📄 shutdown.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta name="generator" content="HTML Tidy, see www.w3.org"><meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"><link type="text/css" rel="stylesheet" href="style.css"><!-- Generated by The Open Group's rhtm tool v1.2.1 --><!-- Copyright (c) 2001-2003 The Open Group, All Rights Reserved --><title>shutdown</title></head><body bgcolor="white"><basefont size="3"> <a name="shutdown"></a> <a name="tag_03_679"></a><!-- shutdown --> <!--header start--><center><font size="2">The Open Group Base Specifications Issue 6<br>IEEE Std 1003.1, 2003 Edition<br>Copyright © 2001-2003 The IEEE and The Open Group, All Rights reserved.</font></center><!--header end--><hr size="2" noshade><h4><a name="tag_03_679_01"></a>NAME</h4><blockquote>shutdown - shut down socket send and receive operations</blockquote><h4><a name="tag_03_679_02"></a>SYNOPSIS</h4><blockquote class="synopsis"><p><code><tt>#include <<a href="../basedefs/sys/socket.h.html">sys/socket.h</a>><br><br> int shutdown(int</tt> <i>socket</i><tt>, int</tt> <i>how</i><tt>);<br></tt></code></p></blockquote><h4><a name="tag_03_679_03"></a>DESCRIPTION</h4><blockquote><p>The <i>shutdown</i>() function shall cause all or part of a full-duplex connection on the socket associated with the filedescriptor <i>socket</i> to be shut down.</p><p>The <i>shutdown</i>() function takes the following arguments:</p><dl compact><dt><i>socket</i></dt><dd>Specifies the file descriptor of the socket.</dd><dt><i>how</i></dt><dd>Specifies the type of shutdown. The values are as follows: <dl compact><dt>SHUT_RD</dt><dd>Disables further receive operations.</dd><dt>SHUT_WR</dt><dd>Disables further send operations.</dd><dt>SHUT_RDWR</dt><dd>Disables further send and receive operations.</dd></dl></dd></dl><p>The <i>shutdown</i>() function disables subsequent send and/or receive operations on a socket, depending on the value of the<i>how</i> argument.</p></blockquote><h4><a name="tag_03_679_04"></a>RETURN VALUE</h4><blockquote><p>Upon successful completion, <i>shutdown</i>() shall return 0; otherwise, -1 shall be returned and <i>errno</i> set to indicatethe error.</p></blockquote><h4><a name="tag_03_679_05"></a>ERRORS</h4><blockquote><p>The <i>shutdown</i>() function shall fail if:</p><dl compact><dt>[EBADF]</dt><dd>The <i>socket</i> argument is not a valid file descriptor.</dd><dt>[EINVAL]</dt><dd>The <i>how</i> argument is invalid.</dd><dt>[ENOTCONN]</dt><dd>The socket is not connected.</dd><dt>[ENOTSOCK]</dt><dd>The <i>socket</i> argument does not refer to a socket.</dd></dl><p>The <i>shutdown</i>() function may fail if:</p><dl compact><dt>[ENOBUFS]</dt><dd>Insufficient resources were available in the system to perform the operation.</dd></dl></blockquote><hr><div class="box"><em>The following sections are informative.</em></div><h4><a name="tag_03_679_06"></a>EXAMPLES</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_679_07"></a>APPLICATION USAGE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_679_08"></a>RATIONALE</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_679_09"></a>FUTURE DIRECTIONS</h4><blockquote><p>None.</p></blockquote><h4><a name="tag_03_679_10"></a>SEE ALSO</h4><blockquote><p><a href="getsockopt.html"><i>getsockopt</i>()</a> , <a href="read.html"><i>read</i>()</a> , <a href="recv.html"><i>recv</i>()</a> , <a href="recvfrom.html"><i>recvfrom</i>()</a> , <a href="recvmsg.html"><i>recvmsg</i>()</a> , <ahref="select.html"><i>select</i>()</a> , <a href="send.html"><i>send</i>()</a> , <a href="sendto.html"><i>sendto</i>()</a> , <ahref="setsockopt.html"><i>setsockopt</i>()</a> , <a href="socket.html"><i>socket</i>()</a> , <a href="write.html"><i>write</i>()</a> , the Base Definitions volume of IEEE Std 1003.1-2001, <a href="../basedefs/sys/socket.h.html"><i><sys/socket.h></i></a></p></blockquote><h4><a name="tag_03_679_11"></a>CHANGE HISTORY</h4><blockquote><p>First released in Issue 6. Derived from the XNS, Issue 5.2 specification.</p></blockquote><div class="box"><em>End of informative text.</em></div><hr><hr size="2" noshade><center><font size="2"><!--footer start-->UNIX ® is a registered Trademark of The Open Group.<br>POSIX ® is a registered Trademark of The IEEE.<br>[ <a href="../mindex.html">Main Index</a> | <a href="../basedefs/contents.html">XBD</a> | <a href="../utilities/contents.html">XCU</a> | <a href="../functions/contents.html">XSH</a> | <a href="../xrat/contents.html">XRAT</a>]</font></center><!--footer end--><hr size="2" noshade></body></html>⌨️ 快捷键说明
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