diff options
Diffstat (limited to 'include/uapi/linux/types.h')
-rw-r--r-- | include/uapi/linux/types.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/uapi/linux/types.h b/include/uapi/linux/types.h new file mode 100644 index 000000000000..acf0979b790a --- /dev/null +++ b/include/uapi/linux/types.h @@ -0,0 +1,56 @@ +#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 +#ifdef __CHECK_ENDIAN__ +#define __bitwise __bitwise__ +#else +#define __bitwise +#endif + +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 */ |