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Commit | Line | Data |
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1da177e4 LT |
1 | /* termios.h: generic termios/termio user copying/translation |
2 | */ | |
3 | ||
4 | #ifndef _ASM_GENERIC_TERMIOS_H | |
5 | #define _ASM_GENERIC_TERMIOS_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 | */ | |
606d099c | 14 | static inline int user_termio_to_kernel_termios(struct ktermios *termios, |
1da177e4 LT |
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, | |
606d099c | 51 | struct ktermios *termios) |
1da177e4 LT |
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 | #define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios)) | |
65 | #define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios)) | |
b0052fca PM |
66 | #define user_termios_to_kernel_termios_1(k, u) copy_from_user(k, u, sizeof(struct termios)) |
67 | #define kernel_termios_to_user_termios_1(u, k) copy_to_user(u, k, sizeof(struct termios)) | |
1da177e4 LT |
68 | |
69 | #endif /* __ARCH_TERMIO_GETPUT */ | |
70 | ||
71 | #endif /* _ASM_GENERIC_TERMIOS_H */ |