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1 #ifndef _UAPI_LINUX_TYPES_H
2 #define _UAPI_LINUX_TYPES_H
3 
4 #include <asm/types.h>
5 
6 #ifndef __ASSEMBLY__
7 #ifndef	__KERNEL__
8 #ifndef __EXPORTED_HEADERS__
9 #warning "Attempt to use kernel headers from user space, see http://kernelnewbies.org/KernelHeaders"
10 #endif /* __EXPORTED_HEADERS__ */
11 #endif
12 
13 #include <linux/posix_types.h>
14 
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 #ifdef __CHECKER__
22 #define __bitwise__ __attribute__((bitwise))
23 #else
24 #define __bitwise__
25 #endif
26 #ifdef __CHECK_ENDIAN__
27 #define __bitwise __bitwise__
28 #else
29 #define __bitwise
30 #endif
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 #endif /*  __ASSEMBLY__ */
56 #endif /* _UAPI_LINUX_TYPES_H */
57