117 lines
3.6 KiB
HTML
117 lines
3.6 KiB
HTML
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<!-- Copyright (c) 2001 The Open Group, All Rights Reserved -->
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<title><net/if.h></title>
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<body bgcolor="white">
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<script type="text/javascript" language="JavaScript" src="../../jscript/dotcode.js">
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<basefont size="3"> <a name="<net/if.h>"></a> <a name="tag_13_30"></a><!-- <net/if.h> -->
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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_13_30_01"></a>NAME</h4>
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<blockquote>net/if.h - sockets local interfaces</blockquote>
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<h4><a name="tag_13_30_02"></a>SYNOPSIS</h4>
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<blockquote class="synopsis">
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<p><tt>#include <net/if.h></tt></p>
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</blockquote>
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<h4><a name="tag_13_30_03"></a>DESCRIPTION</h4>
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<blockquote>
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<p>The <i><net/if.h></i> header shall define the <b>if_nameindex</b> structure that includes at least the following
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members:</p>
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<pre>
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<tt>unsigned if_index </tt> Numeric index of the interface. <tt>
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char *if_name </tt> Null-terminated name of the interface. <tt>
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</tt>
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</pre>
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<p>The <i><net/if.h></i> header shall define the following macro for the length of a buffer containing an interface name
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(including the terminating NULL character):</p>
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<dl compact>
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<dt>IF_NAMESIZE</dt>
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<dd>Interface name length.</dd>
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</dl>
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<p>The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.</p>
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<pre>
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<tt>unsigned if_nametoindex(const char *);
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char *if_indextoname(unsigned, char *);
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struct if_nameindex *if_nameindex(void);
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void if_freenameindex(struct if_nameindex *);
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</tt>
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</pre>
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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_13_30_04"></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_13_30_05"></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_13_30_06"></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_13_30_07"></a>SEE ALSO</h4>
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<blockquote>
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<p>The System Interfaces volume of IEEE Std 1003.1-2001, <a href=
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"../../functions/if_freenameindex.html"><i>if_freenameindex</i>()</a>, <a href=
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"../../functions/if_indextoname.html"><i>if_indextoname</i>()</a>, <a href=
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"../../functions/if_nameindex.html"><i>if_nameindex</i>()</a>, <a href=
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"../../functions/if_nametoindex.html"><i>if_nametoindex</i>()</a></p>
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</blockquote>
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<h4><a name="tag_13_30_08"></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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UNIX ® is a registered Trademark of The Open Group.<br>
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POSIX ® is a registered Trademark of The IEEE.<br>
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