fix SMB Usage

app/modules/filemanager/storages/smb.py

@@ -516,18 +516,10 @@ class SMB(StorageBase, metaclass=Singleton):
             return False
 
     def link(self, fileitem: schemas.FileItem, target_file: Path) -> bool:
-        """
+        pass
-        硬链接文件（SMB不支持，返回False）
-        """
-        logger.warn("【SMB】不支持硬链接操作")
-        return False
 
     def softlink(self, fileitem: schemas.FileItem, target_file: Path) -> bool:
-        """
+        pass
-        软链接文件（SMB不支持，返回False）
-        """
-        logger.warn("【SMB】不支持软链接操作")
-        return False
 
     def usage(self) -> Optional[schemas.StorageUsage]:
         """
@@ -535,33 +527,14 @@ class SMB(StorageBase, metaclass=Singleton):
         """
         try:
             self._check_connection()
-
+            volume_stat = smbclient.stat_volume(self._server_path)
-            # 获取磁盘使用情况
-            try:
-                stat_result = smbclient.stat(self._server_path)
-                
-                if hasattr(stat_result, 'f_frsize') and hasattr(stat_result, 'f_blocks'):
-                    block_size = stat_result.f_frsize
-                    total_blocks = stat_result.f_blocks
-                    free_blocks = stat_result.f_bavail
-
-                    total = total_blocks * block_size
-                    available = free_blocks * block_size
-
             return schemas.StorageUsage(
-                        total=total,
+                total=volume_stat.total_size,
-                        available=available
+                available=volume_stat.caller_available_size
-                    )
-            except Exception as e:
-                logger.debug(f"【SMB】获取磁盘使用情况失败: {e}")
-                # 返回默认值
-                return schemas.StorageUsage(
-                    total=0,
-                    available=0
             )
+
         except Exception as e:
             logger.error(f"【SMB】获取存储使用情况失败: {e}")
-
             return None
 
     def __del__(self):