#include <mach_kdb.h>
#include <fast_tas.h>
#include <platforms.h>
#include <mach/mach_types.h>
#include <mach/boolean.h>
#include <mach/host_priv.h>
#include <mach/machine/vm_types.h>
#include <mach/vm_param.h>
#include <mach/semaphore.h>
#include <mach/task_info.h>
#include <mach/task_special_ports.h>
#include <ipc/ipc_types.h>
#include <ipc/ipc_space.h>
#include <ipc/ipc_entry.h>
#include <kern/kern_types.h>
#include <kern/mach_param.h>
#include <kern/misc_protos.h>
#include <kern/task.h>
#include <kern/thread.h>
#include <kern/zalloc.h>
#include <kern/kalloc.h>
#include <kern/processor.h>
#include <kern/sched_prim.h>
#include <kern/ipc_tt.h>
#include <kern/ledger.h>
#include <kern/host.h>
#include <kern/clock.h>
#include <kern/timer.h>
#include <kern/assert.h>
#include <kern/sync_lock.h>
#include <kern/affinity.h>
#include <vm/pmap.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h>
#include <vm/vm_pageout.h>
#include <vm/vm_protos.h>
#if MACH_KDB
#include <ddb/db_sym.h>
#endif
#ifdef __ppc__
#include <ppc/exception.h>
#include <ppc/hw_perfmon.h>
#endif
#include <mach/task_server.h>
#include <mach/mach_host_server.h>
#include <mach/host_security_server.h>
#include <mach/mach_port_server.h>
#include <mach/security_server.h>
#include <vm/vm_shared_region.h>
#if CONFIG_MACF_MACH
#include <security/mac_mach_internal.h>
#endif
task_t kernel_task;
zone_t task_zone;
void task_hold_locked(
task_t task);
void task_wait_locked(
task_t task);
void task_release_locked(
task_t task);
void task_free(
task_t task );
void task_synchronizer_destroy_all(
task_t task);
kern_return_t task_set_ledger(
task_t task,
ledger_t wired,
ledger_t paged);
void
task_backing_store_privileged(
task_t task)
{
task_lock(task);
task->priv_flags |= VM_BACKING_STORE_PRIV;
task_unlock(task);
return;
}
void
task_set_64bit(
task_t task,
boolean_t is64bit)
{
#ifdef __i386__
thread_t thread;
#endif
int vm_flags = 0;
if (is64bit) {
if (task_has_64BitAddr(task))
return;
task_set_64BitAddr(task);
} else {
if ( !task_has_64BitAddr(task))
return;
(void) vm_map_remove(task->map,
(vm_map_offset_t) VM_MAX_ADDRESS,
MACH_VM_MAX_ADDRESS,
0);
#ifdef __ppc__
pmap_unmap_sharedpage(task->map->pmap);
vm_flags |= VM_MAP_REMOVE_NO_PMAP_CLEANUP;
#endif
(void) vm_map_remove(task->map,
MACH_VM_MAX_ADDRESS,
0xFFFFFFFFFFFFF000ULL,
vm_flags);
task_clear_64BitAddr(task);
}
#ifdef __i386__
queue_iterate(&task->threads, thread, thread_t, task_threads) {
machine_thread_switch_addrmode(thread);
}
#endif
}
void
task_init(void)
{
task_zone = zinit(
sizeof(struct task),
TASK_MAX * sizeof(struct task),
TASK_CHUNK * sizeof(struct task),
"tasks");
if (task_create_internal(TASK_NULL, FALSE, FALSE, &kernel_task) != KERN_SUCCESS)
panic("task_init\n");
vm_map_deallocate(kernel_task->map);
kernel_task->map = kernel_map;
}
kern_return_t
kernel_task_create(
__unused task_t parent_task,
__unused vm_offset_t map_base,
__unused vm_size_t map_size,
__unused task_t *child_task)
{
return (KERN_INVALID_ARGUMENT);
}
kern_return_t
task_create(
task_t parent_task,
__unused ledger_port_array_t ledger_ports,
__unused mach_msg_type_number_t num_ledger_ports,
__unused boolean_t inherit_memory,
__unused task_t *child_task)
{
if (parent_task == TASK_NULL)
return(KERN_INVALID_ARGUMENT);
return(KERN_FAILURE);
}
kern_return_t
host_security_create_task_token(
host_security_t host_security,
task_t parent_task,
__unused security_token_t sec_token,
__unused audit_token_t audit_token,
__unused host_priv_t host_priv,
__unused ledger_port_array_t ledger_ports,
__unused mach_msg_type_number_t num_ledger_ports,
__unused boolean_t inherit_memory,
__unused task_t *child_task)
{
if (parent_task == TASK_NULL)
return(KERN_INVALID_ARGUMENT);
if (host_security == HOST_NULL)
return(KERN_INVALID_SECURITY);
return(KERN_FAILURE);
}
kern_return_t
task_create_internal(
task_t parent_task,
boolean_t inherit_memory,
boolean_t is_64bit,
task_t *child_task)
{
task_t new_task;
vm_shared_region_t shared_region;
new_task = (task_t) zalloc(task_zone);
if (new_task == TASK_NULL)
return(KERN_RESOURCE_SHORTAGE);
new_task->ref_count = 2;
if (inherit_memory)
new_task->map = vm_map_fork(parent_task->map);
else
new_task->map = vm_map_create(pmap_create(0, is_64bit),
(vm_map_offset_t)(VM_MIN_ADDRESS),
(vm_map_offset_t)(VM_MAX_ADDRESS), TRUE);
if (parent_task)
vm_map_set_user_wire_limit(new_task->map, parent_task->map->user_wire_limit);
mutex_init(&new_task->lock, 0);
queue_init(&new_task->threads);
new_task->suspend_count = 0;
new_task->thread_count = 0;
new_task->active_thread_count = 0;
new_task->user_stop_count = 0;
new_task->role = TASK_UNSPECIFIED;
new_task->active = TRUE;
new_task->user_data = NULL;
new_task->faults = 0;
new_task->cow_faults = 0;
new_task->pageins = 0;
new_task->messages_sent = 0;
new_task->messages_received = 0;
new_task->syscalls_mach = 0;
new_task->priv_flags = 0;
new_task->syscalls_unix=0;
new_task->c_switch = new_task->p_switch = new_task->ps_switch = 0;
new_task->taskFeatures[0] = 0;
new_task->taskFeatures[1] = 0;
#ifdef MACH_BSD
new_task->bsd_info = NULL;
#endif
#ifdef __i386__
new_task->i386_ldt = 0;
#endif
#ifdef __ppc__
if(BootProcInfo.pf.Available & pf64Bit) new_task->taskFeatures[0] |= tf64BitData;
#endif
queue_init(&new_task->semaphore_list);
queue_init(&new_task->lock_set_list);
new_task->semaphores_owned = 0;
new_task->lock_sets_owned = 0;
#if CONFIG_MACF_MACH
new_task->label = labelh_new(1);
mac_task_label_init (&new_task->maclabel);
#endif
ipc_task_init(new_task, parent_task);
new_task->total_user_time = 0;
new_task->total_system_time = 0;
new_task->vtimers = 0;
new_task->shared_region = NULL;
new_task->affinity_space = NULL;
if (parent_task != TASK_NULL) {
new_task->sec_token = parent_task->sec_token;
new_task->audit_token = parent_task->audit_token;
shared_region = vm_shared_region_get(parent_task);
vm_shared_region_set(new_task, shared_region);
new_task->wired_ledger_port = ledger_copy(
convert_port_to_ledger(parent_task->wired_ledger_port));
new_task->paged_ledger_port = ledger_copy(
convert_port_to_ledger(parent_task->paged_ledger_port));
if(task_has_64BitAddr(parent_task))
task_set_64BitAddr(new_task);
#ifdef __i386__
if (inherit_memory && parent_task->i386_ldt)
new_task->i386_ldt = user_ldt_copy(parent_task->i386_ldt);
#endif
if (inherit_memory && parent_task->affinity_space)
task_affinity_create(parent_task, new_task);
}
else {
new_task->sec_token = KERNEL_SECURITY_TOKEN;
new_task->audit_token = KERNEL_AUDIT_TOKEN;
new_task->wired_ledger_port = ledger_copy(root_wired_ledger);
new_task->paged_ledger_port = ledger_copy(root_paged_ledger);
}
if (kernel_task == TASK_NULL) {
new_task->priority = BASEPRI_KERNEL;
new_task->max_priority = MAXPRI_KERNEL;
}
else {
new_task->priority = BASEPRI_DEFAULT;
new_task->max_priority = MAXPRI_USER;
}
mutex_lock(&tasks_threads_lock);
queue_enter(&tasks, new_task, task_t, tasks);
tasks_count++;
mutex_unlock(&tasks_threads_lock);
if (vm_backing_store_low && parent_task != NULL)
new_task->priv_flags |= (parent_task->priv_flags&VM_BACKING_STORE_PRIV);
ipc_task_enable(new_task);
*child_task = new_task;
return(KERN_SUCCESS);
}
void
task_deallocate(
task_t task)
{
if (task == TASK_NULL)
return;
if (task_deallocate_internal(task) > 0)
return;
ipc_task_terminate(task);
if (task->affinity_space)
task_affinity_deallocate(task);
vm_map_deallocate(task->map);
is_release(task->itk_space);
#if CONFIG_MACF_MACH
labelh_release(task->label);
#endif
zfree(task_zone, task);
}
void
task_name_deallocate(
task_name_t task_name)
{
return(task_deallocate((task_t)task_name));
}
kern_return_t
task_terminate(
task_t task)
{
if (task == TASK_NULL)
return (KERN_INVALID_ARGUMENT);
if (task->bsd_info)
return (KERN_FAILURE);
return (task_terminate_internal(task));
}
kern_return_t
task_terminate_internal(
task_t task)
{
thread_t thread, self;
task_t self_task;
boolean_t interrupt_save;
assert(task != kernel_task);
self = current_thread();
self_task = self->task;
if (task == self_task)
task_lock(task);
else
if (task < self_task) {
task_lock(task);
task_lock(self_task);
}
else {
task_lock(self_task);
task_lock(task);
}
if (!task->active || !self->active) {
task_unlock(task);
if (self_task != task)
task_unlock(self_task);
return (KERN_FAILURE);
}
if (self_task != task)
task_unlock(self_task);
interrupt_save = thread_interrupt_level(THREAD_UNINT);
task_hold_locked(task);
task->active = FALSE;
ipc_task_disable(task);
queue_iterate(&task->threads, thread, thread_t, task_threads) {
thread_terminate_internal(thread);
}
if (self_task == task)
machine_thread_terminate_self();
task_unlock(task);
task_synchronizer_destroy_all(task);
ipc_space_destroy(task->itk_space);
#ifdef __ppc__
pmap_unmap_sharedpage(task->map->pmap);
#endif
if (vm_map_has_4GB_pagezero(task->map))
vm_map_clear_4GB_pagezero(task->map);
vm_map_remove(task->map,
task->map->min_offset,
task->map->max_offset,
VM_MAP_NO_FLAGS);
vm_shared_region_set(task, NULL);
mutex_lock(&tasks_threads_lock);
queue_remove(&tasks, task, task_t, tasks);
tasks_count--;
mutex_unlock(&tasks_threads_lock);
thread_interrupt_level(interrupt_save);
#if __ppc__
perfmon_release_facility(task); #endif
task_deallocate(task);
return (KERN_SUCCESS);
}
kern_return_t
task_halt(
task_t task)
{
thread_t thread, self;
assert(task != kernel_task);
self = current_thread();
if (task != self->task)
return (KERN_INVALID_ARGUMENT);
task_lock(task);
if (!task->active || !self->active) {
task_unlock(task);
return (KERN_FAILURE);
}
if (task->thread_count > 1) {
task_hold_locked(task);
queue_iterate(&task->threads, thread, thread_t, task_threads) {
if (thread != self)
thread_terminate_internal(thread);
}
task_release_locked(task);
}
machine_thread_terminate_self();
task_unlock(task);
task_synchronizer_destroy_all(task);
ipc_space_clean(task->itk_space);
vm_map_remove(task->map, task->map->min_offset,
task->map->max_offset, VM_MAP_NO_FLAGS);
return (KERN_SUCCESS);
}
void
task_hold_locked(
register task_t task)
{
register thread_t thread;
assert(task->active);
if (task->suspend_count++ > 0)
return;
queue_iterate(&task->threads, thread, thread_t, task_threads) {
thread_mtx_lock(thread);
thread_hold(thread);
thread_mtx_unlock(thread);
}
}
kern_return_t
task_hold(
register task_t task)
{
if (task == TASK_NULL)
return (KERN_INVALID_ARGUMENT);
task_lock(task);
if (!task->active) {
task_unlock(task);
return (KERN_FAILURE);
}
task_hold_locked(task);
task_unlock(task);
return (KERN_SUCCESS);
}
void
task_wait_locked(
register task_t task)
{
register thread_t thread, self;
assert(task->active);
assert(task->suspend_count > 0);
self = current_thread();
queue_iterate(&task->threads, thread, thread_t, task_threads) {
if (thread != self)
thread_wait(thread);
}
}
void
task_release_locked(
register task_t task)
{
register thread_t thread;
assert(task->active);
assert(task->suspend_count > 0);
if (--task->suspend_count > 0)
return;
queue_iterate(&task->threads, thread, thread_t, task_threads) {
thread_mtx_lock(thread);
thread_release(thread);
thread_mtx_unlock(thread);
}
}
kern_return_t
task_release(
task_t task)
{
if (task == TASK_NULL)
return (KERN_INVALID_ARGUMENT);
task_lock(task);
if (!task->active) {
task_unlock(task);
return (KERN_FAILURE);
}
task_release_locked(task);
task_unlock(task);
return (KERN_SUCCESS);
}
kern_return_t
task_threads(
task_t task,
thread_act_array_t *threads_out,
mach_msg_type_number_t *count)
{
mach_msg_type_number_t actual;
thread_t *thread_list;
thread_t thread;
vm_size_t size, size_needed;
void *addr;
unsigned int i, j;
if (task == TASK_NULL)
return (KERN_INVALID_ARGUMENT);
size = 0; addr = NULL;
for (;;) {
task_lock(task);
if (!task->active) {
task_unlock(task);
if (size != 0)
kfree(addr, size);
return (KERN_FAILURE);
}
actual = task->thread_count;
size_needed = actual * sizeof (mach_port_t);
if (size_needed <= size)
break;
task_unlock(task);
if (size != 0)
kfree(addr, size);
assert(size_needed > 0);
size = size_needed;
addr = kalloc(size);
if (addr == 0)
return (KERN_RESOURCE_SHORTAGE);
}
thread_list = (thread_t *)addr;
i = j = 0;
for (thread = (thread_t)queue_first(&task->threads); i < actual;
++i, thread = (thread_t)queue_next(&thread->task_threads)) {
thread_reference_internal(thread);
thread_list[j++] = thread;
}
assert(queue_end(&task->threads, (queue_entry_t)thread));
actual = j;
size_needed = actual * sizeof (mach_port_t);
task_unlock(task);
if (actual == 0) {
*threads_out = NULL;
*count = 0;
if (size != 0)
kfree(addr, size);
}
else {
if (size_needed < size) {
void *newaddr;
newaddr = kalloc(size_needed);
if (newaddr == 0) {
for (i = 0; i < actual; ++i)
thread_deallocate(thread_list[i]);
kfree(addr, size);
return (KERN_RESOURCE_SHORTAGE);
}
bcopy(addr, newaddr, size_needed);
kfree(addr, size);
thread_list = (thread_t *)newaddr;
}
*threads_out = thread_list;
*count = actual;
for (i = 0; i < actual; ++i)
((ipc_port_t *) thread_list)[i] = convert_thread_to_port(thread_list[i]);
}
return (KERN_SUCCESS);
}
kern_return_t
task_suspend(
register task_t task)
{
if (task == TASK_NULL || task == kernel_task)
return (KERN_INVALID_ARGUMENT);
task_lock(task);
if (!task->active) {
task_unlock(task);
return (KERN_FAILURE);
}
if (task->user_stop_count++ > 0) {
task_unlock(task);
return (KERN_SUCCESS);
}
task_hold_locked(task);
task_wait_locked(task);
task_unlock(task);
return (KERN_SUCCESS);
}
kern_return_t
task_resume(
register task_t task)
{
register boolean_t release = FALSE;
if (task == TASK_NULL || task == kernel_task)
return (KERN_INVALID_ARGUMENT);
task_lock(task);
if (!task->active) {
task_unlock(task);
return (KERN_FAILURE);
}
if (task->user_stop_count > 0) {
if (--task->user_stop_count == 0)
release = TRUE;
}
else {
task_unlock(task);
return (KERN_FAILURE);
}
if (release)
task_release_locked(task);
task_unlock(task);
return (KERN_SUCCESS);
}
kern_return_t
host_security_set_task_token(
host_security_t host_security,
task_t task,
security_token_t sec_token,
audit_token_t audit_token,
host_priv_t host_priv)
{
ipc_port_t host_port;
kern_return_t kr;
if (task == TASK_NULL)
return(KERN_INVALID_ARGUMENT);
if (host_security == HOST_NULL)
return(KERN_INVALID_SECURITY);
task_lock(task);
task->sec_token = sec_token;
task->audit_token = audit_token;
task_unlock(task);
if (host_priv != HOST_PRIV_NULL) {
kr = host_get_host_priv_port(host_priv, &host_port);
} else {
kr = host_get_host_port(host_priv_self(), &host_port);
}
assert(kr == KERN_SUCCESS);
kr = task_set_special_port(task, TASK_HOST_PORT, host_port);
return(kr);
}
kern_return_t
task_set_ledger(
task_t task,
ledger_t wired,
ledger_t paged)
{
if (task == TASK_NULL)
return(KERN_INVALID_ARGUMENT);
task_lock(task);
if (wired) {
ipc_port_release_send(task->wired_ledger_port);
task->wired_ledger_port = ledger_copy(wired);
}
if (paged) {
ipc_port_release_send(task->paged_ledger_port);
task->paged_ledger_port = ledger_copy(paged);
}
task_unlock(task);
return(KERN_SUCCESS);
}
kern_return_t
task_set_info(
task_t task,
task_flavor_t flavor,
__unused task_info_t task_info_in,
__unused mach_msg_type_number_t task_info_count)
{
if (task == TASK_NULL)
return(KERN_INVALID_ARGUMENT);
switch (flavor) {
default:
return (KERN_INVALID_ARGUMENT);
}
return (KERN_SUCCESS);
}
kern_return_t
task_info(
task_t task,
task_flavor_t flavor,
task_info_t task_info_out,
mach_msg_type_number_t *task_info_count)
{
if (task == TASK_NULL)
return (KERN_INVALID_ARGUMENT);
switch (flavor) {
case TASK_BASIC_INFO_32:
case TASK_BASIC2_INFO_32:
{
task_basic_info_32_t basic_info;
vm_map_t map;
if (*task_info_count < TASK_BASIC_INFO_32_COUNT)
return (KERN_INVALID_ARGUMENT);
basic_info = (task_basic_info_32_t)task_info_out;
map = (task == kernel_task)? kernel_map: task->map;
basic_info->virtual_size = CAST_DOWN(vm_offset_t,map->size);
if (flavor == TASK_BASIC2_INFO_32) {
basic_info->resident_size = pmap_resident_max(map->pmap);
} else {
basic_info->resident_size = pmap_resident_count(map->pmap);
}
basic_info->resident_size *= PAGE_SIZE;
task_lock(task);
basic_info->policy = ((task != kernel_task)?
POLICY_TIMESHARE: POLICY_RR);
basic_info->suspend_count = task->user_stop_count;
absolutetime_to_microtime(task->total_user_time,
(unsigned *)&basic_info->user_time.seconds,
(unsigned *)&basic_info->user_time.microseconds);
absolutetime_to_microtime(task->total_system_time,
(unsigned *)&basic_info->system_time.seconds,
(unsigned *)&basic_info->system_time.microseconds);
task_unlock(task);
*task_info_count = TASK_BASIC_INFO_32_COUNT;
break;
}
case TASK_BASIC_INFO_64:
{
task_basic_info_64_t basic_info;
vm_map_t map;
if (*task_info_count < TASK_BASIC_INFO_64_COUNT)
return (KERN_INVALID_ARGUMENT);
basic_info = (task_basic_info_64_t)task_info_out;
map = (task == kernel_task)? kernel_map: task->map;
basic_info->virtual_size = map->size;
basic_info->resident_size =
(mach_vm_size_t)(pmap_resident_count(map->pmap))
* PAGE_SIZE_64;
task_lock(task);
basic_info->policy = ((task != kernel_task)?
POLICY_TIMESHARE: POLICY_RR);
basic_info->suspend_count = task->user_stop_count;
absolutetime_to_microtime(task->total_user_time,
(unsigned *)&basic_info->user_time.seconds,
(unsigned *)&basic_info->user_time.microseconds);
absolutetime_to_microtime(task->total_system_time,
(unsigned *)&basic_info->system_time.seconds,
(unsigned *)&basic_info->system_time.microseconds);
task_unlock(task);
*task_info_count = TASK_BASIC_INFO_64_COUNT;
break;
}
case TASK_THREAD_TIMES_INFO:
{
register task_thread_times_info_t times_info;
register thread_t thread;
if (*task_info_count < TASK_THREAD_TIMES_INFO_COUNT)
return (KERN_INVALID_ARGUMENT);
times_info = (task_thread_times_info_t) task_info_out;
times_info->user_time.seconds = 0;
times_info->user_time.microseconds = 0;
times_info->system_time.seconds = 0;
times_info->system_time.microseconds = 0;
task_lock(task);
queue_iterate(&task->threads, thread, thread_t, task_threads) {
time_value_t user_time, system_time;
thread_read_times(thread, &user_time, &system_time);
time_value_add(×_info->user_time, &user_time);
time_value_add(×_info->system_time, &system_time);
}
task_unlock(task);
*task_info_count = TASK_THREAD_TIMES_INFO_COUNT;
break;
}
case TASK_ABSOLUTETIME_INFO:
{
task_absolutetime_info_t info;
register thread_t thread;
if (*task_info_count < TASK_ABSOLUTETIME_INFO_COUNT)
return (KERN_INVALID_ARGUMENT);
info = (task_absolutetime_info_t)task_info_out;
info->threads_user = info->threads_system = 0;
task_lock(task);
info->total_user = task->total_user_time;
info->total_system = task->total_system_time;
queue_iterate(&task->threads, thread, thread_t, task_threads) {
uint64_t tval;
tval = timer_grab(&thread->user_timer);
info->threads_user += tval;
info->total_user += tval;
tval = timer_grab(&thread->system_timer);
info->threads_system += tval;
info->total_system += tval;
}
task_unlock(task);
*task_info_count = TASK_ABSOLUTETIME_INFO_COUNT;
break;
}
case TASK_SCHED_FIFO_INFO:
{
if (*task_info_count < POLICY_FIFO_BASE_COUNT)
return (KERN_INVALID_ARGUMENT);
return (KERN_INVALID_POLICY);
}
case TASK_SCHED_RR_INFO:
{
register policy_rr_base_t rr_base;
if (*task_info_count < POLICY_RR_BASE_COUNT)
return (KERN_INVALID_ARGUMENT);
rr_base = (policy_rr_base_t) task_info_out;
task_lock(task);
if (task != kernel_task) {
task_unlock(task);
return (KERN_INVALID_POLICY);
}
rr_base->base_priority = task->priority;
task_unlock(task);
rr_base->quantum = std_quantum_us / 1000;
*task_info_count = POLICY_RR_BASE_COUNT;
break;
}
case TASK_SCHED_TIMESHARE_INFO:
{
register policy_timeshare_base_t ts_base;
if (*task_info_count < POLICY_TIMESHARE_BASE_COUNT)
return (KERN_INVALID_ARGUMENT);
ts_base = (policy_timeshare_base_t) task_info_out;
task_lock(task);
if (task == kernel_task) {
task_unlock(task);
return (KERN_INVALID_POLICY);
}
ts_base->base_priority = task->priority;
task_unlock(task);
*task_info_count = POLICY_TIMESHARE_BASE_COUNT;
break;
}
case TASK_SECURITY_TOKEN:
{
register security_token_t *sec_token_p;
if (*task_info_count < TASK_SECURITY_TOKEN_COUNT)
return (KERN_INVALID_ARGUMENT);
sec_token_p = (security_token_t *) task_info_out;
task_lock(task);
*sec_token_p = task->sec_token;
task_unlock(task);
*task_info_count = TASK_SECURITY_TOKEN_COUNT;
break;
}
case TASK_AUDIT_TOKEN:
{
register audit_token_t *audit_token_p;
if (*task_info_count < TASK_AUDIT_TOKEN_COUNT)
return (KERN_INVALID_ARGUMENT);
audit_token_p = (audit_token_t *) task_info_out;
task_lock(task);
*audit_token_p = task->audit_token;
task_unlock(task);
*task_info_count = TASK_AUDIT_TOKEN_COUNT;
break;
}
case TASK_SCHED_INFO:
return (KERN_INVALID_ARGUMENT);
case TASK_EVENTS_INFO:
{
register task_events_info_t events_info;
register thread_t thread;
if (*task_info_count < TASK_EVENTS_INFO_COUNT)
return (KERN_INVALID_ARGUMENT);
events_info = (task_events_info_t) task_info_out;
task_lock(task);
events_info->faults = task->faults;
events_info->pageins = task->pageins;
events_info->cow_faults = task->cow_faults;
events_info->messages_sent = task->messages_sent;
events_info->messages_received = task->messages_received;
events_info->syscalls_mach = task->syscalls_mach;
events_info->syscalls_unix = task->syscalls_unix;
events_info->csw = task->c_switch;
queue_iterate(&task->threads, thread, thread_t, task_threads) {
events_info->csw += thread->c_switch;
}
task_unlock(task);
*task_info_count = TASK_EVENTS_INFO_COUNT;
break;
}
case TASK_AFFINITY_TAG_INFO:
{
if (*task_info_count < TASK_AFFINITY_TAG_INFO_COUNT)
return (KERN_INVALID_ARGUMENT);
return task_affinity_info(task, task_info_out, task_info_count);
}
default:
return (KERN_INVALID_ARGUMENT);
}
return (KERN_SUCCESS);
}
void
task_vtimer_set(
task_t task,
integer_t which)
{
thread_t thread;
task_lock(task);
task->vtimers |= which;
switch (which) {
case TASK_VTIMER_USER:
queue_iterate(&task->threads, thread, thread_t, task_threads) {
thread->vtimer_user_save = timer_grab(&thread->user_timer);
}
break;
case TASK_VTIMER_PROF:
queue_iterate(&task->threads, thread, thread_t, task_threads) {
thread->vtimer_prof_save = timer_grab(&thread->user_timer);
thread->vtimer_prof_save += timer_grab(&thread->system_timer);
}
break;
case TASK_VTIMER_RLIM:
queue_iterate(&task->threads, thread, thread_t, task_threads) {
thread->vtimer_rlim_save = timer_grab(&thread->user_timer);
thread->vtimer_rlim_save += timer_grab(&thread->system_timer);
}
break;
}
task_unlock(task);
}
void
task_vtimer_clear(
task_t task,
integer_t which)
{
assert(task == current_task());
task_lock(task);
task->vtimers &= ~which;
task_unlock(task);
}
void
task_vtimer_update(
__unused
task_t task,
integer_t which,
uint32_t *microsecs)
{
thread_t thread = current_thread();
uint32_t tdelt, secs;
uint64_t tsum;
assert(task == current_task());
assert(task->vtimers & which);
tdelt = secs = 0;
switch (which) {
case TASK_VTIMER_USER:
tdelt = timer_delta(&thread->user_timer,
&thread->vtimer_user_save);
break;
case TASK_VTIMER_PROF:
tsum = timer_grab(&thread->user_timer);
tsum += timer_grab(&thread->system_timer);
tdelt = tsum - thread->vtimer_prof_save;
thread->vtimer_prof_save = tsum;
break;
case TASK_VTIMER_RLIM:
tsum = timer_grab(&thread->user_timer);
tsum += timer_grab(&thread->system_timer);
tdelt = tsum - thread->vtimer_rlim_save;
thread->vtimer_rlim_save = tsum;
break;
}
absolutetime_to_microtime(tdelt, &secs, microsecs);
}
kern_return_t
task_assign(
__unused task_t task,
__unused processor_set_t new_pset,
__unused boolean_t assign_threads)
{
return(KERN_FAILURE);
}
kern_return_t
task_assign_default(
task_t task,
boolean_t assign_threads)
{
return (task_assign(task, &pset0, assign_threads));
}
kern_return_t
task_get_assignment(
task_t task,
processor_set_t *pset)
{
if (!task->active)
return(KERN_FAILURE);
*pset = &pset0;
return (KERN_SUCCESS);
}
kern_return_t
task_policy(
__unused task_t task,
__unused policy_t policy_id,
__unused policy_base_t base,
__unused mach_msg_type_number_t count,
__unused boolean_t set_limit,
__unused boolean_t change)
{
return(KERN_FAILURE);
}
kern_return_t
task_set_policy(
__unused task_t task,
__unused processor_set_t pset,
__unused policy_t policy_id,
__unused policy_base_t base,
__unused mach_msg_type_number_t base_count,
__unused policy_limit_t limit,
__unused mach_msg_type_number_t limit_count,
__unused boolean_t change)
{
return(KERN_FAILURE);
}
#if FAST_TAS
kern_return_t
task_set_ras_pc(
task_t task,
vm_offset_t pc,
vm_offset_t endpc)
{
extern int fast_tas_debug;
if (fast_tas_debug) {
printf("task 0x%x: setting fast_tas to [0x%x, 0x%x]\n",
task, pc, endpc);
}
task_lock(task);
task->fast_tas_base = pc;
task->fast_tas_end = endpc;
task_unlock(task);
return KERN_SUCCESS;
}
#else
kern_return_t
task_set_ras_pc(
__unused task_t task,
__unused vm_offset_t pc,
__unused vm_offset_t endpc)
{
return KERN_FAILURE;
}
#endif
void
task_synchronizer_destroy_all(task_t task)
{
semaphore_t semaphore;
lock_set_t lock_set;
while (!queue_empty(&task->semaphore_list)) {
semaphore = (semaphore_t) queue_first(&task->semaphore_list);
(void) semaphore_destroy(task, semaphore);
}
while (!queue_empty(&task->lock_set_list)) {
lock_set = (lock_set_t) queue_first(&task->lock_set_list);
(void) lock_set_destroy(task, lock_set);
}
}
boolean_t is_kerneltask(task_t t)
{
if (t == kernel_task)
return (TRUE);
return (FALSE);
}
#undef current_task
task_t current_task(void);
task_t current_task(void)
{
return (current_task_fast());
}
#undef task_reference
void task_reference(task_t task);
void
task_reference(
task_t task)
{
if (task != TASK_NULL)
task_reference_internal(task);
}
#if CONFIG_MACF_MACH
void
tasklabel_lock2(
task_t a,
task_t b)
{
labelh_reference(a->label);
labelh_reference(b->label);
}
void
tasklabel_unlock2(
task_t a,
task_t b)
{
labelh_release(a->label);
labelh_release(b->label);
}
void
mac_task_label_update_internal(
struct label *pl,
struct task *task)
{
tasklabel_lock(task);
task->label = labelh_modify(task->label);
mac_task_label_update(pl, &task->maclabel);
tasklabel_unlock(task);
ip_lock(task->itk_self);
mac_port_label_update_cred(pl, &task->itk_self->ip_label);
ip_unlock(task->itk_self);
}
void
mac_task_label_modify(
struct task *task,
void *arg,
void (*f) (struct label *l, void *arg))
{
tasklabel_lock(task);
task->label = labelh_modify(task->label);
(*f)(&task->maclabel, arg);
tasklabel_unlock(task);
}
struct label *
mac_task_get_label(struct task *task)
{
return (&task->maclabel);
}
#endif