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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright (C) 2014 David Herrmann <dh.herrmann@gmail.com>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#pragma once
#include <inttypes.h>
#include <libudev.h>
#include <linux/input.h>
#include <stdbool.h>
#include <stdlib.h>
#include <systemd/sd-bus.h>
#include <systemd/sd-event.h>
#include "hashmap.h"
#include "idev.h"
#include "list.h"
#include "util.h"
typedef struct idev_link idev_link;
typedef struct idev_device_vtable idev_device_vtable;
typedef struct idev_element idev_element;
typedef struct idev_element_vtable idev_element_vtable;
/*
* Evdev Elements
*/
bool idev_is_evdev(idev_element *e);
idev_element *idev_find_evdev(idev_session *s, dev_t devnum);
int idev_evdev_new(idev_element **out, idev_session *s, struct udev_device *ud);
/*
* Element Links
*/
struct idev_link {
/* element-to-device connection */
LIST_FIELDS(idev_link, links_by_element);
idev_element *element;
/* device-to-element connection */
LIST_FIELDS(idev_link, links_by_device);
idev_device *device;
};
/*
* Devices
*/
struct idev_device_vtable {
void (*free) (idev_device *d);
void (*attach) (idev_device *d, idev_link *l);
void (*detach) (idev_device *d, idev_link *l);
int (*feed) (idev_device *d, idev_data *data);
};
struct idev_device {
const idev_device_vtable *vtable;
idev_session *session;
char *name;
LIST_HEAD(idev_link, links);
bool public : 1;
bool enabled : 1;
};
#define IDEV_DEVICE_INIT(_vtable, _session) ((idev_device){ \
.vtable = (_vtable), \
.session = (_session), \
})
idev_device *idev_find_device(idev_session *s, const char *name);
int idev_device_add(idev_device *d, const char *name);
idev_device *idev_device_free(idev_device *d);
DEFINE_TRIVIAL_CLEANUP_FUNC(idev_device*, idev_device_free);
int idev_device_feed(idev_device *d, idev_data *data);
void idev_device_feedback(idev_device *d, idev_data *data);
/*
* Elements
*/
struct idev_element_vtable {
void (*free) (idev_element *e);
void (*enable) (idev_element *e);
void (*disable) (idev_element *e);
void (*open) (idev_element *e);
void (*close) (idev_element *e);
void (*feedback) (idev_element *e, idev_data *data);
};
struct idev_element {
const idev_element_vtable *vtable;
idev_session *session;
unsigned long n_open;
char *name;
LIST_HEAD(idev_link, links);
bool enabled : 1;
bool readable : 1;
bool writable : 1;
};
#define IDEV_ELEMENT_INIT(_vtable, _session) ((idev_element){ \
.vtable = (_vtable), \
.session = (_session), \
})
idev_element *idev_find_element(idev_session *s, const char *name);
int idev_element_add(idev_element *e, const char *name);
idev_element *idev_element_free(idev_element *e);
DEFINE_TRIVIAL_CLEANUP_FUNC(idev_element*, idev_element_free);
int idev_element_feed(idev_element *e, idev_data *data);
void idev_element_feedback(idev_element *e, idev_data *data);
/*
* Sessions
*/
struct idev_session {
idev_context *context;
char *name;
char *path;
Hashmap *element_map;
Hashmap *device_map;
idev_event_fn event_fn;
void *userdata;
bool custom : 1;
bool managed : 1;
bool enabled : 1;
};
idev_session *idev_find_session(idev_context *c, const char *name);
int idev_session_raise_device_data(idev_session *s, idev_device *d, idev_data *data);
/*
* Contexts
*/
struct idev_context {
unsigned long ref;
sd_event *event;
sd_bus *sysbus;
Hashmap *session_map;
Hashmap *data_map;
};
|
