setpgid
SYSCALL_DEFINE2(setpgid, pid_t, pid, pid_t, pgid)
return setpgid(0, 0);
setpgid(getpid(), getpid());
setpgid(getpid(), getpid());
setpgid(0, 0);
setpgid(pid, pid);
if (setpgid(0, 0) != 0)