Convenience routine for checking superuser status.

src/backend/utils/misc/Makefile

+#-------------------------------------------------------------------------
+#
+# Makefile--
+#    Makefile for utils/misc
+#
+# IDENTIFICATION
+#    $Header: /cvsroot/pgsql/src/backend/utils/misc/Makefile,v 1.1 1996/11/02 02:06:46 bryanh Exp $
+#
+#-------------------------------------------------------------------------
+
+SRCDIR = ../../..
+include ../../../Makefile.global
+
+INCLUDE_OPT =  \
+              -I../../port/$(PORTNAME) \
+              -I../../include \
+              -I../../../include
+
+CFLAGS += $(INCLUDE_OPT)
+
+OBJS = superuser.o 
+
+all: SUBSYS.o
+
+SUBSYS.o: $(OBJS)
+	$(LD) -r -o SUBSYS.o $(OBJS)
+
+depend dep:
+	$(CC) -MM $(INCLUDE_OPT) *.c >depend
+
+clean: 
+	rm -f SUBSYS.o $(OBJS)
+
+ifeq (depend,$(wildcard depend))
+include depend
+endif
+

src/backend/utils/misc/superuser.c

+/*-------------------------------------------------------------------------
+ *
+ * superuser.c--
+ *
+ *    The superuser() function.  Determines if user has superuser privilege.
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ *    $Header: /cvsroot/pgsql/src/backend/utils/misc/superuser.c,v 1.1 1996/11/02 02:06:47 bryanh Exp $
+ *
+ * DESCRIPTION
+ *    See superuser().
+ *-------------------------------------------------------------------------
+ */
+
+#include <c.h>
+#include <postgres.h>
+#include <access/htup.h>
+#include <utils/syscache.h>
+#include <catalog/pg_user.h>
+
+
+
+bool
+superuser(void) {
+/*--------------------------------------------------------------------------
+    The Postgres user running this command has Postgres superuser 
+    privileges.
+--------------------------------------------------------------------------*/
+    extern char *UserName;  /* defined in global.c */
+
+    HeapTuple utup;
+
+    utup = SearchSysCacheTuple(USENAME, PointerGetDatum(UserName),
+			       0,0,0);
+    Assert(utup != NULL);
+    return ((Form_pg_user)GETSTRUCT(utup))->usesuper;
+}
+
+
+