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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657// 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));}