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/*
* input event name discovery
* Copyright (C) 2017 Andi Shyti <andi.shyti@samsung.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <dirent.h>
#include <fcntl.h>
#include <linux/input.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#define EP_INPUT_PATH "/dev/input/"
#define EP_INPUT_NAME_SIZE 256
static int ep_select(const struct dirent *ep)
{
if(ep->d_type != DT_CHR)
return 0;
if(!strstr(ep->d_name, "event"))
return 0;
return 1;
}
int main(int argc, char *argv[])
{
struct dirent **eps;
int i;
int n;
int ret = 0;
n = scandir(EP_INPUT_PATH, &eps, ep_select, alphasort);
if (!n) {
perror ("couldn't open the directory");
return -1;
}
for (i = 0; i < n; i++) {
char path[64];
int fd;
char dev_name[EP_INPUT_NAME_SIZE];
sprintf(path, EP_INPUT_PATH "%s", eps[i]->d_name);
fd = open(path, O_RDONLY);
if (fd < 0) {
perror("cannot open file");
return -1;
}
ret = ioctl(fd, EVIOCGNAME(EP_INPUT_NAME_SIZE), dev_name);
if (ret < 0) {
perror("unable to get the name");
} else {
printf("%s is %s\n", eps[i]->d_name, dev_name);
}
close(fd);
}
return 0;
}
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