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/* back-mdb.h - mdb back-end header file */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2000-2021 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted only as authorized by the OpenLDAP
* Public License.
*
* A copy of this license is available in the file LICENSE in the
* top-level directory of the distribution or, alternatively, at
* <http://www.OpenLDAP.org/license.html>.
*/
#ifndef _BACK_MDB_H_
#define _BACK_MDB_H_
#include <portable.h>
#include "slap.h"
#include "lmdb.h"
LDAP_BEGIN_DECL
#undef MDB_TOOL_IDL_CACHING /* currently broken */
#define DN_BASE_PREFIX SLAP_INDEX_EQUALITY_PREFIX
#define DN_ONE_PREFIX '%'
#define DN_SUBTREE_PREFIX '@'
#define MDB_AD2ID 0
#define MDB_DN2ID 1
#define MDB_ID2ENTRY 2
#define MDB_NDB 3
/* The default search IDL stack cache depth */
#define DEFAULT_SEARCH_STACK_DEPTH 16
/* The minimum we can function with */
#define MINIMUM_SEARCH_STACK_DEPTH 8
#define MDB_INDICES 128
#define MDB_MAXADS 65536
/* Default to 10MB max */
#define DEFAULT_MAPSIZE (10*1048576)
/* Most users will never see this */
#define DEFAULT_RTXN_SIZE 10000
#ifdef LDAP_DEVEL
#define MDB_MONITOR_IDX
#endif /* LDAP_DEVEL */
typedef struct mdb_monitor_t {
void *mdm_cb;
struct berval mdm_ndn;
} mdb_monitor_t;
/* From ldap_rq.h */
struct re_s;
struct mdb_info {
MDB_env *mi_dbenv;
/* DB_ENV parameters */
char *mi_dbenv_home;
unsigned mi_dbenv_flags;
int mi_dbenv_mode;
size_t mi_mapsize;
ID mi_nextid;
slap_mask_t mi_defaultmask;
int mi_nattrs;
struct mdb_attrinfo **mi_attrs;
void *mi_search_stack;
int mi_search_stack_depth;
int mi_readers;
unsigned mi_rtxn_size;
int mi_txn_cp;
unsigned mi_txn_cp_min;
unsigned mi_txn_cp_kbyte;
struct re_s *mi_txn_cp_task;
struct re_s *mi_index_task;
mdb_monitor_t mi_monitor;
#ifdef MDB_MONITOR_IDX
ldap_pvt_thread_mutex_t mi_idx_mutex;
Avlnode *mi_idx;
#endif /* MDB_MONITOR_IDX */
int mi_flags;
#define MDB_IS_OPEN 0x01
#define MDB_OPEN_INDEX 0x02
#define MDB_DEL_INDEX 0x08
#define MDB_RE_OPEN 0x10
#define MDB_NEED_UPGRADE 0x20
int mi_numads;
MDB_dbi mi_dbis[MDB_NDB];
AttributeDescription *mi_ads[MDB_MAXADS];
int mi_adxs[MDB_MAXADS];
};
#define mi_id2entry mi_dbis[MDB_ID2ENTRY]
#define mi_dn2id mi_dbis[MDB_DN2ID]
#define mi_ad2id mi_dbis[MDB_AD2ID]
typedef struct mdb_op_info {
OpExtra moi_oe;
MDB_txn* moi_txn;
int moi_ref;
char moi_flag;
} mdb_op_info;
#define MOI_READER 0x01
#define MOI_FREEIT 0x02
/* Copy an ID "src" to pointer "dst" in big-endian byte order */
#define MDB_ID2DISK( src, dst ) \
do { int i0; ID tmp; unsigned char *_p; \
tmp = (src); _p = (unsigned char *)(dst); \
for ( i0=sizeof(ID)-1; i0>=0; i0-- ) { \
_p[i0] = tmp & 0xff; tmp >>= 8; \
} \
} while(0)
/* Copy a pointer "src" to a pointer "dst" from big-endian to native order */
#define MDB_DISK2ID( src, dst ) \
do { unsigned i0; ID tmp = 0; unsigned char *_p; \
_p = (unsigned char *)(src); \
for ( i0=0; i0<sizeof(ID); i0++ ) { \
tmp <<= 8; tmp |= *_p++; \
} *(dst) = tmp; \
} while (0)
LDAP_END_DECL
/* for the cache of attribute information (which are indexed, etc.) */
typedef struct mdb_attrinfo {
AttributeDescription *ai_desc; /* attribute description cn;lang-en */
slap_mask_t ai_indexmask; /* how the attr is indexed */
slap_mask_t ai_newmask; /* new settings to replace old mask */
#ifdef LDAP_COMP_MATCH
ComponentReference* ai_cr; /*component indexing*/
#endif
Avlnode *ai_root; /* for tools */
void *ai_flist; /* for tools */
void *ai_clist; /* for tools */
MDB_cursor *ai_cursor; /* for tools */
int ai_idx; /* position in AI array */
MDB_dbi ai_dbi;
} AttrInfo;
/* These flags must not clash with SLAP_INDEX flags or ops in slap.h! */
#define MDB_INDEX_DELETING 0x8000U /* index is being modified */
#define MDB_INDEX_UPDATE_OP 0x03 /* performing an index update */
/* For slapindex to record which attrs in an entry belong to which
* index database
*/
typedef struct AttrList {
struct AttrList *next;
Attribute *attr;
} AttrList;
#ifndef CACHELINE
#define CACHELINE 64
#endif
#if defined(__i386) || defined(__x86_64)
#define MISALIGNED_OK 1
#else
#define ALIGNER (sizeof(size_t)-1)
#endif
typedef struct IndexRbody {
AttrInfo *ai;
AttrList *attrs;
void *tptr;
int i;
} IndexRbody;
typedef struct IndexRec {
union {
IndexRbody irb;
#define ir_ai iru.irb.ai
#define ir_attrs iru.irb.attrs
#define ir_tptr iru.irb.tptr
#define ir_i iru.irb.i
/* cache line alignment */
char pad[(sizeof(IndexRbody)+CACHELINE-1) & (!CACHELINE-1)];
} iru;
} IndexRec;
#define MAXRDNS SLAP_LDAPDN_MAXLEN/4
#include "proto-mdb.h"
#endif /* _BACK_MDB_H_ */
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