uaccess_with_memcpy.c File Reference

#include <linux/kernel.h>
#include <linux/ctype.h>
#include <linux/uaccess.h>
#include <linux/rwsem.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/hardirq.h>
#include <linux/gfp.h>
#include <linux/highmem.h>
#include <asm/current.h>
#include <asm/page.h>

Go to the source code of this file.

Functions
unsigned long	__copy_to_user (void __user *to, const void *from, unsigned long n)
unsigned long	__clear_user (void __user *addr, unsigned long n)

Function Documentation

unsigned long __clear_user	(	void __user *	mem,
		unsigned long	len
	)

__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 158 of file uaccess_with_memcpy.c.

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

Definition at line 107 of file uaccess_with_memcpy.c.