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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<div class="title">poll_client.c File Reference</div>  </div>
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<div class="textblock"><code>#include &lt;fuse_config.h&gt;</code><br />
<code>#include &lt;sys/select.h&gt;</code><br />
<code>#include &lt;sys/time.h&gt;</code><br />
<code>#include &lt;sys/types.h&gt;</code><br />
<code>#include &lt;sys/stat.h&gt;</code><br />
<code>#include &lt;fcntl.h&gt;</code><br />
<code>#include &lt;unistd.h&gt;</code><br />
<code>#include &lt;ctype.h&gt;</code><br />
<code>#include &lt;stdio.h&gt;</code><br />
<code>#include &lt;stdlib.h&gt;</code><br />
<code>#include &lt;errno.h&gt;</code><br />
</div>
<p><a href="example_2poll__client_8c_source.html">Go to the source code of this file.</a></p>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>This program tests the poll.c example file systsem.</p>
<p>Compile with: </p><pre class="fragment"> gcc -Wall poll_client.c -o poll_client
</pre> <h2><a class="anchor" id="autotoc_md23"></a>
Source code</h2>
<div class="fragment"><div class="line"><span class="comment">/*</span></div>
<div class="line"><span class="comment">  FUSE fselclient: FUSE select example client</span></div>
<div class="line"><span class="comment">  Copyright (C) 2008       SUSE Linux Products GmbH</span></div>
<div class="line"><span class="comment">  Copyright (C) 2008       Tejun Heo &lt;teheo@suse.de&gt;</span></div>
<div class="line"><span class="comment"></span> </div>
<div class="line"><span class="comment">  This program can be distributed under the terms of the GNU GPLv2.</span></div>
<div class="line"><span class="comment">  See the file COPYING.</span></div>
<div class="line"><span class="comment">*/</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#include &lt;fuse_config.h&gt;</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#include &lt;sys/select.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;sys/time.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;sys/types.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;sys/stat.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;fcntl.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;unistd.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;ctype.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;stdlib.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;errno.h&gt;</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#define FSEL_FILES      16</span></div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">int</span> main(<span class="keywordtype">void</span>)</div>
<div class="line">{</div>
<div class="line">        <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> hex_map[FSEL_FILES] = <span class="stringliteral">&quot;0123456789ABCDEF&quot;</span>;</div>
<div class="line">        <span class="keywordtype">int</span> fds[FSEL_FILES];</div>
<div class="line">        <span class="keywordtype">int</span> i, nfds, tries;</div>
<div class="line"> </div>
<div class="line">        <span class="keywordflow">for</span> (i = 0; i &lt; FSEL_FILES; i++) {</div>
<div class="line">                <span class="keywordtype">char</span> name[] = { hex_map[i], <span class="charliteral">&#39;\0&#39;</span> };</div>
<div class="line">                fds[i] = open(name, O_RDONLY);</div>
<div class="line">                <span class="keywordflow">if</span> (fds[i] &lt; 0) {</div>
<div class="line">                        perror(<span class="stringliteral">&quot;open&quot;</span>);</div>
<div class="line">                        <span class="keywordflow">return</span> 1;</div>
<div class="line">                }</div>
<div class="line">        }</div>
<div class="line">        nfds = fds[FSEL_FILES - 1] + 1;</div>
<div class="line"> </div>
<div class="line">        <span class="keywordflow">for</span>(tries=0; tries &lt; 16; tries++) {</div>
<div class="line">                <span class="keyword">static</span> <span class="keywordtype">char</span> buf[4096];</div>
<div class="line">                fd_set rfds;</div>
<div class="line">                <span class="keywordtype">int</span> rc;</div>
<div class="line"> </div>
<div class="line">                FD_ZERO(&amp;rfds);</div>
<div class="line">                <span class="keywordflow">for</span> (i = 0; i &lt; FSEL_FILES; i++)</div>
<div class="line">                        FD_SET(fds[i], &amp;rfds);</div>
<div class="line"> </div>
<div class="line">                rc = select(nfds, &amp;rfds, NULL, NULL, NULL);</div>
<div class="line"> </div>
<div class="line">                <span class="keywordflow">if</span> (rc &lt; 0) {</div>
<div class="line">                        perror(<span class="stringliteral">&quot;select&quot;</span>);</div>
<div class="line">                        <span class="keywordflow">return</span> 1;</div>
<div class="line">                }</div>
<div class="line"> </div>
<div class="line">                <span class="keywordflow">for</span> (i = 0; i &lt; FSEL_FILES; i++) {</div>
<div class="line">                        <span class="keywordflow">if</span> (!FD_ISSET(fds[i], &amp;rfds)) {</div>
<div class="line">                                printf(<span class="stringliteral">&quot;_:   &quot;</span>);</div>
<div class="line">                                <span class="keywordflow">continue</span>;</div>
<div class="line">                        }</div>
<div class="line">                        printf(<span class="stringliteral">&quot;%X:&quot;</span>, i);</div>
<div class="line">                        rc = read(fds[i], buf, <span class="keyword">sizeof</span>(buf));</div>
<div class="line">                        <span class="keywordflow">if</span> (rc &lt; 0) {</div>
<div class="line">                                perror(<span class="stringliteral">&quot;read&quot;</span>);</div>
<div class="line">                                <span class="keywordflow">return</span> 1;</div>
<div class="line">                        }</div>
<div class="line">                        printf(<span class="stringliteral">&quot;%02d &quot;</span>, rc);</div>
<div class="line">                }</div>
<div class="line">                printf(<span class="stringliteral">&quot;\n&quot;</span>);</div>
<div class="line">        }</div>
<div class="line">        <span class="keywordflow">return</span> 0;</div>
<div class="line">}</div>
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<p class="definition">Definition in file <a class="el" href="example_2poll__client_8c_source.html">poll_client.c</a>.</p>
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