From 85d36f1469437018e1fe40861933ad2e7116e679 Mon Sep 17 00:00:00 2001
From: Balazs Gerofi <bgerofi@riken.jp>
Date: Tue, 31 Oct 2017 13:39:31 +0900
Subject: [PATCH] mcexec: check kernel version <= 3.10 for RHEL mcoverlayfs

---
 executer/user/mcexec.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/executer/user/mcexec.c b/executer/user/mcexec.c
index 613390ad..2d0d50ef 100644
--- a/executer/user/mcexec.c
+++ b/executer/user/mcexec.c
@@ -148,17 +148,25 @@ char **__glob_argv = 0;
 
 #ifdef ENABLE_MCOVERLAYFS
 #undef ENABLE_MCOVERLAYFS
-#ifndef RHEL_RELEASE_CODE
+
+// RedHat?
+#ifdef RHEL_RELEASE_CODE
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(3,10,0)
+#define ENABLE_MCOVERLAYFS 1
+#else
+#error "ERROR: your Linux kernel version on RHEL is not supported"
+#endif // LINUX_VERSION_CODE <= KERNEL_VERSION(3,10,0)
+
+// Other distro?
+#else
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,0,0) && LINUX_VERSION_CODE < KERNEL_VERSION(4,1,0)
 #define ENABLE_MCOVERLAYFS 1
 #endif // LINUX_VERSION_CODE == 4.0
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,6,0) && LINUX_VERSION_CODE < KERNEL_VERSION(4,7,0)
 #define ENABLE_MCOVERLAYFS 1
 #endif // LINUX_VERSION_CODE == 4.6
-#else
-#if RHEL_RELEASE_CODE <= RHEL_RELEASE_VERSION(7,3) 
-#define ENABLE_MCOVERLAYFS 1
-#endif // RHEL_RELEASE_CODE <= 7.3
+
 #endif // RHEL_RELEASE_CODE
 #endif // ENABLE_MCOVERLAYFS