From cb186abc17ad9e525609dc32385b0a7992e949a9 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Fri, 9 Feb 2018 19:24:15 +1000
Subject: [PATCH libinput] evdev: fail before open_restricted if the devnode
 doesn't exist

https://bugzilla.redhat.com/show_bug.cgi?id=1536633
https://bugzilla.redhat.com/show_bug.cgi?id=1539046
https://bugzilla.redhat.com/show_bug.cgi?id=1539783
https://bugzilla.redhat.com/show_bug.cgi?id=1540662
https://bugs.freedesktop.org/show_bug.cgi?id=104278

Debugged-by: Jeff Smith <whydoubt@gmail.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
---
 src/evdev.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/evdev.c b/src/evdev.c
index d1ca243d..63b93ec3 100644
--- a/src/evdev.c
+++ b/src/evdev.c
@@ -1917,6 +1917,11 @@ evdev_device_create(struct libinput_seat *seat,
 	const char *devnode = udev_device_get_devnode(udev_device);
 	const char *sysname = udev_device_get_sysname(udev_device);
 
+	if (!devnode) {
+		log_info(libinput, "%s: no device node associated\n", sysname);
+		return NULL;
+	}
+
 	if (udev_device_should_be_ignored(udev_device)) {
 		log_debug(libinput, "%s: device is ignored\n", sysname);
 		return NULL;
@@ -2434,6 +2439,9 @@ evdev_device_resume(struct evdev_device *device)
 		return -ENODEV;
 
 	devnode = udev_device_get_devnode(device->udev_device);
+	if (!devnode)
+		return -ENODEV;
+
 	fd = open_restricted(libinput, devnode,
 			     O_RDWR | O_NONBLOCK | O_CLOEXEC);
 
-- 
2.14.3