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

   1 /* init.c - initialize ldbm backend */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2003 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16
  17 #include "portable.h"
  18
  19 #include <stdio.h>
  20
  21 #include <ac/string.h>
  22 #include <ac/socket.h>
  23
  24 #include "slap.h"
  25 #include "back-ldbm.h"
  26
  27 #ifdef SLAPD_LDBM_DYNAMIC
  28
  29 int init_module(int argc, char *argv[]) {
  30     BackendInfo bi;
  31
  32     memset( &bi, '\0', sizeof(bi) );
  33     bi.bi_type = "ldbm";
  34     bi.bi_init = ldbm_back_initialize;
  35
  36     backend_add(&bi);
  37     return 0;
  38 }
  39
  40 #endif /* SLAPD_LDBM_DYNAMIC */
  41
  42 int
  43 ldbm_back_initialize(
  44     BackendInfo *bi
  45 )
  46 {
  47         static char *controls[] = {
  48                 LDAP_CONTROL_MANAGEDSAIT,
  49                 LDAP_CONTROL_VALUESRETURNFILTER,
  50                 NULL
  51         };
  52
  53         bi->bi_controls = controls;
  54
  55         bi->bi_open = ldbm_back_open;
  56         bi->bi_config = NULL;
  57         bi->bi_close = ldbm_back_close;
  58         bi->bi_destroy = ldbm_back_destroy;
  59
  60         bi->bi_db_init = ldbm_back_db_init;
  61         bi->bi_db_config = ldbm_back_db_config;
  62         bi->bi_db_open = ldbm_back_db_open;
  63         bi->bi_db_close = ldbm_back_db_close;
  64         bi->bi_db_destroy = ldbm_back_db_destroy;
  65
  66         bi->bi_op_bind = ldbm_back_bind;
  67         bi->bi_op_unbind = 0;
  68         bi->bi_op_search = ldbm_back_search;
  69         bi->bi_op_compare = ldbm_back_compare;
  70         bi->bi_op_modify = ldbm_back_modify;
  71         bi->bi_op_modrdn = ldbm_back_modrdn;
  72         bi->bi_op_add = ldbm_back_add;
  73         bi->bi_op_delete = ldbm_back_delete;
  74         bi->bi_op_abandon = 0;
  75
  76         bi->bi_extended = ldbm_back_extended;
  77
  78         bi->bi_entry_release_rw = ldbm_back_entry_release_rw;
  79         bi->bi_entry_get_rw = ldbm_back_entry_get;
  80         bi->bi_chk_referrals = ldbm_back_referrals;
  81         bi->bi_operational = ldbm_back_operational;
  82         bi->bi_has_subordinates = ldbm_back_hasSubordinates;
  83
  84         /*
  85          * hooks for slap tools
  86          */
  87         bi->bi_tool_entry_open = ldbm_tool_entry_open;
  88         bi->bi_tool_entry_close = ldbm_tool_entry_close;
  89         bi->bi_tool_entry_first = ldbm_tool_entry_first;
  90         bi->bi_tool_entry_next = ldbm_tool_entry_next;
  91         bi->bi_tool_entry_get = ldbm_tool_entry_get;
  92         bi->bi_tool_entry_put = ldbm_tool_entry_put;
  93         bi->bi_tool_entry_reindex = ldbm_tool_entry_reindex;
  94         bi->bi_tool_sync = ldbm_tool_sync;
  95
  96         bi->bi_tool_dn2id_get = 0;
  97         bi->bi_tool_id2entry_get = 0;
  98         bi->bi_tool_entry_modify = 0;
  99
 100         bi->bi_connection_init = 0;
 101         bi->bi_connection_destroy = 0;
 102
 103         return 0;
 104 }
 105
 106 int
 107 ldbm_back_destroy(
 108     BackendInfo *bi
 109 )
 110 {
 111         return 0;
 112 }
 113
 114 int
 115 ldbm_back_open(
 116     BackendInfo *bi
 117 )
 118 {
 119         int rc;
 120
 121         /* initialize the underlying database system */
 122         rc = ldbm_initialize( NULL );
 123         return rc;
 124 }
 125
 126 int
 127 ldbm_back_close(
 128     BackendInfo *bi
 129 )
 130 {
 131         /* terminate the underlying database system */
 132         ldbm_shutdown();
 133         return 0;
 134 }
 135
 136 int
 137 ldbm_back_db_init(
 138     Backend     *be
 139 )
 140 {
 141         struct ldbminfo *li;
 142
 143         /* indicate system schema supported */
 144         be->be_flags |=
 145                 SLAP_BFLAG_INCREMENT |
 146 #ifdef LDBM_SUBENTRIES
 147                 SLAP_BFLAG_SUBENTRIES |
 148 #endif
 149                 SLAP_BFLAG_ALIASES |
 150                 SLAP_BFLAG_REFERRALS;
 151
 152         /* allocate backend-database-specific stuff */
 153         li = (struct ldbminfo *) ch_calloc( 1, sizeof(struct ldbminfo) );
 154
 155         /* arrange to read nextid later (on first request for it) */
 156         li->li_nextid = NOID;
 157
 158         /* default cache size */
 159         li->li_cache.c_maxsize = DEFAULT_CACHE_SIZE;
 160
 161         /* default database cache size */
 162         li->li_dbcachesize = DEFAULT_DBCACHE_SIZE;
 163
 164         /* default db mode is with locking */
 165         li->li_dblocking = 1;
 166
 167         /* default db mode is with write synchronization */
 168         li->li_dbwritesync = 1;
 169
 170         /* default file creation mode */
 171         li->li_mode = SLAPD_DEFAULT_DB_MODE;
 172
 173         /* default database directory */
 174         li->li_directory = ch_strdup( SLAPD_DEFAULT_DB_DIR );
 175
 176         /* DB_ENV environment pointer for DB3 */
 177         li->li_dbenv = 0;
 178
 179         /* envdirok is turned on by ldbm_initialize_env if DB3 */
 180         li->li_envdirok = 0;
 181
 182         /* syncfreq is 0 if disabled, or # seconds */
 183         li->li_dbsyncfreq = 0;
 184
 185         /* wait up to dbsyncwaitn times if server is busy */
 186         li->li_dbsyncwaitn = 12;
 187
 188         /* delay interval */
 189         li->li_dbsyncwaitinterval = 5;
 190
 191         /* flag to notify ldbm_cache_sync_daemon to shut down */
 192         li->li_dbshutdown = 0;
 193
 194         /* initialize various mutex locks & condition variables */
 195         ldap_pvt_thread_rdwr_init( &li->li_giant_rwlock );
 196         ldap_pvt_thread_mutex_init( &li->li_cache.c_mutex );
 197         ldap_pvt_thread_mutex_init( &li->li_dbcache_mutex );
 198         ldap_pvt_thread_cond_init( &li->li_dbcache_cv );
 199
 200         be->be_private = li;
 201
 202         return 0;
 203 }
 204
 205 int
 206 ldbm_back_db_open(
 207     BackendDB   *be
 208 )
 209 {
 210         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
 211         li->li_dbenv = ldbm_initialize_env( li->li_directory,
 212                 li->li_dbcachesize, &li->li_envdirok );
 213
 214         /* sync thread */
 215         if ( li->li_dbsyncfreq > 0 )
 216         {
 217                 int rc;
 218                 rc = ldap_pvt_thread_create( &li->li_dbsynctid,
 219                         0, ldbm_cache_sync_daemon, (void*)be );
 220
 221                 if ( rc != 0 )
 222                 {
 223 #ifdef NEW_LOGGING
 224                         LDAP_LOG ( BACK_LDBM, ERR, "ldbm_back_db_open: sync "
 225                                 "ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
 226 #else
 227                         Debug(  LDAP_DEBUG_ANY,
 228                                 "sync ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
 229 #endif
 230                         return 1;
 231                 }
 232         }
 233
 234         return 0;
 235 }
 236
 237 int
 238 ldbm_back_db_destroy(
 239     BackendDB   *be
 240 )
 241 {
 242         /* should free/destroy every in be_private */
 243         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
 244
 245         if (li->li_dbenv)
 246             ldbm_shutdown_env(li->li_dbenv);
 247
 248         free( li->li_directory );
 249         attr_index_destroy( li->li_attrs );
 250
 251         ldap_pvt_thread_rdwr_destroy( &li->li_giant_rwlock );
 252         ldap_pvt_thread_mutex_destroy( &li->li_cache.c_mutex );
 253         ldap_pvt_thread_mutex_destroy( &li->li_dbcache_mutex );
 254         ldap_pvt_thread_cond_destroy( &li->li_dbcache_cv );
 255
 256         free( be->be_private );
 257         be->be_private = NULL;
 258
 259         return 0;
 260 }