git.sur5r.net Git - openldap/blob - servers/slapd/back-bdb/init.c

   1 /* init.c - initialize bdb backend */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11 #include <ac/string.h>
  12
  13 #include "back-bdb.h"
  14 #include "external.h"
  15
  16 static struct bdbi_database {
  17         char *file;
  18         char *name;
  19         int type;
  20         int flags;
  21 } bdbi_databases[] = {
  22         { "nextid" BDB_SUFFIX, "nextid", DB_BTREE, 0 },
  23         { "dn2entry" BDB_SUFFIX, "dn2entry", DB_BTREE, 0 },
  24         { "id2entry" BDB_SUFFIX, "id2entry", DB_BTREE, 0 },
  25         { NULL, NULL, 0, 0 }
  26 };
  27
  28 #if 0
  29 static int
  30 bdb_destroy( BackendInfo *bi )
  31 {
  32         return 0;
  33 }
  34
  35 static int
  36 bdb_open( BackendInfo *bi )
  37 {
  38         /* initialize the underlying database system */
  39         Debug( LDAP_DEBUG_TRACE, "bdb_open: initialize BDB backend\n",
  40                 0, 0, 0 );
  41
  42         return 0;
  43 }
  44
  45 static int
  46 bdb_close( BackendInfo *bi )
  47 {
  48         /* terminate the underlying database system */
  49         return 0;
  50 }
  51 #endif
  52
  53 static int
  54 bdb_db_init( BackendDB *be )
  55 {
  56         struct bdb_info *bdb;
  57
  58         Debug( LDAP_DEBUG_ANY,
  59                 "bdb_db_init: Initializing BDB database\n",
  60                 0, 0, 0 );
  61
  62         /* allocate backend-database-specific stuff */
  63         bdb = (struct bdb_info *) ch_calloc( 1, sizeof(struct bdb_info) );
  64
  65         /* DBEnv parameters */
  66         bdb->bi_dbenv_home = ch_strdup( BDB_DBENV_HOME );
  67         bdb->bi_dbenv_xflags = 0;
  68         bdb->bi_dbenv_mode = DEFAULT_MODE;
  69
  70 #ifndef NO_THREADS
  71         bdb->bi_lock_detect = DB_LOCK_NORUN;
  72 #endif
  73
  74         be->be_private = bdb;
  75         return 0;
  76 }
  77
  78 #ifndef NO_THREADS
  79 static void *lock_detect_task( void *arg )
  80 {
  81         struct bdb_info *bdb = (struct bdb_info *) arg;
  82
  83         while( bdb->bi_dbenv != NULL ) {
  84                 int rc;
  85                 sleep( bdb->bi_lock_detect_seconds );
  86
  87                 rc = lock_detect( bdb->bi_dbenv, 0,
  88                         bdb->bi_lock_detect, NULL );
  89
  90                 if( rc != 0 ) {
  91                         break;
  92                 }
  93         }
  94
  95         return NULL;
  96 }
  97 #endif
  98
  99 static int
 100 bdb_db_open( BackendDB *be )
 101 {
 102         int rc, i;
 103         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 104         u_int32_t flags;
 105
 106         Debug( LDAP_DEBUG_ARGS,
 107                 "bdb_db_open: %s\n",
 108                 be->be_suffix[0], 0, 0 );
 109
 110         /* we should check existance of dbenv_home and db_directory */
 111
 112         rc = db_env_create( &bdb->bi_dbenv, 0 );
 113         if( rc != 0 ) {
 114                 Debug( LDAP_DEBUG_ANY,
 115                         "bdb_db_open: db_env_create failed: %s (%d)\n",
 116                         db_strerror(rc), rc, 0 );
 117                 return rc;
 118         }
 119
 120         flags = DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_TXN |
 121                 DB_THREAD | DB_CREATE | DB_RECOVER;
 122
 123         bdb->bi_dbenv->set_errpfx( bdb->bi_dbenv, be->be_suffix[0] );
 124         bdb->bi_dbenv->set_errcall( bdb->bi_dbenv, bdb_errcall );
 125
 126 #ifdef BDB_SUBDIRS
 127         {
 128                 char dir[MAXPATHLEN];
 129                 size_t len = strlen( bdb->bi_dbenv_home );
 130
 131                 strcpy( dir, bdb->bi_dbenv_home );
 132                 strcat( &dir[len], BDB_TMP_SUBDIR );
 133
 134                 rc = bdb->bi_dbenv->set_tmp_dir( bdb->bi_dbenv, dir );
 135                 if( rc != 0 ) {
 136                         Debug( LDAP_DEBUG_ANY,
 137                                 "bdb_db_open: set_tmp_dir(%s) failed: %s (%d)\n",
 138                                 dir, db_strerror(rc), rc );
 139                         return rc;
 140                 }
 141
 142                 strcat( &dir[len], BDB_LG_SUBDIR );
 143
 144                 rc = bdb->bi_dbenv->set_lg_dir( bdb->bi_dbenv, dir );
 145                 if( rc != 0 ) {
 146                         Debug( LDAP_DEBUG_ANY,
 147                                 "bdb_db_open: set_lg_dir(%s) failed: %s (%d)\n",
 148                                 dir, db_strerror(rc), rc );
 149                         return rc;
 150                 }
 151
 152                 strcat( &dir[len], BDB_DATA_SUBDIR );
 153
 154                 rc = bdb->bi_dbenv->set_data_dir( bdb->bi_dbenv, dir );
 155                 if( rc != 0 ) {
 156                         Debug( LDAP_DEBUG_ANY,
 157                                 "bdb_db_open: set_data_dir(%s) failed: %s (%d)\n",
 158                                 dir, db_strerror(rc), rc );
 159                         return rc;
 160                 }
 161         }
 162 #endif
 163
 164         Debug( LDAP_DEBUG_TRACE,
 165                 "bdb_db_open: dbenv_open(%s)\n",
 166                 bdb->bi_dbenv_home, 0, 0);
 167
 168         rc = bdb->bi_dbenv->open( bdb->bi_dbenv,
 169                 bdb->bi_dbenv_home,
 170                 flags | bdb->bi_dbenv_xflags,
 171                 bdb->bi_dbenv_mode );
 172         if( rc != 0 ) {
 173                 Debug( LDAP_DEBUG_ANY,
 174                         "bdb_db_open: dbenv_open failed: %s (%d)\n",
 175                         db_strerror(rc), rc, 0 );
 176                 return rc;
 177         }
 178
 179         flags = DB_THREAD | DB_CREATE;
 180
 181         bdb->bi_databases = (struct bdb_db_info **) ch_malloc(
 182                 BDB_INDICES * sizeof(struct bdb_db_info *) );
 183
 184         /* open (and create) main database */
 185         for( i = 0; bdbi_databases[i].name; i++ ) {
 186                 struct bdb_db_info *db;
 187
 188                 db = (struct bdb_db_info *) ch_calloc(1, sizeof(struct bdb_db_info));
 189
 190                 rc = db_create( &db->bdi_db, bdb->bi_dbenv, 0 );
 191                 if( rc != 0 ) {
 192                         Debug( LDAP_DEBUG_ANY,
 193                                 "bdb_db_open: db_create(%s) failed: %s (%d)\n",
 194                                 bdb->bi_dbenv_home, db_strerror(rc), rc );
 195                         return rc;
 196                 }
 197
 198                 rc = db->bdi_db->open( db->bdi_db,
 199                         bdbi_databases[i].file,
 200                         bdbi_databases[i].name,
 201                         bdbi_databases[i].type,
 202                         bdbi_databases[i].flags | flags,
 203                         bdb->bi_dbenv_mode );
 204
 205                 if( rc != 0 ) {
 206                         Debug( LDAP_DEBUG_ANY,
 207                                 "bdb_db_open: db_open(%s) failed: %s (%d)\n",
 208                                 bdb->bi_dbenv_home, db_strerror(rc), rc );
 209                         return rc;
 210                 }
 211
 212                 db->bdi_name = bdbi_databases[i].name;
 213                 bdb->bi_databases[i] = db;
 214         }
 215
 216         bdb->bi_databases[i] = NULL;
 217         bdb->bi_ndatabases = i;
 218
 219         /* get nextid */
 220         rc = bdb_last_id( be, NULL );
 221         if( rc != 0 ) {
 222                 Debug( LDAP_DEBUG_ANY,
 223                         "bdb_db_open: last_id(%s) failed: %s (%d)\n",
 224                         bdb->bi_dbenv_home, db_strerror(rc), rc );
 225                 return rc;
 226         }
 227
 228         /* <insert> open (and create) index databases */
 229
 230 #ifndef NO_THREADS
 231         if( bdb->bi_lock_detect != DB_LOCK_NORUN ) {
 232                 /* listener as a separate THREAD */
 233                 rc = ldap_pvt_thread_create( &bdb->bi_lock_detect_tid,
 234                         1, lock_detect_task, bdb );
 235         }
 236 #endif
 237         return 0;
 238 }
 239
 240 static int
 241 bdb_db_close( BackendDB *be )
 242 {
 243         int rc;
 244         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 245
 246         /* force a checkpoint */
 247         rc = txn_checkpoint( bdb->bi_dbenv, 0, 0, DB_FORCE );
 248         if( rc != 0 ) {
 249                 Debug( LDAP_DEBUG_ANY,
 250                         "bdb_db_destroy: txn_checkpoint failed: %s (%d)\n",
 251                         db_strerror(rc), rc, 0 );
 252                 return rc;
 253         }
 254
 255         while( bdb->bi_ndatabases-- ) {
 256                 rc = bdb->bi_databases[bdb->bi_ndatabases]->bdi_db->close(
 257                         bdb->bi_databases[bdb->bi_ndatabases]->bdi_db, 0 );
 258         }
 259
 260         return 0;
 261 }
 262
 263 static int
 264 bdb_db_destroy( BackendDB *be )
 265 {
 266         int rc;
 267         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 268
 269         /* close db environment */
 270         if( bdb->bi_dbenv ) {
 271                 rc = bdb->bi_dbenv->close( bdb->bi_dbenv, 0 );
 272                 bdb->bi_dbenv = NULL;
 273                 if( rc != 0 ) {
 274                         Debug( LDAP_DEBUG_ANY,
 275                                 "bdb_db_destroy: close failed: %s (%d)\n",
 276                                 db_strerror(rc), rc, 0 );
 277                         return rc;
 278                 }
 279         }
 280
 281         return 0;
 282 }
 283
 284 #ifdef SLAPD_BDB_DYNAMIC
 285 int back_bdb_LTX_init_module( int argc, char *argv[] ) {
 286         BackendInfo bi;
 287
 288         memset( &bi, '\0', sizeof(bi) );
 289         bi.bi_type = "bdb";
 290         bi.bi_init = bdb_initialize;
 291
 292         backend_add( &bi );
 293         return 0;
 294 }
 295 #endif /* SLAPD_BDB_DYNAMIC */
 296
 297 int
 298 bdb_initialize(
 299         BackendInfo     *bi
 300 )
 301 {
 302         static char *controls[] = {
 303                 LDAP_CONTROL_MANAGEDSAIT,
 304                 NULL
 305         };
 306
 307         {       /* version check */
 308                 int major, minor, patch;
 309                 char *version = db_version( &major, &minor, &patch );
 310
 311                 if( major != DB_VERSION_MAJOR ||
 312                         minor != DB_VERSION_MINOR ||
 313                         patch < DB_VERSION_PATCH )
 314                 {
 315                         Debug( LDAP_DEBUG_ANY,
 316                                 "bi_back_initialize: version mismatch\n"
 317                                 "\texpected: " DB_VERSION_STRING "\n"
 318                                 "\tgot: %s \n", version, 0, 0 );
 319                 }
 320
 321                 Debug( LDAP_DEBUG_ANY, "bdb_initialize: %s\n",
 322                         version, 0, 0 );
 323         }
 324
 325 #if 0
 326         db_env_set_func_malloc( ch_malloc );
 327         db_env_set_func_realloc( ch_realloc );
 328         db_env_set_func_free( ch_free );
 329 #endif
 330
 331         db_env_set_func_yield( ldap_pvt_thread_yield );
 332
 333         bi->bi_controls = controls;
 334
 335         bi->bi_open = 0;
 336         bi->bi_close = 0;
 337         bi->bi_config = 0;
 338         bi->bi_destroy = 0;
 339
 340         bi->bi_db_init = bdb_db_init;
 341         bi->bi_db_config = bdb_db_config;
 342         bi->bi_db_open = bdb_db_open;
 343         bi->bi_db_close = bdb_db_close;
 344         bi->bi_db_destroy = bdb_db_destroy;
 345
 346         bi->bi_op_add = bdb_add;
 347         bi->bi_op_bind = bdb_bind;
 348         bi->bi_op_compare = bdb_compare;
 349         bi->bi_op_delete = bdb_delete;
 350         bi->bi_op_modify = bdb_modify;
 351         bi->bi_op_modrdn = bdb_modrdn;
 352         bi->bi_op_search = bdb_search;
 353
 354 #if 0
 355         bi->bi_op_unbind = bdb_unbind;
 356         bi->bi_op_abandon = bdb_abandon;
 357
 358         bi->bi_extended = bdb_extended;
 359
 360         bi->bi_acl_group = bdb_group;
 361         bi->bi_acl_attribute = bdb_attribute;
 362 #endif
 363         bi->bi_chk_referrals = bdb_referrals;
 364
 365         bi->bi_entry_release_rw = 0;
 366
 367         /*
 368          * hooks for slap tools
 369          */
 370         bi->bi_tool_entry_open = bdb_tool_entry_open;
 371         bi->bi_tool_entry_close = bdb_tool_entry_close;
 372         bi->bi_tool_entry_first = bdb_tool_entry_next;
 373         bi->bi_tool_entry_next = bdb_tool_entry_next;
 374         bi->bi_tool_entry_get = bdb_tool_entry_get;
 375         bi->bi_tool_entry_put = bdb_tool_entry_put;
 376 #if BDB_REINDEX
 377         bi->bi_tool_entry_reindex = bdb_tool_entry_reindex;
 378 #else
 379         bi->bi_tool_entry_reindex = 0;
 380 #endif
 381         bi->bi_tool_sync = 0;
 382
 383         bi->bi_connection_init = 0;
 384         bi->bi_connection_destroy = 0;
 385
 386         return 0;
 387 }