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(MIPS_GET_TLS) /* MIPS */ 96 char *mipsarg; 97 98 #elif defined(ARM_SYNC_ICACHE) /* ARM */ 99 struct arm_sync_icache_args armsysarg; 100 bzero(&armsysarg, sizeof(armsysarg)); 101 102 #elif defined(SPARC_UTRAP_INSTALL) /* Sparc64 */ 103 struct sparc_utrap_args handler = { 104 .type = UT_DIVISION_BY_ZERO, 105 /* We don't want to change the previous handlers */ 106 .new_precise = (void *)UTH_NOCHANGE, 107 .new_deferred = (void *)UTH_NOCHANGE, 108 .old_precise = NULL, 109 .old_deferred = NULL 110 }; 111 112 struct sparc_utrap_install_args sparc64arg = { 113 .num = ST_DIVISION_BY_ZERO, 114 .handlers = &handler 115 }; 116 #else 117 /* For PowerPC, ARM64, RISCV archs, sysarch(2) is not supported */ 118 atf_tc_skip("sysarch(2) is not supported for the system architecture"); 119 #endif 120 121 FILE *pipefd = setup(fds, auclass); 122 #if defined(I386_GET_IOPERM) 123 ATF_REQUIRE_EQ(0, sysarch(I386_GET_IOPERM, &i3sysarg)); 124 #elif defined(AMD64_GET_FSBASE) 125 ATF_REQUIRE_EQ(0, sysarch(AMD64_GET_FSBASE, &amd64arg)); 126 #elif defined(MIPS_GET_TLS) 127 ATF_REQUIRE_EQ(0, sysarch(MIPS_GET_TLS, &mipsarg)); 128 #elif defined(ARM_SYNC_ICACHE) 129 ATF_REQUIRE_EQ(0, sysarch(ARM_SYNC_ICACHE, &armsysarg)); 130 #elif defined(SPARC_UTRAP_INSTALL) 131 ATF_REQUIRE_EQ(0, sysarch(SPARC_UTRAP_INSTALL, &sparc64arg)); 132 #endif 133 check_audit(fds, miscreg, pipefd); 134 } 135 136 ATF_TC_CLEANUP(sysarch_success, tc) 137 { 138 cleanup(); 139 } 140 141 142 ATF_TC_WITH_CLEANUP(sysarch_failure); 143 ATF_TC_HEAD(sysarch_failure, tc) 144 { 145 atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful " 146 "sysarch(2) call for any architecture"); 147 } 148 149 ATF_TC_BODY(sysarch_failure, tc) 150 { 151 pid = getpid(); 152 snprintf(miscreg, sizeof(miscreg), "sysarch.*%d.*return,failure", pid); 153 154 FILE *pipefd = setup(fds, auclass); 155 /* Failure reason: Invalid argument and Bad address */ 156 ATF_REQUIRE_EQ(-1, sysarch(-1, NULL)); 157 check_audit(fds, miscreg, pipefd); 158 } 159 160 ATF_TC_CLEANUP(sysarch_failure, tc) 161 { 162 cleanup(); 163 } 164 165 166 ATF_TC_WITH_CLEANUP(sysctl_success); 167 ATF_TC_HEAD(sysctl_success, tc) 168 { 169 atf_tc_set_md_var(tc, "descr", "Tests the audit of a successful " 170 "sysctl(3) call"); 171 } 172 173 ATF_TC_BODY(sysctl_success, tc) 174 { 175 int mib[2], maxproc; 176 size_t proclen; 177 178 /* Set mib to retrieve the maximum number of allowed processes */ 179 mib[0] = CTL_KERN; 180 mib[1] = KERN_MAXPROC; 181 proclen = sizeof(maxproc); 182 183 pid = getpid(); 184 snprintf(miscreg, sizeof(miscreg), "sysctl.*%d.*return,success", pid); 185 186 FILE *pipefd = setup(fds, auclass); 187 ATF_REQUIRE_EQ(0, sysctl(mib, 2, &maxproc, &proclen, NULL, 0)); 188 check_audit(fds, miscreg, pipefd); 189 } 190 191 ATF_TC_CLEANUP(sysctl_success, tc) 192 { 193 cleanup(); 194 } 195 196 197 ATF_TC_WITH_CLEANUP(sysctl_failure); 198 ATF_TC_HEAD(sysctl_failure, tc) 199 { 200 atf_tc_set_md_var(tc, "descr", "Tests the audit of an unsuccessful " 201 "sysctl(3) call"); 202 } 203 204 ATF_TC_BODY(sysctl_failure, tc) 205 { 206 pid = getpid(); 207 snprintf(miscreg, sizeof(miscreg), "sysctl.*%d.*return,failure", pid); 208 209 FILE *pipefd = setup(fds, auclass); 210 /* Failure reason: Invalid arguments */ 211 ATF_REQUIRE_EQ(-1, sysctl(NULL, 0, NULL, NULL, NULL, 0)); 212 check_audit(fds, miscreg, pipefd); 213 } 214 215 ATF_TC_CLEANUP(sysctl_failure, tc) 216 { 217 cleanup(); 218 } 219 220 221 ATF_TP_ADD_TCS(tp) 222 { 223 ATF_TP_ADD_TC(tp, audit_failure); 224 225 ATF_TP_ADD_TC(tp, sysarch_success); 226 ATF_TP_ADD_TC(tp, sysarch_failure); 227 228 ATF_TP_ADD_TC(tp, sysctl_success); 229 ATF_TP_ADD_TC(tp, sysctl_failure); 230 231 return (atf_no_error()); 232 } 233