termios.h revision 732f0462d59721764843783d790a613613287b33 
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
12#include <linux/errno.h>
13#include <asm/termbits.h>
14#include <asm/ioctls.h>
15
16struct sgttyb {
17	char	sg_ispeed;
18	char	sg_ospeed;
19	char	sg_erase;
20	char	sg_kill;
21	int	sg_flags;	/* SGI special - int, not short */
22};
23
24struct tchars {
25	char	t_intrc;
26	char	t_quitc;
27	char	t_startc;
28	char	t_stopc;
29	char	t_eofc;
30	char	t_brkc;
31};
32
33struct ltchars {
34        char    t_suspc;        /* stop process signal */
35        char    t_dsuspc;       /* delayed stop process signal */
36        char    t_rprntc;       /* reprint line */
37        char    t_flushc;       /* flush output (toggles) */
38        char    t_werasc;       /* word erase */
39        char    t_lnextc;       /* literal next character */
40};
41
42/* TIOCGSIZE, TIOCSSIZE not defined yet.  Only needed for SunOS source
43   compatibility anyway ... */
44
45struct winsize {
46	unsigned short ws_row;
47	unsigned short ws_col;
48	unsigned short ws_xpixel;
49	unsigned short ws_ypixel;
50};
51
52#define NCC	8
53struct termio {
54	unsigned short c_iflag;		/* input mode flags */
55	unsigned short c_oflag;		/* output mode flags */
56	unsigned short c_cflag;		/* control mode flags */
57	unsigned short c_lflag;		/* local mode flags */
58	char c_line;			/* line discipline */
59	unsigned char c_cc[NCCS];	/* control characters */
60};
61
62#ifdef __KERNEL__
63#include <linux/module.h>
64
65/*
66 *	intr=^C		quit=^\		erase=del	kill=^U
67 *	vmin=\1		vtime=\0	eol2=\0		swtc=\0
68 *	start=^Q	stop=^S		susp=^Z		vdsusp=
69 *	reprint=^R	discard=^U	werase=^W	lnext=^V
70 *	eof=^D		eol=\0
71 */
72#define INIT_C_CC "\003\034\177\025\1\0\0\0\021\023\032\0\022\017\027\026\004\0"
73#endif
74
75/* modem lines */
76#define TIOCM_LE	0x001		/* line enable */
77#define TIOCM_DTR	0x002		/* data terminal ready */
78#define TIOCM_RTS	0x004		/* request to send */
79#define TIOCM_ST	0x010		/* secondary transmit */
80#define TIOCM_SR	0x020		/* secondary receive */
81#define TIOCM_CTS	0x040		/* clear to send */
82#define TIOCM_CAR	0x100		/* carrier detect */
83#define TIOCM_CD	TIOCM_CAR
84#define TIOCM_RNG	0x200		/* ring */
85#define TIOCM_RI	TIOCM_RNG
86#define TIOCM_DSR	0x400		/* data set ready */
87#define TIOCM_OUT1	0x2000
88#define TIOCM_OUT2	0x4000
89#define TIOCM_LOOP	0x8000
90
91#ifdef __KERNEL__
92
93#include <linux/string.h>
94
95/*
96 * Translate a "termio" structure into a "termios". Ugh.
97 */
98static inline int user_termio_to_kernel_termios(struct ktermios *termios,
99	struct termio __user *termio)
100{
101	unsigned short iflag, oflag, cflag, lflag;
102	unsigned int err;
103
104	if (!access_ok(VERIFY_READ, termio, sizeof(struct termio)))
105		return -EFAULT;
106
107	err = __get_user(iflag, &termio->c_iflag);
108	termios->c_iflag = (termios->c_iflag & 0xffff0000) | iflag;
109	err |=__get_user(oflag, &termio->c_oflag);
110	termios->c_oflag = (termios->c_oflag & 0xffff0000) | oflag;
111	err |=__get_user(cflag, &termio->c_cflag);
112	termios->c_cflag = (termios->c_cflag & 0xffff0000) | cflag;
113	err |=__get_user(lflag, &termio->c_lflag);
114	termios->c_lflag = (termios->c_lflag & 0xffff0000) | lflag;
115	err |=__get_user(termios->c_line, &termio->c_line);
116	if (err)
117		return -EFAULT;
118
119	if (__copy_from_user(termios->c_cc, termio->c_cc, NCC))
120		return -EFAULT;
121
122	return 0;
123}
124
125/*
126 * Translate a "termios" structure into a "termio". Ugh.
127 */
128static inline int kernel_termios_to_user_termio(struct termio __user *termio,
129	struct ktermios *termios)
130{
131	int err;
132
133	if (!access_ok(VERIFY_WRITE, termio, sizeof(struct termio)))
134		return -EFAULT;
135
136	err = __put_user(termios->c_iflag, &termio->c_iflag);
137	err |= __put_user(termios->c_oflag, &termio->c_oflag);
138	err |= __put_user(termios->c_cflag, &termio->c_cflag);
139	err |= __put_user(termios->c_lflag, &termio->c_lflag);
140	err |= __put_user(termios->c_line, &termio->c_line);
141	if (err)
142		return -EFAULT;
143
144	if (__copy_to_user(termio->c_cc, termios->c_cc, NCC))
145		return -EFAULT;
146
147	return 0;
148}
149
150static inline int user_termios_to_kernel_termios(struct ktermios __user *k,
151	struct termios2 *u)
152{
153	return copy_from_user(k, u, sizeof(struct termios2)) ? -EFAULT : 0;
154}
155
156static inline int kernel_termios_to_user_termios(struct termios2 __user *u,
157	struct ktermios *k)
158{
159	return copy_to_user(u, k, sizeof(struct termios2)) ? -EFAULT : 0;
160}
161
162static inline int user_termios_to_kernel_termios_1(struct ktermios *k,
163	struct termios __user *u)
164{
165	return copy_from_user(k, u, sizeof(struct termios)) ? -EFAULT : 0;
166}
167
168static inline int kernel_termios_to_user_termios_1(struct termios __user *u,
169	struct ktermios *k)
170{
171	return copy_to_user(u, k, sizeof(struct termios)) ? -EFAULT : 0;
172}
173
174#endif /* defined(__KERNEL__) */
175
176#endif /* _ASM_TERMIOS_H */
177