Function svn_repos_find_root_path 

pub unsafe extern "C" fn svn_repos_find_root_path(
    path: *const c_char,
    pool: *mut apr_pool_t,
) -> *const c_char

Find the root path of the repository that contains @a path.

If a repository was found, the path to the root of the repository is returned, else @c NULL. The pointer to the returned path may be equal to @a path.