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         { "id2entry" BDB_SUFFIX, "id2entry", DB_BTREE, 0 },
  24         { "dn2id" BDB_SUFFIX, "dn2id", 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         ldap_pvt_thread_mutex_init( &bdb->bi_database_mutex );
  75
  76         be->be_private = bdb;
  77         return 0;
  78 }
  79
  80 #ifndef NO_THREADS
  81 static void *lock_detect_task( void *arg )
  82 {
  83         struct bdb_info *bdb = (struct bdb_info *) arg;
  84
  85         while( bdb->bi_dbenv != NULL ) {
  86                 int rc;
  87                 sleep( bdb->bi_lock_detect_seconds );
  88
  89                 rc = lock_detect( bdb->bi_dbenv, 0,
  90                         bdb->bi_lock_detect, NULL );
  91
  92                 if( rc != 0 ) {
  93                         break;
  94                 }
  95         }
  96
  97         return NULL;
  98 }
  99 #endif
 100
 101 static int
 102 bdb_db_open( BackendDB *be )
 103 {
 104         int rc, i;
 105         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 106         u_int32_t flags;
 107
 108         Debug( LDAP_DEBUG_ARGS,
 109                 "bdb_db_open: %s\n",
 110                 be->be_suffix[0], 0, 0 );
 111
 112         /* we should check existance of dbenv_home and db_directory */
 113
 114         rc = db_env_create( &bdb->bi_dbenv, 0 );
 115         if( rc != 0 ) {
 116                 Debug( LDAP_DEBUG_ANY,
 117                         "bdb_db_open: db_env_create failed: %s (%d)\n",
 118                         db_strerror(rc), rc, 0 );
 119                 return rc;
 120         }
 121
 122         flags = DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_TXN |
 123                 DB_THREAD | DB_CREATE | DB_RECOVER;
 124
 125         bdb->bi_dbenv->set_errpfx( bdb->bi_dbenv, be->be_suffix[0] );
 126         bdb->bi_dbenv->set_errcall( bdb->bi_dbenv, bdb_errcall );
 127
 128 #ifdef BDB_SUBDIRS
 129         {
 130                 char dir[MAXPATHLEN];
 131                 size_t len = strlen( bdb->bi_dbenv_home );
 132
 133                 strcpy( dir, bdb->bi_dbenv_home );
 134                 strcat( &dir[len], BDB_TMP_SUBDIR );
 135
 136                 rc = bdb->bi_dbenv->set_tmp_dir( bdb->bi_dbenv, dir );
 137                 if( rc != 0 ) {
 138                         Debug( LDAP_DEBUG_ANY,
 139                                 "bdb_db_open: set_tmp_dir(%s) failed: %s (%d)\n",
 140                                 dir, db_strerror(rc), rc );
 141                         return rc;
 142                 }
 143
 144                 strcat( &dir[len], BDB_LG_SUBDIR );
 145
 146                 rc = bdb->bi_dbenv->set_lg_dir( bdb->bi_dbenv, dir );
 147                 if( rc != 0 ) {
 148                         Debug( LDAP_DEBUG_ANY,
 149                                 "bdb_db_open: set_lg_dir(%s) failed: %s (%d)\n",
 150                                 dir, db_strerror(rc), rc );
 151                         return rc;
 152                 }
 153
 154                 strcat( &dir[len], BDB_DATA_SUBDIR );
 155
 156                 rc = bdb->bi_dbenv->set_data_dir( bdb->bi_dbenv, dir );
 157                 if( rc != 0 ) {
 158                         Debug( LDAP_DEBUG_ANY,
 159                                 "bdb_db_open: set_data_dir(%s) failed: %s (%d)\n",
 160                                 dir, db_strerror(rc), rc );
 161                         return rc;
 162                 }
 163         }
 164 #endif
 165
 166         Debug( LDAP_DEBUG_TRACE,
 167                 "bdb_db_open: dbenv_open(%s)\n",
 168                 bdb->bi_dbenv_home, 0, 0);
 169
 170         rc = bdb->bi_dbenv->open( bdb->bi_dbenv,
 171                 bdb->bi_dbenv_home,
 172                 flags,
 173                 bdb->bi_dbenv_mode );
 174         if( rc != 0 ) {
 175                 Debug( LDAP_DEBUG_ANY,
 176                         "bdb_db_open: dbenv_open failed: %s (%d)\n",
 177                         db_strerror(rc), rc, 0 );
 178                 return rc;
 179         }
 180
 181         if( bdb->bi_dbenv_xflags != 0 ) {
 182                 rc = bdb->bi_dbenv->set_flags( bdb->bi_dbenv,
 183                         bdb->bi_dbenv_xflags, 1);
 184                 if( rc != 0 ) {
 185                         Debug( LDAP_DEBUG_ANY,
 186                             "bdb_db_open: dbenv_set_flags failed: %s (%d)\n",
 187                             db_strerror(rc), rc, 0 );
 188                         return rc;
 189                 }
 190         }
 191
 192         flags = DB_THREAD | DB_CREATE;
 193
 194         bdb->bi_databases = (struct bdb_db_info **) ch_malloc(
 195                 BDB_INDICES * sizeof(struct bdb_db_info *) );
 196
 197         /* open (and create) main database */
 198         for( i = 0; bdbi_databases[i].name; i++ ) {
 199                 struct bdb_db_info *db;
 200
 201                 db = (struct bdb_db_info *) ch_calloc(1, sizeof(struct bdb_db_info));
 202
 203                 rc = db_create( &db->bdi_db, bdb->bi_dbenv, 0 );
 204                 if( rc != 0 ) {
 205                         Debug( LDAP_DEBUG_ANY,
 206                                 "bdb_db_open: db_create(%s) failed: %s (%d)\n",
 207                                 bdb->bi_dbenv_home, db_strerror(rc), rc );
 208                         return rc;
 209                 }
 210
 211                 rc = db->bdi_db->open( db->bdi_db,
 212                         bdbi_databases[i].file,
 213                         bdbi_databases[i].name,
 214                         bdbi_databases[i].type,
 215                         bdbi_databases[i].flags | flags,
 216                         bdb->bi_dbenv_mode );
 217
 218                 if( rc != 0 ) {
 219                         Debug( LDAP_DEBUG_ANY,
 220                                 "bdb_db_open: db_open(%s) failed: %s (%d)\n",
 221                                 bdb->bi_dbenv_home, db_strerror(rc), rc );
 222                         return rc;
 223                 }
 224
 225                 db->bdi_name = bdbi_databases[i].name;
 226                 bdb->bi_databases[i] = db;
 227         }
 228
 229         bdb->bi_databases[i] = NULL;
 230         bdb->bi_ndatabases = i;
 231
 232         /* get nextid */
 233         rc = bdb_last_id( be, NULL );
 234         if( rc != 0 ) {
 235                 Debug( LDAP_DEBUG_ANY,
 236                         "bdb_db_open: last_id(%s) failed: %s (%d)\n",
 237                         bdb->bi_dbenv_home, db_strerror(rc), rc );
 238                 return rc;
 239         }
 240
 241         /* <insert> open (and create) index databases */
 242
 243 #ifndef NO_THREADS
 244         if( bdb->bi_lock_detect != DB_LOCK_NORUN ) {
 245                 /* listener as a separate THREAD */
 246                 rc = ldap_pvt_thread_create( &bdb->bi_lock_detect_tid,
 247                         1, lock_detect_task, bdb );
 248         }
 249 #endif
 250         return 0;
 251 }
 252
 253 static int
 254 bdb_db_close( BackendDB *be )
 255 {
 256         int rc;
 257         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 258
 259         /* force a checkpoint */
 260         rc = txn_checkpoint( bdb->bi_dbenv, 0, 0, DB_FORCE );
 261         if( rc != 0 ) {
 262                 Debug( LDAP_DEBUG_ANY,
 263                         "bdb_db_destroy: txn_checkpoint failed: %s (%d)\n",
 264                         db_strerror(rc), rc, 0 );
 265                 return rc;
 266         }
 267
 268         while( bdb->bi_ndatabases-- ) {
 269                 rc = bdb->bi_databases[bdb->bi_ndatabases]->bdi_db->close(
 270                         bdb->bi_databases[bdb->bi_ndatabases]->bdi_db, 0 );
 271         }
 272
 273         return 0;
 274 }
 275
 276 static int
 277 bdb_db_destroy( BackendDB *be )
 278 {
 279         int rc;
 280         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 281
 282         /* close db environment */
 283         if( bdb->bi_dbenv ) {
 284                 rc = bdb->bi_dbenv->close( bdb->bi_dbenv, 0 );
 285                 bdb->bi_dbenv = NULL;
 286                 if( rc != 0 ) {
 287                         Debug( LDAP_DEBUG_ANY,
 288                                 "bdb_db_destroy: close failed: %s (%d)\n",
 289                                 db_strerror(rc), rc, 0 );
 290                         return rc;
 291                 }
 292         }
 293
 294         return 0;
 295 }
 296
 297 #ifdef SLAPD_BDB_DYNAMIC
 298 int back_bdb_LTX_init_module( int argc, char *argv[] ) {
 299         BackendInfo bi;
 300
 301         memset( &bi, '\0', sizeof(bi) );
 302         bi.bi_type = "bdb";
 303         bi.bi_init = bdb_initialize;
 304
 305         backend_add( &bi );
 306         return 0;
 307 }
 308 #endif /* SLAPD_BDB_DYNAMIC */
 309
 310 int
 311 bdb_initialize(
 312         BackendInfo     *bi
 313 )
 314 {
 315         static char *controls[] = {
 316                 LDAP_CONTROL_MANAGEDSAIT,
 317                 NULL
 318         };
 319
 320         {       /* version check */
 321                 int major, minor, patch;
 322                 char *version = db_version( &major, &minor, &patch );
 323
 324                 if( major != DB_VERSION_MAJOR ||
 325                         minor != DB_VERSION_MINOR ||
 326                         patch < DB_VERSION_PATCH )
 327                 {
 328                         Debug( LDAP_DEBUG_ANY,
 329                                 "bi_back_initialize: version mismatch\n"
 330                                 "\texpected: " DB_VERSION_STRING "\n"
 331                                 "\tgot: %s \n", version, 0, 0 );
 332                 }
 333
 334                 Debug( LDAP_DEBUG_ANY, "bdb_initialize: %s\n",
 335                         version, 0, 0 );
 336         }
 337
 338 #if 0
 339         db_env_set_func_malloc( ch_malloc );
 340         db_env_set_func_realloc( ch_realloc );
 341         db_env_set_func_free( ch_free );
 342 #endif
 343
 344         db_env_set_func_yield( ldap_pvt_thread_yield );
 345
 346         bi->bi_controls = controls;
 347
 348         bi->bi_open = 0;
 349         bi->bi_close = 0;
 350         bi->bi_config = 0;
 351         bi->bi_destroy = 0;
 352
 353         bi->bi_db_init = bdb_db_init;
 354         bi->bi_db_config = bdb_db_config;
 355         bi->bi_db_open = bdb_db_open;
 356         bi->bi_db_close = bdb_db_close;
 357         bi->bi_db_destroy = bdb_db_destroy;
 358
 359         bi->bi_op_add = bdb_add;
 360         bi->bi_op_bind = bdb_bind;
 361         bi->bi_op_compare = bdb_compare;
 362         bi->bi_op_delete = bdb_delete;
 363         bi->bi_op_modify = bdb_modify;
 364         bi->bi_op_modrdn = bdb_modrdn;
 365         bi->bi_op_search = bdb_search;
 366
 367 #if 0
 368         bi->bi_op_unbind = bdb_unbind;
 369         bi->bi_op_abandon = bdb_abandon;
 370
 371         bi->bi_extended = bdb_extended;
 372 #endif
 373         bi->bi_acl_group = bdb_group;
 374         bi->bi_acl_attribute = bdb_attribute;
 375         bi->bi_chk_referrals = bdb_referrals;
 376
 377         bi->bi_entry_release_rw = 0;
 378
 379         /*
 380          * hooks for slap tools
 381          */
 382         bi->bi_tool_entry_open = bdb_tool_entry_open;
 383         bi->bi_tool_entry_close = bdb_tool_entry_close;
 384         bi->bi_tool_entry_first = bdb_tool_entry_next;
 385         bi->bi_tool_entry_next = bdb_tool_entry_next;
 386         bi->bi_tool_entry_get = bdb_tool_entry_get;
 387         bi->bi_tool_entry_put = bdb_tool_entry_put;
 388         bi->bi_tool_entry_reindex = bdb_tool_entry_reindex;
 389         bi->bi_tool_sync = 0;
 390
 391         bi->bi_connection_init = 0;
 392         bi->bi_connection_destroy = 0;
 393
 394         return 0;
 395 }