libvirt-python/libvirt-lxc-override.c at master · libvirt/libvirt-python · GitHub

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/*
 * libvir.c: this modules implements the main part of the glue of the
 *           libvir library and the Python interpreter. It provides the
 *           entry points where an automatically generated stub is
 *           unpractical
 *
 * Copyright (C) 2012-2019 Red Hat, Inc.
 *
 * Daniel Veillard <veillard@redhat.com>
 */

/* Horrible kludge to work around even more horrible name-space pollution
   via Python.h.  That file includes /usr/include/python3.x/pyconfig*.h,
   which has over 180 autoconf-style HAVE_* definitions.  Shame on them.  */
#undef HAVE_PTHREAD_H

#include <Python.h>
#include <libvirt/libvirt-lxc.h>
#include <libvirt/virterror.h>
#include "typewrappers.h"
#include "libvirt-utils.h"
#include "libvirt-lxc.h"

#if 0
# define DEBUG_ERROR 1
#endif

#if DEBUG_ERROR
# define DEBUG(fmt, ...)            \
    printf(fmt, __VA_ARGS__)
#else
# define DEBUG(fmt, ...)            \
    while (0) {printf(fmt, __VA_ARGS__);}
#endif

/************************************************************************
 *									*
 *		Statistics						*
 *									*
 ************************************************************************/

static PyObject *
libvirt_lxc_virDomainLxcOpenNamespace(PyObject *self ATTRIBUTE_UNUSED,
                                      PyObject *args)
{
    PyObject *py_retval;
    virDomainPtr domain;
    PyObject *pyobj_domain;
    unsigned int flags;
    int c_retval;
    int *fdlist = NULL;
    ssize_t i;

    if (!PyArg_ParseTuple(args, (char *)"OI:virDomainLxcOpenNamespace",
                          &pyobj_domain, &flags))
        return NULL;
    domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);

    if (domain == NULL)
        return VIR_PY_NONE;
    LIBVIRT_BEGIN_ALLOW_THREADS;
    c_retval = virDomainLxcOpenNamespace(domain, &fdlist, flags);
    LIBVIRT_END_ALLOW_THREADS;

    if (c_retval < 0)
        return VIR_PY_NONE;

    if ((py_retval = PyList_New(0)) == NULL)
        goto error;

    for (i = 0; i < c_retval; i++)
        VIR_PY_LIST_APPEND_GOTO(py_retval, libvirt_intWrap(fdlist[i]), error);

 cleanup:
    VIR_FREE(fdlist);
    return py_retval;

 error:
    for (i = 0; i < c_retval; i++) {
        VIR_FORCE_CLOSE(fdlist[i]);
    }
    Py_CLEAR(py_retval);
    goto cleanup;
}
/************************************************************************
 *									*
 *			The registration stuff				*
 *									*
 ************************************************************************/
static PyMethodDef libvirtLxcMethods[] = {
#include "libvirt-lxc-export.c.inc"
    {(char *) "virDomainLxcOpenNamespace", libvirt_lxc_virDomainLxcOpenNamespace, METH_VARARGS, NULL},
    {NULL, NULL, 0, NULL}
};

static struct PyModuleDef moduledef = {
    PyModuleDef_HEAD_INIT,
#ifndef __CYGWIN__
    "libvirtmod_lxc",
#else
    "cygvirtmod_lxc",
#endif
    NULL,
    -1,
    libvirtLxcMethods,
    NULL,
    NULL,
    NULL,
    NULL
};

PyMODINIT_FUNC
#ifndef __CYGWIN__
PyInit_libvirtmod_lxc
#else
PyInit_cygvirtmod_lxc
#endif
(void)
{
    PyObject *module;

    if (virInitialize() < 0)
        return NULL;

    // PyModule_Create can return NULL if module creation fails
    // https://docs.python.org/3/c-api/module.html#c.PyModule_Create
    module = PyModule_Create(&moduledef);
    if (module == NULL)
        return NULL;

#ifdef Py_GIL_DISABLED
    PyUnstable_Module_SetGIL(module, Py_MOD_GIL_NOT_USED);
#endif

    return module;
}