Function svn_fs_list_transactions 

pub unsafe extern "C" fn svn_fs_list_transactions(
    names_p: *mut *mut apr_array_header_t,
    fs: *mut svn_fs_t,
    pool: *mut apr_pool_t,
) -> *mut svn_error_t

Set @a *names_p to an array of const char * ids which are the names of all the currently active transactions in the filesystem @a fs. Allocate the array in @a pool.