2  * Copyright 2019-2023,2024 Thomas E. Dickey                                *
5  * Permission is hereby granted, free of charge, to any person obtaining a  *
6  * copy of this software and associated documentation files (the            *
10  * copies of the Software, and to permit persons to whom the Software is    *
14  * in all copies or substantial portions of the Software.                   *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
17  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
24  * Except as contained in this notice, the name(s) of the above copyright   *
50 /* they neglected to define struct winsize in termios.h -- it is only
129  * Mode-setting logic
134  * commonly-altered ones are defined.
149 /* control-character defaults */
182 #define DISABLED(val)   (((_POSIX_VDISABLE != -1) \
192     tty_settings->c_cc[item] = CHK(tty_settings->c_cc[item], value)
315     clear_flags(tty_settings->c_iflag, (IGNBRK  in reset_tty_settings()
325     set_flags(tty_settings->c_iflag, (BRKINT  in reset_tty_settings()
331     clear_flags(tty_settings->c_oflag, (0  in reset_tty_settings()
345     set_flags(tty_settings->c_oflag, (OPOST  in reset_tty_settings()
351     if (ioctl(fd, TIOCMGET, &modem_bits) == -1)  in reset_tty_settings()
354     /* cannot check - use the behavior from tset */  in reset_tty_settings()
357     clear_flags(tty_settings->c_cflag, mask);  in reset_tty_settings()
359     set_flags(tty_settings->c_cflag, (CS8 | CREAD));  in reset_tty_settings()
360     clear_flags(tty_settings->c_lflag, (ECHONL  in reset_tty_settings()
366     set_flags(tty_settings->c_lflag, (ISIG  in reset_tty_settings()
401  * Update the values of the erase, interrupt, and kill characters in the TTY
404  * SVr4 tset (e.g., Solaris 2.5) only modifies the intr, quit or erase
418     if (DISABLED(tty_settings->c_cc[VERASE]) || my_erase >= 0) {  in set_control_chars()
419 	tty_settings->c_cc[VERASE] = UChar((my_erase >= 0)  in set_control_chars()
424     if (DISABLED(tty_settings->c_cc[VINTR]) || my_intr >= 0) {  in set_control_chars()
425 	tty_settings->c_cc[VINTR] = UChar((my_intr >= 0)  in set_control_chars()
430     if (DISABLED(tty_settings->c_cc[VKILL]) || my_kill >= 0) {  in set_control_chars()
431 	tty_settings->c_cc[VKILL] = UChar((my_kill >= 0)  in set_control_chars()
448     set_flags(tty_settings->c_oflag, ONLCR);  in set_conversions()
449     set_flags(tty_settings->c_iflag, ICRNL);  in set_conversions()
450     set_flags(tty_settings->c_lflag, ECHO);  in set_conversions()
451     set_flags(tty_settings->c_oflag, OXTABS);  in set_conversions()
456 	clear_flags(tty_settings->c_oflag, ONLCR);  in set_conversions()
457 	clear_flags(tty_settings->c_iflag, ICRNL);  in set_conversions()
462 	clear_flags(tty_settings->c_oflag, OXTABS);  in set_conversions()
464     set_flags(tty_settings->c_lflag, (ECHOE | ECHOK));  in set_conversions()
493  * This is done before 'if' and 'is', so they can recover in case of error.
532 	old_settings->c_oflag & (TAB3 | ONLCR | OCRNL | ONLRET)) {  in send_init_strings()
533 	old_settings->c_oflag &= (TAB3 | ONLCR | OCRNL | ONLRET);  in send_init_strings()
555 	    need_flush |= sent_string(TIPARM_2(set_lr_margin, 0, columns - 1));  in send_init_strings()
563 					       columns - 1));  in send_init_strings()
572 						   columns - 1));  in send_init_strings()
574 		for (i = 0; i < columns - 1; i++) {  in send_init_strings()
616     newer = new_settings->c_cc[which];  in show_tty_change()
617     older = old_settings->c_cc[which];  in show_tty_change()
638 	(void) fprintf(stderr, "control-%c (^%c).\n", UChar(newer), UChar(newer));  in show_tty_change()
676  * Set window size if not set already, but update our copy of the values if the