osfmk/man/i386_io_port_list.html

   1 <h2>i386_io_port_list</h2>
   2 <hr>
   3 <p>
   4 <strong>Function</strong> - List the devices that permit target thread to invoke operations.
   5 <h3>SYNOPSIS</h3>
   6 <pre>
   7 <strong>kern_return_t   i386_io_port_list</strong>
   8                 <strong>(thread_act_t</strong>                        <var>target_act</var>,
   9                  <strong>device_list_t</strong>                      <var>device_list</var><strong>);</strong>
  10 </pre>
  11 <h3>PARAMETERS</h3>
  12 <dl>
  13 <p>
  14 <dt> <var>target_act</var>
  15 <dd>
  16 [in thread send right]
  17 Thread whose permission list is to be returned.
  18 <p>
  19 <dt> <var>device_list</var>
  20 <dd>
  21 [out pointer to dynamic array of device send rights]
  22 Device ports
  23 permitting I/O.
  24 </dl>
  25 <h3>DESCRIPTION</h3>
  26 <p>
  27 The <strong>i386_io_port_list</strong> function returns a list of the
  28 devices named in the
  29 thread's I/O permission bitmap, namely those permitting I/O instructions to be
  30 executed against them.
  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_remove.html"><strong>i386_io_port_remove<strong></a>.