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mirror of https://github.com/python/cpython.git synced 2024-12-01 11:15:56 +01:00
cpython/Modules/bsddbmodule.c
Fred Drake ed5e8234d7 Gustavo Niemeyer <niemeyer@conectiva.com>:
Fixed recno support (keys are integers rather than strings).
Work around DB bug that cause stdin to be closed by rnopen() when the
DB file needed to exist but did not (no longer segfaults).

This closes SF tracker patch #403445.

Also wrapped some long lines and added whitespace around operators -- FLD.
2001-02-27 18:56:46 +00:00

873 lines
19 KiB
C

/* 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
#ifdef HAVE_UNISTD_H
#include <unistd.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;
staticforward 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 int
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 = {
(inquiry)bsddb_length, /*mp_length*/
(binaryfunc)bsddb_subscript, /*mp_subscript*/
(objobjargproc)bsddb_ass_sub, /*mp_ass_subscript*/
};
static PyObject *
bsddb_close(bsddbobject *dp, PyObject *args)
{
if (!PyArg_NoArgs(args))
return NULL;
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 *args)
{
PyObject *list, *item=NULL;
DBT krec, drec;
char *data=NULL,buf[4096];
int status;
int err;
if (!PyArg_NoArgs(args))
return NULL;
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 (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_Parse(args, "i", &recno)) {
PyErr_SetString(PyExc_TypeError,
"key type must be integer");
return NULL;
}
krec.data = &recno;
krec.size = sizeof(recno);
}
else {
if (!PyArg_Parse(args, "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);
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_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->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, PyObject *args, int sequence_request)
{
int status;
DBT krec, drec;
char *kdata=NULL,kbuf[4096];
char *ddata=NULL,dbuf[4096];
PyObject *result;
if (!PyArg_NoArgs(args))
return NULL;
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_SetObject(PyExc_KeyError, args);
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, PyObject *key)
{
return bsddb_seq(dp, key, R_NEXT);
}
static PyObject *
bsddb_previous(bsddbobject *dp, PyObject *key)
{
return bsddb_seq(dp, key, R_PREV);
}
static PyObject *
bsddb_first(bsddbobject *dp, PyObject *key)
{
return bsddb_seq(dp, key, R_FIRST);
}
static PyObject *
bsddb_last(bsddbobject *dp, PyObject *key)
{
return bsddb_seq(dp, key, R_LAST);
}
static PyObject *
bsddb_sync(bsddbobject *dp, PyObject *args)
{
int status;
if (!PyArg_NoArgs(args))
return NULL;
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},
{"keys", (PyCFunction)bsddb_keys},
{"has_key", (PyCFunction)bsddb_has_key},
{"set_location", (PyCFunction)bsddb_set_location},
{"next", (PyCFunction)bsddb_next},
{"previous", (PyCFunction)bsddb_previous},
{"first", (PyCFunction)bsddb_first},
{"last", (PyCFunction)bsddb_last},
{"sync", (PyCFunction)bsddb_sync},
{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",
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, "s|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, "s|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, "s|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, 1},
{"btopen", (PyCFunction)bsdbtopen, 1},
{"rnopen", (PyCFunction)bsdrnopen, 1},
{0, 0},
};
DL_EXPORT(void)
initbsddb(void) {
PyObject *m, *d;
Bsddbtype.ob_type = &PyType_Type;
m = Py_InitModule("bsddb", bsddbmodule_methods);
d = PyModule_GetDict(m);
BsddbError = PyErr_NewException("bsddb.error", NULL, NULL);
if (BsddbError != NULL)
PyDict_SetItemString(d, "error", BsddbError);
}