[gnome-boxes/hide-snapshots-for-uefi] libvirt-machine-properties: Show Snapshot tab only when supported

[Felipe Borges <felipeborges src gnome org>]

commit 80dbe58bb0e85a36dd54b81455516f4e56d620db
Author: Felipe Borges <felipeborges gnome org>
Date:   Fri Sep 4 10:29:44 2020 +0200

    libvirt-machine-properties: Show Snapshot tab only when supported
    
    Unfortunately we can't snapshot EFI guests yet, see
    https://gitlab.gnome.org/GNOME/gnome-boxes/-/commit/8b4eaf4a7f24
    Although that is in the works and will likely be available in our
    next stable version.
    https://gitlab.gnome.org/GNOME/gnome-boxes/-/issues/199#note_862711
    
    Fixes #592

 src/libvirt-machine-properties.vala | 2 +-
 src/libvirt-machine.vala            | 8 ++++++++
 2 files changed, 9 insertions(+), 1 deletion(-)
---
diff --git a/src/libvirt-machine-properties.vala b/src/libvirt-machine-properties.vala
index 4661bd2b..93c59e9f 100644
--- a/src/libvirt-machine-properties.vala
+++ b/src/libvirt-machine-properties.vala
@@ -146,7 +146,7 @@ public string collect_logs () {
         case PropertiesPage.SNAPSHOTS:
             try {
                 var config = machine.domain.get_config (0);
-                if (!VMConfigurator.is_install_config (config))
+                if (!VMConfigurator.is_install_config (config) && !machine.firmware_is_efi)
                     add_snapshots_property (ref list);
             } catch (GLib.Error e) {
                 warning (e.message);
diff --git a/src/libvirt-machine.vala b/src/libvirt-machine.vala
index 28fa7878..fad51144 100644
--- a/src/libvirt-machine.vala
+++ b/src/libvirt-machine.vala
@@ -85,6 +85,14 @@
         }
     }
 
+    public bool firmware_is_efi {
+        get {
+            var os = domain_config.get_os ();
+
+            return (os.get_firmware () == GVirConfig.DomainOsFirmware.EFI);
+        }
+    }
+
     public override bool is_local {
         get {
             // If the URI is prefixed by "qemu" or "qemu+unix" and the domain is "system" of "session" then 
it is local.