New file naming. Database OID is used as "tablespace" id and

relation OID is used as file node on creation but may be changed later
if required. Regression Tests Approved (c) -:)))

src/backend/utils/init/postinit.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.67 2000/10/02 19:42:54 petere Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/init/postinit.c,v 1.68 2000/10/16 14:52:15 vadim Exp $
  *
  *
  *-------------------------------------------------------------------------
@@ -21,6 +21,10 @@
 #include <math.h>
 #include <unistd.h>
 
+#ifndef OLD_FILE_NAMING
+#include "catalog/catalog.h"
+#endif
+
 #include "access/heapam.h"
 #include "catalog/catname.h"
 #include "catalog/pg_database.h"
@@ -242,7 +246,12 @@ InitPostgres(const char *dbname, const char *username)
 	 */
 	if (bootstrap)
 	{
+		MyDatabaseId = TemplateDbOid;
+#ifdef OLD_FILE_NAMING
 		SetDatabasePath(ExpandDatabasePath(dbname));
+#else
+		SetDatabasePath(GetDatabasePath(MyDatabaseId));
+#endif
 		LockDisable(true);
 	}
 	else
@@ -276,9 +285,13 @@ InitPostgres(const char *dbname, const char *username)
 				 "Database \"%s\" does not exist in the system catalog.",
 				 dbname);
 
+#ifdef OLD_FILE_NAMING
 		fullpath = ExpandDatabasePath(datpath);
 		if (!fullpath)
 			elog(FATAL, "Database path could not be resolved.");
+#else
+		fullpath = GetDatabasePath(MyDatabaseId);
+#endif
 
 		/* Verify the database path */