autofs-5.1.8 - improve handling of ENOENT in sss setautomntent()

From: Ian Kent <raven@themaw.net>

In the sss lookup module function setautomntent() a return of ENOENT
isn't handled quite right.

If ENOENT (rather than EHOSTDOWN) is returned from sss setautomntent()
we should assume the LDAP info. has been read by sss and the entry in
fact doesn't exist.

Signed-off-by: Ian Kent <raven@themaw.net>
---
 CHANGELOG            |    1 +
 modules/lookup_sss.c |   16 +++++++++++++++-
 2 files changed, 16 insertions(+), 1 deletion(-)

--- autofs-5.1.4.orig/CHANGELOG
+++ autofs-5.1.4/CHANGELOG
@@ -106,6 +106,7 @@
 - fix minus only option handling in concat_options().
 - fix incorrect path for is_mounted() in try_remount().
 - fail on empty replicated host name.
+- improve handling of ENOENT in sss setautomntent().
 
 xx/xx/2018 autofs-5.1.5
 - fix flag file permission.
--- autofs-5.1.4.orig/modules/lookup_sss.c
+++ autofs-5.1.4/modules/lookup_sss.c
@@ -394,7 +394,17 @@ static int setautomntent(unsigned int lo
 			if (ret != ENOENT)
 				goto error;
 		} else {
-			if (ret != ENOENT && ret != EHOSTDOWN)
+			/* If we get an ENOENT here assume it's accurrate
+			 * and return the error.
+			 */
+			if (ret == ENOENT) {
+				error(logopt, MODPREFIX
+				      "setautomountent: entry for map %s not found",
+				      ctxt->mapname);
+				err = NSS_STATUS_NOTFOUND;
+				goto free;
+			}
+			if (ret != EHOSTDOWN)
 				goto error;
 		}
 
@@ -410,6 +420,10 @@ static int setautomntent(unsigned int lo
 			if (ret == EINVAL)
 				goto free;
 			if (ret == ENOENT) {
+				/* Map info. not found after host became available */
+				error(logopt, MODPREFIX
+				      "setautomountent: entry for map %s not found",
+				      ctxt->mapname);
 				err = NSS_STATUS_NOTFOUND;
 				goto free;
 			}