bsd/kern/tty.c

149 static int isctty_sp(proc_t p, struct tty  *tp, struct session *sessp);
346 	struct session *sessp, *oldsess;
361 	sessp = proc_session(p);
367 	if (SESS_LEADER(p, sessp) &&	/* the process is the session leader */
368 	    sessp->s_ttyvp == NULL &&	/* but has no controlling tty */
370 		session_lock(sessp);
371 	    	if ((sessp->s_flags & S_NOCTTY) == 0) {	/* and no O_NOCTTY */
372 			oldtp = sessp->s_ttyp;
374 			sessp->s_ttyp = tp;
376 			session_unlock(sessp);
382 			tp->t_session = sessp;
384 			sessp->s_ttypgrpid = pg->pg_id;
397 		session_unlock(sessp);
402 	if (sessp != SESSION_NULL)
403 		session_rele(sessp);
1057 	struct session *sessp, *oldsessp;
1389 		sessp = proc_session(p);
1390 		if (!SESS_LEADER(p, sessp) ||
1391 		    ((sessp->s_ttyvp || tp->t_session) &&
1392 		    (tp->t_session != sessp))) {
1395 			if (sessp != SESSION_NULL)
1396 				session_rele(sessp);
1408 		/* do not drop refs on sessp and pg as tp holds them */
1409 		tp->t_session = sessp;
1410 		sessp->s_ttypgrpid = pg->pg_id;
1413 		session_lock(sessp);
1414 		oldtp = sessp->s_ttyp;
1416 		sessp->s_ttyp = tp;
1417 		session_unlock(sessp);
1434 		sessp = proc_session(p);
1435 		if (!isctty_sp(p, tp, sessp)) {
1436 			if (sessp != SESSION_NULL)
1437 				session_rele(sessp);
1442 			if (sessp != SESSION_NULL)
1443 				session_rele(sessp);
1446 		 } else if (pgrp->pg_session != sessp) {
1449 			if (sessp != SESSION_NULL)
1450 				session_rele(sessp);
1459 		sessp->s_ttypgrpid = pgrp->pg_id;
1465 		if (sessp != SESSION_NULL)
1466 			session_rele(sessp);
3126 	struct session * sessp;
3128 	sessp = proc_session(p);
3129 	retval = (sessp == tp->t_session && p->p_flag & P_CONTROLT);
3130 	session_rele(sessp);
3135 isctty_sp(proc_t p, struct tty  *tp, struct session *sessp)
3137 	return(sessp == tp->t_session && p->p_flag & P_CONTROLT);