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