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249 lines
6.7 KiB
C
249 lines
6.7 KiB
C
/* config.c - bdb backend configuration file routine */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 2000-2005 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/string.h>
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#include "back-bdb.h"
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#include "config.h"
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#ifdef DB_DIRTY_READ
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# define SLAP_BDB_ALLOW_DIRTY_READ
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#endif
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static ObjectClass *bdb_oc;
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static ConfigDriver bdb_cf_oc, bdb_cf_gen;
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enum {
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BDB_CHKPT = 1,
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BDB_NOSYNC,
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BDB_DIRTYR,
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BDB_INDEX,
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BDB_LOCKD,
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BDB_SSTACK
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};
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static ConfigTable bdbcfg[] = {
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{ "", "", 0, 0, 0, ARG_MAGIC,
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bdb_cf_oc, NULL, NULL, NULL },
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{ "directory", "dir", 2, 2, 0, ARG_STRING|ARG_OFFSET,
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(void *)offsetof(struct bdb_info, bi_dbenv_home),
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"( OLcfgAt:1.1 NAME 'dbDirectory' "
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"DESC 'Directory for database content' "
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"EQUALITY caseIgnoreMatch "
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"SYNTAX OMsDirectoryString )", NULL, NULL },
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{ "cachesize", "size", 2, 2, 0, ARG_INT|ARG_NONZERO|ARG_OFFSET,
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(void *)offsetof(struct bdb_info, bi_cache.c_maxsize),
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"( OLcfgAt:1.2 NAME 'dbCacheSize' "
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"DESC 'Entry cache size in entries' "
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"SYNTAX OMsInteger )", NULL, NULL },
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{ "checkpoint", "kbyte> <min", 3, 3, 0, ARG_MAGIC|BDB_CHKPT,
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bdb_cf_gen, "( OLcfgAt:1.3 NAME 'dbCheckpoint' "
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"DESC 'Database checkpoint interval in kbytes and minutes' "
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"SYNTAX OMsDirectoryString )",NULL, NULL },
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{ "dbnosync", NULL, 1, 2, 0, ARG_ON_OFF|ARG_MAGIC|BDB_NOSYNC,
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bdb_cf_gen, "( OLcfgAt:1.4 NAME 'dbNoSync' "
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"DESC 'Disable synchronous database writes' "
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"SYNTAX OMsBoolean )", NULL, NULL },
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{ "dirtyread", NULL, 1, 2, 0,
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#ifdef SLAP_BDB_ALLOW_DIRTY_READ
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ARG_ON_OFF|ARG_MAGIC|BDB_DIRTYR, bdb_cf_gen,
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#else
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ARG_IGNORED, NULL,
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#endif
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"( OLcfgAt:1.5 NAME 'dbDirtyRead' "
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"DESC 'Allow reads of uncommitted data' "
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"SYNTAX OMsBoolean )", NULL, NULL },
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{ "idlcachesize", "size", 2, 2, 0, ARG_INT|ARG_NONZERO|ARG_OFFSET,
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(void *)offsetof(struct bdb_info,bi_idl_cache_max_size),
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"( OLcfgAt:1.6 NAME 'dbIDLcacheSize' "
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"DESC 'IDL cache size in IDLs' "
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"SYNTAX OMsInteger )", NULL, NULL },
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{ "index", "attr> <[pres,eq,approx,sub]", 3, 3, 0, ARG_MAGIC|BDB_INDEX,
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bdb_cf_gen, "( OLcfgAt:1.7 NAME 'dbIndex' "
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"DESC 'Attribute index parameters' "
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"SYNTAX OMsDirectoryString )", NULL, NULL },
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{ "linearindex", NULL, 1, 2, 0, ARG_ON_OFF|ARG_OFFSET,
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(void *)offsetof(struct bdb_info, bi_linear_index),
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"( OLcfgAt:1.8 NAME 'dbLinearIndex' "
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"DESC 'Index attributes one at a time' "
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"SYNTAX OMsBoolean )", NULL, NULL },
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{ "lockdetect", "policy", 2, 2, 0, ARG_MAGIC|BDB_LOCKD,
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bdb_cf_gen, "( OLcfgAt:1.9 NAME 'dbLockDetect' "
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"DESC 'Deadlock detection algorithm' "
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"SYNTAX OMsDirectoryString )", NULL, NULL },
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{ "mode", "mode", 2, 2, 0, ARG_LONG|ARG_OFFSET,
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(void *)offsetof(struct bdb_info, bi_dbenv_mode),
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"( OLcfgAt:1.10 NAME 'dbMode' "
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"DESC 'Unix permissions of database files' "
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"SYNTAX OMsInteger )", NULL, NULL },
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{ "searchstack", "depth", 2, 2, 0, ARG_INT|ARG_MAGIC|BDB_SSTACK,
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bdb_cf_gen, "( OLcfgAt:1.11 NAME 'dbSearchStack' "
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"DESC 'Depth of search stack in IDLs' "
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"SYNTAX OMsInteger )", NULL, NULL },
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{ "shm_key", "key", 2, 2, 0, ARG_INT|ARG_NONZERO|ARG_OFFSET,
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(void *)offsetof(struct bdb_info, bi_shm_key),
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"( OLcfgAt:1.12 NAME 'dbShmKey' "
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"DESC 'Key for shared memory region' "
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"SYNTAX OMsInteger )", NULL, NULL },
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{ NULL, NULL, 0, 0, 0, ARG_IGNORED,
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NULL, NULL, NULL, NULL }
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};
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static ConfigOCs bdbocs[] = {
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{ "( OLcfgOc:1.1 "
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"NAME 'bdbConfig' "
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"DESC 'BDB backend configuration' "
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"AUXILIARY "
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"MAY ( dbDirectory $ dbCacheSize $ dbCheckpoint $ dbNoSync $ "
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"dbDirtyRead $ dbIDLcacheSize $ dbIndex $ dbLinearIndex $ "
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"dbLockDetect $ dbMode $ dbSearchStack $ dbShmKey ) )",
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&bdb_oc },
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{ NULL, NULL }
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};
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static int
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bdb_cf_oc(ConfigArgs *c)
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{
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if ( c->emit ) {
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value_add_one( &c->rvalue_vals, &bdb_oc->soc_cname );
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return 0;
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}
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return 1;
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}
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static slap_verbmasks bdb_lockd[] = {
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{ BER_BVC("default"), DB_LOCK_DEFAULT },
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{ BER_BVC("oldest"), DB_LOCK_OLDEST },
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{ BER_BVC("random"), DB_LOCK_RANDOM },
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{ BER_BVC("youngest"), DB_LOCK_YOUNGEST },
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{ BER_BVC("fewest"), DB_LOCK_MINLOCKS },
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{ BER_BVNULL, 0 }
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};
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static int
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bdb_cf_gen(ConfigArgs *c)
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{
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struct bdb_info *bdb = c->be->be_private;
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int rc;
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if ( c->emit ) {
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rc = 0;
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switch( c->type ) {
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case BDB_CHKPT:
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if (bdb->bi_txn_cp ) {
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char buf[64];
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struct berval bv;
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bv.bv_len = sprintf( buf, "%d %d", bdb->bi_txn_cp_kbyte,
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bdb->bi_txn_cp_min );
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bv.bv_val = buf;
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value_add_one( &c->rvalue_vals, &bv );
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} else{
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rc = 1;
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}
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break;
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case BDB_NOSYNC:
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if ( bdb->bi_dbenv_xflags & DB_TXN_NOSYNC )
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c->value_int = 1;
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break;
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case BDB_INDEX:
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bdb_attr_index_unparse( bdb, &c->rvalue_vals );
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if ( !c->rvalue_vals ) rc = 1;
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break;
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case BDB_LOCKD:
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rc = 1;
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if ( bdb->bi_lock_detect != DB_LOCK_DEFAULT ) {
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int i;
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for (i=0; !BER_BVISNULL(&bdb_lockd[i].word); i++) {
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if ( bdb->bi_lock_detect == bdb_lockd[i].mask ) {
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value_add_one( &c->rvalue_vals, &bdb_lockd[i].word );
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rc = 0;
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break;
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}
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}
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}
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break;
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case BDB_SSTACK:
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c->value_int = bdb->bi_search_stack_depth;
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break;
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}
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return rc;
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}
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switch( c->type ) {
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case BDB_CHKPT:
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bdb->bi_txn_cp = 1;
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bdb->bi_txn_cp_kbyte = strtol( c->argv[1], NULL, 0 );
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bdb->bi_txn_cp_min = strtol( c->argv[2], NULL, 0 );
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break;
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case BDB_NOSYNC:
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if ( c->value_int )
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bdb->bi_dbenv_xflags |= DB_TXN_NOSYNC;
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else
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bdb->bi_dbenv_xflags &= ~DB_TXN_NOSYNC;
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break;
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case BDB_INDEX:
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rc = bdb_attr_index_config( bdb, c->fname, c->lineno,
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c->argc - 1, &c->argv[1] );
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if( rc != LDAP_SUCCESS ) return 1;
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break;
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case BDB_LOCKD:
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rc = verb_to_mask( c->argv[1], bdb_lockd );
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if ( BER_BVISNULL(&bdb_lockd[rc].word) ) {
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fprintf( stderr, "%s: "
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"bad policy (%s) in \"lockDetect <policy>\" line\n",
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c->log, c->argv[1] );
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return 1;
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}
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bdb->bi_lock_detect = rc;
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break;
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case BDB_SSTACK:
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if ( c->value_int < MINIMUM_SEARCH_STACK_DEPTH ) {
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fprintf( stderr,
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"%s: depth %d too small, using %d\n",
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c->log, c->value_int, MINIMUM_SEARCH_STACK_DEPTH );
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c->value_int = MINIMUM_SEARCH_STACK_DEPTH;
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}
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bdb->bi_search_stack_depth = c->value_int;
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break;
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}
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return 0;
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}
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int bdb_back_init_cf( BackendInfo *bi )
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{
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int rc;
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bi->bi_cf_table = bdbcfg;
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rc = init_config_attrs( bdbcfg );
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if ( rc ) return rc;
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bdbcfg[0].ad = slap_schema.si_ad_objectClass;
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rc = init_config_ocs( bdbocs );
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return rc;
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}
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