list: Expose virConnectListAllInterfaces to Python binding

The implementation is done manually as the generator does not support
wrapping lists of C pointers into Python objects.

python/libvirt-override-api.xml: Document

python/libvirt-override-virConnect.py:
  * New file, includes implementation of listAllInterfaces.

python/libvirt-override.c: Implementation for the wrapper.

libvirt-override-api.xml

@@ -416,6 +416,12 @@
       <arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/>
       <return type='str *' info='the list of Names of None in case of error'/>
     </function>
+    <function name='virConnectListAllInterfaces' file='python'>
+      <info>returns list of all interfaces</info>
+      <arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/>
+      <arg name='flags' type='unsigned int' info='optional flags'/>
+      <return type='interface *' info='the list of interfaces or None in case of error'/>
+    </function>
     <function name='virConnectBaselineCPU' file='python'>
       <info>Computes the most feature-rich CPU which is compatible with all given host CPUs.</info>
       <return type='char *' info='XML description of the computed CPU or NULL on error.'/>

libvirt-override-virConnect.py

@@ -230,3 +230,15 @@
             retlist.append(virNetwork(self, _obj=netptr))
 
         return retlist
+
+    def listAllInterfaces(self, flags):
+        """Returns a list of interface objects"""
+        ret = libvirtmod.virConnectListAllInterfaces(self._o, flags)
+        if ret is None:
+            raise libvirtError("virConnectListAllInterfaces() failed", conn=self)
+
+        retlist = list()
+        for ifaceptr in ret:
+            retlist.append(virInterface(self, _obj=ifaceptr))
+
+        return retlist

libvirt-override.c

@@ -3827,6 +3827,53 @@ libvirt_virConnectListDefinedInterfaces(PyObject *self ATTRIBUTE_UNUSED,
 }
 
 
+static PyObject *
+libvirt_virConnectListAllInterfaces(PyObject *self ATTRIBUTE_UNUSED,
+                                    PyObject *args)
+{
+    PyObject *pyobj_conn;
+    PyObject *py_retval = NULL;
+    PyObject *tmp = NULL;
+    virConnectPtr conn;
+    virInterfacePtr *ifaces = NULL;
+    int c_retval = 0;
+    int i;
+    unsigned int flags;
+
+    if (!PyArg_ParseTuple(args, (char *)"Oi:virConnectListAllInterfaces",
+                          &pyobj_conn, &flags))
+        return NULL;
+    conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+
+    LIBVIRT_BEGIN_ALLOW_THREADS;
+    c_retval = virConnectListAllInterfaces(conn, &ifaces, flags);
+    LIBVIRT_END_ALLOW_THREADS;
+    if (c_retval < 0)
+        return VIR_PY_NONE;
+
+    if (!(py_retval = PyList_New(c_retval)))
+        goto cleanup;
+
+    for (i = 0; i < c_retval; i++) {
+        if (!(tmp = libvirt_virInterfacePtrWrap(ifaces[i])) ||
+            PyList_SetItem(py_retval, i, tmp) < 0) {
+            Py_XDECREF(tmp);
+            Py_DECREF(py_retval);
+            py_retval = NULL;
+            goto cleanup;
+        }
+        /* python steals the pointer */
+        ifaces[i] = NULL;
+    }
+
+cleanup:
+    for (i = 0; i < c_retval; i++)
+        if (ifaces[i])
+            virInterfaceFree(ifaces[i]);
+    VIR_FREE(ifaces);
+    return py_retval;
+}
+
 static PyObject *
 libvirt_virConnectBaselineCPU(PyObject *self ATTRIBUTE_UNUSED,
                               PyObject *args) {
@@ -6053,6 +6100,7 @@ static PyMethodDef libvirtMethods[] = {
     {(char *) "virConnectListNWFilters", libvirt_virConnectListNWFilters, METH_VARARGS, NULL},
     {(char *) "virConnectListInterfaces", libvirt_virConnectListInterfaces, METH_VARARGS, NULL},
     {(char *) "virConnectListDefinedInterfaces", libvirt_virConnectListDefinedInterfaces, METH_VARARGS, NULL},
+    {(char *) "virConnectListAllInterfaces", libvirt_virConnectListAllInterfaces, METH_VARARGS, NULL},
     {(char *) "virConnectBaselineCPU", libvirt_virConnectBaselineCPU, METH_VARARGS, NULL},
     {(char *) "virDomainGetJobInfo", libvirt_virDomainGetJobInfo, METH_VARARGS, NULL},
     {(char *) "virDomainSnapshotListNames", libvirt_virDomainSnapshotListNames, METH_VARARGS, NULL},