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