openldap/include/ldbm.h

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/*
* Copyright 1998,1999 The OpenLDAP Foundation, Redwood City, California, USA
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted only
* as authorized by the OpenLDAP Public License. A copy of this
* license is available at http://www.OpenLDAP.org/license.html or
* in file LICENSE in the top-level directory of the distribution.
*/
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/* ldbm.h - ldap dbm compatibility routine header file */
#ifndef _LDBM_H_
#define _LDBM_H_
#include <ldap_cdefs.h>
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#ifdef LDBM_USE_DBBTREE
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/*****************************************************************
* *
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* use berkeley db btree package *
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* *
*****************************************************************/
#include <sys/types.h>
#include <limits.h>
#include <fcntl.h>
#ifdef HAVE_DB_185_H
# include <db_185.h>
#else
# include <db.h>
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# ifdef HAVE_BERKELEY_DB2
# define R_NOOVERWRITE DB_NOOVERWRITE
# define DEFAULT_DB_PAGE_SIZE 1024
# endif
#endif
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LDAP_BEGIN_DECL
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typedef DBT Datum;
#define dsize size
#define dptr data
typedef DB *LDBM;
LDAP_END_DECL
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#define DB_TYPE DB_BTREE
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/* for ldbm_open */
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#ifdef HAVE_BERKELEY_DB2
# define LDBM_READER DB_RDONLY
# define LDBM_WRITER 0x00000 /* hopefully */
# define LDBM_WRCREAT (DB_NOMMAP|DB_CREATE|DB_THREAD)
# define LDBM_NEWDB (DB_TRUNCATE|DB_CREATE|DB_THREAD)
#else
# define LDBM_READER O_RDONLY
# define LDBM_WRITER O_RDWR
# define LDBM_WRCREAT (O_RDWR|O_CREAT)
# define LDBM_NEWDB (O_RDWR|O_TRUNC|O_CREAT)
#endif
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# define LDBM_FAST 0
#define LDBM_SUFFIX ".dbb"
#define LDBM_ORDERED 1
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/* for ldbm_insert */
#define LDBM_INSERT R_NOOVERWRITE
#define LDBM_REPLACE 0
#define LDBM_SYNC 0x80000000
#elif defined( LDBM_USE_DBHASH )
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/*****************************************************************
* *
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* use berkeley db hash package *
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* *
*****************************************************************/
#include <sys/types.h>
#include <limits.h>
#include <fcntl.h>
#ifdef HAVE_DB_185_H
# include <db_185.h>
#else
# include <db.h>
# ifdef LDBM_USE_DB2
# define R_NOOVERWRITE DB_NOOVERWRITE
# define DEFAULT_DB_PAGE_SIZE 1024
# endif
#endif
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LDAP_BEGIN_DECL
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typedef DBT Datum;
#define dsize size
#define dptr data
typedef DB *LDBM;
LDAP_END_DECL
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#define DB_TYPE DB_HASH
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/* for ldbm_open */
#ifdef LDBM_USE_DB2
# define LDBM_READER DB_RDONLY
# define LDBM_WRITER 0x00000 /* hopefully */
# define LDBM_WRCREAT (DB_NOMMAP|DB_CREATE|DB_THREAD)
# define LDBM_NEWDB (DB_TRUNCATE|DB_CREATE|DB_THREAD)
#else
# define LDBM_READER O_RDONLY
# define LDBM_WRITER O_RDWR
# define LDBM_WRCREAT (O_RDWR|O_CREAT)
# define LDBM_NEWDB (O_RDWR|O_TRUNC|O_CREAT)
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# define LDBM_FAST 0
#endif
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#define LDBM_SUFFIX ".dbh"
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/* for ldbm_insert */
#define LDBM_INSERT R_NOOVERWRITE
#define LDBM_REPLACE 0
#define LDBM_SYNC 0x80000000
#elif defined( HAVE_GDBM )
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/*****************************************************************
* *
* use gdbm if possible *
* *
*****************************************************************/
#include <gdbm.h>
LDAP_BEGIN_DECL
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typedef datum Datum;
typedef GDBM_FILE LDBM;
extern gdbm_error gdbm_errno;
LDAP_END_DECL
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/* for ldbm_open */
#define LDBM_READER GDBM_READER
#define LDBM_WRITER GDBM_WRITER
#define LDBM_WRCREAT GDBM_WRCREAT
#define LDBM_NEWDB GDBM_NEWDB
#define LDBM_FAST GDBM_FAST
#define LDBM_SUFFIX ".gdbm"
/* for ldbm_insert */
#define LDBM_INSERT GDBM_INSERT
#define LDBM_REPLACE GDBM_REPLACE
#define LDBM_SYNC 0x80000000
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#elif defined( HAVE_NDBM )
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/*****************************************************************
* *
* if none of the above use ndbm, the standard unix thing *
* *
*****************************************************************/
#include <ndbm.h>
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
#endif
LDAP_BEGIN_DECL
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typedef datum Datum;
typedef DBM *LDBM;
LDAP_END_DECL
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/* for ldbm_open */
#define LDBM_READER O_RDONLY
#define LDBM_WRITER O_WRONLY
#define LDBM_WRCREAT (O_RDWR|O_CREAT)
#define LDBM_NEWDB (O_RDWR|O_TRUNC|O_CREAT)
#define LDBM_FAST 0
#define LDBM_SUFFIX ".ndbm"
/* for ldbm_insert */
#define LDBM_INSERT DBM_INSERT
#define LDBM_REPLACE DBM_REPLACE
#define LDBM_SYNC 0
#endif
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LDAP_BEGIN_DECL
int ldbm_initialize( void );
int ldbm_shutdown( void );
#if HAVE_BERKELEY_DB2
extern DB_ENV ldbm_Env;
#endif
int ldbm_errno( LDBM ldbm );
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LDBM ldbm_open( char *name, int rw, int mode, int dbcachesize );
void ldbm_close( LDBM ldbm );
void ldbm_sync( LDBM ldbm );
void ldbm_datum_free( LDBM ldbm, Datum data );
Datum ldbm_datum_dup( LDBM ldbm, Datum data );
Datum ldbm_fetch( LDBM ldbm, Datum key );
int ldbm_store( LDBM ldbm, Datum key, Datum data, int flags );
int ldbm_delete( LDBM ldbm, Datum key );
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#if HAVE_BERKELEY_DB2
void *ldbm_malloc( size_t size );
Datum ldbm_firstkey( LDBM ldbm, DBC **dbch );
Datum ldbm_nextkey( LDBM ldbm, Datum key, DBC *dbcp );
#else
Datum ldbm_firstkey( LDBM ldbm );
Datum ldbm_nextkey( LDBM ldbm, Datum key );
#endif
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/* initialization of Datum structures */
#ifdef HAVE_BERKELEY_DB2
# define ldbm_datum_init(d) ((void)memset(&(d), 0, sizeof(Datum)))
#else
# define ldbm_datum_init(d) ((void)0)
#endif /* HAVE_BERKELEY_DB2 */
LDAP_END_DECL
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#endif /* _ldbm_h_ */