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 1998-2005 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 int
  28 ldbm_back_initialize(
  29     BackendInfo *bi
  30 )
  31 {
  32         static char *controls[] = {
  33                 LDAP_CONTROL_MANAGEDSAIT,
  34 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
  35                 LDAP_CONTROL_X_PERMISSIVE_MODIFY,
  36 #endif
  37                 NULL
  38         };
  39
  40         bi->bi_controls = controls;
  41
  42         bi->bi_flags |=
  43                 SLAP_BFLAG_INCREMENT |
  44 #ifdef LDBM_SUBENTRIES
  45                 SLAP_BFLAG_SUBENTRIES |
  46 #endif
  47                 SLAP_BFLAG_ALIASES |
  48                 SLAP_BFLAG_REFERRALS;
  49
  50         bi->bi_open = ldbm_back_open;
  51         bi->bi_config = NULL;
  52         bi->bi_close = ldbm_back_close;
  53         bi->bi_destroy = ldbm_back_destroy;
  54
  55         bi->bi_db_init = ldbm_back_db_init;
  56         bi->bi_db_config = ldbm_back_db_config;
  57         bi->bi_db_open = ldbm_back_db_open;
  58         bi->bi_db_close = ldbm_back_db_close;
  59         bi->bi_db_destroy = ldbm_back_db_destroy;
  60
  61         bi->bi_op_bind = ldbm_back_bind;
  62         bi->bi_op_unbind = 0;
  63         bi->bi_op_search = ldbm_back_search;
  64         bi->bi_op_compare = ldbm_back_compare;
  65         bi->bi_op_modify = ldbm_back_modify;
  66         bi->bi_op_modrdn = ldbm_back_modrdn;
  67         bi->bi_op_add = ldbm_back_add;
  68         bi->bi_op_delete = ldbm_back_delete;
  69         bi->bi_op_abandon = 0;
  70
  71         bi->bi_extended = ldbm_back_extended;
  72
  73         bi->bi_entry_release_rw = ldbm_back_entry_release_rw;
  74         bi->bi_entry_get_rw = ldbm_back_entry_get;
  75         bi->bi_chk_referrals = ldbm_back_referrals;
  76         bi->bi_operational = ldbm_back_operational;
  77         bi->bi_has_subordinates = ldbm_back_hasSubordinates;
  78
  79         /*
  80          * hooks for slap tools
  81          */
  82         bi->bi_tool_entry_open = ldbm_tool_entry_open;
  83         bi->bi_tool_entry_close = ldbm_tool_entry_close;
  84         bi->bi_tool_entry_first = ldbm_tool_entry_first;
  85         bi->bi_tool_entry_next = ldbm_tool_entry_next;
  86         bi->bi_tool_entry_get = ldbm_tool_entry_get;
  87         bi->bi_tool_entry_put = ldbm_tool_entry_put;
  88         bi->bi_tool_entry_reindex = ldbm_tool_entry_reindex;
  89         bi->bi_tool_sync = ldbm_tool_sync;
  90
  91         bi->bi_tool_dn2id_get = 0;
  92         bi->bi_tool_id2entry_get = 0;
  93         bi->bi_tool_entry_modify = 0;
  94
  95         bi->bi_connection_init = 0;
  96         bi->bi_connection_destroy = 0;
  97
  98         return 0;
  99 }
 100
 101 int
 102 ldbm_back_destroy(
 103     BackendInfo *bi
 104 )
 105 {
 106         return 0;
 107 }
 108
 109 int
 110 ldbm_back_open(
 111     BackendInfo *bi
 112 )
 113 {
 114         int rc;
 115
 116         /* initialize the underlying database system */
 117         rc = ldbm_initialize( NULL );
 118         return rc;
 119 }
 120
 121 int
 122 ldbm_back_close(
 123     BackendInfo *bi
 124 )
 125 {
 126         /* terminate the underlying database system */
 127         ldbm_shutdown();
 128         return 0;
 129 }
 130
 131 int
 132 ldbm_back_db_init(
 133     Backend     *be
 134 )
 135 {
 136         struct ldbminfo *li;
 137
 138         /* allocate backend-database-specific stuff */
 139         li = (struct ldbminfo *) ch_calloc( 1, sizeof(struct ldbminfo) );
 140
 141         /* arrange to read nextid later (on first request for it) */
 142         li->li_nextid = NOID;
 143
 144         /* default cache size */
 145         li->li_cache.c_maxsize = DEFAULT_CACHE_SIZE;
 146
 147         /* default database cache size */
 148         li->li_dbcachesize = DEFAULT_DBCACHE_SIZE;
 149
 150         /* default db mode is with locking */
 151         li->li_dblocking = 1;
 152
 153         /* default db mode is with write synchronization */
 154         li->li_dbwritesync = 1;
 155
 156         /* default file creation mode */
 157         li->li_mode = SLAPD_DEFAULT_DB_MODE;
 158
 159         /* default database directory */
 160         li->li_directory = ch_strdup( SLAPD_DEFAULT_DB_DIR );
 161
 162         /* DB_ENV environment pointer for DB3 */
 163         li->li_dbenv = 0;
 164
 165         /* envdirok is turned on by ldbm_initialize_env if DB3 */
 166         li->li_envdirok = 0;
 167
 168         /* syncfreq is 0 if disabled, or # seconds */
 169         li->li_dbsyncfreq = 0;
 170
 171         /* wait up to dbsyncwaitn times if server is busy */
 172         li->li_dbsyncwaitn = 12;
 173
 174         /* delay interval */
 175         li->li_dbsyncwaitinterval = 5;
 176
 177         /* flag to notify ldbm_cache_sync_daemon to shut down */
 178         li->li_dbshutdown = 0;
 179
 180         /* initialize various mutex locks & condition variables */
 181         ldap_pvt_thread_rdwr_init( &li->li_giant_rwlock );
 182         ldap_pvt_thread_mutex_init( &li->li_cache.c_mutex );
 183         ldap_pvt_thread_mutex_init( &li->li_dbcache_mutex );
 184         ldap_pvt_thread_cond_init( &li->li_dbcache_cv );
 185
 186         be->be_private = li;
 187
 188         return 0;
 189 }
 190
 191 int
 192 ldbm_back_db_open(
 193     BackendDB   *be
 194 )
 195 {
 196         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
 197         li->li_dbenv = ldbm_initialize_env( li->li_directory,
 198                 li->li_dbcachesize, &li->li_envdirok );
 199
 200         /* sync thread */
 201         if ( li->li_dbsyncfreq > 0 )
 202         {
 203                 int rc;
 204                 rc = ldap_pvt_thread_create( &li->li_dbsynctid,
 205                         0, ldbm_cache_sync_daemon, (void*)be );
 206
 207                 if ( rc != 0 )
 208                 {
 209                         Debug(  LDAP_DEBUG_ANY,
 210                                 "sync ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
 211                         return 1;
 212                 }
 213         }
 214
 215         return 0;
 216 }
 217
 218 int
 219 ldbm_back_db_destroy(
 220     BackendDB   *be
 221 )
 222 {
 223         /* should free/destroy every in be_private */
 224         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
 225
 226         if (li->li_dbenv)
 227             ldbm_shutdown_env(li->li_dbenv);
 228
 229         free( li->li_directory );
 230         attr_index_destroy( li->li_attrs );
 231
 232         ldap_pvt_thread_rdwr_destroy( &li->li_giant_rwlock );
 233         ldap_pvt_thread_mutex_destroy( &li->li_cache.c_mutex );
 234         ldap_pvt_thread_mutex_destroy( &li->li_dbcache_mutex );
 235         ldap_pvt_thread_cond_destroy( &li->li_dbcache_cv );
 236
 237         free( be->be_private );
 238         be->be_private = NULL;
 239
 240         return 0;
 241 }
 242
 243 #if SLAPD_LDBM == SLAPD_MOD_DYNAMIC
 244
 245 /* conditionally define the init_module() function */
 246 SLAP_BACKEND_INIT_MODULE( ldbm )
 247
 248 #endif /* SLAPD_LDBM == SLAPD_MOD_DYNAMIC */
 249
 250