1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _UAPI_LINUX_TYPES_H
3#define _UAPI_LINUX_TYPES_H
4
5#include <asm/types.h>
6
7#ifndef __ASSEMBLY__
8#ifndef __KERNEL__
9#ifndef __EXPORTED_HEADERS__
10#warning "Attempt to use kernel headers from user space, see http://kernelnewbies.org/KernelHeaders"
11#endif /* __EXPORTED_HEADERS__ */
12#endif
13
14#include <linux/posix_types.h>
15
16
17/*
18 * Below are truly Linux-specific types that should never collide with
19 * any application/library that wants linux/types.h.
20 */
21
22#ifdef __CHECKER__
23#define __bitwise__ __attribute__((bitwise))
24#else
25#define __bitwise__
26#endif
27#define __bitwise __bitwise__
28
29typedef __u16 __bitwise __le16;
30typedef __u16 __bitwise __be16;
31typedef __u32 __bitwise __le32;
32typedef __u32 __bitwise __be32;
33typedef __u64 __bitwise __le64;
34typedef __u64 __bitwise __be64;
35
36typedef __u16 __bitwise __sum16;
37typedef __u32 __bitwise __wsum;
38
39/*
40 * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid
41 * common 32/64-bit compat problems.
42 * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other
43 * architectures) and to 8-byte boundaries on 64-bit architectures. The new
44 * aligned_64 type enforces 8-byte alignment so that structs containing
45 * aligned_64 values have the same alignment on 32-bit and 64-bit architectures.
46 * No conversions are necessary between 32-bit user-space and a 64-bit kernel.
47 */
48#define __aligned_u64 __u64 __attribute__((aligned(8)))
49#define __aligned_be64 __be64 __attribute__((aligned(8)))
50#define __aligned_le64 __le64 __attribute__((aligned(8)))
51
52typedef unsigned __bitwise __poll_t;
53
54#endif /* __ASSEMBLY__ */
55#endif /* _UAPI_LINUX_TYPES_H */
56