From b7370a6d461a02eb9c1b75c56047450577ce2394 Mon Sep 17 00:00:00 2001
From: Glenn Strauss <gstrauss@gluelogic.com>
Date: Fri, 9 Oct 2020 09:34:15 -0400
Subject: [PATCH] [core] save errno around close() if fstat() fails

(should not happen, since file was just opened)
---
 src/stat_cache.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/stat_cache.c b/src/stat_cache.c
index 8729d7bc..61f1cb1f 100644
--- a/src/stat_cache.c
+++ b/src/stat_cache.c
@@ -1101,7 +1101,9 @@ int stat_cache_open_rdonly_fstat (const buffer *name, struct stat *st, int symli
 		if (0 == fstat(fd, st)) {
 			return fd;
 		} else {
+			const int errnum = errno;
 			close(fd);
+			errno = errnum;
 		}
 	}
 	return -1;