Class stat

storage/mroonga/lib/mrn_database_manager.cpp:104–104

    if (id == GRN_ID_NIL) {
      grn_obj *grn_db;
      struct stat db_stat;
      if (stat(mapper.db_path(), &db_stat)) {
        GRN_LOG(ctx_, GRN_LOG_INFO,
                "database not found. creating...: <%s>", mapper.db_path());