auto daemon-reload where applicable

app.go

@@ -253,6 +253,9 @@ func (a *App) setupClientMount() error {
 		return err
 	}
 	if mountNow {
+		if err := a.reloadSystemdIfNeeded(); err != nil {
+			return err
+		}
 		if err := a.mountCIFS(cfg.MountPoint); err != nil {
 			return err
 		}
@@ -779,6 +782,26 @@ func (a *App) mountCIFS(path string) error {
 	return nil
 }
 
+func (a *App) reloadSystemdIfNeeded() error {
+	if _, err := os.Stat("/run/systemd/system"); err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return fmt.Errorf("check for systemd: %w", err)
+	}
+
+	if a.lookPath != nil {
+		if _, err := a.lookPath("systemctl"); err != nil {
+			return nil
+		}
+	}
+
+	if err := a.runPrivilegedOrLocal("systemctl", []string{"daemon-reload"}, "Refreshing system mount settings needs administrator permission."); err != nil {
+		return fmt.Errorf("reload systemd after updating /etc/fstab: %w", err)
+	}
+	return nil
+}
+
 func (a *App) ensureShareDirectories(doc *Document) error {
 	for _, section := range doc.ShareSections() {
 		cfg := ShareFromSection(section)