qemu: command: take fsdriver type into account

Split the formatting by fsdriver type to allow adding a new type.
Signed-off-by: NJán Tomko <jtomko@redhat.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>

src/qemu/qemu_command.c

@@ -2678,8 +2678,21 @@ qemuBuildFilesystemCommandLine(virCommandPtr cmd,
     size_t i;
 
     for (i = 0; i < def->nfss; i++) {
+        switch ((virDomainFSDriverType) def->fss[i]->fsdriver) {
+        case VIR_DOMAIN_FS_DRIVER_TYPE_DEFAULT:
+        case VIR_DOMAIN_FS_DRIVER_TYPE_PATH:
+        case VIR_DOMAIN_FS_DRIVER_TYPE_HANDLE:
+            /* these drivers are handled by virtio-9p-pci */
             if (qemuBuildFSDevCommandLine(cmd, def->fss[i], def, qemuCaps) < 0)
                 return -1;
+            break;
+
+        case VIR_DOMAIN_FS_DRIVER_TYPE_LOOP:
+        case VIR_DOMAIN_FS_DRIVER_TYPE_NBD:
+        case VIR_DOMAIN_FS_DRIVER_TYPE_PLOOP:
+        case VIR_DOMAIN_FS_DRIVER_TYPE_LAST:
+            break;
+        }
     }
 
     return 0;