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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>function::returnstr</title><meta name="generator" content="DocBook XSL Stylesheets V1.76.1"><link rel="home" href="index.html" title="SystemTap Tapset Reference Manual"><link rel="up" href="errno.stp.html" title="Chapter&#160;18.&#160;Errno Tapset"><link rel="prev" href="API-return-str.html" title="function::return_str"><link rel="next" href="API-returnval.html" title="function::returnval"></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>function::returnstr</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-return-str.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;18.&#160;Errno Tapset</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-returnval.html">Next</a></td></tr></table><hr></div><div class="refentry" title="function::returnstr"><a name="API-returnstr"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>function::returnstr &#8212; 
     Formats the return value as a string
 </p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><pre class="programlisting">
    returnstr:string(format:long)
</pre></div><div class="refsect1" title="Arguments"><a name="idp6117368"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>format</code></em></span></dt><dd><p>
     Variable to determine return type base value
    </p></dd></dl></div></div><div class="refsect1" title="Description"><a name="idp6119008"></a><h2>Description</h2><p>
   This function is used by the nd_syscall tapset, and 
   returns a string. Set format equal to 1 for a decimal, 
   2 for hex, 3 for octal.
   </p><p>

   Note that this function should only be used in dwarfless probes
   (i.e. 'kprobe.function(<span class="quote">&#8220;<span class="quote">foo</span>&#8221;</span>)').  Other probes should use
   <code class="function">return_str</code>.
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