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Merge pull request #2907 from evverx/runtime-watchdog-infinity
[thirdparty/systemd.git] / src / core / main.c
CommitLineData
a7334b09
LP		 1/***
2 This file is part of systemd.
3
4 Copyright 2010 Lennart Poettering
5
6 systemd is free software; you can redistribute it and/or modify it
5430f7f2
LP		 7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
a7334b09
LP		 9 (at your option) any later version.
10
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5430f7f2 14 Lesser General Public License for more details.
a7334b09 15
5430f7f2 16 You should have received a copy of the GNU Lesser General Public License
a7334b09
LP		 17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
18***/
19
60918275 20#include <errno.h>
3dfc9763 21#include <fcntl.h>
f170852a 22#include <getopt.h>
97c4f35c 23#include <signal.h>
3dfc9763
LP		 24#include <stdio.h>
25#include <string.h>
664f88a7 26#include <sys/mount.h>
3dfc9763 27#include <sys/prctl.h>
b9e74c39 28#include <sys/reboot.h>
3dfc9763
LP		 29#include <sys/stat.h>
30#include <unistd.h>
b64a3d86
LP		 31#ifdef HAVE_SECCOMP
32#include <seccomp.h>
33#endif
3dfc9763
LP		 34#ifdef HAVE_VALGRIND_VALGRIND_H
35#include <valgrind/valgrind.h>
36#endif
54b434b1 37
718db961 38#include "sd-bus.h"
cf0fbc49 39#include "sd-daemon.h"
3dfc9763 40
b5efdb8a 41#include "alloc-util.h"
d9d93745 42#include "architecture.h"
3dfc9763
LP		 43#include "build.h"
44#include "bus-error.h"
45#include "bus-util.h"
430f0182 46#include "capability-util.h"
24efb112 47#include "clock-util.h"
3dfc9763 48#include "conf-parser.h"
618234a5 49#include "cpu-set-util.h"
3dfc9763
LP		 50#include "dbus-manager.h"
51#include "def.h"
52#include "env-util.h"
3ffd4af2 53#include "fd-util.h"
3dfc9763 54#include "fdset.h"
718db961 55#include "fileio.h"
24882e06 56#include "formats-util.h"
f4f15635 57#include "fs-util.h"
3dfc9763
LP		 58#include "hostname-setup.h"
59#include "ima-setup.h"
60#include "killall.h"
61#include "kmod-setup.h"
d7b8eec7 62#include "load-fragment.h"
3dfc9763 63#include "log.h"
b6e66135 64#include "loopback-setup.h"
b6e66135 65#include "machine-id-setup.h"
3dfc9763
LP		 66#include "manager.h"
67#include "missing.h"
68#include "mount-setup.h"
69#include "pager.h"
6bedfcbb 70#include "parse-util.h"
4e731273 71#include "proc-cmdline.h"
3dfc9763 72#include "process-util.h"
78f22b97 73#include "rlimit-util.h"
b6e66135 74#include "selinux-setup.h"
3dfc9763
LP		 75#include "selinux-util.h"
76#include "signal-util.h"
ffbd2c4d 77#include "smack-setup.h"
3dfc9763 78#include "special.h"
8fcde012 79#include "stat-util.h"
15a5e950 80#include "stdio-util.h"
3dfc9763
LP		 81#include "strv.h"
82#include "switch-root.h"
83#include "terminal-util.h"
b1d4f8e1 84#include "user-util.h"
3dfc9763
LP		 85#include "virt.h"
86#include "watchdog.h"
b6e66135 87
f170852a
LP		 88static enum {
89 ACTION_RUN,
e965d56d 90 ACTION_HELP,
9ba0bc4e 91 ACTION_VERSION,
e537352b 92 ACTION_TEST,
4288f619
LP		 93 ACTION_DUMP_CONFIGURATION_ITEMS,
94 ACTION_DONE
fa0f4d8a 95} arg_action = ACTION_RUN;
fa0f4d8a 96static char *arg_default_unit = NULL;
b2c23da8 97static ManagerRunningAs arg_running_as = _MANAGER_RUNNING_AS_INVALID;
fa0f4d8a 98static bool arg_dump_core = true;
fa0f4d8a 99static int arg_crash_chvt = -1;
b9e74c39
LP		 100static bool arg_crash_shell = false;
101static bool arg_crash_reboot = false;
fa0f4d8a 102static bool arg_confirm_spawn = false;
b6e2f329 103static ShowStatus arg_show_status = _SHOW_STATUS_UNSET;
bf4df7c3 104static bool arg_switched_root = false;
ea4b98e6 105static bool arg_no_pager = false;
0c85a4f3 106static char ***arg_join_controllers = NULL;
706343f4 107static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
0a494f1f 108static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
1f19a534
OS		 109static usec_t arg_default_restart_usec = DEFAULT_RESTART_USEC;
110static usec_t arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC;
111static usec_t arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
3f41e1e5
LN		 112static usec_t arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL;
113static unsigned arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST;
e96d6be7
LP		 114static usec_t arg_runtime_watchdog = 0;
115static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
97d0e5f8 116static char **arg_default_environment = NULL;
517d56b1 117static struct rlimit *arg_default_rlimit[_RLIMIT_MAX] = {};
a103496c 118static uint64_t arg_capability_bounding_set = CAP_ALL;
3a43da28 119static nsec_t arg_timer_slack_nsec = NSEC_INFINITY;
bd8f585b 120static usec_t arg_default_timer_accuracy_usec = 1 * USEC_PER_MINUTE;
d3b1c508
LP		 121static Set* arg_syscall_archs = NULL;
122static FILE* arg_serialization = NULL;
085afe36
LP		 123static bool arg_default_cpu_accounting = false;
124static bool arg_default_blockio_accounting = false;
125static bool arg_default_memory_accounting = false;
9ded9cd1
LP		 126static bool arg_default_tasks_accounting = true;
127static uint64_t arg_default_tasks_max = UINT64_C(512);
ee48dbd5 128static sd_id128_t arg_machine_id = {};
4fc935ca 129
b9e74c39
LP		 130noreturn static void freeze_or_reboot(void) {
131
132 if (arg_crash_reboot) {
133 log_notice("Rebooting in 10s...");
134 (void) sleep(10);
135
136 log_notice("Rebooting now...");
137 (void) reboot(RB_AUTOBOOT);
138 log_emergency_errno(errno, "Failed to reboot: %m");
139 }
140
141 log_emergency("Freezing execution.");
142 freeze();
143}
144
919ce0b7 145noreturn static void crash(int sig) {
7d06dad9
MS		 146 struct sigaction sa;
147 pid_t pid;
97c4f35c 148
abb26902
LP		 149 if (getpid() != 1)
150 /* Pass this on immediately, if this is not PID 1 */
92ca4cac 151 (void) raise(sig);
abb26902 152 else if (!arg_dump_core)
4104970e 153 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig));
97c4f35c 154 else {
7d06dad9 155 sa = (struct sigaction) {
189d5bac 156 .sa_handler = nop_signal_handler,
b92bea5d
ZJS		 157 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
158 };
97c4f35c 159
6f5e3f35 160 /* We want to wait for the core process, hence let's enable SIGCHLD */
92ca4cac 161 (void) sigaction(SIGCHLD, &sa, NULL);
6f5e3f35 162
ee05e779 163 pid = raw_clone(SIGCHLD, NULL);
e62d8c39 164 if (pid < 0)
56f64d95 165 log_emergency_errno(errno, "Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig));
97c4f35c 166 else if (pid == 0) {
97c4f35c 167 /* Enable default signal handler for core dump */
15a90032 168
92ca4cac
LP		 169 sa = (struct sigaction) {
170 .sa_handler = SIG_DFL,
171 };
172 (void) sigaction(sig, &sa, NULL);
97c4f35c 173
15a90032
LP		 174 /* Don't limit the coredump size */
175 (void) setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY));
97c4f35c
LP		 176
177 /* Just to be sure... */
e62d9b81 178 (void) chdir("/");
97c4f35c
LP		 179
180 /* Raise the signal again */
ee05e779 181 pid = raw_getpid();
92ca4cac 182 (void) kill(pid, sig); /* raise() would kill the parent */
97c4f35c
LP		 183
184 assert_not_reached("We shouldn't be here...");
92ca4cac 185 _exit(EXIT_FAILURE);
4fc935ca 186 } else {
8e12a6ae
LP		 187 siginfo_t status;
188 int r;
4fc935ca
LP		 189
190 /* Order things nicely. */
e62d8c39
ZJS		 191 r = wait_for_terminate(pid, &status);
192 if (r < 0)
da927ba9 193 log_emergency_errno(r, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig));
8e12a6ae 194 else if (status.si_code != CLD_DUMPED)
ee05e779
ZJS		 195 log_emergency("Caught <%s>, core dump failed (child "PID_FMT", code=%s, status=%i/%s).",
196 signal_to_string(sig),
197 pid, sigchld_code_to_string(status.si_code),
198 status.si_status,
199 strna(status.si_code == CLD_EXITED
200 ? exit_status_to_string(status.si_status, EXIT_STATUS_FULL)
201 : signal_to_string(status.si_status)));
4fc935ca 202 else
4104970e 203 log_emergency("Caught <%s>, dumped core as pid "PID_FMT".", signal_to_string(sig), pid);
97c4f35c
LP		 204 }
205 }
206
b9e74c39 207 if (arg_crash_chvt >= 0)
92ca4cac 208 (void) chvt(arg_crash_chvt);
601f6a1e 209
7d06dad9
MS		 210 sa = (struct sigaction) {
211 .sa_handler = SIG_IGN,
212 .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
213 };
214
215 /* Let the kernel reap children for us */
216 (void) sigaction(SIGCHLD, &sa, NULL);
8c43883a 217
7d06dad9 218 if (arg_crash_shell) {
b9e74c39 219 log_notice("Executing crash shell in 10s...");
92ca4cac 220 (void) sleep(10);
4fc935ca 221
ee05e779 222 pid = raw_clone(SIGCHLD, NULL);
cd3bd60a 223 if (pid < 0)
56f64d95 224 log_emergency_errno(errno, "Failed to fork off crash shell: %m");
6f5e3f35 225 else if (pid == 0) {
b9e74c39 226 (void) setsid();
92ca4cac
LP		 227 (void) make_console_stdio();
228 (void) execle("/bin/sh", "/bin/sh", NULL, environ);
6f5e3f35 229
ee05e779 230 log_emergency_errno(errno, "execle() failed: %m");
92ca4cac 231 _exit(EXIT_FAILURE);
b9e74c39
LP		 232 } else {
233 log_info("Spawned crash shell as PID "PID_FMT".", pid);
4cf0b03b 234 (void) wait_for_terminate(pid, NULL);
b9e74c39 235 }
4fc935ca
LP		 236 }
237
b9e74c39 238 freeze_or_reboot();
97c4f35c
LP		 239}
240
241static void install_crash_handler(void) {
297d563d 242 static const struct sigaction sa = {
b92bea5d 243 .sa_handler = crash,
297d563d 244 .sa_flags = SA_NODEFER, /* So that we can raise the signal again from the signal handler */
b92bea5d 245 };
297d563d 246 int r;
97c4f35c 247
297d563d
LP		 248 /* We ignore the return value here, since, we don't mind if we
249 * cannot set up a crash handler */
250 r = sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
251 if (r < 0)
252 log_debug_errno(r, "I had trouble setting up the crash handler, ignoring: %m");
97c4f35c 253}
f170852a 254
56d96fc0
LP		 255static int console_setup(void) {
256 _cleanup_close_ int tty_fd = -1;
257 int r;
80876c20 258
512947d4 259 tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
23bbb0de
MS		 260 if (tty_fd < 0)
261 return log_error_errno(tty_fd, "Failed to open /dev/console: %m");
80876c20 262
56d96fc0
LP		 263 /* We don't want to force text mode. plymouth may be showing
264 * pictures already from initrd. */
512947d4 265 r = reset_terminal_fd(tty_fd, false);
23bbb0de
MS		 266 if (r < 0)
267 return log_error_errno(r, "Failed to reset /dev/console: %m");
843d2643 268
56d96fc0 269 return 0;
80876c20
LP		 270}
271
b9e74c39
LP		 272static int parse_crash_chvt(const char *value) {
273 int b;
274
275 if (safe_atoi(value, &arg_crash_chvt) >= 0)
276 return 0;
277
278 b = parse_boolean(value);
279 if (b < 0)
280 return b;
281
282 if (b > 0)
283 arg_crash_chvt = 0; /* switch to where kmsg goes */
284 else
285 arg_crash_chvt = -1; /* turn off switching */
286
287 return 0;
288}
289
ee48dbd5
NC		 290static int set_machine_id(const char *m) {
291
292 if (sd_id128_from_string(m, &arg_machine_id) < 0)
293 return -EINVAL;
294
295 if (sd_id128_is_null(arg_machine_id))
296 return -EINVAL;
297
298 return 0;
299}
300
059cb385 301static int parse_proc_cmdline_item(const char *key, const char *value) {
f170852a 302
059cb385 303 int r;
f170852a 304
059cb385 305 assert(key);
5192bd19 306
059cb385 307 if (streq(key, "systemd.unit") && value) {
bf4df7c3
LP		 308
309 if (!in_initrd())
e6e242ad 310 return free_and_strdup(&arg_default_unit, value);
bf4df7c3 311
059cb385 312 } else if (streq(key, "rd.systemd.unit") && value) {
bf4df7c3 313
ca05941b 314 if (in_initrd())
e6e242ad 315 return free_and_strdup(&arg_default_unit, value);
f170852a 316
059cb385 317 } else if (streq(key, "systemd.dump_core") && value) {
4fc935ca 318
059cb385 319 r = parse_boolean(value);
fb472900 320 if (r < 0)
059cb385 321 log_warning("Failed to parse dump core switch %s. Ignoring.", value);
4fc935ca 322 else
fa0f4d8a 323 arg_dump_core = r;
4fc935ca 324
b9e74c39
LP		 325 } else if (streq(key, "systemd.crash_chvt") && value) {
326
327 if (parse_crash_chvt(value) < 0)
328 log_warning("Failed to parse crash chvt switch %s. Ignoring.", value);
329
059cb385 330 } else if (streq(key, "systemd.crash_shell") && value) {
4fc935ca 331
059cb385 332 r = parse_boolean(value);
fb472900 333 if (r < 0)
059cb385 334 log_warning("Failed to parse crash shell switch %s. Ignoring.", value);
4fc935ca 335 else
fa0f4d8a 336 arg_crash_shell = r;
5e7ee61c 337
b9e74c39 338 } else if (streq(key, "systemd.crash_reboot") && value) {
5e7ee61c 339
b9e74c39
LP		 340 r = parse_boolean(value);
341 if (r < 0)
342 log_warning("Failed to parse crash reboot switch %s. Ignoring.", value);
5e7ee61c 343 else
b9e74c39 344 arg_crash_reboot = r;
5e7ee61c 345
059cb385 346 } else if (streq(key, "systemd.confirm_spawn") && value) {
601f6a1e 347
059cb385
LP		 348 r = parse_boolean(value);
349 if (r < 0)
350 log_warning("Failed to parse confirm spawn switch %s. Ignoring.", value);
601f6a1e 351 else
059cb385 352 arg_confirm_spawn = r;
601f6a1e 353
059cb385 354 } else if (streq(key, "systemd.show_status") && value) {
9e58ff9c 355
059cb385 356 r = parse_show_status(value, &arg_show_status);
d450b6f2 357 if (r < 0)
059cb385
LP		 358 log_warning("Failed to parse show status switch %s. Ignoring.", value);
359
360 } else if (streq(key, "systemd.default_standard_output") && value) {
0a494f1f 361
059cb385 362 r = exec_output_from_string(value);
fb472900 363 if (r < 0)
059cb385 364 log_warning("Failed to parse default standard output switch %s. Ignoring.", value);
0a494f1f
LP		 365 else
366 arg_default_std_output = r;
0a494f1f 367
059cb385
LP		 368 } else if (streq(key, "systemd.default_standard_error") && value) {
369
370 r = exec_output_from_string(value);
fb472900 371 if (r < 0)
059cb385 372 log_warning("Failed to parse default standard error switch %s. Ignoring.", value);
0a494f1f
LP		 373 else
374 arg_default_std_error = r;
9e7c5357 375
059cb385
LP		 376 } else if (streq(key, "systemd.setenv") && value) {
377
378 if (env_assignment_is_valid(value)) {
e21fea24
KS		 379 char **env;
380
059cb385 381 env = strv_env_set(arg_default_environment, value);
e21fea24
KS		 382 if (env)
383 arg_default_environment = env;
384 else
279d3c9c 385 log_warning_errno(ENOMEM, "Setting environment variable '%s' failed, ignoring: %m", value);
e21fea24 386 } else
059cb385 387 log_warning("Environment variable name '%s' is not valid. Ignoring.", value);
9e58ff9c 388
ee48dbd5
NC		 389 } else if (streq(key, "systemd.machine_id") && value) {
390
391 r = set_machine_id(value);
392 if (r < 0)
393 log_warning("MachineID '%s' is not valid. Ignoring.", value);
394
059cb385 395 } else if (streq(key, "quiet") && !value) {
d7b15e0a 396
b6e2f329 397 if (arg_show_status == _SHOW_STATUS_UNSET)
d450b6f2 398 arg_show_status = SHOW_STATUS_AUTO;
059cb385
LP		 399
400 } else if (streq(key, "debug") && !value) {
d7b15e0a 401
1de1c9c3
LP		 402 /* Note that log_parse_environment() handles 'debug'
403 * too, and sets the log level to LOG_DEBUG. */
d7b15e0a 404
75f86906 405 if (detect_container() > 0)
b2103dcc 406 log_set_target(LOG_TARGET_CONSOLE);
059cb385
LP		 407
408 } else if (!in_initrd() && !value) {
e2c9a131 409 const char *target;
f170852a
LP		 410
411 /* SysV compatibility */
e2c9a131
EV		 412 target = runlevel_to_target(key);
413 if (target)
414 return free_and_strdup(&arg_default_unit, target);
f170852a
LP		 415 }
416
417 return 0;
418}
419
e8e581bf
ZJS		 420#define DEFINE_SETTER(name, func, descr) \
421 static int name(const char *unit, \
422 const char *filename, \
423 unsigned line, \
424 const char *section, \
71a61510 425 unsigned section_line, \
e8e581bf
ZJS		 426 const char *lvalue, \
427 int ltype, \
428 const char *rvalue, \
429 void *data, \
430 void *userdata) { \
431 \
432 int r; \
433 \
434 assert(filename); \
435 assert(lvalue); \
436 assert(rvalue); \
437 \
438 r = func(rvalue); \
439 if (r < 0) \
d1cefe0a
LP		 440 log_syntax(unit, LOG_ERR, filename, line, r, \
441 "Invalid " descr "'%s': %m", \
442 rvalue); \
e8e581bf
ZJS		 443 \
444 return 0; \
445 }
487393e9 446
e8e581bf
ZJS		 447DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level")
448DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target")
449DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" )
450DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location")
487393e9 451
4d7213b2
LP		 452static int config_parse_cpu_affinity2(
453 const char *unit,
454 const char *filename,
455 unsigned line,
456 const char *section,
457 unsigned section_line,
458 const char *lvalue,
459 int ltype,
460 const char *rvalue,
461 void *data,
462 void *userdata) {
487393e9 463
4b40bc38 464 _cleanup_cpu_free_ cpu_set_t *c = NULL;
f5c72b73 465 int ncpus;
487393e9 466
765d143b 467 ncpus = parse_cpu_set_and_warn(rvalue, &c, unit, filename, line, lvalue);
f5c72b73
FB		 468 if (ncpus < 0)
469 return ncpus;
487393e9 470
f5c72b73
FB		 471 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
472 log_warning("Failed to set CPU affinity: %m");
487393e9 473
487393e9
LP		 474 return 0;
475}
476
4d7213b2
LP		 477static int config_parse_show_status(
478 const char* unit,
479 const char *filename,
480 unsigned line,
481 const char *section,
482 unsigned section_line,
483 const char *lvalue,
484 int ltype,
485 const char *rvalue,
486 void *data,
487 void *userdata) {
488
489 int k;
490 ShowStatus *b = data;
491
492 assert(filename);
493 assert(lvalue);
494 assert(rvalue);
495 assert(data);
496
497 k = parse_show_status(rvalue, b);
498 if (k < 0) {
12ca818f 499 log_syntax(unit, LOG_ERR, filename, line, k, "Failed to parse show status setting, ignoring: %s", rvalue);
4d7213b2
LP		 500 return 0;
501 }
502
503 return 0;
504}
505
b9e74c39
LP		 506static int config_parse_crash_chvt(
507 const char* unit,
508 const char *filename,
509 unsigned line,
510 const char *section,
511 unsigned section_line,
512 const char *lvalue,
513 int ltype,
514 const char *rvalue,
515 void *data,
516 void *userdata) {
517
518 int r;
519
520 assert(filename);
521 assert(lvalue);
522 assert(rvalue);
b9e74c39
LP		 523
524 r = parse_crash_chvt(rvalue);
525 if (r < 0) {
526 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse CrashChangeVT= setting, ignoring: %s", rvalue);
527 return 0;
528 }
529
530 return 0;
531}
532
e8e581bf
ZJS		 533static int config_parse_join_controllers(const char *unit,
534 const char *filename,
535 unsigned line,
536 const char *section,
71a61510 537 unsigned section_line,
e8e581bf
ZJS		 538 const char *lvalue,
539 int ltype,
540 const char *rvalue,
541 void *data,
542 void *userdata) {
0c85a4f3 543
3875c85b 544 const char *whole_rvalue = rvalue;
0c85a4f3 545 unsigned n = 0;
0c85a4f3
LP		 546
547 assert(filename);
548 assert(lvalue);
549 assert(rvalue);
550
fe382237 551 arg_join_controllers = strv_free_free(arg_join_controllers);
0c85a4f3 552
d4ebeb4f
FB		 553 for (;;) {
554 _cleanup_free_ char *word = NULL;
555 char **l;
556 int r;
0c85a4f3 557
d4ebeb4f 558 r = extract_first_word(&rvalue, &word, WHITESPACE, EXTRACT_QUOTES);
3875c85b
FB		 559 if (r < 0) {
560 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid value for %s: %s", lvalue, whole_rvalue);
d4ebeb4f 561 return r;
3875c85b 562 }
d4ebeb4f
FB		 563 if (r == 0)
564 break;
0c85a4f3 565
d4ebeb4f 566 l = strv_split(word, ",");
1592ec21 567 if (!l)
aa8aeac0 568 return log_oom();
0c85a4f3
LP		 569 strv_uniq(l);
570
571 if (strv_length(l) <= 1) {
572 strv_free(l);
573 continue;
574 }
575
576 if (!arg_join_controllers) {
577 arg_join_controllers = new(char**, 2);
578 if (!arg_join_controllers) {
579 strv_free(l);
14212119 580 return log_oom();
0c85a4f3
LP		 581 }
582
583 arg_join_controllers[0] = l;
584 arg_join_controllers[1] = NULL;
585
586 n = 1;
587 } else {
588 char ***a;
589 char ***t;
590
591 t = new0(char**, n+2);
592 if (!t) {
593 strv_free(l);
14212119 594 return log_oom();
0c85a4f3
LP		 595 }
596
597 n = 0;
598
599 for (a = arg_join_controllers; *a; a++) {
600
601 if (strv_overlap(*a, l)) {
e287086b 602 if (strv_extend_strv(&l, *a, false) < 0) {
0c85a4f3
LP		 603 strv_free(l);
604 strv_free_free(t);
14212119 605 return log_oom();
0c85a4f3
LP		 606 }
607
0c85a4f3
LP		 608 } else {
609 char **c;
610
611 c = strv_copy(*a);
612 if (!c) {
613 strv_free(l);
614 strv_free_free(t);
14212119 615 return log_oom();
0c85a4f3
LP		 616 }
617
618 t[n++] = c;
619 }
620 }
621
622 t[n++] = strv_uniq(l);
623
624 strv_free_free(arg_join_controllers);
625 arg_join_controllers = t;
626 }
627 }
d4ebeb4f 628 if (!isempty(rvalue))
12ca818f 629 log_syntax(unit, LOG_ERR, filename, line, 0, "Trailing garbage, ignoring.");
0c85a4f3
LP		 630
631 return 0;
632}
633
487393e9
LP		 634static int parse_config_file(void) {
635
f975e971 636 const ConfigTableItem items[] = {
d3b1c508
LP		 637 { "Manager", "LogLevel", config_parse_level2, 0, NULL },
638 { "Manager", "LogTarget", config_parse_target, 0, NULL },
639 { "Manager", "LogColor", config_parse_color, 0, NULL },
640 { "Manager", "LogLocation", config_parse_location, 0, NULL },
641 { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
b9e74c39
LP		 642 { "Manager", "CrashChVT", /* legacy */ config_parse_crash_chvt, 0, NULL },
643 { "Manager", "CrashChangeVT", config_parse_crash_chvt, 0, NULL },
d3b1c508 644 { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
b9e74c39 645 { "Manager", "CrashReboot", config_parse_bool, 0, &arg_crash_reboot },
d3b1c508 646 { "Manager", "ShowStatus", config_parse_show_status, 0, &arg_show_status },
d3b1c508
LP		 647 { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
648 { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
649 { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog },
650 { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog },
a103496c 651 { "Manager", "CapabilityBoundingSet", config_parse_capability_set, 0, &arg_capability_bounding_set },
89fffa27 652#ifdef HAVE_SECCOMP
d3b1c508 653 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs, 0, &arg_syscall_archs },
89fffa27 654#endif
d3b1c508 655 { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
bd8f585b 656 { "Manager", "DefaultTimerAccuracySec", config_parse_sec, 0, &arg_default_timer_accuracy_usec },
d3b1c508
LP		 657 { "Manager", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output },
658 { "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error },
659 { "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_default_timeout_start_usec },
660 { "Manager", "DefaultTimeoutStopSec", config_parse_sec, 0, &arg_default_timeout_stop_usec },
661 { "Manager", "DefaultRestartSec", config_parse_sec, 0, &arg_default_restart_usec },
662 { "Manager", "DefaultStartLimitInterval", config_parse_sec, 0, &arg_default_start_limit_interval },
663 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_default_start_limit_burst },
664 { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
d0a7c5f6
LP		 665 { "Manager", "DefaultLimitCPU", config_parse_limit, RLIMIT_CPU, arg_default_rlimit },
666 { "Manager", "DefaultLimitFSIZE", config_parse_limit, RLIMIT_FSIZE, arg_default_rlimit },
667 { "Manager", "DefaultLimitDATA", config_parse_limit, RLIMIT_DATA, arg_default_rlimit },
668 { "Manager", "DefaultLimitSTACK", config_parse_limit, RLIMIT_STACK, arg_default_rlimit },
669 { "Manager", "DefaultLimitCORE", config_parse_limit, RLIMIT_CORE, arg_default_rlimit },
670 { "Manager", "DefaultLimitRSS", config_parse_limit, RLIMIT_RSS, arg_default_rlimit },
671 { "Manager", "DefaultLimitNOFILE", config_parse_limit, RLIMIT_NOFILE, arg_default_rlimit },
672 { "Manager", "DefaultLimitAS", config_parse_limit, RLIMIT_AS, arg_default_rlimit },
673 { "Manager", "DefaultLimitNPROC", config_parse_limit, RLIMIT_NPROC, arg_default_rlimit },
674 { "Manager", "DefaultLimitMEMLOCK", config_parse_limit, RLIMIT_MEMLOCK, arg_default_rlimit },
675 { "Manager", "DefaultLimitLOCKS", config_parse_limit, RLIMIT_LOCKS, arg_default_rlimit },
676 { "Manager", "DefaultLimitSIGPENDING", config_parse_limit, RLIMIT_SIGPENDING, arg_default_rlimit },
677 { "Manager", "DefaultLimitMSGQUEUE", config_parse_limit, RLIMIT_MSGQUEUE, arg_default_rlimit },
678 { "Manager", "DefaultLimitNICE", config_parse_limit, RLIMIT_NICE, arg_default_rlimit },
679 { "Manager", "DefaultLimitRTPRIO", config_parse_limit, RLIMIT_RTPRIO, arg_default_rlimit },
680 { "Manager", "DefaultLimitRTTIME", config_parse_limit, RLIMIT_RTTIME, arg_default_rlimit },
085afe36
LP		 681 { "Manager", "DefaultCPUAccounting", config_parse_bool, 0, &arg_default_cpu_accounting },
682 { "Manager", "DefaultBlockIOAccounting", config_parse_bool, 0, &arg_default_blockio_accounting },
683 { "Manager", "DefaultMemoryAccounting", config_parse_bool, 0, &arg_default_memory_accounting },
03a7b521 684 { "Manager", "DefaultTasksAccounting", config_parse_bool, 0, &arg_default_tasks_accounting },
0af20ea2 685 { "Manager", "DefaultTasksMax", config_parse_tasks_max, 0, &arg_default_tasks_max },
d3b1c508 686 {}
487393e9
LP		 687 };
688
1b907b5c 689 const char *fn, *conf_dirs_nulstr;
487393e9 690
75eb6154
LP		 691 fn = arg_running_as == MANAGER_SYSTEM ?
692 PKGSYSCONFDIR "/system.conf" :
693 PKGSYSCONFDIR "/user.conf";
694
695 conf_dirs_nulstr = arg_running_as == MANAGER_SYSTEM ?
696 CONF_PATHS_NULSTR("systemd/system.conf.d") :
697 CONF_PATHS_NULSTR("systemd/user.conf.d");
698
36c16a7c
LP		 699 config_parse_many(fn, conf_dirs_nulstr, "Manager\0", config_item_table_lookup, items, false, NULL);
700
701 /* Traditionally "0" was used to turn off the default unit timeouts. Fix this up so that we used USEC_INFINITY
702 * like everywhere else. */
703 if (arg_default_timeout_start_usec <= 0)
704 arg_default_timeout_start_usec = USEC_INFINITY;
705 if (arg_default_timeout_stop_usec <= 0)
706 arg_default_timeout_stop_usec = USEC_INFINITY;
487393e9 707
487393e9
LP		 708 return 0;
709}
710
06af2a04
TB		 711static void manager_set_defaults(Manager *m) {
712
713 assert(m);
714
715 m->default_timer_accuracy_usec = arg_default_timer_accuracy_usec;
716 m->default_std_output = arg_default_std_output;
717 m->default_std_error = arg_default_std_error;
718 m->default_timeout_start_usec = arg_default_timeout_start_usec;
719 m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
720 m->default_restart_usec = arg_default_restart_usec;
721 m->default_start_limit_interval = arg_default_start_limit_interval;
722 m->default_start_limit_burst = arg_default_start_limit_burst;
723 m->default_cpu_accounting = arg_default_cpu_accounting;
724 m->default_blockio_accounting = arg_default_blockio_accounting;
725 m->default_memory_accounting = arg_default_memory_accounting;
03a7b521 726 m->default_tasks_accounting = arg_default_tasks_accounting;
0af20ea2 727 m->default_tasks_max = arg_default_tasks_max;
06af2a04
TB		 728
729 manager_set_default_rlimits(m, arg_default_rlimit);
730 manager_environment_add(m, NULL, arg_default_environment);
731}
732
f170852a
LP		 733static int parse_argv(int argc, char *argv[]) {
734
735 enum {
736 ARG_LOG_LEVEL = 0x100,
737 ARG_LOG_TARGET,
bbe63281
LP		 738 ARG_LOG_COLOR,
739 ARG_LOG_LOCATION,
2f198e2f 740 ARG_UNIT,
edb9aaa8 741 ARG_SYSTEM,
af2d49f7 742 ARG_USER,
e537352b 743 ARG_TEST,
b87c2aa6 744 ARG_NO_PAGER,
9ba0bc4e 745 ARG_VERSION,
80876c20 746 ARG_DUMP_CONFIGURATION_ITEMS,
9e58ff9c 747 ARG_DUMP_CORE,
b9e74c39 748 ARG_CRASH_CHVT,
9e58ff9c 749 ARG_CRASH_SHELL,
b9e74c39 750 ARG_CRASH_REBOOT,
a16e1123 751 ARG_CONFIRM_SPAWN,
9e58ff9c 752 ARG_SHOW_STATUS,
4288f619 753 ARG_DESERIALIZE,
2660882b 754 ARG_SWITCHED_ROOT,
0a494f1f 755 ARG_DEFAULT_STD_OUTPUT,
ee48dbd5
NC		 756 ARG_DEFAULT_STD_ERROR,
757 ARG_MACHINE_ID
f170852a
LP		 758 };
759
760 static const struct option options[] = {
a16e1123
LP		 761 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
762 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
bbe63281
LP		 763 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
764 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
2f198e2f 765 { "unit", required_argument, NULL, ARG_UNIT },
edb9aaa8 766 { "system", no_argument, NULL, ARG_SYSTEM },
af2d49f7 767 { "user", no_argument, NULL, ARG_USER },
a16e1123 768 { "test", no_argument, NULL, ARG_TEST },
b87c2aa6 769 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
a16e1123 770 { "help", no_argument, NULL, 'h' },
9ba0bc4e 771 { "version", no_argument, NULL, ARG_VERSION },
a16e1123 772 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
a5d87bf0 773 { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
b9e74c39 774 { "crash-chvt", required_argument, NULL, ARG_CRASH_CHVT },
a5d87bf0 775 { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
b9e74c39 776 { "crash-reboot", optional_argument, NULL, ARG_CRASH_REBOOT },
a5d87bf0 777 { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
6e98720f 778 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
a16e1123 779 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
2660882b 780 { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
0a494f1f
LP		 781 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
782 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
ee48dbd5 783 { "machine-id", required_argument, NULL, ARG_MACHINE_ID },
fb472900 784 {}
f170852a
LP		 785 };
786
787 int c, r;
788
789 assert(argc >= 1);
790 assert(argv);
791
b770165a
LP		 792 if (getpid() == 1)
793 opterr = 0;
794
099663ff 795 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
f170852a
LP		 796
797 switch (c) {
798
799 case ARG_LOG_LEVEL:
fb472900
ZJS		 800 r = log_set_max_level_from_string(optarg);
801 if (r < 0) {
f170852a
LP		 802 log_error("Failed to parse log level %s.", optarg);
803 return r;
804 }
805
806 break;
807
808 case ARG_LOG_TARGET:
fb472900
ZJS		 809 r = log_set_target_from_string(optarg);
810 if (r < 0) {
f170852a
LP		 811 log_error("Failed to parse log target %s.", optarg);
812 return r;
813 }
814
815 break;
816
bbe63281
LP		 817 case ARG_LOG_COLOR:
818
d0b170c8 819 if (optarg) {
fb472900
ZJS		 820 r = log_show_color_from_string(optarg);
821 if (r < 0) {
d0b170c8
LP		 822 log_error("Failed to parse log color setting %s.", optarg);
823 return r;
824 }
825 } else
826 log_show_color(true);
bbe63281
LP		 827
828 break;
829
830 case ARG_LOG_LOCATION:
d0b170c8 831 if (optarg) {
fb472900
ZJS		 832 r = log_show_location_from_string(optarg);
833 if (r < 0) {
d0b170c8
LP		 834 log_error("Failed to parse log location setting %s.", optarg);
835 return r;
836 }
837 } else
838 log_show_location(true);
bbe63281
LP		 839
840 break;
841
0a494f1f 842 case ARG_DEFAULT_STD_OUTPUT:
fb472900
ZJS		 843 r = exec_output_from_string(optarg);
844 if (r < 0) {
0a494f1f
LP		 845 log_error("Failed to parse default standard output setting %s.", optarg);
846 return r;
847 } else
848 arg_default_std_output = r;
849 break;
850
851 case ARG_DEFAULT_STD_ERROR:
fb472900
ZJS		 852 r = exec_output_from_string(optarg);
853 if (r < 0) {
0a494f1f
LP		 854 log_error("Failed to parse default standard error output setting %s.", optarg);
855 return r;
856 } else
857 arg_default_std_error = r;
858 break;
859
2f198e2f 860 case ARG_UNIT:
f170852a 861
e6e242ad 862 r = free_and_strdup(&arg_default_unit, optarg);
23bbb0de
MS		 863 if (r < 0)
864 return log_error_errno(r, "Failed to set default unit %s: %m", optarg);
f170852a
LP		 865
866 break;
867
edb9aaa8 868 case ARG_SYSTEM:
b2c23da8 869 arg_running_as = MANAGER_SYSTEM;
edb9aaa8 870 break;
a5dab5ce 871
af2d49f7 872 case ARG_USER:
b2c23da8 873 arg_running_as = MANAGER_USER;
a5dab5ce 874 break;
a5dab5ce 875
e965d56d 876 case ARG_TEST:
fa0f4d8a 877 arg_action = ACTION_TEST;
b87c2aa6
ZJS		 878 break;
879
880 case ARG_NO_PAGER:
881 arg_no_pager = true;
e965d56d
LP		 882 break;
883
9ba0bc4e
ZJS		 884 case ARG_VERSION:
885 arg_action = ACTION_VERSION;
886 break;
887
e537352b 888 case ARG_DUMP_CONFIGURATION_ITEMS:
fa0f4d8a 889 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
e537352b
LP		 890 break;
891
9e58ff9c 892 case ARG_DUMP_CORE:
b9e74c39
LP		 893 if (!optarg)
894 arg_dump_core = true;
895 else {
896 r = parse_boolean(optarg);
897 if (r < 0)
898 return log_error_errno(r, "Failed to parse dump core boolean: %s", optarg);
899 arg_dump_core = r;
a5d87bf0 900 }
b9e74c39
LP		 901 break;
902
903 case ARG_CRASH_CHVT:
904 r = parse_crash_chvt(optarg);
905 if (r < 0)
906 return log_error_errno(r, "Failed to parse crash virtual terminal index: %s", optarg);
9e58ff9c
LP		 907 break;
908
909 case ARG_CRASH_SHELL:
b9e74c39
LP		 910 if (!optarg)
911 arg_crash_shell = true;
912 else {
913 r = parse_boolean(optarg);
914 if (r < 0)
915 return log_error_errno(r, "Failed to parse crash shell boolean: %s", optarg);
916 arg_crash_shell = r;
917 }
918 break;
919
920 case ARG_CRASH_REBOOT:
921 if (!optarg)
922 arg_crash_reboot = true;
923 else {
924 r = parse_boolean(optarg);
925 if (r < 0)
926 return log_error_errno(r, "Failed to parse crash shell boolean: %s", optarg);
927 arg_crash_reboot = r;
a5d87bf0 928 }
9e58ff9c
LP		 929 break;
930
80876c20 931 case ARG_CONFIRM_SPAWN:
a5d87bf0
LP		 932 r = optarg ? parse_boolean(optarg) : 1;
933 if (r < 0) {
934 log_error("Failed to parse confirm spawn boolean %s.", optarg);
935 return r;
936 }
937 arg_confirm_spawn = r;
80876c20
LP		 938 break;
939
9e58ff9c 940 case ARG_SHOW_STATUS:
d450b6f2
ZJS		 941 if (optarg) {
942 r = parse_show_status(optarg, &arg_show_status);
943 if (r < 0) {
944 log_error("Failed to parse show status boolean %s.", optarg);
945 return r;
946 }
947 } else
948 arg_show_status = SHOW_STATUS_YES;
6e98720f 949 break;
a5d87bf0 950
a16e1123
LP		 951 case ARG_DESERIALIZE: {
952 int fd;
953 FILE *f;
954
01e10de3
LP		 955 r = safe_atoi(optarg, &fd);
956 if (r < 0 || fd < 0) {
a16e1123 957 log_error("Failed to parse deserialize option %s.", optarg);
b9e74c39 958 return -EINVAL;
a16e1123
LP		 959 }
960
b9e74c39 961 (void) fd_cloexec(fd, true);
01e10de3
LP		 962
963 f = fdopen(fd, "r");
4a62c710
MS		 964 if (!f)
965 return log_error_errno(errno, "Failed to open serialization fd: %m");
a16e1123 966
74ca738f 967 safe_fclose(arg_serialization);
d3b1c508 968 arg_serialization = f;
a16e1123
LP		 969
970 break;
971 }
972
2660882b 973 case ARG_SWITCHED_ROOT:
bf4df7c3 974 arg_switched_root = true;
d03bc1b8
HH		 975 break;
976
ee48dbd5
NC		 977 case ARG_MACHINE_ID:
978 r = set_machine_id(optarg);
979 if (r < 0) {
980 log_error("MachineID '%s' is not valid.", optarg);
981 return r;
982 }
983 break;
984
f170852a 985 case 'h':
fa0f4d8a 986 arg_action = ACTION_HELP;
f170852a
LP		 987 break;
988
1d2e23ab
LP		 989 case 'D':
990 log_set_max_level(LOG_DEBUG);
991 break;
992
099663ff
LP		 993 case 'b':
994 case 's':
995 case 'z':
996 /* Just to eat away the sysvinit kernel
997 * cmdline args without getopt() error
998 * messages that we'll parse in
999 * parse_proc_cmdline_word() or ignore. */
f170852a 1000
099663ff 1001 case '?':
601185b4 1002 if (getpid() != 1)
099663ff 1003 return -EINVAL;
601185b4
ZJS		 1004 else
1005 return 0;
099663ff 1006
601185b4
ZJS		 1007 default:
1008 assert_not_reached("Unhandled option code.");
f170852a
LP		 1009 }
1010
d821e6d6
LP		 1011 if (optind < argc && getpid() != 1) {
1012 /* Hmm, when we aren't run as init system
1013 * let's complain about excess arguments */
1014
1015 log_error("Excess arguments.");
1016 return -EINVAL;
1017 }
1018
f170852a
LP		 1019 return 0;
1020}
1021
1022static int help(void) {
1023
2e33c433 1024 printf("%s [OPTIONS...]\n\n"
af2d49f7 1025 "Starts up and maintains the system or user services.\n\n"
e537352b 1026 " -h --help Show this help\n"
e537352b 1027 " --test Determine startup sequence, dump it and exit\n"
b87c2aa6 1028 " --no-pager Do not pipe output into a pager\n"
80876c20 1029 " --dump-configuration-items Dump understood unit configuration items\n"
9e58ff9c 1030 " --unit=UNIT Set default unit\n"
edb9aaa8 1031 " --system Run a system instance, even if PID != 1\n"
af2d49f7 1032 " --user Run a user instance\n"
b9e74c39
LP		 1033 " --dump-core[=BOOL] Dump core on crash\n"
1034 " --crash-vt=NR Change to specified VT on crash\n"
1035 " --crash-reboot[=BOOL] Reboot on crash\n"
1036 " --crash-shell[=BOOL] Run shell on crash\n"
1037 " --confirm-spawn[=BOOL] Ask for confirmation when spawning processes\n"
1038 " --show-status[=BOOL] Show status updates on the console during bootup\n"
c1dc6153 1039 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
9e58ff9c 1040 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
b9e74c39
LP		 1041 " --log-color[=BOOL] Highlight important log messages\n"
1042 " --log-location[=BOOL] Include code location in log messages\n"
0a494f1f
LP		 1043 " --default-standard-output= Set default standard output for services\n"
1044 " --default-standard-error= Set default standard error output for services\n",
5b6319dc 1045 program_invocation_short_name);
f170852a
LP		 1046
1047 return 0;
1048}
1049
b3680f49 1050static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) {
48b90859
LP		 1051 _cleanup_fdset_free_ FDSet *fds = NULL;
1052 _cleanup_fclose_ FILE *f = NULL;
a16e1123
LP		 1053 int r;
1054
1055 assert(m);
1056 assert(_f);
1057 assert(_fds);
1058
6b78f9b4 1059 r = manager_open_serialization(m, &f);
48b90859
LP		 1060 if (r < 0)
1061 return log_error_errno(r, "Failed to create serialization file: %m");
a16e1123 1062
71445ae7 1063 /* Make sure nothing is really destructed when we shut down */
313cefa1 1064 m->n_reloading++;
718db961 1065 bus_manager_send_reloading(m, true);
71445ae7 1066
6b78f9b4 1067 fds = fdset_new();
48b90859
LP		 1068 if (!fds)
1069 return log_oom();
a16e1123 1070
b3680f49 1071 r = manager_serialize(m, f, fds, switching_root);
48b90859
LP		 1072 if (r < 0)
1073 return log_error_errno(r, "Failed to serialize state: %m");
a16e1123 1074
48b90859
LP		 1075 if (fseeko(f, 0, SEEK_SET) == (off_t) -1)
1076 return log_error_errno(errno, "Failed to rewind serialization fd: %m");
a16e1123 1077
6b78f9b4 1078 r = fd_cloexec(fileno(f), false);
48b90859
LP		 1079 if (r < 0)
1080 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m");
a16e1123 1081
6b78f9b4 1082 r = fdset_cloexec(fds, false);
48b90859
LP		 1083 if (r < 0)
1084 return log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m");
a16e1123
LP		 1085
1086 *_f = f;
1087 *_fds = fds;
1088
48b90859
LP		 1089 f = NULL;
1090 fds = NULL;
a16e1123 1091
48b90859 1092 return 0;
a16e1123
LP		 1093}
1094
4096d6f5
LP		 1095static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
1096 struct rlimit nl;
1097 int r;
1098
1099 assert(saved_rlimit);
1100
1101 /* Save the original RLIMIT_NOFILE so that we can reset it
1102 * later when transitioning from the initrd to the main
1103 * systemd or suchlike. */
4a62c710
MS		 1104 if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0)
1105 return log_error_errno(errno, "Reading RLIMIT_NOFILE failed: %m");
4096d6f5
LP		 1106
1107 /* Make sure forked processes get the default kernel setting */
1108 if (!arg_default_rlimit[RLIMIT_NOFILE]) {
1109 struct rlimit *rl;
1110
1111 rl = newdup(struct rlimit, saved_rlimit, 1);
1112 if (!rl)
1113 return log_oom();
1114
1115 arg_default_rlimit[RLIMIT_NOFILE] = rl;
1116 }
1117
1118 /* Bump up the resource limit for ourselves substantially */
1119 nl.rlim_cur = nl.rlim_max = 64*1024;
1120 r = setrlimit_closest(RLIMIT_NOFILE, &nl);
23bbb0de
MS		 1121 if (r < 0)
1122 return log_error_errno(r, "Setting RLIMIT_NOFILE failed: %m");
4096d6f5
LP		 1123
1124 return 0;
1125}
1126
80758717 1127static void test_usr(void) {
80758717 1128
ed1c99fc 1129 /* Check that /usr is not a separate fs */
80758717 1130
871c44a7
LP		 1131 if (dir_is_empty("/usr") <= 0)
1132 return;
1133
8b173b5e 1134 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
871c44a7
LP		 1135 "Some things will probably break (sometimes even silently) in mysterious ways. "
1136 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1137}
1138
a07fdfa3
LP		 1139static int initialize_join_controllers(void) {
1140 /* By default, mount "cpu" + "cpuacct" together, and "net_cls"
1141 * + "net_prio". We'd like to add "cpuset" to the mix, but
f131770b 1142 * "cpuset" doesn't really work for groups with no initialized
a07fdfa3
LP		 1143 * attributes. */
1144
1145 arg_join_controllers = new(char**, 3);
1146 if (!arg_join_controllers)
1147 return -ENOMEM;
1148
1149 arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL);
fe382237
LP		 1150 if (!arg_join_controllers[0])
1151 goto oom;
a6b26d90 1152
fe382237
LP		 1153 arg_join_controllers[1] = strv_new("net_cls", "net_prio", NULL);
1154 if (!arg_join_controllers[1])
1155 goto oom;
a07fdfa3 1156
fe382237 1157 arg_join_controllers[2] = NULL;
a07fdfa3 1158 return 0;
fe382237
LP		 1159
1160oom:
1161 arg_join_controllers = strv_free_free(arg_join_controllers);
1162 return -ENOMEM;
a07fdfa3
LP		 1163}
1164
d3b1c508
LP		 1165static int enforce_syscall_archs(Set *archs) {
1166#ifdef HAVE_SECCOMP
1167 scmp_filter_ctx *seccomp;
1168 Iterator i;
1169 void *id;
1170 int r;
1171
1172 seccomp = seccomp_init(SCMP_ACT_ALLOW);
1173 if (!seccomp)
1174 return log_oom();
1175
1176 SET_FOREACH(id, arg_syscall_archs, i) {
1177 r = seccomp_arch_add(seccomp, PTR_TO_UINT32(id) - 1);
1178 if (r == -EEXIST)
1179 continue;
1180 if (r < 0) {
da927ba9 1181 log_error_errno(r, "Failed to add architecture to seccomp: %m");
d3b1c508
LP		 1182 goto finish;
1183 }
1184 }
1185
8a8bf3c0
LP		 1186 r = seccomp_attr_set(seccomp, SCMP_FLTATR_CTL_NNP, 0);
1187 if (r < 0) {
da927ba9 1188 log_error_errno(r, "Failed to unset NO_NEW_PRIVS: %m");
8a8bf3c0
LP		 1189 goto finish;
1190 }
1191
d3b1c508
LP		 1192 r = seccomp_load(seccomp);
1193 if (r < 0)
da927ba9 1194 log_error_errno(r, "Failed to add install architecture seccomp: %m");
d3b1c508
LP		 1195
1196finish:
1197 seccomp_release(seccomp);
1198 return r;
1199#else
1200 return 0;
1201#endif
1202}
1203
b6e2f329
LP		 1204static int status_welcome(void) {
1205 _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
1206 int r;
1207
1208 r = parse_env_file("/etc/os-release", NEWLINE,
1209 "PRETTY_NAME", &pretty_name,
1210 "ANSI_COLOR", &ansi_color,
1211 NULL);
ece174c5 1212 if (r == -ENOENT)
5ae4d543
LP		 1213 r = parse_env_file("/usr/lib/os-release", NEWLINE,
1214 "PRETTY_NAME", &pretty_name,
1215 "ANSI_COLOR", &ansi_color,
1216 NULL);
b6e2f329
LP		 1217
1218 if (r < 0 && r != -ENOENT)
da927ba9 1219 log_warning_errno(r, "Failed to read os-release file: %m");
b6e2f329 1220
dc9b5816
ZJS		 1221 if (log_get_show_color())
1222 return status_printf(NULL, false, false,
1223 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1224 isempty(ansi_color) ? "1" : ansi_color,
1225 isempty(pretty_name) ? "Linux" : pretty_name);
1226 else
1227 return status_printf(NULL, false, false,
1228 "\nWelcome to %s!\n",
1229 isempty(pretty_name) ? "Linux" : pretty_name);
b6e2f329
LP		 1230}
1231
fdd25311
LP		 1232static int write_container_id(void) {
1233 const char *c;
19854865 1234 int r;
fdd25311
LP		 1235
1236 c = getenv("container");
1237 if (isempty(c))
1238 return 0;
1239
19854865
LP		 1240 r = write_string_file("/run/systemd/container", c, WRITE_STRING_FILE_CREATE);
1241 if (r < 0)
f1f849b0 1242 return log_warning_errno(r, "Failed to write /run/systemd/container, ignoring: %m");
19854865
LP		 1243
1244 return 1;
1245}
1246
1247static int bump_unix_max_dgram_qlen(void) {
1248 _cleanup_free_ char *qlen = NULL;
1249 unsigned long v;
1250 int r;
1251
1252 /* Let's bump the net.unix.max_dgram_qlen sysctl. The kernel
1253 * default of 16 is simply too low. We set the value really
1254 * really early during boot, so that it is actually applied to
1255 * all our sockets, including the $NOTIFY_SOCKET one. */
1256
1257 r = read_one_line_file("/proc/sys/net/unix/max_dgram_qlen", &qlen);
1258 if (r < 0)
1259 return log_warning_errno(r, "Failed to read AF_UNIX datagram queue length, ignoring: %m");
1260
1261 r = safe_atolu(qlen, &v);
1262 if (r < 0)
1263 return log_warning_errno(r, "Failed to parse AF_UNIX datagram queue length, ignoring: %m");
1264
1265 if (v >= DEFAULT_UNIX_MAX_DGRAM_QLEN)
1266 return 0;
1267
1268 qlen = mfree(qlen);
1269 if (asprintf(&qlen, "%lu\n", DEFAULT_UNIX_MAX_DGRAM_QLEN) < 0)
1270 return log_oom();
1271
1272 r = write_string_file("/proc/sys/net/unix/max_dgram_qlen", qlen, 0);
1273 if (r < 0)
1274 return log_full_errno(IN_SET(r, -EROFS, -EPERM, -EACCES) ? LOG_DEBUG : LOG_WARNING, r,
1275 "Failed to bump AF_UNIX datagram queue length, ignoring: %m");
1276
1277 return 1;
fdd25311
LP		 1278}
1279
60918275
LP		 1280int main(int argc, char *argv[]) {
1281 Manager *m = NULL;
22f4096c 1282 int r, retval = EXIT_FAILURE;
9d76d730
LP		 1283 usec_t before_startup, after_startup;
1284 char timespan[FORMAT_TIMESPAN_MAX];
a16e1123
LP		 1285 FDSet *fds = NULL;
1286 bool reexecute = false;
b9080b03 1287 const char *shutdown_verb = NULL;
86caf095
LP		 1288 dual_timestamp initrd_timestamp = DUAL_TIMESTAMP_NULL;
1289 dual_timestamp userspace_timestamp = DUAL_TIMESTAMP_NULL;
1290 dual_timestamp kernel_timestamp = DUAL_TIMESTAMP_NULL;
1291 dual_timestamp security_start_timestamp = DUAL_TIMESTAMP_NULL;
1292 dual_timestamp security_finish_timestamp = DUAL_TIMESTAMP_NULL;
5d6b1584 1293 static char systemd[] = "systemd";
2660882b 1294 bool skip_setup = false;
d3b1c508 1295 unsigned j;
0b3325e7 1296 bool loaded_policy = false;
e96d6be7 1297 bool arm_reboot_watchdog = false;
bf4df7c3 1298 bool queue_default_job = false;
5f5c2f38 1299 bool empty_etc = false;
41669317 1300 char *switch_root_dir = NULL, *switch_root_init = NULL;
86caf095 1301 struct rlimit saved_rlimit_nofile = RLIMIT_MAKE_CONST(0);
cb6531be 1302 const char *error_message = NULL;
27b14a22 1303
058dc6f3 1304#ifdef HAVE_SYSV_COMPAT
2cb1a60d 1305 if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
35b8ca3a 1306 /* This is compatibility support for SysV, where
2cb1a60d
LP		 1307 * calling init as a user is identical to telinit. */
1308
2cb1a60d 1309 execv(SYSTEMCTL_BINARY_PATH, argv);
56f64d95 1310 log_error_errno(errno, "Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
2cb1a60d
LP		 1311 return 1;
1312 }
058dc6f3 1313#endif
2cb1a60d 1314
c3a170f3
HH		 1315 dual_timestamp_from_monotonic(&kernel_timestamp, 0);
1316 dual_timestamp_get(&userspace_timestamp);
1317
0b3325e7
LP		 1318 /* Determine if this is a reexecution or normal bootup. We do
1319 * the full command line parsing much later, so let's just
1320 * have a quick peek here. */
db813c2a
LP		 1321 if (strv_find(argv+1, "--deserialize"))
1322 skip_setup = true;
0b3325e7 1323
2660882b
LP		 1324 /* If we have switched root, do all the special setup
1325 * things */
db813c2a
LP		 1326 if (strv_find(argv+1, "--switched-root"))
1327 skip_setup = false;
d03bc1b8 1328
f3b6a3ed
LP		 1329 /* If we get started via the /sbin/init symlink then we are
1330 called 'init'. After a subsequent reexecution we are then
1331 called 'systemd'. That is confusing, hence let's call us
1332 systemd right-away. */
f3b6a3ed
LP		 1333 program_invocation_short_name = systemd;
1334 prctl(PR_SET_NAME, systemd);
5d6b1584 1335
9a0e6896
LP		 1336 saved_argv = argv;
1337 saved_argc = argc;
f3b6a3ed 1338
2cc59dbf 1339 log_show_color(isatty(STDERR_FILENO) > 0);
c1dc6153 1340 log_set_upgrade_syslog_to_journal(true);
bbe63281 1341
90dc8c2e
MG		 1342 /* Disable the umask logic */
1343 if (getpid() == 1)
1344 umask(0);
1345
75f86906 1346 if (getpid() == 1 && detect_container() <= 0) {
4f8d551f 1347
a866073d 1348 /* Running outside of a container as PID 1 */
b2c23da8 1349 arg_running_as = MANAGER_SYSTEM;
a866073d
LP		 1350 make_null_stdio();
1351 log_set_target(LOG_TARGET_KMSG);
1352 log_open();
1353
21bf2ab0 1354 if (in_initrd())
c3a170f3 1355 initrd_timestamp = userspace_timestamp;
c3ba6250 1356
2660882b 1357 if (!skip_setup) {
d723cd65
AK		 1358 r = mount_setup_early();
1359 if (r < 0) {
1360 error_message = "Failed to early mount API filesystems";
1361 goto finish;
1362 }
c2e0d600 1363 dual_timestamp_get(&security_start_timestamp);
cb6531be
ZJS		 1364 if (mac_selinux_setup(&loaded_policy) < 0) {
1365 error_message = "Failed to load SELinux policy";
0b3325e7 1366 goto finish;
cb6531be
ZJS		 1367 } else if (ima_setup() < 0) {
1368 error_message = "Failed to load IMA policy";
81611586 1369 goto finish;
cb6531be
ZJS		 1370 } else if (mac_smack_setup(&loaded_policy) < 0) {
1371 error_message = "Failed to load SMACK policy";
ffbd2c4d 1372 goto finish;
cb6531be 1373 }
c2e0d600 1374 dual_timestamp_get(&security_finish_timestamp);
81611586 1375 }
0b3325e7 1376
c3dacc8b 1377 if (mac_selinux_init() < 0) {
cb6531be 1378 error_message = "Failed to initialize SELinux policy";
0ff4cdd9 1379 goto finish;
cb6531be 1380 }
7948c4df 1381
72edcff5 1382 if (!skip_setup) {
6369641d 1383 if (clock_is_localtime(NULL) > 0) {
0b3325e7 1384 int min;
7948c4df 1385
c264aeab
KS		 1386 /*
1387 * The very first call of settimeofday() also does a time warp in the kernel.
1388 *
1389 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on
1390 * external tools to take care of maintaining the RTC and do all adjustments.
1391 * This matches the behavior of Windows, which leaves the RTC alone if the
1392 * registry tells that the RTC runs in UTC.
1393 */
24efb112 1394 r = clock_set_timezone(&min);
0b3325e7 1395 if (r < 0)
da927ba9 1396 log_error_errno(r, "Failed to apply local time delta, ignoring: %m");
0b3325e7
LP		 1397 else
1398 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
19e65613
KS		 1399 } else if (!in_initrd()) {
1400 /*
c264aeab 1401 * Do a dummy very first call to seal the kernel's time warp magic.
19e65613
KS		 1402 *
1403 * Do not call this this from inside the initrd. The initrd might not
1404 * carry /etc/adjtime with LOCAL, but the real system could be set up
1405 * that way. In such case, we need to delay the time-warp or the sealing
1406 * until we reach the real system.
c264aeab
KS		 1407 *
1408 * Do no set the kernel's timezone. The concept of local time cannot
1409 * be supported reliably, the time will jump or be incorrect at every daylight
1410 * saving time change. All kernel local time concepts will be treated
1411 * as UTC that way.
19e65613 1412 */
021dd87b 1413 (void) clock_reset_timewarp();
72edcff5 1414 }
021dd87b
LP		 1415
1416 r = clock_apply_epoch();
1417 if (r < 0)
1418 log_error_errno(r, "Current system time is before build time, but cannot correct: %m");
1419 else if (r > 0)
1420 log_info("System time before build time, advancing clock.");
72edcff5 1421 }
a866073d
LP		 1422
1423 /* Set the default for later on, but don't actually
1424 * open the logs like this for now. Note that if we
1425 * are transitioning from the initrd there might still
1426 * be journal fd open, and we shouldn't attempt
1427 * opening that before we parsed /proc/cmdline which
1428 * might redirect output elsewhere. */
1429 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1430
1431 } else if (getpid() == 1) {
a866073d 1432 /* Running inside a container, as PID 1 */
b2c23da8 1433 arg_running_as = MANAGER_SYSTEM;
a866073d 1434 log_set_target(LOG_TARGET_CONSOLE);
99f09825 1435 log_close_console(); /* force reopen of /dev/console */
a866073d
LP		 1436 log_open();
1437
1438 /* For the later on, see above... */
1439 log_set_target(LOG_TARGET_JOURNAL);
1440
c3a170f3
HH		 1441 /* clear the kernel timestamp,
1442 * because we are in a container */
0f5f63c3 1443 kernel_timestamp = DUAL_TIMESTAMP_NULL;
c3a170f3 1444 } else {
a866073d 1445 /* Running as user instance */
b2c23da8 1446 arg_running_as = MANAGER_USER;
eeecf6e6 1447 log_set_target(LOG_TARGET_AUTO);
871e5809 1448 log_open();
c3a170f3
HH		 1449
1450 /* clear the kernel timestamp,
1451 * because we are not PID 1 */
6513d561 1452 kernel_timestamp = DUAL_TIMESTAMP_NULL;
bbe63281 1453 }
a5dab5ce 1454
15a90032
LP		 1455 if (getpid() == 1) {
1456 /* Don't limit the core dump size, so that coredump handlers such as systemd-coredump (which honour the limit)
1457 * will process core dumps for system services by default. */
1458 (void) setrlimit(RLIMIT_CORE, &RLIMIT_MAKE_CONST(RLIM_INFINITY));
1459
1460 /* But at the same time, turn off the core_pattern logic by default, so that no coredumps are stored
1461 * until the systemd-coredump tool is enabled via sysctl. */
1462 if (!skip_setup)
1463 (void) write_string_file("/proc/sys/kernel/core_pattern", "|/bin/false", 0);
1464 }
1465
0c85a4f3 1466 /* Initialize default unit */
e6e242ad 1467 r = free_and_strdup(&arg_default_unit, SPECIAL_DEFAULT_TARGET);
6afa301b 1468 if (r < 0) {
da927ba9 1469 log_emergency_errno(r, "Failed to set default unit %s: %m", SPECIAL_DEFAULT_TARGET);
cb6531be 1470 error_message = "Failed to set default unit";
f170852a 1471 goto finish;
14212119 1472 }
60918275 1473
a07fdfa3 1474 r = initialize_join_controllers();
cb6531be 1475 if (r < 0) {
ff9b60f3 1476 error_message = "Failed to initialize cgroup controllers";
0c85a4f3 1477 goto finish;
cb6531be 1478 }
0c85a4f3 1479
f170852a
LP		 1480 /* Mount /proc, /sys and friends, so that /proc/cmdline and
1481 * /proc/$PID/fd is available. */
c1dae1b3 1482 if (getpid() == 1) {
f84f9974
LP		 1483
1484 /* Load the kernel modules early, so that we kdbus.ko is loaded before kdbusfs shall be mounted */
2e75e2a8
DM		 1485 if (!skip_setup)
1486 kmod_setup();
2e75e2a8 1487
0c85a4f3 1488 r = mount_setup(loaded_policy);
cb6531be
ZJS		 1489 if (r < 0) {
1490 error_message = "Failed to mount API filesystems";
8efe3c01 1491 goto finish;
cb6531be 1492 }
0c85a4f3 1493 }
4ade7963
LP		 1494
1495 /* Reset all signal handlers. */
ce30c8dc
LP		 1496 (void) reset_all_signal_handlers();
1497 (void) ignore_signals(SIGNALS_IGNORE, -1);
078e4539 1498
cb6531be
ZJS		 1499 if (parse_config_file() < 0) {
1500 error_message = "Failed to parse config file";
487393e9 1501 goto finish;
cb6531be 1502 }
487393e9 1503
b2c23da8 1504 if (arg_running_as == MANAGER_SYSTEM) {
b5884878
LP		 1505 r = parse_proc_cmdline(parse_proc_cmdline_item);
1506 if (r < 0)
da927ba9 1507 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
b5884878 1508 }
f170852a 1509
1de1c9c3
LP		 1510 /* Note that this also parses bits from the kernel command
1511 * line, including "debug". */
f170852a
LP		 1512 log_parse_environment();
1513
cb6531be
ZJS		 1514 if (parse_argv(argc, argv) < 0) {
1515 error_message = "Failed to parse commandline arguments";
f170852a 1516 goto finish;
cb6531be 1517 }
f170852a 1518
6bae23a0
TB		 1519 if (arg_action == ACTION_TEST &&
1520 geteuid() == 0) {
b5c6cf87
LP		 1521 log_error("Don't run test mode as root.");
1522 goto finish;
1523 }
1524
b2c23da8 1525 if (arg_running_as == MANAGER_USER &&
6bae23a0
TB		 1526 arg_action == ACTION_RUN &&
1527 sd_booted() <= 0) {
1528 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
1529 goto finish;
1530 }
1531
b2c23da8 1532 if (arg_running_as == MANAGER_SYSTEM &&
fe783b03
LP		 1533 arg_action == ACTION_RUN &&
1534 running_in_chroot() > 0) {
1535 log_error("Cannot be run in a chroot() environment.");
1536 goto finish;
1537 }
1538
0d8c31ff
ZJS		 1539 if (arg_action == ACTION_TEST)
1540 skip_setup = true;
1541
ea4b98e6
AK		 1542 if (arg_action == ACTION_TEST || arg_action == ACTION_HELP)
1543 pager_open(arg_no_pager, false);
b87c2aa6 1544
fa0f4d8a 1545 if (arg_action == ACTION_HELP) {
f170852a
LP		 1546 retval = help();
1547 goto finish;
9ba0bc4e
ZJS		 1548 } else if (arg_action == ACTION_VERSION) {
1549 retval = version();
1550 goto finish;
fa0f4d8a 1551 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
e537352b 1552 unit_dump_config_items(stdout);
22f4096c 1553 retval = EXIT_SUCCESS;
e537352b 1554 goto finish;
fa0f4d8a 1555 } else if (arg_action == ACTION_DONE) {
22f4096c 1556 retval = EXIT_SUCCESS;
4288f619 1557 goto finish;
f170852a
LP		 1558 }
1559
b2c23da8 1560 if (arg_running_as == MANAGER_USER &&
8be28fb1
KS		 1561 !getenv("XDG_RUNTIME_DIR")) {
1562 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
1563 goto finish;
1564 }
1565
fa0f4d8a 1566 assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST);
f170852a 1567
871e5809
LP		 1568 /* Close logging fds, in order not to confuse fdset below */
1569 log_close();
1570
a16e1123 1571 /* Remember open file descriptors for later deserialization */
01e10de3
LP		 1572 r = fdset_new_fill(&fds);
1573 if (r < 0) {
da927ba9 1574 log_emergency_errno(r, "Failed to allocate fd set: %m");
cb6531be 1575 error_message = "Failed to allocate fd set";
01e10de3
LP		 1576 goto finish;
1577 } else
1578 fdset_cloexec(fds, true);
a16e1123 1579
d3b1c508
LP		 1580 if (arg_serialization)
1581 assert_se(fdset_remove(fds, fileno(arg_serialization)) >= 0);
a16e1123 1582
b2c23da8 1583 if (arg_running_as == MANAGER_SYSTEM)
80876c20
LP		 1584 /* Become a session leader if we aren't one yet. */
1585 setsid();
4ade7963 1586
befb5b6a 1587 /* Move out of the way, so that we won't block unmounts */
d250afe7 1588 assert_se(chdir("/") == 0);
befb5b6a 1589
2146621b
LP		 1590 /* Reset the console, but only if this is really init and we
1591 * are freshly booted */
b2c23da8 1592 if (arg_running_as == MANAGER_SYSTEM && arg_action == ACTION_RUN) {
56d96fc0
LP		 1593
1594 /* If we are init, we connect stdin/stdout/stderr to
1595 * /dev/null and make sure we don't have a controlling
1596 * tty. */
1597 release_terminal();
1598
1599 if (getpid() == 1 && !skip_setup)
1600 console_setup();
1601 }
4ade7963 1602
18149b9f 1603 /* Open the logging devices, if possible and necessary */
843d2643 1604 log_open();
4ade7963 1605
b6e2f329
LP		 1606 if (arg_show_status == _SHOW_STATUS_UNSET)
1607 arg_show_status = SHOW_STATUS_YES;
1608
5373d602
LP		 1609 /* Make sure we leave a core dump without panicing the
1610 * kernel. */
ab422445 1611 if (getpid() == 1) {
4fc935ca 1612 install_crash_handler();
97c4f35c 1613
0c85a4f3
LP		 1614 r = mount_cgroup_controllers(arg_join_controllers);
1615 if (r < 0)
1616 goto finish;
1617 }
1618
b2c23da8 1619 if (arg_running_as == MANAGER_SYSTEM) {
75f86906 1620 int v;
c20f5ac7 1621
0d8c31ff
ZJS		 1622 log_info(PACKAGE_STRING " running in %ssystem mode. (" SYSTEMD_FEATURES ")",
1623 arg_action == ACTION_TEST ? "test " : "" );
c20f5ac7 1624
75f86906
LP		 1625 v = detect_virtualization();
1626 if (v > 0)
1627 log_info("Detected virtualization %s.", virtualization_to_string(v));
c20f5ac7 1628
fdd25311
LP		 1629 write_container_id();
1630
d3f86679 1631 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
d9d93745 1632
26a1efdf
LP		 1633 if (in_initrd())
1634 log_info("Running in initial RAM disk.");
1635
3408ba01
LP		 1636 /* Let's check whether /etc is already populated. We
1637 * don't actually really check for that, but use
1638 * /etc/machine-id as flag file. This allows container
1639 * managers and installers to provision a couple of
1640 * files already. If the container manager wants to
1641 * provision the machine ID itself it should pass
ee33e53a 1642 * $container_uuid to PID 1. */
3408ba01 1643
baa1bdf7 1644 empty_etc = access("/etc/machine-id", F_OK) < 0;
5f5c2f38
LP		 1645 if (empty_etc)
1646 log_info("Running with unpopulated /etc.");
d8160f21 1647 } else {
1f97091d
LP		 1648 _cleanup_free_ char *t;
1649
1650 t = uid_to_name(getuid());
0d8c31ff
ZJS		 1651 log_debug(PACKAGE_STRING " running in %suser mode for user "UID_FMT"/%s. (" SYSTEMD_FEATURES ")",
1652 arg_action == ACTION_TEST ? " test" : "", getuid(), t);
d8160f21 1653 }
a5dab5ce 1654
b2c23da8 1655 if (arg_running_as == MANAGER_SYSTEM && !skip_setup) {
031886ed 1656 if (arg_show_status > 0)
888c6216
LP		 1657 status_welcome();
1658
888c6216 1659 hostname_setup();
ee48dbd5 1660 machine_id_setup(NULL, arg_machine_id);
888c6216 1661 loopback_setup();
19854865 1662 bump_unix_max_dgram_qlen();
490aed58 1663
80758717 1664 test_usr();
af5bc85d 1665 }
302e8c4c 1666
947292ee 1667 if (arg_running_as == MANAGER_SYSTEM && arg_runtime_watchdog > 0 && arg_runtime_watchdog != USEC_INFINITY)
e96d6be7
LP		 1668 watchdog_set_timeout(&arg_runtime_watchdog);
1669
3a43da28 1670 if (arg_timer_slack_nsec != NSEC_INFINITY)
aa0f64ac 1671 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
56f64d95 1672 log_error_errno(errno, "Failed to adjust timer slack: %m");
aa0f64ac 1673
a103496c
IP		 1674 if (!cap_test_all(arg_capability_bounding_set)) {
1675 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set);
ec8927ca 1676 if (r < 0) {
da927ba9 1677 log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m");
cb6531be 1678 error_message = "Failed to drop capability bounding set of usermode helpers";
ec8927ca
LP		 1679 goto finish;
1680 }
a103496c 1681 r = capability_bounding_set_drop(arg_capability_bounding_set, true);
939b8f14 1682 if (r < 0) {
da927ba9 1683 log_emergency_errno(r, "Failed to drop capability bounding set: %m");
cb6531be 1684 error_message = "Failed to drop capability bounding set";
939b8f14
LP		 1685 goto finish;
1686 }
ec8927ca
LP		 1687 }
1688
d3b1c508
LP		 1689 if (arg_syscall_archs) {
1690 r = enforce_syscall_archs(arg_syscall_archs);
cb6531be
ZJS		 1691 if (r < 0) {
1692 error_message = "Failed to set syscall architectures";
d3b1c508 1693 goto finish;
cb6531be 1694 }
d3b1c508
LP		 1695 }
1696
61b9b203 1697 if (arg_running_as == MANAGER_USER)
d4447f4d 1698 /* Become reaper of our children */
61b9b203 1699 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0)
56f64d95 1700 log_warning_errno(errno, "Failed to make us a subreaper: %m");
d4447f4d 1701
b2c23da8 1702 if (arg_running_as == MANAGER_SYSTEM) {
4096d6f5
LP		 1703 bump_rlimit_nofile(&saved_rlimit_nofile);
1704
5f5c2f38 1705 if (empty_etc) {
304b3079 1706 r = unit_file_preset_all(UNIT_FILE_SYSTEM, false, NULL, UNIT_FILE_PRESET_ENABLE_ONLY, false, NULL, 0);
5f5c2f38 1707 if (r < 0)
287a0de4 1708 log_full_errno(r == -EEXIST ? LOG_NOTICE : LOG_WARNING, r, "Failed to populate /etc with preset unit settings, ignoring: %m");
5f5c2f38
LP		 1709 else
1710 log_info("Populated /etc with preset unit settings.");
1711 }
1712 }
1713
0d8c31ff 1714 r = manager_new(arg_running_as, arg_action == ACTION_TEST, &m);
e96d6be7 1715 if (r < 0) {
da927ba9 1716 log_emergency_errno(r, "Failed to allocate manager object: %m");
cb6531be 1717 error_message = "Failed to allocate manager object";
60918275
LP		 1718 goto finish;
1719 }
1720
9e58ff9c 1721 m->confirm_spawn = arg_confirm_spawn;
e96d6be7
LP		 1722 m->runtime_watchdog = arg_runtime_watchdog;
1723 m->shutdown_watchdog = arg_shutdown_watchdog;
c3a170f3
HH		 1724 m->userspace_timestamp = userspace_timestamp;
1725 m->kernel_timestamp = kernel_timestamp;
c3a170f3 1726 m->initrd_timestamp = initrd_timestamp;
c2e0d600
TA		 1727 m->security_start_timestamp = security_start_timestamp;
1728 m->security_finish_timestamp = security_finish_timestamp;
9e58ff9c 1729
06af2a04 1730 manager_set_defaults(m);
27d340c7 1731 manager_set_show_status(m, arg_show_status);
e2680723 1732 manager_set_first_boot(m, empty_etc);
27d340c7 1733
bf4df7c3 1734 /* Remember whether we should queue the default job */
d3b1c508 1735 queue_default_job = !arg_serialization || arg_switched_root;
bf4df7c3 1736
9d76d730
LP		 1737 before_startup = now(CLOCK_MONOTONIC);
1738
d3b1c508 1739 r = manager_startup(m, arg_serialization, fds);
e96d6be7 1740 if (r < 0)
da927ba9 1741 log_error_errno(r, "Failed to fully start up daemon: %m");
a16e1123 1742
bf4df7c3
LP		 1743 /* This will close all file descriptors that were opened, but
1744 * not claimed by any unit. */
2feceb5e 1745 fds = fdset_free(fds);
f50e0a01 1746
74ca738f 1747 arg_serialization = safe_fclose(arg_serialization);
bf4df7c3
LP		 1748
1749 if (queue_default_job) {
4afd3348 1750 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1c27d3f3 1751 Unit *target = NULL;
bacbccb7 1752 Job *default_unit_job;
398ef8ba 1753
fa0f4d8a 1754 log_debug("Activating default unit: %s", arg_default_unit);
a16e1123 1755
e96d6be7 1756 r = manager_load_unit(m, arg_default_unit, NULL, &error, &target);
718db961
LP		 1757 if (r < 0)
1758 log_error("Failed to load default target: %s", bus_error_message(&error, r));
1759 else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND)
c33b3297 1760 log_error_errno(target->load_error, "Failed to load default target: %m");
ac155bb8 1761 else if (target->load_state == UNIT_MASKED)
6daf4f90 1762 log_error("Default target masked.");
27b14a22 1763
ac155bb8 1764 if (!target || target->load_state != UNIT_LOADED) {
a16e1123 1765 log_info("Trying to load rescue target...");
1c27d3f3 1766
e96d6be7
LP		 1767 r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target);
1768 if (r < 0) {
4104970e 1769 log_emergency("Failed to load rescue target: %s", bus_error_message(&error, r));
cb6531be 1770 error_message = "Failed to load rescue target";
a16e1123 1771 goto finish;
11ddb6f4 1772 } else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND) {
c33b3297 1773 log_emergency_errno(target->load_error, "Failed to load rescue target: %m");
cb6531be 1774 error_message = "Failed to load rescue target";
1c27d3f3 1775 goto finish;
ac155bb8 1776 } else if (target->load_state == UNIT_MASKED) {
4104970e 1777 log_emergency("Rescue target masked.");
cb6531be 1778 error_message = "Rescue target masked";
00dc5d76 1779 goto finish;
a16e1123
LP		 1780 }
1781 }
37d88da7 1782
ac155bb8 1783 assert(target->load_state == UNIT_LOADED);
00dc5d76 1784
fa0f4d8a 1785 if (arg_action == ACTION_TEST) {
40d50879 1786 printf("-> By units:\n");
a16e1123
LP		 1787 manager_dump_units(m, stdout, "\t");
1788 }
1789
4bd29fe5 1790 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, &error, &default_unit_job);
ab17a050 1791 if (r == -EPERM) {
718db961 1792 log_debug("Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
ab17a050 1793
5022ce71
LP		 1794 sd_bus_error_free(&error);
1795
4bd29fe5 1796 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, &error, &default_unit_job);
ab17a050 1797 if (r < 0) {
4104970e 1798 log_emergency("Failed to start default target: %s", bus_error_message(&error, r));
cb6531be 1799 error_message = "Failed to start default target";
ab17a050
LP		 1800 goto finish;
1801 }
1802 } else if (r < 0) {
4104970e 1803 log_emergency("Failed to isolate default target: %s", bus_error_message(&error, r));
cb6531be 1804 error_message = "Failed to isolate default target";
37d88da7
LP		 1805 goto finish;
1806 }
ab17a050 1807
bacbccb7 1808 m->default_unit_job_id = default_unit_job->id;
60918275 1809
07672f49
LP		 1810 after_startup = now(CLOCK_MONOTONIC);
1811 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
1812 "Loaded units and determined initial transaction in %s.",
fdb14b7e 1813 format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 100 * USEC_PER_MSEC));
07672f49 1814
fa0f4d8a 1815 if (arg_action == ACTION_TEST) {
40d50879 1816 printf("-> By jobs:\n");
a16e1123 1817 manager_dump_jobs(m, stdout, "\t");
22f4096c 1818 retval = EXIT_SUCCESS;
a16e1123
LP		 1819 goto finish;
1820 }
e965d56d 1821 }
d46de8a1 1822
a16e1123 1823 for (;;) {
e96d6be7
LP		 1824 r = manager_loop(m);
1825 if (r < 0) {
da927ba9 1826 log_emergency_errno(r, "Failed to run main loop: %m");
cb6531be 1827 error_message = "Failed to run main loop";
a16e1123
LP		 1828 goto finish;
1829 }
11dd41ce 1830
a16e1123 1831 switch (m->exit_code) {
e965d56d 1832
a16e1123 1833 case MANAGER_RELOAD:
e015090f 1834 log_info("Reloading.");
06af2a04
TB		 1835
1836 r = parse_config_file();
1837 if (r < 0)
1838 log_error("Failed to parse config file.");
1839
1840 manager_set_defaults(m);
1841
e96d6be7
LP		 1842 r = manager_reload(m);
1843 if (r < 0)
da927ba9 1844 log_error_errno(r, "Failed to reload: %m");
a16e1123 1845 break;
cea8e32e 1846
a16e1123 1847 case MANAGER_REEXECUTE:
664f88a7 1848
cb6531be 1849 if (prepare_reexecute(m, &arg_serialization, &fds, false) < 0) {
6b9af963 1850 error_message = "Failed to prepare for reexecution";
a16e1123 1851 goto finish;
cb6531be 1852 }
60918275 1853
a16e1123 1854 reexecute = true;
e015090f 1855 log_notice("Reexecuting.");
a16e1123
LP		 1856 goto finish;
1857
664f88a7
LP		 1858 case MANAGER_SWITCH_ROOT:
1859 /* Steal the switch root parameters */
41669317 1860 switch_root_dir = m->switch_root;
664f88a7
LP		 1861 switch_root_init = m->switch_root_init;
1862 m->switch_root = m->switch_root_init = NULL;
1863
1864 if (!switch_root_init)
cb6531be 1865 if (prepare_reexecute(m, &arg_serialization, &fds, true) < 0) {
6b9af963 1866 error_message = "Failed to prepare for reexecution";
664f88a7 1867 goto finish;
cb6531be 1868 }
664f88a7
LP		 1869
1870 reexecute = true;
1871 log_notice("Switching root.");
1872 goto finish;
1873
287419c1 1874 case MANAGER_EXIT:
97792515
LP		 1875 retval = m->return_value;
1876
8ebfe0cb 1877 if (m->running_as == MANAGER_USER) {
8ebfe0cb
DH		 1878 log_debug("Exit.");
1879 goto finish;
1880 }
1881
1882 /* fallthrough */
b9080b03
FF		 1883 case MANAGER_REBOOT:
1884 case MANAGER_POWEROFF:
1885 case MANAGER_HALT:
1886 case MANAGER_KEXEC: {
1887 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
287419c1 1888 [MANAGER_EXIT] = "exit",
b9080b03
FF		 1889 [MANAGER_REBOOT] = "reboot",
1890 [MANAGER_POWEROFF] = "poweroff",
1891 [MANAGER_HALT] = "halt",
1892 [MANAGER_KEXEC] = "kexec"
1893 };
1894
1895 assert_se(shutdown_verb = table[m->exit_code]);
e96d6be7 1896 arm_reboot_watchdog = m->exit_code == MANAGER_REBOOT;
b9080b03
FF		 1897
1898 log_notice("Shutting down.");
1899 goto finish;
1900 }
1901
a16e1123
LP		 1902 default:
1903 assert_not_reached("Unknown exit code.");
1904 }
1905 }
f170852a 1906
60918275 1907finish:
b87c2aa6
ZJS		 1908 pager_close();
1909
97792515 1910 if (m)
81f5fc2d 1911 arg_shutdown_watchdog = m->shutdown_watchdog;
fe382237 1912
06d8d842 1913 m = manager_free(m);
60918275 1914
1f6b4113 1915 for (j = 0; j < ELEMENTSOF(arg_default_rlimit); j++)
a1e58e8e 1916 arg_default_rlimit[j] = mfree(arg_default_rlimit[j]);
c93ff2e9 1917
97b11eed 1918 arg_default_unit = mfree(arg_default_unit);
fe382237 1919 arg_join_controllers = strv_free_free(arg_join_controllers);
97b11eed 1920 arg_default_environment = strv_free(arg_default_environment);
525d3cc7 1921 arg_syscall_archs = set_free(arg_syscall_archs);
d3b1c508 1922
cc56fafe 1923 mac_selinux_finish();
b2bb3dbe 1924
a16e1123 1925 if (reexecute) {
664f88a7 1926 const char **args;
e564a982 1927 unsigned i, args_size;
a16e1123 1928
664f88a7
LP		 1929 /* Close and disarm the watchdog, so that the new
1930 * instance can reinitialize it, but doesn't get
1931 * rebooted while we do that */
1932 watchdog_close(true);
a16e1123 1933
4096d6f5
LP		 1934 /* Reset the RLIMIT_NOFILE to the kernel default, so
1935 * that the new systemd can pass the kernel default to
1936 * its child processes */
1937 if (saved_rlimit_nofile.rlim_cur > 0)
92ca4cac 1938 (void) setrlimit(RLIMIT_NOFILE, &saved_rlimit_nofile);
4096d6f5 1939
41669317 1940 if (switch_root_dir) {
cee530bb
LP		 1941 /* Kill all remaining processes from the
1942 * initrd, but don't wait for them, so that we
1943 * can handle the SIGCHLD for them after
1944 * deserializing. */
0bee65f0 1945 broadcast_signal(SIGTERM, false, true);
bd3fa1d2 1946
5a4bf02f
HH		 1947 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1948 r = switch_root(switch_root_dir, "/mnt", true, MS_MOVE);
41669317 1949 if (r < 0)
da927ba9 1950 log_error_errno(r, "Failed to switch root, trying to continue: %m");
41669317 1951 }
a16e1123 1952
d03bc1b8 1953 args_size = MAX(6, argc+1);
e564a982 1954 args = newa(const char*, args_size);
a16e1123 1955
664f88a7 1956 if (!switch_root_init) {
5ffa8c81 1957 char sfd[DECIMAL_STR_MAX(int) + 1];
a16e1123 1958
664f88a7
LP		 1959 /* First try to spawn ourselves with the right
1960 * path, and with full serialization. We do
1961 * this only if the user didn't specify an
1962 * explicit init to spawn. */
edb9aaa8 1963
d3b1c508 1964 assert(arg_serialization);
664f88a7 1965 assert(fds);
edb9aaa8 1966
5ffa8c81 1967 xsprintf(sfd, "%i", fileno(arg_serialization));
edb9aaa8 1968
664f88a7
LP		 1969 i = 0;
1970 args[i++] = SYSTEMD_BINARY_PATH;
41669317 1971 if (switch_root_dir)
2660882b 1972 args[i++] = "--switched-root";
b2c23da8 1973 args[i++] = arg_running_as == MANAGER_SYSTEM ? "--system" : "--user";
664f88a7
LP		 1974 args[i++] = "--deserialize";
1975 args[i++] = sfd;
1976 args[i++] = NULL;
edb9aaa8 1977
ce8aba56
KS		 1978 /* do not pass along the environment we inherit from the kernel or initrd */
1979 if (switch_root_dir)
92ca4cac 1980 (void) clearenv();
ce8aba56 1981
e564a982 1982 assert(i <= args_size);
dcadc967
EV		 1983
1984 /*
1985 * We want valgrind to print its memory usage summary before reexecution.
1986 * Valgrind won't do this is on its own on exec(), but it will do it on exit().
1987 * Hence, to ensure we get a summary here, fork() off a child, let it exit() cleanly,
1988 * so that it prints the summary, and wait() for it in the parent, before proceeding into the exec().
1989 */
1990 valgrind_summary_hack();
1991
92ca4cac 1992 (void) execv(args[0], (char* const*) args);
664f88a7 1993 }
6e98720f 1994
664f88a7
LP		 1995 /* Try the fallback, if there is any, without any
1996 * serialization. We pass the original argv[] and
1997 * envp[]. (Well, modulo the ordering changes due to
1998 * getopt() in argv[], and some cleanups in envp[],
1999 * but let's hope that doesn't matter.) */
a16e1123 2000
74ca738f 2001 arg_serialization = safe_fclose(arg_serialization);
2feceb5e 2002 fds = fdset_free(fds);
a16e1123 2003
a504223d 2004 /* Reopen the console */
92ca4cac 2005 (void) make_console_stdio();
a504223d 2006
d3b1c508 2007 for (j = 1, i = 1; j < (unsigned) argc; j++)
664f88a7 2008 args[i++] = argv[j];
a16e1123 2009 args[i++] = NULL;
e564a982 2010 assert(i <= args_size);
b8f83232 2011
1b6d7fa7 2012 /* Reenable any blocked signals, especially important
5a85ca1c 2013 * if we switch from initial ramdisk to init=... */
ce30c8dc
LP		 2014 (void) reset_all_signal_handlers();
2015 (void) reset_signal_mask();
5a85ca1c 2016
b8f83232
LP		 2017 if (switch_root_init) {
2018 args[0] = switch_root_init;
92ca4cac 2019 (void) execv(args[0], (char* const*) args);
56f64d95 2020 log_warning_errno(errno, "Failed to execute configured init, trying fallback: %m");
b8f83232
LP		 2021 }
2022
2023 args[0] = "/sbin/init";
92ca4cac 2024 (void) execv(args[0], (char* const*) args);
a16e1123 2025
745e2fb7
KS		 2026 if (errno == ENOENT) {
2027 log_warning("No /sbin/init, trying fallback");
b8f83232 2028
745e2fb7
KS		 2029 args[0] = "/bin/sh";
2030 args[1] = NULL;
92ca4cac 2031 (void) execv(args[0], (char* const*) args);
56f64d95 2032 log_error_errno(errno, "Failed to execute /bin/sh, giving up: %m");
745e2fb7 2033 } else
56f64d95 2034 log_warning_errno(errno, "Failed to execute /sbin/init, giving up: %m");
a16e1123
LP		 2035 }
2036
74ca738f 2037 arg_serialization = safe_fclose(arg_serialization);
2feceb5e 2038 fds = fdset_free(fds);
a16e1123 2039
54b434b1
LP		 2040#ifdef HAVE_VALGRIND_VALGRIND_H
2041 /* If we are PID 1 and running under valgrind, then let's exit
2042 * here explicitly. valgrind will only generate nice output on
2043 * exit(), not on exec(), hence let's do the former not the
2044 * latter here. */
2045 if (getpid() == 1 && RUNNING_ON_VALGRIND)
2046 return 0;
2047#endif
2048
b9080b03 2049 if (shutdown_verb) {
b1e90ec5 2050 char log_level[DECIMAL_STR_MAX(int) + 1];
287419c1
AC		 2051 char exit_code[DECIMAL_STR_MAX(uint8_t) + 1];
2052 const char* command_line[11] = {
b9080b03
FF		 2053 SYSTEMD_SHUTDOWN_BINARY_PATH,
2054 shutdown_verb,
b1e90ec5
ZJS		 2055 "--log-level", log_level,
2056 "--log-target",
b9080b03 2057 };
b1e90ec5 2058 unsigned pos = 5;
e3e45d4f 2059 _cleanup_strv_free_ char **env_block = NULL;
15bd5aee
LP		 2060
2061 assert(command_line[pos] == NULL);
e3e45d4f 2062 env_block = strv_copy(environ);
b9080b03 2063
5ffa8c81 2064 xsprintf(log_level, "%d", log_get_max_level());
b1e90ec5
ZJS		 2065
2066 switch (log_get_target()) {
92ca4cac 2067
b1e90ec5
ZJS		 2068 case LOG_TARGET_KMSG:
2069 case LOG_TARGET_JOURNAL_OR_KMSG:
2070 case LOG_TARGET_SYSLOG_OR_KMSG:
2071 command_line[pos++] = "kmsg";
2072 break;
2073
10f00ff1
ILG		 2074 case LOG_TARGET_NULL:
2075 command_line[pos++] = "null";
2076 break;
2077
b1e90ec5
ZJS		 2078 case LOG_TARGET_CONSOLE:
2079 default:
2080 command_line[pos++] = "console";
2081 break;
2082 };
2083
2084 if (log_get_show_color())
2085 command_line[pos++] = "--log-color";
2086
2087 if (log_get_show_location())
2088 command_line[pos++] = "--log-location";
2089
287419c1
AC		 2090 if (streq(shutdown_verb, "exit")) {
2091 command_line[pos++] = "--exit-code";
2092 command_line[pos++] = exit_code;
97792515 2093 xsprintf(exit_code, "%d", retval);
287419c1
AC		 2094 }
2095
26abdc73 2096 assert(pos < ELEMENTSOF(command_line));
b1e90ec5 2097
e96d6be7 2098 if (arm_reboot_watchdog && arg_shutdown_watchdog > 0) {
e3e45d4f 2099 char *e;
d18f337c 2100
e96d6be7
LP		 2101 /* If we reboot let's set the shutdown
2102 * watchdog and tell the shutdown binary to
2103 * repeatedly ping it */
c2cc6b9a
LP		 2104 r = watchdog_set_timeout(&arg_shutdown_watchdog);
2105 watchdog_close(r < 0);
e96d6be7 2106
e3e45d4f
SP		 2107 /* Tell the binary how often to ping, ignore failure */
2108 if (asprintf(&e, "WATCHDOG_USEC="USEC_FMT, arg_shutdown_watchdog) > 0)
92ca4cac 2109 (void) strv_push(&env_block, e);
e3e45d4f 2110 } else
e96d6be7
LP		 2111 watchdog_close(true);
2112
66713f77
LP		 2113 /* Avoid the creation of new processes forked by the
2114 * kernel; at this point, we will not listen to the
2115 * signals anyway */
75f86906 2116 if (detect_container() <= 0)
e155a0aa 2117 (void) cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
ad929bcc 2118
d18f337c 2119 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
56f64d95 2120 log_error_errno(errno, "Failed to execute shutdown binary, %s: %m",
b1e90ec5 2121 getpid() == 1 ? "freezing" : "quitting");
b9080b03
FF		 2122 }
2123
cb6531be
ZJS		 2124 if (getpid() == 1) {
2125 if (error_message)
2126 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
1fc464f6 2127 ANSI_HIGHLIGHT_RED "!!!!!!" ANSI_NORMAL,
cb6531be 2128 "%s, freezing.", error_message);
b9e74c39 2129 freeze_or_reboot();
cb6531be 2130 }
c3b3c274 2131
60918275
LP		 2132 return retval;
2133}
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