#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <linux/input.h>
#include <linux/uinput.h>
#define die(str, args...) do { \
perror(str); \
exit(EXIT_FAILURE); \
} while(0)
int
main(void)
{
int fd;
struct uinput_user_dev uidev;
struct input_event ev;
int dx, dy;
int i;
fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
if(fd < 0)
die("error: open");
if(ioctl(fd, UI_SET_EVBIT, EV_KEY) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_KEYBIT, KEY_0) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_KEYBIT, BTN_A) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_EVBIT, EV_SYN) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_EVBIT, EV_REL) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_RELBIT, REL_X) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_RELBIT, REL_Y) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_EVBIT, EV_ABS) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_RELBIT, ABS_X) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_RELBIT, ABS_Y) < 0)
die("error: ioctl");
memset(&uidev, 0, sizeof(uidev));
snprintf(uidev.name, UINPUT_MAX_NAME_SIZE, "uinput-sample");
uidev.id.bustype = BUS_USB;
uidev.id.vendor = 0x1;
uidev.id.product = 0x1;
uidev.id.version = 1;
if(write(fd, &uidev, sizeof(uidev)) < 0)
die("error: write");
if(ioctl(fd, UI_DEV_CREATE) < 0)
die("error: ioctl");
sleep(2);
srand(time(NULL));
while(1) {
memset(&ev, 0, sizeof(struct input_event));
ev.type = EV_KEY;
ev.code = KEY_0;
ev.value = 1;
if(write(fd, &ev, sizeof(struct input_event)) < 0)
die("error: write");
memset(&ev, 0, sizeof(struct input_event));
ev.type = EV_KEY;
ev.code = KEY_0;
ev.value = 0;
if(write(fd, &ev, sizeof(struct input_event)) < 0)
die("error: write");
memset(&ev, 0, sizeof(struct input_event));
ev.type = EV_KEY;
ev.code = BTN_A;
ev.value = 1;
if(write(fd, &ev, sizeof(struct input_event)) < 0)
die("error: write");
memset(&ev, 0, sizeof(struct input_event));
ev.type = EV_SYN;
ev.code = 0;
ev.value = 0;
if(write(fd, &ev, sizeof(struct input_event)) < 0)
die("error: write");
sleep(1);
}
sleep(2);
if(ioctl(fd, UI_DEV_DESTROY) < 0)
die("error: ioctl");
close(fd);
return 0;
}