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