1/*
2 * Copyright (c) 2015 Cedric Hnyda <chnyda@suse.com>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of
7 * the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
17 */
18
19 /*
20  *  Create a virtual device (mouse), send events to /dev/uinput
21  *  and check that the events are well received in /dev/input/mice
22  */
23
24#include <linux/input.h>
25#include <linux/uinput.h>
26
27#include "test.h"
28#include "safe_macros.h"
29#include "lapi/fcntl.h"
30#include "input_helper.h"
31
32#define NB_TEST 10
33#define PS2_RIGHT_BTN 0x02
34
35static void setup(void);
36static void send_events(void);
37static int check_events(void);
38static void cleanup(void);
39
40static int fd, fd2;
41
42char *TCID = "input03";
43
44int main(int ac, char **av)
45{
46	int lc;
47	int pid;
48
49	tst_parse_opts(ac, av, NULL, NULL);
50
51	setup();
52
53	for (lc = 0; TEST_LOOPING(lc); ++lc) {
54		pid = tst_fork();
55
56		switch (pid) {
57		case 0:
58			send_events();
59			exit(0);
60		case -1:
61			tst_brkm(TBROK | TERRNO, cleanup, "fork() failed");
62		default:
63			if (check_events())
64				tst_resm(TFAIL, "Wrong data received");
65			else
66				tst_resm(TPASS,
67					"Data received in /dev/input/mice");
68		break;
69		}
70
71		SAFE_WAITPID(NULL, pid, NULL, 0);
72	}
73
74	cleanup();
75	tst_exit();
76}
77
78static void setup(void)
79{
80	tst_require_root();
81
82	fd = open_uinput();
83
84	setup_mouse_events(fd);
85	SAFE_IOCTL(NULL, fd, UI_SET_EVBIT, EV_KEY);
86	SAFE_IOCTL(NULL, fd, UI_SET_KEYBIT, BTN_RIGHT);
87
88	create_device(fd);
89
90	fd2 = SAFE_OPEN(NULL, "/dev/input/mice", O_RDONLY);
91}
92
93static void send_events(void)
94{
95	int nb;
96
97	for (nb = 0; nb < NB_TEST; ++nb) {
98		send_event(fd, EV_KEY, BTN_RIGHT, 1);
99		send_event(fd, EV_SYN, 0, 0);
100		usleep(1000);
101		send_event(fd, EV_KEY, BTN_RIGHT, 0);
102		send_event(fd, EV_SYN, 0, 0);
103		usleep(1000);
104	}
105}
106
107static int check_events(void)
108{
109	int nb, rd, i, pressed = 0;
110	char buf[30];
111
112	nb = 0;
113
114	while (nb < NB_TEST) {
115		rd = read(fd2, buf, sizeof(buf));
116
117		if (rd < 0)
118			tst_brkm(TBROK | TERRNO, NULL, "read() failed");
119
120		if (rd % 3) {
121			tst_resm(TINFO, "read() returned %i", rd);
122			return 1;
123		}
124
125		for (i = 0; i < rd / 3; i++) {
126			if (buf[3*i] & PS2_RIGHT_BTN)
127				pressed = 1;
128
129			if (pressed == 1 && !(buf[3*i] & PS2_RIGHT_BTN)) {
130				pressed = 0;
131				nb++;
132			}
133		}
134	}
135
136	return nb != NB_TEST;
137}
138
139static void cleanup(void)
140{
141	if (fd2 > 0 && close(fd2))
142		tst_resm(TWARN, "close(fd2) failed");
143
144	destroy_device(fd);
145}
146