HIDEPID_INVISIBLE
if (!has_pid_permissions(fs_info, task, HIDEPID_INVISIBLE)) {
if (!has_pid_permissions(fs_info, iter.task, HIDEPID_INVISIBLE))
if (fs_info->hide_pid == HIDEPID_INVISIBLE) {
case HIDEPID_INVISIBLE: return "invisible";
value == HIDEPID_INVISIBLE ||
ctx->hidepid = HIDEPID_INVISIBLE;