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         bdb->bi_lock_detect = DB_LOCK_NORUN;
  70
  71         be->be_private = bdb;
  72         return 0;
  73 }
  74
  75 #ifndef NO_THREADS
  76 static void *lock_detect_task( void *arg )
  77 {
  78         struct bdb_info *bdb = (struct bdb_info *) arg;
  79
  80         while( bdb->bi_dbenv != NULL ) {
  81                 int rc;
  82                 sleep( bdb->bi_lock_detect_seconds );
  83
  84                 rc = lock_detect( bdb->bi_dbenv, DB_LOCK_CONFLICT, bdb->bi_lock_detect, NULL );
  85                 if( rc != 0 ) {
  86                         break;
  87                 }
  88         }
  89
  90         return NULL;
  91 }
  92 #endif
  93
  94 static int
  95 bdb_db_open( BackendDB *be )
  96 {
  97         int rc, i;
  98         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
  99         u_int32_t flags;
 100
 101         Debug( LDAP_DEBUG_ARGS,
 102                 "bdb_db_open: %s\n",
 103                 be->be_suffix[0], 0, 0 );
 104
 105         /* we should check existance of dbenv_home and db_directory */
 106
 107         rc = db_env_create( &bdb->bi_dbenv, 0 );
 108         if( rc != 0 ) {
 109                 Debug( LDAP_DEBUG_ANY,
 110                         "bdb_db_open: db_env_create failed: %s (%d)\n",
 111                         db_strerror(rc), rc, 0 );
 112                 return rc;
 113         }
 114
 115         flags = DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_MPOOL | DB_INIT_TXN |
 116                 DB_CREATE | DB_RECOVER;
 117
 118 #ifndef NO_THREADS
 119         flags |= DB_THREAD;
 120 #endif
 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         /* <insert> open (and create) index databases */
 215
 216
 217 #ifndef NO_THREADS
 218         if( bdb->bi_lock_detect != DB_LOCK_NORUN ) {
 219                 /* listener as a separate THREAD */
 220                 rc = ldap_pvt_thread_create( &bdb->bi_lock_detect_tid,
 221                         1, lock_detect_task, bdb );
 222         }
 223 #endif
 224         return 0;
 225 }
 226
 227 static int
 228 bdb_db_close( BackendDB *be )
 229 {
 230         int rc;
 231         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 232
 233         /* force a checkpoint */
 234         rc = txn_checkpoint( bdb->bi_dbenv, 0, 0, DB_FORCE );
 235         if( rc != 0 ) {
 236                 Debug( LDAP_DEBUG_ANY,
 237                         "bdb_db_destroy: txn_checkpoint failed: %s (%d)\n",
 238                         db_strerror(rc), rc, 0 );
 239                 return rc;
 240         }
 241
 242         while( bdb->bi_ndatabases-- ) {
 243                 rc = bdb->bi_databases[bdb->bi_ndatabases]->bdi_db->close(
 244                         bdb->bi_databases[bdb->bi_ndatabases]->bdi_db, 0 );
 245         }
 246
 247         return 0;
 248 }
 249
 250 static int
 251 bdb_db_destroy( BackendDB *be )
 252 {
 253         int rc;
 254         struct bdb_info *bdb = (struct bdb_info *) be->be_private;
 255
 256         /* close db environment */
 257         rc = bdb->bi_dbenv->close( bdb->bi_dbenv, 0 );
 258         bdb->bi_dbenv = NULL;
 259         if( rc != 0 ) {
 260                 Debug( LDAP_DEBUG_ANY,
 261                         "bdb_db_destroy: close failed: %s (%d)\n",
 262                         db_strerror(rc), rc, 0 );
 263                 return rc;
 264         }
 265
 266         return 0;
 267 }
 268
 269 #ifdef SLAPD_BDB_DYNAMIC
 270 int back_bdb_LTX_init_module( int argc, char *argv[] ) {
 271         BackendInfo bi;
 272
 273         memset( &bi, '\0', sizeof(bi) );
 274         bi.bi_type = "bdb";
 275         bi.bi_init = bdb_initialize;
 276
 277         backend_add( &bi );
 278         return 0;
 279 }
 280 #endif /* SLAPD_BDB_DYNAMIC */
 281
 282 int
 283 bdb_initialize(
 284         BackendInfo     *bi
 285 )
 286 {
 287         static char *controls[] = {
 288                 LDAP_CONTROL_MANAGEDSAIT,
 289                 NULL
 290         };
 291
 292         {       /* version check */
 293                 int major, minor, patch;
 294                 char *version = db_version( &major, &minor, &patch );
 295
 296                 if( major != DB_VERSION_MAJOR ||
 297                         minor != DB_VERSION_MINOR ||
 298                         patch < DB_VERSION_PATCH )
 299                 {
 300                         Debug( LDAP_DEBUG_ANY,
 301                                 "bi_back_initialize: version mismatch\n"
 302                                 "\texpected: " DB_VERSION_STRING "\n"
 303                                 "\tgot: %s \n", version, 0, 0 );
 304                 }
 305
 306                 Debug( LDAP_DEBUG_ANY, "bdb_initialize: %s\n",
 307                         version, 0, 0 );
 308         }
 309
 310 #if 0
 311         db_env_set_func_malloc( ch_malloc );
 312         db_env_set_func_realloc( ch_realloc );
 313         db_env_set_func_free( ch_free );
 314 #endif
 315         db_env_set_func_yield( ldap_pvt_thread_yield );
 316
 317         bi->bi_controls = controls;
 318
 319         bi->bi_open = 0;
 320         bi->bi_close = 0;
 321         bi->bi_config = 0;
 322         bi->bi_destroy = 0;
 323
 324         bi->bi_db_init = bdb_db_init;
 325         bi->bi_db_config = bdb_db_config;
 326         bi->bi_db_open = bdb_db_open;
 327         bi->bi_db_close = bdb_db_close;
 328         bi->bi_db_destroy = bdb_db_destroy;
 329
 330         bi->bi_op_add = bdb_add;
 331         bi->bi_op_bind = bdb_bind;
 332         bi->bi_op_compare = bdb_compare;
 333         bi->bi_op_delete = bdb_delete;
 334         bi->bi_op_modify = bdb_modify;
 335         bi->bi_op_modrdn = bdb_modrdn;
 336         bi->bi_op_search = bdb_search;
 337
 338 #if 0
 339         bi->bi_op_unbind = bdb_unbind;
 340         bi->bi_op_abandon = bdb_abandon;
 341
 342         bi->bi_extended = bdb_extended;
 343
 344         bi->bi_acl_group = bdb_group;
 345         bi->bi_acl_attribute = bdb_attribute;
 346 #endif
 347         bi->bi_chk_referrals = bdb_referrals;
 348
 349         bi->bi_entry_release_rw = 0;
 350
 351         /*
 352          * hooks for slap tools
 353          */
 354         bi->bi_tool_entry_open = bdb_tool_entry_open;
 355         bi->bi_tool_entry_close = bdb_tool_entry_close;
 356         bi->bi_tool_entry_first = bdb_tool_entry_next;
 357         bi->bi_tool_entry_next = bdb_tool_entry_next;
 358         bi->bi_tool_entry_get = bdb_tool_entry_get;
 359         bi->bi_tool_entry_put = bdb_tool_entry_put;
 360         bi->bi_tool_entry_reindex = 0;
 361         bi->bi_tool_sync = 0;
 362
 363         bi->bi_connection_init = 0;
 364         bi->bi_connection_destroy = 0;
 365
 366         return 0;
 367 }