From d99c2e2df289dad19a4c0ec554761698ea115c0a Mon Sep 17 00:00:00 2001
From: Valient Gough <vgough@pobox.com>
Date: Thu, 8 Sep 2016 10:13:38 +0200
Subject: [PATCH] improve error handling in flush operation

---
 encfs/encfs.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/encfs/encfs.cpp b/encfs/encfs.cpp
index 31d3e7d..e87fcaa 100644
--- a/encfs/encfs.cpp
+++ b/encfs/encfs.cpp
@@ -564,8 +564,14 @@ int _do_flush(FileNode *fnode) {
   int res = fnode->open(O_RDONLY);
   if (res >= 0) {
     int fh = res;
-    res = close(dup(fh));
-    if (res == -1) res = -errno;
+    int nfh = dup(fh);
+    if (nfh == -1) {
+      return -errno;
+    }
+    res = close(nfh);
+    if (res == -1) {
+      return -errno;
+    }
   }
 
   return res;