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, nid, nlo, nhi;
char *err;
{
char buf[16];
Debug( LDAP_DEBUG_ARGS,
"bdb_idl_delete_key: %lx %s\n",
(long) id, bdb_show_key( key, buf ), 0 );
}
assert( id != NOID );
if ( bdb->bi_idl_cache_size ) {
bdb_idl_cache_del( bdb, db, key );
}
BDB_ID2DISK( id, &nid );
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 ) {
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_delete_key: "
"cursor failed: %s (%d)\n", db_strerror(rc), rc, 0 );
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 );
err = "c_get";
if ( rc == 0 ) {
if ( tmp != 0 ) {
/* Not a range, just delete it */
if (tmp != nid) {
/* position to correct item */
tmp = nid;
rc = cursor->c_get( cursor, key, &data, DB_GET_BOTH );
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 = &nlo;
rc = cursor->c_get( cursor, key, &data, DB_NEXT_DUP );
if ( rc != 0 ) {
err = "c_get lo";
goto fail;
}
BDB_DISK2ID( &nlo, &lo );
data.data = &nhi;
rc = cursor->c_get( cursor, key, &data, DB_NEXT_DUP );
if ( rc != 0 ) {
err = "c_get hi";
goto fail;
}
BDB_DISK2ID( &nhi, &hi );
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 = &nlo;
cursor->c_get( cursor, key, &data, DB_PREV );
}
rc = cursor->c_del( cursor, 0 );
if ( rc != 0 ) {
err = "c_del";
goto fail;
}
}
if ( lo <= hi ) {
BDB_ID2DISK( id, &nid );
data.data = &nid;
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 ) {
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_delete_key: "
"%s failed: %s (%d)\n", err, db_strerror(rc), rc );
}
cursor->c_close( cursor );
return rc;
}
rc = cursor->c_close( cursor );
if( rc != 0 ) {
Debug( LDAP_DEBUG_ANY,
"=> bdb_idl_delete_key: c_close failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
}
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, nlo, nhi, nid;
char *err;
{
char buf[16];
Debug( LDAP_DEBUG_ARGS,
"bdb_idl_insert_key: %lx %s\n",
(long) id, bdb_show_key( key, buf ), 0 );
}
assert( id != NOID );
DBTzero( &data );
data.size = sizeof( ID );
data.ulen = data.size;
data.flags = DB_DBT_USERMEM;
BDB_ID2DISK( id, &nid );
rc = db->cursor( db, tid, &cursor, bdb->bi_db_opflags );
if ( rc != 0 ) {
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_insert_key: "
"cursor failed: %s (%d)\n", db_strerror(rc), rc, 0 );
return rc;
}
data.data = &nlo;
/* 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 );
err = "c_get";
if ( rc == 0 ) {
if ( nlo != 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;
db_recno_t i;
key2.dlen = key2.ulen;
key2.flags |= DB_DBT_PARTIAL;
BDB_DISK2ID( &nlo, &lo );
data.data = &nhi;
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;
}
}
BDB_DISK2ID( &nhi, &hi );
/* Update hi/lo if needed, then delete all the items
* between lo and hi
*/
if ( id < lo ) {
lo = id;
nlo = nid;
} else if ( id > hi ) {
hi = id;
nhi = nid;
}
data.data = &nid;
/* Don't fetch anything, just position cursor */
data.flags = DB_DBT_USERMEM | DB_DBT_PARTIAL;
data.dlen = data.ulen = 0;
rc = cursor->c_get( cursor, key, &data, DB_SET );
if ( rc != 0 ) {
err = "c_get 2";
goto fail;
}
rc = cursor->c_del( cursor, 0 );
if ( rc != 0 ) {
err = "c_del range1";
goto fail;
}
/* Delete all the records */
for ( i=1; i<count; i++ ) {
rc = cursor->c_get( cursor, &key2, &data, DB_NEXT_DUP );
if ( rc != 0 ) {
err = "c_get next_dup";
goto fail;
}
rc = cursor->c_del( cursor, 0 );
if ( rc != 0 ) {
err = "c_del range";
goto fail;
}
}
/* Store the range marker */
data.size = data.ulen = sizeof(ID);
data.flags = DB_DBT_USERMEM;
nid = 0;
rc = cursor->c_put( cursor, key, &data, DB_KEYFIRST );
if ( rc != 0 ) {
err = "c_put range";
goto fail;
}
nid = nlo;
rc = cursor->c_put( cursor, key, &data, DB_KEYLAST );
if ( rc != 0 ) {
err = "c_put lo";
goto fail;
}
nid = nhi;
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 = &nlo;
rc = cursor->c_get( cursor, key, &data, DB_NEXT_DUP );
if ( rc != 0 ) {
err = "c_get lo";
goto fail;
}
BDB_DISK2ID( &nlo, &lo );
if ( id > lo ) {
data.data = &nhi;
rc = cursor->c_get( cursor, key, &data, DB_NEXT_DUP );
if ( rc != 0 ) {
err = "c_get hi";
goto fail;
}
BDB_DISK2ID( &nhi, &hi );
}
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 = &nid;
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 = &nid;
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:
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_insert_key: "
"%s failed: %s (%d)\n", err, db_strerror(rc), rc );
cursor->c_close( cursor );
return rc;
}
/* If key was added (didn't already exist) and using IDL cache,
* update key in IDL cache.
*/
if ( !rc && bdb->bi_idl_cache_max_size ) {
bdb_idl_cache_add_id( bdb, db, key, id );
}
rc = cursor->c_close( cursor );
if( rc != 0 ) {
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_insert_key: "
"c_close failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
}
return rc;
}
int
bdb_idl_fetch_key(
BackendDB *be,
DB *db,
DB_TXN *txn,
DBT *key,
ID *ids,
DBC **saved_cursor,
int get_flag )
{
struct bdb_info *bdb = (struct bdb_info *) be->be_private;
int rc;
DBT data, key2, *kptr;
DBC *cursor;
ID *i;
void *ptr;
size_t len;
int rc2;
int flags = bdb->bi_db_opflags | DB_MULTIPLE;
int opflag;
/* 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_FULL < 0x04010000
# define BDB_ENOUGH 5
#else
/* We sometimes test with tiny IDLs, and BDB always wants buffers
* that are at least one page in size.
*/
# if BDB_IDL_DB_SIZE < 4096
# define BDB_ENOUGH 2048
# else
# define BDB_ENOUGH 1
# endif
#endif
ID buf[BDB_IDL_DB_SIZE*BDB_ENOUGH];
char keybuf[16];
Debug( LDAP_DEBUG_ARGS,
"bdb_idl_fetch_key: %s\n",
bdb_show_key( key, keybuf ), 0, 0 );
assert( ids != NULL );
if ( saved_cursor && *saved_cursor ) {
opflag = DB_NEXT;
} else if ( get_flag == LDAP_FILTER_GE ) {
opflag = DB_SET_RANGE;
} else if ( get_flag == LDAP_FILTER_LE ) {
opflag = DB_FIRST;
} else {
opflag = DB_SET;
}
/* only non-range lookups can use the IDL cache */
if ( bdb->bi_idl_cache_size && opflag == DB_SET ) {
rc = bdb_idl_cache_get( bdb, db, key, ids );
if ( rc != LDAP_NO_SUCH_OBJECT ) return rc;
}
DBTzero( &data );
data.data = buf;
data.ulen = sizeof(buf);
data.flags = DB_DBT_USERMEM;
/* If we're not reusing an existing cursor, get a new one */
if( opflag != DB_NEXT ) {
rc = db->cursor( db, txn, &cursor, bdb->bi_db_opflags );
if( rc != 0 ) {
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"cursor failed: %s (%d)\n", db_strerror(rc), rc, 0 );
return rc;
}
} else {
cursor = *saved_cursor;
}
/* If this is a LE lookup, save original key so we can determine
* when to stop. If this is a GE lookup, save the key since it
* will be overwritten.
*/
if ( get_flag == LDAP_FILTER_LE || get_flag == LDAP_FILTER_GE ) {
DBTzero( &key2 );
key2.flags = DB_DBT_USERMEM;
key2.ulen = sizeof(keybuf);
key2.data = keybuf;
key2.size = key->size;
AC_MEMCPY( keybuf, key->data, key->size );
kptr = &key2;
} else {
kptr = key;
}
len = key->size;
rc = cursor->c_get( cursor, kptr, &data, flags | opflag );
/* skip presence key on range inequality lookups */
while (rc == 0 && kptr->size != len) {
rc = cursor->c_get( cursor, kptr, &data, flags | DB_NEXT_NODUP );
}
/* If we're doing a LE compare and the new key is greater than
* our search key, we're done
*/
if (rc == 0 && get_flag == LDAP_FILTER_LE && memcmp( kptr->data,
key->data, key->size ) > 0 ) {
rc = DB_NOTFOUND;
}
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;
BDB_DISK2ID( j, i );
}
}
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) {
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"range size mismatch: expected %d, got %ld\n",
BDB_IDL_RANGE_SIZE, ids[0], 0 );
cursor->c_close( cursor );
return -1;
}
BDB_IDL_RANGE( ids, ids[2], ids[3] );
}
data.size = BDB_IDL_SIZEOF(ids);
}
if ( saved_cursor && rc == 0 ) {
if ( !*saved_cursor )
*saved_cursor = cursor;
rc2 = 0;
}
else
rc2 = cursor->c_close( cursor );
if (rc2) {
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"close failed: %s (%d)\n", db_strerror(rc2), rc2, 0 );
return rc2;
}
if( rc == DB_NOTFOUND ) {
return rc;
} else if( rc != 0 ) {
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"get failed: %s (%d)\n",
db_strerror(rc), rc, 0 );
return rc;
} else if ( data.size == 0 || data.size % sizeof( ID ) ) {
/* size not multiple of ID size */
Debug( LDAP_DEBUG_ANY, "=> bdb_idl_fetch_key: "
"odd size: expected %ld multiple, got %ld\n",
(long) sizeof( ID ), (long) data.size, 0 );
return -1;
} else if ( data.size != BDB_IDL_SIZEOF(ids) ) {
/* size mismatch */
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 );
return -1;
}
if ( bdb->bi_idl_cache_max_size ) {
bdb_idl_cache_put( bdb, db, key, ids, rc );
}
return rc;
}
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;
}
