169 lines
4.7 KiB
HTML
169 lines
4.7 KiB
HTML
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<!-- Copyright (c) 2001 The Open Group, All Rights Reserved -->
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<title>shutdown</title>
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<body bgcolor="white">
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<basefont size="3"> <a name="shutdown"></a> <a name="tag_03_679"></a><!-- shutdown -->
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<!--header start-->
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<center><font size="2">The Open Group Base Specifications Issue 6<br>
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IEEE Std 1003.1-2001<br>
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Copyright © 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
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<!--header end-->
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<hr size="2" noshade>
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<h4><a name="tag_03_679_01"></a>NAME</h4>
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<blockquote>shutdown - shut down socket send and receive operations</blockquote>
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<h4><a name="tag_03_679_02"></a>SYNOPSIS</h4>
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<blockquote class="synopsis">
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<p><code><tt>#include <<a href="../basedefs/sys/socket.h.html">sys/socket.h</a>><br>
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<br>
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int shutdown(int</tt> <i>socket</i><tt>, int</tt> <i>how</i><tt>);<br>
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</tt></code></p>
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</blockquote>
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<h4><a name="tag_03_679_03"></a>DESCRIPTION</h4>
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<blockquote>
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<p>The <i>shutdown</i>() function shall cause all or part of a full-duplex connection on the socket associated with the file
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descriptor <i>socket</i> to be shut down.</p>
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<p>The <i>shutdown</i>() function takes the following arguments:</p>
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<dl compact>
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<dt><i>socket</i></dt>
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<dd>Specifies the file descriptor of the socket.</dd>
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<dt><i>how</i></dt>
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<dd>Specifies the type of shutdown. The values are as follows:
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<dl compact>
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<dt>SHUT_RD</dt>
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<dd>Disables further receive operations.</dd>
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<dt>SHUT_WR</dt>
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<dd>Disables further send operations.</dd>
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<dt>SHUT_RDWR</dt>
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<dd>Disables further send and receive operations.</dd>
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</dl>
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</dd>
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</dl>
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<p>The <i>shutdown</i>() function disables subsequent send and/or receive operations on a socket, depending on the value of the
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<i>how</i> argument.</p>
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</blockquote>
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<h4><a name="tag_03_679_04"></a>RETURN VALUE</h4>
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<blockquote>
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<p>Upon successful completion, <i>shutdown</i>() shall return 0; otherwise, -1 shall be returned and <i>errno</i> set to indicate
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the error.</p>
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</blockquote>
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<h4><a name="tag_03_679_05"></a>ERRORS</h4>
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<blockquote>
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<p>The <i>shutdown</i>() function shall fail if:</p>
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<dl compact>
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<dt>[EBADF]</dt>
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<dd>The <i>socket</i> argument is not a valid file descriptor.</dd>
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<dt>[EINVAL]</dt>
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<dd>The <i>how</i> argument is invalid.</dd>
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<dt>[ENOTCONN]</dt>
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<dd>The socket is not connected.</dd>
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<dt>[ENOTSOCK]</dt>
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<dd>The <i>socket</i> argument does not refer to a socket.</dd>
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</dl>
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<p>The <i>shutdown</i>() function may fail if:</p>
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<dl compact>
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<dt>[ENOBUFS]</dt>
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<dd>Insufficient resources were available in the system to perform the operation.</dd>
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</dl>
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</blockquote>
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<hr>
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<div class="box"><em>The following sections are informative.</em></div>
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<h4><a name="tag_03_679_06"></a>EXAMPLES</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_679_07"></a>APPLICATION USAGE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_679_08"></a>RATIONALE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_679_09"></a>FUTURE DIRECTIONS</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_03_679_10"></a>SEE ALSO</h4>
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<blockquote>
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<p><a href="getsockopt.html"><i>getsockopt</i>()</a> , <a href="read.html"><i>read</i>()</a> , <a href=
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"recv.html"><i>recv</i>()</a> , <a href="recvfrom.html"><i>recvfrom</i>()</a> , <a href="recvmsg.html"><i>recvmsg</i>()</a> , <a
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href="select.html"><i>select</i>()</a> , <a href="send.html"><i>send</i>()</a> , <a href="sendto.html"><i>sendto</i>()</a> , <a
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href="setsockopt.html"><i>setsockopt</i>()</a> , <a href="socket.html"><i>socket</i>()</a> , <a href=
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"write.html"><i>write</i>()</a> , the Base Definitions volume of IEEE Std 1003.1-2001, <a href=
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"../basedefs/sys/socket.h.html"><i><sys/socket.h></i></a></p>
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</blockquote>
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<h4><a name="tag_03_679_11"></a>CHANGE HISTORY</h4>
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<blockquote>
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<p>First released in Issue 6. Derived from the XNS, Issue 5.2 specification.</p>
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</blockquote>
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<div class="box"><em>End of informative text.</em></div>
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