1 /* $NetBSD: t_rnd.c,v 1.13 2023/11/24 16:36:23 riastradh Exp $ */
2
3 /*
4 * Copyright (c) 2009 The NetBSD Foundation, Inc.
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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <sys/cdefs.h>
30 __RCSID("$NetBSD: t_rnd.c,v 1.13 2023/11/24 16:36:23 riastradh Exp $");
31
32 #include <sys/types.h>
33 #include <sys/fcntl.h>
34 #include <sys/ioctl.h>
35 #include <sys/rndio.h>
36
37 #include <atf-c.h>
38 #include <unistd.h>
39
40 #include <rump/rump.h>
41 #include <rump/rump_syscalls.h>
42
43 #include "h_macros.h"
44
45 ATF_TC(RNDADDDATA);
ATF_TC_HEAD(RNDADDDATA,tc)46 ATF_TC_HEAD(RNDADDDATA, tc)
47 {
48 atf_tc_set_md_var(tc, "descr",
49 "Checks ioctl(RNDADDDATA) (PR kern/42020)");
50 }
51
52 /* Adapted from example provided by Juho Salminen in the noted PR. */
ATF_TC_BODY(RNDADDDATA,tc)53 ATF_TC_BODY(RNDADDDATA, tc)
54 {
55 rnddata_t rd;
56 int fd;
57
58 rump_init();
59 fd = rump_sys_open("/dev/random", O_RDWR, 0);
60 if (fd == -1)
61 atf_tc_fail_errno("cannot open /dev/random");
62
63 rd.entropy = 1;
64 rd.len = 1;
65 if (rump_sys_ioctl(fd, RNDADDDATA, &rd) == -1)
66 atf_tc_fail_errno("RNDADDDATA");
67 }
68
69 ATF_TC(RNDADDDATA2);
ATF_TC_HEAD(RNDADDDATA2,tc)70 ATF_TC_HEAD(RNDADDDATA2, tc)
71 {
72 atf_tc_set_md_var(tc, "descr", "checks ioctl(RNDADDDATA) deals with "
73 "garbage len field");
74 }
ATF_TC_BODY(RNDADDDATA2,tc)75 ATF_TC_BODY(RNDADDDATA2, tc)
76 {
77 rnddata_t rd;
78 int fd;
79
80 rump_init();
81 fd = rump_sys_open("/dev/random", O_RDWR, 0);
82 if (fd == -1)
83 atf_tc_fail_errno("cannot open /dev/random");
84
85 rd.entropy = 1;
86 rd.len = -1;
87 ATF_REQUIRE_ERRNO(EINVAL, rump_sys_ioctl(fd, RNDADDDATA, &rd) == -1);
88 }
89
90 ATF_TC(read_random);
ATF_TC_HEAD(read_random,tc)91 ATF_TC_HEAD(read_random, tc)
92 {
93 atf_tc_set_md_var(tc, "descr", "does reading /dev/random return "
94 "within reasonable time");
95 atf_tc_set_md_var(tc, "timeout", "10");
96 }
97
ATF_TC_BODY(read_random,tc)98 ATF_TC_BODY(read_random, tc)
99 {
100 char buf[128];
101 int fd;
102 unsigned i;
103
104 rump_init();
105 for (i = 0; i < 1000; i++) {
106 alarm(2);
107 RL(fd = rump_sys_open("/dev/random", RUMP_O_RDONLY));
108 RL(rump_sys_read(fd, buf, sizeof(buf)));
109 RL(rump_sys_close(fd));
110 }
111 }
112
ATF_TP_ADD_TCS(tp)113 ATF_TP_ADD_TCS(tp)
114 {
115 ATF_TP_ADD_TC(tp, RNDADDDATA);
116 ATF_TP_ADD_TC(tp, RNDADDDATA2);
117 ATF_TP_ADD_TC(tp, read_random);
118
119 return atf_no_error();
120 }
121