aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-alpha/termios.h
blob: 39e492c3bfa3fe33c78c20aa796c89888d6b702e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
#ifndef _ALPHA_TERMIOS_H
#define _ALPHA_TERMIOS_H

#include <asm/ioctls.h>
#include <asm/termbits.h>

struct sgttyb {
	char	sg_ispeed;
	char	sg_ospeed;
	char	sg_erase;
	char	sg_kill;
	short	sg_flags;
};

struct tchars {
	char	t_intrc;
	char	t_quitc;
	char	t_startc;
	char	t_stopc;
	char	t_eofc;
	char	t_brkc;
};

struct ltchars {
	char	t_suspc;
	char	t_dsuspc;
	char	t_rprntc;
	char	t_flushc;
	char	t_werasc;
	char	t_lnextc;
};

struct winsize {
	unsigned short ws_row;
	unsigned short ws_col;
	unsigned short ws_xpixel;
	unsigned short ws_ypixel;
};

#define NCC 8
struct termio {
	unsigned short c_iflag;		/* input mode flags */
	unsigned short c_oflag;		/* output mode flags */
	unsigned short c_cflag;		/* control mode flags */
	unsigned short c_lflag;		/* local mode flags */
	unsigned char c_line;		/* line discipline */
	unsigned char c_cc[NCC];	/* control characters */
};

/*
 * c_cc characters in the termio structure.  Oh, how I love being
 * backwardly compatible.  Notice that character 4 and 5 are
 * interpreted differently depending on whether ICANON is set in
 * c_lflag.  If it's set, they are used as _VEOF and _VEOL, otherwise
 * as _VMIN and V_TIME.  This is for compatibility with OSF/1 (which
 * is compatible with sysV)...
 */
#define _VINTR	0
#define _VQUIT	1
#define _VERASE	2
#define _VKILL	3
#define _VEOF	4
#define _VMIN	4
#define _VEOL	5
#define _VTIME	5
#define _VEOL2	6
#define _VSWTC	7

#ifdef __KERNEL__
/*	eof=^D		eol=\0		eol2=\0		erase=del
	werase=^W	kill=^U		reprint=^R	sxtc=\0
	intr=^C		quit=^\		susp=^Z		<OSF/1 VDSUSP>
	start=^Q	stop=^S		lnext=^V	discard=^U
	vmin=\1		vtime=\0
*/
#define INIT_C_CC "\004\000\000\177\027\025\022\000\003\034\032\000\021\023\026\025\001\000"

/*
 * Translate a "termio" structure into a "termios". Ugh.
 */

#define user_termio_to_kernel_termios(a_termios, u_termio)			\
({										\
	struct termios *k_termios = (a_termios);				\
	struct termio k_termio;							\
	int canon, ret;								\
										\
	ret = copy_from_user(&k_termio, u_termio, sizeof(k_termio));		\
	if (!ret) {								\
		/* Overwrite only the low bits.  */				\
		*(unsigned short *)&k_termios->c_iflag = k_termio.c_iflag;	\
		*(unsigned short *)&k_termios->c_oflag = k_termio.c_oflag;	\
		*(unsigned short *)&k_termios->c_cflag = k_termio.c_cflag;	\
		*(unsigned short *)&k_termios->c_lflag = k_termio.c_lflag;	\
		canon = k_termio.c_lflag & ICANON;				\
										\
		k_termios->c_cc[VINTR]  = k_termio.c_cc[_VINTR];		\
		k_termios->c_cc[VQUIT]  = k_termio.c_cc[_VQUIT];		\
		k_termios->c_cc[VERASE] = k_termio.c_cc[_VERASE];		\
		k_termios->c_cc[VKILL]  = k_termio.c_cc[_VKILL];		\
		k_termios->c_cc[VEOL2]  = k_termio.c_cc[_VEOL2];		\
		k_termios->c_cc[VSWTC]  = k_termio.c_cc[_VSWTC];		\
		k_termios->c_cc[canon ? VEOF : VMIN]  = k_termio.c_cc[_VEOF];	\
		k_termios->c_cc[canon ? VEOL : VTIME] = k_termio.c_cc[_VEOL];	\
	}									\
	ret;									\
})

/*
 * Translate a "termios" structure into a "termio". Ugh.
 *
 * Note the "fun" _VMIN overloading.
 */
#define kernel_termios_to_user_termio(u_termio, a_termios)		\
({									\
	struct termios *k_termios = (a_termios);			\
	struct termio k_termio;						\
	int canon;							\
									\
	k_termio.c_iflag = k_termios->c_iflag;				\
	k_termio.c_oflag = k_termios->c_oflag;				\
	k_termio.c_cflag = k_termios->c_cflag;				\
	canon = (k_termio.c_lflag = k_termios->c_lflag) & ICANON;	\
									\
	k_termio.c_line = k_termios->c_line;				\
	k_termio.c_cc[_VINTR]  = k_termios->c_cc[VINTR];		\
	k_termio.c_cc[_VQUIT]  = k_termios->c_cc[VQUIT];		\
	k_termio.c_cc[_VERASE] = k_termios->c_cc[VERASE];		\
	k_termio.c_cc[_VKILL]  = k_termios->c_cc[VKILL];		\
	k_termio.c_cc[_VEOF]   = k_termios->c_cc[canon ? VEOF : VMIN];	\
	k_termio.c_cc[_VEOL]   = k_termios->c_cc[canon ? VEOL : VTIME];	\
	k_termio.c_cc[_VEOL2]  = k_termios->c_cc[VEOL2];		\
	k_termio.c_cc[_VSWTC]  = k_termios->c_cc[VSWTC];		\
									\
	copy_to_user(u_termio, &k_termio, sizeof(k_termio));		\
})

#define user_termios_to_kernel_termios(k, u) \
	copy_from_user(k, u, sizeof(struct termios))

#define kernel_termios_to_user_termios(u, k) \
	copy_to_user(u, k, sizeof(struct termios))

#endif	/* __KERNEL__ */

#endif	/* _ALPHA_TERMIOS_H */