179 lines
4.7 KiB
HTML
179 lines
4.7 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>endhostent_r()--Close Host Database</title>
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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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<!-- Begin Header Records ========================================== -->
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<!-- Unix8 SCRIPT J converted by B2H R4.1 (346) (CMS) by V2KEA304 -->
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<!--End Header Records -->
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<!-- Edited by Kersten Feb 02 -->
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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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<script type="text/javascript" language="Javascript" src="../rzahg/synch.js">
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</script>
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<h2>endhostent_r()--Close Host Database</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 <netdb.h>
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void endhostent_r(struct hostent_data
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*<em>hostent_data_struct_addr</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>endhostent_r()</em> function is used to close the host database
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file. The file is opened by those functions that retrieve information about a
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host (for example, <em>gethostent_r()</em>).</p>
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<h3>Parameters</h3>
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<dl>
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<dt>struct hostent_data *<strong>hostent_data_struct_addr</strong>
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(input) </dt>
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<dd>Specifies the pointer to the hostent_data structure, which is used to pass
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and preserve results between function calls. The field host_control_blk in the
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hostent_data structure must be initialized with hexadecimal zeros before its
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initial use. If compatibility with other platforms is required, then the entire
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hostent_data structure must be initialized to hexadecimal zeros before initial
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use.</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>The <em>endhostent_r()</em> function returns an integer. Possible values
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are:</p>
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<ul>
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<li>-1 (unsuccessful call)</li>
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<li>0 (successful call)</li>
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</ul>
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<p>The <strong>struct hostent_data</strong>denoted by
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<strong><em>hostent_data_struct_addr</em></strong> is defined in
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<strong><netdb.h></strong>.</p>
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<br>
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<h3>Error Conditions</h3>
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<p>When the <em>endhostent_r()</em> function fails, <em>errno</em> can be set
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to:</p>
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<dl>
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<dt><em><samp>[EINVAL]</samp></em></dt>
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<dd><p>The hostent_data structure was not properly
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initialized to hexadecimal zeros before initial use. For corrective action, see
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the description for structure hostent_data.</p></dd>
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</dl>
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<h3>Usage Notes</h3>
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<ol>
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<li>When the _XOPEN_SOURCE
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macro defined to the value 520 or greater, the host file is always closed. When
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the _XOPEN_SOURCE macro is not so defined, the host file will not be closed if a
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<em>sethostent_r()</em> call with a nonzero parameter value was previously done.<br>
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<br>
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</li>
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<li>The iSeries Navigator or the following CL commands can be
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used to access the host database file:<br>
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<br>
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<ul>
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<li>ADDTCPHTE (Add TCP/IP Host Table Entry)</li>
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<li>RMVTCPHTE (Remove TCP/IP Host Table Entry)</li>
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<li>CHGTCPHTE (Change TCP/IP Host Table Entry)</li>
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<li>RNMTCPHTE (Rename TCP/IP Host Table Entry)</li>
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<li>MRGTCPHT (Merge TCP/IP Host Tables)</li>
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</ul>
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<br>
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<br>
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</li>
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<li>When you develop in C-based languages and an application is compiled with
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the _XOPEN_SOURCE macro defined to the value 520 or greater, the <em>endhostent_r()</em>
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API is mapped to <em>qso_endhostent_r98()</em>.</li>
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</ol>
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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="_xopen_source.htm">_XOPEN_SOURCE</a>--Using _XOPEN_SOURCE for the UNIX 98
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compatible interface<br>
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<br>
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</li>
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<li><a href="tsghosta.htm">gethostbyaddr_r()</a>--Get Host Information for IP
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Address<br>
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<br>
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</li>
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<li><a href="tsghostb.htm">gethostbyname_r()</a>--Get Host Information for Host
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Name<br>
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<br>
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</li>
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<li><a href="tsghoste.htm">gethostent_r()</a>--Get Next Entry from Host
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Database<br>
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<br>
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</li>
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<li><a href="tsshoste.htm">sethostent_r()</a>--Open Host Database</li>
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</ul>
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<br>
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<hr>
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API introduced: V4R2
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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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