uaccess.h File Reference

#include <stddef.h>
#include <stdint.h>

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Macros
#define	__user
#define	put_user(x, ptr)
#define	get_user(x, ptr)

Functions
unsigned long	copy_to_user (void __user *to, const void *from, unsigned long n)
unsigned long	copy_from_user (void *to, const void __user *from, unsigned long n)
unsigned long	clear_user (void __user *to, unsigned long n)
long	copy_from_kernel_nofault (void *dst, const void *src, unsigned long size)

Macro Definition Documentation

__user

#define __user

get_user

#define get_user	(		x,
			ptr
	)

Value:

    ({                              \
        (x) = *(ptr);                       \
        0;                          \
    })

put_user

#define put_user	(		x,
			ptr
	)

Value:

    ({                              \
        *(ptr) = (x);                       \
        0;                          \
    })

Function Documentation

clear_user()

unsigned long clear_user	(	void __user *	to,
		unsigned long	n
	)

copy_from_kernel_nofault()

long copy_from_kernel_nofault	(	void *	dst,
		const void *	src,
		unsigned long	size
	)

copy_from_user()

unsigned long copy_from_user	(	void *	to,
		const void __user *	from,
		unsigned long	n
	)

copy_to_user()

unsigned long copy_to_user	(	void __user *	to,
		const void *	from,
		unsigned long	n
	)