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diff --git a/kitten/include/lwk/stddef.h b/kitten/include/lwk/stddef.h
new file mode 100644
index 0000000..66551f3
--- /dev/null
+++ b/kitten/include/lwk/stddef.h
@@ -0,0 +1,25 @@
+#ifndef _LWK_STDDEF_H
+#define _LWK_STDDEF_H
+
+#include <lwk/compiler.h>
+
+#undef NULL
+#if defined(__cplusplus)
+#define NULL 0
+#else
+#define NULL ((void *)0)
+#endif
+
+#ifdef __KERNEL__
+#define false 0
+#define true  1
+#endif
+
+#undef offsetof
+#ifdef __compiler_offsetof
+#define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
+#else
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#endif
+
+#endif