node_memory: Expose the APIs to Python bindings

* python/libvirt-override-api.xml: (Add document to describe
  the APIs).
* python/libvirt-override.c: (Implement the API wrappers manually)

python/libvirt-override-api.xml

@@ -529,5 +529,18 @@
       <arg name='domain' type='virDomainPtr' info='a domain object'/>
       <arg name='flags' type='unsigned int' info='unused, always pass 0'/>
     </function>
+    <function name='virNodeSetMemoryParameters' file='python'>
+      <info>Change the node memory tunables</info>
+      <return type='int' info='-1 in case of error, 0 in case of success.'/>
+      <arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/>
+      <arg name='params' type='virTypedParameterPtr' info='pointer to the memory tunable objects'/>
+      <arg name='flags'  type='int' info='unused, always pass 0'/>
+    </function>
+    <function name='virNodeGetMemoryParameters' file='python'>
+      <info>Get the node memory parameters</info>
+      <return type='str *' info='None in case of error, returns a dictionary of params'/>
+      <arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/>
+      <arg name='flags' type='int' info='unused, always pass 0'/>
+    </function>
   </symbols>
 </api>

python/libvirt-override.c

@@ -6146,6 +6146,129 @@ cleanup:
     return py_retval;
 }
 
+static PyObject *
+libvirt_virNodeSetMemoryParameters(PyObject *self ATTRIBUTE_UNUSED,
+                                   PyObject *args)
+{
+    virConnectPtr conn;
+    PyObject *pyobj_conn, *info;
+    PyObject *ret = NULL;
+    int i_retval;
+    int nparams = 0;
+    Py_ssize_t size = 0;
+    unsigned int flags;
+    virTypedParameterPtr params, new_params;
+
+    if (!PyArg_ParseTuple(args,
+                          (char *)"OOi:virNodeSetMemoryParameters",
+                          &pyobj_conn, &info, &flags))
+        return NULL;
+    conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+
+    if ((size = PyDict_Size(info)) < 0)
+        return NULL;
+
+    if (size == 0) {
+        PyErr_Format(PyExc_LookupError,
+                     "Need non-empty dictionary to set attributes");
+        return NULL;
+    }
+
+    LIBVIRT_BEGIN_ALLOW_THREADS;
+    i_retval = virNodeGetMemoryParameters(conn, NULL, &nparams, flags);
+    LIBVIRT_END_ALLOW_THREADS;
+
+    if (i_retval < 0)
+        return VIR_PY_INT_FAIL;
+
+    if (nparams == 0) {
+        PyErr_Format(PyExc_LookupError,
+                     "no settable attributes");
+        return NULL;
+    }
+
+    if (VIR_ALLOC_N(params, nparams) < 0)
+        return PyErr_NoMemory();
+
+    LIBVIRT_BEGIN_ALLOW_THREADS;
+    i_retval = virNodeGetMemoryParameters(conn, params, &nparams, flags);
+    LIBVIRT_END_ALLOW_THREADS;
+
+    if (i_retval < 0) {
+        ret = VIR_PY_INT_FAIL;
+        goto cleanup;
+    }
+
+    new_params = setPyVirTypedParameter(info, params, nparams);
+    if (!new_params)
+        goto cleanup;
+
+    LIBVIRT_BEGIN_ALLOW_THREADS;
+    i_retval = virNodeSetMemoryParameters(conn, new_params, size, flags);
+    LIBVIRT_END_ALLOW_THREADS;
+
+    if (i_retval < 0) {
+        ret = VIR_PY_INT_FAIL;
+        goto cleanup;
+    }
+
+    ret = VIR_PY_INT_SUCCESS;
+
+cleanup:
+    virTypedParameterArrayClear(params, nparams);
+    VIR_FREE(params);
+    VIR_FREE(new_params);
+    return ret;
+}
+
+static PyObject *
+libvirt_virNodeGetMemoryParameters(PyObject *self ATTRIBUTE_UNUSED,
+                                   PyObject *args)
+{
+    virConnectPtr conn;
+    PyObject *pyobj_conn;
+    PyObject *ret = NULL;
+    int i_retval;
+    int nparams = 0;
+    unsigned int flags;
+    virTypedParameterPtr params;
+
+    if (!PyArg_ParseTuple(args, (char *)"Oi:virNodeGetMemoryParameters",
+                          &pyobj_conn, &flags))
+        return NULL;
+    conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+
+    LIBVIRT_BEGIN_ALLOW_THREADS;
+    i_retval = virNodeGetMemoryParameters(conn, NULL, &nparams, flags);
+    LIBVIRT_END_ALLOW_THREADS;
+
+    if (i_retval < 0)
+        return VIR_PY_NONE;
+
+    if (!nparams)
+        return PyDict_New();
+
+    if (VIR_ALLOC_N(params, nparams) < 0)
+        return PyErr_NoMemory();
+
+    LIBVIRT_BEGIN_ALLOW_THREADS;
+    i_retval = virNodeGetMemoryParameters(conn, params, &nparams, flags);
+    LIBVIRT_END_ALLOW_THREADS;
+
+    if (i_retval < 0) {
+        ret = VIR_PY_NONE;
+        goto cleanup;
+    }
+
+    ret = getPyVirTypedParameter(params, nparams);
+
+cleanup:
+    virTypedParameterArrayClear(params, nparams);
+    VIR_FREE(params);
+    return ret;
+}
+
+
 /************************************************************************
  *									*
  *			The registration stuff				*
@@ -6260,6 +6383,8 @@ static PyMethodDef libvirtMethods[] = {
     {(char *) "virDomainBlockPeek", libvirt_virDomainBlockPeek, METH_VARARGS, NULL},
     {(char *) "virDomainMemoryPeek", libvirt_virDomainMemoryPeek, METH_VARARGS, NULL},
     {(char *) "virDomainGetDiskErrors", libvirt_virDomainGetDiskErrors, METH_VARARGS, NULL},
+    {(char *) "virNodeGetMemoryParameters", libvirt_virNodeGetMemoryParameters, METH_VARARGS, NULL},
+    {(char *) "virNodeSetMemoryParameters", libvirt_virNodeSetMemoryParameters, METH_VARARGS, NULL},
     {NULL, NULL, 0, NULL}
 };