From 92a0f7d3cc7fc1206e0a763ab737f797b8946ca7 Mon Sep 17 00:00:00 2001
From: NeilBrown <neilb@suse.de>
Date: Wed, 25 Oct 2023 12:34:45 -0400
Subject: [PATCH] export: fix handling of error from match_fsid()

If match_fsid() returns -1 we shouldn't assume that the path definitely
doesn't match the fsid, though it might not.
This is a similar situation to where an export is expected to be a mount
point, but is found not to be one.  So it can be handled the same way,
by setting 'dev_missing'.
This will only have an effect if no other path matched the fsid, which
is what we want.

The current code results in nothing being exported if any export point,
or any mount point beneath a crossmnt export point, fails a 'stat'
request, which is too harsh.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
---
 support/export/cache.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/support/export/cache.c b/support/export/cache.c
index 19bbba5..e459502 100644
--- a/support/export/cache.c
+++ b/support/export/cache.c
@@ -858,7 +858,8 @@ static void nfsd_fh(int f)
 			case 0:
 				continue;
 			case -1:
-				goto out;
+				dev_missing ++;
+				continue;
 			}
 			if (is_ipaddr_client(dom)
 					&& !ipaddr_client_matches(exp, ai))
-- 
1.8.3.1