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systemctl: suppress error message when doing "systemctl daemon-reexec"
[thirdparty/systemd.git] / src / core / main.c
CommitLineData
d6c9574f 1/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
60918275 2
a7334b09
LP		 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
5430f7f2
LP		 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
a7334b09
LP		 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
5430f7f2 16 Lesser General Public License for more details.
a7334b09 17
5430f7f2 18 You should have received a copy of the GNU Lesser General Public License
a7334b09
LP		 19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20***/
21
ea430986
LP		 22#include <dbus/dbus.h>
23
60918275
LP		 24#include <stdio.h>
25#include <errno.h>
26#include <string.h>
16354eff 27#include <unistd.h>
4ade7963
LP		 28#include <sys/types.h>
29#include <sys/stat.h>
f170852a 30#include <getopt.h>
97c4f35c 31#include <signal.h>
4fc935ca 32#include <sys/wait.h>
80876c20 33#include <fcntl.h>
f3b6a3ed 34#include <sys/prctl.h>
664f88a7 35#include <sys/mount.h>
60918275
LP		 36
37#include "manager.h"
16354eff 38#include "log.h"
302e8c4c 39#include "load-fragment.h"
a16e1123 40#include "fdset.h"
514f4ef5 41#include "special.h"
487393e9 42#include "conf-parser.h"
449101fc 43#include "dbus-common.h"
ad780f19 44#include "missing.h"
e51bc1a2 45#include "label.h"
302e27c8 46#include "build.h"
06d4c99a 47#include "strv.h"
f6a6225e 48#include "def.h"
b52aae1d 49#include "virt.h"
e96d6be7 50#include "watchdog.h"
664f88a7 51#include "path-util.h"
41669317 52#include "switch-root.h"
ec8927ca 53#include "capability.h"
bd3fa1d2 54#include "killall.h"
0c4025d1
LP		 55#include "env-util.h"
56#include "hwclock.h"
57#include "sd-daemon.h"
e8e581bf 58#include "sd-messages.h"
60918275 59
b6e66135
LP		 60#include "mount-setup.h"
61#include "loopback-setup.h"
e3043162 62#ifdef HAVE_KMOD
b6e66135 63#include "kmod-setup.h"
e3043162 64#endif
b6e66135
LP		 65#include "hostname-setup.h"
66#include "machine-id-setup.h"
67#include "locale-setup.h"
68#include "selinux-setup.h"
69#include "ima-setup.h"
a5c32cff 70#include "fileio.h"
ffbd2c4d 71#include "smack-setup.h"
b6e66135 72
f170852a
LP		 73static enum {
74 ACTION_RUN,
e965d56d 75 ACTION_HELP,
9ba0bc4e 76 ACTION_VERSION,
e537352b 77 ACTION_TEST,
4288f619
LP		 78 ACTION_DUMP_CONFIGURATION_ITEMS,
79 ACTION_DONE
fa0f4d8a 80} arg_action = ACTION_RUN;
f170852a 81
fa0f4d8a 82static char *arg_default_unit = NULL;
67445f4e 83static SystemdRunningAs arg_running_as = _SYSTEMD_RUNNING_AS_INVALID;
fa0f4d8a
LP		 84
85static bool arg_dump_core = true;
86static bool arg_crash_shell = false;
87static int arg_crash_chvt = -1;
88static bool arg_confirm_spawn = false;
9e58ff9c 89static bool arg_show_status = true;
bf4df7c3 90static bool arg_switched_root = false;
0c85a4f3 91static char ***arg_join_controllers = NULL;
706343f4 92static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
0a494f1f 93static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
e96d6be7
LP		 94static usec_t arg_runtime_watchdog = 0;
95static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
97d0e5f8 96static char **arg_default_environment = NULL;
c93ff2e9 97static struct rlimit *arg_default_rlimit[RLIMIT_NLIMITS] = {};
ec8927ca 98static uint64_t arg_capability_bounding_set_drop = 0;
aa0f64ac 99static nsec_t arg_timer_slack_nsec = (nsec_t) -1;
4fc935ca 100
a16e1123 101static FILE* serialization = NULL;
80876c20 102
6f5e3f35
LP		 103static void nop_handler(int sig) {
104}
105
93a46b0b 106_noreturn_ static void crash(int sig) {
97c4f35c 107
abb26902
LP		 108 if (getpid() != 1)
109 /* Pass this on immediately, if this is not PID 1 */
110 raise(sig);
111 else if (!arg_dump_core)
582a507f 112 log_error("Caught <%s>, not dumping core.", signal_to_string(sig));
97c4f35c 113 else {
b92bea5d
ZJS		 114 struct sigaction sa = {
115 .sa_handler = nop_handler,
116 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
117 };
97c4f35c
LP		 118 pid_t pid;
119
6f5e3f35 120 /* We want to wait for the core process, hence let's enable SIGCHLD */
abb26902 121 sigaction(SIGCHLD, &sa, NULL);
6f5e3f35 122
e62d8c39
ZJS		 123 pid = fork();
124 if (pid < 0)
7989e1f2 125 log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig), strerror(errno));
97c4f35c
LP		 126
127 else if (pid == 0) {
b92bea5d 128 struct rlimit rl = {};
97c4f35c
LP		 129
130 /* Enable default signal handler for core dump */
131 zero(sa);
132 sa.sa_handler = SIG_DFL;
abb26902 133 sigaction(sig, &sa, NULL);
97c4f35c
LP		 134
135 /* Don't limit the core dump size */
97c4f35c
LP		 136 rl.rlim_cur = RLIM_INFINITY;
137 rl.rlim_max = RLIM_INFINITY;
138 setrlimit(RLIMIT_CORE, &rl);
139
140 /* Just to be sure... */
abb26902 141 chdir("/");
97c4f35c
LP		 142
143 /* Raise the signal again */
144 raise(sig);
145
146 assert_not_reached("We shouldn't be here...");
147 _exit(1);
4fc935ca
LP		 148
149 } else {
8e12a6ae
LP		 150 siginfo_t status;
151 int r;
4fc935ca
LP		 152
153 /* Order things nicely. */
e62d8c39
ZJS		 154 r = wait_for_terminate(pid, &status);
155 if (r < 0)
7989e1f2 156 log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig), strerror(-r));
8e12a6ae 157 else if (status.si_code != CLD_DUMPED)
7989e1f2 158 log_error("Caught <%s>, core dump failed.", signal_to_string(sig));
4fc935ca 159 else
7989e1f2 160 log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig), (unsigned long) pid);
97c4f35c
LP		 161 }
162 }
163
fa0f4d8a
LP		 164 if (arg_crash_chvt)
165 chvt(arg_crash_chvt);
601f6a1e 166
fa0f4d8a 167 if (arg_crash_shell) {
b92bea5d
ZJS		 168 struct sigaction sa = {
169 .sa_handler = SIG_IGN,
170 .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
171 };
6f5e3f35 172 pid_t pid;
8c43883a 173
4fc935ca
LP		 174 log_info("Executing crash shell in 10s...");
175 sleep(10);
176
6f5e3f35 177 /* Let the kernel reap children for us */
6f5e3f35 178 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
8c43883a 179
cd3bd60a
LP		 180 pid = fork();
181 if (pid < 0)
14212119 182 log_error("Failed to fork off crash shell: %m");
6f5e3f35 183 else if (pid == 0) {
cd3bd60a 184 make_console_stdio();
6f5e3f35
LP		 185 execl("/bin/sh", "/bin/sh", NULL);
186
14212119 187 log_error("execl() failed: %m");
6f5e3f35
LP		 188 _exit(1);
189 }
c99b188e 190
7989e1f2 191 log_info("Successfully spawned crash shell as pid %lu.", (unsigned long) pid);
4fc935ca
LP		 192 }
193
194 log_info("Freezing execution.");
97c4f35c
LP		 195 freeze();
196}
197
198static void install_crash_handler(void) {
b92bea5d
ZJS		 199 struct sigaction sa = {
200 .sa_handler = crash,
201 .sa_flags = SA_NODEFER,
202 };
97c4f35c 203
1b91d3e8 204 sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
97c4f35c 205}
f170852a 206
843d2643
LP		 207static int console_setup(bool do_reset) {
208 int tty_fd, r;
80876c20 209
843d2643
LP		 210 /* If we are init, we connect stdin/stdout/stderr to /dev/null
211 * and make sure we don't have a controlling tty. */
80876c20 212
843d2643
LP		 213 release_terminal();
214
215 if (!do_reset)
216 return 0;
80876c20 217
512947d4
MS		 218 tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
219 if (tty_fd < 0) {
843d2643
LP		 220 log_error("Failed to open /dev/console: %s", strerror(-tty_fd));
221 return -tty_fd;
222 }
80876c20 223
512947d4
MS		 224 /* We don't want to force text mode.
225 * plymouth may be showing pictures already from initrd. */
226 r = reset_terminal_fd(tty_fd, false);
227 if (r < 0)
843d2643
LP		 228 log_error("Failed to reset /dev/console: %s", strerror(-r));
229
230 close_nointr_nofail(tty_fd);
80876c20
LP		 231 return r;
232}
233
f170852a
LP		 234static int set_default_unit(const char *u) {
235 char *c;
236
237 assert(u);
238
bf4df7c3
LP		 239 c = strdup(u);
240 if (!c)
f170852a
LP		 241 return -ENOMEM;
242
fa0f4d8a
LP		 243 free(arg_default_unit);
244 arg_default_unit = c;
bf4df7c3 245
f170852a
LP		 246 return 0;
247}
248
249static int parse_proc_cmdline_word(const char *word) {
250
251 static const char * const rlmap[] = {
ed370f5d 252 "emergency", SPECIAL_EMERGENCY_TARGET,
099663ff 253 "-b", SPECIAL_EMERGENCY_TARGET,
ed370f5d
LP		 254 "single", SPECIAL_RESCUE_TARGET,
255 "-s", SPECIAL_RESCUE_TARGET,
256 "s", SPECIAL_RESCUE_TARGET,
257 "S", SPECIAL_RESCUE_TARGET,
258 "1", SPECIAL_RESCUE_TARGET,
259 "2", SPECIAL_RUNLEVEL2_TARGET,
260 "3", SPECIAL_RUNLEVEL3_TARGET,
261 "4", SPECIAL_RUNLEVEL4_TARGET,
262 "5", SPECIAL_RUNLEVEL5_TARGET,
f170852a
LP		 263 };
264
5192bd19
LP		 265 assert(word);
266
bf4df7c3
LP		 267 if (startswith(word, "systemd.unit=")) {
268
269 if (!in_initrd())
270 return set_default_unit(word + 13);
271
272 } else if (startswith(word, "rd.systemd.unit=")) {
273
274 if (in_initrd())
275 return set_default_unit(word + 16);
f170852a 276
bf4df7c3 277 } else if (startswith(word, "systemd.log_target=")) {
f170852a
LP		 278
279 if (log_set_target_from_string(word + 19) < 0)
280 log_warning("Failed to parse log target %s. Ignoring.", word + 19);
281
282 } else if (startswith(word, "systemd.log_level=")) {
283
284 if (log_set_max_level_from_string(word + 18) < 0)
285 log_warning("Failed to parse log level %s. Ignoring.", word + 18);
286
bbe63281
LP		 287 } else if (startswith(word, "systemd.log_color=")) {
288
289 if (log_show_color_from_string(word + 18) < 0)
290 log_warning("Failed to parse log color setting %s. Ignoring.", word + 18);
291
292 } else if (startswith(word, "systemd.log_location=")) {
293
294 if (log_show_location_from_string(word + 21) < 0)
295 log_warning("Failed to parse log location setting %s. Ignoring.", word + 21);
296
4fc935ca
LP		 297 } else if (startswith(word, "systemd.dump_core=")) {
298 int r;
299
300 if ((r = parse_boolean(word + 18)) < 0)
509b6efb 301 log_warning("Failed to parse dump core switch %s. Ignoring.", word + 18);
4fc935ca 302 else
fa0f4d8a 303 arg_dump_core = r;
4fc935ca
LP		 304
305 } else if (startswith(word, "systemd.crash_shell=")) {
306 int r;
307
308 if ((r = parse_boolean(word + 20)) < 0)
509b6efb 309 log_warning("Failed to parse crash shell switch %s. Ignoring.", word + 20);
4fc935ca 310 else
fa0f4d8a 311 arg_crash_shell = r;
5e7ee61c
LP		 312
313 } else if (startswith(word, "systemd.confirm_spawn=")) {
314 int r;
315
316 if ((r = parse_boolean(word + 22)) < 0)
509b6efb 317 log_warning("Failed to parse confirm spawn switch %s. Ignoring.", word + 22);
5e7ee61c 318 else
fa0f4d8a 319 arg_confirm_spawn = r;
5e7ee61c 320
601f6a1e
LP		 321 } else if (startswith(word, "systemd.crash_chvt=")) {
322 int k;
323
324 if (safe_atoi(word + 19, &k) < 0)
509b6efb 325 log_warning("Failed to parse crash chvt switch %s. Ignoring.", word + 19);
601f6a1e 326 else
fa0f4d8a 327 arg_crash_chvt = k;
601f6a1e 328
9e58ff9c
LP		 329 } else if (startswith(word, "systemd.show_status=")) {
330 int r;
331
332 if ((r = parse_boolean(word + 20)) < 0)
509b6efb 333 log_warning("Failed to parse show status switch %s. Ignoring.", word + 20);
6e98720f 334 else
9e58ff9c 335 arg_show_status = r;
0a494f1f
LP		 336 } else if (startswith(word, "systemd.default_standard_output=")) {
337 int r;
338
339 if ((r = exec_output_from_string(word + 32)) < 0)
509b6efb 340 log_warning("Failed to parse default standard output switch %s. Ignoring.", word + 32);
0a494f1f
LP		 341 else
342 arg_default_std_output = r;
343 } else if (startswith(word, "systemd.default_standard_error=")) {
344 int r;
345
346 if ((r = exec_output_from_string(word + 31)) < 0)
509b6efb 347 log_warning("Failed to parse default standard error switch %s. Ignoring.", word + 31);
0a494f1f
LP		 348 else
349 arg_default_std_error = r;
9e7c5357 350 } else if (startswith(word, "systemd.setenv=")) {
0c4025d1
LP		 351 _cleanup_free_ char *cenv = NULL;
352 char *eq;
9e7c5357
WD		 353 int r;
354
355 cenv = strdup(word + 15);
356 if (!cenv)
357 return -ENOMEM;
358
359 eq = strchr(cenv, '=');
360 if (!eq) {
0c4025d1
LP		 361 if (!env_name_is_valid(cenv))
362 log_warning("Environment variable name '%s' is not valid. Ignoring.", cenv);
363 else {
364 r = unsetenv(cenv);
365 if (r < 0)
366 log_warning("Unsetting environment variable '%s' failed, ignoring: %m", cenv);
367 }
9e7c5357 368 } else {
0c4025d1
LP		 369 if (!env_assignment_is_valid(cenv))
370 log_warning("Environment variable assignment '%s' is not valid. Ignoring.", cenv);
371 else {
372 *eq = 0;
373 r = setenv(cenv, eq + 1, 1);
374 if (r < 0)
375 log_warning("Setting environment variable '%s=%s' failed, ignoring: %m", cenv, eq + 1);
376 }
9e7c5357 377 }
9e58ff9c 378
66a78c2b
LP		 379 } else if (startswith(word, "systemd.") ||
380 (in_initrd() && startswith(word, "rd.systemd."))) {
4fc935ca 381
dd7c30c3
LP		 382 const char *c;
383
384 /* Ignore systemd.journald.xyz and friends */
385 c = word;
386 if (startswith(c, "rd."))
387 c += 3;
388 if (startswith(c, "systemd."))
389 c += 8;
390 if (c[strcspn(c, ".=")] != '.') {
391
392 log_warning("Unknown kernel switch %s. Ignoring.", word);
393
394 log_info("Supported kernel switches:\n"
395 "systemd.unit=UNIT Default unit to start\n"
396 "rd.systemd.unit=UNIT Default unit to start when run in initrd\n"
397 "systemd.dump_core=0|1 Dump core on crash\n"
398 "systemd.crash_shell=0|1 Run shell on crash\n"
399 "systemd.crash_chvt=N Change to VT #N on crash\n"
400 "systemd.confirm_spawn=0|1 Confirm every process spawn\n"
401 "systemd.show_status=0|1 Show status updates on the console during bootup\n"
402 "systemd.log_target=console|kmsg|journal|journal-or-kmsg|syslog|syslog-or-kmsg|null\n"
403 " Log target\n"
404 "systemd.log_level=LEVEL Log level\n"
405 "systemd.log_color=0|1 Highlight important log messages\n"
406 "systemd.log_location=0|1 Include code location in log messages\n"
407 "systemd.default_standard_output=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n"
408 " Set default log output for services\n"
409 "systemd.default_standard_error=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n"
410 " Set default log error output for services\n"
411 "systemd.setenv=ASSIGNMENT Set an environment variable for all spawned processes\n");
412 }
4fc935ca 413
d081dffb 414 } else if (streq(word, "quiet"))
6e98720f 415 arg_show_status = false;
9749cd77
LN		 416 else if (streq(word, "debug"))
417 log_set_max_level(LOG_DEBUG);
d081dffb 418 else if (!in_initrd()) {
f170852a
LP		 419 unsigned i;
420
421 /* SysV compatibility */
f170852a
LP		 422 for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
423 if (streq(word, rlmap[i]))
424 return set_default_unit(rlmap[i+1]);
425 }
426
427 return 0;
428}
429
e8e581bf
ZJS		 430#define DEFINE_SETTER(name, func, descr) \
431 static int name(const char *unit, \
432 const char *filename, \
433 unsigned line, \
434 const char *section, \
435 const char *lvalue, \
436 int ltype, \
437 const char *rvalue, \
438 void *data, \
439 void *userdata) { \
440 \
441 int r; \
442 \
443 assert(filename); \
444 assert(lvalue); \
445 assert(rvalue); \
446 \
447 r = func(rvalue); \
448 if (r < 0) \
449 log_syntax(unit, LOG_ERR, filename, line, -r, \
450 "Invalid " descr "'%s': %s", \
451 rvalue, strerror(-r)); \
452 \
453 return 0; \
454 }
487393e9 455
e8e581bf
ZJS		 456DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level")
457DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target")
458DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" )
459DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location")
487393e9 460
487393e9 461
e8e581bf
ZJS		 462static int config_parse_cpu_affinity2(const char *unit,
463 const char *filename,
464 unsigned line,
465 const char *section,
466 const char *lvalue,
467 int ltype,
468 const char *rvalue,
469 void *data,
470 void *userdata) {
487393e9
LP		 471
472 char *w;
473 size_t l;
474 char *state;
475 cpu_set_t *c = NULL;
476 unsigned ncpus = 0;
477
478 assert(filename);
479 assert(lvalue);
480 assert(rvalue);
481
f60f22df 482 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
487393e9
LP		 483 char *t;
484 int r;
485 unsigned cpu;
486
487 if (!(t = strndup(w, l)))
14212119 488 return log_oom();
487393e9
LP		 489
490 r = safe_atou(t, &cpu);
491 free(t);
492
493 if (!c)
494 if (!(c = cpu_set_malloc(&ncpus)))
14212119 495 return log_oom();
487393e9
LP		 496
497 if (r < 0 || cpu >= ncpus) {
e8e581bf
ZJS		 498 log_syntax(unit, LOG_ERR, filename, line, -r,
499 "Failed to parse CPU affinity '%s'", rvalue);
487393e9
LP		 500 CPU_FREE(c);
501 return -EBADMSG;
502 }
503
504 CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c);
505 }
506
507 if (c) {
508 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
e8e581bf 509 log_warning_unit(unit, "Failed to set CPU affinity: %m");
487393e9
LP		 510
511 CPU_FREE(c);
512 }
513
514 return 0;
515}
516
0c85a4f3
LP		 517static void strv_free_free(char ***l) {
518 char ***i;
519
520 if (!l)
521 return;
522
523 for (i = l; *i; i++)
524 strv_free(*i);
525
526 free(l);
527}
528
529static void free_join_controllers(void) {
0c85a4f3
LP		 530 strv_free_free(arg_join_controllers);
531 arg_join_controllers = NULL;
532}
533
e8e581bf
ZJS		 534static int config_parse_join_controllers(const char *unit,
535 const char *filename,
536 unsigned line,
537 const char *section,
538 const char *lvalue,
539 int ltype,
540 const char *rvalue,
541 void *data,
542 void *userdata) {
0c85a4f3
LP		 543
544 unsigned n = 0;
545 char *state, *w;
546 size_t length;
547
548 assert(filename);
549 assert(lvalue);
550 assert(rvalue);
551
552 free_join_controllers();
553
554 FOREACH_WORD_QUOTED(w, length, rvalue, state) {
555 char *s, **l;
556
557 s = strndup(w, length);
558 if (!s)
14212119 559 return log_oom();
0c85a4f3
LP		 560
561 l = strv_split(s, ",");
562 free(s);
563
564 strv_uniq(l);
565
566 if (strv_length(l) <= 1) {
567 strv_free(l);
568 continue;
569 }
570
571 if (!arg_join_controllers) {
572 arg_join_controllers = new(char**, 2);
573 if (!arg_join_controllers) {
574 strv_free(l);
14212119 575 return log_oom();
0c85a4f3
LP		 576 }
577
578 arg_join_controllers[0] = l;
579 arg_join_controllers[1] = NULL;
580
581 n = 1;
582 } else {
583 char ***a;
584 char ***t;
585
586 t = new0(char**, n+2);
587 if (!t) {
588 strv_free(l);
14212119 589 return log_oom();
0c85a4f3
LP		 590 }
591
592 n = 0;
593
594 for (a = arg_join_controllers; *a; a++) {
595
596 if (strv_overlap(*a, l)) {
597 char **c;
598
599 c = strv_merge(*a, l);
600 if (!c) {
601 strv_free(l);
602 strv_free_free(t);
14212119 603 return log_oom();
0c85a4f3
LP		 604 }
605
606 strv_free(l);
607 l = c;
608 } else {
609 char **c;
610
611 c = strv_copy(*a);
612 if (!c) {
613 strv_free(l);
614 strv_free_free(t);
14212119 615 return log_oom();
0c85a4f3
LP		 616 }
617
618 t[n++] = c;
619 }
620 }
621
622 t[n++] = strv_uniq(l);
623
624 strv_free_free(arg_join_controllers);
625 arg_join_controllers = t;
626 }
627 }
628
629 return 0;
630}
631
487393e9
LP		 632static int parse_config_file(void) {
633
f975e971
LP		 634 const ConfigTableItem items[] = {
635 { "Manager", "LogLevel", config_parse_level2, 0, NULL },
636 { "Manager", "LogTarget", config_parse_target, 0, NULL },
637 { "Manager", "LogColor", config_parse_color, 0, NULL },
638 { "Manager", "LogLocation", config_parse_location, 0, NULL },
639 { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
640 { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
641 { "Manager", "ShowStatus", config_parse_bool, 0, &arg_show_status },
f975e971
LP		 642 { "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt },
643 { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
f975e971
LP		 644 { "Manager", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output },
645 { "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error },
0c85a4f3 646 { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
7f602784
LP		 647 { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog },
648 { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog },
ec8927ca 649 { "Manager", "CapabilityBoundingSet", config_parse_bounding_set, 0, &arg_capability_bounding_set_drop },
aa0f64ac 650 { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
97d0e5f8 651 { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
c93ff2e9
FC		 652 { "Manager", "DefaultLimitCPU", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CPU]},
653 { "Manager", "DefaultLimitFSIZE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_FSIZE]},
654 { "Manager", "DefaultLimitDATA", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_DATA]},
655 { "Manager", "DefaultLimitSTACK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_STACK]},
656 { "Manager", "DefaultLimitCORE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CORE]},
657 { "Manager", "DefaultLimitRSS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RSS]},
658 { "Manager", "DefaultLimitNOFILE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NOFILE]},
659 { "Manager", "DefaultLimitAS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_AS]},
660 { "Manager", "DefaultLimitNPROC", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NPROC]},
661 { "Manager", "DefaultLimitMEMLOCK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MEMLOCK]},
662 { "Manager", "DefaultLimitLOCKS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_LOCKS]},
663 { "Manager", "DefaultLimitSIGPENDING",config_parse_limit, 0, &arg_default_rlimit[RLIMIT_SIGPENDING]},
664 { "Manager", "DefaultLimitMSGQUEUE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MSGQUEUE]},
665 { "Manager", "DefaultLimitNICE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NICE]},
666 { "Manager", "DefaultLimitRTPRIO", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTPRIO]},
667 { "Manager", "DefaultLimitRTTIME", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTTIME]},
f975e971 668 { NULL, NULL, NULL, 0, NULL }
487393e9
LP		 669 };
670
7fd1b19b 671 _cleanup_fclose_ FILE *f;
487393e9
LP		 672 const char *fn;
673 int r;
674
19adb8a3 675 fn = arg_running_as == SYSTEMD_SYSTEM ? PKGSYSCONFDIR "/system.conf" : PKGSYSCONFDIR "/user.conf";
f975e971
LP		 676 f = fopen(fn, "re");
677 if (!f) {
487393e9
LP		 678 if (errno == ENOENT)
679 return 0;
680
681 log_warning("Failed to open configuration file '%s': %m", fn);
682 return 0;
683 }
684
db5c0122 685 r = config_parse(NULL, fn, f, "Manager\0", config_item_table_lookup, (void*) items, false, false, NULL);
f975e971 686 if (r < 0)
487393e9
LP		 687 log_warning("Failed to parse configuration file: %s", strerror(-r));
688
487393e9
LP		 689 return 0;
690}
691
f170852a 692static int parse_proc_cmdline(void) {
7fd1b19b 693 _cleanup_free_ char *line = NULL;
543295ad 694 char *w, *state;
f170852a 695 int r;
f170852a 696 size_t l;
f170852a 697
b770165a
LP		 698 /* Don't read /proc/cmdline if we are in a container, since
699 * that is only relevant for the host system */
700 if (detect_container(NULL) > 0)
701 return 0;
702
543295ad
ZJS		 703 r = read_one_line_file("/proc/cmdline", &line);
704 if (r < 0) {
e364ad06 705 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
f170852a
LP		 706 return 0;
707 }
708
709 FOREACH_WORD_QUOTED(w, l, line, state) {
7fd1b19b 710 _cleanup_free_ char *word;
f170852a 711
543295ad
ZJS		 712 word = strndup(w, l);
713 if (!word)
714 return log_oom();
f170852a
LP		 715
716 r = parse_proc_cmdline_word(word);
14212119
SL		 717 if (r < 0) {
718 log_error("Failed on cmdline argument %s: %s", word, strerror(-r));
543295ad 719 return r;
14212119 720 }
f170852a
LP		 721 }
722
543295ad 723 return 0;
f170852a
LP		 724}
725
726static int parse_argv(int argc, char *argv[]) {
727
728 enum {
729 ARG_LOG_LEVEL = 0x100,
730 ARG_LOG_TARGET,
bbe63281
LP		 731 ARG_LOG_COLOR,
732 ARG_LOG_LOCATION,
2f198e2f 733 ARG_UNIT,
edb9aaa8 734 ARG_SYSTEM,
af2d49f7 735 ARG_USER,
e537352b 736 ARG_TEST,
9ba0bc4e 737 ARG_VERSION,
80876c20 738 ARG_DUMP_CONFIGURATION_ITEMS,
9e58ff9c
LP		 739 ARG_DUMP_CORE,
740 ARG_CRASH_SHELL,
a16e1123 741 ARG_CONFIRM_SPAWN,
9e58ff9c 742 ARG_SHOW_STATUS,
4288f619 743 ARG_DESERIALIZE,
2660882b 744 ARG_SWITCHED_ROOT,
0a494f1f
LP		 745 ARG_INTROSPECT,
746 ARG_DEFAULT_STD_OUTPUT,
747 ARG_DEFAULT_STD_ERROR
f170852a
LP		 748 };
749
750 static const struct option options[] = {
a16e1123
LP		 751 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
752 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
bbe63281
LP		 753 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
754 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
2f198e2f 755 { "unit", required_argument, NULL, ARG_UNIT },
edb9aaa8 756 { "system", no_argument, NULL, ARG_SYSTEM },
af2d49f7 757 { "user", no_argument, NULL, ARG_USER },
a16e1123
LP		 758 { "test", no_argument, NULL, ARG_TEST },
759 { "help", no_argument, NULL, 'h' },
9ba0bc4e 760 { "version", no_argument, NULL, ARG_VERSION },
a16e1123 761 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
a5d87bf0
LP		 762 { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
763 { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
764 { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
6e98720f 765 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
a16e1123 766 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
2660882b 767 { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
4288f619 768 { "introspect", optional_argument, NULL, ARG_INTROSPECT },
0a494f1f
LP		 769 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
770 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
a16e1123 771 { NULL, 0, NULL, 0 }
f170852a
LP		 772 };
773
774 int c, r;
775
776 assert(argc >= 1);
777 assert(argv);
778
b770165a
LP		 779 if (getpid() == 1)
780 opterr = 0;
781
099663ff 782 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
f170852a
LP		 783
784 switch (c) {
785
786 case ARG_LOG_LEVEL:
787 if ((r = log_set_max_level_from_string(optarg)) < 0) {
788 log_error("Failed to parse log level %s.", optarg);
789 return r;
790 }
791
792 break;
793
794 case ARG_LOG_TARGET:
795
796 if ((r = log_set_target_from_string(optarg)) < 0) {
797 log_error("Failed to parse log target %s.", optarg);
798 return r;
799 }
800
801 break;
802
bbe63281
LP		 803 case ARG_LOG_COLOR:
804
d0b170c8
LP		 805 if (optarg) {
806 if ((r = log_show_color_from_string(optarg)) < 0) {
807 log_error("Failed to parse log color setting %s.", optarg);
808 return r;
809 }
810 } else
811 log_show_color(true);
bbe63281
LP		 812
813 break;
814
815 case ARG_LOG_LOCATION:
816
d0b170c8
LP		 817 if (optarg) {
818 if ((r = log_show_location_from_string(optarg)) < 0) {
819 log_error("Failed to parse log location setting %s.", optarg);
820 return r;
821 }
822 } else
823 log_show_location(true);
bbe63281
LP		 824
825 break;
826
0a494f1f
LP		 827 case ARG_DEFAULT_STD_OUTPUT:
828
829 if ((r = exec_output_from_string(optarg)) < 0) {
830 log_error("Failed to parse default standard output setting %s.", optarg);
831 return r;
832 } else
833 arg_default_std_output = r;
834 break;
835
836 case ARG_DEFAULT_STD_ERROR:
837
838 if ((r = exec_output_from_string(optarg)) < 0) {
839 log_error("Failed to parse default standard error output setting %s.", optarg);
840 return r;
841 } else
842 arg_default_std_error = r;
843 break;
844
2f198e2f 845 case ARG_UNIT:
f170852a
LP		 846
847 if ((r = set_default_unit(optarg)) < 0) {
848 log_error("Failed to set default unit %s: %s", optarg, strerror(-r));
849 return r;
850 }
851
852 break;
853
edb9aaa8 854 case ARG_SYSTEM:
67445f4e 855 arg_running_as = SYSTEMD_SYSTEM;
edb9aaa8 856 break;
a5dab5ce 857
af2d49f7 858 case ARG_USER:
67445f4e 859 arg_running_as = SYSTEMD_USER;
a5dab5ce 860 break;
a5dab5ce 861
e965d56d 862 case ARG_TEST:
fa0f4d8a 863 arg_action = ACTION_TEST;
e965d56d
LP		 864 break;
865
9ba0bc4e
ZJS		 866 case ARG_VERSION:
867 arg_action = ACTION_VERSION;
868 break;
869
e537352b 870 case ARG_DUMP_CONFIGURATION_ITEMS:
fa0f4d8a 871 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
e537352b
LP		 872 break;
873
9e58ff9c 874 case ARG_DUMP_CORE:
a5d87bf0
LP		 875 r = optarg ? parse_boolean(optarg) : 1;
876 if (r < 0) {
877 log_error("Failed to parse dump core boolean %s.", optarg);
878 return r;
879 }
880 arg_dump_core = r;
9e58ff9c
LP		 881 break;
882
883 case ARG_CRASH_SHELL:
a5d87bf0
LP		 884 r = optarg ? parse_boolean(optarg) : 1;
885 if (r < 0) {
886 log_error("Failed to parse crash shell boolean %s.", optarg);
887 return r;
888 }
889 arg_crash_shell = r;
9e58ff9c
LP		 890 break;
891
80876c20 892 case ARG_CONFIRM_SPAWN:
a5d87bf0
LP		 893 r = optarg ? parse_boolean(optarg) : 1;
894 if (r < 0) {
895 log_error("Failed to parse confirm spawn boolean %s.", optarg);
896 return r;
897 }
898 arg_confirm_spawn = r;
80876c20
LP		 899 break;
900
9e58ff9c 901 case ARG_SHOW_STATUS:
a5d87bf0
LP		 902 r = optarg ? parse_boolean(optarg) : 1;
903 if (r < 0) {
904 log_error("Failed to parse show status boolean %s.", optarg);
905 return r;
906 }
907 arg_show_status = r;
6e98720f 908 break;
a5d87bf0 909
a16e1123
LP		 910 case ARG_DESERIALIZE: {
911 int fd;
912 FILE *f;
913
01e10de3
LP		 914 r = safe_atoi(optarg, &fd);
915 if (r < 0 || fd < 0) {
a16e1123 916 log_error("Failed to parse deserialize option %s.", optarg);
01e10de3 917 return r < 0 ? r : -EINVAL;
a16e1123
LP		 918 }
919
01e10de3
LP		 920 fd_cloexec(fd, true);
921
922 f = fdopen(fd, "r");
923 if (!f) {
a16e1123 924 log_error("Failed to open serialization fd: %m");
01e10de3 925 return -errno;
a16e1123
LP		 926 }
927
928 if (serialization)
929 fclose(serialization);
930
931 serialization = f;
932
933 break;
934 }
935
2660882b 936 case ARG_SWITCHED_ROOT:
bf4df7c3 937 arg_switched_root = true;
d03bc1b8
HH		 938 break;
939
4288f619
LP		 940 case ARG_INTROSPECT: {
941 const char * const * i = NULL;
942
943 for (i = bus_interface_table; *i; i += 2)
944 if (!optarg || streq(i[0], optarg)) {
945 fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
946 "<node>\n", stdout);
947 fputs(i[1], stdout);
948 fputs("</node>\n", stdout);
949
950 if (optarg)
951 break;
952 }
953
954 if (!i[0] && optarg)
955 log_error("Unknown interface %s.", optarg);
956
fa0f4d8a 957 arg_action = ACTION_DONE;
4288f619
LP		 958 break;
959 }
960
f170852a 961 case 'h':
fa0f4d8a 962 arg_action = ACTION_HELP;
f170852a
LP		 963 break;
964
1d2e23ab
LP		 965 case 'D':
966 log_set_max_level(LOG_DEBUG);
967 break;
968
099663ff
LP		 969 case 'b':
970 case 's':
971 case 'z':
972 /* Just to eat away the sysvinit kernel
973 * cmdline args without getopt() error
974 * messages that we'll parse in
975 * parse_proc_cmdline_word() or ignore. */
f170852a 976
099663ff 977 case '?':
f170852a 978 default:
099663ff
LP		 979 if (getpid() != 1) {
980 log_error("Unknown option code %c", c);
981 return -EINVAL;
982 }
983
984 break;
f170852a
LP		 985 }
986
d821e6d6
LP		 987 if (optind < argc && getpid() != 1) {
988 /* Hmm, when we aren't run as init system
989 * let's complain about excess arguments */
990
991 log_error("Excess arguments.");
992 return -EINVAL;
993 }
994
995 if (detect_container(NULL) > 0) {
996 char **a;
997
998 /* All /proc/cmdline arguments the kernel didn't
999 * understand it passed to us. We're not really
1000 * interested in that usually since /proc/cmdline is
1001 * more interesting and complete. With one exception:
1002 * if we are run in a container /proc/cmdline is not
1003 * relevant for the container, hence we rely on argv[]
1004 * instead. */
1005
1006 for (a = argv; a < argv + argc; a++)
14212119
SL		 1007 if ((r = parse_proc_cmdline_word(*a)) < 0) {
1008 log_error("Failed on cmdline argument %s: %s", *a, strerror(-r));
d821e6d6 1009 return r;
14212119 1010 }
51f0e189
LP		 1011 }
1012
f170852a
LP		 1013 return 0;
1014}
1015
1016static int help(void) {
1017
2e33c433 1018 printf("%s [OPTIONS...]\n\n"
af2d49f7 1019 "Starts up and maintains the system or user services.\n\n"
e537352b 1020 " -h --help Show this help\n"
e537352b 1021 " --test Determine startup sequence, dump it and exit\n"
80876c20 1022 " --dump-configuration-items Dump understood unit configuration items\n"
bbe63281 1023 " --introspect[=INTERFACE] Extract D-Bus interface data\n"
9e58ff9c 1024 " --unit=UNIT Set default unit\n"
edb9aaa8 1025 " --system Run a system instance, even if PID != 1\n"
af2d49f7 1026 " --user Run a user instance\n"
a5d87bf0
LP		 1027 " --dump-core[=0|1] Dump core on crash\n"
1028 " --crash-shell[=0|1] Run shell on crash\n"
1029 " --confirm-spawn[=0|1] Ask for confirmation when spawning processes\n"
6e98720f 1030 " --show-status[=0|1] Show status updates on the console during bootup\n"
4cfa2c99 1031 " --log-target=TARGET Set log target (console, journal, syslog, kmsg, journal-or-kmsg, syslog-or-kmsg, null)\n"
9e58ff9c 1032 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
2218198b 1033 " --log-color[=0|1] Highlight important log messages\n"
0a494f1f
LP		 1034 " --log-location[=0|1] Include code location in log messages\n"
1035 " --default-standard-output= Set default standard output for services\n"
1036 " --default-standard-error= Set default standard error output for services\n",
5b6319dc 1037 program_invocation_short_name);
f170852a
LP		 1038
1039 return 0;
1040}
1041
9ba0bc4e
ZJS		 1042static int version(void) {
1043 puts(PACKAGE_STRING);
9ba0bc4e
ZJS		 1044 puts(SYSTEMD_FEATURES);
1045
1046 return 0;
1047}
1048
b3680f49 1049static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) {
a16e1123
LP		 1050 FILE *f = NULL;
1051 FDSet *fds = NULL;
1052 int r;
1053
1054 assert(m);
1055 assert(_f);
1056 assert(_fds);
1057
a7556052
LP		 1058 /* Make sure nothing is really destructed when we shut down */
1059 m->n_reloading ++;
1060
6b78f9b4
LP		 1061 r = manager_open_serialization(m, &f);
1062 if (r < 0) {
35b8ca3a 1063 log_error("Failed to create serialization file: %s", strerror(-r));
a16e1123
LP		 1064 goto fail;
1065 }
1066
6b78f9b4
LP		 1067 fds = fdset_new();
1068 if (!fds) {
a16e1123
LP		 1069 r = -ENOMEM;
1070 log_error("Failed to allocate fd set: %s", strerror(-r));
1071 goto fail;
1072 }
1073
b3680f49 1074 r = manager_serialize(m, f, fds, switching_root);
6b78f9b4 1075 if (r < 0) {
a16e1123
LP		 1076 log_error("Failed to serialize state: %s", strerror(-r));
1077 goto fail;
1078 }
1079
1080 if (fseeko(f, 0, SEEK_SET) < 0) {
1081 log_error("Failed to rewind serialization fd: %m");
1082 goto fail;
1083 }
1084
6b78f9b4
LP		 1085 r = fd_cloexec(fileno(f), false);
1086 if (r < 0) {
a16e1123
LP		 1087 log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
1088 goto fail;
1089 }
1090
6b78f9b4
LP		 1091 r = fdset_cloexec(fds, false);
1092 if (r < 0) {
a16e1123
LP		 1093 log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r));
1094 goto fail;
1095 }
1096
1097 *_f = f;
1098 *_fds = fds;
1099
1100 return 0;
1101
1102fail:
1103 fdset_free(fds);
1104
1105 if (f)
1106 fclose(f);
1107
1108 return r;
1109}
1110
4096d6f5
LP		 1111static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
1112 struct rlimit nl;
1113 int r;
1114
1115 assert(saved_rlimit);
1116
1117 /* Save the original RLIMIT_NOFILE so that we can reset it
1118 * later when transitioning from the initrd to the main
1119 * systemd or suchlike. */
1120 if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0) {
1121 log_error("Reading RLIMIT_NOFILE failed: %m");
1122 return -errno;
1123 }
1124
1125 /* Make sure forked processes get the default kernel setting */
1126 if (!arg_default_rlimit[RLIMIT_NOFILE]) {
1127 struct rlimit *rl;
1128
1129 rl = newdup(struct rlimit, saved_rlimit, 1);
1130 if (!rl)
1131 return log_oom();
1132
1133 arg_default_rlimit[RLIMIT_NOFILE] = rl;
1134 }
1135
1136 /* Bump up the resource limit for ourselves substantially */
1137 nl.rlim_cur = nl.rlim_max = 64*1024;
1138 r = setrlimit_closest(RLIMIT_NOFILE, &nl);
1139 if (r < 0) {
1140 log_error("Setting RLIMIT_NOFILE failed: %s", strerror(-r));
1141 return r;
1142 }
1143
1144 return 0;
1145}
1146
e9ddabc2
LP		 1147static struct dual_timestamp* parse_initrd_timestamp(struct dual_timestamp *t) {
1148 const char *e;
1149 unsigned long long a, b;
1150
1151 assert(t);
1152
966a5d37
LP		 1153 e = getenv("RD_TIMESTAMP");
1154 if (!e)
e9ddabc2
LP		 1155 return NULL;
1156
1157 if (sscanf(e, "%llu %llu", &a, &b) != 2)
1158 return NULL;
1159
1160 t->realtime = (usec_t) a;
1161 t->monotonic = (usec_t) b;
1162
1163 return t;
1164}
1165
6ee5bbf8
LP		 1166static void test_mtab(void) {
1167 char *p;
1168
80758717
LP		 1169 /* Check that /etc/mtab is a symlink */
1170
6ee5bbf8
LP		 1171 if (readlink_malloc("/etc/mtab", &p) >= 0) {
1172 bool b;
1173
ed86ebc4 1174 b = streq(p, "/proc/self/mounts") || streq(p, "/proc/mounts");
6ee5bbf8
LP		 1175 free(p);
1176
1177 if (b)
1178 return;
1179 }
1180
80758717
LP		 1181 log_warning("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
1182 "This is not supported anymore. "
1183 "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
1184}
1185
1186static void test_usr(void) {
80758717 1187
ed1c99fc 1188 /* Check that /usr is not a separate fs */
80758717 1189
871c44a7
LP		 1190 if (dir_is_empty("/usr") <= 0)
1191 return;
1192
2376ce13 1193 log_warning("/usr appears to be on its own filesytem and is not already mounted. This is not a supported setup. "
871c44a7
LP		 1194 "Some things will probably break (sometimes even silently) in mysterious ways. "
1195 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1196}
1197
1198static void test_cgroups(void) {
1199
1200 if (access("/proc/cgroups", F_OK) >= 0)
1201 return;
1202
1203 log_warning("CONFIG_CGROUPS was not set when your kernel was compiled. "
1204 "Systems without control groups are not supported. "
1205 "We will now sleep for 10s, and then continue boot-up. "
1206 "Expect breakage and please do not file bugs. "
966a5d37
LP		 1207 "Instead fix your kernel and enable CONFIG_CGROUPS. "
1208 "Consult http://0pointer.de/blog/projects/cgroups-vs-cgroups.html for more information.");
871c44a7
LP		 1209
1210 sleep(10);
6ee5bbf8
LP		 1211}
1212
a07fdfa3
LP		 1213static int initialize_join_controllers(void) {
1214 /* By default, mount "cpu" + "cpuacct" together, and "net_cls"
1215 * + "net_prio". We'd like to add "cpuset" to the mix, but
1216 * "cpuset" does't really work for groups with no initialized
1217 * attributes. */
1218
1219 arg_join_controllers = new(char**, 3);
1220 if (!arg_join_controllers)
1221 return -ENOMEM;
1222
1223 arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL);
a07fdfa3 1224 arg_join_controllers[1] = strv_new("net_cls", "net_prio", NULL);
a6b26d90
ZJS		 1225 arg_join_controllers[2] = NULL;
1226
1227 if (!arg_join_controllers[0] || !arg_join_controllers[1]) {
1228 free_join_controllers();
a07fdfa3 1229 return -ENOMEM;
a6b26d90 1230 }
a07fdfa3 1231
a07fdfa3
LP		 1232 return 0;
1233}
1234
60918275
LP		 1235int main(int argc, char *argv[]) {
1236 Manager *m = NULL;
22f4096c 1237 int r, retval = EXIT_FAILURE;
9d76d730
LP		 1238 usec_t before_startup, after_startup;
1239 char timespan[FORMAT_TIMESPAN_MAX];
a16e1123
LP		 1240 FDSet *fds = NULL;
1241 bool reexecute = false;
b9080b03 1242 const char *shutdown_verb = NULL;
e9ddabc2 1243 dual_timestamp initrd_timestamp = { 0ULL, 0ULL };
c3a170f3
HH		 1244 dual_timestamp userspace_timestamp = { 0ULL, 0ULL };
1245 dual_timestamp kernel_timestamp = { 0ULL, 0ULL };
5d6b1584 1246 static char systemd[] = "systemd";
2660882b 1247 bool skip_setup = false;
0b3325e7
LP		 1248 int j;
1249 bool loaded_policy = false;
e96d6be7 1250 bool arm_reboot_watchdog = false;
bf4df7c3 1251 bool queue_default_job = false;
41669317 1252 char *switch_root_dir = NULL, *switch_root_init = NULL;
4096d6f5 1253 static struct rlimit saved_rlimit_nofile = { 0, 0 };
27b14a22 1254
058dc6f3 1255#ifdef HAVE_SYSV_COMPAT
2cb1a60d 1256 if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
35b8ca3a 1257 /* This is compatibility support for SysV, where
2cb1a60d
LP		 1258 * calling init as a user is identical to telinit. */
1259
1260 errno = -ENOENT;
1261 execv(SYSTEMCTL_BINARY_PATH, argv);
1262 log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
1263 return 1;
1264 }
058dc6f3 1265#endif
2cb1a60d 1266
c3a170f3
HH		 1267 dual_timestamp_from_monotonic(&kernel_timestamp, 0);
1268 dual_timestamp_get(&userspace_timestamp);
1269
0b3325e7
LP		 1270 /* Determine if this is a reexecution or normal bootup. We do
1271 * the full command line parsing much later, so let's just
1272 * have a quick peek here. */
db813c2a
LP		 1273 if (strv_find(argv+1, "--deserialize"))
1274 skip_setup = true;
0b3325e7 1275
2660882b
LP		 1276 /* If we have switched root, do all the special setup
1277 * things */
db813c2a
LP		 1278 if (strv_find(argv+1, "--switched-root"))
1279 skip_setup = false;
d03bc1b8 1280
f3b6a3ed
LP		 1281 /* If we get started via the /sbin/init symlink then we are
1282 called 'init'. After a subsequent reexecution we are then
1283 called 'systemd'. That is confusing, hence let's call us
1284 systemd right-away. */
f3b6a3ed
LP		 1285 program_invocation_short_name = systemd;
1286 prctl(PR_SET_NAME, systemd);
5d6b1584 1287
9a0e6896
LP		 1288 saved_argv = argv;
1289 saved_argc = argc;
f3b6a3ed 1290
2cc59dbf 1291 log_show_color(isatty(STDERR_FILENO) > 0);
bbe63281 1292
a866073d 1293 if (getpid() == 1 && detect_container(NULL) <= 0) {
4f8d551f 1294
a866073d 1295 /* Running outside of a container as PID 1 */
67445f4e 1296 arg_running_as = SYSTEMD_SYSTEM;
a866073d
LP		 1297 make_null_stdio();
1298 log_set_target(LOG_TARGET_KMSG);
1299 log_open();
1300
c3ba6250
HH		 1301 if (in_initrd()) {
1302 char *rd_timestamp = NULL;
1303
c3a170f3 1304 initrd_timestamp = userspace_timestamp;
c3ba6250
HH		 1305 asprintf(&rd_timestamp, "%llu %llu",
1306 (unsigned long long) initrd_timestamp.realtime,
1307 (unsigned long long) initrd_timestamp.monotonic);
1308 if (rd_timestamp) {
1309 setenv("RD_TIMESTAMP", rd_timestamp, 1);
1310 free(rd_timestamp);
1311 }
1312 }
1313
2660882b 1314 if (!skip_setup) {
8f838d8a 1315 mount_setup_early();
0b3325e7
LP		 1316 if (selinux_setup(&loaded_policy) < 0)
1317 goto finish;
81611586
RS		 1318 if (ima_setup() < 0)
1319 goto finish;
ffbd2c4d
NC		 1320 if (smack_setup() < 0)
1321 goto finish;
81611586 1322 }
0b3325e7 1323
e9a5ef7c 1324 if (label_init(NULL) < 0)
0ff4cdd9 1325 goto finish;
7948c4df 1326
72edcff5 1327 if (!skip_setup) {
0b3325e7
LP		 1328 if (hwclock_is_localtime() > 0) {
1329 int min;
7948c4df 1330
72edcff5
KS		 1331 /* The first-time call to settimeofday() does a time warp in the kernel */
1332 r = hwclock_set_timezone(&min);
0b3325e7
LP		 1333 if (r < 0)
1334 log_error("Failed to apply local time delta, ignoring: %s", strerror(-r));
1335 else
1336 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
19e65613
KS		 1337 } else if (!in_initrd()) {
1338 /*
1339 * Do dummy first-time call to seal the kernel's time warp magic
1340 *
1341 * Do not call this this from inside the initrd. The initrd might not
1342 * carry /etc/adjtime with LOCAL, but the real system could be set up
1343 * that way. In such case, we need to delay the time-warp or the sealing
1344 * until we reach the real system.
1345 */
72edcff5 1346 hwclock_reset_timezone();
871e5809 1347
e9dd9f95 1348 /* Tell the kernel our timezone */
72edcff5
KS		 1349 r = hwclock_set_timezone(NULL);
1350 if (r < 0)
e9dd9f95 1351 log_error("Failed to set the kernel's timezone, ignoring: %s", strerror(-r));
72edcff5
KS		 1352 }
1353 }
a866073d
LP		 1354
1355 /* Set the default for later on, but don't actually
1356 * open the logs like this for now. Note that if we
1357 * are transitioning from the initrd there might still
1358 * be journal fd open, and we shouldn't attempt
1359 * opening that before we parsed /proc/cmdline which
1360 * might redirect output elsewhere. */
1361 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1362
1363 } else if (getpid() == 1) {
a866073d 1364 /* Running inside a container, as PID 1 */
67445f4e 1365 arg_running_as = SYSTEMD_SYSTEM;
a866073d
LP		 1366 log_set_target(LOG_TARGET_CONSOLE);
1367 log_open();
1368
1369 /* For the later on, see above... */
1370 log_set_target(LOG_TARGET_JOURNAL);
1371
c3a170f3
HH		 1372 /* clear the kernel timestamp,
1373 * because we are in a container */
1374 kernel_timestamp.monotonic = 0ULL;
1375 kernel_timestamp.realtime = 0ULL;
a866073d 1376
c3a170f3 1377 } else {
a866073d 1378 /* Running as user instance */
67445f4e 1379 arg_running_as = SYSTEMD_USER;
eeecf6e6 1380 log_set_target(LOG_TARGET_AUTO);
871e5809 1381 log_open();
c3a170f3
HH		 1382
1383 /* clear the kernel timestamp,
1384 * because we are not PID 1 */
1385 kernel_timestamp.monotonic = 0ULL;
1386 kernel_timestamp.realtime = 0ULL;
bbe63281 1387 }
a5dab5ce 1388
0c85a4f3 1389 /* Initialize default unit */
6afa301b
LP		 1390 r = set_default_unit(SPECIAL_DEFAULT_TARGET);
1391 if (r < 0) {
14212119 1392 log_error("Failed to set default unit %s: %s", SPECIAL_DEFAULT_TARGET, strerror(-r));
f170852a 1393 goto finish;
14212119 1394 }
60918275 1395
a07fdfa3
LP		 1396 r = initialize_join_controllers();
1397 if (r < 0)
0c85a4f3
LP		 1398 goto finish;
1399
f170852a
LP		 1400 /* Mount /proc, /sys and friends, so that /proc/cmdline and
1401 * /proc/$PID/fd is available. */
c1dae1b3 1402 if (getpid() == 1) {
0c85a4f3
LP		 1403 r = mount_setup(loaded_policy);
1404 if (r < 0)
8efe3c01 1405 goto finish;
0c85a4f3 1406 }
4ade7963
LP		 1407
1408 /* Reset all signal handlers. */
1409 assert_se(reset_all_signal_handlers() == 0);
1410
9a34ec5f 1411 ignore_signals(SIGNALS_IGNORE, -1);
078e4539 1412
487393e9
LP		 1413 if (parse_config_file() < 0)
1414 goto finish;
1415
67445f4e 1416 if (arg_running_as == SYSTEMD_SYSTEM)
a5dab5ce
LP		 1417 if (parse_proc_cmdline() < 0)
1418 goto finish;
f170852a
LP		 1419
1420 log_parse_environment();
1421
1422 if (parse_argv(argc, argv) < 0)
1423 goto finish;
1424
6bae23a0
TB		 1425 if (arg_action == ACTION_TEST &&
1426 geteuid() == 0) {
b5c6cf87
LP		 1427 log_error("Don't run test mode as root.");
1428 goto finish;
1429 }
1430
6bae23a0
TB		 1431 if (arg_running_as == SYSTEMD_USER &&
1432 arg_action == ACTION_RUN &&
1433 sd_booted() <= 0) {
1434 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
1435 goto finish;
1436 }
1437
67445f4e 1438 if (arg_running_as == SYSTEMD_SYSTEM &&
fe783b03
LP		 1439 arg_action == ACTION_RUN &&
1440 running_in_chroot() > 0) {
1441 log_error("Cannot be run in a chroot() environment.");
1442 goto finish;
1443 }
1444
fa0f4d8a 1445 if (arg_action == ACTION_HELP) {
f170852a
LP		 1446 retval = help();
1447 goto finish;
9ba0bc4e
ZJS		 1448 } else if (arg_action == ACTION_VERSION) {
1449 retval = version();
1450 goto finish;
fa0f4d8a 1451 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
e537352b 1452 unit_dump_config_items(stdout);
22f4096c 1453 retval = EXIT_SUCCESS;
e537352b 1454 goto finish;
fa0f4d8a 1455 } else if (arg_action == ACTION_DONE) {
22f4096c 1456 retval = EXIT_SUCCESS;
4288f619 1457 goto finish;
f170852a
LP		 1458 }
1459
fa0f4d8a 1460 assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST);
f170852a 1461
871e5809
LP		 1462 /* Close logging fds, in order not to confuse fdset below */
1463 log_close();
1464
a16e1123 1465 /* Remember open file descriptors for later deserialization */
01e10de3
LP		 1466 r = fdset_new_fill(&fds);
1467 if (r < 0) {
1468 log_error("Failed to allocate fd set: %s", strerror(-r));
1469 goto finish;
1470 } else
1471 fdset_cloexec(fds, true);
a16e1123 1472
01e10de3 1473 if (serialization)
a16e1123 1474 assert_se(fdset_remove(fds, fileno(serialization)) >= 0);
a16e1123 1475
09082a94 1476 /* Set up PATH unless it is already set */
e537352b 1477 setenv("PATH",
2c6db6fb 1478#ifdef HAVE_SPLIT_USR
e537352b 1479 "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
2c6db6fb
LP		 1480#else
1481 "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin",
1482#endif
67445f4e 1483 arg_running_as == SYSTEMD_SYSTEM);
09082a94 1484
67445f4e 1485 if (arg_running_as == SYSTEMD_SYSTEM) {
71ecc858
LP		 1486 /* Parse the data passed to us. We leave this
1487 * variables set, but the manager later on will not
1488 * pass them on to our children. */
2660882b 1489 if (!in_initrd())
c3ba6250 1490 parse_initrd_timestamp(&initrd_timestamp);
e9ddabc2
LP		 1491
1492 /* Unset some environment variables passed in from the
1493 * kernel that don't really make sense for us. */
39439087
LP		 1494 unsetenv("HOME");
1495 unsetenv("TERM");
b770165a 1496
9543ad16
LP		 1497 /* When we are invoked by a shell, these might be set,
1498 * but make little sense to pass on */
1499 unsetenv("PWD");
1500 unsetenv("SHLVL");
1501 unsetenv("_");
1502
2660882b 1503 /* When we are invoked by a chroot-like tool such as
9f28b98e
LP		 1504 * nspawn, these might be set, but make little sense
1505 * to pass on */
1506 unsetenv("USER");
1507 unsetenv("LOGNAME");
1508
01e10de3
LP		 1509 /* We suppress the socket activation env vars, as
1510 * we'll try to match *any* open fd to units if
1511 * possible. */
1512 unsetenv("LISTEN_FDS");
1513 unsetenv("LISTEN_PID");
1514
b770165a
LP		 1515 /* All other variables are left as is, so that clients
1516 * can still read them via /proc/1/environ */
39439087 1517 }
1104f3c1 1518
f170852a
LP		 1519 /* Move out of the way, so that we won't block unmounts */
1520 assert_se(chdir("/") == 0);
1521
67445f4e 1522 if (arg_running_as == SYSTEMD_SYSTEM) {
80876c20
LP		 1523 /* Become a session leader if we aren't one yet. */
1524 setsid();
4ade7963 1525
80876c20
LP		 1526 /* Disable the umask logic */
1527 umask(0);
1528 }
1529
843d2643
LP		 1530 /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */
1531 dbus_connection_set_change_sigpipe(FALSE);
1532
2146621b
LP		 1533 /* Reset the console, but only if this is really init and we
1534 * are freshly booted */
67445f4e 1535 if (arg_running_as == SYSTEMD_SYSTEM && arg_action == ACTION_RUN)
2660882b 1536 console_setup(getpid() == 1 && !skip_setup);
4ade7963 1537
18149b9f 1538 /* Open the logging devices, if possible and necessary */
843d2643 1539 log_open();
4ade7963 1540
5373d602
LP		 1541 /* Make sure we leave a core dump without panicing the
1542 * kernel. */
ab422445 1543 if (getpid() == 1) {
4fc935ca 1544 install_crash_handler();
97c4f35c 1545
0c85a4f3
LP		 1546 r = mount_cgroup_controllers(arg_join_controllers);
1547 if (r < 0)
1548 goto finish;
1549 }
1550
67445f4e 1551 if (arg_running_as == SYSTEMD_SYSTEM) {
c20f5ac7
LP		 1552 const char *virtualization = NULL;
1553
bc270841 1554 log_info(PACKAGE_STRING " running in system mode. (" SYSTEMD_FEATURES ")");
c20f5ac7
LP		 1555
1556 detect_virtualization(&virtualization);
1557 if (virtualization)
1558 log_info("Detected virtualization '%s'.", virtualization);
1559
26a1efdf
LP		 1560 if (in_initrd())
1561 log_info("Running in initial RAM disk.");
1562
c20f5ac7 1563 } else
bc270841 1564 log_debug(PACKAGE_STRING " running in user mode. (" SYSTEMD_FEATURES ")");
a5dab5ce 1565
67445f4e 1566 if (arg_running_as == SYSTEMD_SYSTEM && !skip_setup) {
72bca11b
LP		 1567 locale_setup();
1568
6faa1114 1569 if (arg_show_status || plymouth_running())
888c6216
LP		 1570 status_welcome();
1571
e3043162 1572#ifdef HAVE_KMOD
888c6216 1573 kmod_setup();
e3043162 1574#endif
888c6216 1575 hostname_setup();
d7ccca2e 1576 machine_id_setup();
888c6216 1577 loopback_setup();
490aed58 1578
6ee5bbf8 1579 test_mtab();
80758717 1580 test_usr();
871c44a7 1581 test_cgroups();
af5bc85d 1582 }
302e8c4c 1583
67445f4e 1584 if (arg_running_as == SYSTEMD_SYSTEM && arg_runtime_watchdog > 0)
e96d6be7
LP		 1585 watchdog_set_timeout(&arg_runtime_watchdog);
1586
aa0f64ac
LP		 1587 if (arg_timer_slack_nsec != (nsec_t) -1)
1588 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
1589 log_error("Failed to adjust timer slack: %m");
1590
ec8927ca
LP		 1591 if (arg_capability_bounding_set_drop) {
1592 r = capability_bounding_set_drop(arg_capability_bounding_set_drop, true);
1593 if (r < 0) {
1594 log_error("Failed to drop capability bounding set: %s", strerror(-r));
1595 goto finish;
1596 }
939b8f14
LP		 1597 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop);
1598 if (r < 0) {
1599 log_error("Failed to drop capability bounding set of usermode helpers: %s", strerror(-r));
1600 goto finish;
1601 }
ec8927ca
LP		 1602 }
1603
67445f4e 1604 if (arg_running_as == SYSTEMD_USER) {
d4447f4d 1605 /* Become reaper of our children */
8b8ffe68
LP		 1606 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0) {
1607 log_warning("Failed to make us a subreaper: %m");
1608 if (errno == EINVAL)
ddfa5101 1609 log_info("Perhaps the kernel version is too old (< 3.4?)");
8b8ffe68 1610 }
d4447f4d
AK		 1611 }
1612
67445f4e 1613 if (arg_running_as == SYSTEMD_SYSTEM)
4096d6f5
LP		 1614 bump_rlimit_nofile(&saved_rlimit_nofile);
1615
6fa48533 1616 r = manager_new(arg_running_as, !!serialization, &m);
e96d6be7 1617 if (r < 0) {
8e274523 1618 log_error("Failed to allocate manager object: %s", strerror(-r));
60918275
LP		 1619 goto finish;
1620 }
1621
9e58ff9c 1622 m->confirm_spawn = arg_confirm_spawn;
0a494f1f
LP		 1623 m->default_std_output = arg_default_std_output;
1624 m->default_std_error = arg_default_std_error;
e96d6be7
LP		 1625 m->runtime_watchdog = arg_runtime_watchdog;
1626 m->shutdown_watchdog = arg_shutdown_watchdog;
c3a170f3
HH		 1627 m->userspace_timestamp = userspace_timestamp;
1628 m->kernel_timestamp = kernel_timestamp;
c3a170f3 1629 m->initrd_timestamp = initrd_timestamp;
9e58ff9c 1630
c93ff2e9
FC		 1631 manager_set_default_rlimits(m, arg_default_rlimit);
1632
97d0e5f8
UTL		 1633 if (arg_default_environment)
1634 manager_set_default_environment(m, arg_default_environment);
1635
27d340c7
LP		 1636 manager_set_show_status(m, arg_show_status);
1637
bf4df7c3
LP		 1638 /* Remember whether we should queue the default job */
1639 queue_default_job = !serialization || arg_switched_root;
1640
9d76d730
LP		 1641 before_startup = now(CLOCK_MONOTONIC);
1642
e96d6be7
LP		 1643 r = manager_startup(m, serialization, fds);
1644 if (r < 0)
6e2ef85b 1645 log_error("Failed to fully start up daemon: %s", strerror(-r));
a16e1123 1646
bf4df7c3
LP		 1647 /* This will close all file descriptors that were opened, but
1648 * not claimed by any unit. */
01e10de3 1649 fdset_free(fds);
f50e0a01 1650
a16e1123
LP		 1651 if (serialization) {
1652 fclose(serialization);
1653 serialization = NULL;
bf4df7c3
LP		 1654 }
1655
1656 if (queue_default_job) {
398ef8ba 1657 DBusError error;
1c27d3f3 1658 Unit *target = NULL;
bacbccb7 1659 Job *default_unit_job;
398ef8ba
LP		 1660
1661 dbus_error_init(&error);
1662
fa0f4d8a 1663 log_debug("Activating default unit: %s", arg_default_unit);
a16e1123 1664
e96d6be7
LP		 1665 r = manager_load_unit(m, arg_default_unit, NULL, &error, &target);
1666 if (r < 0) {
398ef8ba
LP		 1667 log_error("Failed to load default target: %s", bus_error(&error, r));
1668 dbus_error_free(&error);
c2756a68 1669 } else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND)
ac155bb8
MS		 1670 log_error("Failed to load default target: %s", strerror(-target->load_error));
1671 else if (target->load_state == UNIT_MASKED)
6daf4f90 1672 log_error("Default target masked.");
27b14a22 1673
ac155bb8 1674 if (!target || target->load_state != UNIT_LOADED) {
a16e1123 1675 log_info("Trying to load rescue target...");
1c27d3f3 1676
e96d6be7
LP		 1677 r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target);
1678 if (r < 0) {
398ef8ba
LP		 1679 log_error("Failed to load rescue target: %s", bus_error(&error, r));
1680 dbus_error_free(&error);
a16e1123 1681 goto finish;
11ddb6f4 1682 } else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND) {
ac155bb8 1683 log_error("Failed to load rescue target: %s", strerror(-target->load_error));
1c27d3f3 1684 goto finish;
ac155bb8 1685 } else if (target->load_state == UNIT_MASKED) {
6daf4f90 1686 log_error("Rescue target masked.");
00dc5d76 1687 goto finish;
a16e1123
LP		 1688 }
1689 }
37d88da7 1690
ac155bb8 1691 assert(target->load_state == UNIT_LOADED);
00dc5d76 1692
fa0f4d8a 1693 if (arg_action == ACTION_TEST) {
40d50879 1694 printf("-> By units:\n");
a16e1123
LP		 1695 manager_dump_units(m, stdout, "\t");
1696 }
1697
95f1b47d 1698 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, false, &error, &default_unit_job);
ab17a050 1699 if (r == -EPERM) {
cd8f53ab 1700 log_debug("Default target could not be isolated, starting instead: %s", bus_error(&error, r));
ab17a050
LP		 1701 dbus_error_free(&error);
1702
1703 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, &default_unit_job);
1704 if (r < 0) {
1705 log_error("Failed to start default target: %s", bus_error(&error, r));
1706 dbus_error_free(&error);
1707 goto finish;
1708 }
1709 } else if (r < 0) {
1710 log_error("Failed to isolate default target: %s", bus_error(&error, r));
398ef8ba 1711 dbus_error_free(&error);
37d88da7
LP		 1712 goto finish;
1713 }
ab17a050 1714
bacbccb7 1715 m->default_unit_job_id = default_unit_job->id;
60918275 1716
07672f49
LP		 1717 after_startup = now(CLOCK_MONOTONIC);
1718 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
1719 "Loaded units and determined initial transaction in %s.",
2fa4092c 1720 format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 0));
07672f49 1721
fa0f4d8a 1722 if (arg_action == ACTION_TEST) {
40d50879 1723 printf("-> By jobs:\n");
a16e1123 1724 manager_dump_jobs(m, stdout, "\t");
22f4096c 1725 retval = EXIT_SUCCESS;
a16e1123
LP		 1726 goto finish;
1727 }
e965d56d 1728 }
d46de8a1 1729
a16e1123 1730 for (;;) {
e96d6be7
LP		 1731 r = manager_loop(m);
1732 if (r < 0) {
a16e1123
LP		 1733 log_error("Failed to run mainloop: %s", strerror(-r));
1734 goto finish;
1735 }
11dd41ce 1736
a16e1123 1737 switch (m->exit_code) {
e965d56d 1738
a16e1123 1739 case MANAGER_EXIT:
22f4096c 1740 retval = EXIT_SUCCESS;
a16e1123
LP		 1741 log_debug("Exit.");
1742 goto finish;
e965d56d 1743
a16e1123 1744 case MANAGER_RELOAD:
e015090f 1745 log_info("Reloading.");
e96d6be7
LP		 1746 r = manager_reload(m);
1747 if (r < 0)
a16e1123
LP		 1748 log_error("Failed to reload: %s", strerror(-r));
1749 break;
cea8e32e 1750
a16e1123 1751 case MANAGER_REEXECUTE:
664f88a7 1752
b3680f49 1753 if (prepare_reexecute(m, &serialization, &fds, false) < 0)
a16e1123 1754 goto finish;
60918275 1755
a16e1123 1756 reexecute = true;
e015090f 1757 log_notice("Reexecuting.");
a16e1123
LP		 1758 goto finish;
1759
664f88a7
LP		 1760 case MANAGER_SWITCH_ROOT:
1761 /* Steal the switch root parameters */
41669317 1762 switch_root_dir = m->switch_root;
664f88a7
LP		 1763 switch_root_init = m->switch_root_init;
1764 m->switch_root = m->switch_root_init = NULL;
1765
1766 if (!switch_root_init)
b3680f49 1767 if (prepare_reexecute(m, &serialization, &fds, true) < 0)
664f88a7
LP		 1768 goto finish;
1769
1770 reexecute = true;
1771 log_notice("Switching root.");
1772 goto finish;
1773
b9080b03
FF		 1774 case MANAGER_REBOOT:
1775 case MANAGER_POWEROFF:
1776 case MANAGER_HALT:
1777 case MANAGER_KEXEC: {
1778 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1779 [MANAGER_REBOOT] = "reboot",
1780 [MANAGER_POWEROFF] = "poweroff",
1781 [MANAGER_HALT] = "halt",
1782 [MANAGER_KEXEC] = "kexec"
1783 };
1784
1785 assert_se(shutdown_verb = table[m->exit_code]);
e96d6be7 1786 arm_reboot_watchdog = m->exit_code == MANAGER_REBOOT;
b9080b03
FF		 1787
1788 log_notice("Shutting down.");
1789 goto finish;
1790 }
1791
a16e1123
LP		 1792 default:
1793 assert_not_reached("Unknown exit code.");
1794 }
1795 }
f170852a 1796
60918275
LP		 1797finish:
1798 if (m)
1799 manager_free(m);
1800
c93ff2e9 1801 for (j = 0; j < RLIMIT_NLIMITS; j++)
4096d6f5 1802 free(arg_default_rlimit[j]);
c93ff2e9 1803
fa0f4d8a 1804 free(arg_default_unit);
0c85a4f3 1805 free_join_controllers();
b9cd2ec1 1806
ea430986 1807 dbus_shutdown();
b2bb3dbe
LP		 1808 label_finish();
1809
a16e1123 1810 if (reexecute) {
664f88a7 1811 const char **args;
e564a982 1812 unsigned i, args_size;
a16e1123 1813
664f88a7
LP		 1814 /* Close and disarm the watchdog, so that the new
1815 * instance can reinitialize it, but doesn't get
1816 * rebooted while we do that */
1817 watchdog_close(true);
a16e1123 1818
4096d6f5
LP		 1819 /* Reset the RLIMIT_NOFILE to the kernel default, so
1820 * that the new systemd can pass the kernel default to
1821 * its child processes */
1822 if (saved_rlimit_nofile.rlim_cur > 0)
1823 setrlimit(RLIMIT_NOFILE, &saved_rlimit_nofile);
1824
41669317 1825 if (switch_root_dir) {
cee530bb
LP		 1826 /* Kill all remaining processes from the
1827 * initrd, but don't wait for them, so that we
1828 * can handle the SIGCHLD for them after
1829 * deserializing. */
1830 broadcast_signal(SIGTERM, false);
bd3fa1d2
LP		 1831
1832 /* And switch root */
41669317
LP		 1833 r = switch_root(switch_root_dir);
1834 if (r < 0)
1835 log_error("Failed to switch root, ignoring: %s", strerror(-r));
1836 }
a16e1123 1837
d03bc1b8 1838 args_size = MAX(6, argc+1);
e564a982 1839 args = newa(const char*, args_size);
a16e1123 1840
664f88a7
LP		 1841 if (!switch_root_init) {
1842 char sfd[16];
a16e1123 1843
664f88a7
LP		 1844 /* First try to spawn ourselves with the right
1845 * path, and with full serialization. We do
1846 * this only if the user didn't specify an
1847 * explicit init to spawn. */
edb9aaa8 1848
664f88a7
LP		 1849 assert(serialization);
1850 assert(fds);
edb9aaa8 1851
664f88a7
LP		 1852 snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
1853 char_array_0(sfd);
edb9aaa8 1854
664f88a7
LP		 1855 i = 0;
1856 args[i++] = SYSTEMD_BINARY_PATH;
41669317 1857 if (switch_root_dir)
2660882b 1858 args[i++] = "--switched-root";
67445f4e 1859 args[i++] = arg_running_as == SYSTEMD_SYSTEM ? "--system" : "--user";
664f88a7
LP		 1860 args[i++] = "--deserialize";
1861 args[i++] = sfd;
1862 args[i++] = NULL;
edb9aaa8 1863
e564a982 1864 assert(i <= args_size);
664f88a7
LP		 1865 execv(args[0], (char* const*) args);
1866 }
6e98720f 1867
664f88a7
LP		 1868 /* Try the fallback, if there is any, without any
1869 * serialization. We pass the original argv[] and
1870 * envp[]. (Well, modulo the ordering changes due to
1871 * getopt() in argv[], and some cleanups in envp[],
1872 * but let's hope that doesn't matter.) */
a16e1123 1873
b8f83232 1874 if (serialization) {
664f88a7 1875 fclose(serialization);
b8f83232
LP		 1876 serialization = NULL;
1877 }
a16e1123 1878
b8f83232 1879 if (fds) {
664f88a7 1880 fdset_free(fds);
b8f83232
LP		 1881 fds = NULL;
1882 }
a16e1123 1883
a504223d
HH		 1884 /* Reopen the console */
1885 make_console_stdio();
1886
b8f83232 1887 for (j = 1, i = 1; j < argc; j++)
664f88a7 1888 args[i++] = argv[j];
a16e1123 1889 args[i++] = NULL;
e564a982 1890 assert(i <= args_size);
b8f83232
LP		 1891
1892 if (switch_root_init) {
1893 args[0] = switch_root_init;
1894 execv(args[0], (char* const*) args);
1895 log_warning("Failed to execute configured init, trying fallback: %m");
1896 }
1897
1898 args[0] = "/sbin/init";
a16e1123
LP		 1899 execv(args[0], (char* const*) args);
1900
745e2fb7
KS		 1901 if (errno == ENOENT) {
1902 log_warning("No /sbin/init, trying fallback");
b8f83232 1903
745e2fb7
KS		 1904 args[0] = "/bin/sh";
1905 args[1] = NULL;
1906 execv(args[0], (char* const*) args);
1907 log_error("Failed to execute /bin/sh, giving up: %m");
1908 } else
1909 log_warning("Failed to execute /sbin/init, giving up: %m");
a16e1123
LP		 1910 }
1911
1912 if (serialization)
1913 fclose(serialization);
1914
1915 if (fds)
1916 fdset_free(fds);
1917
b9080b03
FF		 1918 if (shutdown_verb) {
1919 const char * command_line[] = {
1920 SYSTEMD_SHUTDOWN_BINARY_PATH,
1921 shutdown_verb,
1922 NULL
1923 };
d18f337c 1924 char **env_block;
b9080b03 1925
e96d6be7 1926 if (arm_reboot_watchdog && arg_shutdown_watchdog > 0) {
d18f337c
LP		 1927 char e[32];
1928
e96d6be7
LP		 1929 /* If we reboot let's set the shutdown
1930 * watchdog and tell the shutdown binary to
1931 * repeatedly ping it */
1932 watchdog_set_timeout(&arg_shutdown_watchdog);
1933 watchdog_close(false);
1934
1935 /* Tell the binary how often to ping */
1936 snprintf(e, sizeof(e), "WATCHDOG_USEC=%llu", (unsigned long long) arg_shutdown_watchdog);
1937 char_array_0(e);
d18f337c
LP		 1938
1939 env_block = strv_append(environ, e);
1940 } else {
1941 env_block = strv_copy(environ);
e96d6be7 1942 watchdog_close(true);
d18f337c 1943 }
e96d6be7 1944
ec26be51 1945 /* avoid the creation of new processes forked by the kernel; at this
ad929bcc 1946 * point, we will not listen to the signals anyway */
ec26be51 1947 cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
ad929bcc 1948
d18f337c
LP		 1949 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
1950 free(env_block);
b9080b03
FF		 1951 log_error("Failed to execute shutdown binary, freezing: %m");
1952 }
1953
c3b3c274
LP		 1954 if (getpid() == 1)
1955 freeze();
1956
60918275
LP		 1957 return retval;
1958}
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