#include <mach/mach_types.h>
#include <kern/kern_types.h>
#include <kern/processor.h>
#include <kern/thread.h>
#include <kern/task.h>
#include <kern/spl.h>
#include <kern/lock.h>
#include <kern/ast.h>
#include <ipc/ipc_port.h>
#include <ipc/ipc_object.h>
#include <vm/vm_map.h>
#include <vm/pmap.h>
#include <vm/vm_protos.h>
#undef thread_should_halt
#undef ipc_port_release
task_t bsd_init_task = TASK_NULL;
char init_task_failure_data[1024];
extern unsigned int not_in_kdp;
thread_t get_firstthread(task_t);
int get_task_userstop(task_t);
int get_thread_userstop(thread_t);
boolean_t thread_should_abort(thread_t);
boolean_t current_thread_aborted(void);
void task_act_iterate_wth_args(task_t, void(*)(thread_t, void *), void *);
void ipc_port_release(ipc_port_t);
boolean_t is_thread_active(thread_t);
kern_return_t get_signalact(task_t , thread_t *, int);
int get_vmsubmap_entries(vm_map_t, vm_object_offset_t, vm_object_offset_t);
void *get_bsdtask_info(task_t t)
{
return(t->bsd_info);
}
void set_bsdtask_info(task_t t,void * v)
{
t->bsd_info=v;
}
void *get_bsdthread_info(thread_t th)
{
return(th->uthread);
}
thread_t get_firstthread(task_t task)
{
thread_t thread = (thread_t)queue_first(&task->threads);
if (queue_end(&task->threads, (queue_entry_t)thread))
thread = THREAD_NULL;
if (!task->active)
return (THREAD_NULL);
return (thread);
}
kern_return_t
get_signalact(
task_t task,
thread_t *result_out,
int setast)
{
kern_return_t result = KERN_SUCCESS;
thread_t inc, thread = THREAD_NULL;
task_lock(task);
if (!task->active) {
task_unlock(task);
return (KERN_FAILURE);
}
for (inc = (thread_t)queue_first(&task->threads);
!queue_end(&task->threads, (queue_entry_t)inc); ) {
thread_mtx_lock(inc);
if (inc->active &&
(inc->state & (TH_ABORT|TH_ABORT_SAFELY)) != TH_ABORT) {
thread = inc;
break;
}
thread_mtx_unlock(inc);
inc = (thread_t)queue_next(&inc->task_threads);
}
if (result_out)
*result_out = thread;
if (thread) {
if (setast)
act_set_astbsd(thread);
thread_mtx_unlock(thread);
}
else
result = KERN_FAILURE;
task_unlock(task);
return (result);
}
kern_return_t
check_actforsig(
task_t task,
thread_t thread,
int setast)
{
kern_return_t result = KERN_FAILURE;
thread_t inc;
task_lock(task);
if (!task->active) {
task_unlock(task);
return (KERN_FAILURE);
}
for (inc = (thread_t)queue_first(&task->threads);
!queue_end(&task->threads, (queue_entry_t)inc); ) {
if (inc == thread) {
thread_mtx_lock(inc);
if (inc->active &&
(inc->state & (TH_ABORT|TH_ABORT_SAFELY)) != TH_ABORT) {
result = KERN_SUCCESS;
break;
}
thread_mtx_unlock(inc);
break;
}
inc = (thread_t)queue_next(&inc->task_threads);
}
if (result == KERN_SUCCESS) {
if (setast)
act_set_astbsd(thread);
thread_mtx_unlock(thread);
}
task_unlock(task);
return (result);
}
vm_map_t get_task_map(task_t t)
{
return(t->map);
}
vm_map_t get_task_map_reference(task_t t)
{
vm_map_t m;
if (t == NULL)
return VM_MAP_NULL;
task_lock(t);
if (!t->active) {
task_unlock(t);
return VM_MAP_NULL;
}
m = t->map;
vm_map_reference_swap(m);
task_unlock(t);
return m;
}
ipc_space_t get_task_ipcspace(task_t t)
{
return(t->itk_space);
}
int get_task_numacts(task_t t)
{
return(t->thread_count);
}
int is_64signalregset(void)
{
task_t t = current_task();
if(t->taskFeatures[0] & tf64BitData)
return(1);
else
return(0);
}
vm_map_t
swap_task_map(task_t task,vm_map_t map)
{
thread_t thread = current_thread();
vm_map_t old_map;
if (task != thread->task)
panic("swap_task_map");
task_lock(task);
old_map = task->map;
thread->map = task->map = map;
task_unlock(task);
return old_map;
}
pmap_t get_task_pmap(task_t t)
{
return(t->map->pmap);
}
pmap_t get_map_pmap(vm_map_t map)
{
return(map->pmap);
}
task_t get_threadtask(thread_t th)
{
return(th->task);
}
boolean_t is_thread_idle(thread_t th)
{
return((th->state & TH_IDLE) == TH_IDLE);
}
boolean_t is_thread_running(thread_t th)
{
return((th->state & TH_RUN) == TH_RUN);
}
thread_t
getshuttle_thread(
thread_t th)
{
return(th);
}
thread_t
getact_thread(
thread_t th)
{
return(th);
}
vm_map_offset_t
get_map_min(
vm_map_t map)
{
return(vm_map_min(map));
}
vm_map_offset_t
get_map_max(
vm_map_t map)
{
return(vm_map_max(map));
}
vm_map_size_t
get_vmmap_size(
vm_map_t map)
{
return(map->size);
}
int
get_vmsubmap_entries(
vm_map_t map,
vm_object_offset_t start,
vm_object_offset_t end)
{
int total_entries = 0;
vm_map_entry_t entry;
if (not_in_kdp)
vm_map_lock(map);
entry = vm_map_first_entry(map);
while((entry != vm_map_to_entry(map)) && (entry->vme_start < start)) {
entry = entry->vme_next;
}
while((entry != vm_map_to_entry(map)) && (entry->vme_start < end)) {
if(entry->is_sub_map) {
total_entries +=
get_vmsubmap_entries(entry->object.sub_map,
entry->offset,
entry->offset +
(entry->vme_end - entry->vme_start));
} else {
total_entries += 1;
}
entry = entry->vme_next;
}
if (not_in_kdp)
vm_map_unlock(map);
return(total_entries);
}
int
get_vmmap_entries(
vm_map_t map)
{
int total_entries = 0;
vm_map_entry_t entry;
if (not_in_kdp)
vm_map_lock(map);
entry = vm_map_first_entry(map);
while(entry != vm_map_to_entry(map)) {
if(entry->is_sub_map) {
total_entries +=
get_vmsubmap_entries(entry->object.sub_map,
entry->offset,
entry->offset +
(entry->vme_end - entry->vme_start));
} else {
total_entries += 1;
}
entry = entry->vme_next;
}
if (not_in_kdp)
vm_map_unlock(map);
return(total_entries);
}
int
get_task_userstop(
task_t task)
{
return(task->user_stop_count);
}
int
get_thread_userstop(
thread_t th)
{
return(th->user_stop_count);
}
boolean_t
thread_should_abort(
thread_t th)
{
return ((th->state & (TH_ABORT|TH_ABORT_SAFELY)) == TH_ABORT);
}
boolean_t
current_thread_aborted (
void)
{
thread_t th = current_thread();
spl_t s;
if ((th->state & (TH_ABORT|TH_ABORT_SAFELY)) == TH_ABORT &&
(th->options & TH_OPT_INTMASK) != THREAD_UNINT)
return (TRUE);
if (th->state & TH_ABORT_SAFELY) {
s = splsched();
thread_lock(th);
if (th->state & TH_ABORT_SAFELY)
th->state &= ~(TH_ABORT|TH_ABORT_SAFELY);
thread_unlock(th);
splx(s);
}
return FALSE;
}
void
task_act_iterate_wth_args(
task_t task,
void (*func_callback)(thread_t, void *),
void *func_arg)
{
thread_t inc;
task_lock(task);
for (inc = (thread_t)queue_first(&task->threads);
!queue_end(&task->threads, (queue_entry_t)inc); ) {
(void) (*func_callback)(inc, func_arg);
inc = (thread_t)queue_next(&inc->task_threads);
}
task_unlock(task);
}
void
ipc_port_release(
ipc_port_t port)
{
ipc_object_release(&(port)->ip_object);
}
boolean_t
is_thread_active(
thread_t th)
{
return(th->active);
}
void
astbsd_on(void)
{
boolean_t reenable;
reenable = ml_set_interrupts_enabled(FALSE);
ast_on_fast(AST_BSD);
(void)ml_set_interrupts_enabled(reenable);
}