symbian-qemu-0.9.1-12/python-2.6.1/Modules/bsddbmodule.c
changeset 1 2fb8b9db1c86
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/python-2.6.1/Modules/bsddbmodule.c	Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,862 @@
+/* Berkeley DB interface.
+   Author: Michael McLay
+   Hacked: Guido van Rossum
+   Btree and Recno additions plus sequence methods: David Ely
+   Hacked by Gustavo Niemeyer <niemeyer@conectiva.com> fixing recno
+   support.
+
+   XXX To do:
+   - provide a way to access the various hash functions
+   - support more open flags
+
+   The windows port of the Berkeley DB code is hard to find on the web:
+   www.nightmare.com/software.html
+*/
+
+#include "Python.h"
+#ifdef WITH_THREAD
+#include "pythread.h"
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#ifdef HAVE_DB_185_H
+#include <db_185.h>
+#else
+#include <db.h>
+#endif
+/* Please don't include internal header files of the Berkeley db package
+   (it messes up the info required in the Setup file) */
+
+typedef struct {
+	PyObject_HEAD
+	DB *di_bsddb;
+	int di_size;	/* -1 means recompute */
+	int di_type;
+#ifdef WITH_THREAD
+	PyThread_type_lock di_lock;
+#endif
+} bsddbobject;
+
+static PyTypeObject Bsddbtype;
+
+#define is_bsddbobject(v) ((v)->ob_type == &Bsddbtype)
+#define check_bsddbobject_open(v, r) if ((v)->di_bsddb == NULL) \
+               { PyErr_SetString(BsddbError, \
+				 "BSDDB object has already been closed"); \
+                 return r; }
+
+static PyObject *BsddbError;
+
+static PyObject *
+newdbhashobject(char *file, int flags, int mode,
+		int bsize, int ffactor, int nelem, int cachesize,
+		int hash, int lorder)
+{
+	bsddbobject *dp;
+	HASHINFO info;
+
+	if ((dp = PyObject_New(bsddbobject, &Bsddbtype)) == NULL)
+		return NULL;
+
+	info.bsize = bsize;
+	info.ffactor = ffactor;
+	info.nelem = nelem;
+	info.cachesize = cachesize;
+	info.hash = NULL; /* XXX should derive from hash argument */
+	info.lorder = lorder;
+
+#ifdef O_BINARY
+	flags |= O_BINARY;
+#endif
+	Py_BEGIN_ALLOW_THREADS
+	dp->di_bsddb = dbopen(file, flags, mode, DB_HASH, &info);
+	Py_END_ALLOW_THREADS
+	if (dp->di_bsddb == NULL) {
+		PyErr_SetFromErrno(BsddbError);
+#ifdef WITH_THREAD
+		dp->di_lock = NULL;
+#endif
+		Py_DECREF(dp);
+		return NULL;
+	}
+
+	dp->di_size = -1;
+	dp->di_type = DB_HASH;
+
+#ifdef WITH_THREAD
+	dp->di_lock = PyThread_allocate_lock();
+	if (dp->di_lock == NULL) {
+		PyErr_SetString(BsddbError, "can't allocate lock");
+		Py_DECREF(dp);
+		return NULL;
+	}
+#endif
+
+	return (PyObject *)dp;
+}
+
+static PyObject *
+newdbbtobject(char *file, int flags, int mode,
+	      int btflags, int cachesize, int maxkeypage,
+	      int minkeypage, int psize, int lorder)
+{
+	bsddbobject *dp;
+	BTREEINFO info;
+
+	if ((dp = PyObject_New(bsddbobject, &Bsddbtype)) == NULL)
+		return NULL;
+
+	info.flags = btflags;
+	info.cachesize = cachesize;
+	info.maxkeypage = maxkeypage;
+	info.minkeypage = minkeypage;
+	info.psize = psize;
+	info.lorder = lorder;
+	info.compare = 0; /* Use default comparison functions, for now..*/
+	info.prefix = 0;
+
+#ifdef O_BINARY
+	flags |= O_BINARY;
+#endif
+	Py_BEGIN_ALLOW_THREADS
+	dp->di_bsddb = dbopen(file, flags, mode, DB_BTREE, &info);
+	Py_END_ALLOW_THREADS
+	if (dp->di_bsddb == NULL) {
+		PyErr_SetFromErrno(BsddbError);
+#ifdef WITH_THREAD
+		dp->di_lock = NULL;
+#endif
+		Py_DECREF(dp);
+		return NULL;
+	}
+
+	dp->di_size = -1;
+	dp->di_type = DB_BTREE;
+
+#ifdef WITH_THREAD
+	dp->di_lock = PyThread_allocate_lock();
+	if (dp->di_lock == NULL) {
+		PyErr_SetString(BsddbError, "can't allocate lock");
+		Py_DECREF(dp);
+		return NULL;
+	}
+#endif
+
+	return (PyObject *)dp;
+}
+
+static PyObject *
+newdbrnobject(char *file, int flags, int mode,
+	      int rnflags, int cachesize, int psize, int lorder,
+	      size_t reclen, u_char bval, char *bfname)
+{
+	bsddbobject *dp;
+	RECNOINFO info;
+	int fd;
+
+	if ((dp = PyObject_New(bsddbobject, &Bsddbtype)) == NULL)
+		return NULL;
+
+	info.flags = rnflags;
+	info.cachesize = cachesize;
+	info.psize = psize;
+	info.lorder = lorder;
+	info.reclen = reclen;
+	info.bval = bval;
+	info.bfname = bfname;
+
+#ifdef O_BINARY
+	flags |= O_BINARY;
+#endif
+	/* This is a hack to avoid a dbopen() bug that happens when
+	 * it fails. */
+	fd = open(file, flags);
+	if (fd == -1) {
+		dp->di_bsddb = NULL;
+	}
+	else {
+		close(fd);
+		Py_BEGIN_ALLOW_THREADS
+		dp->di_bsddb = dbopen(file, flags, mode, DB_RECNO, &info);
+		Py_END_ALLOW_THREADS
+	}
+	if (dp->di_bsddb == NULL) {
+		PyErr_SetFromErrno(BsddbError);
+#ifdef WITH_THREAD
+		dp->di_lock = NULL;
+#endif
+		Py_DECREF(dp);
+		return NULL;
+	}
+
+	dp->di_size = -1;
+	dp->di_type = DB_RECNO;
+
+#ifdef WITH_THREAD
+	dp->di_lock = PyThread_allocate_lock();
+	if (dp->di_lock == NULL) {
+		PyErr_SetString(BsddbError, "can't allocate lock");
+		Py_DECREF(dp);
+		return NULL;
+	}
+#endif
+
+	return (PyObject *)dp;
+}
+
+static void
+bsddb_dealloc(bsddbobject *dp)
+{
+#ifdef WITH_THREAD
+	if (dp->di_lock) {
+		PyThread_acquire_lock(dp->di_lock, 0);
+		PyThread_release_lock(dp->di_lock);
+		PyThread_free_lock(dp->di_lock);
+		dp->di_lock = NULL;
+	}
+#endif
+	if (dp->di_bsddb != NULL) {
+		int status;
+		Py_BEGIN_ALLOW_THREADS
+		status = (dp->di_bsddb->close)(dp->di_bsddb);
+		Py_END_ALLOW_THREADS
+		if (status != 0)
+			fprintf(stderr,
+				"Python bsddb: close errno %d in dealloc\n",
+				errno);
+	}
+	PyObject_Del(dp);
+}
+
+#ifdef WITH_THREAD
+#define BSDDB_BGN_SAVE(_dp) \
+	Py_BEGIN_ALLOW_THREADS PyThread_acquire_lock(_dp->di_lock,1);
+#define BSDDB_END_SAVE(_dp) \
+	PyThread_release_lock(_dp->di_lock); Py_END_ALLOW_THREADS
+#else
+#define BSDDB_BGN_SAVE(_dp) Py_BEGIN_ALLOW_THREADS 
+#define BSDDB_END_SAVE(_dp) Py_END_ALLOW_THREADS
+#endif
+
+static Py_ssize_t
+bsddb_length(bsddbobject *dp)
+{
+	check_bsddbobject_open(dp, -1);
+	if (dp->di_size < 0) {
+		DBT krec, drec;
+		int status;
+		int size = 0;
+		BSDDB_BGN_SAVE(dp)
+		for (status = (dp->di_bsddb->seq)(dp->di_bsddb,
+						  &krec, &drec,R_FIRST);
+		     status == 0;
+		     status = (dp->di_bsddb->seq)(dp->di_bsddb,
+						  &krec, &drec, R_NEXT))
+			size++;
+		BSDDB_END_SAVE(dp)
+		if (status < 0) {
+			PyErr_SetFromErrno(BsddbError);
+			return -1;
+		}
+		dp->di_size = size;
+	}
+	return dp->di_size;
+}
+
+static PyObject *
+bsddb_subscript(bsddbobject *dp, PyObject *key)
+{
+	int status;
+	DBT krec, drec;
+	char *data,buf[4096];
+	int size;
+	PyObject *result;
+	recno_t recno;
+	
+	if (dp->di_type == DB_RECNO) {
+		if (!PyArg_Parse(key, "i", &recno)) {
+			PyErr_SetString(PyExc_TypeError,
+					"key type must be integer");
+			return NULL;
+		}
+		krec.data = &recno;
+		krec.size = sizeof(recno);
+	}
+	else {
+		if (!PyArg_Parse(key, "s#", &data, &size)) {
+			PyErr_SetString(PyExc_TypeError,
+					"key type must be string");
+			return NULL;
+		}
+		krec.data = data;
+		krec.size = size;
+	}
+        check_bsddbobject_open(dp, NULL);
+
+	BSDDB_BGN_SAVE(dp)
+	status = (dp->di_bsddb->get)(dp->di_bsddb, &krec, &drec, 0);
+	if (status == 0) {
+		if (drec.size > sizeof(buf)) data = malloc(drec.size);
+		else data = buf;
+		if (data!=NULL) memcpy(data,drec.data,drec.size);
+	}
+	BSDDB_END_SAVE(dp)
+	if (data==NULL) return PyErr_NoMemory();
+	if (status != 0) {
+		if (status < 0)
+			PyErr_SetFromErrno(BsddbError);
+		else
+			PyErr_SetObject(PyExc_KeyError, key);
+		return NULL;
+	}
+
+	result = PyString_FromStringAndSize(data, (int)drec.size);
+	if (data != buf) free(data);
+	return result;
+}
+
+static int
+bsddb_ass_sub(bsddbobject *dp, PyObject *key, PyObject *value)
+{
+	int status;
+	DBT krec, drec;
+	char *data;
+	int size;
+	recno_t recno;
+
+	if (dp->di_type == DB_RECNO) {
+		if (!PyArg_Parse(key, "i", &recno)) {
+			PyErr_SetString(PyExc_TypeError,
+					"bsddb key type must be integer");
+			return -1;
+		}
+		krec.data = &recno;
+		krec.size = sizeof(recno);
+	}
+	else {
+		if (!PyArg_Parse(key, "s#", &data, &size)) {
+			PyErr_SetString(PyExc_TypeError,
+					"bsddb key type must be string");
+			return -1;
+		}
+		krec.data = data;
+		krec.size = size;
+	}
+	check_bsddbobject_open(dp, -1);
+	dp->di_size = -1;
+	if (value == NULL) {
+		BSDDB_BGN_SAVE(dp)
+		status = (dp->di_bsddb->del)(dp->di_bsddb, &krec, 0);
+		BSDDB_END_SAVE(dp)
+	}
+	else {
+		if (!PyArg_Parse(value, "s#", &data, &size)) {
+			PyErr_SetString(PyExc_TypeError,
+					"bsddb value type must be string");
+			return -1;
+		}
+		drec.data = data;
+		drec.size = size;
+		BSDDB_BGN_SAVE(dp)
+		status = (dp->di_bsddb->put)(dp->di_bsddb, &krec, &drec, 0);
+		BSDDB_END_SAVE(dp)
+	}
+	if (status != 0) {
+		if (status < 0)
+			PyErr_SetFromErrno(BsddbError);
+		else
+			PyErr_SetObject(PyExc_KeyError, key);
+		return -1;
+	}
+	return 0;
+}
+
+static PyMappingMethods bsddb_as_mapping = {
+	(lenfunc)bsddb_length,		/*mp_length*/
+	(binaryfunc)bsddb_subscript,	/*mp_subscript*/
+	(objobjargproc)bsddb_ass_sub,	/*mp_ass_subscript*/
+};
+
+static PyObject *
+bsddb_close(bsddbobject *dp)
+{
+	if (dp->di_bsddb != NULL) {
+		int status;
+		BSDDB_BGN_SAVE(dp)
+		status = (dp->di_bsddb->close)(dp->di_bsddb);
+		BSDDB_END_SAVE(dp)
+		if (status != 0) {
+			dp->di_bsddb = NULL;
+			PyErr_SetFromErrno(BsddbError);
+			return NULL;
+		}
+	}
+	dp->di_bsddb = NULL;
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+static PyObject *
+bsddb_keys(bsddbobject *dp)
+{
+	PyObject *list, *item=NULL;
+	DBT krec, drec;
+	char *data=NULL,buf[4096];
+	int status;
+	int err;
+
+	check_bsddbobject_open(dp, NULL);
+	list = PyList_New(0);
+	if (list == NULL)
+		return NULL;
+	BSDDB_BGN_SAVE(dp)
+	status = (dp->di_bsddb->seq)(dp->di_bsddb, &krec, &drec, R_FIRST);
+	if (status == 0) {
+		if (krec.size > sizeof(buf)) data = malloc(krec.size);
+		else data = buf;
+		if (data != NULL) memcpy(data,krec.data,krec.size);
+	}
+	BSDDB_END_SAVE(dp)
+	if (status == 0 && data==NULL) return PyErr_NoMemory();
+	while (status == 0) {
+		if (dp->di_type == DB_RECNO)
+			item = PyInt_FromLong(*((int*)data));
+		else
+			item = PyString_FromStringAndSize(data,
+							  (int)krec.size);
+		if (data != buf) free(data);
+		if (item == NULL) {
+			Py_DECREF(list);
+			return NULL;
+		}
+		err = PyList_Append(list, item);
+		Py_DECREF(item);
+		if (err != 0) {
+			Py_DECREF(list);
+			return NULL;
+		}
+		BSDDB_BGN_SAVE(dp)
+		status = (dp->di_bsddb->seq)
+			(dp->di_bsddb, &krec, &drec, R_NEXT);
+		if (status == 0) {
+			if (krec.size > sizeof(buf))
+				data = malloc(krec.size);
+			else data = buf;
+			if (data != NULL)
+				memcpy(data,krec.data,krec.size);
+		}
+		BSDDB_END_SAVE(dp)
+		if (data == NULL) return PyErr_NoMemory();
+	}
+	if (status < 0) {
+		PyErr_SetFromErrno(BsddbError);
+		Py_DECREF(list);
+		return NULL;
+	}
+	if (dp->di_size < 0)
+		dp->di_size = PyList_Size(list); /* We just did the work */
+	return list;
+}
+
+static PyObject *
+bsddb_has_key(bsddbobject *dp, PyObject *args)
+{
+	DBT krec, drec;
+	int status;
+	char *data;
+	int size;
+	recno_t recno;
+
+	if (dp->di_type == DB_RECNO) {
+		if (!PyArg_ParseTuple(args, "i;key type must be integer",
+				      &recno)) {
+			return NULL;
+		}
+		krec.data = &recno;
+		krec.size = sizeof(recno);
+	}
+	else {
+		if (!PyArg_ParseTuple(args, "s#;key type must be string",
+				      &data, &size)) {
+			return NULL;
+		}
+		krec.data = data;
+		krec.size = size;
+	}
+	check_bsddbobject_open(dp, NULL);
+
+	BSDDB_BGN_SAVE(dp)
+	status = (dp->di_bsddb->get)(dp->di_bsddb, &krec, &drec, 0);
+	BSDDB_END_SAVE(dp)
+	if (status < 0) {
+		PyErr_SetFromErrno(BsddbError);
+		return NULL;
+	}
+
+	return PyInt_FromLong(status == 0);
+}
+
+static PyObject *
+bsddb_set_location(bsddbobject *dp, PyObject *key)
+{
+	int status;
+	DBT krec, drec;
+	char *data,buf[4096];
+	int size;
+	PyObject *result;
+	recno_t recno;
+
+	if (dp->di_type == DB_RECNO) {
+		if (!PyArg_ParseTuple(key, "i;key type must be integer",
+				      &recno)) {
+			return NULL;
+		}
+		krec.data = &recno;
+		krec.size = sizeof(recno);
+	}
+	else {
+		if (!PyArg_ParseTuple(key, "s#;key type must be string",
+				      &data, &size)) {
+			return NULL;
+		}
+		krec.data = data;
+		krec.size = size;
+	}
+	check_bsddbobject_open(dp, NULL);
+
+	BSDDB_BGN_SAVE(dp)
+	status = (dp->di_bsddb->seq)(dp->di_bsddb, &krec, &drec, R_CURSOR);
+	if (status == 0) {
+		if (drec.size > sizeof(buf)) data = malloc(drec.size);
+		else data = buf;
+		if (data!=NULL) memcpy(data,drec.data,drec.size);
+	}
+	BSDDB_END_SAVE(dp)
+	if (data==NULL) return PyErr_NoMemory();
+	if (status != 0) {
+		if (status < 0)
+			PyErr_SetFromErrno(BsddbError);
+		else
+			PyErr_SetObject(PyExc_KeyError, key);
+		return NULL;
+	}
+
+	if (dp->di_type == DB_RECNO)
+		result = Py_BuildValue("is#", *((int*)krec.data),
+				       data, drec.size);
+	else
+		result = Py_BuildValue("s#s#", krec.data, krec.size,
+				       data, drec.size);
+	if (data != buf) free(data);
+	return result;
+}
+
+static PyObject *
+bsddb_seq(bsddbobject *dp, int sequence_request)
+{
+	int status;
+	DBT krec, drec;
+	char *kdata=NULL,kbuf[4096];
+	char *ddata=NULL,dbuf[4096];
+	PyObject *result;
+
+	check_bsddbobject_open(dp, NULL);
+	krec.data = 0;
+	krec.size = 0;
+
+	BSDDB_BGN_SAVE(dp)
+	status = (dp->di_bsddb->seq)(dp->di_bsddb, &krec,
+				     &drec, sequence_request);
+	if (status == 0) {
+		if (krec.size > sizeof(kbuf)) kdata = malloc(krec.size);
+		else kdata = kbuf;
+		if (kdata != NULL) memcpy(kdata,krec.data,krec.size);
+		if (drec.size > sizeof(dbuf)) ddata = malloc(drec.size);
+		else ddata = dbuf;
+		if (ddata != NULL) memcpy(ddata,drec.data,drec.size);
+	}
+	BSDDB_END_SAVE(dp)
+	if (status == 0) {
+		if ((kdata == NULL) || (ddata == NULL)) 
+			return PyErr_NoMemory();
+	}
+	else { 
+		/* (status != 0) */  
+		if (status < 0)
+			PyErr_SetFromErrno(BsddbError);
+		else
+			PyErr_SetString(PyExc_KeyError, "no key/data pairs");
+		return NULL;
+	}
+
+	if (dp->di_type == DB_RECNO)
+		result = Py_BuildValue("is#", *((int*)kdata),
+				       ddata, drec.size);
+	else
+		result = Py_BuildValue("s#s#", kdata, krec.size,
+				       ddata, drec.size);
+	if (kdata != kbuf) free(kdata);
+	if (ddata != dbuf) free(ddata);
+	return result;
+}
+
+static PyObject *
+bsddb_next(bsddbobject *dp)
+{
+	return bsddb_seq(dp, R_NEXT);
+}
+static PyObject *
+bsddb_previous(bsddbobject *dp)
+{
+	return bsddb_seq(dp, R_PREV);
+}
+static PyObject *
+bsddb_first(bsddbobject *dp)
+{
+	return bsddb_seq(dp, R_FIRST);
+}
+static PyObject *
+bsddb_last(bsddbobject *dp)
+{
+	return bsddb_seq(dp, R_LAST);
+}
+static PyObject *
+bsddb_sync(bsddbobject *dp)
+{
+	int status;
+
+	check_bsddbobject_open(dp, NULL);
+	BSDDB_BGN_SAVE(dp)
+	status = (dp->di_bsddb->sync)(dp->di_bsddb, 0);
+	BSDDB_END_SAVE(dp)
+	if (status != 0) {
+		PyErr_SetFromErrno(BsddbError);
+		return NULL;
+	}
+	return PyInt_FromLong(status = 0);
+}
+static PyMethodDef bsddb_methods[] = {
+	{"close",		(PyCFunction)bsddb_close, METH_NOARGS},
+	{"keys",		(PyCFunction)bsddb_keys, METH_NOARGS},
+	{"has_key",		(PyCFunction)bsddb_has_key, METH_VARARGS},
+	{"set_location",	(PyCFunction)bsddb_set_location, METH_VARARGS},
+	{"next",		(PyCFunction)bsddb_next, METH_NOARGS},
+	{"previous",	(PyCFunction)bsddb_previous, METH_NOARGS},
+	{"first",		(PyCFunction)bsddb_first, METH_NOARGS},
+	{"last",		(PyCFunction)bsddb_last, METH_NOARGS},
+	{"sync",		(PyCFunction)bsddb_sync, METH_NOARGS},
+	{NULL,	       	NULL}		/* sentinel */
+};
+
+static PyObject *
+bsddb_getattr(PyObject *dp, char *name)
+{
+	return Py_FindMethod(bsddb_methods, dp, name);
+}
+
+static PyTypeObject Bsddbtype = {
+	PyObject_HEAD_INIT(NULL)
+	0,
+	"bsddb.bsddb",
+	sizeof(bsddbobject),
+	0,
+	(destructor)bsddb_dealloc, /*tp_dealloc*/
+	0,			/*tp_print*/
+	(getattrfunc)bsddb_getattr, /*tp_getattr*/
+	0,			/*tp_setattr*/
+	0,			/*tp_compare*/
+	0,			/*tp_repr*/
+	0,			/*tp_as_number*/
+	0,			/*tp_as_sequence*/
+	&bsddb_as_mapping,	/*tp_as_mapping*/
+};
+
+static PyObject *
+bsdhashopen(PyObject *self, PyObject *args)
+{
+	char *file;
+	char *flag = NULL;
+	int flags = O_RDONLY;
+	int mode = 0666;
+	int bsize = 0;
+	int ffactor = 0;
+	int nelem = 0;
+	int cachesize = 0;
+	int hash = 0; /* XXX currently ignored */
+	int lorder = 0;
+
+	if (!PyArg_ParseTuple(args, "z|siiiiiii:hashopen",
+			      &file, &flag, &mode,
+			      &bsize, &ffactor, &nelem, &cachesize,
+			      &hash, &lorder))
+		return NULL;
+	if (flag != NULL) {
+		/* XXX need to pass O_EXCL, O_EXLOCK, O_NONBLOCK, O_SHLOCK */
+		if (flag[0] == 'r')
+			flags = O_RDONLY;
+		else if (flag[0] == 'w')
+			flags = O_RDWR;
+		else if (flag[0] == 'c')
+			flags = O_RDWR|O_CREAT;
+		else if (flag[0] == 'n')
+			flags = O_RDWR|O_CREAT|O_TRUNC;
+		else {
+			PyErr_SetString(BsddbError,
+				"Flag should begin with 'r', 'w', 'c' or 'n'");
+			return NULL;
+		}
+		if (flag[1] == 'l') {
+#if defined(O_EXLOCK) && defined(O_SHLOCK)
+			if (flag[0] == 'r')
+				flags |= O_SHLOCK;
+			else
+				flags |= O_EXLOCK;
+#else
+			PyErr_SetString(BsddbError,
+				     "locking not supported on this platform");
+			return NULL;
+#endif
+		}
+	}
+	return newdbhashobject(file, flags, mode,
+			       bsize, ffactor, nelem, cachesize, hash, lorder);
+}
+
+static PyObject *
+bsdbtopen(PyObject *self, PyObject *args)
+{
+	char *file;
+	char *flag = NULL;
+	int flags = O_RDONLY;
+	int mode = 0666;
+	int cachesize = 0;
+	int maxkeypage = 0;
+	int minkeypage = 0;
+	int btflags = 0;
+	unsigned int psize = 0;
+	int lorder = 0;
+
+	if (!PyArg_ParseTuple(args, "z|siiiiiii:btopen",
+			      &file, &flag, &mode,
+			      &btflags, &cachesize, &maxkeypage, &minkeypage,
+			      &psize, &lorder))
+		return NULL;
+	if (flag != NULL) {
+		/* XXX need to pass O_EXCL, O_EXLOCK, O_NONBLOCK, O_SHLOCK */
+		if (flag[0] == 'r')
+			flags = O_RDONLY;
+		else if (flag[0] == 'w')
+			flags = O_RDWR;
+		else if (flag[0] == 'c')
+			flags = O_RDWR|O_CREAT;
+		else if (flag[0] == 'n')
+			flags = O_RDWR|O_CREAT|O_TRUNC;
+		else {
+			PyErr_SetString(BsddbError,
+			       "Flag should begin with 'r', 'w', 'c' or 'n'");
+			return NULL;
+		}
+		if (flag[1] == 'l') {
+#if defined(O_EXLOCK) && defined(O_SHLOCK)
+			if (flag[0] == 'r')
+				flags |= O_SHLOCK;
+			else
+				flags |= O_EXLOCK;
+#else
+			PyErr_SetString(BsddbError,
+				    "locking not supported on this platform");
+			return NULL;
+#endif
+		}
+	}
+	return newdbbtobject(file, flags, mode,
+			     btflags, cachesize, maxkeypage, minkeypage,
+			     psize, lorder);
+}
+
+static PyObject *
+bsdrnopen(PyObject *self, PyObject *args)
+{
+	char *file;
+	char *flag = NULL;
+	int flags = O_RDONLY;
+	int mode = 0666;
+	int cachesize = 0;
+	int rnflags = 0;
+	unsigned int psize = 0;
+	int lorder = 0;
+	size_t reclen = 0;
+	char  *bval = "";
+	char *bfname = NULL;
+
+	if (!PyArg_ParseTuple(args, "z|siiiiiiss:rnopen",
+			      &file, &flag, &mode,
+			      &rnflags, &cachesize, &psize, &lorder,
+			      &reclen, &bval, &bfname))
+		return NULL;
+
+	if (flag != NULL) {
+		/* XXX need to pass O_EXCL, O_EXLOCK, O_NONBLOCK, O_SHLOCK */
+		if (flag[0] == 'r')
+			flags = O_RDONLY;
+		else if (flag[0] == 'w')
+			flags = O_RDWR;
+		else if (flag[0] == 'c')
+			flags = O_RDWR|O_CREAT;
+		else if (flag[0] == 'n')
+			flags = O_RDWR|O_CREAT|O_TRUNC;
+		else {
+			PyErr_SetString(BsddbError,
+			       "Flag should begin with 'r', 'w', 'c' or 'n'");
+			return NULL;
+		}
+		if (flag[1] == 'l') {
+#if defined(O_EXLOCK) && defined(O_SHLOCK)
+			if (flag[0] == 'r')
+				flags |= O_SHLOCK;
+			else
+				flags |= O_EXLOCK;
+#else
+			PyErr_SetString(BsddbError,
+				    "locking not supported on this platform");
+			return NULL;
+#endif
+		}
+		else if (flag[1] != '\0') {
+			PyErr_SetString(BsddbError,
+				       "Flag char 2 should be 'l' or absent");
+			return NULL;
+		}
+	}
+	return newdbrnobject(file, flags, mode, rnflags, cachesize,
+			     psize, lorder, reclen, bval[0], bfname);
+}
+
+static PyMethodDef bsddbmodule_methods[] = {
+	{"hashopen",	(PyCFunction)bsdhashopen, METH_VARARGS},
+	{"btopen",	(PyCFunction)bsdbtopen, METH_VARARGS},
+	{"rnopen",	(PyCFunction)bsdrnopen, METH_VARARGS},
+	/* strictly for use by dbhhash!!! */
+	{"open",	(PyCFunction)bsdhashopen, METH_VARARGS},
+	{0,		0},
+};
+
+PyMODINIT_FUNC
+initbsddb185(void) {
+	PyObject *m, *d;
+
+    if (PyErr_WarnPy3k("the bsddb185 module has been removed in "
+                       "Python 3.0", 2) < 0)
+        return;    
+
+	Bsddbtype.ob_type = &PyType_Type;
+	m = Py_InitModule("bsddb185", bsddbmodule_methods);
+	if (m == NULL)
+		return;
+	d = PyModule_GetDict(m);
+	BsddbError = PyErr_NewException("bsddb.error", NULL, NULL);
+	if (BsddbError != NULL)
+		PyDict_SetItemString(d, "error", BsddbError);
+}