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7<title>Fcntl</title>
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10<h1><CODE><a href="../../nn/Overview.html">nn</a>::<a href="../../nn/socket/Overview.html">socket</a>::Fcntl</CODE> Function</h1>
11<h2>Syntax</h2>
12    <div class="section">
13      <pre class="definition">
14s32 Fcntl(
15     s32 s,
16     s32 cmd,
17     s32 val
18);
19</pre>
20    </div>
21<h2>Arguments</h2>
22    <div class="section">
23      <table class="arguments">
24        <thead>
25          <tr>
26            <td width="15" />
27<th>Name</th>
28<td>Description</td>
29          </tr>
30        </thead>
31        <tr>
32<td>in</td>
33<th>s</th>
34<td>Specifies a socket descriptor. Specifies a socket descriptor created using the <a href="../../nn/socket/Socket.html"><CODE>Socket</CODE></a> or <a href="../../nn/socket/Accept.html"><CODE>Accept</CODE></a> function.</td>
35        </tr>
36        <tr>
37<td>in</td>
38<th>cmd</th>
39<td>Specifies what to do with the status flags.<br /> <CODE>F_GETFL</CODE>: Read the status flags.<br /> <CODE>F_SETFL</CODE>: Change the status flags.</td>
40        </tr>
41        <tr>
42<td>in</td>
43<th>val</th>
44<td>Specifies additional arguments required for certain actions. If <SPAN class="argument">cmd</SPAN> is <CODE>F_GETFL</CODE>, there are no additional arguments required and this argument is ignored. If <SPAN class="argument">cmd</SPAN> is <CODE>F_SETFL</CODE>, this specifies the status flags to set. Specify <CODE>0</CODE> or a bitwise OR of the following values.<br /><CODE>O_NONBLOCK</CODE>: Sets the socket to non-blocking mode. If this flag is not specified, the socket will be in blocking mode. Note that a socket is set in blocking mode by default at time of creation.</td>
45        </tr> </table>
46    </div>
47<h2>Return Values</h2>
48    <div class="section">
49      <br /> <br />
50      <table class="arguments">
51        <thead>
52          <tr>
53<th>Value</th>
54<td>Description</td>
55          </tr>
56        </thead>
57        <tr>
58          <th>0</th>
59<td>Process was successful.</td>
60        </tr>
61        <tr>
62<th><CODE>EBADF</CODE></th>
63<td>The socket descriptor is invalid.</td>
64        </tr>
65        <tr>
66<th><CODE>EINVAL</CODE></th>
67<td>Indicates an illegal call of one of the following. The control method specified by <SPAN class="argument">cmd</SPAN> is invalid.</td>
68        </tr>
69        <tr>
70<th><CODE>ENETDOWN</CODE></th>
71<td>The network is not available.</td>
72        </tr>
73        <tr>
74<th><CODE>ENETRESET</CODE></th>
75<td>Socket library is not initialized.</td>
76        </tr>
77        <tr>
78<th><CODE>ENOMEM</CODE></th>
79<td>Cannot allocate the memory required for the process.</td>
80        </tr>
81      </table> </div>
82<h2>Description</h2>
83    <div class="section">
84<p>Sets or gets socket status flags.</p><!-- write here --></div>
85<h2>See Also</h2>
86    <div class="section">
87<p class="reference"><a href="../../nn/socket/Accept.html"><CODE>Accept</CODE></a><BR> <a href="../../nn/socket/Connect.html"><CODE>Connect</CODE></a><BR> <a href="../../nn/socket/Recv.html"><CODE>Recv</CODE></a><BR> <a href="../../nn/socket/Send.html"><CODE>Send</CODE></a><br /> </p>
88    </div>
89<h2>Revision History</h2>
90    <div class="section">
91      <dl class="history">
92        <dt>2010/06/14</dt>
93<dd>Initial version.<br />
94        </dd>
95      </dl>
96    </div>
97  <hr><p>CONFIDENTIAL</p></body>
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99