usercopy_64.c File Reference

#include <linux/module.h>
#include <asm/uaccess.h>

Go to the source code of this file.

Functions
unsigned long	__clear_user (void __user *addr, unsigned long size)
	EXPORT_SYMBOL (__clear_user)
unsigned long	clear_user (void __user *to, unsigned long n)
	EXPORT_SYMBOL (clear_user)
unsigned long	copy_in_user (void __user *to, const void __user *from, unsigned len)
	EXPORT_SYMBOL (copy_in_user)
unsigned long	copy_user_handle_tail (char *to, char *from, unsigned len, unsigned zerorest)

Function Documentation

unsigned long __clear_user	(	void __user *	addr,
		unsigned long	size
	)

__clear_user: - Zero a block of memory in user space, with less checking. : Destination address, in user space.
: Number of bytes to zero.

Zero a block of memory in user space. Caller must check the specified block with access_ok() before calling this function.

Returns number of bytes that could not be cleared. On success, this will be zero.

Definition at line 15 of file usercopy_64.c.

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

clear_user: - Zero a block of memory in user space. : Destination address, in user space.
: Number of bytes to zero.

Zero a block of memory in user space.

Returns number of bytes that could not be cleared. On success, this will be zero.

Definition at line 49 of file usercopy_64.c.

unsigned long copy_in_user	(	void __user *	to,
		const void __user *	from,
		unsigned	len
	)

Definition at line 57 of file usercopy_64.c.

unsigned long copy_user_handle_tail	(	char *	to,
		char *	from,
		unsigned	len,
		unsigned	zerorest
	)

Definition at line 72 of file usercopy_64.c.

EXPORT_SYMBOL

(

__clear_user

)

EXPORT_SYMBOL

(

clear_user

)

EXPORT_SYMBOL

(

copy_in_user

)