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__ 17 typedef __signed__ __int128 __s128 __attribute__((aligned(16))); 18 typedef 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 36 typedef __u16 __bitwise __le16; 37 typedef __u16 __bitwise __be16; 38 typedef __u32 __bitwise __le32; 39 typedef __u32 __bitwise __be32; 40 typedef __u64 __bitwise __le64; 41 typedef __u64 __bitwise __be64; 42 43 typedef __u16 __bitwise __sum16; 44 typedef __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 59 typedef unsigned __bitwise __poll_t; 60 61 #endif /* __ASSEMBLY__ */ 62 #endif /* _UAPI_LINUX_TYPES_H */ 63