qemu: Validate disk against domain def on coldplug

https://bugzilla.redhat.com/show_bug.cgi?id=1692296#c7

This is a counterpart for ddc72f99 and implements the same
check for coldplug.
Signed-off-by: NMichal Privoznik <mprivozn@redhat.com>
Reviewed-by: NErik Skultety <eskultet@redhat.com>

src/qemu/qemu_driver.c

@@ -8066,6 +8066,21 @@ qemuDomainUpdateDeviceLive(virDomainObjPtr vm,
     return ret;
 }
 
+
+static int
+qemuCheckDiskConfigAgainstDomain(const virDomainDef *def,
+                                 const virDomainDiskDef *disk)
+{
+    if (virDomainSCSIDriveAddressIsUsed(def, &disk->info.addr.drive)) {
+        virReportError(VIR_ERR_OPERATION_INVALID, "%s",
+                       _("Domain already contains a disk with that address"));
+        return -1;
+    }
+
+    return 0;
+}
+
+
 static int
 qemuDomainAttachDeviceConfig(virDomainDefPtr vmdef,
                              virDomainDeviceDefPtr dev,
@@ -8094,6 +8109,8 @@ qemuDomainAttachDeviceConfig(virDomainDefPtr vmdef,
             return -1;
         if (qemuCheckDiskConfig(disk, NULL) < 0)
             return -1;
+        if (qemuCheckDiskConfigAgainstDomain(vmdef, disk) < 0)
+            return -1;
         if (virDomainDiskInsert(vmdef, disk) < 0)
             return -1;
         /* vmdef has the pointer. Generic codes for vmdef will do all jobs */