projects / thirdparty / kernel / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 6103ec56 AB |
2 | #ifndef _ASM_GENERIC_TERMIOS_H |
| 3 | #define _ASM_GENERIC_TERMIOS_H | |
| 6103ec56 | 4 | |
| 6103ec56 | 5 | |
| 7c0f6ba6 | 6 | #include <linux/uaccess.h> |
| 8a1ab315 | 7 | #include <uapi/asm-generic/termios.h> |
| 6103ec56 AB |
8 | |
| 9 | /* intr=^C quit=^\ erase=del kill=^U | |
| 10 | eof=^D vtime=\0 vmin=\1 sxtc=\0 | |
| 11 | start=^Q stop=^S susp=^Z eol=\0 | |
| 12 | reprint=^R discard=^U werase=^W lnext=^V | |
| 13 | eol2=\0 | |
| 14 | */ | |
| 15 | #define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0" | |
| 16 | ||
| 17 | /* | |
| 18 | * Translate a "termio" structure into a "termios". Ugh. | |
| 19 | */ | |
| 20 | static inline int user_termio_to_kernel_termios(struct ktermios *termios, | |
| 21 | const struct termio __user *termio) | |
| 22 | { | |
| 23 | unsigned short tmp; | |
| 24 | ||
| 25 | if (get_user(tmp, &termio->c_iflag) < 0) | |
| 26 | goto fault; | |
| 27 | termios->c_iflag = (0xffff0000 & termios->c_iflag) | tmp; | |
| 28 | ||
| 29 | if (get_user(tmp, &termio->c_oflag) < 0) | |
| 30 | goto fault; | |
| 31 | termios->c_oflag = (0xffff0000 & termios->c_oflag) | tmp; | |
| 32 | ||
| 33 | if (get_user(tmp, &termio->c_cflag) < 0) | |
| 34 | goto fault; | |
| 35 | termios->c_cflag = (0xffff0000 & termios->c_cflag) | tmp; | |
| 36 | ||
| 37 | if (get_user(tmp, &termio->c_lflag) < 0) | |
| 38 | goto fault; | |
| 39 | termios->c_lflag = (0xffff0000 & termios->c_lflag) | tmp; | |
| 40 | ||
| 41 | if (get_user(termios->c_line, &termio->c_line) < 0) | |
| 42 | goto fault; | |
| 43 | ||
| 44 | if (copy_from_user(termios->c_cc, termio->c_cc, NCC) != 0) | |
| 45 | goto fault; | |
| 46 | ||
| 47 | return 0; | |
| 48 | ||
| 49 | fault: | |
| 50 | return -EFAULT; | |
| 51 | } | |
| 52 | ||
| 53 | /* | |
| 54 | * Translate a "termios" structure into a "termio". Ugh. | |
| 55 | */ | |
| 56 | static inline int kernel_termios_to_user_termio(struct termio __user *termio, | |
| 57 | struct ktermios *termios) | |
| 58 | { | |
| 59 | if (put_user(termios->c_iflag, &termio->c_iflag) < 0 || | |
| 60 | put_user(termios->c_oflag, &termio->c_oflag) < 0 || | |
| 61 | put_user(termios->c_cflag, &termio->c_cflag) < 0 || | |
| 62 | put_user(termios->c_lflag, &termio->c_lflag) < 0 || | |
| 63 | put_user(termios->c_line, &termio->c_line) < 0 || | |
| 64 | copy_to_user(termio->c_cc, termios->c_cc, NCC) != 0) | |
| 65 | return -EFAULT; | |
| 66 | ||
| 67 | return 0; | |
| 68 | } | |
| 69 | ||
| 70 | #ifdef TCGETS2 | |
| 71 | static inline int user_termios_to_kernel_termios(struct ktermios *k, | |
| 72 | struct termios2 __user *u) | |
| 73 | { | |
| 74 | return copy_from_user(k, u, sizeof(struct termios2)); | |
| 75 | } | |
| 76 | ||
| 77 | static inline int kernel_termios_to_user_termios(struct termios2 __user *u, | |
| 78 | struct ktermios *k) | |
| 79 | { | |
| 80 | return copy_to_user(u, k, sizeof(struct termios2)); | |
| 81 | } | |
| 82 | ||
| 83 | static inline int user_termios_to_kernel_termios_1(struct ktermios *k, | |
| 84 | struct termios __user *u) | |
| 85 | { | |
| 86 | return copy_from_user(k, u, sizeof(struct termios)); | |
| 87 | } | |
| 88 | ||
| 89 | static inline int kernel_termios_to_user_termios_1(struct termios __user *u, | |
| 90 | struct ktermios *k) | |
| 91 | { | |
| 92 | return copy_to_user(u, k, sizeof(struct termios)); | |
| 93 | } | |
| 94 | #else /* TCGETS2 */ | |
| 95 | static inline int user_termios_to_kernel_termios(struct ktermios *k, | |
| 96 | struct termios __user *u) | |
| 97 | { | |
| 98 | return copy_from_user(k, u, sizeof(struct termios)); | |
| 99 | } | |
| 100 | ||
| 101 | static inline int kernel_termios_to_user_termios(struct termios __user *u, | |
| 102 | struct ktermios *k) | |
| 103 | { | |
| 104 | return copy_to_user(u, k, sizeof(struct termios)); | |
| 105 | } | |
| 106 | #endif /* TCGETS2 */ | |
| 107 | ||
| 6103ec56 | 108 | #endif /* _ASM_GENERIC_TERMIOS_H */ |