1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public
3*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive
4*4882a593Smuzhiyun * for more details.
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Copyright (C) 1995, 1996, 2000, 2001 by Ralf Baechle
7*4882a593Smuzhiyun * Copyright (C) 2000, 2001 Silicon Graphics, Inc.
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun #ifndef _ASM_TERMIOS_H
10*4882a593Smuzhiyun #define _ASM_TERMIOS_H
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/uaccess.h>
13*4882a593Smuzhiyun #include <uapi/asm/termios.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun /*
16*4882a593Smuzhiyun * intr=^C quit=^\ erase=del kill=^U
17*4882a593Smuzhiyun * vmin=\1 vtime=\0 eol2=\0 swtc=\0
18*4882a593Smuzhiyun * start=^Q stop=^S susp=^Z vdsusp=
19*4882a593Smuzhiyun * reprint=^R discard=^U werase=^W lnext=^V
20*4882a593Smuzhiyun * eof=^D eol=\0
21*4882a593Smuzhiyun */
22*4882a593Smuzhiyun #define INIT_C_CC "\003\034\177\025\1\0\0\0\021\023\032\0\022\017\027\026\004\0"
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun #include <linux/string.h>
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun /*
27*4882a593Smuzhiyun * Translate a "termio" structure into a "termios". Ugh.
28*4882a593Smuzhiyun */
user_termio_to_kernel_termios(struct ktermios * termios,struct termio __user * termio)29*4882a593Smuzhiyun static inline int user_termio_to_kernel_termios(struct ktermios *termios,
30*4882a593Smuzhiyun struct termio __user *termio)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun unsigned short iflag, oflag, cflag, lflag;
33*4882a593Smuzhiyun unsigned int err;
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun if (!access_ok(termio, sizeof(struct termio)))
36*4882a593Smuzhiyun return -EFAULT;
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun err = __get_user(iflag, &termio->c_iflag);
39*4882a593Smuzhiyun termios->c_iflag = (termios->c_iflag & 0xffff0000) | iflag;
40*4882a593Smuzhiyun err |=__get_user(oflag, &termio->c_oflag);
41*4882a593Smuzhiyun termios->c_oflag = (termios->c_oflag & 0xffff0000) | oflag;
42*4882a593Smuzhiyun err |=__get_user(cflag, &termio->c_cflag);
43*4882a593Smuzhiyun termios->c_cflag = (termios->c_cflag & 0xffff0000) | cflag;
44*4882a593Smuzhiyun err |=__get_user(lflag, &termio->c_lflag);
45*4882a593Smuzhiyun termios->c_lflag = (termios->c_lflag & 0xffff0000) | lflag;
46*4882a593Smuzhiyun err |=__get_user(termios->c_line, &termio->c_line);
47*4882a593Smuzhiyun if (err)
48*4882a593Smuzhiyun return -EFAULT;
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun if (__copy_from_user(termios->c_cc, termio->c_cc, NCC))
51*4882a593Smuzhiyun return -EFAULT;
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun return 0;
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun /*
57*4882a593Smuzhiyun * Translate a "termios" structure into a "termio". Ugh.
58*4882a593Smuzhiyun */
kernel_termios_to_user_termio(struct termio __user * termio,struct ktermios * termios)59*4882a593Smuzhiyun static inline int kernel_termios_to_user_termio(struct termio __user *termio,
60*4882a593Smuzhiyun struct ktermios *termios)
61*4882a593Smuzhiyun {
62*4882a593Smuzhiyun int err;
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun if (!access_ok(termio, sizeof(struct termio)))
65*4882a593Smuzhiyun return -EFAULT;
66*4882a593Smuzhiyun
67*4882a593Smuzhiyun err = __put_user(termios->c_iflag, &termio->c_iflag);
68*4882a593Smuzhiyun err |= __put_user(termios->c_oflag, &termio->c_oflag);
69*4882a593Smuzhiyun err |= __put_user(termios->c_cflag, &termio->c_cflag);
70*4882a593Smuzhiyun err |= __put_user(termios->c_lflag, &termio->c_lflag);
71*4882a593Smuzhiyun err |= __put_user(termios->c_line, &termio->c_line);
72*4882a593Smuzhiyun if (err)
73*4882a593Smuzhiyun return -EFAULT;
74*4882a593Smuzhiyun
75*4882a593Smuzhiyun if (__copy_to_user(termio->c_cc, termios->c_cc, NCC))
76*4882a593Smuzhiyun return -EFAULT;
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun return 0;
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
user_termios_to_kernel_termios(struct ktermios __user * k,struct termios2 * u)81*4882a593Smuzhiyun static inline int user_termios_to_kernel_termios(struct ktermios __user *k,
82*4882a593Smuzhiyun struct termios2 *u)
83*4882a593Smuzhiyun {
84*4882a593Smuzhiyun return copy_from_user(k, u, sizeof(struct termios2)) ? -EFAULT : 0;
85*4882a593Smuzhiyun }
86*4882a593Smuzhiyun
kernel_termios_to_user_termios(struct termios2 __user * u,struct ktermios * k)87*4882a593Smuzhiyun static inline int kernel_termios_to_user_termios(struct termios2 __user *u,
88*4882a593Smuzhiyun struct ktermios *k)
89*4882a593Smuzhiyun {
90*4882a593Smuzhiyun return copy_to_user(u, k, sizeof(struct termios2)) ? -EFAULT : 0;
91*4882a593Smuzhiyun }
92*4882a593Smuzhiyun
user_termios_to_kernel_termios_1(struct ktermios * k,struct termios __user * u)93*4882a593Smuzhiyun static inline int user_termios_to_kernel_termios_1(struct ktermios *k,
94*4882a593Smuzhiyun struct termios __user *u)
95*4882a593Smuzhiyun {
96*4882a593Smuzhiyun return copy_from_user(k, u, sizeof(struct termios)) ? -EFAULT : 0;
97*4882a593Smuzhiyun }
98*4882a593Smuzhiyun
kernel_termios_to_user_termios_1(struct termios __user * u,struct ktermios * k)99*4882a593Smuzhiyun static inline int kernel_termios_to_user_termios_1(struct termios __user *u,
100*4882a593Smuzhiyun struct ktermios *k)
101*4882a593Smuzhiyun {
102*4882a593Smuzhiyun return copy_to_user(u, k, sizeof(struct termios)) ? -EFAULT : 0;
103*4882a593Smuzhiyun }
104*4882a593Smuzhiyun
105*4882a593Smuzhiyun #endif /* _ASM_TERMIOS_H */
106