1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _LINUX_TYPES_H
3#define _LINUX_TYPES_H
4
5#include <asm/types.h>
6
7#ifndef __ASSEMBLY__
8
9#include <linux/posix_types.h>
10
11
12/*
13 * Below are truly Linux-specific types that should never collide with
14 * any application/library that wants linux/types.h.
15 */
16
17#ifdef __CHECKER__
18#define __bitwise__ __attribute__((bitwise))
19#else
20#define __bitwise__
21#endif
22#define __bitwise __bitwise__
23
24typedef __u16 __bitwise __le16;
25typedef __u16 __bitwise __be16;
26typedef __u32 __bitwise __le32;
27typedef __u32 __bitwise __be32;
28typedef __u64 __bitwise __le64;
29typedef __u64 __bitwise __be64;
30
31typedef __u16 __bitwise __sum16;
32typedef __u32 __bitwise __wsum;
33
34/*
35 * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid
36 * common 32/64-bit compat problems.
37 * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other
38 * architectures) and to 8-byte boundaries on 64-bit architectures. The new
39 * aligned_64 type enforces 8-byte alignment so that structs containing
40 * aligned_64 values have the same alignment on 32-bit and 64-bit architectures.
41 * No conversions are necessary between 32-bit user-space and a 64-bit kernel.
42 */
43#define __aligned_u64 __u64 __attribute__((aligned(8)))
44#define __aligned_be64 __be64 __attribute__((aligned(8)))
45#define __aligned_le64 __le64 __attribute__((aligned(8)))
46
47typedef unsigned __bitwise __poll_t;
48
49#endif /* __ASSEMBLY__ */
50#endif /* _LINUX_TYPES_H */
51

source code of include/linux/types.h