1/*- 2 * Copyright (c) 2011 Google, Inc. 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 * 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 OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include <stand.h> 28 29#include "libuserboot.h" 30 31ssize_t 32userboot_copyin(const void *src, vm_offset_t va, size_t len) 33{ 34 35 CALLBACK(copyin, src, va, len); 36 return (len); 37} 38 39ssize_t 40userboot_copyout(vm_offset_t va, void *dst, size_t len) 41{ 42 43 CALLBACK(copyout, va, dst, len); 44 return (len); 45} 46 47ssize_t 48userboot_readin(readin_handle_t fd, vm_offset_t va, size_t len) 49{ 50 ssize_t res, s; 51 size_t sz; 52 char buf[4096]; 53 54 res = 0; 55 while (len > 0) { 56 sz = len; 57 if (sz > sizeof(buf)) 58 sz = sizeof(buf); 59 s = VECTX_READ(fd, buf, sz); 60 if (s == 0) 61 break; 62 if (s < 0) 63 return (s); 64 CALLBACK(copyin, buf, va, s); 65 len -= s; 66 res += s; 67 va += s; 68 } 69 return (res); 70} 71