fix(vfs): Z-04 — implement webdav quota report

src/carrier.rs

@@ -885,6 +885,22 @@ impl DavFileSystem for CarrierFs {
             Ok(())
         })
     }
+
+    fn get_quota(&self) -> FsFuture<'_, (u64, Option<u64>)> {
+        Box::pin(async move {
+            self.touch();
+            let inner = self.inner.lock().unwrap_or_else(|e| e.into_inner());
+            let total_capacity = inner.manifest.total_blocks as u64 * crate::crypto::CHUNK_SIZE as u64;
+            let used_bytes = inner
+                .manifest
+                .inodes
+                .values()
+                .filter(|i| !i.is_dir)
+                .map(|i| i.size)
+                .sum::<u64>();
+            Ok((used_bytes, Some(total_capacity)))
+        })
+    }
 }
 
 /// Datei-Handle für Dateien innerhalb des Carrier-Dateisystems mit Streaming und Chunk-Pufferung.