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