/*- * Copyright (c) 2015 The FreeBSD Foundation * All rights reserved. * * This software was developed by Konstantin Belousov <kib@FreeBSD.org> * under sponsorship from the FreeBSD Foundation. * * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 <sys/param.h> #include <errno.h> #include <limits.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <atf-c.h> #include <vm/vm.h> #include <vm/pmap.h> #include <machine/vmparam.h> static int scratch_file; static int copyin_checker(uintptr_t uaddr, size_t len) { ssize_t ret; ret = write(scratch_file, (const void *)uaddr, len); return (ret == -1 ? errno : 0); } #define FMAX ULONG_MAX ATF_TC_WITHOUT_HEAD(kern_copyin); ATF_TC_BODY(kern_copyin, tc) { char template[] = "copyin.XXXXXX"; scratch_file = mkstemp(template); ATF_REQUIRE(scratch_file != -1); unlink(template); ATF_CHECK(copyin_checker(0, 0) == 0); ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 9) == 0); ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 10) == 0); ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 11) == EFAULT); ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 1, 1) == 0); ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 0) == 0); ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 1) == EFAULT); ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 2) == EFAULT); ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS + 1, 0) == 0); ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS + 1, 2) == EFAULT); ATF_CHECK(copyin_checker(FMAX - 10, 9) == EFAULT); ATF_CHECK(copyin_checker(FMAX - 10, 10) == EFAULT); ATF_CHECK(copyin_checker(FMAX - 10, 11) == EFAULT); } ATF_TP_ADD_TCS(tp) { ATF_TP_ADD_TC(tp, kern_copyin); return (atf_no_error()); } |