mirror of
https://gitlab.com/libvirt/libvirt.git
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525 lines
10 KiB
C
525 lines
10 KiB
C
/*
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* types.c: converter functions between the internal representation
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* and the Python objects
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*
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* Copyright (C) 2005, 2007, 2012 Red Hat, Inc.
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*
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* Daniel Veillard <veillard@redhat.com>
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*/
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#include <config.h>
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/* Horrible kludge to work around even more horrible name-space pollution
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* via Python.h. That file includes /usr/include/python2.5/pyconfig*.h,
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* which has over 180 autoconf-style HAVE_* definitions. Shame on them. */
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#undef HAVE_PTHREAD_H
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#include "typewrappers.h"
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#include "viralloc.h"
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#ifndef Py_CAPSULE_H
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typedef void(*PyCapsule_Destructor)(void *, void *);
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#endif
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static PyObject *
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libvirt_buildPyObject(void *cobj,
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const char *name,
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PyCapsule_Destructor destr)
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{
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PyObject *ret;
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#ifdef Py_CAPSULE_H
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ret = PyCapsule_New(cobj, name, destr);
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#else
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ret = PyCObject_FromVoidPtrAndDesc(cobj, (void *) name, destr);
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#endif /* _TEST_CAPSULE */
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return ret;
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}
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PyObject *
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libvirt_intWrap(int val)
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{
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PyObject *ret;
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ret = PyInt_FromLong((long) val);
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return ret;
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}
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PyObject *
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libvirt_longWrap(long val)
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{
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PyObject *ret;
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ret = PyInt_FromLong(val);
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return ret;
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}
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PyObject *
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libvirt_ulongWrap(unsigned long val)
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{
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PyObject *ret;
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ret = PyLong_FromLong(val);
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return ret;
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}
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PyObject *
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libvirt_longlongWrap(long long val)
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{
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PyObject *ret;
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ret = PyLong_FromUnsignedLongLong((unsigned long long) val);
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return ret;
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}
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PyObject *
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libvirt_ulonglongWrap(unsigned long long val)
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{
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PyObject *ret;
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ret = PyLong_FromUnsignedLongLong(val);
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return ret;
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}
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PyObject *
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libvirt_charPtrSizeWrap(char *str, Py_ssize_t size)
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{
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PyObject *ret;
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if (str == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = PyString_FromStringAndSize(str, size);
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VIR_FREE(str);
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return ret;
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}
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PyObject *
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libvirt_charPtrWrap(char *str)
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{
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PyObject *ret;
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if (str == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = PyString_FromString(str);
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VIR_FREE(str);
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return ret;
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}
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PyObject *
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libvirt_constcharPtrWrap(const char *str)
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{
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PyObject *ret;
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if (str == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = PyString_FromString(str);
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return ret;
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}
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int
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libvirt_intUnwrap(PyObject *obj, int *val)
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{
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long long_val;
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if (!obj) {
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PyErr_SetString(PyExc_TypeError, "unexpected type");
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return -1;
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}
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/* If obj is type of PyInt_Type, PyInt_AsLong converts it
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* to C long type directly. If it is of PyLong_Type, PyInt_AsLong
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* will call PyLong_AsLong() to deal with it automatically.
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*/
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long_val = PyInt_AsLong(obj);
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if ((long_val == -1) && PyErr_Occurred())
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return -1;
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#if LONG_MAX != INT_MAX
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if (long_val >= INT_MIN && long_val <= INT_MAX) {
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*val = long_val;
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} else {
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PyErr_SetString(PyExc_OverflowError,
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"Python int too large to convert to C int");
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return -1;
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}
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#else
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*val = long_val;
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#endif
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return 0;
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}
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int
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libvirt_uintUnwrap(PyObject *obj, unsigned int *val)
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{
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long long_val;
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if (!obj) {
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PyErr_SetString(PyExc_TypeError, "unexpected type");
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return -1;
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}
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long_val = PyInt_AsLong(obj);
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if ((long_val == -1) && PyErr_Occurred())
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return -1;
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if (long_val >= 0 && long_val <= UINT_MAX) {
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*val = long_val;
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} else {
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PyErr_SetString(PyExc_OverflowError,
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"Python int too large to convert to C unsigned int");
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return -1;
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}
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return 0;
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}
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int
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libvirt_longUnwrap(PyObject *obj, long *val)
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{
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long long_val;
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if (!obj) {
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PyErr_SetString(PyExc_TypeError, "unexpected type");
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return -1;
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}
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long_val = PyInt_AsLong(obj);
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if ((long_val == -1) && PyErr_Occurred())
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return -1;
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*val = long_val;
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return 0;
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}
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int
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libvirt_ulongUnwrap(PyObject *obj, unsigned long *val)
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{
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long long_val;
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if (!obj) {
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PyErr_SetString(PyExc_TypeError, "unexpected type");
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return -1;
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}
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long_val = PyInt_AsLong(obj);
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if ((long_val == -1) && PyErr_Occurred())
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return -1;
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if (long_val >= 0) {
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*val = long_val;
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} else {
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PyErr_SetString(PyExc_OverflowError,
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"negative Python int cannot be converted to C unsigned long");
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return -1;
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}
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return 0;
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}
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int
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libvirt_longlongUnwrap(PyObject *obj, long long *val)
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{
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long long llong_val = -1;
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if (!obj) {
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PyErr_SetString(PyExc_TypeError, "unexpected type");
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return -1;
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}
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/* If obj is of PyInt_Type, PyLong_AsLongLong
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* will call PyInt_AsLong() to handle it automatically.
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*/
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if (PyInt_Check(obj) || PyLong_Check(obj))
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llong_val = PyLong_AsLongLong(obj);
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else
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PyErr_SetString(PyExc_TypeError, "an integer is required");
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if ((llong_val == -1) && PyErr_Occurred())
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return -1;
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*val = llong_val;
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return 0;
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}
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int
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libvirt_ulonglongUnwrap(PyObject *obj, unsigned long long *val)
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{
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unsigned long long ullong_val = -1;
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long long llong_val;
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if (!obj) {
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PyErr_SetString(PyExc_TypeError, "unexpected type");
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return -1;
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}
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/* The PyLong_AsUnsignedLongLong doesn't check the type of
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* obj, only accept argument of PyLong_Type, so we check it instead.
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*/
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if (PyInt_Check(obj)) {
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llong_val = PyInt_AsLong(obj);
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if (llong_val < 0)
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PyErr_SetString(PyExc_OverflowError,
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"negative Python int cannot be converted to C unsigned long long");
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else
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ullong_val = llong_val;
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} else if (PyLong_Check(obj)) {
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ullong_val = PyLong_AsUnsignedLongLong(obj);
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} else {
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PyErr_SetString(PyExc_TypeError, "an integer is required");
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}
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if ((ullong_val == -1) && PyErr_Occurred())
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return -1;
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*val = ullong_val;
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return 0;
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}
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int
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libvirt_doubleUnwrap(PyObject *obj, double *val)
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{
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double double_val;
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if (!obj) {
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PyErr_SetString(PyExc_TypeError, "unexpected type");
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return -1;
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}
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double_val = PyFloat_AsDouble(obj);
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if ((double_val == -1) && PyErr_Occurred())
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return -1;
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*val = double_val;
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return 0;
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}
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int
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libvirt_boolUnwrap(PyObject *obj, bool *val)
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{
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int ret;
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if (!obj) {
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PyErr_SetString(PyExc_TypeError, "unexpected type");
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return -1;
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}
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if ((ret = PyObject_IsTrue(obj)) < 0)
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return ret;
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*val = ret > 0;
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return 0;
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}
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PyObject *
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libvirt_virDomainPtrWrap(virDomainPtr node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virDomainPtr", NULL);
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return ret;
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}
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PyObject *
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libvirt_virNetworkPtrWrap(virNetworkPtr node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virNetworkPtr", NULL);
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return ret;
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}
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PyObject *
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libvirt_virInterfacePtrWrap(virInterfacePtr node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virInterfacePtr", NULL);
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return ret;
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}
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PyObject *
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libvirt_virStoragePoolPtrWrap(virStoragePoolPtr node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virStoragePoolPtr", NULL);
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return ret;
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}
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PyObject *
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libvirt_virStorageVolPtrWrap(virStorageVolPtr node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virStorageVolPtr", NULL);
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return ret;
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}
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PyObject *
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libvirt_virConnectPtrWrap(virConnectPtr node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virConnectPtr", NULL);
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return ret;
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}
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PyObject *
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libvirt_virNodeDevicePtrWrap(virNodeDevicePtr node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virNodeDevicePtr", NULL);
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return ret;
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}
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PyObject *
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libvirt_virSecretPtrWrap(virSecretPtr node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virSecretPtr", NULL);
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return ret;
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}
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PyObject *
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libvirt_virNWFilterPtrWrap(virNWFilterPtr node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virNWFilterPtr", NULL);
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return ret;
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}
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PyObject *
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libvirt_virStreamPtrWrap(virStreamPtr node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virStreamPtr", NULL);
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return ret;
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}
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PyObject *
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libvirt_virDomainSnapshotPtrWrap(virDomainSnapshotPtr node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virDomainSnapshotPtr", NULL);
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return ret;
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}
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PyObject *
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libvirt_virEventHandleCallbackWrap(virEventHandleCallback node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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printf("%s: WARNING - Wrapping None\n", __func__);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virEventHandleCallback", NULL);
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return ret;
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}
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PyObject *
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libvirt_virEventTimeoutCallbackWrap(virEventTimeoutCallback node)
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{
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PyObject *ret;
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if (node == NULL) {
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printf("%s: WARNING - Wrapping None\n", __func__);
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virEventTimeoutCallback", NULL);
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return ret;
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}
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PyObject *
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libvirt_virFreeCallbackWrap(virFreeCallback node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "virFreeCallback", NULL);
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return ret;
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}
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PyObject *
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libvirt_virVoidPtrWrap(void* node)
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{
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PyObject *ret;
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if (node == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}
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ret = libvirt_buildPyObject(node, "void*", NULL);
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return ret;
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}
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