projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* termios.h: generic termios/termio user copying/translation |
| 2 | */ | |
| 3 | ||
| 63b852a6 AB |
4 | #ifndef _ASM_GENERIC_TERMIOS_BASE_H |
| 5 | #define _ASM_GENERIC_TERMIOS_BASE_H | |
| 1da177e4 LT |
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 | ||
| aa7738a5 | 64 | #ifndef user_termios_to_kernel_termios |
| 1da177e4 | 65 | #define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios)) |
| aa7738a5 HC |
66 | #endif |
| 67 | ||
| 68 | #ifndef kernel_termios_to_user_termios | |
| 1da177e4 | 69 | #define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios)) |
| aa7738a5 HC |
70 | #endif |
| 71 | ||
| b0052fca PM |
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)) | |
| 1da177e4 LT |
74 | |
| 75 | #endif /* __ARCH_TERMIO_GETPUT */ | |
| 76 | ||
| 63b852a6 | 77 | #endif /* _ASM_GENERIC_TERMIOS_BASE_H */ |