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

   1 /* init.c - initialize ldbm backend */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 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
  12 #include <ac/string.h>
  13 #include <ac/socket.h>
  14
  15 #include "slap.h"
  16 #include "back-ldbm.h"
  17
  18 #ifdef SLAPD_LDBM_DYNAMIC
  19
  20 int back_ldbm_LTX_init_module(int argc, char *argv[]) {
  21     BackendInfo bi;
  22
  23     memset( &bi, '\0', sizeof(bi) );
  24     bi.bi_type = "ldbm";
  25     bi.bi_init = ldbm_back_initialize;
  26
  27     backend_add(&bi);
  28     return 0;
  29 }
  30
  31 #endif /* SLAPD_LDBM_DYNAMIC */
  32
  33 int
  34 ldbm_back_initialize(
  35     BackendInfo *bi
  36 )
  37 {
  38         static char *controls[] = {
  39                 LDAP_CONTROL_MANAGEDSAIT,
  40                 LDAP_CONTROL_VALUESRETURNFILTER,
  41                 NULL
  42         };
  43
  44         bi->bi_controls = controls;
  45
  46         bi->bi_open = ldbm_back_open;
  47         bi->bi_config = NULL;
  48         bi->bi_close = ldbm_back_close;
  49         bi->bi_destroy = ldbm_back_destroy;
  50
  51         bi->bi_db_init = ldbm_back_db_init;
  52         bi->bi_db_config = ldbm_back_db_config;
  53         bi->bi_db_open = ldbm_back_db_open;
  54         bi->bi_db_close = ldbm_back_db_close;
  55         bi->bi_db_destroy = ldbm_back_db_destroy;
  56
  57         bi->bi_op_bind = ldbm_back_bind;
  58         bi->bi_op_unbind = 0;
  59         bi->bi_op_search = ldbm_back_search;
  60         bi->bi_op_compare = ldbm_back_compare;
  61         bi->bi_op_modify = ldbm_back_modify;
  62         bi->bi_op_modrdn = ldbm_back_modrdn;
  63         bi->bi_op_add = ldbm_back_add;
  64         bi->bi_op_delete = ldbm_back_delete;
  65         bi->bi_op_abandon = 0;
  66
  67         bi->bi_extended = ldbm_back_extended;
  68
  69         bi->bi_entry_release_rw = ldbm_back_entry_release_rw;
  70         bi->bi_acl_group = ldbm_back_group;
  71         bi->bi_acl_attribute = ldbm_back_attribute;
  72         bi->bi_chk_referrals = ldbm_back_referrals;
  73         bi->bi_operational = ldbm_back_operational;
  74
  75         /*
  76          * hooks for slap tools
  77          */
  78         bi->bi_tool_entry_open = ldbm_tool_entry_open;
  79         bi->bi_tool_entry_close = ldbm_tool_entry_close;
  80         bi->bi_tool_entry_first = ldbm_tool_entry_first;
  81         bi->bi_tool_entry_next = ldbm_tool_entry_next;
  82         bi->bi_tool_entry_get = ldbm_tool_entry_get;
  83         bi->bi_tool_entry_put = ldbm_tool_entry_put;
  84         bi->bi_tool_entry_reindex = ldbm_tool_entry_reindex;
  85         bi->bi_tool_sync = ldbm_tool_sync;
  86
  87         bi->bi_connection_init = 0;
  88         bi->bi_connection_destroy = 0;
  89
  90         return 0;
  91 }
  92
  93 int
  94 ldbm_back_destroy(
  95     BackendInfo *bi
  96 )
  97 {
  98         return 0;
  99 }
 100
 101 int
 102 ldbm_back_open(
 103     BackendInfo *bi
 104 )
 105 {
 106         int rc;
 107
 108         /* initialize the underlying database system */
 109         rc = ldbm_initialize( NULL );
 110         return rc;
 111 }
 112
 113 int
 114 ldbm_back_close(
 115     BackendInfo *bi
 116 )
 117 {
 118         /* terminate the underlying database system */
 119         ldbm_shutdown();
 120         return 0;
 121 }
 122
 123 int
 124 ldbm_back_db_init(
 125     Backend     *be
 126 )
 127 {
 128         struct ldbminfo *li;
 129
 130         /* indicate system schema supported */
 131         be->be_flags |= SLAP_BFLAG_ALIASES|SLAP_BFLAG_REFERRALS;
 132
 133         /* allocate backend-database-specific stuff */
 134         li = (struct ldbminfo *) ch_calloc( 1, sizeof(struct ldbminfo) );
 135
 136         /* arrange to read nextid later (on first request for it) */
 137         li->li_nextid = NOID;
 138
 139         /* default cache size */
 140         li->li_cache.c_maxsize = DEFAULT_CACHE_SIZE;
 141
 142         /* default database cache size */
 143         li->li_dbcachesize = DEFAULT_DBCACHE_SIZE;
 144
 145         /* default db mode is with locking */
 146         li->li_dblocking = 1;
 147
 148         /* default db mode is with write synchronization */
 149         li->li_dbwritesync = 1;
 150
 151         /* default file creation mode */
 152         li->li_mode = SLAPD_DEFAULT_DB_MODE;
 153
 154         /* default database directory */
 155         li->li_directory = ch_strdup( SLAPD_DEFAULT_DB_DIR );
 156
 157         /* DB_ENV environment pointer for DB3 */
 158         li->li_dbenv = 0;
 159
 160         /* envdirok is turned on by ldbm_initialize_env if DB3 */
 161         li->li_envdirok = 0;
 162
 163         /* syncfreq is 0 if disabled, or # seconds */
 164         li->li_dbsyncfreq = 0;
 165
 166         /* wait up to dbsyncwaitn times if server is busy */
 167         li->li_dbsyncwaitn = 12;
 168
 169         /* delay interval */
 170         li->li_dbsyncwaitinterval = 5;
 171
 172         /* flag to notify ldbm_cache_sync_daemon to shut down */
 173         li->li_dbshutdown = 0;
 174
 175         /* initialize various mutex locks & condition variables */
 176         ldap_pvt_thread_rdwr_init( &li->li_giant_rwlock );
 177         ldap_pvt_thread_mutex_init( &li->li_cache.c_mutex );
 178         ldap_pvt_thread_mutex_init( &li->li_dbcache_mutex );
 179         ldap_pvt_thread_cond_init( &li->li_dbcache_cv );
 180
 181         be->be_private = li;
 182
 183         return 0;
 184 }
 185
 186 int
 187 ldbm_back_db_open(
 188     BackendDB   *be
 189 )
 190 {
 191         struct ldbminfo *li = (struct ldbminfo *) be->be_private;
 192         li->li_dbenv = ldbm_initialize_env( li->li_directory,
 193                 li->li_dbcachesize, &li->li_envdirok );
 194
 195         /* sync thread */
 196         if ( li->li_dbsyncfreq > 0 )
 197         {
 198                 int rc;
 199                 rc = ldap_pvt_thread_create( &li->li_dbsynctid,
 200                         0, ldbm_cache_sync_daemon, (void*)be );
 201
 202                 if ( rc != 0 )
 203                 {
 204 #ifdef NEW_LOGGING
 205                         LDAP_LOG ( BACK_LDBM, ERR, "ldbm_back_db_open: sync "
 206                                 "ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
 207 #else
 208                         Debug(  LDAP_DEBUG_ANY,
 209                                 "sync ldap_pvt_thread_create failed (%d)\n", rc, 0, 0 );
 210 #endif
 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 }