osfmk/man/mach_ports_lookup.html

   1 <h2>mach_ports_lookup</h2>
<hr>
<p>
<strong>Function</strong> - Provide caller with an array of the target task's well-known ports.
<h3>SYNOPSIS</h3>
<pre>
<strong>kern_return_t   mach_ports_lookup</strong>
                <strong>(task_t</strong>                             <var>target_task</var>,
                 <strong>mach_port_array_t</strong>                <var>init_port_set</var>,
                 <strong>mach_msg_type_number_t</strong>         <var>init_port_count</var><strong>);</strong>
</pre>
<h3>PARAMETERS</h3>
<dl>
<p>
<dt> <var>target_task</var> 
<dd>
[in task send right]
The task whose currently registered ports are to be 
returned.
<p>
<dt> <var>init_port_set</var> 
<dd>
[out pointer to dynamic array of registered send rights]
The returned
array of ports.
<p>
<dt> <var>init_port_count</var> 
<dd>
[out scalar]
The number of returned port rights.
</dl>
<h3>DESCRIPTION</h3>
<p>
The <strong>mach_ports_lookup</strong> function returns an array of
the well-known system 
ports that are currently registered for the specified task. 
Note that the task holds 
only send rights for the ports.
<p>
Registered ports are those ports that are used by the run-time
system to initialize a task.  To register system ports for a task, 
use the <strong>mach_ports_register</strong> function.
<h3>RETURN VALUES</h3>
<p>
Only generic errors apply.
<h3>RELATED INFORMATION</h3>
<p>
Functions:
<a href="mach_ports_register.html"><strong>mach_ports_register</strong></a>.