code: HdfsFileStatus getHdfsFileInfo(String src) throws IOException {
      if (isPermissionEnabled) {
        INode[] inodes = dir.getExistingPathINodes(src);
        if (isPermissionCheckingEnabled(inodes)) {
          checkTraverse(src, inodes);
        }
      }
      return dir.getHdfsFileInfo(src);
    }
docs: Get the file info for a specific file.
  
  @param src The string representation of the path to the file
  @return object containing information regarding the file
  or null if file not found
  @throws IOException if permission to access file is denied by the system