From abafa0a0a0f95054e92b7f8602a8cae7ea8e3b6c Mon Sep 17 00:00:00 2001
From: Nicolas Williams <nico@twosigma.com>
Date: Tue, 26 Jan 2016 18:56:06 -0600
Subject: [PATCH] krb5_storage_free(): preserve errno

---
 lib/krb5/store_fd.c   | 4 +++-
 lib/krb5/store_sock.c | 6 +++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/lib/krb5/store_fd.c b/lib/krb5/store_fd.c
index 4f7466eeb..ead18be67 100644
--- a/lib/krb5/store_fd.c
+++ b/lib/krb5/store_fd.c
@@ -111,7 +111,9 @@ fd_sync(krb5_storage * sp)
 static void
 fd_free(krb5_storage * sp)
 {
-    close(FD(sp));
+    int save_errno = errno;
+    if (close(FD(sp)) == 0)
+        errno = save_errno;
 }
 
 /**
diff --git a/lib/krb5/store_sock.c b/lib/krb5/store_sock.c
index 56bb57a77..f7dc2256d 100644
--- a/lib/krb5/store_sock.c
+++ b/lib/krb5/store_sock.c
@@ -81,7 +81,11 @@ socket_sync(krb5_storage * sp)
 static void
 socket_free(krb5_storage * sp)
 {
-    rk_closesocket(SOCK(sp));
+    int save_errno = errno;
+    if (rk_IS_SOCKET_ERROR(rk_closesocket(SOCK(sp))))
+        errno = rk_SOCK_ERRNO;
+    else
+        errno = save_errno;
 }
 
 /**