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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
60918275
LP		 22#include <stdio.h>
23#include <errno.h>
24#include <string.h>
16354eff 25#include <unistd.h>
4ade7963
LP		 26#include <sys/types.h>
27#include <sys/stat.h>
f170852a 28#include <getopt.h>
97c4f35c 29#include <signal.h>
4fc935ca 30#include <sys/wait.h>
80876c20 31#include <fcntl.h>
f3b6a3ed 32#include <sys/prctl.h>
664f88a7 33#include <sys/mount.h>
60918275 34
54b434b1
LP		 35#ifdef HAVE_VALGRIND_VALGRIND_H
36#include <valgrind/valgrind.h>
37#endif
b64a3d86
LP		 38#ifdef HAVE_SECCOMP
39#include <seccomp.h>
40#endif
54b434b1 41
718db961
LP		 42#include "sd-daemon.h"
43#include "sd-messages.h"
44#include "sd-bus.h"
60918275 45#include "manager.h"
16354eff 46#include "log.h"
302e8c4c 47#include "load-fragment.h"
a16e1123 48#include "fdset.h"
514f4ef5 49#include "special.h"
487393e9 50#include "conf-parser.h"
ad780f19 51#include "missing.h"
e51bc1a2 52#include "label.h"
b87c2aa6 53#include "pager.h"
302e27c8 54#include "build.h"
06d4c99a 55#include "strv.h"
f6a6225e 56#include "def.h"
b52aae1d 57#include "virt.h"
d9d93745 58#include "architecture.h"
e96d6be7 59#include "watchdog.h"
664f88a7 60#include "path-util.h"
41669317 61#include "switch-root.h"
ec8927ca 62#include "capability.h"
bd3fa1d2 63#include "killall.h"
0c4025d1 64#include "env-util.h"
24efb112 65#include "clock-util.h"
718db961
LP		 66#include "fileio.h"
67#include "dbus-manager.h"
68#include "bus-error.h"
69#include "bus-util.h"
60918275 70
b6e66135
LP		 71#include "mount-setup.h"
72#include "loopback-setup.h"
b6e66135
LP		 73#include "hostname-setup.h"
74#include "machine-id-setup.h"
b6e66135
LP		 75#include "selinux-setup.h"
76#include "ima-setup.h"
ffbd2c4d 77#include "smack-setup.h"
718db961 78#include "kmod-setup.h"
b6e66135 79
f170852a
LP		 80static enum {
81 ACTION_RUN,
e965d56d 82 ACTION_HELP,
9ba0bc4e 83 ACTION_VERSION,
e537352b 84 ACTION_TEST,
4288f619
LP		 85 ACTION_DUMP_CONFIGURATION_ITEMS,
86 ACTION_DONE
fa0f4d8a 87} arg_action = ACTION_RUN;
fa0f4d8a 88static char *arg_default_unit = NULL;
67445f4e 89static SystemdRunningAs arg_running_as = _SYSTEMD_RUNNING_AS_INVALID;
fa0f4d8a
LP		 90static bool arg_dump_core = true;
91static bool arg_crash_shell = false;
92static int arg_crash_chvt = -1;
93static bool arg_confirm_spawn = false;
b6e2f329 94static ShowStatus arg_show_status = _SHOW_STATUS_UNSET;
bf4df7c3 95static bool arg_switched_root = false;
b87c2aa6 96static int arg_no_pager = -1;
0c85a4f3 97static char ***arg_join_controllers = NULL;
706343f4 98static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
0a494f1f 99static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
1f19a534
OS		 100static usec_t arg_default_restart_usec = DEFAULT_RESTART_USEC;
101static usec_t arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC;
102static usec_t arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
3f41e1e5
LN		 103static usec_t arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL;
104static unsigned arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST;
e96d6be7
LP		 105static usec_t arg_runtime_watchdog = 0;
106static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
97d0e5f8 107static char **arg_default_environment = NULL;
517d56b1 108static struct rlimit *arg_default_rlimit[_RLIMIT_MAX] = {};
ec8927ca 109static uint64_t arg_capability_bounding_set_drop = 0;
3a43da28 110static nsec_t arg_timer_slack_nsec = NSEC_INFINITY;
bd8f585b 111static usec_t arg_default_timer_accuracy_usec = 1 * USEC_PER_MINUTE;
d3b1c508
LP		 112static Set* arg_syscall_archs = NULL;
113static FILE* arg_serialization = NULL;
085afe36
LP		 114static bool arg_default_cpu_accounting = false;
115static bool arg_default_blockio_accounting = false;
116static bool arg_default_memory_accounting = false;
4fc935ca 117
d3b1c508 118static void nop_handler(int sig) {}
6f5e3f35 119
b87c2aa6
ZJS		 120static void pager_open_if_enabled(void) {
121
122 if (arg_no_pager <= 0)
123 return;
124
125 pager_open(false);
126}
127
919ce0b7 128noreturn static void crash(int sig) {
97c4f35c 129
abb26902
LP		 130 if (getpid() != 1)
131 /* Pass this on immediately, if this is not PID 1 */
132 raise(sig);
133 else if (!arg_dump_core)
4104970e 134 log_emergency("Caught <%s>, not dumping core.", signal_to_string(sig));
97c4f35c 135 else {
b92bea5d
ZJS		 136 struct sigaction sa = {
137 .sa_handler = nop_handler,
138 .sa_flags = SA_NOCLDSTOP|SA_RESTART,
139 };
97c4f35c
LP		 140 pid_t pid;
141
6f5e3f35 142 /* We want to wait for the core process, hence let's enable SIGCHLD */
abb26902 143 sigaction(SIGCHLD, &sa, NULL);
6f5e3f35 144
e62d8c39
ZJS		 145 pid = fork();
146 if (pid < 0)
4104970e 147 log_emergency("Caught <%s>, cannot fork for core dump: %m", signal_to_string(sig));
97c4f35c
LP		 148
149 else if (pid == 0) {
b92bea5d 150 struct rlimit rl = {};
97c4f35c
LP		 151
152 /* Enable default signal handler for core dump */
153 zero(sa);
154 sa.sa_handler = SIG_DFL;
abb26902 155 sigaction(sig, &sa, NULL);
97c4f35c
LP		 156
157 /* Don't limit the core dump size */
97c4f35c
LP		 158 rl.rlim_cur = RLIM_INFINITY;
159 rl.rlim_max = RLIM_INFINITY;
160 setrlimit(RLIMIT_CORE, &rl);
161
162 /* Just to be sure... */
abb26902 163 chdir("/");
97c4f35c
LP		 164
165 /* Raise the signal again */
166 raise(sig);
167
168 assert_not_reached("We shouldn't be here...");
169 _exit(1);
4fc935ca
LP		 170
171 } else {
8e12a6ae
LP		 172 siginfo_t status;
173 int r;
4fc935ca
LP		 174
175 /* Order things nicely. */
e62d8c39
ZJS		 176 r = wait_for_terminate(pid, &status);
177 if (r < 0)
da927ba9 178 log_emergency_errno(r, "Caught <%s>, waitpid() failed: %m", signal_to_string(sig));
8e12a6ae 179 else if (status.si_code != CLD_DUMPED)
4104970e 180 log_emergency("Caught <%s>, core dump failed.", signal_to_string(sig));
4fc935ca 181 else
4104970e 182 log_emergency("Caught <%s>, dumped core as pid "PID_FMT".", signal_to_string(sig), pid);
97c4f35c
LP		 183 }
184 }
185
fa0f4d8a
LP		 186 if (arg_crash_chvt)
187 chvt(arg_crash_chvt);
601f6a1e 188
fa0f4d8a 189 if (arg_crash_shell) {
b92bea5d
ZJS		 190 struct sigaction sa = {
191 .sa_handler = SIG_IGN,
192 .sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART,
193 };
6f5e3f35 194 pid_t pid;
8c43883a 195
4fc935ca
LP		 196 log_info("Executing crash shell in 10s...");
197 sleep(10);
198
6f5e3f35 199 /* Let the kernel reap children for us */
6f5e3f35 200 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
8c43883a 201
cd3bd60a
LP		 202 pid = fork();
203 if (pid < 0)
4104970e 204 log_emergency("Failed to fork off crash shell: %m");
6f5e3f35 205 else if (pid == 0) {
cd3bd60a 206 make_console_stdio();
6f5e3f35
LP		 207 execl("/bin/sh", "/bin/sh", NULL);
208
4104970e 209 log_emergency("execl() failed: %m");
6f5e3f35
LP		 210 _exit(1);
211 }
c99b188e 212
ccd06097 213 log_info("Successfully spawned crash shell as pid "PID_FMT".", pid);
4fc935ca
LP		 214 }
215
4104970e 216 log_emergency("Freezing execution.");
97c4f35c
LP		 217 freeze();
218}
219
220static void install_crash_handler(void) {
b92bea5d
ZJS		 221 struct sigaction sa = {
222 .sa_handler = crash,
223 .sa_flags = SA_NODEFER,
224 };
97c4f35c 225
1b91d3e8 226 sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
97c4f35c 227}
f170852a 228
56d96fc0
LP		 229static int console_setup(void) {
230 _cleanup_close_ int tty_fd = -1;
231 int r;
80876c20 232
512947d4
MS		 233 tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);
234 if (tty_fd < 0) {
da927ba9 235 log_error_errno(tty_fd, "Failed to open /dev/console: %m");
56d96fc0 236 return tty_fd;
843d2643 237 }
80876c20 238
56d96fc0
LP		 239 /* We don't want to force text mode. plymouth may be showing
240 * pictures already from initrd. */
512947d4 241 r = reset_terminal_fd(tty_fd, false);
56d96fc0 242 if (r < 0) {
da927ba9 243 log_error_errno(r, "Failed to reset /dev/console: %m");
56d96fc0
LP		 244 return r;
245 }
843d2643 246
56d96fc0 247 return 0;
80876c20
LP		 248}
249
f170852a
LP		 250static int set_default_unit(const char *u) {
251 char *c;
252
253 assert(u);
254
bf4df7c3
LP		 255 c = strdup(u);
256 if (!c)
f170852a
LP		 257 return -ENOMEM;
258
fa0f4d8a
LP		 259 free(arg_default_unit);
260 arg_default_unit = c;
bf4df7c3 261
f170852a
LP		 262 return 0;
263}
264
059cb385 265static int parse_proc_cmdline_item(const char *key, const char *value) {
f170852a
LP		 266
267 static const char * const rlmap[] = {
ed370f5d 268 "emergency", SPECIAL_EMERGENCY_TARGET,
099663ff 269 "-b", SPECIAL_EMERGENCY_TARGET,
5329ab10 270 "rescue", SPECIAL_RESCUE_TARGET,
ed370f5d
LP		 271 "single", SPECIAL_RESCUE_TARGET,
272 "-s", SPECIAL_RESCUE_TARGET,
273 "s", SPECIAL_RESCUE_TARGET,
274 "S", SPECIAL_RESCUE_TARGET,
275 "1", SPECIAL_RESCUE_TARGET,
276 "2", SPECIAL_RUNLEVEL2_TARGET,
277 "3", SPECIAL_RUNLEVEL3_TARGET,
278 "4", SPECIAL_RUNLEVEL4_TARGET,
279 "5", SPECIAL_RUNLEVEL5_TARGET,
f170852a 280 };
059cb385 281 int r;
f170852a 282
059cb385 283 assert(key);
5192bd19 284
059cb385 285 if (streq(key, "systemd.unit") && value) {
bf4df7c3
LP		 286
287 if (!in_initrd())
059cb385 288 return set_default_unit(value);
bf4df7c3 289
059cb385 290 } else if (streq(key, "rd.systemd.unit") && value) {
bf4df7c3 291
ca05941b
LP		 292 if (in_initrd())
293 return set_default_unit(value);
f170852a 294
059cb385 295 } else if (streq(key, "systemd.dump_core") && value) {
4fc935ca 296
059cb385 297 r = parse_boolean(value);
fb472900 298 if (r < 0)
059cb385 299 log_warning("Failed to parse dump core switch %s. Ignoring.", value);
4fc935ca 300 else
fa0f4d8a 301 arg_dump_core = r;
4fc935ca 302
059cb385 303 } else if (streq(key, "systemd.crash_shell") && value) {
4fc935ca 304
059cb385 305 r = parse_boolean(value);
fb472900 306 if (r < 0)
059cb385 307 log_warning("Failed to parse crash shell switch %s. Ignoring.", value);
4fc935ca 308 else
fa0f4d8a 309 arg_crash_shell = r;
5e7ee61c 310
059cb385 311 } else if (streq(key, "systemd.crash_chvt") && value) {
5e7ee61c 312
059cb385
LP		 313 if (safe_atoi(value, &r) < 0)
314 log_warning("Failed to parse crash chvt switch %s. Ignoring.", value);
5e7ee61c 315 else
059cb385 316 arg_crash_chvt = r;
5e7ee61c 317
059cb385 318 } else if (streq(key, "systemd.confirm_spawn") && value) {
601f6a1e 319
059cb385
LP		 320 r = parse_boolean(value);
321 if (r < 0)
322 log_warning("Failed to parse confirm spawn switch %s. Ignoring.", value);
601f6a1e 323 else
059cb385 324 arg_confirm_spawn = r;
601f6a1e 325
059cb385 326 } else if (streq(key, "systemd.show_status") && value) {
9e58ff9c 327
059cb385 328 r = parse_show_status(value, &arg_show_status);
d450b6f2 329 if (r < 0)
059cb385
LP		 330 log_warning("Failed to parse show status switch %s. Ignoring.", value);
331
332 } else if (streq(key, "systemd.default_standard_output") && value) {
0a494f1f 333
059cb385 334 r = exec_output_from_string(value);
fb472900 335 if (r < 0)
059cb385 336 log_warning("Failed to parse default standard output switch %s. Ignoring.", value);
0a494f1f
LP		 337 else
338 arg_default_std_output = r;
0a494f1f 339
059cb385
LP		 340 } else if (streq(key, "systemd.default_standard_error") && value) {
341
342 r = exec_output_from_string(value);
fb472900 343 if (r < 0)
059cb385 344 log_warning("Failed to parse default standard error switch %s. Ignoring.", value);
0a494f1f
LP		 345 else
346 arg_default_std_error = r;
9e7c5357 347
059cb385
LP		 348 } else if (streq(key, "systemd.setenv") && value) {
349
350 if (env_assignment_is_valid(value)) {
e21fea24
KS		 351 char **env;
352
059cb385 353 env = strv_env_set(arg_default_environment, value);
e21fea24
KS		 354 if (env)
355 arg_default_environment = env;
356 else
279d3c9c 357 log_warning_errno(ENOMEM, "Setting environment variable '%s' failed, ignoring: %m", value);
e21fea24 358 } else
059cb385 359 log_warning("Environment variable name '%s' is not valid. Ignoring.", value);
9e58ff9c 360
059cb385 361 } else if (streq(key, "quiet") && !value) {
d7b15e0a
LP		 362
363 log_set_max_level(LOG_NOTICE);
364
b6e2f329 365 if (arg_show_status == _SHOW_STATUS_UNSET)
d450b6f2 366 arg_show_status = SHOW_STATUS_AUTO;
059cb385
LP		 367
368 } else if (streq(key, "debug") && !value) {
d7b15e0a 369
1de1c9c3
LP		 370 /* Note that log_parse_environment() handles 'debug'
371 * too, and sets the log level to LOG_DEBUG. */
d7b15e0a 372
b2103dcc
KS		 373 if (detect_container(NULL) > 0)
374 log_set_target(LOG_TARGET_CONSOLE);
059cb385
LP		 375
376 } else if (!in_initrd() && !value) {
f170852a
LP		 377 unsigned i;
378
379 /* SysV compatibility */
f170852a 380 for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
059cb385 381 if (streq(key, rlmap[i]))
f170852a
LP		 382 return set_default_unit(rlmap[i+1]);
383 }
384
385 return 0;
386}
387
e8e581bf
ZJS		 388#define DEFINE_SETTER(name, func, descr) \
389 static int name(const char *unit, \
390 const char *filename, \
391 unsigned line, \
392 const char *section, \
71a61510 393 unsigned section_line, \
e8e581bf
ZJS		 394 const char *lvalue, \
395 int ltype, \
396 const char *rvalue, \
397 void *data, \
398 void *userdata) { \
399 \
400 int r; \
401 \
402 assert(filename); \
403 assert(lvalue); \
404 assert(rvalue); \
405 \
406 r = func(rvalue); \
407 if (r < 0) \
408 log_syntax(unit, LOG_ERR, filename, line, -r, \
409 "Invalid " descr "'%s': %s", \
410 rvalue, strerror(-r)); \
411 \
412 return 0; \
413 }
487393e9 414
e8e581bf
ZJS		 415DEFINE_SETTER(config_parse_level2, log_set_max_level_from_string, "log level")
416DEFINE_SETTER(config_parse_target, log_set_target_from_string, "target")
417DEFINE_SETTER(config_parse_color, log_show_color_from_string, "color" )
418DEFINE_SETTER(config_parse_location, log_show_location_from_string, "location")
487393e9 419
4d7213b2
LP		 420static int config_parse_cpu_affinity2(
421 const char *unit,
422 const char *filename,
423 unsigned line,
424 const char *section,
425 unsigned section_line,
426 const char *lvalue,
427 int ltype,
428 const char *rvalue,
429 void *data,
430 void *userdata) {
487393e9 431
a2a5291b 432 const char *word, *state;
487393e9 433 size_t l;
487393e9
LP		 434 cpu_set_t *c = NULL;
435 unsigned ncpus = 0;
436
437 assert(filename);
438 assert(lvalue);
439 assert(rvalue);
440
a2a5291b 441 FOREACH_WORD_QUOTED(word, l, rvalue, state) {
487393e9
LP		 442 char *t;
443 int r;
444 unsigned cpu;
445
a2a5291b 446 if (!(t = strndup(word, l)))
14212119 447 return log_oom();
487393e9
LP		 448
449 r = safe_atou(t, &cpu);
450 free(t);
451
452 if (!c)
453 if (!(c = cpu_set_malloc(&ncpus)))
14212119 454 return log_oom();
487393e9
LP		 455
456 if (r < 0 || cpu >= ncpus) {
e8e581bf
ZJS		 457 log_syntax(unit, LOG_ERR, filename, line, -r,
458 "Failed to parse CPU affinity '%s'", rvalue);
487393e9
LP		 459 CPU_FREE(c);
460 return -EBADMSG;
461 }
462
463 CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c);
464 }
b2fadec6
ZJS		 465 if (!isempty(state))
466 log_syntax(unit, LOG_ERR, filename, line, EINVAL,
467 "Trailing garbage, ignoring.");
487393e9
LP		 468
469 if (c) {
470 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
79008bdd 471 log_unit_warning(unit, "Failed to set CPU affinity: %m");
487393e9
LP		 472
473 CPU_FREE(c);
474 }
475
476 return 0;
477}
478
4d7213b2
LP		 479static int config_parse_show_status(
480 const char* unit,
481 const char *filename,
482 unsigned line,
483 const char *section,
484 unsigned section_line,
485 const char *lvalue,
486 int ltype,
487 const char *rvalue,
488 void *data,
489 void *userdata) {
490
491 int k;
492 ShowStatus *b = data;
493
494 assert(filename);
495 assert(lvalue);
496 assert(rvalue);
497 assert(data);
498
499 k = parse_show_status(rvalue, b);
500 if (k < 0) {
501 log_syntax(unit, LOG_ERR, filename, line, -k,
502 "Failed to parse show status setting, ignoring: %s", rvalue);
503 return 0;
504 }
505
506 return 0;
507}
508
0c85a4f3
LP		 509static void strv_free_free(char ***l) {
510 char ***i;
511
512 if (!l)
513 return;
514
515 for (i = l; *i; i++)
516 strv_free(*i);
517
518 free(l);
519}
520
521static void free_join_controllers(void) {
0c85a4f3
LP		 522 strv_free_free(arg_join_controllers);
523 arg_join_controllers = NULL;
524}
525
e8e581bf
ZJS		 526static int config_parse_join_controllers(const char *unit,
527 const char *filename,
528 unsigned line,
529 const char *section,
71a61510 530 unsigned section_line,
e8e581bf
ZJS		 531 const char *lvalue,
532 int ltype,
533 const char *rvalue,
534 void *data,
535 void *userdata) {
0c85a4f3
LP		 536
537 unsigned n = 0;
a2a5291b 538 const char *word, *state;
0c85a4f3
LP		 539 size_t length;
540
541 assert(filename);
542 assert(lvalue);
543 assert(rvalue);
544
545 free_join_controllers();
546
a2a5291b 547 FOREACH_WORD_QUOTED(word, length, rvalue, state) {
0c85a4f3
LP		 548 char *s, **l;
549
a2a5291b 550 s = strndup(word, length);
0c85a4f3 551 if (!s)
14212119 552 return log_oom();
0c85a4f3
LP		 553
554 l = strv_split(s, ",");
555 free(s);
556
557 strv_uniq(l);
558
559 if (strv_length(l) <= 1) {
560 strv_free(l);
561 continue;
562 }
563
564 if (!arg_join_controllers) {
565 arg_join_controllers = new(char**, 2);
566 if (!arg_join_controllers) {
567 strv_free(l);
14212119 568 return log_oom();
0c85a4f3
LP		 569 }
570
571 arg_join_controllers[0] = l;
572 arg_join_controllers[1] = NULL;
573
574 n = 1;
575 } else {
576 char ***a;
577 char ***t;
578
579 t = new0(char**, n+2);
580 if (!t) {
581 strv_free(l);
14212119 582 return log_oom();
0c85a4f3
LP		 583 }
584
585 n = 0;
586
587 for (a = arg_join_controllers; *a; a++) {
588
589 if (strv_overlap(*a, l)) {
e3e45d4f 590 if (strv_extend_strv(&l, *a) < 0) {
0c85a4f3
LP		 591 strv_free(l);
592 strv_free_free(t);
14212119 593 return log_oom();
0c85a4f3
LP		 594 }
595
0c85a4f3
LP		 596 } else {
597 char **c;
598
599 c = strv_copy(*a);
600 if (!c) {
601 strv_free(l);
602 strv_free_free(t);
14212119 603 return log_oom();
0c85a4f3
LP		 604 }
605
606 t[n++] = c;
607 }
608 }
609
610 t[n++] = strv_uniq(l);
611
612 strv_free_free(arg_join_controllers);
613 arg_join_controllers = t;
614 }
615 }
b2fadec6
ZJS		 616 if (!isempty(state))
617 log_syntax(unit, LOG_ERR, filename, line, EINVAL,
618 "Trailing garbage, ignoring.");
0c85a4f3
LP		 619
620 return 0;
621}
622
487393e9
LP		 623static int parse_config_file(void) {
624
f975e971 625 const ConfigTableItem items[] = {
d3b1c508
LP		 626 { "Manager", "LogLevel", config_parse_level2, 0, NULL },
627 { "Manager", "LogTarget", config_parse_target, 0, NULL },
628 { "Manager", "LogColor", config_parse_color, 0, NULL },
629 { "Manager", "LogLocation", config_parse_location, 0, NULL },
630 { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
631 { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
632 { "Manager", "ShowStatus", config_parse_show_status, 0, &arg_show_status },
633 { "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt },
634 { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
635 { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
636 { "Manager", "RuntimeWatchdogSec", config_parse_sec, 0, &arg_runtime_watchdog },
637 { "Manager", "ShutdownWatchdogSec", config_parse_sec, 0, &arg_shutdown_watchdog },
638 { "Manager", "CapabilityBoundingSet", config_parse_bounding_set, 0, &arg_capability_bounding_set_drop },
89fffa27 639#ifdef HAVE_SECCOMP
d3b1c508 640 { "Manager", "SystemCallArchitectures", config_parse_syscall_archs, 0, &arg_syscall_archs },
89fffa27 641#endif
d3b1c508 642 { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
bd8f585b 643 { "Manager", "DefaultTimerAccuracySec", config_parse_sec, 0, &arg_default_timer_accuracy_usec },
d3b1c508
LP		 644 { "Manager", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output },
645 { "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error },
646 { "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_default_timeout_start_usec },
647 { "Manager", "DefaultTimeoutStopSec", config_parse_sec, 0, &arg_default_timeout_stop_usec },
648 { "Manager", "DefaultRestartSec", config_parse_sec, 0, &arg_default_restart_usec },
649 { "Manager", "DefaultStartLimitInterval", config_parse_sec, 0, &arg_default_start_limit_interval },
650 { "Manager", "DefaultStartLimitBurst", config_parse_unsigned, 0, &arg_default_start_limit_burst },
651 { "Manager", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
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] },
085afe36
LP		 668 { "Manager", "DefaultCPUAccounting", config_parse_bool, 0, &arg_default_cpu_accounting },
669 { "Manager", "DefaultBlockIOAccounting", config_parse_bool, 0, &arg_default_blockio_accounting },
670 { "Manager", "DefaultMemoryAccounting", config_parse_bool, 0, &arg_default_memory_accounting },
d3b1c508 671 {}
487393e9
LP		 672 };
673
487393e9 674 const char *fn;
487393e9 675
19adb8a3 676 fn = arg_running_as == SYSTEMD_SYSTEM ? PKGSYSCONFDIR "/system.conf" : PKGSYSCONFDIR "/user.conf";
36f822c4
ZJS		 677 config_parse(NULL, fn, NULL,
678 "Manager\0",
679 config_item_table_lookup, items,
680 false, false, true, NULL);
487393e9 681
487393e9
LP		 682 return 0;
683}
684
f170852a
LP		 685static int parse_argv(int argc, char *argv[]) {
686
687 enum {
688 ARG_LOG_LEVEL = 0x100,
689 ARG_LOG_TARGET,
bbe63281
LP		 690 ARG_LOG_COLOR,
691 ARG_LOG_LOCATION,
2f198e2f 692 ARG_UNIT,
edb9aaa8 693 ARG_SYSTEM,
af2d49f7 694 ARG_USER,
e537352b 695 ARG_TEST,
b87c2aa6 696 ARG_NO_PAGER,
9ba0bc4e 697 ARG_VERSION,
80876c20 698 ARG_DUMP_CONFIGURATION_ITEMS,
9e58ff9c
LP		 699 ARG_DUMP_CORE,
700 ARG_CRASH_SHELL,
a16e1123 701 ARG_CONFIRM_SPAWN,
9e58ff9c 702 ARG_SHOW_STATUS,
4288f619 703 ARG_DESERIALIZE,
2660882b 704 ARG_SWITCHED_ROOT,
0a494f1f
LP		 705 ARG_DEFAULT_STD_OUTPUT,
706 ARG_DEFAULT_STD_ERROR
f170852a
LP		 707 };
708
709 static const struct option options[] = {
a16e1123
LP		 710 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
711 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
bbe63281
LP		 712 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
713 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
2f198e2f 714 { "unit", required_argument, NULL, ARG_UNIT },
edb9aaa8 715 { "system", no_argument, NULL, ARG_SYSTEM },
af2d49f7 716 { "user", no_argument, NULL, ARG_USER },
a16e1123 717 { "test", no_argument, NULL, ARG_TEST },
b87c2aa6 718 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
a16e1123 719 { "help", no_argument, NULL, 'h' },
9ba0bc4e 720 { "version", no_argument, NULL, ARG_VERSION },
a16e1123 721 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
a5d87bf0
LP		 722 { "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
723 { "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
724 { "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
6e98720f 725 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
a16e1123 726 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
2660882b 727 { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
0a494f1f
LP		 728 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
729 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
fb472900 730 {}
f170852a
LP		 731 };
732
733 int c, r;
734
735 assert(argc >= 1);
736 assert(argv);
737
b770165a
LP		 738 if (getpid() == 1)
739 opterr = 0;
740
099663ff 741 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
f170852a
LP		 742
743 switch (c) {
744
745 case ARG_LOG_LEVEL:
fb472900
ZJS		 746 r = log_set_max_level_from_string(optarg);
747 if (r < 0) {
f170852a
LP		 748 log_error("Failed to parse log level %s.", optarg);
749 return r;
750 }
751
752 break;
753
754 case ARG_LOG_TARGET:
fb472900
ZJS		 755 r = log_set_target_from_string(optarg);
756 if (r < 0) {
f170852a
LP		 757 log_error("Failed to parse log target %s.", optarg);
758 return r;
759 }
760
761 break;
762
bbe63281
LP		 763 case ARG_LOG_COLOR:
764
d0b170c8 765 if (optarg) {
fb472900
ZJS		 766 r = log_show_color_from_string(optarg);
767 if (r < 0) {
d0b170c8
LP		 768 log_error("Failed to parse log color setting %s.", optarg);
769 return r;
770 }
771 } else
772 log_show_color(true);
bbe63281
LP		 773
774 break;
775
776 case ARG_LOG_LOCATION:
d0b170c8 777 if (optarg) {
fb472900
ZJS		 778 r = log_show_location_from_string(optarg);
779 if (r < 0) {
d0b170c8
LP		 780 log_error("Failed to parse log location setting %s.", optarg);
781 return r;
782 }
783 } else
784 log_show_location(true);
bbe63281
LP		 785
786 break;
787
0a494f1f 788 case ARG_DEFAULT_STD_OUTPUT:
fb472900
ZJS		 789 r = exec_output_from_string(optarg);
790 if (r < 0) {
0a494f1f
LP		 791 log_error("Failed to parse default standard output setting %s.", optarg);
792 return r;
793 } else
794 arg_default_std_output = r;
795 break;
796
797 case ARG_DEFAULT_STD_ERROR:
fb472900
ZJS		 798 r = exec_output_from_string(optarg);
799 if (r < 0) {
0a494f1f
LP		 800 log_error("Failed to parse default standard error output setting %s.", optarg);
801 return r;
802 } else
803 arg_default_std_error = r;
804 break;
805
2f198e2f 806 case ARG_UNIT:
f170852a 807
fb472900
ZJS		 808 r = set_default_unit(optarg);
809 if (r < 0) {
da927ba9 810 log_error_errno(r, "Failed to set default unit %s: %m", optarg);
f170852a
LP		 811 return r;
812 }
813
814 break;
815
edb9aaa8 816 case ARG_SYSTEM:
67445f4e 817 arg_running_as = SYSTEMD_SYSTEM;
edb9aaa8 818 break;
a5dab5ce 819
af2d49f7 820 case ARG_USER:
67445f4e 821 arg_running_as = SYSTEMD_USER;
a5dab5ce 822 break;
a5dab5ce 823
e965d56d 824 case ARG_TEST:
fa0f4d8a 825 arg_action = ACTION_TEST;
b87c2aa6
ZJS		 826 if (arg_no_pager < 0)
827 arg_no_pager = true;
828 break;
829
830 case ARG_NO_PAGER:
831 arg_no_pager = true;
e965d56d
LP		 832 break;
833
9ba0bc4e
ZJS		 834 case ARG_VERSION:
835 arg_action = ACTION_VERSION;
836 break;
837
e537352b 838 case ARG_DUMP_CONFIGURATION_ITEMS:
fa0f4d8a 839 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
e537352b
LP		 840 break;
841
9e58ff9c 842 case ARG_DUMP_CORE:
a5d87bf0
LP		 843 r = optarg ? parse_boolean(optarg) : 1;
844 if (r < 0) {
845 log_error("Failed to parse dump core boolean %s.", optarg);
846 return r;
847 }
848 arg_dump_core = r;
9e58ff9c
LP		 849 break;
850
851 case ARG_CRASH_SHELL:
a5d87bf0
LP		 852 r = optarg ? parse_boolean(optarg) : 1;
853 if (r < 0) {
854 log_error("Failed to parse crash shell boolean %s.", optarg);
855 return r;
856 }
857 arg_crash_shell = r;
9e58ff9c
LP		 858 break;
859
80876c20 860 case ARG_CONFIRM_SPAWN:
a5d87bf0
LP		 861 r = optarg ? parse_boolean(optarg) : 1;
862 if (r < 0) {
863 log_error("Failed to parse confirm spawn boolean %s.", optarg);
864 return r;
865 }
866 arg_confirm_spawn = r;
80876c20
LP		 867 break;
868
9e58ff9c 869 case ARG_SHOW_STATUS:
d450b6f2
ZJS		 870 if (optarg) {
871 r = parse_show_status(optarg, &arg_show_status);
872 if (r < 0) {
873 log_error("Failed to parse show status boolean %s.", optarg);
874 return r;
875 }
876 } else
877 arg_show_status = SHOW_STATUS_YES;
6e98720f 878 break;
a5d87bf0 879
a16e1123
LP		 880 case ARG_DESERIALIZE: {
881 int fd;
882 FILE *f;
883
01e10de3
LP		 884 r = safe_atoi(optarg, &fd);
885 if (r < 0 || fd < 0) {
a16e1123 886 log_error("Failed to parse deserialize option %s.", optarg);
01e10de3 887 return r < 0 ? r : -EINVAL;
a16e1123
LP		 888 }
889
01e10de3
LP		 890 fd_cloexec(fd, true);
891
892 f = fdopen(fd, "r");
893 if (!f) {
a16e1123 894 log_error("Failed to open serialization fd: %m");
01e10de3 895 return -errno;
a16e1123
LP		 896 }
897
d3b1c508
LP		 898 if (arg_serialization)
899 fclose(arg_serialization);
a16e1123 900
d3b1c508 901 arg_serialization = f;
a16e1123
LP		 902
903 break;
904 }
905
2660882b 906 case ARG_SWITCHED_ROOT:
bf4df7c3 907 arg_switched_root = true;
d03bc1b8
HH		 908 break;
909
f170852a 910 case 'h':
fa0f4d8a 911 arg_action = ACTION_HELP;
b87c2aa6
ZJS		 912 if (arg_no_pager < 0)
913 arg_no_pager = true;
f170852a
LP		 914 break;
915
1d2e23ab
LP		 916 case 'D':
917 log_set_max_level(LOG_DEBUG);
918 break;
919
099663ff
LP		 920 case 'b':
921 case 's':
922 case 'z':
923 /* Just to eat away the sysvinit kernel
924 * cmdline args without getopt() error
925 * messages that we'll parse in
926 * parse_proc_cmdline_word() or ignore. */
f170852a 927
099663ff 928 case '?':
601185b4 929 if (getpid() != 1)
099663ff 930 return -EINVAL;
601185b4
ZJS		 931 else
932 return 0;
099663ff 933
601185b4
ZJS		 934 default:
935 assert_not_reached("Unhandled option code.");
f170852a
LP		 936 }
937
d821e6d6
LP		 938 if (optind < argc && getpid() != 1) {
939 /* Hmm, when we aren't run as init system
940 * let's complain about excess arguments */
941
942 log_error("Excess arguments.");
943 return -EINVAL;
944 }
945
f170852a
LP		 946 return 0;
947}
948
949static int help(void) {
950
2e33c433 951 printf("%s [OPTIONS...]\n\n"
af2d49f7 952 "Starts up and maintains the system or user services.\n\n"
e537352b 953 " -h --help Show this help\n"
e537352b 954 " --test Determine startup sequence, dump it and exit\n"
b87c2aa6 955 " --no-pager Do not pipe output into a pager\n"
80876c20 956 " --dump-configuration-items Dump understood unit configuration items\n"
9e58ff9c 957 " --unit=UNIT Set default unit\n"
edb9aaa8 958 " --system Run a system instance, even if PID != 1\n"
af2d49f7 959 " --user Run a user instance\n"
a5d87bf0
LP		 960 " --dump-core[=0|1] Dump core on crash\n"
961 " --crash-shell[=0|1] Run shell on crash\n"
962 " --confirm-spawn[=0|1] Ask for confirmation when spawning processes\n"
6e98720f 963 " --show-status[=0|1] Show status updates on the console during bootup\n"
c1dc6153 964 " --log-target=TARGET Set log target (console, journal, kmsg, journal-or-kmsg, null)\n"
9e58ff9c 965 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
2218198b 966 " --log-color[=0|1] Highlight important log messages\n"
0a494f1f
LP		 967 " --log-location[=0|1] Include code location in log messages\n"
968 " --default-standard-output= Set default standard output for services\n"
969 " --default-standard-error= Set default standard error output for services\n",
5b6319dc 970 program_invocation_short_name);
f170852a
LP		 971
972 return 0;
973}
974
9ba0bc4e
ZJS		 975static int version(void) {
976 puts(PACKAGE_STRING);
9ba0bc4e
ZJS		 977 puts(SYSTEMD_FEATURES);
978
979 return 0;
980}
981
b3680f49 982static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching_root) {
a16e1123
LP		 983 FILE *f = NULL;
984 FDSet *fds = NULL;
985 int r;
986
987 assert(m);
988 assert(_f);
989 assert(_fds);
990
6b78f9b4
LP		 991 r = manager_open_serialization(m, &f);
992 if (r < 0) {
da927ba9 993 log_error_errno(r, "Failed to create serialization file: %m");
a16e1123
LP		 994 goto fail;
995 }
996
71445ae7
LP		 997 /* Make sure nothing is really destructed when we shut down */
998 m->n_reloading ++;
718db961 999 bus_manager_send_reloading(m, true);
71445ae7 1000
6b78f9b4
LP		 1001 fds = fdset_new();
1002 if (!fds) {
a16e1123 1003 r = -ENOMEM;
da927ba9 1004 log_error_errno(r, "Failed to allocate fd set: %m");
a16e1123
LP		 1005 goto fail;
1006 }
1007
b3680f49 1008 r = manager_serialize(m, f, fds, switching_root);
6b78f9b4 1009 if (r < 0) {
da927ba9 1010 log_error_errno(r, "Failed to serialize state: %m");
a16e1123
LP		 1011 goto fail;
1012 }
1013
1014 if (fseeko(f, 0, SEEK_SET) < 0) {
1015 log_error("Failed to rewind serialization fd: %m");
1016 goto fail;
1017 }
1018
6b78f9b4
LP		 1019 r = fd_cloexec(fileno(f), false);
1020 if (r < 0) {
da927ba9 1021 log_error_errno(r, "Failed to disable O_CLOEXEC for serialization: %m");
a16e1123
LP		 1022 goto fail;
1023 }
1024
6b78f9b4
LP		 1025 r = fdset_cloexec(fds, false);
1026 if (r < 0) {
da927ba9 1027 log_error_errno(r, "Failed to disable O_CLOEXEC for serialization fds: %m");
a16e1123
LP		 1028 goto fail;
1029 }
1030
1031 *_f = f;
1032 *_fds = fds;
1033
1034 return 0;
1035
1036fail:
1037 fdset_free(fds);
1038
1039 if (f)
1040 fclose(f);
1041
1042 return r;
1043}
1044
4096d6f5
LP		 1045static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
1046 struct rlimit nl;
1047 int r;
1048
1049 assert(saved_rlimit);
1050
1051 /* Save the original RLIMIT_NOFILE so that we can reset it
1052 * later when transitioning from the initrd to the main
1053 * systemd or suchlike. */
1054 if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0) {
1055 log_error("Reading RLIMIT_NOFILE failed: %m");
1056 return -errno;
1057 }
1058
1059 /* Make sure forked processes get the default kernel setting */
1060 if (!arg_default_rlimit[RLIMIT_NOFILE]) {
1061 struct rlimit *rl;
1062
1063 rl = newdup(struct rlimit, saved_rlimit, 1);
1064 if (!rl)
1065 return log_oom();
1066
1067 arg_default_rlimit[RLIMIT_NOFILE] = rl;
1068 }
1069
1070 /* Bump up the resource limit for ourselves substantially */
1071 nl.rlim_cur = nl.rlim_max = 64*1024;
1072 r = setrlimit_closest(RLIMIT_NOFILE, &nl);
1073 if (r < 0) {
da927ba9 1074 log_error_errno(r, "Setting RLIMIT_NOFILE failed: %m");
4096d6f5
LP		 1075 return r;
1076 }
1077
1078 return 0;
1079}
1080
6ee5bbf8 1081static void test_mtab(void) {
6ee5bbf8 1082
5b4c0131
LP		 1083 static const char ok[] =
1084 "/proc/self/mounts\0"
1085 "/proc/mounts\0"
1086 "../proc/self/mounts\0"
1087 "../proc/mounts\0";
80758717 1088
5b4c0131
LP		 1089 _cleanup_free_ char *p = NULL;
1090 int r;
6ee5bbf8 1091
5b4c0131
LP		 1092 /* Check that /etc/mtab is a symlink to the right place or
1093 * non-existing. But certainly not a file, or a symlink to
1094 * some weird place... */
6ee5bbf8 1095
5b4c0131
LP		 1096 r = readlink_malloc("/etc/mtab", &p);
1097 if (r == -ENOENT)
1098 return;
1099 if (r >= 0 && nulstr_contains(ok, p))
1100 return;
6ee5bbf8 1101
80758717
LP		 1102 log_warning("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
1103 "This is not supported anymore. "
1104 "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
1105}
1106
1107static void test_usr(void) {
80758717 1108
ed1c99fc 1109 /* Check that /usr is not a separate fs */
80758717 1110
871c44a7
LP		 1111 if (dir_is_empty("/usr") <= 0)
1112 return;
1113
2376ce13 1114 log_warning("/usr appears to be on its own filesytem and is not already mounted. This is not a supported setup. "
871c44a7
LP		 1115 "Some things will probably break (sometimes even silently) in mysterious ways. "
1116 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
1117}
1118
a07fdfa3
LP		 1119static int initialize_join_controllers(void) {
1120 /* By default, mount "cpu" + "cpuacct" together, and "net_cls"
1121 * + "net_prio". We'd like to add "cpuset" to the mix, but
1122 * "cpuset" does't really work for groups with no initialized
1123 * attributes. */
1124
1125 arg_join_controllers = new(char**, 3);
1126 if (!arg_join_controllers)
1127 return -ENOMEM;
1128
1129 arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL);
a07fdfa3 1130 arg_join_controllers[1] = strv_new("net_cls", "net_prio", NULL);
a6b26d90
ZJS		 1131 arg_join_controllers[2] = NULL;
1132
1133 if (!arg_join_controllers[0] || !arg_join_controllers[1]) {
1134 free_join_controllers();
a07fdfa3 1135 return -ENOMEM;
a6b26d90 1136 }
a07fdfa3 1137
a07fdfa3
LP		 1138 return 0;
1139}
1140
d3b1c508
LP		 1141static int enforce_syscall_archs(Set *archs) {
1142#ifdef HAVE_SECCOMP
1143 scmp_filter_ctx *seccomp;
1144 Iterator i;
1145 void *id;
1146 int r;
1147
1148 seccomp = seccomp_init(SCMP_ACT_ALLOW);
1149 if (!seccomp)
1150 return log_oom();
1151
1152 SET_FOREACH(id, arg_syscall_archs, i) {
1153 r = seccomp_arch_add(seccomp, PTR_TO_UINT32(id) - 1);
1154 if (r == -EEXIST)
1155 continue;
1156 if (r < 0) {
da927ba9 1157 log_error_errno(r, "Failed to add architecture to seccomp: %m");
d3b1c508
LP		 1158 goto finish;
1159 }
1160 }
1161
8a8bf3c0
LP		 1162 r = seccomp_attr_set(seccomp, SCMP_FLTATR_CTL_NNP, 0);
1163 if (r < 0) {
da927ba9 1164 log_error_errno(r, "Failed to unset NO_NEW_PRIVS: %m");
8a8bf3c0
LP		 1165 goto finish;
1166 }
1167
d3b1c508
LP		 1168 r = seccomp_load(seccomp);
1169 if (r < 0)
da927ba9 1170 log_error_errno(r, "Failed to add install architecture seccomp: %m");
d3b1c508
LP		 1171
1172finish:
1173 seccomp_release(seccomp);
1174 return r;
1175#else
1176 return 0;
1177#endif
1178}
1179
b6e2f329
LP		 1180static int status_welcome(void) {
1181 _cleanup_free_ char *pretty_name = NULL, *ansi_color = NULL;
1182 int r;
1183
1184 r = parse_env_file("/etc/os-release", NEWLINE,
1185 "PRETTY_NAME", &pretty_name,
1186 "ANSI_COLOR", &ansi_color,
1187 NULL);
5ae4d543
LP		 1188 if (r == -ENOENT) {
1189 r = parse_env_file("/usr/lib/os-release", NEWLINE,
1190 "PRETTY_NAME", &pretty_name,
1191 "ANSI_COLOR", &ansi_color,
1192 NULL);
1193 }
b6e2f329
LP		 1194
1195 if (r < 0 && r != -ENOENT)
da927ba9 1196 log_warning_errno(r, "Failed to read os-release file: %m");
b6e2f329
LP		 1197
1198 return status_printf(NULL, false, false,
1199 "\nWelcome to \x1B[%sm%s\x1B[0m!\n",
1200 isempty(ansi_color) ? "1" : ansi_color,
1201 isempty(pretty_name) ? "Linux" : pretty_name);
1202}
1203
fdd25311
LP		 1204static int write_container_id(void) {
1205 const char *c;
1206
1207 c = getenv("container");
1208 if (isempty(c))
1209 return 0;
1210
1211 return write_string_file("/run/systemd/container", c);
1212}
1213
60918275
LP		 1214int main(int argc, char *argv[]) {
1215 Manager *m = NULL;
22f4096c 1216 int r, retval = EXIT_FAILURE;
9d76d730
LP		 1217 usec_t before_startup, after_startup;
1218 char timespan[FORMAT_TIMESPAN_MAX];
a16e1123
LP		 1219 FDSet *fds = NULL;
1220 bool reexecute = false;
b9080b03 1221 const char *shutdown_verb = NULL;
e9ddabc2 1222 dual_timestamp initrd_timestamp = { 0ULL, 0ULL };
c3a170f3
HH		 1223 dual_timestamp userspace_timestamp = { 0ULL, 0ULL };
1224 dual_timestamp kernel_timestamp = { 0ULL, 0ULL };
c2e0d600
TA		 1225 dual_timestamp security_start_timestamp = { 0ULL, 0ULL };
1226 dual_timestamp security_finish_timestamp = { 0ULL, 0ULL };
5d6b1584 1227 static char systemd[] = "systemd";
2660882b 1228 bool skip_setup = false;
d3b1c508 1229 unsigned j;
0b3325e7 1230 bool loaded_policy = false;
e96d6be7 1231 bool arm_reboot_watchdog = false;
bf4df7c3 1232 bool queue_default_job = false;
5f5c2f38 1233 bool empty_etc = false;
41669317 1234 char *switch_root_dir = NULL, *switch_root_init = NULL;
4096d6f5 1235 static struct rlimit saved_rlimit_nofile = { 0, 0 };
cb6531be 1236 const char *error_message = NULL;
27b14a22 1237
058dc6f3 1238#ifdef HAVE_SYSV_COMPAT
2cb1a60d 1239 if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
35b8ca3a 1240 /* This is compatibility support for SysV, where
2cb1a60d
LP		 1241 * calling init as a user is identical to telinit. */
1242
1243 errno = -ENOENT;
1244 execv(SYSTEMCTL_BINARY_PATH, argv);
1245 log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
1246 return 1;
1247 }
058dc6f3 1248#endif
2cb1a60d 1249
c3a170f3
HH		 1250 dual_timestamp_from_monotonic(&kernel_timestamp, 0);
1251 dual_timestamp_get(&userspace_timestamp);
1252
0b3325e7
LP		 1253 /* Determine if this is a reexecution or normal bootup. We do
1254 * the full command line parsing much later, so let's just
1255 * have a quick peek here. */
db813c2a
LP		 1256 if (strv_find(argv+1, "--deserialize"))
1257 skip_setup = true;
0b3325e7 1258
2660882b
LP		 1259 /* If we have switched root, do all the special setup
1260 * things */
db813c2a
LP		 1261 if (strv_find(argv+1, "--switched-root"))
1262 skip_setup = false;
d03bc1b8 1263
f3b6a3ed
LP		 1264 /* If we get started via the /sbin/init symlink then we are
1265 called 'init'. After a subsequent reexecution we are then
1266 called 'systemd'. That is confusing, hence let's call us
1267 systemd right-away. */
f3b6a3ed
LP		 1268 program_invocation_short_name = systemd;
1269 prctl(PR_SET_NAME, systemd);
5d6b1584 1270
9a0e6896
LP		 1271 saved_argv = argv;
1272 saved_argc = argc;
f3b6a3ed 1273
2cc59dbf 1274 log_show_color(isatty(STDERR_FILENO) > 0);
c1dc6153 1275 log_set_upgrade_syslog_to_journal(true);
bbe63281 1276
90dc8c2e
MG		 1277 /* Disable the umask logic */
1278 if (getpid() == 1)
1279 umask(0);
1280
a866073d 1281 if (getpid() == 1 && detect_container(NULL) <= 0) {
4f8d551f 1282
a866073d 1283 /* Running outside of a container as PID 1 */
67445f4e 1284 arg_running_as = SYSTEMD_SYSTEM;
a866073d
LP		 1285 make_null_stdio();
1286 log_set_target(LOG_TARGET_KMSG);
1287 log_open();
1288
21bf2ab0 1289 if (in_initrd())
c3a170f3 1290 initrd_timestamp = userspace_timestamp;
c3ba6250 1291
2660882b 1292 if (!skip_setup) {
8f838d8a 1293 mount_setup_early();
c2e0d600 1294 dual_timestamp_get(&security_start_timestamp);
cb6531be
ZJS		 1295 if (mac_selinux_setup(&loaded_policy) < 0) {
1296 error_message = "Failed to load SELinux policy";
0b3325e7 1297 goto finish;
cb6531be
ZJS		 1298 } else if (ima_setup() < 0) {
1299 error_message = "Failed to load IMA policy";
81611586 1300 goto finish;
cb6531be
ZJS		 1301 } else if (mac_smack_setup(&loaded_policy) < 0) {
1302 error_message = "Failed to load SMACK policy";
ffbd2c4d 1303 goto finish;
cb6531be 1304 }
c2e0d600 1305 dual_timestamp_get(&security_finish_timestamp);
81611586 1306 }
0b3325e7 1307
cb6531be
ZJS		 1308 if (mac_selinux_init(NULL) < 0) {
1309 error_message = "Failed to initialize SELinux policy";
0ff4cdd9 1310 goto finish;
cb6531be 1311 }
7948c4df 1312
72edcff5 1313 if (!skip_setup) {
24efb112 1314 if (clock_is_localtime() > 0) {
0b3325e7 1315 int min;
7948c4df 1316
c264aeab
KS		 1317 /*
1318 * The very first call of settimeofday() also does a time warp in the kernel.
1319 *
1320 * In the rtc-in-local time mode, we set the kernel's timezone, and rely on
1321 * external tools to take care of maintaining the RTC and do all adjustments.
1322 * This matches the behavior of Windows, which leaves the RTC alone if the
1323 * registry tells that the RTC runs in UTC.
1324 */
24efb112 1325 r = clock_set_timezone(&min);
0b3325e7 1326 if (r < 0)
da927ba9 1327 log_error_errno(r, "Failed to apply local time delta, ignoring: %m");
0b3325e7
LP		 1328 else
1329 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
19e65613
KS		 1330 } else if (!in_initrd()) {
1331 /*
c264aeab 1332 * Do a dummy very first call to seal the kernel's time warp magic.
19e65613
KS		 1333 *
1334 * Do not call this this from inside the initrd. The initrd might not
1335 * carry /etc/adjtime with LOCAL, but the real system could be set up
1336 * that way. In such case, we need to delay the time-warp or the sealing
1337 * until we reach the real system.
c264aeab
KS		 1338 *
1339 * Do no set the kernel's timezone. The concept of local time cannot
1340 * be supported reliably, the time will jump or be incorrect at every daylight
1341 * saving time change. All kernel local time concepts will be treated
1342 * as UTC that way.
19e65613 1343 */
c264aeab 1344 clock_reset_timewarp();
72edcff5
KS		 1345 }
1346 }
a866073d
LP		 1347
1348 /* Set the default for later on, but don't actually
1349 * open the logs like this for now. Note that if we
1350 * are transitioning from the initrd there might still
1351 * be journal fd open, and we shouldn't attempt
1352 * opening that before we parsed /proc/cmdline which
1353 * might redirect output elsewhere. */
1354 log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
1355
1356 } else if (getpid() == 1) {
a866073d 1357 /* Running inside a container, as PID 1 */
67445f4e 1358 arg_running_as = SYSTEMD_SYSTEM;
a866073d 1359 log_set_target(LOG_TARGET_CONSOLE);
99f09825 1360 log_close_console(); /* force reopen of /dev/console */
a866073d
LP		 1361 log_open();
1362
1363 /* For the later on, see above... */
1364 log_set_target(LOG_TARGET_JOURNAL);
1365
c3a170f3
HH		 1366 /* clear the kernel timestamp,
1367 * because we are in a container */
1368 kernel_timestamp.monotonic = 0ULL;
1369 kernel_timestamp.realtime = 0ULL;
a866073d 1370
c3a170f3 1371 } else {
a866073d 1372 /* Running as user instance */
67445f4e 1373 arg_running_as = SYSTEMD_USER;
eeecf6e6 1374 log_set_target(LOG_TARGET_AUTO);
871e5809 1375 log_open();
c3a170f3
HH		 1376
1377 /* clear the kernel timestamp,
1378 * because we are not PID 1 */
1379 kernel_timestamp.monotonic = 0ULL;
1380 kernel_timestamp.realtime = 0ULL;
bbe63281 1381 }
a5dab5ce 1382
0c85a4f3 1383 /* Initialize default unit */
6afa301b
LP		 1384 r = set_default_unit(SPECIAL_DEFAULT_TARGET);
1385 if (r < 0) {
da927ba9 1386 log_emergency_errno(r, "Failed to set default unit %s: %m", SPECIAL_DEFAULT_TARGET);
cb6531be 1387 error_message = "Failed to set default unit";
f170852a 1388 goto finish;
14212119 1389 }
60918275 1390
a07fdfa3 1391 r = initialize_join_controllers();
cb6531be
ZJS		 1392 if (r < 0) {
1393 error_message = "Failed to initalize cgroup controllers";
0c85a4f3 1394 goto finish;
cb6531be 1395 }
0c85a4f3 1396
f170852a
LP		 1397 /* Mount /proc, /sys and friends, so that /proc/cmdline and
1398 * /proc/$PID/fd is available. */
c1dae1b3 1399 if (getpid() == 1) {
f84f9974
LP		 1400
1401 /* Load the kernel modules early, so that we kdbus.ko is loaded before kdbusfs shall be mounted */
2e75e2a8
DM		 1402 if (!skip_setup)
1403 kmod_setup();
2e75e2a8 1404
0c85a4f3 1405 r = mount_setup(loaded_policy);
cb6531be
ZJS		 1406 if (r < 0) {
1407 error_message = "Failed to mount API filesystems";
8efe3c01 1408 goto finish;
cb6531be 1409 }
0c85a4f3 1410 }
4ade7963
LP		 1411
1412 /* Reset all signal handlers. */
1413 assert_se(reset_all_signal_handlers() == 0);
1414
9a34ec5f 1415 ignore_signals(SIGNALS_IGNORE, -1);
078e4539 1416
cb6531be
ZJS		 1417 if (parse_config_file() < 0) {
1418 error_message = "Failed to parse config file";
487393e9 1419 goto finish;
cb6531be 1420 }
487393e9 1421
b5884878
LP		 1422 if (arg_running_as == SYSTEMD_SYSTEM) {
1423 r = parse_proc_cmdline(parse_proc_cmdline_item);
1424 if (r < 0)
da927ba9 1425 log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
b5884878 1426 }
f170852a 1427
1de1c9c3
LP		 1428 /* Note that this also parses bits from the kernel command
1429 * line, including "debug". */
f170852a
LP		 1430 log_parse_environment();
1431
cb6531be
ZJS		 1432 if (parse_argv(argc, argv) < 0) {
1433 error_message = "Failed to parse commandline arguments";
f170852a 1434 goto finish;
cb6531be 1435 }
f170852a 1436
6bae23a0
TB		 1437 if (arg_action == ACTION_TEST &&
1438 geteuid() == 0) {
b5c6cf87
LP		 1439 log_error("Don't run test mode as root.");
1440 goto finish;
1441 }
1442
6bae23a0
TB		 1443 if (arg_running_as == SYSTEMD_USER &&
1444 arg_action == ACTION_RUN &&
1445 sd_booted() <= 0) {
1446 log_error("Trying to run as user instance, but the system has not been booted with systemd.");
1447 goto finish;
1448 }
1449
67445f4e 1450 if (arg_running_as == SYSTEMD_SYSTEM &&
fe783b03
LP		 1451 arg_action == ACTION_RUN &&
1452 running_in_chroot() > 0) {
1453 log_error("Cannot be run in a chroot() environment.");
1454 goto finish;
1455 }
1456
0d8c31ff
ZJS		 1457 if (arg_action == ACTION_TEST)
1458 skip_setup = true;
1459
b87c2aa6
ZJS		 1460 pager_open_if_enabled();
1461
fa0f4d8a 1462 if (arg_action == ACTION_HELP) {
f170852a
LP		 1463 retval = help();
1464 goto finish;
9ba0bc4e
ZJS		 1465 } else if (arg_action == ACTION_VERSION) {
1466 retval = version();
1467 goto finish;
fa0f4d8a 1468 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
e537352b 1469 unit_dump_config_items(stdout);
22f4096c 1470 retval = EXIT_SUCCESS;
e537352b 1471 goto finish;
fa0f4d8a 1472 } else if (arg_action == ACTION_DONE) {
22f4096c 1473 retval = EXIT_SUCCESS;
4288f619 1474 goto finish;
f170852a
LP		 1475 }
1476
8be28fb1
KS		 1477 if (arg_running_as == SYSTEMD_USER &&
1478 !getenv("XDG_RUNTIME_DIR")) {
1479 log_error("Trying to run as user instance, but $XDG_RUNTIME_DIR is not set.");
1480 goto finish;
1481 }
1482
fa0f4d8a 1483 assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST);
f170852a 1484
871e5809
LP		 1485 /* Close logging fds, in order not to confuse fdset below */
1486 log_close();
1487
a16e1123 1488 /* Remember open file descriptors for later deserialization */
01e10de3
LP		 1489 r = fdset_new_fill(&fds);
1490 if (r < 0) {
da927ba9 1491 log_emergency_errno(r, "Failed to allocate fd set: %m");
cb6531be 1492 error_message = "Failed to allocate fd set";
01e10de3
LP		 1493 goto finish;
1494 } else
1495 fdset_cloexec(fds, true);
a16e1123 1496
d3b1c508
LP		 1497 if (arg_serialization)
1498 assert_se(fdset_remove(fds, fileno(arg_serialization)) >= 0);
a16e1123 1499
90dc8c2e 1500 if (arg_running_as == SYSTEMD_SYSTEM)
80876c20
LP		 1501 /* Become a session leader if we aren't one yet. */
1502 setsid();
4ade7963 1503
befb5b6a
LP		 1504 /* Move out of the way, so that we won't block unmounts */
1505 assert_se(chdir("/") == 0);
1506
2146621b
LP		 1507 /* Reset the console, but only if this is really init and we
1508 * are freshly booted */
56d96fc0
LP		 1509 if (arg_running_as == SYSTEMD_SYSTEM && arg_action == ACTION_RUN) {
1510
1511 /* If we are init, we connect stdin/stdout/stderr to
1512 * /dev/null and make sure we don't have a controlling
1513 * tty. */
1514 release_terminal();
1515
1516 if (getpid() == 1 && !skip_setup)
1517 console_setup();
1518 }
4ade7963 1519
18149b9f 1520 /* Open the logging devices, if possible and necessary */
843d2643 1521 log_open();
4ade7963 1522
b6e2f329
LP		 1523 if (arg_show_status == _SHOW_STATUS_UNSET)
1524 arg_show_status = SHOW_STATUS_YES;
1525
5373d602
LP		 1526 /* Make sure we leave a core dump without panicing the
1527 * kernel. */
ab422445 1528 if (getpid() == 1) {
4fc935ca 1529 install_crash_handler();
97c4f35c 1530
0c85a4f3
LP		 1531 r = mount_cgroup_controllers(arg_join_controllers);
1532 if (r < 0)
1533 goto finish;
1534 }
1535
67445f4e 1536 if (arg_running_as == SYSTEMD_SYSTEM) {
c20f5ac7
LP		 1537 const char *virtualization = NULL;
1538
0d8c31ff
ZJS		 1539 log_info(PACKAGE_STRING " running in %ssystem mode. (" SYSTEMD_FEATURES ")",
1540 arg_action == ACTION_TEST ? "test " : "" );
c20f5ac7
LP		 1541
1542 detect_virtualization(&virtualization);
1543 if (virtualization)
1544 log_info("Detected virtualization '%s'.", virtualization);
1545
fdd25311
LP		 1546 write_container_id();
1547
d9d93745
LP		 1548 log_info("Detected architecture '%s'.", architecture_to_string(uname_architecture()));
1549
26a1efdf
LP		 1550 if (in_initrd())
1551 log_info("Running in initial RAM disk.");
1552
3408ba01
LP		 1553 /* Let's check whether /etc is already populated. We
1554 * don't actually really check for that, but use
1555 * /etc/machine-id as flag file. This allows container
1556 * managers and installers to provision a couple of
1557 * files already. If the container manager wants to
1558 * provision the machine ID itself it should pass
1559 * $container_uuid to PID 1.*/
1560
baa1bdf7 1561 empty_etc = access("/etc/machine-id", F_OK) < 0;
5f5c2f38
LP		 1562 if (empty_etc)
1563 log_info("Running with unpopulated /etc.");
d8160f21 1564 } else {
1f97091d
LP		 1565 _cleanup_free_ char *t;
1566
1567 t = uid_to_name(getuid());
0d8c31ff
ZJS		 1568 log_debug(PACKAGE_STRING " running in %suser mode for user "UID_FMT"/%s. (" SYSTEMD_FEATURES ")",
1569 arg_action == ACTION_TEST ? " test" : "", getuid(), t);
d8160f21 1570 }
a5dab5ce 1571
67445f4e 1572 if (arg_running_as == SYSTEMD_SYSTEM && !skip_setup) {
d450b6f2 1573 if (arg_show_status > 0 || plymouth_running())
888c6216
LP		 1574 status_welcome();
1575
888c6216 1576 hostname_setup();
489388fb 1577 machine_id_setup(NULL);
888c6216 1578 loopback_setup();
490aed58 1579
6ee5bbf8 1580 test_mtab();
80758717 1581 test_usr();
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
3a43da28 1587 if (arg_timer_slack_nsec != NSEC_INFINITY)
aa0f64ac
LP		 1588 if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
1589 log_error("Failed to adjust timer slack: %m");
1590
ec8927ca 1591 if (arg_capability_bounding_set_drop) {
31c885e9 1592 r = capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop);
ec8927ca 1593 if (r < 0) {
da927ba9 1594 log_emergency_errno(r, "Failed to drop capability bounding set of usermode helpers: %m");
cb6531be 1595 error_message = "Failed to drop capability bounding set of usermode helpers";
ec8927ca
LP		 1596 goto finish;
1597 }
31c885e9 1598 r = capability_bounding_set_drop(arg_capability_bounding_set_drop, true);
939b8f14 1599 if (r < 0) {
da927ba9 1600 log_emergency_errno(r, "Failed to drop capability bounding set: %m");
cb6531be 1601 error_message = "Failed to drop capability bounding set";
939b8f14
LP		 1602 goto finish;
1603 }
ec8927ca
LP		 1604 }
1605
d3b1c508
LP		 1606 if (arg_syscall_archs) {
1607 r = enforce_syscall_archs(arg_syscall_archs);
cb6531be
ZJS		 1608 if (r < 0) {
1609 error_message = "Failed to set syscall architectures";
d3b1c508 1610 goto finish;
cb6531be 1611 }
d3b1c508
LP		 1612 }
1613
67445f4e 1614 if (arg_running_as == SYSTEMD_USER) {
d4447f4d 1615 /* Become reaper of our children */
8b8ffe68
LP		 1616 if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0) {
1617 log_warning("Failed to make us a subreaper: %m");
1618 if (errno == EINVAL)
ddfa5101 1619 log_info("Perhaps the kernel version is too old (< 3.4?)");
8b8ffe68 1620 }
d4447f4d
AK		 1621 }
1622
5f5c2f38 1623 if (arg_running_as == SYSTEMD_SYSTEM) {
4096d6f5
LP		 1624 bump_rlimit_nofile(&saved_rlimit_nofile);
1625
5f5c2f38
LP		 1626 if (empty_etc) {
1627 r = unit_file_preset_all(UNIT_FILE_SYSTEM, false, NULL, UNIT_FILE_PRESET_FULL, false, NULL, 0);
1628 if (r < 0)
da927ba9 1629 log_warning_errno(r, "Failed to populate /etc with preset unit settings, ignoring: %m");
5f5c2f38
LP		 1630 else
1631 log_info("Populated /etc with preset unit settings.");
1632 }
1633 }
1634
0d8c31ff 1635 r = manager_new(arg_running_as, arg_action == ACTION_TEST, &m);
e96d6be7 1636 if (r < 0) {
da927ba9 1637 log_emergency_errno(r, "Failed to allocate manager object: %m");
cb6531be 1638 error_message = "Failed to allocate manager object";
60918275
LP		 1639 goto finish;
1640 }
1641
9e58ff9c 1642 m->confirm_spawn = arg_confirm_spawn;
bd8f585b 1643 m->default_timer_accuracy_usec = arg_default_timer_accuracy_usec;
0a494f1f
LP		 1644 m->default_std_output = arg_default_std_output;
1645 m->default_std_error = arg_default_std_error;
1f19a534
OS		 1646 m->default_restart_usec = arg_default_restart_usec;
1647 m->default_timeout_start_usec = arg_default_timeout_start_usec;
1648 m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
3f41e1e5
LN		 1649 m->default_start_limit_interval = arg_default_start_limit_interval;
1650 m->default_start_limit_burst = arg_default_start_limit_burst;
085afe36
LP		 1651 m->default_cpu_accounting = arg_default_cpu_accounting;
1652 m->default_blockio_accounting = arg_default_blockio_accounting;
1653 m->default_memory_accounting = arg_default_memory_accounting;
e96d6be7
LP		 1654 m->runtime_watchdog = arg_runtime_watchdog;
1655 m->shutdown_watchdog = arg_shutdown_watchdog;
2928b0a8 1656
c3a170f3
HH		 1657 m->userspace_timestamp = userspace_timestamp;
1658 m->kernel_timestamp = kernel_timestamp;
c3a170f3 1659 m->initrd_timestamp = initrd_timestamp;
c2e0d600
TA		 1660 m->security_start_timestamp = security_start_timestamp;
1661 m->security_finish_timestamp = security_finish_timestamp;
9e58ff9c 1662
c93ff2e9 1663 manager_set_default_rlimits(m, arg_default_rlimit);
b6e2f329 1664 manager_environment_add(m, NULL, arg_default_environment);
27d340c7 1665 manager_set_show_status(m, arg_show_status);
e2680723 1666 manager_set_first_boot(m, empty_etc);
27d340c7 1667
bf4df7c3 1668 /* Remember whether we should queue the default job */
d3b1c508 1669 queue_default_job = !arg_serialization || arg_switched_root;
bf4df7c3 1670
9d76d730
LP		 1671 before_startup = now(CLOCK_MONOTONIC);
1672
d3b1c508 1673 r = manager_startup(m, arg_serialization, fds);
e96d6be7 1674 if (r < 0)
da927ba9 1675 log_error_errno(r, "Failed to fully start up daemon: %m");
a16e1123 1676
bf4df7c3
LP		 1677 /* This will close all file descriptors that were opened, but
1678 * not claimed by any unit. */
01e10de3 1679 fdset_free(fds);
6c081276 1680 fds = NULL;
f50e0a01 1681
d3b1c508
LP		 1682 if (arg_serialization) {
1683 fclose(arg_serialization);
1684 arg_serialization = NULL;
bf4df7c3
LP		 1685 }
1686
1687 if (queue_default_job) {
718db961 1688 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1c27d3f3 1689 Unit *target = NULL;
bacbccb7 1690 Job *default_unit_job;
398ef8ba 1691
fa0f4d8a 1692 log_debug("Activating default unit: %s", arg_default_unit);
a16e1123 1693
e96d6be7 1694 r = manager_load_unit(m, arg_default_unit, NULL, &error, &target);
718db961
LP		 1695 if (r < 0)
1696 log_error("Failed to load default target: %s", bus_error_message(&error, r));
1697 else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND)
c33b3297 1698 log_error_errno(target->load_error, "Failed to load default target: %m");
ac155bb8 1699 else if (target->load_state == UNIT_MASKED)
6daf4f90 1700 log_error("Default target masked.");
27b14a22 1701
ac155bb8 1702 if (!target || target->load_state != UNIT_LOADED) {
a16e1123 1703 log_info("Trying to load rescue target...");
1c27d3f3 1704
e96d6be7
LP		 1705 r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target);
1706 if (r < 0) {
4104970e 1707 log_emergency("Failed to load rescue target: %s", bus_error_message(&error, r));
cb6531be 1708 error_message = "Failed to load rescue target";
a16e1123 1709 goto finish;
11ddb6f4 1710 } else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND) {
c33b3297 1711 log_emergency_errno(target->load_error, "Failed to load rescue target: %m");
cb6531be 1712 error_message = "Failed to load rescue target";
1c27d3f3 1713 goto finish;
ac155bb8 1714 } else if (target->load_state == UNIT_MASKED) {
4104970e 1715 log_emergency("Rescue target masked.");
cb6531be 1716 error_message = "Rescue target masked";
00dc5d76 1717 goto finish;
a16e1123
LP		 1718 }
1719 }
37d88da7 1720
ac155bb8 1721 assert(target->load_state == UNIT_LOADED);
00dc5d76 1722
fa0f4d8a 1723 if (arg_action == ACTION_TEST) {
40d50879 1724 printf("-> By units:\n");
a16e1123
LP		 1725 manager_dump_units(m, stdout, "\t");
1726 }
1727
95f1b47d 1728 r = manager_add_job(m, JOB_START, target, JOB_ISOLATE, false, &error, &default_unit_job);
ab17a050 1729 if (r == -EPERM) {
718db961 1730 log_debug("Default target could not be isolated, starting instead: %s", bus_error_message(&error, r));
ab17a050
LP		 1731
1732 r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, &default_unit_job);
1733 if (r < 0) {
4104970e 1734 log_emergency("Failed to start default target: %s", bus_error_message(&error, r));
cb6531be 1735 error_message = "Failed to start default target";
ab17a050
LP		 1736 goto finish;
1737 }
1738 } else if (r < 0) {
4104970e 1739 log_emergency("Failed to isolate default target: %s", bus_error_message(&error, r));
cb6531be 1740 error_message = "Failed to isolate default target";
37d88da7
LP		 1741 goto finish;
1742 }
ab17a050 1743
bacbccb7 1744 m->default_unit_job_id = default_unit_job->id;
60918275 1745
07672f49
LP		 1746 after_startup = now(CLOCK_MONOTONIC);
1747 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
1748 "Loaded units and determined initial transaction in %s.",
fdb14b7e 1749 format_timespan(timespan, sizeof(timespan), after_startup - before_startup, 100 * USEC_PER_MSEC));
07672f49 1750
fa0f4d8a 1751 if (arg_action == ACTION_TEST) {
40d50879 1752 printf("-> By jobs:\n");
a16e1123 1753 manager_dump_jobs(m, stdout, "\t");
22f4096c 1754 retval = EXIT_SUCCESS;
a16e1123
LP		 1755 goto finish;
1756 }
e965d56d 1757 }
d46de8a1 1758
a16e1123 1759 for (;;) {
e96d6be7
LP		 1760 r = manager_loop(m);
1761 if (r < 0) {
da927ba9 1762 log_emergency_errno(r, "Failed to run main loop: %m");
cb6531be 1763 error_message = "Failed to run main loop";
a16e1123
LP		 1764 goto finish;
1765 }
11dd41ce 1766
a16e1123 1767 switch (m->exit_code) {
e965d56d 1768
a16e1123 1769 case MANAGER_EXIT:
22f4096c 1770 retval = EXIT_SUCCESS;
a16e1123
LP		 1771 log_debug("Exit.");
1772 goto finish;
e965d56d 1773
a16e1123 1774 case MANAGER_RELOAD:
e015090f 1775 log_info("Reloading.");
e96d6be7
LP		 1776 r = manager_reload(m);
1777 if (r < 0)
da927ba9 1778 log_error_errno(r, "Failed to reload: %m");
a16e1123 1779 break;
cea8e32e 1780
a16e1123 1781 case MANAGER_REEXECUTE:
664f88a7 1782
cb6531be
ZJS		 1783 if (prepare_reexecute(m, &arg_serialization, &fds, false) < 0) {
1784 error_message = "Failed to prepare for reexection";
a16e1123 1785 goto finish;
cb6531be 1786 }
60918275 1787
a16e1123 1788 reexecute = true;
e015090f 1789 log_notice("Reexecuting.");
a16e1123
LP		 1790 goto finish;
1791
664f88a7
LP		 1792 case MANAGER_SWITCH_ROOT:
1793 /* Steal the switch root parameters */
41669317 1794 switch_root_dir = m->switch_root;
664f88a7
LP		 1795 switch_root_init = m->switch_root_init;
1796 m->switch_root = m->switch_root_init = NULL;
1797
1798 if (!switch_root_init)
cb6531be
ZJS		 1799 if (prepare_reexecute(m, &arg_serialization, &fds, true) < 0) {
1800 error_message = "Failed to prepare for reexection";
664f88a7 1801 goto finish;
cb6531be 1802 }
664f88a7
LP		 1803
1804 reexecute = true;
1805 log_notice("Switching root.");
1806 goto finish;
1807
b9080b03
FF		 1808 case MANAGER_REBOOT:
1809 case MANAGER_POWEROFF:
1810 case MANAGER_HALT:
1811 case MANAGER_KEXEC: {
1812 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1813 [MANAGER_REBOOT] = "reboot",
1814 [MANAGER_POWEROFF] = "poweroff",
1815 [MANAGER_HALT] = "halt",
1816 [MANAGER_KEXEC] = "kexec"
1817 };
1818
1819 assert_se(shutdown_verb = table[m->exit_code]);
e96d6be7 1820 arm_reboot_watchdog = m->exit_code == MANAGER_REBOOT;
b9080b03
FF		 1821
1822 log_notice("Shutting down.");
1823 goto finish;
1824 }
1825
a16e1123
LP		 1826 default:
1827 assert_not_reached("Unknown exit code.");
1828 }
1829 }
f170852a 1830
60918275 1831finish:
b87c2aa6
ZJS		 1832 pager_close();
1833
06d8d842 1834 m = manager_free(m);
60918275 1835
d3b1c508 1836 for (j = 0; j < ELEMENTSOF(arg_default_rlimit); j++) {
4096d6f5 1837 free(arg_default_rlimit[j]);
d3b1c508
LP		 1838 arg_default_rlimit[j] = NULL;
1839 }
c93ff2e9 1840
fa0f4d8a 1841 free(arg_default_unit);
d3b1c508
LP		 1842 arg_default_unit = NULL;
1843
0c85a4f3 1844 free_join_controllers();
b9cd2ec1 1845
d3b1c508
LP		 1846 strv_free(arg_default_environment);
1847 arg_default_environment = NULL;
1848
1849 set_free(arg_syscall_archs);
1850 arg_syscall_archs = NULL;
1851
cc56fafe 1852 mac_selinux_finish();
b2bb3dbe 1853
a16e1123 1854 if (reexecute) {
664f88a7 1855 const char **args;
e564a982 1856 unsigned i, args_size;
a16e1123 1857
664f88a7
LP		 1858 /* Close and disarm the watchdog, so that the new
1859 * instance can reinitialize it, but doesn't get
1860 * rebooted while we do that */
1861 watchdog_close(true);
a16e1123 1862
4096d6f5
LP		 1863 /* Reset the RLIMIT_NOFILE to the kernel default, so
1864 * that the new systemd can pass the kernel default to
1865 * its child processes */
1866 if (saved_rlimit_nofile.rlim_cur > 0)
1867 setrlimit(RLIMIT_NOFILE, &saved_rlimit_nofile);
1868
41669317 1869 if (switch_root_dir) {
cee530bb
LP		 1870 /* Kill all remaining processes from the
1871 * initrd, but don't wait for them, so that we
1872 * can handle the SIGCHLD for them after
1873 * deserializing. */
0bee65f0 1874 broadcast_signal(SIGTERM, false, true);
bd3fa1d2 1875
5a4bf02f
HH		 1876 /* And switch root with MS_MOVE, because we remove the old directory afterwards and detach it. */
1877 r = switch_root(switch_root_dir, "/mnt", true, MS_MOVE);
41669317 1878 if (r < 0)
da927ba9 1879 log_error_errno(r, "Failed to switch root, trying to continue: %m");
41669317 1880 }
a16e1123 1881
d03bc1b8 1882 args_size = MAX(6, argc+1);
e564a982 1883 args = newa(const char*, args_size);
a16e1123 1884
664f88a7
LP		 1885 if (!switch_root_init) {
1886 char sfd[16];
a16e1123 1887
664f88a7
LP		 1888 /* First try to spawn ourselves with the right
1889 * path, and with full serialization. We do
1890 * this only if the user didn't specify an
1891 * explicit init to spawn. */
edb9aaa8 1892
d3b1c508 1893 assert(arg_serialization);
664f88a7 1894 assert(fds);
edb9aaa8 1895
d3b1c508 1896 snprintf(sfd, sizeof(sfd), "%i", fileno(arg_serialization));
664f88a7 1897 char_array_0(sfd);
edb9aaa8 1898
664f88a7
LP		 1899 i = 0;
1900 args[i++] = SYSTEMD_BINARY_PATH;
41669317 1901 if (switch_root_dir)
2660882b 1902 args[i++] = "--switched-root";
67445f4e 1903 args[i++] = arg_running_as == SYSTEMD_SYSTEM ? "--system" : "--user";
664f88a7
LP		 1904 args[i++] = "--deserialize";
1905 args[i++] = sfd;
1906 args[i++] = NULL;
edb9aaa8 1907
ce8aba56
KS		 1908 /* do not pass along the environment we inherit from the kernel or initrd */
1909 if (switch_root_dir)
1910 clearenv();
1911
e564a982 1912 assert(i <= args_size);
664f88a7
LP		 1913 execv(args[0], (char* const*) args);
1914 }
6e98720f 1915
664f88a7
LP		 1916 /* Try the fallback, if there is any, without any
1917 * serialization. We pass the original argv[] and
1918 * envp[]. (Well, modulo the ordering changes due to
1919 * getopt() in argv[], and some cleanups in envp[],
1920 * but let's hope that doesn't matter.) */
a16e1123 1921
d3b1c508
LP		 1922 if (arg_serialization) {
1923 fclose(arg_serialization);
1924 arg_serialization = NULL;
b8f83232 1925 }
a16e1123 1926
b8f83232 1927 if (fds) {
664f88a7 1928 fdset_free(fds);
b8f83232
LP		 1929 fds = NULL;
1930 }
a16e1123 1931
a504223d
HH		 1932 /* Reopen the console */
1933 make_console_stdio();
1934
d3b1c508 1935 for (j = 1, i = 1; j < (unsigned) argc; j++)
664f88a7 1936 args[i++] = argv[j];
a16e1123 1937 args[i++] = NULL;
e564a982 1938 assert(i <= args_size);
b8f83232 1939
1b6d7fa7 1940 /* Reenable any blocked signals, especially important
5a85ca1c 1941 * if we switch from initial ramdisk to init=... */
9bfcda95 1942 reset_all_signal_handlers();
1b6d7fa7 1943 reset_signal_mask();
5a85ca1c 1944
b8f83232
LP		 1945 if (switch_root_init) {
1946 args[0] = switch_root_init;
1947 execv(args[0], (char* const*) args);
1948 log_warning("Failed to execute configured init, trying fallback: %m");
1949 }
1950
1951 args[0] = "/sbin/init";
a16e1123
LP		 1952 execv(args[0], (char* const*) args);
1953
745e2fb7
KS		 1954 if (errno == ENOENT) {
1955 log_warning("No /sbin/init, trying fallback");
b8f83232 1956
745e2fb7
KS		 1957 args[0] = "/bin/sh";
1958 args[1] = NULL;
1959 execv(args[0], (char* const*) args);
1960 log_error("Failed to execute /bin/sh, giving up: %m");
1961 } else
1962 log_warning("Failed to execute /sbin/init, giving up: %m");
a16e1123
LP		 1963 }
1964
d3b1c508
LP		 1965 if (arg_serialization) {
1966 fclose(arg_serialization);
1967 arg_serialization = NULL;
1968 }
a16e1123 1969
d3b1c508 1970 if (fds) {
a16e1123 1971 fdset_free(fds);
d3b1c508
LP		 1972 fds = NULL;
1973 }
a16e1123 1974
54b434b1
LP		 1975#ifdef HAVE_VALGRIND_VALGRIND_H
1976 /* If we are PID 1 and running under valgrind, then let's exit
1977 * here explicitly. valgrind will only generate nice output on
1978 * exit(), not on exec(), hence let's do the former not the
1979 * latter here. */
1980 if (getpid() == 1 && RUNNING_ON_VALGRIND)
1981 return 0;
1982#endif
1983
b9080b03 1984 if (shutdown_verb) {
b1e90ec5
ZJS		 1985 char log_level[DECIMAL_STR_MAX(int) + 1];
1986 const char* command_line[9] = {
b9080b03
FF		 1987 SYSTEMD_SHUTDOWN_BINARY_PATH,
1988 shutdown_verb,
b1e90ec5
ZJS		 1989 "--log-level", log_level,
1990 "--log-target",
b9080b03 1991 };
b1e90ec5 1992 unsigned pos = 5;
e3e45d4f 1993 _cleanup_strv_free_ char **env_block = NULL;
15bd5aee
LP		 1994
1995 assert(command_line[pos] == NULL);
e3e45d4f 1996 env_block = strv_copy(environ);
b9080b03 1997
b1e90ec5
ZJS		 1998 snprintf(log_level, sizeof(log_level), "%d", log_get_max_level());
1999
2000 switch (log_get_target()) {
2001 case LOG_TARGET_KMSG:
2002 case LOG_TARGET_JOURNAL_OR_KMSG:
2003 case LOG_TARGET_SYSLOG_OR_KMSG:
2004 command_line[pos++] = "kmsg";
2005 break;
2006
2007 case LOG_TARGET_CONSOLE:
2008 default:
2009 command_line[pos++] = "console";
2010 break;
2011 };
2012
2013 if (log_get_show_color())
2014 command_line[pos++] = "--log-color";
2015
2016 if (log_get_show_location())
2017 command_line[pos++] = "--log-location";
2018
26abdc73 2019 assert(pos < ELEMENTSOF(command_line));
b1e90ec5 2020
e96d6be7 2021 if (arm_reboot_watchdog && arg_shutdown_watchdog > 0) {
e3e45d4f 2022 char *e;
d18f337c 2023
e96d6be7
LP		 2024 /* If we reboot let's set the shutdown
2025 * watchdog and tell the shutdown binary to
2026 * repeatedly ping it */
2027 watchdog_set_timeout(&arg_shutdown_watchdog);
2028 watchdog_close(false);
2029
e3e45d4f
SP		 2030 /* Tell the binary how often to ping, ignore failure */
2031 if (asprintf(&e, "WATCHDOG_USEC="USEC_FMT, arg_shutdown_watchdog) > 0)
2032 strv_push(&env_block, e);
2033 } else
e96d6be7
LP		 2034 watchdog_close(true);
2035
66713f77
LP		 2036 /* Avoid the creation of new processes forked by the
2037 * kernel; at this point, we will not listen to the
2038 * signals anyway */
2039 if (detect_container(NULL) <= 0)
2040 cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
ad929bcc 2041
d18f337c 2042 execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
b1e90ec5
ZJS		 2043 log_error("Failed to execute shutdown binary, %s: %m",
2044 getpid() == 1 ? "freezing" : "quitting");
b9080b03
FF		 2045 }
2046
cb6531be
ZJS		 2047 if (getpid() == 1) {
2048 if (error_message)
2049 manager_status_printf(NULL, STATUS_TYPE_EMERGENCY,
2050 ANSI_HIGHLIGHT_RED_ON "!!!!!!" ANSI_HIGHLIGHT_OFF,
2051 "%s, freezing.", error_message);
c3b3c274 2052 freeze();
cb6531be 2053 }
c3b3c274 2054
60918275
LP		 2055 return retval;
2056}
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