111 #define G (*ptr_to_globals)  macro
113 	SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
165 		G.speeds[G.numspeed] = bcode(cp);  in parse_speeds()
166 		if (G.speeds[G.numspeed] < 0)  in parse_speeds()
169 		G.numspeed++;  in parse_speeds()
170 		if (G.numspeed > MAX_SPEED)  in parse_speeds()
183 		&G.initstring, &G.fakehost, &G.issue,  in parse_args()
184 		&G.login, &G.timeout  in parse_args()
187 		G.initstring = xstrdup(G.initstring);  in parse_args()
189 		strcpy_and_process_escape_sequences(G.initstring, G.initstring);  in parse_args()
195 	G.tty_name = argv[0];  in parse_args()
199 		G.tty_name = ts; /* tty name is in argv[1] */  in parse_args()
214 	if (NOT_LONE_DASH(G.tty_name)) {  in open_tty()
215 		if (G.tty_name[0] != '/')  in open_tty()
216 			G.tty_name = xasprintf("/dev/%s", G.tty_name); /* will leak it */  in open_tty()
221 		xopen(G.tty_name, O_RDWR | O_NONBLOCK); /* uses fd 0 */  in open_tty()
238 			G.tty_name = n;  in open_tty()
240 	applet_name = xasprintf("getty: %s", skip_dev_pfx(G.tty_name));  in open_tty()
245 	if (tcsetattr_stdin_TCSANOW(&G.tty_attrs) < 0)  in set_tty_attrs()
274 		cfsetspeed(&G.tty_attrs, speed);  in init_tty_attrs()
281 	G.tty_attrs.c_cflag &= (0  in init_tty_attrs()
301 	G.tty_attrs.c_cflag |= CS8 | HUPCL | CREAD;  in init_tty_attrs()
307 		G.tty_attrs.c_cflag |= CLOCAL;  in init_tty_attrs()
311 		G.tty_attrs.c_cflag |= CRTSCTS; /* flow control using RTS/CTS pins */  in init_tty_attrs()
313 	G.tty_attrs.c_iflag = 0;  in init_tty_attrs()
314 	G.tty_attrs.c_lflag = 0;  in init_tty_attrs()
316 	G.tty_attrs.c_oflag = OPOST | ONLCR;  in init_tty_attrs()
319 	G.tty_attrs.c_cc[VMIN] = 1;  in init_tty_attrs()
321 	G.tty_attrs.c_cc[VTIME] = 0;  in init_tty_attrs()
323 	G.tty_attrs.c_line = 0;  in init_tty_attrs()
336 	G.tty_attrs.c_iflag |= IXON | IXOFF;  in finalize_tty_attrs()
337 	if (G.eol == '\r') {  in finalize_tty_attrs()
338 		G.tty_attrs.c_iflag |= ICRNL; /* map CR on input to NL */  in finalize_tty_attrs()
367 	G.tty_attrs.c_lflag |= ICANON | ISIG | ECHO | ECHOE | ECHOK | ECHOKE | ECHOCTL;  in finalize_tty_attrs()
384 	G.tty_attrs.c_cc[VINTR] = CTL('C');  in finalize_tty_attrs()
385 	G.tty_attrs.c_cc[VQUIT] = CTL('\\');  in finalize_tty_attrs()
386 	G.tty_attrs.c_cc[VEOF] = CTL('D');  in finalize_tty_attrs()
387 	G.tty_attrs.c_cc[VEOL] = '\n';  in finalize_tty_attrs()
389 	G.tty_attrs.c_cc[VSWTC] = 0;  in finalize_tty_attrs()
392 	G.tty_attrs.c_cc[VSWTCH] = 0;  in finalize_tty_attrs()
394 	G.tty_attrs.c_cc[VKILL] = CTL('U');  in finalize_tty_attrs()
430 	G.tty_attrs.c_cc[VMIN] = 0; /* don't block reads (min read is 0 chars) */  in auto_baud()
438 	nread = safe_read(STDIN_FILENO, G.line_buf, sizeof(G.line_buf) - 1);  in auto_baud()
442 		G.line_buf[nread] = '\0';  in auto_baud()
443 		for (bp = G.line_buf; bp < G.line_buf + nread; bp++) {  in auto_baud()
447 					cfsetspeed(&G.tty_attrs, speed);  in auto_baud()
454 	G.tty_attrs.c_cc[VMIN] = 1; /* restore to value set by init_tty_attrs */  in auto_baud()
475 			print_login_issue(G.issue, G.tty_name);  in get_logname()
480 		bp = G.line_buf;  in get_logname()
495 				G.eol = c;  in get_logname()
499 				G.tty_attrs.c_cc[VERASE] = c;  in get_logname()
500 				if (bp > G.line_buf) {  in get_logname()
506 				while (bp > G.line_buf) {  in get_logname()
518 				if (G.numspeed > 1)  in get_logname()
524 				} else if ((int)(bp - G.line_buf) < sizeof(G.line_buf) - 1) {  in get_logname()
533 	} while (G.line_buf[0] == '\0');  /* while logname is empty */  in get_logname()
535 	return G.line_buf;  in get_logname()
557 	G.login = _PATH_LOGIN;    /* default login program */  in getty_main()
559 	G.issue = ISSUE;          /* default issue file */  in getty_main()
561 	G.eol = '\r';  in getty_main()
671 	if (tcgetattr(STDIN_FILENO, &G.tty_attrs) < 0)  in getty_main()
675 	update_utmp(pid, LOGIN_PROCESS, G.tty_name, "LOGIN", G.fakehost);  in getty_main()
679 	init_tty_attrs(G.speeds[0]);  in getty_main()
684 		full_write1_str(G.initstring);  in getty_main()
694 	alarm(G.timeout); /* if 0, alarm is not set */  in getty_main()
720 			baud_index = (baud_index + 1) % G.numspeed;  in getty_main()
721 			cfsetspeed(&G.tty_attrs, G.speeds[baud_index]);  in getty_main()
735 	BB_EXECLP(G.login, G.login, "--", logname, (char *)0);  in getty_main()
736 	bb_error_msg_and_die("can't execute '%s'", G.login);  in getty_main()