From 6d305cbef1aa01b9714e01e35f3d5c28544cf04d Mon Sep 17 00:00:00 2001 From: Erick Archer Date: Tue, 7 May 2024 19:33:18 +0200 Subject: [PATCH] uapi: stddef.h: Provide UAPI macros for __counted_by_{le, be} This commit can be considered an addition to commit ca7e324e8ad3 ("compiler_types: add Endianness-dependent __counted_by_{le,be}") [1]. In the commit referenced above the __counted_by_{le,be}() attributes were defined based on platform's endianness with the goal to that the structures contain flexible arrays at the end, and the counter for, can be annotated with these attributes. So, this commit only provide UAPI macros for UAPI structs that will gain annotations for __counted_by_{le, be} attributes. And it is the previous step to be able to use these attributes in UAPI. Link: https://lore.kernel.org/r/20240327142241.1745989-2-aleksander.lobakin@intel.com Suggested-by: Sven Eckelmann Signed-off-by: Erick Archer Link: https://lore.kernel.org/r/AS8PR02MB72372E45071E8821C07236F78BE42@AS8PR02MB7237.eurprd02.prod.outlook.com Fixes: ca7e324e8ad3 ("compiler_types: add Endianness-dependent __counted_by_{le,be}") Signed-off-by: Kees Cook --- include/uapi/linux/stddef.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/include/uapi/linux/stddef.h b/include/uapi/linux/stddef.h index 2ec6f35cda32..58154117d9b0 100644 --- a/include/uapi/linux/stddef.h +++ b/include/uapi/linux/stddef.h @@ -55,4 +55,12 @@ #define __counted_by(m) #endif +#ifndef __counted_by_le +#define __counted_by_le(m) +#endif + +#ifndef __counted_by_be +#define __counted_by_be(m) +#endif + #endif /* _UAPI_LINUX_STDDEF_H */