greenplumn objectaccess 源码
greenplumn objectaccess 代码
文件路径：/src/backend/catalog/objectaccess.c
/* -------------------------------------------------------------------------
*
* objectaccess.c
* functions for object_access_hook on various events
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* -------------------------------------------------------------------------
*/
#include "postgres.h"
#include "catalog/objectaccess.h"
#include "catalog/pg_namespace.h"
#include "catalog/pg_proc.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);
}
/*
* RunObjectPostAlterHook
*
* It is entrypoint of OAT_POST_ALTER event
*/
void
RunObjectPostAlterHook(Oid classId, Oid objectId, int subId,
Oid auxiliaryId, bool is_internal)
{
ObjectAccessPostAlter pa_arg;
/* caller should check, but just in case... */
Assert(object_access_hook != NULL);
memset(&pa_arg, 0, sizeof(ObjectAccessPostAlter));
pa_arg.auxiliary_id = auxiliaryId;
pa_arg.is_internal = is_internal;
(*object_access_hook) (OAT_POST_ALTER,
classId, objectId, subId,
(void *) &pa_arg);
}
/*
* RunNamespaceSearchHook
*
* It is entrypoint of OAT_NAMESPACE_SEARCH event
*/
bool
RunNamespaceSearchHook(Oid objectId, bool ereport_on_violation)
{
ObjectAccessNamespaceSearch ns_arg;
/* caller should check, but just in case... */
Assert(object_access_hook != NULL);
memset(&ns_arg, 0, sizeof(ObjectAccessNamespaceSearch));
ns_arg.ereport_on_violation = ereport_on_violation;
ns_arg.result = true;
(*object_access_hook) (OAT_NAMESPACE_SEARCH,
NamespaceRelationId, objectId, 0,
(void *) &ns_arg);
return ns_arg.result;
}
/*
* RunFunctionExecuteHook
*
* It is entrypoint of OAT_FUNCTION_EXECUTE event
*/
void
RunFunctionExecuteHook(Oid objectId)
{
/* caller should check, but just in case... */
Assert(object_access_hook != NULL);
(*object_access_hook) (OAT_FUNCTION_EXECUTE,
ProcedureRelationId, objectId, 0,
NULL);
}
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