[libvirt] [PATCH 2/9] domain_conf: Validate redirdev after parsing

[Michal Privoznik]

There's currently just one limitation: redirdevs that want to go
on USB bus require a USB controller, surprisingly.

Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
 src/conf/domain_conf.c | 33 +++++++++++++++++++++++++++------
 1 file changed, 27 insertions(+), 6 deletions(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 85f6e31..8f5935c 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -4567,14 +4567,39 @@ virDomainDiskDefValidate(const virDomainDiskDef *disk)
     return 0;
 }
 
+static int
+virDomainRedirdevDefValidate(const virDomainDef *def,
+                             const virDomainRedirdevDef *redirdev)
+{
+    size_t i;
+
+    if (redirdev->bus != VIR_DOMAIN_REDIRDEV_BUS_USB)
+        return 0;
+
+    for (i = 0; i < def->ncontrollers; i++) {
+        virDomainControllerDefPtr controller = def->controllers[i];
+
+        if (controller->type == VIR_DOMAIN_CONTROLLER_TYPE_USB &&
+            controller->model == VIR_DOMAIN_CONTROLLER_MODEL_USB_NONE) {
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                           _("Can't add redirected USB device: "
+                             "USB is disabled for this domain"));
+        }
+    }
+
+    return 0;
+}
+
 
 static int
 virDomainDeviceDefValidateInternal(const virDomainDeviceDef *dev,
-                                   const virDomainDef *def ATTRIBUTE_UNUSED)
+                                   const virDomainDef *def)
 {
     switch ((virDomainDeviceType) dev->type) {
     case VIR_DOMAIN_DEVICE_DISK:
         return virDomainDiskDefValidate(dev->data.disk);
+    case VIR_DOMAIN_DEVICE_REDIRDEV:
+        return virDomainRedirdevDefValidate(def, dev->data.redirdev);
     case VIR_DOMAIN_DEVICE_LEASE:
     case VIR_DOMAIN_DEVICE_FS:
     case VIR_DOMAIN_DEVICE_NET:
@@ -4586,7 +4611,6 @@ virDomainDeviceDefValidateInternal(const virDomainDeviceDef *dev,
     case VIR_DOMAIN_DEVICE_CONTROLLER:
     case VIR_DOMAIN_DEVICE_GRAPHICS:
     case VIR_DOMAIN_DEVICE_HUB:
-    case VIR_DOMAIN_DEVICE_REDIRDEV:
     case VIR_DOMAIN_DEVICE_SMARTCARD:
     case VIR_DOMAIN_DEVICE_CHR:
     case VIR_DOMAIN_DEVICE_MEMBALLOON:
@@ -17060,10 +17084,7 @@ virDomainDefParseXML(xmlDocPtr xml,
         if (!redirdev)
             goto error;
 
-        if (redirdev->bus == VIR_DOMAIN_REDIRDEV_BUS_USB && usb_none) {
-             virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
-                            _("Can't add redirected USB device: "
-                              "USB is disabled for this domain"));
+        if (virDomainRedirdevDefValidate(def, redirdev) < 0) {
             virDomainRedirdevDefFree(redirdev);
             goto error;
         }
-- 
2.8.4