virtual_fs::overlay_fs

Function open_copy_on_write

Source 
fn open_copy_on_write<P>(
    path: &Path,
    conf: &OpenOptionsConfig,
    primary: &Arc<P>,
    file: Box<dyn VirtualFile + Send + Sync>,
) -> Result<Box<dyn VirtualFile + Send + Sync>, FsError>
where
    P: FileSystem,