management
               D.2.3 Access to Data
               D.2.4 Access to the Environment
               D.2.5 Bounded (Realtime) Response
               D.2.6 Operating System-Dependent Profile
               D.2.7 I/O Interaction
               D.2.8 Internationalization Interaction
               D.2.9 C-Language Extensions
               D.2.10 Command Language
               D.2.11 Interactive Facilities
               D.2.12 Accomplish Multiple Tasks Simultaneously
               D.2.13 Complex Data Manipulation
               D.2.14 File Hierarchy Manipulation
               D.2.15 Locale Configuration
               D.2.16 Inter-User Communication
               D.2.17 System Environment
               D.2.18 Printing
               D.2.19 Software Development
               D.2.20 Future Growth
           D.3 Profiling Considerations
               D.3.1 Configuration Options
               D.3.2 Configuration Options (Shell and Utilities)
               D.3.3 Configurable Limits
               D.3.4 Configuration Options (System Interfaces)
               D.3.5 Configurable Limits
               D.3.6 Optional Behavior
Part E Subprofiling Considerations
Appendix E Subprofiling Considerations (Informative)
         E.1 Subprofiling Option Groups
Index

Promotes portability of application programs across UNIX system environments for the interface specification of a portable operating system based on the UNIX system documentation.

Committee
IST/5
DevelopmentNote
Together with BS ISO/IEC 9945-1, BS ISO/IEC 9945-2 & BS ISO/IEC 9945-3 Supersedes BS EN 29945-1 & BS EN ISO/IEC 9945-2 Supersedes 02/653427 DC (05/2003) Not available separately, included in BS ISO/IEC 9945 (PTS 1-4) (CD-ROM) along with BS ISO/IEC 9945-1, BS ISO/IEC 9945-2 and BS ISO/IEC 9945-3. (11/2010)
DocumentType
Standard
Pages
350
PublisherName
British Standards Institution
Status
Current
SupersededBy
Supersedes

Standards Relationship
ISO/IEC 9945-4:2003 Identical
IEEE/Open Group 1003.1, 2013 Edition Identical
ISO/IEC 9945-4:2002 Identical

ISO/IEC 9945-1:2003 Information technology Portable Operating System Interface (POSIX) Part 1: Base Definitions
ISO/IEC 9945-2:2003 Information technology Portable Operating System Interface (POSIX) Part 2: System Interfaces
ISO/IEC 6429:1992 Information technology Control functions for coded character sets
ISO/IEC 8859-15:1999 Information technology 8-bit single-byte coded graphic character sets Part 15: Latin alphabet No. 9
ISO/IEC 8859-14:1998 Information technology 8-bit single-byte coded graphic character sets Part 14: Latin alphabet No. 8 (Celtic)
ISO/IEC 8802-3:2000 Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications
ISO/IEC 4873:1991 Information technology ISO 8-bit code for information interchange Structure and rules for implementation
IEC 60559:1989 Binary floating-point arithmetic for microprocessor systems
ISO 1539:1980 Programming languages FORTRAN
IEEE 854-1987 IEEE Standard for Radix-Independent Floating-Point Arithmetic
ISO/IEC 6937:2001 Information technology Coded graphic character set for text communication Latin alphabet
ISO/IEC 9899:2011 Information technology Programming languages C
ISO/IEC 2375:2003 Information technology — Procedure for registration of escape sequences and coded character sets
IEEE 754-2008 REDLINE IEEE Standard for Floating-Point Arithmetic
ISO/IEC 8652:2012 Information technology — Programming languages — Ada
ISO/IEC 8859-13:1998 Information technology 8-bit single-byte coded graphic character sets Part 13: Latin alphabet No. 7

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