Code beautification for object-access hook machinery.

KaiGai Kohei

src/backend/catalog/Makefile

@@ -11,7 +11,8 @@ top_builddir = ../../..
 include $(top_builddir)/src/Makefile.global
 
 OBJS = catalog.o dependency.o heap.o index.o indexing.o namespace.o aclchk.o \
-       objectaddress.o pg_aggregate.o pg_collation.o pg_constraint.o pg_conversion.o \
+       objectaccess.o objectaddress.o pg_aggregate.o pg_collation.o \
+       pg_constraint.o pg_conversion.o \
        pg_depend.o pg_enum.o pg_inherits.o pg_largeobject.o pg_namespace.o \
        pg_operator.o pg_proc.o pg_range.o pg_db_role_setting.o pg_shdepend.o \
        pg_type.o storage.o toasting.o

src/backend/catalog/dependency.c

@@ -997,14 +997,8 @@ deleteOneObject(const ObjectAddress *object, Relation *depRel, int flags)
 	HeapTuple	tup;
 
 	/* DROP hook of the objects being removed */
-	if (object_access_hook)
-	{
-		ObjectAccessDrop drop_arg;
-
-		drop_arg.dropflags = flags;
-		InvokeObjectAccessHook(OAT_DROP, object->classId, object->objectId,
-							   object->objectSubId, &drop_arg);
-	}
+	InvokeObjectDropHookArg(object->classId, object->objectId,
+							object->objectSubId, flags);
 
 	/*
 	 * Close depRel if we are doing a drop concurrently.  The object deletion

src/backend/catalog/heap.c

@@ -1293,15 +1293,7 @@ heap_create_with_catalog(const char *relname,
 	}
 
 	/* Post creation hook for new relation */
-	if (object_access_hook)
-	{
-		ObjectAccessPostCreate	post_create_args;
-
-		memset(&post_create_args, 0, sizeof(ObjectAccessPostCreate));
-		post_create_args.is_internal = is_internal;
-		(*object_access_hook)(OAT_POST_CREATE, RelationRelationId,
-							  relid, 0, &post_create_args);
-    }
+	InvokeObjectPostCreateHookArg(RelationRelationId, relid, 0, is_internal);
 
 	/*
 	 * Store any supplied constraints and defaults.

src/backend/catalog/index.c

@@ -1028,15 +1028,8 @@ index_create(Relation heapRelation,
 	}
 
 	/* Post creation hook for new index */
-	if (object_access_hook)
-	{
-		ObjectAccessPostCreate	post_create_args;
-
-		memset(&post_create_args, 0, sizeof(ObjectAccessPostCreate));
-		post_create_args.is_internal = is_internal;
-		(*object_access_hook)(OAT_POST_CREATE, RelationRelationId,
-							  indexRelationId, 0, &post_create_args);
-	}
+	InvokeObjectPostCreateHookArg(RelationRelationId,
+								  indexRelationId, 0, is_internal);
 
 	/*
 	 * Advance the command counter so that we can see the newly-entered

src/backend/catalog/objectaccess.c

@@ -0,0 +1,63 @@
+/* -------------------------------------------------------------------------
+ *
+ * objectaccess.c
+ *		functions for object_access_hook on various events
+ *
+ * Portions Copyright (c) 1996-2012, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * -------------------------------------------------------------------------
+ */
+#include "postgres.h"
+
+#include "catalog/objectaccess.h"
+
+/*
+ * Hook on object accesses.  This is intended as infrastructure for security
+ * and logging plugins.
+ */
+object_access_hook_type object_access_hook = NULL;
+
+/*
+ * RunObjectPostCreateHook
+ *
+ * It is entrypoint of OAT_POST_CREATE event
+ */
+void
+RunObjectPostCreateHook(Oid classId, Oid objectId, int subId,
+						bool is_internal)
+{
+	ObjectAccessPostCreate	pc_arg;
+
+	/* caller should check, but just in case... */
+	Assert(object_access_hook != NULL);
+
+	memset(&pc_arg, 0, sizeof(ObjectAccessPostCreate));
+	pc_arg.is_internal = is_internal;
+
+	(*object_access_hook)(OAT_POST_CREATE,
+						  classId, objectId, subId,
+						  (void *) &pc_arg);
+}
+
+/*
+ * RunObjectDropHook
+ *
+ * It is entrypoint of OAT_DROP event
+ */
+void
+RunObjectDropHook(Oid classId, Oid objectId, int subId,
+				  int dropflags)
+{
+	ObjectAccessDrop	drop_arg;
+
+	/* caller should check, but just in case... */
+	Assert(object_access_hook != NULL);
+
+	memset(&drop_arg, 0, sizeof(ObjectAccessDrop));
+	drop_arg.dropflags = dropflags;
+
+	(*object_access_hook)(OAT_DROP,
+						  classId, objectId, subId,
+						  (void *) &drop_arg);
+}

src/backend/catalog/pg_collation.c

@@ -136,8 +136,7 @@ CollationCreate(const char *collname, Oid collnamespace,
 	recordDependencyOnCurrentExtension(&myself, false);
 
 	/* Post creation hook for new collation */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   CollationRelationId, oid, 0, NULL);
+	InvokeObjectPostCreateHook(CollationRelationId, oid, 0);
 
 	heap_freetuple(tup);
 	heap_close(rel, RowExclusiveLock);

src/backend/catalog/pg_constraint.c

@@ -367,8 +367,7 @@ CreateConstraintEntry(const char *constraintName,
 	}
 
 	/* Post creation hook for new constraint */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   ConstraintRelationId, conOid, 0, NULL);
+	InvokeObjectPostCreateHook(ConstraintRelationId, conOid, 0);
 
 	return conOid;
 }

src/backend/catalog/pg_conversion.c

@@ -136,8 +136,7 @@ ConversionCreate(const char *conname, Oid connamespace,
 	recordDependencyOnCurrentExtension(&myself, false);
 
 	/* Post creation hook for new conversion */
-	InvokeObjectAccessHook(OAT_POST_CREATE, ConversionRelationId,
-						   HeapTupleGetOid(tup), 0, NULL);
+	InvokeObjectPostCreateHook(ConversionRelationId, HeapTupleGetOid(tup), 0);
 
 	heap_freetuple(tup);
 	heap_close(rel, RowExclusiveLock);

src/backend/catalog/pg_namespace.c

@@ -96,8 +96,7 @@ NamespaceCreate(const char *nspName, Oid ownerId, bool isTemp)
 		recordDependencyOnCurrentExtension(&myself, false);
 
 	/* Post creation hook for new schema */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   NamespaceRelationId, nspoid, 0, NULL);
+	InvokeObjectPostCreateHook(NamespaceRelationId, nspoid, 0);
 
 	return nspoid;
 }

src/backend/catalog/pg_operator.c

@@ -275,8 +275,7 @@ OperatorShellMake(const char *operatorName,
 	heap_freetuple(tup);
 
 	/* Post creation hook for new shell operator */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   OperatorRelationId, operatorObjectId, 0, NULL);
+	InvokeObjectPostCreateHook(OperatorRelationId, operatorObjectId, 0);
 
 	/*
 	 * Make sure the tuple is visible for subsequent lookups/updates.
@@ -544,8 +543,7 @@ OperatorCreate(const char *operatorName,
 	makeOperatorDependencies(tup);
 
 	/* Post creation hook for new operator */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   OperatorRelationId, operatorObjectId, 0, NULL);
+	InvokeObjectPostCreateHook(OperatorRelationId, operatorObjectId, 0);
 
 	heap_close(pg_operator_desc, RowExclusiveLock);
 

src/backend/catalog/pg_proc.c

@@ -661,8 +661,7 @@ ProcedureCreate(const char *procedureName,
 	heap_freetuple(tup);
 
 	/* Post creation hook for new function */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   ProcedureRelationId, retval, 0, NULL);
+	InvokeObjectPostCreateHook(ProcedureRelationId, retval, 0);
 
 	heap_close(rel, RowExclusiveLock);
 

src/backend/catalog/pg_type.c

@@ -163,8 +163,7 @@ TypeShellMake(const char *typeName, Oid typeNamespace, Oid ownerId)
 								 false);
 
 	/* Post creation hook for new shell type */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   TypeRelationId, typoid, 0, NULL);
+	InvokeObjectPostCreateHook(TypeRelationId, typoid, 0);
 
 	/*
 	 * clean up and return the type-oid
@@ -476,8 +475,7 @@ TypeCreate(Oid newTypeOid,
 								 rebuildDeps);
 
 	/* Post creation hook for new type */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   TypeRelationId, typeObjectId, 0, NULL);
+	InvokeObjectPostCreateHook(TypeRelationId, typeObjectId, 0);
 
 	/*
 	 * finish up

src/backend/commands/aggregatecmds.c

@@ -29,6 +29,7 @@
 #include "catalog/pg_aggregate.h"
 #include "catalog/pg_proc.h"
 #include "catalog/pg_type.h"
+#include "commands/alter.h"
 #include "commands/defrem.h"
 #include "miscadmin.h"
 #include "parser/parse_func.h"

src/backend/commands/dbcommands.c

@@ -524,8 +524,7 @@ createdb(const CreatedbStmt *stmt)
 	copyTemplateDependencies(src_dboid, dboid);
 
 	/* Post creation hook for new database */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   DatabaseRelationId, dboid, 0, NULL);
+	InvokeObjectPostCreateHook(DatabaseRelationId, dboid, 0);
 
 	/*
 	 * Force a checkpoint before starting the copy. This will force dirty
@@ -816,14 +815,7 @@ dropdb(const char *dbname, bool missing_ok)
 					   dbname);
 
 	/* DROP hook for the database being removed */
-	if (object_access_hook)
-	{
-		ObjectAccessDrop drop_arg;
-
-		memset(&drop_arg, 0, sizeof(ObjectAccessDrop));
-		InvokeObjectAccessHook(OAT_DROP,
-							   DatabaseRelationId, db_id, 0, &drop_arg);
-	}
+	InvokeObjectDropHook(DatabaseRelationId, db_id, 0);
 
 	/*
 	 * Disallow dropping a DB that is marked istemplate.  This is just to

src/backend/commands/event_trigger.c

@@ -310,8 +310,7 @@ insert_event_trigger_tuple(char *trigname, char *eventname, Oid evtOwner,
 	recordDependencyOn(&myself, &referenced, DEPENDENCY_NORMAL);
 
 	/* Post creation hook for new operator family */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   EventTriggerRelationId, trigoid, 0, NULL);
+	InvokeObjectPostCreateHook(EventTriggerRelationId, trigoid, 0);
 
 	/* Close pg_event_trigger. */
 	heap_close(tgrel, RowExclusiveLock);

src/backend/commands/extension.c

@@ -1562,8 +1562,7 @@ InsertExtensionTuple(const char *extName, Oid extOwner,
 		recordDependencyOn(&myself, &otherext, DEPENDENCY_NORMAL);
 	}
 	/* Post creation hook for new extension */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   ExtensionRelationId, extensionOid, 0, NULL);
+	InvokeObjectPostCreateHook(ExtensionRelationId, extensionOid, 0);
 
 	return extensionOid;
 }

src/backend/commands/foreigncmds.c

@@ -599,8 +599,7 @@ CreateForeignDataWrapper(CreateFdwStmt *stmt)
 	recordDependencyOnCurrentExtension(&myself, false);
 
 	/* Post creation hook for new foreign data wrapper */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   ForeignDataWrapperRelationId, fdwId, 0, NULL);
+	InvokeObjectPostCreateHook(ForeignDataWrapperRelationId, fdwId, 0);
 
 	heap_close(rel, RowExclusiveLock);
 
@@ -900,8 +899,7 @@ CreateForeignServer(CreateForeignServerStmt *stmt)
 	recordDependencyOnCurrentExtension(&myself, false);
 
 	/* Post creation hook for new foreign server */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   ForeignServerRelationId, srvId, 0, NULL);
+	InvokeObjectPostCreateHook(ForeignServerRelationId, srvId, 0);
 
 	heap_close(rel, RowExclusiveLock);
 
@@ -1145,8 +1143,7 @@ CreateUserMapping(CreateUserMappingStmt *stmt)
 	recordDependencyOnCurrentExtension(&myself, false);
 
 	/* Post creation hook for new user mapping */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   UserMappingRelationId, umId, 0, NULL);
+	InvokeObjectPostCreateHook(UserMappingRelationId, umId, 0);
 
 	heap_close(rel, RowExclusiveLock);
 

src/backend/commands/functioncmds.c

@@ -1558,8 +1558,7 @@ CreateCast(CreateCastStmt *stmt)
 	recordDependencyOnCurrentExtension(&myself, false);
 
 	/* Post creation hook for new cast */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   CastRelationId, castid, 0, NULL);
+	InvokeObjectPostCreateHook(CastRelationId, castid, 0);
 
 	heap_freetuple(tuple);
 

src/backend/commands/opclasscmds.c

@@ -309,8 +309,7 @@ CreateOpFamily(char *amname, char *opfname, Oid namespaceoid, Oid amoid)
 	recordDependencyOnCurrentExtension(&myself, false);
 
 	/* Post creation hook for new operator family */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   OperatorFamilyRelationId, opfamilyoid, 0, NULL);
+	InvokeObjectPostCreateHook(OperatorFamilyRelationId, opfamilyoid, 0);
 
 	heap_close(rel, RowExclusiveLock);
 
@@ -710,8 +709,7 @@ DefineOpClass(CreateOpClassStmt *stmt)
 	recordDependencyOnCurrentExtension(&myself, false);
 
 	/* Post creation hook for new operator class */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   OperatorClassRelationId, opclassoid, 0, NULL);
+	InvokeObjectPostCreateHook(OperatorClassRelationId, opclassoid, 0);
 
 	heap_close(rel, RowExclusiveLock);
 

src/backend/commands/proclang.c

@@ -429,8 +429,7 @@ create_proc_lang(const char *languageName, bool replace,
 	}
 
 	/* Post creation hook for new procedural language */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   LanguageRelationId, myself.objectId, 0, NULL);
+	InvokeObjectPostCreateHook(LanguageRelationId, myself.objectId, 0);
 
 	heap_close(rel, RowExclusiveLock);
 

src/backend/commands/tablecmds.c

@@ -4514,8 +4514,7 @@ ATExecAddColumn(List **wqueue, AlteredTableInfo *tab, Relation rel,
 	heap_freetuple(reltup);
 
 	/* Post creation hook for new attribute */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   RelationRelationId, myrelid, newattnum, NULL);
+	InvokeObjectPostCreateHook(RelationRelationId, myrelid, newattnum);
 
 	heap_close(pgclass, RowExclusiveLock);
 

src/backend/commands/tablespace.c

@@ -331,8 +331,7 @@ CreateTableSpace(CreateTableSpaceStmt *stmt)
 	recordDependencyOnOwner(TableSpaceRelationId, tablespaceoid, ownerId);
 
 	/* Post creation hook for new tablespace */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   TableSpaceRelationId, tablespaceoid, 0, NULL);
+	InvokeObjectPostCreateHook(TableSpaceRelationId, tablespaceoid, 0);
 
 	create_tablespace_directories(location, tablespaceoid);
 
@@ -439,14 +438,7 @@ DropTableSpace(DropTableSpaceStmt *stmt)
 					   tablespacename);
 
 	/* DROP hook for the tablespace being removed */
-	if (object_access_hook)
-	{
-		ObjectAccessDrop drop_arg;
-
-		memset(&drop_arg, 0, sizeof(ObjectAccessDrop));
-		InvokeObjectAccessHook(OAT_DROP, TableSpaceRelationId,
-							   tablespaceoid, 0, &drop_arg);
-	}
+	InvokeObjectDropHook(TableSpaceRelationId, tablespaceoid, 0);
 
 	/*
 	 * Remove the pg_tablespace tuple (this will roll back if we fail below)

src/backend/commands/trigger.c

@@ -742,8 +742,7 @@ CreateTrigger(CreateTrigStmt *stmt, const char *queryString,
 							   DEPENDENCY_NORMAL);
 
 	/* Post creation hook for new trigger */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   TriggerRelationId, trigoid, 0, NULL);
+	InvokeObjectPostCreateHook(TriggerRelationId, trigoid, 0);
 
 	/* Keep lock on target rel until end of xact */
 	heap_close(rel, NoLock);

src/backend/commands/tsearchcmds.c

@@ -272,8 +272,7 @@ DefineTSParser(List *names, List *parameters)
 	makeParserDependencies(tup);
 
 	/* Post creation hook for new text search parser */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   TSParserRelationId, prsOid, 0, NULL);
+	InvokeObjectPostCreateHook(TSParserRelationId, prsOid, 0);
 
 	heap_freetuple(tup);
 
@@ -479,8 +478,7 @@ DefineTSDictionary(List *names, List *parameters)
 	makeDictionaryDependencies(tup);
 
 	/* Post creation hook for new text search dictionary */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   TSDictionaryRelationId, dictOid, 0, NULL);
+	InvokeObjectPostCreateHook(TSDictionaryRelationId, dictOid, 0);
 
 	heap_freetuple(tup);
 
@@ -796,8 +794,7 @@ DefineTSTemplate(List *names, List *parameters)
 	makeTSTemplateDependencies(tup);
 
 	/* Post creation hook for new text search template */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   TSTemplateRelationId, tmplOid, 0, NULL);
+	InvokeObjectPostCreateHook(TSTemplateRelationId, tmplOid, 0);
 
 	heap_freetuple(tup);
 
@@ -1092,8 +1089,7 @@ DefineTSConfiguration(List *names, List *parameters)
 	makeConfigurationDependencies(tup, false, mapRel);
 
 	/* Post creation hook for new text search configuration */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   TSConfigRelationId, cfgOid, 0, NULL);
+	InvokeObjectPostCreateHook(TSConfigRelationId, cfgOid, 0);
 
 	heap_freetuple(tup);
 

src/backend/commands/user.c

@@ -426,8 +426,7 @@ CreateRole(CreateRoleStmt *stmt)
 				GetUserId(), false);
 
 	/* Post creation hook for new role */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   AuthIdRelationId, roleid, 0, NULL);
+	InvokeObjectPostCreateHook(AuthIdRelationId, roleid, 0);
 
 	/*
 	 * Close pg_authid, but keep lock till commit.
@@ -968,14 +967,7 @@ DropRole(DropRoleStmt *stmt)
 					 errmsg("must be superuser to drop superusers")));
 
 		/* DROP hook for the role being removed */
-		if (object_access_hook)
-		{
-			ObjectAccessDrop drop_arg;
-
-			memset(&drop_arg, 0, sizeof(ObjectAccessDrop));
-			InvokeObjectAccessHook(OAT_DROP,
-								   AuthIdRelationId, roleid, 0, &drop_arg);
-		}
+		InvokeObjectDropHook(AuthIdRelationId, roleid, 0);
 
 		/*
 		 * Lock the role, so nobody can add dependencies to her while we drop

src/backend/rewrite/rewriteDefine.c

@@ -182,8 +182,7 @@ InsertRule(char *rulname,
 	}
 
 	/* Post creation hook for new rule */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   RewriteRelationId, rewriteObjectId, 0, NULL);
+	InvokeObjectPostCreateHook(RewriteRelationId, rewriteObjectId, 0);
 
 	heap_close(pg_rewrite_desc, RowExclusiveLock);
 

src/backend/storage/large_object/inv_api.c

@@ -218,8 +218,7 @@ inv_create(Oid lobjId)
 							lobjId_new, GetUserId());
 
 	/* Post creation hook for new large object */
-	InvokeObjectAccessHook(OAT_POST_CREATE,
-						   LargeObjectRelationId, lobjId_new, 0, NULL);
+	InvokeObjectPostCreateHook(LargeObjectRelationId, lobjId_new, 0);
 
 	/*
 	 * Advance command counter to make new tuple visible to later operations.

src/backend/utils/init/globals.c

@@ -18,7 +18,6 @@
  */
 #include "postgres.h"
 
-#include "catalog/objectaccess.h"
 #include "libpq/pqcomm.h"
 #include "miscadmin.h"
 #include "storage/backendid.h"
@@ -126,9 +125,3 @@ int			VacuumCostBalance = 0;		/* working state for vacuum */
 bool		VacuumCostActive = false;
 
 int			GinFuzzySearchLimit = 0;
-
-/*
- * Hook on object accesses.  This is intended as infrastructure for security
- * and logging plugins.
- */
-object_access_hook_type object_access_hook = NULL;

src/include/catalog/objectaccess.h

@@ -28,6 +28,7 @@ typedef enum ObjectAccessType
 {
 	OAT_POST_CREATE,
 	OAT_DROP,
+	OAT_POST_ALTER,
 } ObjectAccessType;
 
 /*
@@ -66,11 +67,27 @@ typedef void (*object_access_hook_type) (ObjectAccessType access,
 
 extern PGDLLIMPORT object_access_hook_type object_access_hook;
 
-#define InvokeObjectAccessHook(access,classId,objectId,subId,arg)	\
+extern void RunObjectPostCreateHook(Oid classId, Oid objectId, int subId,
+									bool is_internal);
+extern void RunObjectDropHook(Oid classId, Oid objectId, int subId,
+							  int dropflags);
+
+#define InvokeObjectPostCreateHook(classId,objectId,subId)			\
+	InvokeObjectPostCreateHookArg((classId),(objectId),(subId),false)
+#define InvokeObjectPostCreateHookArg(classId,objectId,subId,is_internal) \
 	do {															\
 		if (object_access_hook)										\
-			(*object_access_hook)((access),(classId),				\
-								  (objectId),(subId),(arg));		\
+			RunObjectPostCreateHook((classId),(objectId),(subId),	\
+									(is_internal));					\
+	} while(0)
+
+#define InvokeObjectDropHook(classId,objectId,subId)				\
+	InvokeObjectDropHookArg((classId),(objectId),(subId),0)
+#define InvokeObjectDropHookArg(classId,objectId,subId,dropflags)	\
+	do {															\
+		if (object_access_hook)										\
+			RunObjectDropHook((classId),(objectId),(subId),			\
+							  (dropflags));							\
 	} while(0)
 
 #endif   /* OBJECTACCESS_H */