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-<refentry id="func-ioctl">
-  <refmeta>
-    <refentrytitle>V4L2 ioctl()</refentrytitle>
-    &manvol;
-  </refmeta>
-
-  <refnamediv>
-    <refname>v4l2-ioctl</refname>
-    <refpurpose>Program a V4L2 device</refpurpose>
-  </refnamediv>
-
-  <refsynopsisdiv>
-    <funcsynopsis>
-      <funcsynopsisinfo>#include &lt;sys/ioctl.h&gt;</funcsynopsisinfo>
-      <funcprototype>
-	<funcdef>int <function>ioctl</function></funcdef>
-	<paramdef>int <parameter>fd</parameter></paramdef>
-	<paramdef>int <parameter>request</parameter></paramdef>
-	<paramdef>void *<parameter>argp</parameter></paramdef>
-      </funcprototype>
-    </funcsynopsis>
-  </refsynopsisdiv>
-
-  <refsect1>
-    <title>Arguments</title>
-
-    <variablelist>
-      <varlistentry>
-	<term><parameter>fd</parameter></term>
-	<listitem>
-	  <para>&fd;</para>
-	</listitem>
-      </varlistentry>
-      <varlistentry>
-	<term><parameter>request</parameter></term>
-	<listitem>
-	  <para>V4L2 ioctl request code as defined in the <filename>videodev2.h</filename> header file, for example
-VIDIOC_QUERYCAP.</para>
-	</listitem>
-      </varlistentry>
-      <varlistentry>
-	<term><parameter>argp</parameter></term>
-	<listitem>
-	  <para>Pointer to a function parameter, usually a structure.</para>
-	</listitem>
-      </varlistentry>
-    </variablelist>
-  </refsect1>
-
-  <refsect1>
-    <title>Description</title>
-
-    <para>The <function>ioctl()</function> function is used to program
-V4L2 devices. The argument <parameter>fd</parameter> must be an open
-file descriptor. An ioctl <parameter>request</parameter> has encoded
-in it whether the argument is an input, output or read/write
-parameter, and the size of the argument <parameter>argp</parameter> in
-bytes. Macros and defines specifying V4L2 ioctl requests are located
-in the <filename>videodev2.h</filename> header file.
-Applications should use their own copy, not include the version in the
-kernel sources on the system they compile on. All V4L2 ioctl requests,
-their respective function and parameters are specified in <xref
-	linkend="user-func" />.</para>
-  </refsect1>
-
-  <refsect1>
-    &return-value;
-    <para>When an ioctl that takes an output or read/write parameter fails,
-    the parameter remains unmodified.</para>
-  </refsect1>
-</refentry>