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rumpcopy.c revision 1.2.4.2 
      1 /*	$NetBSD: rumpcopy.c,v 1.2.4.2 2010/03/11 15:04:38 yamt 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 1.2.4.2 2010/03/11 15:04:38 yamt 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 }
    112