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