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CommitLineData
60918275
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1/*-*- Mode: C; c-basic-offset: 8 -*-*/
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>
60918275
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34
35#include "manager.h"
16354eff 36#include "log.h"
4ade7963 37#include "mount-setup.h"
302e8c4c
LP
38#include "hostname-setup.h"
39#include "load-fragment.h"
a16e1123 40#include "fdset.h"
60918275 41
f170852a
LP
42static enum {
43 ACTION_RUN,
e965d56d 44 ACTION_HELP,
e537352b
LP
45 ACTION_TEST,
46 ACTION_DUMP_CONFIGURATION_ITEMS
f170852a
LP
47} action = ACTION_RUN;
48
49static char *default_unit = NULL;
a5dab5ce 50static ManagerRunningAs running_as = _MANAGER_RUNNING_AS_INVALID;
4fc935ca 51
97c4f35c 52static bool dump_core = true;
601f6a1e
LP
53static bool crash_shell = false;
54static int crash_chvt = -1;
80876c20 55static bool confirm_spawn = false;
a16e1123 56static FILE* serialization = NULL;
80876c20 57
97c4f35c
LP
58_noreturn static void freeze(void) {
59 for (;;)
60 pause();
61}
62
6f5e3f35
LP
63static void nop_handler(int sig) {
64}
65
97c4f35c
LP
66_noreturn static void crash(int sig) {
67
68 if (!dump_core)
69 log_error("Caught <%s>, not dumping core.", strsignal(sig));
70 else {
6f5e3f35 71 struct sigaction sa;
97c4f35c
LP
72 pid_t pid;
73
6f5e3f35
LP
74 /* We want to wait for the core process, hence let's enable SIGCHLD */
75 zero(sa);
76 sa.sa_handler = nop_handler;
77 sa.sa_flags = SA_NOCLDSTOP|SA_RESTART;
78 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
79
97c4f35c 80 if ((pid = fork()) < 0)
4fc935ca 81 log_error("Caught <%s>, cannot fork for core dump: %s", strsignal(sig), strerror(errno));
97c4f35c
LP
82
83 else if (pid == 0) {
97c4f35c
LP
84 struct rlimit rl;
85
86 /* Enable default signal handler for core dump */
87 zero(sa);
88 sa.sa_handler = SIG_DFL;
89 assert_se(sigaction(sig, &sa, NULL) == 0);
90
91 /* Don't limit the core dump size */
92 zero(rl);
93 rl.rlim_cur = RLIM_INFINITY;
94 rl.rlim_max = RLIM_INFINITY;
95 setrlimit(RLIMIT_CORE, &rl);
96
97 /* Just to be sure... */
98 assert_se(chdir("/") == 0);
99
100 /* Raise the signal again */
101 raise(sig);
102
103 assert_not_reached("We shouldn't be here...");
104 _exit(1);
4fc935ca
LP
105
106 } else {
107 int status, r;
108
109 /* Order things nicely. */
110 if ((r = waitpid(pid, &status, 0)) < 0)
111 log_error("Caught <%s>, waitpid() failed: %s", strsignal(sig), strerror(errno));
112 else if (!WCOREDUMP(status))
113 log_error("Caught <%s>, core dump failed.", strsignal(sig));
114 else
115 log_error("Caught <%s>, dumped core as pid %llu.", strsignal(sig), (unsigned long long) pid);
97c4f35c
LP
116 }
117 }
118
601f6a1e
LP
119 if (crash_chvt)
120 chvt(crash_chvt);
121
4fc935ca 122 if (crash_shell) {
6f5e3f35
LP
123 struct sigaction sa;
124 pid_t pid;
8c43883a 125
4fc935ca
LP
126 log_info("Executing crash shell in 10s...");
127 sleep(10);
128
6f5e3f35
LP
129 /* Let the kernel reap children for us */
130 zero(sa);
131 sa.sa_handler = SIG_IGN;
132 sa.sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART;
133 assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
8c43883a 134
6f5e3f35
LP
135 if ((pid = fork()) < 0)
136 log_error("Failed to fork off crash shell: %s", strerror(errno));
137 else if (pid == 0) {
138 execl("/bin/sh", "/bin/sh", NULL);
139
140 log_error("execl() failed: %s", strerror(errno));
141 _exit(1);
142 }
c99b188e 143
6f5e3f35 144 log_info("Successfully spawned crash shall as pid %llu.", (unsigned long long) pid);
4fc935ca
LP
145 }
146
147 log_info("Freezing execution.");
97c4f35c
LP
148 freeze();
149}
150
151static void install_crash_handler(void) {
152 struct sigaction sa;
153
154 zero(sa);
155
156 sa.sa_handler = crash;
157 sa.sa_flags = SA_NODEFER;
158
159 assert_se(sigaction(SIGSEGV, &sa, NULL) == 0);
5373d602
LP
160 assert_se(sigaction(SIGILL, &sa, NULL) == 0);
161 assert_se(sigaction(SIGFPE, &sa, NULL) == 0);
162 assert_se(sigaction(SIGBUS, &sa, NULL) == 0);
163 assert_se(sigaction(SIGQUIT, &sa, NULL) == 0);
97c4f35c
LP
164 assert_se(sigaction(SIGABRT, &sa, NULL) == 0);
165}
f170852a 166
2146621b 167static int console_setup(bool do_reset) {
80876c20
LP
168 int tty_fd = -1, null_fd = -1, r = 0;
169
170 /* If we are init, we connect stdout/stderr to /dev/console
171 * and stdin to /dev/null and make sure we don't have a
172 * controlling tty. */
173
174 release_terminal();
175
176 if ((tty_fd = open_terminal("/dev/console", O_WRONLY)) < 0) {
177 log_error("Failed to open /dev/console: %s", strerror(-tty_fd));
178 r = -tty_fd;
179 goto finish;
180 }
181
182 if ((null_fd = open("/dev/null", O_RDONLY)) < 0) {
183 log_error("Failed to open /dev/null: %m");
184 r = -errno;
185 goto finish;
186 }
187
188 assert(tty_fd >= 3);
189 assert(null_fd >= 3);
190
2146621b
LP
191 if (do_reset)
192 if (reset_terminal(tty_fd) < 0)
193 log_error("Failed to reset /dev/console: %m");
80876c20
LP
194
195 if (dup2(tty_fd, STDOUT_FILENO) < 0 ||
196 dup2(tty_fd, STDERR_FILENO) < 0 ||
197 dup2(null_fd, STDIN_FILENO) < 0) {
198 log_error("Failed to dup2() device: %m");
199 r = -errno;
200 goto finish;
201 }
202
203 r = 0;
204
205finish:
206 if (tty_fd >= 0)
a16e1123 207 close_nointr_nofail(tty_fd);
80876c20
LP
208
209 if (null_fd >= 0)
a16e1123 210 close_nointr_nofail(null_fd);
80876c20
LP
211
212 return r;
213}
214
f170852a
LP
215static int set_default_unit(const char *u) {
216 char *c;
217
218 assert(u);
219
220 if (!(c = strdup(u)))
221 return -ENOMEM;
222
223 free(default_unit);
224 default_unit = c;
225 return 0;
226}
227
228static int parse_proc_cmdline_word(const char *word) {
229
230 static const char * const rlmap[] = {
231 "single", SPECIAL_RUNLEVEL1_TARGET,
232 "-s", SPECIAL_RUNLEVEL1_TARGET,
233 "s", SPECIAL_RUNLEVEL1_TARGET,
234 "S", SPECIAL_RUNLEVEL1_TARGET,
235 "1", SPECIAL_RUNLEVEL1_TARGET,
236 "2", SPECIAL_RUNLEVEL2_TARGET,
237 "3", SPECIAL_RUNLEVEL3_TARGET,
238 "4", SPECIAL_RUNLEVEL4_TARGET,
239 "5", SPECIAL_RUNLEVEL5_TARGET
240 };
241
242 if (startswith(word, "systemd.default="))
82771ba1 243 return set_default_unit(word + 16);
f170852a
LP
244
245 else if (startswith(word, "systemd.log_target=")) {
246
247 if (log_set_target_from_string(word + 19) < 0)
248 log_warning("Failed to parse log target %s. Ignoring.", word + 19);
249
250 } else if (startswith(word, "systemd.log_level=")) {
251
252 if (log_set_max_level_from_string(word + 18) < 0)
253 log_warning("Failed to parse log level %s. Ignoring.", word + 18);
254
4fc935ca
LP
255 } else if (startswith(word, "systemd.dump_core=")) {
256 int r;
257
258 if ((r = parse_boolean(word + 18)) < 0)
601f6a1e 259 log_warning("Failed to parse dump core switch %s, Ignoring.", word + 18);
4fc935ca
LP
260 else
261 dump_core = r;
262
263 } else if (startswith(word, "systemd.crash_shell=")) {
264 int r;
265
266 if ((r = parse_boolean(word + 20)) < 0)
601f6a1e 267 log_warning("Failed to parse crash shell switch %s, Ignoring.", word + 20);
4fc935ca
LP
268 else
269 crash_shell = r;
270
5e7ee61c
LP
271
272 } else if (startswith(word, "systemd.confirm_spawn=")) {
273 int r;
274
275 if ((r = parse_boolean(word + 22)) < 0)
276 log_warning("Failed to parse confirm spawn switch %s, Ignoring.", word + 22);
277 else
278 confirm_spawn = r;
279
601f6a1e
LP
280 } else if (startswith(word, "systemd.crash_chvt=")) {
281 int k;
282
283 if (safe_atoi(word + 19, &k) < 0)
284 log_warning("Failed to parse crash chvt switch %s, Ignoring.", word + 19);
285 else
286 crash_chvt = k;
287
4fc935ca
LP
288 } else if (startswith(word, "systemd.")) {
289
290 log_warning("Unknown kernel switch %s. Ignoring.", word);
291
292 log_info("Supported kernel switches:");
293 log_info("systemd.default=UNIT Default unit to start");
294 log_info("systemd.log_target=console|kmsg|syslog Log target");
295 log_info("systemd.log_level=LEVEL Log level");
296 log_info("systemd.dump_core=0|1 Dump core on crash");
297 log_info("systemd.crash_shell=0|1 On crash run shell");
601f6a1e 298 log_info("systemd.crash_chvt=N Change to VT #N on crash");
5e7ee61c 299 log_info("systemd.confirm_spawn=0|1 Confirm every process spawn");
4fc935ca 300
f170852a
LP
301 } else {
302 unsigned i;
303
304 /* SysV compatibility */
f170852a
LP
305 for (i = 0; i < ELEMENTSOF(rlmap); i += 2)
306 if (streq(word, rlmap[i]))
307 return set_default_unit(rlmap[i+1]);
308 }
309
310 return 0;
311}
312
313static int parse_proc_cmdline(void) {
314 char *line;
315 int r;
316 char *w;
317 size_t l;
318 char *state;
319
320 if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) {
321 log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(errno));
322 return 0;
323 }
324
325 FOREACH_WORD_QUOTED(w, l, line, state) {
326 char *word;
327
328 if (!(word = strndup(w, l))) {
329 r = -ENOMEM;
330 goto finish;
331 }
332
333 r = parse_proc_cmdline_word(word);
334 free(word);
335
336 if (r < 0)
337 goto finish;
338 }
339
340 r = 0;
341
342finish:
343 free(line);
344 return r;
345}
346
347static int parse_argv(int argc, char *argv[]) {
348
349 enum {
350 ARG_LOG_LEVEL = 0x100,
351 ARG_LOG_TARGET,
a5dab5ce 352 ARG_DEFAULT,
e965d56d 353 ARG_RUNNING_AS,
e537352b 354 ARG_TEST,
80876c20 355 ARG_DUMP_CONFIGURATION_ITEMS,
a16e1123
LP
356 ARG_CONFIRM_SPAWN,
357 ARG_DESERIALIZE
f170852a
LP
358 };
359
360 static const struct option options[] = {
a16e1123
LP
361 { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
362 { "log-target", required_argument, NULL, ARG_LOG_TARGET },
363 { "default", required_argument, NULL, ARG_DEFAULT },
364 { "running-as", required_argument, NULL, ARG_RUNNING_AS },
365 { "test", no_argument, NULL, ARG_TEST },
366 { "help", no_argument, NULL, 'h' },
367 { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
368 { "confirm-spawn", no_argument, NULL, ARG_CONFIRM_SPAWN },
369 { "deserialize", required_argument, NULL, ARG_DESERIALIZE },
370 { NULL, 0, NULL, 0 }
f170852a
LP
371 };
372
373 int c, r;
374
375 assert(argc >= 1);
376 assert(argv);
377
378 while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
379
380 switch (c) {
381
382 case ARG_LOG_LEVEL:
383 if ((r = log_set_max_level_from_string(optarg)) < 0) {
384 log_error("Failed to parse log level %s.", optarg);
385 return r;
386 }
387
388 break;
389
390 case ARG_LOG_TARGET:
391
392 if ((r = log_set_target_from_string(optarg)) < 0) {
393 log_error("Failed to parse log target %s.", optarg);
394 return r;
395 }
396
397 break;
398
399 case ARG_DEFAULT:
400
401 if ((r = set_default_unit(optarg)) < 0) {
402 log_error("Failed to set default unit %s: %s", optarg, strerror(-r));
403 return r;
404 }
405
406 break;
407
a5dab5ce
LP
408 case ARG_RUNNING_AS: {
409 ManagerRunningAs as;
410
411 if ((as = manager_running_as_from_string(optarg)) < 0) {
412 log_error("Failed to parse running as value %s", optarg);
413 return -EINVAL;
414 }
415
416 running_as = as;
417 break;
418 }
419
e965d56d
LP
420 case ARG_TEST:
421 action = ACTION_TEST;
422 break;
423
e537352b
LP
424 case ARG_DUMP_CONFIGURATION_ITEMS:
425 action = ACTION_DUMP_CONFIGURATION_ITEMS;
426 break;
427
80876c20
LP
428 case ARG_CONFIRM_SPAWN:
429 confirm_spawn = true;
430 break;
431
a16e1123
LP
432 case ARG_DESERIALIZE: {
433 int fd;
434 FILE *f;
435
436 if ((r = safe_atoi(optarg, &fd)) < 0 || fd < 0) {
437 log_error("Failed to parse deserialize option %s.", optarg);
438 return r;
439 }
440
441 if (!(f = fdopen(fd, "r"))) {
442 log_error("Failed to open serialization fd: %m");
443 return r;
444 }
445
446 if (serialization)
447 fclose(serialization);
448
449 serialization = f;
450
451 break;
452 }
453
f170852a
LP
454 case 'h':
455 action = ACTION_HELP;
456 break;
457
458 case '?':
459 return -EINVAL;
460
461 default:
462 log_error("Unknown option code %c", c);
463 return -EINVAL;
464 }
465
f170852a
LP
466 return 0;
467}
468
469static int help(void) {
470
471 printf("%s [options]\n\n"
e537352b
LP
472 " -h --help Show this help\n"
473 " --default=UNIT Set default unit\n"
474 " --log-level=LEVEL Set log level\n"
475 " --log-target=TARGET Set log target (console, syslog, kmsg)\n"
476 " --running-as=AS Set running as (init, system, session)\n"
477 " --test Determine startup sequence, dump it and exit\n"
80876c20
LP
478 " --dump-configuration-items Dump understood unit configuration items\n"
479 " --confirm-spawn Ask for confirmation when spawning processes\n",
f170852a
LP
480 __progname);
481
482 return 0;
483}
484
a16e1123
LP
485static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) {
486 FILE *f = NULL;
487 FDSet *fds = NULL;
488 int r;
489
490 assert(m);
491 assert(_f);
492 assert(_fds);
493
494 if ((r = manager_open_serialization(&f)) < 0) {
495 log_error("Failed to create serialization faile: %s", strerror(-r));
496 goto fail;
497 }
498
499 if (!(fds = fdset_new())) {
500 r = -ENOMEM;
501 log_error("Failed to allocate fd set: %s", strerror(-r));
502 goto fail;
503 }
504
505 if ((r = manager_serialize(m, f, fds)) < 0) {
506 log_error("Failed to serialize state: %s", strerror(-r));
507 goto fail;
508 }
509
510 if (fseeko(f, 0, SEEK_SET) < 0) {
511 log_error("Failed to rewind serialization fd: %m");
512 goto fail;
513 }
514
515 if ((r = fd_cloexec(fileno(f), false)) < 0) {
516 log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
517 goto fail;
518 }
519
520 if ((r = fdset_cloexec(fds, false)) < 0) {
521 log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r));
522 goto fail;
523 }
524
525 *_f = f;
526 *_fds = fds;
527
528 return 0;
529
530fail:
531 fdset_free(fds);
532
533 if (f)
534 fclose(f);
535
536 return r;
537}
538
60918275
LP
539int main(int argc, char *argv[]) {
540 Manager *m = NULL;
87f0e418 541 Unit *target = NULL;
60918275
LP
542 Job *job = NULL;
543 int r, retval = 1;
a16e1123
LP
544 FDSet *fds = NULL;
545 bool reexecute = false;
27b14a22 546
a5dab5ce
LP
547 if (getpid() == 1)
548 running_as = MANAGER_INIT;
549 else if (getuid() == 0)
550 running_as = MANAGER_SYSTEM;
551 else
552 running_as = MANAGER_SESSION;
553
f170852a
LP
554 if (set_default_unit(SPECIAL_DEFAULT_TARGET) < 0)
555 goto finish;
60918275 556
f170852a
LP
557 /* Mount /proc, /sys and friends, so that /proc/cmdline and
558 * /proc/$PID/fd is available. */
d89e521e
LP
559 if (mount_setup() < 0)
560 goto finish;
4ade7963
LP
561
562 /* Reset all signal handlers. */
563 assert_se(reset_all_signal_handlers() == 0);
564
078e4539 565 /* If we are init, we can block sigkill. Yay. */
a337c6fc
LP
566 ignore_signal(SIGKILL);
567 ignore_signal(SIGPIPE);
078e4539 568
a5dab5ce
LP
569 if (running_as != MANAGER_SESSION)
570 if (parse_proc_cmdline() < 0)
571 goto finish;
f170852a
LP
572
573 log_parse_environment();
574
575 if (parse_argv(argc, argv) < 0)
576 goto finish;
577
578 if (action == ACTION_HELP) {
579 retval = help();
580 goto finish;
e537352b
LP
581 } else if (action == ACTION_DUMP_CONFIGURATION_ITEMS) {
582 unit_dump_config_items(stdout);
583 retval = 0;
584 goto finish;
f170852a
LP
585 }
586
e965d56d 587 assert_se(action == ACTION_RUN || action == ACTION_TEST);
f170852a 588
a16e1123
LP
589 /* Remember open file descriptors for later deserialization */
590 if (serialization) {
591 if ((r = fdset_new_fill(&fds)) < 0) {
592 log_error("Failed to allocate fd set: %s", strerror(-r));
593 goto finish;
594 }
595
596 assert_se(fdset_remove(fds, fileno(serialization)) >= 0);
597 } else
598 close_all_fds(NULL, 0);
599
09082a94 600 /* Set up PATH unless it is already set */
e537352b
LP
601 setenv("PATH",
602 "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
603 running_as == MANAGER_INIT);
09082a94 604
f170852a
LP
605 /* Move out of the way, so that we won't block unmounts */
606 assert_se(chdir("/") == 0);
607
80876c20
LP
608 if (running_as != MANAGER_SESSION) {
609 /* Become a session leader if we aren't one yet. */
610 setsid();
4ade7963 611
80876c20
LP
612 /* Disable the umask logic */
613 umask(0);
614 }
615
2146621b
LP
616 /* Reset the console, but only if this is really init and we
617 * are freshly booted */
80876c20 618 if (running_as == MANAGER_INIT)
2146621b 619 console_setup(getpid() == 1 && !serialization);
4ade7963
LP
620
621 /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */
622 dbus_connection_set_change_sigpipe(FALSE);
623
18149b9f 624 /* Open the logging devices, if possible and necessary */
4ade7963
LP
625 log_open_syslog();
626 log_open_kmsg();
627
5373d602
LP
628 /* Make sure we leave a core dump without panicing the
629 * kernel. */
4fc935ca
LP
630 if (getpid() == 1)
631 install_crash_handler();
97c4f35c 632
a5dab5ce
LP
633 log_debug("systemd running in %s mode.", manager_running_as_to_string(running_as));
634
302e8c4c 635 if (running_as == MANAGER_INIT)
e537352b 636 hostname_setup();
302e8c4c 637
80876c20 638 if ((r = manager_new(running_as, confirm_spawn, &m)) < 0) {
8e274523 639 log_error("Failed to allocate manager object: %s", strerror(-r));
60918275
LP
640 goto finish;
641 }
642
a16e1123
LP
643 if ((r = manager_startup(m, serialization, fds)) < 0)
644 log_error("Failed to fully startup daemon: %s", strerror(-r));
645
646 if (fds) {
647 /* This will close all file descriptors that were opened, but
648 * not claimed by any unit. */
649
650 fdset_free(fds);
651 fds = NULL;
f50e0a01
LP
652 }
653
a16e1123
LP
654 if (serialization) {
655 fclose(serialization);
656 serialization = NULL;
657 } else {
658 log_debug("Activating default unit: %s", default_unit);
659
660 if ((r = manager_load_unit(m, default_unit, NULL, &target)) < 0) {
661 log_error("Failed to load default target: %s", strerror(-r));
27b14a22 662
a16e1123
LP
663 log_info("Trying to load rescue target...");
664 if ((r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &target)) < 0) {
665 log_error("Failed to load rescue target: %s", strerror(-r));
666 goto finish;
667 }
668 }
37d88da7 669
a16e1123 670 if (action == ACTION_TEST) {
40d50879 671 printf("-> By units:\n");
a16e1123
LP
672 manager_dump_units(m, stdout, "\t");
673 }
674
675 if ((r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &job)) < 0) {
676 log_error("Failed to start default target: %s", strerror(-r));
37d88da7
LP
677 goto finish;
678 }
60918275 679
a16e1123 680 if (action == ACTION_TEST) {
40d50879 681 printf("-> By jobs:\n");
a16e1123
LP
682 manager_dump_jobs(m, stdout, "\t");
683 retval = 0;
684 goto finish;
685 }
e965d56d 686 }
d46de8a1 687
a16e1123
LP
688 for (;;) {
689 if ((r = manager_loop(m)) < 0) {
690 log_error("Failed to run mainloop: %s", strerror(-r));
691 goto finish;
692 }
11dd41ce 693
a16e1123 694 switch (m->exit_code) {
e965d56d 695
a16e1123
LP
696 case MANAGER_EXIT:
697 retval = 0;
698 log_debug("Exit.");
699 goto finish;
e965d56d 700
a16e1123
LP
701 case MANAGER_RELOAD:
702 if ((r = manager_reload(m)) < 0)
703 log_error("Failed to reload: %s", strerror(-r));
704 break;
cea8e32e 705
a16e1123 706 case MANAGER_REEXECUTE:
a16e1123
LP
707 if (prepare_reexecute(m, &serialization, &fds) < 0)
708 goto finish;
60918275 709
a16e1123
LP
710 reexecute = true;
711 log_debug("Reexecuting.");
712 goto finish;
713
714 default:
715 assert_not_reached("Unknown exit code.");
716 }
717 }
f170852a 718
60918275
LP
719finish:
720 if (m)
721 manager_free(m);
722
f170852a 723 free(default_unit);
b9cd2ec1 724
ea430986
LP
725 dbus_shutdown();
726
a16e1123
LP
727 if (reexecute) {
728 const char *args[11];
729 unsigned i = 0;
730 char sfd[16];
731
732 assert(serialization);
733 assert(fds);
734
735 args[i++] = SYSTEMD_BINARY_PATH;
736
737 args[i++] = "--log-level";
738 args[i++] = log_level_to_string(log_get_max_level());
739
740 args[i++] = "--log-target";
741 args[i++] = log_target_to_string(log_get_target());
742
743 args[i++] = "--running-as";
744 args[i++] = manager_running_as_to_string(running_as);
745
746 snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
747 char_array_0(sfd);
748
749 args[i++] = "--deserialize";
750 args[i++] = sfd;
751
752 if (confirm_spawn)
753 args[i++] = "--confirm-spawn";
754
755 args[i++] = NULL;
756
757 assert(i <= ELEMENTSOF(args));
758
759 execv(args[0], (char* const*) args);
760
761 log_error("Failed to reexecute: %m");
762 }
763
764 if (serialization)
765 fclose(serialization);
766
767 if (fds)
768 fdset_free(fds);
769
c3b3c274
LP
770 if (getpid() == 1)
771 freeze();
772
60918275
LP
773 return retval;
774}