160 lines
4.0 KiB
HTML
160 lines
4.0 KiB
HTML
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<!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>inet_lnaof()--Separate Local Portion of IP Address</title>
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<!-- Begin Header Records ========================================== -->
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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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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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</head>
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<body>
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<script type="text/javascript" language="Javascript" src="../rzahg/synch.js">
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</script>
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<a name="Top_Of_Page"></a>
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<h2>inet_lnaof()--Separate Local Portion of IP Address</h2>
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<div class="box" style="width: 70%;">
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<br>
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BSD 4.3 Syntax<br>
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<pre>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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int inet_lnaof(struct in_addr <em>internet_address</em>)
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</pre>
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<br>
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Service Program Name: QSOSRV2<br>
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Default Public Authority: *USE<br>
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<br>
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Threadsafe: Yes<br>
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<br>
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</div>
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<br>
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<div class="box" style="width: 70%;">
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<br>
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<a href="_xopen_source.htm">UNIX 98 Compatible Syntax</a><br>
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<pre>
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#define _XOPEN_SOURCE 520
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#include <arpa/inet.h>
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in_addr_t inet_lnaof(struct in_addr <em>internet_address</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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<br>
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<p>The <em>inet_lnaof()</em> function is used to extract the local host portion
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of an IP address.</p>
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<p>There are two versions of the API, as shown above. The base i5/OS API uses BSD
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4.3 structures and syntax. The other uses syntax and structures compatible with the
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UNIX 98 programming interface specifications. You can select the UNIX 98 compatible
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interface with the <a href="_xopen_source.htm">_XOPEN_SOURCE</a> macro.</p>
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<br>
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<h3>Parameters</h3>
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<dl>
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<dt><strong>internet_address</strong></dt>
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<dd>(Input) The 32-bit IP address from which the local host portion of the
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address is to be extracted.</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><em>inet_lnaof()</em> returns an integer. Possible values are:</p>
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<ul>
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<li>n (where n is the local host address)</li>
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</ul>
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<br>
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<h3>Usage Notes</h3>
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<ol>
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<li>When you develop in C-based languages and an application is compiled with the _XOPEN_SOURCE
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macro defined to the value 520 or greater, the <em>inet_lnaof()</em> API is mapped to
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<em>qso_inet_lnaof98()</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="inmaka.htm">inet_makeaddr()</a>--Combine Network Portion and Host
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Portion to Make IP Address<br>
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<br>
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</li>
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<li><a href="inneto.htm">inet_netof()</a>--Separate Network Portion of IP
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Address</li>
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</ul>
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<br>
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<hr>
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API introduced: V3R1
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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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