// SPDX-License-Identifier: GPL-2.0#include <linux/termios_internal.h> int user_termio_to_kernel_termios(struct ktermios *termios,						struct termio __user *termio){	struct termio v;	bool canon; 	if (copy_from_user(&v, termio, sizeof(struct termio)))		return -EFAULT; 	termios->c_iflag = (0xffff0000 & termios->c_iflag) | v.c_iflag;	termios->c_oflag = (0xffff0000 & termios->c_oflag) | v.c_oflag;	termios->c_cflag = (0xffff0000 & termios->c_cflag) | v.c_cflag;	termios->c_lflag = (0xffff0000 & termios->c_lflag) | v.c_lflag;	termios->c_line = (0xffff0000 & termios->c_lflag) | v.c_line; 	canon = v.c_lflag & ICANON;	termios->c_cc[VINTR]  = v.c_cc[_VINTR];	termios->c_cc[VQUIT]  = v.c_cc[_VQUIT];	termios->c_cc[VERASE] = v.c_cc[_VERASE];	termios->c_cc[VKILL]  = v.c_cc[_VKILL];	termios->c_cc[VEOL2]  = v.c_cc[_VEOL2];	termios->c_cc[VSWTC]  = v.c_cc[_VSWTC];	termios->c_cc[canon ? VEOF : VMIN]  = v.c_cc[_VEOF];	termios->c_cc[canon ? VEOL : VTIME] = v.c_cc[_VEOL]; 	return 0;} int kernel_termios_to_user_termio(struct termio __user *termio,						struct ktermios *termios){	struct termio v;	bool canon; 	memset(&v, 0, sizeof(struct termio));	v.c_iflag = termios->c_iflag;	v.c_oflag = termios->c_oflag;	v.c_cflag = termios->c_cflag;	v.c_lflag = termios->c_lflag;	v.c_line = termios->c_line; 	canon = v.c_lflag & ICANON;	v.c_cc[_VINTR]  = termios->c_cc[VINTR];	v.c_cc[_VQUIT]  = termios->c_cc[VQUIT];	v.c_cc[_VERASE] = termios->c_cc[VERASE];	v.c_cc[_VKILL]  = termios->c_cc[VKILL];	v.c_cc[_VEOF]   = termios->c_cc[canon ? VEOF : VMIN];	v.c_cc[_VEOL]   = termios->c_cc[canon ? VEOL : VTIME];	v.c_cc[_VEOL2]  = termios->c_cc[VEOL2];	v.c_cc[_VSWTC]  = termios->c_cc[VSWTC]; 	return copy_to_user(termio, &v, sizeof(struct termio));}