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/* sparse defines __CHECKER__; see Documentation/dev-tools/sparse.rst */
18#ifdef __CHECKER__
19#define __bitwise __attribute__((bitwise))
20#else
21#define __bitwise
22#endif
23
24/* The kernel doesn't use this legacy form, but user space does */
25#define __bitwise__ __bitwise
26
27typedef __u16 __bitwise __le16;
28typedef __u16 __bitwise __be16;
29typedef __u32 __bitwise __le32;
30typedef __u32 __bitwise __be32;
31typedef __u64 __bitwise __le64;
32typedef __u64 __bitwise __be64;
33
34typedef __u16 __bitwise __sum16;
35typedef __u32 __bitwise __wsum;
36
37/*
38 * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid
39 * common 32/64-bit compat problems.
40 * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other
41 * architectures) and to 8-byte boundaries on 64-bit architectures. The new
42 * aligned_64 type enforces 8-byte alignment so that structs containing
43 * aligned_64 values have the same alignment on 32-bit and 64-bit architectures.
44 * No conversions are necessary between 32-bit user-space and a 64-bit kernel.
45 */
46#define __aligned_u64 __u64 __attribute__((aligned(8)))
47#define __aligned_be64 __be64 __attribute__((aligned(8)))
48#define __aligned_le64 __le64 __attribute__((aligned(8)))
49
50typedef unsigned __bitwise __poll_t;
51
52#endif /* __ASSEMBLY__ */
53#endif /* _LINUX_TYPES_H */
54