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 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 /* sparse defines __CHECKER__; see Documentation/dev-tools/sparse.rst */ 23 #ifdef __CHECKER__ 24 #define __bitwise __attribute__((bitwise)) 25 #else 26 #define __bitwise 27 #endif 28 29 /* The kernel doesn't use this legacy form, but user space does */ 30 #define __bitwise__ __bitwise 31 32 typedef __u16 __bitwise __le16; 33 typedef __u16 __bitwise __be16; 34 typedef __u32 __bitwise __le32; 35 typedef __u32 __bitwise __be32; 36 typedef __u64 __bitwise __le64; 37 typedef __u64 __bitwise __be64; 38 39 typedef __u16 __bitwise __sum16; 40 typedef __u32 __bitwise __wsum; 41 42 /* 43 * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid 44 * common 32/64-bit compat problems. 45 * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other 46 * architectures) and to 8-byte boundaries on 64-bit architectures. The new 47 * aligned_64 type enforces 8-byte alignment so that structs containing 48 * aligned_64 values have the same alignment on 32-bit and 64-bit architectures. 49 * No conversions are necessary between 32-bit user-space and a 64-bit kernel. 50 */ 51 #define __aligned_u64 __u64 __attribute__((aligned(8))) 52 #define __aligned_be64 __be64 __attribute__((aligned(8))) 53 #define __aligned_le64 __le64 __attribute__((aligned(8))) 54 55 typedef unsigned __bitwise __poll_t; 56 57 #endif /* __ASSEMBLY__ */ 58 #endif /* _UAPI_LINUX_TYPES_H */ 59