src/src/lookups/cdb.h

   1 /* $Cambridge: exim/src/src/lookups/cdb.h,v 1.1 2004/10/07 13:10:01 ph10 Exp $ */
   2
   3 /*************************************************
   4 *     Exim - an Internet mail transport agent    *
   5 *************************************************/
   6
   7 /*
   8  * $Id: cdb.h,v 1.2.2.1 1998/05/29 16:21:36 cvs Exp $
   9  *
  10  * Exim - CDB database lookup module
  11  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  12  *
  13  * Copyright (c) 1998 Nigel Metheringham, Planet Online Ltd
  14  *
  15  * This program is free software; you can redistribute it and/or
  16  * modify it under the terms of the GNU General Public License
  17  * as published by the Free Software Foundation; either version 2
  18  * of the License, or (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License
  26  * along with this program; if not, write to the Free Software
  27  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  28  * 02111-1307, USA.
  29  *
  30  *
  31  * This code implements Dan Bernstein's Constant DataBase (cdb) spec.
  32  * Information, the spec and sample code for cdb can be obtained from
  33  *      http://www.pobox.com/~djb/cdb.html
  34  *
  35  * This implementation borrows some code from Dan Bernstein's
  36  * implementation (which has no license restrictions applied to it).
  37  * This (read-only) implementation is completely contained within
  38  * cdb.[ch] it does *not* link against an external cdb library.
  39  *
  40  *
  41  * There are 2 varients included within this code.  One uses MMAP and
  42  * should give better performance especially for multiple lookups on a
  43  * modern machine.  The other is the default implementation which is
  44  * used in the case where the MMAP fails or if MMAP was not compiled
  45  * in.  this implementation is the same as the original reference cdb
  46  * implementation.
  47  *
  48  */
  49
  50
  51 /* Functions for reading exim cdb files */
  52
  53 extern void *cdb_open(uschar *, uschar **);
  54 extern BOOL  cdb_check(void *, uschar *, int, uid_t *, gid_t *, uschar **);
  55 extern int   cdb_find(void *, uschar *, uschar *, int, uschar **, uschar **,
  56                BOOL *);
  57 extern void  cdb_close(void *);
  58
  59 /* End of cdb.h */