3 * Copyright (C) 2016-2020 William Morrow
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published
7 * by the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public
16 * License along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
27 #include <linux/input.h>
31 int main(int ac, char **av)
34 if( ac < 2 ) { printf("usage: %s /dev/input/by-id/<device?>\n", av[0]); exit(1); }
35 int fd = open(av[1], O_RDONLY);
36 if( !fd ) { perror(av[1]); exit(1); }
39 int ret = read(fd, &ev, sizeof(ev));
40 if( ret != sizeof(ev) ) {
41 if( ret < 0 ) perror("read event");
42 printf("bad read: %d\n", ret);
45 printf("event: (%d, %d, 0x%x)\n", ev.type, ev.code, ev.value);