diff options
Diffstat (limited to 'Modules/mmapmodule.c')
| -rw-r--r-- | Modules/mmapmodule.c | 90 |
1 files changed, 54 insertions, 36 deletions
diff --git a/Modules/mmapmodule.c b/Modules/mmapmodule.c index 33c143e..d650eae 100644 --- a/Modules/mmapmodule.c +++ b/Modules/mmapmodule.c @@ -78,8 +78,6 @@ my_getpagesize(void) # define MAP_ANONYMOUS MAP_ANON #endif -static PyObject *mmap_module_error; - typedef enum { ACCESS_DEFAULT, @@ -240,15 +238,37 @@ mmap_read_line_method(mmap_object *self, return result; } +/* Basically the "n" format code with the ability to turn None into -1. */ +static int +mmap_convert_ssize_t(PyObject *obj, void *result) { + Py_ssize_t limit; + if (obj == Py_None) { + limit = -1; + } + else if (PyNumber_Check(obj)) { + limit = PyNumber_AsSsize_t(obj, PyExc_OverflowError); + if (limit == -1 && PyErr_Occurred()) + return 0; + } + else { + PyErr_Format(PyExc_TypeError, + "integer argument expected, got '%.200s'", + Py_TYPE(obj)->tp_name); + return 0; + } + *((Py_ssize_t *)result) = limit; + return 1; +} + static PyObject * mmap_read_method(mmap_object *self, PyObject *args) { - Py_ssize_t num_bytes, n; + Py_ssize_t num_bytes = -1, n; PyObject *result; CHECK_VALID(NULL); - if (!PyArg_ParseTuple(args, "n:read", &num_bytes)) + if (!PyArg_ParseTuple(args, "|O&:read", mmap_convert_ssize_t, &num_bytes)) return(NULL); /* silently 'adjust' out-of-range requests */ @@ -437,7 +457,7 @@ mmap_size_method(mmap_object *self, { struct stat buf; if (-1 == fstat(self->fd, &buf)) { - PyErr_SetFromErrno(mmap_module_error); + PyErr_SetFromErrno(PyExc_OSError); return NULL; } #ifdef HAVE_LARGEFILE_SUPPORT @@ -527,7 +547,7 @@ mmap_resize_method(mmap_object *self, void *newmap; if (ftruncate(self->fd, self->offset + new_size) == -1) { - PyErr_SetFromErrno(mmap_module_error); + PyErr_SetFromErrno(PyExc_OSError); return NULL; } @@ -542,7 +562,7 @@ mmap_resize_method(mmap_object *self, #endif if (newmap == (void *)-1) { - PyErr_SetFromErrno(mmap_module_error); + PyErr_SetFromErrno(PyExc_OSError); return NULL; } self->data = newmap; @@ -583,7 +603,7 @@ mmap_flush_method(mmap_object *self, PyObject *args) /* XXX semantics of return value? */ /* XXX flags for msync? */ if (-1 == msync(self->data + offset, size, MS_SYNC)) { - PyErr_SetFromErrno(mmap_module_error); + PyErr_SetFromErrno(PyExc_OSError); return NULL; } return PyLong_FromLong(0); @@ -645,9 +665,9 @@ mmap_move_method(mmap_object *self, PyObject *args) return NULL; } else { /* bounds check the values */ - if (cnt < 0 || (cnt + dest) < cnt || (cnt + src) < cnt || - src < 0 || src > self->size || (src + cnt) > self->size || - dest < 0 || dest > self->size || (dest + cnt) > self->size) { + if ((cnt + dest) < cnt || (cnt + src) < cnt || + src > self->size || (src + cnt) > self->size || + dest > self->size || (dest + cnt) > self->size) { PyErr_SetString(PyExc_ValueError, "source, destination, or count out of range"); return NULL; @@ -680,7 +700,9 @@ mmap__enter__method(mmap_object *self, PyObject *args) static PyObject * mmap__exit__method(PyObject *self, PyObject *args) { - return PyObject_CallMethod(self, "close", NULL); + _Py_IDENTIFIER(close); + + return _PyObject_CallMethodId(self, &PyId_close, NULL); } static struct PyMethodDef mmap_object_methods[] = { @@ -937,13 +959,13 @@ mmap_ass_subscript(mmap_object *self, PyObject *item, PyObject *value) } static PySequenceMethods mmap_as_sequence = { - (lenfunc)mmap_length, /*sq_length*/ - (binaryfunc)mmap_concat, /*sq_concat*/ - (ssizeargfunc)mmap_repeat, /*sq_repeat*/ - (ssizeargfunc)mmap_item, /*sq_item*/ - 0, /*sq_slice*/ - (ssizeobjargproc)mmap_ass_item, /*sq_ass_item*/ - 0, /*sq_ass_slice*/ + (lenfunc)mmap_length, /*sq_length*/ + (binaryfunc)mmap_concat, /*sq_concat*/ + (ssizeargfunc)mmap_repeat, /*sq_repeat*/ + (ssizeargfunc)mmap_item, /*sq_item*/ + 0, /*sq_slice*/ + (ssizeobjargproc)mmap_ass_item, /*sq_ass_item*/ + 0, /*sq_ass_slice*/ }; static PyMappingMethods mmap_as_mapping = { @@ -1005,7 +1027,7 @@ static PyTypeObject mmap_object_type = { PyObject_GenericGetAttr, /*tp_getattro*/ 0, /*tp_setattro*/ &mmap_as_buffer, /*tp_as_buffer*/ - Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ + Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ mmap_doc, /*tp_doc*/ 0, /* tp_traverse */ 0, /* tp_clear */ @@ -1021,10 +1043,10 @@ static PyTypeObject mmap_object_type = { 0, /* tp_descr_get */ 0, /* tp_descr_set */ 0, /* tp_dictoffset */ - 0, /* tp_init */ + 0, /* tp_init */ PyType_GenericAlloc, /* tp_alloc */ new_mmap_object, /* tp_new */ - PyObject_Del, /* tp_free */ + PyObject_Del, /* tp_free */ }; @@ -1075,8 +1097,8 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict) int devzero = -1; int access = (int)ACCESS_DEFAULT; static char *keywords[] = {"fileno", "length", - "flags", "prot", - "access", "offset", NULL}; + "flags", "prot", + "access", "offset", NULL}; if (!PyArg_ParseTupleAndKeywords(args, kwdict, "iO|iii" _Py_PARSE_OFF_T, keywords, &fd, &map_size_obj, &flags, &prot, @@ -1186,7 +1208,7 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict) fd = devzero = open("/dev/zero", O_RDWR); if (devzero == -1) { Py_DECREF(m_obj); - PyErr_SetFromErrno(mmap_module_error); + PyErr_SetFromErrno(PyExc_OSError); return NULL; } #endif @@ -1194,7 +1216,7 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict) m_obj->fd = dup(fd); if (m_obj->fd == -1) { Py_DECREF(m_obj); - PyErr_SetFromErrno(mmap_module_error); + PyErr_SetFromErrno(PyExc_OSError); return NULL; } } @@ -1210,7 +1232,7 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict) if (m_obj->data == (char *)-1) { m_obj->data = NULL; Py_DECREF(m_obj); - PyErr_SetFromErrno(mmap_module_error); + PyErr_SetFromErrno(PyExc_OSError); return NULL; } m_obj->access = (access_mode)access; @@ -1243,8 +1265,8 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict) int access = (access_mode)ACCESS_DEFAULT; DWORD flProtect, dwDesiredAccess; static char *keywords[] = { "fileno", "length", - "tagname", - "access", "offset", NULL }; + "tagname", + "access", "offset", NULL }; if (!PyArg_ParseTupleAndKeywords(args, kwdict, "iO|ziL", keywords, &fileno, &map_size_obj, @@ -1291,12 +1313,12 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict) if (fileno != -1 && fileno != 0) { /* Ensure that fileno is within the CRT's valid range */ if (_PyVerify_fd(fileno) == 0) { - PyErr_SetFromErrno(mmap_module_error); + PyErr_SetFromErrno(PyExc_OSError); return NULL; } fh = (HANDLE)_get_osfhandle(fileno); if (fh==(HANDLE)-1) { - PyErr_SetFromErrno(mmap_module_error); + PyErr_SetFromErrno(PyExc_OSError); return NULL; } /* Win9x appears to need us seeked to zero */ @@ -1456,11 +1478,7 @@ PyInit_mmap(void) dict = PyModule_GetDict(module); if (!dict) return NULL; - mmap_module_error = PyErr_NewException("mmap.error", - PyExc_EnvironmentError , NULL); - if (mmap_module_error == NULL) - return NULL; - PyDict_SetItemString(dict, "error", mmap_module_error); + PyDict_SetItemString(dict, "error", PyExc_OSError); PyDict_SetItemString(dict, "mmap", (PyObject*) &mmap_object_type); #ifdef PROT_EXEC setint(dict, "PROT_EXEC", PROT_EXEC); |