Move some logic of setRootful to a common file

Moves most of the logic of `setRootful` to the common file
`pkg/machine/machine_common.go`.

Signed-off-by: Jake Correnti <jakecorrenti+github@proton.me>

pkg/machine/hyperv/machine.go

@@ -692,22 +692,10 @@ func (m *HyperVMachine) writeConfig() error {
 }
 
 func (m *HyperVMachine) setRootful(rootful bool) error {
-	changeCon, err := machine.AnyConnectionDefault(m.Name, m.Name+"-root")
+	if err := machine.SetRootful(rootful, m.Name, m.Name+"-root"); err != nil {
-	if err != nil {
 		return err
 	}
 
-	if changeCon {
-		newDefault := m.Name
-		if rootful {
-			newDefault += "-root"
-		}
-		err := machine.ChangeDefault(newDefault)
-		if err != nil {
-			return err
-		}
-	}
-
 	m.HostUser.Modified = true
 	return nil
 }

pkg/machine/machine_common.go

@@ -122,3 +122,24 @@ func WaitAPIAndPrintInfo(forwardState APIForwardingState, name, helper, forwardS
 		}
 	}
 }
+
+// SetRootful modifies the machine's default connection to be either rootful or
+// rootless
+func SetRootful(rootful bool, name, rootfulName string) error {
+	changeCon, err := AnyConnectionDefault(name, rootfulName)
+	if err != nil {
+		return err
+	}
+
+	if changeCon {
+		newDefault := name
+		if rootful {
+			newDefault += "-root"
+		}
+		err := ChangeDefault(newDefault)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

pkg/machine/qemu/machine.go

@@ -1607,22 +1607,10 @@ func (v *MachineVM) resizeDisk(diskSize uint64, oldSize uint64) error {
 }
 
 func (v *MachineVM) setRootful(rootful bool) error {
-	changeCon, err := machine.AnyConnectionDefault(v.Name, v.Name+"-root")
+	if err := machine.SetRootful(rootful, v.Name, v.Name+"-root"); err != nil {
-	if err != nil {
 		return err
 	}
 
-	if changeCon {
-		newDefault := v.Name
-		if rootful {
-			newDefault += "-root"
-		}
-		err := machine.ChangeDefault(newDefault)
-		if err != nil {
-			return err
-		}
-	}
-
 	v.HostUser.Modified = true
 	return nil
 }

pkg/machine/wsl/machine.go

@@ -1525,22 +1525,10 @@ func getMem(vm *MachineVM) (uint64, error) {
 }
 
 func (v *MachineVM) setRootful(rootful bool) error {
-	changeCon, err := machine.AnyConnectionDefault(v.Name, v.Name+"-root")
+	if err := machine.SetRootful(rootful, v.Name, v.Name+"-root"); err != nil {
-	if err != nil {
 		return err
 	}
 
-	if changeCon {
-		newDefault := v.Name
-		if rootful {
-			newDefault += "-root"
-		}
-		err := machine.ChangeDefault(newDefault)
-		if err != nil {
-			return err
-		}
-	}
-
 	dist := toDist(v.Name)
 	return v.setupPodmanDockerSock(dist, rootful)
 }