1 // SPDX-License-Identifier: GPL-2.0 1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/termios_internal.h> 2 #include <linux/termios_internal.h>
3 3
4 int user_termio_to_kernel_termios(struct kterm 4 int user_termio_to_kernel_termios(struct ktermios *termios,
5 5 struct termio __user *termio)
6 { 6 {
7 struct termio v; 7 struct termio v;
8 bool canon; 8 bool canon;
9 9
10 if (copy_from_user(&v, termio, sizeof( 10 if (copy_from_user(&v, termio, sizeof(struct termio)))
11 return -EFAULT; 11 return -EFAULT;
12 12
13 termios->c_iflag = (0xffff0000 & termi 13 termios->c_iflag = (0xffff0000 & termios->c_iflag) | v.c_iflag;
14 termios->c_oflag = (0xffff0000 & termi 14 termios->c_oflag = (0xffff0000 & termios->c_oflag) | v.c_oflag;
15 termios->c_cflag = (0xffff0000 & termi 15 termios->c_cflag = (0xffff0000 & termios->c_cflag) | v.c_cflag;
16 termios->c_lflag = (0xffff0000 & termi 16 termios->c_lflag = (0xffff0000 & termios->c_lflag) | v.c_lflag;
17 termios->c_line = (0xffff0000 & termio 17 termios->c_line = (0xffff0000 & termios->c_lflag) | v.c_line;
18 18
19 canon = v.c_lflag & ICANON; 19 canon = v.c_lflag & ICANON;
20 termios->c_cc[VINTR] = v.c_cc[_VINTR] 20 termios->c_cc[VINTR] = v.c_cc[_VINTR];
21 termios->c_cc[VQUIT] = v.c_cc[_VQUIT] 21 termios->c_cc[VQUIT] = v.c_cc[_VQUIT];
22 termios->c_cc[VERASE] = v.c_cc[_VERASE 22 termios->c_cc[VERASE] = v.c_cc[_VERASE];
23 termios->c_cc[VKILL] = v.c_cc[_VKILL] 23 termios->c_cc[VKILL] = v.c_cc[_VKILL];
24 termios->c_cc[VEOL2] = v.c_cc[_VEOL2] 24 termios->c_cc[VEOL2] = v.c_cc[_VEOL2];
25 termios->c_cc[VSWTC] = v.c_cc[_VSWTC] 25 termios->c_cc[VSWTC] = v.c_cc[_VSWTC];
26 termios->c_cc[canon ? VEOF : VMIN] = 26 termios->c_cc[canon ? VEOF : VMIN] = v.c_cc[_VEOF];
27 termios->c_cc[canon ? VEOL : VTIME] = 27 termios->c_cc[canon ? VEOL : VTIME] = v.c_cc[_VEOL];
28 28
29 return 0; 29 return 0;
30 } 30 }
31 31
32 int kernel_termios_to_user_termio(struct termi 32 int kernel_termios_to_user_termio(struct termio __user *termio,
33 33 struct ktermios *termios)
34 { 34 {
35 struct termio v; 35 struct termio v;
36 bool canon; 36 bool canon;
37 37
38 memset(&v, 0, sizeof(struct termio)); 38 memset(&v, 0, sizeof(struct termio));
39 v.c_iflag = termios->c_iflag; 39 v.c_iflag = termios->c_iflag;
40 v.c_oflag = termios->c_oflag; 40 v.c_oflag = termios->c_oflag;
41 v.c_cflag = termios->c_cflag; 41 v.c_cflag = termios->c_cflag;
42 v.c_lflag = termios->c_lflag; 42 v.c_lflag = termios->c_lflag;
43 v.c_line = termios->c_line; 43 v.c_line = termios->c_line;
44 44
45 canon = v.c_lflag & ICANON; 45 canon = v.c_lflag & ICANON;
46 v.c_cc[_VINTR] = termios->c_cc[VINTR] 46 v.c_cc[_VINTR] = termios->c_cc[VINTR];
47 v.c_cc[_VQUIT] = termios->c_cc[VQUIT] 47 v.c_cc[_VQUIT] = termios->c_cc[VQUIT];
48 v.c_cc[_VERASE] = termios->c_cc[VERASE 48 v.c_cc[_VERASE] = termios->c_cc[VERASE];
49 v.c_cc[_VKILL] = termios->c_cc[VKILL] 49 v.c_cc[_VKILL] = termios->c_cc[VKILL];
50 v.c_cc[_VEOF] = termios->c_cc[canon 50 v.c_cc[_VEOF] = termios->c_cc[canon ? VEOF : VMIN];
51 v.c_cc[_VEOL] = termios->c_cc[canon 51 v.c_cc[_VEOL] = termios->c_cc[canon ? VEOL : VTIME];
52 v.c_cc[_VEOL2] = termios->c_cc[VEOL2] 52 v.c_cc[_VEOL2] = termios->c_cc[VEOL2];
53 v.c_cc[_VSWTC] = termios->c_cc[VSWTC] 53 v.c_cc[_VSWTC] = termios->c_cc[VSWTC];
54 54
55 return copy_to_user(termio, &v, sizeof 55 return copy_to_user(termio, &v, sizeof(struct termio));
56 } 56 }
57 57
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