ibm-information-center/dist/eclipse/plugins/i5OS.ic.apis_5.4.0.1/sprotnt.htm

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<title>setprotoent()--Open Protocol Database</title>
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<h2>setprotoent()--Open Protocol Database</h2>
<div class="box" style="width: 60%;">
<br>
&nbsp;&nbsp;Syntax<br>
<pre>
#include &lt;netdb.h&gt;
void setprotoent(int <em>stay_open</em>)
</pre>
<br>
&nbsp;&nbsp;Service Program Name: QSOSRV2<br>
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<br>
&nbsp;&nbsp;Default Public Authority: *USE<br>
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&nbsp;&nbsp;Threadsafe: No; see <a href="#USAGE_NOTES">Usage Notes</a>.<br>
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<p>The <em>setprotoent()</em> function is used to prepare for sequential access
to the protocol database file. <em>setprotoent()</em> opens the file and
repositions the file marker to the beginning of the file.</p>
<br>
<h3>Parameters</h3>
<dl>
<dt><strong><em>stay_open</em></strong></dt>
<dd>(Input) A value that indicates whether to leave the database file open
after each <em>getprotobynumber()</em> and <em>getprotobyname()</em>. A nonzero
value results in the database file being left open.</dd>
</dl>
<br>
<h3>Authorities</h3>
<p>No authorization is required.</p>
<br>
<h3><a name="USAGE_NOTES">Usage Notes</a></h3>
<ol>
<li>The iSeries Navigator or the
following CL commands can be used to access the protocol database file:<br>
<br>
<ul>
<li>WRKPCLTBLE (Work with Protocol Table Entries)</li>
<li>ADDPCLTBLE (Add Protocol Table Entry)</li>
<li>RMVPCLTBLE (Remove Protocol Table Entry)</li>
</ul>
<br>
</li>
<li>Do not use the <em>setprotoent()</em> function in a multithreaded
environment. See the multithread alternative <em>setprotoent_r()</em>
function.<br>
<br>
</li>
<li>When you develop in C-based
languages and an application is compiled with the _XOPEN_SOURCE macro defined
to the value 520 or greater, the <em>setprotoent()</em> API is mapped to
<em>qso_setprotoent98()</em>.</li>
</ol>
<br>
<h3>Related Information</h3>
<ul>
<li><a href=
"_xopen_source.htm">_XOPEN_SOURCE</a>--Using _XOPEN_SOURCE for the UNIX 98
compatible interface<br>
<br>
</li>
<li><a href="gprotnm.htm">getprotobyname()</a>--Get Protocol Information for
Protocol Name<br>
<br>
</li>
<li><a href="gprotnu.htm">getprotobynumber()</a>--Get Protocol Information for
Protocol Number<br>
<br>
</li>
<li><a href="gprotnt.htm">getprotoent()</a>--Get Next Entry from Protocol
Database<br>
<br>
</li>
<li><a href="eprotnt.htm">endprotoent()</a>--Close Protocol Database</li>
</ul>
<br>
<hr>
API introduced: V4R2
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