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 https://kernelnewbies.org/KernelHeaders"
11#endif /* __EXPORTED_HEADERS__ */
12#endif
13
14#include <linux/posix_types.h>
15
16#ifdef __SIZEOF_INT128__
17typedef __signed__ __int128 __s128 __attribute__((aligned(16)));
18typedef unsigned __int128 __u128 __attribute__((aligned(16)));
19#endif
20
21/*
22 * Below are truly Linux-specific types that should never collide with
23 * any application/library that wants linux/types.h.
24 */
25
26/* sparse defines __CHECKER__; see Documentation/dev-tools/sparse.rst */
27#ifdef __CHECKER__
28#define __bitwise __attribute__((bitwise))
29#else
30#define __bitwise
31#endif
32
33/* The kernel doesn't use this legacy form, but user space does */
34#define __bitwise__ __bitwise
35
36typedef __u16 __bitwise __le16;
37typedef __u16 __bitwise __be16;
38typedef __u32 __bitwise __le32;
39typedef __u32 __bitwise __be32;
40typedef __u64 __bitwise __le64;
41typedef __u64 __bitwise __be64;
42
43typedef __u16 __bitwise __sum16;
44typedef __u32 __bitwise __wsum;
45
46/*
47 * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid
48 * common 32/64-bit compat problems.
49 * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other
50 * architectures) and to 8-byte boundaries on 64-bit architectures. The new
51 * aligned_64 type enforces 8-byte alignment so that structs containing
52 * aligned_64 values have the same alignment on 32-bit and 64-bit architectures.
53 * No conversions are necessary between 32-bit user-space and a 64-bit kernel.
54 */
55#define __aligned_u64 __u64 __attribute__((aligned(8)))
56#define __aligned_s64 __s64 __attribute__((aligned(8)))
57#define __aligned_be64 __be64 __attribute__((aligned(8)))
58#define __aligned_le64 __le64 __attribute__((aligned(8)))
59
60typedef unsigned __bitwise __poll_t;
61
62#endif /* __ASSEMBLY__ */
63#endif /* _UAPI_LINUX_TYPES_H */
64