lib/tdb/pytdb.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Python interface to tdb.
   5
   6    Copyright (C) 2004-2006 Tim Potter <tpot@samba.org>
   7    Copyright (C) 2007-2008 Jelmer Vernooij <jelmer@samba.org>
   8
   9      ** NOTE! The following LGPL license applies to the tdb
  10      ** library. This does NOT imply that all of Samba is released
  11      ** under the LGPL
  12
  13    This library is free software; you can redistribute it and/or
  14    modify it under the terms of the GNU Lesser General Public
  15    License as published by the Free Software Foundation; either
  16    version 3 of the License, or (at your option) any later version.
  17
  18    This library is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21    Lesser General Public License for more details.
  22
  23    You should have received a copy of the GNU Lesser General Public
  24    License along with this library; if not, see <http://www.gnu.org/licenses/>.
  25 */
  26
  27 #include "replace.h"
  28 #include "system/filesys.h"
  29
  30 #include <Python.h>
  31 #ifndef Py_RETURN_NONE
  32 #define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None
  33 #endif
  34
  35 /* Include tdb headers */
  36 #include <tdb.h>
  37
  38 typedef struct {
  39         PyObject_HEAD
  40         TDB_CONTEXT *ctx;
  41         bool closed;
  42 } PyTdbObject;
  43
  44 PyAPI_DATA(PyTypeObject) PyTdb;
  45
  46 static void PyErr_SetTDBError(TDB_CONTEXT *tdb)
  47 {
  48         PyErr_SetObject(PyExc_RuntimeError,
  49                 Py_BuildValue("(i,s)", tdb_error(tdb), tdb_errorstr(tdb)));
  50 }
  51
  52 static TDB_DATA PyString_AsTDB_DATA(PyObject *data)
  53 {
  54         TDB_DATA ret;
  55         ret.dptr = (unsigned char *)PyString_AsString(data);
  56         ret.dsize = PyString_Size(data);
  57         return ret;
  58 }
  59
  60 static PyObject *PyString_FromTDB_DATA(TDB_DATA data)
  61 {
  62         if (data.dptr == NULL && data.dsize == 0) {
  63                 Py_RETURN_NONE;
  64         } else {
  65                 PyObject *ret = PyString_FromStringAndSize((const char *)data.dptr,
  66                                                                                                    data.dsize);
  67                 free(data.dptr);
  68                 return ret;
  69     }
  70 }
  71
  72 #define PyErr_TDB_ERROR_IS_ERR_RAISE(ret, tdb) \
  73         if (ret != 0) { \
  74                 PyErr_SetTDBError(tdb); \
  75                 return NULL; \
  76         }
  77
  78 static PyObject *py_tdb_open(PyTypeObject *type, PyObject *args, PyObject *kwargs)
  79 {
  80         char *name = NULL;
  81         int hash_size = 0, tdb_flags = TDB_DEFAULT, flags = O_RDWR, mode = 0600;
  82         TDB_CONTEXT *ctx;
  83         PyTdbObject *ret;
  84         const char *kwnames[] = { "name", "hash_size", "tdb_flags", "flags", "mode", NULL };
  85
  86         if (!PyArg_ParseTupleAndKeywords(args, kwargs, "|siiii", (char **)kwnames, &name, &hash_size, &tdb_flags, &flags, &mode))
  87                 return NULL;
  88
  89         if (name == NULL) {
  90                 tdb_flags |= TDB_INTERNAL;
  91         }
  92
  93         ctx = tdb_open(name, hash_size, tdb_flags, flags, mode);
  94         if (ctx == NULL) {
  95                 PyErr_SetFromErrno(PyExc_IOError);
  96                 return NULL;
  97         }
  98
  99         ret = PyObject_New(PyTdbObject, &PyTdb);
 100         ret->ctx = ctx;
 101         ret->closed = false;
 102         return (PyObject *)ret;
 103 }
 104
 105 static PyObject *obj_transaction_cancel(PyTdbObject *self)
 106 {
 107         int ret = tdb_transaction_cancel(self->ctx);
 108         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 109         Py_RETURN_NONE;
 110 }
 111
 112 static PyObject *obj_transaction_commit(PyTdbObject *self)
 113 {
 114         int ret = tdb_transaction_commit(self->ctx);
 115         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 116         Py_RETURN_NONE;
 117 }
 118
 119 static PyObject *obj_transaction_prepare_commit(PyTdbObject *self)
 120 {
 121         int ret = tdb_transaction_prepare_commit(self->ctx);
 122         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 123         Py_RETURN_NONE;
 124 }
 125
 126 static PyObject *obj_transaction_start(PyTdbObject *self)
 127 {
 128         int ret = tdb_transaction_start(self->ctx);
 129         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 130         Py_RETURN_NONE;
 131 }
 132
 133 static PyObject *obj_reopen(PyTdbObject *self)
 134 {
 135         int ret = tdb_reopen(self->ctx);
 136         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 137         Py_RETURN_NONE;
 138 }
 139
 140 static PyObject *obj_lockall(PyTdbObject *self)
 141 {
 142         int ret = tdb_lockall(self->ctx);
 143         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 144         Py_RETURN_NONE;
 145 }
 146
 147 static PyObject *obj_unlockall(PyTdbObject *self)
 148 {
 149         int ret = tdb_unlockall(self->ctx);
 150         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 151         Py_RETURN_NONE;
 152 }
 153
 154 static PyObject *obj_lockall_read(PyTdbObject *self)
 155 {
 156         int ret = tdb_lockall_read(self->ctx);
 157         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 158         Py_RETURN_NONE;
 159 }
 160
 161 static PyObject *obj_unlockall_read(PyTdbObject *self)
 162 {
 163         int ret = tdb_unlockall_read(self->ctx);
 164         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 165         Py_RETURN_NONE;
 166 }
 167
 168 static PyObject *obj_close(PyTdbObject *self)
 169 {
 170         int ret;
 171         if (self->closed)
 172                 Py_RETURN_NONE;
 173         ret = tdb_close(self->ctx);
 174         self->closed = true;
 175         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 176         Py_RETURN_NONE;
 177 }
 178
 179 static PyObject *obj_get(PyTdbObject *self, PyObject *args)
 180 {
 181         TDB_DATA key;
 182         PyObject *py_key;
 183         if (!PyArg_ParseTuple(args, "O", &py_key))
 184                 return NULL;
 185
 186         key = PyString_AsTDB_DATA(py_key);
 187
 188         return PyString_FromTDB_DATA(tdb_fetch(self->ctx, key));
 189 }
 190
 191 static PyObject *obj_append(PyTdbObject *self, PyObject *args)
 192 {
 193         TDB_DATA key, data;
 194         PyObject *py_key, *py_data;
 195         int ret;
 196         if (!PyArg_ParseTuple(args, "OO", &py_key, &py_data))
 197                 return NULL;
 198
 199         key = PyString_AsTDB_DATA(py_key);
 200         data = PyString_AsTDB_DATA(py_data);
 201
 202         ret = tdb_append(self->ctx, key, data);
 203         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 204         Py_RETURN_NONE;
 205 }
 206
 207 static PyObject *obj_firstkey(PyTdbObject *self)
 208 {
 209         return PyString_FromTDB_DATA(tdb_firstkey(self->ctx));
 210 }
 211
 212 static PyObject *obj_nextkey(PyTdbObject *self, PyObject *args)
 213 {
 214         TDB_DATA key;
 215         PyObject *py_key;
 216         if (!PyArg_ParseTuple(args, "O", &py_key))
 217                 return NULL;
 218
 219         key = PyString_AsTDB_DATA(py_key);
 220
 221         return PyString_FromTDB_DATA(tdb_nextkey(self->ctx, key));
 222 }
 223
 224 static PyObject *obj_delete(PyTdbObject *self, PyObject *args)
 225 {
 226         TDB_DATA key;
 227         PyObject *py_key;
 228         int ret;
 229         if (!PyArg_ParseTuple(args, "O", &py_key))
 230                 return NULL;
 231
 232         key = PyString_AsTDB_DATA(py_key);
 233         ret = tdb_delete(self->ctx, key);
 234         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 235         Py_RETURN_NONE;
 236 }
 237
 238 static PyObject *obj_has_key(PyTdbObject *self, PyObject *args)
 239 {
 240         TDB_DATA key;
 241         int ret;
 242         PyObject *py_key;
 243         if (!PyArg_ParseTuple(args, "O", &py_key))
 244                 return NULL;
 245
 246         key = PyString_AsTDB_DATA(py_key);
 247         ret = tdb_exists(self->ctx, key);
 248         if (ret != TDB_ERR_NOEXIST) {
 249                 PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 250         }
 251
 252         return (ret == TDB_ERR_NOEXIST)?Py_False:Py_True;
 253 }
 254
 255 static PyObject *obj_store(PyTdbObject *self, PyObject *args)
 256 {
 257         TDB_DATA key, value;
 258         int ret;
 259         int flag = TDB_REPLACE;
 260         PyObject *py_key, *py_value;
 261
 262         if (!PyArg_ParseTuple(args, "OO|i", &py_key, &py_value, &flag))
 263                 return NULL;
 264
 265         key = PyString_AsTDB_DATA(py_key);
 266         value = PyString_AsTDB_DATA(py_value);
 267
 268         ret = tdb_store(self->ctx, key, value, flag);
 269         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 270         Py_RETURN_NONE;
 271 }
 272
 273 static PyObject *obj_add_flags(PyTdbObject *self, PyObject *args)
 274 {
 275         unsigned flags;
 276
 277         if (!PyArg_ParseTuple(args, "I", &flags))
 278                 return NULL;
 279
 280         tdb_add_flags(self->ctx, flags);
 281         Py_RETURN_NONE;
 282 }
 283
 284 static PyObject *obj_remove_flags(PyTdbObject *self, PyObject *args)
 285 {
 286         unsigned flags;
 287
 288         if (!PyArg_ParseTuple(args, "I", &flags))
 289                 return NULL;
 290
 291         tdb_remove_flags(self->ctx, flags);
 292         Py_RETURN_NONE;
 293 }
 294
 295 typedef struct {
 296         PyObject_HEAD
 297         TDB_DATA current;
 298         PyTdbObject *iteratee;
 299 } PyTdbIteratorObject;
 300
 301 static PyObject *tdb_iter_next(PyTdbIteratorObject *self)
 302 {
 303         TDB_DATA current;
 304         PyObject *ret;
 305         if (self->current.dptr == NULL && self->current.dsize == 0)
 306                 return NULL;
 307         current = self->current;
 308         self->current = tdb_nextkey(self->iteratee->ctx, self->current);
 309         ret = PyString_FromTDB_DATA(current);
 310         return ret;
 311 }
 312
 313 static void tdb_iter_dealloc(PyTdbIteratorObject *self)
 314 {
 315         Py_DECREF(self->iteratee);
 316         PyObject_Del(self);
 317 }
 318
 319 PyTypeObject PyTdbIterator = {
 320         .tp_name = "Iterator",
 321         .tp_basicsize = sizeof(PyTdbIteratorObject),
 322         .tp_iternext = (iternextfunc)tdb_iter_next,
 323         .tp_dealloc = (destructor)tdb_iter_dealloc,
 324         .tp_flags = Py_TPFLAGS_DEFAULT,
 325         .tp_iter = PyObject_SelfIter,
 326 };
 327
 328 static PyObject *tdb_object_iter(PyTdbObject *self)
 329 {
 330         PyTdbIteratorObject *ret;
 331
 332         ret = PyObject_New(PyTdbIteratorObject, &PyTdbIterator);
 333         ret->current = tdb_firstkey(self->ctx);
 334         ret->iteratee = self;
 335         Py_INCREF(self);
 336         return (PyObject *)ret;
 337 }
 338
 339 static PyObject *obj_clear(PyTdbObject *self)
 340 {
 341         int ret = tdb_wipe_all(self->ctx);
 342         PyErr_TDB_ERROR_IS_ERR_RAISE(ret, self->ctx);
 343         Py_RETURN_NONE;
 344 }
 345
 346 static PyObject *obj_enable_seqnum(PyTdbObject *self)
 347 {
 348         tdb_enable_seqnum(self->ctx);
 349         Py_RETURN_NONE;
 350 }
 351
 352 static PyObject *obj_increment_seqnum_nonblock(PyTdbObject *self)
 353 {
 354         tdb_increment_seqnum_nonblock(self->ctx);
 355         Py_RETURN_NONE;
 356 }
 357
 358 static PyMethodDef tdb_object_methods[] = {
 359         { "transaction_cancel", (PyCFunction)obj_transaction_cancel, METH_NOARGS,
 360                 "S.transaction_cancel() -> None\n"
 361                 "Cancel the currently active transaction." },
 362         { "transaction_commit", (PyCFunction)obj_transaction_commit, METH_NOARGS,
 363                 "S.transaction_commit() -> None\n"
 364                 "Commit the currently active transaction." },
 365         { "transaction_prepare_commit", (PyCFunction)obj_transaction_prepare_commit, METH_NOARGS,
 366                 "S.transaction_prepare_commit() -> None\n"
 367                 "Prepare to commit the currently active transaction" },
 368         { "transaction_start", (PyCFunction)obj_transaction_start, METH_NOARGS,
 369                 "S.transaction_start() -> None\n"
 370                 "Start a new transaction." },
 371         { "reopen", (PyCFunction)obj_reopen, METH_NOARGS, "Reopen this file." },
 372         { "lock_all", (PyCFunction)obj_lockall, METH_NOARGS, NULL },
 373         { "unlock_all", (PyCFunction)obj_unlockall, METH_NOARGS, NULL },
 374         { "read_lock_all", (PyCFunction)obj_lockall_read, METH_NOARGS, NULL },
 375         { "read_unlock_all", (PyCFunction)obj_unlockall_read, METH_NOARGS, NULL },
 376         { "close", (PyCFunction)obj_close, METH_NOARGS, NULL },
 377         { "get", (PyCFunction)obj_get, METH_VARARGS, "S.get(key) -> value\n"
 378                 "Fetch a value." },
 379         { "append", (PyCFunction)obj_append, METH_VARARGS, "S.append(key, value) -> None\n"
 380                 "Append data to an existing key." },
 381         { "firstkey", (PyCFunction)obj_firstkey, METH_NOARGS, "S.firstkey() -> data\n"
 382                 "Return the first key in this database." },
 383         { "nextkey", (PyCFunction)obj_nextkey, METH_NOARGS, "S.nextkey(key) -> data\n"
 384                 "Return the next key in this database." },
 385         { "delete", (PyCFunction)obj_delete, METH_VARARGS, "S.delete(key) -> None\n"
 386                 "Delete an entry." },
 387         { "has_key", (PyCFunction)obj_has_key, METH_VARARGS, "S.has_key(key) -> None\n"
 388                 "Check whether key exists in this database." },
 389         { "store", (PyCFunction)obj_store, METH_VARARGS, "S.store(key, data, flag=REPLACE) -> None"
 390                 "Store data." },
 391         { "add_flags", (PyCFunction)obj_add_flags, METH_VARARGS, "S.add_flags(flags) -> None" },
 392         { "remove_flags", (PyCFunction)obj_remove_flags, METH_VARARGS, "S.remove_flags(flags) -> None" },
 393         { "iterkeys", (PyCFunction)tdb_object_iter, METH_NOARGS, "S.iterkeys() -> iterator" },
 394         { "clear", (PyCFunction)obj_clear, METH_NOARGS, "S.clear() -> None\n"
 395                 "Wipe the entire database." },
 396         { "enable_seqnum", (PyCFunction)obj_enable_seqnum, METH_NOARGS,
 397                 "S.enable_seqnum() -> None" },
 398         { "increment_seqnum_nonblock", (PyCFunction)obj_increment_seqnum_nonblock, METH_NOARGS,
 399                 "S.increment_seqnum_nonblock() -> None" },
 400         { NULL }
 401 };
 402
 403 static PyObject *obj_get_hash_size(PyTdbObject *self, void *closure)
 404 {
 405         return PyInt_FromLong(tdb_hash_size(self->ctx));
 406 }
 407
 408 static int obj_set_max_dead(PyTdbObject *self, PyObject *max_dead, void *closure)
 409 {
 410         if (!PyInt_Check(max_dead))
 411                 return -1;
 412         tdb_set_max_dead(self->ctx, PyInt_AsLong(max_dead));
 413         return 0;
 414 }
 415
 416 static PyObject *obj_get_map_size(PyTdbObject *self, void *closure)
 417 {
 418         return PyInt_FromLong(tdb_map_size(self->ctx));
 419 }
 420
 421 static PyObject *obj_get_freelist_size(PyTdbObject *self, void *closure)
 422 {
 423         return PyInt_FromLong(tdb_freelist_size(self->ctx));
 424 }
 425
 426 static PyObject *obj_get_flags(PyTdbObject *self, void *closure)
 427 {
 428         return PyInt_FromLong(tdb_get_flags(self->ctx));
 429 }
 430
 431 static PyObject *obj_get_filename(PyTdbObject *self, void *closure)
 432 {
 433         return PyString_FromString(tdb_name(self->ctx));
 434 }
 435
 436 static PyObject *obj_get_seqnum(PyTdbObject *self, void *closure)
 437 {
 438         return PyInt_FromLong(tdb_get_seqnum(self->ctx));
 439 }
 440
 441
 442 static PyGetSetDef tdb_object_getsetters[] = {
 443         { (char *)"hash_size", (getter)obj_get_hash_size, NULL, NULL },
 444         { (char *)"map_size", (getter)obj_get_map_size, NULL, NULL },
 445         { (char *)"freelist_size", (getter)obj_get_freelist_size, NULL, NULL },
 446         { (char *)"flags", (getter)obj_get_flags, NULL, NULL },
 447         { (char *)"max_dead", NULL, (setter)obj_set_max_dead, NULL },
 448         { (char *)"filename", (getter)obj_get_filename, NULL, (char *)"The filename of this TDB file."},
 449         { (char *)"seqnum", (getter)obj_get_seqnum, NULL, NULL },
 450         { NULL }
 451 };
 452
 453 static PyObject *tdb_object_repr(PyTdbObject *self)
 454 {
 455         if (tdb_get_flags(self->ctx) & TDB_INTERNAL) {
 456                 return PyString_FromString("Tdb(<internal>)");
 457         } else {
 458                 return PyString_FromFormat("Tdb('%s')", tdb_name(self->ctx));
 459         }
 460 }
 461
 462 static void tdb_object_dealloc(PyTdbObject *self)
 463 {
 464         if (!self->closed)
 465                 tdb_close(self->ctx);
 466         PyObject_Del(self);
 467 }
 468
 469 static PyObject *obj_getitem(PyTdbObject *self, PyObject *key)
 470 {
 471         TDB_DATA tkey, val;
 472         if (!PyString_Check(key)) {
 473                 PyErr_SetString(PyExc_TypeError, "Expected string as key");
 474                 return NULL;
 475         }
 476
 477         tkey.dptr = (unsigned char *)PyString_AsString(key);
 478         tkey.dsize = PyString_Size(key);
 479
 480         val = tdb_fetch(self->ctx, tkey);
 481         if (val.dptr == NULL) {
 482                 PyErr_SetString(PyExc_KeyError, "No such TDB entry");
 483                 return NULL;
 484         } else {
 485                 return PyString_FromTDB_DATA(val);
 486         }
 487 }
 488
 489 static int obj_setitem(PyTdbObject *self, PyObject *key, PyObject *value)
 490 {
 491         TDB_DATA tkey, tval;
 492         int ret;
 493         if (!PyString_Check(key)) {
 494                 PyErr_SetString(PyExc_TypeError, "Expected string as key");
 495                 return -1;
 496         }
 497
 498         tkey = PyString_AsTDB_DATA(key);
 499
 500         if (value == NULL) {
 501                 ret = tdb_delete(self->ctx, tkey);
 502         } else {
 503                 if (!PyString_Check(value)) {
 504                         PyErr_SetString(PyExc_TypeError, "Expected string as value");
 505                         return -1;
 506                 }
 507
 508                 tval = PyString_AsTDB_DATA(value);
 509
 510                 ret = tdb_store(self->ctx, tkey, tval, TDB_REPLACE);
 511         }
 512
 513         if (ret != 0) {
 514                 PyErr_SetTDBError(self->ctx);
 515                 return -1;
 516         }
 517
 518         return ret;
 519 }
 520
 521 static PyMappingMethods tdb_object_mapping = {
 522         .mp_subscript = (binaryfunc)obj_getitem,
 523         .mp_ass_subscript = (objobjargproc)obj_setitem,
 524 };
 525 PyTypeObject PyTdb = {
 526         .tp_name = "Tdb",
 527         .tp_basicsize = sizeof(PyTdbObject),
 528         .tp_methods = tdb_object_methods,
 529         .tp_getset = tdb_object_getsetters,
 530         .tp_new = py_tdb_open,
 531         .tp_doc = "A TDB file",
 532         .tp_repr = (reprfunc)tdb_object_repr,
 533         .tp_dealloc = (destructor)tdb_object_dealloc,
 534         .tp_as_mapping = &tdb_object_mapping,
 535         .tp_flags = Py_TPFLAGS_DEFAULT|Py_TPFLAGS_BASETYPE|Py_TPFLAGS_HAVE_ITER,
 536         .tp_iter = (getiterfunc)tdb_object_iter,
 537 };
 538
 539 static PyMethodDef tdb_methods[] = {
 540         { "open", (PyCFunction)py_tdb_open, METH_VARARGS|METH_KEYWORDS, "open(name, hash_size=0, tdb_flags=TDB_DEFAULT, flags=O_RDWR, mode=0600)\n"
 541                 "Open a TDB file." },
 542         { NULL }
 543 };
 544
 545 void inittdb(void)
 546 {
 547         PyObject *m;
 548
 549         if (PyType_Ready(&PyTdb) < 0)
 550                 return;
 551
 552         if (PyType_Ready(&PyTdbIterator) < 0)
 553                 return;
 554
 555         m = Py_InitModule3("tdb", tdb_methods, "TDB is a simple key-value database similar to GDBM that supports multiple writers.");
 556         if (m == NULL)
 557                 return;
 558
 559         PyModule_AddObject(m, "REPLACE", PyInt_FromLong(TDB_REPLACE));
 560         PyModule_AddObject(m, "INSERT", PyInt_FromLong(TDB_INSERT));
 561         PyModule_AddObject(m, "MODIFY", PyInt_FromLong(TDB_MODIFY));
 562
 563         PyModule_AddObject(m, "DEFAULT", PyInt_FromLong(TDB_DEFAULT));
 564         PyModule_AddObject(m, "CLEAR_IF_FIRST", PyInt_FromLong(TDB_CLEAR_IF_FIRST));
 565         PyModule_AddObject(m, "INTERNAL", PyInt_FromLong(TDB_INTERNAL));
 566         PyModule_AddObject(m, "NOLOCK", PyInt_FromLong(TDB_NOLOCK));
 567         PyModule_AddObject(m, "NOMMAP", PyInt_FromLong(TDB_NOMMAP));
 568         PyModule_AddObject(m, "CONVERT", PyInt_FromLong(TDB_CONVERT));
 569         PyModule_AddObject(m, "BIGENDIAN", PyInt_FromLong(TDB_BIGENDIAN));
 570         PyModule_AddObject(m, "NOSYNC", PyInt_FromLong(TDB_NOSYNC));
 571         PyModule_AddObject(m, "SEQNUM", PyInt_FromLong(TDB_SEQNUM));
 572         PyModule_AddObject(m, "VOLATILE", PyInt_FromLong(TDB_VOLATILE));
 573         PyModule_AddObject(m, "ALLOW_NESTING", PyInt_FromLong(TDB_ALLOW_NESTING));
 574         PyModule_AddObject(m, "DISALLOW_NESTING", PyInt_FromLong(TDB_DISALLOW_NESTING));
 575         PyModule_AddObject(m, "INCOMPATIBLE_HASH", PyInt_FromLong(TDB_INCOMPATIBLE_HASH));
 576
 577         PyModule_AddObject(m, "__docformat__", PyString_FromString("restructuredText"));
 578
 579         Py_INCREF(&PyTdb);
 580         PyModule_AddObject(m, "Tdb", (PyObject *)&PyTdb);
 581
 582         Py_INCREF(&PyTdbIterator);
 583 }