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
45ATF_TC(RNDADDDATA);
46ATF_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. */
53ATF_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
69ATF_TC(RNDADDDATA2);
70ATF_TC_HEAD(RNDADDDATA2, tc)
71{
72	atf_tc_set_md_var(tc, "descr", "checks ioctl(RNDADDDATA) deals with "
73	    "garbage len field");
74}
75ATF_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
90ATF_TC(read_random);
91ATF_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
98ATF_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
113ATF_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