tfp0.c

#include <mach/mach.h>
#include <stdio.h>

int main(void) {
    mach_port_t kernel_task = 0;
    printf("task_for_pid: %d\n",host_get_special_port(mach_host_self(), HOST_LOCAL_NODE, 4, &kernel_task));
    if (!host_get_special_port(mach_host_self(), HOST_LOCAL_NODE, 4, &kernel_task)) return -1;
    return kernel_task;
}