diff options
| author | Zheng Da <zhengda1936@gmail.com> | 2009-12-06 05:26:23 +0100 |
|---|---|---|
| committer | Zheng Da <zhengda1936@gmail.com> | 2009-12-06 05:26:23 +0100 |
| commit | 8a6d48c0542876eb3acfc0970c0ab7872db08d5f (patch) | |
| tree | 496e78bc728317ea779781b92f897d16936ee231 /libdde_linux26/contrib/include/asm-generic/uaccess.h | |
| parent | b4bffcfcdf3ab7a55d664e9aa5907f88da503f38 (diff) | |
check in the original version of dde linux26.
Diffstat (limited to 'libdde_linux26/contrib/include/asm-generic/uaccess.h')
| -rw-r--r-- | libdde_linux26/contrib/include/asm-generic/uaccess.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/libdde_linux26/contrib/include/asm-generic/uaccess.h b/libdde_linux26/contrib/include/asm-generic/uaccess.h new file mode 100644 index 00000000..549cb3a1 --- /dev/null +++ b/libdde_linux26/contrib/include/asm-generic/uaccess.h @@ -0,0 +1,26 @@ +#ifndef _ASM_GENERIC_UACCESS_H_ +#define _ASM_GENERIC_UACCESS_H_ + +/* + * This macro should be used instead of __get_user() when accessing + * values at locations that are not known to be aligned. + */ +#define __get_user_unaligned(x, ptr) \ +({ \ + __typeof__ (*(ptr)) __x; \ + __copy_from_user(&__x, (ptr), sizeof(*(ptr))) ? -EFAULT : 0; \ + (x) = __x; \ +}) + + +/* + * This macro should be used instead of __put_user() when accessing + * values at locations that are not known to be aligned. + */ +#define __put_user_unaligned(x, ptr) \ +({ \ + __typeof__ (*(ptr)) __x = (x); \ + __copy_to_user((ptr), &__x, sizeof(*(ptr))) ? -EFAULT : 0; \ +}) + +#endif /* _ASM_GENERIC_UACCESS_H */ |
