[Issue #260] fix integer overflow

Author: gsmolk

src/backup.c

@@ -1269,7 +1269,7 @@ get_database_map(PGconn *conn)
 		db_map_entry *db_entry = (db_map_entry *) pgut_malloc(sizeof(db_map_entry));
 
 		/* get Oid */
-		db_entry->dbOid = atoi(PQgetvalue(res, i, 0));
+		db_entry->dbOid = atoll(PQgetvalue(res, i, 0));
 
 		/* get datname */
 		datname = PQgetvalue(res, i, 1);
@@ -2644,7 +2644,7 @@ IdentifySystem(StreamThreadArg *stream_thread_arg)
 	}
 
 	stream_conn_sysidentifier_str = PQgetvalue(res, 0, 0);
-	stream_conn_tli = atoi(PQgetvalue(res, 0, 1));
+	stream_conn_tli = atoll(PQgetvalue(res, 0, 1));
 
 	/* Additional sanity, primary for PG 9.5,
 	 * where system id can be obtained only via "IDENTIFY SYSTEM"

src/checkdb.c

@@ -439,7 +439,7 @@ get_index_list(const char *dbname, bool first_db_with_amcheck,
 		char *namespace = NULL;
 
 		/* index oid */
-		ind->indexrelid = atoi(PQgetvalue(res, i, 0));
+		ind->indexrelid = atoll(PQgetvalue(res, i, 0));
 
 		/* index relname */
 		name = PQgetvalue(res, i, 1);

src/ptrack.c

@@ -284,8 +284,8 @@ pg_ptrack_clear(PGconn *backup_conn, int ptrack_version_num)
 		if (strcmp(dbname, "template0") == 0)
 			continue;
 
-		dbOid = atoi(PQgetvalue(res_db, i, 1));
-		tblspcOid = atoi(PQgetvalue(res_db, i, 2));
+		dbOid = atoll(PQgetvalue(res_db, i, 1));
+		tblspcOid = atoll(PQgetvalue(res_db, i, 2));
 
 		tmp_conn = pgut_connect(instance_config.conn_opt.pghost, instance_config.conn_opt.pgport,
 								dbname,