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timedate: make NTP controllable too
[thirdparty/systemd.git] / src / main.c
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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
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
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>
60918275
LP		 35
36#include "manager.h"
16354eff 37#include "log.h"
4ade7963 38#include "mount-setup.h"
302e8c4c 39#include "hostname-setup.h"
af5bc85d 40#include "loopback-setup.h"
11c3a4ee 41#include "kmod-setup.h"
72bca11b 42#include "locale-setup.h"
c4dcdb9f 43#include "selinux-setup.h"
d7ccca2e 44#include "machine-id-setup.h"
302e8c4c 45#include "load-fragment.h"
a16e1123 46#include "fdset.h"
514f4ef5 47#include "special.h"
487393e9 48#include "conf-parser.h"
398ef8ba 49#include "bus-errors.h"
ad780f19 50#include "missing.h"
e51bc1a2 51#include "label.h"
302e27c8 52#include "build.h"
06d4c99a 53#include "strv.h"
f6a6225e 54#include "def.h"
60918275 55
f170852a
LP		 56static enum {
57 ACTION_RUN,
e965d56d 58 ACTION_HELP,
e537352b 59 ACTION_TEST,
4288f619
LP		 60 ACTION_DUMP_CONFIGURATION_ITEMS,
61 ACTION_DONE
fa0f4d8a 62} arg_action = ACTION_RUN;
f170852a 63
fa0f4d8a
LP		 64static char *arg_default_unit = NULL;
65static ManagerRunningAs arg_running_as = _MANAGER_RUNNING_AS_INVALID;
66
67static bool arg_dump_core = true;
68static bool arg_crash_shell = false;
69static int arg_crash_chvt = -1;
70static bool arg_confirm_spawn = false;
9e58ff9c 71static bool arg_show_status = true;
07459bb6 72#ifdef HAVE_SYSV_COMPAT
6e98720f 73static bool arg_sysv_console = true;
07459bb6 74#endif
d3689161 75static bool arg_mount_auto = true;
173a8d04 76static bool arg_swap_auto = true;
06d4c99a 77static char **arg_default_controllers = NULL;
934da035 78static ExecOutput arg_default_std_output = EXEC_OUTPUT_INHERIT;
0a494f1f 79static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
4fc935ca 80
a16e1123 81static FILE* serialization = NULL;
80876c20 82
6f5e3f35
LP		 83static void nop_handler(int sig) {
84}
85
93a46b0b 86_noreturn_ static void crash(int sig) {
97c4f35c 87
fa0f4d8a 88 if (!arg_dump_core)
582a507f 89 log_error("Caught <%s>, not dumping core.", signal_to_string(sig));
97c4f35c 90 else {
6f5e3f35 91 struct sigaction sa;
97c4f35c
LP		 92 pid_t pid;
93
6f5e3f35
LP		 94 /* We want to wait for the core process, hence let's enable SIGCHLD */
95 zero(sa);
96 sa.sa_handler = nop_handler;
97 sa.sa_flags = SA_NOCLDSTOP|SA_RESTART;
98 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
99
97c4f35c 100 if ((pid = fork()) < 0)
582a507f 101 log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig), strerror(errno));
97c4f35c
LP		 102
103 else if (pid == 0) {
97c4f35c
LP		 104 struct rlimit rl;
105
106 /* Enable default signal handler for core dump */
107 zero(sa);
108 sa.sa_handler = SIG_DFL;
109 assert_se(sigaction(sig, &sa, NULL) == 0);
110
111 /* Don't limit the core dump size */
112 zero(rl);
113 rl.rlim_cur = RLIM_INFINITY;
114 rl.rlim_max = RLIM_INFINITY;
115 setrlimit(RLIMIT_CORE, &rl);
116
117 /* Just to be sure... */
118 assert_se(chdir("/") == 0);
119
120 /* Raise the signal again */
121 raise(sig);
122
123 assert_not_reached("We shouldn't be here...");
124 _exit(1);
4fc935ca
LP		 125
126 } else {
8e12a6ae
LP		 127 siginfo_t status;
128 int r;
4fc935ca
LP		 129
130 /* Order things nicely. */
8e12a6ae
LP		 131 if ((r = wait_for_terminate(pid, &status)) < 0)
132 log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig), strerror(-r));
133 else if (status.si_code != CLD_DUMPED)
582a507f 134 log_error("Caught <%s>, core dump failed.", signal_to_string(sig));
4fc935ca 135 else
582a507f 136 log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig), (unsigned long) pid);
97c4f35c
LP		 137 }
138 }
139
fa0f4d8a
LP		 140 if (arg_crash_chvt)
141 chvt(arg_crash_chvt);
601f6a1e 142
fa0f4d8a 143 if (arg_crash_shell) {
6f5e3f35
LP		 144 struct sigaction sa;
145 pid_t pid;
8c43883a 146
4fc935ca
LP		 147 log_info("Executing crash shell in 10s...");
148 sleep(10);
149
6f5e3f35
LP		 150 /* Let the kernel reap children for us */
151 zero(sa);
152 sa.sa_handler = SIG_IGN;
153 sa.sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART;
154 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
8c43883a 155
6f5e3f35
LP		 156 if ((pid = fork()) < 0)
157 log_error("Failed to fork off crash shell: %s", strerror(errno));
158 else if (pid == 0) {
843d2643 159 int fd, r;
ea5652c2 160
21de3988 161 if ((fd = acquire_terminal("/dev/console", false, true, true)) < 0)
ea5652c2 162 log_error("Failed to acquire terminal: %s", strerror(-fd));
5b2a0903 163 else if ((r = make_stdio(fd)) < 0)
843d2643 164 log_error("Failed to duplicate terminal fd: %s", strerror(-r));
ea5652c2 165
6f5e3f35
LP		 166 execl("/bin/sh", "/bin/sh", NULL);
167
168 log_error("execl() failed: %s", strerror(errno));
169 _exit(1);
170 }
c99b188e 171
f8e08a77 172 log_info("Successfully spawned crash shell as pid %lu.", (unsigned long) pid);
4fc935ca
LP		 173 }
174
175 log_info("Freezing execution.");
97c4f35c
LP		 176 freeze();
177}
178
179static void install_crash_handler(void) {
180 struct sigaction sa;
181
182 zero(sa);
183
184 sa.sa_handler = crash;
185 sa.sa_flags = SA_NODEFER;
186
1b91d3e8 187 sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
97c4f35c 188}
f170852a 189
843d2643
LP		 190static int console_setup(bool do_reset) {
191 int tty_fd, r;
80876c20 192
843d2643
LP		 193 /* If we are init, we connect stdin/stdout/stderr to /dev/null
194 * and make sure we don't have a controlling tty. */
80876c20 195
843d2643
LP		 196 release_terminal();
197
198 if (!do_reset)
199 return 0;
80876c20 200
843d2643
LP		 201 if ((tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC)) < 0) {
202 log_error("Failed to open /dev/console: %s", strerror(-tty_fd));
203 return -tty_fd;
204 }
80876c20 205
6ea832a2 206 if ((r = reset_terminal_fd(tty_fd)) < 0)
843d2643
LP		 207 log_error("Failed to reset /dev/console: %s", strerror(-r));
208
209 close_nointr_nofail(tty_fd);
80876c20
LP		 210 return r;
211}
212
f170852a
LP		 213static int set_default_unit(const char *u) {
214 char *c;
215
216 assert(u);
217
218 if (!(c = strdup(u)))
219 return -ENOMEM;
220
fa0f4d8a
LP		 221 free(arg_default_unit);
222 arg_default_unit = c;
f170852a
LP		 223 return 0;
224}
225
226static int parse_proc_cmdline_word(const char *word) {
227
228 static const char * const rlmap[] = {
ed370f5d 229 "emergency", SPECIAL_EMERGENCY_TARGET,
099663ff 230 "-b", SPECIAL_EMERGENCY_TARGET,
ed370f5d
LP		 231 "single", SPECIAL_RESCUE_TARGET,
232 "-s", SPECIAL_RESCUE_TARGET,
233 "s", SPECIAL_RESCUE_TARGET,
234 "S", SPECIAL_RESCUE_TARGET,
235 "1", SPECIAL_RESCUE_TARGET,
236 "2", SPECIAL_RUNLEVEL2_TARGET,
237 "3", SPECIAL_RUNLEVEL3_TARGET,
238 "4", SPECIAL_RUNLEVEL4_TARGET,
239 "5", SPECIAL_RUNLEVEL5_TARGET,
f170852a
LP		 240 };
241
5192bd19
LP		 242 assert(word);
243
2f198e2f
LP		 244 if (startswith(word, "systemd.unit="))
245 return set_default_unit(word + 13);
f170852a
LP		 246
247 else if (startswith(word, "systemd.log_target=")) {
248
249 if (log_set_target_from_string(word + 19) < 0)
250 log_warning("Failed to parse log target %s. Ignoring.", word + 19);
251
252 } else if (startswith(word, "systemd.log_level=")) {
253
254 if (log_set_max_level_from_string(word + 18) < 0)
255 log_warning("Failed to parse log level %s. Ignoring.", word + 18);
256
bbe63281
LP		 257 } else if (startswith(word, "systemd.log_color=")) {
258
259 if (log_show_color_from_string(word + 18) < 0)
260 log_warning("Failed to parse log color setting %s. Ignoring.", word + 18);
261
262 } else if (startswith(word, "systemd.log_location=")) {
263
264 if (log_show_location_from_string(word + 21) < 0)
265 log_warning("Failed to parse log location setting %s. Ignoring.", word + 21);
266
4fc935ca
LP		 267 } else if (startswith(word, "systemd.dump_core=")) {
268 int r;
269
270 if ((r = parse_boolean(word + 18)) < 0)
601f6a1e 271 log_warning("Failed to parse dump core switch %s, Ignoring.", word + 18);
4fc935ca 272 else
fa0f4d8a 273 arg_dump_core = r;
4fc935ca
LP		 274
275 } else if (startswith(word, "systemd.crash_shell=")) {
276 int r;
277
278 if ((r = parse_boolean(word + 20)) < 0)
601f6a1e 279 log_warning("Failed to parse crash shell switch %s, Ignoring.", word + 20);
4fc935ca 280 else
fa0f4d8a 281 arg_crash_shell = r;
5e7ee61c
LP		 282
283 } else if (startswith(word, "systemd.confirm_spawn=")) {
284 int r;
285
286 if ((r = parse_boolean(word + 22)) < 0)
287 log_warning("Failed to parse confirm spawn switch %s, Ignoring.", word + 22);
288 else
fa0f4d8a 289 arg_confirm_spawn = r;
5e7ee61c 290
601f6a1e
LP		 291 } else if (startswith(word, "systemd.crash_chvt=")) {
292 int k;
293
294 if (safe_atoi(word + 19, &k) < 0)
295 log_warning("Failed to parse crash chvt switch %s, Ignoring.", word + 19);
296 else
fa0f4d8a 297 arg_crash_chvt = k;
601f6a1e 298
9e58ff9c
LP		 299 } else if (startswith(word, "systemd.show_status=")) {
300 int r;
301
302 if ((r = parse_boolean(word + 20)) < 0)
303 log_warning("Failed to parse show status switch %s, Ignoring.", word + 20);
6e98720f 304 else
9e58ff9c 305 arg_show_status = r;
0a494f1f
LP		 306 } else if (startswith(word, "systemd.default_standard_output=")) {
307 int r;
308
309 if ((r = exec_output_from_string(word + 32)) < 0)
310 log_warning("Failed to parse default standard output switch %s, Ignoring.", word + 32);
311 else
312 arg_default_std_output = r;
313 } else if (startswith(word, "systemd.default_standard_error=")) {
314 int r;
315
316 if ((r = exec_output_from_string(word + 31)) < 0)
317 log_warning("Failed to parse default standard error switch %s, Ignoring.", word + 31);
318 else
319 arg_default_std_error = r;
07459bb6 320#ifdef HAVE_SYSV_COMPAT
6e98720f
LP		 321 } else if (startswith(word, "systemd.sysv_console=")) {
322 int r;
323
324 if ((r = parse_boolean(word + 21)) < 0)
325 log_warning("Failed to parse SysV console switch %s, Ignoring.", word + 20);
326 else
327 arg_sysv_console = r;
07459bb6 328#endif
9e58ff9c 329
4fc935ca
LP		 330 } else if (startswith(word, "systemd.")) {
331
332 log_warning("Unknown kernel switch %s. Ignoring.", word);
333
bbe63281
LP		 334 log_info("Supported kernel switches:\n"
335 "systemd.unit=UNIT Default unit to start\n"
bbe63281 336 "systemd.dump_core=0|1 Dump core on crash\n"
9e58ff9c 337 "systemd.crash_shell=0|1 Run shell on crash\n"
bbe63281 338 "systemd.crash_chvt=N Change to VT #N on crash\n"
9e58ff9c 339 "systemd.confirm_spawn=0|1 Confirm every process spawn\n"
6e98720f 340 "systemd.show_status=0|1 Show status updates on the console during bootup\n"
07459bb6 341#ifdef HAVE_SYSV_COMPAT
6e98720f 342 "systemd.sysv_console=0|1 Connect output of SysV scripts to console\n"
07459bb6 343#endif
87d1969b 344 "systemd.log_target=console|kmsg|syslog|syslog-or-kmsg|null\n"
6e98720f
LP		 345 " Log target\n"
346 "systemd.log_level=LEVEL Log level\n"
347 "systemd.log_color=0|1 Highlight important log messages\n"
0a494f1f
LP		 348 "systemd.log_location=0|1 Include code location in log messages\n"
349 "systemd.default_standard_output=null|tty|syslog|syslog+console|kmsg|kmsg+console\n"
350 " Set default log output for services\n"
351 "systemd.default_standard_error=null|tty|syslog|syslog+console|kmsg|kmsg+console\n"
352 " Set default log error output for services\n");
4fc935ca 353
a9c501a5 354 } else if (streq(word, "quiet")) {
6e98720f 355 arg_show_status = false;
07459bb6 356#ifdef HAVE_SYSV_COMPAT
6e98720f 357 arg_sysv_console = false;
07459bb6 358#endif
9e58ff9c 359 } else {
f170852a
LP		 360 unsigned i;
361
362 /* SysV compatibility */
f170852a
LP		 363 for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
364 if (streq(word, rlmap[i]))
365 return set_default_unit(rlmap[i+1]);
366 }
367
368 return 0;
369}
370
f975e971 371static int config_parse_level2(
487393e9
LP		 372 const char *filename,
373 unsigned line,
374 const char *section,
375 const char *lvalue,
3731f1ea 376 int ltype,
487393e9
LP		 377 const char *rvalue,
378 void *data,
379 void *userdata) {
380
381 assert(filename);
382 assert(lvalue);
383 assert(rvalue);
384
385 log_set_max_level_from_string(rvalue);
386 return 0;
387}
388
389static int config_parse_target(
390 const char *filename,
391 unsigned line,
392 const char *section,
393 const char *lvalue,
3731f1ea 394 int ltype,
487393e9
LP		 395 const char *rvalue,
396 void *data,
397 void *userdata) {
398
399 assert(filename);
400 assert(lvalue);
401 assert(rvalue);
402
403 log_set_target_from_string(rvalue);
404 return 0;
405}
406
407static int config_parse_color(
408 const char *filename,
409 unsigned line,
410 const char *section,
411 const char *lvalue,
3731f1ea 412 int ltype,
487393e9
LP		 413 const char *rvalue,
414 void *data,
415 void *userdata) {
416
417 assert(filename);
418 assert(lvalue);
419 assert(rvalue);
420
421 log_show_color_from_string(rvalue);
422 return 0;
423}
424
425static int config_parse_location(
426 const char *filename,
427 unsigned line,
428 const char *section,
429 const char *lvalue,
3731f1ea 430 int ltype,
487393e9
LP		 431 const char *rvalue,
432 void *data,
433 void *userdata) {
434
435 assert(filename);
436 assert(lvalue);
437 assert(rvalue);
438
439 log_show_location_from_string(rvalue);
440 return 0;
441}
442
f975e971 443static int config_parse_cpu_affinity2(
487393e9
LP		 444 const char *filename,
445 unsigned line,
446 const char *section,
447 const char *lvalue,
3731f1ea 448 int ltype,
487393e9
LP		 449 const char *rvalue,
450 void *data,
451 void *userdata) {
452
453 char *w;
454 size_t l;
455 char *state;
456 cpu_set_t *c = NULL;
457 unsigned ncpus = 0;
458
459 assert(filename);
460 assert(lvalue);
461 assert(rvalue);
462
f60f22df 463 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
487393e9
LP		 464 char *t;
465 int r;
466 unsigned cpu;
467
468 if (!(t = strndup(w, l)))
469 return -ENOMEM;
470
471 r = safe_atou(t, &cpu);
472 free(t);
473
474 if (!c)
475 if (!(c = cpu_set_malloc(&ncpus)))
476 return -ENOMEM;
477
478 if (r < 0 || cpu >= ncpus) {
479 log_error("[%s:%u] Failed to parse CPU affinity: %s", filename, line, rvalue);
480 CPU_FREE(c);
481 return -EBADMSG;
482 }
483
484 CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c);
485 }
486
487 if (c) {
488 if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0)
489 log_warning("Failed to set CPU affinity: %m");
490
491 CPU_FREE(c);
492 }
493
494 return 0;
495}
496
497static int parse_config_file(void) {
498
f975e971
LP		 499 const ConfigTableItem items[] = {
500 { "Manager", "LogLevel", config_parse_level2, 0, NULL },
501 { "Manager", "LogTarget", config_parse_target, 0, NULL },
502 { "Manager", "LogColor", config_parse_color, 0, NULL },
503 { "Manager", "LogLocation", config_parse_location, 0, NULL },
504 { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
505 { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
506 { "Manager", "ShowStatus", config_parse_bool, 0, &arg_show_status },
07459bb6 507#ifdef HAVE_SYSV_COMPAT
f975e971 508 { "Manager", "SysVConsole", config_parse_bool, 0, &arg_sysv_console },
07459bb6 509#endif
f975e971
LP		 510 { "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt },
511 { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
512 { "Manager", "MountAuto", config_parse_bool, 0, &arg_mount_auto },
513 { "Manager", "SwapAuto", config_parse_bool, 0, &arg_swap_auto },
514 { "Manager", "DefaultControllers", config_parse_strv, 0, &arg_default_controllers },
515 { "Manager", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output },
516 { "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error },
517 { NULL, NULL, NULL, 0, NULL }
487393e9
LP		 518 };
519
520 FILE *f;
521 const char *fn;
522 int r;
523
af2d49f7 524 fn = arg_running_as == MANAGER_SYSTEM ? SYSTEM_CONFIG_FILE : USER_CONFIG_FILE;
f975e971
LP		 525 f = fopen(fn, "re");
526 if (!f) {
487393e9
LP		 527 if (errno == ENOENT)
528 return 0;
529
530 log_warning("Failed to open configuration file '%s': %m", fn);
531 return 0;
532 }
533
f975e971
LP		 534 r = config_parse(fn, f, "Manager\0", config_item_table_lookup, (void*) items, false, NULL);
535 if (r < 0)
487393e9
LP		 536 log_warning("Failed to parse configuration file: %s", strerror(-r));
537
538 fclose(f);
539
540 return 0;
541}
542
f170852a 543static int parse_proc_cmdline(void) {
52661efd 544 char *line, *w, *state;
f170852a 545 int r;
f170852a 546 size_t l;
f170852a 547
b770165a
LP		 548 /* Don't read /proc/cmdline if we are in a container, since
549 * that is only relevant for the host system */
550 if (detect_container(NULL) > 0)
551 return 0;
552
f170852a 553 if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) {
e364ad06 554 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
f170852a
LP		 555 return 0;
556 }
557
558 FOREACH_WORD_QUOTED(w, l, line, state) {
559 char *word;
560
561 if (!(word = strndup(w, l))) {
562 r = -ENOMEM;
563 goto finish;
564 }
565
566 r = parse_proc_cmdline_word(word);
567 free(word);
568
569 if (r < 0)
570 goto finish;
571 }
572
573 r = 0;
574
575finish:
576 free(line);
577 return r;
578}
579
580static int parse_argv(int argc, char *argv[]) {
581
582 enum {
583 ARG_LOG_LEVEL = 0x100,
584 ARG_LOG_TARGET,
bbe63281
LP		 585 ARG_LOG_COLOR,
586 ARG_LOG_LOCATION,
2f198e2f 587 ARG_UNIT,
edb9aaa8 588 ARG_SYSTEM,
af2d49f7 589 ARG_USER,
e537352b 590 ARG_TEST,
80876c20 591 ARG_DUMP_CONFIGURATION_ITEMS,
9e58ff9c
LP		 592 ARG_DUMP_CORE,
593 ARG_CRASH_SHELL,
a16e1123 594 ARG_CONFIRM_SPAWN,
9e58ff9c 595 ARG_SHOW_STATUS,
6e98720f 596 ARG_SYSV_CONSOLE,
4288f619 597 ARG_DESERIALIZE,
0a494f1f
LP		 598 ARG_INTROSPECT,
599 ARG_DEFAULT_STD_OUTPUT,
600 ARG_DEFAULT_STD_ERROR
f170852a
LP		 601 };
602
603 static const struct option options[] = {
a16e1123
LP		 604 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
605 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
bbe63281
LP		 606 { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
607 { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
2f198e2f 608 { "unit", required_argument, NULL, ARG_UNIT },
edb9aaa8 609 { "system", no_argument, NULL, ARG_SYSTEM },
af2d49f7 610 { "user", no_argument, NULL, ARG_USER },
a16e1123
LP		 611 { "test", no_argument, NULL, ARG_TEST },
612 { "help", no_argument, NULL, 'h' },
613 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
9e58ff9c
LP		 614 { "dump-core", no_argument, NULL, ARG_DUMP_CORE },
615 { "crash-shell", no_argument, NULL, ARG_CRASH_SHELL },
a16e1123 616 { "confirm-spawn", no_argument, NULL, ARG_CONFIRM_SPAWN },
6e98720f 617 { "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
07459bb6 618#ifdef HAVE_SYSV_COMPAT
6e98720f 619 { "sysv-console", optional_argument, NULL, ARG_SYSV_CONSOLE },
07459bb6 620#endif
a16e1123 621 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
4288f619 622 { "introspect", optional_argument, NULL, ARG_INTROSPECT },
0a494f1f
LP		 623 { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
624 { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
a16e1123 625 { NULL, 0, NULL, 0 }
f170852a
LP		 626 };
627
628 int c, r;
629
630 assert(argc >= 1);
631 assert(argv);
632
b770165a
LP		 633 if (getpid() == 1)
634 opterr = 0;
635
099663ff 636 while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0)
f170852a
LP		 637
638 switch (c) {
639
640 case ARG_LOG_LEVEL:
641 if ((r = log_set_max_level_from_string(optarg)) < 0) {
642 log_error("Failed to parse log level %s.", optarg);
643 return r;
644 }
645
646 break;
647
648 case ARG_LOG_TARGET:
649
650 if ((r = log_set_target_from_string(optarg)) < 0) {
651 log_error("Failed to parse log target %s.", optarg);
652 return r;
653 }
654
655 break;
656
bbe63281
LP		 657 case ARG_LOG_COLOR:
658
d0b170c8
LP		 659 if (optarg) {
660 if ((r = log_show_color_from_string(optarg)) < 0) {
661 log_error("Failed to parse log color setting %s.", optarg);
662 return r;
663 }
664 } else
665 log_show_color(true);
bbe63281
LP		 666
667 break;
668
669 case ARG_LOG_LOCATION:
670
d0b170c8
LP		 671 if (optarg) {
672 if ((r = log_show_location_from_string(optarg)) < 0) {
673 log_error("Failed to parse log location setting %s.", optarg);
674 return r;
675 }
676 } else
677 log_show_location(true);
bbe63281
LP		 678
679 break;
680
0a494f1f
LP		 681 case ARG_DEFAULT_STD_OUTPUT:
682
683 if ((r = exec_output_from_string(optarg)) < 0) {
684 log_error("Failed to parse default standard output setting %s.", optarg);
685 return r;
686 } else
687 arg_default_std_output = r;
688 break;
689
690 case ARG_DEFAULT_STD_ERROR:
691
692 if ((r = exec_output_from_string(optarg)) < 0) {
693 log_error("Failed to parse default standard error output setting %s.", optarg);
694 return r;
695 } else
696 arg_default_std_error = r;
697 break;
698
2f198e2f 699 case ARG_UNIT:
f170852a
LP		 700
701 if ((r = set_default_unit(optarg)) < 0) {
702 log_error("Failed to set default unit %s: %s", optarg, strerror(-r));
703 return r;
704 }
705
706 break;
707
edb9aaa8
LP		 708 case ARG_SYSTEM:
709 arg_running_as = MANAGER_SYSTEM;
710 break;
a5dab5ce 711
af2d49f7
LP		 712 case ARG_USER:
713 arg_running_as = MANAGER_USER;
a5dab5ce 714 break;
a5dab5ce 715
e965d56d 716 case ARG_TEST:
fa0f4d8a 717 arg_action = ACTION_TEST;
e965d56d
LP		 718 break;
719
e537352b 720 case ARG_DUMP_CONFIGURATION_ITEMS:
fa0f4d8a 721 arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
e537352b
LP		 722 break;
723
9e58ff9c
LP		 724 case ARG_DUMP_CORE:
725 arg_dump_core = true;
726 break;
727
728 case ARG_CRASH_SHELL:
729 arg_crash_shell = true;
730 break;
731
80876c20 732 case ARG_CONFIRM_SPAWN:
fa0f4d8a 733 arg_confirm_spawn = true;
80876c20
LP		 734 break;
735
9e58ff9c 736 case ARG_SHOW_STATUS:
6e98720f
LP		 737
738 if (optarg) {
739 if ((r = parse_boolean(optarg)) < 0) {
740 log_error("Failed to show status boolean %s.", optarg);
741 return r;
742 }
743 arg_show_status = r;
744 } else
745 arg_show_status = true;
746 break;
07459bb6 747#ifdef HAVE_SYSV_COMPAT
6e98720f
LP		 748 case ARG_SYSV_CONSOLE:
749
750 if (optarg) {
751 if ((r = parse_boolean(optarg)) < 0) {
752 log_error("Failed to SysV console boolean %s.", optarg);
753 return r;
754 }
755 arg_sysv_console = r;
756 } else
757 arg_sysv_console = true;
9e58ff9c 758 break;
07459bb6 759#endif
9e58ff9c 760
a16e1123
LP		 761 case ARG_DESERIALIZE: {
762 int fd;
763 FILE *f;
764
765 if ((r = safe_atoi(optarg, &fd)) < 0 || fd < 0) {
766 log_error("Failed to parse deserialize option %s.", optarg);
767 return r;
768 }
769
770 if (!(f = fdopen(fd, "r"))) {
771 log_error("Failed to open serialization fd: %m");
772 return r;
773 }
774
775 if (serialization)
776 fclose(serialization);
777
778 serialization = f;
779
780 break;
781 }
782
4288f619
LP		 783 case ARG_INTROSPECT: {
784 const char * const * i = NULL;
785
786 for (i = bus_interface_table; *i; i += 2)
787 if (!optarg || streq(i[0], optarg)) {
788 fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
789 "<node>\n", stdout);
790 fputs(i[1], stdout);
791 fputs("</node>\n", stdout);
792
793 if (optarg)
794 break;
795 }
796
797 if (!i[0] && optarg)
798 log_error("Unknown interface %s.", optarg);
799
fa0f4d8a 800 arg_action = ACTION_DONE;
4288f619
LP		 801 break;
802 }
803
f170852a 804 case 'h':
fa0f4d8a 805 arg_action = ACTION_HELP;
f170852a
LP		 806 break;
807
1d2e23ab
LP		 808 case 'D':
809 log_set_max_level(LOG_DEBUG);
810 break;
811
099663ff
LP		 812 case 'b':
813 case 's':
814 case 'z':
815 /* Just to eat away the sysvinit kernel
816 * cmdline args without getopt() error
817 * messages that we'll parse in
818 * parse_proc_cmdline_word() or ignore. */
f170852a 819
099663ff 820 case '?':
f170852a 821 default:
099663ff
LP		 822 if (getpid() != 1) {
823 log_error("Unknown option code %c", c);
824 return -EINVAL;
825 }
826
827 break;
f170852a
LP		 828 }
829
d821e6d6
LP		 830 if (optind < argc && getpid() != 1) {
831 /* Hmm, when we aren't run as init system
832 * let's complain about excess arguments */
833
834 log_error("Excess arguments.");
835 return -EINVAL;
836 }
837
838 if (detect_container(NULL) > 0) {
839 char **a;
840
841 /* All /proc/cmdline arguments the kernel didn't
842 * understand it passed to us. We're not really
843 * interested in that usually since /proc/cmdline is
844 * more interesting and complete. With one exception:
845 * if we are run in a container /proc/cmdline is not
846 * relevant for the container, hence we rely on argv[]
847 * instead. */
848
849 for (a = argv; a < argv + argc; a++)
850 if ((r = parse_proc_cmdline_word(*a)) < 0)
851 return r;
51f0e189
LP		 852 }
853
f170852a
LP		 854 return 0;
855}
856
857static int help(void) {
858
2e33c433 859 printf("%s [OPTIONS...]\n\n"
af2d49f7 860 "Starts up and maintains the system or user services.\n\n"
e537352b 861 " -h --help Show this help\n"
e537352b 862 " --test Determine startup sequence, dump it and exit\n"
80876c20 863 " --dump-configuration-items Dump understood unit configuration items\n"
bbe63281 864 " --introspect[=INTERFACE] Extract D-Bus interface data\n"
9e58ff9c 865 " --unit=UNIT Set default unit\n"
edb9aaa8 866 " --system Run a system instance, even if PID != 1\n"
af2d49f7 867 " --user Run a user instance\n"
9e58ff9c
LP		 868 " --dump-core Dump core on crash\n"
869 " --crash-shell Run shell on crash\n"
870 " --confirm-spawn Ask for confirmation when spawning processes\n"
6e98720f 871 " --show-status[=0|1] Show status updates on the console during bootup\n"
07459bb6 872#ifdef HAVE_SYSV_COMPAT
6e98720f 873 " --sysv-console[=0|1] Connect output of SysV scripts to console\n"
07459bb6 874#endif
bbe63281 875 " --log-target=TARGET Set log target (console, syslog, kmsg, syslog-or-kmsg, null)\n"
9e58ff9c 876 " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
2218198b 877 " --log-color[=0|1] Highlight important log messages\n"
0a494f1f
LP		 878 " --log-location[=0|1] Include code location in log messages\n"
879 " --default-standard-output= Set default standard output for services\n"
880 " --default-standard-error= Set default standard error output for services\n",
5b6319dc 881 program_invocation_short_name);
f170852a
LP		 882
883 return 0;
884}
885
a16e1123
LP		 886static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) {
887 FILE *f = NULL;
888 FDSet *fds = NULL;
889 int r;
890
891 assert(m);
892 assert(_f);
893 assert(_fds);
894
a7556052
LP		 895 /* Make sure nothing is really destructed when we shut down */
896 m->n_reloading ++;
897
d8d5ab98 898 if ((r = manager_open_serialization(m, &f)) < 0) {
35b8ca3a 899 log_error("Failed to create serialization file: %s", strerror(-r));
a16e1123
LP		 900 goto fail;
901 }
902
903 if (!(fds = fdset_new())) {
904 r = -ENOMEM;
905 log_error("Failed to allocate fd set: %s", strerror(-r));
906 goto fail;
907 }
908
909 if ((r = manager_serialize(m, f, fds)) < 0) {
910 log_error("Failed to serialize state: %s", strerror(-r));
911 goto fail;
912 }
913
914 if (fseeko(f, 0, SEEK_SET) < 0) {
915 log_error("Failed to rewind serialization fd: %m");
916 goto fail;
917 }
918
919 if ((r = fd_cloexec(fileno(f), false)) < 0) {
920 log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
921 goto fail;
922 }
923
924 if ((r = fdset_cloexec(fds, false)) < 0) {
925 log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r));
926 goto fail;
927 }
928
929 *_f = f;
930 *_fds = fds;
931
932 return 0;
933
934fail:
935 fdset_free(fds);
936
937 if (f)
938 fclose(f);
939
940 return r;
941}
942
e9ddabc2
LP		 943static struct dual_timestamp* parse_initrd_timestamp(struct dual_timestamp *t) {
944 const char *e;
945 unsigned long long a, b;
946
947 assert(t);
948
949 if (!(e = getenv("RD_TIMESTAMP")))
950 return NULL;
951
952 if (sscanf(e, "%llu %llu", &a, &b) != 2)
953 return NULL;
954
955 t->realtime = (usec_t) a;
956 t->monotonic = (usec_t) b;
957
958 return t;
959}
960
6ee5bbf8
LP		 961static void test_mtab(void) {
962 char *p;
963
80758717
LP		 964 /* Check that /etc/mtab is a symlink */
965
6ee5bbf8
LP		 966 if (readlink_malloc("/etc/mtab", &p) >= 0) {
967 bool b;
968
ed86ebc4 969 b = streq(p, "/proc/self/mounts") || streq(p, "/proc/mounts");
6ee5bbf8
LP		 970 free(p);
971
972 if (b)
973 return;
974 }
975
80758717
LP		 976 log_warning("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
977 "This is not supported anymore. "
978 "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
979}
980
981static void test_usr(void) {
80758717 982
ed1c99fc 983 /* Check that /usr is not a separate fs */
80758717 984
871c44a7
LP		 985 if (dir_is_empty("/usr") <= 0)
986 return;
987
2376ce13 988 log_warning("/usr appears to be on its own filesytem and is not already mounted. This is not a supported setup. "
871c44a7
LP		 989 "Some things will probably break (sometimes even silently) in mysterious ways. "
990 "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information.");
991}
992
993static void test_cgroups(void) {
994
995 if (access("/proc/cgroups", F_OK) >= 0)
996 return;
997
998 log_warning("CONFIG_CGROUPS was not set when your kernel was compiled. "
999 "Systems without control groups are not supported. "
1000 "We will now sleep for 10s, and then continue boot-up. "
1001 "Expect breakage and please do not file bugs. "
1002 "Instead fix your kernel and enable CONFIG_CGROUPS." );
1003
1004 sleep(10);
6ee5bbf8
LP		 1005}
1006
60918275
LP		 1007int main(int argc, char *argv[]) {
1008 Manager *m = NULL;
22f4096c 1009 int r, retval = EXIT_FAILURE;
9d76d730
LP		 1010 usec_t before_startup, after_startup;
1011 char timespan[FORMAT_TIMESPAN_MAX];
a16e1123
LP		 1012 FDSet *fds = NULL;
1013 bool reexecute = false;
b9080b03 1014 const char *shutdown_verb = NULL;
e9ddabc2 1015 dual_timestamp initrd_timestamp = { 0ULL, 0ULL };
f3b6a3ed 1016 char systemd[] = "systemd";
0b3325e7
LP		 1017 bool is_reexec = false;
1018 int j;
1019 bool loaded_policy = false;
27b14a22 1020
058dc6f3 1021#ifdef HAVE_SYSV_COMPAT
2cb1a60d 1022 if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
35b8ca3a 1023 /* This is compatibility support for SysV, where
2cb1a60d
LP		 1024 * calling init as a user is identical to telinit. */
1025
1026 errno = -ENOENT;
1027 execv(SYSTEMCTL_BINARY_PATH, argv);
1028 log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m");
1029 return 1;
1030 }
058dc6f3 1031#endif
2cb1a60d 1032
0b3325e7
LP		 1033 /* Determine if this is a reexecution or normal bootup. We do
1034 * the full command line parsing much later, so let's just
1035 * have a quick peek here. */
1036
1037 for (j = 1; j < argc; j++)
1038 if (streq(argv[j], "--deserialize")) {
0b3325e7 1039 is_reexec = true;
7aaa27f2 1040 break;
0b3325e7
LP		 1041 }
1042
f3b6a3ed
LP		 1043 /* If we get started via the /sbin/init symlink then we are
1044 called 'init'. After a subsequent reexecution we are then
1045 called 'systemd'. That is confusing, hence let's call us
1046 systemd right-away. */
1047
1048 program_invocation_short_name = systemd;
1049 prctl(PR_SET_NAME, systemd);
9a0e6896
LP		 1050 saved_argv = argv;
1051 saved_argc = argc;
f3b6a3ed 1052
2cc59dbf 1053 log_show_color(isatty(STDERR_FILENO) > 0);
bbe63281 1054 log_show_location(false);
7c706717 1055 log_set_max_level(LOG_INFO);
bbe63281 1056
843d2643 1057 if (getpid() == 1) {
fa0f4d8a 1058 arg_running_as = MANAGER_SYSTEM;
90df7e56 1059 log_set_target(detect_container(NULL) > 0 ? LOG_TARGET_CONSOLE : LOG_TARGET_SYSLOG_OR_KMSG);
0ff4cdd9 1060
0b3325e7
LP		 1061 if (!is_reexec)
1062 if (selinux_setup(&loaded_policy) < 0)
1063 goto finish;
1064
1065 log_open();
c4dcdb9f 1066
0ff4cdd9
LP		 1067 if (label_init() < 0)
1068 goto finish;
7948c4df 1069
0b3325e7
LP		 1070 if (!is_reexec)
1071 if (hwclock_is_localtime() > 0) {
1072 int min;
7948c4df 1073
0b3325e7
LP		 1074 r = hwclock_apply_localtime_delta(&min);
1075 if (r < 0)
1076 log_error("Failed to apply local time delta, ignoring: %s", strerror(-r));
1077 else
1078 log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
1079 }
871e5809 1080
bbe63281 1081 } else {
af2d49f7 1082 arg_running_as = MANAGER_USER;
eeecf6e6 1083 log_set_target(LOG_TARGET_AUTO);
871e5809 1084 log_open();
bbe63281 1085 }
a5dab5ce 1086
f170852a
LP		 1087 if (set_default_unit(SPECIAL_DEFAULT_TARGET) < 0)
1088 goto finish;
60918275 1089
f170852a
LP		 1090 /* Mount /proc, /sys and friends, so that /proc/cmdline and
1091 * /proc/$PID/fd is available. */
ca326f6f 1092 if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS"))
0b3325e7 1093 if (mount_setup(loaded_policy) < 0)
8efe3c01 1094 goto finish;
4ade7963
LP		 1095
1096 /* Reset all signal handlers. */
1097 assert_se(reset_all_signal_handlers() == 0);
1098
078e4539 1099 /* If we are init, we can block sigkill. Yay. */
9a34ec5f 1100 ignore_signals(SIGNALS_IGNORE, -1);
078e4539 1101
487393e9
LP		 1102 if (parse_config_file() < 0)
1103 goto finish;
1104
fa0f4d8a 1105 if (arg_running_as == MANAGER_SYSTEM)
a5dab5ce
LP		 1106 if (parse_proc_cmdline() < 0)
1107 goto finish;
f170852a
LP		 1108
1109 log_parse_environment();
1110
1111 if (parse_argv(argc, argv) < 0)
1112 goto finish;
1113
b5c6cf87
LP		 1114 if (arg_action == ACTION_TEST && geteuid() == 0) {
1115 log_error("Don't run test mode as root.");
1116 goto finish;
1117 }
1118
fe783b03
LP		 1119 if (arg_running_as == MANAGER_SYSTEM &&
1120 arg_action == ACTION_RUN &&
1121 running_in_chroot() > 0) {
1122 log_error("Cannot be run in a chroot() environment.");
1123 goto finish;
1124 }
1125
fa0f4d8a 1126 if (arg_action == ACTION_HELP) {
f170852a
LP		 1127 retval = help();
1128 goto finish;
fa0f4d8a 1129 } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
e537352b 1130 unit_dump_config_items(stdout);
22f4096c 1131 retval = EXIT_SUCCESS;
e537352b 1132 goto finish;
fa0f4d8a 1133 } else if (arg_action == ACTION_DONE) {
22f4096c 1134 retval = EXIT_SUCCESS;
4288f619 1135 goto finish;
f170852a
LP		 1136 }
1137
fa0f4d8a 1138 assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST);
f170852a 1139
871e5809
LP		 1140 /* Close logging fds, in order not to confuse fdset below */
1141 log_close();
1142
a16e1123
LP		 1143 /* Remember open file descriptors for later deserialization */
1144 if (serialization) {
1145 if ((r = fdset_new_fill(&fds)) < 0) {
1146 log_error("Failed to allocate fd set: %s", strerror(-r));
1147 goto finish;
1148 }
1149
1150 assert_se(fdset_remove(fds, fileno(serialization)) >= 0);
1151 } else
1152 close_all_fds(NULL, 0);
1153
09082a94 1154 /* Set up PATH unless it is already set */
e537352b
LP		 1155 setenv("PATH",
1156 "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
fa0f4d8a 1157 arg_running_as == MANAGER_SYSTEM);
09082a94 1158
39439087 1159 if (arg_running_as == MANAGER_SYSTEM) {
e9ddabc2
LP		 1160 /* Parse the data passed to us by the initrd and unset it */
1161 parse_initrd_timestamp(&initrd_timestamp);
1162 filter_environ("RD_");
1163
1164 /* Unset some environment variables passed in from the
1165 * kernel that don't really make sense for us. */
39439087
LP		 1166 unsetenv("HOME");
1167 unsetenv("TERM");
b770165a
LP		 1168
1169 /* All other variables are left as is, so that clients
1170 * can still read them via /proc/1/environ */
39439087 1171 }
1104f3c1 1172
f170852a
LP		 1173 /* Move out of the way, so that we won't block unmounts */
1174 assert_se(chdir("/") == 0);
1175
fa0f4d8a 1176 if (arg_running_as == MANAGER_SYSTEM) {
80876c20
LP		 1177 /* Become a session leader if we aren't one yet. */
1178 setsid();
4ade7963 1179
80876c20
LP		 1180 /* Disable the umask logic */
1181 umask(0);
1182 }
1183
843d2643
LP		 1184 /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */
1185 dbus_connection_set_change_sigpipe(FALSE);
1186
2146621b
LP		 1187 /* Reset the console, but only if this is really init and we
1188 * are freshly booted */
fa0f4d8a 1189 if (arg_running_as == MANAGER_SYSTEM && arg_action == ACTION_RUN) {
0b3325e7 1190 console_setup(getpid() == 1 && !is_reexec);
843d2643
LP		 1191 make_null_stdio();
1192 }
4ade7963 1193
18149b9f 1194 /* Open the logging devices, if possible and necessary */
843d2643 1195 log_open();
4ade7963 1196
5373d602
LP		 1197 /* Make sure we leave a core dump without panicing the
1198 * kernel. */
4fc935ca
LP		 1199 if (getpid() == 1)
1200 install_crash_handler();
97c4f35c 1201
302e27c8 1202 log_full(arg_running_as == MANAGER_SYSTEM ? LOG_INFO : LOG_DEBUG,
7d568925 1203 PACKAGE_STRING " running in %s mode. (" SYSTEMD_FEATURES "; " DISTRIBUTION ")", manager_running_as_to_string(arg_running_as));
a5dab5ce 1204
0b3325e7 1205 if (arg_running_as == MANAGER_SYSTEM && !is_reexec) {
72bca11b
LP		 1206 locale_setup();
1207
6faa1114 1208 if (arg_show_status || plymouth_running())
888c6216
LP		 1209 status_welcome();
1210
888c6216
LP		 1211 kmod_setup();
1212 hostname_setup();
d7ccca2e 1213 machine_id_setup();
888c6216 1214 loopback_setup();
490aed58 1215
6ee5bbf8 1216 test_mtab();
80758717 1217 test_usr();
871c44a7 1218 test_cgroups();
af5bc85d 1219 }
302e8c4c 1220
9e58ff9c 1221 if ((r = manager_new(arg_running_as, &m)) < 0) {
8e274523 1222 log_error("Failed to allocate manager object: %s", strerror(-r));
60918275
LP		 1223 goto finish;
1224 }
1225
9e58ff9c
LP		 1226 m->confirm_spawn = arg_confirm_spawn;
1227 m->show_status = arg_show_status;
07459bb6 1228#ifdef HAVE_SYSV_COMPAT
6e98720f 1229 m->sysv_console = arg_sysv_console;
07459bb6 1230#endif
d3689161 1231 m->mount_auto = arg_mount_auto;
173a8d04 1232 m->swap_auto = arg_swap_auto;
0a494f1f
LP		 1233 m->default_std_output = arg_default_std_output;
1234 m->default_std_error = arg_default_std_error;
9e58ff9c 1235
e9ddabc2
LP		 1236 if (dual_timestamp_is_set(&initrd_timestamp))
1237 m->initrd_timestamp = initrd_timestamp;
1238
06d4c99a
LP		 1239 if (arg_default_controllers)
1240 manager_set_default_controllers(m, arg_default_controllers);
1241
9d76d730
LP		 1242 before_startup = now(CLOCK_MONOTONIC);
1243
a16e1123 1244 if ((r = manager_startup(m, serialization, fds)) < 0)
6e2ef85b 1245 log_error("Failed to fully start up daemon: %s", strerror(-r));
a16e1123
LP		 1246
1247 if (fds) {
1248 /* This will close all file descriptors that were opened, but
1249 * not claimed by any unit. */
1250
1251 fdset_free(fds);
1252 fds = NULL;
f50e0a01
LP		 1253 }
1254
a16e1123
LP		 1255 if (serialization) {
1256 fclose(serialization);
1257 serialization = NULL;
1258 } else {
398ef8ba 1259 DBusError error;
1c27d3f3 1260 Unit *target = NULL;
398ef8ba
LP		 1261
1262 dbus_error_init(&error);
1263
fa0f4d8a 1264 log_debug("Activating default unit: %s", arg_default_unit);
a16e1123 1265
398ef8ba
LP		 1266 if ((r = manager_load_unit(m, arg_default_unit, NULL, &error, &target)) < 0) {
1267 log_error("Failed to load default target: %s", bus_error(&error, r));
1268 dbus_error_free(&error);
00dc5d76 1269 } else if (target->meta.load_state == UNIT_ERROR)
1c27d3f3 1270 log_error("Failed to load default target: %s", strerror(-target->meta.load_error));
6daf4f90
LP		 1271 else if (target->meta.load_state == UNIT_MASKED)
1272 log_error("Default target masked.");
27b14a22 1273
1c27d3f3 1274 if (!target || target->meta.load_state != UNIT_LOADED) {
a16e1123 1275 log_info("Trying to load rescue target...");
1c27d3f3 1276
398ef8ba
LP		 1277 if ((r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target)) < 0) {
1278 log_error("Failed to load rescue target: %s", bus_error(&error, r));
1279 dbus_error_free(&error);
a16e1123 1280 goto finish;
00dc5d76 1281 } else if (target->meta.load_state == UNIT_ERROR) {
1c27d3f3
LP		 1282 log_error("Failed to load rescue target: %s", strerror(-target->meta.load_error));
1283 goto finish;
6daf4f90
LP		 1284 } else if (target->meta.load_state == UNIT_MASKED) {
1285 log_error("Rescue target masked.");
00dc5d76 1286 goto finish;
a16e1123
LP		 1287 }
1288 }
37d88da7 1289
00dc5d76
LP		 1290 assert(target->meta.load_state == UNIT_LOADED);
1291
fa0f4d8a 1292 if (arg_action == ACTION_TEST) {
40d50879 1293 printf("-> By units:\n");
a16e1123
LP		 1294 manager_dump_units(m, stdout, "\t");
1295 }
1296
0ff4cdd9 1297 if ((r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, NULL)) < 0) {
398ef8ba
LP		 1298 log_error("Failed to start default target: %s", bus_error(&error, r));
1299 dbus_error_free(&error);
37d88da7
LP		 1300 goto finish;
1301 }
60918275 1302
07672f49
LP		 1303 after_startup = now(CLOCK_MONOTONIC);
1304 log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG,
1305 "Loaded units and determined initial transaction in %s.",
1306 format_timespan(timespan, sizeof(timespan), after_startup - before_startup));
1307
fa0f4d8a 1308 if (arg_action == ACTION_TEST) {
40d50879 1309 printf("-> By jobs:\n");
a16e1123 1310 manager_dump_jobs(m, stdout, "\t");
22f4096c 1311 retval = EXIT_SUCCESS;
a16e1123
LP		 1312 goto finish;
1313 }
e965d56d 1314 }
d46de8a1 1315
a16e1123
LP		 1316 for (;;) {
1317 if ((r = manager_loop(m)) < 0) {
1318 log_error("Failed to run mainloop: %s", strerror(-r));
1319 goto finish;
1320 }
11dd41ce 1321
a16e1123 1322 switch (m->exit_code) {
e965d56d 1323
a16e1123 1324 case MANAGER_EXIT:
22f4096c 1325 retval = EXIT_SUCCESS;
a16e1123
LP		 1326 log_debug("Exit.");
1327 goto finish;
e965d56d 1328
a16e1123 1329 case MANAGER_RELOAD:
e015090f 1330 log_info("Reloading.");
a16e1123
LP		 1331 if ((r = manager_reload(m)) < 0)
1332 log_error("Failed to reload: %s", strerror(-r));
1333 break;
cea8e32e 1334
a16e1123 1335 case MANAGER_REEXECUTE:
a16e1123
LP		 1336 if (prepare_reexecute(m, &serialization, &fds) < 0)
1337 goto finish;
60918275 1338
a16e1123 1339 reexecute = true;
e015090f 1340 log_notice("Reexecuting.");
a16e1123
LP		 1341 goto finish;
1342
b9080b03
FF		 1343 case MANAGER_REBOOT:
1344 case MANAGER_POWEROFF:
1345 case MANAGER_HALT:
1346 case MANAGER_KEXEC: {
1347 static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
1348 [MANAGER_REBOOT] = "reboot",
1349 [MANAGER_POWEROFF] = "poweroff",
1350 [MANAGER_HALT] = "halt",
1351 [MANAGER_KEXEC] = "kexec"
1352 };
1353
1354 assert_se(shutdown_verb = table[m->exit_code]);
1355
1356 log_notice("Shutting down.");
1357 goto finish;
1358 }
1359
a16e1123
LP		 1360 default:
1361 assert_not_reached("Unknown exit code.");
1362 }
1363 }
f170852a 1364
60918275
LP		 1365finish:
1366 if (m)
1367 manager_free(m);
1368
fa0f4d8a 1369 free(arg_default_unit);
06d4c99a 1370 strv_free(arg_default_controllers);
b9cd2ec1 1371
ea430986
LP		 1372 dbus_shutdown();
1373
b2bb3dbe
LP		 1374 label_finish();
1375
a16e1123 1376 if (reexecute) {
6e98720f 1377 const char *args[15];
a16e1123
LP		 1378 unsigned i = 0;
1379 char sfd[16];
1380
1381 assert(serialization);
1382 assert(fds);
1383
1384 args[i++] = SYSTEMD_BINARY_PATH;
1385
1386 args[i++] = "--log-level";
1387 args[i++] = log_level_to_string(log_get_max_level());
1388
1389 args[i++] = "--log-target";
1390 args[i++] = log_target_to_string(log_get_target());
1391
edb9aaa8
LP		 1392 if (arg_running_as == MANAGER_SYSTEM)
1393 args[i++] = "--system";
1394 else
af2d49f7 1395 args[i++] = "--user";
edb9aaa8
LP		 1396
1397 if (arg_dump_core)
1398 args[i++] = "--dump-core";
1399
1400 if (arg_crash_shell)
1401 args[i++] = "--crash-shell";
1402
1403 if (arg_confirm_spawn)
1404 args[i++] = "--confirm-spawn";
1405
1406 if (arg_show_status)
6e98720f
LP		 1407 args[i++] = "--show-status=1";
1408 else
1409 args[i++] = "--show-status=0";
1410
07459bb6 1411#ifdef HAVE_SYSV_COMPAT
6e98720f
LP		 1412 if (arg_sysv_console)
1413 args[i++] = "--sysv-console=1";
1414 else
1415 args[i++] = "--sysv-console=0";
07459bb6 1416#endif
a16e1123
LP		 1417
1418 snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
1419 char_array_0(sfd);
1420
1421 args[i++] = "--deserialize";
1422 args[i++] = sfd;
1423
a16e1123
LP		 1424 args[i++] = NULL;
1425
1426 assert(i <= ELEMENTSOF(args));
1427
1428 execv(args[0], (char* const*) args);
1429
1430 log_error("Failed to reexecute: %m");
1431 }
1432
1433 if (serialization)
1434 fclose(serialization);
1435
1436 if (fds)
1437 fdset_free(fds);
1438
b9080b03
FF		 1439 if (shutdown_verb) {
1440 const char * command_line[] = {
1441 SYSTEMD_SHUTDOWN_BINARY_PATH,
1442 shutdown_verb,
1443 NULL
1444 };
1445
1446 execv(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line);
1447 log_error("Failed to execute shutdown binary, freezing: %m");
1448 }
1449
c3b3c274
LP		 1450 if (getpid() == 1)
1451 freeze();
1452
60918275
LP		 1453 return retval;
1454}
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