/* Find a db/key pair in the IDL cache. If ids is non-NULL,
* copy the cached IDL into it, otherwise just return the status.
*/
int
bdb_idl_cache_get(
struct bdb_info *bdb,
DB *db,
DBT *key,
ID *ids )
{
bdb_idl_cache_entry_t idl_tmp;
bdb_idl_cache_entry_t *matched_idl_entry;
int rc = LDAP_NO_SUCH_OBJECT;
DBT2bv( key, &idl_tmp.kstr );
idl_tmp.db = db;
ldap_pvt_thread_rdwr_rlock( &bdb->bi_idl_tree_rwlock );
matched_idl_entry = avl_find( bdb->bi_idl_tree, &idl_tmp,
bdb_idl_entry_cmp );
if ( matched_idl_entry != NULL ) {
if ( matched_idl_entry->idl && ids )
BDB_IDL_CPY( ids, matched_idl_entry->idl );
matched_idl_entry->idl_flags |= CACHE_ENTRY_REFERENCED;
if ( matched_idl_entry->idl )
rc = LDAP_SUCCESS;
else
rc = DB_NOTFOUND;
}
ldap_pvt_thread_rdwr_runlock( &bdb->bi_idl_tree_rwlock );
return rc;
}
void
bdb_idl_cache_del_id(
struct bdb_info *bdb,
DB *db,
DBT *key,
ID id )
{
bdb_idl_cache_entry_t *cache_entry, idl_tmp;
DBT2bv( key, &idl_tmp.kstr );
idl_tmp.db = db;
ldap_pvt_thread_rdwr_wlock( &bdb->bi_idl_tree_rwlock );
cache_entry = avl_find( bdb->bi_idl_tree, &idl_tmp,
bdb_idl_entry_cmp );
if ( cache_entry != NULL ) {
bdb_idl_delete( cache_entry->idl, id );
if ( cache_entry->idl[0] == 0 ) {
if ( avl_delete( &bdb->bi_idl_tree, (caddr_t) cache_entry,
bdb_idl_entry_cmp ) == NULL ) {
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_cache_del: "
"AVL delete failed\n",
0, 0, 0 );
}
--bdb->bi_idl_cache_size;
ldap_pvt_thread_mutex_lock( &bdb->bi_idl_tree_lrulock );
IDL_LRU_DELETE( bdb, cache_entry );
ldap_pvt_thread_mutex_unlock( &bdb->bi_idl_tree_lrulock );
free( cache_entry->kstr.bv_val );
free( cache_entry->idl );
free( cache_entry );
}
}
ldap_pvt_thread_rdwr_wunlock( &bdb->bi_idl_tree_rwlock );
}
void
bdb_idl_cache_add_id(
struct bdb_info *bdb,
DB *db,
DBT *key,
ID id )
{
bdb_idl_cache_entry_t *cache_entry, idl_tmp;
DBT2bv( key, &idl_tmp.kstr );
idl_tmp.db = db;
ldap_pvt_thread_rdwr_wlock( &bdb->bi_idl_tree_rwlock );
cache_entry = avl_find( bdb->bi_idl_tree, &idl_tmp,
bdb_idl_entry_cmp );
if ( cache_entry != NULL ) {
if ( !BDB_IDL_IS_RANGE( cache_entry->idl ) &&
cache_entry->idl[0] < BDB_IDL_DB_MAX ) {
size_t s = BDB_IDL_SIZEOF( cache_entry->idl ) + sizeof(ID);
cache_entry->idl = ch_realloc( cache_entry->idl, s );
}
bdb_idl_insert( cache_entry->idl, id );
}
ldap_pvt_thread_rdwr_wunlock( &bdb->bi_idl_tree_rwlock );
}
void
bdb_idl_cache_put(
struct bdb_info *bdb,
DB *db,
DBT *key,
ID *ids,
int rc )
{
bdb_idl_cache_entry_t idl_tmp;
bdb_idl_cache_entry_t *ee, *eprev;
if ( rc == DB_NOTFOUND || BDB_IDL_IS_ZERO( ids ))
return;
DBT2bv( key, &idl_tmp.kstr );
ee = (bdb_idl_cache_entry_t *) ch_malloc(
sizeof( bdb_idl_cache_entry_t ) );
ee->db = db;
ee->idl = (ID*) ch_malloc( BDB_IDL_SIZEOF ( ids ) );
BDB_IDL_CPY( ee->idl, ids );
ee->idl_lru_prev = NULL;
ee->idl_lru_next = NULL;
ee->idl_flags = 0;
ber_dupbv( &ee->kstr, &idl_tmp.kstr );
ldap_pvt_thread_rdwr_wlock( &bdb->bi_idl_tree_rwlock );
if ( avl_insert( &bdb->bi_idl_tree, (caddr_t) ee,
bdb_idl_entry_cmp, avl_dup_error ))
{
ch_free( ee->kstr.bv_val );
ch_free( ee->idl );
ch_free( ee );
ldap_pvt_thread_rdwr_wunlock( &bdb->bi_idl_tree_rwlock );
return;
}
ldap_pvt_thread_mutex_lock( &bdb->bi_idl_tree_lrulock );
/* LRU_ADD */
if ( bdb->bi_idl_lru_head ) {
assert( bdb->bi_idl_lru_tail != NULL );
assert( bdb->bi_idl_lru_head->idl_lru_prev != NULL );
assert( bdb->bi_idl_lru_head->idl_lru_next != NULL );
ee->idl_lru_next = bdb->bi_idl_lru_head;
ee->idl_lru_prev = bdb->bi_idl_lru_head->idl_lru_prev;
bdb->bi_idl_lru_head->idl_lru_prev->idl_lru_next = ee;
bdb->bi_idl_lru_head->idl_lru_prev = ee;
} else {
ee->idl_lru_next = ee->idl_lru_prev = ee;
bdb->bi_idl_lru_tail = ee;
}
bdb->bi_idl_lru_head = ee;
if ( bdb->bi_idl_cache_size >= bdb->bi_idl_cache_max_size ) {
int i;
eprev = bdb->bi_idl_lru_tail;
for ( i = 0; (ee = eprev) != NULL && i < 10; i++ ) {
eprev = ee->idl_lru_prev;
if ( eprev == ee ) {
eprev = NULL;
}
if ( ee->idl_flags & CACHE_ENTRY_REFERENCED ) {
ee->idl_flags ^= CACHE_ENTRY_REFERENCED;
continue;
}
if ( avl_delete( &bdb->bi_idl_tree, (caddr_t) ee,
bdb_idl_entry_cmp ) == NULL ) {
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_cache_put: "
"AVL delete failed\n",
0, 0, 0 );
}
IDL_LRU_DELETE( bdb, ee );
i++;
--bdb->bi_idl_cache_size;
ch_free( ee->kstr.bv_val );
ch_free( ee->idl );
ch_free( ee );
}
bdb->bi_idl_lru_tail = eprev;
assert( bdb->bi_idl_lru_tail != NULL
|| bdb->bi_idl_lru_head == NULL );
}
bdb->bi_idl_cache_size++;
ldap_pvt_thread_mutex_unlock( &bdb->bi_idl_tree_lrulock );
ldap_pvt_thread_rdwr_wunlock( &bdb->bi_idl_tree_rwlock );
}
int bdb_tool_idl_add(
BackendDB *be,
DB *db,
DB_TXN *txn,
DBT *key,
ID id )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
bdb_tool_idl_cache *ic, itmp;
bdb_tool_idl_cache_entry *ice;
int rc;
if ( !bdb->bi_idl_cache_max_size )
return bdb_idl_insert_key( be, db, txn, key, id );
DBT2bv( key, &itmp.kstr );
ic = avl_find( (Avlnode *)db->app_private, &itmp, bdb_tool_idl_cmp );
/* No entry yet, create one */
if ( !ic ) {
DBC *curs;
DBT data;
ID nid;
int rc;
ic = ch_malloc( sizeof( bdb_tool_idl_cache ) + itmp.kstr.bv_len );
ic->kstr.bv_len = itmp.kstr.bv_len;
ic->kstr.bv_val = (char *)(ic+1);
AC_MEMCPY( ic->kstr.bv_val, itmp.kstr.bv_val, ic->kstr.bv_len );
ic->head = ic->tail = NULL;
ic->last = 0;
ic->count = 0;
avl_insert( (Avlnode **)&db->app_private, ic, bdb_tool_idl_cmp,
avl_dup_error );
/* load existing key count here */
rc = db->cursor( db, NULL, &curs, 0 );
if ( rc ) return rc;
data.ulen = sizeof( ID );
data.flags = DB_DBT_USERMEM;
data.data = &nid;
rc = curs->c_get( curs, key, &data, DB_SET );
if ( rc == 0 ) {
if ( nid == 0 ) {
ic->count = BDB_IDL_DB_SIZE+1;
} else {
db_recno_t count;
curs->c_count( curs, &count, 0 );
ic->count = count;
BDB_DISK2ID( &nid, &ic->first );
}
}
curs->c_close( curs );
}
/* are we a range already? */
if ( ic->count > BDB_IDL_DB_SIZE ) {
ic->last = id;
return 0;
/* Are we at the limit, and converting to a range? */
} else if ( ic->count == BDB_IDL_DB_SIZE ) {
int n;
for ( ice = ic->head, n=0; ice; ice = ice->next, n++ )
/* counting */ ;
if ( n ) {
ldap_pvt_thread_mutex_lock( &bdb->bi_idl_tree_lrulock );
ic->tail->next = bdb_tool_idl_free_list;
bdb_tool_idl_free_list = ic->head;
bdb->bi_idl_cache_size -= n;
ldap_pvt_thread_mutex_unlock( &bdb->bi_idl_tree_lrulock );
}
ic->head = ic->tail = NULL;
ic->last = id;
ic->count++;
return 0;
}
/* No free block, create that too */
if ( !ic->tail || ( ic->count & (IDBLOCK-1)) == 0) {
ice = NULL;
ldap_pvt_thread_mutex_lock( &bdb->bi_idl_tree_lrulock );
if ( bdb->bi_idl_cache_size >= bdb->bi_idl_cache_max_size ) {
ldap_pvt_thread_mutex_unlock( &bdb->bi_idl_tree_lrulock );
rc = bdb_tool_idl_flush_db( db, ic );
if ( rc )
return rc;
avl_insert( (Avlnode **)&db->app_private, ic, bdb_tool_idl_cmp,
avl_dup_error );
ldap_pvt_thread_mutex_lock( &bdb->bi_idl_tree_lrulock );
}
bdb->bi_idl_cache_size++;
if ( bdb_tool_idl_free_list ) {
ice = bdb_tool_idl_free_list;
bdb_tool_idl_free_list = ice->next;
}
ldap_pvt_thread_mutex_unlock( &bdb->bi_idl_tree_lrulock );
if ( !ice ) {
ice = ch_malloc( sizeof( bdb_tool_idl_cache_entry ));
}
memset( ice, 0, sizeof( *ice ));
if ( !ic->head ) {
ic->head = ice;
} else {
ic->tail->next = ice;
}
ic->tail = ice;
if ( !ic->count )
ic->first = id;
}
ice = ic->tail;
ice->ids[ ic->count & (IDBLOCK-1) ] = id;
ic->count++;
return 0;
}
int
bdb_idl_delete_key(
BackendDB *be,
DB *db,
DB_TXN *tid,
DBT *key,
ID id )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
int rc;
DBT data;
DBC *cursor;
ID lo, hi, tmp;
char *err;
{
char buf[16];
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ARGS,
"bdb_idl_delete_key: %lx %s\n",
(long) id, bdb_show_key( key, buf ), 0 );
#else
Debug( LDAP_DEBUG_ARGS,
"bdb_idl_delete_key: %lx %s\n",
(long) id, bdb_show_key( key, buf ), 0 );
#endif
}
assert( id != NOID );
#ifdef SLAP_IDL_CACHE
if ( bdb->bi_idl_cache_max_size ) {
bdb_idl_cache_entry_t *matched_idl_entry, idl_tmp;
DBT2bv( key, &idl_tmp.kstr );
idl_tmp.db = db;
ldap_pvt_thread_mutex_lock( &bdb->bi_idl_tree_mutex );
matched_idl_entry = avl_find( bdb->bi_idl_tree, &idl_tmp,
bdb_idl_entry_cmp );
if ( matched_idl_entry != NULL ) {
if ( avl_delete( &bdb->bi_idl_tree, (caddr_t) matched_idl_entry,
bdb_idl_entry_cmp ) == NULL ) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_fetch_key: AVL delete failed\n",
0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"AVL delete failed\n",
0, 0, 0 );
#endif
}
--bdb->bi_idl_cache_size;
IDL_LRU_DELETE( bdb, matched_idl_entry );
free( matched_idl_entry->kstr.bv_val );
free( matched_idl_entry->idl );
free( matched_idl_entry );
}
ldap_pvt_thread_mutex_unlock( &bdb->bi_idl_tree_mutex );
}
#endif
DBTzero( &data );
data.data = &tmp;
data.size = sizeof( id );
data.ulen = data.size;
data.flags = DB_DBT_USERMEM;
rc = db->cursor( db, tid, &cursor, bdb->bi_db_opflags );
if ( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_delete_key: cursor failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_delete_key: "
"cursor failed: %s (%d)\n", db_strerror(rc), rc, 0 );
#endif
return rc;
}
/* Fetch the first data item for this key, to see if it
* exists and if it's a range.
*/
rc = cursor->c_get( cursor, key, &data, DB_SET | DB_RMW );
err = "c_get";
if ( rc == 0 ) {
if ( tmp != 0 ) {
/* Not a range, just delete it */
if (tmp != id) {
/* position to correct item */
tmp = id;
rc = cursor->c_get( cursor, key, &data,
DB_GET_BOTH | DB_RMW );
if ( rc != 0 ) {
err = "c_get id";
goto fail;
}
}
rc = cursor->c_del( cursor, 0 );
if ( rc != 0 ) {
err = "c_del id";
goto fail;
}
} else {
/* It's a range, see if we need to rewrite
* the boundaries
*/
data.data = &lo;
rc = cursor->c_get( cursor, key, &data, DB_NEXT_DUP );
if ( rc != 0 ) {
err = "c_get lo";
goto fail;
}
data.data = &hi;
rc = cursor->c_get( cursor, key, &data, DB_NEXT_DUP );
if ( rc != 0 ) {
err = "c_get hi";
goto fail;
}
if ( id == lo || id == hi ) {
if ( id == lo ) {
id++;
lo = id;
} else if ( id == hi ) {
id--;
hi = id;
}
if ( lo >= hi ) {
/* The range has collapsed... */
rc = db->del( db, tid, key, 0 );
if ( rc != 0 ) {
err = "del";
goto fail;
}
} else {
if ( id == lo ) {
/* reposition on lo slot */
data.data = &lo;
cursor->c_get( cursor, key, &data, DB_PREV );
lo = id;
}
rc = cursor->c_del( cursor, 0 );
if ( rc != 0 ) {
err = "c_del";
goto fail;
}
}
if ( lo <= hi ) {
data.data = &id;
rc = cursor->c_put( cursor, key, &data, DB_KEYFIRST );
if ( rc != 0 ) {
err = "c_put lo/hi";
goto fail;
}
}
}
}
} else {
/* initial c_get failed, nothing was done */
fail:
if ( rc != DB_NOTFOUND ) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_delete_key: %s failed: %s (%d)\n",
err, db_strerror(rc), rc );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_delete_key: "
"%s failed: %s (%d)\n", err, db_strerror(rc), rc );
#endif
}
cursor->c_close( cursor );
return rc;
}
rc = cursor->c_close( cursor );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR, "bdb_idl_delete_key: c_close failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"=> bdb_idl_delete_key: c_close failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
}
return rc;
}
int
bdb_idl_insert_key(
BackendDB *be,
DB *db,
DB_TXN *tid,
DBT *key,
ID id )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
int rc;
DBT data;
DBC *cursor;
ID lo, hi, tmp;
char *err;
{
char buf[16];
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ARGS,
"bdb_idl_insert_key: %lx %s\n",
(long) id, bdb_show_key( key, buf ), 0 );
#else
Debug( LDAP_DEBUG_ARGS,
"bdb_idl_insert_key: %lx %s\n",
(long) id, bdb_show_key( key, buf ), 0 );
#endif
}
assert( id != NOID );
#ifdef SLAP_IDL_CACHE
if ( bdb->bi_idl_cache_size ) {
bdb_idl_cache_entry_t *matched_idl_entry, idl_tmp;
DBT2bv( key, &idl_tmp.kstr );
idl_tmp.db = db;
ldap_pvt_thread_mutex_lock( &bdb->bi_idl_tree_mutex );
matched_idl_entry = avl_find( bdb->bi_idl_tree, &idl_tmp,
bdb_idl_entry_cmp );
if ( matched_idl_entry != NULL ) {
if ( avl_delete( &bdb->bi_idl_tree, (caddr_t) matched_idl_entry,
bdb_idl_entry_cmp ) == NULL ) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_fetch_key: AVL delete failed\n",
0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"AVL delete failed\n",
0, 0, 0 );
#endif
}
--bdb->bi_idl_cache_size;
IDL_LRU_DELETE( bdb, matched_idl_entry );
free( matched_idl_entry->kstr.bv_val );
free( matched_idl_entry->idl );
free( matched_idl_entry );
}
ldap_pvt_thread_mutex_unlock( &bdb->bi_idl_tree_mutex );
}
#endif
DBTzero( &data );
data.size = sizeof( ID );
data.ulen = data.size;
data.flags = DB_DBT_USERMEM;
rc = db->cursor( db, tid, &cursor, bdb->bi_db_opflags );
if ( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_insert_key: cursor failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_insert_key: "
"cursor failed: %s (%d)\n", db_strerror(rc), rc, 0 );
#endif
return rc;
}
data.data = &tmp;
/* Fetch the first data item for this key, to see if it
* exists and if it's a range.
*/
rc = cursor->c_get( cursor, key, &data, DB_SET | DB_RMW );
err = "c_get";
if ( rc == 0 ) {
if ( tmp != 0 ) {
/* not a range, count the number of items */
db_recno_t count;
rc = cursor->c_count( cursor, &count, 0 );
if ( rc != 0 ) {
err = "c_count";
goto fail;
}
if ( count >= BDB_IDL_DB_MAX ) {
/* No room, convert to a range */
DBT key2 = *key;
key2.dlen = key2.ulen;
key2.flags |= DB_DBT_PARTIAL;
lo = tmp;
data.data = &hi;
rc = cursor->c_get( cursor, &key2, &data, DB_NEXT_NODUP );
if ( rc != 0 && rc != DB_NOTFOUND ) {
err = "c_get next_nodup";
goto fail;
}
if ( rc == DB_NOTFOUND ) {
rc = cursor->c_get( cursor, key, &data, DB_LAST );
if ( rc != 0 ) {
err = "c_get last";
goto fail;
}
} else {
rc = cursor->c_get( cursor, key, &data, DB_PREV );
if ( rc != 0 ) {
err = "c_get prev";
goto fail;
}
}
if ( id < lo )
lo = id;
else if ( id > hi )
hi = id;
rc = db->del( db, tid, key, 0 );
if ( rc != 0 ) {
err = "del";
goto fail;
}
data.data = &id;
id = 0;
rc = cursor->c_put( cursor, key, &data, DB_KEYFIRST );
if ( rc != 0 ) {
err = "c_put 0";
goto fail;
}
id = lo;
rc = cursor->c_put( cursor, key, &data, DB_KEYLAST );
if ( rc != 0 ) {
err = "c_put lo";
goto fail;
}
id = hi;
rc = cursor->c_put( cursor, key, &data, DB_KEYLAST );
if ( rc != 0 ) {
err = "c_put hi";
goto fail;
}
} else {
/* There's room, just store it */
goto put1;
}
} else {
/* It's a range, see if we need to rewrite
* the boundaries
*/
hi = id;
data.data = &lo;
rc = cursor->c_get( cursor, key, &data, DB_NEXT_DUP );
if ( rc != 0 ) {
err = "c_get lo";
goto fail;
}
if ( id > lo ) {
data.data = &hi;
rc = cursor->c_get( cursor, key, &data, DB_NEXT_DUP );
if ( rc != 0 ) {
err = "c_get hi";
goto fail;
}
}
if ( id < lo || id > hi ) {
/* Delete the current lo/hi */
rc = cursor->c_del( cursor, 0 );
if ( rc != 0 ) {
err = "c_del";
goto fail;
}
data.data = &id;
rc = cursor->c_put( cursor, key, &data, DB_KEYFIRST );
if ( rc != 0 ) {
err = "c_put lo/hi";
goto fail;
}
}
}
} else if ( rc == DB_NOTFOUND ) {
put1: data.data = &id;
rc = cursor->c_put( cursor, key, &data, DB_NODUPDATA );
/* Don't worry if it's already there */
if ( rc != 0 && rc != DB_KEYEXIST ) {
err = "c_put id";
goto fail;
}
} else {
/* initial c_get failed, nothing was done */
fail:
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_insert_key: %s failed: %s (%d)\n",
err, db_strerror(rc), rc );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_insert_key: "
"%s failed: %s (%d)\n", err, db_strerror(rc), rc );
#endif
cursor->c_close( cursor );
return rc;
}
rc = cursor->c_close( cursor );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_insert_key: c_close failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_insert_key: "
"c_close failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
}
return rc;
}
int
bdb_idl_fetch_key(
BackendDB *be,
DB *db,
DB_TXN *tid,
DBT *key,
ID *ids )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
int rc;
DBT data;
DBC *cursor;
ID *i;
void *ptr;
size_t len;
int rc2;
int flags = bdb->bi_db_opflags | DB_MULTIPLE;
#ifdef SLAP_IDL_CACHE
bdb_idl_cache_entry_t idl_tmp;
#endif
/* If using BerkeleyDB 4.0, the buf must be large enough to
* grab the entire IDL in one get(), otherwise BDB will leak
* resources on subsequent get's. We can safely call get()
* twice - once for the data, and once to get the DB_NOTFOUND
* result meaning there's no more data. See ITS#2040 for details.
* This bug is fixed in BDB 4.1 so a smaller buffer will work if
* stack space is too limited.
*
* configure now requires Berkeley DB 4.1.
*/
#if (DB_VERSION_MAJOR == 4) && (DB_VERSION_MINOR == 0)
# define BDB_ENOUGH 5
#else
# define BDB_ENOUGH 1
#endif
ID buf[BDB_IDL_DB_SIZE*BDB_ENOUGH];
char keybuf[16];
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ARGS,
"bdb_idl_fetch_key: %s\n",
bdb_show_key( key, keybuf ), 0, 0 );
#else
Debug( LDAP_DEBUG_ARGS,
"bdb_idl_fetch_key: %s\n",
bdb_show_key( key, keybuf ), 0, 0 );
#endif
assert( ids != NULL );
#ifdef SLAP_IDL_CACHE
if ( bdb->bi_idl_cache_max_size ) {
bdb_idl_cache_entry_t *matched_idl_entry;
DBT2bv( key, &idl_tmp.kstr );
idl_tmp.db = db;
ldap_pvt_thread_mutex_lock( &bdb->bi_idl_tree_mutex );
matched_idl_entry = avl_find( bdb->bi_idl_tree, &idl_tmp,
bdb_idl_entry_cmp );
if ( matched_idl_entry != NULL ) {
BDB_IDL_CPY( ids, matched_idl_entry->idl );
IDL_LRU_DELETE( bdb, matched_idl_entry );
IDL_LRU_ADD( bdb, matched_idl_entry );
ldap_pvt_thread_mutex_unlock( &bdb->bi_idl_tree_mutex );
return LDAP_SUCCESS;
}
ldap_pvt_thread_mutex_unlock( &bdb->bi_idl_tree_mutex );
}
#endif
DBTzero( &data );
data.data = buf;
data.ulen = sizeof(buf);
data.flags = DB_DBT_USERMEM;
if ( tid ) flags |= DB_RMW;
rc = db->cursor( db, tid, &cursor, bdb->bi_db_opflags );
if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_fetch_key: cursor failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"cursor failed: %s (%d)\n", db_strerror(rc), rc, 0 );
#endif
return rc;
}
rc = cursor->c_get( cursor, key, &data, flags | DB_SET );
if (rc == 0) {
i = ids;
while (rc == 0) {
u_int8_t *j;
DB_MULTIPLE_INIT( ptr, &data );
while (ptr) {
DB_MULTIPLE_NEXT(ptr, &data, j, len);
if (j) {
++i;
AC_MEMCPY( i, j, sizeof(ID) );
}
}
rc = cursor->c_get( cursor, key, &data, flags | DB_NEXT_DUP );
}
if ( rc == DB_NOTFOUND ) rc = 0;
ids[0] = i - ids;
/* On disk, a range is denoted by 0 in the first element */
if (ids[1] == 0) {
if (ids[0] != BDB_IDL_RANGE_SIZE) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"=> bdb_idl_fetch_key: range size mismatch: "
"expected %ld, got %ld\n",
BDB_IDL_RANGE_SIZE, ids[0], 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"range size mismatch: expected %d, got %ld\n",
BDB_IDL_RANGE_SIZE, ids[0], 0 );
#endif
cursor->c_close( cursor );
return -1;
}
BDB_IDL_RANGE( ids, ids[2], ids[3] );
}
data.size = BDB_IDL_SIZEOF(ids);
}
rc2 = cursor->c_close( cursor );
if (rc2) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_fetch_key: close failed: %s (%d)\n",
db_strerror(rc2), rc2, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"close failed: %s (%d)\n", db_strerror(rc2), rc2, 0 );
#endif
return rc2;
}
if( rc == DB_NOTFOUND ) {
return rc;
} else if( rc != 0 ) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_fetch_key: get failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"get failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
#endif
return rc;
} else if ( data.size == 0 || data.size % sizeof( ID ) ) {
/* size not multiple of ID size */
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_fetch_key: odd size: expected %ld multiple, got %ld\n",
(long) sizeof( ID ), (long) data.size, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"odd size: expected %ld multiple, got %ld\n",
(long) sizeof( ID ), (long) data.size, 0 );
#endif
return -1;
} else if ( data.size != BDB_IDL_SIZEOF(ids) ) {
/* size mismatch */
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_fetch_key: get size mismatch: expected %ld, got %ld\n",
(long) ((1 + ids[0]) * sizeof( ID )), (long) data.size, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"get size mismatch: expected %ld, got %ld\n",
(long) ((1 + ids[0]) * sizeof( ID )), (long) data.size, 0 );
#endif
return -1;
}
#ifdef SLAP_IDL_CACHE
if ( bdb->bi_idl_cache_max_size ) {
bdb_idl_cache_entry_t *ee;
ee = (bdb_idl_cache_entry_t *) ch_malloc(
sizeof( bdb_idl_cache_entry_t ) );
ee->db = db;
ee->idl = (ID*) ch_malloc( BDB_IDL_SIZEOF ( ids ) );
ee->idl_lru_prev = NULL;
ee->idl_lru_next = NULL;
BDB_IDL_CPY( ee->idl, ids );
ber_dupbv( &ee->kstr, &idl_tmp.kstr );
ldap_pvt_thread_mutex_lock( &bdb->bi_idl_tree_mutex );
if ( avl_insert( &bdb->bi_idl_tree, (caddr_t) ee,
bdb_idl_entry_cmp, avl_dup_error ))
{
ch_free( ee->kstr.bv_val );
ch_free( ee->idl );
ch_free( ee );
} else {
IDL_LRU_ADD( bdb, ee );
if ( ++bdb->bi_idl_cache_size > bdb->bi_idl_cache_max_size ) {
int i = 0;
while ( bdb->bi_idl_lru_tail != NULL && i < 10 ) {
ee = bdb->bi_idl_lru_tail;
if ( avl_delete( &bdb->bi_idl_tree, (caddr_t) ee,
bdb_idl_entry_cmp ) == NULL ) {
#ifdef NEW_LOGGING
LDAP_LOG( INDEX, ERR,
"bdb_idl_fetch_key: AVL delete failed\n",
0, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"AVL delete failed\n",
0, 0, 0 );
#endif
}
IDL_LRU_DELETE( bdb, ee );
i++;
--bdb->bi_idl_cache_size;
ch_free( ee->kstr.bv_val );
ch_free( ee->idl );
ch_free( ee );
}
}
}
ldap_pvt_thread_mutex_unlock( &bdb->bi_idl_tree_mutex );
}
#endif
return rc;
}
int bdb_id2entry_rw(
BackendDB *be,
DB_TXN *tid,
ID id,
Entry **e,
int rw,
u_int32_t locker,
DB_LOCK *lock )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
DB *db = bdb->bi_id2entry->bdi_db;
DBT key, data;
struct berval bv;
int rc = 0, ret = 0;
*e = NULL;
DBTzero( &key );
key.data = (char *) &id;
key.size = sizeof(ID);
DBTzero( &data );
data.flags = DB_DBT_MALLOC;
if ((*e = bdb_cache_find_entry_id(bdb->bi_dbenv, &bdb->bi_cache, id, rw, locker, lock)) != NULL) {
return 0;
}
/* fetch it */
rc = db->get( db, tid, &key, &data, bdb->bi_db_opflags | ( rw ? DB_RMW : 0 ));
if( rc != 0 ) {
return rc;
}
DBT2bv( &data, &bv );
rc = entry_decode( &bv, e );
if( rc == 0 ) {
(*e)->e_id = id;
} else {
/* only free on error. On success, the entry was
* decoded in place.
*/
ch_free( data.data );
}
if ( rc == 0 ) {
#ifdef BDB_HIER
bdb_fix_dn(be, id, *e);
#endif
ret = bdb_cache_add_entry_rw( bdb->bi_dbenv,
&bdb->bi_cache, *e, rw, locker, lock);
while ( ret == 1 || ret == -1 ) {
Entry *ee;
int add_loop_cnt = 0;
if ( (*e)->e_private != NULL ) {
free ((*e)->e_private);
}
(*e)->e_private = NULL;
if ( (ee = bdb_cache_find_entry_id
(bdb->bi_dbenv, &bdb->bi_cache, id, rw, locker, lock) ) != NULL) {
bdb_entry_return ( *e );
*e = ee;
return 0;
}
if ( ++add_loop_cnt == BDB_MAX_ADD_LOOP ) {
bdb_entry_return ( *e );
*e = NULL;
return LDAP_BUSY;
}
}
if ( ret != 0 ) {
if ( (*e)->e_private != NULL )
free ( (*e)->e_private );
bdb_entry_return( *e );
*e = NULL;
}
rc = ret;
}
if (rc == 0) {
bdb_cache_entry_commit(*e);
}
return rc;
}