qemu: Let tests override waiting time for device unplug

We don't want tests to wait 5 seconds for an event which we know will
never come.

src/Makefile.am

@@ -636,6 +636,7 @@ QEMU_DRIVER_SOURCES =							\
 		qemu/qemu_cgroup.c qemu/qemu_cgroup.h			\
 		qemu/qemu_hostdev.c qemu/qemu_hostdev.h			\
 		qemu/qemu_hotplug.c qemu/qemu_hotplug.h			\
+		qemu/qemu_hotplugpriv.h					\
 		qemu/qemu_conf.c qemu/qemu_conf.h			\
 		qemu/qemu_process.c qemu/qemu_process.h			\
 		qemu/qemu_processpriv.h					\

src/qemu/qemu_hotplug.c

@@ -25,6 +25,7 @@
 #include <config.h>
 
 #include "qemu_hotplug.h"
+#include "qemu_hotplugpriv.h"
 #include "qemu_capabilities.h"
 #include "qemu_domain.h"
 #include "qemu_command.h"
@@ -53,6 +54,10 @@
 #define VIR_FROM_THIS VIR_FROM_QEMU
 #define CHANGE_MEDIA_RETRIES 10
 
+/* Wait up to 5 seconds for device removal to finish. */
+unsigned long long qemuDomainRemoveDeviceWaitTime = 1000ull * 5;
+
+
 int qemuDomainChangeEjectableMedia(virQEMUDriverPtr driver,
                                    virDomainObjPtr vm,
                                    virDomainDiskDefPtr disk,
@@ -2682,9 +2687,6 @@ qemuDomainRemoveDevice(virQEMUDriverPtr driver,
 }
 
 
-/* Wait up to 5 seconds for device removal to finish. */
-#define QEMU_REMOVAL_WAIT_TIME (1000ull * 5)
-
 static void
 qemuDomainMarkDeviceForRemoval(virDomainObjPtr vm,
                                virDomainDeviceInfoPtr info)
@@ -2721,7 +2723,7 @@ qemuDomainWaitForDeviceRemoval(virDomainObjPtr vm)
 
     if (virTimeMillisNow(&until) < 0)
         return -1;
-    until += QEMU_REMOVAL_WAIT_TIME;
+    until += qemuDomainRemoveDeviceWaitTime;
 
     while (priv->unpluggingDevice) {
         if (virCondWaitUntil(&priv->unplugFinished,

src/qemu/qemu_hotplugpriv.h

+/*
+ * qemu_hotplugpriv.h: private declarations for QEMU device hotplug management
+ *
+ * Copyright (C) 2013 Red Hat, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef __QEMU_HOTPLUGPRIV_H__
+# define __QEMU_HOTPLUGPRIV_H__
+
+/*
+ * This header file should never be used outside unit tests.
+ */
+
+extern unsigned long long qemuDomainRemoveDeviceWaitTime;
+
+#endif /* __QEMU_HOTPLUGPRIV_H__ */