Symbol: checktty
lib/libutil/pidlock.c
218
if (checktty(tty) != 0)
lib/libutil/pidlock.c
233
if (checktty(tty) != 0)
sys/rump/librump/rumpkern/signals.c
154
pgsignal(struct pgrp *pgrp, int sig, int checktty)