2 * Copyright (c) 2015 The FreeBSD Foundation
5 * This software was developed by Konstantin Belousov <kib@FreeBSD.org>
6 * under sponsorship from the FreeBSD Foundation.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
33 #include <sys/param.h>
42 #include <machine/vmparam.h>
44 static int scratch_file;
47 copyin_checker(uintptr_t uaddr, size_t len)
51 ret = write(scratch_file, (const void *)uaddr, len);
52 return (ret == -1 ? errno : 0);
55 #define FMAX ULONG_MAX
57 ATF_TC_WITHOUT_HEAD(kern_copyin);
58 ATF_TC_BODY(kern_copyin, tc)
60 char template[] = "copyin.XXXXXX";
62 scratch_file = mkstemp(template);
63 ATF_REQUIRE(scratch_file != -1);
66 ATF_CHECK(copyin_checker(0, 0) == 0);
67 ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 9) == 0);
68 ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 10) == 0);
69 ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 11) == EFAULT);
70 ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 1, 1) == 0);
71 ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 0) == 0);
72 ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 1) == EFAULT);
73 ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 2) == EFAULT);
74 ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS + 1, 0) == 0);
75 ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS + 1, 2) == EFAULT);
76 ATF_CHECK(copyin_checker(FMAX - 10, 9) == EFAULT);
77 ATF_CHECK(copyin_checker(FMAX - 10, 10) == EFAULT);
78 ATF_CHECK(copyin_checker(FMAX - 10, 11) == EFAULT);
84 ATF_TP_ADD_TC(tp, kern_copyin);
85 return (atf_no_error());