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/*-
* Copyright (c) 2011 Google, Inc.
* 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, 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stand.h>
#include "libuserboot.h"
ssize_t
userboot_copyin(const void *src, vm_offset_t va, size_t len)
{
CALLBACK(copyin, src, va, len);
return (len);
}
ssize_t
userboot_copyout(vm_offset_t va, void *dst, size_t len)
{
CALLBACK(copyout, va, dst, len);
return (len);
}
ssize_t
userboot_readin(int fd, vm_offset_t va, size_t len)
{
ssize_t res, s;
size_t sz;
char buf[4096];
res = 0;
while (len > 0) {
sz = len;
if (sz > sizeof(buf))
sz = sizeof(buf);
s = read(fd, buf, sz);
if (s == 0)
break;
if (s < 0)
return (s);
CALLBACK(copyin, buf, va, s);
len -= s;
res += s;
va += s;
}
return (res);
}
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