1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2015 Cedric Hnyda <chnyda@suse.com>
4 * Copyright (C) 2024 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
5 */
6
7 /*\
8 * [Description]
9 *
10 * Verify that /dev/input/mice receive events sent from a virtual device,
11 * that in our case is a mouse. The events are a sequence of mouse right click.
12 */
13
14 #include <linux/uinput.h>
15
16 #include "input_common.h"
17
18 #define NUM_EVENTS 10
19 #define PS2_RIGHT_BTN 0x02
20 #define MOUSE_DEV "/dev/input/mice"
21
22 static int fd_send = -1;
23 static int fd_recv = -1;
24
recv_data(void)25 static void recv_data(void)
26 {
27 tst_res(TINFO, "Reading events back");
28
29 char buf[30];
30 int events = 0;
31 int pressed = 0;
32 int num_bytes = 0;
33
34 TST_CHECKPOINT_WAKE(0);
35
36 while (events < NUM_EVENTS) {
37 memset(buf, 0, sizeof(buf));
38
39 num_bytes = SAFE_READ(0, fd_recv, buf, sizeof(buf));
40
41 for (int i = 0; i < num_bytes / 3; i++) {
42 if (buf[3*i] & PS2_RIGHT_BTN)
43 pressed = 1;
44
45 if (pressed == 1 && !(buf[3*i] & PS2_RIGHT_BTN)) {
46 pressed = 0;
47 events++;
48 }
49 }
50 }
51
52 TST_EXP_EQ_LI(events, NUM_EVENTS);
53 }
54
send_mouse_events(void)55 static void send_mouse_events(void)
56 {
57 tst_res(TINFO, "Sending right click");
58
59 TST_CHECKPOINT_WAIT(0);
60
61 for (int i = 0; i < NUM_EVENTS; i++) {
62 send_event(fd_send, EV_KEY, BTN_RIGHT, 1);
63 send_event(fd_send, EV_SYN, 0, 0);
64 usleep(1000);
65
66 send_event(fd_send, EV_KEY, BTN_RIGHT, 0);
67 send_event(fd_send, EV_SYN, 0, 0);
68 usleep(1000);
69 }
70 }
71
run(void)72 static void run(void)
73 {
74 if (!SAFE_FORK()) {
75 send_mouse_events();
76 exit(0);
77 }
78
79 recv_data();
80 }
81
setup(void)82 static void setup(void)
83 {
84 fd_send = open_uinput();
85 if (fd_send == -1)
86 tst_brk(TCONF, "Virtual device is not available");
87
88 setup_mouse_events(fd_send);
89 SAFE_IOCTL(fd_send, UI_SET_EVBIT, EV_KEY);
90 SAFE_IOCTL(fd_send, UI_SET_KEYBIT, BTN_RIGHT);
91
92 create_input_device(fd_send);
93
94 fd_recv = SAFE_OPEN(MOUSE_DEV, O_RDONLY);
95 }
96
cleanup(void)97 static void cleanup(void)
98 {
99 if (fd_send != -1)
100 destroy_input_device(fd_send);
101
102 if (fd_recv != -1)
103 SAFE_CLOSE(fd_recv);
104 }
105
106 static struct tst_test test = {
107 .test_all = run,
108 .setup = setup,
109 .cleanup = cleanup,
110 .forks_child = 1,
111 .needs_root = 1,
112 .needs_checkpoints = 1,
113 };
114