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openldap  2.4.31
Classes | Defines | Typedefs | Functions | Variables
init.c File Reference
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/unistd.h>
#include <ac/stdlib.h>
#include <ac/errno.h>
#include <sys/stat.h>
#include "back-bdb.h"
#include <lutil.h>
#include <ldap_rq.h>
#include "alock.h"
#include "config.h"

Go to the source code of this file.

Classes

struct  bdbi_database

Defines

#define bdb_db_init   BDB_SYMBOL(db_init)
#define bdb_db_open   BDB_SYMBOL(db_open)
#define bdb_db_close   BDB_SYMBOL(db_close)
#define BDB_TXN_FLAGS   (DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN)

Typedefs

typedef voiddb_malloc (size_t)
typedef voiddb_realloc (void *, size_t)

Functions

static int bdb_db_init (BackendDB *be, ConfigReply *cr)
static int bdb_db_close (BackendDB *be, ConfigReply *cr)
static int bdb_db_open (BackendDB *be, ConfigReply *cr)
static int bdb_db_destroy (BackendDB *be, ConfigReply *cr)
int bdb_back_initialize (BackendInfo *bi)

Variables

static struct bdbi_database bdbi_databases []

Class Documentation

struct bdbi_database

Definition at line 31 of file init.c.

Class Members
char * file
int flags
int type

Define Documentation

Definition at line 47 of file init.c.

#define bdb_db_init   BDB_SYMBOL(db_init)

Definition at line 45 of file init.c.

Definition at line 46 of file init.c.

#define BDB_TXN_FLAGS   (DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN)

Typedef Documentation

typedef void* db_malloc(size_t)

Definition at line 42 of file init.c.

typedef void* db_realloc(void *, size_t)

Definition at line 43 of file init.c.


Function Documentation

Definition at line 725 of file init.c.

{
       int rc;

       static char *controls[] = {
              LDAP_CONTROL_ASSERT,
              LDAP_CONTROL_MANAGEDSAIT,
              LDAP_CONTROL_NOOP,
              LDAP_CONTROL_PAGEDRESULTS,
              LDAP_CONTROL_PRE_READ,
              LDAP_CONTROL_POST_READ,
              LDAP_CONTROL_SUBENTRIES,
              LDAP_CONTROL_X_PERMISSIVE_MODIFY,
#ifdef LDAP_X_TXN
              LDAP_CONTROL_X_TXN_SPEC,
#endif
              NULL
       };

       /* initialize the underlying database system */
       Debug( LDAP_DEBUG_TRACE,
              LDAP_XSTRING(bdb_back_initialize) ": initialize " 
              BDB_UCTYPE " backend\n", 0, 0, 0 );

       bi->bi_flags |=
              SLAP_BFLAG_INCREMENT |
              SLAP_BFLAG_SUBENTRIES |
              SLAP_BFLAG_ALIASES |
              SLAP_BFLAG_REFERRALS;

       bi->bi_controls = controls;

       {      /* version check */
              int major, minor, patch, ver;
              char *version = db_version( &major, &minor, &patch );
#ifdef HAVE_EBCDIC
              char v2[1024];

              /* All our stdio does an ASCII to EBCDIC conversion on
               * the output. Strings from the BDB library are already
               * in EBCDIC; we have to go back and forth...
               */
              strcpy( v2, version );
              __etoa( v2 );
              version = v2;
#endif

              ver = (major << 24) | (minor << 16) | patch;
              if( ver != DB_VERSION_FULL ) {
                     /* fail if a versions don't match */
                     Debug( LDAP_DEBUG_ANY,
                            LDAP_XSTRING(bdb_back_initialize) ": "
                            "BDB library version mismatch:"
                            " expected " DB_VERSION_STRING ","
                            " got %s\n", version, 0, 0 );
                     return -1;
              }

              Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_back_initialize)
                     ": %s\n", version, 0, 0 );
       }

       db_env_set_func_free( ber_memfree );
       db_env_set_func_malloc( (db_malloc *)ber_memalloc );
       db_env_set_func_realloc( (db_realloc *)ber_memrealloc );
#if !defined(NO_THREAD) && DB_VERSION_FULL <= 0x04070000
       /* This is a no-op on a NO_THREAD build. Leave the default
        * alone so that BDB will sleep on interprocess conflicts.
        * Don't bother on BDB 4.7...
        */
       db_env_set_func_yield( ldap_pvt_thread_yield );
#endif

       bi->bi_open = 0;
       bi->bi_close = 0;
       bi->bi_config = 0;
       bi->bi_destroy = 0;

       bi->bi_db_init = bdb_db_init;
       bi->bi_db_config = config_generic_wrapper;
       bi->bi_db_open = bdb_db_open;
       bi->bi_db_close = bdb_db_close;
       bi->bi_db_destroy = bdb_db_destroy;

       bi->bi_op_add = bdb_add;
       bi->bi_op_bind = bdb_bind;
       bi->bi_op_compare = bdb_compare;
       bi->bi_op_delete = bdb_delete;
       bi->bi_op_modify = bdb_modify;
       bi->bi_op_modrdn = bdb_modrdn;
       bi->bi_op_search = bdb_search;

       bi->bi_op_unbind = 0;

       bi->bi_extended = bdb_extended;

       bi->bi_chk_referrals = bdb_referrals;
       bi->bi_operational = bdb_operational;
       bi->bi_has_subordinates = bdb_hasSubordinates;
       bi->bi_entry_release_rw = bdb_entry_release;
       bi->bi_entry_get_rw = bdb_entry_get;

       /*
        * hooks for slap tools
        */
       bi->bi_tool_entry_open = bdb_tool_entry_open;
       bi->bi_tool_entry_close = bdb_tool_entry_close;
       bi->bi_tool_entry_first = backend_tool_entry_first;
       bi->bi_tool_entry_first_x = bdb_tool_entry_first_x;
       bi->bi_tool_entry_next = bdb_tool_entry_next;
       bi->bi_tool_entry_get = bdb_tool_entry_get;
       bi->bi_tool_entry_put = bdb_tool_entry_put;
       bi->bi_tool_entry_reindex = bdb_tool_entry_reindex;
       bi->bi_tool_sync = 0;
       bi->bi_tool_dn2id_get = bdb_tool_dn2id_get;
       bi->bi_tool_entry_modify = bdb_tool_entry_modify;

       bi->bi_connection_init = 0;
       bi->bi_connection_destroy = 0;

       rc = bdb_back_init_cf( bi );

       return rc;
}

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static int bdb_db_close ( BackendDB be,
ConfigReply *  cr 
) [static]

Definition at line 581 of file init.c.

{
       int rc;
       struct bdb_info *bdb = (struct bdb_info *) be->be_private;
       struct bdb_db_info *db;
       bdb_idl_cache_entry_t *entry, *next_entry;

       /* monitor handling */
       (void)bdb_monitor_db_close( be );

       {
              Entry *e = bdb->bi_cache.c_dntree.bei_e;
              if ( e ) {
                     bdb->bi_cache.c_dntree.bei_e = NULL;
                     e->e_private = NULL;
                     bdb_entry_return( e );
              }
       }

       bdb->bi_flags &= ~BDB_IS_OPEN;

       ber_bvarray_free( bdb->bi_db_config );
       bdb->bi_db_config = NULL;

       if( bdb->bi_dbenv ) {
              /* Free cache locker if we enabled locking.
               * TXNs must all be closed before DBs...
               */
              if ( !( slapMode & SLAP_TOOL_QUICK ) && bdb->bi_cache.c_txn ) {
                     TXN_ABORT( bdb->bi_cache.c_txn );
                     bdb->bi_cache.c_txn = NULL;
              }
              bdb_reader_flush( bdb->bi_dbenv );
       }

       while( bdb->bi_databases && bdb->bi_ndatabases-- ) {
              db = bdb->bi_databases[bdb->bi_ndatabases];
              rc = db->bdi_db->close( db->bdi_db, 0 );
              /* Lower numbered names are not strdup'd */
              if( bdb->bi_ndatabases >= BDB_NDB )
                     free( db->bdi_name.bv_val );
              free( db );
       }
       free( bdb->bi_databases );
       bdb->bi_databases = NULL;

       bdb_cache_release_all (&bdb->bi_cache);

       if ( bdb->bi_idl_cache_size ) {
              avl_free( bdb->bi_idl_tree, NULL );
              bdb->bi_idl_tree = NULL;
              entry = bdb->bi_idl_lru_head;
              do {
                     next_entry = entry->idl_lru_next;
                     if ( entry->idl )
                            free( entry->idl );
                     free( entry->kstr.bv_val );
                     free( entry );
                     entry = next_entry;
              } while ( entry != bdb->bi_idl_lru_head );
              bdb->bi_idl_lru_head = bdb->bi_idl_lru_tail = NULL;
       }

       /* close db environment */
       if( bdb->bi_dbenv ) {
              /* force a checkpoint, but not if we were ReadOnly,
               * and not in Quick mode since there are no transactions there.
               */
              if ( !( slapMode & ( SLAP_TOOL_QUICK|SLAP_TOOL_READONLY ))) {
                     rc = TXN_CHECKPOINT( bdb->bi_dbenv, 0, 0, DB_FORCE );
                     if( rc != 0 ) {
                            Debug( LDAP_DEBUG_ANY,
                                   "bdb_db_close: database \"%s\": "
                                   "txn_checkpoint failed: %s (%d).\n",
                                   be->be_suffix[0].bv_val, db_strerror(rc), rc );
                     }
              }

              rc = bdb->bi_dbenv->close( bdb->bi_dbenv, 0 );
              bdb->bi_dbenv = NULL;
              if( rc != 0 ) {
                     Debug( LDAP_DEBUG_ANY,
                            "bdb_db_close: database \"%s\": "
                            "close failed: %s (%d)\n",
                            be->be_suffix[0].bv_val, db_strerror(rc), rc );
                     return rc;
              }
       }

       rc = alock_close( &bdb->bi_alock_info, slapMode & SLAP_TOOL_QUICK );
       if( rc != 0 ) {
              Debug( LDAP_DEBUG_ANY,
                     "bdb_db_close: database \"%s\": alock_close failed\n",
                     be->be_suffix[0].bv_val, 0, 0 );
              return -1;
       }

       return 0;
}

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static int bdb_db_destroy ( BackendDB be,
ConfigReply *  cr 
) [static]

Definition at line 682 of file init.c.

{
       struct bdb_info *bdb = (struct bdb_info *) be->be_private;

       /* stop and remove checkpoint task */
       if ( bdb->bi_txn_cp_task ) {
              struct re_s *re = bdb->bi_txn_cp_task;
              bdb->bi_txn_cp_task = NULL;
              ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
              if ( ldap_pvt_runqueue_isrunning( &slapd_rq, re ) )
                     ldap_pvt_runqueue_stoptask( &slapd_rq, re );
              ldap_pvt_runqueue_remove( &slapd_rq, re );
              ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
       }

       /* monitor handling */
       (void)bdb_monitor_db_destroy( be );

       if( bdb->bi_dbenv_home ) ch_free( bdb->bi_dbenv_home );
       if( bdb->bi_db_config_path ) ch_free( bdb->bi_db_config_path );

       bdb_attr_index_destroy( bdb );

       ldap_pvt_thread_rdwr_destroy ( &bdb->bi_cache.c_rwlock );
       ldap_pvt_thread_mutex_destroy( &bdb->bi_cache.c_lru_mutex );
       ldap_pvt_thread_mutex_destroy( &bdb->bi_cache.c_count_mutex );
       ldap_pvt_thread_mutex_destroy( &bdb->bi_cache.c_eifree_mutex );
       ldap_pvt_thread_mutex_destroy( &bdb->bi_cache.c_dntree.bei_kids_mutex );
#ifdef BDB_HIER
       ldap_pvt_thread_mutex_destroy( &bdb->bi_modrdns_mutex );
#endif
       ldap_pvt_thread_mutex_destroy( &bdb->bi_lastid_mutex );
       ldap_pvt_thread_mutex_destroy( &bdb->bi_database_mutex );
       ldap_pvt_thread_rdwr_destroy( &bdb->bi_idl_tree_rwlock );
       ldap_pvt_thread_mutex_destroy( &bdb->bi_idl_tree_lrulock );

       ch_free( bdb );
       be->be_private = NULL;

       return 0;
}

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static int bdb_db_init ( BackendDB be,
ConfigReply *  cr 
) [static]

Definition at line 50 of file init.c.

{
       struct bdb_info      *bdb;
       int rc;

       Debug( LDAP_DEBUG_TRACE,
              LDAP_XSTRING(bdb_db_init) ": Initializing " BDB_UCTYPE " database\n",
              0, 0, 0 );

       /* allocate backend-database-specific stuff */
       bdb = (struct bdb_info *) ch_calloc( 1, sizeof(struct bdb_info) );

       /* DBEnv parameters */
       bdb->bi_dbenv_home = ch_strdup( SLAPD_DEFAULT_DB_DIR );
       bdb->bi_dbenv_xflags = DB_TIME_NOTGRANTED;
       bdb->bi_dbenv_mode = SLAPD_DEFAULT_DB_MODE;

       bdb->bi_cache.c_maxsize = DEFAULT_CACHE_SIZE;
       bdb->bi_cache.c_minfree = 1;

       bdb->bi_lock_detect = DB_LOCK_DEFAULT;
       bdb->bi_search_stack_depth = DEFAULT_SEARCH_STACK_DEPTH;
       bdb->bi_search_stack = NULL;

       ldap_pvt_thread_mutex_init( &bdb->bi_database_mutex );
       ldap_pvt_thread_mutex_init( &bdb->bi_lastid_mutex );
#ifdef BDB_HIER
       ldap_pvt_thread_mutex_init( &bdb->bi_modrdns_mutex );
#endif
       ldap_pvt_thread_mutex_init( &bdb->bi_cache.c_lru_mutex );
       ldap_pvt_thread_mutex_init( &bdb->bi_cache.c_count_mutex );
       ldap_pvt_thread_mutex_init( &bdb->bi_cache.c_eifree_mutex );
       ldap_pvt_thread_mutex_init( &bdb->bi_cache.c_dntree.bei_kids_mutex );
       ldap_pvt_thread_rdwr_init ( &bdb->bi_cache.c_rwlock );
       ldap_pvt_thread_rdwr_init( &bdb->bi_idl_tree_rwlock );
       ldap_pvt_thread_mutex_init( &bdb->bi_idl_tree_lrulock );

       be->be_private = bdb;
       be->be_cf_ocs = be->bd_info->bi_cf_ocs;

#ifndef BDB_MULTIPLE_SUFFIXES
       SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_ONE_SUFFIX;
#endif

       rc = bdb_monitor_db_init( be );

       return rc;
}

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static int bdb_db_open ( BackendDB be,
ConfigReply *  cr 
) [static]

Definition at line 103 of file init.c.

{
       int rc, i;
       struct bdb_info *bdb = (struct bdb_info *) be->be_private;
       struct stat stat1, stat2;
       u_int32_t flags;
       char path[MAXPATHLEN];
       char *dbhome;
       Entry *e = NULL;
       int do_recover = 0, do_alock_recover = 0;
       int alockt, quick = 0;
       int do_retry = 1;

       if ( be->be_suffix == NULL ) {
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(bdb_db_open) ": need suffix.\n",
                     1, 0, 0 );
              return -1;
       }

       Debug( LDAP_DEBUG_ARGS,
              LDAP_XSTRING(bdb_db_open) ": \"%s\"\n",
              be->be_suffix[0].bv_val, 0, 0 );

       /* Check existence of dbenv_home. Any error means trouble */
       rc = stat( bdb->bi_dbenv_home, &stat1 );
       if( rc != 0 ) {
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(bdb_db_open) ": database \"%s\": "
                     "cannot access database directory \"%s\" (%d).\n",
                     be->be_suffix[0].bv_val, bdb->bi_dbenv_home, errno );
              return -1;
       }

       /* Perform database use arbitration/recovery logic */
       alockt = (slapMode & SLAP_TOOL_READONLY) ? ALOCK_LOCKED : ALOCK_UNIQUE;
       if ( slapMode & SLAP_TOOL_QUICK ) {
              alockt |= ALOCK_NOSAVE;
              quick = 1;
       }

       rc = alock_open( &bdb->bi_alock_info, 
                            "slapd", 
                            bdb->bi_dbenv_home, alockt );

       /* alockt is TRUE if the existing environment was created in Quick mode */
       alockt = (rc & ALOCK_NOSAVE) ? 1 : 0;
       rc &= ~ALOCK_NOSAVE;

       if( rc == ALOCK_RECOVER ) {
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(bdb_db_open) ": database \"%s\": "
                     "unclean shutdown detected; attempting recovery.\n", 
                     be->be_suffix[0].bv_val, 0, 0 );
              do_alock_recover = 1;
              do_recover = DB_RECOVER;
       } else if( rc == ALOCK_BUSY ) {
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(bdb_db_open) ": database \"%s\": "
                     "database already in use.\n", 
                     be->be_suffix[0].bv_val, 0, 0 );
              return -1;
       } else if( rc != ALOCK_CLEAN ) {
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(bdb_db_open) ": database \"%s\": "
                     "alock package is unstable.\n", 
                     be->be_suffix[0].bv_val, 0, 0 );
              return -1;
       }
       if ( rc == ALOCK_CLEAN )
              be->be_flags |= SLAP_DBFLAG_CLEAN;

       /*
        * The DB_CONFIG file may have changed. If so, recover the
        * database so that new settings are put into effect. Also
        * note the possible absence of DB_CONFIG in the log.
        */
       if( stat( bdb->bi_db_config_path, &stat1 ) == 0 ) {
              if ( !do_recover ) {
                     char *ptr = lutil_strcopy(path, bdb->bi_dbenv_home);
                     *ptr++ = LDAP_DIRSEP[0];
                     strcpy( ptr, "__db.001" );
                     if( stat( path, &stat2 ) == 0 ) {
                            if( stat2.st_mtime < stat1.st_mtime ) {
                                   Debug( LDAP_DEBUG_ANY,
                                          LDAP_XSTRING(bdb_db_open) ": DB_CONFIG for suffix \"%s\" has changed.\n",
                                                 be->be_suffix[0].bv_val, 0, 0 );
                                   if ( quick ) {
                                          Debug( LDAP_DEBUG_ANY,
                                                 "Cannot use Quick mode; perform manual recovery first.\n",
                                                 0, 0, 0 );
                                          slapMode ^= SLAP_TOOL_QUICK;
                                          rc = -1;
                                          goto fail;
                                   } else {
                                          Debug( LDAP_DEBUG_ANY,
                                                 "Performing database recovery to activate new settings.\n",
                                                 0, 0, 0 );
                                   }
                                   do_recover = DB_RECOVER;
                            }
                     }
              }
       }
       else {
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(bdb_db_open) ": warning - no DB_CONFIG file found "
                     "in directory %s: (%d).\n"
                     "Expect poor performance for suffix \"%s\".\n",
                     bdb->bi_dbenv_home, errno, be->be_suffix[0].bv_val );
       }

       /* Always let slapcat run, regardless of environment state.
        * This can be used to cause a cache flush after an unclean
        * shutdown.
        */
       if ( do_recover && ( slapMode & SLAP_TOOL_READONLY )) {
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(bdb_db_open) ": database \"%s\": "
                     "recovery skipped in read-only mode. "
                     "Run manual recovery if errors are encountered.\n",
                     be->be_suffix[0].bv_val, 0, 0 );
              do_recover = 0;
              do_alock_recover = 0;
              quick = alockt;
       }

       /* An existing environment in Quick mode has nothing to recover. */
       if ( alockt && do_recover ) {
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(bdb_db_open) ": database \"%s\": "
                     "cannot recover, database must be reinitialized.\n", 
                     be->be_suffix[0].bv_val, 0, 0 );
              rc = -1;
              goto fail;
       }

       rc = db_env_create( &bdb->bi_dbenv, 0 );
       if( rc != 0 ) {
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(bdb_db_open) ": database \"%s\": "
                     "db_env_create failed: %s (%d).\n",
                     be->be_suffix[0].bv_val, db_strerror(rc), rc );
              goto fail;
       }

#ifdef HAVE_EBCDIC
       strcpy( path, bdb->bi_dbenv_home );
       __atoe( path );
       dbhome = path;
#else
       dbhome = bdb->bi_dbenv_home;
#endif

       /* If existing environment is clean but doesn't support
        * currently requested modes, remove it.
        */
       if ( !do_recover && ( alockt ^ quick )) {
shm_retry:
              rc = bdb->bi_dbenv->remove( bdb->bi_dbenv, dbhome, DB_FORCE );
              if ( rc ) {
                     Debug( LDAP_DEBUG_ANY,
                            LDAP_XSTRING(bdb_db_open) ": database \"%s\": "
                            "dbenv remove failed: %s (%d).\n",
                            be->be_suffix[0].bv_val, db_strerror(rc), rc );
                     bdb->bi_dbenv = NULL;
                     goto fail;
              }
              rc = db_env_create( &bdb->bi_dbenv, 0 );
              if( rc != 0 ) {
                     Debug( LDAP_DEBUG_ANY,
                            LDAP_XSTRING(bdb_db_open) ": database \"%s\": "
                            "db_env_create failed: %s (%d).\n",
                            be->be_suffix[0].bv_val, db_strerror(rc), rc );
                     goto fail;
              }
       }

       bdb->bi_dbenv->set_errpfx( bdb->bi_dbenv, be->be_suffix[0].bv_val );
       bdb->bi_dbenv->set_errcall( bdb->bi_dbenv, bdb_errcall );

       bdb->bi_dbenv->set_lk_detect( bdb->bi_dbenv, bdb->bi_lock_detect );

       if ( !BER_BVISNULL( &bdb->bi_db_crypt_key )) {
              rc = bdb->bi_dbenv->set_encrypt( bdb->bi_dbenv, bdb->bi_db_crypt_key.bv_val,
                     DB_ENCRYPT_AES );
              if ( rc ) {
                     Debug( LDAP_DEBUG_ANY,
                            LDAP_XSTRING(bdb_db_open) ": database \"%s\": "
                            "dbenv set_encrypt failed: %s (%d).\n",
                            be->be_suffix[0].bv_val, db_strerror(rc), rc );
                     goto fail;
              }
       }

       /* One long-lived TXN per thread, two TXNs per write op */
       bdb->bi_dbenv->set_tx_max( bdb->bi_dbenv, connection_pool_max * 3 );

       if( bdb->bi_dbenv_xflags != 0 ) {
              rc = bdb->bi_dbenv->set_flags( bdb->bi_dbenv,
                     bdb->bi_dbenv_xflags, 1);
              if( rc != 0 ) {
                     Debug( LDAP_DEBUG_ANY,
                            LDAP_XSTRING(bdb_db_open) ": database \"%s\": "
                            "dbenv_set_flags failed: %s (%d).\n",
                            be->be_suffix[0].bv_val, db_strerror(rc), rc );
                     goto fail;
              }
       }

#define       BDB_TXN_FLAGS (DB_INIT_LOCK | DB_INIT_LOG | DB_INIT_TXN)

       Debug( LDAP_DEBUG_TRACE,
              LDAP_XSTRING(bdb_db_open) ": database \"%s\": "
              "dbenv_open(%s).\n",
              be->be_suffix[0].bv_val, bdb->bi_dbenv_home, 0);

       flags = DB_INIT_MPOOL | DB_CREATE | DB_THREAD;

       if ( !quick )
              flags |= BDB_TXN_FLAGS;

       /* If a key was set, use shared memory for the BDB environment */
       if ( bdb->bi_shm_key ) {
              bdb->bi_dbenv->set_shm_key( bdb->bi_dbenv, bdb->bi_shm_key );
              flags |= DB_SYSTEM_MEM;
       }
       rc = (bdb->bi_dbenv->open)( bdb->bi_dbenv, dbhome,
                     flags | do_recover, bdb->bi_dbenv_mode );

       if ( rc ) {
              /* Regular open failed, probably a missing shm environment.
               * Start over, do a recovery.
               */
              if ( !do_recover && bdb->bi_shm_key && do_retry ) {
                     bdb->bi_dbenv->close( bdb->bi_dbenv, 0 );
                     rc = db_env_create( &bdb->bi_dbenv, 0 );
                     if( rc == 0 ) {
                            Debug( LDAP_DEBUG_ANY, LDAP_XSTRING(bdb_db_open)
                                   ": database \"%s\": "
                                   "shared memory env open failed, assuming stale env.\n",
                                   be->be_suffix[0].bv_val, 0, 0 );
                            do_retry = 0;
                            goto shm_retry;
                     }
              }
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(bdb_db_open) ": database \"%s\" cannot be %s, err %d. "
                     "Restore from backup!\n",
                     be->be_suffix[0].bv_val, do_recover ? "recovered" : "opened", rc );
              goto fail;
       }

       if ( do_alock_recover && alock_recover (&bdb->bi_alock_info) != 0 ) {
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(bdb_db_open) ": database \"%s\": alock_recover failed\n",
                     be->be_suffix[0].bv_val, 0, 0 );
              rc = -1;
              goto fail;
       }

#ifdef SLAP_ZONE_ALLOC
       if ( bdb->bi_cache.c_maxsize ) {
              bdb->bi_cache.c_zctx = slap_zn_mem_create(
                     SLAP_ZONE_INITSIZE, SLAP_ZONE_MAXSIZE,
                     SLAP_ZONE_DELTA, SLAP_ZONE_SIZE);
       }
#endif

       /* dncache defaults to 0 == unlimited
        * must be >= entrycache
        */
       if ( bdb->bi_cache.c_eimax && bdb->bi_cache.c_eimax < bdb->bi_cache.c_maxsize ) {
              bdb->bi_cache.c_eimax = bdb->bi_cache.c_maxsize;
       }

       if ( bdb->bi_idl_cache_max_size ) {
              bdb->bi_idl_tree = NULL;
              bdb->bi_idl_cache_size = 0;
       }

       flags = DB_THREAD | bdb->bi_db_opflags;

#ifdef DB_AUTO_COMMIT
       if ( !quick )
              flags |= DB_AUTO_COMMIT;
#endif

       bdb->bi_databases = (struct bdb_db_info **) ch_malloc(
              BDB_INDICES * sizeof(struct bdb_db_info *) );

       /* open (and create) main database */
       for( i = 0; bdbi_databases[i].name.bv_val; i++ ) {
              struct bdb_db_info *db;

              db = (struct bdb_db_info *) ch_calloc(1, sizeof(struct bdb_db_info));

              rc = db_create( &db->bdi_db, bdb->bi_dbenv, 0 );
              if( rc != 0 ) {
                     snprintf(cr->msg, sizeof(cr->msg),
                            "database \"%s\": db_create(%s) failed: %s (%d).",
                            be->be_suffix[0].bv_val, 
                            bdb->bi_dbenv_home, db_strerror(rc), rc );
                     Debug( LDAP_DEBUG_ANY,
                            LDAP_XSTRING(bdb_db_open) ": %s\n",
                            cr->msg, 0, 0 );
                     goto fail;
              }

              if( !BER_BVISNULL( &bdb->bi_db_crypt_key )) {
                     rc = db->bdi_db->set_flags( db->bdi_db, DB_ENCRYPT );
                     if ( rc ) {
                            snprintf(cr->msg, sizeof(cr->msg),
                                   "database \"%s\": db set_flags(DB_ENCRYPT)(%s) failed: %s (%d).",
                                   be->be_suffix[0].bv_val, 
                                   bdb->bi_dbenv_home, db_strerror(rc), rc );
                            Debug( LDAP_DEBUG_ANY,
                                   LDAP_XSTRING(bdb_db_open) ": %s\n",
                                   cr->msg, 0, 0 );
                            goto fail;
                     }
              }

              if( bdb->bi_flags & BDB_CHKSUM ) {
                     rc = db->bdi_db->set_flags( db->bdi_db, DB_CHKSUM );
                     if ( rc ) {
                            snprintf(cr->msg, sizeof(cr->msg),
                                   "database \"%s\": db set_flags(DB_CHKSUM)(%s) failed: %s (%d).",
                                   be->be_suffix[0].bv_val, 
                                   bdb->bi_dbenv_home, db_strerror(rc), rc );
                            Debug( LDAP_DEBUG_ANY,
                                   LDAP_XSTRING(bdb_db_open) ": %s\n",
                                   cr->msg, 0, 0 );
                            goto fail;
                     }
              }

              rc = bdb_db_findsize( bdb, (struct berval *)&bdbi_databases[i].name );

              if( i == BDB_ID2ENTRY ) {
                     if ( !rc ) rc = BDB_ID2ENTRY_PAGESIZE;
                     rc = db->bdi_db->set_pagesize( db->bdi_db, rc );

                     if ( slapMode & SLAP_TOOL_MODE )
                            db->bdi_db->mpf->set_priority( db->bdi_db->mpf,
                                   DB_PRIORITY_VERY_LOW );

                     if ( slapMode & SLAP_TOOL_READMAIN ) {
                            flags |= DB_RDONLY;
                     } else {
                            flags |= DB_CREATE;
                     }
              } else {
                     /* Use FS default size if not configured */
                     if ( rc )
                            rc = db->bdi_db->set_pagesize( db->bdi_db, rc );

                     rc = db->bdi_db->set_flags( db->bdi_db, 
                            DB_DUP | DB_DUPSORT );
#ifndef BDB_HIER
                     if ( slapMode & SLAP_TOOL_READONLY ) {
                            flags |= DB_RDONLY;
                     } else {
                            flags |= DB_CREATE;
                     }
#else
                     rc = db->bdi_db->set_dup_compare( db->bdi_db,
                            bdb_dup_compare );
                     if ( slapMode & (SLAP_TOOL_READONLY|SLAP_TOOL_READMAIN) ) {
                            flags |= DB_RDONLY;
                     } else {
                            flags |= DB_CREATE;
                     }
#endif
              }

#ifdef HAVE_EBCDIC
              strcpy( path, bdbi_databases[i].file );
              __atoe( path );
              rc = DB_OPEN( db->bdi_db,
                     path,
              /*     bdbi_databases[i].name, */ NULL,
                     bdbi_databases[i].type,
                     bdbi_databases[i].flags | flags,
                     bdb->bi_dbenv_mode );
#else
              rc = DB_OPEN( db->bdi_db,
                     bdbi_databases[i].file,
              /*     bdbi_databases[i].name, */ NULL,
                     bdbi_databases[i].type,
                     bdbi_databases[i].flags | flags,
                     bdb->bi_dbenv_mode );
#endif

              if ( rc != 0 ) {
                     snprintf( cr->msg, sizeof(cr->msg), "database \"%s\": "
                            "db_open(%s/%s) failed: %s (%d).", 
                            be->be_suffix[0].bv_val, 
                            bdb->bi_dbenv_home, bdbi_databases[i].file,
                            db_strerror(rc), rc );
                     Debug( LDAP_DEBUG_ANY,
                            LDAP_XSTRING(bdb_db_open) ": %s\n",
                            cr->msg, 0, 0 );
                     db->bdi_db->close( db->bdi_db, 0 );
                     goto fail;
              }

              flags &= ~(DB_CREATE | DB_RDONLY);
              db->bdi_name = bdbi_databases[i].name;
              bdb->bi_databases[i] = db;
       }

       bdb->bi_databases[i] = NULL;
       bdb->bi_ndatabases = i;

       /* get nextid */
       rc = bdb_last_id( be, NULL );
       if( rc != 0 ) {
              snprintf( cr->msg, sizeof(cr->msg), "database \"%s\": "
                     "last_id(%s) failed: %s (%d).",
                     be->be_suffix[0].bv_val, bdb->bi_dbenv_home,
                     db_strerror(rc), rc );
              Debug( LDAP_DEBUG_ANY,
                     LDAP_XSTRING(bdb_db_open) ": %s\n",
                     cr->msg, 0, 0 );
              goto fail;
       }

       if ( !quick ) {
              TXN_BEGIN(bdb->bi_dbenv, NULL, &bdb->bi_cache.c_txn, DB_READ_COMMITTED | DB_TXN_NOWAIT);
       }

       entry_prealloc( bdb->bi_cache.c_maxsize );
       attr_prealloc( bdb->bi_cache.c_maxsize * 20 );

       /* setup for empty-DN contexts */
       if ( BER_BVISEMPTY( &be->be_nsuffix[0] )) {
              rc = bdb_id2entry( be, NULL, 0, &e );
       }
       if ( !e ) {
              struct berval gluebv = BER_BVC("glue");
              Operation op = {0};
              Opheader ohdr = {0};
              e = entry_alloc();
              e->e_id = 0;
              ber_dupbv( &e->e_name, (struct berval *)&slap_empty_bv );
              ber_dupbv( &e->e_nname, (struct berval *)&slap_empty_bv );
              attr_merge_one( e, slap_schema.si_ad_objectClass,
                     &gluebv, NULL );
              attr_merge_one( e, slap_schema.si_ad_structuralObjectClass,
                     &gluebv, NULL );
              op.o_hdr = &ohdr;
              op.o_bd = be;
              op.ora_e = e;
              op.o_dn = be->be_rootdn;
              op.o_ndn = be->be_rootndn;
              slap_add_opattrs( &op, NULL, NULL, 0, 0 );
       }
       e->e_ocflags = SLAP_OC_GLUE|SLAP_OC__END;
       e->e_private = &bdb->bi_cache.c_dntree;
       bdb->bi_cache.c_dntree.bei_e = e;

       /* monitor setup */
       rc = bdb_monitor_db_open( be );
       if ( rc != 0 ) {
              goto fail;
       }

       bdb->bi_flags |= BDB_IS_OPEN;

       return 0;

fail:
       bdb_db_close( be, NULL );
       return rc;
}

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Variable Documentation

struct bdbi_database bdbi_databases[] [static]