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#include <errno.h>
#include <fcntl.h>
#include <linux/input.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <unistd.h>
int sendevent_main(int argc, char *argv[])
{
int fd;
ssize_t ret;
int version;
struct input_event event;
if(argc != 5) {
fprintf(stderr, "use: %s device type code value\n", argv[0]);
return 1;
}
fd = open(argv[1], O_RDWR);
if(fd < 0) {
fprintf(stderr, "could not open %s, %s\n", argv[optind], strerror(errno));
return 1;
}
if (ioctl(fd, EVIOCGVERSION, &version)) {
fprintf(stderr, "could not get driver version for %s, %s\n", argv[optind], strerror(errno));
return 1;
}
memset(&event, 0, sizeof(event));
event.type = atoi(argv[2]);
event.code = atoi(argv[3]);
event.value = atoi(argv[4]);
ret = write(fd, &event, sizeof(event));
if(ret < (ssize_t) sizeof(event)) {
fprintf(stderr, "write event failed, %s\n", strerror(errno));
return -1;
}
return 0;
}
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