sysctl_pty       2335 kern/tty.c     		return (sysctl_pty(name, namelen, oldp, oldlenp, newp, newlen));
sysctl_pty        103 kern/tty_pty.c int	sysctl_pty(int *, u_int, void *, size_t *, void *, size_t);
sysctl_pty        252 sys/tty.h      int	sysctl_pty(int *, u_int, void *, size_t *, void *, size_t);