git.scottworley.com Git - keystroke-timestamps/blob - keystroke-timestamps.c

   1 #include <fcntl.h>
   2 #include <stdio.h>
   3 #include <unistd.h>
   4 #include <linux/input.h>
   5 #include <err.h>
   6 #include <sysexits.h>
   7
   8 int main ()
   9 {
  10   struct input_event i;
  11   int fd = open("/dev/input/by-path/platform-i8042-serio-0-event-kbd", O_RDONLY);
  12   if (fd < 0) {
  13     err(EX_NOINPUT, "Could not open keyboard event file");
  14   }
  15   while (read(fd, &i, sizeof(i)) == sizeof(i)) {
  16     if (i.type == 1 && i.value == 1) {
  17       printf("%ld.%ld\n", i.time.tv_sec, i.time.tv_usec);
  18       fflush(stdout);
  19     }
  20   }
  21   return 0;
  22 }