From ce98400f8a9ebd4e62e76b9e292b7598d0d66cc0 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Fri, 2 Apr 2021 23:26:28 +0200
Subject: Added kernel section clear/protect after init

This is a huge security improvement as it prevents potential exploits
of using or modifying internal kernel functions or data.
---
 libs/libc/inc/def.h | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

(limited to 'libs/libc/inc/def.h')

diff --git a/libs/libc/inc/def.h b/libs/libc/inc/def.h
index 583a351..f1201b9 100644
--- a/libs/libc/inc/def.h
+++ b/libs/libc/inc/def.h
@@ -23,7 +23,7 @@ typedef unsigned long long u64;
  * Macros
  */
 
-#define UNUSED(__a) ((void)(__a))
+#define UNUSED(a) ((void)(a))
 
 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
@@ -32,6 +32,7 @@ typedef unsigned long long u64;
 
 #define ATTR __attribute__
 #define NORETURN ATTR((noreturn))
+#define NOINLINE ATTR((noinline))
 #define DEPRECATED ATTR((deprecated))
 #define NONNULL ATTR((nonnull))
 #define PURE ATTR((pure))
@@ -44,7 +45,11 @@ typedef unsigned long long u64;
 #define UNUSED_FUNC ATTR((unused))
 #define NO_SANITIZE ATTR((no_sanitize("undefined")))
 #define ALIGNED(align) ATTR((aligned(align)))
-#define SECTION(section) ATTR((section(section)))
+
+#ifdef KERNEL
+#define CLEAR NOINLINE ATTR((section(".temp_clear")))
+#define PROTECTED ATTR((section(".temp_protect")))
+#endif
 
 #define EOF (-1)
 #define NULL ((void *)0)
-- 
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