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  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
   8  * Portions Copyright (c) 1994, Regents of the University of California
   9  *
  10  *
  11  * IDENTIFICATION
  12  *        $Header: /cvsroot/pgsql/src/backend/utils/misc/superuser.c,v 1.17 2001/01/24 19:43:16 momjian Exp $
  13  *
  14  * DESCRIPTION
  15  *        See superuser().
  16  *-------------------------------------------------------------------------
  17  */
  18
  19 #include "postgres.h"
  20 #include "catalog/pg_shadow.h"
  21 #include "utils/syscache.h"
  22 #include "miscadmin.h"
  23
  24 bool
  25 superuser(void)
  26 {
  27 /*--------------------------------------------------------------------------
  28         The Postgres user running this command has Postgres superuser
  29         privileges.
  30 --------------------------------------------------------------------------*/
  31         HeapTuple       utup;
  32         bool            result;
  33
  34         utup = SearchSysCache(SHADOWSYSID,
  35                                                   ObjectIdGetDatum(GetUserId()),
  36                                                   0, 0, 0);
  37         if (HeapTupleIsValid(utup))
  38         {
  39                 result = ((Form_pg_shadow) GETSTRUCT(utup))->usesuper;
  40                 ReleaseSysCache(utup);
  41                 return result;
  42         }
  43         return false;
  44 }