mirror of
https://github.com/freebsd/freebsd-src
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97 lines
3.2 KiB
C
97 lines
3.2 KiB
C
/*-
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* Copyright (c) 2015 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Konstantin Belousov <kib@FreeBSD.org>
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <atf-c.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#include <machine/vmparam.h>
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static int scratch_file;
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static int
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copyin_checker(uintptr_t uaddr, size_t len)
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{
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ssize_t ret;
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ret = write(scratch_file, (const void *)uaddr, len);
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return (ret == -1 ? errno : 0);
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}
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#define FMAX ULONG_MAX
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ATF_TC_WITHOUT_HEAD(kern_copyin);
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ATF_TC_BODY(kern_copyin, tc)
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{
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char template[] = "copyin.XXXXXX";
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#ifdef __mips__
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/*
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* MIPS has different VM layout: the UVA map on mips ends the
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* highest mapped entry at the VM_MAXUSER_ADDRESS - PAGE_SIZE,
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* while all other arches map either stack or shared page up
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* to the VM_MAXUSER_ADDRESS.
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*/
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atf_tc_skip("Platform is not supported.");
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#endif
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scratch_file = mkstemp(template);
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ATF_REQUIRE(scratch_file != -1);
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unlink(template);
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ATF_CHECK(copyin_checker(0, 0) == 0);
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ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 9) == 0);
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ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 10) == 0);
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ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 11) == EFAULT);
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ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 1, 1) == 0);
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ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 0) == 0);
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ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 1) == EFAULT);
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ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 2) == EFAULT);
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ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS + 1, 0) == 0);
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ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS + 1, 2) == EFAULT);
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ATF_CHECK(copyin_checker(FMAX - 10, 9) == EFAULT);
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ATF_CHECK(copyin_checker(FMAX - 10, 10) == EFAULT);
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ATF_CHECK(copyin_checker(FMAX - 10, 11) == EFAULT);
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}
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ATF_TP_ADD_TCS(tp)
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{
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ATF_TP_ADD_TC(tp, kern_copyin);
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return (atf_no_error());
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}
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