autofs-5.1.1 - fix direct map expire not set for initial empty map

From: Ian Kent <raven@themaw.net>

If an empty direct map is present at startup the expire alarm can't be
set because the expire run frequency isn't known. But if the map is
re-read and is no longer empty the expire alarm wasn't being set.

Fix suggested by xuw at redhat dot com, thanks.

Signed-off-by: Ian Kent <raven@themaw.net>
---
 CHANGELOG      |    1 +
 daemon/state.c |   10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/CHANGELOG b/CHANGELOG
index 7bd261a..52b166d 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -14,6 +14,7 @@
 - fix config old name lookup.
 - fix error handling on ldap bind fail.
 - fix direct mount stale instance flag reset.
+- fix direct map expire not set for initail empty map.
 
 21/04/2015 autofs-5.1.1
 =======================
diff --git a/daemon/state.c b/daemon/state.c
index 3bea4af..6c8c4f6 100644
--- a/daemon/state.c
+++ b/daemon/state.c
@@ -488,6 +488,7 @@ static void *do_readmap(void *arg)
 		status = lookup_ghost(ap, ap->path);
 	} else {
 		struct mapent *me;
+		unsigned int append_alarm = !ap->exp_runfreq;
 
 		mnts = tree_make_mnt_tree(_PROC_MOUNTS, "/");
 		pthread_cleanup_push(tree_mnts_cleanup, mnts);
@@ -517,6 +518,15 @@ static void *do_readmap(void *arg)
 			map->stale = 0;
 			map = map->next;
 		}
+
+		/* If the direct mount map was empty at startup no expire
+		 * alarm will have been added. So add it here if there are
+		 * now map entries.
+		 */
+		if (append_alarm && ap->exp_runfreq)
+			alarm_add(ap, ap->exp_runfreq +
+				  rand() % ap->exp_runfreq);
+
 		pthread_cleanup_pop(1);
 		pthread_cleanup_pop(1);
 		pthread_cleanup_pop(1);