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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 | #include <stdio.h> #include <sys/sysctl.h> #include <spawn_private.h> #include <signal.h> #include <sys/reason.h> #ifdef T_NAMESPACE #undef T_NAMESPACE #endif #include <darwintest.h> #include <darwintest_utils.h> T_GLOBAL_META( T_META_RADAR_COMPONENT_NAME("xnu"), T_META_RADAR_COMPONENT_VERSION("spawn"), T_META_NAMESPACE("xnu.spawn")); extern char **environ; #define SYSCTL_CRASH_BEHAVIOR_TEST_MODE "kern.crash_behavior_test_mode=1" #define SYSCTL_CRASH_BEHAVIOR_WOULD_PANIC "kern.crash_behavior_test_would_panic" #define TEST_REASON_CODE 5 static void _do_set_crash_behavior_test(char *child_mode, int signal, uint32_t flags, bool expect_panic) { bool should_wait = (strcmp(child_mode, "wait") == 0); bool reason = (strcmp(child_mode, "reason") == 0); bool dirty = (strcmp(child_mode, "dirty") == 0); bool shutdown = (strcmp(child_mode, "clean") == 0) || dirty; uint64_t deadline = mach_continuous_time(); // 0. clear SYSCTL_CRASH_BEHAVIOR_WOULD_PANIC int would_panic = 0; size_t length = sizeof(would_panic); int ret = sysctlbyname(SYSCTL_CRASH_BEHAVIOR_WOULD_PANIC, NULL, 0, &would_panic, length); T_ASSERT_POSIX_SUCCESS(ret, "Clearing SYSCTL_CRASH_BEHAVIOR_WOULD_PANIC"); // 1. posix_spawn a child process char *test_program = "./posix_spawnattr_set_crash_behavior_np_child"; char *child_args[3]; posix_spawnattr_t attrs; posix_spawnattr_init(&attrs); ret = posix_spawnattr_set_crash_behavior_np(&attrs, flags); T_ASSERT_POSIX_ZERO(ret, "posix_spawnattr_set_crash_behavior_np"); if (should_wait) { // For the purpose of the test we set the deadline to be now to avoid // making the test wait ret = posix_spawnattr_set_crash_behavior_deadline_np(&attrs, deadline, flags); T_ASSERT_POSIX_ZERO(ret, "posix_spawnattr_set_crash_behavior_deadline_np: %lld", deadline); } child_args[0] = test_program; child_args[1] = child_mode; child_args[2] = NULL; pid_t child_pid = 0; ret = posix_spawn(&child_pid, child_args[0], NULL, &attrs, &child_args[0], environ); T_ASSERT_POSIX_ZERO(ret, "posix_spawn"); posix_spawnattr_destroy(&attrs); if (should_wait) { while (mach_continuous_time() <= deadline) { usleep(1); } } if (signal != 0) { ret = kill(child_pid, signal); T_ASSERT_POSIX_SUCCESS(ret, "kill(%d, %d)", child_pid, signal); } if (reason) { ret = terminate_with_reason(child_pid, OS_REASON_TEST, TEST_REASON_CODE, "Test forcing crash", OS_REASON_FLAG_CONSISTENT_FAILURE | OS_REASON_FLAG_NO_CRASH_REPORT); T_ASSERT_POSIX_SUCCESS(ret, "terminate_with_reason(%d)", child_pid); } if (dirty) { ret = proc_set_dirty(child_pid, true); T_ASSERT_POSIX_SUCCESS(ret, "proc_set_dirty(%d)", child_pid); } if (shutdown) { ret = proc_terminate(child_pid, &signal); T_ASSERT_POSIX_SUCCESS(ret, "proc_terminate(%d, %d)", child_pid, signal); } // 2. Wait for the child to exit int child_status; ret = wait4(-1, &child_status, 0, NULL); T_ASSERT_POSIX_SUCCESS(ret, "wait4"); // 3. Check if we would have panic'ed would_panic = 0; length = sizeof(would_panic); ret = sysctlbyname(SYSCTL_CRASH_BEHAVIOR_WOULD_PANIC, &would_panic, &length, NULL, 0); T_ASSERT_POSIX_SUCCESS(ret, "SYSCTL_CRASH_BEHAVIOR_WOULD_PANIC"); T_EXPECT_EQ(would_panic, expect_panic, NULL); } T_DECL(set_crash_behavior_panic_on_crash_with_crash, "set_crash_behavior_panic_on_crash_with_crash", T_META_SYSCTL_INT(SYSCTL_CRASH_BEHAVIOR_TEST_MODE), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) { _do_set_crash_behavior_test("crash", 0, POSIX_SPAWN_PANIC_ON_CRASH, true); } T_DECL(set_crash_behavior_panic_on_crash_with_exit, "set_crash_behavior_panic_on_crash_with_exit", T_META_SYSCTL_INT(SYSCTL_CRASH_BEHAVIOR_TEST_MODE), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) { _do_set_crash_behavior_test("exit", 0, POSIX_SPAWN_PANIC_ON_CRASH, false); } T_DECL(set_crash_behavior_panic_on_crash_with_success, "set_crash_behavior_panic_on_crash_with_success", T_META_SYSCTL_INT(SYSCTL_CRASH_BEHAVIOR_TEST_MODE), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) { _do_set_crash_behavior_test("success", 0, POSIX_SPAWN_PANIC_ON_CRASH, false); } T_DECL(set_crash_behavior_panic_on_nonzero_with_crash, "set_crash_behavior_panic_on_nonzero_with_crash", T_META_SYSCTL_INT(SYSCTL_CRASH_BEHAVIOR_TEST_MODE), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) { _do_set_crash_behavior_test("crash", 0, POSIX_SPAWN_PANIC_ON_NON_ZERO_EXIT, false); } T_DECL(set_crash_behavior_panic_on_nonzero_with_exit, "set_crash_behavior_panic_on_nonzero_with_exit", T_META_SYSCTL_INT(SYSCTL_CRASH_BEHAVIOR_TEST_MODE), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) { _do_set_crash_behavior_test("exit", 0, POSIX_SPAWN_PANIC_ON_NON_ZERO_EXIT, true); } T_DECL(set_crash_behavior_panic_on_nonzero_with_success, "set_crash_behavior_panic_on_nonzero_with_success", T_META_SYSCTL_INT(SYSCTL_CRASH_BEHAVIOR_TEST_MODE), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) { _do_set_crash_behavior_test("success", 0, POSIX_SPAWN_PANIC_ON_NON_ZERO_EXIT, false); } T_DECL(set_crash_behavior_panic_on_crash_cancelled, "set_crash_behavior_panic_on_crash_cancelled", T_META_SYSCTL_INT(SYSCTL_CRASH_BEHAVIOR_TEST_MODE), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) { _do_set_crash_behavior_test("wait", SIGUSR1, POSIX_SPAWN_PANIC_ON_CRASH, false); } T_DECL(set_crash_behavior_panic_on_crash_sigterm, "set_crash_behavior_panic_on_crash_sigterm", T_META_SYSCTL_INT(SYSCTL_CRASH_BEHAVIOR_TEST_MODE), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) { _do_set_crash_behavior_test("spin", SIGTERM, POSIX_SPAWN_PANIC_ON_CRASH, false); } T_DECL(set_crash_behavior_panic_on_crash_sigkill, "set_crash_behavior_panic_on_crash_sigkill", T_META_SYSCTL_INT(SYSCTL_CRASH_BEHAVIOR_TEST_MODE), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) { _do_set_crash_behavior_test("spin", SIGKILL, POSIX_SPAWN_PANIC_ON_CRASH, false); } T_DECL(set_crash_behavior_panic_on_crash_terminate_with_reason, "set_crash_behavior_panic_on_crash_terminate_with_reason", T_META_SYSCTL_INT(SYSCTL_CRASH_BEHAVIOR_TEST_MODE), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) { _do_set_crash_behavior_test("reason", 0, POSIX_SPAWN_PANIC_ON_CRASH, true); } T_DECL(set_crash_behavior_panic_on_crash_proc_terminate_clean, "set_crash_behavior_panic_on_crash_proc_terminate_clean", T_META_SYSCTL_INT(SYSCTL_CRASH_BEHAVIOR_TEST_MODE), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) { _do_set_crash_behavior_test("clean", 0, POSIX_SPAWN_PANIC_ON_CRASH, false); } T_DECL(set_crash_behavior_panic_on_crash_proc_terminate_dirty, "set_crash_behavior_panic_on_crash_proc_terminate_dirty", T_META_SYSCTL_INT(SYSCTL_CRASH_BEHAVIOR_TEST_MODE), T_META_REQUIRES_SYSCTL_EQ("kern.development", 1)) { _do_set_crash_behavior_test("dirty", 0, POSIX_SPAWN_PANIC_ON_CRASH, false); } |