mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-15 14:20:55 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

Bugfix for issue3885 and 'DB.verify()' crash.

Browse source 
Reviewed by Nick Coghlan.
This commit is contained in:
Jesus Cea 2008-09-23 18:54:08 +00:00
parent 09979a137a
commit 5cd5f12a48
3 changed files with 123 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

113
Modules/_bsddb.c
View file

@ -989,7 +989,7 @@ newDBObject(DBEnvObject* arg, int flags)
/* Forward declaration */
static PyObject *DB_close_internal(DBObject* self, int flags);
static PyObject *DB_close_internal(DBObject* self, int flags, int do_not_close);
static void
DB_dealloc(DBObject* self)
@ -997,8 +997,15 @@ DB_dealloc(DBObject* self)
PyObject *dummy;
if (self->db != NULL) {
dummy=DB_close_internal(self,0);
Py_XDECREF(dummy);
dummy=DB_close_internal(self, 0, 0);
/*
** Raising exceptions while doing
** garbage collection is a fatal error.
*/
if (dummy)
Py_DECREF(dummy);
else
PyErr_Clear();
}
if (self->in_weakreflist != NULL) {
PyObject_ClearWeakRefs((PyObject *) self);
@ -1052,8 +1059,15 @@ DBCursor_dealloc(DBCursorObject* self)
PyObject *dummy;
if (self->dbc != NULL) {
dummy=DBC_close_internal(self);
Py_XDECREF(dummy);
dummy=DBC_close_internal(self);
/*
** Raising exceptions while doing
** garbage collection is a fatal error.
*/
if (dummy)
Py_DECREF(dummy);
else
PyErr_Clear();
}
if (self->in_weakreflist != NULL) {
PyObject_ClearWeakRefs((PyObject *) self);
@ -1071,6 +1085,7 @@ newDBEnvObject(int flags)
if (self == NULL)
return NULL;
self->db_env = NULL;
self->closed = 1;
self->flags = flags;
self->moduleFlags.getReturnsNone = DEFAULT_GET_RETURNS_NONE;
@ -1107,8 +1122,15 @@ DBEnv_dealloc(DBEnvObject* self)
PyObject *dummy;
if (self->db_env) {
dummy=DBEnv_close_internal(self,0);
Py_XDECREF(dummy);
dummy=DBEnv_close_internal(self, 0);
/*
** Raising exceptions while doing
** garbage collection is a fatal error.
*/
if (dummy)
Py_DECREF(dummy);
else
PyErr_Clear();
}
Py_XDECREF(self->event_notifyCallback);
@ -1186,8 +1208,17 @@ DBTxn_dealloc(DBTxnObject* self)
if (self->txn) {
int flag_prepare = self->flag_prepare;
dummy=DBTxn_abort_discard_internal(self,0);
Py_XDECREF(dummy);
/*
** Raising exceptions while doing
** garbage collection is a fatal error.
*/
if (dummy)
Py_DECREF(dummy);
else
PyErr_Clear();
if (!flag_prepare) {
PyErr_Warn(PyExc_RuntimeWarning,
"DBTxn aborted in destructor. No prior commit() or abort().");
@ -1280,7 +1311,14 @@ DBSequence_dealloc(DBSequenceObject* self)
if (self->sequence != NULL) {
dummy=DBSequence_close_internal(self,0,0);
Py_XDECREF(dummy);
/*
** Raising exceptions while doing
** garbage collection is a fatal error.
*/
if (dummy)
Py_DECREF(dummy);
else
PyErr_Clear();
}
if (self->in_weakreflist != NULL) {
@ -1485,10 +1523,10 @@ DB_associate(DBObject* self, PyObject* args, PyObject* kwargs)
static PyObject*
DB_close_internal(DBObject* self, int flags)
DB_close_internal(DBObject* self, int flags, int do_not_close)
{
PyObject *dummy;
int err;
int err = 0;
if (self->db != NULL) {
/* Can be NULL if db is not in an environment */
@ -1511,10 +1549,20 @@ DB_close_internal(DBObject* self, int flags)
}
#endif
MYDB_BEGIN_ALLOW_THREADS;
err = self->db->close(self->db, flags);
MYDB_END_ALLOW_THREADS;
self->db = NULL;
/*
** "do_not_close" is used to dispose all related objects in the
** tree, without actually releasing the "root" object.
** This is done, for example, because function calls like
** "DB.verify()" implicitly close the underlying handle. So
** the handle doesn't need to be closed, but related objects
** must be cleaned up.
*/
if (!do_not_close) {
MYDB_BEGIN_ALLOW_THREADS;
err = self->db->close(self->db, flags);
MYDB_END_ALLOW_THREADS;
self->db = NULL;
}
RETURN_IF_ERR();
}
RETURN_NONE();
@ -1526,7 +1574,7 @@ DB_close(DBObject* self, PyObject* args)
int flags=0;
if (!PyArg_ParseTuple(args,"|i:close", &flags))
return NULL;
return DB_close_internal(self,flags);
return DB_close_internal(self, flags, 0);
}
@ -2146,7 +2194,7 @@ DB_open(DBObject* self, PyObject* args, PyObject* kwargs)
if (makeDBError(err)) {
PyObject *dummy;
dummy=DB_close_internal(self,0);
dummy=DB_close_internal(self, 0, 0);
Py_XDECREF(dummy);
return NULL;
}
@ -2840,21 +2888,24 @@ DB_verify(DBObject* self, PyObject* args, PyObject* kwargs)
/* XXX(nnorwitz): it should probably be an exception if outFile
can't be opened. */
MYDB_BEGIN_ALLOW_THREADS;
err = self->db->verify(self->db, fileName, dbName, outFile, flags);
MYDB_END_ALLOW_THREADS;
if (outFile)
fclose(outFile);
{ /* DB.verify acts as a DB handle destructor (like close) */
PyObject *error;
error=DB_close_internal(self,0);
error=DB_close_internal(self, 0, 1);
if (error ) {
return error;
}
}
MYDB_BEGIN_ALLOW_THREADS;
err = self->db->verify(self->db, fileName, dbName, outFile, flags);
MYDB_END_ALLOW_THREADS;
self->db = NULL; /* Implicit close; related objects already released */
if (outFile)
fclose(outFile);
RETURN_IF_ERR();
RETURN_NONE();
}
@ -3978,7 +4029,7 @@ DBEnv_close_internal(DBEnvObject* self, int flags)
Py_XDECREF(dummy);
}
while(self->children_dbs) {
dummy=DB_close_internal(self->children_dbs,0);
dummy=DB_close_internal(self->children_dbs, 0, 0);
Py_XDECREF(dummy);
}
}
@ -4003,7 +4054,7 @@ DBEnv_close(DBEnvObject* self, PyObject* args)
if (!PyArg_ParseTuple(args, "|i:close", &flags))
return NULL;
return DBEnv_close_internal(self,flags);
return DBEnv_close_internal(self, flags);
}
@ -5949,7 +6000,7 @@ DBTxn_abort_discard_internal(DBTxnObject* self, int discard)
}
#endif
while (self->children_dbs) {
dummy=DB_close_internal(self->children_dbs,0);
dummy=DB_close_internal(self->children_dbs, 0, 0);
Py_XDECREF(dummy);
}
@ -6030,6 +6081,14 @@ DBSequence_close_internal(DBSequenceObject* self, int flags, int do_not_close)
self->txn=NULL;
}
/*
** "do_not_close" is used to dispose all related objects in the
** tree, without actually releasing the "root" object.
** This is done, for example, because function calls like
** "DBSequence.remove()" implicitly close the underlying handle. So
** the handle doesn't need to be closed, but related objects
** must be cleaned up.
*/
if (!do_not_close) {
MYDB_BEGIN_ALLOW_THREADS
err = self->sequence->close(self->sequence, flags);

2
Modules/bsddb.h
View file

@ -105,7 +105,7 @@
#error "eek! DBVER can't handle minor versions > 9"
#endif
#define PY_BSDDB_VERSION "4.7.3pre5"
#define PY_BSDDB_VERSION "4.7.3pre9"
/* Python object definitions */