Re: [dbus PATCH 7/8] Implement GetCPUModelNames method for Connect Interface

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On Fri, 2018-04-20 at 13:39 +0200, Ján Tomko wrote:
> On Thu, Apr 19, 2018 at 03:58:06PM +0200, Katerina Koukiou wrote:
> > Signed-off-by: Katerina Koukiou <kkoukiou@xxxxxxxxxx>
> > ---
> > data/org.libvirt.Connect.xml |  7 +++++++
> > src/connect.c                | 35
> > +++++++++++++++++++++++++++++++++++
> > tests/test_connect.py        |  4 ++++
> > 3 files changed, 46 insertions(+)
> > 
> > diff --git a/data/org.libvirt.Connect.xml
> > b/data/org.libvirt.Connect.xml
> > index 3ef965d..43a6241 100644
> > --- a/data/org.libvirt.Connect.xml
> > +++ b/data/org.libvirt.Connect.xml
> > @@ -106,6 +106,13 @@
> >         value="See https://libvirt.org/html/libvirt-libvirt-host.ht
> > ml#virConnectGetCapabilities"/>;
> >       <arg name="capabilities" type="s" direction="out"/>
> >     </method>
> > +    <method name="GetCPUModelNames">
> > +      <annotation name="org.gtk.GDBus.DocString"
> > +        value="See https://libvirt.org/html/libvirt-libvirt-host.h
> > tml#virConnectGetCPUModelNames"/>;
> > +      <arg name="arch" type="s" direction="in"/>
> > +      <arg name="flags" type="u" direction="in"/>
> > +      <arg name="models" type="as" direction="out"/>
> > +    </method>
> >     <method name="GetSysinfo">
> >       <annotation name="org.gtk.GDBus.DocString"
> >         value="See https://libvirt.org/html/libvirt-libvirt-host.ht
> > ml#virConnectGetSysinfo"/>;
> > diff --git a/src/connect.c b/src/connect.c
> > index e774fa4..169a070 100644
> > --- a/src/connect.c
> > +++ b/src/connect.c
> > @@ -542,6 +542,40 @@ virtDBusConnectGetAllDomainStats(GVariant
> > *inArgs,
> >     *outArgs = g_variant_new_tuple(&gret, 1);
> > }
> > 
> > +static void
> > +virtDBusConnectGetCPUModelNames(GVariant *inArgs,
> > +                                GUnixFDList *inFDs G_GNUC_UNUSED,
> > +                                const gchar *objectPath
> > G_GNUC_UNUSED,
> > +                                gpointer userData,
> > +                                GVariant **outArgs,
> > +                                GUnixFDList **outFDs
> > G_GNUC_UNUSED,
> > +                                GError **error)
> > +{
> > +    virtDBusConnect *connect = userData;
> > +    const gchar *arch;
> > +    guint flags;
> > +    g_autoptr(GCharArray) models = NULL;
> 
> This will need to be changed.
> 
> > +    gint nmodels;
> > +    GVariant *gret;
> > +    GVariantBuilder builder;
> > +
> > +    g_variant_get(inArgs, "(&su)", &arch, &flags);
> > +
> > +    if (!virtDBusConnectOpen(connect, error))
> > +        return;
> > +
> > +    nmodels = virConnectGetCPUModelNames(connect->connection,
> > arch, &models, flags);
> 
> The API documentation also states:
> Pass NULL if only the list length is needed.
> But that does not seem like useful functionality.

Anyway, we can't support it, since @models is output and not input
variable, so we can't pass NULL there somehow.

Katerina 

> 
> > +    if (nmodels < 0)
> > +        return virtDBusUtilSetLastVirtError(error);
> > +
> > +    g_variant_builder_init(&builder, G_VARIANT_TYPE("as"));
> > +    for (gint i = 0; i < nmodels; i++)
> > +        g_variant_builder_add(&builder, "s", models[i]);
> > +    gret = g_variant_builder_end(&builder);
> > +
> > +    *outArgs = g_variant_new_tuple(&gret, 1);
> > +}
> > +
> 
> Reviewed-by: Ján Tomko <jtomko@xxxxxxxxxx>
> 
> Jano

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