2.6.30/0005-linux-stddef.h-export-offsetof-to-userspace.patch


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From 20ea8936f6a69726e8e95f2d145e8004b5cf4751 Mon Sep 17 00:00:00 2001
From: Mike Frysinger <vapier@gentoo.org>
Date: Fri, 2 Jan 2009 02:34:03 -0500
Subject: [PATCH 5/9] linux/stddef.h: export offsetof() to userspace

Some userspace headers (like fuse.h) utilize the offsetof() macro.  Some
userspace packages (like lkcd) expect linux/stddef.h to provide this as
well.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
 include/linux/stddef.h |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/include/linux/stddef.h b/include/linux/stddef.h
index 6a40c76..37139a7 100644
--- a/include/linux/stddef.h
+++ b/include/linux/stddef.h
@@ -20,9 +20,11 @@ enum {
 #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 /* __KERNEL__ */
 
+#ifndef offsetof
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#endif
+
 #endif
-- 
1.6.3.3