diff options
Diffstat (limited to 'sys/compat/linuxkpi/common/include/linux/uaccess.h')
-rw-r--r-- | sys/compat/linuxkpi/common/include/linux/uaccess.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/uaccess.h b/sys/compat/linuxkpi/common/include/linux/uaccess.h new file mode 100644 index 0000000..87d1bab --- /dev/null +++ b/sys/compat/linuxkpi/common/include/linux/uaccess.h @@ -0,0 +1,57 @@ +/*- + * Copyright (c) 2010 Isilon Systems, Inc. + * Copyright (c) 2010 iX Systems, Inc. + * Copyright (c) 2010 Panasas, Inc. + * Copyright (c) 2013-2015 Mellanox Technologies, Ltd. + * Copyright (c) 2015 François Tigeot + * 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 _LINUX_UACCESS_H_ +#define _LINUX_UACCESS_H_ + +#include <linux/compiler.h> + +#define get_user(_x, _p) -copyin((_p), &(_x), sizeof(*(_p))) +#define put_user(_x, _p) -copyout(&(_x), (_p), sizeof(*(_p))) + +/* + * NOTE: The returned value from pagefault_disable() must be stored + * and passed to pagefault_enable(). Else possible recursion on the + * state can be lost. + */ +static inline int __must_check +pagefault_disable(void) +{ + return (vm_fault_disable_pagefaults()); +} + +static inline void +pagefault_enable(int save) +{ + vm_fault_enable_pagefaults(save); +} + +#endif /* _LINUX_UACCESS_H_ */ |