Function connectMaintenanceDatabase

src/fe_utils/connect_utils.c:138–157

* Try to connect to the appropriate maintenance database. * * This differs from connectDatabase only in that it has a rule for * inserting a default "dbname" if none was given (which is why cparams * is not const). Note that cparams->dbname should typically come from * a --maintenance-db command line parameter. */

 * a --maintenance-db command line parameter.
 */
PGconn *
connectMaintenanceDatabase(ConnParams *cparams,
						   const char *progname, bool echo)
{
	PGconn	   *conn;

	/* If a maintenance database name was specified, just connect to it. */
	if (cparams->dbname)
		return connectDatabase(cparams, progname, echo, false, false);

	/* Otherwise, try postgres first and then template1. */
	cparams->dbname = "postgres";
	conn = connectDatabase(cparams, progname, echo, true, false);
	if (!conn)
	{
		cparams->dbname = "template1";
		conn = connectDatabase(cparams, progname, echo, false, false);
	}
	return conn;
}

/*
 * Disconnect the given connection, canceling any statement if one is active.