xref: /xnu-8792.81.2/osfmk/man/task_set_emulation_vector.html (revision 19c3b8c28c31cb8130e034cfb5df6bf9ba342d90)
1*19c3b8c2SApple OSS Distributions<h2>task_set_emulation_vector</h2>
2*19c3b8c2SApple OSS Distributions<hr>
3*19c3b8c2SApple OSS Distributions<p>
4*19c3b8c2SApple OSS Distributions<strong>Function</strong> - Establish the target task's user-level system call handlers.
5*19c3b8c2SApple OSS Distributions<h3>SYNOPSIS</h3>
6*19c3b8c2SApple OSS Distributions<pre>
7*19c3b8c2SApple OSS Distributions<strong>kern_return_t   task_set_emulation_vector</strong>
8*19c3b8c2SApple OSS Distributions                <strong>(task_t</strong>                                    <var>task</var>,
9*19c3b8c2SApple OSS Distributions                 <strong>int</strong>                               <var>vector_start</var>,
10*19c3b8c2SApple OSS Distributions                 <strong>emulation_vector_t</strong>            <var>emulation_vector</var>,
11*19c3b8c2SApple OSS Distributions                 <strong>mach_msg_type_number_t</strong>  <var>emulation_vector_count</var><strong>);</strong>
12*19c3b8c2SApple OSS Distributions</pre>
13*19c3b8c2SApple OSS Distributions<h3>PARAMETERS</h3>
14*19c3b8c2SApple OSS Distributions<dl>
15*19c3b8c2SApple OSS Distributions<p>
16*19c3b8c2SApple OSS Distributions<dt> <var>task</var>
17*19c3b8c2SApple OSS Distributions<dd>
18*19c3b8c2SApple OSS Distributions[in task send right]
19*19c3b8c2SApple OSS DistributionsThe port for the task for which to establish the
20*19c3b8c2SApple OSS Distributionssystem call handler.
21*19c3b8c2SApple OSS Distributions<p>
22*19c3b8c2SApple OSS Distributions<dt> <var>vector_start</var>
23*19c3b8c2SApple OSS Distributions<dd>
24*19c3b8c2SApple OSS Distributions[in scalar]
25*19c3b8c2SApple OSS DistributionsThe syscall number corresponding to the first element of
26*19c3b8c2SApple OSS Distributions<var>emulation_vector</var>.
27*19c3b8c2SApple OSS Distributions<p>
28*19c3b8c2SApple OSS Distributions<dt> <var>emulation_vector</var>
29*19c3b8c2SApple OSS Distributions<dd>
30*19c3b8c2SApple OSS Distributions[pointer to in array of <strong>vm_address_t</strong>]
31*19c3b8c2SApple OSS DistributionsAn array of routine entrypoints
32*19c3b8c2SApple OSS Distributionsfor the system calls starting with syscall number <var>vector_start</var>.
33*19c3b8c2SApple OSS Distributions<p>
34*19c3b8c2SApple OSS Distributions<dt> <var>emulation_vector_count</var>
35*19c3b8c2SApple OSS Distributions<dd>
36*19c3b8c2SApple OSS Distributions[in scalar]
37*19c3b8c2SApple OSS DistributionsThe number of elements in <var>emulation_vector</var>.
38*19c3b8c2SApple OSS Distributions</dl>
39*19c3b8c2SApple OSS Distributions<h3>DESCRIPTION</h3>
40*19c3b8c2SApple OSS Distributions<p>
41*19c3b8c2SApple OSS DistributionsThe <strong>task_set_emulation_vector</strong> function establishes
42*19c3b8c2SApple OSS Distributionsa handler within the task
43*19c3b8c2SApple OSS Distributionsfor a set of system calls.  When a thread executes a system call
44*19c3b8c2SApple OSS Distributionswith one of these
45*19c3b8c2SApple OSS Distributionsnumbers, the system call will be redirected to the corresponding
46*19c3b8c2SApple OSS Distributionsroutine within
47*19c3b8c2SApple OSS Distributionsthe task's address space.
48*19c3b8c2SApple OSS Distributions<p>
49*19c3b8c2SApple OSS DistributionsThese emulation handler addresses are inherited by child processes.
50*19c3b8c2SApple OSS Distributions<h3>NOTES</h3>
51*19c3b8c2SApple OSS Distributions<p>
52*19c3b8c2SApple OSS DistributionsThis interface is machine word length specific because of the
53*19c3b8c2SApple OSS Distributionsvirtual addresses
54*19c3b8c2SApple OSS Distributionsin the <var>emulation_vector</var> parameter.
55*19c3b8c2SApple OSS Distributions<h3>RETURN VALUES</h3>
56*19c3b8c2SApple OSS Distributions<p>
57*19c3b8c2SApple OSS DistributionsOnly generic errors apply.
58*19c3b8c2SApple OSS Distributions<h3>RELATED INFORMATION</h3>
59*19c3b8c2SApple OSS Distributions<p>
60*19c3b8c2SApple OSS DistributionsFunctions:
61*19c3b8c2SApple OSS Distributions<a href="task_get_emulation_vector.html"><strong>task_get_emulation_vector</strong></a>.
62