Summary of POSIX.1-2001 Options

Copyright 2002, Garrett A. Wollman. All rights reserved.
See permission notice below.

Code

Option Name

Requirement

ADV

Advisory Information

Related header files: fcntl.h, limits.h, stdlib.h, and sys/mman.h

optional

AIO

Asynchronous Input and Output

Related header files: aio.h and limits.h

optional

Batch Environment Services and Utilities

Related utilities: qalter, qdel, qhold, qmove, qmsg, qrerun, qrls, qselect, qsig, qstat, and qsub

Subordinate Options
Code	Option Name	Requirement
N/A	Batch Accounting	optional
N/A	Batch Accounting	optional
N/A	Batch Checkpoint/Restart	optional
N/A	Batch Job Message Request	optional
N/A	Locate Batch Job Request	optional
N/A	Track Batch Job Request	optional

optional

N/A

C-Language Binding (1003.2-1992)

mandatory

C-Language Development Utilities

Related utilities: c99, lex, yacc, and ctags

optional

Clock Selection

Related header files: pthread.h and time.h

optional

FORTRAN Development Utilities (1003.2-1992)

Related utilities: ctags and fort77

optional

FORTRAN Runtime Utilities (1003.2-1992)

Related utilities: asa

optional

N/A

File Name Length Enforced (1003.1-1995)

mandatory-or-getconf

N/A

File Ownership Change Requires Privilege (1003.1-1995)

mandatory-or-getconf

FSC

File Synchronization

optional

IEC 60559 Floating-Point

Related utilities: c99

optional

IP6

IP Version 6 Socket API

Related header files: arpa/inet.h, netinet/in.h, and sys/socket.h

optional

N/A

Job Control (1003.1-1995)

mandatory

N/A

Locale Creation Utilities

Related utilities: localedef

optional

Memory Mapped Files

Related header files: sys/mman.h and sys/mman.h

optional

MPR

Memory Protection

Related header files: sys/mman.h

optional

MSG

Message Passing

Related header files: limits.h and mqueue.h

optional

MON

Monotonic Clock

Related header files: time.h

optional

PIO

Prioritized Input and Output

optional

CPT

Process CPU-Time Clocks

Related header files: time.h

optional

Process Memory Locking

Related header files: sys/mman.h

optional

Process Scheduling

Related header files: sched.h and spawn.h

optional

Process Sporadic Server

Related header files: limits.h and sched.h

optional

MLR

Range Memory Locking

Related header files: sys/mman.h

optional

Raw Sockets

Related header files: netinet/in.h and sys/socket.h

optional

RTS

Realtime Signals

Related header files: limits.h and signal.h

optional

N/A

Saved User and Group Ids (1003.1-1995)

mandatory

SEM

Semaphores

Related header files: limits.h and semaphore.h

optional

SHM

Shared Memory Objects

Related header files: sys/mman.h and sys/mman.h

optional

N/A

Shell

mandatory

Software Development Utilities

Related utilities: ar, make, nm, and strip

optional

SPN

Spawn

Related header files: spawn.h

optional

SIO

Synchronized Input and Output

Related header files: fcntl.h, sys/mman.h, and unistd.h

optional

THR

Threads

Related header files: limits.h, pthread.h, signal.h, sys/types.h, and trace.h

Subordinate Options
Code	Option Name	Requirement
BAR	Barriers Related header files: pthread.h, pthread.h, and sys/types.h	optional
N/A	Read-Write Locks Related header files: pthread.h and sys/types.h	mandatory
SPI	Spin Locks Related header files: pthread.h and sys/types.h	optional
TCT	Thread CPU-Time Clocks Related header files: pthread.h and time.h	optional
TPS	Thread Execution Scheduling Related header files: pthread.h	optional
TPI	Thread Priority Inheritance Related header files: pthread.h	optional
TPP	Thread Priority Protection Related header files: pthread.h	optional
TSH	Thread Process-Shared Synchronization Related header files: pthread.h	optional
TSP	Thread Sporadic Server Related header files: limits.h and sched.h	optional
TSA	Thread Stack Address Related header files: pthread.h	optional
TSS	Thread Stack Size Related header files: pthread.h	optional
TSF	Thread-Safe Functions Related header files: dirent.h, grp.h, pwd.h, stdio.h, stdlib.h, string.h, and time.h	optional

optional

TMO

Timeouts

Related header files: mqueue.h, pthread.h, semaphore.h, and trace.h

optional

TMR

Timers

Related header files: limits.h, sys/types.h, and time.h

optional

TRC

Trace

Related header files: limits.h, sys/types.h, and trace.h

Subordinate Options
Code	Option Name	Requirement
TEF	Trace Event Filter Related header files: sys/types.h and trace.h	optional
TRI	Trace Inherit Related header files: trace.h	optional
TRL	Trace Log Related header files: trace.h	optional

optional

TYM

Typed Memory Objects

Related header files: sys/mman.h and sys/stat.h

optional

User Portability Utilities (1003.2-1992)

Related utilities: alias, at, batch, bg, command, crontab, split, ctags, df, du, ex, expand, fc, fg, file, jobs, man, mesg, more, newgrp, nice, patch, ps, renice, split, strings, tabs, talk, time, tput, unalias, unexpand, uudecode, uuencode, vi, who, and write

Subordinate Options
Code	Option Name	Requirement
N/A	Terminal Characteristics (1003.2-1992)	optional

optional

XSI

X/Open System Interfaces

Pre-requisites: File Synchronization, Memory Mapped Files, Memory Protection, Thread Stack Address, Thread Stack Size, Thread Process-Shared Synchronization, Thread-Safe Functions, Threads, C-Language Development Utilities, and User Portability Utilities

Related header files: sys/mman.h, cpio.h, ctype.h, dirent.h, dlfcn.h, fcntl.h, fmtmsg.h, ftw.h, grp.h, iconv.h, langinfo.h, libgen.h, limits.h, math.h, monetary.h, ndbm.h, nl_types.h, poll.h, pthread.h, pwd.h, search.h, setjmp.h, signal.h, stdint.h, stdio.h, stdlib.h, string.h, strings.h, sys/ipc.h, sys/msg.h, sys/resource.h, sys/sem.h, sys/stat.h, sys/statvfs.h, sys/time.h, sys/types.h, sys/uio.h, sys/wait.h, syslog.h, tar.h, termios.h, time.h, unistd.h, utmpx.h, wchar.h, and wordexp.h

Related utilities: ar, at, batch, cal, chmod, compress, crontab, date, dd, df, fuser, gencat, hash, ipcrm, ipcs, kill, link, ls, nl, nm, od, pr, ps, ps, tabs, test, tr, tsort, type, ulimit, uncompress, unlink, uucp, uustat, uux, who, xargs, and zcat

Subordinate Options

Code

Option Name

Requirement

N/A

XSI Development Utilities

Related utilities: admin, cflow, ctags, cxref, delta, get, m4, patch, prs, rmdel, sact, sccs, unget, val, and what

optional

N/A

XSI Encryption Option Group

Related header files: stdlib.h and unistd.h

optional

N/A

XSI Enhanced Internationalization

mandatory

N/A

XSI Legacy Option Group

Related header files: stdlib.h, strings.h, sys/time.h, sys/timeb.h, unistd.h, and wchar.h

optional

XSI Obsolete Interfaces

Related header files: fnmatch.h, glob.h, regex.h, wordexp.h, ucontext.h, ulimit.h, and unistd.h

optional

N/A

XSI Realtime Option Group

Pre-requisites: Asynchronous Input and Output, Process Memory Locking, Range Memory Locking, Message Passing, Process Scheduling, Realtime Signals, Semaphores, Shared Memory Objects, Synchronized Input and Output, and Timers

Subordinate Options
Code	Option Name	Requirement
N/A	XSI Advanced Realtime Option Group Pre-requisites: Advisory Information, Clock Selection, Process CPU-Time Clocks, Monotonic Clock, Spawn, Process Sporadic Server, Timeouts, and Typed Memory Objects	optional

optional

N/A

XSI Realtime Threads Option Group

Pre-requisites: Thread Priority Inheritance, Thread Priority Protection, and Thread Scheduling

Subordinate Options
Code	Option Name	Requirement
N/A	Advanced Realtime Threads Pre-requisites: Barriers, Spin Locks, Thread CPU-Time Clocks, and Thread Sporadic Server	optional

optional

XSR

XSI STREAMS Option Group

Related header files: errno.h and stropts.h

optional

N/A

XSI Shared Memory (Issue 4, Release 2)

Related header files: sys/shm.h

Related utilities: ipcs

mandatory

N/A

XSI Tracing Option Group

Pre-requisites: Trace, Trace Event Filter, Trace Log, and Trace Inherit

optional

Permission to distribute this document, in original or modified form, and to create and distribute derivative works, is hereby granted, subject to the condition that the preceding copyright notice, this statement of permission, and the following disclaimer be reproduced verbatim in all such copies.

This document is based on the author's reading of IEEE Std.1003.1-2001. It does not reflect any corrigenda as may from time to time be issued. This is an unofficial secondary source, defers to the published standard, and in all cases users are advised to examine the text of Standard before making any conclusions on the basis of this analysis. This document is supplied without warranty of any kind, express or implied, not even the implied warranties of merchantability and suitability for a particular purpose.