2 * Copyright (c) 2010 Isilon Systems, Inc.
3 * Copyright (c) 2010 iX Systems, Inc.
4 * Copyright (c) 2010 Panasas, Inc.
5 * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice unmodified, this list of conditions, and the following
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #ifndef _ASM_UACCESS_H_
32 #define _ASM_UACCESS_H_
34 #include <linux/uaccess.h>
37 copy_to_user(void *to, const void *from, unsigned long n)
39 if (linux_copyout(from, to, n) != 0)
43 #define __copy_to_user(...) copy_to_user(__VA_ARGS__)
46 copy_from_user(void *to, const void *from, unsigned long n)
48 if (linux_copyin(from, to, n) != 0)
52 #define __copy_from_user(...) copy_from_user(__VA_ARGS__)
53 #define __copy_in_user(...) copy_from_user(__VA_ARGS__)
55 #if defined(LINUXKPI_VERSION) && LINUXKPI_VERSION >= 50000
56 #define user_access_begin(ptr, len) access_ok(ptr, len)
58 #define user_access_begin() do { } while (0)
60 #define user_access_end() do { } while (0)
62 #define unsafe_get_user(x, ptr, err) do { \
63 if (unlikely(__get_user(x, ptr))) \
67 #define unsafe_put_user(x, ptr, err) do { \
68 if (unlikely(__put_user(x, ptr))) \
72 #endif /* _ASM_UACCESS_H_ */