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_be64 __be64 __attribute__((aligned(8))) 57#define __aligned_le64 __le64 __attribute__((aligned(8))) 58 59typedef unsigned __bitwise __poll_t; 60 61#endif /* __ASSEMBLY__ */ 62#endif /* _UAPI_LINUX_TYPES_H */ 63