linux-imx

// SPDX-License-Identifier: GPL-2.0

#include <linux/uaccess.h>

​

/* out-of-line parts */

​

#ifndef INLINE_COPY_FROM_USER

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

{

    unsigned long res = n;

    might_fault();

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

        kasan_check_write(to, n);

        res = raw_copy_from_user(to, from, n);

    }

    if (unlikely(res))

        memset(to + (n - res), 0, res);

    return res;

}

EXPORT_SYMBOL(_copy_from_user);

#endif

​

#ifndef INLINE_COPY_TO_USER

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

{

    might_fault();

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

        kasan_check_read(from, n);

        n = raw_copy_to_user(to, from, n);

    }

    return n;

}

EXPORT_SYMBOL(_copy_to_user);

#endif