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https://git.openldap.org/openldap/openldap.git
synced 2024-12-15 03:01:09 +08:00
35655c056f
Old code applied sync flags to store(), however supported DBMs require such flags to be specified during open(). The new code now applies flags in ldbm_cache_open (which calls ldbm_open). ldbm_cache_close() now calls ldbm_sync(). This will force a updating of on-disk contents after each LDAP operation. The old code either failed to sync the on-disk contents until close or synced on every store. Per LDBM operation syncing *should* be safe enough... real data safety requires transactions. Removed nosync option from BDB2 as it is not compatible with txn support. Also added code to disable DBM level locking as slapd is only process acessing the databases (dbnolocking).
255 lines
5.9 KiB
C
255 lines
5.9 KiB
C
/* $OpenLDAP$ */
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/*
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* Copyright 1998,1999 The OpenLDAP Foundation, Redwood City, California, USA
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms are permitted only
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* as authorized by the OpenLDAP Public License. A copy of this
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* license is available at http://www.OpenLDAP.org/license.html or
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* in file LICENSE in the top-level directory of the distribution.
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*/
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/* ldbm.h - ldap dbm compatibility routine header file */
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#ifndef _LDBM_H_
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#define _LDBM_H_
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#include <ldap_cdefs.h>
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#if defined( LDBM_USE_DBBTREE ) || defined( LDBM_USE_DBHASH )
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/*****************************************************************
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* *
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* use berkeley db btree or hash package *
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* *
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*****************************************************************/
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#include <sys/types.h>
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#include <limits.h>
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#include <fcntl.h>
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#ifdef HAVE_DB_185_H
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# include <db_185.h>
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#else
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# ifdef HAVE_DB1_DB_H
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# include <db1/db.h>
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# else
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# include <db.h>
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# endif
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# ifdef HAVE_BERKELEY_DB2
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# define R_NOOVERWRITE DB_NOOVERWRITE
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# define DEFAULT_DB_PAGE_SIZE 1024
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# endif
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#endif
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LDAP_BEGIN_DECL
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typedef DBT Datum;
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#define dsize size
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#define dptr data
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typedef DB *LDBM;
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/* for ldbm_open */
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#ifdef HAVE_BERKELEY_DB2
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typedef DBC LDBMCursor;
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# define LDBM_READER DB_RDONLY
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# define LDBM_WRITER 0x00000 /* hopefully */
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# ifdef HAVE_BERKELEY_DB2_DB_THREAD
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# define LDBM_WRCREAT (DB_NOMMAP|DB_CREATE|DB_THREAD)
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# define LDBM_NEWDB (DB_TRUNCATE|DB_CREATE|DB_THREAD)
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# else
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# define LDBM_WRCREAT (DB_NOMMAP|DB_CREATE|DB_THREAD)
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# define LDBM_NEWDB (DB_TRUNCATE|DB_CREATE|DB_THREAD)
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# endif
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#else
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typedef int LDBMCursor;
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# define LDBM_READER O_RDONLY
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# define LDBM_WRITER O_RDWR
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# define LDBM_WRCREAT (O_RDWR|O_CREAT)
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# define LDBM_NEWDB (O_RDWR|O_TRUNC|O_CREAT)
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#endif
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LDAP_END_DECL
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/* for ldbm_open */
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#define LDBM_NOSYNC 0
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#define LDBM_SYNC 0
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#define LDBM_LOCKING 0
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#define LDBM_NOLOCKING 0
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/* for ldbm_insert */
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#define LDBM_INSERT R_NOOVERWRITE
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#define LDBM_REPLACE 0
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#ifdef LDBM_USE_DBBTREE
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# define LDBM_ORDERED 1
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# define LDBM_SUFFIX ".dbb"
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# define DB_TYPE DB_BTREE
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#else
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# define LDBM_SUFFIX ".dbh"
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# define DB_TYPE DB_HASH
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#endif
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#elif defined( HAVE_GDBM )
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/*****************************************************************
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* *
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* use gdbm if possible *
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* *
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*****************************************************************/
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#include <gdbm.h>
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LDAP_BEGIN_DECL
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typedef datum Datum;
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typedef int LDBMCursor;
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typedef GDBM_FILE LDBM;
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extern gdbm_error gdbm_errno;
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LDAP_END_DECL
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/* for ldbm_open */
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#define LDBM_READER GDBM_READER
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#define LDBM_WRITER GDBM_WRITER
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#define LDBM_WRCREAT GDBM_WRCREAT
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#define LDBM_NEWDB GDBM_NEWDB
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#ifdef GDBM_FAST
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#define LDBM_NOSYNC GDBM_FAST
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#else
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#define LDBM_NOSYNC 0
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#endif
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#ifdef GDBM_SYNC
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#define LDBM_SYNC GDBM_SYNC
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#else
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#define LDBM_SYNC 0
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#endif
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#define LDBM_LOCKING 0
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#ifdef GDBM_NOLOCK
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#define LDBM_NOLOCKING GDBM_NOLOCK
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#endif
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#define LDBM_SUFFIX ".gdbm"
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/* for ldbm_insert */
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#define LDBM_INSERT GDBM_INSERT
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#define LDBM_REPLACE GDBM_REPLACE
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#elif defined( HAVE_MDBM )
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/*****************************************************************
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* *
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* use mdbm if possible *
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* *
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*****************************************************************/
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#include <mdbm.h>
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LDAP_BEGIN_DECL
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typedef datum Datum;
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typedef int LDBMCursor;
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typedef MDBM *LDBM;
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LDAP_END_DECL
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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/* for ldbm_open */
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#define LDBM_READER O_RDONLY
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#define LDBM_WRITER O_RDWR
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#define LDBM_WRCREAT (O_RDWR|O_CREAT)
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#define LDBM_NEWDB (O_RDWR|O_TRUNC|O_CREAT)
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#define LDBM_SYNC 0
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#define LDBM_NOSYNC 0
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#define LDBM_LOCKING 0
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#define LDBM_NOLOCKING 0
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#define LDBM_SUFFIX ".mdbm"
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/* for ldbm_insert */
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#define LDBM_INSERT MDBM_INSERT
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#define LDBM_REPLACE MDBM_REPLACE
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#elif defined( HAVE_NDBM )
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/*****************************************************************
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* *
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* if none of the above use ndbm, the standard unix thing *
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* *
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*****************************************************************/
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#include <ndbm.h>
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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LDAP_BEGIN_DECL
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typedef datum Datum;
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typedef int LDBMCursor;
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typedef DBM *LDBM;
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LDAP_END_DECL
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/* for ldbm_open */
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#define LDBM_READER O_RDONLY
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#define LDBM_WRITER O_WRONLY
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#define LDBM_WRCREAT (O_RDWR|O_CREAT)
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#define LDBM_NEWDB (O_RDWR|O_TRUNC|O_CREAT)
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#define LDBM_NOSYNC 0
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#define LDBM_SYNC 0
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#define LDBM_NOLOCK 0
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#define LDBM_SYNC 0
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#define LDBM_SUFFIX ".ndbm"
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/* for ldbm_insert */
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#define LDBM_INSERT DBM_INSERT
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#define LDBM_REPLACE DBM_REPLACE
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#endif
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LDAP_BEGIN_DECL
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int ldbm_initialize( void );
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int ldbm_shutdown( void );
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int ldbm_errno( LDBM ldbm );
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LDBM ldbm_open( char *name, int rw, int mode, int dbcachesize );
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void ldbm_close( LDBM ldbm );
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void ldbm_sync( LDBM ldbm );
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void ldbm_datum_free( LDBM ldbm, Datum data );
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Datum ldbm_datum_dup( LDBM ldbm, Datum data );
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Datum ldbm_fetch( LDBM ldbm, Datum key );
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int ldbm_store( LDBM ldbm, Datum key, Datum data, int flags );
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int ldbm_delete( LDBM ldbm, Datum key );
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Datum ldbm_firstkey( LDBM ldbm, LDBMCursor **cursor );
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Datum ldbm_nextkey( LDBM ldbm, Datum key, LDBMCursor *cursor );
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/* initialization of Datum structures */
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#ifdef HAVE_BERKELEY_DB2
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void *ldbm_malloc( size_t size );
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# define ldbm_datum_init(d) ((void)memset(&(d), 0, sizeof(Datum)))
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#else
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# define ldbm_datum_init(d) ((void)0)
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#endif /* HAVE_BERKELEY_DB2 */
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LDAP_END_DECL
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#endif /* _ldbm_h_ */
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