1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2018 Conrad Meyer <cem@FreeBSD.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 #include <sys/param.h>
30 #include <errno.h>
31 #include <limits.h>
32 #include <signal.h>
33 #include <unistd.h>
34
35 #include <atf-c.h>
36
37 ATF_TC_WITHOUT_HEAD(getentropy_count);
ATF_TC_BODY(getentropy_count,tc)38 ATF_TC_BODY(getentropy_count, tc)
39 {
40 char buf[2];
41 int ret;
42
43 /* getentropy(2) does not modify buf past the requested length */
44 buf[1] = 0x7C;
45 ret = getentropy(buf, 1);
46 ATF_REQUIRE_EQ(ret, 0);
47 ATF_REQUIRE_EQ(buf[1], 0x7C);
48 }
49
50 ATF_TC_WITHOUT_HEAD(getentropy_fault);
ATF_TC_BODY(getentropy_fault,tc)51 ATF_TC_BODY(getentropy_fault, tc)
52 {
53 int ret;
54
55 ret = getentropy(NULL, 1);
56 ATF_REQUIRE_EQ(ret, -1);
57 ATF_REQUIRE_EQ(errno, EFAULT);
58 }
59
60 ATF_TC_WITHOUT_HEAD(getentropy_sizes);
ATF_TC_BODY(getentropy_sizes,tc)61 ATF_TC_BODY(getentropy_sizes, tc)
62 {
63 char buf[512];
64
65 ATF_REQUIRE_EQ(getentropy(buf, sizeof(buf)), -1);
66 ATF_REQUIRE_EQ(errno, EINVAL);
67 ATF_REQUIRE_EQ(getentropy(buf, GETENTROPY_MAX + 1), -1);
68 ATF_REQUIRE_EQ(errno, EINVAL);
69
70 /* Smaller sizes always succeed: */
71 ATF_REQUIRE_EQ(getentropy(buf, GETENTROPY_MAX), 0);
72 ATF_REQUIRE_EQ(getentropy(buf, GETENTROPY_MAX / 2), 0);
73 ATF_REQUIRE_EQ(getentropy(buf, 0), 0);
74 }
75
ATF_TP_ADD_TCS(tp)76 ATF_TP_ADD_TCS(tp)
77 {
78
79 signal(SIGSYS, SIG_IGN);
80
81 ATF_TP_ADD_TC(tp, getentropy_count);
82 ATF_TP_ADD_TC(tp, getentropy_fault);
83 ATF_TP_ADD_TC(tp, getentropy_sizes);
84 return (atf_no_error());
85 }
86