codes.html

IEEE 1003.1-2003, Single Unix Specification v3

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="MPR">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MPR</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Memory Protection <img src="../images/opt-end.gif" alt="[Option End]"
border="0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the MPR margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the MPR margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="MSG">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MSG</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Message Passing <img src="../images/opt-end.gif" alt="[Option End]"
border="0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the MSG margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the MSG margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="MX">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">MX</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> IEC 60559 Floating-Point Option <img src="../images/opt-end.gif" alt=
"[Option End]" border="0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the MX margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the MX margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="OB">&nbsp;</a>
<a name="OB XSI">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">OB</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Obsolescent <img src="../images/opt-end.gif" alt="[Option End]" border=
"0"></span><br>
 The functionality described may be withdrawn in a future version of this volume of IEEE&nbsp;Std&nbsp;1003.1-2001. Strictly
Conforming POSIX Applications and Strictly Conforming XSI Applications shall not use obsolescent features.</p>

<p>Where applicable, the material is identified by use of the OB margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="OF">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">OF</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Output Format Incompletely Specified <img src="../images/opt-end.gif"
alt="[Option End]" border="0"></span><br>
 The functionality described is an XSI extension. The format of the output produced by the utility is not fully specified. It is
therefore not possible to post-process this output in a consistent fashion. Typical problems include unknown length of strings and
unspecified field delimiters.</p>

<p>Where applicable, the material is identified by use of the OF margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="OH">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">OH</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Optional Header <img src="../images/opt-end.gif" alt="[Option End]"
border="0"></span><br>
 In the SYNOPSIS section of some interfaces in the System Interfaces volume of IEEE&nbsp;Std&nbsp;1003.1-2001 an included header is
marked as in the following example:</p>

<pre>
<tt><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">OH</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0">
#include &lt;sys/types.h&gt;
<img src="../images/opt-end.gif" alt="[Option End]" border="0">
</span>#include &lt;grp.h&gt;
struct group *getgrnam(const char *name);
</tt>
</pre>

<p>The OH margin legend indicates that the marked header is not required on XSI-conformant systems.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="PIO">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">PIO</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Prioritized Input and Output <img src="../images/opt-end.gif" alt=
"[Option End]" border="0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the PIO margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the PIO margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="PS">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">PS</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Process Scheduling <img src="../images/opt-end.gif" alt="[Option End]"
border="0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the PS margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the PS margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="RS">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">RS</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Raw Sockets <img src="../images/opt-end.gif" alt="[Option End]" border=
"0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the RS margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the RS margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="RTS">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">RTS</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Realtime Signals Extension <img src="../images/opt-end.gif" alt=
"[Option End]" border="0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the RTS margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the RTS margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="SD">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SD</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Software Development Utilities <img src="../images/opt-end.gif" alt=
"[Option End]" border="0"></span><br>
 The functionality described is optional.</p>

<p>Where applicable, utilities are marked with the SD margin legend in the SYNOPSIS section. Where additional semantics apply to a
utility, the material is identified by use of the SD margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="SEM">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SEM</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Semaphores <img src="../images/opt-end.gif" alt="[Option End]" border=
"0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the SEM margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the SEM margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="SHM">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SHM</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Shared Memory Objects <img src="../images/opt-end.gif" alt=
"[Option End]" border="0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the SHM margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the SHM margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="SIO">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SIO</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Synchronized Input and Output <img src="../images/opt-end.gif" alt=
"[Option End]" border="0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the SIO margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the SIO margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="SPI">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SPI</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Spin Locks <img src="../images/opt-end.gif" alt="[Option End]" border=
"0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the SPI margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the SPI margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="SPN">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SPN</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Spawn <img src="../images/opt-end.gif" alt="[Option End]" border=
"0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the SPN margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the SPN margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="SS">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">SS</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Process Sporadic Server <img src="../images/opt-end.gif" alt=
"[Option End]" border="0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the SS margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the SS margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="TCT">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TCT</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Thread CPU-Time Clocks <img src="../images/opt-end.gif" alt=
"[Option End]" border="0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the TCT margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the TCT margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="TEF">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TEF</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Trace Event Filter <img src="../images/opt-end.gif" alt="[Option End]"
border="0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the TEF margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the TEF margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="THR">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">THR</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Threads <img src="../images/opt-end.gif" alt="[Option End]" border=
"0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the THR margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the THR margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="TMO">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TMO</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Timeouts <img src="../images/opt-end.gif" alt="[Option End]" border=
"0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the TMO margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the TMO margin legend.</p>

<p><i>See help on <a href="#tag_01_05_02">Margin Code Notation</a></i>.</p>
<a name="TMR">&nbsp;</a>
<p><span class="shade"><tt>[<a href="../basedefs/xbd_chap01.html#tag_01_05_01">TMR</a>]</tt><img src=
"../images/opt-start.gif" alt="[Option Start]" border="0"> Timers <img src="../images/opt-end.gif" alt="[Option End]" border=
"0"></span><br>
 The functionality described is optional. The functionality described is also an extension to the ISO&nbsp;C standard.</p>

<p>Where applicable, functions are marked with the TMR margin legend in the SYNOPSIS section. Where additional semantics apply to a
function, the material is identified by use of the TMR margin legend.</p>