udev: print errno if we can't open a device

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

diff --git a/src/udev-seat.c b/src/udev-seat.c
index 29d4fa0..b355554 100644 (file)
--- a/src/udev-seat.c
+++ b/src/udev-seat.c
@@ -76,7 +76,7 @@ device_added(struct udev_device *udev_device, struct udev_input *input)
         * read.  mtdev_get() also expects this. */
        fd = open_restricted(libinput, devnode, O_RDWR | O_NONBLOCK);
        if (fd < 0) {
-               log_info("opening input device '%s' failed.\n", devnode);
+               log_info("opening input device '%s' failed (%s).\n", devnode, strerror(-fd));
                return 0;
        }