void
bsd_utaskbootstrap(void)
{
thread_t thread;
struct uthread *ut;
/*
* Clone the bootstrap process from the kernel process, without
* inheriting either task characteristics or memory from the kernel;
*/
thread = cloneproc(TASK_NULL, COALITION_NULL, kernproc, FALSE, TRUE);
/* Hold the reference as it will be dropped during shutdown */
initproc = proc_find(1);
#if __PROC_INTERNAL_DEBUG
if (initproc == PROC_NULL)
panic("bsd_utaskbootstrap: initproc not set\n");
#endif
/*
* Since we aren't going back out the normal way to our parent,
* we have to drop the transition locks explicitly.
*/
proc_signalend(initproc, 0);
proc_transend(initproc, 0);
ut = (struct uthread *)get_bsdthread_info(thread);
ut->uu_sigmask = 0;
act_set_astbsd(thread);
proc_clear_return_wait(initproc, thread);
}
kern_return_t check_actforsig(task_t task, thread_act_t thact, int setast)
{
thread_act_t inc;
thread_act_t ninc;
thread_act_t thr_act;
thread_t th;
int found=0;
task_lock(task);
if (!task->active) {
task_unlock(task);
return(KERN_FAILURE);
}
thr_act = THR_ACT_NULL;
for (inc = (thread_act_t)queue_first(&task->threads);
!queue_end(&task->threads, (queue_entry_t)inc);
inc = ninc) {
if (inc != thact) {
ninc = (thread_act_t)queue_next(&inc->task_threads);
continue;
}
th = act_lock_thread(inc);
if ((inc->active) &&
((th->state & (TH_ABORT|TH_ABORT_SAFELY)) != TH_ABORT)) {
found = 1;
thr_act = inc;
break;
}
act_unlock_thread(inc);
/* ninc = (thread_act_t)queue_next(&inc->thr_acts); */
break;
}
out:
if (found) {
if (setast)
act_set_astbsd(thr_act);
act_unlock_thread(thr_act);
}
task_unlock(task);
if (found)
return(KERN_SUCCESS);
else
return(KERN_FAILURE);
}
kern_return_t get_signalact(task_t task,thread_act_t * thact, int setast)
{
thread_act_t inc;
thread_act_t ninc;
thread_act_t thr_act;
thread_t th;
task_lock(task);
if (!task->active) {
task_unlock(task);
return(KERN_FAILURE);
}
thr_act = THR_ACT_NULL;
for (inc = (thread_act_t)queue_first(&task->threads);
!queue_end(&task->threads, (queue_entry_t)inc);
inc = ninc) {
th = act_lock_thread(inc);
if ((inc->active) &&
((th->state & (TH_ABORT|TH_ABORT_SAFELY)) != TH_ABORT)) {
thr_act = inc;
break;
}
act_unlock_thread(inc);
ninc = (thread_act_t)queue_next(&inc->task_threads);
}
out:
if (thact)
*thact = thr_act;
if (thr_act) {
if (setast)
act_set_astbsd(thr_act);
act_unlock_thread(thr_act);
}
task_unlock(task);
if (thr_act)
return(KERN_SUCCESS);
else
return(KERN_FAILURE);
}
