backend: add syspath and devnode to input devices

src/backends/metal.rs

@@ -281,7 +281,7 @@ pub async fn create(state: &Rc<State>) -> Result<Rc<MetalBackend>, MetalError> {
 struct MetalInputDevice {
     slot: usize,
     id: InputDeviceId,
-    _devnum: c::dev_t,
+    devnum: c::dev_t,
     fd: CloneCell<Option<Rc<OwnedFd>>>,
     inputdev: CloneCell<Option<Rc<RegisteredDevice>>>,
     devnode: CString,
@@ -509,6 +509,10 @@ impl InputDevice for MetalInputDevice {
         self.name.get()
     }
 
+    fn dev_t(&self) -> Option<c::dev_t> {
+        Some(self.devnum)
+    }
+
     fn set_tap_enabled(&self, enabled: bool) {
         self.desired.tap_enabled.set(Some(enabled));
         if let Some(dev) = self.inputdev.get() {

src/backends/metal/monitor.rs

@@ -278,7 +278,7 @@ impl MetalBackend {
         let dev = Rc::new(MetalInputDevice {
             slot,
             id: device_id,
-            _devnum: devnum,
+            devnum,
             fd: Default::default(),
             inputdev: Default::default(),
             devnode: devnode.to_owned(),

src/backends/x.rs

@@ -1177,6 +1177,10 @@ impl InputDevice for XSeatKeyboard {
         self.0.kb_name.clone()
     }
 
+    fn dev_t(&self) -> Option<dev_t> {
+        None
+    }
+
     fn set_tap_enabled(&self, enabled: bool) {
         let _ = enabled;
     }
@@ -1242,6 +1246,10 @@ impl InputDevice for XSeatMouse {
         self.0.mouse_name.clone()
     }
 
+    fn dev_t(&self) -> Option<dev_t> {
+        None
+    }
+
     fn set_tap_enabled(&self, enabled: bool) {
         let _ = enabled;
     }