Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 * Functions which are too large to be inlined.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version

 * 2 of the License, or (at your option) any later version.

 */

#include <linux/module.h>

#include <asm/uaccess.h>

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

{

        if (likely(access_ok(VERIFY_READ, from, n)))

                n = __copy_from_user(to, from, n);

        else

                memset(to, 0, n);

        return n;

}

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

{

        if (likely(access_ok(VERIFY_WRITE, to, n)))

                n = __copy_to_user(to, from, n);

        return n;

}

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

                           unsigned long n)

{

        might_sleep();

        if (likely(access_ok(VERIFY_READ, from, n) &&

            access_ok(VERIFY_WRITE, to, n)))

                n =__copy_tofrom_user(to, from, n);

        return n;

}

EXPORT_SYMBOL(copy_from_user);

EXPORT_SYMBOL(copy_to_user);

EXPORT_SYMBOL(copy_in_user);