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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>function::set_kernel_char</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1"><link rel="start" href="index.html" title="SystemTap Tapset Reference Manual"><link rel="up" href="ch25.html" title="Chapter&#160;25.&#160;String and data writing functions Tapset"><link rel="prev" href="ch25.html" title="Chapter&#160;25.&#160;String and data writing functions Tapset"><link rel="next" href="re459.html" title="function::set_kernel_int"></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::set_kernel_char</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch25.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;25.&#160;String and data writing functions Tapset</th><td width="20%" align="right">&#160;<a accesskey="n" href="re459.html">Next</a></td></tr></table><hr></div><div class="refentry" lang="en"><a name="API-set-kernel-char"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>function::set_kernel_char &#8212; 
     Writes a char value to kernel memory
 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting">
    set_kernel_char(addr:long,val:long)
</pre></div><div class="refsect1" lang="en"><a name="idp11679680"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>addr</code></em></span></dt><dd><p>
     The kernel address to write the char to
    </p></dd><dt><span class="term"><em class="parameter"><code>val</code></em></span></dt><dd><p>
     The char which is to be written
    </p></dd></dl></div></div><div class="refsect1" lang="en"><a name="idp11684944"></a><h2>Description</h2><p>
   Writes the char value to a given kernel memory address.
   Reports an error when writing to the given address fails.
   Requires the use of guru mode (-g).
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