From: Tadeusz Struk <tadeusz.struk@linaro.org>
Date: Tue, 29 Mar 2022 10:12:52 -0700
Subject: uapi/linux/stddef.h: Add include guards
Patch-mainline: v5.18-rc3
Git-commit: 55037ed7bdc62151a726f5685f88afa6a82959b1
References: jsc#SLE-18978
Add include guard wrapper define to uapi/linux/stddef.h to prevent macro
redefinition errors when stddef.h is included more than once. This was not
needed before since the only contents already used a redefinition test.
Signed-off-by: Tadeusz Struk <tadeusz.struk@linaro.org>
Link: https://lore.kernel.org/r/20220329171252.57279-1-tadeusz.struk@linaro.org
Fixes: 50d7bd38c3aa ("stddef: Introduce struct_group() helper macro")
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
include/uapi/linux/stddef.h | 4 ++++
1 file changed, 4 insertions(+)
--- a/include/uapi/linux/stddef.h
+++ b/include/uapi/linux/stddef.h
@@ -1,4 +1,7 @@
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _UAPI_LINUX_STDDEF_H
+#define _UAPI_LINUX_STDDEF_H
+
#include <linux/compiler_types.h>
#ifndef __always_inline
@@ -41,3 +44,4 @@
struct { } __empty_ ## NAME; \
TYPE NAME[]; \
}
+#endif