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1da177e4 LT |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (C) 1995, 1996, 2000, 2001 by Ralf Baechle | |
7 | * Copyright (C) 2000, 2001 Silicon Graphics, Inc. | |
8 | */ | |
9 | #ifndef _ASM_TERMIOS_H | |
10 | #define _ASM_TERMIOS_H | |
11 | ||
4ca98d39 | 12 | #include <asm/uaccess.h> |
61730c53 | 13 | #include <uapi/asm/termios.h> |
1da177e4 LT |
14 | |
15 | /* | |
16 | * intr=^C quit=^\ erase=del kill=^U | |
17 | * vmin=\1 vtime=\0 eol2=\0 swtc=\0 | |
18 | * start=^Q stop=^S susp=^Z vdsusp= | |
19 | * reprint=^R discard=^U werase=^W lnext=^V | |
20 | * eof=^D eol=\0 | |
21 | */ | |
22 | #define INIT_C_CC "\003\034\177\025\1\0\0\0\021\023\032\0\022\017\027\026\004\0" | |
1da177e4 LT |
23 | |
24 | #include <linux/string.h> | |
25 | ||
26 | /* | |
27 | * Translate a "termio" structure into a "termios". Ugh. | |
28 | */ | |
732f0462 RB |
29 | static inline int user_termio_to_kernel_termios(struct ktermios *termios, |
30 | struct termio __user *termio) | |
31 | { | |
32 | unsigned short iflag, oflag, cflag, lflag; | |
33 | unsigned int err; | |
34 | ||
35 | if (!access_ok(VERIFY_READ, termio, sizeof(struct termio))) | |
36 | return -EFAULT; | |
37 | ||
38 | err = __get_user(iflag, &termio->c_iflag); | |
39 | termios->c_iflag = (termios->c_iflag & 0xffff0000) | iflag; | |
40 | err |=__get_user(oflag, &termio->c_oflag); | |
41 | termios->c_oflag = (termios->c_oflag & 0xffff0000) | oflag; | |
42 | err |=__get_user(cflag, &termio->c_cflag); | |
43 | termios->c_cflag = (termios->c_cflag & 0xffff0000) | cflag; | |
44 | err |=__get_user(lflag, &termio->c_lflag); | |
45 | termios->c_lflag = (termios->c_lflag & 0xffff0000) | lflag; | |
46 | err |=__get_user(termios->c_line, &termio->c_line); | |
47 | if (err) | |
48 | return -EFAULT; | |
49 | ||
50 | if (__copy_from_user(termios->c_cc, termio->c_cc, NCC)) | |
51 | return -EFAULT; | |
52 | ||
53 | return 0; | |
54 | } | |
1da177e4 LT |
55 | |
56 | /* | |
57 | * Translate a "termios" structure into a "termio". Ugh. | |
58 | */ | |
732f0462 RB |
59 | static inline int kernel_termios_to_user_termio(struct termio __user *termio, |
60 | struct ktermios *termios) | |
61 | { | |
62 | int err; | |
63 | ||
64 | if (!access_ok(VERIFY_WRITE, termio, sizeof(struct termio))) | |
65 | return -EFAULT; | |
66 | ||
67 | err = __put_user(termios->c_iflag, &termio->c_iflag); | |
68 | err |= __put_user(termios->c_oflag, &termio->c_oflag); | |
69 | err |= __put_user(termios->c_cflag, &termio->c_cflag); | |
70 | err |= __put_user(termios->c_lflag, &termio->c_lflag); | |
71 | err |= __put_user(termios->c_line, &termio->c_line); | |
72 | if (err) | |
73 | return -EFAULT; | |
74 | ||
75 | if (__copy_to_user(termio->c_cc, termios->c_cc, NCC)) | |
76 | return -EFAULT; | |
77 | ||
78 | return 0; | |
79 | } | |
80 | ||
81 | static inline int user_termios_to_kernel_termios(struct ktermios __user *k, | |
82 | struct termios2 *u) | |
83 | { | |
84 | return copy_from_user(k, u, sizeof(struct termios2)) ? -EFAULT : 0; | |
85 | } | |
86 | ||
87 | static inline int kernel_termios_to_user_termios(struct termios2 __user *u, | |
88 | struct ktermios *k) | |
89 | { | |
90 | return copy_to_user(u, k, sizeof(struct termios2)) ? -EFAULT : 0; | |
91 | } | |
92 | ||
93 | static inline int user_termios_to_kernel_termios_1(struct ktermios *k, | |
94 | struct termios __user *u) | |
95 | { | |
96 | return copy_from_user(k, u, sizeof(struct termios)) ? -EFAULT : 0; | |
97 | } | |
98 | ||
99 | static inline int kernel_termios_to_user_termios_1(struct termios __user *u, | |
100 | struct ktermios *k) | |
101 | { | |
102 | return copy_to_user(u, k, sizeof(struct termios)) ? -EFAULT : 0; | |
103 | } | |
1da177e4 | 104 | |
1da177e4 | 105 | #endif /* _ASM_TERMIOS_H */ |