1 /* dbcache.c - manage cache of open databases */
4 * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
5 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
13 #include <ac/socket.h>
14 #include <ac/string.h>
20 #include "lutil_hash.h"
22 /* Pass-thru hash function. Since the indexer is already giving us hash
23 * values as keys, we don't need BDB to re-hash them.
33 unsigned char *dst = (unsigned char *)&ret;
34 const unsigned char *src = (const unsigned char *)bytes;
36 if ( length > sizeof(u_int32_t) )
37 length = sizeof(u_int32_t);
56 struct bdb_info *bdb = (struct bdb_info *) be->be_private;
57 struct bdb_db_info *db;
62 for( i=BDB_NDB; bdb->bi_databases[i]; i++ ) {
63 if( !strcmp( bdb->bi_databases[i]->bdi_name, name) ) {
64 *dbout = bdb->bi_databases[i]->bdi_db;
69 ldap_pvt_thread_mutex_lock( &bdb->bi_database_mutex );
71 /* check again! may have been added by another thread */
72 for( i=BDB_NDB; bdb->bi_databases[i]; i++ ) {
73 if( !strcmp( bdb->bi_databases[i]->bdi_name, name) ) {
74 *dbout = bdb->bi_databases[i]->bdi_db;
75 ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
80 if( i >= BDB_INDICES ) {
81 ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
85 db = (struct bdb_db_info *) ch_calloc(1, sizeof(struct bdb_db_info));
87 db->bdi_name = ch_strdup( name );
89 rc = db_create( &db->bdi_db, bdb->bi_dbenv, 0 );
92 LDAP_LOG ( CACHE, ERR,
93 "bdb_db_cache: db_create(%s) failed: %s (%d)\n",
94 bdb->bi_dbenv_home, db_strerror(rc), rc );
96 Debug( LDAP_DEBUG_ANY,
97 "bdb_db_cache: db_create(%s) failed: %s (%d)\n",
98 bdb->bi_dbenv_home, db_strerror(rc), rc );
100 ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
104 rc = db->bdi_db->set_pagesize( db->bdi_db, BDB_PAGESIZE );
105 rc = db->bdi_db->set_h_hash( db->bdi_db, bdb_db_hash );
106 rc = db->bdi_db->set_flags( db->bdi_db, DB_DUP | DB_DUPSORT );
107 rc = db->bdi_db->set_dup_compare( db->bdi_db, bdb_bt_compare );
109 file = ch_malloc( strlen( name ) + sizeof(BDB_SUFFIX) );
110 sprintf( file, "%s" BDB_SUFFIX, name );
115 flags = bdb->bi_db_opflags | DB_CREATE | DB_THREAD;
116 if ( !tid ) flags |= DB_AUTO_COMMIT;
117 rc = DB_OPEN( db->bdi_db, tid,
120 bdb->bi_dbenv_mode );
126 LDAP_LOG ( CACHE, ERR,
127 "bdb_db_cache: db_open(%s) failed: %s (%d)\n",
128 name, db_strerror(rc), rc );
130 Debug( LDAP_DEBUG_ANY,
131 "bdb_db_cache: db_open(%s) failed: %s (%d)\n",
132 name, db_strerror(rc), rc );
134 ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
138 bdb->bi_databases[i+1] = NULL;
139 bdb->bi_databases[i] = db;
140 bdb->bi_ndatabases = i+1;
144 ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );