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diff --git a/src/include/utils/aclchk_internal.h b/src/include/utils/aclchk_internal.h
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+++ b/src/include/utils/aclchk_internal.h
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+/*-------------------------------------------------------------------------
+ *
+ * aclchk_internal.h
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/utils/aclchk_internal.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef ACLCHK_INTERNAL_H
+#define ACLCHK_INTERNAL_H
+
+#include "nodes/parsenodes.h"
+#include "nodes/pg_list.h"
+
+/*
+ * The information about one Grant/Revoke statement, in internal format: object
+ * and grantees names have been turned into Oids, the privilege list is an
+ * AclMode bitmask.  If 'privileges' is ACL_NO_RIGHTS (the 0 value) and
+ * all_privs is true, 'privileges' will be internally set to the right kind of
+ * ACL_ALL_RIGHTS_*, depending on the object type (NB - this will modify the
+ * InternalGrant struct!)
+ *
+ * Note: 'all_privs' and 'privileges' represent object-level privileges only.
+ * There might also be column-level privilege specifications, which are
+ * represented in col_privs (this is a list of untransformed AccessPriv nodes).
+ * Column privileges are only valid for objtype OBJECT_TABLE.
+ */
+typedef struct
+{
+	bool		is_grant;
+	ObjectType	objtype;
+	List	   *objects;
+	bool		all_privs;
+	AclMode		privileges;
+	List	   *col_privs;
+	List	   *grantees;
+	bool		grant_option;
+	DropBehavior behavior;
+} InternalGrant;
+
+
+#endif							/* ACLCHK_INTERNAL_H */