From 0cea74888868b24f01bba4b916e754b04041ca98 Mon Sep 17 00:00:00 2001
From: "Wiktor S. Ovalle Correa" <w.s.ovalle@mudita.com>
Date: Tue, 2 Feb 2021 17:14:34 +0100
Subject: [PATCH] [EGD-5596] Fix fread() handling of EOF

iosyscalls' fread() should interpret zero bytes read as EOF.
---
 board/linux/libiosyscalls/src/syscalls_stdio.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/board/linux/libiosyscalls/src/syscalls_stdio.cpp b/board/linux/libiosyscalls/src/syscalls_stdio.cpp
index f1f61a0ebd2833fff7fb1a275d2b1787436b5a15..5cca1a606710654e810e590e2afad3b2e3dd9962 100644
--- a/board/linux/libiosyscalls/src/syscalls_stdio.cpp
+++ b/board/linux/libiosyscalls/src/syscalls_stdio.cpp
@@ -454,7 +454,7 @@ extern "C"
                 char *p = reinterpret_cast<char *>(__ptr);
                 do {
                     auto res       = vfs::invoke_fs(&fs::read, fx->fd, p, __size);
-                    const auto eof = res > 0 && size_t(res) < __size;
+                    const auto eof = res >= 0 && size_t(res) < __size;
                     fx->error      = errno;
                     if (res < 0 || eof)
                         break;