[mirror_ubuntu-focal-kernel.git] / include / uapi / linux / types.h

/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI_LINUX_TYPES_H
#define _UAPI_LINUX_TYPES_H

#include <asm/types.h>

#ifndef __ASSEMBLY__
#ifndef	__KERNEL__
#ifndef __EXPORTED_HEADERS__
#warning "Attempt to use kernel headers from user space, see http://kernelnewbies.org/KernelHeaders"
#endif /* __EXPORTED_HEADERS__ */
#endif

#include <linux/posix_types.h>


/*
 * Below are truly Linux-specific types that should never collide with
 * any application/library that wants linux/types.h.
 */

#ifdef __CHECKER__
#define __bitwise__ __attribute__((bitwise))
#else
#define __bitwise__
#endif
#define __bitwise __bitwise__

typedef __u16 __bitwise __le16;
typedef __u16 __bitwise __be16;
typedef __u32 __bitwise __le32;
typedef __u32 __bitwise __be32;
typedef __u64 __bitwise __le64;
typedef __u64 __bitwise __be64;

typedef __u16 __bitwise __sum16;
typedef __u32 __bitwise __wsum;

/*
 * aligned_u64 should be used in defining kernel<->userspace ABIs to avoid
 * common 32/64-bit compat problems.
 * 64-bit values align to 4-byte boundaries on x86_32 (and possibly other
 * architectures) and to 8-byte boundaries on 64-bit architectures.  The new
 * aligned_64 type enforces 8-byte alignment so that structs containing
 * aligned_64 values have the same alignment on 32-bit and 64-bit architectures.
 * No conversions are necessary between 32-bit user-space and a 64-bit kernel.
 */
#define __aligned_u64 __u64 __attribute__((aligned(8)))
#define __aligned_be64 __be64 __attribute__((aligned(8)))
#define __aligned_le64 __le64 __attribute__((aligned(8)))

#endif /*  __ASSEMBLY__ */
#endif /* _UAPI_LINUX_TYPES_H */
Commit	Line	Data
6f52b16c	1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
607ca46e DH	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 http://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	#ifdef __CHECKER__
	23	#define __bitwise__ __attribute__((bitwise))
	24	#else
	25	#define __bitwise__
	26	#endif
607ca46e	27	#define __bitwise __bitwise__
607ca46e DH	28
	29	typedef __u16 __bitwise __le16;
	30	typedef __u16 __bitwise __be16;
	31	typedef __u32 __bitwise __le32;
	32	typedef __u32 __bitwise __be32;
	33	typedef __u64 __bitwise __le64;
	34	typedef __u64 __bitwise __be64;
	35
	36	typedef __u16 __bitwise __sum16;
	37	typedef __u32 __bitwise __wsum;
	38
	39	/*
	40	* aligned_u64 should be used in defining kernel<->userspace ABIs to avoid
	41	* common 32/64-bit compat problems.
	42	* 64-bit values align to 4-byte boundaries on x86_32 (and possibly other
	43	* architectures) and to 8-byte boundaries on 64-bit architectures. The new
	44	* aligned_64 type enforces 8-byte alignment so that structs containing
	45	* aligned_64 values have the same alignment on 32-bit and 64-bit architectures.
	46	* No conversions are necessary between 32-bit user-space and a 64-bit kernel.
	47	*/
	48	#define __aligned_u64 __u64 __attribute__((aligned(8)))
	49	#define __aligned_be64 __be64 __attribute__((aligned(8)))
	50	#define __aligned_le64 __le64 __attribute__((aligned(8)))
	51
	52	#endif /* __ASSEMBLY__ */
	53	#endif /* _UAPI_LINUX_TYPES_H */