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