Implement python binding for virDomainGetBlockInfo

This binds the virDomainGetBlockInfo API to python's blockInfo
method on the domain object

>>> c = libvirt.openReadOnly('qemu:///session')
>>> d = c.lookupByName('demo')
>>> f = d.blockInfo("/dev/loop0", 0)
>>> print f
[1048576000L, 104857600L, 104857600L]

* python/libvirt-override-api.xml: Define override signature
* python/generator.py: Skip C impl generator for virDomainGetBlockInfo
* python/libvirt-override.c: Manual impl of virDomainGetBlockInfo

python/generator.py

@@ -288,6 +288,7 @@ skip_impl = (
     'virConnGetLastError',
     'virGetLastError',
     'virDomainGetInfo',
+    'virDomainGetBlockInfo',
     'virDomainGetJobInfo',
     'virNodeGetInfo',
     'virDomainGetUUID',

python/libvirt-override-api.xml

@@ -48,6 +48,13 @@
       <return type='int *' info='the list of information or None in case of error'/>
       <arg name='domain' type='virDomainPtr' info='a domain object'/>
     </function>
+    <function name='virDomainGetBlockInfo' file='python'>
+      <info>Extract information about a domain block device size</info>
+      <return type='int *' info='the list of information or None in case of error'/>
+      <arg name='domain' type='virDomainPtr' info='a domain object'/>
+      <arg name='path' type='const char *' info='path to the block device or file'/>
+      <arg name='flags' type='unsigned int' info='currently unused'/>
+    </function>
     <function name='virDomainGetJobInfo' file='python'>
       <info>Extract information about an active job being processed for a domain.</info>
       <return type='int *' info='the list of information or None in case of error'/>

python/libvirt-override.c

@@ -1014,6 +1014,32 @@ libvirt_virDomainGetInfo(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) {
     return(py_retval);
 }
 
+static PyObject *
+libvirt_virDomainGetBlockInfo(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) {
+    PyObject *py_retval;
+    int c_retval;
+    virDomainPtr domain;
+    PyObject *pyobj_domain;
+    virDomainBlockInfo info;
+    const char *path;
+    unsigned int flags;
+
+    if (!PyArg_ParseTuple(args, (char *)"Ozi:virDomainGetInfo", &pyobj_domain, &path, &flags))
+        return(NULL);
+    domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain);
+
+    LIBVIRT_BEGIN_ALLOW_THREADS;
+    c_retval = virDomainGetBlockInfo(domain, path, &info, flags);
+    LIBVIRT_END_ALLOW_THREADS;
+    if (c_retval < 0)
+        return VIR_PY_NONE;
+    py_retval = PyList_New(3);
+    PyList_SetItem(py_retval, 0, libvirt_ulonglongWrap(info.capacity));
+    PyList_SetItem(py_retval, 1, libvirt_ulonglongWrap(info.allocation));
+    PyList_SetItem(py_retval, 2, libvirt_ulonglongWrap(info.physical));
+    return(py_retval);
+}
+
 static PyObject *
 libvirt_virNodeGetInfo(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) {
     PyObject *py_retval;
@@ -3393,6 +3419,7 @@ static PyMethodDef libvirtMethods[] = {
     {(char *) "virConnectDomainEventRegisterAny", libvirt_virConnectDomainEventRegisterAny, METH_VARARGS, NULL},
     {(char *) "virConnectDomainEventDeregisterAny", libvirt_virConnectDomainEventDeregisterAny, METH_VARARGS, NULL},
     {(char *) "virDomainGetInfo", libvirt_virDomainGetInfo, METH_VARARGS, NULL},
+    {(char *) "virDomainGetBlockInfo", libvirt_virDomainGetBlockInfo, METH_VARARGS, NULL},
     {(char *) "virNodeGetInfo", libvirt_virNodeGetInfo, METH_VARARGS, NULL},
     {(char *) "virDomainGetUUID", libvirt_virDomainGetUUID, METH_VARARGS, NULL},
     {(char *) "virDomainGetUUIDString", libvirt_virDomainGetUUIDString, METH_VARARGS, NULL},