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 * $FreeBSD$ 26 */ 27 28 #include <sys/types.h> 29 #include <sys/sysctl.h> 30 31 #include <bsm/audit.h> 32 #include <machine/sysarch.h> 33 34 #include <atf-c.h> 35 #include <unistd.h> 36 37 #include "utils.h" 38 39 static pid_t pid; 40 static char miscreg[80]; 41 static struct pollfd fds[1]; 42 static const char *auclass = "ot"; 43 44 45 /* 46 * Success case of audit(2) is skipped for now as the behaviour is quite 47 * undeterministic. It will be added when the intermittency is resolved. 48 */ 49 50 51 ATF_TC_WITH_CLEANUP(audit_failure); 52 ATF_TC_HEAD(audit_failure, tc) 53 { 54 atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful " 55 "audit(2) call"); 56 } 57 58 ATF_TC_BODY(audit_failure, tc) 59 { 60 pid = getpid(); 61 snprintf(miscreg, sizeof(miscreg), "audit.*%d.*return,failure", pid); 62 63 FILE *pipefd = setup(fds, auclass); 64 /* Failure reason: Invalid argument */ 65 ATF_REQUIRE_EQ(-1, audit(NULL, -1)); 66 check_audit(fds, miscreg, pipefd); 67 } 68 69 ATF_TC_CLEANUP(audit_failure, tc) 70 { 71 cleanup(); 72 } 73 74 75 ATF_TC_WITH_CLEANUP(sysarch_success); 76 ATF_TC_HEAD(sysarch_success, tc) 77 { 78 atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful " 79 "sysarch(2) call"); 80 } 81 82 ATF_TC_BODY(sysarch_success, tc) 83 { 84 pid = getpid(); 85 snprintf(miscreg, sizeof(miscreg), "sysarch.*%d.*return,success", pid); 86 87 /* Set sysnum to the syscall corresponding to the system architecture */ 88 #if defined(I386_GET_IOPERM) /* i386 */ 89 struct i386_ioperm_args i3sysarg; 90 bzero(&i3sysarg, sizeof(i3sysarg)); 91 92 #elif defined(AMD64_GET_FSBASE) /* amd64 */ 93 register_t amd64arg; 94 95 #elif defined(ARM_SYNC_ICACHE) /* ARM */ 96 struct arm_sync_icache_args armsysarg; 97 bzero(&armsysarg, sizeof(armsysarg)); 98 99 #elif defined(SPARC_UTRAP_INSTALL) /* Sparc64 */ 100 struct sparc_utrap_args handler = { 101 .type = UT_DIVISION_BY_ZERO, 102 /* We don't want to change the previous handlers */ 103 .new_precise = (void *)UTH_NOCHANGE, 104 .new_deferred = (void *)UTH_NOCHANGE, 105 .old_precise = NULL, 106 .old_deferred = NULL 107 }; 108 109 struct sparc_utrap_install_args sparc64arg = { 110 .num = ST_DIVISION_BY_ZERO, 111 .handlers = &handler 112 }; 113 #else 114 /* For PowerPC, ARM64, RISCV archs, sysarch(2) is not supported */ 115 atf_tc_skip("sysarch(2) is not supported for the system architecture"); 116 #endif 117 118 FILE *pipefd = setup(fds, auclass); 119 #if defined(I386_GET_IOPERM) 120 ATF_REQUIRE_EQ(0, sysarch(I386_GET_IOPERM, &i3sysarg)); 121 #elif defined(AMD64_GET_FSBASE) 122 ATF_REQUIRE_EQ(0, sysarch(AMD64_GET_FSBASE, &amd64arg)); 123 #elif defined(ARM_SYNC_ICACHE) 124 ATF_REQUIRE_EQ(0, sysarch(ARM_SYNC_ICACHE, &armsysarg)); 125 #elif defined(SPARC_UTRAP_INSTALL) 126 ATF_REQUIRE_EQ(0, sysarch(SPARC_UTRAP_INSTALL, &sparc64arg)); 127 #endif 128 check_audit(fds, miscreg, pipefd); 129 } 130 131 ATF_TC_CLEANUP(sysarch_success, tc) 132 { 133 cleanup(); 134 } 135 136 137 ATF_TC_WITH_CLEANUP(sysarch_failure); 138 ATF_TC_HEAD(sysarch_failure, tc) 139 { 140 atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful " 141 "sysarch(2) call for any architecture"); 142 } 143 144 ATF_TC_BODY(sysarch_failure, tc) 145 { 146 pid = getpid(); 147 snprintf(miscreg, sizeof(miscreg), "sysarch.*%d.*return,failure", pid); 148 149 FILE *pipefd = setup(fds, auclass); 150 /* Failure reason: Invalid argument and Bad address */ 151 ATF_REQUIRE_EQ(-1, sysarch(-1, NULL)); 152 check_audit(fds, miscreg, pipefd); 153 } 154 155 ATF_TC_CLEANUP(sysarch_failure, tc) 156 { 157 cleanup(); 158 } 159 160 161 ATF_TC_WITH_CLEANUP(sysctl_success); 162 ATF_TC_HEAD(sysctl_success, tc) 163 { 164 atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful " 165 "sysctl(3) call"); 166 } 167 168 ATF_TC_BODY(sysctl_success, tc) 169 { 170 int mib[2], maxproc; 171 size_t proclen; 172 173 /* Set mib to retrieve the maximum number of allowed processes */ 174 mib[0] = CTL_KERN; 175 mib[1] = KERN_MAXPROC; 176 proclen = sizeof(maxproc); 177 178 pid = getpid(); 179 snprintf(miscreg, sizeof(miscreg), "sysctl.*%d.*return,success", pid); 180 181 FILE *pipefd = setup(fds, auclass); 182 ATF_REQUIRE_EQ(0, sysctl(mib, 2, &maxproc, &proclen, NULL, 0)); 183 check_audit(fds, miscreg, pipefd); 184 } 185 186 ATF_TC_CLEANUP(sysctl_success, tc) 187 { 188 cleanup(); 189 } 190 191 192 ATF_TC_WITH_CLEANUP(sysctl_failure); 193 ATF_TC_HEAD(sysctl_failure, tc) 194 { 195 atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful " 196 "sysctl(3) call"); 197 } 198 199 ATF_TC_BODY(sysctl_failure, tc) 200 { 201 pid = getpid(); 202 snprintf(miscreg, sizeof(miscreg), "sysctl.*%d.*return,failure", pid); 203 204 FILE *pipefd = setup(fds, auclass); 205 /* Failure reason: Invalid arguments */ 206 ATF_REQUIRE_EQ(-1, sysctl(NULL, 0, NULL, NULL, NULL, 0)); 207 check_audit(fds, miscreg, pipefd); 208 } 209 210 ATF_TC_CLEANUP(sysctl_failure, tc) 211 { 212 cleanup(); 213 } 214 215 216 ATF_TP_ADD_TCS(tp) 217 { 218 ATF_TP_ADD_TC(tp, audit_failure); 219 220 ATF_TP_ADD_TC(tp, sysarch_success); 221 ATF_TP_ADD_TC(tp, sysarch_failure); 222 223 ATF_TP_ADD_TC(tp, sysctl_success); 224 ATF_TP_ADD_TC(tp, sysctl_failure); 225 226 return (atf_no_error()); 227 } 228