1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>get_option</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="The Linux Kernel API"><link rel="up" href="ch03s02.html" title="Command-line Parsing"><link rel="prev" href="ch03s02.html" title="Command-line Parsing"><link rel="next" href="API-get-options.html" title="get_options"></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">get_option</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch03s02.html">Prev</a>&#160;</td><th width="60%" align="center">Command-line Parsing</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-get-options.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-get-option"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>get_option &#8212; 
2  Parse integer from an option string
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">get_option </b>(</code></td><td>char ** <var class="pdparam">str</var>, </td></tr><tr><td>&#160;</td><td>int * <var class="pdparam">pint</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1123490644"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>str</code></em></span></dt><dd><p>
4     option string
5    </p></dd><dt><span class="term"><em class="parameter"><code>pint</code></em></span></dt><dd><p>
6     (output) integer value parsed from <em class="parameter"><code>str</code></em>
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1123493596"></a><h2>Description</h2><p>
8   Read an int from an option string; if available accept a subsequent
9   comma as well.
10</p></div><div class="refsect1"><a name="idp1123494284"></a><h2>Return values</h2><p>
11   0 - no int in string
12   1 - int found, no subsequent comma
13   2 - int found including a subsequent comma
14   3 - hyphen found to denote a range
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