autofs-5.0.8 - fix cache readlock not taken on lookup

From: Ian Kent <raven@themaw.net>

In modules/lookup_yp.c:check_map_indirect() there's a missing cache

readlock.

---

 CHANGELOG           |    1 +

 modules/lookup_yp.c |    6 +++++-

 2 files changed, 6 insertions(+), 1 deletion(-)

--- autofs-5.0.7.orig/CHANGELOG

+++ autofs-5.0.7/CHANGELOG

@@ -81,6 +81,7 @@

 - fix symlink fail message in mount_bind.c.

 - add std vars to program map invocation.

 - check for existing offset mount before mounting.

+- fix cache readlock not taken on lookup.

 25/07/2012 autofs-5.0.7

 =======================

--- autofs-5.0.7.orig/modules/lookup_yp.c

+++ autofs-5.0.7/modules/lookup_yp.c

@@ -517,9 +517,13 @@ static int check_map_indirect(struct aut

 		 * If the server is down and the entry exists in the cache

 		 * and belongs to this map return success and use the entry.

 		 */

+		cache_readlock(mc);

 		exists = cache_lookup(mc, key);

-		if (exists && exists->source == source)

+		if (exists && exists->source == source) {

+			cache_unlock(mc);

 			return NSS_STATUS_SUCCESS;

+		}

+		cache_unlock(mc);

 		warn(ap->logopt,

 		     MODPREFIX "lookup for %s failed: %s",