xnu-2422.1.72.tar.gz

[apple/xnu.git] / osfmk / man / i386_io_port_remove.html

<h2>i386_io_port_remove</h2>
<hr>
<p>
<strong>Function</strong> - Disable target thread's ability to invoke operations on the
specified device.
<h3>SYNOPSIS</h3>
<pre>
<strong>kern_return_t   i386_io_port_remove</strong>
                <strong>(thread_act_t</strong>                        <var>target_act</var>,
                 <strong>device_t</strong>                                <var>device</var><strong>);</strong>
</pre>
<h3>PARAMETERS</h3>
<dl>
<p>
<dt> <var>target_act</var> 
<dd>
[in thread send right]
Thread whose permission bitmap is to be cleared
<p>
<dt> <var>device</var> 
<dd>
[in device send right]
Device whose permission is to be revoked
</dl>
<h3>DESCRIPTION</h3>
<p>
The <strong>i386_io_port_remove</strong> function removes the specified
device from the 
thread's I/O permission bitmap, thereby prohibiting I/O instructions being
executed against the device.
<h3>RETURN VALUES</h3>
<p>
Only generic errors apply.
<h3>RELATED INFORMATION</h3>
<p>
Functions:
<a href="i386_io_port_add.html"><strong>i386_io_port_add<strong></a>,
<a href="i386_io_port_list.html"><strong>i386_io_port_list<strong></a>.