osbuild: add support for swap in the bootupd stage

Add support for swap in bootupd device generation for both plain
and LVM partitions.

pkg/osbuild/bootupd_stage.go

@@ -110,17 +110,22 @@ func genMountsForBootupd(source string, pt *disk.PartitionTable) ([]Mount, error
 		case *disk.LVMVolumeGroup:
 			for i := range payload.LogicalVolumes {
 				lv := &payload.LogicalVolumes[i]
-				mountable, ok := lv.Payload.(disk.Mountable)
-				if !ok {
-					return nil, fmt.Errorf("expected LV payload %+[1]v to be mountable, got %[1]T", lv.Payload)
+				switch payload := lv.Payload.(type) {
+				case disk.Mountable:
+					mount, err := genOsbuildMount(lv.Name, payload)
+					if err != nil {
+						return nil, err
+					}
+					mount.Source = lv.Name
+					mounts = append(mounts, *mount)
+				case *disk.Swap:
+					// nothing to do
+				default:
+					return nil, fmt.Errorf("expected LV payload %+[1]v to be mountable or swap, got %[1]T", lv.Payload)
 				}
-				mount, err := genOsbuildMount(lv.Name, mountable)
-				if err != nil {
-					return nil, err
-				}
-				mount.Source = lv.Name
-				mounts = append(mounts, *mount)
 			}
+		case *disk.Swap:
+			// nothing to do
 		default:
 			return nil, fmt.Errorf("type %T not supported by bootupd handling yet", part.Payload)
 		}

pkg/osbuild/bootupd_stage_test.go

@@ -249,6 +249,13 @@ var fakePt = &disk.PartitionTable{
 				FSTabPassNo:  1,
 			},
 		},
+		{
+			Size: 2 * datasizes.GibiByte,
+			Type: disk.SwapPartitionGUID,
+			Payload: &disk.Swap{
+				Label: "swap",
+			},
+		},
 	},
 }
 
@@ -354,7 +361,8 @@ func TestGenBootupdDevicesMountsHappyLVM(t *testing.T) {
 		UEFIVendor:   "test",
 	}
 
-	fakePt := testdisk.MakeFakeLVMPartitionTable("/", "/home", "/boot/efi", "/boot")
+	fakePt := testdisk.MakeFakeLVMPartitionTable("/", "/home", "/boot/efi", "/boot", "swap")
+
 	devices, mounts, err := osbuild.GenBootupdDevicesMounts(filename, fakePt, pf)
 	require.Nil(t, err)
 	assert.Equal(t, devices, map[string]osbuild.Device{
@@ -381,6 +389,14 @@ func TestGenBootupdDevicesMountsHappyLVM(t *testing.T) {
 				VGPartnum: common.ToPtr(3),
 			},
 		},
+		"lv-for-swap": {
+			Type:   "org.osbuild.lvm2.lv",
+			Parent: "disk",
+			Options: &osbuild.LVM2LVDeviceOptions{
+				Volume:    "lv-for-swap",
+				VGPartnum: common.ToPtr(3),
+			},
+		},
 	})
 	assert.Equal(t, []osbuild.Mount{
 		{
@@ -424,5 +440,5 @@ func TestGenBootupdDevicesMountsLVM_NotMountableLV(t *testing.T) {
 
 	_, _, err := osbuild.GenBootupdDevicesMounts(filename, fakePt, pf)
 	require.Error(t, err)
-	require.Regexp(t, `expected LV payload .* to be mountable, got \*disk.LUKSContainer`, err.Error())
+	require.Regexp(t, `expected LV payload .* to be mountable or swap, got \*disk.LUKSContainer`, err.Error())
 }