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Diffstat (limited to '')
| -rw-r--r-- | servers/slapd/back-mdb/idl.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/servers/slapd/back-mdb/idl.h b/servers/slapd/back-mdb/idl.h new file mode 100644 index 0000000..1414afe --- /dev/null +++ b/servers/slapd/back-mdb/idl.h @@ -0,0 +1,116 @@ +/* idl.h - ldap mdb back-end ID list 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 _MDB_IDL_H_ +#define _MDB_IDL_H_ + +/* IDL sizes - likely should be even bigger + * limiting factors: sizeof(ID), thread stack size + */ +#define MDB_IDL_LOGN 16 /* DB_SIZE is 2^16, UM_SIZE is 2^17 */ +#define MDB_IDL_DB_SIZE (1<<MDB_IDL_LOGN) +#define MDB_IDL_UM_SIZE (1<<(MDB_IDL_LOGN+1)) +#define MDB_IDL_UM_SIZEOF (MDB_IDL_UM_SIZE * sizeof(ID)) + +#define MDB_IDL_DB_MAX (MDB_IDL_DB_SIZE-1) + +#define MDB_IDL_UM_MAX (MDB_IDL_UM_SIZE-1) + +#define MDB_IDL_IS_RANGE(ids) ((ids)[0] == NOID) +#define MDB_IDL_RANGE_SIZE (3) +#define MDB_IDL_RANGE_SIZEOF (MDB_IDL_RANGE_SIZE * sizeof(ID)) +#define MDB_IDL_SIZEOF(ids) ((MDB_IDL_IS_RANGE(ids) \ + ? MDB_IDL_RANGE_SIZE : ((ids)[0]+1)) * sizeof(ID)) + +#define MDB_IDL_RANGE_FIRST(ids) ((ids)[1]) +#define MDB_IDL_RANGE_LAST(ids) ((ids)[2]) + +#define MDB_IDL_RANGE( ids, f, l ) \ + do { \ + (ids)[0] = NOID; \ + (ids)[1] = (f); \ + (ids)[2] = (l); \ + } while(0) + +#define MDB_IDL_ZERO(ids) \ + do { \ + (ids)[0] = 0; \ + (ids)[1] = 0; \ + (ids)[2] = 0; \ + } while(0) + +#define MDB_IDL_IS_ZERO(ids) ( (ids)[0] == 0 ) +#define MDB_IDL_IS_ALL( range, ids ) ( (ids)[0] == NOID \ + && (ids)[1] <= (range)[1] && (range)[2] <= (ids)[2] ) + +#define MDB_IDL_CPY( dst, src ) (AC_MEMCPY( dst, src, MDB_IDL_SIZEOF( src ) )) + +#define MDB_IDL_ID( mdb, ids, id ) MDB_IDL_RANGE( ids, id, NOID ) +#define MDB_IDL_ALL( ids ) MDB_IDL_RANGE( ids, 1, NOID ) + +#define MDB_IDL_FIRST( ids ) ( (ids)[1] ) +#define MDB_IDL_LLAST( ids ) ( (ids)[(ids)[0]] ) +#define MDB_IDL_LAST( ids ) ( MDB_IDL_IS_RANGE(ids) \ + ? (ids)[2] : (ids)[(ids)[0]] ) + +#define MDB_IDL_N( ids ) ( MDB_IDL_IS_RANGE(ids) \ + ? ((ids)[2]-(ids)[1])+1 : (ids)[0] ) + + /** An ID2 is an ID/value pair. + */ +typedef struct ID2 { + ID mid; /**< The ID */ + MDB_val mval; /**< The value */ +} ID2; + + /** An ID2L is an ID2 List, a sorted array of ID2s. + * The first element's \b mid member is a count of how many actual + * elements are in the array. The \b mptr member of the first element is unused. + * The array is sorted in ascending order by \b mid. + */ +typedef ID2 *ID2L; + +typedef struct IdScopes { + MDB_txn *mt; + MDB_cursor *mc; + ID id; + ID2L scopes; + ID2L sctmp; + int numrdns; + int nscope; + int oscope; + struct berval rdns[MAXRDNS]; + struct berval nrdns[MAXRDNS]; +} IdScopes; + +LDAP_BEGIN_DECL + /** Search for an ID in an ID2L. + * @param[in] ids The ID2L to search. + * @param[in] id The ID to search for. + * @return The index of the first ID2 whose \b mid member is greater than or equal to \b id. + */ +unsigned mdb_id2l_search( ID2L ids, ID id ); + + + /** Insert an ID2 into a ID2L. + * @param[in,out] ids The ID2L to insert into. + * @param[in] id The ID2 to insert. + * @return 0 on success, -1 if the ID was already present in the MIDL2. + */ +int mdb_id2l_insert( ID2L ids, ID2 *id ); +LDAP_END_DECL + +#endif |