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Tip revision: 030bbdbf4c833bc69f502eae58498bc5572db736 authored by Linus Torvalds on 10 May 2015, 22:12:29 UTC
Linux 4.1-rc3
Tip revision: 030bbdb
uaccess-unaligned.h
#ifndef __ASM_GENERIC_UACCESS_UNALIGNED_H
#define __ASM_GENERIC_UACCESS_UNALIGNED_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_UNALIGNED_H */
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