Checking to decide whether relations are system relations now depends

on the namespace not the name; pg_ is not a reserved prefix for table
names anymore.  From Fernando Nasser.

src/backend/commands/analyze.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/analyze.c,v 1.30 2002/04/02 01:03:05 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/analyze.c,v 1.31 2002/04/12 20:38:20 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -18,9 +18,9 @@
 
 #include "access/heapam.h"
 #include "access/tuptoaster.h"
+#include "catalog/catalog.h"
 #include "catalog/catname.h"
 #include "catalog/indexing.h"
-#include "catalog/pg_namespace.h"
 #include "catalog/pg_operator.h"
 #include "catalog/pg_statistic.h"
 #include "catalog/pg_type.h"
@@ -218,7 +218,7 @@ analyze_rel(Oid relid, VacuumStmt *vacstmt)
 	/*
 	 * We can ANALYZE any table except pg_statistic. See update_attstats
 	 */
-	if (RelationGetNamespace(onerel) == PG_CATALOG_NAMESPACE &&
+	if (IsSystemNamespace(RelationGetNamespace(onerel)) &&
 		strcmp(RelationGetRelationName(onerel), StatisticRelationName) == 0)
 	{
 		relation_close(onerel, AccessShareLock);

src/backend/commands/command.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/Attic/command.c,v 1.173 2002/04/11 23:20:04 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/Attic/command.c,v 1.174 2002/04/12 20:38:20 tgl Exp $
  *
  * NOTES
  *	  The PerformAddAttribute() code, like most of the relation
@@ -346,7 +346,7 @@ AlterTableAddColumn(Oid myrelid,
 	 * normally, only the owner of a class can change its schema.
 	 */
 	if (!allowSystemTableMods
-		&& IsSystemRelationName(RelationGetRelationName(rel)))
+		&& IsSystemRelation(rel))
 		elog(ERROR, "ALTER TABLE: relation \"%s\" is a system catalog",
 			 RelationGetRelationName(rel));
 	if (!pg_class_ownercheck(myrelid, GetUserId()))
@@ -548,7 +548,7 @@ AlterTableAlterColumnDropNotNull(Oid myrelid,
 			 RelationGetRelationName(rel));
 
 	if (!allowSystemTableMods
-		&& IsSystemRelationName(RelationGetRelationName(rel)))
+		&& IsSystemRelation(rel))
 		elog(ERROR, "ALTER TABLE: relation \"%s\" is a system catalog",
 			 RelationGetRelationName(rel));
 
@@ -699,7 +699,7 @@ AlterTableAlterColumnSetNotNull(Oid myrelid,
 			 RelationGetRelationName(rel));
 
 	if (!allowSystemTableMods
-		&& IsSystemRelationName(RelationGetRelationName(rel)))
+		&& IsSystemRelation(rel))
 		elog(ERROR, "ALTER TABLE: relation \"%s\" is a system catalog",
 			 RelationGetRelationName(rel));
 
@@ -829,7 +829,7 @@ AlterTableAlterColumnDefault(Oid myrelid,
 			 RelationGetRelationName(rel));
 
 	if (!allowSystemTableMods
-		&& IsSystemRelationName(RelationGetRelationName(rel)))
+		&& IsSystemRelation(rel))
 		elog(ERROR, "ALTER TABLE: relation \"%s\" is a system catalog",
 			 RelationGetRelationName(rel));
 
@@ -970,8 +970,8 @@ drop_default(Oid relid, int16 attnum)
  */
 void
 AlterTableAlterColumnFlags(Oid myrelid,
-								bool inh, const char *colName,
-								Node *flagValue, const char *flagType)
+						   bool inh, const char *colName,
+						   Node *flagValue, const char *flagType)
 {
 	Relation	rel;
 	int			newtarget = 1;
@@ -989,9 +989,7 @@ AlterTableAlterColumnFlags(Oid myrelid,
 	/*
 	 * we allow statistics case for system tables
 	 */
-	if (*flagType != 'S' &&
-		!allowSystemTableMods
-		&& IsSystemRelationName(RelationGetRelationName(rel)))
+	if (*flagType != 'S' && !allowSystemTableMods && IsSystemRelation(rel))
 		elog(ERROR, "ALTER TABLE: relation \"%s\" is a system catalog",
 			 RelationGetRelationName(rel));
 
@@ -1150,7 +1148,7 @@ AlterTableAddConstraint(Oid myrelid,
 			 RelationGetRelationName(rel));
 
 	if (!allowSystemTableMods
-		&& IsSystemRelationName(RelationGetRelationName(rel)))
+		&& IsSystemRelation(rel))
 		elog(ERROR, "ALTER TABLE: relation \"%s\" is a system catalog",
 			 RelationGetRelationName(rel));
 
@@ -1476,7 +1474,7 @@ AlterTableDropConstraint(Oid myrelid,
 			 RelationGetRelationName(rel));
 
 	if (!allowSystemTableMods
-		&& IsSystemRelationName(RelationGetRelationName(rel)))
+		&& IsSystemRelation(rel))
 		elog(ERROR, "ALTER TABLE: relation \"%s\" is a system catalog",
 			 RelationGetRelationName(rel));
 
@@ -1952,6 +1950,10 @@ CreateSchemaCommand(CreateSchemaStmt *stmt)
 				 owner_name, authId);
 	}
 
+	if (!allowSystemTableMods && IsReservedName(schemaName))
+		elog(ERROR, "CREATE SCHEMA: Illegal schema name: \"%s\" -- pg_ is reserved for system schemas",
+			 schemaName);
+
 	/* Create the schema's namespace */
 	NamespaceCreate(schemaName, owner_userid);
 

src/backend/commands/creatinh.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/Attic/creatinh.c,v 1.95 2002/03/31 06:26:30 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/Attic/creatinh.c,v 1.96 2002/04/12 20:38:22 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -22,7 +22,6 @@
 #include "catalog/indexing.h"
 #include "catalog/namespace.h"
 #include "catalog/pg_inherits.h"
-#include "catalog/pg_namespace.h"
 #include "catalog/pg_type.h"
 #include "commands/creatinh.h"
 #include "miscadmin.h"
@@ -275,7 +274,7 @@ TruncateRelation(const RangeVar *relation)
 		elog(ERROR, "TRUNCATE cannot be used on views. '%s' is a view",
 			 RelationGetRelationName(rel));
 
-	if (!allowSystemTableMods && IsSystemRelationName(RelationGetRelationName(rel)))
+	if (!allowSystemTableMods && IsSystemRelation(rel))
 		elog(ERROR, "TRUNCATE cannot be used on system tables. '%s' is a system table",
 			 RelationGetRelationName(rel));
 

src/backend/commands/indexcmds.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/indexcmds.c,v 1.69 2002/04/11 19:59:58 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/indexcmds.c,v 1.70 2002/04/12 20:38:22 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -104,13 +104,13 @@ DefineIndex(RangeVar *heapRelation,
 
 	relationId = RelationGetRelid(rel);
 
-	heap_close(rel, NoLock);
-
 	if (!IsBootstrapProcessingMode() &&
-		IsSystemRelationName(heapRelation->relname) &&
+		IsSystemRelation(rel) &&
 		!IndexesAreActive(relationId, false))
 		elog(ERROR, "Existing indexes are inactive. REINDEX first");
 
+	heap_close(rel, NoLock);
+
 	/*
 	 * look up the access method, verify it can handle the requested
 	 * features
@@ -560,6 +560,16 @@ ReindexIndex(RangeVar *indexRelation, bool force /* currently unused */ )
 			 indexRelation->relname,
 			 ((Form_pg_class) GETSTRUCT(tuple))->relkind);
 
+	if (IsSystemClass((Form_pg_class) GETSTRUCT(tuple)))
+	{
+		if (!allowSystemTableMods)
+			elog(ERROR, "\"%s\" is a system index. call REINDEX under standalone postgres with -O -P options",
+				 indexRelation->relname);
+		if (!IsIgnoringSystemIndexes())
+			elog(ERROR, "\"%s\" is a system index. call REINDEX under standalone postgres with -P -O options",
+				 indexRelation->relname);
+	}
+
 	ReleaseSysCache(tuple);
 
 	if (IsIgnoringSystemIndexes())
@@ -611,10 +621,6 @@ ReindexTable(RangeVar *relation, bool force)
 /*
  * ReindexDatabase
  *		Recreate indexes of a database.
- *
- * Exceptions:
- *		"ERROR" if table nonexistent.
- *		...
  */
 void
 ReindexDatabase(const char *dbname, bool force, bool all)
@@ -638,6 +644,11 @@ ReindexDatabase(const char *dbname, bool force, bool all)
 	if (!(superuser() || is_dbadmin(MyDatabaseId)))
 		elog(ERROR, "REINDEX DATABASE: Permission denied.");
 
+	if (!allowSystemTableMods)
+		elog(ERROR, "must be called under standalone postgres with -O -P options");
+	if (!IsIgnoringSystemIndexes())
+		elog(ERROR, "must be called under standalone postgres with -P -O options");
+
 	/*
 	 * We cannot run inside a user transaction block; if we were inside a
 	 * transaction, then our commit- and start-transaction-command calls
@@ -668,7 +679,7 @@ ReindexDatabase(const char *dbname, bool force, bool all)
 	{
 		if (!all)
 		{
-			if (!IsSystemRelationName(NameStr(((Form_pg_class) GETSTRUCT(tuple))->relname)))
+			if (!IsSystemClass((Form_pg_class) GETSTRUCT(tuple)))
 				continue;
 		}
 		if (((Form_pg_class) GETSTRUCT(tuple))->relkind == RELKIND_RELATION)

src/backend/commands/rename.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/Attic/rename.c,v 1.69 2002/04/05 11:58:24 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/Attic/rename.c,v 1.70 2002/04/12 20:38:24 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -92,7 +92,7 @@ renameatt(Oid relid,
 	 * normally, only the owner of a class can change its schema.
 	 */
 	if (!allowSystemTableMods 
-		&& IsSystemRelationName(RelationGetRelationName(targetrelation)))
+		&& IsSystemRelation(targetrelation))
 		elog(ERROR, "renameatt: class \"%s\" is a system catalog",
 			 RelationGetRelationName(targetrelation));
 	if (!pg_class_ownercheck(relid, GetUserId()))
@@ -276,14 +276,10 @@ renamerel(Oid relid, const char *newrelname)
 
 	/* Validity checks */
 	if (!allowSystemTableMods &&
-		IsSystemRelationName(RelationGetRelationName(targetrelation)))
+		IsSystemRelation(targetrelation))
 		elog(ERROR, "renamerel: system relation \"%s\" may not be renamed",
 			 RelationGetRelationName(targetrelation));
 
-	if (!allowSystemTableMods && IsSystemRelationName(newrelname))
-		elog(ERROR, "renamerel: Illegal class name: \"%s\" -- pg_ is reserved for system catalogs",
-			 newrelname);
-
 	relkind = targetrelation->rd_rel->relkind;
 	relhastriggers = (targetrelation->rd_rel->reltriggers > 0);
 

src/backend/commands/trigger.c

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/trigger.c,v 1.112 2002/04/09 20:35:48 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/trigger.c,v 1.113 2002/04/12 20:38:24 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -80,7 +80,7 @@ CreateTrigger(CreateTrigStmt *stmt)
 		elog(ERROR, "CreateTrigger: relation \"%s\" is not a table",
 			 stmt->relation->relname);
 
-	if (!allowSystemTableMods && IsSystemRelationName(stmt->relation->relname))
+	if (!allowSystemTableMods && IsSystemRelation(rel))
 		elog(ERROR, "CreateTrigger: can't create trigger for system relation %s",
 			stmt->relation->relname);
 
@@ -326,7 +326,7 @@ DropTrigger(Oid relid, const char *trigname)
 		elog(ERROR, "DropTrigger: relation \"%s\" is not a table",
 			 RelationGetRelationName(rel));
 
-	if (!allowSystemTableMods && IsSystemRelationName(RelationGetRelationName(rel)))
+	if (!allowSystemTableMods && IsSystemRelation(rel))
 		elog(ERROR, "DropTrigger: can't drop trigger for system relation %s",
 			 RelationGetRelationName(rel));
 

src/backend/commands/vacuum.c

@@ -13,7 +13,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.222 2002/04/02 05:11:55 tgl Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/commands/vacuum.c,v 1.223 2002/04/12 20:38:25 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -806,7 +806,7 @@ full_vacuum_rel(Relation onerel, VacuumStmt *vacstmt)
 	bool		reindex = false;
 
 	if (IsIgnoringSystemIndexes() &&
-		IsSystemRelationName(RelationGetRelationName(onerel)))
+		IsSystemRelation(onerel))
 		reindex = true;
 
 	vacuum_set_xid_limits(vacstmt, onerel->rd_rel->relisshared,