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openldap  2.4.31
Defines | Functions
dbcache.c File Reference
#include "portable.h"
#include <stdio.h>
#include <ac/errno.h>
#include <ac/socket.h>
#include <ac/string.h>
#include <ac/time.h>
#include <sys/stat.h>
#include "slap.h"
#include "back-bdb.h"
#include "lutil_hash.h"

Go to the source code of this file.

Defines

#define BDB_INDEXTYPE   DB_BTREE

Functions

int bdb_db_findsize (struct bdb_info *bdb, struct berval *name)
int bdb_db_cache (Backend *be, struct berval *name, DB **dbout)

Define Documentation

#define BDB_INDEXTYPE   DB_BTREE

Definition at line 57 of file dbcache.c.


Function Documentation

int bdb_db_cache ( Backend be,
struct berval name,
DB **  dbout 
)

Definition at line 84 of file dbcache.c.

{
       int i, flags;
       int rc;
       struct bdb_info *bdb = (struct bdb_info *) be->be_private;
       struct bdb_db_info *db;
       char *file;

       *dbout = NULL;

       for( i=BDB_NDB; i < bdb->bi_ndatabases; i++ ) {
              if( !ber_bvcmp( &bdb->bi_databases[i]->bdi_name, name) ) {
                     *dbout = bdb->bi_databases[i]->bdi_db;
                     return 0;
              }
       }

       ldap_pvt_thread_mutex_lock( &bdb->bi_database_mutex );

       /* check again! may have been added by another thread */
       for( i=BDB_NDB; i < bdb->bi_ndatabases; i++ ) {
              if( !ber_bvcmp( &bdb->bi_databases[i]->bdi_name, name) ) {
                     *dbout = bdb->bi_databases[i]->bdi_db;
                     ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
                     return 0;
              }
       }

       if( i >= BDB_INDICES ) {
              ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
              return -1;
       }

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

       ber_dupbv( &db->bdi_name, name );

       rc = db_create( &db->bdi_db, bdb->bi_dbenv, 0 );
       if( rc != 0 ) {
              Debug( LDAP_DEBUG_ANY,
                     "bdb_db_cache: db_create(%s) failed: %s (%d)\n",
                     bdb->bi_dbenv_home, db_strerror(rc), rc );
              ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
              ch_free( db );
              return rc;
       }

       if( !BER_BVISNULL( &bdb->bi_db_crypt_key )) {
              rc = db->bdi_db->set_flags( db->bdi_db, DB_ENCRYPT );
              if ( rc ) {
                     Debug( LDAP_DEBUG_ANY,
                            "bdb_db_cache: db set_flags(DB_ENCRYPT)(%s) failed: %s (%d)\n",
                            bdb->bi_dbenv_home, db_strerror(rc), rc );
                     ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
                     db->bdi_db->close( db->bdi_db, 0 );
                     ch_free( db );
                     return rc;
              }
       }

       if( bdb->bi_flags & BDB_CHKSUM ) {
              rc = db->bdi_db->set_flags( db->bdi_db, DB_CHKSUM );
              if ( rc ) {
                     Debug( LDAP_DEBUG_ANY,
                            "bdb_db_cache: db set_flags(DB_CHKSUM)(%s) failed: %s (%d)\n",
                            bdb->bi_dbenv_home, db_strerror(rc), rc );
                     ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
                     db->bdi_db->close( db->bdi_db, 0 );
                     ch_free( db );
                     return rc;
              }
       }

       /* If no explicit size set, use the FS default */
       flags = bdb_db_findsize( bdb, name );
       if ( flags )
              rc = db->bdi_db->set_pagesize( db->bdi_db, flags );

#ifdef BDB_INDEX_USE_HASH
       rc = db->bdi_db->set_h_hash( db->bdi_db, bdb_db_hash );
#endif
       rc = db->bdi_db->set_flags( db->bdi_db, DB_DUP | DB_DUPSORT );

       file = ch_malloc( db->bdi_name.bv_len + sizeof(BDB_SUFFIX) );
       strcpy( file, db->bdi_name.bv_val );
       strcpy( file+db->bdi_name.bv_len, BDB_SUFFIX );

#ifdef HAVE_EBCDIC
       __atoe( file );
#endif
       flags = DB_CREATE | DB_THREAD;
#ifdef DB_AUTO_COMMIT
       if ( !( slapMode & SLAP_TOOL_QUICK ))
              flags |= DB_AUTO_COMMIT;
#endif
       /* Cannot Truncate when Transactions are in use */
       if ( (slapMode & (SLAP_TOOL_QUICK|SLAP_TRUNCATE_MODE)) ==
              (SLAP_TOOL_QUICK|SLAP_TRUNCATE_MODE))
                     flags |= DB_TRUNCATE;

       rc = DB_OPEN( db->bdi_db,
              file, NULL /* name */,
              BDB_INDEXTYPE, bdb->bi_db_opflags | flags, bdb->bi_dbenv_mode );

       ch_free( file );

       if( rc != 0 ) {
              Debug( LDAP_DEBUG_ANY,
                     "bdb_db_cache: db_open(%s) failed: %s (%d)\n",
                     name->bv_val, db_strerror(rc), rc );
              ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
              return rc;
       }

       bdb->bi_databases[i] = db;
       bdb->bi_ndatabases = i+1;

       *dbout = db->bdi_db;

       ldap_pvt_thread_mutex_unlock( &bdb->bi_database_mutex );
       return 0;
}

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int bdb_db_findsize ( struct bdb_info bdb,
struct berval name 
)

Definition at line 62 of file dbcache.c.

{
       struct bdb_db_pgsize *bp;
       int rc;

       for ( bp = bdb->bi_pagesizes; bp; bp=bp->bdp_next ) {
              rc = strncmp( name->bv_val, bp->bdp_name.bv_val, name->bv_len );
              if ( !rc ) {
                     if ( name->bv_len == bp->bdp_name.bv_len )
                            return bp->bdp_size;
                     if ( name->bv_len < bp->bdp_name.bv_len &&
                            bp->bdp_name.bv_val[name->bv_len] == '.' )
                            return bp->bdp_size;
              }
       }
       return 0;
}