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1 2 3 4 5 6 7 8 9 10 11 12 | <html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>function::user_string_warn</title><meta name="generator" content="DocBook XSL Stylesheets V1.79.1"><link rel="home" href="index.html" title="SystemTap Tapset Reference Manual"><link rel="up" href="conversions.stp.html" title="Chapter 25. String and data retrieving functions Tapset"><link rel="prev" href="API-user-string-utf32.html" title="function::user_string_utf32"><link rel="next" href="API-user-uint16.html" title="function::user_uint16"></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">function::user_string_warn</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-user-string-utf32.html">Prev</a> </td><th width="60%" align="center">Chapter 25. String and data retrieving functions Tapset</th><td width="20%" align="right"> <a accesskey="n" href="API-user-uint16.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-user-string-warn"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>function::user_string_warn —
Retrieves string from user space
</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting">1) user_string_warn:string(addr:long)</pre><pre class="programlisting">2) user_string_warn:string(addr:long,warn_msg:string)</pre></div><div class="refsect1"><a name="idm19153"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>addr</code></em></span></dt><dd><p>
the user space address to retrieve the string from
</p></dd><dt><span class="term"><em class="parameter"><code>warn_msg</code></em></span></dt><dd><p>
the warning message to return when data isn't available
</p></dd></dl></div></div><div class="refsect1"><a name="idm19166"></a><h2>Description</h2><p>1) Returns the null terminated C string from a given user space
memory address. Reports "" on the rare cases when userspace data is
not accessible and warns (but does not abort) about the failure.</p><p>2) Returns the null terminated C string from a given user space
memory address. Reports the given warning message on the rare cases
when userspace data is not accessible and warns (but does not abort)
about the failure.</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-user-string-utf32.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="conversions.stp.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-user-uint16.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">function::user_string_utf32</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span class="phrase">function::user_uint16</span></td></tr></table></div></body></html>
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