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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 int parse_argv(int argc, char *argv[]) {
689
690 enum {
691 ARG_LOG_LEVEL = 0x100,
692 ARG_LOG_TARGET,
693 ARG_LOG_COLOR,
694 ARG_LOG_LOCATION,
695 ARG_UNIT,
696 ARG_SYSTEM,
697 ARG_USER,
698 ARG_TEST,
699 ARG_NO_PAGER,
700 ARG_VERSION,
701 ARG_DUMP_CONFIGURATION_ITEMS,
702 ARG_DUMP_CORE,
703 ARG_CRASH_SHELL,
704 ARG_CONFIRM_SPAWN,
705 ARG_SHOW_STATUS,
706 ARG_DESERIALIZE,
707 ARG_SWITCHED_ROOT,
708 ARG_DEFAULT_STD_OUTPUT,
709 ARG_DEFAULT_STD_ERROR
710 };
711
712 static const struct option options[] = {
713 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
714 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
715 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
716 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
717 { "unit", required_argument, NULL, ARG_UNIT },
718 { "system", no_argument, NULL, ARG_SYSTEM },
719 { "user", no_argument, NULL, ARG_USER },
720 { "test", no_argument, NULL, ARG_TEST },
721 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
722 { "help", no_argument, NULL, 'h' },
723 { "version", no_argument, NULL, ARG_VERSION },
724 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
725 { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
726 { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
727 { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
728 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
729 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
730 { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
731 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
732 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
733 {}
734 };
735
736 int c, r;
737
738 assert(argc >= 1);
739 assert(argv);
740
741 if (getpid() == 1)
742 opterr = 0;
743
744 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
745
746 switch (c) {
747
748 case ARG_LOG_LEVEL:
749 r = log_set_max_level_from_string(optarg);
750 if (r < 0) {
751 log_error("Failed to parse log level %s.", optarg);
752 return r;
753 }
754
755 break;
756
757 case ARG_LOG_TARGET:
758 r = log_set_target_from_string(optarg);
759 if (r < 0) {
760 log_error("Failed to parse log target %s.", optarg);
761 return r;
762 }
763
764 break;
765
766 case ARG_LOG_COLOR:
767
768 if (optarg) {
769 r = log_show_color_from_string(optarg);
770 if (r < 0) {
771 log_error("Failed to parse log color setting %s.", optarg);
772 return r;
773 }
774 } else
775 log_show_color(true);
776
777 break;
778
779 case ARG_LOG_LOCATION:
780 if (optarg) {
781 r = log_show_location_from_string(optarg);
782 if (r < 0) {
783 log_error("Failed to parse log location setting %s.", optarg);
784 return r;
785 }
786 } else
787 log_show_location(true);
788
789 break;
790
791 case ARG_DEFAULT_STD_OUTPUT:
792 r = exec_output_from_string(optarg);
793 if (r < 0) {
794 log_error("Failed to parse default standard output setting %s.", optarg);
795 return r;
796 } else
797 arg_default_std_output = r;
798 break;
799
800 case ARG_DEFAULT_STD_ERROR:
801 r = exec_output_from_string(optarg);
802 if (r < 0) {
803 log_error("Failed to parse default standard error output setting %s.", optarg);
804 return r;
805 } else
806 arg_default_std_error = r;
807 break;
808
809 case ARG_UNIT:
810
811 r = set_default_unit(optarg);
812 if (r < 0)
813 return log_error_errno(r, "Failed to set default unit %s: %m", optarg);
814
815 break;
816
817 case ARG_SYSTEM:
818 arg_running_as = MANAGER_SYSTEM;
819 break;
820
821 case ARG_USER:
822 arg_running_as = MANAGER_USER;
823 break;
824
825 case ARG_TEST:
826 arg_action = ACTION_TEST;
827 if (arg_no_pager < 0)
828 arg_no_pager = true;
829 break;
830
831 case ARG_NO_PAGER:
832 arg_no_pager = true;
833 break;
834
835 case ARG_VERSION:
836 arg_action = ACTION_VERSION;
837 break;
838
839 case ARG_DUMP_CONFIGURATION_ITEMS:
840 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
841 break;
842
843 case ARG_DUMP_CORE:
844 r = optarg ? parse_boolean(optarg) : 1;
845 if (r < 0) {
846 log_error("Failed to parse dump core boolean %s.", optarg);
847 return r;
848 }
849 arg_dump_core = r;
850 break;
851
852 case ARG_CRASH_SHELL:
853 r = optarg ? parse_boolean(optarg) : 1;
854 if (r < 0) {
855 log_error("Failed to parse crash shell boolean %s.", optarg);
856 return r;
857 }
858 arg_crash_shell = r;
859 break;
860
861 case ARG_CONFIRM_SPAWN:
862 r = optarg ? parse_boolean(optarg) : 1;
863 if (r < 0) {
864 log_error("Failed to parse confirm spawn boolean %s.", optarg);
865 return r;
866 }
867 arg_confirm_spawn = r;
868 break;
869
870 case ARG_SHOW_STATUS:
871 if (optarg) {
872 r = parse_show_status(optarg, &arg_show_status);
873 if (r < 0) {
874 log_error("Failed to parse show status boolean %s.", optarg);
875 return r;
876 }
877 } else
878 arg_show_status = SHOW_STATUS_YES;
879 break;
880
881 case ARG_DESERIALIZE: {
882 int fd;
883 FILE *f;
884
885 r = safe_atoi(optarg, &fd);
886 if (r < 0 || fd < 0) {
887 log_error("Failed to parse deserialize option %s.", optarg);
888 return r < 0 ? r : -EINVAL;
889 }
890
891 fd_cloexec(fd, true);
892
893 f = fdopen(fd, "r");
894 if (!f)
895 return log_error_errno(errno, "Failed to open serialization fd: %m");
896
897 if (arg_serialization)
898 fclose(arg_serialization);
899
900 arg_serialization = f;
901
902 break;
903 }
904
905 case ARG_SWITCHED_ROOT:
906 arg_switched_root = true;
907 break;
908
909 case 'h':
910 arg_action = ACTION_HELP;
911 if (arg_no_pager < 0)
912 arg_no_pager = true;
913 break;
914
915 case 'D':
916 log_set_max_level(LOG_DEBUG);
917 break;
918
919 case 'b':
920 case 's':
921 case 'z':
922 /* Just to eat away the sysvinit kernel
923 * cmdline args without getopt() error
924 * messages that we'll parse in
925 * parse_proc_cmdline_word() or ignore. */
926
927 case '?':
928 if (getpid() != 1)
929 return -EINVAL;
930 else
931 return 0;
932
933 default:
934 assert_not_reached("Unhandled option code.");
935 }
936
937 if (optind < argc && getpid() != 1) {
938 /* Hmm, when we aren't run as init system
939 * let's complain about excess arguments */
940
941 log_error("Excess arguments.");
942 return -EINVAL;
943 }
944
945 return 0;
946 }
947
948 static int help(void) {
949
950 printf("%s [OPTIONS...]\n\n"
951 "Starts up and maintains the system or user services.\n\n"
952 " -h --help Show this help\n"
953 " --test Determine startup sequence, dump it and exit\n"
954 " --no-pager Do not pipe output into a pager\n"
955 " --dump-configuration-items Dump understood unit configuration items\n"
956 " --unit=UNIT Set default unit\n"
957 " --system Run a system instance, even if PID != 1\n"
958 " --user Run a user instance\n"
959 " --dump-core[=0|1] Dump core on crash\n"
960 " --crash-shell[=0|1] Run shell on crash\n"
961 " --confirm-spawn[=0|1] Ask for confirmation when spawning processes\n"
962 " --show-status[=0|1] Show status updates on the console during bootup\n"
963 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
964 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
965 " --log-color[=0|1] Highlight important log messages\n"
966 " --log-location[=0|1] Include code location in log messages\n"
967 " --default-standard-output= Set default standard output for services\n"
968 " --default-standard-error= Set default standard error output for services\n",
969 program_invocation_short_name);
970
971 return 0;
972 }
973
974 static int version(void) {
975 puts(PACKAGE_STRING);
976 puts(SYSTEMD_FEATURES);
977
978 return 0;
979 }
980
981 static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) {
982 FILE *f = NULL;
983 FDSet *fds = NULL;
984 int r;
985
986 assert(m);
987 assert(_f);
988 assert(_fds);
989
990 r = manager_open_serialization(m, &f);
991 if (r < 0) {
992 log_error_errno(r, "Failed to create serialization file: %m");
993 goto fail;
994 }
995
996 /* Make sure nothing is really destructed when we shut down */
997 m->n_reloading ++;
998 bus_manager_send_reloading(m, true);
999
1000 fds = fdset_new();
1001 if (!fds) {
1002 r = -ENOMEM;
1003 log_error_errno(r, "Failed to allocate fd set: %m");
1004 goto fail;
1005 }
1006
1007 r = manager_serialize(m, f, fds, switching_root);
1008 if (r < 0) {
1009 log_error_errno(r, "Failed to serialize state: %m");
1010 goto fail;
1011 }
1012
1013 if (fseeko(f, 0, SEEK_SET) < 0) {
1014 log_error_errno(errno, "Failed to rewind serialization fd: %m");
1015 goto fail;
1016 }
1017
1018 r = fd_cloexec(fileno(f), false);
1019 if (r < 0) {
1020 log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m");
1021 goto fail;
1022 }
1023
1024 r = fdset_cloexec(fds, false);
1025 if (r < 0) {
1026 log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m");
1027 goto fail;
1028 }
1029
1030 *_f = f;
1031 *_fds = fds;
1032
1033 return 0;
1034
1035 fail:
1036 fdset_free(fds);
1037
1038 if (f)
1039 fclose(f);
1040
1041 return r;
1042 }
1043
1044 static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
1045 struct rlimit nl;
1046 int r;
1047
1048 assert(saved_rlimit);
1049
1050 /* Save the original RLIMIT_NOFILE so that we can reset it
1051 * later when transitioning from the initrd to the main
1052 * systemd or suchlike. */
1053 if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0)
1054 return log_error_errno(errno, "Reading RLIMIT_NOFILE failed: %m");
1055
1056 /* Make sure forked processes get the default kernel setting */
1057 if (!arg_default_rlimit[RLIMIT_NOFILE]) {
1058 struct rlimit *rl;
1059
1060 rl = newdup(struct rlimit, saved_rlimit, 1);
1061 if (!rl)
1062 return log_oom();
1063
1064 arg_default_rlimit[RLIMIT_NOFILE] = rl;
1065 }
1066
1067 /* Bump up the resource limit for ourselves substantially */
1068 nl.rlim_cur = nl.rlim_max = 64*1024;
1069 r = setrlimit_closest(RLIMIT_NOFILE, &nl);
1070 if (r < 0)
1071 return log_error_errno(r, "Setting RLIMIT_NOFILE failed: %m");
1072
1073 return 0;
1074 }
1075
1076 static void test_mtab(void) {
1077
1078 static const char ok[] =
1079 "/proc/self/mounts\0"
1080 "/proc/mounts\0"
1081 "../proc/self/mounts\0"
1082 "../proc/mounts\0";
1083
1084 _cleanup_free_ char *p = NULL;
1085 int r;
1086
1087 /* Check that /etc/mtab is a symlink to the right place or
1088 * non-existing. But certainly not a file, or a symlink to
1089 * some weird place... */
1090
1091 r = readlink_malloc("/etc/mtab", &p);
1092 if (r == -ENOENT)
1093 return;
1094 if (r >= 0 && nulstr_contains(ok, p))
1095 return;
1096
1097 log_warning("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
1098 "This is not supported anymore. "
1099 "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
1100 }
1101
1102 static void test_usr(void) {
1103
1104 /* Check that /usr is not a separate fs */
1105
1106 if (dir_is_empty("/usr") <= 0)
1107 return;
1108
1109 log_warning("/usr appears to be on its own filesystem and is not already mounted. This is not a supported setup. "
1110 "Some things will probably break (sometimes even silently) in mysterious ways. "
1111 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1112 }
1113
1114 static int initialize_join_controllers(void) {
1115 /* By default, mount "cpu" + "cpuacct" together, and "net_cls"
1116 * + "net_prio". We'd like to add "cpuset" to the mix, but
1117 * "cpuset" doesn't really work for groups with no initialized
1118 * attributes. */
1119
1120 arg_join_controllers = new(char**, 3);
1121 if (!arg_join_controllers)
1122 return -ENOMEM;
1123
1124 arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL);
1125 arg_join_controllers[1] = strv_new("net_cls", "net_prio", NULL);
1126 arg_join_controllers[2] = NULL;
1127
1128 if (!arg_join_controllers[0] || !arg_join_controllers[1]) {
1129 free_join_controllers();
1130 return -ENOMEM;
1131 }
1132
1133 return 0;
1134 }
1135
1136 static int enforce_syscall_archs(Set *archs) {
1137 #ifdef HAVE_SECCOMP
1138 scmp_filter_ctx *seccomp;
1139 Iterator i;
1140 void *id;
1141 int r;
1142
1143 seccomp = seccomp_init(SCMP_ACT_ALLOW);
1144 if (!seccomp)
1145 return log_oom();
1146
1147 SET_FOREACH(id, arg_syscall_archs, i) {
1148 r = seccomp_arch_add(seccomp, PTR_TO_UINT32(id) - 1);
1149 if (r == -EEXIST)
1150 continue;
1151 if (r < 0) {
1152 log_error_errno(r, "Failed to add architecture to seccomp: %m");
1153 goto finish;
1154 }
1155 }
1156
1157 r = seccomp_attr_set(seccomp, SCMP_FLTATR_CTL_NNP, 0);
1158 if (r < 0) {
1159 log_error_errno(r, "Failed to unset NO_NEW_PRIVS: %m");
1160 goto finish;
1161 }
1162
1163 r = seccomp_load(seccomp);
1164 if (r < 0)
1165 log_error_errno(r, "Failed to add install architecture seccomp: %m");
1166
1167 finish:
1168 seccomp_release(seccomp);
1169 return r;
1170 #else
1171 return 0;
1172 #endif
1173 }
1174
1175 static int status_welcome(void) {
1176 _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
1177 int r;
1178
1179 r = parse_env_file("/etc/os-release", NEWLINE,
1180 "PRETTY_NAME", &pretty_name,
1181 "ANSI_COLOR", &ansi_color,
1182 NULL);
1183 if (r == -ENOENT) {
1184 r = parse_env_file("/usr/lib/os-release", NEWLINE,
1185 "PRETTY_NAME", &pretty_name,
1186 "ANSI_COLOR", &ansi_color,
1187 NULL);
1188 }
1189
1190 if (r < 0 && r != -ENOENT)
1191 log_warning_errno(r, "Failed to read os-release file: %m");
1192
1193 return status_printf(NULL, false, false,
1194 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1195 isempty(ansi_color) ? "1" : ansi_color,
1196 isempty(pretty_name) ? "Linux" : pretty_name);
1197 }
1198
1199 static int write_container_id(void) {
1200 const char *c;
1201
1202 c = getenv("container");
1203 if (isempty(c))
1204 return 0;
1205
1206 return write_string_file("/run/systemd/container", c, WRITE_STRING_FILE_CREATE);
1207 }
1208
1209 int main(int argc, char *argv[]) {
1210 Manager *m = NULL;
1211 int r, retval = EXIT_FAILURE;
1212 usec_t before_startup, after_startup;
1213 char timespan[FORMAT_TIMESPAN_MAX];
1214 FDSet *fds = NULL;
1215 bool reexecute = false;
1216 const char *shutdown_verb = NULL;
1217 dual_timestamp initrd_timestamp = DUAL_TIMESTAMP_NULL;
1218 dual_timestamp userspace_timestamp = DUAL_TIMESTAMP_NULL;
1219 dual_timestamp kernel_timestamp = DUAL_TIMESTAMP_NULL;
1220 dual_timestamp security_start_timestamp = DUAL_TIMESTAMP_NULL;
1221 dual_timestamp security_finish_timestamp = DUAL_TIMESTAMP_NULL;
1222 static char systemd[] = "systemd";
1223 bool skip_setup = false;
1224 unsigned j;
1225 bool loaded_policy = false;
1226 bool arm_reboot_watchdog = false;
1227 bool queue_default_job = false;
1228 bool empty_etc = false;
1229 char *switch_root_dir = NULL, *switch_root_init = NULL;
1230 struct rlimit saved_rlimit_nofile = RLIMIT_MAKE_CONST(0);
1231 const char *error_message = NULL;
1232
1233 #ifdef HAVE_SYSV_COMPAT
1234 if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
1235 /* This is compatibility support for SysV, where
1236 * calling init as a user is identical to telinit. */
1237
1238 errno = -ENOENT;
1239 execv(SYSTEMCTL_BINARY_PATH, argv);
1240 log_error_errno(errno, "Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
1241 return 1;
1242 }
1243 #endif
1244
1245 dual_timestamp_from_monotonic(&kernel_timestamp, 0);
1246 dual_timestamp_get(&userspace_timestamp);
1247
1248 /* Determine if this is a reexecution or normal bootup. We do
1249 * the full command line parsing much later, so let's just
1250 * have a quick peek here. */
1251 if (strv_find(argv+1, "--deserialize"))
1252 skip_setup = true;
1253
1254 /* If we have switched root, do all the special setup
1255 * things */
1256 if (strv_find(argv+1, "--switched-root"))
1257 skip_setup = false;
1258
1259 /* If we get started via the /sbin/init symlink then we are
1260 called 'init'. After a subsequent reexecution we are then
1261 called 'systemd'. That is confusing, hence let's call us
1262 systemd right-away. */
1263 program_invocation_short_name = systemd;
1264 prctl(PR_SET_NAME, systemd);
1265
1266 saved_argv = argv;
1267 saved_argc = argc;
1268
1269 log_show_color(isatty(STDERR_FILENO) > 0);
1270 log_set_upgrade_syslog_to_journal(true);
1271
1272 /* Disable the umask logic */
1273 if (getpid() == 1)
1274 umask(0);
1275
1276 if (getpid() == 1 && detect_container(NULL) <= 0) {
1277
1278 /* Running outside of a container as PID 1 */
1279 arg_running_as = MANAGER_SYSTEM;
1280 make_null_stdio();
1281 log_set_target(LOG_TARGET_KMSG);
1282 log_open();
1283
1284 if (in_initrd())
1285 initrd_timestamp = userspace_timestamp;
1286
1287 if (!skip_setup) {
1288 mount_setup_early();
1289 dual_timestamp_get(&security_start_timestamp);
1290 if (mac_selinux_setup(&loaded_policy) < 0) {
1291 error_message = "Failed to load SELinux policy";
1292 goto finish;
1293 } else if (ima_setup() < 0) {
1294 error_message = "Failed to load IMA policy";
1295 goto finish;
1296 } else if (mac_smack_setup(&loaded_policy) < 0) {
1297 error_message = "Failed to load SMACK policy";
1298 goto finish;
1299 }
1300 dual_timestamp_get(&security_finish_timestamp);
1301 }
1302
1303 if (mac_selinux_init(NULL) < 0) {
1304 error_message = "Failed to initialize SELinux policy";
1305 goto finish;
1306 }
1307
1308 if (!skip_setup) {
1309 if (clock_is_localtime() > 0) {
1310 int min;
1311
1312 /*
1313 * The very first call of settimeofday() also does a time warp in the kernel.
1314 *
1315 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on
1316 * external tools to take care of maintaining the RTC and do all adjustments.
1317 * This matches the behavior of Windows, which leaves the RTC alone if the
1318 * registry tells that the RTC runs in UTC.
1319 */
1320 r = clock_set_timezone(&min);
1321 if (r < 0)
1322 log_error_errno(r, "Failed to apply local time delta, ignoring: %m");
1323 else
1324 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
1325 } else if (!in_initrd()) {
1326 /*
1327 * Do a dummy very first call to seal the kernel's time warp magic.
1328 *
1329 * Do not call this this from inside the initrd. The initrd might not
1330 * carry /etc/adjtime with LOCAL, but the real system could be set up
1331 * that way. In such case, we need to delay the time-warp or the sealing
1332 * until we reach the real system.
1333 *
1334 * Do no set the kernel's timezone. The concept of local time cannot
1335 * be supported reliably, the time will jump or be incorrect at every daylight
1336 * saving time change. All kernel local time concepts will be treated
1337 * as UTC that way.
1338 */
1339 clock_reset_timewarp();
1340 }
1341 }
1342
1343 /* Set the default for later on, but don't actually
1344 * open the logs like this for now. Note that if we
1345 * are transitioning from the initrd there might still
1346 * be journal fd open, and we shouldn't attempt
1347 * opening that before we parsed /proc/cmdline which
1348 * might redirect output elsewhere. */
1349 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1350
1351 } else if (getpid() == 1) {
1352 /* Running inside a container, as PID 1 */
1353 arg_running_as = MANAGER_SYSTEM;
1354 log_set_target(LOG_TARGET_CONSOLE);
1355 log_close_console(); /* force reopen of /dev/console */
1356 log_open();
1357
1358 /* For the later on, see above... */
1359 log_set_target(LOG_TARGET_JOURNAL);
1360
1361 /* clear the kernel timestamp,
1362 * because we are in a container */
1363 kernel_timestamp.monotonic = 0ULL;
1364 kernel_timestamp.realtime = 0ULL;
1365
1366 } else {
1367 /* Running as user instance */
1368 arg_running_as = MANAGER_USER;
1369 log_set_target(LOG_TARGET_AUTO);
1370 log_open();
1371
1372 /* clear the kernel timestamp,
1373 * because we are not PID 1 */
1374 kernel_timestamp.monotonic = 0ULL;
1375 kernel_timestamp.realtime = 0ULL;
1376 }
1377
1378 /* Initialize default unit */
1379 r = set_default_unit(SPECIAL_DEFAULT_TARGET);
1380 if (r < 0) {
1381 log_emergency_errno(r, "Failed to set default unit %s: %m", SPECIAL_DEFAULT_TARGET);
1382 error_message = "Failed to set default unit";
1383 goto finish;
1384 }
1385
1386 r = initialize_join_controllers();
1387 if (r < 0) {
1388 error_message = "Failed to initialize cgroup controllers";
1389 goto finish;
1390 }
1391
1392 /* Mount /proc, /sys and friends, so that /proc/cmdline and
1393 * /proc/$PID/fd is available. */
1394 if (getpid() == 1) {
1395
1396 /* Load the kernel modules early, so that we kdbus.ko is loaded before kdbusfs shall be mounted */
1397 if (!skip_setup)
1398 kmod_setup();
1399
1400 r = mount_setup(loaded_policy);
1401 if (r < 0) {
1402 error_message = "Failed to mount API filesystems";
1403 goto finish;
1404 }
1405 }
1406
1407 /* Reset all signal handlers. */
1408 (void) reset_all_signal_handlers();
1409 (void) ignore_signals(SIGNALS_IGNORE, -1);
1410
1411 if (parse_config_file() < 0) {
1412 error_message = "Failed to parse config file";
1413 goto finish;
1414 }
1415
1416 if (arg_running_as == MANAGER_SYSTEM) {
1417 r = parse_proc_cmdline(parse_proc_cmdline_item);
1418 if (r < 0)
1419 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
1420 }
1421
1422 /* Note that this also parses bits from the kernel command
1423 * line, including "debug". */
1424 log_parse_environment();
1425
1426 if (parse_argv(argc, argv) < 0) {
1427 error_message = "Failed to parse commandline arguments";
1428 goto finish;
1429 }
1430
1431 if (arg_action == ACTION_TEST &&
1432 geteuid() == 0) {
1433 log_error("Don't run test mode as root.");
1434 goto finish;
1435 }
1436
1437 if (arg_running_as == MANAGER_USER &&
1438 arg_action == ACTION_RUN &&
1439 sd_booted() <= 0) {
1440 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
1441 goto finish;
1442 }
1443
1444 if (arg_running_as == MANAGER_SYSTEM &&
1445 arg_action == ACTION_RUN &&
1446 running_in_chroot() > 0) {
1447 log_error("Cannot be run in a chroot() environment.");
1448 goto finish;
1449 }
1450
1451 if (arg_action == ACTION_TEST)
1452 skip_setup = true;
1453
1454 pager_open_if_enabled();
1455
1456 if (arg_action == ACTION_HELP) {
1457 retval = help();
1458 goto finish;
1459 } else if (arg_action == ACTION_VERSION) {
1460 retval = version();
1461 goto finish;
1462 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
1463 unit_dump_config_items(stdout);
1464 retval = EXIT_SUCCESS;
1465 goto finish;
1466 } else if (arg_action == ACTION_DONE) {
1467 retval = EXIT_SUCCESS;
1468 goto finish;
1469 }
1470
1471 if (arg_running_as == MANAGER_USER &&
1472 !getenv("XDG_RUNTIME_DIR")) {
1473 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
1474 goto finish;
1475 }
1476
1477 assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST);
1478
1479 /* Close logging fds, in order not to confuse fdset below */
1480 log_close();
1481
1482 /* Remember open file descriptors for later deserialization */
1483 r = fdset_new_fill(&fds);
1484 if (r < 0) {
1485 log_emergency_errno(r, "Failed to allocate fd set: %m");
1486 error_message = "Failed to allocate fd set";
1487 goto finish;
1488 } else
1489 fdset_cloexec(fds, true);
1490
1491 if (arg_serialization)
1492 assert_se(fdset_remove(fds, fileno(arg_serialization)) >= 0);
1493
1494 if (arg_running_as == MANAGER_SYSTEM)
1495 /* Become a session leader if we aren't one yet. */
1496 setsid();
1497
1498 /* Move out of the way, so that we won't block unmounts */
1499 assert_se(chdir("/") == 0);
1500
1501 /* Reset the console, but only if this is really init and we
1502 * are freshly booted */
1503 if (arg_running_as == MANAGER_SYSTEM && arg_action == ACTION_RUN) {
1504
1505 /* If we are init, we connect stdin/stdout/stderr to
1506 * /dev/null and make sure we don't have a controlling
1507 * tty. */
1508 release_terminal();
1509
1510 if (getpid() == 1 && !skip_setup)
1511 console_setup();
1512 }
1513
1514 /* Open the logging devices, if possible and necessary */
1515 log_open();
1516
1517 if (arg_show_status == _SHOW_STATUS_UNSET)
1518 arg_show_status = SHOW_STATUS_YES;
1519
1520 /* Make sure we leave a core dump without panicing the
1521 * kernel. */
1522 if (getpid() == 1) {
1523 install_crash_handler();
1524
1525 r = mount_cgroup_controllers(arg_join_controllers);
1526 if (r < 0)
1527 goto finish;
1528 }
1529
1530 if (arg_running_as == MANAGER_SYSTEM) {
1531 const char *virtualization = NULL;
1532
1533 log_info(PACKAGE_STRING " running in %ssystem mode. (" SYSTEMD_FEATURES ")",
1534 arg_action == ACTION_TEST ? "test " : "" );
1535
1536 detect_virtualization(&virtualization);
1537 if (virtualization)
1538 log_info("Detected virtualization %s.", virtualization);
1539
1540 write_container_id();
1541
1542 log_info("Detected architecture %s.", architecture_to_string(uname_architecture()));
1543
1544 if (in_initrd())
1545 log_info("Running in initial RAM disk.");
1546
1547 /* Let's check whether /etc is already populated. We
1548 * don't actually really check for that, but use
1549 * /etc/machine-id as flag file. This allows container
1550 * managers and installers to provision a couple of
1551 * files already. If the container manager wants to
1552 * provision the machine ID itself it should pass
1553 * $container_uuid to PID 1. */
1554
1555 empty_etc = access("/etc/machine-id", F_OK) < 0;
1556 if (empty_etc)
1557 log_info("Running with unpopulated /etc.");
1558 } else {
1559 _cleanup_free_ char *t;
1560
1561 t = uid_to_name(getuid());
1562 log_debug(PACKAGE_STRING " running in %suser mode for user "UID_FMT"/%s. (" SYSTEMD_FEATURES ")",
1563 arg_action == ACTION_TEST ? " test" : "", getuid(), t);
1564 }
1565
1566 if (arg_running_as == MANAGER_SYSTEM && !skip_setup) {
1567 if (arg_show_status > 0)
1568 status_welcome();
1569
1570 hostname_setup();
1571 machine_id_setup(NULL);
1572 loopback_setup();
1573
1574 test_mtab();
1575 test_usr();
1576 }
1577
1578 if (arg_running_as == MANAGER_SYSTEM && arg_runtime_watchdog > 0)
1579 watchdog_set_timeout(&arg_runtime_watchdog);
1580
1581 if (arg_timer_slack_nsec != NSEC_INFINITY)
1582 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
1583 log_error_errno(errno, "Failed to adjust timer slack: %m");
1584
1585 if (arg_capability_bounding_set_drop) {
1586 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop);
1587 if (r < 0) {
1588 log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m");
1589 error_message = "Failed to drop capability bounding set of usermode helpers";
1590 goto finish;
1591 }
1592 r = capability_bounding_set_drop(arg_capability_bounding_set_drop, true);
1593 if (r < 0) {
1594 log_emergency_errno(r, "Failed to drop capability bounding set: %m");
1595 error_message = "Failed to drop capability bounding set";
1596 goto finish;
1597 }
1598 }
1599
1600 if (arg_syscall_archs) {
1601 r = enforce_syscall_archs(arg_syscall_archs);
1602 if (r < 0) {
1603 error_message = "Failed to set syscall architectures";
1604 goto finish;
1605 }
1606 }
1607
1608 if (arg_running_as == MANAGER_USER)
1609 /* Become reaper of our children */
1610 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0)
1611 log_warning_errno(errno, "Failed to make us a subreaper: %m");
1612
1613 if (arg_running_as == MANAGER_SYSTEM) {
1614 bump_rlimit_nofile(&saved_rlimit_nofile);
1615
1616 if (empty_etc) {
1617 r = unit_file_preset_all(UNIT_FILE_SYSTEM, false, NULL, UNIT_FILE_PRESET_ENABLE_ONLY, false, NULL, 0);
1618 if (r < 0)
1619 log_warning_errno(r, "Failed to populate /etc with preset unit settings, ignoring: %m");
1620 else
1621 log_info("Populated /etc with preset unit settings.");
1622 }
1623 }
1624
1625 r = manager_new(arg_running_as, arg_action == ACTION_TEST, &m);
1626 if (r < 0) {
1627 log_emergency_errno(r, "Failed to allocate manager object: %m");
1628 error_message = "Failed to allocate manager object";
1629 goto finish;
1630 }
1631
1632 m->confirm_spawn = arg_confirm_spawn;
1633 m->default_timer_accuracy_usec = arg_default_timer_accuracy_usec;
1634 m->default_std_output = arg_default_std_output;
1635 m->default_std_error = arg_default_std_error;
1636 m->default_restart_usec = arg_default_restart_usec;
1637 m->default_timeout_start_usec = arg_default_timeout_start_usec;
1638 m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
1639 m->default_start_limit_interval = arg_default_start_limit_interval;
1640 m->default_start_limit_burst = arg_default_start_limit_burst;
1641 m->default_cpu_accounting = arg_default_cpu_accounting;
1642 m->default_blockio_accounting = arg_default_blockio_accounting;
1643 m->default_memory_accounting = arg_default_memory_accounting;
1644 m->runtime_watchdog = arg_runtime_watchdog;
1645 m->shutdown_watchdog = arg_shutdown_watchdog;
1646
1647 m->userspace_timestamp = userspace_timestamp;
1648 m->kernel_timestamp = kernel_timestamp;
1649 m->initrd_timestamp = initrd_timestamp;
1650 m->security_start_timestamp = security_start_timestamp;
1651 m->security_finish_timestamp = security_finish_timestamp;
1652
1653 manager_set_default_rlimits(m, arg_default_rlimit);
1654 manager_environment_add(m, NULL, arg_default_environment);
1655 manager_set_show_status(m, arg_show_status);
1656 manager_set_first_boot(m, empty_etc);
1657
1658 /* Remember whether we should queue the default job */
1659 queue_default_job = !arg_serialization || arg_switched_root;
1660
1661 before_startup = now(CLOCK_MONOTONIC);
1662
1663 r = manager_startup(m, arg_serialization, fds);
1664 if (r < 0)
1665 log_error_errno(r, "Failed to fully start up daemon: %m");
1666
1667 /* This will close all file descriptors that were opened, but
1668 * not claimed by any unit. */
1669 fdset_free(fds);
1670 fds = NULL;
1671
1672 if (arg_serialization) {
1673 fclose(arg_serialization);
1674 arg_serialization = NULL;
1675 }
1676
1677 if (queue_default_job) {
1678 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1679 Unit *target = NULL;
1680 Job *default_unit_job;
1681
1682 log_debug("Activating default unit: %s", arg_default_unit);
1683
1684 r = manager_load_unit(m, arg_default_unit, NULL, &error, &target);
1685 if (r < 0)
1686 log_error("Failed to load default target: %s", bus_error_message(&error, r));
1687 else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND)
1688 log_error_errno(target->load_error, "Failed to load default target: %m");
1689 else if (target->load_state == UNIT_MASKED)
1690 log_error("Default target masked.");
1691
1692 if (!target || target->load_state != UNIT_LOADED) {
1693 log_info("Trying to load rescue target...");
1694
1695 r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target);
1696 if (r < 0) {
1697 log_emergency("Failed to load rescue target: %s", bus_error_message(&error, r));
1698 error_message = "Failed to load rescue target";
1699 goto finish;
1700 } else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND) {
1701 log_emergency_errno(target->load_error, "Failed to load rescue target: %m");
1702 error_message = "Failed to load rescue target";
1703 goto finish;
1704 } else if (target->load_state == UNIT_MASKED) {
1705 log_emergency("Rescue target masked.");
1706 error_message = "Rescue target masked";
1707 goto finish;
1708 }
1709 }
1710
1711 assert(target->load_state == UNIT_LOADED);
1712
1713 if (arg_action == ACTION_TEST) {
1714 printf("-> By units:\n");
1715 manager_dump_units(m, stdout, "\t");
1716 }
1717
1718 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, false, &error, &default_unit_job);
1719 if (r == -EPERM) {
1720 log_debug("Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
1721
1722 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, &default_unit_job);
1723 if (r < 0) {
1724 log_emergency("Failed to start default target: %s", bus_error_message(&error, r));
1725 error_message = "Failed to start default target";
1726 goto finish;
1727 }
1728 } else if (r < 0) {
1729 log_emergency("Failed to isolate default target: %s", bus_error_message(&error, r));
1730 error_message = "Failed to isolate default target";
1731 goto finish;
1732 }
1733
1734 m->default_unit_job_id = default_unit_job->id;
1735
1736 after_startup = now(CLOCK_MONOTONIC);
1737 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
1738 "Loaded units and determined initial transaction in %s.",
1739 format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 100 * USEC_PER_MSEC));
1740
1741 if (arg_action == ACTION_TEST) {
1742 printf("-> By jobs:\n");
1743 manager_dump_jobs(m, stdout, "\t");
1744 retval = EXIT_SUCCESS;
1745 goto finish;
1746 }
1747 }
1748
1749 for (;;) {
1750 r = manager_loop(m);
1751 if (r < 0) {
1752 log_emergency_errno(r, "Failed to run main loop: %m");
1753 error_message = "Failed to run main loop";
1754 goto finish;
1755 }
1756
1757 switch (m->exit_code) {
1758
1759 case MANAGER_EXIT:
1760 retval = EXIT_SUCCESS;
1761 log_debug("Exit.");
1762 goto finish;
1763
1764 case MANAGER_RELOAD:
1765 log_info("Reloading.");
1766 r = manager_reload(m);
1767 if (r < 0)
1768 log_error_errno(r, "Failed to reload: %m");
1769 break;
1770
1771 case MANAGER_REEXECUTE:
1772
1773 if (prepare_reexecute(m, &arg_serialization, &fds, false) < 0) {
1774 error_message = "Failed to prepare for reexection";
1775 goto finish;
1776 }
1777
1778 reexecute = true;
1779 log_notice("Reexecuting.");
1780 goto finish;
1781
1782 case MANAGER_SWITCH_ROOT:
1783 /* Steal the switch root parameters */
1784 switch_root_dir = m->switch_root;
1785 switch_root_init = m->switch_root_init;
1786 m->switch_root = m->switch_root_init = NULL;
1787
1788 if (!switch_root_init)
1789 if (prepare_reexecute(m, &arg_serialization, &fds, true) < 0) {
1790 error_message = "Failed to prepare for reexection";
1791 goto finish;
1792 }
1793
1794 reexecute = true;
1795 log_notice("Switching root.");
1796 goto finish;
1797
1798 case MANAGER_REBOOT:
1799 case MANAGER_POWEROFF:
1800 case MANAGER_HALT:
1801 case MANAGER_KEXEC: {
1802 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1803 [MANAGER_REBOOT] = "reboot",
1804 [MANAGER_POWEROFF] = "poweroff",
1805 [MANAGER_HALT] = "halt",
1806 [MANAGER_KEXEC] = "kexec"
1807 };
1808
1809 assert_se(shutdown_verb = table[m->exit_code]);
1810 arm_reboot_watchdog = m->exit_code == MANAGER_REBOOT;
1811
1812 log_notice("Shutting down.");
1813 goto finish;
1814 }
1815
1816 default:
1817 assert_not_reached("Unknown exit code.");
1818 }
1819 }
1820
1821 finish:
1822 pager_close();
1823
1824 if (m)
1825 arg_shutdown_watchdog = m->shutdown_watchdog;
1826 m = manager_free(m);
1827
1828 for (j = 0; j < ELEMENTSOF(arg_default_rlimit); j++) {
1829 free(arg_default_rlimit[j]);
1830 arg_default_rlimit[j] = NULL;
1831 }
1832
1833 free(arg_default_unit);
1834 arg_default_unit = NULL;
1835
1836 free_join_controllers();
1837
1838 strv_free(arg_default_environment);
1839 arg_default_environment = NULL;
1840
1841 set_free(arg_syscall_archs);
1842 arg_syscall_archs = NULL;
1843
1844 mac_selinux_finish();
1845
1846 if (reexecute) {
1847 const char **args;
1848 unsigned i, args_size;
1849
1850 /* Close and disarm the watchdog, so that the new
1851 * instance can reinitialize it, but doesn't get
1852 * rebooted while we do that */
1853 watchdog_close(true);
1854
1855 /* Reset the RLIMIT_NOFILE to the kernel default, so
1856 * that the new systemd can pass the kernel default to
1857 * its child processes */
1858 if (saved_rlimit_nofile.rlim_cur > 0)
1859 setrlimit(RLIMIT_NOFILE, &saved_rlimit_nofile);
1860
1861 if (switch_root_dir) {
1862 /* Kill all remaining processes from the
1863 * initrd, but don't wait for them, so that we
1864 * can handle the SIGCHLD for them after
1865 * deserializing. */
1866 broadcast_signal(SIGTERM, false, true);
1867
1868 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1869 r = switch_root(switch_root_dir, "/mnt", true, MS_MOVE);
1870 if (r < 0)
1871 log_error_errno(r, "Failed to switch root, trying to continue: %m");
1872 }
1873
1874 args_size = MAX(6, argc+1);
1875 args = newa(const char*, args_size);
1876
1877 if (!switch_root_init) {
1878 char sfd[DECIMAL_STR_MAX(int) + 1];
1879
1880 /* First try to spawn ourselves with the right
1881 * path, and with full serialization. We do
1882 * this only if the user didn't specify an
1883 * explicit init to spawn. */
1884
1885 assert(arg_serialization);
1886 assert(fds);
1887
1888 xsprintf(sfd, "%i", fileno(arg_serialization));
1889
1890 i = 0;
1891 args[i++] = SYSTEMD_BINARY_PATH;
1892 if (switch_root_dir)
1893 args[i++] = "--switched-root";
1894 args[i++] = arg_running_as == MANAGER_SYSTEM ? "--system" : "--user";
1895 args[i++] = "--deserialize";
1896 args[i++] = sfd;
1897 args[i++] = NULL;
1898
1899 /* do not pass along the environment we inherit from the kernel or initrd */
1900 if (switch_root_dir)
1901 clearenv();
1902
1903 assert(i <= args_size);
1904 execv(args[0], (char* const*) args);
1905 }
1906
1907 /* Try the fallback, if there is any, without any
1908 * serialization. We pass the original argv[] and
1909 * envp[]. (Well, modulo the ordering changes due to
1910 * getopt() in argv[], and some cleanups in envp[],
1911 * but let's hope that doesn't matter.) */
1912
1913 if (arg_serialization) {
1914 fclose(arg_serialization);
1915 arg_serialization = NULL;
1916 }
1917
1918 if (fds) {
1919 fdset_free(fds);
1920 fds = NULL;
1921 }
1922
1923 /* Reopen the console */
1924 make_console_stdio();
1925
1926 for (j = 1, i = 1; j < (unsigned) argc; j++)
1927 args[i++] = argv[j];
1928 args[i++] = NULL;
1929 assert(i <= args_size);
1930
1931 /* Reenable any blocked signals, especially important
1932 * if we switch from initial ramdisk to init=... */
1933 (void) reset_all_signal_handlers();
1934 (void) reset_signal_mask();
1935
1936 if (switch_root_init) {
1937 args[0] = switch_root_init;
1938 execv(args[0], (char* const*) args);
1939 log_warning_errno(errno, "Failed to execute configured init, trying fallback: %m");
1940 }
1941
1942 args[0] = "/sbin/init";
1943 execv(args[0], (char* const*) args);
1944
1945 if (errno == ENOENT) {
1946 log_warning("No /sbin/init, trying fallback");
1947
1948 args[0] = "/bin/sh";
1949 args[1] = NULL;
1950 execv(args[0], (char* const*) args);
1951 log_error_errno(errno, "Failed to execute /bin/sh, giving up: %m");
1952 } else
1953 log_warning_errno(errno, "Failed to execute /sbin/init, giving up: %m");
1954 }
1955
1956 if (arg_serialization) {
1957 fclose(arg_serialization);
1958 arg_serialization = NULL;
1959 }
1960
1961 if (fds) {
1962 fdset_free(fds);
1963 fds = NULL;
1964 }
1965
1966 #ifdef HAVE_VALGRIND_VALGRIND_H
1967 /* If we are PID 1 and running under valgrind, then let's exit
1968 * here explicitly. valgrind will only generate nice output on
1969 * exit(), not on exec(), hence let's do the former not the
1970 * latter here. */
1971 if (getpid() == 1 && RUNNING_ON_VALGRIND)
1972 return 0;
1973 #endif
1974
1975 if (shutdown_verb) {
1976 char log_level[DECIMAL_STR_MAX(int) + 1];
1977 const char* command_line[9] = {
1978 SYSTEMD_SHUTDOWN_BINARY_PATH,
1979 shutdown_verb,
1980 "--log-level", log_level,
1981 "--log-target",
1982 };
1983 unsigned pos = 5;
1984 _cleanup_strv_free_ char **env_block = NULL;
1985
1986 assert(command_line[pos] == NULL);
1987 env_block = strv_copy(environ);
1988
1989 xsprintf(log_level, "%d", log_get_max_level());
1990
1991 switch (log_get_target()) {
1992 case LOG_TARGET_KMSG:
1993 case LOG_TARGET_JOURNAL_OR_KMSG:
1994 case LOG_TARGET_SYSLOG_OR_KMSG:
1995 command_line[pos++] = "kmsg";
1996 break;
1997
1998 case LOG_TARGET_NULL:
1999 command_line[pos++] = "null";
2000 break;
2001
2002 case LOG_TARGET_CONSOLE:
2003 default:
2004 command_line[pos++] = "console";
2005 break;
2006 };
2007
2008 if (log_get_show_color())
2009 command_line[pos++] = "--log-color";
2010
2011 if (log_get_show_location())
2012 command_line[pos++] = "--log-location";
2013
2014 assert(pos < ELEMENTSOF(command_line));
2015
2016 if (arm_reboot_watchdog && arg_shutdown_watchdog > 0) {
2017 char *e;
2018
2019 /* If we reboot let's set the shutdown
2020 * watchdog and tell the shutdown binary to
2021 * repeatedly ping it */
2022 r = watchdog_set_timeout(&arg_shutdown_watchdog);
2023 watchdog_close(r < 0);
2024
2025 /* Tell the binary how often to ping, ignore failure */
2026 if (asprintf(&e, "WATCHDOG_USEC="USEC_FMT, arg_shutdown_watchdog) > 0)
2027 strv_push(&env_block, e);
2028 } else
2029 watchdog_close(true);
2030
2031 /* Avoid the creation of new processes forked by the
2032 * kernel; at this point, we will not listen to the
2033 * signals anyway */
2034 if (detect_container(NULL) <= 0)
2035 cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
2036
2037 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
2038 log_error_errno(errno, "Failed to execute shutdown binary, %s: %m",
2039 getpid() == 1 ? "freezing" : "quitting");
2040 }
2041
2042 if (getpid() == 1) {
2043 if (error_message)
2044 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
2045 ANSI_HIGHLIGHT_RED_ON "!!!!!!" ANSI_HIGHLIGHT_OFF,
2046 "%s, freezing.", error_message);
2047 freeze();
2048 }
2049
2050 return retval;
2051 }
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