165 lines
3.8 KiB
HTML
165 lines
3.8 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="Copyright" content="Copyright (c) 2006 by IBM Corporation">
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<title>res_nisourserver()--Check Server Address</title>
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<!-- Begin Header Records ========================================== -->
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<!-- Unix8 SCRIPT J converted by B2H R4.1 (346) (CMS) by V2KEA304 -->
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<!-- at RCHVMW2 on 17 Feb 1999 at 11:05:09 -->
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<!-- Edited by Kersten Feb 02 -->
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<!--End Header Records -->
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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<a name="Top_Of_Page"></a>
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<!-- Java sync-link -->
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<script type="text/javascript" language="Javascript" src="../rzahg/synch.js">
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</script>
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<h2>res_nisourserver()--Check Server Address</h2>
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<div class="box" style="width: 60%;">
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<br>
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Syntax<br>
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<pre>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <arpa/nameser.h>
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#include <resolv.h>
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int res_nisourserver(state* <em>res</em>,
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const struct sockaddr_in <em>server</em>)
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</pre>
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<br>
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Service Program Name: QSOSRV2<br>
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<!-- iddvc RMBR -->
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<br>
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Default Public Authority: *USE<br>
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<!-- iddvc RMBR -->
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<br>
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Threadsafe: Yes<br>
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<!-- iddvc RMBR -->
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<br>
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</div>
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<p>The <em>res_nisourserver()</em> looks up the specified <em>server</em>
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address in the ns_addr_list[] of the specified <em>res</em> structure.</p>
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<br>
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<h3>Parameters</h3>
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<dl>
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<dt><strong>res</strong></dt>
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<dd>(Input) The pointer to the <strong>state</strong> structure.<br>
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<br>
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</dd>
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<dt><strong>server</strong></dt>
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<dd>(Input) The server address to check.</dd>
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</dl>
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<br>
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<h3>Authorities:</h3>
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<p>No authorization is required.</p>
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<br>
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<h3>Return Value</h3>
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<p>(0) Server not found in ns_addr_list[].</p>
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<p>(>0) Server found in ns_addr_list[].</p>
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<p>(<0) Error.</p>
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<br>
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<h3>Error Conditions</h3>
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<p>When the <em>res_nisourserver()</em> function returns an error,
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<em>errno</em> will be set to one of the following:</p>
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<dl>
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<dt><em>[EFAULT]</em></dt>
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<dd><p>The system detected a pointer that was invalid
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while attempting to access an input pointer.</p></dd>
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<dt><em>[EINVAL]</em></dt>
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<dd><p>One of the following reasons:</p>
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<ul>
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<li>A NULL pointer was passed to <em>res_nisourserver()</em><br><br></li>
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<li>The <strong>res</strong> appears to be initialized but the reserved field
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is not set to zeros.</li>
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</ul>
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</dl>
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<br>
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<h3>Related Information</h3>
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<ul>
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<li><a href="resfindzonecut.htm">res_findzonecut()</a>--Find the Enclosing Zone and
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Servers<br>
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<br>
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</li>
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<li><a href="resninit.htm">res_init()</a>--Initialize res Structure<br>
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<br>
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</li>
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<li><a href="resnclose.htm">res_nclose()</a>--Close Socket and Reset res
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Structure<br>
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<br>
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</li>
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<li><a href="resnmkquery.htm">res_nmkquery()</a>--Place Domain Query in
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Buffer<br>
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<br>
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</li>
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<li><a href="resnquery.htm">res_nquery()</a>--Send Domain Query<br>
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<br>
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</li>
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<li><a href="resnsearch.htm">res_nsearch()</a>--Search for Domain Name<br>
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<br>
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</li>
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<li><a href="resnsend.htm">res_nsend()</a>--Send Buffered Domain Query<br>
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<br>
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</li>
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<li><a href="resxlt.htm">res_xlate()</a>--Translate DNS Packets</li>
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</ul>
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<br>
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<hr>
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API introduced: V5R1
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<hr>
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<center>
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<table cellpadding="2" cellspacing="2">
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<tr align="center">
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<td valign="middle" align="center"><a href="#Top_Of_Page">Top</a> | <a href=
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"unix.htm">UNIX-Type APIs</a> | <a href="aplist.htm">APIs by category</a> </td>
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</tr>
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</table>
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</center>
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</body>
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</html>
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