1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 #ifndef _UAPI_LINUX_STDDEF_H << 3 #define _UAPI_LINUX_STDDEF_H << 4 << 5 #include <linux/compiler_types.h> 2 #include <linux/compiler_types.h> 6 3 7 #ifndef __always_inline 4 #ifndef __always_inline 8 #define __always_inline inline 5 #define __always_inline inline 9 #endif 6 #endif 10 << 11 /** << 12 * __struct_group() - Create a mirrored named << 13 * << 14 * @TAG: The tag name for the named sub-struct << 15 * @NAME: The identifier name of the mirrored << 16 * @ATTRS: Any struct attributes (usually empt << 17 * @MEMBERS: The member declarations for the m << 18 * << 19 * Used to create an anonymous union of two st << 20 * and size: one anonymous and one named. The << 21 * normally without sub-struct naming, and the << 22 * reason about the start, end, and size of th << 23 * The named struct can also be explicitly tag << 24 * as both having struct attributes appended. << 25 */ << 26 #define __struct_group(TAG, NAME, ATTRS, MEMBE << 27 union { \ << 28 struct { MEMBERS } ATTRS; \ << 29 struct TAG { MEMBERS } ATTRS N << 30 } ATTRS << 31 << 32 #ifdef __cplusplus << 33 /* sizeof(struct{}) is 1 in C++, not 0, can't << 34 #define __DECLARE_FLEX_ARRAY(T, member) \ << 35 T member[0] << 36 #else << 37 /** << 38 * __DECLARE_FLEX_ARRAY() - Declare a flexible << 39 * << 40 * @TYPE: The type of each flexible array elem << 41 * @NAME: The name of the flexible array membe << 42 * << 43 * In order to have a flexible array member in << 44 * struct, it needs to be wrapped in an anonym << 45 * named member, but that member can be empty. << 46 */ << 47 #define __DECLARE_FLEX_ARRAY(TYPE, NAME) << 48 struct { \ << 49 struct { } __empty_ ## NAME; \ << 50 TYPE NAME[]; \ << 51 } << 52 #endif << 53 << 54 #ifndef __counted_by << 55 #define __counted_by(m) << 56 #endif << 57 << 58 #ifndef __counted_by_le << 59 #define __counted_by_le(m) << 60 #endif << 61 << 62 #ifndef __counted_by_be << 63 #define __counted_by_be(m) << 64 #endif << 65 << 66 #endif /* _UAPI_LINUX_STDDEF_H */ << 67 7
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