1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>xdr_restrict_buflen</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux Networking and Network Devices APIs"><link rel="up" href="ch01s05.html" title="SUN RPC subsystem"><link rel="prev" href="API-xdr-truncate-encode.html" title="xdr_truncate_encode"><link rel="next" href="API-xdr-write-pages.html" title="xdr_write_pages"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">xdr_restrict_buflen</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-xdr-truncate-encode.html">Prev</a>&#160;</td><th width="60%" align="center">SUN RPC subsystem</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-xdr-write-pages.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-xdr-restrict-buflen"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>xdr_restrict_buflen &#8212; 
2     decrease available buffer space
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">xdr_restrict_buflen </b>(</code></td><td>struct xdr_stream * <var class="pdparam">xdr</var>, </td></tr><tr><td>&#160;</td><td>int <var class="pdparam">newbuflen</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1096946332"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>xdr</code></em></span></dt><dd><p>
4     pointer to xdr_stream
5    </p></dd><dt><span class="term"><em class="parameter"><code>newbuflen</code></em></span></dt><dd><p>
6     new maximum number of bytes available
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1096948972"></a><h2>Description</h2><p>
8   Adjust our idea of how much space is available in the buffer.
9   If we've already used too much space in the buffer, returns -1.
10   If the available space is already smaller than newbuflen, returns 0
11   and does nothing.  Otherwise, adjusts xdr-&gt;buf-&gt;buflen to newbuflen
12   and ensures xdr-&gt;end is set at most offset newbuflen from the start
13   of the buffer.
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