event_notifier: add event_notifier_init_fd

Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

event_notifier.c

@@ -10,11 +10,18 @@
  * See the COPYING file in the top-level directory.
  */
 
+#include "qemu-common.h"
 #include "event_notifier.h"
+
 #ifdef CONFIG_EVENTFD
 #include <sys/eventfd.h>
 #endif
 
+void event_notifier_init_fd(EventNotifier *e, int fd)
+{
+    e->fd = fd;
+}
+
 int event_notifier_init(EventNotifier *e, int active)
 {
 #ifdef CONFIG_EVENTFD

event_notifier.h

@@ -16,9 +16,10 @@
 #include "qemu-common.h"
 
 struct EventNotifier {
-	int fd;
+    int fd;
 };
 
+void event_notifier_init_fd(EventNotifier *, int fd);
 int event_notifier_init(EventNotifier *, int active);
 void event_notifier_cleanup(EventNotifier *);
 int event_notifier_get_fd(EventNotifier *);