1/*-
2 * Copyright (c) 2018 Aniket Pandey
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * SUCH DAMAGE.
24 */
25
26#include <sys/types.h>
27#include <sys/sysctl.h>
28
29#include <bsm/audit.h>
30#include <machine/sysarch.h>
31
32#include <atf-c.h>
33#include <unistd.h>
34
35#include "utils.h"
36
37static pid_t pid;
38static char miscreg[80];
39static struct pollfd fds[1];
40static const char *auclass = "ot";
41
42
43/*
44 * Success case of audit(2) is skipped for now as the behaviour is quite
45 * undeterministic. It will be added when the intermittency is resolved.
46 */
47
48
49ATF_TC_WITH_CLEANUP(audit_failure);
50ATF_TC_HEAD(audit_failure, tc)
51{
52	atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful "
53					"audit(2) call");
54}
55
56ATF_TC_BODY(audit_failure, tc)
57{
58	pid = getpid();
59	snprintf(miscreg, sizeof(miscreg), "audit.*%d.*return,failure", pid);
60
61	FILE *pipefd = setup(fds, auclass);
62	/* Failure reason: Invalid argument */
63	ATF_REQUIRE_EQ(-1, audit(NULL, -1));
64	check_audit(fds, miscreg, pipefd);
65}
66
67ATF_TC_CLEANUP(audit_failure, tc)
68{
69	cleanup();
70}
71
72
73ATF_TC_WITH_CLEANUP(sysarch_success);
74ATF_TC_HEAD(sysarch_success, tc)
75{
76	atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
77					"sysarch(2) call");
78}
79
80ATF_TC_BODY(sysarch_success, tc)
81{
82	pid = getpid();
83	snprintf(miscreg, sizeof(miscreg), "sysarch.*%d.*return,success", pid);
84
85	/* Set sysnum to the syscall corresponding to the system architecture */
86#if defined(I386_GET_IOPERM)		/* i386 */
87	struct i386_ioperm_args i3sysarg;
88	bzero(&i3sysarg, sizeof(i3sysarg));
89
90#elif defined(AMD64_GET_FSBASE)		/* amd64 */
91	register_t amd64arg;
92
93#elif defined(ARM_SYNC_ICACHE)		/* ARM */
94	struct arm_sync_icache_args armsysarg;
95	bzero(&armsysarg, sizeof(armsysarg));
96
97#elif defined(SPARC_UTRAP_INSTALL)	/* Sparc64 */
98	struct sparc_utrap_args handler = {
99		.type		= UT_DIVISION_BY_ZERO,
100		/* We don't want to change the previous handlers */
101		.new_precise	= (void *)UTH_NOCHANGE,
102		.new_deferred	= (void *)UTH_NOCHANGE,
103		.old_precise	= NULL,
104		.old_deferred	= NULL
105	};
106
107	struct sparc_utrap_install_args sparc64arg = {
108		.num 		= ST_DIVISION_BY_ZERO,
109		.handlers	= &handler
110	};
111#else
112	/* For PowerPC, ARM64, RISCV archs, sysarch(2) is not supported */
113	atf_tc_skip("sysarch(2) is not supported for the system architecture");
114#endif
115
116	FILE *pipefd = setup(fds, auclass);
117#if defined(I386_GET_IOPERM)
118	ATF_REQUIRE_EQ(0, sysarch(I386_GET_IOPERM, &i3sysarg));
119#elif defined(AMD64_GET_FSBASE)
120	ATF_REQUIRE_EQ(0, sysarch(AMD64_GET_FSBASE, &amd64arg));
121#elif defined(ARM_SYNC_ICACHE)
122	ATF_REQUIRE_EQ(0, sysarch(ARM_SYNC_ICACHE, &armsysarg));
123#elif defined(SPARC_UTRAP_INSTALL)
124	ATF_REQUIRE_EQ(0, sysarch(SPARC_UTRAP_INSTALL, &sparc64arg));
125#endif
126	check_audit(fds, miscreg, pipefd);
127}
128
129ATF_TC_CLEANUP(sysarch_success, tc)
130{
131	cleanup();
132}
133
134
135ATF_TC_WITH_CLEANUP(sysarch_failure);
136ATF_TC_HEAD(sysarch_failure, tc)
137{
138	atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful "
139				       "sysarch(2) call for any architecture");
140}
141
142ATF_TC_BODY(sysarch_failure, tc)
143{
144	pid = getpid();
145	snprintf(miscreg, sizeof(miscreg), "sysarch.*%d.*return,failure", pid);
146
147	FILE *pipefd = setup(fds, auclass);
148	/* Failure reason: Invalid argument and Bad address */
149	ATF_REQUIRE_EQ(-1, sysarch(-1, NULL));
150	check_audit(fds, miscreg, pipefd);
151}
152
153ATF_TC_CLEANUP(sysarch_failure, tc)
154{
155	cleanup();
156}
157
158
159ATF_TC_WITH_CLEANUP(sysctl_success);
160ATF_TC_HEAD(sysctl_success, tc)
161{
162	atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful "
163					"sysctl(3) call");
164}
165
166ATF_TC_BODY(sysctl_success, tc)
167{
168	int mib[2], maxproc;
169	size_t proclen;
170
171	/* Set mib to retrieve the maximum number of allowed processes */
172	mib[0] = CTL_KERN;
173	mib[1] = KERN_MAXPROC;
174	proclen = sizeof(maxproc);
175
176	pid = getpid();
177	snprintf(miscreg, sizeof(miscreg), "sysctl.*%d.*return,success", pid);
178
179	FILE *pipefd = setup(fds, auclass);
180	ATF_REQUIRE_EQ(0, sysctl(mib, 2, &maxproc, &proclen, NULL, 0));
181	check_audit(fds, miscreg, pipefd);
182}
183
184ATF_TC_CLEANUP(sysctl_success, tc)
185{
186	cleanup();
187}
188
189
190ATF_TC_WITH_CLEANUP(sysctl_failure);
191ATF_TC_HEAD(sysctl_failure, tc)
192{
193	atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful "
194					"sysctl(3) call");
195}
196
197ATF_TC_BODY(sysctl_failure, tc)
198{
199	pid = getpid();
200	snprintf(miscreg, sizeof(miscreg), "sysctl.*%d.*return,failure", pid);
201
202	FILE *pipefd = setup(fds, auclass);
203	/* Failure reason: Invalid arguments */
204	ATF_REQUIRE_EQ(-1, sysctl(NULL, 0, NULL, NULL, NULL, 0));
205	check_audit(fds, miscreg, pipefd);
206}
207
208ATF_TC_CLEANUP(sysctl_failure, tc)
209{
210	cleanup();
211}
212
213
214ATF_TP_ADD_TCS(tp)
215{
216	ATF_TP_ADD_TC(tp, audit_failure);
217
218	ATF_TP_ADD_TC(tp, sysarch_success);
219	ATF_TP_ADD_TC(tp, sysarch_failure);
220
221	ATF_TP_ADD_TC(tp, sysctl_success);
222	ATF_TP_ADD_TC(tp, sysctl_failure);
223
224	return (atf_no_error());
225}
226