Function du_path_with_seen 

pub fn du_path_with_seen(
    path: &Path,
    config: &DuConfig,
    seen_inodes: &mut HashSet<(u64, u64)>,
    had_error: &mut bool,
) -> Result<Vec<DuEntry>>

Traverse path with a shared inode set (for deduplication across multiple arguments). Sets had_error to true if any permission or access errors are encountered.