cregit-Linux how code gets into the kernel

Release 4.12 include/uapi/linux/types.h



#include <asm/types.h>

#ifndef __ASSEMBLY__
#ifndef	__KERNEL__
#warning "Attempt to use kernel headers from user space, see"
#endif /* __EXPORTED_HEADERS__ */

#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))

#define __bitwise__

#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 */

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David Howells107100.00%1100.00%
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