/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice unmodified, this list of conditions, and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _ASM_UACCESS_H_
#define _ASM_UACCESS_H_
#include <linux/uaccess.h>
static inline long
copy_to_user(void *to, const void *from, unsigned long n)
{
if (linux_copyout(from, to, n) != 0)
return n;
return 0;
}
#define __copy_to_user(...) copy_to_user(__VA_ARGS__)
static inline long
copy_from_user(void *to, const void *from, unsigned long n)
{
if (linux_copyin(from, to, n) != 0)
return n;
return 0;
}
#define __copy_from_user(...) copy_from_user(__VA_ARGS__)
#define __copy_in_user(...) copy_from_user(__VA_ARGS__)
#if defined(LINUXKPI_VERSION) && LINUXKPI_VERSION >= 50000
#define user_access_begin(ptr, len) access_ok(ptr, len)
#else
#define user_access_begin() do { } while (0)
#endif
#define user_access_end() do { } while (0)
#define unsafe_get_user(x, ptr, err) do { \
if (unlikely(__get_user(x, ptr))) \
goto err; \
} while (0)
#define unsafe_put_user(x, ptr, err) do { \
if (unlikely(__put_user(x, ptr))) \
goto err; \
} while (0)
#endif /* _ASM_UACCESS_H_ */
