Clone an rpmdb module from bsddb3 (rpmdb/*.py need work).

CVS patchset: 5458
CVS date: 2002/06/02 20:50:48

1 files changed, 4253 insertions, 0 deletions

diff --git a/python/_rpmdb.c b/python/_rpmdb.c
new file mode 100644
index 000000000..8df27b9ae
--- /dev/null
+++ b/python/_rpmdb.c
@@ -0,0 +1,4253 @@
+/*----------------------------------------------------------------------
+  Copyright (c) 1999-2001, Digital Creations, Fredericksburg, VA, USA
+  and Andrew Kuchling. All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+  modification, are permitted provided that the following conditions are
+  met:
+
+    o Redistributions of source code must retain the above copyright
+      notice, this list of conditions, and the disclaimer that follows.
+
+    o Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions, and the following disclaimer in
+      the documentation and/or other materials provided with the
+      distribution.
+
+    o Neither the name of Digital Creations nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+  THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS AND CONTRIBUTORS *AS
+  IS* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+  TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+  PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL DIGITAL
+  CREATIONS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+  OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+  USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+  DAMAGE.
+------------------------------------------------------------------------*/
+
+
+/*
+ * Handwritten code to wrap version 3.x of the Berkeley DB library,
+ * written to replace a SWIG-generated file.
+ *
+ * This module was started by Andrew Kuchling to remove the dependency
+ * on SWIG in a package by Gregory P. Smith <greg@electricrain.com> who
+ * based his work on a similar package by Robin Dunn <robin@alldunn.com>
+ * which wrapped Berkeley DB 2.7.x.
+ *
+ * Development of this module has now returned full circle back to
+ * Robin Dunn who is working in behalf of Digital Creations to complete
+ * the wrapping of the DB 3.x API and to build a solid unit test suite.
+ *
+ * This module contains 5 types:
+ *
+ * DB           (Database)
+ * DBCursor     (Database Cursor)
+ * DBEnv        (database environment)
+ * DBTxn        (An explicit database transaction)
+ * DBLock       (A lock handle)
+ *
+ */
+
+/* --------------------------------------------------------------------- */
+
+/*
+ * Portions of this module, associated unit tests and build scripts are the
+ * result of a contract with The Written Word (http://thewrittenword.com/)
+ * Many thanks go out to them for causing me to raise the bar on quality and
+ * functionality, resulting in a better bsddb3 package for all of us to use.
+ *
+ * --Robin
+ *
+ * All I've done is steal the bsddb3-3.3.1 code, and changed "bsddb3" to
+ * "rpmdb" and "_db" to "_rpmdb" in order to avoid symbol conflicts.
+ *
+ * bsddb3 is Nice Stuff, I couldn't possibly do a better job.
+ *
+ * --Jeff
+ *
+ */
+
+/* --------------------------------------------------------------------- */
+
+#include <Python.h>
+#include <db.h>
+
+/* --------------------------------------------------------------------- */
+/* Various macro definitions */
+
+/* 40 = 4.0, 33 = 3.3; this will break if the second number is > 9 */
+#define DBVER (DB_VERSION_MAJOR * 10 + DB_VERSION_MINOR)
+
+#define PY_BSDDB_VERSION "3.3.1"
+
+static char *rcs_id = "$Id: _rpmdb.c,v 1.1 2002/06/02 20:50:49 jbj Exp $";
+
+
+#ifdef WITH_THREAD
+
+/* These are for when calling Python --> C */
+#define MYDB_BEGIN_ALLOW_THREADS Py_BEGIN_ALLOW_THREADS;
+#define MYDB_END_ALLOW_THREADS Py_END_ALLOW_THREADS;
+
+/* and these are for calling C --> Python */
+static PyInterpreterState* _db_interpreterState = NULL;
+#define MYDB_BEGIN_BLOCK_THREADS {                              \
+        PyThreadState* prevState;                               \
+        PyThreadState* newState;                                \
+        PyEval_AcquireLock();                                   \
+        newState  = PyThreadState_New(_db_interpreterState);    \
+        prevState = PyThreadState_Swap(newState);
+
+#define MYDB_END_BLOCK_THREADS                                  \
+        newState = PyThreadState_Swap(prevState);               \
+        PyThreadState_Clear(newState);                          \
+        PyEval_ReleaseLock();                                   \
+        PyThreadState_Delete(newState);                         \
+        }
+
+#else
+
+#define MYDB_BEGIN_ALLOW_THREADS
+#define MYDB_END_ALLOW_THREADS
+#define MYDB_BEGIN_BLOCK_THREADS
+#define MYDB_END_BLOCK_THREADS
+
+#endif
+
+
+/* What is the default behaviour when DB->get or DBCursor->get returns a
+   DB_NOTFOUND error?  Return None or raise an exception? */
+#define GET_RETURNS_NONE_DEFAULT 1
+
+
+/* Should DB_INCOMPLETE be turned into a warning or an exception? */
+#define INCOMPLETE_IS_WARNING 1
+
+/* --------------------------------------------------------------------- */
+/* Exceptions */
+
+static PyObject* DBError;               /* Base class, all others derive from this */
+static PyObject* DBKeyEmptyError;       /* DB_KEYEMPTY */
+static PyObject* DBKeyExistError;       /* DB_KEYEXIST */
+static PyObject* DBLockDeadlockError;   /* DB_LOCK_DEADLOCK */
+static PyObject* DBLockNotGrantedError; /* DB_LOCK_NOTGRANTED */
+static PyObject* DBNotFoundError;       /* DB_NOTFOUND: also derives from KeyError */
+static PyObject* DBOldVersionError;     /* DB_OLD_VERSION */
+static PyObject* DBRunRecoveryError;    /* DB_RUNRECOVERY */
+static PyObject* DBVerifyBadError;      /* DB_VERIFY_BAD */
+static PyObject* DBNoServerError;       /* DB_NOSERVER */
+static PyObject* DBNoServerHomeError;   /* DB_NOSERVER_HOME */
+static PyObject* DBNoServerIDError;     /* DB_NOSERVER_ID */
+#if (DBVER >= 33)
+static PyObject* DBPageNotFoundError;   /* DB_PAGE_NOTFOUND */
+static PyObject* DBSecondaryBadError;   /* DB_SECONDARY_BAD */
+#endif
+
+#if !INCOMPLETE_IS_WARNING
+static PyObject* DBIncompleteError;     /* DB_INCOMPLETE */
+#endif
+
+static PyObject* DBInvalidArgError;     /* EINVAL */
+static PyObject* DBAccessError;         /* EACCES */
+static PyObject* DBNoSpaceError;        /* ENOSPC */
+static PyObject* DBNoMemoryError;       /* ENOMEM */
+static PyObject* DBAgainError;          /* EAGAIN */
+static PyObject* DBBusyError;           /* EBUSY  */
+static PyObject* DBFileExistsError;     /* EEXIST */
+static PyObject* DBNoSuchFileError;     /* ENOENT */
+static PyObject* DBPermissionsError;    /* EPERM  */
+
+
+
+/* --------------------------------------------------------------------- */
+/* Structure definitions */
+
+typedef struct {
+    PyObject_HEAD
+    DB_ENV*     db_env;
+    int         flags;             /* saved flags from open() */
+    int         closed;
+    int         getReturnsNone;
+} DBEnvObject;
+
+
+typedef struct {
+    PyObject_HEAD
+    DB*             db;
+    DBEnvObject*    myenvobj;  /* PyObject containing the DB_ENV */
+    int             flags;     /* saved flags from open() */
+    int             setflags;  /* saved flags from set_flags() */
+    int             haveStat;
+    int             getReturnsNone;
+#if (DBVER >= 33)
+    PyObject*       associateCallback;
+    int             primaryDBType;
+#endif
+} DBObject;
+
+
+typedef struct {
+    PyObject_HEAD
+    DBC*            dbc;
+    DBObject*       mydb;
+} DBCursorObject;
+
+
+typedef struct {
+    PyObject_HEAD
+    DB_TXN*         txn;
+} DBTxnObject;
+
+
+typedef struct {
+    PyObject_HEAD
+    DB_LOCK         lock;
+} DBLockObject;
+
+
+
+staticforward PyTypeObject DB_Type, DBCursor_Type, DBEnv_Type, DBTxn_Type, DBLock_Type;
+
+#define DBObject_Check(v)           ((v)->ob_type == &DB_Type)
+#define DBCursorObject_Check(v)     ((v)->ob_type == &DBCursor_Type)
+#define DBEnvObject_Check(v)        ((v)->ob_type == &DBEnv_Type)
+#define DBTxnObject_Check(v)        ((v)->ob_type == &DBTxn_Type)
+#define DBLockObject_Check(v)       ((v)->ob_type == &DBLock_Type)
+
+
+/* --------------------------------------------------------------------- */
+/* Utility macros and functions */
+
+#define RETURN_IF_ERR()          \
+    if (makeDBError(err)) {      \
+        return NULL;             \
+    }
+
+#define RETURN_NONE()  Py_INCREF(Py_None); return Py_None;
+
+#define CHECK_DB_NOT_CLOSED(dbobj)                              \
+    if (dbobj->db == NULL) {                                    \
+        PyErr_SetObject(DBError, Py_BuildValue("(is)", 0,       \
+                                "DB object has been closed"));  \
+        return NULL;                                            \
+    }
+
+#define CHECK_ENV_NOT_CLOSED(env)                               \
+    if (env->db_env == NULL) {                                  \
+        PyErr_SetObject(DBError, Py_BuildValue("(is)", 0,       \
+                                 "DBEnv object has been closed"));\
+        return NULL;                                            \
+    }
+
+#define CHECK_CURSOR_NOT_CLOSED(curs) \
+    if (curs->dbc == NULL) {                                  \
+        PyErr_SetObject(DBError, Py_BuildValue("(is)", 0,       \
+                                 "DBCursor object has been closed"));\
+        return NULL;                                            \
+    }
+
+
+
+#define CHECK_DBFLAG(mydb, flag)    (((mydb)->flags & (flag)) || \
+                                     (((mydb)->myenvobj != NULL) && ((mydb)->myenvobj->flags & (flag))))
+
+#define CLEAR_DBT(dbt)              (memset(&(dbt), 0, sizeof(dbt)))
+
+#define FREE_DBT(dbt)               if ((dbt.flags & (DB_DBT_MALLOC|DB_DBT_REALLOC)) && \
+                                         dbt.data != NULL) { free(dbt.data); }
+
+
+static int makeDBError(int err);
+
+
+/* Return the access method type of the DBObject */
+static int _DB_get_type(DBObject* self)
+{
+#if (DBVER >= 33)
+    DBTYPE type;
+    int err;
+    err = self->db->get_type(self->db, &type);
+    if (makeDBError(err)) {
+        return -1;
+    }
+    return type;
+#else
+    return self->db->get_type(self->db);
+#endif
+}
+
+
+/* Create a DBT structure (containing key and data values) from Python
+   strings.  Returns 1 on success, 0 on an error. */
+static int make_dbt(PyObject* obj, DBT* dbt)
+{
+    CLEAR_DBT(*dbt);
+    if (obj == Py_None) {
+        /* no need to do anything, the structure has already been zeroed */
+    }
+    else if (!PyArg_Parse(obj, "s#", &dbt->data, &dbt->size)) {
+        PyErr_SetString(PyExc_TypeError,
+                        "Key and Data values must be of type string or None.");
+        return 0;
+    }
+    return 1;
+}
+
+
+/* Recno and Queue DBs can have integer keys.  This function figures out
+   what's been given, verifies that it's allowed, and then makes the DBT.
+
+   Caller should call FREE_DBT(key) when done. */
+static int make_key_dbt(DBObject* self, PyObject* keyobj, DBT* key, int* pflags)
+{
+    db_recno_t recno;
+    int type;
+
+    CLEAR_DBT(*key);
+    if (keyobj == Py_None) {  /* TODO: is None really okay for keys? */
+        /* no need to do anything, the structure has already been zeroed */
+    }
+
+    else if (PyString_Check(keyobj)) {
+        /* verify access method type */
+        type = _DB_get_type(self);
+        if (type == -1)
+            return 0;
+        if (type == DB_RECNO || type == DB_QUEUE) {
+            PyErr_SetString(PyExc_TypeError, "String keys not allowed for Recno and Queue DB's");
+            return 0;
+        }
+
+        key->data = PyString_AS_STRING(keyobj);
+        key->size = PyString_GET_SIZE(keyobj);
+    }
+
+    else if (PyInt_Check(keyobj)) {
+        /* verify access method type */
+        type = _DB_get_type(self);
+        if (type == -1)
+            return 0;
+        if (type == DB_BTREE && pflags != NULL) {
+            /* if BTREE then an Integer key is allowed with the DB_SET_RECNO flag */
+            *pflags |= DB_SET_RECNO;
+        }
+        else if (type != DB_RECNO && type != DB_QUEUE) {
+            PyErr_SetString(PyExc_TypeError, "Integer keys only allowed for Recno and Queue DB's");
+            return 0;
+        }
+
+        /* Make a key out of the requested recno, use allocated space so DB will
+           be able to realloc room for the real key if needed. */
+        recno = PyInt_AS_LONG(keyobj);
+        key->data = malloc(sizeof(db_recno_t));
+        if (key->data == NULL) {
+            PyErr_SetString(PyExc_MemoryError, "Key memory allocation failed");
+            return 0;
+        }
+        key->ulen = key->size = sizeof(db_recno_t);
+        memcpy(key->data, &recno, sizeof(db_recno_t));
+        key->flags = DB_DBT_REALLOC;
+    }
+    else {
+        PyErr_Format(PyExc_TypeError,
+                     "String or Integer object expected for key, %s found",
+                     keyobj->ob_type->tp_name);
+        return 0;
+    }
+
+    return 1;
+}
+
+
+/* Add partial record access to an existing DBT data struct.
+   If dlen and doff are set, then the DB_DBT_PARTIAL flag will be set
+   and the data storage/retrieval will be done using dlen and doff. */
+static int add_partial_dbt(DBT* d, int dlen, int doff) {
+    /* if neither were set we do nothing (-1 is the default value) */
+    if ((dlen == -1) && (doff == -1)) {
+        return 1;
+    }
+
+    if ((dlen < 0) || (doff < 0)) {
+        PyErr_SetString(PyExc_TypeError, "dlen and doff must both be >= 0");
+        return 0;
+    }
+
+    d->flags = d->flags | DB_DBT_PARTIAL;
+    d->dlen = (unsigned int) dlen;
+    d->doff = (unsigned int) doff;
+    return 1;
+}
+
+
+/* Callback used to save away more information about errors from the DB library. */
+static char _db_errmsg[1024];
+static void _db_errorCallback(const char* prefix, char* msg)
+{
+    strcpy(_db_errmsg, msg);
+}
+
+
+/* make a nice exception object to raise for errors. */
+static int makeDBError(int err)
+{
+    char errTxt[2048];  /* really big, just in case... */
+    PyObject* errObj = NULL;
+    int exceptionRaised = 0;
+
+    switch (err) {
+        case 0:                     /* successful, no error */      break;
+
+        case DB_INCOMPLETE:
+#if INCOMPLETE_IS_WARNING
+            strcpy(errTxt, db_strerror(err));
+            if (_db_errmsg[0]) {
+                strcat(errTxt, " -- ");
+                strcat(errTxt, _db_errmsg);
+                _db_errmsg[0] = 0;
+            }
+#if PYTHON_API_VERSION >= 1010 /* if Python 2.1 or better use warning framework */
+            exceptionRaised = PyErr_Warn(PyExc_RuntimeWarning, errTxt);
+#else
+            fprintf(stderr, errTxt);
+            fprintf(stderr, "\n");
+#endif
+
+#else  /* do an exception instead */
+        errObj = DBIncompleteError;
+#endif
+        break;
+
+        case DB_KEYEMPTY:           errObj = DBKeyEmptyError;       break;
+        case DB_KEYEXIST:           errObj = DBKeyExistError;       break;
+        case DB_LOCK_DEADLOCK:      errObj = DBLockDeadlockError;   break;
+        case DB_LOCK_NOTGRANTED:    errObj = DBLockNotGrantedError; break;
+        case DB_NOTFOUND:           errObj = DBNotFoundError;       break;
+        case DB_OLD_VERSION:        errObj = DBOldVersionError;     break;
+        case DB_RUNRECOVERY:        errObj = DBRunRecoveryError;    break;
+        case DB_VERIFY_BAD:         errObj = DBVerifyBadError;      break;
+        case DB_NOSERVER:           errObj = DBNoServerError;       break;
+        case DB_NOSERVER_HOME:      errObj = DBNoServerHomeError;   break;
+        case DB_NOSERVER_ID:        errObj = DBNoServerIDError;     break;
+#if (DBVER >= 33)
+        case DB_PAGE_NOTFOUND:      errObj = DBPageNotFoundError;   break;
+        case DB_SECONDARY_BAD:      errObj = DBSecondaryBadError;   break;
+#endif
+
+        case EINVAL:  errObj = DBInvalidArgError;   break;
+        case EACCES:  errObj = DBAccessError;       break;
+        case ENOSPC:  errObj = DBNoSpaceError;      break;
+        case ENOMEM:  errObj = DBNoMemoryError;     break;
+        case EAGAIN:  errObj = DBAgainError;        break;
+        case EBUSY :  errObj = DBBusyError;         break;
+        case EEXIST:  errObj = DBFileExistsError;   break;
+        case ENOENT:  errObj = DBNoSuchFileError;   break;
+        case EPERM :  errObj = DBPermissionsError;  break;
+
+        default:      errObj = DBError;             break;
+    }
+
+    if (errObj != NULL) {
+        strcpy(errTxt, db_strerror(err));
+        if (_db_errmsg[0]) {
+            strcat(errTxt, " -- ");
+            strcat(errTxt, _db_errmsg);
+            _db_errmsg[0] = 0;
+        }
+        PyErr_SetObject(errObj, Py_BuildValue("(is)", err, errTxt));
+    }
+
+    return ((errObj != NULL) || exceptionRaised);
+}
+
+
+
+/* set a type exception */
+static void makeTypeError(char* expected, PyObject* found)
+{
+    PyErr_Format(PyExc_TypeError, "Expected %s argument, %s found.",
+                 expected, found->ob_type->tp_name);
+}
+
+
+/* verify that an obj is either None or a DBTxn, and set the txn pointer */
+static int checkTxnObj(PyObject* txnobj, DB_TXN** txn)
+{
+    if (txnobj == Py_None || txnobj == NULL) {
+        *txn = NULL;
+        return 1;
+    }
+    if (DBTxnObject_Check(txnobj)) {
+        *txn = ((DBTxnObject*)txnobj)->txn;
+        return 1;
+    }
+    else
+        makeTypeError("DBTxn", txnobj);
+    return 0;
+}
+
+
+/* Delete a key from a database
+  Returns 0 on success, -1 on an error.  */
+static int _DB_delete(DBObject* self, DB_TXN *txn, DBT *key, int flags)
+{
+    int err;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->del(self->db, txn, key, 0);
+    MYDB_END_ALLOW_THREADS;
+    if (makeDBError(err)) {
+        return -1;
+    }
+    self->haveStat = 0;
+    return 0;
+}
+
+
+/* Store a key into a database
+   Returns 0 on success, -1 on an error.  */
+static int _DB_put(DBObject* self, DB_TXN *txn, DBT *key, DBT *data, int flags)
+{
+    int err;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->put(self->db, txn, key, data, flags);
+    MYDB_END_ALLOW_THREADS;
+    if (makeDBError(err)) {
+        return -1;
+    }
+    self->haveStat = 0;
+    return 0;
+}
+
+/* Get a key/data pair from a cursor */
+static PyObject* _DBCursor_get(DBCursorObject* self, int flags)
+{
+    int err;
+    PyObject* retval = NULL;
+    DBT key, data;
+
+    CLEAR_DBT(key);
+    CLEAR_DBT(data);
+    if (CHECK_DBFLAG(self->mydb, DB_THREAD)) {
+        /* Tell BerkeleyDB to malloc the return value (thread safe) */
+        data.flags = DB_DBT_MALLOC;
+        key.flags = DB_DBT_MALLOC;
+    }
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->dbc->c_get(self->dbc, &key, &data, flags);
+    MYDB_END_ALLOW_THREADS;
+
+    if ((err == DB_NOTFOUND) && self->mydb->getReturnsNone) {
+        Py_INCREF(Py_None);
+        retval = Py_None;
+    }
+    else if (makeDBError(err)) {
+        retval = NULL;
+    }
+    else {  /* otherwise, success! */
+
+        /* if Recno or Queue, return the key as an Int */
+        switch (_DB_get_type(self->mydb)) {
+        case -1:
+            retval = NULL;
+            break;
+
+        case DB_RECNO:
+        case DB_QUEUE:
+            retval = Py_BuildValue("is#", *((db_recno_t*)key.data),
+                                   data.data, data.size);
+            break;
+        case DB_HASH:
+        case DB_BTREE:
+        default:
+            retval = Py_BuildValue("s#s#", key.data, key.size,
+                                   data.data, data.size);
+            break;
+        }
+    }
+    if (!err) {
+        FREE_DBT(key);
+        FREE_DBT(data);
+    }
+    return retval;
+}
+
+
+/* add an integer to a dictionary using the given name as a key */
+static void _addIntToDict(PyObject* dict, char *name, int value)
+{
+    PyObject* v = PyInt_FromLong((long) value);
+    if (!v || PyDict_SetItemString(dict, name, v))
+        PyErr_Clear();
+
+    Py_XDECREF(v);
+}
+
+
+
+
+/* --------------------------------------------------------------------- */
+/* Allocators and deallocators */
+
+static DBObject*
+newDBObject(DBEnvObject* arg, int flags)
+{
+    DBObject* self;
+    DB_ENV* db_env = NULL;
+    int err;
+
+#if PYTHON_API_VERSION <= 1007
+    /* 1.5 compatibility */
+    self = PyObject_NEW(DBObject, &DB_Type);
+#else
+    self = PyObject_New(DBObject, &DB_Type);
+#endif
+
+    if (self == NULL)
+        return NULL;
+
+    self->haveStat = 0;
+    self->flags = 0;
+    self->setflags = 0;
+    self->myenvobj = NULL;
+#if (DBVER >= 33)
+    self->associateCallback = NULL;
+    self->primaryDBType = 0;
+#endif
+
+    /* keep a reference to our python DBEnv object */
+    if (arg) {
+        Py_INCREF(arg);
+        self->myenvobj = arg;
+        db_env = arg->db_env;
+    }
+
+    if (self->myenvobj)
+        self->getReturnsNone = self->myenvobj->getReturnsNone;
+    else
+        self->getReturnsNone = GET_RETURNS_NONE_DEFAULT;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = db_create(&self->db, db_env, flags);
+    self->db->set_errcall(self->db, _db_errorCallback);
+#if (DBVER >= 33)
+    self->db->app_private = (void*)self;
+#endif
+    MYDB_END_ALLOW_THREADS;
+    if (makeDBError(err)) {
+        if (self->myenvobj) {
+            Py_DECREF(self->myenvobj);
+            self->myenvobj = NULL;
+        }
+        self = NULL;
+    }
+    return self;
+}
+
+
+static void
+DB_dealloc(DBObject* self)
+{
+    if (self->db != NULL) {
+        MYDB_BEGIN_ALLOW_THREADS;
+        self->db->close(self->db, 0);
+        self->db = NULL;
+        MYDB_END_ALLOW_THREADS;
+    }
+    if (self->myenvobj) {
+        Py_DECREF(self->myenvobj);
+        self->myenvobj = NULL;
+    }
+#if (DBVER >= 33)
+    if (self->associateCallback != NULL) {
+        Py_DECREF(self->associateCallback);
+        self->associateCallback = NULL;
+    }
+#endif
+#if PYTHON_API_VERSION <= 1007
+    PyMem_DEL(self);
+#else
+    PyObject_Del(self);
+#endif
+}
+
+
+static DBCursorObject*
+newDBCursorObject(DBC* dbc, DBObject* db)
+{
+    DBCursorObject* self;
+#if PYTHON_API_VERSION <= 1007
+    self = PyObject_NEW(DBCursorObject, &DBCursor_Type);
+#else
+    self = PyObject_New(DBCursorObject, &DBCursor_Type);
+#endif
+    if (self == NULL)
+        return NULL;
+
+    self->dbc = dbc;
+    self->mydb = db;
+    Py_INCREF(self->mydb);
+    return self;
+}
+
+
+static void
+DBCursor_dealloc(DBCursorObject* self)
+{
+    int err;
+    if (self->dbc != NULL) {
+        MYDB_BEGIN_ALLOW_THREADS;
+        err = self->dbc->c_close(self->dbc);
+        self->dbc = NULL;
+        MYDB_END_ALLOW_THREADS;
+    }
+    Py_XDECREF( self->mydb );
+#if PYTHON_API_VERSION <= 1007
+    PyMem_DEL(self);
+#else
+    PyObject_Del(self);
+#endif
+}
+
+
+static DBEnvObject*
+newDBEnvObject(int flags)
+{
+    int err;
+    DBEnvObject* self;
+#if PYTHON_API_VERSION <= 1007
+    self = PyObject_NEW(DBEnvObject, &DBEnv_Type);
+#else
+    self = PyObject_New(DBEnvObject, &DBEnv_Type);
+#endif
+
+    if (self == NULL)
+        return NULL;
+
+    self->closed = 1;
+    self->flags = flags;
+    self->getReturnsNone = GET_RETURNS_NONE_DEFAULT;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = db_env_create(&self->db_env, flags);
+    MYDB_END_ALLOW_THREADS;
+    if (makeDBError(err)) {
+        self = NULL;
+    }
+    else {
+        self->db_env->set_errcall(self->db_env, _db_errorCallback);
+    }
+    return self;
+}
+
+
+static void
+DBEnv_dealloc(DBEnvObject* self)
+{
+    if (!self->closed) {
+        MYDB_BEGIN_ALLOW_THREADS;
+        self->db_env->close(self->db_env, 0);
+        MYDB_END_ALLOW_THREADS;
+    }
+#if PYTHON_API_VERSION <= 1007
+    PyMem_DEL(self);
+#else
+    PyObject_Del(self);
+#endif
+}
+
+
+static DBTxnObject*
+newDBTxnObject(DBEnvObject* myenv, DB_TXN *parent, int flags)
+{
+    int err;
+    DBTxnObject* self;
+
+#if PYTHON_API_VERSION <= 1007
+    self = PyObject_NEW(DBTxnObject, &DBTxn_Type);
+#else
+    self = PyObject_New(DBTxnObject, &DBTxn_Type);
+#endif
+    if (self == NULL)
+        return NULL;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    err = myenv->db_env->txn_begin(myenv->db_env, parent, &(self->txn), flags);
+#else
+    err = txn_begin(myenv->db_env, parent, &(self->txn), flags);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    if (makeDBError(err)) {
+        self = NULL;
+    }
+    return self;
+}
+
+
+static void
+DBTxn_dealloc(DBTxnObject* self)
+{
+    /* XXX nothing to do for transaction objects?!? */
+
+    /* TODO: if it hasn't been commited, should we abort it? */
+
+#if PYTHON_API_VERSION <= 1007
+    PyMem_DEL(self);
+#else
+    PyObject_Del(self);
+#endif
+}
+
+
+static DBLockObject*
+newDBLockObject(DBEnvObject* myenv, u_int32_t locker, DBT* obj,
+                db_lockmode_t lock_mode, int flags)
+{
+    int err;
+    DBLockObject* self;
+
+#if PYTHON_API_VERSION <= 1007
+    self = PyObject_NEW(DBLockObject, &DBLock_Type);
+#else
+    self = PyObject_New(DBLockObject, &DBLock_Type);
+#endif
+    if (self == NULL)
+        return NULL;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    err = myenv->db_env->lock_get(myenv->db_env, locker, flags, obj, lock_mode, &self->lock);
+#else
+    err = lock_get(myenv->db_env, locker, flags, obj, lock_mode, &self->lock);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    if (makeDBError(err)) {
+        self = NULL;
+    }
+
+    return self;
+}
+
+
+static void
+DBLock_dealloc(DBLockObject* self)
+{
+    /* TODO: if it hasn't been released, should we do it? */
+
+#if PYTHON_API_VERSION <= 1007
+    PyMem_DEL(self);
+#else
+    PyObject_Del(self);
+#endif
+}
+
+
+/* --------------------------------------------------------------------- */
+/* DB methods */
+
+static PyObject*
+DB_append(DBObject* self, PyObject* args)
+{
+    PyObject* txnobj = NULL;
+    PyObject* dataobj;
+    db_recno_t recno;
+    DBT key, data;
+    DB_TXN *txn = NULL;
+
+    if (!PyArg_ParseTuple(args, "O|O:append", &dataobj, &txnobj))
+        return NULL;
+
+    CHECK_DB_NOT_CLOSED(self);
+
+    /* make a dummy key out of a recno */
+    recno = 0;
+    CLEAR_DBT(key);
+    key.data = &recno;
+    key.size = sizeof(recno);
+    key.ulen = key.size;
+    key.flags = DB_DBT_USERMEM;
+
+    if (!make_dbt(dataobj, &data)) return NULL;
+    if (!checkTxnObj(txnobj, &txn)) return NULL;
+
+    if (-1 == _DB_put(self, txn, &key, &data, DB_APPEND))
+        return NULL;
+
+    return PyInt_FromLong(recno);
+}
+
+
+#if (DBVER >= 33)
+
+static int
+_db_associateCallback(DB* db, const DBT* priKey, const DBT* priData, DBT* secKey)
+{
+    int       retval = DB_DONOTINDEX;
+    DBObject* secondaryDB = (DBObject*)db->app_private;
+    PyObject* callback = secondaryDB->associateCallback;
+    int       type = secondaryDB->primaryDBType;
+    PyObject* key;
+    PyObject* data;
+    PyObject* args;
+    PyObject* result;
+
+
+    if (callback != NULL) {
+        MYDB_BEGIN_BLOCK_THREADS;
+
+        if (type == DB_RECNO || type == DB_QUEUE) {
+            key = PyInt_FromLong( *((db_recno_t*)priKey->data));
+        }
+        else {
+            key  = PyString_FromStringAndSize(priKey->data, priKey->size);
+        }
+        data = PyString_FromStringAndSize(priData->data, priData->size);
+        args = PyTuple_New(2);
+        PyTuple_SET_ITEM(args, 0, key);  /* steals reference */
+        PyTuple_SET_ITEM(args, 1, data); /* steals reference */
+
+        result = PyEval_CallObject(callback, args);
+
+        if (result == NULL) {
+            PyErr_Print();
+        }
+        else if (result == Py_None) {
+            retval = DB_DONOTINDEX;
+        }
+        else if (PyInt_Check(result)) {
+            retval = PyInt_AsLong(result);
+        }
+        else if (PyString_Check(result)) {
+            char* data;
+            int   size;
+
+            CLEAR_DBT(*secKey);
+#if PYTHON_API_VERSION <= 1007
+            /* 1.5 compatibility */
+            size = PyString_Size(result);
+            data = PyString_AsString(result);
+#else
+            PyString_AsStringAndSize(result, &data, &size);
+#endif
+            secKey->flags = DB_DBT_APPMALLOC;   /* DB will free */
+            secKey->data = malloc(size);        /* TODO, check this */
+            memcpy(secKey->data, data, size);
+            secKey->size = size;
+            retval = 0;
+        }
+        else {
+            PyErr_SetString(PyExc_TypeError,
+                            "DB associate callback should return DB_DONOTINDEX or a string.");
+            PyErr_Print();
+        }
+
+        Py_DECREF(args);
+        if (result) {
+            Py_DECREF(result);
+        }
+
+        MYDB_END_BLOCK_THREADS;
+    }
+    return retval;
+}
+
+
+static PyObject*
+DB_associate(DBObject* self, PyObject* args, PyObject* kwargs)
+{
+    int err, flags=0;
+    DBObject* secondaryDB;
+    PyObject* callback;
+    char* kwnames[] = {"secondaryDB", "callback", "flags", NULL};
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OO|i:associate", kwnames,
+                                     &secondaryDB, &callback, &flags))
+        return NULL;
+
+    CHECK_DB_NOT_CLOSED(self);
+    if (!DBObject_Check(secondaryDB)) {
+        makeTypeError("DB", (PyObject*)secondaryDB);
+        return NULL;
+    }
+    if (callback == Py_None) {
+        callback = NULL;
+    }
+    else if (!PyCallable_Check(callback)) {
+        makeTypeError("Callable", callback);
+        return NULL;
+    }
+
+    /* Save a reference to the callback in the secondary DB. */
+    if (self->associateCallback != NULL) {
+        Py_DECREF(self->associateCallback);
+    }
+    Py_INCREF(callback);
+    secondaryDB->associateCallback = callback;
+    secondaryDB->primaryDBType = _DB_get_type(self);
+
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->associate(self->db,
+                              secondaryDB->db,
+                              _db_associateCallback,
+                              flags);
+    MYDB_END_ALLOW_THREADS;
+
+    if (err) {
+        Py_DECREF(self->associateCallback);
+        self->associateCallback = NULL;
+        secondaryDB->primaryDBType = 0;
+    }
+
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+#endif
+
+
+static PyObject*
+DB_close(DBObject* self, PyObject* args)
+{
+    int err, flags=0;
+    if (!PyArg_ParseTuple(args,"|i:close", &flags))
+        return NULL;
+    if (self->db != NULL) {
+        MYDB_BEGIN_ALLOW_THREADS;
+        err = self->db->close(self->db, flags);
+        MYDB_END_ALLOW_THREADS;
+        self->db = NULL;
+        RETURN_IF_ERR();
+    }
+    RETURN_NONE();
+}
+
+
+#if (DBVER >= 32)
+static PyObject*
+_DB_consume(DBObject* self, PyObject* args, PyObject* kwargs, int consume_flag)
+{
+    int err, flags=0, type;
+    PyObject* txnobj = NULL;
+    PyObject* retval = NULL;
+    DBT key, data;
+    DB_TXN *txn = NULL;
+    char* kwnames[] = { "txn", "flags", NULL };
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|Oi:consume", kwnames,
+                                     &txnobj, &flags))
+        return NULL;
+
+    CHECK_DB_NOT_CLOSED(self);
+    type = _DB_get_type(self);
+    if (type == -1)
+        return NULL;
+    if (type != DB_QUEUE) {
+        PyErr_SetString(PyExc_TypeError, "Consume methods only allowed for Queue DB's");
+        return NULL;
+    }
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+
+    CLEAR_DBT(key);
+    CLEAR_DBT(data);
+    if (CHECK_DBFLAG(self, DB_THREAD)) {
+        /* Tell BerkeleyDB to malloc the return value (thread safe) */
+        data.flags = DB_DBT_MALLOC;
+        key.flags = DB_DBT_MALLOC;
+    }
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->get(self->db, txn, &key, &data, flags|consume_flag);
+    MYDB_END_ALLOW_THREADS;
+
+    if ((err == DB_NOTFOUND) && self->getReturnsNone) {
+        err = 0;
+        Py_INCREF(Py_None);
+        retval = Py_None;
+    }
+    else if (!err) {
+        retval = Py_BuildValue("s#s#", key.data, key.size, data.data, data.size);
+        FREE_DBT(key);
+        FREE_DBT(data);
+    }
+
+    RETURN_IF_ERR();
+    return retval;
+}
+
+static PyObject*
+DB_consume(DBObject* self, PyObject* args, PyObject* kwargs, int consume_flag)
+{
+    return _DB_consume(self, args, kwargs, DB_CONSUME);
+}
+
+static PyObject*
+DB_consume_wait(DBObject* self, PyObject* args, PyObject* kwargs, int consume_flag)
+{
+    return _DB_consume(self, args, kwargs, DB_CONSUME_WAIT);
+}
+#endif
+
+
+
+static PyObject*
+DB_cursor(DBObject* self, PyObject* args, PyObject* kwargs)
+{
+    int err, flags=0;
+    DBC* dbc;
+    PyObject* txnobj = NULL;
+    DB_TXN *txn = NULL;
+    char* kwnames[] = { "txn", "flags", NULL };
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|Oi:cursor", kwnames,
+                                     &txnobj, &flags))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->cursor(self->db, txn, &dbc, flags);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    return (PyObject*) newDBCursorObject(dbc, self);
+}
+
+
+static PyObject*
+DB_delete(DBObject* self, PyObject* args, PyObject* kwargs)
+{
+    PyObject* txnobj = NULL;
+    int flags = 0;
+    PyObject* keyobj;
+    DBT key;
+    DB_TXN *txn = NULL;
+    char* kwnames[] = { "key", "txn", "flags", NULL };
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|Oi:delete", kwnames,
+                                     &keyobj, &txnobj, &flags))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+    if (!make_key_dbt(self, keyobj, &key, NULL))
+        return NULL;
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+
+    if (-1 == _DB_delete(self, txn, &key, 0))
+        return NULL;
+
+    FREE_DBT(key);
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_fd(DBObject* self, PyObject* args)
+{
+    int err, the_fd;
+
+    if (!PyArg_ParseTuple(args,":fd"))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->fd(self->db, &the_fd);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    return PyInt_FromLong(the_fd);
+}
+
+
+static PyObject*
+DB_get(DBObject* self, PyObject* args, PyObject* kwargs)
+{
+    int err, flags=0;
+    PyObject* txnobj = NULL;
+    PyObject* keyobj;
+    PyObject* dfltobj = NULL;
+    PyObject* retval = NULL;
+    int dlen = -1;
+    int doff = -1;
+    DBT key, data;
+    DB_TXN *txn = NULL;
+    char* kwnames[] = { "key", "default", "txn", "flags", "dlen", "doff", NULL };
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|OOiii:get", kwnames,
+                                     &keyobj, &dfltobj, &txnobj, &flags, &dlen, &doff))
+        return NULL;
+
+    CHECK_DB_NOT_CLOSED(self);
+    if (!make_key_dbt(self, keyobj, &key, &flags))
+        return NULL;
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+
+    CLEAR_DBT(data);
+    if (CHECK_DBFLAG(self, DB_THREAD)) {
+        /* Tell BerkeleyDB to malloc the return value (thread safe) */
+        data.flags = DB_DBT_MALLOC;
+    }
+    if (!add_partial_dbt(&data, dlen, doff))
+        return NULL;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->get(self->db, txn, &key, &data, flags);
+    MYDB_END_ALLOW_THREADS;
+
+    if ((err == DB_NOTFOUND) && (dfltobj != NULL)) {
+        err = 0;
+        Py_INCREF(dfltobj);
+        retval = dfltobj;
+    }
+    else if ((err == DB_NOTFOUND) && self->getReturnsNone) {
+        err = 0;
+        Py_INCREF(Py_None);
+        retval = Py_None;
+    }
+    else if (!err) {
+        if (flags & DB_SET_RECNO) /* return both key and data */
+            retval = Py_BuildValue("s#s#", key.data, key.size, data.data, data.size);
+        else /* return just the data */
+            retval = PyString_FromStringAndSize((char*)data.data, data.size);
+        FREE_DBT(key);
+        FREE_DBT(data);
+    }
+
+    RETURN_IF_ERR();
+    return retval;
+}
+
+
+/* Return size of entry */
+static PyObject*
+DB_get_size(DBObject* self, PyObject* args, PyObject* kwargs)
+{
+    int err, flags=0;
+    PyObject* txnobj = NULL;
+    PyObject* keyobj;
+    PyObject* retval = NULL;
+    DBT key, data;
+    DB_TXN *txn = NULL;
+    char* kwnames[] = { "key", "txn", NULL };
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|O:get_size", kwnames,
+                                     &keyobj, &txnobj))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+    if (!make_key_dbt(self, keyobj, &key, &flags))
+        return NULL;
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+    CLEAR_DBT(data);
+
+    /* We don't allocate any memory, forcing a ENOMEM error and thus
+       getting the record size. */
+    data.flags = DB_DBT_USERMEM;
+    data.ulen = 0;
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->get(self->db, txn, &key, &data, flags);
+    MYDB_END_ALLOW_THREADS;
+    if (err == ENOMEM) {
+        retval = PyInt_FromLong((long)data.size);
+        err = 0;
+    }
+
+    FREE_DBT(key);
+    FREE_DBT(data);
+    RETURN_IF_ERR();
+    return retval;
+}
+
+
+static PyObject*
+DB_get_both(DBObject* self, PyObject* args, PyObject* kwargs)
+{
+    int err, flags=0;
+    PyObject* txnobj = NULL;
+    PyObject* keyobj;
+    PyObject* dataobj;
+    PyObject* retval = NULL;
+    DBT key, data;
+    DB_TXN *txn = NULL;
+    char* kwnames[] = { "key", "data", "txn", "flags", NULL };
+
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OO|Oi:get_both", kwnames,
+                                     &keyobj, &dataobj, &txnobj, &flags))
+        return NULL;
+
+    CHECK_DB_NOT_CLOSED(self);
+    if (!make_key_dbt(self, keyobj, &key, NULL))
+        return NULL;
+    if (!make_dbt(dataobj, &data))
+        return NULL;
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+
+    flags |= DB_GET_BOTH;
+
+    if (CHECK_DBFLAG(self, DB_THREAD)) {
+        /* Tell BerkeleyDB to malloc the return value (thread safe) */
+        data.flags = DB_DBT_MALLOC;
+        /* TODO: Is this flag needed?  We're passing a data object that should
+                 match what's in the DB, so there should be no need to malloc.
+                 We run the risk of freeing something twice!  Check this. */
+    }
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->get(self->db, txn, &key, &data, flags);
+    MYDB_END_ALLOW_THREADS;
+
+    if ((err == DB_NOTFOUND) && self->getReturnsNone) {
+        err = 0;
+        Py_INCREF(Py_None);
+        retval = Py_None;
+    }
+    else if (!err) {
+        retval = PyString_FromStringAndSize((char*)data.data, data.size);
+        FREE_DBT(data); /* Only if retrieval was successful */
+    }
+
+    FREE_DBT(key);
+    RETURN_IF_ERR();
+    return retval;
+}
+
+
+static PyObject*
+DB_get_byteswapped(DBObject* self, PyObject* args)
+{
+#if (DBVER >= 33)
+    int err = 0;
+#endif
+    int retval = -1;
+
+    if (!PyArg_ParseTuple(args,":get_byteswapped"))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+#if (DBVER >= 33)
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->get_byteswapped(self->db, &retval);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+#else
+    MYDB_BEGIN_ALLOW_THREADS;
+    retval = self->db->get_byteswapped(self->db);
+    MYDB_END_ALLOW_THREADS;
+#endif
+    return PyInt_FromLong(retval);
+}
+
+
+static PyObject*
+DB_get_type(DBObject* self, PyObject* args)
+{
+    int type;
+
+    if (!PyArg_ParseTuple(args,":get_type"))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    type = _DB_get_type(self);
+    MYDB_END_ALLOW_THREADS;
+    if (type == -1)
+        return NULL;
+    return PyInt_FromLong(type);
+}
+
+
+static PyObject*
+DB_join(DBObject* self, PyObject* args)
+{
+    int err, flags=0;
+    int length, x;
+    PyObject* cursorsObj;
+    DBC** cursors;
+    DBC*  dbc;
+
+
+    if (!PyArg_ParseTuple(args,"O|i:join", &cursorsObj, &flags))
+        return NULL;
+
+    CHECK_DB_NOT_CLOSED(self);
+
+    if (!PySequence_Check(cursorsObj)) {
+        PyErr_SetString(PyExc_TypeError, "Sequence of DBCursor objects expected");
+        return NULL;
+    }
+
+    length = PyObject_Length(cursorsObj);
+    cursors = malloc((length+1) * sizeof(DBC*));
+    cursors[length] = NULL;
+    for (x=0; x<length; x++) {
+        PyObject* item = PySequence_GetItem(cursorsObj, x);
+        if (!DBCursorObject_Check(item)) {
+            PyErr_SetString(PyExc_TypeError, "Sequence of DBCursor objects expected");
+            free(cursors);
+            return NULL;
+        }
+        cursors[x] = ((DBCursorObject*)item)->dbc;
+    }
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->join(self->db, cursors, &dbc, flags);
+    MYDB_END_ALLOW_THREADS;
+    free(cursors);
+    RETURN_IF_ERR();
+
+    return (PyObject*) newDBCursorObject(dbc, self);
+}
+
+
+static PyObject*
+DB_key_range(DBObject* self, PyObject* args, PyObject* kwargs)
+{
+    int err, flags=0;
+    PyObject* txnobj = NULL;
+    PyObject* keyobj;
+    DBT key;
+    DB_TXN *txn = NULL;
+    DB_KEY_RANGE range;
+    char* kwnames[] = { "key", "txn", "flags", NULL };
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|Oi:key_range", kwnames,
+                                     &keyobj, &txnobj, &flags))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+    if (!make_dbt(keyobj, &key))   /* BTree only, don't need to allow for an int key */
+        return NULL;
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->key_range(self->db, txn, &key, &range, flags);
+    MYDB_END_ALLOW_THREADS;
+
+    RETURN_IF_ERR();
+    return Py_BuildValue("ddd", range.less, range.equal, range.greater);
+}
+
+
+static PyObject*
+DB_open(DBObject* self, PyObject* args, PyObject* kwargs)
+{
+    int err, type = DB_UNKNOWN, flags=0, mode=0660;
+    char* filename = NULL;
+    char* dbname = NULL;
+    char* kwnames[] = { "filename", "dbname", "dbtype", "flags", "mode", NULL };
+    char* kwnames2[] = { "filename", "dbtype", "flags", "mode", NULL };
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "z|ziii:open", kwnames,
+                                     &filename, &dbname, &type, &flags, &mode)) {
+        PyErr_Clear();
+        type = DB_UNKNOWN; flags = 0; mode = 0660;
+        filename = NULL; dbname = NULL;
+        if (!PyArg_ParseTupleAndKeywords(args, kwargs,"z|iii:open", kwnames2,
+                                         &filename, &type, &flags, &mode))
+            return NULL;
+    }
+
+    if (NULL == self->db) {
+        PyErr_SetObject(DBError, Py_BuildValue("(is)", 0,
+                                 "Cannot call open() twice for DB object"));
+        return NULL;
+    }
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->open(self->db, filename, dbname, type, flags, mode);
+    MYDB_END_ALLOW_THREADS;
+    if (makeDBError(err)) {
+        self->db = NULL;
+        return NULL;
+    }
+
+    self->flags = flags;
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_put(DBObject* self, PyObject* args, PyObject* kwargs)
+{
+    int flags=0;
+    PyObject* txnobj = NULL;
+    int dlen = -1;
+    int doff = -1;
+    PyObject* keyobj, *dataobj, *retval;
+    DBT key, data;
+    DB_TXN *txn = NULL;
+    char* kwnames[] = { "key", "data", "txn", "flags", "dlen", "doff", NULL };
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OO|Oiii:put", kwnames,
+                         &keyobj, &dataobj, &txnobj, &flags, &dlen, &doff))
+        return NULL;
+
+    CHECK_DB_NOT_CLOSED(self);
+    if (!make_key_dbt(self, keyobj, &key, NULL)) return NULL;
+    if (!make_dbt(dataobj, &data)) return NULL;
+    if (!add_partial_dbt(&data, dlen, doff)) return NULL;
+    if (!checkTxnObj(txnobj, &txn)) return NULL;
+
+    if (-1 == _DB_put(self, txn, &key, &data, flags)) {
+        FREE_DBT(key);
+        return NULL;
+    }
+
+    if (flags & DB_APPEND)
+        retval = PyInt_FromLong(*((db_recno_t*)key.data));
+    else {
+        retval = Py_None;
+        Py_INCREF(retval);
+    }
+    FREE_DBT(key);
+    return retval;
+}
+
+
+
+static PyObject*
+DB_remove(DBObject* self, PyObject* args, PyObject* kwargs)
+{
+    char* filename;
+    char* database = NULL;
+    int err, flags=0;
+    char* kwnames[] = { "filename", "dbname", "flags", NULL};
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|zi:remove", kwnames,
+                                     &filename, &database, &flags))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->remove(self->db, filename, database, flags);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+
+static PyObject*
+DB_rename(DBObject* self, PyObject* args)
+{
+    char* filename;
+    char* database;
+    char* newname;
+    int err, flags=0;
+
+    if (!PyArg_ParseTuple(args, "sss|i:rename", &filename, &database, &newname, &flags))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->rename(self->db, filename, database, newname, flags);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_set_bt_minkey(DBObject* self, PyObject* args)
+{
+    int err, minkey;
+
+    if (!PyArg_ParseTuple(args,"i:set_bt_minkey", &minkey ))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->set_bt_minkey(self->db, minkey);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_set_cachesize(DBObject* self, PyObject* args)
+{
+    int err;
+    int gbytes = 0, bytes = 0, ncache = 0;
+
+    if (!PyArg_ParseTuple(args,"ii|i:set_cachesize",
+                          &gbytes,&bytes,&ncache))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->set_cachesize(self->db, gbytes, bytes, ncache);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_set_flags(DBObject* self, PyObject* args)
+{
+    int err, flags;
+
+    if (!PyArg_ParseTuple(args,"i:set_flags", &flags))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->set_flags(self->db, flags);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+
+    self->setflags |= flags;
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_set_h_ffactor(DBObject* self, PyObject* args)
+{
+    int err, ffactor;
+
+    if (!PyArg_ParseTuple(args,"i:set_h_ffactor", &ffactor))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->set_h_ffactor(self->db, ffactor);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_set_h_nelem(DBObject* self, PyObject* args)
+{
+    int err, nelem;
+
+    if (!PyArg_ParseTuple(args,"i:set_h_nelem", &nelem))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->set_h_nelem(self->db, nelem);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_set_lorder(DBObject* self, PyObject* args)
+{
+    int err, lorder;
+
+    if (!PyArg_ParseTuple(args,"i:set_lorder", &lorder))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->set_lorder(self->db, lorder);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_set_pagesize(DBObject* self, PyObject* args)
+{
+    int err, pagesize;
+
+    if (!PyArg_ParseTuple(args,"i:set_pagesize", &pagesize))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->set_pagesize(self->db, pagesize);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_set_re_delim(DBObject* self, PyObject* args)
+{
+    int err;
+    char delim;
+
+    if (!PyArg_ParseTuple(args,"b:set_re_delim", &delim)) {
+        PyErr_Clear();
+        if (!PyArg_ParseTuple(args,"c:set_re_delim", &delim))
+            return NULL;
+    }
+
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->set_re_delim(self->db, delim);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+static PyObject*
+DB_set_re_len(DBObject* self, PyObject* args)
+{
+    int err, len;
+
+    if (!PyArg_ParseTuple(args,"i:set_re_len", &len))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->set_re_len(self->db, len);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_set_re_pad(DBObject* self, PyObject* args)
+{
+    int err;
+    char pad;
+
+    if (!PyArg_ParseTuple(args,"b:set_re_pad", &pad)) {
+        PyErr_Clear();
+        if (!PyArg_ParseTuple(args,"c:set_re_pad", &pad))
+            return NULL;
+    }
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->set_re_pad(self->db, pad);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_set_re_source(DBObject* self, PyObject* args)
+{
+    int err;
+    char *re_source;
+
+    if (!PyArg_ParseTuple(args,"s:set_re_source", &re_source))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->set_re_source(self->db, re_source);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+#if (DBVER >= 32)
+static PyObject*
+DB_set_q_extentsize(DBObject* self, PyObject* args)
+{
+    int err;
+    int extentsize;
+
+    if (!PyArg_ParseTuple(args,"i:set_q_extentsize", &extentsize))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->set_q_extentsize(self->db, extentsize);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+#endif
+
+static PyObject*
+DB_stat(DBObject* self, PyObject* args)
+{
+    int err, flags = 0, type;
+    void* sp;
+    PyObject* d;
+
+
+    if (!PyArg_ParseTuple(args, "|i:stat", &flags))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 33)
+    err = self->db->stat(self->db, &sp, flags);
+#else
+    err = self->db->stat(self->db, &sp, NULL, flags);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+
+    self->haveStat = 1;
+
+    /* Turn the stat structure into a dictionary */
+    type = _DB_get_type(self);
+    if ((type == -1) || ((d = PyDict_New()) == NULL)) {
+        free(sp);
+        return NULL;
+    }
+
+#define MAKE_HASH_ENTRY(name)  _addIntToDict(d, #name, ((DB_HASH_STAT*)sp)->hash_##name)
+#define MAKE_BT_ENTRY(name)    _addIntToDict(d, #name, ((DB_BTREE_STAT*)sp)->bt_##name)
+#define MAKE_QUEUE_ENTRY(name) _addIntToDict(d, #name, ((DB_QUEUE_STAT*)sp)->qs_##name)
+
+    switch (type) {
+    case DB_HASH:
+        MAKE_HASH_ENTRY(magic);
+        MAKE_HASH_ENTRY(version);
+        MAKE_HASH_ENTRY(nkeys);
+        MAKE_HASH_ENTRY(ndata);
+        MAKE_HASH_ENTRY(pagesize);
+        MAKE_HASH_ENTRY(nelem);
+        MAKE_HASH_ENTRY(ffactor);
+        MAKE_HASH_ENTRY(buckets);
+        MAKE_HASH_ENTRY(free);
+        MAKE_HASH_ENTRY(bfree);
+        MAKE_HASH_ENTRY(bigpages);
+        MAKE_HASH_ENTRY(big_bfree);
+        MAKE_HASH_ENTRY(overflows);
+        MAKE_HASH_ENTRY(ovfl_free);
+        MAKE_HASH_ENTRY(dup);
+        MAKE_HASH_ENTRY(dup_free);
+        break;
+
+    case DB_BTREE:
+    case DB_RECNO:
+        MAKE_BT_ENTRY(magic);
+        MAKE_BT_ENTRY(version);
+        MAKE_BT_ENTRY(nkeys);
+        MAKE_BT_ENTRY(ndata);
+        MAKE_BT_ENTRY(pagesize);
+        MAKE_BT_ENTRY(minkey);
+        MAKE_BT_ENTRY(re_len);
+        MAKE_BT_ENTRY(re_pad);
+        MAKE_BT_ENTRY(levels);
+        MAKE_BT_ENTRY(int_pg);
+        MAKE_BT_ENTRY(leaf_pg);
+        MAKE_BT_ENTRY(dup_pg);
+        MAKE_BT_ENTRY(over_pg);
+        MAKE_BT_ENTRY(free);
+        MAKE_BT_ENTRY(int_pgfree);
+        MAKE_BT_ENTRY(leaf_pgfree);
+        MAKE_BT_ENTRY(dup_pgfree);
+        MAKE_BT_ENTRY(over_pgfree);
+        break;
+
+    case DB_QUEUE:
+        MAKE_QUEUE_ENTRY(magic);
+        MAKE_QUEUE_ENTRY(version);
+        MAKE_QUEUE_ENTRY(nkeys);
+        MAKE_QUEUE_ENTRY(ndata);
+        MAKE_QUEUE_ENTRY(pagesize);
+        MAKE_QUEUE_ENTRY(pages);
+        MAKE_QUEUE_ENTRY(re_len);
+        MAKE_QUEUE_ENTRY(re_pad);
+        MAKE_QUEUE_ENTRY(pgfree);
+#if (DBVER >= 31) && (DBVER < 40)
+        MAKE_QUEUE_ENTRY(start);
+#endif
+        MAKE_QUEUE_ENTRY(first_recno);
+        MAKE_QUEUE_ENTRY(cur_recno);
+        break;
+
+    default:
+        PyErr_SetString(PyExc_TypeError, "Unknown DB type, unable to stat");
+        Py_DECREF(d);
+        d = NULL;
+    }
+
+#undef MAKE_HASH_ENTRY
+#undef MAKE_BT_ENTRY
+#undef MAKE_QUEUE_ENTRY
+
+    free(sp);
+    return d;
+}
+
+static PyObject*
+DB_sync(DBObject* self, PyObject* args)
+{
+    int err;
+    int flags = 0;
+
+    if (!PyArg_ParseTuple(args,"|i:sync", &flags ))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->sync(self->db, flags);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+#if (DBVER >= 33)
+static PyObject*
+DB_truncate(DBObject* self, PyObject* args, PyObject* kwargs)
+{
+    int err, flags=0;
+    u_int32_t count=0;
+    PyObject* txnobj = NULL;
+    DB_TXN *txn = NULL;
+    char* kwnames[] = { "txn", "flags", NULL };
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|Oi:cursor", kwnames,
+                                     &txnobj, &flags))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->truncate(self->db, txn, &count, flags);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    return PyInt_FromLong(count);
+}
+#endif
+
+
+static PyObject*
+DB_upgrade(DBObject* self, PyObject* args)
+{
+    int err, flags=0;
+    char *filename;
+
+    if (!PyArg_ParseTuple(args,"s|i:upgrade", &filename, &flags))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->upgrade(self->db, filename, flags);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_verify(DBObject* self, PyObject* args, PyObject* kwargs)
+{
+    int err, flags=0;
+    char* fileName;
+    char* dbName=NULL;
+    char* outFileName=NULL;
+    FILE* outFile=NULL;
+    char* kwnames[] = { "filename", "dbname", "outfile", "flags", NULL };
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|zzi:verify", kwnames,
+                                     &fileName, &dbName, &outFileName, &flags))
+        return NULL;
+
+    CHECK_DB_NOT_CLOSED(self);
+    if (outFileName)
+        outFile = fopen(outFileName, "w");
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->verify(self->db, fileName, dbName, outFile, flags);
+    MYDB_END_ALLOW_THREADS;
+    if (outFileName)
+        fclose(outFile);
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DB_set_get_returns_none(DBObject* self, PyObject* args)
+{
+    int flags=0;
+    int oldValue;
+
+    if (!PyArg_ParseTuple(args,"i:set_get_returns_none", &flags))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+
+    oldValue = self->getReturnsNone;
+    self->getReturnsNone = flags;
+    return PyInt_FromLong(oldValue);
+}
+
+
+/*-------------------------------------------------------------- */
+/* Mapping and Dictionary-like access routines */
+
+int DB_length(DBObject* self)
+{
+    int err;
+    long size = 0;
+    int flags = 0;
+    void* sp;
+
+    if (self->db == NULL) {
+        PyErr_SetObject(DBError, Py_BuildValue("(is)", 0, "DB object has been closed"));
+        return -1;
+    }
+
+    if (self->haveStat) {  /* Has the stat function been called recently?  If
+                              so, we can use the cached value. */
+        flags = DB_CACHED_COUNTS;
+    }
+
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 33)
+    err = self->db->stat(self->db, &sp, flags);
+#else
+    err = self->db->stat(self->db, &sp, NULL, flags);
+#endif
+    MYDB_END_ALLOW_THREADS;
+
+    if (err)
+        return -1;
+
+    self->haveStat = 1;
+
+    /* All the stat structures have matching fields upto the ndata field,
+       so we can use any of them for the type cast */
+    size = ((DB_BTREE_STAT*)sp)->bt_ndata;
+    free(sp);
+    return size;
+}
+
+
+PyObject* DB_subscript(DBObject* self, PyObject* keyobj)
+{
+    int err;
+    PyObject* retval;
+    DBT key;
+    DBT data;
+
+    CHECK_DB_NOT_CLOSED(self);
+    if (!make_key_dbt(self, keyobj, &key, NULL))
+        return NULL;
+
+    CLEAR_DBT(data);
+    if (CHECK_DBFLAG(self, DB_THREAD)) {
+        /* Tell BerkeleyDB to malloc the return value (thread safe) */
+        data.flags = DB_DBT_MALLOC;
+    }
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->get(self->db, NULL, &key, &data, 0);
+    MYDB_END_ALLOW_THREADS;
+    if (err == DB_NOTFOUND || err == DB_KEYEMPTY) {
+        PyErr_SetObject(PyExc_KeyError, keyobj);
+        retval = NULL;
+    }
+    else if (makeDBError(err)) {
+        retval = NULL;
+    }
+    else {
+        retval = PyString_FromStringAndSize((char*)data.data, data.size);
+        FREE_DBT(data);
+    }
+
+    FREE_DBT(key);
+    return retval;
+}
+
+
+static int
+DB_ass_sub(DBObject* self, PyObject* keyobj, PyObject* dataobj)
+{
+    DBT key, data;
+    int retval;
+    int flags = 0;
+
+    if (self->db == NULL) {
+        PyErr_SetObject(DBError, Py_BuildValue("(is)", 0, "DB object has been closed"));
+        return -1;
+    }
+
+    if (!make_key_dbt(self, keyobj, &key, NULL))
+        return -1;
+
+    if (dataobj != NULL) {
+        if (!make_dbt(dataobj, &data))
+            retval =  -1;
+        else {
+            if (self->setflags & (DB_DUP|DB_DUPSORT))
+                flags = DB_NOOVERWRITE;         /* dictionaries shouldn't have duplicate keys */
+            retval = _DB_put(self, NULL, &key, &data, flags);
+
+            if ((retval == -1) &&  (self->setflags & (DB_DUP|DB_DUPSORT))) {
+                /* try deleting any old record that matches and then PUT it again... */
+                _DB_delete(self, NULL, &key, 0);
+                PyErr_Clear();
+                retval = _DB_put(self, NULL, &key, &data, flags);
+            }
+        }
+    }
+    else {
+        /* dataobj == NULL, so delete the key */
+        retval = _DB_delete(self, NULL, &key, 0);
+    }
+    FREE_DBT(key);
+    return retval;
+}
+
+
+static PyObject*
+DB_has_key(DBObject* self, PyObject* args)
+{
+    int err;
+    PyObject* keyobj;
+    DBT key, data;
+    PyObject* txnobj = NULL;
+    DB_TXN *txn = NULL;
+
+    if (!PyArg_ParseTuple(args,"O|O:has_key", &keyobj, &txnobj ))
+        return NULL;
+    CHECK_DB_NOT_CLOSED(self);
+    if (!make_key_dbt(self, keyobj, &key, NULL))
+        return NULL;
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+
+    /* This causes ENOMEM to be returned when the db has the key because
+       it has a record but can't allocate a buffer for the data.  This saves
+       having to deal with data we won't be using.
+     */
+    CLEAR_DBT(data);
+    data.flags = DB_DBT_USERMEM;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->get(self->db, NULL, &key, &data, 0);
+    MYDB_END_ALLOW_THREADS;
+    FREE_DBT(key);
+    return PyInt_FromLong((err == ENOMEM) || (err == 0));
+}
+
+
+#define _KEYS_LIST      1
+#define _VALUES_LIST    2
+#define _ITEMS_LIST     3
+
+static PyObject*
+_DB_make_list(DBObject* self, DB_TXN* txn, int type)
+{
+    int err, dbtype;
+    DBT key;
+    DBT data;
+    DBC *cursor;
+    PyObject* list;
+    PyObject* item = NULL;
+
+    CHECK_DB_NOT_CLOSED(self);
+    CLEAR_DBT(key);
+    CLEAR_DBT(data);
+
+    dbtype = _DB_get_type(self);
+    if (dbtype == -1)
+        return NULL;
+
+    list = PyList_New(0);
+    if (list == NULL) {
+        PyErr_SetString(PyExc_MemoryError, "PyList_New failed");
+        return NULL;
+    }
+
+    /* get a cursor */
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db->cursor(self->db, NULL, &cursor, 0);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+
+    if (CHECK_DBFLAG(self, DB_THREAD)) {
+        key.flags = DB_DBT_REALLOC;
+        data.flags = DB_DBT_REALLOC;
+    }
+
+    while (1) { /* use the cursor to traverse the DB, collecting items */
+        MYDB_BEGIN_ALLOW_THREADS;
+        err = cursor->c_get(cursor, &key, &data, DB_NEXT);
+        MYDB_END_ALLOW_THREADS;
+
+        if (err) {
+            /* for any error, break out of the loop */
+            break;
+        }
+
+        switch (type) {
+        case _KEYS_LIST:
+            switch(dbtype) {
+            case DB_BTREE:
+            case DB_HASH:
+            default:
+                item = PyString_FromStringAndSize((char*)key.data, key.size);
+                break;
+            case DB_RECNO:
+            case DB_QUEUE:
+                item = PyInt_FromLong(*((db_recno_t*)key.data));
+                break;
+            }
+            break;
+
+        case _VALUES_LIST:
+            item = PyString_FromStringAndSize((char*)data.data, data.size);
+            break;
+
+        case _ITEMS_LIST:
+            switch(dbtype) {
+            case DB_BTREE:
+            case DB_HASH:
+            default:
+                item = Py_BuildValue("s#s#", key.data, key.size, data.data, data.size);
+                break;
+            case DB_RECNO:
+            case DB_QUEUE:
+                item = Py_BuildValue("is#", *((db_recno_t*)key.data), data.data, data.size);
+                break;
+            }
+            break;
+        }
+        if (item == NULL) {
+            Py_DECREF(list);
+            PyErr_SetString(PyExc_MemoryError, "List item creation failed");
+            list = NULL;
+            goto done;
+        }
+        PyList_Append(list, item);
+        Py_DECREF(item);
+    }
+
+    /* DB_NOTFOUND is okay, it just means we got to the end */
+    if (err != DB_NOTFOUND && makeDBError(err)) {
+        Py_DECREF(list);
+        list = NULL;
+    }
+
+ done:
+    FREE_DBT(key);
+    FREE_DBT(data);
+    MYDB_BEGIN_ALLOW_THREADS;
+    cursor->c_close(cursor);
+    MYDB_END_ALLOW_THREADS;
+    return list;
+}
+
+
+static PyObject*
+DB_keys(DBObject* self, PyObject* args)
+{
+    PyObject* txnobj = NULL;
+    DB_TXN *txn = NULL;
+
+    if (!PyArg_ParseTuple(args,"|O:keys", &txnobj))
+        return NULL;
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+    return _DB_make_list(self, txn, _KEYS_LIST);
+}
+
+
+static PyObject*
+DB_items(DBObject* self, PyObject* args)
+{
+    PyObject* txnobj = NULL;
+    DB_TXN *txn = NULL;
+
+    if (!PyArg_ParseTuple(args,"|O:items", &txnobj))
+        return NULL;
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+    return _DB_make_list(self, txn, _ITEMS_LIST);
+}
+
+
+static PyObject*
+DB_values(DBObject* self, PyObject* args)
+{
+    PyObject* txnobj = NULL;
+    DB_TXN *txn = NULL;
+
+    if (!PyArg_ParseTuple(args,"|O:values", &txnobj))
+        return NULL;
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+    return _DB_make_list(self, txn, _VALUES_LIST);
+}
+
+
+/* --------------------------------------------------------------------- */
+/* DBCursor methods */
+
+
+static PyObject*
+DBC_close(DBCursorObject* self, PyObject* args)
+{
+    int err = 0;
+
+    if (!PyArg_ParseTuple(args, ":close"))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    if (self->dbc != NULL) {
+        MYDB_BEGIN_ALLOW_THREADS;
+        err = self->dbc->c_close(self->dbc);
+        self->dbc = NULL;
+        MYDB_END_ALLOW_THREADS;
+    }
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBC_count(DBCursorObject* self, PyObject* args)
+{
+    int err = 0;
+    db_recno_t count;
+    int flags = 0;
+
+    if (!PyArg_ParseTuple(args, "|i:count", &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->dbc->c_count(self->dbc, &count, flags);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+
+    return PyInt_FromLong(count);
+}
+
+
+static PyObject*
+DBC_current(DBCursorObject* self, PyObject* args)
+{
+    int flags = 0;
+
+    if (!PyArg_ParseTuple(args, "|i:current", &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    return _DBCursor_get(self, flags|DB_CURRENT);
+}
+
+
+static PyObject*
+DBC_delete(DBCursorObject* self, PyObject* args)
+{
+    int err, flags=0;
+
+    if (!PyArg_ParseTuple(args, "|i:delete", &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->dbc->c_del(self->dbc, flags);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+
+    self->mydb->haveStat = 0;
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBC_dup(DBCursorObject* self, PyObject* args)
+{
+    int err, flags =0;
+    DBC* dbc = NULL;
+
+    if (!PyArg_ParseTuple(args, "|i:dup", &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->dbc->c_dup(self->dbc, &dbc, flags);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+
+    return (PyObject*) newDBCursorObject(dbc, self->mydb);
+}
+
+
+static PyObject*
+DBC_first(DBCursorObject* self, PyObject* args)
+{
+    int flags = 0;
+
+    if (!PyArg_ParseTuple(args, "|i:first", &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    return _DBCursor_get(self, flags|DB_FIRST);
+}
+
+
+static PyObject*
+DBC_get(DBCursorObject* self, PyObject* args)
+{
+    int err, flags;
+    PyObject* keyobj = NULL;
+    PyObject* dataobj = NULL;
+    PyObject* retval = NULL;
+    DBT key, data;
+
+    CLEAR_DBT(key);
+    CLEAR_DBT(data);
+    if (!PyArg_ParseTuple(args, "i:get", &flags)) {
+        PyErr_Clear();
+        if (!PyArg_ParseTuple(args, "Oi:get", &keyobj, &flags)) {
+            PyErr_Clear();
+            if (!PyArg_ParseTuple(args, "OOi:get", &keyobj, &dataobj, &flags))
+                return NULL;
+        }
+    }
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    if (keyobj && !make_key_dbt(self->mydb, keyobj, &key, NULL))
+        return NULL;
+    if (dataobj && !make_dbt(dataobj, &data))
+        return NULL;
+
+    if (CHECK_DBFLAG(self->mydb, DB_THREAD)) {
+        data.flags = DB_DBT_MALLOC;
+        key.flags = DB_DBT_MALLOC;
+    }
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->dbc->c_get(self->dbc, &key, &data, flags);
+    MYDB_END_ALLOW_THREADS;
+
+
+    if ((err == DB_NOTFOUND) && self->mydb->getReturnsNone) {
+        Py_INCREF(Py_None);
+        retval = Py_None;
+    }
+    else if (makeDBError(err)) {
+        retval = NULL;
+    }
+    else {
+        switch (_DB_get_type(self->mydb)) {
+        case -1:
+            retval = NULL;
+            break;
+        case DB_BTREE:
+        case DB_HASH:
+        default:
+            retval = Py_BuildValue("s#s#", key.data, key.size,
+                                   data.data, data.size);
+            break;
+        case DB_RECNO:
+        case DB_QUEUE:
+            retval = Py_BuildValue("is#", *((db_recno_t*)key.data),
+                                   data.data, data.size);
+            break;
+        }
+        FREE_DBT(key);
+        FREE_DBT(data);
+    }
+    return retval;
+}
+
+
+static PyObject*
+DBC_get_recno(DBCursorObject* self, PyObject* args)
+{
+    int err;
+    db_recno_t recno;
+    DBT key;
+    DBT data;
+
+    if (!PyArg_ParseTuple(args, ":get_recno"))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    CLEAR_DBT(key);
+    CLEAR_DBT(data);
+    if (CHECK_DBFLAG(self->mydb, DB_THREAD)) {
+        /* Tell BerkeleyDB to malloc the return value (thread safe) */
+        data.flags = DB_DBT_MALLOC;
+        key.flags = DB_DBT_MALLOC;
+    }
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->dbc->c_get(self->dbc, &key, &data, DB_GET_RECNO);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+
+    recno = *((db_recno_t*)data.data);
+    FREE_DBT(key);
+    FREE_DBT(data);
+    return PyInt_FromLong(recno);
+}
+
+
+static PyObject*
+DBC_last(DBCursorObject* self, PyObject* args)
+{
+    int flags = 0;
+
+    if (!PyArg_ParseTuple(args, "|i:last", &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    return _DBCursor_get(self, flags|DB_LAST);
+}
+
+
+static PyObject*
+DBC_next(DBCursorObject* self, PyObject* args)
+{
+    int flags = 0;
+
+    if (!PyArg_ParseTuple(args, "|i:next", &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    return _DBCursor_get(self, flags|DB_NEXT);
+}
+
+
+static PyObject*
+DBC_prev(DBCursorObject* self, PyObject* args)
+{
+    int flags = 0;
+
+    if (!PyArg_ParseTuple(args, "|i:prev", &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    return _DBCursor_get(self, flags|DB_PREV);
+}
+
+
+static PyObject*
+DBC_put(DBCursorObject* self, PyObject* args)
+{
+    int err, flags = 0;
+    PyObject* keyobj, *dataobj;
+    DBT key, data;
+
+    if (!PyArg_ParseTuple(args, "OO|i:put", &keyobj, &dataobj, &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    if (!make_key_dbt(self->mydb, keyobj, &key, NULL))
+        return NULL;
+    if (!make_dbt(dataobj, &data))
+        return NULL;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->dbc->c_put(self->dbc, &key, &data, flags);
+    MYDB_END_ALLOW_THREADS;
+    FREE_DBT(key);
+    RETURN_IF_ERR();
+    self->mydb->haveStat = 0;
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBC_set(DBCursorObject* self, PyObject* args)
+{
+    int err, flags = 0;
+    DBT key, data;
+    PyObject* retval, *keyobj;
+
+    if (!PyArg_ParseTuple(args, "O|i:set", &keyobj, &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    if (!make_key_dbt(self->mydb, keyobj, &key, NULL))
+        return NULL;
+
+    CLEAR_DBT(data);
+    if (CHECK_DBFLAG(self->mydb, DB_THREAD)) {
+        /* Tell BerkeleyDB to malloc the return value (thread safe) */
+        data.flags = DB_DBT_MALLOC;
+    }
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->dbc->c_get(self->dbc, &key, &data, flags|DB_SET);
+    MYDB_END_ALLOW_THREADS;
+    if (makeDBError(err)) {
+        retval = NULL;
+    }
+    else {
+        switch (_DB_get_type(self->mydb)) {
+        case -1:
+            retval = NULL;
+            break;
+        case DB_BTREE:
+        case DB_HASH:
+        default:
+            retval = Py_BuildValue("s#s#", key.data, key.size,
+                                   data.data, data.size);
+            break;
+        case DB_RECNO:
+        case DB_QUEUE:
+            retval = Py_BuildValue("is#", *((db_recno_t*)key.data),
+                                   data.data, data.size);
+            break;
+        }
+        FREE_DBT(key);
+        FREE_DBT(data);
+    }
+
+    return retval;
+}
+
+
+static PyObject*
+DBC_set_range(DBCursorObject* self, PyObject* args)
+{
+    int err, flags = 0;
+    DBT key, data;
+    PyObject* retval, *keyobj;
+
+    if (!PyArg_ParseTuple(args, "O|i:set_range", &keyobj, &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    if (!make_key_dbt(self->mydb, keyobj, &key, NULL))
+        return NULL;
+
+    CLEAR_DBT(data);
+    if (CHECK_DBFLAG(self->mydb, DB_THREAD)) {
+        /* Tell BerkeleyDB to malloc the return value (thread safe) */
+        data.flags = DB_DBT_MALLOC;
+        key.flags = DB_DBT_MALLOC;
+    }
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->dbc->c_get(self->dbc, &key, &data, flags|DB_SET_RANGE);
+    MYDB_END_ALLOW_THREADS;
+    if (makeDBError(err)) {
+        retval = NULL;
+    }
+    else {
+        switch (_DB_get_type(self->mydb)) {
+        case -1:
+            retval = NULL;
+            break;
+        case DB_BTREE:
+        case DB_HASH:
+        default:
+            retval = Py_BuildValue("s#s#", key.data, key.size,
+                                   data.data, data.size);
+            break;
+        case DB_RECNO:
+        case DB_QUEUE:
+            retval = Py_BuildValue("is#", *((db_recno_t*)key.data),
+                                   data.data, data.size);
+            break;
+        }
+        FREE_DBT(key);
+        FREE_DBT(data);
+    }
+
+    return retval;
+}
+
+
+static PyObject*
+DBC_get_both(DBCursorObject* self, PyObject* args)
+{
+    int err, flags=0;
+    DBT key, data;
+    PyObject* retval, *keyobj, *dataobj;
+
+    if (!PyArg_ParseTuple(args, "OO|i:get_both", &keyobj, &dataobj, &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    if (!make_key_dbt(self->mydb, keyobj, &key, NULL))
+        return NULL;
+    if (!make_dbt(dataobj, &data))
+        return NULL;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->dbc->c_get(self->dbc, &key, &data, flags|DB_GET_BOTH);
+    MYDB_END_ALLOW_THREADS;
+    if (makeDBError(err)) {
+        retval = NULL;
+    }
+    else {
+        switch (_DB_get_type(self->mydb)) {
+        case -1:
+            retval = NULL;
+            break;
+        case DB_BTREE:
+        case DB_HASH:
+        default:
+            retval = Py_BuildValue("s#s#", key.data, key.size,
+                                   data.data, data.size);
+            break;
+        case DB_RECNO:
+        case DB_QUEUE:
+            retval = Py_BuildValue("is#", *((db_recno_t*)key.data),
+                                   data.data, data.size);
+            break;
+        }
+    }
+
+    FREE_DBT(key);
+    return retval;
+}
+
+
+static PyObject*
+DBC_set_recno(DBCursorObject* self, PyObject* args)
+{
+    int err, irecno, flags=0;
+    db_recno_t recno;
+    DBT key, data;
+    PyObject* retval;
+
+    if (!PyArg_ParseTuple(args, "i|i:set_recno", &irecno, &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    CLEAR_DBT(key);
+    recno = (db_recno_t) irecno;
+    /* use allocated space so DB will be able to realloc room for the real key */
+    key.data = malloc(sizeof(db_recno_t));
+    if (key.data == NULL) {
+        PyErr_SetString(PyExc_MemoryError, "Key memory allocation failed");
+        return NULL;
+    }
+    key.size = sizeof(db_recno_t);
+    key.ulen = key.size;
+    memcpy(key.data, &recno, sizeof(db_recno_t));
+    key.flags = DB_DBT_REALLOC;
+
+    CLEAR_DBT(data);
+    if (CHECK_DBFLAG(self->mydb, DB_THREAD)) {
+        /* Tell BerkeleyDB to malloc the return value (thread safe) */
+        data.flags = DB_DBT_MALLOC;
+    }
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->dbc->c_get(self->dbc, &key, &data, flags|DB_SET_RECNO);
+    MYDB_END_ALLOW_THREADS;
+    if (makeDBError(err)) {
+        retval = NULL;
+    }
+    else {  /* Can only be used for BTrees, so no need to return int key */
+        retval = Py_BuildValue("s#s#", key.data, key.size,
+                               data.data, data.size);
+        FREE_DBT(key);
+        FREE_DBT(data);
+    }
+
+    return retval;
+}
+
+
+static PyObject*
+DBC_consume(DBCursorObject* self, PyObject* args)
+{
+    int flags = 0;
+
+    if (!PyArg_ParseTuple(args, "|i:consume", &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    return _DBCursor_get(self, flags|DB_CONSUME);
+}
+
+
+static PyObject*
+DBC_next_dup(DBCursorObject* self, PyObject* args)
+{
+    int flags = 0;
+
+    if (!PyArg_ParseTuple(args, "|i:next_dup", &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    return _DBCursor_get(self, flags|DB_NEXT_DUP);
+}
+
+
+static PyObject*
+DBC_next_nodup(DBCursorObject* self, PyObject* args)
+{
+    int flags = 0;
+
+    if (!PyArg_ParseTuple(args, "|i:next_nodup", &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    return _DBCursor_get(self, flags|DB_NEXT_NODUP);
+}
+
+
+static PyObject*
+DBC_prev_nodup(DBCursorObject* self, PyObject* args)
+{
+    int flags = 0;
+
+    if (!PyArg_ParseTuple(args, "|i:prev_nodup", &flags))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    return _DBCursor_get(self, flags|DB_PREV_NODUP);
+}
+
+
+static PyObject*
+DBC_join_item(DBCursorObject* self, PyObject* args)
+{
+    int err;
+    DBT key, data;
+    PyObject* retval;
+
+    if (!PyArg_ParseTuple(args, ":join_item"))
+        return NULL;
+
+    CHECK_CURSOR_NOT_CLOSED(self);
+
+    CLEAR_DBT(key);
+    CLEAR_DBT(data);
+    if (CHECK_DBFLAG(self->mydb, DB_THREAD)) {
+        /* Tell BerkeleyDB to malloc the return value (thread safe) */
+        key.flags = DB_DBT_MALLOC;
+    }
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->dbc->c_get(self->dbc, &key, &data, DB_JOIN_ITEM);
+    MYDB_END_ALLOW_THREADS;
+    if (makeDBError(err)) {
+        retval = NULL;
+    }
+    else {
+        retval = Py_BuildValue("s#s#", key.data, key.size);
+        FREE_DBT(key);
+    }
+
+    return retval;
+}
+
+
+
+/* --------------------------------------------------------------------- */
+/* DBEnv methods */
+
+
+static PyObject*
+DBEnv_close(DBEnvObject* self, PyObject* args)
+{
+    int err, flags = 0;
+
+    if (!PyArg_ParseTuple(args, "|i:close", &flags))
+        return NULL;
+    if (!self->closed) {      /* Don't close more than once */
+        MYDB_BEGIN_ALLOW_THREADS;
+        err = self->db_env->close(self->db_env, flags);
+        MYDB_END_ALLOW_THREADS;
+        self->closed = 1;
+        self->db_env = NULL;
+        RETURN_IF_ERR();
+    }
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_open(DBEnvObject* self, PyObject* args)
+{
+    int err, flags=0, mode=0660;
+    char *db_home;
+
+    if (!PyArg_ParseTuple(args, "z|ii:open", &db_home, &flags, &mode))
+        return NULL;
+
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->open(self->db_env, db_home, flags, mode);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    self->closed = 0;
+    self->flags = flags;
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_remove(DBEnvObject* self, PyObject* args)
+{
+    int err, flags=0;
+    char *db_home;
+
+    if (!PyArg_ParseTuple(args, "s|i:remove", &db_home, &flags))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->remove(self->db_env, db_home, flags);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_set_cachesize(DBEnvObject* self, PyObject* args)
+{
+    int err, gbytes=0, bytes=0, ncache=0;
+
+    if (!PyArg_ParseTuple(args, "ii|i:set_cachesize",
+                          &gbytes, &bytes, &ncache))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_cachesize(self->db_env, gbytes, bytes, ncache);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+#if (DBVER >= 32)
+static PyObject*
+DBEnv_set_flags(DBEnvObject* self, PyObject* args)
+{
+    int err, flags=0, onoff=0;
+
+    if (!PyArg_ParseTuple(args, "ii:set_flags",
+                          &flags, &onoff))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_flags(self->db_env, flags, onoff);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+#endif
+
+
+static PyObject*
+DBEnv_set_data_dir(DBEnvObject* self, PyObject* args)
+{
+    int err;
+    char *dir;
+
+    if (!PyArg_ParseTuple(args, "s:set_data_dir", &dir))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_data_dir(self->db_env, dir);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_set_lg_bsize(DBEnvObject* self, PyObject* args)
+{
+    int err, lg_bsize;
+
+    if (!PyArg_ParseTuple(args, "i:set_lg_bsize", &lg_bsize))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_lg_bsize(self->db_env, lg_bsize);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_set_lg_dir(DBEnvObject* self, PyObject* args)
+{
+    int err;
+    char *dir;
+
+    if (!PyArg_ParseTuple(args, "s:set_lg_dir", &dir))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_lg_dir(self->db_env, dir);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+static PyObject*
+DBEnv_set_lg_max(DBEnvObject* self, PyObject* args)
+{
+    int err, lg_max;
+
+    if (!PyArg_ParseTuple(args, "i:set_lg_max", &lg_max))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_lg_max(self->db_env, lg_max);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_set_lk_detect(DBEnvObject* self, PyObject* args)
+{
+    int err, lk_detect;
+
+    if (!PyArg_ParseTuple(args, "i:set_lk_detect", &lk_detect))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_lk_detect(self->db_env, lk_detect);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_set_lk_max(DBEnvObject* self, PyObject* args)
+{
+    int err, max;
+
+    if (!PyArg_ParseTuple(args, "i:set_lk_max", &max))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_lk_max(self->db_env, max);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+#if (DBVER >= 32)
+
+static PyObject*
+DBEnv_set_lk_max_locks(DBEnvObject* self, PyObject* args)
+{
+    int err, max;
+
+    if (!PyArg_ParseTuple(args, "i:set_lk_max_locks", &max))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_lk_max_locks(self->db_env, max);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_set_lk_max_lockers(DBEnvObject* self, PyObject* args)
+{
+    int err, max;
+
+    if (!PyArg_ParseTuple(args, "i:set_lk_max_lockers", &max))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_lk_max_lockers(self->db_env, max);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_set_lk_max_objects(DBEnvObject* self, PyObject* args)
+{
+    int err, max;
+
+    if (!PyArg_ParseTuple(args, "i:set_lk_max_objects", &max))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_lk_max_objects(self->db_env, max);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+#endif
+
+
+static PyObject*
+DBEnv_set_mp_mmapsize(DBEnvObject* self, PyObject* args)
+{
+    int err, mp_mmapsize;
+
+    if (!PyArg_ParseTuple(args, "i:set_mp_mmapsize", &mp_mmapsize))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_mp_mmapsize(self->db_env, mp_mmapsize);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_set_tmp_dir(DBEnvObject* self, PyObject* args)
+{
+    int err;
+    char *dir;
+
+    if (!PyArg_ParseTuple(args, "s:set_tmp_dir", &dir))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_tmp_dir(self->db_env, dir);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_txn_begin(DBEnvObject* self, PyObject* args, PyObject* kwargs)
+{
+    int flags = 0;
+    PyObject* txnobj = NULL;
+    DB_TXN *txn = NULL;
+    char* kwnames[] = { "parent", "flags", NULL };
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|Oi:txn_begin", kwnames,
+                                     &txnobj, &flags))
+        return NULL;
+
+    if (!checkTxnObj(txnobj, &txn))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    return (PyObject*)newDBTxnObject(self, txn, flags);
+}
+
+
+static PyObject*
+DBEnv_txn_checkpoint(DBEnvObject* self, PyObject* args)
+{
+    int err, kbyte=0, min=0, flags=0;
+
+    if (!PyArg_ParseTuple(args, "|iii:txn_checkpoint", &kbyte, &min, &flags))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    err = self->db_env->txn_checkpoint(self->db_env, kbyte, min, flags);
+#else
+    err = txn_checkpoint(self->db_env, kbyte, min, flags);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_set_tx_max(DBEnvObject* self, PyObject* args)
+{
+    int err, max;
+
+    if (!PyArg_ParseTuple(args, "i:set_tx_max", &max))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = self->db_env->set_tx_max(self->db_env, max);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_lock_detect(DBEnvObject* self, PyObject* args)
+{
+    int err, atype, flags=0;
+    int aborted = 0;
+
+    if (!PyArg_ParseTuple(args, "i|i:lock_detect", &atype, &flags))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    err = self->db_env->lock_detect(self->db_env, flags, atype, &aborted);
+#else
+    err = lock_detect(self->db_env, flags, atype, &aborted);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    return PyInt_FromLong(aborted);
+}
+
+
+static PyObject*
+DBEnv_lock_get(DBEnvObject* self, PyObject* args)
+{
+    int flags=0;
+    int locker, lock_mode;
+    DBT obj;
+    PyObject* objobj;
+
+    if (!PyArg_ParseTuple(args, "iOi|i:lock_get", &locker, &objobj, &lock_mode, &flags))
+        return NULL;
+
+
+    if (!make_dbt(objobj, &obj))
+        return NULL;
+
+    return (PyObject*)newDBLockObject(self, locker, &obj, lock_mode, flags);
+}
+
+
+static PyObject*
+DBEnv_lock_id(DBEnvObject* self, PyObject* args)
+{
+    int err;
+    u_int32_t theID;
+
+    if (!PyArg_ParseTuple(args, ":lock_id"))
+        return NULL;
+
+    CHECK_ENV_NOT_CLOSED(self);
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    err = self->db_env->lock_id(self->db_env, &theID);
+#else
+    err = lock_id(self->db_env, &theID);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+
+    return PyInt_FromLong((long)theID);
+}
+
+
+static PyObject*
+DBEnv_lock_put(DBEnvObject* self, PyObject* args)
+{
+    int err;
+    DBLockObject* dblockobj;
+
+    if (!PyArg_ParseTuple(args, "O!:lock_put", &DBLock_Type, &dblockobj))
+        return NULL;
+
+    CHECK_ENV_NOT_CLOSED(self);
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    err = self->db_env->lock_put(self->db_env, &dblockobj->lock);
+#else
+    err = lock_put(self->db_env, &dblockobj->lock);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBEnv_lock_stat(DBEnvObject* self, PyObject* args)
+{
+    int err;
+    DB_LOCK_STAT* sp;
+    PyObject* d = NULL;
+    u_int32_t flags;
+
+    if (!PyArg_ParseTuple(args, "|i:lock_stat", &flags))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    err = self->db_env->lock_stat(self->db_env, &sp, flags);
+#else
+#if (DBVER >= 33)
+    err = lock_stat(self->db_env, &sp);
+#else
+    err = lock_stat(self->db_env, &sp, NULL);
+#endif
+#endif
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+
+    /* Turn the stat structure into a dictionary */
+    d = PyDict_New();
+    if (d == NULL) {
+        free(sp);
+        return NULL;
+    }
+
+#define MAKE_ENTRY(name)  _addIntToDict(d, #name, sp->st_##name)
+
+    MAKE_ENTRY(lastid);
+    MAKE_ENTRY(nmodes);
+#if (DBVER >= 32)
+    MAKE_ENTRY(maxlocks);
+    MAKE_ENTRY(maxlockers);
+    MAKE_ENTRY(maxobjects);
+    MAKE_ENTRY(nlocks);
+    MAKE_ENTRY(maxnlocks);
+#endif
+    MAKE_ENTRY(nlockers);
+    MAKE_ENTRY(maxnlockers);
+#if (DBVER >= 32)
+    MAKE_ENTRY(nobjects);
+    MAKE_ENTRY(maxnobjects);
+#endif
+    MAKE_ENTRY(nrequests);
+    MAKE_ENTRY(nreleases);
+    MAKE_ENTRY(nnowaits);
+    MAKE_ENTRY(nconflicts);
+    MAKE_ENTRY(ndeadlocks);
+    MAKE_ENTRY(regsize);
+    MAKE_ENTRY(region_wait);
+    MAKE_ENTRY(region_nowait);
+
+#undef MAKE_ENTRY
+    free(sp);
+    return d;
+}
+
+
+static PyObject*
+DBEnv_log_archive(DBEnvObject* self, PyObject* args)
+{
+    int flags=0;
+    int err;
+    char **log_list_start, **log_list;
+    PyObject* list;
+    PyObject* item = NULL;
+
+    if (!PyArg_ParseTuple(args, "|i:log_archive", &flags))
+        return NULL;
+
+    CHECK_ENV_NOT_CLOSED(self);
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    err = self->db_env->log_archive(self->db_env, &log_list, flags);
+#elif (DBVER == 33)
+    err = log_archive(self->db_env, &log_list, flags);
+#else
+    err = log_archive(self->db_env, &log_list, flags, NULL);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+
+    list = PyList_New(0);
+    if (list == NULL) {
+        PyErr_SetString(PyExc_MemoryError, "PyList_New failed");
+        return NULL;
+    }
+
+    if (log_list) {
+        for (log_list_start = log_list; *log_list != NULL; ++log_list) {
+            item = PyString_FromString (*log_list);
+            if (item == NULL) {
+                Py_DECREF(list);
+                PyErr_SetString(PyExc_MemoryError, "List item creation failed");
+                list = NULL;
+                break;
+            }
+            PyList_Append(list, item);
+            Py_DECREF(item);
+        }
+        free(log_list_start);
+    }
+    return list;
+}
+
+
+static PyObject*
+DBEnv_txn_stat(DBEnvObject* self, PyObject* args)
+{
+    int err;
+    DB_TXN_STAT* sp;
+    PyObject* d = NULL;
+    u_int32_t flags;
+
+    if (!PyArg_ParseTuple(args, "|i:txn_stat", &flags))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    err = self->db_env->txn_stat(self->db_env, &sp, flags);
+#elif (DBVER == 33)
+    err = txn_stat(self->db_env, &sp);
+#else
+    err = txn_stat(self->db_env, &sp, NULL);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+
+    /* Turn the stat structure into a dictionary */
+    d = PyDict_New();
+    if (d == NULL) {
+        free(sp);
+        return NULL;
+    }
+
+#define MAKE_ENTRY(name)  _addIntToDict(d, #name, sp->st_##name)
+
+    MAKE_ENTRY(time_ckp);
+    MAKE_ENTRY(last_txnid);
+    MAKE_ENTRY(maxtxns);
+    MAKE_ENTRY(nactive);
+    MAKE_ENTRY(maxnactive);
+    MAKE_ENTRY(nbegins);
+    MAKE_ENTRY(naborts);
+    MAKE_ENTRY(ncommits);
+    MAKE_ENTRY(regsize);
+    MAKE_ENTRY(region_wait);
+    MAKE_ENTRY(region_nowait);
+
+#undef MAKE_ENTRY
+    free(sp);
+    return d;
+}
+
+
+static PyObject*
+DBEnv_set_get_returns_none(DBEnvObject* self, PyObject* args)
+{
+    int flags=0;
+    int oldValue;
+
+    if (!PyArg_ParseTuple(args,"i:set_get_returns_none", &flags))
+        return NULL;
+    CHECK_ENV_NOT_CLOSED(self);
+
+    oldValue = self->getReturnsNone;
+    self->getReturnsNone = flags;
+    return PyInt_FromLong(oldValue);
+}
+
+
+/* --------------------------------------------------------------------- */
+/* DBTxn methods */
+
+
+static PyObject*
+DBTxn_commit(DBTxnObject* self, PyObject* args)
+{
+    int flags=0, err;
+
+    if (!PyArg_ParseTuple(args, "|i:commit", &flags))
+        return NULL;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    err = self->txn->commit(self->txn, flags);
+#else
+    err = txn_commit(self->txn, flags);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+static PyObject*
+DBTxn_prepare(DBTxnObject* self, PyObject* args)
+{
+#if (DBVER >= 33)
+    int err;
+    char* gid=NULL;
+    int   gid_size=0;
+
+    if (!PyArg_ParseTuple(args, "s#:prepare", &gid, &gid_size))
+        return NULL;
+
+    if (gid_size != DB_XIDDATASIZE) {
+        PyErr_SetString(PyExc_TypeError,
+                        "gid must be DB_XIDDATASIZE bytes long");
+        return NULL;
+    }
+
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    err = self->txn->prepare(self->txn, (u_int8_t*)gid);
+#else
+    err = txn_prepare(self->txn, (u_int8_t*)gid);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+#else
+    int err;
+
+    if (!PyArg_ParseTuple(args, ":prepare"))
+        return NULL;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+    err = txn_prepare(self->txn);
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+#endif
+}
+
+
+static PyObject*
+DBTxn_abort(DBTxnObject* self, PyObject* args)
+{
+    int err;
+
+    if (!PyArg_ParseTuple(args, ":abort"))
+        return NULL;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    err = self->txn->abort(self->txn);
+#else
+    err = txn_abort(self->txn);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    RETURN_IF_ERR();
+    RETURN_NONE();
+}
+
+
+static PyObject*
+DBTxn_id(DBTxnObject* self, PyObject* args)
+{
+    int id;
+
+    if (!PyArg_ParseTuple(args, ":id"))
+        return NULL;
+
+    MYDB_BEGIN_ALLOW_THREADS;
+#if (DBVER >= 40)
+    id = self->txn->id(self->txn);
+#else
+    id = txn_id(self->txn);
+#endif
+    MYDB_END_ALLOW_THREADS;
+    return PyInt_FromLong(id);
+}
+
+/* --------------------------------------------------------------------- */
+/* Method definition tables and type objects */
+
+static PyMethodDef DB_methods[] = {
+    {"append",          (PyCFunction)DB_append,         METH_VARARGS},
+#if (DBVER >= 33)
+    {"associate",       (PyCFunction)DB_associate,      METH_VARARGS|METH_KEYWORDS},
+#endif
+    {"close",           (PyCFunction)DB_close,          METH_VARARGS},
+#if (DBVER >= 32)
+    {"consume",         (PyCFunction)DB_consume,        METH_VARARGS|METH_KEYWORDS},
+    {"consume_wait",    (PyCFunction)DB_consume_wait,   METH_VARARGS|METH_KEYWORDS},
+#endif
+    {"cursor",          (PyCFunction)DB_cursor,         METH_VARARGS|METH_KEYWORDS},
+    {"delete",          (PyCFunction)DB_delete,         METH_VARARGS|METH_KEYWORDS},
+    {"fd",              (PyCFunction)DB_fd,             METH_VARARGS},
+    {"get",             (PyCFunction)DB_get,            METH_VARARGS|METH_KEYWORDS},
+    {"get_both",        (PyCFunction)DB_get_both,       METH_VARARGS|METH_KEYWORDS},
+    {"get_byteswapped", (PyCFunction)DB_get_byteswapped,METH_VARARGS},
+    {"get_size",        (PyCFunction)DB_get_size,       METH_VARARGS|METH_KEYWORDS},
+    {"get_type",        (PyCFunction)DB_get_type,       METH_VARARGS},
+    {"join",            (PyCFunction)DB_join,           METH_VARARGS},
+    {"key_range",       (PyCFunction)DB_key_range,      METH_VARARGS|METH_KEYWORDS},
+    {"has_key",         (PyCFunction)DB_has_key,        METH_VARARGS},
+    {"items",           (PyCFunction)DB_items,          METH_VARARGS},
+    {"keys",            (PyCFunction)DB_keys,           METH_VARARGS},
+    {"open",            (PyCFunction)DB_open,           METH_VARARGS|METH_KEYWORDS},
+    {"put",             (PyCFunction)DB_put,            METH_VARARGS|METH_KEYWORDS},
+    {"remove",          (PyCFunction)DB_remove,         METH_VARARGS|METH_KEYWORDS},
+    {"rename",          (PyCFunction)DB_rename,         METH_VARARGS},
+    {"set_bt_minkey",   (PyCFunction)DB_set_bt_minkey,  METH_VARARGS},
+    {"set_cachesize",   (PyCFunction)DB_set_cachesize,  METH_VARARGS},
+    {"set_flags",       (PyCFunction)DB_set_flags,      METH_VARARGS},
+    {"set_h_ffactor",   (PyCFunction)DB_set_h_ffactor,  METH_VARARGS},
+    {"set_h_nelem",     (PyCFunction)DB_set_h_nelem,    METH_VARARGS},
+    {"set_lorder",      (PyCFunction)DB_set_lorder,     METH_VARARGS},
+    {"set_pagesize",    (PyCFunction)DB_set_pagesize,   METH_VARARGS},
+    {"set_re_delim",    (PyCFunction)DB_set_re_delim,   METH_VARARGS},
+    {"set_re_len",      (PyCFunction)DB_set_re_len,     METH_VARARGS},
+    {"set_re_pad",      (PyCFunction)DB_set_re_pad,     METH_VARARGS},
+    {"set_re_source",   (PyCFunction)DB_set_re_source,  METH_VARARGS},
+#if (DBVER >= 32)
+    {"set_q_extentsize",(PyCFunction)DB_set_q_extentsize,METH_VARARGS},
+#endif
+    {"stat",            (PyCFunction)DB_stat,           METH_VARARGS},
+    {"sync",            (PyCFunction)DB_sync,           METH_VARARGS},
+#if (DBVER >= 33)
+    {"truncate",        (PyCFunction)DB_truncate,       METH_VARARGS},
+#endif
+    {"type",            (PyCFunction)DB_get_type,       METH_VARARGS},
+    {"upgrade",         (PyCFunction)DB_upgrade,        METH_VARARGS},
+    {"values",          (PyCFunction)DB_values,         METH_VARARGS},
+    {"verify",          (PyCFunction)DB_verify,         METH_VARARGS|METH_KEYWORDS},
+    {"set_get_returns_none",(PyCFunction)DB_set_get_returns_none,      METH_VARARGS},
+    {NULL,      NULL}       /* sentinel */
+};
+
+
+static PyMappingMethods DB_mapping = {
+        (inquiry)DB_length,          /*mp_length*/
+        (binaryfunc)DB_subscript,    /*mp_subscript*/
+        (objobjargproc)DB_ass_sub,   /*mp_ass_subscript*/
+};
+
+
+static PyMethodDef DBCursor_methods[] = {
+    {"close",           (PyCFunction)DBC_close,         METH_VARARGS},
+    {"count",           (PyCFunction)DBC_count,         METH_VARARGS},
+    {"current",         (PyCFunction)DBC_current,       METH_VARARGS},
+    {"delete",          (PyCFunction)DBC_delete,        METH_VARARGS},
+    {"dup",             (PyCFunction)DBC_dup,           METH_VARARGS},
+    {"first",           (PyCFunction)DBC_first,         METH_VARARGS},
+    {"get",             (PyCFunction)DBC_get,           METH_VARARGS},
+    {"get_recno",       (PyCFunction)DBC_get_recno,     METH_VARARGS},
+    {"last",            (PyCFunction)DBC_last,          METH_VARARGS},
+    {"next",            (PyCFunction)DBC_next,          METH_VARARGS},
+    {"prev",            (PyCFunction)DBC_prev,          METH_VARARGS},
+    {"put",             (PyCFunction)DBC_put,           METH_VARARGS},
+    {"set",             (PyCFunction)DBC_set,           METH_VARARGS},
+    {"set_range",       (PyCFunction)DBC_set_range,     METH_VARARGS},
+    {"get_both",        (PyCFunction)DBC_get_both,      METH_VARARGS},
+    {"set_both",        (PyCFunction)DBC_get_both,      METH_VARARGS},
+    {"set_recno",       (PyCFunction)DBC_set_recno,     METH_VARARGS},
+    {"consume",         (PyCFunction)DBC_consume,       METH_VARARGS},
+    {"next_dup",        (PyCFunction)DBC_next_dup,      METH_VARARGS},
+    {"next_nodup",      (PyCFunction)DBC_next_nodup,    METH_VARARGS},
+    {"prev_nodup",      (PyCFunction)DBC_prev_nodup,    METH_VARARGS},
+    {"join_item",       (PyCFunction)DBC_join_item,     METH_VARARGS},
+    {NULL,      NULL}       /* sentinel */
+};
+
+
+static PyMethodDef DBEnv_methods[] = {
+    {"close",           (PyCFunction)DBEnv_close,            METH_VARARGS},
+    {"open",            (PyCFunction)DBEnv_open,             METH_VARARGS},
+    {"remove",          (PyCFunction)DBEnv_remove,           METH_VARARGS},
+    {"set_cachesize",   (PyCFunction)DBEnv_set_cachesize,    METH_VARARGS},
+    {"set_data_dir",    (PyCFunction)DBEnv_set_data_dir,     METH_VARARGS},
+#if (DBVER >= 32)
+    {"set_flags",       (PyCFunction)DBEnv_set_flags,        METH_VARARGS},
+#endif
+    {"set_lg_bsize",    (PyCFunction)DBEnv_set_lg_bsize,     METH_VARARGS},
+    {"set_lg_dir",      (PyCFunction)DBEnv_set_lg_dir,       METH_VARARGS},
+    {"set_lg_max",      (PyCFunction)DBEnv_set_lg_max,       METH_VARARGS},
+    {"set_lk_detect",   (PyCFunction)DBEnv_set_lk_detect,    METH_VARARGS},
+    {"set_lk_max",      (PyCFunction)DBEnv_set_lk_max,       METH_VARARGS},
+#if (DBVER >= 32)
+    {"set_lk_max_locks", (PyCFunction)DBEnv_set_lk_max_locks, METH_VARARGS},
+    {"set_lk_max_lockers", (PyCFunction)DBEnv_set_lk_max_lockers, METH_VARARGS},
+    {"set_lk_max_objects", (PyCFunction)DBEnv_set_lk_max_objects, METH_VARARGS},
+#endif
+    {"set_mp_mmapsize", (PyCFunction)DBEnv_set_mp_mmapsize,  METH_VARARGS},
+    {"set_tmp_dir",     (PyCFunction)DBEnv_set_tmp_dir,      METH_VARARGS},
+    {"txn_begin",       (PyCFunction)DBEnv_txn_begin,        METH_VARARGS|METH_KEYWORDS},
+    {"txn_checkpoint",  (PyCFunction)DBEnv_txn_checkpoint,   METH_VARARGS},
+    {"txn_stat",        (PyCFunction)DBEnv_txn_stat,         METH_VARARGS},
+    {"set_tx_max",      (PyCFunction)DBEnv_set_tx_max,       METH_VARARGS},
+    {"lock_detect",     (PyCFunction)DBEnv_lock_detect,      METH_VARARGS},
+    {"lock_get",        (PyCFunction)DBEnv_lock_get,         METH_VARARGS},
+    {"lock_id",         (PyCFunction)DBEnv_lock_id,          METH_VARARGS},
+    {"lock_put",        (PyCFunction)DBEnv_lock_put,         METH_VARARGS},
+    {"lock_stat",       (PyCFunction)DBEnv_lock_stat,        METH_VARARGS},
+    {"log_archive",     (PyCFunction)DBEnv_log_archive,      METH_VARARGS},
+    {"set_get_returns_none",(PyCFunction)DBEnv_set_get_returns_none, METH_VARARGS},
+    {NULL,      NULL}       /* sentinel */
+};
+
+
+static PyMethodDef DBTxn_methods[] = {
+    {"commit",          (PyCFunction)DBTxn_commit,      METH_VARARGS},
+    {"prepare",         (PyCFunction)DBTxn_prepare,     METH_VARARGS},
+    {"abort",           (PyCFunction)DBTxn_abort,       METH_VARARGS},
+    {"id",              (PyCFunction)DBTxn_id,          METH_VARARGS},
+    {NULL,      NULL}       /* sentinel */
+};
+
+
+static PyObject*
+DB_getattr(DBObject* self, char *name)
+{
+    return Py_FindMethod(DB_methods, (PyObject* )self, name);
+}
+
+
+static PyObject*
+DBEnv_getattr(DBEnvObject* self, char *name)
+{
+    if (!strcmp(name, "db_home")) {
+        CHECK_ENV_NOT_CLOSED(self);
+        if (self->db_env->db_home == NULL) {
+            RETURN_NONE();
+        }
+        return PyString_FromString(self->db_env->db_home);
+    }
+
+    return Py_FindMethod(DBEnv_methods, (PyObject* )self, name);
+}
+
+
+static PyObject*
+DBCursor_getattr(DBCursorObject* self, char *name)
+{
+    return Py_FindMethod(DBCursor_methods, (PyObject* )self, name);
+}
+
+static PyObject*
+DBTxn_getattr(DBTxnObject* self, char *name)
+{
+    return Py_FindMethod(DBTxn_methods, (PyObject* )self, name);
+}
+
+static PyObject*
+DBLock_getattr(DBLockObject* self, char *name)
+{
+    return NULL;
+}
+
+statichere PyTypeObject DB_Type = {
+    PyObject_HEAD_INIT(NULL)
+    0,                  /*ob_size*/
+    "DB",               /*tp_name*/
+    sizeof(DBObject),   /*tp_basicsize*/
+    0,                  /*tp_itemsize*/
+    /* methods */
+    (destructor)DB_dealloc, /*tp_dealloc*/
+    0,                  /*tp_print*/
+    (getattrfunc)DB_getattr, /*tp_getattr*/
+    0,                      /*tp_setattr*/
+    0,          /*tp_compare*/
+    0,          /*tp_repr*/
+    0,          /*tp_as_number*/
+    0,          /*tp_as_sequence*/
+    &DB_mapping,/*tp_as_mapping*/
+    0,          /*tp_hash*/
+};
+
+
+statichere PyTypeObject DBCursor_Type = {
+    PyObject_HEAD_INIT(NULL)
+    0,                  /*ob_size*/
+    "DBCursor",         /*tp_name*/
+    sizeof(DBCursorObject),  /*tp_basicsize*/
+    0,                  /*tp_itemsize*/
+    /* methods */
+    (destructor)DBCursor_dealloc,/*tp_dealloc*/
+    0,                  /*tp_print*/
+    (getattrfunc)DBCursor_getattr, /*tp_getattr*/
+    0,                  /*tp_setattr*/
+    0,                  /*tp_compare*/
+    0,                  /*tp_repr*/
+    0,                  /*tp_as_number*/
+    0,                  /*tp_as_sequence*/
+    0,                  /*tp_as_mapping*/
+    0,                  /*tp_hash*/
+};
+
+
+statichere PyTypeObject DBEnv_Type = {
+    PyObject_HEAD_INIT(NULL)
+    0,          /*ob_size*/
+    "DBEnv",            /*tp_name*/
+    sizeof(DBEnvObject),    /*tp_basicsize*/
+    0,          /*tp_itemsize*/
+    /* methods */
+    (destructor)DBEnv_dealloc, /*tp_dealloc*/
+    0,          /*tp_print*/
+    (getattrfunc)DBEnv_getattr, /*tp_getattr*/
+    0,          /*tp_setattr*/
+    0,          /*tp_compare*/
+    0,          /*tp_repr*/
+    0,          /*tp_as_number*/
+    0,          /*tp_as_sequence*/
+    0,          /*tp_as_mapping*/
+    0,          /*tp_hash*/
+};
+
+statichere PyTypeObject DBTxn_Type = {
+    PyObject_HEAD_INIT(NULL)
+    0,          /*ob_size*/
+    "DBTxn",    /*tp_name*/
+    sizeof(DBTxnObject),  /*tp_basicsize*/
+    0,          /*tp_itemsize*/
+    /* methods */
+    (destructor)DBTxn_dealloc, /*tp_dealloc*/
+    0,          /*tp_print*/
+    (getattrfunc)DBTxn_getattr, /*tp_getattr*/
+    0,                      /*tp_setattr*/
+    0,          /*tp_compare*/
+    0,          /*tp_repr*/
+    0,          /*tp_as_number*/
+    0,          /*tp_as_sequence*/
+    0,          /*tp_as_mapping*/
+    0,          /*tp_hash*/
+};
+
+
+statichere PyTypeObject DBLock_Type = {
+    PyObject_HEAD_INIT(NULL)
+    0,          /*ob_size*/
+    "DBLock",   /*tp_name*/
+    sizeof(DBLockObject),  /*tp_basicsize*/
+    0,          /*tp_itemsize*/
+    /* methods */
+    (destructor)DBLock_dealloc, /*tp_dealloc*/
+    0,          /*tp_print*/
+    (getattrfunc)DBLock_getattr, /*tp_getattr*/
+    0,                      /*tp_setattr*/
+    0,          /*tp_compare*/
+    0,          /*tp_repr*/
+    0,          /*tp_as_number*/
+    0,          /*tp_as_sequence*/
+    0,          /*tp_as_mapping*/
+    0,          /*tp_hash*/
+};
+
+
+/* --------------------------------------------------------------------- */
+/* Module-level functions */
+
+static PyObject*
+DB_construct(PyObject* self, PyObject* args, PyObject* kwargs)
+{
+    PyObject* dbenvobj = NULL;
+    int flags = 0;
+    char* kwnames[] = { "dbEnv", "flags", NULL};
+
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|Oi:DB", kwnames, &dbenvobj, &flags))
+        return NULL;
+    if (dbenvobj == Py_None)
+        dbenvobj = NULL;
+    else if (dbenvobj && !DBEnvObject_Check(dbenvobj)) {
+        makeTypeError("DBEnv", dbenvobj);
+        return NULL;
+    }
+
+    return (PyObject* )newDBObject((DBEnvObject*)dbenvobj, flags);
+}
+
+
+static PyObject*
+DBEnv_construct(PyObject* self, PyObject* args)
+{
+    int flags = 0;
+    if (!PyArg_ParseTuple(args, "|i:DbEnv", &flags)) return NULL;
+    return (PyObject* )newDBEnvObject(flags);
+}
+
+
+static char bsddb_version_doc[] =
+"Returns a tuple of major, minor, and patch release numbers of the\n\
+underlying DB library.";
+
+static PyObject*
+bsddb_version(PyObject* self, PyObject* args)
+{
+    int major, minor, patch;
+
+        if (!PyArg_ParseTuple(args, ":version"))
+        return NULL;
+        db_version(&major, &minor, &patch);
+        return Py_BuildValue("(iii)", major, minor, patch);
+}
+
+
+/* List of functions defined in the module */
+
+static PyMethodDef bsddb_methods[] = {
+    {"DB",      (PyCFunction)DB_construct,      METH_VARARGS | METH_KEYWORDS },
+    {"DBEnv",   (PyCFunction)DBEnv_construct,   METH_VARARGS},
+    {"version", (PyCFunction)bsddb_version,     METH_VARARGS, bsddb_version_doc},
+    {NULL,      NULL}       /* sentinel */
+};
+
+
+/* --------------------------------------------------------------------- */
+/* Module initialization */
+
+
+/* Convenience routine to export an integer value.
+ * Errors are silently ignored, for better or for worse...
+ */
+#define ADD_INT(dict, NAME)         _addIntToDict(dict, #NAME, NAME)
+
+
+
+DL_EXPORT(void) init_rpmdb(void)
+{
+    PyObject* m;
+    PyObject* d;
+    PyObject* o;
+
+    /* Initialize the type of the new type objects here; doing it here
+       is required for portability to Windows without requiring C++. */
+    DB_Type.ob_type = &PyType_Type;
+    DBCursor_Type.ob_type = &PyType_Type;
+    DBEnv_Type.ob_type = &PyType_Type;
+    DBTxn_Type.ob_type = &PyType_Type;
+    DBLock_Type.ob_type = &PyType_Type;
+
+
+#ifdef WITH_THREAD
+    /* Save the current interpreter, so callbacks can do the right thing. */
+    _db_interpreterState = PyThreadState_Get()->interp;
+#endif
+
+    /* Create the module and add the functions */
+    m = Py_InitModule("_db", bsddb_methods);
+
+    /* Add some symbolic constants to the module */
+    d = PyModule_GetDict(m);
+    PyDict_SetItemString(d, "__version__",
+                         o=PyString_FromString(PY_BSDDB_VERSION));
+    Py_DECREF(o);
+    PyDict_SetItemString(d, "cvsid", o=PyString_FromString(rcs_id));
+    Py_DECREF(o);
+    PyDict_SetItemString(d, "DB_VERSION_STRING",
+                         o=PyString_FromString( DB_VERSION_STRING ));
+    Py_DECREF(o);
+
+    ADD_INT(d, DB_VERSION_MAJOR);
+    ADD_INT(d, DB_VERSION_MINOR);
+    ADD_INT(d, DB_VERSION_PATCH);
+
+    ADD_INT(d, DB_MAX_PAGES);
+    ADD_INT(d, DB_MAX_RECORDS);
+
+    ADD_INT(d, DB_CLIENT);
+    ADD_INT(d, DB_XA_CREATE);
+
+    ADD_INT(d, DB_CREATE);
+    ADD_INT(d, DB_NOMMAP);
+    ADD_INT(d, DB_THREAD);
+
+    ADD_INT(d, DB_FORCE);
+    ADD_INT(d, DB_INIT_CDB);
+    ADD_INT(d, DB_INIT_LOCK);
+    ADD_INT(d, DB_INIT_LOG);
+    ADD_INT(d, DB_INIT_MPOOL);
+    ADD_INT(d, DB_INIT_TXN);
+#if (DBVER >= 32)
+    ADD_INT(d, DB_JOINENV);
+#endif
+
+    ADD_INT(d, DB_RECOVER);
+    ADD_INT(d, DB_RECOVER_FATAL);
+    ADD_INT(d, DB_TXN_NOSYNC);
+    ADD_INT(d, DB_USE_ENVIRON);
+    ADD_INT(d, DB_USE_ENVIRON_ROOT);
+
+    ADD_INT(d, DB_LOCKDOWN);
+    ADD_INT(d, DB_PRIVATE);
+    ADD_INT(d, DB_SYSTEM_MEM);
+
+    ADD_INT(d, DB_TXN_SYNC);
+    ADD_INT(d, DB_TXN_NOWAIT);
+
+    ADD_INT(d, DB_EXCL);
+    ADD_INT(d, DB_FCNTL_LOCKING);
+    ADD_INT(d, DB_ODDFILESIZE);
+    ADD_INT(d, DB_RDWRMASTER);
+    ADD_INT(d, DB_RDONLY);
+    ADD_INT(d, DB_TRUNCATE);
+#if (DBVER >= 32)
+    ADD_INT(d, DB_EXTENT);
+    ADD_INT(d, DB_CDB_ALLDB);
+    ADD_INT(d, DB_VERIFY);
+#endif
+    ADD_INT(d, DB_UPGRADE);
+
+    ADD_INT(d, DB_AGGRESSIVE);
+    ADD_INT(d, DB_NOORDERCHK);
+    ADD_INT(d, DB_ORDERCHKONLY);
+    ADD_INT(d, DB_PR_PAGE);
+#if ! (DBVER >= 33)
+    ADD_INT(d, DB_VRFY_FLAGMASK);
+    ADD_INT(d, DB_PR_HEADERS);
+#endif
+    ADD_INT(d, DB_PR_RECOVERYTEST);
+    ADD_INT(d, DB_SALVAGE);
+
+    ADD_INT(d, DB_LOCK_NORUN);
+    ADD_INT(d, DB_LOCK_DEFAULT);
+    ADD_INT(d, DB_LOCK_OLDEST);
+    ADD_INT(d, DB_LOCK_RANDOM);
+    ADD_INT(d, DB_LOCK_YOUNGEST);
+#if (DBVER >= 33)
+    ADD_INT(d, DB_LOCK_MAXLOCKS);
+    ADD_INT(d, DB_LOCK_MINLOCKS);
+    ADD_INT(d, DB_LOCK_MINWRITE);
+#endif
+
+
+#if (DBVER >= 33)
+    _addIntToDict(d, "DB_LOCK_CONFLICT", 0);   /* docs say to use zero instead */
+#else
+    ADD_INT(d, DB_LOCK_CONFLICT);
+#endif
+
+    ADD_INT(d, DB_LOCK_DUMP);
+    ADD_INT(d, DB_LOCK_GET);
+    ADD_INT(d, DB_LOCK_INHERIT);
+    ADD_INT(d, DB_LOCK_PUT);
+    ADD_INT(d, DB_LOCK_PUT_ALL);
+    ADD_INT(d, DB_LOCK_PUT_OBJ);
+
+    ADD_INT(d, DB_LOCK_NG);
+    ADD_INT(d, DB_LOCK_READ);
+    ADD_INT(d, DB_LOCK_WRITE);
+    ADD_INT(d, DB_LOCK_NOWAIT);
+#if (DBVER >= 32)
+    ADD_INT(d, DB_LOCK_WAIT);
+#endif
+    ADD_INT(d, DB_LOCK_IWRITE);
+    ADD_INT(d, DB_LOCK_IREAD);
+    ADD_INT(d, DB_LOCK_IWR);
+#if (DBVER >= 33)
+    ADD_INT(d, DB_LOCK_DIRTY);
+    ADD_INT(d, DB_LOCK_WWRITE);
+#endif
+
+    ADD_INT(d, DB_LOCK_RECORD);
+    ADD_INT(d, DB_LOCK_UPGRADE);
+#if (DBVER >= 32)
+    ADD_INT(d, DB_LOCK_SWITCH);
+#endif
+#if (DBVER >= 33)
+    ADD_INT(d, DB_LOCK_UPGRADE_WRITE);
+#endif
+
+    ADD_INT(d, DB_LOCK_NOWAIT);
+    ADD_INT(d, DB_LOCK_RECORD);
+    ADD_INT(d, DB_LOCK_UPGRADE);
+
+#if (DBVER >= 33)
+    ADD_INT(d, DB_LSTAT_ABORTED);
+    ADD_INT(d, DB_LSTAT_ERR);
+    ADD_INT(d, DB_LSTAT_FREE);
+    ADD_INT(d, DB_LSTAT_HELD);
+#if (DBVER == 33)
+    ADD_INT(d, DB_LSTAT_NOGRANT);
+#endif
+    ADD_INT(d, DB_LSTAT_PENDING);
+    ADD_INT(d, DB_LSTAT_WAITING);
+#endif
+
+    ADD_INT(d, DB_ARCH_ABS);
+    ADD_INT(d, DB_ARCH_DATA);
+    ADD_INT(d, DB_ARCH_LOG);
+
+    ADD_INT(d, DB_BTREE);
+    ADD_INT(d, DB_HASH);
+    ADD_INT(d, DB_RECNO);
+    ADD_INT(d, DB_QUEUE);
+    ADD_INT(d, DB_UNKNOWN);
+
+    ADD_INT(d, DB_DUP);
+    ADD_INT(d, DB_DUPSORT);
+    ADD_INT(d, DB_RECNUM);
+    ADD_INT(d, DB_RENUMBER);
+    ADD_INT(d, DB_REVSPLITOFF);
+    ADD_INT(d, DB_SNAPSHOT);
+
+    ADD_INT(d, DB_JOIN_NOSORT);
+
+    ADD_INT(d, DB_AFTER);
+    ADD_INT(d, DB_APPEND);
+    ADD_INT(d, DB_BEFORE);
+    ADD_INT(d, DB_CACHED_COUNTS);
+    ADD_INT(d, DB_CHECKPOINT);
+#if (DBVER >= 33)
+    ADD_INT(d, DB_COMMIT);
+#endif
+    ADD_INT(d, DB_CONSUME);
+#if (DBVER >= 32)
+    ADD_INT(d, DB_CONSUME_WAIT);
+#endif
+    ADD_INT(d, DB_CURLSN);
+    ADD_INT(d, DB_CURRENT);
+#if (DBVER >= 33)
+    ADD_INT(d, DB_FAST_STAT);
+#endif
+    ADD_INT(d, DB_FIRST);
+    ADD_INT(d, DB_FLUSH);
+    ADD_INT(d, DB_GET_BOTH);
+    ADD_INT(d, DB_GET_RECNO);
+    ADD_INT(d, DB_JOIN_ITEM);
+    ADD_INT(d, DB_KEYFIRST);
+    ADD_INT(d, DB_KEYLAST);
+    ADD_INT(d, DB_LAST);
+    ADD_INT(d, DB_NEXT);
+    ADD_INT(d, DB_NEXT_DUP);
+    ADD_INT(d, DB_NEXT_NODUP);
+    ADD_INT(d, DB_NODUPDATA);
+    ADD_INT(d, DB_NOOVERWRITE);
+    ADD_INT(d, DB_NOSYNC);
+    ADD_INT(d, DB_POSITION);
+    ADD_INT(d, DB_PREV);
+    ADD_INT(d, DB_PREV_NODUP);
+    ADD_INT(d, DB_RECORDCOUNT);
+    ADD_INT(d, DB_SET);
+    ADD_INT(d, DB_SET_RANGE);
+    ADD_INT(d, DB_SET_RECNO);
+    ADD_INT(d, DB_WRITECURSOR);
+
+    ADD_INT(d, DB_OPFLAGS_MASK);
+    ADD_INT(d, DB_RMW);
+#if (DBVER >= 33)
+    ADD_INT(d, DB_DIRTY_READ);
+    ADD_INT(d, DB_MULTIPLE);
+    ADD_INT(d, DB_MULTIPLE_KEY);
+#endif
+
+#if (DBVER >= 33)
+    ADD_INT(d, DB_DONOTINDEX);
+#endif
+
+    ADD_INT(d, DB_INCOMPLETE);
+    ADD_INT(d, DB_KEYEMPTY);
+    ADD_INT(d, DB_KEYEXIST);
+    ADD_INT(d, DB_LOCK_DEADLOCK);
+    ADD_INT(d, DB_LOCK_NOTGRANTED);
+    ADD_INT(d, DB_NOSERVER);
+    ADD_INT(d, DB_NOSERVER_HOME);
+    ADD_INT(d, DB_NOSERVER_ID);
+    ADD_INT(d, DB_NOTFOUND);
+    ADD_INT(d, DB_OLD_VERSION);
+    ADD_INT(d, DB_RUNRECOVERY);
+    ADD_INT(d, DB_VERIFY_BAD);
+#if (DBVER >= 33)
+    ADD_INT(d, DB_PAGE_NOTFOUND);
+    ADD_INT(d, DB_SECONDARY_BAD);
+#endif
+#if (DBVER >= 40)
+    ADD_INT(d, DB_STAT_CLEAR);
+    ADD_INT(d, DB_REGION_INIT);
+    ADD_INT(d, DB_NOLOCKING);
+    ADD_INT(d, DB_YIELDCPU);
+    ADD_INT(d, DB_PANIC_ENVIRONMENT);
+    ADD_INT(d, DB_NOPANIC);
+#endif
+
+    ADD_INT(d, EINVAL);
+    ADD_INT(d, EACCES);
+    ADD_INT(d, ENOSPC);
+    ADD_INT(d, ENOMEM);
+    ADD_INT(d, EAGAIN);
+    ADD_INT(d, EBUSY);
+    ADD_INT(d, EEXIST);
+    ADD_INT(d, ENOENT);
+    ADD_INT(d, EPERM);
+
+
+
+    /* The base exception class is DBError */
+    DBError = PyErr_NewException("rpmdb._rpmdb.DBError", NULL, NULL);
+    PyDict_SetItemString(d, "DBError", DBError);
+
+    /* Some magic to make DBNotFoundError derive from both DBError and
+       KeyError, since the API only supports using one base class. */
+    PyDict_SetItemString(d, "KeyError", PyExc_KeyError);
+    PyRun_String("class DBNotFoundError(DBError, KeyError): pass",
+                 Py_file_input, d, d);
+    DBNotFoundError = PyDict_GetItemString(d, "DBNotFoundError");
+    PyDict_DelItemString(d, "KeyError");
+
+
+    /* All the rest of the exceptions derive only from DBError */
+#define MAKE_EX(name)   name = PyErr_NewException("rpmdb._rpmdb." #name, DBError, NULL); \
+                        PyDict_SetItemString(d, #name, name)
+
+#if !INCOMPLETE_IS_WARNING
+    MAKE_EX(DBIncompleteError);
+#endif
+    MAKE_EX(DBKeyEmptyError);
+    MAKE_EX(DBKeyExistError);
+    MAKE_EX(DBLockDeadlockError);
+    MAKE_EX(DBLockNotGrantedError);
+    MAKE_EX(DBOldVersionError);
+    MAKE_EX(DBRunRecoveryError);
+    MAKE_EX(DBVerifyBadError);
+    MAKE_EX(DBNoServerError);
+    MAKE_EX(DBNoServerHomeError);
+    MAKE_EX(DBNoServerIDError);
+#if (DBVER >= 33)
+    MAKE_EX(DBPageNotFoundError);
+    MAKE_EX(DBSecondaryBadError);
+#endif
+
+    MAKE_EX(DBInvalidArgError);
+    MAKE_EX(DBAccessError);
+    MAKE_EX(DBNoSpaceError);
+    MAKE_EX(DBNoMemoryError);
+    MAKE_EX(DBAgainError);
+    MAKE_EX(DBBusyError);
+    MAKE_EX(DBFileExistsError);
+    MAKE_EX(DBNoSuchFileError);
+    MAKE_EX(DBPermissionsError);
+
+#undef MAKE_EX
+
+    /* Check for errors */
+    if (PyErr_Occurred()) {
+        PyErr_Print();
+        Py_FatalError("can't initialize module _rpmdb");
+    }
+}
+
+
+