1289603Skib/*- 2289603Skib * Copyright (c) 2015 The FreeBSD Foundation 3289603Skib * All rights reserved. 4289603Skib * 5289603Skib * This software was developed by Konstantin Belousov <kib@FreeBSD.org> 6289603Skib * under sponsorship from the FreeBSD Foundation. 7289603Skib * 8289603Skib * Redistribution and use in source and binary forms, with or without 9289603Skib * modification, are permitted provided that the following conditions 10289603Skib * are met: 11289603Skib * 1. Redistributions of source code must retain the above copyright 12289603Skib * notice, this list of conditions and the following disclaimer. 13289603Skib * 2. Redistributions in binary form must reproduce the above copyright 14289603Skib * notice, this list of conditions and the following disclaimer in the 15289603Skib * documentation and/or other materials provided with the distribution. 16289603Skib * 17289603Skib * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18289603Skib * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19289603Skib * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20289603Skib * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21289603Skib * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22289603Skib * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23289603Skib * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24289603Skib * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25289603Skib * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26289603Skib * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27289603Skib * SUCH DAMAGE. 28289603Skib */ 29289603Skib 30289603Skib#include <sys/cdefs.h> 31289603Skib__FBSDID("$FreeBSD$"); 32289603Skib 33289603Skib#include <sys/param.h> 34289603Skib#include <errno.h> 35289603Skib#include <limits.h> 36289603Skib#include <stdio.h> 37289603Skib#include <stdlib.h> 38289603Skib#include <unistd.h> 39289603Skib#include <atf-c.h> 40289603Skib#include <vm/vm.h> 41289603Skib#include <vm/pmap.h> 42289603Skib#include <machine/vmparam.h> 43289603Skib 44289603Skibstatic int scratch_file; 45289603Skib 46289603Skibstatic int 47289603Skibcopyin_checker(uintptr_t uaddr, size_t len) 48289603Skib{ 49289603Skib ssize_t ret; 50289603Skib 51289603Skib ret = write(scratch_file, (const void *)uaddr, len); 52289603Skib return (ret == -1 ? errno : 0); 53289603Skib} 54289603Skib 55289603Skib#define FMAX ULONG_MAX 56289603Skib 57289603SkibATF_TC_WITHOUT_HEAD(kern_copyin); 58289603SkibATF_TC_BODY(kern_copyin, tc) 59289603Skib{ 60289603Skib char template[] = "copyin.XXXXXX"; 61289603Skib 62289603Skib scratch_file = mkstemp(template); 63289603Skib ATF_REQUIRE(scratch_file != -1); 64289603Skib unlink(template); 65289603Skib 66289603Skib ATF_CHECK(copyin_checker(0, 0) == 0); 67289603Skib ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 9) == 0); 68289603Skib ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 10) == 0); 69289603Skib ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 11) == EFAULT); 70289603Skib ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 1, 1) == 0); 71289603Skib ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 0) == 0); 72289603Skib ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 1) == EFAULT); 73289603Skib ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 2) == EFAULT); 74289603Skib ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS + 1, 0) == 0); 75289603Skib ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS + 1, 2) == EFAULT); 76289603Skib ATF_CHECK(copyin_checker(FMAX - 10, 9) == EFAULT); 77289603Skib ATF_CHECK(copyin_checker(FMAX - 10, 10) == EFAULT); 78289603Skib ATF_CHECK(copyin_checker(FMAX - 10, 11) == EFAULT); 79289603Skib} 80289603Skib 81289603SkibATF_TP_ADD_TCS(tp) 82289603Skib{ 83289603Skib 84289603Skib ATF_TP_ADD_TC(tp, kern_copyin); 85289603Skib return (atf_no_error()); 86289603Skib} 87