unistd.h.html

IEEE 1003.1-2003, Single Unix Specification v3

<dt>_POSIX_SYNCHRONIZED_IO</dt>

<dd><sup>[<a href="javascript:open_code('SIO')">SIO</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Synchronized Input and Output option. If this symbol has a value other than -1 or 0, it shall have
the value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_ATTR_STACKADDR</dt>

<dd><sup>[<a href="javascript:open_code('TSA')">TSA</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Stack Address Attribute option. If this symbol has a value other than -1 or 0, it shall have
the value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_ATTR_STACKSIZE</dt>

<dd><sup>[<a href="javascript:open_code('TSS')">TSS</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Stack Size Attribute option. If this symbol has a value other than -1 or 0, it shall have
the value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_CPUTIME</dt>

<dd><sup>[<a href="javascript:open_code('TCT')">TCT</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread CPU-Time Clocks option. If this symbol has a value other than -1 or 0, it shall have the
value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_PRIO_INHERIT</dt>

<dd><sup>[<a href="javascript:open_code('TPI')">TPI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Priority Inheritance option. If this symbol has a value other than -1 or 0, it shall have
the value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_PRIO_PROTECT</dt>

<dd><sup>[<a href="javascript:open_code('TPP')">TPP</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Priority Protection option. If this symbol has a value other than -1 or 0, it shall have the
value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_PRIORITY_SCHEDULING</dt>

<dd><sup>[<a href="javascript:open_code('TPS')">TPS</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Execution Scheduling option. If this symbol has a value other than -1 or 0, it shall have
the value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_PROCESS_SHARED</dt>

<dd><sup>[<a href="javascript:open_code('TSH')">TSH</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Process-Shared Synchronization option. If this symbol has a value other than -1 or 0, it
shall have the value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_SAFE_FUNCTIONS</dt>

<dd><sup>[<a href="javascript:open_code('TSF')">TSF</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread-Safe Functions option. If this symbol has a value other than -1 or 0, it shall have the
value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREAD_SPORADIC_SERVER</dt>

<dd><sup>[<a href="javascript:open_code('TSP')">TSP</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Thread Sporadic Server option. If this symbol has a value other than -1 or 0, it shall have the
value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_THREADS</dt>

<dd><sup>[<a href="javascript:open_code('THR')">THR</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Threads option. If this symbol has a value other than -1 or 0, it shall have the value 200112L.
<img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TIMEOUTS</dt>

<dd><sup>[<a href="javascript:open_code('TMO')">TMO</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Timeouts option. If this symbol has a value other than -1 or 0, it shall have the value 200112L.
<img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TIMERS</dt>

<dd><sup>[<a href="javascript:open_code('TMR')">TMR</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Timers option. If this symbol has a value other than -1 or 0, it shall have the value 200112L. <img
src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TRACE</dt>

<dd><sup>[<a href="javascript:open_code('TRC')">TRC</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Trace option. If this symbol has a value other than -1 or 0, it shall have the value 200112L. <img
src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TRACE_EVENT_FILTER</dt>

<dd><sup>[<a href="javascript:open_code('TEF')">TEF</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Trace Event Filter option. If this symbol has a value other than -1 or 0, it shall have the value
200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TRACE_INHERIT</dt>

<dd><sup>[<a href="javascript:open_code('TRI')">TRI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Trace Inherit option. If this symbol has a value other than -1 or 0, it shall have the value
200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TRACE_LOG</dt>

<dd><sup>[<a href="javascript:open_code('TRL')">TRL</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Trace Log option. If this symbol has a value other than -1 or 0, it shall have the value 200112L.
<img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_TYPED_MEMORY_OBJECTS</dt>

<dd><sup>[<a href="javascript:open_code('TYM')">TYM</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Typed Memory Objects option. If this symbol has a value other than -1 or 0, it shall have the value
200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX_VDISABLE</dt>

<dd>
This symbol shall be defined to be the value of a character that shall disable terminal special character handling as described in
<a href="termios.h.html"><i>&lt;termios.h&gt;</i></a> . This symbol shall always be set to a value other than -1.</dd>

<dt>_POSIX2_C_BIND</dt>

<dd>
The implementation supports the C-Language Binding option. This symbol shall always have the value 200112L.</dd>

<dt>_POSIX2_C_DEV</dt>

<dd><sup>[<a href="javascript:open_code('CD')">CD</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the C-Language Development Utilities option. If this symbol has a value other than -1 or 0, it shall
have the value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_CHAR_TERM</dt>

<dd>
The implementation supports at least one terminal type.</dd>

<dt>_POSIX2_FORT_DEV</dt>

<dd><sup>[<a href="javascript:open_code('FD')">FD</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the FORTRAN Development Utilities option. If this symbol has a value other than -1 or 0, it shall have
the value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_FORT_RUN</dt>

<dd><sup>[<a href="javascript:open_code('FR')">FR</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the FORTRAN Runtime Utilities option. If this symbol has a value other than -1 or 0, it shall have the
value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_LOCALEDEF</dt>

<dd>
The implementation supports the creation of locales by the <a href="../utilities/localedef.html"><i>localedef</i></a> utility. If
this symbol has a value other than -1 or 0, it shall have the value 200112L.</dd>

<dt>_POSIX2_PBS</dt>

<dd><sup>[<a href="javascript:open_code('BE')">BE</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Batch Environment Services and Utilities option. If this symbol has a value other than -1 or 0, it
shall have the value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_PBS_ACCOUNTING</dt>

<dd><sup>[<a href="javascript:open_code('BE')">BE</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Batch Accounting option. If this symbol has a value other than -1 or 0, it shall have the value
200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_PBS_CHECKPOINT</dt>

<dd><sup>[<a href="javascript:open_code('BE')">BE</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Batch Checkpoint/Restart option. If this symbol has a value other than -1 or 0, it shall have the
value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_PBS_LOCATE</dt>

<dd><sup>[<a href="javascript:open_code('BE')">BE</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Locate Batch Job Request option. If this symbol has a value other than -1 or 0, it shall have the
value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_PBS_MESSAGE</dt>

<dd><sup>[<a href="javascript:open_code('BE')">BE</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Batch Job Message Request option. If this symbol has a value other than -1 or 0, it shall have the
value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_PBS_TRACK</dt>

<dd><sup>[<a href="javascript:open_code('BE')">BE</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Track Batch Job Request option. If this symbol has a value other than -1 or 0, it shall have the
value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_SW_DEV</dt>

<dd><sup>[<a href="javascript:open_code('SD')">SD</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the Software Development Utilities option. If this symbol has a value other than -1 or 0, it shall have
the value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_POSIX2_UPE</dt>

<dd><sup>[<a href="javascript:open_code('UP')">UP</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the User Portability Utilities option. If this symbol has a value other than -1 or 0, it shall have the
value 200112L. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_V6_ILP32_OFF32</dt>

<dd>
The implementation provides a C-language compilation environment with 32-bit <b>int</b>, <b>long</b>, <b>pointer</b>, and
<b>off_t</b> types.</dd>

<dt>_V6_ILP32_OFFBIG</dt>

<dd>
The implementation provides a C-language compilation environment with 32-bit <b>int</b>, <b>long</b>, and <b>pointer</b> types and
an <b>off_t</b> type using at least 64 bits.</dd>

<dt>_V6_LP64_OFF64</dt>

<dd>
The implementation provides a C-language compilation environment with 32-bit <b>int</b> and 64-bit <b>long</b>, <b>pointer</b>, and
<b>off_t</b> types.</dd>

<dt>_V6_LPBIG_OFFBIG</dt>

<dd>
The implementation provides a C-language compilation environment with an <b>int</b> type using at least 32 bits and <b>long</b>,
<b>pointer</b>, and <b>off_t</b> types using at least 64 bits.</dd>

<dt>_XBS5_ILP32_OFF32 (<b>LEGACY</b>)</dt>

<dd><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation provides a C-language compilation environment with 32-bit <b>int</b>, <b>long</b>, <b>pointer</b>, and
<b>off_t</b> types. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_XBS5_ILP32_OFFBIG (<b>LEGACY</b>)</dt>

<dd><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation provides a C-language compilation environment with 32-bit <b>int</b>, <b>long</b>, and <b>pointer</b> types and
an <b>off_t</b> type using at least 64 bits. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_XBS5_LP64_OFF64 (<b>LEGACY</b>)</dt>

<dd><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation provides a C-language compilation environment with 32-bit <b>int</b> and 64-bit <b>long</b>, <b>pointer</b>, and
<b>off_t</b> types. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_XBS5_LPBIG_OFFBIG (<b>LEGACY</b>)</dt>

<dd><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation provides a C-language compilation environment with an <b>int</b> type using at least 32 bits and <b>long</b>,
<b>pointer</b>, and <b>off_t</b> types using at least 64 bits. <img src="../images/opt-end.gif" alt="[Option End]" border="0"></dd>

<dt>_XOPEN_CRYPT</dt>

<dd><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt="[Option Start]" border=
"0"><br>
The implementation supports the X/Open Encryption Option Group.</dd>

<dt>_XOPEN_ENH_I18N</dt>

<dd>