osfmk/man/mach_port_set_attributes.html

   1 <h2>mach_port_set_attributes</h2>
<hr>
<p>
<strong>Function</strong> - Set the target port's attributes.
<h3>SYNOPSIS</h3>
<pre>
<strong>kern_return_t   mach_port_set_attributes</strong>
                <strong>(ipc_space_t</strong>                               <var>task</var>,
                 <strong>mach_port_name_t</strong>                          <var>name</var>,
                 <strong>mach_port_flavor_t</strong>                      <var>flavor</var>,
                 <strong>mach_port_info_t</strong>                     <var>port_info</var>,
                 <strong>mach_msg_type_number_t</strong>         <var>port_info_count</var><strong>);</strong>
</pre>
<h3>PARAMETERS</h3>
<dl>
<p>
<dt> <var>task</var> 
<dd>
[in task send right]
The task holding a receive right to the port in
question.
<p>
<dt> <var>name</var> 
<dd>
[in scalar]
<var>task</var>'s name for the port.
<p>
<dt> <var>flavor</var> 
<dd>
[in scalar]
The type of attributes to be set.  Valid values are:
<dl>
<p>
<dt> <strong>MACH_PORT_LIMITS_INFO</strong>
<dd>
Sets resource limits (queue limits) for the port.  The declaration 
of this data is found in structure <strong>mach_port_limits</strong>.
</dl>
<p>
<dt> <var>port_info</var> 
<dd>
[pointer to in structure]
Attributes for the specified port.
<p>
<dt> <var>port_info_count</var> 
<dd>
[in scalar]
The size of the buffer (in natural-sized units).
</dl>
</dl>
<h3>DESCRIPTION</h3>
<p>
The <strong>mach_port_set_attributes</strong> function sets attributes of type 
<var>flavor</var>.
<h3>NOTES</h3>
<p>
This interface is machine word length specific because of the port name
parameter.
<h3>RETURN VALUES</h3>
<dl>
<p>
<dt> <strong>KERN_INVALID_NAME</strong>
<dd>
<var>name</var> did not denote a right.
<p>
<dt> <strong>KERN_INVALID_RIGHT</strong>
<dd>
<var>name</var> denoted a right, but not a receive right.
</dl>
<h3>RELATED INFORMATION</h3>
<p>
Functions:
<a href="mach_port_allocate.html"><strong>mach_port_allocate</strong></a>,
<a href="mach_port_allocate_name.html"><strong>mach_port_allocate_name</strong></a>,
<a href="mach_port_get_attributes.html"><strong>mach_port_get_attributes</strong></a>.
<p>
Data Structures:
<a href="mach_port_limits.html"><strong>mach_port_limits</strong></a>.