3137d2d4ec
Check the new LINUXKPI_VERSION macro for backwards compatibility. This patch is part of D19565 Reviewed by: hps Approved by: imp (mentor), hps MFC after: 1 week
73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _ASM_UACCESS_H_
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#define _ASM_UACCESS_H_
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#include <linux/uaccess.h>
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static inline long
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copy_to_user(void *to, const void *from, unsigned long n)
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{
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if (linux_copyout(from, to, n) != 0)
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return n;
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return 0;
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}
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#define __copy_to_user(...) copy_to_user(__VA_ARGS__)
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static inline long
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copy_from_user(void *to, const void *from, unsigned long n)
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{
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if (linux_copyin(from, to, n) != 0)
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return n;
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return 0;
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}
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#define __copy_from_user(...) copy_from_user(__VA_ARGS__)
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#define __copy_in_user(...) copy_from_user(__VA_ARGS__)
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#if defined(LINUXKPI_VERSION) && LINUXKPI_VERSION >= 50000
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#define user_access_begin(ptr, len) access_ok(ptr, len)
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#else
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#define user_access_begin() do { } while (0)
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#endif
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#define user_access_end() do { } while (0)
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#define unsafe_get_user(x, ptr, err) do { \
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if (unlikely(__get_user(x, ptr))) \
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goto err; \
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} while (0)
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#define unsafe_put_user(x, ptr, err) do { \
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if (unlikely(__put_user(x, ptr))) \
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goto err; \
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} while (0)
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#endif /* _ASM_UACCESS_H_ */
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