We don't have a better way to panic / exit, but at least this
allows propagation upwards for better handling later, and in
the case of event_fn cleanly exits the node from the cluster
by dieing instead of causing potentially more harm when going on.

Signed-off-by: Christoph Hellwig <hch@lst.de>

Index: sheepdog/sheep/group.c
===================================================================
--- sheepdog.orig/sheep/group.c	2012-04-25 10:05:50.604164601 +0200
+++ sheepdog/sheep/group.c	2012-04-25 10:05:55.484164724 +0200
@@ -933,6 +933,7 @@ static void event_fn(struct work *work)
 static void event_done(struct work *work)
 {
 	struct event_struct *cevent;
+	int ret;
 
 	if (!sys->cur_cevent)
 		vprintf(SDOG_ERR, "bug\n");
@@ -962,7 +963,9 @@ static void event_done(struct work *work
 	vprintf(SDOG_DEBUG, "free %p\n", cevent);
 	event_free(cevent);
 	event_running = 0;
-	register_event(cdrv_fd, group_handler, NULL);
+	ret = register_event(cdrv_fd, group_handler, NULL);
+	if (ret)
+		panic("failed to register event fd");
 
 	if (!list_empty(&sys->event_queue))
 		process_request_event_queues();
Index: sheepdog/sheep/work.c
===================================================================
--- sheepdog.orig/sheep/work.c	2012-04-25 10:05:19.276163797 +0200
+++ sheepdog/sheep/work.c	2012-04-25 10:05:55.484164724 +0200
@@ -219,7 +219,7 @@ static int init_eventfd(void)
 
 	ret = register_event(efd, bs_thread_request_done, NULL);
 	if (ret) {
-		eprintf("failed to register event fdL %m\n");
+		eprintf("failed to register event fd %m\n");
 		close(efd);
 		return 1;
 	}