term_chk
if (term_chk(myuid, mytty, &msgsok, atime, 1, saved_egid) == -1)
int term_chk(uid_t, const char *, int *, time_t *, int, gid_t);
ttyfd = term_chk(uid, argv[2], &msgsok, &atime, 0, saved_egid);
nfd = term_chk(uid, ep->line, &msgsok, &atime, 0,