From: Scott Worley <scottworley@scottworley.com>
Date: Thu, 26 Dec 2013 07:54:06 +0000 (-0800)
Subject: Specify keyboard device as an option
X-Git-Tag: v1.0.0~13
X-Git-Url: http://git.scottworley.com/keystroke-timestamps/commitdiff_plain/c02cb43bbdd8ae57b11cb1d6306ed8473af0a134?hp=--cc

Specify keyboard device as an option
---

c02cb43bbdd8ae57b11cb1d6306ed8473af0a134
diff --git a/keystroke-timestamps.c b/keystroke-timestamps.c
index 2ab4c42..fd7de5d 100644
--- a/keystroke-timestamps.c
+++ b/keystroke-timestamps.c
@@ -11,20 +11,28 @@
 int main (int argc, char **argv)
 {
   int print_usec = 0;
+  char* device = strdup("/dev/input/by-path/platform-i8042-serio-0-event-kbd");
   struct option long_options[] = {
+    {"device", required_argument, 0,            'd' },
     {"usec",   no_argument,       &print_usec,  1   },
     {0,        0,                 0,            0   },
   };
   while (1) {
     int c = getopt_long(argc, argv, "", long_options, NULL);
     if (c == -1) break;
+    if (c == 'd') {
+      free(device);
+      device = strdup(optarg);
+      continue;
+    }
     if (c != 0) exit(EX_USAGE);
   }
 
-  int fd = open("/dev/input/by-path/platform-i8042-serio-0-event-kbd", O_RDONLY);
+  int fd = open(device, O_RDONLY);
   if (fd < 0) {
     err(EX_NOINPUT, "Could not open keyboard event file");
   }
+  free(device);
   struct input_event i;
   while (read(fd, &i, sizeof(i)) == sizeof(i)) {
     if (i.type == 1 && i.value == 1) {