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