]> git.ipfire.org Git - thirdparty/systemd.git/blame - src/core/main.c
projects / thirdparty / systemd.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
po: update Russian translation
[thirdparty/systemd.git] / src / core / main.c
CommitLineData
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"
24efb112 31#include "clock-util.h"
3dfc9763 32#include "conf-parser.h"
618234a5 33#include "cpu-set-util.h"
bbc1acab 34#include "dbus.h"
3dfc9763
LP		 35#include "dbus-manager.h"
36#include "def.h"
eee8b7ab 37#include "emergency-action.h"
3dfc9763 38#include "env-util.h"
57b7a260 39#include "exit-status.h"
3ffd4af2 40#include "fd-util.h"
3dfc9763 41#include "fdset.h"
718db961 42#include "fileio.h"
f97b34a6 43#include "format-util.h"
f4f15635 44#include "fs-util.h"
3dfc9763
LP		 45#include "hostname-setup.h"
46#include "ima-setup.h"
47#include "killall.h"
48#include "kmod-setup.h"
d7b8eec7 49#include "load-fragment.h"
3dfc9763 50#include "log.h"
b6e66135 51#include "loopback-setup.h"
b6e66135 52#include "machine-id-setup.h"
3dfc9763
LP		 53#include "manager.h"
54#include "missing.h"
55#include "mount-setup.h"
d58ad743 56#include "os-util.h"
3dfc9763 57#include "pager.h"
6bedfcbb 58#include "parse-util.h"
7d5ceb64 59#include "path-util.h"
4e731273 60#include "proc-cmdline.h"
3dfc9763 61#include "process-util.h"
8869a0b4 62#include "raw-clone.h"
78f22b97 63#include "rlimit-util.h"
349cc4a5 64#if HAVE_SECCOMP
83f12b27
FS		 65#include "seccomp-util.h"
66#endif
b6e66135 67#include "selinux-setup.h"
3dfc9763
LP		 68#include "selinux-util.h"
69#include "signal-util.h"
ffbd2c4d 70#include "smack-setup.h"
3dfc9763 71#include "special.h"
8fcde012 72#include "stat-util.h"
15a5e950 73#include "stdio-util.h"
3dfc9763
LP		 74#include "strv.h"
75#include "switch-root.h"
76#include "terminal-util.h"
8612da97 77#include "umask-util.h"
b1d4f8e1 78#include "user-util.h"
9ce17593 79#include "util.h"
3dfc9763
LP		 80#include "virt.h"
81#include "watchdog.h"
b6e66135 82
f170852a
LP		 83static enum {
84 ACTION_RUN,
e965d56d 85 ACTION_HELP,
9ba0bc4e 86 ACTION_VERSION,
e537352b 87 ACTION_TEST,
bbc1acab
YW		 88 ACTION_DUMP_CONFIGURATION_ITEMS,
89 ACTION_DUMP_BUS_PROPERTIES,
fa0f4d8a 90} arg_action = ACTION_RUN;
fa0f4d8a 91static char *arg_default_unit = NULL;
463d0d15 92static bool arg_system = false;
fa0f4d8a 93static bool arg_dump_core = true;
fa0f4d8a 94static int arg_crash_chvt = -1;
b9e74c39
LP		 95static bool arg_crash_shell = false;
96static bool arg_crash_reboot = false;
7d5ceb64 97static char *arg_confirm_spawn = NULL;
b6e2f329 98static ShowStatus arg_show_status = _SHOW_STATUS_UNSET;
bf4df7c3 99static bool arg_switched_root = false;
ea4b98e6 100static bool arg_no_pager = false;
2a12e32e 101static bool arg_service_watchdogs = true;
0c85a4f3 102static char ***arg_join_controllers = NULL;
706343f4 103static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
0a494f1f 104static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
1f19a534
OS		 105static usec_t arg_default_restart_usec = DEFAULT_RESTART_USEC;
106static usec_t arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC;
107static usec_t arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
3f41e1e5
LN		 108static usec_t arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL;
109static unsigned arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST;
e96d6be7
LP		 110static usec_t arg_runtime_watchdog = 0;
111static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
8a2c1fbf 112static char *arg_watchdog_device = NULL;
97d0e5f8 113static char **arg_default_environment = NULL;
517d56b1 114static struct rlimit *arg_default_rlimit[_RLIMIT_MAX] = {};
a103496c 115static uint64_t arg_capability_bounding_set = CAP_ALL;
39362f6f 116static bool arg_no_new_privs = false;
3a43da28 117static nsec_t arg_timer_slack_nsec = NSEC_INFINITY;
bd8f585b 118static usec_t arg_default_timer_accuracy_usec = 1 * USEC_PER_MINUTE;
d3b1c508
LP		 119static Set* arg_syscall_archs = NULL;
120static FILE* arg_serialization = NULL;
085afe36 121static bool arg_default_cpu_accounting = false;
13c31542 122static bool arg_default_io_accounting = false;
377bfd2d 123static bool arg_default_ip_accounting = false;
085afe36 124static bool arg_default_blockio_accounting = false;
444d5863 125static bool arg_default_memory_accounting = MEMORY_ACCOUNTING_DEFAULT;
9ded9cd1 126static bool arg_default_tasks_accounting = true;
79baeeb9 127static uint64_t arg_default_tasks_max = UINT64_MAX;
ee48dbd5 128static sd_id128_t arg_machine_id = {};
ae8c7939 129static EmergencyAction arg_cad_burst_action = EMERGENCY_ACTION_REBOOT_FORCE;
4fc935ca 130
848e863a 131_noreturn_ static void freeze_or_reboot(void) {
b9e74c39
LP		 132
133 if (arg_crash_reboot) {
134 log_notice("Rebooting in 10s...");
135 (void) sleep(10);
136
137 log_notice("Rebooting now...");
138 (void) reboot(RB_AUTOBOOT);
139 log_emergency_errno(errno, "Failed to reboot: %m");
140 }
141
142 log_emergency("Freezing execution.");
143 freeze();
144}
145
848e863a 146_noreturn_ static void crash(int sig) {
7d06dad9
MS		 147 struct sigaction sa;
148 pid_t pid;
97c4f35c 149
df0ff127 150 if (getpid_cached() != 1)
abb26902 151 /* Pass this on immediately, if this is not PID 1 */
92ca4cac 152 (void) raise(sig);
abb26902 153 else if (!arg_dump_core)
4104970e 154 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig));
97c4f35c 155 else {
7d06dad9 156 sa = (struct sigaction) {
189d5bac 157 .sa_handler = nop_signal_handler,
b92bea5d
ZJS		 158 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
159 };
97c4f35c 160
6f5e3f35 161 /* We want to wait for the core process, hence let's enable SIGCHLD */
92ca4cac 162 (void) sigaction(SIGCHLD, &sa, NULL);
6f5e3f35 163
8869a0b4 164 pid = raw_clone(SIGCHLD);
e62d8c39 165 if (pid < 0)
56f64d95 166 log_emergency_errno(errno, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig));
97c4f35c 167 else if (pid == 0) {
97c4f35c 168 /* Enable default signal handler for core dump */
15a90032 169
92ca4cac
LP		 170 sa = (struct sigaction) {
171 .sa_handler = SIG_DFL,
172 };
173 (void) sigaction(sig, &sa, NULL);
97c4f35c 174
15a90032
LP		 175 /* Don't limit the coredump size */
176 (void) setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY));
97c4f35c
LP		 177
178 /* Just to be sure... */
e62d9b81 179 (void) chdir("/");
97c4f35c
LP		 180
181 /* Raise the signal again */
ee05e779 182 pid = raw_getpid();
92ca4cac 183 (void) kill(pid, sig); /* raise() would kill the parent */
97c4f35c
LP		 184
185 assert_not_reached("We shouldn't be here...");
92ca4cac 186 _exit(EXIT_FAILURE);
4fc935ca 187 } else {
8e12a6ae
LP		 188 siginfo_t status;
189 int r;
4fc935ca
LP		 190
191 /* Order things nicely. */
e62d8c39
ZJS		 192 r = wait_for_terminate(pid, &status);
193 if (r < 0)
da927ba9 194 log_emergency_errno(r, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig));
8e12a6ae 195 else if (status.si_code != CLD_DUMPED)
ee05e779
ZJS		 196 log_emergency("Caught <%s>, core dump failed (child "PID_FMT", code=%s, status=%i/%s).",
197 signal_to_string(sig),
198 pid, sigchld_code_to_string(status.si_code),
199 status.si_status,
200 strna(status.si_code == CLD_EXITED
38107f5a 201 ? exit_status_to_string(status.si_status, EXIT_STATUS_MINIMAL)
ee05e779 202 : signal_to_string(status.si_status)));
4fc935ca 203 else
4104970e 204 log_emergency("Caught <%s>, dumped core as pid "PID_FMT".", signal_to_string(sig), pid);
97c4f35c
LP		 205 }
206 }
207
b9e74c39 208 if (arg_crash_chvt >= 0)
92ca4cac 209 (void) chvt(arg_crash_chvt);
601f6a1e 210
7d06dad9
MS		 211 sa = (struct sigaction) {
212 .sa_handler = SIG_IGN,
213 .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
214 };
215
216 /* Let the kernel reap children for us */
217 (void) sigaction(SIGCHLD, &sa, NULL);
8c43883a 218
7d06dad9 219 if (arg_crash_shell) {
b9e74c39 220 log_notice("Executing crash shell in 10s...");
92ca4cac 221 (void) sleep(10);
4fc935ca 222
8869a0b4 223 pid = raw_clone(SIGCHLD);
cd3bd60a 224 if (pid < 0)
56f64d95 225 log_emergency_errno(errno, "Failed to fork off crash shell: %m");
6f5e3f35 226 else if (pid == 0) {
b9e74c39 227 (void) setsid();
92ca4cac
LP		 228 (void) make_console_stdio();
229 (void) execle("/bin/sh", "/bin/sh", NULL, environ);
6f5e3f35 230
ee05e779 231 log_emergency_errno(errno, "execle() failed: %m");
92ca4cac 232 _exit(EXIT_FAILURE);
b9e74c39
LP		 233 } else {
234 log_info("Spawned crash shell as PID "PID_FMT".", pid);
4cf0b03b 235 (void) wait_for_terminate(pid, NULL);
b9e74c39 236 }
4fc935ca
LP		 237 }
238
b9e74c39 239 freeze_or_reboot();
97c4f35c
LP		 240}
241
242static void install_crash_handler(void) {
297d563d 243 static const struct sigaction sa = {
b92bea5d 244 .sa_handler = crash,
297d563d 245 .sa_flags = SA_NODEFER, /* So that we can raise the signal again from the signal handler */
b92bea5d 246 };
297d563d 247 int r;
97c4f35c 248
297d563d
LP		 249 /* We ignore the return value here, since, we don't mind if we
250 * cannot set up a crash handler */
251 r = sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
252 if (r < 0)
253 log_debug_errno(r, "I had trouble setting up the crash handler, ignoring: %m");
97c4f35c 254}
f170852a 255
56d96fc0
LP		 256static int console_setup(void) {
257 _cleanup_close_ int tty_fd = -1;
258 int r;
80876c20 259
512947d4 260 tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
23bbb0de
MS		 261 if (tty_fd < 0)
262 return log_error_errno(tty_fd, "Failed to open /dev/console: %m");
80876c20 263
56d96fc0
LP		 264 /* We don't want to force text mode. plymouth may be showing
265 * pictures already from initrd. */
512947d4 266 r = reset_terminal_fd(tty_fd, false);
23bbb0de
MS		 267 if (r < 0)
268 return log_error_errno(r, "Failed to reset /dev/console: %m");
843d2643 269
56d96fc0 270 return 0;
80876c20
LP		 271}
272
b9e74c39
LP		 273static int parse_crash_chvt(const char *value) {
274 int b;
275
276 if (safe_atoi(value, &arg_crash_chvt) >= 0)
277 return 0;
278
279 b = parse_boolean(value);
280 if (b < 0)
281 return b;
282
283 if (b > 0)
284 arg_crash_chvt = 0; /* switch to where kmsg goes */
285 else
286 arg_crash_chvt = -1; /* turn off switching */
287
288 return 0;
289}
290
7d5ceb64
FB		 291static int parse_confirm_spawn(const char *value, char **console) {
292 char *s;
293 int r;
294
295 r = value ? parse_boolean(value) : 1;
296 if (r == 0) {
297 *console = NULL;
298 return 0;
299 }
300
301 if (r > 0) /* on with default tty */
302 s = strdup("/dev/console");
303 else if (is_path(value)) /* on with fully qualified path */
304 s = strdup(value);
305 else /* on with only a tty file name, not a fully qualified path */
306 s = strjoin("/dev/", value);
307 if (!s)
308 return -ENOMEM;
5b65ae15 309
7d5ceb64
FB		 310 *console = s;
311 return 0;
312}
313
ee48dbd5 314static int set_machine_id(const char *m) {
e042eab7 315 sd_id128_t t;
8b26cdbd 316 assert(m);
ee48dbd5 317
e042eab7 318 if (sd_id128_from_string(m, &t) < 0)
ee48dbd5
NC		 319 return -EINVAL;
320
e042eab7 321 if (sd_id128_is_null(t))
ee48dbd5
NC		 322 return -EINVAL;
323
e042eab7 324 arg_machine_id = t;
ee48dbd5
NC		 325 return 0;
326}
327
96287a49 328static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
f170852a 329
059cb385 330 int r;
f170852a 331
059cb385 332 assert(key);
5192bd19 333
1d84ad94 334 if (STR_IN_SET(key, "systemd.unit", "rd.systemd.unit")) {
bf4df7c3 335
1d84ad94
LP		 336 if (proc_cmdline_value_missing(key, value))
337 return 0;
bf4df7c3 338
1d84ad94
LP		 339 if (!unit_name_is_valid(value, UNIT_NAME_PLAIN|UNIT_NAME_INSTANCE))
340 log_warning("Unit name specified on %s= is not valid, ignoring: %s", key, value);
341 else if (in_initrd() == !!startswith(key, "rd.")) {
342 if (free_and_strdup(&arg_default_unit, value) < 0)
343 return log_oom();
344 }
f170852a 345
1d84ad94 346 } else if (proc_cmdline_key_streq(key, "systemd.dump_core")) {
4fc935ca 347
1d84ad94 348 r = value ? parse_boolean(value) : true;
fb472900 349 if (r < 0)
059cb385 350 log_warning("Failed to parse dump core switch %s. Ignoring.", value);
4fc935ca 351 else
fa0f4d8a 352 arg_dump_core = r;
4fc935ca 353
1d84ad94 354 } else if (proc_cmdline_key_streq(key, "systemd.crash_chvt")) {
b9e74c39 355
1d84ad94
LP		 356 if (!value)
357 arg_crash_chvt = 0; /* turn on */
358 else if (parse_crash_chvt(value) < 0)
b9e74c39
LP		 359 log_warning("Failed to parse crash chvt switch %s. Ignoring.", value);
360
1d84ad94 361 } else if (proc_cmdline_key_streq(key, "systemd.crash_shell")) {
4fc935ca 362
1d84ad94 363 r = value ? parse_boolean(value) : true;
fb472900 364 if (r < 0)
059cb385 365 log_warning("Failed to parse crash shell switch %s. Ignoring.", value);
4fc935ca 366 else
fa0f4d8a 367 arg_crash_shell = r;
5e7ee61c 368
1d84ad94 369 } else if (proc_cmdline_key_streq(key, "systemd.crash_reboot")) {
5e7ee61c 370
1d84ad94 371 r = value ? parse_boolean(value) : true;
b9e74c39
LP		 372 if (r < 0)
373 log_warning("Failed to parse crash reboot switch %s. Ignoring.", value);
5e7ee61c 374 else
b9e74c39 375 arg_crash_reboot = r;
5e7ee61c 376
1d84ad94
LP		 377 } else if (proc_cmdline_key_streq(key, "systemd.confirm_spawn")) {
378 char *s;
7d5ceb64 379
1d84ad94 380 r = parse_confirm_spawn(value, &s);
059cb385 381 if (r < 0)
7d5ceb64 382 log_warning_errno(r, "Failed to parse confirm_spawn switch %s. Ignoring.", value);
1d84ad94
LP		 383 else {
384 free(arg_confirm_spawn);
385 arg_confirm_spawn = s;
386 }
601f6a1e 387
2a12e32e
JK		 388 } else if (proc_cmdline_key_streq(key, "systemd.service_watchdogs")) {
389
390 r = value ? parse_boolean(value) : true;
391 if (r < 0)
392 log_warning("Failed to parse service watchdog switch %s. Ignoring.", value);
393 else
394 arg_service_watchdogs = r;
395
1d84ad94 396 } else if (proc_cmdline_key_streq(key, "systemd.show_status")) {
9e58ff9c 397
1d84ad94
LP		 398 if (value) {
399 r = parse_show_status(value, &arg_show_status);
400 if (r < 0)
401 log_warning("Failed to parse show status switch %s. Ignoring.", value);
402 } else
403 arg_show_status = SHOW_STATUS_YES;
059cb385 404
1d84ad94
LP		 405 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_output")) {
406
407 if (proc_cmdline_value_missing(key, value))
408 return 0;
0a494f1f 409
059cb385 410 r = exec_output_from_string(value);
fb472900 411 if (r < 0)
059cb385 412 log_warning("Failed to parse default standard output switch %s. Ignoring.", value);
0a494f1f
LP		 413 else
414 arg_default_std_output = r;
0a494f1f 415
1d84ad94
LP		 416 } else if (proc_cmdline_key_streq(key, "systemd.default_standard_error")) {
417
418 if (proc_cmdline_value_missing(key, value))
419 return 0;
059cb385
LP		 420
421 r = exec_output_from_string(value);
fb472900 422 if (r < 0)
059cb385 423 log_warning("Failed to parse default standard error switch %s. Ignoring.", value);
0a494f1f
LP		 424 else
425 arg_default_std_error = r;
9e7c5357 426
1d84ad94
LP		 427 } else if (streq(key, "systemd.setenv")) {
428
429 if (proc_cmdline_value_missing(key, value))
430 return 0;
059cb385
LP		 431
432 if (env_assignment_is_valid(value)) {
e21fea24
KS		 433 char **env;
434
059cb385 435 env = strv_env_set(arg_default_environment, value);
1d84ad94
LP		 436 if (!env)
437 return log_oom();
438
439 arg_default_environment = env;
e21fea24 440 } else
059cb385 441 log_warning("Environment variable name '%s' is not valid. Ignoring.", value);
9e58ff9c 442
1d84ad94
LP		 443 } else if (proc_cmdline_key_streq(key, "systemd.machine_id")) {
444
445 if (proc_cmdline_value_missing(key, value))
446 return 0;
447
448 r = set_machine_id(value);
449 if (r < 0)
450 log_warning("MachineID '%s' is not valid. Ignoring.", value);
ee48dbd5 451
1d84ad94
LP		 452 } else if (proc_cmdline_key_streq(key, "systemd.default_timeout_start_sec")) {
453
454 if (proc_cmdline_value_missing(key, value))
455 return 0;
456
457 r = parse_sec(value, &arg_default_timeout_start_usec);
458 if (r < 0)
459 log_warning_errno(r, "Failed to parse default start timeout: %s, ignoring.", value);
460
461 if (arg_default_timeout_start_usec <= 0)
462 arg_default_timeout_start_usec = USEC_INFINITY;
ee48dbd5 463
8a2c1fbf
EJ		 464 } else if (proc_cmdline_key_streq(key, "systemd.watchdog_device")) {
465
466 if (proc_cmdline_value_missing(key, value))
467 return 0;
468
469 parse_path_argument_and_warn(value, false, &arg_watchdog_device);
470
059cb385 471 } else if (streq(key, "quiet") && !value) {
d7b15e0a 472
b6e2f329 473 if (arg_show_status == _SHOW_STATUS_UNSET)
d450b6f2 474 arg_show_status = SHOW_STATUS_AUTO;
059cb385
LP		 475
476 } else if (streq(key, "debug") && !value) {
d7b15e0a 477
1de1c9c3
LP		 478 /* Note that log_parse_environment() handles 'debug'
479 * too, and sets the log level to LOG_DEBUG. */
d7b15e0a 480
75f86906 481 if (detect_container() > 0)
b2103dcc 482 log_set_target(LOG_TARGET_CONSOLE);
059cb385 483
dcd61450 484 } else if (!value) {
e2c9a131 485 const char *target;
f170852a
LP		 486
487 /* SysV compatibility */
e2c9a131
EV		 488 target = runlevel_to_target(key);
489 if (target)
490 return free_and_strdup(&arg_default_unit, target);
f170852a
LP		 491 }
492
493 return 0;
494}
495
e8e581bf
ZJS		 496#define DEFINE_SETTER(name, func, descr) \
497 static int name(const char *unit, \
498 const char *filename, \
499 unsigned line, \
500 const char *section, \
71a61510 501 unsigned section_line, \
e8e581bf
ZJS		 502 const char *lvalue, \
503 int ltype, \
504 const char *rvalue, \
505 void *data, \
506 void *userdata) { \
507 \
508 int r; \
509 \
510 assert(filename); \
511 assert(lvalue); \
512 assert(rvalue); \
513 \
514 r = func(rvalue); \
515 if (r < 0) \
d1cefe0a
LP		 516 log_syntax(unit, LOG_ERR, filename, line, r, \
517 "Invalid " descr "'%s': %m", \
518 rvalue); \
e8e581bf
ZJS		 519 \
520 return 0; \
521 }
487393e9 522
a6ecbf83
FB		 523DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level");
524DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target");
525DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" );
526DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location");
487393e9 527
4d7213b2
LP		 528static int config_parse_cpu_affinity2(
529 const char *unit,
530 const char *filename,
531 unsigned line,
532 const char *section,
533 unsigned section_line,
534 const char *lvalue,
535 int ltype,
536 const char *rvalue,
537 void *data,
538 void *userdata) {
487393e9 539
4b40bc38 540 _cleanup_cpu_free_ cpu_set_t *c = NULL;
f5c72b73 541 int ncpus;
487393e9 542
765d143b 543 ncpus = parse_cpu_set_and_warn(rvalue, &c, unit, filename, line, lvalue);
f5c72b73
FB		 544 if (ncpus < 0)
545 return ncpus;
487393e9 546
f5c72b73 547 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
25f027c5 548 log_warning_errno(errno, "Failed to set CPU affinity: %m");
487393e9 549
487393e9
LP		 550 return 0;
551}
552
4d7213b2
LP		 553static int config_parse_show_status(
554 const char* unit,
555 const char *filename,
556 unsigned line,
557 const char *section,
558 unsigned section_line,
559 const char *lvalue,
560 int ltype,
561 const char *rvalue,
562 void *data,
563 void *userdata) {
564
565 int k;
566 ShowStatus *b = data;
567
568 assert(filename);
569 assert(lvalue);
570 assert(rvalue);
571 assert(data);
572
573 k = parse_show_status(rvalue, b);
574 if (k < 0) {
12ca818f 575 log_syntax(unit, LOG_ERR, filename, line, k, "Failed to parse show status setting, ignoring: %s", rvalue);
4d7213b2
LP		 576 return 0;
577 }
578
579 return 0;
580}
581
5db98187
LP		 582static int config_parse_output_restricted(
583 const char* unit,
584 const char *filename,
585 unsigned line,
586 const char *section,
587 unsigned section_line,
588 const char *lvalue,
589 int ltype,
590 const char *rvalue,
591 void *data,
592 void *userdata) {
593
594 ExecOutput t, *eo = data;
595
596 assert(filename);
597 assert(lvalue);
598 assert(rvalue);
599 assert(data);
600
601 t = exec_output_from_string(rvalue);
602 if (t < 0) {
603 log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse output type, ignoring: %s", rvalue);
604 return 0;
605 }
606
607 if (IN_SET(t, EXEC_OUTPUT_SOCKET, EXEC_OUTPUT_NAMED_FD, EXEC_OUTPUT_FILE)) {
608 log_syntax(unit, LOG_ERR, filename, line, 0, "Standard output types socket, fd:, file: are not supported as defaults, ignoring: %s", rvalue);
609 return 0;
610 }
611
612 *eo = t;
613 return 0;
614}
615
b9e74c39
LP		 616static int config_parse_crash_chvt(
617 const char* unit,
618 const char *filename,
619 unsigned line,
620 const char *section,
621 unsigned section_line,
622 const char *lvalue,
623 int ltype,
624 const char *rvalue,
625 void *data,
626 void *userdata) {
627
628 int r;
629
630 assert(filename);
631 assert(lvalue);
632 assert(rvalue);
b9e74c39
LP		 633
634 r = parse_crash_chvt(rvalue);
635 if (r < 0) {
636 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue);
637 return 0;
638 }
639
640 return 0;
641}
642
487393e9
LP		 643static int parse_config_file(void) {
644
f975e971 645 const ConfigTableItem items[] = {
d3b1c508
LP		 646 { "Manager", "LogLevel", config_parse_level2, 0, NULL },
647 { "Manager", "LogTarget", config_parse_target, 0, NULL },
648 { "Manager", "LogColor", config_parse_color, 0, NULL },
649 { "Manager", "LogLocation", config_parse_location, 0, NULL },
650 { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
b9e74c39
LP		 651 { "Manager", "CrashChVT", /* legacy */ config_parse_crash_chvt, 0, NULL },
652 { "Manager", "CrashChangeVT", config_parse_crash_chvt, 0, NULL },
d3b1c508 653 { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
b9e74c39 654 { "Manager", "CrashReboot", config_parse_bool, 0, &arg_crash_reboot },
d3b1c508 655 { "Manager", "ShowStatus", config_parse_show_status, 0, &arg_show_status },
d3b1c508
LP		 656 { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
657 { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
658 { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog },
659 { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog },
8a2c1fbf 660 { "Manager", "WatchdogDevice", config_parse_path, 0, &arg_watchdog_device },
a103496c 661 { "Manager", "CapabilityBoundingSet", config_parse_capability_set, 0, &arg_capability_bounding_set },
39362f6f 662 { "Manager", "NoNewPrivileges", config_parse_bool, 0, &arg_no_new_privs },
349cc4a5 663#if HAVE_SECCOMP
d3b1c508 664 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs, 0, &arg_syscall_archs },
89fffa27 665#endif
d3b1c508 666 { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
bd8f585b 667 { "Manager", "DefaultTimerAccuracySec", config_parse_sec, 0, &arg_default_timer_accuracy_usec },
5db98187
LP		 668 { "Manager", "DefaultStandardOutput", config_parse_output_restricted,0, &arg_default_std_output },
669 { "Manager", "DefaultStandardError", config_parse_output_restricted,0, &arg_default_std_error },
d3b1c508
LP		 670 { "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_default_timeout_start_usec },
671 { "Manager", "DefaultTimeoutStopSec", config_parse_sec, 0, &arg_default_timeout_stop_usec },
672 { "Manager", "DefaultRestartSec", config_parse_sec, 0, &arg_default_restart_usec },
f0367da7
LP		 673 { "Manager", "DefaultStartLimitInterval", config_parse_sec, 0, &arg_default_start_limit_interval }, /* obsolete alias */
674 { "Manager", "DefaultStartLimitIntervalSec",config_parse_sec, 0, &arg_default_start_limit_interval },
d3b1c508
LP		 675 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_default_start_limit_burst },
676 { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
4f424df7
LP		 677 { "Manager", "DefaultLimitCPU", config_parse_rlimit, RLIMIT_CPU, arg_default_rlimit },
678 { "Manager", "DefaultLimitFSIZE", config_parse_rlimit, RLIMIT_FSIZE, arg_default_rlimit },
679 { "Manager", "DefaultLimitDATA", config_parse_rlimit, RLIMIT_DATA, arg_default_rlimit },
680 { "Manager", "DefaultLimitSTACK", config_parse_rlimit, RLIMIT_STACK, arg_default_rlimit },
681 { "Manager", "DefaultLimitCORE", config_parse_rlimit, RLIMIT_CORE, arg_default_rlimit },
682 { "Manager", "DefaultLimitRSS", config_parse_rlimit, RLIMIT_RSS, arg_default_rlimit },
683 { "Manager", "DefaultLimitNOFILE", config_parse_rlimit, RLIMIT_NOFILE, arg_default_rlimit },
684 { "Manager", "DefaultLimitAS", config_parse_rlimit, RLIMIT_AS, arg_default_rlimit },
685 { "Manager", "DefaultLimitNPROC", config_parse_rlimit, RLIMIT_NPROC, arg_default_rlimit },
686 { "Manager", "DefaultLimitMEMLOCK", config_parse_rlimit, RLIMIT_MEMLOCK, arg_default_rlimit },
687 { "Manager", "DefaultLimitLOCKS", config_parse_rlimit, RLIMIT_LOCKS, arg_default_rlimit },
688 { "Manager", "DefaultLimitSIGPENDING", config_parse_rlimit, RLIMIT_SIGPENDING, arg_default_rlimit },
689 { "Manager", "DefaultLimitMSGQUEUE", config_parse_rlimit, RLIMIT_MSGQUEUE, arg_default_rlimit },
690 { "Manager", "DefaultLimitNICE", config_parse_rlimit, RLIMIT_NICE, arg_default_rlimit },
691 { "Manager", "DefaultLimitRTPRIO", config_parse_rlimit, RLIMIT_RTPRIO, arg_default_rlimit },
692 { "Manager", "DefaultLimitRTTIME", config_parse_rlimit, RLIMIT_RTTIME, arg_default_rlimit },
085afe36 693 { "Manager", "DefaultCPUAccounting", config_parse_bool, 0, &arg_default_cpu_accounting },
13c31542 694 { "Manager", "DefaultIOAccounting", config_parse_bool, 0, &arg_default_io_accounting },
377bfd2d 695 { "Manager", "DefaultIPAccounting", config_parse_bool, 0, &arg_default_ip_accounting },
085afe36
LP		 696 { "Manager", "DefaultBlockIOAccounting", config_parse_bool, 0, &arg_default_blockio_accounting },
697 { "Manager", "DefaultMemoryAccounting", config_parse_bool, 0, &arg_default_memory_accounting },
03a7b521 698 { "Manager", "DefaultTasksAccounting", config_parse_bool, 0, &arg_default_tasks_accounting },
0af20ea2 699 { "Manager", "DefaultTasksMax", config_parse_tasks_max, 0, &arg_default_tasks_max },
ae8c7939 700 { "Manager", "CtrlAltDelBurstAction", config_parse_emergency_action, 0, &arg_cad_burst_action },
d3b1c508 701 {}
487393e9
LP		 702 };
703
1b907b5c 704 const char *fn, *conf_dirs_nulstr;
487393e9 705
463d0d15 706 fn = arg_system ?
75eb6154
LP		 707 PKGSYSCONFDIR "/system.conf" :
708 PKGSYSCONFDIR "/user.conf";
709
463d0d15 710 conf_dirs_nulstr = arg_system ?
75eb6154
LP		 711 CONF_PATHS_NULSTR("systemd/system.conf.d") :
712 CONF_PATHS_NULSTR("systemd/user.conf.d");
713
bcde742e 714 (void) config_parse_many_nulstr(fn, conf_dirs_nulstr, "Manager\0", config_item_table_lookup, items, CONFIG_PARSE_WARN, NULL);
36c16a7c
LP		 715
716 /* Traditionally "0" was used to turn off the default unit timeouts. Fix this up so that we used USEC_INFINITY
717 * like everywhere else. */
718 if (arg_default_timeout_start_usec <= 0)
719 arg_default_timeout_start_usec = USEC_INFINITY;
720 if (arg_default_timeout_stop_usec <= 0)
721 arg_default_timeout_stop_usec = USEC_INFINITY;
487393e9 722
487393e9
LP		 723 return 0;
724}
725
85cb4151 726static void set_manager_defaults(Manager *m) {
06af2a04
TB		 727
728 assert(m);
729
5b65ae15
LP		 730 /* Propagates the various default unit property settings into the manager object, i.e. properties that do not
731 * affect the manager itself, but are just what newly allocated units will have set if they haven't set
732 * anything else. (Also see set_manager_settings() for the settings that affect the manager's own behaviour) */
733
06af2a04
TB		 734 m->default_timer_accuracy_usec = arg_default_timer_accuracy_usec;
735 m->default_std_output = arg_default_std_output;
736 m->default_std_error = arg_default_std_error;
737 m->default_timeout_start_usec = arg_default_timeout_start_usec;
738 m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
739 m->default_restart_usec = arg_default_restart_usec;
740 m->default_start_limit_interval = arg_default_start_limit_interval;
741 m->default_start_limit_burst = arg_default_start_limit_burst;
742 m->default_cpu_accounting = arg_default_cpu_accounting;
13c31542 743 m->default_io_accounting = arg_default_io_accounting;
377bfd2d 744 m->default_ip_accounting = arg_default_ip_accounting;
06af2a04
TB		 745 m->default_blockio_accounting = arg_default_blockio_accounting;
746 m->default_memory_accounting = arg_default_memory_accounting;
03a7b521 747 m->default_tasks_accounting = arg_default_tasks_accounting;
0af20ea2 748 m->default_tasks_max = arg_default_tasks_max;
06af2a04
TB		 749
750 manager_set_default_rlimits(m, arg_default_rlimit);
751 manager_environment_add(m, NULL, arg_default_environment);
752}
753
7b46fc6a
LP		 754static void set_manager_settings(Manager *m) {
755
756 assert(m);
757
5b65ae15
LP		 758 /* Propagates the various manager settings into the manager object, i.e. properties that effect the manager
759 * itself (as opposed to just being inherited into newly allocated units, see set_manager_defaults() above). */
760
7b46fc6a 761 m->confirm_spawn = arg_confirm_spawn;
2a12e32e 762 m->service_watchdogs = arg_service_watchdogs;
7b46fc6a
LP		 763 m->runtime_watchdog = arg_runtime_watchdog;
764 m->shutdown_watchdog = arg_shutdown_watchdog;
765 m->cad_burst_action = arg_cad_burst_action;
766
767 manager_set_show_status(m, arg_show_status);
768}
769
f170852a 770static int parse_argv(int argc, char *argv[]) {
f170852a
LP		 771 enum {
772 ARG_LOG_LEVEL = 0x100,
773 ARG_LOG_TARGET,
bbe63281
LP		 774 ARG_LOG_COLOR,
775 ARG_LOG_LOCATION,
2f198e2f 776 ARG_UNIT,
edb9aaa8 777 ARG_SYSTEM,
af2d49f7 778 ARG_USER,
e537352b 779 ARG_TEST,
b87c2aa6 780 ARG_NO_PAGER,
9ba0bc4e 781 ARG_VERSION,
80876c20 782 ARG_DUMP_CONFIGURATION_ITEMS,
bbc1acab 783 ARG_DUMP_BUS_PROPERTIES,
9e58ff9c 784 ARG_DUMP_CORE,
b9e74c39 785 ARG_CRASH_CHVT,
9e58ff9c 786 ARG_CRASH_SHELL,
b9e74c39 787 ARG_CRASH_REBOOT,
a16e1123 788 ARG_CONFIRM_SPAWN,
9e58ff9c 789 ARG_SHOW_STATUS,
4288f619 790 ARG_DESERIALIZE,
2660882b 791 ARG_SWITCHED_ROOT,
0a494f1f 792 ARG_DEFAULT_STD_OUTPUT,
ee48dbd5 793 ARG_DEFAULT_STD_ERROR,
2a12e32e
JK		 794 ARG_MACHINE_ID,
795 ARG_SERVICE_WATCHDOGS,
f170852a
LP		 796 };
797
798 static const struct option options[] = {
a16e1123
LP		 799 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
800 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
bbe63281
LP		 801 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
802 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
2f198e2f 803 { "unit", required_argument, NULL, ARG_UNIT },
edb9aaa8 804 { "system", no_argument, NULL, ARG_SYSTEM },
af2d49f7 805 { "user", no_argument, NULL, ARG_USER },
a16e1123 806 { "test", no_argument, NULL, ARG_TEST },
b87c2aa6 807 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
a16e1123 808 { "help", no_argument, NULL, 'h' },
9ba0bc4e 809 { "version", no_argument, NULL, ARG_VERSION },
a16e1123 810 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
bbc1acab 811 { "dump-bus-properties", no_argument, NULL, ARG_DUMP_BUS_PROPERTIES },
a5d87bf0 812 { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
b9e74c39 813 { "crash-chvt", required_argument, NULL, ARG_CRASH_CHVT },
a5d87bf0 814 { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
b9e74c39 815 { "crash-reboot", optional_argument, NULL, ARG_CRASH_REBOOT },
a5d87bf0 816 { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
6e98720f 817 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
a16e1123 818 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
2660882b 819 { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
0a494f1f
LP		 820 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
821 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
ee48dbd5 822 { "machine-id", required_argument, NULL, ARG_MACHINE_ID },
2a12e32e 823 { "service-watchdogs", required_argument, NULL, ARG_SERVICE_WATCHDOGS },
fb472900 824 {}
f170852a
LP		 825 };
826
827 int c, r;
828
829 assert(argc >= 1);
830 assert(argv);
831
df0ff127 832 if (getpid_cached() == 1)
b770165a
LP		 833 opterr = 0;
834
099663ff 835 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
f170852a
LP		 836
837 switch (c) {
838
839 case ARG_LOG_LEVEL:
fb472900
ZJS		 840 r = log_set_max_level_from_string(optarg);
841 if (r < 0) {
f170852a
LP		 842 log_error("Failed to parse log level %s.", optarg);
843 return r;
844 }
845
846 break;
847
848 case ARG_LOG_TARGET:
fb472900
ZJS		 849 r = log_set_target_from_string(optarg);
850 if (r < 0) {
f170852a
LP		 851 log_error("Failed to parse log target %s.", optarg);
852 return r;
853 }
854
855 break;
856
bbe63281
LP		 857 case ARG_LOG_COLOR:
858
d0b170c8 859 if (optarg) {
fb472900
ZJS		 860 r = log_show_color_from_string(optarg);
861 if (r < 0) {
d0b170c8
LP		 862 log_error("Failed to parse log color setting %s.", optarg);
863 return r;
864 }
865 } else
866 log_show_color(true);
bbe63281
LP		 867
868 break;
869
870 case ARG_LOG_LOCATION:
d0b170c8 871 if (optarg) {
fb472900
ZJS		 872 r = log_show_location_from_string(optarg);
873 if (r < 0) {
d0b170c8
LP		 874 log_error("Failed to parse log location setting %s.", optarg);
875 return r;
876 }
877 } else
878 log_show_location(true);
bbe63281
LP		 879
880 break;
881
0a494f1f 882 case ARG_DEFAULT_STD_OUTPUT:
fb472900
ZJS		 883 r = exec_output_from_string(optarg);
884 if (r < 0) {
0a494f1f
LP		 885 log_error("Failed to parse default standard output setting %s.", optarg);
886 return r;
887 } else
888 arg_default_std_output = r;
889 break;
890
891 case ARG_DEFAULT_STD_ERROR:
fb472900
ZJS		 892 r = exec_output_from_string(optarg);
893 if (r < 0) {
0a494f1f
LP		 894 log_error("Failed to parse default standard error output setting %s.", optarg);
895 return r;
896 } else
897 arg_default_std_error = r;
898 break;
899
2f198e2f 900 case ARG_UNIT:
e6e242ad 901 r = free_and_strdup(&arg_default_unit, optarg);
23bbb0de
MS		 902 if (r < 0)
903 return log_error_errno(r, "Failed to set default unit %s: %m", optarg);
f170852a
LP		 904
905 break;
906
edb9aaa8 907 case ARG_SYSTEM:
463d0d15 908 arg_system = true;
edb9aaa8 909 break;
a5dab5ce 910
af2d49f7 911 case ARG_USER:
463d0d15 912 arg_system = false;
a5dab5ce 913 break;
a5dab5ce 914
e965d56d 915 case ARG_TEST:
fa0f4d8a 916 arg_action = ACTION_TEST;
b87c2aa6
ZJS		 917 break;
918
919 case ARG_NO_PAGER:
920 arg_no_pager = true;
e965d56d
LP		 921 break;
922
9ba0bc4e
ZJS		 923 case ARG_VERSION:
924 arg_action = ACTION_VERSION;
925 break;
926
e537352b 927 case ARG_DUMP_CONFIGURATION_ITEMS:
fa0f4d8a 928 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
e537352b
LP		 929 break;
930
bbc1acab
YW		 931 case ARG_DUMP_BUS_PROPERTIES:
932 arg_action = ACTION_DUMP_BUS_PROPERTIES;
933 break;
934
9e58ff9c 935 case ARG_DUMP_CORE:
b9e74c39
LP		 936 if (!optarg)
937 arg_dump_core = true;
938 else {
939 r = parse_boolean(optarg);
940 if (r < 0)
941 return log_error_errno(r, "Failed to parse dump core boolean: %s", optarg);
942 arg_dump_core = r;
a5d87bf0 943 }
b9e74c39
LP		 944 break;
945
946 case ARG_CRASH_CHVT:
947 r = parse_crash_chvt(optarg);
948 if (r < 0)
949 return log_error_errno(r, "Failed to parse crash virtual terminal index: %s", optarg);
9e58ff9c
LP		 950 break;
951
952 case ARG_CRASH_SHELL:
b9e74c39
LP		 953 if (!optarg)
954 arg_crash_shell = true;
955 else {
956 r = parse_boolean(optarg);
957 if (r < 0)
958 return log_error_errno(r, "Failed to parse crash shell boolean: %s", optarg);
959 arg_crash_shell = r;
960 }
961 break;
962
963 case ARG_CRASH_REBOOT:
964 if (!optarg)
965 arg_crash_reboot = true;
966 else {
967 r = parse_boolean(optarg);
968 if (r < 0)
969 return log_error_errno(r, "Failed to parse crash shell boolean: %s", optarg);
970 arg_crash_reboot = r;
a5d87bf0 971 }
9e58ff9c
LP		 972 break;
973
80876c20 974 case ARG_CONFIRM_SPAWN:
7d5ceb64
FB		 975 arg_confirm_spawn = mfree(arg_confirm_spawn);
976
977 r = parse_confirm_spawn(optarg, &arg_confirm_spawn);
978 if (r < 0)
979 return log_error_errno(r, "Failed to parse confirm spawn option: %m");
80876c20
LP		 980 break;
981
2a12e32e
JK		 982 case ARG_SERVICE_WATCHDOGS:
983 r = parse_boolean(optarg);
984 if (r < 0)
985 return log_error_errno(r, "Failed to parse service watchdogs boolean: %s", optarg);
986 arg_service_watchdogs = r;
987 break;
988
9e58ff9c 989 case ARG_SHOW_STATUS:
d450b6f2
ZJS		 990 if (optarg) {
991 r = parse_show_status(optarg, &arg_show_status);
992 if (r < 0) {
993 log_error("Failed to parse show status boolean %s.", optarg);
994 return r;
995 }
996 } else
997 arg_show_status = SHOW_STATUS_YES;
6e98720f 998 break;
a5d87bf0 999
a16e1123
LP		 1000 case ARG_DESERIALIZE: {
1001 int fd;
1002 FILE *f;
1003
01e10de3
LP		 1004 r = safe_atoi(optarg, &fd);
1005 if (r < 0 || fd < 0) {
a16e1123 1006 log_error("Failed to parse deserialize option %s.", optarg);
b9e74c39 1007 return -EINVAL;
a16e1123
LP		 1008 }
1009
b9e74c39 1010 (void) fd_cloexec(fd, true);
01e10de3
LP		 1011
1012 f = fdopen(fd, "r");
4a62c710
MS		 1013 if (!f)
1014 return log_error_errno(errno, "Failed to open serialization fd: %m");
a16e1123 1015
74ca738f 1016 safe_fclose(arg_serialization);
d3b1c508 1017 arg_serialization = f;
a16e1123
LP		 1018
1019 break;
1020 }
1021
2660882b 1022 case ARG_SWITCHED_ROOT:
bf4df7c3 1023 arg_switched_root = true;
d03bc1b8
HH		 1024 break;
1025
ee48dbd5
NC		 1026 case ARG_MACHINE_ID:
1027 r = set_machine_id(optarg);
54500613
LP		 1028 if (r < 0)
1029 return log_error_errno(r, "MachineID '%s' is not valid.", optarg);
ee48dbd5
NC		 1030 break;
1031
f170852a 1032 case 'h':
fa0f4d8a 1033 arg_action = ACTION_HELP;
f170852a
LP		 1034 break;
1035
1d2e23ab
LP		 1036 case 'D':
1037 log_set_max_level(LOG_DEBUG);
1038 break;
1039
099663ff
LP		 1040 case 'b':
1041 case 's':
1042 case 'z':
1043 /* Just to eat away the sysvinit kernel
1044 * cmdline args without getopt() error
1045 * messages that we'll parse in
1046 * parse_proc_cmdline_word() or ignore. */
f170852a 1047
099663ff 1048 case '?':
df0ff127 1049 if (getpid_cached() != 1)
099663ff 1050 return -EINVAL;
601185b4
ZJS		 1051 else
1052 return 0;
099663ff 1053
601185b4
ZJS		 1054 default:
1055 assert_not_reached("Unhandled option code.");
f170852a
LP		 1056 }
1057
df0ff127 1058 if (optind < argc && getpid_cached() != 1) {
d821e6d6
LP		 1059 /* Hmm, when we aren't run as init system
1060 * let's complain about excess arguments */
1061
1062 log_error("Excess arguments.");
1063 return -EINVAL;
1064 }
1065
f170852a
LP		 1066 return 0;
1067}
1068
1069static int help(void) {
1070
2e33c433 1071 printf("%s [OPTIONS...]\n\n"
af2d49f7 1072 "Starts up and maintains the system or user services.\n\n"
e537352b 1073 " -h --help Show this help\n"
cb4069d9 1074 " --version Show version\n"
e537352b 1075 " --test Determine startup sequence, dump it and exit\n"
b87c2aa6 1076 " --no-pager Do not pipe output into a pager\n"
80876c20 1077 " --dump-configuration-items Dump understood unit configuration items\n"
bbc1acab 1078 " --dump-bus-properties Dump exposed bus properties\n"
9e58ff9c 1079 " --unit=UNIT Set default unit\n"
edb9aaa8 1080 " --system Run a system instance, even if PID != 1\n"
af2d49f7 1081 " --user Run a user instance\n"
b9e74c39
LP		 1082 " --dump-core[=BOOL] Dump core on crash\n"
1083 " --crash-vt=NR Change to specified VT on crash\n"
1084 " --crash-reboot[=BOOL] Reboot on crash\n"
1085 " --crash-shell[=BOOL] Run shell on crash\n"
1086 " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n"
1087 " --show-status[=BOOL] Show status updates on the console during bootup\n"
c1dc6153 1088 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
9e58ff9c 1089 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
b9e74c39
LP		 1090 " --log-color[=BOOL] Highlight important log messages\n"
1091 " --log-location[=BOOL] Include code location in log messages\n"
0a494f1f
LP		 1092 " --default-standard-output= Set default standard output for services\n"
1093 " --default-standard-error= Set default standard error output for services\n",
5b6319dc 1094 program_invocation_short_name);
f170852a
LP		 1095
1096 return 0;
1097}
1098
b3680f49 1099static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) {
48b90859
LP		 1100 _cleanup_fdset_free_ FDSet *fds = NULL;
1101 _cleanup_fclose_ FILE *f = NULL;
a16e1123
LP		 1102 int r;
1103
1104 assert(m);
1105 assert(_f);
1106 assert(_fds);
1107
6b78f9b4 1108 r = manager_open_serialization(m, &f);
48b90859
LP		 1109 if (r < 0)
1110 return log_error_errno(r, "Failed to create serialization file: %m");
a16e1123 1111
71445ae7 1112 /* Make sure nothing is really destructed when we shut down */
313cefa1 1113 m->n_reloading++;
718db961 1114 bus_manager_send_reloading(m, true);
71445ae7 1115
6b78f9b4 1116 fds = fdset_new();
48b90859
LP		 1117 if (!fds)
1118 return log_oom();
a16e1123 1119
b3680f49 1120 r = manager_serialize(m, f, fds, switching_root);
48b90859
LP		 1121 if (r < 0)
1122 return log_error_errno(r, "Failed to serialize state: %m");
a16e1123 1123
48b90859
LP		 1124 if (fseeko(f, 0, SEEK_SET) == (off_t) -1)
1125 return log_error_errno(errno, "Failed to rewind serialization fd: %m");
a16e1123 1126
6b78f9b4 1127 r = fd_cloexec(fileno(f), false);
48b90859
LP		 1128 if (r < 0)
1129 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m");
a16e1123 1130
6b78f9b4 1131 r = fdset_cloexec(fds, false);
48b90859
LP		 1132 if (r < 0)
1133 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m");
a16e1123 1134
1cc6c93a
YW		 1135 *_f = TAKE_PTR(f);
1136 *_fds = TAKE_PTR(fds);
a16e1123 1137
48b90859 1138 return 0;
a16e1123
LP		 1139}
1140
4096d6f5 1141static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
9264cc39 1142 int r, nr;
4096d6f5
LP		 1143
1144 assert(saved_rlimit);
1145
1146 /* Save the original RLIMIT_NOFILE so that we can reset it
1147 * later when transitioning from the initrd to the main
1148 * systemd or suchlike. */
4a62c710 1149 if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0)
3ce40911 1150 return log_warning_errno(errno, "Reading RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5
LP		 1151
1152 /* Make sure forked processes get the default kernel setting */
1153 if (!arg_default_rlimit[RLIMIT_NOFILE]) {
1154 struct rlimit *rl;
1155
1156 rl = newdup(struct rlimit, saved_rlimit, 1);
1157 if (!rl)
1158 return log_oom();
1159
1160 arg_default_rlimit[RLIMIT_NOFILE] = rl;
1161 }
1162
9264cc39
LP		 1163 /* Bump up the resource limit for ourselves substantially, all the way to the maximum the kernel allows */
1164 nr = read_nr_open();
1165 r = setrlimit_closest(RLIMIT_NOFILE, &RLIMIT_MAKE_CONST(nr));
23bbb0de 1166 if (r < 0)
3ce40911 1167 return log_warning_errno(r, "Setting RLIMIT_NOFILE failed, ignoring: %m");
4096d6f5
LP		 1168
1169 return 0;
1170}
1171
fb3ae275
LP		 1172static int bump_rlimit_memlock(struct rlimit *saved_rlimit) {
1173 int r;
1174
1175 assert(saved_rlimit);
1176 assert(getuid() == 0);
1177
1178 /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even though we have CAP_IPC_LOCK which
1179 * should normally disable such checks. We need them to implement IPAccessAllow= and IPAccessDeny=, hence let's
1180 * bump the value high enough for the root user. */
1181
1182 if (getrlimit(RLIMIT_MEMLOCK, saved_rlimit) < 0)
1183 return log_warning_errno(errno, "Reading RLIMIT_MEMLOCK failed, ignoring: %m");
1184
1185 r = setrlimit_closest(RLIMIT_MEMLOCK, &RLIMIT_MAKE_CONST(1024ULL*1024ULL*16ULL));
1186 if (r < 0)
1187 return log_warning_errno(r, "Setting RLIMIT_MEMLOCK failed, ignoring: %m");
1188
1189 return 0;
1190}
1191
80758717 1192static void test_usr(void) {
80758717 1193
ed1c99fc 1194 /* Check that /usr is not a separate fs */
80758717 1195
871c44a7
LP		 1196 if (dir_is_empty("/usr") <= 0)
1197 return;
1198
8b173b5e 1199 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
871c44a7
LP		 1200 "Some things will probably break (sometimes even silently) in mysterious ways. "
1201 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1202}
1203
d3b1c508 1204static int enforce_syscall_archs(Set *archs) {
349cc4a5 1205#if HAVE_SECCOMP
d3b1c508
LP		 1206 int r;
1207
83f12b27
FS		 1208 if (!is_seccomp_available())
1209 return 0;
1210
469830d1 1211 r = seccomp_restrict_archs(arg_syscall_archs);
d3b1c508 1212 if (r < 0)
469830d1 1213 return log_error_errno(r, "Failed to enforce system call architecture restrication: %m");
d3b1c508 1214#endif
469830d1 1215 return 0;
d3b1c508
LP		 1216}
1217
b6e2f329
LP		 1218static int status_welcome(void) {
1219 _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
1220 int r;
1221
fd8c85c6
LP		 1222 if (arg_show_status <= 0)
1223 return 0;
1224
d58ad743
LP		 1225 r = parse_os_release(NULL,
1226 "PRETTY_NAME", &pretty_name,
1227 "ANSI_COLOR", &ansi_color,
1228 NULL);
1229 if (r < 0)
1230 log_full_errno(r == -ENOENT ? LOG_DEBUG : LOG_WARNING, r,
1231 "Failed to read os-release file, ignoring: %m");
b6e2f329 1232
dc9b5816
ZJS		 1233 if (log_get_show_color())
1234 return status_printf(NULL, false, false,
1235 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1236 isempty(ansi_color) ? "1" : ansi_color,
1237 isempty(pretty_name) ? "Linux" : pretty_name);
1238 else
1239 return status_printf(NULL, false, false,
1240 "\nWelcome to %s!\n",
1241 isempty(pretty_name) ? "Linux" : pretty_name);
b6e2f329
LP		 1242}
1243
fdd25311
LP		 1244static int write_container_id(void) {
1245 const char *c;
19854865 1246 int r;
fdd25311
LP		 1247
1248 c = getenv("container");
1249 if (isempty(c))
1250 return 0;
1251
8612da97
LP		 1252 RUN_WITH_UMASK(0022)
1253 r = write_string_file("/run/systemd/container", c, WRITE_STRING_FILE_CREATE);
19854865 1254 if (r < 0)
f1f849b0 1255 return log_warning_errno(r, "Failed to write /run/systemd/container, ignoring: %m");
19854865
LP		 1256
1257 return 1;
1258}
1259
1260static int bump_unix_max_dgram_qlen(void) {
1261 _cleanup_free_ char *qlen = NULL;
1262 unsigned long v;
1263 int r;
1264
3130fca5
LP		 1265 /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel default of 16 is simply too low. We set the value
1266 * really really early during boot, so that it is actually applied to all our sockets, including the
1267 * $NOTIFY_SOCKET one. */
19854865
LP		 1268
1269 r = read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen);
1270 if (r < 0)
1271 return log_warning_errno(r, "Failed to read AF_UNIX datagram queue length, ignoring: %m");
1272
1273 r = safe_atolu(qlen, &v);
1274 if (r < 0)
3130fca5 1275 return log_warning_errno(r, "Failed to parse AF_UNIX datagram queue length '%s', ignoring: %m", qlen);
19854865
LP		 1276
1277 if (v >= DEFAULT_UNIX_MAX_DGRAM_QLEN)
1278 return 0;
1279
3130fca5 1280 r = write_string_filef("/proc/sys/net/unix/max_dgram_qlen", 0, "%lu", DEFAULT_UNIX_MAX_DGRAM_QLEN);
19854865
LP		 1281 if (r < 0)
1282 return log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
1283 "Failed to bump AF_UNIX datagram queue length, ignoring: %m");
1284
1285 return 1;
fdd25311
LP		 1286}
1287
32391275
FB		 1288static int fixup_environment(void) {
1289 _cleanup_free_ char *term = NULL;
4dc63c4b 1290 const char *t;
32391275
FB		 1291 int r;
1292
43db615b
LP		 1293 /* Only fix up the environment when we are started as PID 1 */
1294 if (getpid_cached() != 1)
1295 return 0;
1296
1297 /* We expect the environment to be set correctly if run inside a container. */
84af7821
LP		 1298 if (detect_container() > 0)
1299 return 0;
1300
43db615b
LP		 1301 /* When started as PID1, the kernel uses /dev/console for our stdios and uses TERM=linux whatever the backend
1302 * device used by the console. We try to make a better guess here since some consoles might not have support
1303 * for color mode for example.
32391275 1304 *
43db615b 1305 * However if TERM was configured through the kernel command line then leave it alone. */
1d84ad94 1306 r = proc_cmdline_get_key("TERM", 0, &term);
32391275
FB		 1307 if (r < 0)
1308 return r;
32391275 1309
4dc63c4b
LP		 1310 t = term ?: default_term_for_tty("/dev/console");
1311
1312 if (setenv("TERM", t, 1) < 0)
32391275
FB		 1313 return -errno;
1314
1315 return 0;
1316}
1317
6808a0bc
LP		 1318static void redirect_telinit(int argc, char *argv[]) {
1319
1320 /* This is compatibility support for SysV, where calling init as a user is identical to telinit. */
1321
1322#if HAVE_SYSV_COMPAT
1323 if (getpid_cached() == 1)
1324 return;
1325
1326 if (!strstr(program_invocation_short_name, "init"))
1327 return;
1328
1329 execv(SYSTEMCTL_BINARY_PATH, argv);
1330 log_error_errno(errno, "Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
a45d7127 1331 exit(EXIT_FAILURE);
6808a0bc
LP		 1332#endif
1333}
1334
4a36297c
LP		 1335static int become_shutdown(
1336 const char *shutdown_verb,
7eb35049 1337 int retval) {
4a36297c
LP		 1338
1339 char log_level[DECIMAL_STR_MAX(int) + 1],
e73c54b8
JK		 1340 exit_code[DECIMAL_STR_MAX(uint8_t) + 1],
1341 timeout[DECIMAL_STR_MAX(usec_t) + 1];
4a36297c 1342
e73c54b8 1343 const char* command_line[13] = {
4a36297c
LP		 1344 SYSTEMD_SHUTDOWN_BINARY_PATH,
1345 shutdown_verb,
e73c54b8 1346 "--timeout", timeout,
4a36297c
LP		 1347 "--log-level", log_level,
1348 "--log-target",
1349 };
1350
1351 _cleanup_strv_free_ char **env_block = NULL;
e73c54b8 1352 size_t pos = 7;
4a36297c
LP		 1353 int r;
1354
7eb35049 1355 assert(shutdown_verb);
234519ae 1356 assert(!command_line[pos]);
4a36297c
LP		 1357 env_block = strv_copy(environ);
1358
1359 xsprintf(log_level, "%d", log_get_max_level());
e73c54b8 1360 xsprintf(timeout, "%" PRI_USEC "us", arg_default_timeout_stop_usec);
4a36297c
LP		 1361
1362 switch (log_get_target()) {
1363
1364 case LOG_TARGET_KMSG:
1365 case LOG_TARGET_JOURNAL_OR_KMSG:
1366 case LOG_TARGET_SYSLOG_OR_KMSG:
1367 command_line[pos++] = "kmsg";
1368 break;
1369
1370 case LOG_TARGET_NULL:
1371 command_line[pos++] = "null";
1372 break;
1373
1374 case LOG_TARGET_CONSOLE:
1375 default:
1376 command_line[pos++] = "console";
1377 break;
1378 };
1379
1380 if (log_get_show_color())
1381 command_line[pos++] = "--log-color";
1382
1383 if (log_get_show_location())
1384 command_line[pos++] = "--log-location";
1385
1386 if (streq(shutdown_verb, "exit")) {
1387 command_line[pos++] = "--exit-code";
1388 command_line[pos++] = exit_code;
1389 xsprintf(exit_code, "%d", retval);
1390 }
1391
1392 assert(pos < ELEMENTSOF(command_line));
1393
7eb35049
LP		 1394 if (streq(shutdown_verb, "reboot") &&
1395 arg_shutdown_watchdog > 0 &&
1396 arg_shutdown_watchdog != USEC_INFINITY) {
1397
4a36297c
LP		 1398 char *e;
1399
1400 /* If we reboot let's set the shutdown
1401 * watchdog and tell the shutdown binary to
1402 * repeatedly ping it */
1403 r = watchdog_set_timeout(&arg_shutdown_watchdog);
1404 watchdog_close(r < 0);
1405
1406 /* Tell the binary how often to ping, ignore failure */
1407 if (asprintf(&e, "WATCHDOG_USEC="USEC_FMT, arg_shutdown_watchdog) > 0)
8a2c1fbf
EJ		 1408 (void) strv_consume(&env_block, e);
1409
1410 if (arg_watchdog_device &&
1411 asprintf(&e, "WATCHDOG_DEVICE=%s", arg_watchdog_device) > 0)
1412 (void) strv_consume(&env_block, e);
4a36297c
LP		 1413 } else
1414 watchdog_close(true);
1415
1416 /* Avoid the creation of new processes forked by the
1417 * kernel; at this point, we will not listen to the
1418 * signals anyway */
1419 if (detect_container() <= 0)
1420 (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
1421
1422 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
1423 return -errno;
1424}
1425
e839bafd
LP		 1426static void initialize_clock(void) {
1427 int r;
1428
1429 if (clock_is_localtime(NULL) > 0) {
1430 int min;
1431
1432 /*
1433 * The very first call of settimeofday() also does a time warp in the kernel.
1434 *
1435 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on external tools to take care
1436 * of maintaining the RTC and do all adjustments. This matches the behavior of Windows, which leaves
1437 * the RTC alone if the registry tells that the RTC runs in UTC.
1438 */
1439 r = clock_set_timezone(&min);
1440 if (r < 0)
1441 log_error_errno(r, "Failed to apply local time delta, ignoring: %m");
1442 else
1443 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
1444
1445 } else if (!in_initrd()) {
1446 /*
1447 * Do a dummy very first call to seal the kernel's time warp magic.
1448 *
1449 * Do not call this from inside the initrd. The initrd might not carry /etc/adjtime with LOCAL, but the
1450 * real system could be set up that way. In such case, we need to delay the time-warp or the sealing
1451 * until we reach the real system.
1452 *
1453 * Do no set the kernel's timezone. The concept of local time cannot be supported reliably, the time
1454 * will jump or be incorrect at every daylight saving time change. All kernel local time concepts will
1455 * be treated as UTC that way.
1456 */
1457 (void) clock_reset_timewarp();
1458 }
1459
1460 r = clock_apply_epoch();
1461 if (r < 0)
1462 log_error_errno(r, "Current system time is before build time, but cannot correct: %m");
1463 else if (r > 0)
1464 log_info("System time before build time, advancing clock.");
1465}
1466
1e41242e 1467static void initialize_coredump(bool skip_setup) {
752bcb77 1468#if ENABLE_COREDUMP
1e41242e
LP		 1469 if (getpid_cached() != 1)
1470 return;
1471
1472 /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour the limit)
1473 * will process core dumps for system services by default. */
1474 if (setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY)) < 0)
1475 log_warning_errno(errno, "Failed to set RLIMIT_CORE: %m");
1476
1477 /* But at the same time, turn off the core_pattern logic by default, so that no coredumps are stored
1478 * until the systemd-coredump tool is enabled via sysctl. */
1479 if (!skip_setup)
e557b1a6 1480 disable_coredumps();
752bcb77 1481#endif
1e41242e
LP		 1482}
1483
3c7878f9
LP		 1484static void do_reexecute(
1485 int argc,
1486 char *argv[],
1487 const struct rlimit *saved_rlimit_nofile,
1488 const struct rlimit *saved_rlimit_memlock,
1489 FDSet *fds,
1490 const char *switch_root_dir,
1491 const char *switch_root_init,
1492 const char **ret_error_message) {
1493
1494 unsigned i, j, args_size;
1495 const char **args;
1496 int r;
1497
1498 assert(saved_rlimit_nofile);
1499 assert(saved_rlimit_memlock);
1500 assert(ret_error_message);
1501
1502 /* Close and disarm the watchdog, so that the new instance can reinitialize it, but doesn't get rebooted while
1503 * we do that */
1504 watchdog_close(true);
1505
1506 /* Reset the RLIMIT_NOFILE to the kernel default, so that the new systemd can pass the kernel default to its
1507 * child processes */
1508
1509 if (saved_rlimit_nofile->rlim_cur > 0)
1510 (void) setrlimit(RLIMIT_NOFILE, saved_rlimit_nofile);
1511 if (saved_rlimit_memlock->rlim_cur != (rlim_t) -1)
1512 (void) setrlimit(RLIMIT_MEMLOCK, saved_rlimit_memlock);
1513
1514 if (switch_root_dir) {
1515 /* Kill all remaining processes from the initrd, but don't wait for them, so that we can handle the
1516 * SIGCHLD for them after deserializing. */
e73c54b8 1517 broadcast_signal(SIGTERM, false, true, arg_default_timeout_stop_usec);
3c7878f9
LP		 1518
1519 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1520 r = switch_root(switch_root_dir, "/mnt", true, MS_MOVE);
1521 if (r < 0)
1522 log_error_errno(r, "Failed to switch root, trying to continue: %m");
1523 }
1524
1525 args_size = MAX(6, argc+1);
1526 args = newa(const char*, args_size);
1527
1528 if (!switch_root_init) {
1529 char sfd[DECIMAL_STR_MAX(int) + 1];
1530
1531 /* First try to spawn ourselves with the right path, and with full serialization. We do this only if
1532 * the user didn't specify an explicit init to spawn. */
1533
1534 assert(arg_serialization);
1535 assert(fds);
1536
1537 xsprintf(sfd, "%i", fileno(arg_serialization));
1538
1539 i = 0;
1540 args[i++] = SYSTEMD_BINARY_PATH;
1541 if (switch_root_dir)
1542 args[i++] = "--switched-root";
1543 args[i++] = arg_system ? "--system" : "--user";
1544 args[i++] = "--deserialize";
1545 args[i++] = sfd;
1546 args[i++] = NULL;
1547
1548 assert(i <= args_size);
1549
1550 /*
1551 * We want valgrind to print its memory usage summary before reexecution. Valgrind won't do this is on
1552 * its own on exec(), but it will do it on exit(). Hence, to ensure we get a summary here, fork() off
1553 * a child, let it exit() cleanly, so that it prints the summary, and wait() for it in the parent,
1554 * before proceeding into the exec().
1555 */
1556 valgrind_summary_hack();
1557
1558 (void) execv(args[0], (char* const*) args);
1559 log_debug_errno(errno, "Failed to execute our own binary, trying fallback: %m");
1560 }
1561
1562 /* Try the fallback, if there is any, without any serialization. We pass the original argv[] and envp[]. (Well,
1563 * modulo the ordering changes due to getopt() in argv[], and some cleanups in envp[], but let's hope that
1564 * doesn't matter.) */
1565
1566 arg_serialization = safe_fclose(arg_serialization);
1567 fds = fdset_free(fds);
1568
1569 /* Reopen the console */
1570 (void) make_console_stdio();
1571
1572 for (j = 1, i = 1; j < (unsigned) argc; j++)
1573 args[i++] = argv[j];
1574 args[i++] = NULL;
1575 assert(i <= args_size);
1576
1577 /* Reenable any blocked signals, especially important if we switch from initial ramdisk to init=... */
1578 (void) reset_all_signal_handlers();
1579 (void) reset_signal_mask();
1580
1581 if (switch_root_init) {
1582 args[0] = switch_root_init;
1583 (void) execv(args[0], (char* const*) args);
1584 log_warning_errno(errno, "Failed to execute configured init, trying fallback: %m");
1585 }
1586
1587 args[0] = "/sbin/init";
1588 (void) execv(args[0], (char* const*) args);
1589 r = -errno;
1590
1591 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1592 ANSI_HIGHLIGHT_RED " !! " ANSI_NORMAL,
1593 "Failed to execute /sbin/init");
1594
1595 if (r == -ENOENT) {
1596 log_warning("No /sbin/init, trying fallback");
1597
1598 args[0] = "/bin/sh";
1599 args[1] = NULL;
1600 (void) execv(args[0], (char* const*) args);
1601 log_error_errno(errno, "Failed to execute /bin/sh, giving up: %m");
1602 } else
1603 log_warning_errno(r, "Failed to execute /sbin/init, giving up: %m");
1604
1605 *ret_error_message = "Failed to execute fallback shell";
1606}
1607
7eb35049
LP		 1608static int invoke_main_loop(
1609 Manager *m,
1610 bool *ret_reexecute,
1611 int *ret_retval, /* Return parameters relevant for shutting down */
1612 const char **ret_shutdown_verb, /* … */
1613 FDSet **ret_fds, /* Return parameters for reexecuting */
1614 char **ret_switch_root_dir, /* … */
1615 char **ret_switch_root_init, /* … */
1616 const char **ret_error_message) {
1617
1618 int r;
1619
1620 assert(m);
1621 assert(ret_reexecute);
1622 assert(ret_retval);
1623 assert(ret_shutdown_verb);
1624 assert(ret_fds);
1625 assert(ret_switch_root_dir);
1626 assert(ret_switch_root_init);
1627 assert(ret_error_message);
1628
1629 for (;;) {
1630 r = manager_loop(m);
1631 if (r < 0) {
1632 *ret_error_message = "Failed to run main loop";
1633 return log_emergency_errno(r, "Failed to run main loop: %m");
1634 }
1635
1636 switch (m->exit_code) {
1637
a6ecbf83 1638 case MANAGER_RELOAD: {
bda7d78b 1639 LogTarget saved_log_target;
a6ecbf83
FB		 1640 int saved_log_level;
1641
7eb35049
LP		 1642 log_info("Reloading.");
1643
bda7d78b
FB		 1644 /* First, save any overriden log level/target, then parse the configuration file, which might
1645 * change the log level to new settings. */
1646
a6ecbf83 1647 saved_log_level = m->log_level_overridden ? log_get_max_level() : -1;
bda7d78b 1648 saved_log_target = m->log_target_overridden ? log_get_target() : _LOG_TARGET_INVALID;
a6ecbf83 1649
7eb35049
LP		 1650 r = parse_config_file();
1651 if (r < 0)
1652 log_warning_errno(r, "Failed to parse config file, ignoring: %m");
1653
1654 set_manager_defaults(m);
1655
a6ecbf83
FB		 1656 if (saved_log_level >= 0)
1657 manager_override_log_level(m, saved_log_level);
bda7d78b
FB		 1658 if (saved_log_target >= 0)
1659 manager_override_log_target(m, saved_log_target);
a6ecbf83 1660
7eb35049
LP		 1661 r = manager_reload(m);
1662 if (r < 0)
1663 log_warning_errno(r, "Failed to reload, ignoring: %m");
1664
1665 break;
a6ecbf83 1666 }
7eb35049
LP		 1667
1668 case MANAGER_REEXECUTE:
1669
1670 r = prepare_reexecute(m, &arg_serialization, ret_fds, false);
1671 if (r < 0) {
1672 *ret_error_message = "Failed to prepare for reexecution";
1673 return r;
1674 }
1675
1676 log_notice("Reexecuting.");
1677
1678 *ret_reexecute = true;
1679 *ret_retval = EXIT_SUCCESS;
1680 *ret_shutdown_verb = NULL;
1681 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1682
1683 return 0;
1684
1685 case MANAGER_SWITCH_ROOT:
1686 if (!m->switch_root_init) {
1687 r = prepare_reexecute(m, &arg_serialization, ret_fds, true);
1688 if (r < 0) {
1689 *ret_error_message = "Failed to prepare for reexecution";
1690 return r;
1691 }
1692 } else
1693 *ret_fds = NULL;
1694
1695 log_notice("Switching root.");
1696
1697 *ret_reexecute = true;
1698 *ret_retval = EXIT_SUCCESS;
1699 *ret_shutdown_verb = NULL;
1700
1701 /* Steal the switch root parameters */
1702 *ret_switch_root_dir = m->switch_root;
1703 *ret_switch_root_init = m->switch_root_init;
1704 m->switch_root = m->switch_root_init = NULL;
1705
1706 return 0;
1707
1708 case MANAGER_EXIT:
1709
1710 if (MANAGER_IS_USER(m)) {
1711 log_debug("Exit.");
1712
1713 *ret_reexecute = false;
1714 *ret_retval = m->return_value;
1715 *ret_shutdown_verb = NULL;
1716 *ret_fds = NULL;
1717 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1718
1719 return 0;
1720 }
1721
1722 _fallthrough_;
1723 case MANAGER_REBOOT:
1724 case MANAGER_POWEROFF:
1725 case MANAGER_HALT:
1726 case MANAGER_KEXEC: {
1727 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1728 [MANAGER_EXIT] = "exit",
1729 [MANAGER_REBOOT] = "reboot",
1730 [MANAGER_POWEROFF] = "poweroff",
1731 [MANAGER_HALT] = "halt",
1732 [MANAGER_KEXEC] = "kexec"
1733 };
1734
1735 log_notice("Shutting down.");
1736
1737 *ret_reexecute = false;
1738 *ret_retval = m->return_value;
1739 assert_se(*ret_shutdown_verb = table[m->exit_code]);
1740 *ret_fds = NULL;
1741 *ret_switch_root_dir = *ret_switch_root_init = NULL;
1742
1743 return 0;
1744 }
1745
1746 default:
1747 assert_not_reached("Unknown exit code.");
1748 }
1749 }
1750}
1751
31aef7ff
LP		 1752static void log_execution_mode(bool *ret_first_boot) {
1753 assert(ret_first_boot);
1754
1755 if (arg_system) {
1756 int v;
1757
1758 log_info(PACKAGE_STRING " running in %ssystem mode. (" SYSTEMD_FEATURES ")",
1759 arg_action == ACTION_TEST ? "test " : "" );
1760
1761 v = detect_virtualization();
1762 if (v > 0)
1763 log_info("Detected virtualization %s.", virtualization_to_string(v));
1764
1765 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1766
1767 if (in_initrd()) {
1768 *ret_first_boot = false;
1769 log_info("Running in initial RAM disk.");
1770 } else {
1771 /* Let's check whether we are in first boot, i.e. whether /etc is still unpopulated. We use
1772 * /etc/machine-id as flag file, for this: if it exists we assume /etc is populated, if it
1773 * doesn't it's unpopulated. This allows container managers and installers to provision a
1774 * couple of files already. If the container manager wants to provision the machine ID itself
1775 * it should pass $container_uuid to PID 1. */
1776
1777 *ret_first_boot = access("/etc/machine-id", F_OK) < 0;
1778 if (*ret_first_boot)
1779 log_info("Running with unpopulated /etc.");
1780 }
1781 } else {
b9e90f3a
LP		 1782 if (DEBUG_LOGGING) {
1783 _cleanup_free_ char *t;
31aef7ff 1784
b9e90f3a
LP		 1785 t = uid_to_name(getuid());
1786 log_debug(PACKAGE_STRING " running in %suser mode for user " UID_FMT "/%s. (" SYSTEMD_FEATURES ")",
1787 arg_action == ACTION_TEST ? " test" : "", getuid(), strna(t));
1788 }
31aef7ff
LP		 1789
1790 *ret_first_boot = false;
1791 }
1792}
1793
5afbaa36
LP		 1794static int initialize_runtime(
1795 bool skip_setup,
1796 struct rlimit *saved_rlimit_nofile,
1797 struct rlimit *saved_rlimit_memlock,
1798 const char **ret_error_message) {
1799
1800 int r;
1801
1802 assert(ret_error_message);
1803
1804 /* Sets up various runtime parameters. Many of these initializations are conditionalized:
1805 *
1806 * - Some only apply to --system instances
1807 * - Some only apply to --user instances
1808 * - Some only apply when we first start up, but not when we reexecute
1809 */
1810
2d776038
LP		 1811 if (arg_action != ACTION_RUN)
1812 return 0;
1813
3c3c6cb9
LP		 1814 if (arg_system) {
1815 /* Make sure we leave a core dump without panicing the kernel. */
1816 install_crash_handler();
5afbaa36 1817
3c3c6cb9
LP		 1818 if (!skip_setup) {
1819 r = mount_cgroup_controllers(arg_join_controllers);
1820 if (r < 0) {
1821 *ret_error_message = "Failed to mount cgroup hierarchies";
1822 return r;
1823 }
1824
1825 status_welcome();
1826 hostname_setup();
1827 machine_id_setup(NULL, arg_machine_id, NULL);
1828 loopback_setup();
1829 bump_unix_max_dgram_qlen();
1830 test_usr();
1831 write_container_id();
1832 }
8a2c1fbf 1833
3c3c6cb9
LP		 1834 if (arg_watchdog_device) {
1835 r = watchdog_set_device(arg_watchdog_device);
1836 if (r < 0)
1837 log_warning_errno(r, "Failed to set watchdog device to %s, ignoring: %m", arg_watchdog_device);
1838 }
1839
1840 if (arg_runtime_watchdog > 0 && arg_runtime_watchdog != USEC_INFINITY)
1841 watchdog_set_timeout(&arg_runtime_watchdog);
1842 }
5afbaa36
LP		 1843
1844 if (arg_timer_slack_nsec != NSEC_INFINITY)
1845 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
3a671cd1 1846 log_warning_errno(errno, "Failed to adjust timer slack, ignoring: %m");
5afbaa36
LP		 1847
1848 if (arg_system && !cap_test_all(arg_capability_bounding_set)) {
1849 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set);
1850 if (r < 0) {
1851 *ret_error_message = "Failed to drop capability bounding set of usermode helpers";
1852 return log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m");
1853 }
1854
1855 r = capability_bounding_set_drop(arg_capability_bounding_set, true);
1856 if (r < 0) {
1857 *ret_error_message = "Failed to drop capability bounding set";
1858 return log_emergency_errno(r, "Failed to drop capability bounding set: %m");
1859 }
1860 }
1861
39362f6f
JB		 1862 if (arg_system && arg_no_new_privs) {
1863 if (prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) < 0) {
1864 *ret_error_message = "Failed to disable new privileges";
1865 return log_emergency_errno(errno, "Failed to disable new privileges: %m");
1866 }
1867 }
1868
5afbaa36
LP		 1869 if (arg_syscall_archs) {
1870 r = enforce_syscall_archs(arg_syscall_archs);
1871 if (r < 0) {
1872 *ret_error_message = "Failed to set syscall architectures";
1873 return r;
1874 }
1875 }
1876
1877 if (!arg_system)
1878 /* Become reaper of our children */
1879 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0)
1880 log_warning_errno(errno, "Failed to make us a subreaper: %m");
1881
1882 if (arg_system) {
1883 /* Bump up RLIMIT_NOFILE for systemd itself */
1884 (void) bump_rlimit_nofile(saved_rlimit_nofile);
1885 (void) bump_rlimit_memlock(saved_rlimit_memlock);
1886 }
1887
1888 return 0;
1889}
1890
6acca5fc
LP		 1891static int do_queue_default_job(
1892 Manager *m,
1893 const char **ret_error_message) {
1894
1895 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1896 Job *default_unit_job;
1897 Unit *target = NULL;
1898 int r;
1899
1900 log_debug("Activating default unit: %s", arg_default_unit);
1901
4109ede7
ZJS		 1902 r = manager_load_startable_unit_or_warn(m, arg_default_unit, NULL, &target);
1903 if (r < 0) {
1904 log_info("Falling back to rescue target: " SPECIAL_RESCUE_TARGET);
6acca5fc 1905
4109ede7 1906 r = manager_load_startable_unit_or_warn(m, SPECIAL_RESCUE_TARGET, NULL, &target);
6acca5fc 1907 if (r < 0) {
4109ede7
ZJS		 1908 *ret_error_message = r == -ERFKILL ? "Rescue target masked"
1909 : "Failed to load rescue target";
1910 return r;
6acca5fc
LP		 1911 }
1912 }
1913
1914 assert(target->load_state == UNIT_LOADED);
1915
1916 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, &error, &default_unit_job);
1917 if (r == -EPERM) {
1918 log_debug_errno(r, "Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
1919
1920 sd_bus_error_free(&error);
1921
1922 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, &error, &default_unit_job);
1923 if (r < 0) {
1924 *ret_error_message = "Failed to start default target";
1925 return log_emergency_errno(r, "Failed to start default target: %s", bus_error_message(&error, r));
1926 }
1927
1928 } else if (r < 0) {
1929 *ret_error_message = "Failed to isolate default target";
1930 return log_emergency_errno(r, "Failed to isolate default target: %s", bus_error_message(&error, r));
1931 }
1932
1933 m->default_unit_job_id = default_unit_job->id;
1934
1935 return 0;
1936}
1937
970777b5 1938static void free_arguments(void) {
970777b5
LP		 1939
1940 /* Frees all arg_* variables, with the exception of arg_serialization */
ef59409f 1941 rlimit_free_all(arg_default_rlimit);
970777b5
LP		 1942
1943 arg_default_unit = mfree(arg_default_unit);
1944 arg_confirm_spawn = mfree(arg_confirm_spawn);
1945 arg_join_controllers = strv_free_free(arg_join_controllers);
1946 arg_default_environment = strv_free(arg_default_environment);
1947 arg_syscall_archs = set_free(arg_syscall_archs);
1948}
1949
97d1fb94
LP		 1950static int load_configuration(int argc, char **argv, const char **ret_error_message) {
1951 int r;
1952
1953 assert(ret_error_message);
1954
1955 arg_default_tasks_max = system_tasks_max_scale(DEFAULT_TASKS_MAX_PERCENTAGE, 100U);
1956
1957 r = parse_config_file();
1958 if (r < 0) {
1959 *ret_error_message = "Failed to parse config file";
1960 return r;
1961 }
1962
1963 if (arg_system) {
1964 r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
1965 if (r < 0)
1966 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
1967 }
1968
1969 /* Note that this also parses bits from the kernel command line, including "debug". */
1970 log_parse_environment();
1971
1972 r = parse_argv(argc, argv);
1973 if (r < 0) {
1974 *ret_error_message = "Failed to parse commandline arguments";
1975 return r;
1976 }
1977
1978 /* Initialize default unit */
1979 if (!arg_default_unit) {
1980 arg_default_unit = strdup(SPECIAL_DEFAULT_TARGET);
1981 if (!arg_default_unit) {
1982 *ret_error_message = "Failed to set default unit";
1983 return log_oom();
1984 }
1985 }
1986
db33214b
LP		 1987 /* Initialize the show status setting if it hasn't been set explicitly yet */
1988 if (arg_show_status == _SHOW_STATUS_UNSET)
1989 arg_show_status = SHOW_STATUS_YES;
1990
97d1fb94
LP		 1991 return 0;
1992}
1993
b0d7c989
LP		 1994static int safety_checks(void) {
1995
febf46a4
LP		 1996 if (getpid_cached() == 1 &&
1997 arg_action != ACTION_RUN) {
1998 log_error("Unsupported execution mode while PID 1.");
1999 return -EPERM;
2000 }
2001
2002 if (getpid_cached() == 1 &&
2003 !arg_system) {
2004 log_error("Can't run --user mode as PID 1.");
2005 return -EPERM;
2006 }
2007
2008 if (arg_action == ACTION_RUN &&
2009 arg_system &&
2010 getpid_cached() != 1) {
2011 log_error("Can't run system mode unless PID 1.");
2012 return -EPERM;
2013 }
2014
b0d7c989
LP		 2015 if (arg_action == ACTION_TEST &&
2016 geteuid() == 0) {
2017 log_error("Don't run test mode as root.");
2018 return -EPERM;
2019 }
2020
2021 if (!arg_system &&
2022 arg_action == ACTION_RUN &&
2023 sd_booted() <= 0) {
2024 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
2025 return -EOPNOTSUPP;
2026 }
2027
2028 if (!arg_system &&
2029 arg_action == ACTION_RUN &&
2030 !getenv("XDG_RUNTIME_DIR")) {
2031 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
2032 return -EUNATCH;
2033 }
2034
2035 if (arg_system &&
2036 arg_action == ACTION_RUN &&
2037 running_in_chroot() > 0) {
2038 log_error("Cannot be run in a chroot() environment.");
2039 return -EOPNOTSUPP;
2040 }
2041
2042 return 0;
2043}
2044
74da609f
LP		 2045static int initialize_security(
2046 bool *loaded_policy,
2047 dual_timestamp *security_start_timestamp,
2048 dual_timestamp *security_finish_timestamp,
2049 const char **ret_error_message) {
2050
2051 int r;
2052
2053 assert(loaded_policy);
2054 assert(security_start_timestamp);
2055 assert(security_finish_timestamp);
2056 assert(ret_error_message);
2057
2058 dual_timestamp_get(security_start_timestamp);
2059
97149f40 2060 r = mac_selinux_setup(loaded_policy);
74da609f
LP		 2061 if (r < 0) {
2062 *ret_error_message = "Failed to load SELinux policy";
2063 return r;
2064 }
2065
2066 r = mac_smack_setup(loaded_policy);
2067 if (r < 0) {
2068 *ret_error_message = "Failed to load SMACK policy";
2069 return r;
2070 }
2071
2072 r = ima_setup();
2073 if (r < 0) {
2074 *ret_error_message = "Failed to load IMA policy";
2075 return r;
2076 }
2077
2078 dual_timestamp_get(security_finish_timestamp);
2079 return 0;
2080}
2081
263162da
LP		 2082static void test_summary(Manager *m) {
2083 assert(m);
2084
2085 printf("-> By units:\n");
2086 manager_dump_units(m, stdout, "\t");
2087
2088 printf("-> By jobs:\n");
2089 manager_dump_jobs(m, stdout, "\t");
2090}
2091
efeb853f
LP		 2092static int collect_fds(FDSet **ret_fds, const char **ret_error_message) {
2093 int r;
2094
2095 assert(ret_fds);
2096 assert(ret_error_message);
2097
2098 r = fdset_new_fill(ret_fds);
2099 if (r < 0) {
2100 *ret_error_message = "Failed to allocate fd set";
2101 return log_emergency_errno(r, "Failed to allocate fd set: %m");
2102 }
2103
2104 fdset_cloexec(*ret_fds, true);
2105
2106 if (arg_serialization)
2107 assert_se(fdset_remove(*ret_fds, fileno(arg_serialization)) >= 0);
2108
2109 return 0;
2110}
2111
2e51b31c
LP		 2112static void setup_console_terminal(bool skip_setup) {
2113
2114 if (!arg_system)
2115 return;
2116
2117 /* Become a session leader if we aren't one yet. */
2118 (void) setsid();
2119
2120 /* If we are init, we connect stdin/stdout/stderr to /dev/null and make sure we don't have a controlling
2121 * tty. */
2122 (void) release_terminal();
2123
2124 /* Reset the console, but only if this is really init and we are freshly booted */
2125 if (getpid_cached() == 1 && !skip_setup)
2126 (void) console_setup();
2127}
2128
aa40ff07
LP		 2129static bool early_skip_setup_check(int argc, char *argv[]) {
2130 bool found_deserialize = false;
2131 int i;
2132
2133 /* Determine if this is a reexecution or normal bootup. We do the full command line parsing much later, so
2134 * let's just have a quick peek here. Note that if we have switched root, do all the special setup things
2135 * anyway, even if in that case we also do deserialization. */
2136
2137 for (i = 1; i < argc; i++) {
aa40ff07
LP		 2138 if (streq(argv[i], "--switched-root"))
2139 return false; /* If we switched root, don't skip the setup. */
2140 else if (streq(argv[i], "--deserialize"))
2141 found_deserialize = true;
2142 }
2143
2144 return found_deserialize; /* When we are deserializing, then we are reexecuting, hence avoid the extensive setup */
2145}
2146
60918275 2147int main(int argc, char *argv[]) {
625e8690
LP		 2148
2149 dual_timestamp initrd_timestamp = DUAL_TIMESTAMP_NULL, userspace_timestamp = DUAL_TIMESTAMP_NULL, kernel_timestamp = DUAL_TIMESTAMP_NULL,
2150 security_start_timestamp = DUAL_TIMESTAMP_NULL, security_finish_timestamp = DUAL_TIMESTAMP_NULL;
2151 struct rlimit saved_rlimit_nofile = RLIMIT_MAKE_CONST(0), saved_rlimit_memlock = RLIMIT_MAKE_CONST((rlim_t) -1);
2152 bool skip_setup, loaded_policy = false, queue_default_job = false, first_boot = false, reexecute = false;
2153 char *switch_root_dir = NULL, *switch_root_init = NULL;
9d76d730 2154 usec_t before_startup, after_startup;
625e8690 2155 static char systemd[] = "systemd";
9d76d730 2156 char timespan[FORMAT_TIMESPAN_MAX];
625e8690
LP		 2157 const char *shutdown_verb = NULL, *error_message = NULL;
2158 int r, retval = EXIT_FAILURE;
2159 Manager *m = NULL;
a16e1123 2160 FDSet *fds = NULL;
27b14a22 2161
d72a8f10 2162 /* SysV compatibility: redirect init → telinit */
6808a0bc 2163 redirect_telinit(argc, argv);
2cb1a60d 2164
d72a8f10 2165 /* Take timestamps early on */
c3a170f3
HH		 2166 dual_timestamp_from_monotonic(&kernel_timestamp, 0);
2167 dual_timestamp_get(&userspace_timestamp);
2168
d72a8f10
LP		 2169 /* Figure out whether we need to do initialize the system, or if we already did that because we are
2170 * reexecuting */
aa40ff07 2171 skip_setup = early_skip_setup_check(argc, argv);
d03bc1b8 2172
d72a8f10
LP		 2173 /* If we get started via the /sbin/init symlink then we are called 'init'. After a subsequent reexecution we
2174 * are then called 'systemd'. That is confusing, hence let's call us systemd right-away. */
f3b6a3ed 2175 program_invocation_short_name = systemd;
eee8b7ab 2176 (void) prctl(PR_SET_NAME, systemd);
5d6b1584 2177
d72a8f10 2178 /* Save the original command line */
9a0e6896
LP		 2179 saved_argv = argv;
2180 saved_argc = argc;
f3b6a3ed 2181
6fdb8de4 2182 /* Make sure that if the user says "syslog" we actually log to the journal. */
c1dc6153 2183 log_set_upgrade_syslog_to_journal(true);
bbe63281 2184
df0ff127 2185 if (getpid_cached() == 1) {
b5752d23
LP		 2186 /* When we run as PID 1 force system mode */
2187 arg_system = true;
2188
48a601fe 2189 /* Disable the umask logic */
90dc8c2e
MG		 2190 umask(0);
2191
92890452
LP		 2192 /* Make sure that at least initially we do not ever log to journald/syslogd, because it might not be
2193 * activated yet (even though the log socket for it exists). */
d075092f
LP		 2194 log_set_prohibit_ipc(true);
2195
48a601fe
LP		 2196 /* Always reopen /dev/console when running as PID 1 or one of its pre-execve() children. This is
2197 * important so that we never end up logging to any foreign stderr, for example if we have to log in a
2198 * child process right before execve()'ing the actual binary, at a point in time where socket
2199 * activation stderr/stdout area already set up. */
2200 log_set_always_reopen_console(true);
48a601fe 2201
92890452 2202 if (detect_container() <= 0) {
4f8d551f 2203
92890452 2204 /* Running outside of a container as PID 1 */
92890452
LP		 2205 log_set_target(LOG_TARGET_KMSG);
2206 log_open();
a866073d 2207
92890452
LP		 2208 if (in_initrd())
2209 initrd_timestamp = userspace_timestamp;
c3ba6250 2210
92890452
LP		 2211 if (!skip_setup) {
2212 r = mount_setup_early();
2213 if (r < 0) {
2214 error_message = "Failed to mount early API filesystems";
2215 goto finish;
2216 }
2217
2218 r = initialize_security(
2219 &loaded_policy,
2220 &security_start_timestamp,
2221 &security_finish_timestamp,
2222 &error_message);
2223 if (r < 0)
2224 goto finish;
d723cd65 2225 }
eee8b7ab 2226
92890452
LP		 2227 if (mac_selinux_init() < 0) {
2228 error_message = "Failed to initialize SELinux policy";
96694e99 2229 goto finish;
92890452 2230 }
0b3325e7 2231
92890452
LP		 2232 if (!skip_setup)
2233 initialize_clock();
2234
2235 /* Set the default for later on, but don't actually open the logs like this for now. Note that
2236 * if we are transitioning from the initrd there might still be journal fd open, and we
2237 * shouldn't attempt opening that before we parsed /proc/cmdline which might redirect output
2238 * elsewhere. */
2239 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
2240
2241 } else {
2242 /* Running inside a container, as PID 1 */
92890452
LP		 2243 log_set_target(LOG_TARGET_CONSOLE);
2244 log_open();
2245
2246 /* For later on, see above... */
2247 log_set_target(LOG_TARGET_JOURNAL);
2248
2249 /* clear the kernel timestamp,
2250 * because we are in a container */
2251 kernel_timestamp = DUAL_TIMESTAMP_NULL;
cb6531be 2252 }
7948c4df 2253
92890452 2254 initialize_coredump(skip_setup);
a866073d 2255
92890452
LP		 2256 r = fixup_environment();
2257 if (r < 0) {
2258 log_emergency_errno(r, "Failed to fix up PID 1 environment: %m");
2259 error_message = "Failed to fix up PID1 environment";
2260 goto finish;
2261 }
a866073d 2262
c3a170f3 2263 } else {
a866073d 2264 /* Running as user instance */
463d0d15 2265 arg_system = false;
eeecf6e6 2266 log_set_target(LOG_TARGET_AUTO);
871e5809 2267 log_open();
c3a170f3
HH		 2268
2269 /* clear the kernel timestamp,
2270 * because we are not PID 1 */
6513d561 2271 kernel_timestamp = DUAL_TIMESTAMP_NULL;
bbe63281 2272 }
a5dab5ce 2273
6edefe0b 2274 if (arg_system) {
92890452
LP		 2275 /* Try to figure out if we can use colors with the console. No need to do that for user instances since
2276 * they never log into the console. */
3a18b604 2277 log_show_color(colors_enabled());
92890452 2278
c76cf844
AK		 2279 r = make_null_stdio();
2280 if (r < 0)
92890452 2281 log_warning_errno(r, "Failed to redirect standard streams to /dev/null, ignoring: %m");
3a18b604
FB		 2282 }
2283
f170852a
LP		 2284 /* Mount /proc, /sys and friends, so that /proc/cmdline and
2285 * /proc/$PID/fd is available. */
df0ff127 2286 if (getpid_cached() == 1) {
f84f9974 2287
a132bef0 2288 /* Load the kernel modules early. */
2e75e2a8
DM		 2289 if (!skip_setup)
2290 kmod_setup();
2e75e2a8 2291
0c85a4f3 2292 r = mount_setup(loaded_policy);
cb6531be
ZJS		 2293 if (r < 0) {
2294 error_message = "Failed to mount API filesystems";
8efe3c01 2295 goto finish;
cb6531be 2296 }
0c85a4f3 2297 }
4ade7963
LP		 2298
2299 /* Reset all signal handlers. */
ce30c8dc
LP		 2300 (void) reset_all_signal_handlers();
2301 (void) ignore_signals(SIGNALS_IGNORE, -1);
078e4539 2302
97d1fb94
LP		 2303 r = load_configuration(argc, argv, &error_message);
2304 if (r < 0)
f170852a 2305 goto finish;
10c961b9 2306
b0d7c989
LP		 2307 r = safety_checks();
2308 if (r < 0)
fe783b03 2309 goto finish;
fe783b03 2310
bbc1acab 2311 if (IN_SET(arg_action, ACTION_TEST, ACTION_HELP, ACTION_DUMP_CONFIGURATION_ITEMS, ACTION_DUMP_BUS_PROPERTIES))
ee5324aa 2312 (void) pager_open(arg_no_pager, false);
b0d7c989
LP		 2313
2314 if (arg_action != ACTION_RUN)
74e7579c 2315 skip_setup = true;
b87c2aa6 2316
fa0f4d8a 2317 if (arg_action == ACTION_HELP) {
f170852a
LP		 2318 retval = help();
2319 goto finish;
9ba0bc4e
ZJS		 2320 } else if (arg_action == ACTION_VERSION) {
2321 retval = version();
2322 goto finish;
fa0f4d8a 2323 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
e537352b 2324 unit_dump_config_items(stdout);
22f4096c 2325 retval = EXIT_SUCCESS;
e537352b 2326 goto finish;
bbc1acab
YW		 2327 } else if (arg_action == ACTION_DUMP_BUS_PROPERTIES) {
2328 dump_bus_properties(stdout);
2329 retval = EXIT_SUCCESS;
2330 goto finish;
f170852a
LP		 2331 }
2332
4c701096 2333 assert_se(IN_SET(arg_action, ACTION_RUN, ACTION_TEST));
f170852a 2334
5a2e0c62
LP		 2335 /* Move out of the way, so that we won't block unmounts */
2336 assert_se(chdir("/") == 0);
2337
dea374e8 2338 if (arg_action == ACTION_RUN) {
a70c72a0 2339
efeb853f 2340 /* Close logging fds, in order not to confuse collecting passed fds and terminal logic below */
a70c72a0
LP		 2341 log_close();
2342
2343 /* Remember open file descriptors for later deserialization */
efeb853f
LP		 2344 r = collect_fds(&fds, &error_message);
2345 if (r < 0)
dea374e8 2346 goto finish;
a16e1123 2347
2e51b31c
LP		 2348 /* Give up any control of the console, but make sure its initialized. */
2349 setup_console_terminal(skip_setup);
56d96fc0 2350
a70c72a0
LP		 2351 /* Open the logging devices, if possible and necessary */
2352 log_open();
56d96fc0 2353 }
4ade7963 2354
31aef7ff 2355 log_execution_mode(&first_boot);
a5dab5ce 2356
2d776038
LP		 2357 r = initialize_runtime(skip_setup,
2358 &saved_rlimit_nofile,
2359 &saved_rlimit_memlock,
2360 &error_message);
2361 if (r < 0)
2362 goto finish;
4096d6f5 2363
e0a3da1f
ZJS		 2364 r = manager_new(arg_system ? UNIT_FILE_SYSTEM : UNIT_FILE_USER,
2365 arg_action == ACTION_TEST ? MANAGER_TEST_FULL : 0,
2366 &m);
e96d6be7 2367 if (r < 0) {
da927ba9 2368 log_emergency_errno(r, "Failed to allocate manager object: %m");
cb6531be 2369 error_message = "Failed to allocate manager object";
60918275
LP		 2370 goto finish;
2371 }
2372
9f9f0342
LP		 2373 m->timestamps[MANAGER_TIMESTAMP_KERNEL] = kernel_timestamp;
2374 m->timestamps[MANAGER_TIMESTAMP_INITRD] = initrd_timestamp;
2375 m->timestamps[MANAGER_TIMESTAMP_USERSPACE] = userspace_timestamp;
2376 m->timestamps[MANAGER_TIMESTAMP_SECURITY_START] = security_start_timestamp;
2377 m->timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH] = security_finish_timestamp;
9e58ff9c 2378
85cb4151 2379 set_manager_defaults(m);
7b46fc6a 2380 set_manager_settings(m);
fd130612 2381 manager_set_first_boot(m, first_boot);
27d340c7 2382
bf4df7c3 2383 /* Remember whether we should queue the default job */
d3b1c508 2384 queue_default_job = !arg_serialization || arg_switched_root;
bf4df7c3 2385
9d76d730
LP		 2386 before_startup = now(CLOCK_MONOTONIC);
2387
d3b1c508 2388 r = manager_startup(m, arg_serialization, fds);
58f88d92 2389 if (r < 0) {
da927ba9 2390 log_error_errno(r, "Failed to fully start up daemon: %m");
cefb3eda 2391 error_message = "Failed to start up manager";
58f88d92
ZJS		 2392 goto finish;
2393 }
a16e1123 2394
6acca5fc 2395 /* This will close all file descriptors that were opened, but not claimed by any unit. */
2feceb5e 2396 fds = fdset_free(fds);
74ca738f 2397 arg_serialization = safe_fclose(arg_serialization);
bf4df7c3
LP		 2398
2399 if (queue_default_job) {
6acca5fc 2400 r = do_queue_default_job(m, &error_message);
718db961 2401 if (r < 0)
37d88da7 2402 goto finish;
6acca5fc 2403 }
ab17a050 2404
6acca5fc 2405 after_startup = now(CLOCK_MONOTONIC);
60918275 2406
6acca5fc
LP		 2407 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
2408 "Loaded units and determined initial transaction in %s.",
2409 format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 100 * USEC_PER_MSEC));
07672f49 2410
6acca5fc 2411 if (arg_action == ACTION_TEST) {
263162da 2412 test_summary(m);
6acca5fc
LP		 2413 retval = EXIT_SUCCESS;
2414 goto finish;
e965d56d 2415 }
d46de8a1 2416
3046b6db
LP		 2417 (void) invoke_main_loop(m,
2418 &reexecute,
2419 &retval,
2420 &shutdown_verb,
2421 &fds,
2422 &switch_root_dir,
2423 &switch_root_init,
2424 &error_message);
f170852a 2425
60918275 2426finish:
b87c2aa6
ZJS		 2427 pager_close();
2428
92890452 2429 if (m) {
81f5fc2d 2430 arg_shutdown_watchdog = m->shutdown_watchdog;
92890452
LP		 2431 m = manager_free(m);
2432 }
60918275 2433
970777b5 2434 free_arguments();
cc56fafe 2435 mac_selinux_finish();
b2bb3dbe 2436
3c7878f9
LP		 2437 if (reexecute)
2438 do_reexecute(argc, argv,
2439 &saved_rlimit_nofile,
2440 &saved_rlimit_memlock,
2441 fds,
2442 switch_root_dir,
2443 switch_root_init,
2444 &error_message); /* This only returns if reexecution failed */
a16e1123 2445
74ca738f 2446 arg_serialization = safe_fclose(arg_serialization);
2feceb5e 2447 fds = fdset_free(fds);
a16e1123 2448
349cc4a5 2449#if HAVE_VALGRIND_VALGRIND_H
54b434b1
LP		 2450 /* If we are PID 1 and running under valgrind, then let's exit
2451 * here explicitly. valgrind will only generate nice output on
2452 * exit(), not on exec(), hence let's do the former not the
2453 * latter here. */
8a2c1fbf
EJ		 2454 if (getpid_cached() == 1 && RUNNING_ON_VALGRIND) {
2455 /* Cleanup watchdog_device strings for valgrind. We need them
2456 * in become_shutdown() so normally we cannot free them yet. */
2457 watchdog_free_device();
2458 arg_watchdog_device = mfree(arg_watchdog_device);
27fe58b7 2459 return retval;
8a2c1fbf 2460 }
54b434b1
LP		 2461#endif
2462
b9080b03 2463 if (shutdown_verb) {
7eb35049 2464 r = become_shutdown(shutdown_verb, retval);
4a36297c 2465 log_error_errno(r, "Failed to execute shutdown binary, %s: %m", getpid_cached() == 1 ? "freezing" : "quitting");
9b9881d7 2466 error_message = "Failed to execute shutdown binary";
b9080b03
FF		 2467 }
2468
8a2c1fbf
EJ		 2469 watchdog_free_device();
2470 arg_watchdog_device = mfree(arg_watchdog_device);
2471
df0ff127 2472 if (getpid_cached() == 1) {
cb6531be
ZJS		 2473 if (error_message)
2474 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1fc464f6 2475 ANSI_HIGHLIGHT_RED "!!!!!!" ANSI_NORMAL,
cb6531be 2476 "%s, freezing.", error_message);
b9e74c39 2477 freeze_or_reboot();
cb6531be 2478 }
c3b3c274 2479
60918275
LP		 2480 return retval;
2481}
Unnamed repository; edit this file 'description' to name the repository.