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Merge pull request #1093 from poettering/unified-prepare
[thirdparty/systemd.git] / src / core / main.c
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 = DUAL_TIMESTAMP_NULL;
1395 }
1396
1397 /* Initialize default unit */
1398 r = set_default_unit(SPECIAL_DEFAULT_TARGET);
1399 if (r < 0) {
1400 log_emergency_errno(r, "Failed to set default unit %s: %m", SPECIAL_DEFAULT_TARGET);
1401 error_message = "Failed to set default unit";
1402 goto finish;
1403 }
1404
1405 r = initialize_join_controllers();
1406 if (r < 0) {
1407 error_message = "Failed to initialize cgroup controllers";
1408 goto finish;
1409 }
1410
1411 /* Mount /proc, /sys and friends, so that /proc/cmdline and
1412 * /proc/$PID/fd is available. */
1413 if (getpid() == 1) {
1414
1415 /* Load the kernel modules early, so that we kdbus.ko is loaded before kdbusfs shall be mounted */
1416 if (!skip_setup)
1417 kmod_setup();
1418
1419 r = mount_setup(loaded_policy);
1420 if (r < 0) {
1421 error_message = "Failed to mount API filesystems";
1422 goto finish;
1423 }
1424 }
1425
1426 /* Reset all signal handlers. */
1427 (void) reset_all_signal_handlers();
1428 (void) ignore_signals(SIGNALS_IGNORE, -1);
1429
1430 if (parse_config_file() < 0) {
1431 error_message = "Failed to parse config file";
1432 goto finish;
1433 }
1434
1435 if (arg_running_as == MANAGER_SYSTEM) {
1436 r = parse_proc_cmdline(parse_proc_cmdline_item);
1437 if (r < 0)
1438 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
1439 }
1440
1441 /* Note that this also parses bits from the kernel command
1442 * line, including "debug". */
1443 log_parse_environment();
1444
1445 if (parse_argv(argc, argv) < 0) {
1446 error_message = "Failed to parse commandline arguments";
1447 goto finish;
1448 }
1449
1450 if (arg_action == ACTION_TEST &&
1451 geteuid() == 0) {
1452 log_error("Don't run test mode as root.");
1453 goto finish;
1454 }
1455
1456 if (arg_running_as == MANAGER_USER &&
1457 arg_action == ACTION_RUN &&
1458 sd_booted() <= 0) {
1459 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
1460 goto finish;
1461 }
1462
1463 if (arg_running_as == MANAGER_SYSTEM &&
1464 arg_action == ACTION_RUN &&
1465 running_in_chroot() > 0) {
1466 log_error("Cannot be run in a chroot() environment.");
1467 goto finish;
1468 }
1469
1470 if (arg_action == ACTION_TEST)
1471 skip_setup = true;
1472
1473 pager_open_if_enabled();
1474
1475 if (arg_action == ACTION_HELP) {
1476 retval = help();
1477 goto finish;
1478 } else if (arg_action == ACTION_VERSION) {
1479 retval = version();
1480 goto finish;
1481 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
1482 unit_dump_config_items(stdout);
1483 retval = EXIT_SUCCESS;
1484 goto finish;
1485 } else if (arg_action == ACTION_DONE) {
1486 retval = EXIT_SUCCESS;
1487 goto finish;
1488 }
1489
1490 if (arg_running_as == MANAGER_USER &&
1491 !getenv("XDG_RUNTIME_DIR")) {
1492 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
1493 goto finish;
1494 }
1495
1496 assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST);
1497
1498 /* Close logging fds, in order not to confuse fdset below */
1499 log_close();
1500
1501 /* Remember open file descriptors for later deserialization */
1502 r = fdset_new_fill(&fds);
1503 if (r < 0) {
1504 log_emergency_errno(r, "Failed to allocate fd set: %m");
1505 error_message = "Failed to allocate fd set";
1506 goto finish;
1507 } else
1508 fdset_cloexec(fds, true);
1509
1510 if (arg_serialization)
1511 assert_se(fdset_remove(fds, fileno(arg_serialization)) >= 0);
1512
1513 if (arg_running_as == MANAGER_SYSTEM)
1514 /* Become a session leader if we aren't one yet. */
1515 setsid();
1516
1517 /* Move out of the way, so that we won't block unmounts */
1518 assert_se(chdir("/") == 0);
1519
1520 /* Reset the console, but only if this is really init and we
1521 * are freshly booted */
1522 if (arg_running_as == MANAGER_SYSTEM && arg_action == ACTION_RUN) {
1523
1524 /* If we are init, we connect stdin/stdout/stderr to
1525 * /dev/null and make sure we don't have a controlling
1526 * tty. */
1527 release_terminal();
1528
1529 if (getpid() == 1 && !skip_setup)
1530 console_setup();
1531 }
1532
1533 /* Open the logging devices, if possible and necessary */
1534 log_open();
1535
1536 if (arg_show_status == _SHOW_STATUS_UNSET)
1537 arg_show_status = SHOW_STATUS_YES;
1538
1539 /* Make sure we leave a core dump without panicing the
1540 * kernel. */
1541 if (getpid() == 1) {
1542 install_crash_handler();
1543
1544 r = mount_cgroup_controllers(arg_join_controllers);
1545 if (r < 0)
1546 goto finish;
1547 }
1548
1549 if (arg_running_as == MANAGER_SYSTEM) {
1550 const char *virtualization = NULL;
1551
1552 log_info(PACKAGE_STRING " running in %ssystem mode. (" SYSTEMD_FEATURES ")",
1553 arg_action == ACTION_TEST ? "test " : "" );
1554
1555 detect_virtualization(&virtualization);
1556 if (virtualization)
1557 log_info("Detected virtualization %s.", virtualization);
1558
1559 write_container_id();
1560
1561 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1562
1563 if (in_initrd())
1564 log_info("Running in initial RAM disk.");
1565
1566 /* Let's check whether /etc is already populated. We
1567 * don't actually really check for that, but use
1568 * /etc/machine-id as flag file. This allows container
1569 * managers and installers to provision a couple of
1570 * files already. If the container manager wants to
1571 * provision the machine ID itself it should pass
1572 * $container_uuid to PID 1. */
1573
1574 empty_etc = access("/etc/machine-id", F_OK) < 0;
1575 if (empty_etc)
1576 log_info("Running with unpopulated /etc.");
1577 } else {
1578 _cleanup_free_ char *t;
1579
1580 t = uid_to_name(getuid());
1581 log_debug(PACKAGE_STRING " running in %suser mode for user "UID_FMT"/%s. (" SYSTEMD_FEATURES ")",
1582 arg_action == ACTION_TEST ? " test" : "", getuid(), t);
1583 }
1584
1585 if (arg_running_as == MANAGER_SYSTEM && !skip_setup) {
1586 if (arg_show_status > 0)
1587 status_welcome();
1588
1589 hostname_setup();
1590 machine_id_setup(NULL);
1591 loopback_setup();
1592
1593 test_mtab();
1594 test_usr();
1595 }
1596
1597 if (arg_running_as == MANAGER_SYSTEM && arg_runtime_watchdog > 0)
1598 watchdog_set_timeout(&arg_runtime_watchdog);
1599
1600 if (arg_timer_slack_nsec != NSEC_INFINITY)
1601 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
1602 log_error_errno(errno, "Failed to adjust timer slack: %m");
1603
1604 if (arg_capability_bounding_set_drop) {
1605 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop);
1606 if (r < 0) {
1607 log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m");
1608 error_message = "Failed to drop capability bounding set of usermode helpers";
1609 goto finish;
1610 }
1611 r = capability_bounding_set_drop(arg_capability_bounding_set_drop, true);
1612 if (r < 0) {
1613 log_emergency_errno(r, "Failed to drop capability bounding set: %m");
1614 error_message = "Failed to drop capability bounding set";
1615 goto finish;
1616 }
1617 }
1618
1619 if (arg_syscall_archs) {
1620 r = enforce_syscall_archs(arg_syscall_archs);
1621 if (r < 0) {
1622 error_message = "Failed to set syscall architectures";
1623 goto finish;
1624 }
1625 }
1626
1627 if (arg_running_as == MANAGER_USER)
1628 /* Become reaper of our children */
1629 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0)
1630 log_warning_errno(errno, "Failed to make us a subreaper: %m");
1631
1632 if (arg_running_as == MANAGER_SYSTEM) {
1633 bump_rlimit_nofile(&saved_rlimit_nofile);
1634
1635 if (empty_etc) {
1636 r = unit_file_preset_all(UNIT_FILE_SYSTEM, false, NULL, UNIT_FILE_PRESET_ENABLE_ONLY, false, NULL, 0);
1637 if (r < 0)
1638 log_warning_errno(r, "Failed to populate /etc with preset unit settings, ignoring: %m");
1639 else
1640 log_info("Populated /etc with preset unit settings.");
1641 }
1642 }
1643
1644 r = manager_new(arg_running_as, arg_action == ACTION_TEST, &m);
1645 if (r < 0) {
1646 log_emergency_errno(r, "Failed to allocate manager object: %m");
1647 error_message = "Failed to allocate manager object";
1648 goto finish;
1649 }
1650
1651 m->confirm_spawn = arg_confirm_spawn;
1652 m->runtime_watchdog = arg_runtime_watchdog;
1653 m->shutdown_watchdog = arg_shutdown_watchdog;
1654 m->userspace_timestamp = userspace_timestamp;
1655 m->kernel_timestamp = kernel_timestamp;
1656 m->initrd_timestamp = initrd_timestamp;
1657 m->security_start_timestamp = security_start_timestamp;
1658 m->security_finish_timestamp = security_finish_timestamp;
1659
1660 manager_set_defaults(m);
1661 manager_set_show_status(m, arg_show_status);
1662 manager_set_first_boot(m, empty_etc);
1663
1664 /* Remember whether we should queue the default job */
1665 queue_default_job = !arg_serialization || arg_switched_root;
1666
1667 before_startup = now(CLOCK_MONOTONIC);
1668
1669 r = manager_startup(m, arg_serialization, fds);
1670 if (r < 0)
1671 log_error_errno(r, "Failed to fully start up daemon: %m");
1672
1673 /* This will close all file descriptors that were opened, but
1674 * not claimed by any unit. */
1675 fdset_free(fds);
1676 fds = NULL;
1677
1678 if (arg_serialization) {
1679 fclose(arg_serialization);
1680 arg_serialization = NULL;
1681 }
1682
1683 if (queue_default_job) {
1684 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1685 Unit *target = NULL;
1686 Job *default_unit_job;
1687
1688 log_debug("Activating default unit: %s", arg_default_unit);
1689
1690 r = manager_load_unit(m, arg_default_unit, NULL, &error, &target);
1691 if (r < 0)
1692 log_error("Failed to load default target: %s", bus_error_message(&error, r));
1693 else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND)
1694 log_error_errno(target->load_error, "Failed to load default target: %m");
1695 else if (target->load_state == UNIT_MASKED)
1696 log_error("Default target masked.");
1697
1698 if (!target || target->load_state != UNIT_LOADED) {
1699 log_info("Trying to load rescue target...");
1700
1701 r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target);
1702 if (r < 0) {
1703 log_emergency("Failed to load rescue target: %s", bus_error_message(&error, r));
1704 error_message = "Failed to load rescue target";
1705 goto finish;
1706 } else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND) {
1707 log_emergency_errno(target->load_error, "Failed to load rescue target: %m");
1708 error_message = "Failed to load rescue target";
1709 goto finish;
1710 } else if (target->load_state == UNIT_MASKED) {
1711 log_emergency("Rescue target masked.");
1712 error_message = "Rescue target masked";
1713 goto finish;
1714 }
1715 }
1716
1717 assert(target->load_state == UNIT_LOADED);
1718
1719 if (arg_action == ACTION_TEST) {
1720 printf("-> By units:\n");
1721 manager_dump_units(m, stdout, "\t");
1722 }
1723
1724 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, false, &error, &default_unit_job);
1725 if (r == -EPERM) {
1726 log_debug("Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
1727
1728 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, &default_unit_job);
1729 if (r < 0) {
1730 log_emergency("Failed to start default target: %s", bus_error_message(&error, r));
1731 error_message = "Failed to start default target";
1732 goto finish;
1733 }
1734 } else if (r < 0) {
1735 log_emergency("Failed to isolate default target: %s", bus_error_message(&error, r));
1736 error_message = "Failed to isolate default target";
1737 goto finish;
1738 }
1739
1740 m->default_unit_job_id = default_unit_job->id;
1741
1742 after_startup = now(CLOCK_MONOTONIC);
1743 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
1744 "Loaded units and determined initial transaction in %s.",
1745 format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 100 * USEC_PER_MSEC));
1746
1747 if (arg_action == ACTION_TEST) {
1748 printf("-> By jobs:\n");
1749 manager_dump_jobs(m, stdout, "\t");
1750 retval = EXIT_SUCCESS;
1751 goto finish;
1752 }
1753 }
1754
1755 for (;;) {
1756 r = manager_loop(m);
1757 if (r < 0) {
1758 log_emergency_errno(r, "Failed to run main loop: %m");
1759 error_message = "Failed to run main loop";
1760 goto finish;
1761 }
1762
1763 switch (m->exit_code) {
1764
1765 case MANAGER_EXIT:
1766 retval = EXIT_SUCCESS;
1767 log_debug("Exit.");
1768 goto finish;
1769
1770 case MANAGER_RELOAD:
1771 log_info("Reloading.");
1772
1773 r = parse_config_file();
1774 if (r < 0)
1775 log_error("Failed to parse config file.");
1776
1777 manager_set_defaults(m);
1778
1779 r = manager_reload(m);
1780 if (r < 0)
1781 log_error_errno(r, "Failed to reload: %m");
1782 break;
1783
1784 case MANAGER_REEXECUTE:
1785
1786 if (prepare_reexecute(m, &arg_serialization, &fds, false) < 0) {
1787 error_message = "Failed to prepare for reexecution";
1788 goto finish;
1789 }
1790
1791 reexecute = true;
1792 log_notice("Reexecuting.");
1793 goto finish;
1794
1795 case MANAGER_SWITCH_ROOT:
1796 /* Steal the switch root parameters */
1797 switch_root_dir = m->switch_root;
1798 switch_root_init = m->switch_root_init;
1799 m->switch_root = m->switch_root_init = NULL;
1800
1801 if (!switch_root_init)
1802 if (prepare_reexecute(m, &arg_serialization, &fds, true) < 0) {
1803 error_message = "Failed to prepare for reexecution";
1804 goto finish;
1805 }
1806
1807 reexecute = true;
1808 log_notice("Switching root.");
1809 goto finish;
1810
1811 case MANAGER_REBOOT:
1812 case MANAGER_POWEROFF:
1813 case MANAGER_HALT:
1814 case MANAGER_KEXEC: {
1815 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1816 [MANAGER_REBOOT] = "reboot",
1817 [MANAGER_POWEROFF] = "poweroff",
1818 [MANAGER_HALT] = "halt",
1819 [MANAGER_KEXEC] = "kexec"
1820 };
1821
1822 assert_se(shutdown_verb = table[m->exit_code]);
1823 arm_reboot_watchdog = m->exit_code == MANAGER_REBOOT;
1824
1825 log_notice("Shutting down.");
1826 goto finish;
1827 }
1828
1829 default:
1830 assert_not_reached("Unknown exit code.");
1831 }
1832 }
1833
1834 finish:
1835 pager_close();
1836
1837 if (m)
1838 arg_shutdown_watchdog = m->shutdown_watchdog;
1839 m = manager_free(m);
1840
1841 for (j = 0; j < ELEMENTSOF(arg_default_rlimit); j++) {
1842 free(arg_default_rlimit[j]);
1843 arg_default_rlimit[j] = NULL;
1844 }
1845
1846 arg_default_unit = mfree(arg_default_unit);
1847
1848 free_join_controllers();
1849
1850 arg_default_environment = strv_free(arg_default_environment);
1851
1852 set_free(arg_syscall_archs);
1853 arg_syscall_archs = NULL;
1854
1855 mac_selinux_finish();
1856
1857 if (reexecute) {
1858 const char **args;
1859 unsigned i, args_size;
1860
1861 /* Close and disarm the watchdog, so that the new
1862 * instance can reinitialize it, but doesn't get
1863 * rebooted while we do that */
1864 watchdog_close(true);
1865
1866 /* Reset the RLIMIT_NOFILE to the kernel default, so
1867 * that the new systemd can pass the kernel default to
1868 * its child processes */
1869 if (saved_rlimit_nofile.rlim_cur > 0)
1870 setrlimit(RLIMIT_NOFILE, &saved_rlimit_nofile);
1871
1872 if (switch_root_dir) {
1873 /* Kill all remaining processes from the
1874 * initrd, but don't wait for them, so that we
1875 * can handle the SIGCHLD for them after
1876 * deserializing. */
1877 broadcast_signal(SIGTERM, false, true);
1878
1879 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1880 r = switch_root(switch_root_dir, "/mnt", true, MS_MOVE);
1881 if (r < 0)
1882 log_error_errno(r, "Failed to switch root, trying to continue: %m");
1883 }
1884
1885 args_size = MAX(6, argc+1);
1886 args = newa(const char*, args_size);
1887
1888 if (!switch_root_init) {
1889 char sfd[DECIMAL_STR_MAX(int) + 1];
1890
1891 /* First try to spawn ourselves with the right
1892 * path, and with full serialization. We do
1893 * this only if the user didn't specify an
1894 * explicit init to spawn. */
1895
1896 assert(arg_serialization);
1897 assert(fds);
1898
1899 xsprintf(sfd, "%i", fileno(arg_serialization));
1900
1901 i = 0;
1902 args[i++] = SYSTEMD_BINARY_PATH;
1903 if (switch_root_dir)
1904 args[i++] = "--switched-root";
1905 args[i++] = arg_running_as == MANAGER_SYSTEM ? "--system" : "--user";
1906 args[i++] = "--deserialize";
1907 args[i++] = sfd;
1908 args[i++] = NULL;
1909
1910 /* do not pass along the environment we inherit from the kernel or initrd */
1911 if (switch_root_dir)
1912 clearenv();
1913
1914 assert(i <= args_size);
1915 execv(args[0], (char* const*) args);
1916 }
1917
1918 /* Try the fallback, if there is any, without any
1919 * serialization. We pass the original argv[] and
1920 * envp[]. (Well, modulo the ordering changes due to
1921 * getopt() in argv[], and some cleanups in envp[],
1922 * but let's hope that doesn't matter.) */
1923
1924 if (arg_serialization) {
1925 fclose(arg_serialization);
1926 arg_serialization = NULL;
1927 }
1928
1929 if (fds) {
1930 fdset_free(fds);
1931 fds = NULL;
1932 }
1933
1934 /* Reopen the console */
1935 make_console_stdio();
1936
1937 for (j = 1, i = 1; j < (unsigned) argc; j++)
1938 args[i++] = argv[j];
1939 args[i++] = NULL;
1940 assert(i <= args_size);
1941
1942 /* Reenable any blocked signals, especially important
1943 * if we switch from initial ramdisk to init=... */
1944 (void) reset_all_signal_handlers();
1945 (void) reset_signal_mask();
1946
1947 if (switch_root_init) {
1948 args[0] = switch_root_init;
1949 execv(args[0], (char* const*) args);
1950 log_warning_errno(errno, "Failed to execute configured init, trying fallback: %m");
1951 }
1952
1953 args[0] = "/sbin/init";
1954 execv(args[0], (char* const*) args);
1955
1956 if (errno == ENOENT) {
1957 log_warning("No /sbin/init, trying fallback");
1958
1959 args[0] = "/bin/sh";
1960 args[1] = NULL;
1961 execv(args[0], (char* const*) args);
1962 log_error_errno(errno, "Failed to execute /bin/sh, giving up: %m");
1963 } else
1964 log_warning_errno(errno, "Failed to execute /sbin/init, giving up: %m");
1965 }
1966
1967 if (arg_serialization) {
1968 fclose(arg_serialization);
1969 arg_serialization = NULL;
1970 }
1971
1972 if (fds) {
1973 fdset_free(fds);
1974 fds = NULL;
1975 }
1976
1977 #ifdef HAVE_VALGRIND_VALGRIND_H
1978 /* If we are PID 1 and running under valgrind, then let's exit
1979 * here explicitly. valgrind will only generate nice output on
1980 * exit(), not on exec(), hence let's do the former not the
1981 * latter here. */
1982 if (getpid() == 1 && RUNNING_ON_VALGRIND)
1983 return 0;
1984 #endif
1985
1986 if (shutdown_verb) {
1987 char log_level[DECIMAL_STR_MAX(int) + 1];
1988 const char* command_line[9] = {
1989 SYSTEMD_SHUTDOWN_BINARY_PATH,
1990 shutdown_verb,
1991 "--log-level", log_level,
1992 "--log-target",
1993 };
1994 unsigned pos = 5;
1995 _cleanup_strv_free_ char **env_block = NULL;
1996
1997 assert(command_line[pos] == NULL);
1998 env_block = strv_copy(environ);
1999
2000 xsprintf(log_level, "%d", log_get_max_level());
2001
2002 switch (log_get_target()) {
2003 case LOG_TARGET_KMSG:
2004 case LOG_TARGET_JOURNAL_OR_KMSG:
2005 case LOG_TARGET_SYSLOG_OR_KMSG:
2006 command_line[pos++] = "kmsg";
2007 break;
2008
2009 case LOG_TARGET_NULL:
2010 command_line[pos++] = "null";
2011 break;
2012
2013 case LOG_TARGET_CONSOLE:
2014 default:
2015 command_line[pos++] = "console";
2016 break;
2017 };
2018
2019 if (log_get_show_color())
2020 command_line[pos++] = "--log-color";
2021
2022 if (log_get_show_location())
2023 command_line[pos++] = "--log-location";
2024
2025 assert(pos < ELEMENTSOF(command_line));
2026
2027 if (arm_reboot_watchdog && arg_shutdown_watchdog > 0) {
2028 char *e;
2029
2030 /* If we reboot let's set the shutdown
2031 * watchdog and tell the shutdown binary to
2032 * repeatedly ping it */
2033 r = watchdog_set_timeout(&arg_shutdown_watchdog);
2034 watchdog_close(r < 0);
2035
2036 /* Tell the binary how often to ping, ignore failure */
2037 if (asprintf(&e, "WATCHDOG_USEC="USEC_FMT, arg_shutdown_watchdog) > 0)
2038 strv_push(&env_block, e);
2039 } else
2040 watchdog_close(true);
2041
2042 /* Avoid the creation of new processes forked by the
2043 * kernel; at this point, we will not listen to the
2044 * signals anyway */
2045 if (detect_container(NULL) <= 0)
2046 cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
2047
2048 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
2049 log_error_errno(errno, "Failed to execute shutdown binary, %s: %m",
2050 getpid() == 1 ? "freezing" : "quitting");
2051 }
2052
2053 if (getpid() == 1) {
2054 if (error_message)
2055 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
2056 ANSI_HIGHLIGHT_RED_ON "!!!!!!" ANSI_HIGHLIGHT_OFF,
2057 "%s, freezing.", error_message);
2058 freeze();
2059 }
2060
2061 return retval;
2062 }
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