kernel/generic/include/syscall/copy.h

   1 /*
   2  * Copyright (c) 2006 Jakub Jermar
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * - The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /** @addtogroup generic
  30  * @{
  31  */
  32 /** @file
  33  */
  34
  35 #ifndef KERN_COPY_H_
  36 #define KERN_COPY_H_
  37
  38 #include <stddef.h>
  39
  40 /** Label within memcpy_from_uspace() that contains return -1. */
  41 extern char memcpy_from_uspace_failover_address;
  42
  43 /** Label within memcpy_to_uspace() that contains return -1. */
  44 extern char memcpy_to_uspace_failover_address;
  45
  46 extern errno_t copy_from_uspace(void *dst, const void *uspace_src, size_t size);
  47 extern errno_t copy_to_uspace(void *dst_uspace, const void *src, size_t size);
  48
  49 /*
  50  * This interface must be implemented by each architecture.
  51  */
  52 extern errno_t memcpy_from_uspace(void *dst, const void *uspace_src, size_t size);
  53 extern errno_t memcpy_to_uspace(void *uspace_dst, const void *src, size_t size);
  54
  55 #endif
  56
  57 /** @}
  58  */