device: If we can't open the device, it's not the one we want

well, or at least we're not sure whether it is, so...

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/device.cpp b/src/device.cpp
index 5868036..50d0c28 100644
--- a/src/device.cpp
+++ b/src/device.cpp
@@ -69,6 +69,9 @@ static bool event_is_device(const std::string &path,
     bool equal = false;
     int fd = open(path.c_str(), O_RDONLY);
 
+    if (fd == -1)
+      return false;
+
     if (ioctl(fd, EVIOCGNAME(sizeof(device_name)), device_name) != -1 &&
         devname.compare(device_name) == 0) {
       struct stat buf;