granicus.if.org Git - postgresql/blob - src/backend/utils/misc/superuser.c

   1 /*-------------------------------------------------------------------------
   2  *
   3  * superuser.c
   4  *
   5  *        The superuser() function.  Determines if user has superuser privilege.
   6  *
   7  * Copyright (c) 1994, Regents of the University of California
   8  *
   9  *
  10  * IDENTIFICATION
  11  *        $Header: /cvsroot/pgsql/src/backend/utils/misc/superuser.c,v 1.11 1999/11/22 17:56:35 momjian Exp $
  12  *
  13  * DESCRIPTION
  14  *        See superuser().
  15  *-------------------------------------------------------------------------
  16  */
  17
  18 #include "postgres.h"
  19 #include "catalog/pg_shadow.h"
  20 #include "utils/syscache.h"
  21
  22 bool
  23 superuser(void)
  24 {
  25 /*--------------------------------------------------------------------------
  26         The Postgres user running this command has Postgres superuser
  27         privileges.
  28 --------------------------------------------------------------------------*/
  29         extern char *UserName;          /* defined in global.c */
  30
  31         HeapTuple       utup;
  32
  33         utup = SearchSysCacheTuple(USERNAME,
  34                                                            PointerGetDatum(UserName),
  35                                                            0, 0, 0);
  36         Assert(utup != NULL);
  37         return ((Form_pg_shadow) GETSTRUCT(utup))->usesuper;
  38 }