tty_hardware_signal
status_t (*tty_hardware_signal)(struct tty_cookie *cookie,
gTTYModule->tty_hardware_signal(fSystemTTYCookie, line, enable);
gTTYModule->tty_hardware_signal(fSystemTTYCookie, TTYHWDCD, enable);
gTTYModule->tty_hardware_signal(fSystemTTYCookie, TTYHWCTS, enable);
gTTYModule->tty_hardware_signal(fSystemTTYCookie, TTYHWCTS,
gTTYModule->tty_hardware_signal(fSystemTTYCookie, TTYHWDCD,
gTTYModule->tty_hardware_signal(fSystemTTYCookie, TTYHWCTS,
gTTYModule->tty_hardware_signal(fSystemTTYCookie, TTYHWDSR, false);
gTTYModule->tty_hardware_signal(fSystemTTYCookie, TTYHWRI, false);
&tty_hardware_signal
extern status_t tty_hardware_signal(tty_cookie* cookie, int signal, bool);