tun_siguid         93 net/if_tun.c   	uid_t		tun_siguid;	/* uid for process that set tun_pgid */
tun_siguid        588 net/if_tun.c   		    tp->tun_siguid, tp->tun_sigeuid);
tun_siguid        671 net/if_tun.c   		tp->tun_siguid = p->p_cred->p_ruid;