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1 | /* termios.h: generic termios/termio user copying/translation |
2 | */ |
3 | |
4 | #ifndef _ASM_GENERIC_TERMIOS_BASE_H |
5 | #define _ASM_GENERIC_TERMIOS_BASE_H |
6 | |
7 | #include <asm/uaccess.h> |
8 | |
9 | #ifndef __ARCH_TERMIO_GETPUT |
10 | |
11 | /* |
12 | * Translate a "termio" structure into a "termios". Ugh. |
13 | */ |
14 | static inline int user_termio_to_kernel_termios(struct ktermios *termios, |
15 | struct termio __user *termio) |
16 | { |
17 | unsigned short tmp; |
18 | |
19 | if (get_user(tmp, &termio->c_iflag) < 0) |
20 | goto fault; |
21 | termios->c_iflag = (0xffff0000 & termios->c_iflag) | tmp; |
22 | |
23 | if (get_user(tmp, &termio->c_oflag) < 0) |
24 | goto fault; |
25 | termios->c_oflag = (0xffff0000 & termios->c_oflag) | tmp; |
26 | |
27 | if (get_user(tmp, &termio->c_cflag) < 0) |
28 | goto fault; |
29 | termios->c_cflag = (0xffff0000 & termios->c_cflag) | tmp; |
30 | |
31 | if (get_user(tmp, &termio->c_lflag) < 0) |
32 | goto fault; |
33 | termios->c_lflag = (0xffff0000 & termios->c_lflag) | tmp; |
34 | |
35 | if (get_user(termios->c_line, &termio->c_line) < 0) |
36 | goto fault; |
37 | |
38 | if (copy_from_user(termios->c_cc, termio->c_cc, NCC) != 0) |
39 | goto fault; |
40 | |
41 | return 0; |
42 | |
43 | fault: |
44 | return -EFAULT; |
45 | } |
46 | |
47 | /* |
48 | * Translate a "termios" structure into a "termio". Ugh. |
49 | */ |
50 | static inline int kernel_termios_to_user_termio(struct termio __user *termio, |
51 | struct ktermios *termios) |
52 | { |
53 | if (put_user(termios->c_iflag, &termio->c_iflag) < 0 || |
54 | put_user(termios->c_oflag, &termio->c_oflag) < 0 || |
55 | put_user(termios->c_cflag, &termio->c_cflag) < 0 || |
56 | put_user(termios->c_lflag, &termio->c_lflag) < 0 || |
57 | put_user(termios->c_line, &termio->c_line) < 0 || |
58 | copy_to_user(termio->c_cc, termios->c_cc, NCC) != 0) |
59 | return -EFAULT; |
60 | |
61 | return 0; |
62 | } |
63 | |
64 | #ifndef user_termios_to_kernel_termios |
65 | #define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios)) |
66 | #endif |
67 | |
68 | #ifndef kernel_termios_to_user_termios |
69 | #define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios)) |
70 | #endif |
71 | |
72 | #define user_termios_to_kernel_termios_1(k, u) copy_from_user(k, u, sizeof(struct termios)) |
73 | #define kernel_termios_to_user_termios_1(u, k) copy_to_user(u, k, sizeof(struct termios)) |
74 | |
75 | #endif /* __ARCH_TERMIO_GETPUT */ |
76 | |
77 | #endif /* _ASM_GENERIC_TERMIOS_BASE_H */ |
78 |
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