| 9bccf70c |
1 | <h2>task_set_emulation_vector</h2>\r<hr>\r<p>\r<strong>Function</strong> - Establish the target task's user-level system call handlers. \r<h3>SYNOPSIS</h3>\r<pre>\r<strong>kern_return_t task_set_emulation_vector</strong>\r <strong>(task_t</strong> <var>task</var>,\r <strong>int</strong> <var>vector_start</var>,\r <strong>emulation_vector_t</strong> <var>emulation_vector</var>,\r <strong>mach_msg_type_number_t</strong> <var>emulation_vector_count</var><strong>);</strong>\r</pre>\r<h3>PARAMETERS</h3>\r<dl>\r<p>\r<dt> <var>task</var> \r<dd>\r[in task send right]\rThe port for the task for which to establish the\rsystem call handler.\r<p>\r<dt> <var>vector_start</var> \r<dd>\r[in scalar]\rThe syscall number corresponding to the first element of\r<var>emulation_vector</var>.\r<p>\r<dt> <var>emulation_vector</var> \r<dd>\r[pointer to in array of <strong>vm_address_t</strong>]\rAn array of routine entrypoints \rfor the system calls starting with syscall number <var>vector_start</var>.\r<p>\r<dt> <var>emulation_vector_count</var> \r<dd>\r[in scalar]\rThe number of elements in <var>emulation_vector</var>.\r</dl>\r<h3>DESCRIPTION</h3>\r<p>\rThe <strong>task_set_emulation_vector</strong> function establishes\ra handler within the task \rfor a set of system calls. When a thread executes a system call\rwith one of these \rnumbers, the system call will be redirected to the corresponding\rroutine within \rthe task's address space.\r<p>\rThese emulation handler addresses are inherited by child processes.\r<h3>NOTES</h3>\r<p>\rThis interface is machine word length specific because of the\rvirtual addresses \rin the <var>emulation_vector</var> parameter.\r<h3>RETURN VALUES</h3>\r<p>\rOnly generic errors apply.\r<h3>RELATED INFORMATION</h3>\r<p>\rFunctions:\r<a href="task_get_emulation_vector.html"><strong>task_get_emulation_vector</strong></a>.\r |
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