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https://git.openldap.org/openldap/openldap.git
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483 lines
10 KiB
C
483 lines
10 KiB
C
/* init.c - initialize bdb backend */
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/* $OpenLDAP$ */
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/*
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* Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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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 <ac/unistd.h>
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#include <ac/stdlib.h>
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#include "back-bdb.h"
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#include "external.h"
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static struct bdbi_database {
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char *file;
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char *name;
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int type;
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int flags;
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} bdbi_databases[] = {
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{ "id2entry" BDB_SUFFIX, "id2entry", DB_BTREE, 0 },
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#ifdef BDB_HIER
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{ "id2parent" BDB_SUFFIX, "id2parent", DB_BTREE, 0 },
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#else
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{ "dn2id" BDB_SUFFIX, "dn2id", DB_BTREE, 0 },
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#endif
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{ NULL, NULL, 0, 0 }
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};
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#if 0
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static int
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bdb_destroy( BackendInfo *bi )
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{
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return 0;
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}
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static int
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bdb_open( BackendInfo *bi )
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{
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/* initialize the underlying database system */
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Debug( LDAP_DEBUG_TRACE, "bdb_open: initialize BDB backend\n",
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0, 0, 0 );
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return 0;
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}
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static int
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bdb_close( BackendInfo *bi )
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{
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/* terminate the underlying database system */
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return 0;
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}
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#endif
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static int
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bdb_db_init( BackendDB *be )
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{
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struct bdb_info *bdb;
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Debug( LDAP_DEBUG_ANY,
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"bdb_db_init: Initializing BDB database\n",
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0, 0, 0 );
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/* indicate system schema supported */
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be->be_flags |= SLAP_BFLAG_ALIASES
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| SLAP_BFLAG_REFERRALS
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| SLAP_BFLAG_SUBENTRIES;
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/* allocate backend-database-specific stuff */
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bdb = (struct bdb_info *) ch_calloc( 1, sizeof(struct bdb_info) );
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/* DBEnv parameters */
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bdb->bi_dbenv_home = ch_strdup( BDB_DBENV_HOME );
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bdb->bi_dbenv_xflags = 0;
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bdb->bi_dbenv_mode = DEFAULT_MODE;
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bdb->bi_txn = 1; /* default to using transactions */
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#ifndef NO_THREADS
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bdb->bi_lock_detect = DB_LOCK_NORUN;
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#endif
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ldap_pvt_thread_mutex_init( &bdb->bi_database_mutex );
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ldap_pvt_thread_mutex_init( &bdb->bi_lastid_mutex );
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#ifdef BDB_HIER
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ldap_pvt_thread_rdwr_init( &bdb->bi_tree_rdwr );
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#endif
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be->be_private = bdb;
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return 0;
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}
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#ifndef NO_THREADS
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static void *lock_detect_task( void *arg )
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{
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struct bdb_info *bdb = (struct bdb_info *) arg;
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while( bdb->bi_dbenv != NULL ) {
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int rc;
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sleep( bdb->bi_lock_detect_seconds );
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rc = LOCK_DETECT( bdb->bi_dbenv, 0,
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bdb->bi_lock_detect, NULL );
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if( rc != 0 ) {
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break;
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}
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}
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return NULL;
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}
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#endif
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int
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bdb_bt_compare(
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DB *db,
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const DBT *usrkey,
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const DBT *curkey
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)
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{
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unsigned char *u, *c;
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int i;
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u = usrkey->data;
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c = curkey->data;
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#ifdef WORDS_BIGENDIAN
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for( i = 0; i < sizeof(ID); i++)
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#else
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for( i = sizeof(ID)-1; i >= 0; i--)
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#endif
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{
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if( u[i] - c[i] )
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return u[i] - c[i];
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}
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return 0;
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}
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static int
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bdb_db_open( BackendDB *be )
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{
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int rc, i;
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struct bdb_info *bdb = (struct bdb_info *) be->be_private;
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u_int32_t flags;
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Debug( LDAP_DEBUG_ARGS,
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"bdb_db_open: %s\n",
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be->be_suffix[0]->bv_val, 0, 0 );
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/* we should check existance of dbenv_home and db_directory */
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rc = db_env_create( &bdb->bi_dbenv, 0 );
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if( rc != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"bdb_db_open: db_env_create failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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return rc;
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}
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flags = DB_INIT_MPOOL | DB_THREAD | DB_CREATE;
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if( bdb->bi_txn ) {
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flags |= DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN | DB_RECOVER;
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} else {
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flags |= DB_INIT_CDB;
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bdb->bi_txn_cp = 0;
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}
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bdb->bi_dbenv->set_errpfx( bdb->bi_dbenv, be->be_suffix[0]->bv_val );
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bdb->bi_dbenv->set_errcall( bdb->bi_dbenv, bdb_errcall );
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#ifdef BDB_SUBDIRS
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{
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char dir[MAXPATHLEN];
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size_t len = strlen( bdb->bi_dbenv_home );
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strcpy( dir, bdb->bi_dbenv_home );
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strcat( &dir[len], BDB_TMP_SUBDIR );
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rc = bdb->bi_dbenv->set_tmp_dir( bdb->bi_dbenv, dir );
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if( rc != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"bdb_db_open: set_tmp_dir(%s) failed: %s (%d)\n",
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dir, db_strerror(rc), rc );
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return rc;
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}
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strcat( &dir[len], BDB_LG_SUBDIR );
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rc = bdb->bi_dbenv->set_lg_dir( bdb->bi_dbenv, dir );
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if( rc != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"bdb_db_open: set_lg_dir(%s) failed: %s (%d)\n",
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dir, db_strerror(rc), rc );
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return rc;
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}
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strcat( &dir[len], BDB_DATA_SUBDIR );
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rc = bdb->bi_dbenv->set_data_dir( bdb->bi_dbenv, dir );
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if( rc != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"bdb_db_open: set_data_dir(%s) failed: %s (%d)\n",
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dir, db_strerror(rc), rc );
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return rc;
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}
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}
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#endif
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Debug( LDAP_DEBUG_TRACE,
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"bdb_db_open: dbenv_open(%s)\n",
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bdb->bi_dbenv_home, 0, 0);
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rc = bdb->bi_dbenv->open( bdb->bi_dbenv,
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bdb->bi_dbenv_home,
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flags,
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bdb->bi_dbenv_mode );
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if( rc != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"bdb_db_open: dbenv_open failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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return rc;
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}
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if( bdb->bi_dbenv_xflags != 0 ) {
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rc = bdb->bi_dbenv->set_flags( bdb->bi_dbenv,
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bdb->bi_dbenv_xflags, 1);
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if( rc != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"bdb_db_open: dbenv_set_flags failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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return rc;
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}
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}
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flags = DB_THREAD | DB_CREATE | bdb->bi_db_opflags;
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bdb->bi_databases = (struct bdb_db_info **) ch_malloc(
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BDB_INDICES * sizeof(struct bdb_db_info *) );
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/* open (and create) main database */
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for( i = 0; bdbi_databases[i].name; i++ ) {
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struct bdb_db_info *db;
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db = (struct bdb_db_info *) ch_calloc(1, sizeof(struct bdb_db_info));
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rc = db_create( &db->bdi_db, bdb->bi_dbenv, 0 );
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if( rc != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"bdb_db_open: db_create(%s) failed: %s (%d)\n",
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bdb->bi_dbenv_home, db_strerror(rc), rc );
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return rc;
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}
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if( i == BDB_ID2ENTRY ) {
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rc = db->bdi_db->set_bt_compare( db->bdi_db,
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bdb_bt_compare );
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rc = db->bdi_db->set_pagesize( db->bdi_db,
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BDB_ID2ENTRY_PAGESIZE );
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} else {
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#ifdef BDB_HIER
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rc = db->bdi_db->set_bt_compare( db->bdi_db,
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bdb_bt_compare );
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#elif defined(BDB_IDL_MULTI)
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rc = db->bdi_db->set_flags( db->bdi_db,
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DB_DUP | DB_DUPSORT );
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rc = db->bdi_db->set_dup_compare( db->bdi_db,
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bdb_bt_compare );
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#endif
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rc = db->bdi_db->set_pagesize( db->bdi_db,
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BDB_PAGESIZE );
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}
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rc = db->bdi_db->open( db->bdi_db,
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bdbi_databases[i].file,
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/* bdbi_databases[i].name, */ NULL,
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bdbi_databases[i].type,
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bdbi_databases[i].flags | flags,
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bdb->bi_dbenv_mode );
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if( rc != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"bdb_db_open: db_open(%s) failed: %s (%d)\n",
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bdb->bi_dbenv_home, db_strerror(rc), rc );
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return rc;
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}
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db->bdi_name = bdbi_databases[i].name;
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bdb->bi_databases[i] = db;
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}
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bdb->bi_databases[i] = NULL;
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bdb->bi_ndatabases = i;
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/* get nextid */
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rc = bdb_last_id( be, NULL );
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if( rc != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"bdb_db_open: last_id(%s) failed: %s (%d)\n",
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bdb->bi_dbenv_home, db_strerror(rc), rc );
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return rc;
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}
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/* <insert> open (and create) index databases */
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#ifdef BDB_HIER
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rc = bdb_build_tree( be );
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#endif
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#ifndef NO_THREADS
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if( bdb->bi_lock_detect != DB_LOCK_NORUN ) {
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/* listener as a separate THREAD */
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rc = ldap_pvt_thread_create( &bdb->bi_lock_detect_tid,
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1, lock_detect_task, bdb );
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}
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#endif
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return 0;
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}
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static int
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bdb_db_close( BackendDB *be )
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{
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int rc;
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struct bdb_info *bdb = (struct bdb_info *) be->be_private;
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struct bdb_db_info *db;
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while( bdb->bi_ndatabases-- ) {
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db = bdb->bi_databases[bdb->bi_ndatabases];
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rc = db->bdi_db->close( db->bdi_db, 0 );
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/* Lower numbered names are not strdup'd */
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if( bdb->bi_ndatabases >= BDB_NDB )
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free( db->bdi_name );
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free( db );
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}
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free( bdb->bi_databases );
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bdb_attr_index_destroy( bdb->bi_attrs );
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return 0;
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}
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static int
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bdb_db_destroy( BackendDB *be )
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{
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int rc;
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struct bdb_info *bdb = (struct bdb_info *) be->be_private;
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/* close db environment */
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if( bdb->bi_dbenv ) {
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/* force a checkpoint */
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if( bdb->bi_txn ) {
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rc = TXN_CHECKPOINT( bdb->bi_dbenv, 0, 0, DB_FORCE );
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if( rc != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"bdb_db_destroy: txn_checkpoint failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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}
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}
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rc = bdb->bi_dbenv->close( bdb->bi_dbenv, 0 );
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bdb->bi_dbenv = NULL;
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if( rc != 0 ) {
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Debug( LDAP_DEBUG_ANY,
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"bdb_db_destroy: close failed: %s (%d)\n",
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db_strerror(rc), rc, 0 );
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return rc;
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}
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}
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return 0;
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}
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#ifdef SLAPD_BDB_DYNAMIC
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int back_bdb_LTX_init_module( int argc, char *argv[] ) {
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BackendInfo bi;
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memset( &bi, '\0', sizeof(bi) );
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bi.bi_type = "bdb";
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bi.bi_init = bdb_initialize;
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backend_add( &bi );
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return 0;
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}
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#endif /* SLAPD_BDB_DYNAMIC */
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int
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bdb_initialize(
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BackendInfo *bi
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)
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{
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static char *controls[] = {
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LDAP_CONTROL_MANAGEDSAIT,
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LDAP_CONTROL_SUBENTRIES,
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NULL
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};
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{ /* version check */
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int major, minor, patch;
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char *version = db_version( &major, &minor, &patch );
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if( major != DB_VERSION_MAJOR ||
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minor != DB_VERSION_MINOR ||
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patch < DB_VERSION_PATCH )
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{
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Debug( LDAP_DEBUG_ANY,
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"bi_back_initialize: version mismatch\n"
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"\texpected: " DB_VERSION_STRING "\n"
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"\tgot: %s \n", version, 0, 0 );
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}
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Debug( LDAP_DEBUG_ANY, "bdb_initialize: %s\n",
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version, 0, 0 );
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}
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#if 0
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db_env_set_func_malloc( ch_malloc );
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db_env_set_func_realloc( ch_realloc );
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db_env_set_func_free( ch_free );
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#endif
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db_env_set_func_yield( ldap_pvt_thread_yield );
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bi->bi_controls = controls;
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bi->bi_open = 0;
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bi->bi_close = 0;
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bi->bi_config = 0;
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bi->bi_destroy = 0;
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bi->bi_db_init = bdb_db_init;
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bi->bi_db_config = bdb_db_config;
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bi->bi_db_open = bdb_db_open;
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bi->bi_db_close = bdb_db_close;
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bi->bi_db_destroy = bdb_db_destroy;
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bi->bi_op_add = bdb_add;
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bi->bi_op_bind = bdb_bind;
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bi->bi_op_compare = bdb_compare;
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bi->bi_op_delete = bdb_delete;
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bi->bi_op_modify = bdb_modify;
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bi->bi_op_modrdn = bdb_modrdn;
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bi->bi_op_search = bdb_search;
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bi->bi_op_unbind = 0;
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bi->bi_op_abandon = 0;
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bi->bi_extended = bdb_extended;
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#if 0
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/*
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* these routines (and their callers) are not yet designed
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* to work with transaction. Using them may cause deadlock.
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*/
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bi->bi_acl_group = bdb_group;
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bi->bi_acl_attribute = bdb_attribute;
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#else
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bi->bi_acl_group = 0;
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bi->bi_acl_attribute = 0;
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#endif
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bi->bi_chk_referrals = bdb_referrals;
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bi->bi_entry_release_rw = bdb_entry_release;
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/*
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* hooks for slap tools
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*/
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bi->bi_tool_entry_open = bdb_tool_entry_open;
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bi->bi_tool_entry_close = bdb_tool_entry_close;
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bi->bi_tool_entry_first = bdb_tool_entry_next;
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bi->bi_tool_entry_next = bdb_tool_entry_next;
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bi->bi_tool_entry_get = bdb_tool_entry_get;
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bi->bi_tool_entry_put = bdb_tool_entry_put;
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bi->bi_tool_entry_reindex = bdb_tool_entry_reindex;
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bi->bi_tool_sync = 0;
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bi->bi_connection_init = 0;
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bi->bi_connection_destroy = 0;
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return 0;
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}
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