usr/src/ucbhead/dbm.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30 /*
  31  * University Copyright- Copyright (c) 1982, 1986, 1988
  32  * The Regents of the University of California
  33  * All Rights Reserved
  34  *
  35  * University Acknowledgment- Portions of this document are derived from
  36  * software developed by the University of California, Berkeley, and its
  37  * contributors.
  38  */
  39
  40 #ifndef _DBM_H
  41 #define _DBM_H
  42
  43 #include <sys/isa_defs.h>
  44 #include <sys/null.h>
  45
  46 #ifdef __cplusplus
  47 extern "C" {
  48 #endif
  49
  50 #define PBLKSIZ 1024
  51 #define DBLKSIZ 4096
  52 #define BYTESIZ 8
  53
  54 long    bitno;
  55 long    maxbno;
  56 long    blkno;
  57 long    hmask;
  58
  59 char    pagbuf[PBLKSIZ];
  60 char    dirbuf[DBLKSIZ];
  61
  62 int     dirf;
  63 int     pagf;
  64 int     dbrdonly;
  65
  66 #ifndef DATUM
  67 typedef struct
  68 {
  69         char    *dptr;
  70         int     dsize;
  71 } datum;
  72 #define DATUM
  73 #endif
  74
  75 #ifdef __STDC__
  76 datum   fetch(datum);
  77 datum   makdatum(char *, int);
  78 datum   firstkey(void);
  79 datum   nextkey(datum);
  80 datum   firsthash(long);
  81 long    calchash(datum);
  82 long    hashinc(long);
  83 #else
  84 datum   fetch();
  85 datum   makdatum();
  86 datum   firstkey();
  87 datum   nextkey();
  88 datum   firsthash();
  89 long    calchash();
  90 long    hashinc();
  91 #endif
  92
  93 #ifdef __cplusplus
  94 }
  95 #endif
  96
  97 #endif  /* _DBM_H */