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[thirdparty/systemd.git] / src / core / main.c
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53e1b683 1/* SPDX-License-Identifier: LGPL-2.1+ */
a7334b09 2
60918275 3#include <errno.h>
3dfc9763 4#include <fcntl.h>
f170852a 5#include <getopt.h>
97c4f35c 6#include <signal.h>
3dfc9763
LP		 7#include <stdio.h>
8#include <string.h>
664f88a7 9#include <sys/mount.h>
3dfc9763 10#include <sys/prctl.h>
b9e74c39 11#include <sys/reboot.h>
3dfc9763
LP		 12#include <sys/stat.h>
13#include <unistd.h>
349cc4a5 14#if HAVE_SECCOMP
b64a3d86
LP		 15#include <seccomp.h>
16#endif
349cc4a5 17#if HAVE_VALGRIND_VALGRIND_H
3dfc9763
LP		 18#include <valgrind/valgrind.h>
19#endif
54b434b1 20
718db961 21#include "sd-bus.h"
cf0fbc49 22#include "sd-daemon.h"
b2e7486c 23#include "sd-messages.h"
3dfc9763 24
b5efdb8a 25#include "alloc-util.h"
d9d93745 26#include "architecture.h"
3dfc9763
LP		 27#include "build.h"
28#include "bus-error.h"
29#include "bus-util.h"
430f0182 30#include "capability-util.h"
a88c5b8a 31#include "cgroup-util.h"
24efb112 32#include "clock-util.h"
3dfc9763 33#include "conf-parser.h"
618234a5 34#include "cpu-set-util.h"
bbc1acab 35#include "dbus.h"
3dfc9763
LP		 36#include "dbus-manager.h"
37#include "def.h"
eee8b7ab 38#include "emergency-action.h"
3dfc9763 39#include "env-util.h"
57b7a260 40#include "exit-status.h"
3ffd4af2 41#include "fd-util.h"
3dfc9763 42#include "fdset.h"
718db961 43#include "fileio.h"
f97b34a6 44#include "format-util.h"
f4f15635 45#include "fs-util.h"
3dfc9763
LP		 46#include "hostname-setup.h"
47#include "ima-setup.h"
48#include "killall.h"
49#include "kmod-setup.h"
eefc66aa 50#include "limits-util.h"
d7b8eec7 51#include "load-fragment.h"
3dfc9763 52#include "log.h"
b6e66135 53#include "loopback-setup.h"
b6e66135 54#include "machine-id-setup.h"
3dfc9763
LP		 55#include "manager.h"
56#include "missing.h"
57#include "mount-setup.h"
d58ad743 58#include "os-util.h"
3dfc9763 59#include "pager.h"
6bedfcbb 60#include "parse-util.h"
7d5ceb64 61#include "path-util.h"
294bf0c3 62#include "pretty-print.h"
4e731273 63#include "proc-cmdline.h"
3dfc9763 64#include "process-util.h"
8869a0b4 65#include "raw-clone.h"
78f22b97 66#include "rlimit-util.h"
349cc4a5 67#if HAVE_SECCOMP
83f12b27
FS		 68#include "seccomp-util.h"
69#endif
b6e66135 70#include "selinux-setup.h"
3dfc9763
LP		 71#include "selinux-util.h"
72#include "signal-util.h"
ffbd2c4d 73#include "smack-setup.h"
3dfc9763 74#include "special.h"
8fcde012 75#include "stat-util.h"
15a5e950 76#include "stdio-util.h"
3dfc9763
LP		 77#include "strv.h"
78#include "switch-root.h"
a8b627aa 79#include "sysctl-util.h"
3dfc9763 80#include "terminal-util.h"
8612da97 81#include "umask-util.h"
b1d4f8e1 82#include "user-util.h"
9ce17593 83#include "util.h"
3dfc9763
LP		 84#include "virt.h"
85#include "watchdog.h"
b6e66135 86
7e11a95e
EV		 87#if HAS_FEATURE_ADDRESS_SANITIZER
88#include <sanitizer/lsan_interface.h>
89#endif
90
f170852a
LP		 91static enum {
92 ACTION_RUN,
e965d56d 93 ACTION_HELP,
9ba0bc4e 94 ACTION_VERSION,
e537352b 95 ACTION_TEST,
bbc1acab
YW		 96 ACTION_DUMP_CONFIGURATION_ITEMS,
97 ACTION_DUMP_BUS_PROPERTIES,
fa0f4d8a 98} arg_action = ACTION_RUN;
fa0f4d8a 99static char *arg_default_unit = NULL;
463d0d15 100static bool arg_system = false;
fa0f4d8a 101static bool arg_dump_core = true;
fa0f4d8a 102static int arg_crash_chvt = -1;
b9e74c39
LP		 103static bool arg_crash_shell = false;
104static bool arg_crash_reboot = false;
7d5ceb64 105static char *arg_confirm_spawn = NULL;
7a293242 106static ShowStatus arg_show_status = _SHOW_STATUS_INVALID;
bf4df7c3 107static bool arg_switched_root = false;
0221d68a 108static PagerFlags arg_pager_flags = 0;
2a12e32e 109static bool arg_service_watchdogs = true;
706343f4 110static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
0a494f1f 111static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
1f19a534
OS		 112static usec_t arg_default_restart_usec = DEFAULT_RESTART_USEC;
113static usec_t arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC;
114static usec_t arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
3f41e1e5
LN		 115static usec_t arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL;
116static unsigned arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST;
e96d6be7
LP		 117static usec_t arg_runtime_watchdog = 0;
118static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
c6885f5f 119static char *arg_early_core_pattern = NULL;
8a2c1fbf 120static char *arg_watchdog_device = NULL;
97d0e5f8 121static char **arg_default_environment = NULL;
517d56b1 122static struct rlimit *arg_default_rlimit[_RLIMIT_MAX] = {};
a103496c 123static uint64_t arg_capability_bounding_set = CAP_ALL;
39362f6f 124static bool arg_no_new_privs = false;
3a43da28 125static nsec_t arg_timer_slack_nsec = NSEC_INFINITY;
bd8f585b 126static usec_t arg_default_timer_accuracy_usec = 1 * USEC_PER_MINUTE;
d3b1c508
LP		 127static Set* arg_syscall_archs = NULL;
128static FILE* arg_serialization = NULL;
a88c5b8a 129static int arg_default_cpu_accounting = -1;
13c31542 130static bool arg_default_io_accounting = false;
377bfd2d 131static bool arg_default_ip_accounting = false;
085afe36 132static bool arg_default_blockio_accounting = false;
444d5863 133static bool arg_default_memory_accounting = MEMORY_ACCOUNTING_DEFAULT;
9ded9cd1 134static bool arg_default_tasks_accounting = true;
79baeeb9 135static uint64_t arg_default_tasks_max = UINT64_MAX;
ee48dbd5 136static sd_id128_t arg_machine_id = {};
ae8c7939 137static EmergencyAction arg_cad_burst_action = EMERGENCY_ACTION_REBOOT_FORCE;
afcfaa69 138static OOMPolicy arg_default_oom_policy = OOM_STOP;
4fc935ca 139
bb259772
LP		 140_noreturn_ static void freeze_or_exit_or_reboot(void) {
141
c3b6a348
LP		 142 /* If we are running in a container, let's prefer exiting, after all we can propagate an exit code to
143 * the container manager, and thus inform it that something went wrong. */
bb259772
LP		 144 if (detect_container() > 0) {
145 log_emergency("Exiting PID 1...");
c3b6a348 146 _exit(EXIT_EXCEPTION);
bb259772 147 }
b9e74c39
LP		 148
149 if (arg_crash_reboot) {
150 log_notice("Rebooting in 10s...");
151 (void) sleep(10);
152
153 log_notice("Rebooting now...");
154 (void) reboot(RB_AUTOBOOT);
155 log_emergency_errno(errno, "Failed to reboot: %m");
156 }
157
158 log_emergency("Freezing execution.");
159 freeze();
160}
161
848e863a 162_noreturn_ static void crash(int sig) {
7d06dad9
MS		 163 struct sigaction sa;
164 pid_t pid;
97c4f35c 165
df0ff127 166 if (getpid_cached() != 1)
abb26902 167 /* Pass this on immediately, if this is not PID 1 */
92ca4cac 168 (void) raise(sig);
abb26902 169 else if (!arg_dump_core)
4104970e 170 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig));
97c4f35c 171 else {
7d06dad9 172 sa = (struct sigaction) {
189d5bac 173 .sa_handler = nop_signal_handler,
b92bea5d
ZJS		 174 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
175 };
97c4f35c 176
6f5e3f35 177 /* We want to wait for the core process, hence let's enable SIGCHLD */
92ca4cac 178 (void) sigaction(SIGCHLD, &sa, NULL);
6f5e3f35 179
8869a0b4 180 pid = raw_clone(SIGCHLD);
e62d8c39 181 if (pid < 0)
56f64d95 182 log_emergency_errno(errno, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig));
97c4f35c 183 else if (pid == 0) {
97c4f35c 184 /* Enable default signal handler for core dump */
15a90032 185
92ca4cac
LP		 186 sa = (struct sigaction) {
187 .sa_handler = SIG_DFL,
188 };
189 (void) sigaction(sig, &sa, NULL);
97c4f35c 190
15a90032
LP		 191 /* Don't limit the coredump size */
192 (void) setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY));
97c4f35c
LP		 193
194 /* Just to be sure... */
e62d9b81 195 (void) chdir("/");
97c4f35c
LP		 196
197 /* Raise the signal again */
ee05e779 198 pid = raw_getpid();
92ca4cac 199 (void) kill(pid, sig); /* raise() would kill the parent */
97c4f35c
LP		 200
201 assert_not_reached("We shouldn't be here...");
bb85a582 202 _exit(EXIT_EXCEPTION);
4fc935ca 203 } else {
8e12a6ae
LP		 204 siginfo_t status;
205 int r;
4fc935ca
LP		 206
207 /* Order things nicely. */
e62d8c39
ZJS		 208 r = wait_for_terminate(pid, &status);
209 if (r < 0)
da927ba9 210 log_emergency_errno(r, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig));
8e12a6ae 211 else if (status.si_code != CLD_DUMPED)
ee05e779
ZJS		 212 log_emergency("Caught <%s>, core dump failed (child "PID_FMT", code=%s, status=%i/%s).",
213 signal_to_string(sig),
214 pid, sigchld_code_to_string(status.si_code),
215 status.si_status,
216 strna(status.si_code == CLD_EXITED
38107f5a 217 ? exit_status_to_string(status.si_status, EXIT_STATUS_MINIMAL)
ee05e779 218 : signal_to_string(status.si_status)));
4fc935ca 219 else
4104970e 220 log_emergency("Caught <%s>, dumped core as pid "PID_FMT".", signal_to_string(sig), pid);
97c4f35c
LP		 221 }
222 }
223
b9e74c39 224 if (arg_crash_chvt >= 0)
92ca4cac 225 (void) chvt(arg_crash_chvt);
601f6a1e 226
7d06dad9
MS		 227 sa = (struct sigaction) {
228 .sa_handler = SIG_IGN,
229 .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
230 };
231
232 /* Let the kernel reap children for us */
233 (void) sigaction(SIGCHLD, &sa, NULL);
8c43883a 234
7d06dad9 235 if (arg_crash_shell) {
b9e74c39 236 log_notice("Executing crash shell in 10s...");
92ca4cac 237 (void) sleep(10);
4fc935ca 238
8869a0b4 239 pid = raw_clone(SIGCHLD);
cd3bd60a 240 if (pid < 0)
56f64d95 241 log_emergency_errno(errno, "Failed to fork off crash shell: %m");
6f5e3f35 242 else if (pid == 0) {
b9e74c39 243 (void) setsid();
92ca4cac 244 (void) make_console_stdio();
595225af 245 (void) rlimit_nofile_safe();
92ca4cac 246 (void) execle("/bin/sh", "/bin/sh", NULL, environ);
6f5e3f35 247
ee05e779 248 log_emergency_errno(errno, "execle() failed: %m");
bb85a582 249 _exit(EXIT_EXCEPTION);
b9e74c39
LP		 250 } else {
251 log_info("Spawned crash shell as PID "PID_FMT".", pid);
4cf0b03b 252 (void) wait_for_terminate(pid, NULL);
b9e74c39 253 }
4fc935ca
LP		 254 }
255
bb259772 256 freeze_or_exit_or_reboot();
97c4f35c
LP		 257}
258
259static void install_crash_handler(void) {
297d563d 260 static const struct sigaction sa = {
b92bea5d 261 .sa_handler = crash,
297d563d 262 .sa_flags = SA_NODEFER, /* So that we can raise the signal again from the signal handler */
b92bea5d 263 };
297d563d 264 int r;
97c4f35c 265
297d563d
LP		 266 /* We ignore the return value here, since, we don't mind if we
267 * cannot set up a crash handler */
268 r = sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
269 if (r < 0)
270 log_debug_errno(r, "I had trouble setting up the crash handler, ignoring: %m");
97c4f35c 271}
f170852a 272
56d96fc0
LP		 273static int console_setup(void) {
274 _cleanup_close_ int tty_fd = -1;
275 int r;
80876c20 276
512947d4 277 tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
23bbb0de
MS		 278 if (tty_fd < 0)
279 return log_error_errno(tty_fd, "Failed to open /dev/console: %m");
80876c20 280
56d96fc0
LP		 281 /* We don't want to force text mode. plymouth may be showing
282 * pictures already from initrd. */
512947d4 283 r = reset_terminal_fd(tty_fd, false);
23bbb0de
MS		 284 if (r < 0)
285 return log_error_errno(r, "Failed to reset /dev/console: %m");
843d2643 286
56d96fc0 287 return 0;
80876c20
LP		 288}
289
b9e74c39
LP		 290static int parse_crash_chvt(const char *value) {
291 int b;
292
293 if (safe_atoi(value, &arg_crash_chvt) >= 0)
294 return 0;
295
296 b = parse_boolean(value);
297 if (b < 0)
298 return b;
299
300 if (b > 0)
301 arg_crash_chvt = 0; /* switch to where kmsg goes */
302 else
303 arg_crash_chvt = -1; /* turn off switching */
304
305 return 0;
306}
307
7d5ceb64
FB		 308static int parse_confirm_spawn(const char *value, char **console) {
309 char *s;
310 int r;
311
312 r = value ? parse_boolean(value) : 1;
313 if (r == 0) {
314 *console = NULL;
315 return 0;
316 }
317
318 if (r > 0) /* on with default tty */
319 s = strdup("/dev/console");
320 else if (is_path(value)) /* on with fully qualified path */
321 s = strdup(value);
322 else /* on with only a tty file name, not a fully qualified path */
323 s = strjoin("/dev/", value);
324 if (!s)
325 return -ENOMEM;
5b65ae15 326
7d5ceb64
FB		 327 *console = s;
328 return 0;
329}
330
ee48dbd5 331static int set_machine_id(const char *m) {
e042eab7 332 sd_id128_t t;
8b26cdbd 333 assert(m);
ee48dbd5 334
e042eab7 335 if (sd_id128_from_string(m, &t) < 0)
ee48dbd5
NC		 336 return -EINVAL;
337
e042eab7 338 if (sd_id128_is_null(t))
ee48dbd5
NC		 339 return -EINVAL;
340
e042eab7 341 arg_machine_id = t;
ee48dbd5
NC		 342 return 0;
343}
344
96287a49 345static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
f170852a 346
059cb385 347 int r;
f170852a 348
059cb385 349 assert(key);
5192bd19 350
1d84ad94 351 if (STR_IN_SET(key, "systemd.unit", "rd.systemd.unit")) {
bf4df7c3 352
1d84ad94
LP		 353 if (proc_cmdline_value_missing(key, value))
354 return 0;
bf4df7c3 355
1d84ad94
LP		 356 if (!unit_name_is_valid(value, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
357 log_warning("Unit name specified on %s= is not valid, ignoring: %s", key, value);
358 else if (in_initrd() == !!startswith(key, "rd.")) {
359 if (free_and_strdup(&arg_default_unit, value) < 0)
360 return log_oom();
361 }
f170852a 362
1d84ad94 363 } else if (proc_cmdline_key_streq(key, "systemd.dump_core")) {
4fc935ca 364
1d84ad94 365 r = value ? parse_boolean(value) : true;
fb472900 366 if (r < 0)
5e1ee764 367 log_warning_errno(r, "Failed to parse dump core switch %s, ignoring: %m", value);
4fc935ca 368 else
fa0f4d8a 369 arg_dump_core = r;
4fc935ca 370
c6885f5f
FB		 371 } else if (proc_cmdline_key_streq(key, "systemd.early_core_pattern")) {
372
373 if (proc_cmdline_value_missing(key, value))
374 return 0;
375
376 if (path_is_absolute(value))
377 (void) parse_path_argument_and_warn(value, false, &arg_early_core_pattern);
378 else
379 log_warning("Specified core pattern '%s' is not an absolute path, ignoring.", value);
380
1d84ad94 381 } else if (proc_cmdline_key_streq(key, "systemd.crash_chvt")) {
b9e74c39 382
1d84ad94
LP		 383 if (!value)
384 arg_crash_chvt = 0; /* turn on */
5e1ee764
YW		 385 else {
386 r = parse_crash_chvt(value);
387 if (r < 0)
388 log_warning_errno(r, "Failed to parse crash chvt switch %s, ignoring: %m", value);
389 }
b9e74c39 390
1d84ad94 391 } else if (proc_cmdline_key_streq(key, "systemd.crash_shell")) {
4fc935ca 392
1d84ad94 393 r = value ? parse_boolean(value) : true;
fb472900 394 if (r < 0)
5e1ee764 395 log_warning_errno(r, "Failed to parse crash shell switch %s, ignoring: %m", value);
4fc935ca 396 else
fa0f4d8a 397 arg_crash_shell = r;
5e7ee61c 398
1d84ad94 399 } else if (proc_cmdline_key_streq(key, "systemd.crash_reboot")) {
5e7ee61c 400
1d84ad94 401 r = value ? parse_boolean(value) : true;
b9e74c39 402 if (r < 0)
5e1ee764 403 log_warning_errno(r, "Failed to parse crash reboot switch %s, ignoring: %m", value);
5e7ee61c 404 else
b9e74c39 405 arg_crash_reboot = r;
5e7ee61c 406
1d84ad94
LP		 407 } else if (proc_cmdline_key_streq(key, "systemd.confirm_spawn")) {
408 char *s;
7d5ceb64 409
1d84ad94 410 r = parse_confirm_spawn(value, &s);
059cb385 411 if (r < 0)
5e1ee764
YW		 412 log_warning_errno(r, "Failed to parse confirm_spawn switch %s, ignoring: %m", value);
413 else
414 free_and_replace(arg_confirm_spawn, s);
601f6a1e 415
2a12e32e
JK		 416 } else if (proc_cmdline_key_streq(key, "systemd.service_watchdogs")) {
417
418 r = value ? parse_boolean(value) : true;
419 if (r < 0)
5e1ee764 420 log_warning_errno(r, "Failed to parse service watchdog switch %s, ignoring: %m", value);
2a12e32e
JK		 421 else
422 arg_service_watchdogs = r;
423
1d84ad94 424 } else if (proc_cmdline_key_streq(key, "systemd.show_status")) {
9e58ff9c 425
1d84ad94
LP		 426 if (value) {
427 r = parse_show_status(value, &arg_show_status);
428 if (r < 0)
5e1ee764 429 log_warning_errno(r, "Failed to parse show status switch %s, ignoring: %m", value);
1d84ad94
LP		 430 } else
431 arg_show_status = SHOW_STATUS_YES;
059cb385 432
1d84ad94
LP		 433 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_output")) {
434
435 if (proc_cmdline_value_missing(key, value))
436 return 0;
0a494f1f 437
059cb385 438 r = exec_output_from_string(value);
fb472900 439 if (r < 0)
5e1ee764 440 log_warning_errno(r, "Failed to parse default standard output switch %s, ignoring: %m", value);
0a494f1f
LP		 441 else
442 arg_default_std_output = r;
0a494f1f 443
1d84ad94
LP		 444 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_error")) {
445
446 if (proc_cmdline_value_missing(key, value))
447 return 0;
059cb385
LP		 448
449 r = exec_output_from_string(value);
fb472900 450 if (r < 0)
5e1ee764 451 log_warning_errno(r, "Failed to parse default standard error switch %s, ignoring: %m", value);
0a494f1f
LP		 452 else
453 arg_default_std_error = r;
9e7c5357 454
1d84ad94
LP		 455 } else if (streq(key, "systemd.setenv")) {
456
457 if (proc_cmdline_value_missing(key, value))
458 return 0;
059cb385
LP		 459
460 if (env_assignment_is_valid(value)) {
e21fea24
KS		 461 char **env;
462
059cb385 463 env = strv_env_set(arg_default_environment, value);
1d84ad94
LP		 464 if (!env)
465 return log_oom();
466
467 arg_default_environment = env;
e21fea24 468 } else
059cb385 469 log_warning("Environment variable name '%s' is not valid. Ignoring.", value);
9e58ff9c 470
1d84ad94
LP		 471 } else if (proc_cmdline_key_streq(key, "systemd.machine_id")) {
472
473 if (proc_cmdline_value_missing(key, value))
474 return 0;
475
476 r = set_machine_id(value);
477 if (r < 0)
5e1ee764 478 log_warning_errno(r, "MachineID '%s' is not valid, ignoring: %m", value);
ee48dbd5 479
1d84ad94
LP		 480 } else if (proc_cmdline_key_streq(key, "systemd.default_timeout_start_sec")) {
481
482 if (proc_cmdline_value_missing(key, value))
483 return 0;
484
485 r = parse_sec(value, &arg_default_timeout_start_usec);
486 if (r < 0)
5e1ee764 487 log_warning_errno(r, "Failed to parse default start timeout '%s', ignoring: %m", value);
1d84ad94
LP		 488
489 if (arg_default_timeout_start_usec <= 0)
490 arg_default_timeout_start_usec = USEC_INFINITY;
ee48dbd5 491
8a2c1fbf
EJ		 492 } else if (proc_cmdline_key_streq(key, "systemd.watchdog_device")) {
493
494 if (proc_cmdline_value_missing(key, value))
495 return 0;
496
c6885f5f 497 (void) parse_path_argument_and_warn(value, false, &arg_watchdog_device);
8a2c1fbf 498
059cb385 499 } else if (streq(key, "quiet") && !value) {
d7b15e0a 500
7a293242 501 if (arg_show_status == _SHOW_STATUS_INVALID)
d450b6f2 502 arg_show_status = SHOW_STATUS_AUTO;
059cb385
LP		 503
504 } else if (streq(key, "debug") && !value) {
d7b15e0a 505
1de1c9c3
LP		 506 /* Note that log_parse_environment() handles 'debug'
507 * too, and sets the log level to LOG_DEBUG. */
d7b15e0a 508
75f86906 509 if (detect_container() > 0)
b2103dcc 510 log_set_target(LOG_TARGET_CONSOLE);
059cb385 511
dcd61450 512 } else if (!value) {
e2c9a131 513 const char *target;
f170852a
LP		 514
515 /* SysV compatibility */
e2c9a131
EV		 516 target = runlevel_to_target(key);
517 if (target)
518 return free_and_strdup(&arg_default_unit, target);
f170852a
LP		 519 }
520
521 return 0;
522}
523
e8e581bf
ZJS		 524#define DEFINE_SETTER(name, func, descr) \
525 static int name(const char *unit, \
526 const char *filename, \
527 unsigned line, \
528 const char *section, \
71a61510 529 unsigned section_line, \
e8e581bf
ZJS		 530 const char *lvalue, \
531 int ltype, \
532 const char *rvalue, \
533 void *data, \
534 void *userdata) { \
535 \
536 int r; \
537 \
538 assert(filename); \
539 assert(lvalue); \
540 assert(rvalue); \
541 \
542 r = func(rvalue); \
543 if (r < 0) \
d1cefe0a
LP		 544 log_syntax(unit, LOG_ERR, filename, line, r, \
545 "Invalid " descr "'%s': %m", \
546 rvalue); \
e8e581bf
ZJS		 547 \
548 return 0; \
549 }
487393e9 550
a6ecbf83
FB		 551DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level");
552DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target");
553DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" );
554DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location");
487393e9 555
4d7213b2
LP		 556static int config_parse_cpu_affinity2(
557 const char *unit,
558 const char *filename,
559 unsigned line,
560 const char *section,
561 unsigned section_line,
562 const char *lvalue,
563 int ltype,
564 const char *rvalue,
565 void *data,
566 void *userdata) {
487393e9 567
4b40bc38 568 _cleanup_cpu_free_ cpu_set_t *c = NULL;
f5c72b73 569 int ncpus;
487393e9 570
765d143b 571 ncpus = parse_cpu_set_and_warn(rvalue, &c, unit, filename, line, lvalue);
f5c72b73
FB		 572 if (ncpus < 0)
573 return ncpus;
487393e9 574
f5c72b73 575 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
25f027c5 576 log_warning_errno(errno, "Failed to set CPU affinity: %m");
487393e9 577
487393e9
LP		 578 return 0;
579}
580
4d7213b2
LP		 581static int config_parse_show_status(
582 const char* unit,
583 const char *filename,
584 unsigned line,
585 const char *section,
586 unsigned section_line,
587 const char *lvalue,
588 int ltype,
589 const char *rvalue,
590 void *data,
591 void *userdata) {
592
593 int k;
594 ShowStatus *b = data;
595
596 assert(filename);
597 assert(lvalue);
598 assert(rvalue);
599 assert(data);
600
601 k = parse_show_status(rvalue, b);
602 if (k < 0) {
12ca818f 603 log_syntax(unit, LOG_ERR, filename, line, k, "Failed to parse show status setting, ignoring: %s", rvalue);
4d7213b2
LP		 604 return 0;
605 }
606
607 return 0;
608}
609
5db98187
LP		 610static int config_parse_output_restricted(
611 const char* unit,
612 const char *filename,
613 unsigned line,
614 const char *section,
615 unsigned section_line,
616 const char *lvalue,
617 int ltype,
618 const char *rvalue,
619 void *data,
620 void *userdata) {
621
622 ExecOutput t, *eo = data;
623
624 assert(filename);
625 assert(lvalue);
626 assert(rvalue);
627 assert(data);
628
629 t = exec_output_from_string(rvalue);
630 if (t < 0) {
631 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse output type, ignoring: %s", rvalue);
632 return 0;
633 }
634
566b7d23
ZD		 635 if (IN_SET(t, EXEC_OUTPUT_SOCKET, EXEC_OUTPUT_NAMED_FD, EXEC_OUTPUT_FILE, EXEC_OUTPUT_FILE_APPEND)) {
636 log_syntax(unit, LOG_ERR, filename, line, 0, "Standard output types socket, fd:, file:, append: are not supported as defaults, ignoring: %s", rvalue);
5db98187
LP		 637 return 0;
638 }
639
640 *eo = t;
641 return 0;
642}
643
b9e74c39
LP		 644static int config_parse_crash_chvt(
645 const char* unit,
646 const char *filename,
647 unsigned line,
648 const char *section,
649 unsigned section_line,
650 const char *lvalue,
651 int ltype,
652 const char *rvalue,
653 void *data,
654 void *userdata) {
655
656 int r;
657
658 assert(filename);
659 assert(lvalue);
660 assert(rvalue);
b9e74c39
LP		 661
662 r = parse_crash_chvt(rvalue);
663 if (r < 0) {
664 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue);
665 return 0;
666 }
667
668 return 0;
669}
670
487393e9
LP		 671static int parse_config_file(void) {
672
f975e971 673 const ConfigTableItem items[] = {
d3b1c508
LP		 674 { "Manager", "LogLevel", config_parse_level2, 0, NULL },
675 { "Manager", "LogTarget", config_parse_target, 0, NULL },
676 { "Manager", "LogColor", config_parse_color, 0, NULL },
677 { "Manager", "LogLocation", config_parse_location, 0, NULL },
678 { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
b9e74c39
LP		 679 { "Manager", "CrashChVT", /* legacy */ config_parse_crash_chvt, 0, NULL },
680 { "Manager", "CrashChangeVT", config_parse_crash_chvt, 0, NULL },
d3b1c508 681 { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
b9e74c39 682 { "Manager", "CrashReboot", config_parse_bool, 0, &arg_crash_reboot },
d3b1c508 683 { "Manager", "ShowStatus", config_parse_show_status, 0, &arg_show_status },
d3b1c508 684 { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
143fadf3 685 { "Manager", "JoinControllers", config_parse_warn_compat, DISABLED_CONFIGURATION, NULL },
d3b1c508
LP		 686 { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog },
687 { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog },
8a2c1fbf 688 { "Manager", "WatchdogDevice", config_parse_path, 0, &arg_watchdog_device },
a103496c 689 { "Manager", "CapabilityBoundingSet", config_parse_capability_set, 0, &arg_capability_bounding_set },
39362f6f 690 { "Manager", "NoNewPrivileges", config_parse_bool, 0, &arg_no_new_privs },
349cc4a5 691#if HAVE_SECCOMP
d3b1c508 692 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs, 0, &arg_syscall_archs },
89fffa27 693#endif
d3b1c508 694 { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
bd8f585b 695 { "Manager", "DefaultTimerAccuracySec", config_parse_sec, 0, &arg_default_timer_accuracy_usec },
5db98187
LP		 696 { "Manager", "DefaultStandardOutput", config_parse_output_restricted,0, &arg_default_std_output },
697 { "Manager", "DefaultStandardError", config_parse_output_restricted,0, &arg_default_std_error },
d3b1c508
LP		 698 { "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_default_timeout_start_usec },
699 { "Manager", "DefaultTimeoutStopSec", config_parse_sec, 0, &arg_default_timeout_stop_usec },
700 { "Manager", "DefaultRestartSec", config_parse_sec, 0, &arg_default_restart_usec },
f0367da7
LP		 701 { "Manager", "DefaultStartLimitInterval", config_parse_sec, 0, &arg_default_start_limit_interval }, /* obsolete alias */
702 { "Manager", "DefaultStartLimitIntervalSec",config_parse_sec, 0, &arg_default_start_limit_interval },
d3b1c508
LP		 703 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_default_start_limit_burst },
704 { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
4f424df7
LP		 705 { "Manager", "DefaultLimitCPU", config_parse_rlimit, RLIMIT_CPU, arg_default_rlimit },
706 { "Manager", "DefaultLimitFSIZE", config_parse_rlimit, RLIMIT_FSIZE, arg_default_rlimit },
707 { "Manager", "DefaultLimitDATA", config_parse_rlimit, RLIMIT_DATA, arg_default_rlimit },
708 { "Manager", "DefaultLimitSTACK", config_parse_rlimit, RLIMIT_STACK, arg_default_rlimit },
709 { "Manager", "DefaultLimitCORE", config_parse_rlimit, RLIMIT_CORE, arg_default_rlimit },
710 { "Manager", "DefaultLimitRSS", config_parse_rlimit, RLIMIT_RSS, arg_default_rlimit },
711 { "Manager", "DefaultLimitNOFILE", config_parse_rlimit, RLIMIT_NOFILE, arg_default_rlimit },
712 { "Manager", "DefaultLimitAS", config_parse_rlimit, RLIMIT_AS, arg_default_rlimit },
713 { "Manager", "DefaultLimitNPROC", config_parse_rlimit, RLIMIT_NPROC, arg_default_rlimit },
714 { "Manager", "DefaultLimitMEMLOCK", config_parse_rlimit, RLIMIT_MEMLOCK, arg_default_rlimit },
715 { "Manager", "DefaultLimitLOCKS", config_parse_rlimit, RLIMIT_LOCKS, arg_default_rlimit },
716 { "Manager", "DefaultLimitSIGPENDING", config_parse_rlimit, RLIMIT_SIGPENDING, arg_default_rlimit },
717 { "Manager", "DefaultLimitMSGQUEUE", config_parse_rlimit, RLIMIT_MSGQUEUE, arg_default_rlimit },
718 { "Manager", "DefaultLimitNICE", config_parse_rlimit, RLIMIT_NICE, arg_default_rlimit },
719 { "Manager", "DefaultLimitRTPRIO", config_parse_rlimit, RLIMIT_RTPRIO, arg_default_rlimit },
720 { "Manager", "DefaultLimitRTTIME", config_parse_rlimit, RLIMIT_RTTIME, arg_default_rlimit },
a88c5b8a 721 { "Manager", "DefaultCPUAccounting", config_parse_tristate, 0, &arg_default_cpu_accounting },
13c31542 722 { "Manager", "DefaultIOAccounting", config_parse_bool, 0, &arg_default_io_accounting },
377bfd2d 723 { "Manager", "DefaultIPAccounting", config_parse_bool, 0, &arg_default_ip_accounting },
085afe36
LP		 724 { "Manager", "DefaultBlockIOAccounting", config_parse_bool, 0, &arg_default_blockio_accounting },
725 { "Manager", "DefaultMemoryAccounting", config_parse_bool, 0, &arg_default_memory_accounting },
03a7b521 726 { "Manager", "DefaultTasksAccounting", config_parse_bool, 0, &arg_default_tasks_accounting },
0af20ea2 727 { "Manager", "DefaultTasksMax", config_parse_tasks_max, 0, &arg_default_tasks_max },
ae8c7939 728 { "Manager", "CtrlAltDelBurstAction", config_parse_emergency_action, 0, &arg_cad_burst_action },
afcfaa69 729 { "Manager", "DefaultOOMPolicy", config_parse_oom_policy, 0, &arg_default_oom_policy },
d3b1c508 730 {}
487393e9
LP		 731 };
732
1b907b5c 733 const char *fn, *conf_dirs_nulstr;
487393e9 734
463d0d15 735 fn = arg_system ?
75eb6154
LP		 736 PKGSYSCONFDIR "/system.conf" :
737 PKGSYSCONFDIR "/user.conf";
738
463d0d15 739 conf_dirs_nulstr = arg_system ?
75eb6154
LP		 740 CONF_PATHS_NULSTR("systemd/system.conf.d") :
741 CONF_PATHS_NULSTR("systemd/user.conf.d");
742
bcde742e 743 (void) config_parse_many_nulstr(fn, conf_dirs_nulstr, "Manager\0", config_item_table_lookup, items, CONFIG_PARSE_WARN, NULL);
36c16a7c
LP		 744
745 /* Traditionally "0" was used to turn off the default unit timeouts. Fix this up so that we used USEC_INFINITY
746 * like everywhere else. */
747 if (arg_default_timeout_start_usec <= 0)
748 arg_default_timeout_start_usec = USEC_INFINITY;
749 if (arg_default_timeout_stop_usec <= 0)
750 arg_default_timeout_stop_usec = USEC_INFINITY;
487393e9 751
487393e9
LP		 752 return 0;
753}
754
85cb4151 755static void set_manager_defaults(Manager *m) {
06af2a04
TB		 756
757 assert(m);
758
5b65ae15
LP		 759 /* Propagates the various default unit property settings into the manager object, i.e. properties that do not
760 * affect the manager itself, but are just what newly allocated units will have set if they haven't set
761 * anything else. (Also see set_manager_settings() for the settings that affect the manager's own behaviour) */
762
06af2a04
TB		 763 m->default_timer_accuracy_usec = arg_default_timer_accuracy_usec;
764 m->default_std_output = arg_default_std_output;
765 m->default_std_error = arg_default_std_error;
766 m->default_timeout_start_usec = arg_default_timeout_start_usec;
767 m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
768 m->default_restart_usec = arg_default_restart_usec;
769 m->default_start_limit_interval = arg_default_start_limit_interval;
770 m->default_start_limit_burst = arg_default_start_limit_burst;
a88c5b8a
CD		 771
772 /* On 4.15+ with unified hierarchy, CPU accounting is essentially free as it doesn't require the CPU
773 * controller to be enabled, so the default is to enable it unless we got told otherwise. */
774 if (arg_default_cpu_accounting >= 0)
775 m->default_cpu_accounting = arg_default_cpu_accounting;
776 else
777 m->default_cpu_accounting = cpu_accounting_is_cheap();
778
13c31542 779 m->default_io_accounting = arg_default_io_accounting;
377bfd2d 780 m->default_ip_accounting = arg_default_ip_accounting;
06af2a04
TB		 781 m->default_blockio_accounting = arg_default_blockio_accounting;
782 m->default_memory_accounting = arg_default_memory_accounting;
03a7b521 783 m->default_tasks_accounting = arg_default_tasks_accounting;
0af20ea2 784 m->default_tasks_max = arg_default_tasks_max;
afcfaa69 785 m->default_oom_policy = arg_default_oom_policy;
06af2a04 786
79a224c4
LP		 787 (void) manager_set_default_rlimits(m, arg_default_rlimit);
788
789 (void) manager_default_environment(m);
790 (void) manager_transient_environment_add(m, arg_default_environment);
06af2a04
TB		 791}
792
7b46fc6a
LP		 793static void set_manager_settings(Manager *m) {
794
795 assert(m);
796
5b65ae15
LP		 797 /* Propagates the various manager settings into the manager object, i.e. properties that effect the manager
798 * itself (as opposed to just being inherited into newly allocated units, see set_manager_defaults() above). */
799
7b46fc6a 800 m->confirm_spawn = arg_confirm_spawn;
2a12e32e 801 m->service_watchdogs = arg_service_watchdogs;
7b46fc6a
LP		 802 m->runtime_watchdog = arg_runtime_watchdog;
803 m->shutdown_watchdog = arg_shutdown_watchdog;
804 m->cad_burst_action = arg_cad_burst_action;
805
806 manager_set_show_status(m, arg_show_status);
807}
808
f170852a 809static int parse_argv(int argc, char *argv[]) {
f170852a
LP		 810 enum {
811 ARG_LOG_LEVEL = 0x100,
812 ARG_LOG_TARGET,
bbe63281
LP		 813 ARG_LOG_COLOR,
814 ARG_LOG_LOCATION,
2f198e2f 815 ARG_UNIT,
edb9aaa8 816 ARG_SYSTEM,
af2d49f7 817 ARG_USER,
e537352b 818 ARG_TEST,
b87c2aa6 819 ARG_NO_PAGER,
9ba0bc4e 820 ARG_VERSION,
80876c20 821 ARG_DUMP_CONFIGURATION_ITEMS,
bbc1acab 822 ARG_DUMP_BUS_PROPERTIES,
9e58ff9c 823 ARG_DUMP_CORE,
b9e74c39 824 ARG_CRASH_CHVT,
9e58ff9c 825 ARG_CRASH_SHELL,
b9e74c39 826 ARG_CRASH_REBOOT,
a16e1123 827 ARG_CONFIRM_SPAWN,
9e58ff9c 828 ARG_SHOW_STATUS,
4288f619 829 ARG_DESERIALIZE,
2660882b 830 ARG_SWITCHED_ROOT,
0a494f1f 831 ARG_DEFAULT_STD_OUTPUT,
ee48dbd5 832 ARG_DEFAULT_STD_ERROR,
2a12e32e
JK		 833 ARG_MACHINE_ID,
834 ARG_SERVICE_WATCHDOGS,
f170852a
LP		 835 };
836
837 static const struct option options[] = {
a16e1123
LP		 838 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
839 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
bbe63281
LP		 840 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
841 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
2f198e2f 842 { "unit", required_argument, NULL, ARG_UNIT },
edb9aaa8 843 { "system", no_argument, NULL, ARG_SYSTEM },
af2d49f7 844 { "user", no_argument, NULL, ARG_USER },
a16e1123 845 { "test", no_argument, NULL, ARG_TEST },
b87c2aa6 846 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
a16e1123 847 { "help", no_argument, NULL, 'h' },
9ba0bc4e 848 { "version", no_argument, NULL, ARG_VERSION },
a16e1123 849 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
bbc1acab 850 { "dump-bus-properties", no_argument, NULL, ARG_DUMP_BUS_PROPERTIES },
a5d87bf0 851 { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
b9e74c39 852 { "crash-chvt", required_argument, NULL, ARG_CRASH_CHVT },
a5d87bf0 853 { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
b9e74c39 854 { "crash-reboot", optional_argument, NULL, ARG_CRASH_REBOOT },
a5d87bf0 855 { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
6e98720f 856 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
a16e1123 857 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
2660882b 858 { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
0a494f1f
LP		 859 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
860 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
ee48dbd5 861 { "machine-id", required_argument, NULL, ARG_MACHINE_ID },
2a12e32e 862 { "service-watchdogs", required_argument, NULL, ARG_SERVICE_WATCHDOGS },
fb472900 863 {}
f170852a
LP		 864 };
865
866 int c, r;
867
868 assert(argc >= 1);
869 assert(argv);
870
df0ff127 871 if (getpid_cached() == 1)
b770165a
LP		 872 opterr = 0;
873
099663ff 874 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
f170852a
LP		 875
876 switch (c) {
877
878 case ARG_LOG_LEVEL:
fb472900 879 r = log_set_max_level_from_string(optarg);
2b5107e1
ZJS		 880 if (r < 0)
881 return log_error_errno(r, "Failed to parse log level \"%s\": %m", optarg);
f170852a
LP		 882
883 break;
884
885 case ARG_LOG_TARGET:
fb472900 886 r = log_set_target_from_string(optarg);
2b5107e1
ZJS		 887 if (r < 0)
888 return log_error_errno(r, "Failed to parse log target \"%s\": %m", optarg);
f170852a
LP		 889
890 break;
891
bbe63281
LP		 892 case ARG_LOG_COLOR:
893
d0b170c8 894 if (optarg) {
fb472900 895 r = log_show_color_from_string(optarg);
2b5107e1
ZJS		 896 if (r < 0)
897 return log_error_errno(r, "Failed to parse log color setting \"%s\": %m",
898 optarg);
d0b170c8
LP		 899 } else
900 log_show_color(true);
bbe63281
LP		 901
902 break;
903
904 case ARG_LOG_LOCATION:
d0b170c8 905 if (optarg) {
fb472900 906 r = log_show_location_from_string(optarg);
2b5107e1
ZJS		 907 if (r < 0)
908 return log_error_errno(r, "Failed to parse log location setting \"%s\": %m",
909 optarg);
d0b170c8
LP		 910 } else
911 log_show_location(true);
bbe63281
LP		 912
913 break;
914
0a494f1f 915 case ARG_DEFAULT_STD_OUTPUT:
fb472900 916 r = exec_output_from_string(optarg);
2b5107e1
ZJS		 917 if (r < 0)
918 return log_error_errno(r, "Failed to parse default standard output setting \"%s\": %m",
919 optarg);
920 arg_default_std_output = r;
0a494f1f
LP		 921 break;
922
923 case ARG_DEFAULT_STD_ERROR:
fb472900 924 r = exec_output_from_string(optarg);
2b5107e1
ZJS		 925 if (r < 0)
926 return log_error_errno(r, "Failed to parse default standard error output setting \"%s\": %m",
927 optarg);
928 arg_default_std_error = r;
0a494f1f
LP		 929 break;
930
2f198e2f 931 case ARG_UNIT:
e6e242ad 932 r = free_and_strdup(&arg_default_unit, optarg);
23bbb0de 933 if (r < 0)
2b5107e1 934 return log_error_errno(r, "Failed to set default unit \"%s\": %m", optarg);
f170852a
LP		 935
936 break;
937
edb9aaa8 938 case ARG_SYSTEM:
463d0d15 939 arg_system = true;
edb9aaa8 940 break;
a5dab5ce 941
af2d49f7 942 case ARG_USER:
463d0d15 943 arg_system = false;
a5dab5ce 944 break;
a5dab5ce 945
e965d56d 946 case ARG_TEST:
fa0f4d8a 947 arg_action = ACTION_TEST;
b87c2aa6
ZJS		 948 break;
949
950 case ARG_NO_PAGER:
0221d68a 951 arg_pager_flags |= PAGER_DISABLE;
e965d56d
LP		 952 break;
953
9ba0bc4e
ZJS		 954 case ARG_VERSION:
955 arg_action = ACTION_VERSION;
956 break;
957
e537352b 958 case ARG_DUMP_CONFIGURATION_ITEMS:
fa0f4d8a 959 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
e537352b
LP		 960 break;
961
bbc1acab
YW		 962 case ARG_DUMP_BUS_PROPERTIES:
963 arg_action = ACTION_DUMP_BUS_PROPERTIES;
964 break;
965
9e58ff9c 966 case ARG_DUMP_CORE:
b9e74c39
LP		 967 if (!optarg)
968 arg_dump_core = true;
969 else {
970 r = parse_boolean(optarg);
971 if (r < 0)
2b5107e1
ZJS		 972 return log_error_errno(r, "Failed to parse dump core boolean: \"%s\": %m",
973 optarg);
b9e74c39 974 arg_dump_core = r;
a5d87bf0 975 }
b9e74c39
LP		 976 break;
977
978 case ARG_CRASH_CHVT:
979 r = parse_crash_chvt(optarg);
980 if (r < 0)
2b5107e1
ZJS		 981 return log_error_errno(r, "Failed to parse crash virtual terminal index: \"%s\": %m",
982 optarg);
9e58ff9c
LP		 983 break;
984
985 case ARG_CRASH_SHELL:
b9e74c39
LP		 986 if (!optarg)
987 arg_crash_shell = true;
988 else {
989 r = parse_boolean(optarg);
990 if (r < 0)
2b5107e1
ZJS		 991 return log_error_errno(r, "Failed to parse crash shell boolean: \"%s\": %m",
992 optarg);
b9e74c39
LP		 993 arg_crash_shell = r;
994 }
995 break;
996
997 case ARG_CRASH_REBOOT:
998 if (!optarg)
999 arg_crash_reboot = true;
1000 else {
1001 r = parse_boolean(optarg);
1002 if (r < 0)
2b5107e1
ZJS		 1003 return log_error_errno(r, "Failed to parse crash shell boolean: \"%s\": %m",
1004 optarg);
b9e74c39 1005 arg_crash_reboot = r;
a5d87bf0 1006 }
9e58ff9c
LP		 1007 break;
1008
80876c20 1009 case ARG_CONFIRM_SPAWN:
7d5ceb64
FB		 1010 arg_confirm_spawn = mfree(arg_confirm_spawn);
1011
1012 r = parse_confirm_spawn(optarg, &arg_confirm_spawn);
1013 if (r < 0)
2b5107e1
ZJS		 1014 return log_error_errno(r, "Failed to parse confirm spawn option: \"%s\": %m",
1015 optarg);
80876c20
LP		 1016 break;
1017
2a12e32e
JK		 1018 case ARG_SERVICE_WATCHDOGS:
1019 r = parse_boolean(optarg);
1020 if (r < 0)
2b5107e1
ZJS		 1021 return log_error_errno(r, "Failed to parse service watchdogs boolean: \"%s\": %m",
1022 optarg);
2a12e32e
JK		 1023 arg_service_watchdogs = r;
1024 break;
1025
9e58ff9c 1026 case ARG_SHOW_STATUS:
d450b6f2
ZJS		 1027 if (optarg) {
1028 r = parse_show_status(optarg, &arg_show_status);
ac7ec288 1029 if (r < 0)
2b5107e1
ZJS		 1030 return log_error_errno(r, "Failed to parse show status boolean: \"%s\": %m",
1031 optarg);
d450b6f2
ZJS		 1032 } else
1033 arg_show_status = SHOW_STATUS_YES;
6e98720f 1034 break;
a5d87bf0 1035
a16e1123
LP		 1036 case ARG_DESERIALIZE: {
1037 int fd;
1038 FILE *f;
1039
01e10de3 1040 r = safe_atoi(optarg, &fd);
2b5107e1
ZJS		 1041 if (r < 0)
1042 log_error_errno(r, "Failed to parse deserialize option \"%s\": %m", optarg);
baaa35ad
ZJS		 1043 if (fd < 0)
1044 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1045 "Invalid deserialize fd: %d",
1046 fd);
a16e1123 1047
b9e74c39 1048 (void) fd_cloexec(fd, true);
01e10de3
LP		 1049
1050 f = fdopen(fd, "r");
4a62c710 1051 if (!f)
2b5107e1 1052 return log_error_errno(errno, "Failed to open serialization fd %d: %m", fd);
a16e1123 1053
74ca738f 1054 safe_fclose(arg_serialization);
d3b1c508 1055 arg_serialization = f;
a16e1123
LP		 1056
1057 break;
1058 }
1059
2660882b 1060 case ARG_SWITCHED_ROOT:
bf4df7c3 1061 arg_switched_root = true;
d03bc1b8
HH		 1062 break;
1063
ee48dbd5
NC		 1064 case ARG_MACHINE_ID:
1065 r = set_machine_id(optarg);
54500613 1066 if (r < 0)
2b5107e1 1067 return log_error_errno(r, "MachineID '%s' is not valid: %m", optarg);
ee48dbd5
NC		 1068 break;
1069
f170852a 1070 case 'h':
fa0f4d8a 1071 arg_action = ACTION_HELP;
f170852a
LP		 1072 break;
1073
1d2e23ab
LP		 1074 case 'D':
1075 log_set_max_level(LOG_DEBUG);
1076 break;
1077
099663ff
LP		 1078 case 'b':
1079 case 's':
1080 case 'z':
1081 /* Just to eat away the sysvinit kernel
1082 * cmdline args without getopt() error
1083 * messages that we'll parse in
1084 * parse_proc_cmdline_word() or ignore. */
f170852a 1085
099663ff 1086 case '?':
df0ff127 1087 if (getpid_cached() != 1)
099663ff 1088 return -EINVAL;
601185b4
ZJS		 1089 else
1090 return 0;
099663ff 1091
601185b4
ZJS		 1092 default:
1093 assert_not_reached("Unhandled option code.");
f170852a
LP		 1094 }
1095
df0ff127 1096 if (optind < argc && getpid_cached() != 1) {
d821e6d6
LP		 1097 /* Hmm, when we aren't run as init system
1098 * let's complain about excess arguments */
1099
baaa35ad
ZJS		 1100 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1101 "Excess arguments.");
d821e6d6
LP		 1102 }
1103
f170852a
LP		 1104 return 0;
1105}
1106
1107static int help(void) {
37ec0fdd
LP		 1108 _cleanup_free_ char *link = NULL;
1109 int r;
1110
1111 r = terminal_urlify_man("systemd", "1", &link);
1112 if (r < 0)
1113 return log_oom();
f170852a 1114
2e33c433 1115 printf("%s [OPTIONS...]\n\n"
af2d49f7 1116 "Starts up and maintains the system or user services.\n\n"
e537352b 1117 " -h --help Show this help\n"
cb4069d9 1118 " --version Show version\n"
e537352b 1119 " --test Determine startup sequence, dump it and exit\n"
b87c2aa6 1120 " --no-pager Do not pipe output into a pager\n"
80876c20 1121 " --dump-configuration-items Dump understood unit configuration items\n"
bbc1acab 1122 " --dump-bus-properties Dump exposed bus properties\n"
9e58ff9c 1123 " --unit=UNIT Set default unit\n"
edb9aaa8 1124 " --system Run a system instance, even if PID != 1\n"
af2d49f7 1125 " --user Run a user instance\n"
b9e74c39
LP		 1126 " --dump-core[=BOOL] Dump core on crash\n"
1127 " --crash-vt=NR Change to specified VT on crash\n"
1128 " --crash-reboot[=BOOL] Reboot on crash\n"
1129 " --crash-shell[=BOOL] Run shell on crash\n"
1130 " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n"
1131 " --show-status[=BOOL] Show status updates on the console during bootup\n"
c1dc6153 1132 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
9e58ff9c 1133 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
b9e74c39
LP		 1134 " --log-color[=BOOL] Highlight important log messages\n"
1135 " --log-location[=BOOL] Include code location in log messages\n"
0a494f1f 1136 " --default-standard-output= Set default standard output for services\n"
37ec0fdd
LP		 1137 " --default-standard-error= Set default standard error output for services\n"
1138 "\nSee the %s for details.\n"
1139 , program_invocation_short_name
1140 , link
1141 );
f170852a
LP		 1142
1143 return 0;
1144}
1145
2cc856ac
LP		 1146static int prepare_reexecute(
1147 Manager *m,
1148 FILE **ret_f,
1149 FDSet **ret_fds,
1150 bool switching_root) {
1151
48b90859
LP		 1152 _cleanup_fdset_free_ FDSet *fds = NULL;
1153 _cleanup_fclose_ FILE *f = NULL;
a16e1123
LP		 1154 int r;
1155
1156 assert(m);
2cc856ac
LP		 1157 assert(ret_f);
1158 assert(ret_fds);
a16e1123 1159
6b78f9b4 1160 r = manager_open_serialization(m, &f);
48b90859
LP		 1161 if (r < 0)
1162 return log_error_errno(r, "Failed to create serialization file: %m");
a16e1123 1163
71445ae7 1164 /* Make sure nothing is really destructed when we shut down */
313cefa1 1165 m->n_reloading++;
718db961 1166 bus_manager_send_reloading(m, true);
71445ae7 1167
6b78f9b4 1168 fds = fdset_new();
48b90859
LP		 1169 if (!fds)
1170 return log_oom();
a16e1123 1171
b3680f49 1172 r = manager_serialize(m, f, fds, switching_root);
48b90859 1173 if (r < 0)
d68c645b 1174 return r;
a16e1123 1175
48b90859
LP		 1176 if (fseeko(f, 0, SEEK_SET) == (off_t) -1)
1177 return log_error_errno(errno, "Failed to rewind serialization fd: %m");
a16e1123 1178
6b78f9b4 1179 r = fd_cloexec(fileno(f), false);
48b90859
LP		 1180 if (r < 0)
1181 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m");
a16e1123 1182
6b78f9b4 1183 r = fdset_cloexec(fds, false);
48b90859
LP		 1184 if (r < 0)
1185 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m");
a16e1123 1186
2cc856ac
LP		 1187 *ret_f = TAKE_PTR(f);
1188 *ret_fds = TAKE_PTR(fds);
a16e1123 1189
48b90859 1190 return 0;
a16e1123
LP		 1191}
1192
a8b627aa
LP		 1193static void bump_file_max_and_nr_open(void) {
1194
1195 /* Let's bump fs.file-max and fs.nr_open to their respective maximums. On current kernels large numbers of file
1196 * descriptors are no longer a performance problem and their memory is properly tracked by memcg, thus counting
1197 * them and limiting them in another two layers of limits is unnecessary and just complicates things. This
1198 * function hence turns off 2 of the 4 levels of limits on file descriptors, and makes RLIMIT_NOLIMIT (soft +
1199 * hard) the only ones that really matter. */
1200
1201#if BUMP_PROC_SYS_FS_FILE_MAX || BUMP_PROC_SYS_FS_NR_OPEN
1202 _cleanup_free_ char *t = NULL;
1203 int r;
1204#endif
1205
1206#if BUMP_PROC_SYS_FS_FILE_MAX
1207 /* I so wanted to use STRINGIFY(ULONG_MAX) here, but alas we can't as glibc/gcc define that as
1208 * "(0x7fffffffffffffffL * 2UL + 1UL)". Seriously. 😢 */
1209 if (asprintf(&t, "%lu\n", ULONG_MAX) < 0) {
1210 log_oom();
1211 return;
1212 }
1213
1214 r = sysctl_write("fs/file-max", t);
1215 if (r < 0)
1216 log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r, "Failed to bump fs.file-max, ignoring: %m");
1217#endif
1218
1219#if BUMP_PROC_SYS_FS_FILE_MAX && BUMP_PROC_SYS_FS_NR_OPEN
1220 t = mfree(t);
1221#endif
1222
1223#if BUMP_PROC_SYS_FS_NR_OPEN
1224 int v = INT_MAX;
1225
1226 /* Arg! The kernel enforces maximum and minimum values on the fs.nr_open, but we don't really know what they
1227 * are. The expression by which the maximum is determined is dependent on the architecture, and is something we
1228 * don't really want to copy to userspace, as it is dependent on implementation details of the kernel. Since
1229 * the kernel doesn't expose the maximum value to us, we can only try and hope. Hence, let's start with
1230 * INT_MAX, and then keep halving the value until we find one that works. Ugly? Yes, absolutely, but kernel
1231 * APIs are kernel APIs, so what do can we do... 🤯 */
1232
1233 for (;;) {
1234 int k;
1235
1236 v &= ~(__SIZEOF_POINTER__ - 1); /* Round down to next multiple of the pointer size */
1237 if (v < 1024) {
1238 log_warning("Can't bump fs.nr_open, value too small.");
1239 break;
1240 }
1241
1242 k = read_nr_open();
1243 if (k < 0) {
1244 log_error_errno(k, "Failed to read fs.nr_open: %m");
1245 break;
1246 }
1247 if (k >= v) { /* Already larger */
1248 log_debug("Skipping bump, value is already larger.");
1249 break;
1250 }
1251
1252 if (asprintf(&t, "%i\n", v) < 0) {
1253 log_oom();
1254 return;
1255 }
1256
1257 r = sysctl_write("fs/nr_open", t);
1258 t = mfree(t);
1259 if (r == -EINVAL) {
1260 log_debug("Couldn't write fs.nr_open as %i, halving it.", v);
1261 v /= 2;
1262 continue;
1263 }
1264 if (r < 0) {
1265 log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r, "Failed to bump fs.nr_open, ignoring: %m");
1266 break;
1267 }
1268
1269 log_debug("Successfully bumped fs.nr_open to %i", v);
1270 break;
1271 }
1272#endif
1273}
1274
4096d6f5 1275static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
cda7faa9 1276 struct rlimit new_rlimit;
9264cc39 1277 int r, nr;
4096d6f5
LP		 1278
1279 assert(saved_rlimit);
1280
52d62075 1281 /* Save the original RLIMIT_NOFILE so that we can reset it later when transitioning from the initrd to the main
4096d6f5 1282 * systemd or suchlike. */
4a62c710 1283 if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0)
3ce40911 1284 return log_warning_errno(errno, "Reading RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5 1285
52d62075
LP		 1286 /* Get the underlying absolute limit the kernel enforces */
1287 nr = read_nr_open();
1288
1289 /* Make sure forked processes get limits based on the original kernel setting */
4096d6f5
LP		 1290 if (!arg_default_rlimit[RLIMIT_NOFILE]) {
1291 struct rlimit *rl;
1292
1293 rl = newdup(struct rlimit, saved_rlimit, 1);
1294 if (!rl)
1295 return log_oom();
1296
52d62075
LP		 1297 /* Bump the hard limit for system services to a substantially higher value. The default hard limit
1298 * current kernels set is pretty low (4K), mostly for historical reasons. According to kernel
1299 * developers, the fd handling in recent kernels has been optimized substantially enough, so that we
1300 * can bump the limit now, without paying too high a price in memory or performance. Note however that
1301 * we only bump the hard limit, not the soft limit. That's because select() works the way it works, and
1302 * chokes on fds >= 1024. If we'd bump the soft limit globally, it might accidentally happen to
1303 * unexpecting programs that they get fds higher than what they can process using select(). By only
1304 * bumping the hard limit but leaving the low limit as it is we avoid this pitfall: programs that are
1305 * written by folks aware of the select() problem in mind (and thus use poll()/epoll instead of
1306 * select(), the way everybody should) can explicitly opt into high fds by bumping their soft limit
1307 * beyond 1024, to the hard limit we pass. */
1308 if (arg_system)
1309 rl->rlim_max = MIN((rlim_t) nr, MAX(rl->rlim_max, (rlim_t) HIGH_RLIMIT_NOFILE));
1310
99a2fd3b
LP		 1311 /* If for some reason we were invoked with a soft limit above 1024 (which should never
1312 * happen!, but who knows what we get passed in from pam_limit when invoked as --user
1313 * instance), then lower what we pass on to not confuse our children */
1314 rl->rlim_cur = MIN(rl->rlim_cur, (rlim_t) FD_SETSIZE);
1315
4096d6f5
LP		 1316 arg_default_rlimit[RLIMIT_NOFILE] = rl;
1317 }
1318
cda7faa9
LP		 1319 /* Calculate the new limits to use for us. Never lower from what we inherited. */
1320 new_rlimit = (struct rlimit) {
1321 .rlim_cur = MAX((rlim_t) nr, saved_rlimit->rlim_cur),
1322 .rlim_max = MAX((rlim_t) nr, saved_rlimit->rlim_max),
1323 };
1324
1325 /* Shortcut if nothing changes. */
1326 if (saved_rlimit->rlim_max >= new_rlimit.rlim_max &&
1327 saved_rlimit->rlim_cur >= new_rlimit.rlim_cur) {
1328 log_debug("RLIMIT_NOFILE is already as high or higher than we need it, not bumping.");
1329 return 0;
1330 }
1331
52d62075
LP		 1332 /* Bump up the resource limit for ourselves substantially, all the way to the maximum the kernel allows, for
1333 * both hard and soft. */
cda7faa9 1334 r = setrlimit_closest(RLIMIT_NOFILE, &new_rlimit);
23bbb0de 1335 if (r < 0)
3ce40911 1336 return log_warning_errno(r, "Setting RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5
LP		 1337
1338 return 0;
1339}
1340
fb3ae275 1341static int bump_rlimit_memlock(struct rlimit *saved_rlimit) {
cda7faa9 1342 struct rlimit new_rlimit;
fb3ae275
LP		 1343 int r;
1344
1345 assert(saved_rlimit);
fb3ae275 1346
a17c1712
LP		 1347 /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even if we have CAP_IPC_LOCK which should
1348 * normally disable such checks. We need them to implement IPAccessAllow= and IPAccessDeny=, hence let's bump
1349 * the value high enough for our user. */
fb3ae275
LP		 1350
1351 if (getrlimit(RLIMIT_MEMLOCK, saved_rlimit) < 0)
1352 return log_warning_errno(errno, "Reading RLIMIT_MEMLOCK failed, ignoring: %m");
1353
c0d76959
LP		 1354 /* Pass the original value down to invoked processes */
1355 if (!arg_default_rlimit[RLIMIT_MEMLOCK]) {
1356 struct rlimit *rl;
1357
1358 rl = newdup(struct rlimit, saved_rlimit, 1);
1359 if (!rl)
1360 return log_oom();
1361
1362 arg_default_rlimit[RLIMIT_MEMLOCK] = rl;
1363 }
1364
cda7faa9
LP		 1365 /* Using MAX() on resource limits only is safe if RLIM_INFINITY is > 0. POSIX declares that rlim_t
1366 * must be unsigned, hence this is a given, but let's make this clear here. */
1367 assert_cc(RLIM_INFINITY > 0);
1368
1369 new_rlimit = (struct rlimit) {
1370 .rlim_cur = MAX(HIGH_RLIMIT_MEMLOCK, saved_rlimit->rlim_cur),
1371 .rlim_max = MAX(HIGH_RLIMIT_MEMLOCK, saved_rlimit->rlim_max),
1372 };
1373
1374 if (saved_rlimit->rlim_max >= new_rlimit.rlim_cur &&
1375 saved_rlimit->rlim_cur >= new_rlimit.rlim_max) {
1376 log_debug("RLIMIT_MEMLOCK is already as high or higher than we need it, not bumping.");
1377 return 0;
1378 }
1379
1380 r = setrlimit_closest(RLIMIT_MEMLOCK, &new_rlimit);
fb3ae275
LP		 1381 if (r < 0)
1382 return log_warning_errno(r, "Setting RLIMIT_MEMLOCK failed, ignoring: %m");
1383
1384 return 0;
1385}
1386
80758717 1387static void test_usr(void) {
80758717 1388
796ac4c1 1389 /* Check that /usr is either on the same file system as / or mounted already. */
80758717 1390
871c44a7
LP		 1391 if (dir_is_empty("/usr") <= 0)
1392 return;
1393
8b173b5e 1394 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
871c44a7
LP		 1395 "Some things will probably break (sometimes even silently) in mysterious ways. "
1396 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1397}
1398
d3b1c508 1399static int enforce_syscall_archs(Set *archs) {
349cc4a5 1400#if HAVE_SECCOMP
d3b1c508
LP		 1401 int r;
1402
83f12b27
FS		 1403 if (!is_seccomp_available())
1404 return 0;
1405
469830d1 1406 r = seccomp_restrict_archs(arg_syscall_archs);
d3b1c508 1407 if (r < 0)
469830d1 1408 return log_error_errno(r, "Failed to enforce system call architecture restrication: %m");
d3b1c508 1409#endif
469830d1 1410 return 0;
d3b1c508
LP		 1411}
1412
b6e2f329
LP		 1413static int status_welcome(void) {
1414 _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
1415 int r;
1416
7a293242 1417 if (IN_SET(arg_show_status, SHOW_STATUS_NO, SHOW_STATUS_AUTO))
fd8c85c6
LP		 1418 return 0;
1419
d58ad743
LP		 1420 r = parse_os_release(NULL,
1421 "PRETTY_NAME", &pretty_name,
1422 "ANSI_COLOR", &ansi_color,
1423 NULL);
1424 if (r < 0)
1425 log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r,
1426 "Failed to read os-release file, ignoring: %m");
b6e2f329 1427
dc9b5816 1428 if (log_get_show_color())
a885727a 1429 return status_printf(NULL, 0,
dc9b5816
ZJS		 1430 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1431 isempty(ansi_color) ? "1" : ansi_color,
1432 isempty(pretty_name) ? "Linux" : pretty_name);
1433 else
a885727a 1434 return status_printf(NULL, 0,
dc9b5816
ZJS		 1435 "\nWelcome to %s!\n",
1436 isempty(pretty_name) ? "Linux" : pretty_name);
b6e2f329
LP		 1437}
1438
fdd25311
LP		 1439static int write_container_id(void) {
1440 const char *c;
19854865 1441 int r;
fdd25311
LP		 1442
1443 c = getenv("container");
1444 if (isempty(c))
1445 return 0;
1446
8612da97
LP		 1447 RUN_WITH_UMASK(0022)
1448 r = write_string_file("/run/systemd/container", c, WRITE_STRING_FILE_CREATE);
19854865 1449 if (r < 0)
f1f849b0 1450 return log_warning_errno(r, "Failed to write /run/systemd/container, ignoring: %m");
19854865
LP		 1451
1452 return 1;
1453}
1454
1455static int bump_unix_max_dgram_qlen(void) {
1456 _cleanup_free_ char *qlen = NULL;
1457 unsigned long v;
1458 int r;
1459
3130fca5
LP		 1460 /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel default of 16 is simply too low. We set the value
1461 * really really early during boot, so that it is actually applied to all our sockets, including the
1462 * $NOTIFY_SOCKET one. */
19854865
LP		 1463
1464 r = read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen);
1465 if (r < 0)
875622c3 1466 return log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r, "Failed to read AF_UNIX datagram queue length, ignoring: %m");
19854865
LP		 1467
1468 r = safe_atolu(qlen, &v);
1469 if (r < 0)
3130fca5 1470 return log_warning_errno(r, "Failed to parse AF_UNIX datagram queue length '%s', ignoring: %m", qlen);
19854865
LP		 1471
1472 if (v >= DEFAULT_UNIX_MAX_DGRAM_QLEN)
1473 return 0;
1474
57512c89 1475 r = write_string_filef("/proc/sys/net/unix/max_dgram_qlen", WRITE_STRING_FILE_DISABLE_BUFFER, "%lu", DEFAULT_UNIX_MAX_DGRAM_QLEN);
19854865
LP		 1476 if (r < 0)
1477 return log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
1478 "Failed to bump AF_UNIX datagram queue length, ignoring: %m");
1479
1480 return 1;
fdd25311
LP		 1481}
1482
32391275
FB		 1483static int fixup_environment(void) {
1484 _cleanup_free_ char *term = NULL;
4dc63c4b 1485 const char *t;
32391275
FB		 1486 int r;
1487
43db615b
LP		 1488 /* Only fix up the environment when we are started as PID 1 */
1489 if (getpid_cached() != 1)
1490 return 0;
1491
1492 /* We expect the environment to be set correctly if run inside a container. */
84af7821
LP		 1493 if (detect_container() > 0)
1494 return 0;
1495
43db615b
LP		 1496 /* When started as PID1, the kernel uses /dev/console for our stdios and uses TERM=linux whatever the backend
1497 * device used by the console. We try to make a better guess here since some consoles might not have support
1498 * for color mode for example.
32391275 1499 *
43db615b 1500 * However if TERM was configured through the kernel command line then leave it alone. */
1d84ad94 1501 r = proc_cmdline_get_key("TERM", 0, &term);
32391275
FB		 1502 if (r < 0)
1503 return r;
32391275 1504
4dc63c4b
LP		 1505 t = term ?: default_term_for_tty("/dev/console");
1506
1507 if (setenv("TERM", t, 1) < 0)
32391275
FB		 1508 return -errno;
1509
1510 return 0;
1511}
1512
6808a0bc
LP		 1513static void redirect_telinit(int argc, char *argv[]) {
1514
1515 /* This is compatibility support for SysV, where calling init as a user is identical to telinit. */
1516
1517#if HAVE_SYSV_COMPAT
1518 if (getpid_cached() == 1)
1519 return;
1520
1521 if (!strstr(program_invocation_short_name, "init"))
1522 return;
1523
1524 execv(SYSTEMCTL_BINARY_PATH, argv);
1525 log_error_errno(errno, "Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
a45d7127 1526 exit(EXIT_FAILURE);
6808a0bc
LP		 1527#endif
1528}
1529
4a36297c
LP		 1530static int become_shutdown(
1531 const char *shutdown_verb,
7eb35049 1532 int retval) {
4a36297c
LP		 1533
1534 char log_level[DECIMAL_STR_MAX(int) + 1],
e73c54b8
JK		 1535 exit_code[DECIMAL_STR_MAX(uint8_t) + 1],
1536 timeout[DECIMAL_STR_MAX(usec_t) + 1];
4a36297c 1537
e73c54b8 1538 const char* command_line[13] = {
4a36297c
LP		 1539 SYSTEMD_SHUTDOWN_BINARY_PATH,
1540 shutdown_verb,
e73c54b8 1541 "--timeout", timeout,
4a36297c
LP		 1542 "--log-level", log_level,
1543 "--log-target",
1544 };
1545
1546 _cleanup_strv_free_ char **env_block = NULL;
e73c54b8 1547 size_t pos = 7;
4a36297c
LP		 1548 int r;
1549
7eb35049 1550 assert(shutdown_verb);
234519ae 1551 assert(!command_line[pos]);
4a36297c
LP		 1552 env_block = strv_copy(environ);
1553
1554 xsprintf(log_level, "%d", log_get_max_level());
e73c54b8 1555 xsprintf(timeout, "%" PRI_USEC "us", arg_default_timeout_stop_usec);
4a36297c
LP		 1556
1557 switch (log_get_target()) {
1558
1559 case LOG_TARGET_KMSG:
1560 case LOG_TARGET_JOURNAL_OR_KMSG:
1561 case LOG_TARGET_SYSLOG_OR_KMSG:
1562 command_line[pos++] = "kmsg";
1563 break;
1564
1565 case LOG_TARGET_NULL:
1566 command_line[pos++] = "null";
1567 break;
1568
1569 case LOG_TARGET_CONSOLE:
1570 default:
1571 command_line[pos++] = "console";
1572 break;
1573 };
1574
1575 if (log_get_show_color())
1576 command_line[pos++] = "--log-color";
1577
1578 if (log_get_show_location())
1579 command_line[pos++] = "--log-location";
1580
1581 if (streq(shutdown_verb, "exit")) {
1582 command_line[pos++] = "--exit-code";
1583 command_line[pos++] = exit_code;
1584 xsprintf(exit_code, "%d", retval);
1585 }
1586
1587 assert(pos < ELEMENTSOF(command_line));
1588
7eb35049
LP		 1589 if (streq(shutdown_verb, "reboot") &&
1590 arg_shutdown_watchdog > 0 &&
1591 arg_shutdown_watchdog != USEC_INFINITY) {
1592
4a36297c
LP		 1593 char *e;
1594
1595 /* If we reboot let's set the shutdown
1596 * watchdog and tell the shutdown binary to
1597 * repeatedly ping it */
1598 r = watchdog_set_timeout(&arg_shutdown_watchdog);
1599 watchdog_close(r < 0);
1600
1601 /* Tell the binary how often to ping, ignore failure */
1602 if (asprintf(&e, "WATCHDOG_USEC="USEC_FMT, arg_shutdown_watchdog) > 0)
8a2c1fbf
EJ		 1603 (void) strv_consume(&env_block, e);
1604
1605 if (arg_watchdog_device &&
1606 asprintf(&e, "WATCHDOG_DEVICE=%s", arg_watchdog_device) > 0)
1607 (void) strv_consume(&env_block, e);
4a36297c
LP		 1608 } else
1609 watchdog_close(true);
1610
1611 /* Avoid the creation of new processes forked by the
1612 * kernel; at this point, we will not listen to the
1613 * signals anyway */
1614 if (detect_container() <= 0)
1615 (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
1616
1617 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
1618 return -errno;
1619}
1620
e839bafd
LP		 1621static void initialize_clock(void) {
1622 int r;
1623
1624 if (clock_is_localtime(NULL) > 0) {
1625 int min;
1626
1627 /*
1628 * The very first call of settimeofday() also does a time warp in the kernel.
1629 *
1630 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on external tools to take care
1631 * of maintaining the RTC and do all adjustments. This matches the behavior of Windows, which leaves
1632 * the RTC alone if the registry tells that the RTC runs in UTC.
1633 */
1634 r = clock_set_timezone(&min);
1635 if (r < 0)
1636 log_error_errno(r, "Failed to apply local time delta, ignoring: %m");
1637 else
1638 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
1639
1640 } else if (!in_initrd()) {
1641 /*
1642 * Do a dummy very first call to seal the kernel's time warp magic.
1643 *
1644 * Do not call this from inside the initrd. The initrd might not carry /etc/adjtime with LOCAL, but the
1645 * real system could be set up that way. In such case, we need to delay the time-warp or the sealing
1646 * until we reach the real system.
1647 *
1648 * Do no set the kernel's timezone. The concept of local time cannot be supported reliably, the time
1649 * will jump or be incorrect at every daylight saving time change. All kernel local time concepts will
1650 * be treated as UTC that way.
1651 */
1652 (void) clock_reset_timewarp();
1653 }
1654
1655 r = clock_apply_epoch();
1656 if (r < 0)
1657 log_error_errno(r, "Current system time is before build time, but cannot correct: %m");
1658 else if (r > 0)
1659 log_info("System time before build time, advancing clock.");
1660}
1661
1e41242e 1662static void initialize_coredump(bool skip_setup) {
752bcb77 1663#if ENABLE_COREDUMP
1e41242e
LP		 1664 if (getpid_cached() != 1)
1665 return;
1666
1667 /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour the limit)
1668 * will process core dumps for system services by default. */
1669 if (setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY)) < 0)
1670 log_warning_errno(errno, "Failed to set RLIMIT_CORE: %m");
1671
c6885f5f
FB		 1672 /* But at the same time, turn off the core_pattern logic by default, so that no
1673 * coredumps are stored until the systemd-coredump tool is enabled via
1674 * sysctl. However it can be changed via the kernel command line later so core
1675 * dumps can still be generated during early startup and in initramfs. */
1e41242e 1676 if (!skip_setup)
e557b1a6 1677 disable_coredumps();
752bcb77 1678#endif
1e41242e
LP		 1679}
1680
c6885f5f
FB		 1681static void initialize_core_pattern(bool skip_setup) {
1682 int r;
1683
1684 if (skip_setup || !arg_early_core_pattern)
1685 return;
1686
1687 if (getpid_cached() != 1)
1688 return;
1689
57512c89 1690 r = write_string_file("/proc/sys/kernel/core_pattern", arg_early_core_pattern, WRITE_STRING_FILE_DISABLE_BUFFER);
c6885f5f
FB		 1691 if (r < 0)
1692 log_warning_errno(r, "Failed to write '%s' to /proc/sys/kernel/core_pattern, ignoring: %m", arg_early_core_pattern);
1693}
1694
3c7878f9
LP		 1695static void do_reexecute(
1696 int argc,
1697 char *argv[],
1698 const struct rlimit *saved_rlimit_nofile,
1699 const struct rlimit *saved_rlimit_memlock,
1700 FDSet *fds,
1701 const char *switch_root_dir,
1702 const char *switch_root_init,
1703 const char **ret_error_message) {
1704
1705 unsigned i, j, args_size;
1706 const char **args;
1707 int r;
1708
1709 assert(saved_rlimit_nofile);
1710 assert(saved_rlimit_memlock);
1711 assert(ret_error_message);
1712
1713 /* Close and disarm the watchdog, so that the new instance can reinitialize it, but doesn't get rebooted while
1714 * we do that */
1715 watchdog_close(true);
1716
ddfa8b0b
LP		 1717 /* Reset RLIMIT_NOFILE + RLIMIT_MEMLOCK back to the kernel defaults, so that the new systemd can pass
1718 * the kernel default to its child processes */
1719 if (saved_rlimit_nofile->rlim_cur != 0)
3c7878f9 1720 (void) setrlimit(RLIMIT_NOFILE, saved_rlimit_nofile);
ddfa8b0b 1721 if (saved_rlimit_memlock->rlim_cur != RLIM_INFINITY)
3c7878f9
LP		 1722 (void) setrlimit(RLIMIT_MEMLOCK, saved_rlimit_memlock);
1723
1724 if (switch_root_dir) {
1725 /* Kill all remaining processes from the initrd, but don't wait for them, so that we can handle the
1726 * SIGCHLD for them after deserializing. */
e73c54b8 1727 broadcast_signal(SIGTERM, false, true, arg_default_timeout_stop_usec);
3c7878f9
LP		 1728
1729 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1730 r = switch_root(switch_root_dir, "/mnt", true, MS_MOVE);
1731 if (r < 0)
1732 log_error_errno(r, "Failed to switch root, trying to continue: %m");
1733 }
1734
1735 args_size = MAX(6, argc+1);
1736 args = newa(const char*, args_size);
1737
1738 if (!switch_root_init) {
1739 char sfd[DECIMAL_STR_MAX(int) + 1];
1740
1741 /* First try to spawn ourselves with the right path, and with full serialization. We do this only if
1742 * the user didn't specify an explicit init to spawn. */
1743
1744 assert(arg_serialization);
1745 assert(fds);
1746
1747 xsprintf(sfd, "%i", fileno(arg_serialization));
1748
1749 i = 0;
1750 args[i++] = SYSTEMD_BINARY_PATH;
1751 if (switch_root_dir)
1752 args[i++] = "--switched-root";
1753 args[i++] = arg_system ? "--system" : "--user";
1754 args[i++] = "--deserialize";
1755 args[i++] = sfd;
1756 args[i++] = NULL;
1757
1758 assert(i <= args_size);
1759
1760 /*
1761 * We want valgrind to print its memory usage summary before reexecution. Valgrind won't do this is on
1762 * its own on exec(), but it will do it on exit(). Hence, to ensure we get a summary here, fork() off
1763 * a child, let it exit() cleanly, so that it prints the summary, and wait() for it in the parent,
1764 * before proceeding into the exec().
1765 */
1766 valgrind_summary_hack();
1767
1768 (void) execv(args[0], (char* const*) args);
1769 log_debug_errno(errno, "Failed to execute our own binary, trying fallback: %m");
1770 }
1771
1772 /* Try the fallback, if there is any, without any serialization. We pass the original argv[] and envp[]. (Well,
1773 * modulo the ordering changes due to getopt() in argv[], and some cleanups in envp[], but let's hope that
1774 * doesn't matter.) */
1775
1776 arg_serialization = safe_fclose(arg_serialization);
1777 fds = fdset_free(fds);
1778
1779 /* Reopen the console */
1780 (void) make_console_stdio();
1781
1782 for (j = 1, i = 1; j < (unsigned) argc; j++)
1783 args[i++] = argv[j];
1784 args[i++] = NULL;
1785 assert(i <= args_size);
1786
1787 /* Reenable any blocked signals, especially important if we switch from initial ramdisk to init=... */
1788 (void) reset_all_signal_handlers();
1789 (void) reset_signal_mask();
595225af 1790 (void) rlimit_nofile_safe();
3c7878f9
LP		 1791
1792 if (switch_root_init) {
1793 args[0] = switch_root_init;
1794 (void) execv(args[0], (char* const*) args);
1795 log_warning_errno(errno, "Failed to execute configured init, trying fallback: %m");
1796 }
1797
1798 args[0] = "/sbin/init";
1799 (void) execv(args[0], (char* const*) args);
1800 r = -errno;
1801
1802 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1803 ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL,
1804 "Failed to execute /sbin/init");
1805
1806 if (r == -ENOENT) {
1807 log_warning("No /sbin/init, trying fallback");
1808
1809 args[0] = "/bin/sh";
1810 args[1] = NULL;
1811 (void) execv(args[0], (char* const*) args);
1812 log_error_errno(errno, "Failed to execute /bin/sh, giving up: %m");
1813 } else
1814 log_warning_errno(r, "Failed to execute /sbin/init, giving up: %m");
1815
1816 *ret_error_message = "Failed to execute fallback shell";
1817}
1818
7eb35049
LP		 1819static int invoke_main_loop(
1820 Manager *m,
1821 bool *ret_reexecute,
1822 int *ret_retval, /* Return parameters relevant for shutting down */
1823 const char **ret_shutdown_verb, /* … */
1824 FDSet **ret_fds, /* Return parameters for reexecuting */
1825 char **ret_switch_root_dir, /* … */
1826 char **ret_switch_root_init, /* … */
1827 const char **ret_error_message) {
1828
1829 int r;
1830
1831 assert(m);
1832 assert(ret_reexecute);
1833 assert(ret_retval);
1834 assert(ret_shutdown_verb);
1835 assert(ret_fds);
1836 assert(ret_switch_root_dir);
1837 assert(ret_switch_root_init);
1838 assert(ret_error_message);
1839
1840 for (;;) {
1841 r = manager_loop(m);
1842 if (r < 0) {
1843 *ret_error_message = "Failed to run main loop";
1844 return log_emergency_errno(r, "Failed to run main loop: %m");
1845 }
1846
3ca4d0b3 1847 switch ((ManagerObjective) r) {
7eb35049 1848
a6ecbf83 1849 case MANAGER_RELOAD: {
bda7d78b 1850 LogTarget saved_log_target;
a6ecbf83
FB		 1851 int saved_log_level;
1852
7eb35049
LP		 1853 log_info("Reloading.");
1854
3fe91079 1855 /* First, save any overridden log level/target, then parse the configuration file, which might
bda7d78b
FB		 1856 * change the log level to new settings. */
1857
a6ecbf83 1858 saved_log_level = m->log_level_overridden ? log_get_max_level() : -1;
bda7d78b 1859 saved_log_target = m->log_target_overridden ? log_get_target() : _LOG_TARGET_INVALID;
a6ecbf83 1860
7eb35049
LP		 1861 r = parse_config_file();
1862 if (r < 0)
1863 log_warning_errno(r, "Failed to parse config file, ignoring: %m");
1864
1865 set_manager_defaults(m);
1866
a6ecbf83
FB		 1867 if (saved_log_level >= 0)
1868 manager_override_log_level(m, saved_log_level);
bda7d78b
FB		 1869 if (saved_log_target >= 0)
1870 manager_override_log_target(m, saved_log_target);
a6ecbf83 1871
7eb35049
LP		 1872 r = manager_reload(m);
1873 if (r < 0)
7a35fa24
LP		 1874 /* Reloading failed before the point of no return. Let's continue running as if nothing happened. */
1875 m->objective = MANAGER_OK;
7eb35049
LP		 1876
1877 break;
a6ecbf83 1878 }
7eb35049
LP		 1879
1880 case MANAGER_REEXECUTE:
1881
1882 r = prepare_reexecute(m, &arg_serialization, ret_fds, false);
1883 if (r < 0) {
1884 *ret_error_message = "Failed to prepare for reexecution";
1885 return r;
1886 }
1887
1888 log_notice("Reexecuting.");
1889
1890 *ret_reexecute = true;
1891 *ret_retval = EXIT_SUCCESS;
1892 *ret_shutdown_verb = NULL;
1893 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1894
1895 return 0;
1896
1897 case MANAGER_SWITCH_ROOT:
1898 if (!m->switch_root_init) {
1899 r = prepare_reexecute(m, &arg_serialization, ret_fds, true);
1900 if (r < 0) {
1901 *ret_error_message = "Failed to prepare for reexecution";
1902 return r;
1903 }
1904 } else
1905 *ret_fds = NULL;
1906
1907 log_notice("Switching root.");
1908
1909 *ret_reexecute = true;
1910 *ret_retval = EXIT_SUCCESS;
1911 *ret_shutdown_verb = NULL;
1912
1913 /* Steal the switch root parameters */
49052946
YW		 1914 *ret_switch_root_dir = TAKE_PTR(m->switch_root);
1915 *ret_switch_root_init = TAKE_PTR(m->switch_root_init);
7eb35049
LP		 1916
1917 return 0;
1918
1919 case MANAGER_EXIT:
1920
1921 if (MANAGER_IS_USER(m)) {
1922 log_debug("Exit.");
1923
1924 *ret_reexecute = false;
1925 *ret_retval = m->return_value;
1926 *ret_shutdown_verb = NULL;
1927 *ret_fds = NULL;
1928 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1929
1930 return 0;
1931 }
1932
1933 _fallthrough_;
1934 case MANAGER_REBOOT:
1935 case MANAGER_POWEROFF:
1936 case MANAGER_HALT:
1937 case MANAGER_KEXEC: {
af41e508
LP		 1938 static const char * const table[_MANAGER_OBJECTIVE_MAX] = {
1939 [MANAGER_EXIT] = "exit",
1940 [MANAGER_REBOOT] = "reboot",
7eb35049 1941 [MANAGER_POWEROFF] = "poweroff",
af41e508
LP		 1942 [MANAGER_HALT] = "halt",
1943 [MANAGER_KEXEC] = "kexec",
7eb35049
LP		 1944 };
1945
1946 log_notice("Shutting down.");
1947
1948 *ret_reexecute = false;
1949 *ret_retval = m->return_value;
af41e508 1950 assert_se(*ret_shutdown_verb = table[m->objective]);
7eb35049
LP		 1951 *ret_fds = NULL;
1952 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1953
1954 return 0;
1955 }
1956
1957 default:
af41e508 1958 assert_not_reached("Unknown or unexpected manager objective.");
7eb35049
LP		 1959 }
1960 }
1961}
1962
31aef7ff
LP		 1963static void log_execution_mode(bool *ret_first_boot) {
1964 assert(ret_first_boot);
1965
1966 if (arg_system) {
1967 int v;
1968
681bd2c5 1969 log_info("systemd " GIT_VERSION " running in %ssystem mode. (" SYSTEMD_FEATURES ")",
31aef7ff
LP		 1970 arg_action == ACTION_TEST ? "test " : "" );
1971
1972 v = detect_virtualization();
1973 if (v > 0)
1974 log_info("Detected virtualization %s.", virtualization_to_string(v));
1975
1976 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1977
1978 if (in_initrd()) {
1979 *ret_first_boot = false;
1980 log_info("Running in initial RAM disk.");
1981 } else {
1982 /* Let's check whether we are in first boot, i.e. whether /etc is still unpopulated. We use
1983 * /etc/machine-id as flag file, for this: if it exists we assume /etc is populated, if it
1984 * doesn't it's unpopulated. This allows container managers and installers to provision a
1985 * couple of files already. If the container manager wants to provision the machine ID itself
1986 * it should pass $container_uuid to PID 1. */
1987
1988 *ret_first_boot = access("/etc/machine-id", F_OK) < 0;
1989 if (*ret_first_boot)
1990 log_info("Running with unpopulated /etc.");
1991 }
1992 } else {
b9e90f3a
LP		 1993 if (DEBUG_LOGGING) {
1994 _cleanup_free_ char *t;
31aef7ff 1995
b9e90f3a 1996 t = uid_to_name(getuid());
681bd2c5 1997 log_debug("systemd " GIT_VERSION " running in %suser mode for user " UID_FMT "/%s. (" SYSTEMD_FEATURES ")",
b9e90f3a
LP		 1998 arg_action == ACTION_TEST ? " test" : "", getuid(), strna(t));
1999 }
31aef7ff
LP		 2000
2001 *ret_first_boot = false;
2002 }
2003}
2004
5afbaa36
LP		 2005static int initialize_runtime(
2006 bool skip_setup,
2007 struct rlimit *saved_rlimit_nofile,
2008 struct rlimit *saved_rlimit_memlock,
2009 const char **ret_error_message) {
2010
2011 int r;
2012
2013 assert(ret_error_message);
2014
2015 /* Sets up various runtime parameters. Many of these initializations are conditionalized:
2016 *
2017 * - Some only apply to --system instances
2018 * - Some only apply to --user instances
2019 * - Some only apply when we first start up, but not when we reexecute
2020 */
2021
2d776038
LP		 2022 if (arg_action != ACTION_RUN)
2023 return 0;
2024
3c3c6cb9
LP		 2025 if (arg_system) {
2026 /* Make sure we leave a core dump without panicing the kernel. */
2027 install_crash_handler();
5afbaa36 2028
3c3c6cb9 2029 if (!skip_setup) {
143fadf3 2030 r = mount_cgroup_controllers();
3c3c6cb9
LP		 2031 if (r < 0) {
2032 *ret_error_message = "Failed to mount cgroup hierarchies";
2033 return r;
2034 }
2035
2036 status_welcome();
2037 hostname_setup();
2038 machine_id_setup(NULL, arg_machine_id, NULL);
2039 loopback_setup();
2040 bump_unix_max_dgram_qlen();
a8b627aa 2041 bump_file_max_and_nr_open();
3c3c6cb9
LP		 2042 test_usr();
2043 write_container_id();
2044 }
8a2c1fbf 2045
3c3c6cb9
LP		 2046 if (arg_watchdog_device) {
2047 r = watchdog_set_device(arg_watchdog_device);
2048 if (r < 0)
2049 log_warning_errno(r, "Failed to set watchdog device to %s, ignoring: %m", arg_watchdog_device);
2050 }
2051
2052 if (arg_runtime_watchdog > 0 && arg_runtime_watchdog != USEC_INFINITY)
2053 watchdog_set_timeout(&arg_runtime_watchdog);
2054 }
5afbaa36
LP		 2055
2056 if (arg_timer_slack_nsec != NSEC_INFINITY)
2057 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
3a671cd1 2058 log_warning_errno(errno, "Failed to adjust timer slack, ignoring: %m");
5afbaa36
LP		 2059
2060 if (arg_system && !cap_test_all(arg_capability_bounding_set)) {
2061 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set);
2062 if (r < 0) {
2063 *ret_error_message = "Failed to drop capability bounding set of usermode helpers";
2064 return log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m");
2065 }
2066
2067 r = capability_bounding_set_drop(arg_capability_bounding_set, true);
2068 if (r < 0) {
2069 *ret_error_message = "Failed to drop capability bounding set";
2070 return log_emergency_errno(r, "Failed to drop capability bounding set: %m");
2071 }
2072 }
2073
39362f6f
JB		 2074 if (arg_system && arg_no_new_privs) {
2075 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) < 0) {
2076 *ret_error_message = "Failed to disable new privileges";
2077 return log_emergency_errno(errno, "Failed to disable new privileges: %m");
2078 }
2079 }
2080
5afbaa36
LP		 2081 if (arg_syscall_archs) {
2082 r = enforce_syscall_archs(arg_syscall_archs);
2083 if (r < 0) {
2084 *ret_error_message = "Failed to set syscall architectures";
2085 return r;
2086 }
2087 }
2088
2089 if (!arg_system)
2090 /* Become reaper of our children */
2091 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0)
2092 log_warning_errno(errno, "Failed to make us a subreaper: %m");
2093
a17c1712
LP		 2094 /* Bump up RLIMIT_NOFILE for systemd itself */
2095 (void) bump_rlimit_nofile(saved_rlimit_nofile);
2096 (void) bump_rlimit_memlock(saved_rlimit_memlock);
5afbaa36
LP		 2097
2098 return 0;
2099}
2100
6acca5fc
LP		 2101static int do_queue_default_job(
2102 Manager *m,
2103 const char **ret_error_message) {
2104
2105 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2106 Job *default_unit_job;
2107 Unit *target = NULL;
2108 int r;
2109
2110 log_debug("Activating default unit: %s", arg_default_unit);
2111
4109ede7
ZJS		 2112 r = manager_load_startable_unit_or_warn(m, arg_default_unit, NULL, &target);
2113 if (r < 0) {
2114 log_info("Falling back to rescue target: " SPECIAL_RESCUE_TARGET);
6acca5fc 2115
4109ede7 2116 r = manager_load_startable_unit_or_warn(m, SPECIAL_RESCUE_TARGET, NULL, &target);
6acca5fc 2117 if (r < 0) {
4109ede7
ZJS		 2118 *ret_error_message = r == -ERFKILL ? "Rescue target masked"
2119 : "Failed to load rescue target";
2120 return r;
6acca5fc
LP		 2121 }
2122 }
2123
2124 assert(target->load_state == UNIT_LOADED);
2125
50cbaba4 2126 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, NULL, &error, &default_unit_job);
6acca5fc
LP		 2127 if (r == -EPERM) {
2128 log_debug_errno(r, "Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
2129
2130 sd_bus_error_free(&error);
2131
50cbaba4 2132 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, NULL, &error, &default_unit_job);
6acca5fc
LP		 2133 if (r < 0) {
2134 *ret_error_message = "Failed to start default target";
2135 return log_emergency_errno(r, "Failed to start default target: %s", bus_error_message(&error, r));
2136 }
2137
2138 } else if (r < 0) {
2139 *ret_error_message = "Failed to isolate default target";
2140 return log_emergency_errno(r, "Failed to isolate default target: %s", bus_error_message(&error, r));
2141 }
2142
2143 m->default_unit_job_id = default_unit_job->id;
2144
2145 return 0;
2146}
2147
970777b5 2148static void free_arguments(void) {
970777b5
LP		 2149
2150 /* Frees all arg_* variables, with the exception of arg_serialization */
ef59409f 2151 rlimit_free_all(arg_default_rlimit);
970777b5
LP		 2152
2153 arg_default_unit = mfree(arg_default_unit);
2154 arg_confirm_spawn = mfree(arg_confirm_spawn);
970777b5
LP		 2155 arg_default_environment = strv_free(arg_default_environment);
2156 arg_syscall_archs = set_free(arg_syscall_archs);
2157}
2158
97d1fb94
LP		 2159static int load_configuration(int argc, char **argv, const char **ret_error_message) {
2160 int r;
2161
2162 assert(ret_error_message);
2163
2164 arg_default_tasks_max = system_tasks_max_scale(DEFAULT_TASKS_MAX_PERCENTAGE, 100U);
2165
2166 r = parse_config_file();
2167 if (r < 0) {
2168 *ret_error_message = "Failed to parse config file";
2169 return r;
2170 }
2171
2172 if (arg_system) {
2173 r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
2174 if (r < 0)
2175 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
2176 }
2177
2178 /* Note that this also parses bits from the kernel command line, including "debug". */
2179 log_parse_environment();
2180
2181 r = parse_argv(argc, argv);
2182 if (r < 0) {
2183 *ret_error_message = "Failed to parse commandline arguments";
2184 return r;
2185 }
2186
2187 /* Initialize default unit */
2188 if (!arg_default_unit) {
2189 arg_default_unit = strdup(SPECIAL_DEFAULT_TARGET);
2190 if (!arg_default_unit) {
2191 *ret_error_message = "Failed to set default unit";
2192 return log_oom();
2193 }
2194 }
2195
db33214b 2196 /* Initialize the show status setting if it hasn't been set explicitly yet */
7a293242 2197 if (arg_show_status == _SHOW_STATUS_INVALID)
db33214b
LP		 2198 arg_show_status = SHOW_STATUS_YES;
2199
97d1fb94
LP		 2200 return 0;
2201}
2202
b0d7c989
LP		 2203static int safety_checks(void) {
2204
febf46a4 2205 if (getpid_cached() == 1 &&
baaa35ad
ZJS		 2206 arg_action != ACTION_RUN)
2207 return log_error_errno(SYNTHETIC_ERRNO(EPERM),
2208 "Unsupported execution mode while PID 1.");
febf46a4
LP		 2209
2210 if (getpid_cached() == 1 &&
baaa35ad
ZJS		 2211 !arg_system)
2212 return log_error_errno(SYNTHETIC_ERRNO(EPERM),
2213 "Can't run --user mode as PID 1.");
febf46a4
LP		 2214
2215 if (arg_action == ACTION_RUN &&
2216 arg_system &&
baaa35ad
ZJS		 2217 getpid_cached() != 1)
2218 return log_error_errno(SYNTHETIC_ERRNO(EPERM),
2219 "Can't run system mode unless PID 1.");
febf46a4 2220
b0d7c989 2221 if (arg_action == ACTION_TEST &&
baaa35ad
ZJS		 2222 geteuid() == 0)
2223 return log_error_errno(SYNTHETIC_ERRNO(EPERM),
2224 "Don't run test mode as root.");
b0d7c989
LP		 2225
2226 if (!arg_system &&
2227 arg_action == ACTION_RUN &&
baaa35ad
ZJS		 2228 sd_booted() <= 0)
2229 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
2230 "Trying to run as user instance, but the system has not been booted with systemd.");
b0d7c989
LP		 2231
2232 if (!arg_system &&
2233 arg_action == ACTION_RUN &&
baaa35ad
ZJS		 2234 !getenv("XDG_RUNTIME_DIR"))
2235 return log_error_errno(SYNTHETIC_ERRNO(EUNATCH),
2236 "Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
b0d7c989
LP		 2237
2238 if (arg_system &&
2239 arg_action == ACTION_RUN &&
baaa35ad
ZJS		 2240 running_in_chroot() > 0)
2241 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
2242 "Cannot be run in a chroot() environment.");
b0d7c989
LP		 2243
2244 return 0;
2245}
2246
74da609f
LP		 2247static int initialize_security(
2248 bool *loaded_policy,
2249 dual_timestamp *security_start_timestamp,
2250 dual_timestamp *security_finish_timestamp,
2251 const char **ret_error_message) {
2252
2253 int r;
2254
2255 assert(loaded_policy);
2256 assert(security_start_timestamp);
2257 assert(security_finish_timestamp);
2258 assert(ret_error_message);
2259
2260 dual_timestamp_get(security_start_timestamp);
2261
97149f40 2262 r = mac_selinux_setup(loaded_policy);
74da609f
LP		 2263 if (r < 0) {
2264 *ret_error_message = "Failed to load SELinux policy";
2265 return r;
2266 }
2267
2268 r = mac_smack_setup(loaded_policy);
2269 if (r < 0) {
2270 *ret_error_message = "Failed to load SMACK policy";
2271 return r;
2272 }
2273
2274 r = ima_setup();
2275 if (r < 0) {
2276 *ret_error_message = "Failed to load IMA policy";
2277 return r;
2278 }
2279
2280 dual_timestamp_get(security_finish_timestamp);
2281 return 0;
2282}
2283
263162da
LP		 2284static void test_summary(Manager *m) {
2285 assert(m);
2286
2287 printf("-> By units:\n");
2288 manager_dump_units(m, stdout, "\t");
2289
2290 printf("-> By jobs:\n");
2291 manager_dump_jobs(m, stdout, "\t");
2292}
2293
efeb853f
LP		 2294static int collect_fds(FDSet **ret_fds, const char **ret_error_message) {
2295 int r;
2296
2297 assert(ret_fds);
2298 assert(ret_error_message);
2299
2300 r = fdset_new_fill(ret_fds);
2301 if (r < 0) {
2302 *ret_error_message = "Failed to allocate fd set";
2303 return log_emergency_errno(r, "Failed to allocate fd set: %m");
2304 }
2305
2306 fdset_cloexec(*ret_fds, true);
2307
2308 if (arg_serialization)
2309 assert_se(fdset_remove(*ret_fds, fileno(arg_serialization)) >= 0);
2310
2311 return 0;
2312}
2313
2e51b31c
LP		 2314static void setup_console_terminal(bool skip_setup) {
2315
2316 if (!arg_system)
2317 return;
2318
2319 /* Become a session leader if we aren't one yet. */
2320 (void) setsid();
2321
2322 /* If we are init, we connect stdin/stdout/stderr to /dev/null and make sure we don't have a controlling
2323 * tty. */
2324 (void) release_terminal();
2325
2326 /* Reset the console, but only if this is really init and we are freshly booted */
2327 if (getpid_cached() == 1 && !skip_setup)
2328 (void) console_setup();
2329}
2330
aa40ff07
LP		 2331static bool early_skip_setup_check(int argc, char *argv[]) {
2332 bool found_deserialize = false;
2333 int i;
2334
2335 /* Determine if this is a reexecution or normal bootup. We do the full command line parsing much later, so
2336 * let's just have a quick peek here. Note that if we have switched root, do all the special setup things
2337 * anyway, even if in that case we also do deserialization. */
2338
2339 for (i = 1; i < argc; i++) {
aa40ff07
LP		 2340 if (streq(argv[i], "--switched-root"))
2341 return false; /* If we switched root, don't skip the setup. */
2342 else if (streq(argv[i], "--deserialize"))
2343 found_deserialize = true;
2344 }
2345
2346 return found_deserialize; /* When we are deserializing, then we are reexecuting, hence avoid the extensive setup */
2347}
2348
60918275 2349int main(int argc, char *argv[]) {
625e8690
LP		 2350
2351 dual_timestamp initrd_timestamp = DUAL_TIMESTAMP_NULL, userspace_timestamp = DUAL_TIMESTAMP_NULL, kernel_timestamp = DUAL_TIMESTAMP_NULL,
2352 security_start_timestamp = DUAL_TIMESTAMP_NULL, security_finish_timestamp = DUAL_TIMESTAMP_NULL;
ddfa8b0b
LP		 2353 struct rlimit saved_rlimit_nofile = RLIMIT_MAKE_CONST(0),
2354 saved_rlimit_memlock = RLIMIT_MAKE_CONST(RLIM_INFINITY); /* The original rlimits we passed
2355 * in. Note we use different values
2356 * for the two that indicate whether
2357 * these fields are initialized! */
625e8690
LP		 2358 bool skip_setup, loaded_policy = false, queue_default_job = false, first_boot = false, reexecute = false;
2359 char *switch_root_dir = NULL, *switch_root_init = NULL;
9d76d730 2360 usec_t before_startup, after_startup;
625e8690 2361 static char systemd[] = "systemd";
9d76d730 2362 char timespan[FORMAT_TIMESPAN_MAX];
625e8690
LP		 2363 const char *shutdown_verb = NULL, *error_message = NULL;
2364 int r, retval = EXIT_FAILURE;
2365 Manager *m = NULL;
a16e1123 2366 FDSet *fds = NULL;
27b14a22 2367
d72a8f10 2368 /* SysV compatibility: redirect init → telinit */
6808a0bc 2369 redirect_telinit(argc, argv);
2cb1a60d 2370
d72a8f10 2371 /* Take timestamps early on */
c3a170f3
HH		 2372 dual_timestamp_from_monotonic(&kernel_timestamp, 0);
2373 dual_timestamp_get(&userspace_timestamp);
2374
d72a8f10
LP		 2375 /* Figure out whether we need to do initialize the system, or if we already did that because we are
2376 * reexecuting */
aa40ff07 2377 skip_setup = early_skip_setup_check(argc, argv);
d03bc1b8 2378
d72a8f10
LP		 2379 /* If we get started via the /sbin/init symlink then we are called 'init'. After a subsequent reexecution we
2380 * are then called 'systemd'. That is confusing, hence let's call us systemd right-away. */
f3b6a3ed 2381 program_invocation_short_name = systemd;
eee8b7ab 2382 (void) prctl(PR_SET_NAME, systemd);
5d6b1584 2383
d72a8f10 2384 /* Save the original command line */
36fea155 2385 save_argc_argv(argc, argv);
f3b6a3ed 2386
6fdb8de4 2387 /* Make sure that if the user says "syslog" we actually log to the journal. */
c1dc6153 2388 log_set_upgrade_syslog_to_journal(true);
bbe63281 2389
df0ff127 2390 if (getpid_cached() == 1) {
b5752d23
LP		 2391 /* When we run as PID 1 force system mode */
2392 arg_system = true;
2393
48a601fe 2394 /* Disable the umask logic */
90dc8c2e
MG		 2395 umask(0);
2396
92890452
LP		 2397 /* Make sure that at least initially we do not ever log to journald/syslogd, because it might not be
2398 * activated yet (even though the log socket for it exists). */
d075092f
LP		 2399 log_set_prohibit_ipc(true);
2400
48a601fe
LP		 2401 /* Always reopen /dev/console when running as PID 1 or one of its pre-execve() children. This is
2402 * important so that we never end up logging to any foreign stderr, for example if we have to log in a
2403 * child process right before execve()'ing the actual binary, at a point in time where socket
2404 * activation stderr/stdout area already set up. */
2405 log_set_always_reopen_console(true);
48a601fe 2406
92890452 2407 if (detect_container() <= 0) {
4f8d551f 2408
92890452 2409 /* Running outside of a container as PID 1 */
92890452
LP		 2410 log_set_target(LOG_TARGET_KMSG);
2411 log_open();
a866073d 2412
92890452
LP		 2413 if (in_initrd())
2414 initrd_timestamp = userspace_timestamp;
c3ba6250 2415
92890452
LP		 2416 if (!skip_setup) {
2417 r = mount_setup_early();
2418 if (r < 0) {
2419 error_message = "Failed to mount early API filesystems";
2420 goto finish;
2421 }
2422
2423 r = initialize_security(
2424 &loaded_policy,
2425 &security_start_timestamp,
2426 &security_finish_timestamp,
2427 &error_message);
2428 if (r < 0)
2429 goto finish;
d723cd65 2430 }
eee8b7ab 2431
92890452
LP		 2432 if (mac_selinux_init() < 0) {
2433 error_message = "Failed to initialize SELinux policy";
96694e99 2434 goto finish;
92890452 2435 }
0b3325e7 2436
92890452
LP		 2437 if (!skip_setup)
2438 initialize_clock();
2439
2440 /* Set the default for later on, but don't actually open the logs like this for now. Note that
2441 * if we are transitioning from the initrd there might still be journal fd open, and we
2442 * shouldn't attempt opening that before we parsed /proc/cmdline which might redirect output
2443 * elsewhere. */
2444 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
2445
2446 } else {
2447 /* Running inside a container, as PID 1 */
92890452
LP		 2448 log_set_target(LOG_TARGET_CONSOLE);
2449 log_open();
2450
2451 /* For later on, see above... */
2452 log_set_target(LOG_TARGET_JOURNAL);
2453
2454 /* clear the kernel timestamp,
2455 * because we are in a container */
2456 kernel_timestamp = DUAL_TIMESTAMP_NULL;
cb6531be 2457 }
7948c4df 2458
92890452 2459 initialize_coredump(skip_setup);
a866073d 2460
92890452
LP		 2461 r = fixup_environment();
2462 if (r < 0) {
2463 log_emergency_errno(r, "Failed to fix up PID 1 environment: %m");
2464 error_message = "Failed to fix up PID1 environment";
2465 goto finish;
2466 }
a866073d 2467
c3a170f3 2468 } else {
a866073d 2469 /* Running as user instance */
463d0d15 2470 arg_system = false;
eeecf6e6 2471 log_set_target(LOG_TARGET_AUTO);
871e5809 2472 log_open();
c3a170f3
HH		 2473
2474 /* clear the kernel timestamp,
2475 * because we are not PID 1 */
6513d561 2476 kernel_timestamp = DUAL_TIMESTAMP_NULL;
bbe63281 2477 }
a5dab5ce 2478
6edefe0b 2479 if (arg_system) {
92890452
LP		 2480 /* Try to figure out if we can use colors with the console. No need to do that for user instances since
2481 * they never log into the console. */
3a18b604 2482 log_show_color(colors_enabled());
92890452 2483
c76cf844
AK		 2484 r = make_null_stdio();
2485 if (r < 0)
92890452 2486 log_warning_errno(r, "Failed to redirect standard streams to /dev/null, ignoring: %m");
3a18b604
FB		 2487 }
2488
f170852a
LP		 2489 /* Mount /proc, /sys and friends, so that /proc/cmdline and
2490 * /proc/$PID/fd is available. */
df0ff127 2491 if (getpid_cached() == 1) {
f84f9974 2492
a132bef0 2493 /* Load the kernel modules early. */
2e75e2a8
DM		 2494 if (!skip_setup)
2495 kmod_setup();
2e75e2a8 2496
0c85a4f3 2497 r = mount_setup(loaded_policy);
cb6531be
ZJS		 2498 if (r < 0) {
2499 error_message = "Failed to mount API filesystems";
8efe3c01 2500 goto finish;
cb6531be 2501 }
0c85a4f3 2502 }
4ade7963
LP		 2503
2504 /* Reset all signal handlers. */
ce30c8dc
LP		 2505 (void) reset_all_signal_handlers();
2506 (void) ignore_signals(SIGNALS_IGNORE, -1);
078e4539 2507
97d1fb94
LP		 2508 r = load_configuration(argc, argv, &error_message);
2509 if (r < 0)
f170852a 2510 goto finish;
10c961b9 2511
b0d7c989
LP		 2512 r = safety_checks();
2513 if (r < 0)
fe783b03 2514 goto finish;
fe783b03 2515
bbc1acab 2516 if (IN_SET(arg_action, ACTION_TEST, ACTION_HELP, ACTION_DUMP_CONFIGURATION_ITEMS, ACTION_DUMP_BUS_PROPERTIES))
0221d68a 2517 (void) pager_open(arg_pager_flags);
b0d7c989
LP		 2518
2519 if (arg_action != ACTION_RUN)
74e7579c 2520 skip_setup = true;
b87c2aa6 2521
fa0f4d8a 2522 if (arg_action == ACTION_HELP) {
37ec0fdd 2523 retval = help() < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
f170852a 2524 goto finish;
9ba0bc4e
ZJS		 2525 } else if (arg_action == ACTION_VERSION) {
2526 retval = version();
2527 goto finish;
fa0f4d8a 2528 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
e537352b 2529 unit_dump_config_items(stdout);
22f4096c 2530 retval = EXIT_SUCCESS;
e537352b 2531 goto finish;
bbc1acab
YW		 2532 } else if (arg_action == ACTION_DUMP_BUS_PROPERTIES) {
2533 dump_bus_properties(stdout);
2534 retval = EXIT_SUCCESS;
2535 goto finish;
f170852a
LP		 2536 }
2537
4c701096 2538 assert_se(IN_SET(arg_action, ACTION_RUN, ACTION_TEST));
f170852a 2539
5a2e0c62
LP		 2540 /* Move out of the way, so that we won't block unmounts */
2541 assert_se(chdir("/") == 0);
2542
dea374e8 2543 if (arg_action == ACTION_RUN) {
a70c72a0 2544
c6885f5f
FB		 2545 /* A core pattern might have been specified via the cmdline. */
2546 initialize_core_pattern(skip_setup);
2547
efeb853f 2548 /* Close logging fds, in order not to confuse collecting passed fds and terminal logic below */
a70c72a0
LP		 2549 log_close();
2550
2551 /* Remember open file descriptors for later deserialization */
efeb853f
LP		 2552 r = collect_fds(&fds, &error_message);
2553 if (r < 0)
dea374e8 2554 goto finish;
a16e1123 2555
2e51b31c
LP		 2556 /* Give up any control of the console, but make sure its initialized. */
2557 setup_console_terminal(skip_setup);
56d96fc0 2558
a70c72a0
LP		 2559 /* Open the logging devices, if possible and necessary */
2560 log_open();
56d96fc0 2561 }
4ade7963 2562
31aef7ff 2563 log_execution_mode(&first_boot);
a5dab5ce 2564
2d776038
LP		 2565 r = initialize_runtime(skip_setup,
2566 &saved_rlimit_nofile,
2567 &saved_rlimit_memlock,
2568 &error_message);
2569 if (r < 0)
2570 goto finish;
4096d6f5 2571
e0a3da1f
ZJS		 2572 r = manager_new(arg_system ? UNIT_FILE_SYSTEM : UNIT_FILE_USER,
2573 arg_action == ACTION_TEST ? MANAGER_TEST_FULL : 0,
2574 &m);
e96d6be7 2575 if (r < 0) {
da927ba9 2576 log_emergency_errno(r, "Failed to allocate manager object: %m");
cb6531be 2577 error_message = "Failed to allocate manager object";
60918275
LP		 2578 goto finish;
2579 }
2580
9f9f0342
LP		 2581 m->timestamps[MANAGER_TIMESTAMP_KERNEL] = kernel_timestamp;
2582 m->timestamps[MANAGER_TIMESTAMP_INITRD] = initrd_timestamp;
2583 m->timestamps[MANAGER_TIMESTAMP_USERSPACE] = userspace_timestamp;
d4ee7bd8
YW		 2584 m->timestamps[manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_SECURITY_START)] = security_start_timestamp;
2585 m->timestamps[manager_timestamp_initrd_mangle(MANAGER_TIMESTAMP_SECURITY_FINISH)] = security_finish_timestamp;
9e58ff9c 2586
85cb4151 2587 set_manager_defaults(m);
7b46fc6a 2588 set_manager_settings(m);
fd130612 2589 manager_set_first_boot(m, first_boot);
27d340c7 2590
bf4df7c3 2591 /* Remember whether we should queue the default job */
d3b1c508 2592 queue_default_job = !arg_serialization || arg_switched_root;
bf4df7c3 2593
9d76d730
LP		 2594 before_startup = now(CLOCK_MONOTONIC);
2595
d3b1c508 2596 r = manager_startup(m, arg_serialization, fds);
58f88d92 2597 if (r < 0) {
cefb3eda 2598 error_message = "Failed to start up manager";
58f88d92
ZJS		 2599 goto finish;
2600 }
a16e1123 2601
6acca5fc 2602 /* This will close all file descriptors that were opened, but not claimed by any unit. */
2feceb5e 2603 fds = fdset_free(fds);
74ca738f 2604 arg_serialization = safe_fclose(arg_serialization);
bf4df7c3
LP		 2605
2606 if (queue_default_job) {
6acca5fc 2607 r = do_queue_default_job(m, &error_message);
718db961 2608 if (r < 0)
37d88da7 2609 goto finish;
6acca5fc 2610 }
ab17a050 2611
6acca5fc 2612 after_startup = now(CLOCK_MONOTONIC);
60918275 2613
6acca5fc
LP		 2614 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
2615 "Loaded units and determined initial transaction in %s.",
2616 format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 100 * USEC_PER_MSEC));
07672f49 2617
6acca5fc 2618 if (arg_action == ACTION_TEST) {
263162da 2619 test_summary(m);
6acca5fc
LP		 2620 retval = EXIT_SUCCESS;
2621 goto finish;
e965d56d 2622 }
d46de8a1 2623
3046b6db
LP		 2624 (void) invoke_main_loop(m,
2625 &reexecute,
2626 &retval,
2627 &shutdown_verb,
2628 &fds,
2629 &switch_root_dir,
2630 &switch_root_init,
2631 &error_message);
f170852a 2632
60918275 2633finish:
b87c2aa6
ZJS		 2634 pager_close();
2635
92890452 2636 if (m) {
81f5fc2d 2637 arg_shutdown_watchdog = m->shutdown_watchdog;
92890452
LP		 2638 m = manager_free(m);
2639 }
60918275 2640
970777b5 2641 free_arguments();
cc56fafe 2642 mac_selinux_finish();
b2bb3dbe 2643
3c7878f9
LP		 2644 if (reexecute)
2645 do_reexecute(argc, argv,
2646 &saved_rlimit_nofile,
2647 &saved_rlimit_memlock,
2648 fds,
2649 switch_root_dir,
2650 switch_root_init,
2651 &error_message); /* This only returns if reexecution failed */
a16e1123 2652
74ca738f 2653 arg_serialization = safe_fclose(arg_serialization);
2feceb5e 2654 fds = fdset_free(fds);
a16e1123 2655
349cc4a5 2656#if HAVE_VALGRIND_VALGRIND_H
54b434b1
LP		 2657 /* If we are PID 1 and running under valgrind, then let's exit
2658 * here explicitly. valgrind will only generate nice output on
2659 * exit(), not on exec(), hence let's do the former not the
2660 * latter here. */
8a2c1fbf
EJ		 2661 if (getpid_cached() == 1 && RUNNING_ON_VALGRIND) {
2662 /* Cleanup watchdog_device strings for valgrind. We need them
2663 * in become_shutdown() so normally we cannot free them yet. */
2664 watchdog_free_device();
2665 arg_watchdog_device = mfree(arg_watchdog_device);
27fe58b7 2666 return retval;
8a2c1fbf 2667 }
54b434b1
LP		 2668#endif
2669
7e11a95e
EV		 2670#if HAS_FEATURE_ADDRESS_SANITIZER
2671 __lsan_do_leak_check();
2672#endif
2673
b9080b03 2674 if (shutdown_verb) {
7eb35049 2675 r = become_shutdown(shutdown_verb, retval);
4a36297c 2676 log_error_errno(r, "Failed to execute shutdown binary, %s: %m", getpid_cached() == 1 ? "freezing" : "quitting");
9b9881d7 2677 error_message = "Failed to execute shutdown binary";
b9080b03
FF		 2678 }
2679
8a2c1fbf
EJ		 2680 watchdog_free_device();
2681 arg_watchdog_device = mfree(arg_watchdog_device);
2682
df0ff127 2683 if (getpid_cached() == 1) {
cb6531be
ZJS		 2684 if (error_message)
2685 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1fc464f6 2686 ANSI_HIGHLIGHT_RED "!!!!!!" ANSI_NORMAL,
bb259772
LP		 2687 "%s.", error_message);
2688 freeze_or_exit_or_reboot();
cb6531be 2689 }
c3b3c274 2690
60918275
LP		 2691 return retval;
2692}
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