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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title>t_sysconf</title></head><body bgcolor=white><center><font size=2>The Single UNIX ® Specification, Version 2<br>Copyright © 1997 The Open Group</font></center><hr size=2 noshade><h4>NAME</h4><blockquote>t_sysconf - get configurable XTI variables</blockquote><h4>SYNOPSIS</h4><blockquote><pre><code>#include <<a href="xti.h.html">xti.h</a>>int t_sysconf( int name);</code></pre></blockquote><h4>DESCRIPTION</h4><blockquote><pre><P><table bordercolor=#000000 border=1 align=center><tr valign=top><th align=center><b>Parameters</b><th align=center><b>Before call</b><th align=center><b>After call</b><tr valign=top><td align=left>name<td align=center>x<td align=center>/</table></pre><p>The <i>t_sysconf()</i>function provides a method for the application todetermine the current value of configurable and implementation-dependent XTI limits or options.<p>The <I>name</I>argument represents the XTI system variable to be queried. Thefollowing table lists the minimal set of XTI system variables from <i><a href="xti.h.html"><xti.h></a></i>that can be returned by <i>t_sysconf()</i>,and the symbolic constants,defined in <i><a href="xti.h.html"><xti.h></a></i>that are the corresponding values used for <I>name</I>.<P><table bordercolor=#000000 border=1 align=center><tr valign=top><th align=left><b>Variable</b><th align=left><b>Value of Name</b><tr valign=top><td align=left>T_IOV_MAX<td align=left>_SC_T_IOV_MAX</table><p></blockquote><h4>VALID STATES</h4><blockquote>All.</blockquote><h4>ERRORS</h4><blockquote>On failure, <I>t_errno</I>is set to the following:<dl compact><dt>[TBADFLAG]<dd><I>name</I>has an invalid value.</dl></blockquote><h4>RETURN VALUES</h4><blockquote>If <I>name</I>is valid, <i>t_sysconf()</i>returns the value of the requestedlimit/option (which might be -1) and leaves <I>t_errno</I>unchanged.Otherwise, a value of -1 is returned and <I>t_errno</I>is set to indicate an error.</blockquote><h4>SEE ALSO</h4><blockquote><i><a href="t_rcvv.html">t_rcvv()</a></i>,<i><a href="t_rcvvudata.html">t_rcvvudata()</a></i>,<i><a href="t_sndv.html">t_sndv()</a></i>,<i><a href="t_sndvudata.html">t_sndvudata()</a></i>.</blockquote><hr size=2 noshade><center><font size=2>UNIX ® is a registered Trademark of The Open Group.<br>Copyright © 1997 The Open Group<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]</font></center><hr size=2 noshade></body></html>⌨️ 快捷键说明
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