Add virConnectGetLibvirtVersion API

There is currently no way to determine the libvirt version of a remote
libvirtd we are connected to. This is a useful piece of data to enable
feature detection.

3 files changed, 32 insertions, 0 deletions

diff --git a/generator.py b/generator.py
index 21b4137..0b32116 100755
--- a/generator.py
+++ b/generator.py
@@ -255,6 +255,7 @@ foreign_encoding_args = (
 # Class methods which are written by hand in libvir.c but the Python-level
 # code is still automatically generated (so they are not in skip_function()).
 skip_impl = (
+    'virConnectGetLibVersion',
     'virConnectListDomainsID',
     'virConnectListDefinedDomains',
     'virConnectListNetworks',
diff --git a/libvirt-override-api.xml b/libvirt-override-api.xml
index 148b89b..4e55182 100644
--- a/libvirt-override-api.xml
+++ b/libvirt-override-api.xml
@@ -1,6 +1,11 @@
 <?xml version="1.0"?>
 <api name='libvir-python'>
   <symbols>
+    <function name="virConnectGetLibVersion" file='python'>
+      <info>Returns the libvirt version of the connection host</info>
+      <arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/>
+      <return type='int' info="0 on success, -1 on error"/>
+    </function>
     <function name="virConnectListDomainsID" file='python'>
       <info>Returns the list of the ID of the domains on the hypervisor</info>
       <arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/>
diff --git a/libvirt-override.c b/libvirt-override.c
index 6c6155b..20037ef 100644
--- a/libvirt-override.c
+++ b/libvirt-override.c
@@ -728,6 +728,31 @@ libvirt_virGetVersion (PyObject *self ATTRIBUTE_UNUSED, PyObject *args)
         return Py_BuildValue ((char *) "kk", libVer, typeVer);
 }
 
+static PyObject *
+libvirt_virConnectGetLibVersion (PyObject *self ATTRIBUTE_UNUSED,
+                                     PyObject *args)
+{
+    unsigned long libVer;
+    int c_retval;
+    virConnectPtr conn;
+    PyObject *pyobj_conn;
+
+    if (!PyArg_ParseTuple(args, (char *)"O:virConnectGetLibVersion",
+                          &pyobj_conn))
+        return(NULL);
+    conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn);
+
+    LIBVIRT_BEGIN_ALLOW_THREADS;
+
+    c_retval = virConnectGetLibVersion(conn, &libVer);
+
+    LIBVIRT_END_ALLOW_THREADS;
+
+    if (c_retval == -1)
+        return VIR_PY_INT_FAIL;
+
+    return PyInt_FromLong (libVer);
+}
 
 static PyObject *
 libvirt_virConnectListDomainsID(PyObject *self ATTRIBUTE_UNUSED,
@@ -2398,6 +2423,7 @@ libvirt_virEventInvokeTimeoutCallback(PyObject *self ATTRIBUTE_UNUSED,
 static PyMethodDef libvirtMethods[] = {
 #include "libvirt-export.c"
     {(char *) "virGetVersion", libvirt_virGetVersion, METH_VARARGS, NULL},
+    {(char *) "virConnectGetLibVersion", libvirt_virConnectGetLibVersion, METH_VARARGS, NULL},
     {(char *) "virConnectOpenAuth", libvirt_virConnectOpenAuth, METH_VARARGS, NULL},
     {(char *) "virConnectListDomainsID", libvirt_virConnectListDomainsID, METH_VARARGS, NULL},
     {(char *) "virConnectListDefinedDomains", libvirt_virConnectListDefinedDomains, METH_VARARGS, NULL},