From 6ec747105bfa8d52aca77bc577268f1944b19585 Mon Sep 17 00:00:00 2001
From: Michal Idziorek <m.i@gmx.at>
Date: Tue, 25 Nov 2014 12:22:35 +0100
Subject: started adding stack shmashing protection

---
 kernel/kernel.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'kernel/kernel.c')

diff --git a/kernel/kernel.c b/kernel/kernel.c
index 59ad130..77970c3 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -31,6 +31,27 @@
 
 #include "task.h"
 
+#include <stdint.h>
+#include <stdlib.h>
+
+
+// CODE FOR Stack Smashing Protector, TODO: MOVE / and do not duplicate
+// with sys.c
+// http://wiki.osdev.org/Stack_Smashing_Protector
+ 
+#if UINT32_MAX == UINTPTR_MAX
+#define STACK_CHK_GUARD 0xe2dee396
+#else
+#define STACK_CHK_GUARD 0x595e9fbd94fda766
+#endif
+ 
+uintptr_t __stack_chk_guard = STACK_CHK_GUARD;
+ 
+__attribute__((noreturn))
+void __stack_chk_fail(void)
+{
+	panic(FOOLOS_MODULE_NAME,"Stack smashing detected");
+}
 
 // mp informs us if this if this is the main processor
 void kernel_main(uint32_t initial_stack, int mp)
-- 
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