osfmk/man/i386_io_port_remove.html

   1 <h2>i386_io_port_remove</h2>
   2 <hr>
   3 <p>
   4 <strong>Function</strong> - Disable target thread's ability to invoke operations on the
   5 specified device.
   6 <h3>SYNOPSIS</h3>
   7 <pre>
   8 <strong>kern_return_t   i386_io_port_remove</strong>
   9                 <strong>(thread_act_t</strong>                        <var>target_act</var>,
  10                  <strong>device_t</strong>                                <var>device</var><strong>);</strong>
  11 </pre>
  12 <h3>PARAMETERS</h3>
  13 <dl>
  14 <p>
  15 <dt> <var>target_act</var>
  16 <dd>
  17 [in thread send right]
  18 Thread whose permission bitmap is to be cleared
  19 <p>
  20 <dt> <var>device</var>
  21 <dd>
  22 [in device send right]
  23 Device whose permission is to be revoked
  24 </dl>
  25 <h3>DESCRIPTION</h3>
  26 <p>
  27 The <strong>i386_io_port_remove</strong> function removes the specified
  28 device from the
  29 thread's I/O permission bitmap, thereby prohibiting I/O instructions being
  30 executed against the device.
  31 <h3>RETURN VALUES</h3>
  32 <p>
  33 Only generic errors apply.
  34 <h3>RELATED INFORMATION</h3>
  35 <p>
  36 Functions:
  37 <a href="i386_io_port_add.html"><strong>i386_io_port_add<strong></a>,
  38 <a href="i386_io_port_list.html"><strong>i386_io_port_list<strong></a>.