libvirt-lxc-override.c

   1 /*
   2  * libvir.c: this modules implements the main part of the glue of the
   3  *           libvir library and the Python interpreter. It provides the
   4  *           entry points where an automatically generated stub is
   5  *           unpractical
   6  *
   7  * Copyright (C) 2012-2013 Red Hat, Inc.
   8  *
   9  * Daniel Veillard <veillard@redhat.com>
  10  */
  11
  12 #include <config.h>
  13
  14 /* Horrible kludge to work around even more horrible name-space pollution
  15    via Python.h.  That file includes /usr/include/python2.5/pyconfig*.h,
  16    which has over 180 autoconf-style HAVE_* definitions.  Shame on them.  */
  17 #undef HAVE_PTHREAD_H
  18
  19 #include <Python.h>
  20 #include <libvirt/libvirt-lxc.h>
  21 #include <libvirt/virterror.h>
  22 #include "typewrappers.h"
  23 #include "libvirt-lxc.h"
  24 #include "viralloc.h"
  25 #include "virfile.h"
  26
  27 #ifndef __CYGWIN__
  28 extern void initlibvirtmod_lxc(void);
  29 #else
  30 extern void initcygvirtmod_lxc(void);
  31 #endif
  32
  33 #if 0
  34 # define DEBUG_ERROR 1
  35 #endif
  36
  37 #if DEBUG_ERROR
  38 # define DEBUG(fmt, ...)            \
  39    printf(fmt, __VA_ARGS__)
  40 #else
  41 # define DEBUG(fmt, ...)            \
  42    do {} while (0)
  43 #endif
  44
  45 /* The two-statement sequence "Py_INCREF(Py_None); return Py_None;"
  46    is so common that we encapsulate it here.  Now, each use is simply
  47    return VIR_PY_NONE;  */
  48 #define VIR_PY_NONE (Py_INCREF (Py_None), Py_None)
  49 #define VIR_PY_INT_FAIL (libvirt_intWrap(-1))
  50 #define VIR_PY_INT_SUCCESS (libvirt_intWrap(0))
  51
  52 /************************************************************************
  53  *                                                                      *
  54  *              Statistics                                              *
  55  *                                                                      *
  56  ************************************************************************/
  57
  58 static PyObject *
  59 libvirt_lxc_virDomainLxcOpenNamespace(PyObject *self ATTRIBUTE_UNUSED,
  60                                       PyObject *args) {
  61     PyObject *py_retval;
  62     virDomainPtr domain;
  63     PyObject *pyobj_domain;
  64     unsigned int flags;
  65     int c_retval;
  66     int *fdlist = NULL;
  67     int i;
  68
  69     if (!PyArg_ParseTuple(args, (char *)"Oi:virDomainLxcOpenNamespace",
  70                           &pyobj_domain, &flags))
  71         return NULL;
  72     domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
  73
  74     if (domain == NULL)
  75         return VIR_PY_NONE;
  76     LIBVIRT_BEGIN_ALLOW_THREADS;
  77     c_retval = virDomainLxcOpenNamespace(domain, &fdlist, flags);
  78     LIBVIRT_END_ALLOW_THREADS;
  79
  80     if (c_retval < 0)
  81         return VIR_PY_NONE;
  82
  83     py_retval = PyList_New(c_retval);
  84     for (i = 0 ; i < c_retval ; i++) {
  85         PyObject *item = NULL;
  86
  87         if ((item = PyInt_FromLong(fdlist[i])) == NULL)
  88             goto error;
  89
  90         if (PyList_Append(py_retval, item) < 0) {
  91             Py_DECREF(item);
  92             goto error;
  93         }
  94     }
  95     return py_retval;
  96
  97 error:
  98     for (i = 0 ; i < c_retval ; i++) {
  99         VIR_FORCE_CLOSE(fdlist[i]);
 100     }
 101     VIR_FREE(fdlist);
 102     return VIR_PY_NONE;
 103 }
 104 /************************************************************************
 105  *                                                                      *
 106  *                      The registration stuff                          *
 107  *                                                                      *
 108  ************************************************************************/
 109 static PyMethodDef libvirtLxcMethods[] = {
 110 #include "libvirt-lxc-export.c"
 111     {(char *) "virDomainLxcOpenNamespace", libvirt_lxc_virDomainLxcOpenNamespace, METH_VARARGS, NULL},
 112     {NULL, NULL, 0, NULL}
 113 };
 114
 115 void
 116 #ifndef __CYGWIN__
 117 initlibvirtmod_lxc
 118 #else
 119 initcygvirtmod_lxc
 120 #endif
 121   (void)
 122 {
 123     static int initialized = 0;
 124
 125     if (initialized != 0)
 126         return;
 127
 128     if (virInitialize() < 0)
 129         return;
 130
 131     /* initialize the python extension module */
 132     Py_InitModule((char *)
 133 #ifndef __CYGWIN__
 134                   "libvirtmod_lxc"
 135 #else
 136                   "cygvirtmod_lxc"
 137 #endif
 138                   , libvirtLxcMethods);
 139
 140     initialized = 1;
 141 }