sys/rump/librump/rumpkern/rumpcopy.c

   1 /*      $NetBSD: rumpcopy.c,v 1.1 2009/11/04 17:01:45 pooka Exp $       */
   2
   3 /*
   4  * Copyright (c) 2009 Antti Kantee.  All Rights Reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. 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  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <sys/cdefs.h>
  29 __KERNEL_RCSID(0, "$NetBSD: rumpcopy.c,v 1.1 2009/11/04 17:01:45 pooka Exp $");
  30
  31 #include <sys/param.h>
  32 #include <sys/lwp.h>
  33 #include <sys/systm.h>
  34
  35 #include <rump/rump.h>
  36
  37 #include "rump_private.h"
  38
  39 int
  40 copyin(const void *uaddr, void *kaddr, size_t len)
  41 {
  42
  43         if (curproc->p_vmspace == &rump_vmspace)
  44                 memcpy(kaddr, uaddr, len);
  45         else
  46                 rump_sysproxy_copyin(uaddr, kaddr, len);
  47         return 0;
  48 }
  49
  50 int
  51 copyout(const void *kaddr, void *uaddr, size_t len)
  52 {
  53
  54         if (curproc->p_vmspace == &rump_vmspace)
  55                 memcpy(uaddr, kaddr, len);
  56         else
  57                 rump_sysproxy_copyout(kaddr, uaddr, len);
  58         return 0;
  59 }
  60
  61 int
  62 subyte(void *uaddr, int byte)
  63 {
  64
  65         if (curproc->p_vmspace == &rump_vmspace)
  66                 *(char *)uaddr = byte;
  67         else
  68                 rump_sysproxy_copyout(&byte, uaddr, 1);
  69         return 0;
  70 }
  71
  72 int
  73 copystr(const void *kfaddr, void *kdaddr, size_t len, size_t *done)
  74 {
  75
  76         return copyinstr(kfaddr, kdaddr, len, done);
  77 }
  78
  79 int
  80 copyinstr(const void *uaddr, void *kaddr, size_t len, size_t *done)
  81 {
  82
  83         if (curproc->p_vmspace == &rump_vmspace)
  84                 strlcpy(kaddr, uaddr, len);
  85         else
  86                 rump_sysproxy_copyin(uaddr, kaddr, len);
  87         if (done)
  88                 *done = strlen(kaddr)+1; /* includes termination */
  89         return 0;
  90 }
  91
  92 int
  93 copyoutstr(const void *kaddr, void *uaddr, size_t len, size_t *done)
  94 {
  95
  96         if (curproc->p_vmspace == &rump_vmspace)
  97                 strlcpy(uaddr, kaddr, len);
  98         else
  99                 rump_sysproxy_copyout(kaddr, uaddr, len);
 100         if (done)
 101                 *done = strlen(uaddr)+1; /* includes termination */
 102         return 0;
 103 }
 104
 105 int
 106 kcopy(const void *src, void *dst, size_t len)
 107 {
 108
 109         memcpy(dst, src, len);
 110         return 0;
 111 }