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 #include <ldap_rq.h>
  27
  28 int
  29 ldbm_back_initialize(
  30     BackendInfo *bi
  31 )
  32 {
  33         static char *controls[] = {
  34                 LDAP_CONTROL_MANAGEDSAIT,
  35 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
  36                 LDAP_CONTROL_X_PERMISSIVE_MODIFY,
  37 #endif
  38                 NULL
  39         };
  40
  41         bi->bi_controls = controls;
  42
  43         bi->bi_flags |=
  44                 SLAP_BFLAG_INCREMENT |
  45 #ifdef LDBM_SUBENTRIES
  46                 SLAP_BFLAG_SUBENTRIES |
  47 #endif
  48                 SLAP_BFLAG_ALIASES |
  49                 SLAP_BFLAG_REFERRALS;
  50
  51         bi->bi_open = ldbm_back_open;
  52         bi->bi_config = NULL;
  53         bi->bi_close = ldbm_back_close;
  54         bi->bi_destroy = ldbm_back_destroy;
  55
  56         bi->bi_db_init = ldbm_back_db_init;
  57         bi->bi_db_config = ldbm_back_db_config;
  58         bi->bi_db_open = ldbm_back_db_open;
  59         bi->bi_db_close = ldbm_back_db_close;
  60         bi->bi_db_destroy = ldbm_back_db_destroy;
  61
  62         bi->bi_op_bind = ldbm_back_bind;
  63         bi->bi_op_unbind = 0;
  64         bi->bi_op_search = ldbm_back_search;
  65         bi->bi_op_compare = ldbm_back_compare;
  66         bi->bi_op_modify = ldbm_back_modify;
  67         bi->bi_op_modrdn = ldbm_back_modrdn;
  68         bi->bi_op_add = ldbm_back_add;
  69         bi->bi_op_delete = ldbm_back_delete;
  70         bi->bi_op_abandon = 0;
  71
  72         bi->bi_extended = ldbm_back_extended;
  73
  74         bi->bi_entry_release_rw = ldbm_back_entry_release_rw;
  75         bi->bi_entry_get_rw = ldbm_back_entry_get;
  76         bi->bi_chk_referrals = ldbm_back_referrals;
  77         bi->bi_operational = ldbm_back_operational;
  78         bi->bi_has_subordinates = ldbm_back_hasSubordinates;
  79
  80         /*
  81          * hooks for slap tools
  82          */
  83         bi->bi_tool_entry_open = ldbm_tool_entry_open;
  84         bi->bi_tool_entry_close = ldbm_tool_entry_close;
  85         bi->bi_tool_entry_first = ldbm_tool_entry_first;
  86         bi->bi_tool_entry_next = ldbm_tool_entry_next;
  87         bi->bi_tool_entry_get = ldbm_tool_entry_get;
  88         bi->bi_tool_entry_put = ldbm_tool_entry_put;
  89         bi->bi_tool_entry_reindex = ldbm_tool_entry_reindex;
  90         bi->bi_tool_sync = ldbm_tool_sync;
  91
  92         bi->bi_tool_dn2id_get = 0;
  93         bi->bi_tool_id2entry_get = 0;
  94         bi->bi_tool_entry_modify = 0;
  95
  96         bi->bi_connection_init = 0;
  97         bi->bi_connection_destroy = 0;
  98
  99         return 0;
 100 }
 101
 102 int
 103 ldbm_back_destroy(
 104     BackendInfo *bi
 105 )
 106 {
 107         return 0;
 108 }
 109
 110 int
 111 ldbm_back_open(
 112     BackendInfo *bi
 113 )
 114 {
 115         int rc;
 116
 117         /* initialize the underlying database system */
 118         rc = ldbm_initialize( NULL );
 119         return rc;
 120 }
 121
 122 int
 123 ldbm_back_close(
 124     BackendInfo *bi
 125 )
 126 {
 127         /* terminate the underlying database system */
 128         ldbm_shutdown();
 129         return 0;
 130 }
 131
 132 int
 133 ldbm_back_db_init(
 134     Backend     *be
 135 )
 136 {
 137         struct ldbminfo *li;
 138
 139         /* allocate backend-database-specific stuff */
 140         li = (struct ldbminfo *) ch_calloc( 1, sizeof(struct ldbminfo) );
 141
 142         /* arrange to read nextid later (on first request for it) */
 143         li->li_nextid = NOID;
 144
 145         /* default cache size */
 146         li->li_cache.c_maxsize = DEFAULT_CACHE_SIZE;
 147
 148         /* default database cache size */
 149         li->li_dbcachesize = DEFAULT_DBCACHE_SIZE;
 150
 151         /* default db mode is with locking */
 152         li->li_dblocking = 1;
 153
 154         /* default db mode is with write synchronization */
 155         li->li_dbwritesync = 1;
 156
 157         /* default file creation mode */
 158         li->li_mode = SLAPD_DEFAULT_DB_MODE;
 159
 160         /* default database directory */
 161         li->li_directory = ch_strdup( SLAPD_DEFAULT_DB_DIR );
 162
 163         /* DB_ENV environment pointer for DB3 */
 164         li->li_dbenv = 0;
 165
 166         /* envdirok is turned on by ldbm_initialize_env if DB3 */
 167         li->li_envdirok = 0;
 168
 169         /* syncfreq is 0 if disabled, or # seconds */
 170         li->li_dbsyncfreq = 0;
 171
 172         /* wait up to dbsyncwaitn times if server is busy */
 173         li->li_dbsyncwaitn = 12;
 174
 175         /* delay interval */
 176         li->li_dbsyncwaitinterval = 5;
 177
 178         /* current wait counter */
 179         li->li_dbsyncwaitcount = 0;
 180
 181         /* initialize various mutex locks & condition variables */
 182         ldap_pvt_thread_rdwr_init( &li->li_giant_rwlock );
 183         ldap_pvt_thread_mutex_init( &li->li_cache.c_mutex );
 184         ldap_pvt_thread_mutex_init( &li->li_dbcache_mutex );
 185         ldap_pvt_thread_cond_init( &li->li_dbcache_cv );
 186
 187         be->be_private = li;
 188
 189         return 0;
 190 }
 191
 192 int
 193 ldbm_back_db_open(
 194     BackendDB   *be
 195 )
 196 {
 197         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
 198         li->li_dbenv = ldbm_initialize_env( li->li_directory,
 199                 li->li_dbcachesize, &li->li_envdirok );
 200
 201         /* If we're in server mode and a sync frequency was set,
 202          * submit a task to perform periodic db syncs.
 203          */
 204         if (( slapMode & SLAP_SERVER_MODE ) && li->li_dbsyncfreq > 0 )
 205         {
 206                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 207                 ldap_pvt_runqueue_insert( &slapd_rq, li->li_dbsyncfreq,
 208                         ldbm_cache_sync_daemon, be,
 209                         "ldbm_cache_sync", be->be_suffix[0].bv_val );
 210                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 211         }
 212
 213         return 0;
 214 }
 215
 216 int
 217 ldbm_back_db_destroy(
 218     BackendDB   *be
 219 )
 220 {
 221         /* should free/destroy every in be_private */
 222         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
 223
 224         if (li->li_dbenv)
 225             ldbm_shutdown_env(li->li_dbenv);
 226
 227         free( li->li_directory );
 228         attr_index_destroy( li->li_attrs );
 229
 230         ldap_pvt_thread_rdwr_destroy( &li->li_giant_rwlock );
 231         ldap_pvt_thread_mutex_destroy( &li->li_cache.c_mutex );
 232         ldap_pvt_thread_mutex_destroy( &li->li_dbcache_mutex );
 233         ldap_pvt_thread_cond_destroy( &li->li_dbcache_cv );
 234
 235         free( be->be_private );
 236         be->be_private = NULL;
 237
 238         return 0;
 239 }
 240
 241 #if SLAPD_LDBM == SLAPD_MOD_DYNAMIC
 242
 243 /* conditionally define the init_module() function */
 244 SLAP_BACKEND_INIT_MODULE( ldbm )
 245
 246 #endif /* SLAPD_LDBM == SLAPD_MOD_DYNAMIC */
 247
 248