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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ | |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <dbus/dbus.h> | |
23 | ||
24 | #include <stdio.h> | |
25 | #include <errno.h> | |
26 | #include <string.h> | |
27 | #include <unistd.h> | |
28 | #include <sys/types.h> | |
29 | #include <sys/stat.h> | |
30 | #include <getopt.h> | |
31 | #include <signal.h> | |
32 | #include <sys/wait.h> | |
33 | #include <fcntl.h> | |
34 | #include <sys/prctl.h> | |
35 | ||
36 | #include "manager.h" | |
37 | #include "log.h" | |
38 | #include "mount-setup.h" | |
39 | #include "hostname-setup.h" | |
40 | #include "loopback-setup.h" | |
41 | #include "kmod-setup.h" | |
42 | #include "locale-setup.h" | |
43 | #include "selinux-setup.h" | |
44 | #include "ima-setup.h" | |
45 | #include "machine-id-setup.h" | |
46 | #include "load-fragment.h" | |
47 | #include "fdset.h" | |
48 | #include "special.h" | |
49 | #include "conf-parser.h" | |
50 | #include "bus-errors.h" | |
51 | #include "missing.h" | |
52 | #include "label.h" | |
53 | #include "build.h" | |
54 | #include "strv.h" | |
55 | #include "def.h" | |
56 | #include "virt.h" | |
57 | #include "watchdog.h" | |
58 | ||
59 | static enum { | |
60 | ACTION_RUN, | |
61 | ACTION_HELP, | |
62 | ACTION_TEST, | |
63 | ACTION_DUMP_CONFIGURATION_ITEMS, | |
64 | ACTION_DONE | |
65 | } arg_action = ACTION_RUN; | |
66 | ||
67 | static char *arg_default_unit = NULL; | |
68 | static ManagerRunningAs arg_running_as = _MANAGER_RUNNING_AS_INVALID; | |
69 | ||
70 | static bool arg_dump_core = true; | |
71 | static bool arg_crash_shell = false; | |
72 | static int arg_crash_chvt = -1; | |
73 | static bool arg_confirm_spawn = false; | |
74 | static bool arg_show_status = true; | |
75 | #ifdef HAVE_SYSV_COMPAT | |
76 | static bool arg_sysv_console = true; | |
77 | #endif | |
78 | static bool arg_mount_auto = true; | |
79 | static bool arg_swap_auto = true; | |
80 | static char **arg_default_controllers = NULL; | |
81 | static char ***arg_join_controllers = NULL; | |
82 | static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL; | |
83 | static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT; | |
84 | static usec_t arg_runtime_watchdog = 0; | |
85 | static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE; | |
86 | ||
87 | static FILE* serialization = NULL; | |
88 | ||
89 | static void nop_handler(int sig) { | |
90 | } | |
91 | ||
92 | _noreturn_ static void crash(int sig) { | |
93 | ||
94 | if (!arg_dump_core) | |
95 | log_error("Caught <%s>, not dumping core.", signal_to_string(sig)); | |
96 | else { | |
97 | struct sigaction sa; | |
98 | pid_t pid; | |
99 | ||
100 | /* We want to wait for the core process, hence let's enable SIGCHLD */ | |
101 | zero(sa); | |
102 | sa.sa_handler = nop_handler; | |
103 | sa.sa_flags = SA_NOCLDSTOP|SA_RESTART; | |
104 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); | |
105 | ||
106 | if ((pid = fork()) < 0) | |
107 | log_error("Caught <%s>, cannot fork for core dump: %s", signal_to_string(sig), strerror(errno)); | |
108 | ||
109 | else if (pid == 0) { | |
110 | struct rlimit rl; | |
111 | ||
112 | /* Enable default signal handler for core dump */ | |
113 | zero(sa); | |
114 | sa.sa_handler = SIG_DFL; | |
115 | assert_se(sigaction(sig, &sa, NULL) == 0); | |
116 | ||
117 | /* Don't limit the core dump size */ | |
118 | zero(rl); | |
119 | rl.rlim_cur = RLIM_INFINITY; | |
120 | rl.rlim_max = RLIM_INFINITY; | |
121 | setrlimit(RLIMIT_CORE, &rl); | |
122 | ||
123 | /* Just to be sure... */ | |
124 | assert_se(chdir("/") == 0); | |
125 | ||
126 | /* Raise the signal again */ | |
127 | raise(sig); | |
128 | ||
129 | assert_not_reached("We shouldn't be here..."); | |
130 | _exit(1); | |
131 | ||
132 | } else { | |
133 | siginfo_t status; | |
134 | int r; | |
135 | ||
136 | /* Order things nicely. */ | |
137 | if ((r = wait_for_terminate(pid, &status)) < 0) | |
138 | log_error("Caught <%s>, waitpid() failed: %s", signal_to_string(sig), strerror(-r)); | |
139 | else if (status.si_code != CLD_DUMPED) | |
140 | log_error("Caught <%s>, core dump failed.", signal_to_string(sig)); | |
141 | else | |
142 | log_error("Caught <%s>, dumped core as pid %lu.", signal_to_string(sig), (unsigned long) pid); | |
143 | } | |
144 | } | |
145 | ||
146 | if (arg_crash_chvt) | |
147 | chvt(arg_crash_chvt); | |
148 | ||
149 | if (arg_crash_shell) { | |
150 | struct sigaction sa; | |
151 | pid_t pid; | |
152 | ||
153 | log_info("Executing crash shell in 10s..."); | |
154 | sleep(10); | |
155 | ||
156 | /* Let the kernel reap children for us */ | |
157 | zero(sa); | |
158 | sa.sa_handler = SIG_IGN; | |
159 | sa.sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART; | |
160 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); | |
161 | ||
162 | if ((pid = fork()) < 0) | |
163 | log_error("Failed to fork off crash shell: %s", strerror(errno)); | |
164 | else if (pid == 0) { | |
165 | int fd, r; | |
166 | ||
167 | if ((fd = acquire_terminal("/dev/console", false, true, true)) < 0) | |
168 | log_error("Failed to acquire terminal: %s", strerror(-fd)); | |
169 | else if ((r = make_stdio(fd)) < 0) | |
170 | log_error("Failed to duplicate terminal fd: %s", strerror(-r)); | |
171 | ||
172 | execl("/bin/sh", "/bin/sh", NULL); | |
173 | ||
174 | log_error("execl() failed: %s", strerror(errno)); | |
175 | _exit(1); | |
176 | } | |
177 | ||
178 | log_info("Successfully spawned crash shell as pid %lu.", (unsigned long) pid); | |
179 | } | |
180 | ||
181 | log_info("Freezing execution."); | |
182 | freeze(); | |
183 | } | |
184 | ||
185 | static void install_crash_handler(void) { | |
186 | struct sigaction sa; | |
187 | ||
188 | zero(sa); | |
189 | ||
190 | sa.sa_handler = crash; | |
191 | sa.sa_flags = SA_NODEFER; | |
192 | ||
193 | sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1); | |
194 | } | |
195 | ||
196 | static int console_setup(bool do_reset) { | |
197 | int tty_fd, r; | |
198 | ||
199 | /* If we are init, we connect stdin/stdout/stderr to /dev/null | |
200 | * and make sure we don't have a controlling tty. */ | |
201 | ||
202 | release_terminal(); | |
203 | ||
204 | if (!do_reset) | |
205 | return 0; | |
206 | ||
207 | tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC); | |
208 | if (tty_fd < 0) { | |
209 | log_error("Failed to open /dev/console: %s", strerror(-tty_fd)); | |
210 | return -tty_fd; | |
211 | } | |
212 | ||
213 | /* We don't want to force text mode. | |
214 | * plymouth may be showing pictures already from initrd. */ | |
215 | r = reset_terminal_fd(tty_fd, false); | |
216 | if (r < 0) | |
217 | log_error("Failed to reset /dev/console: %s", strerror(-r)); | |
218 | ||
219 | close_nointr_nofail(tty_fd); | |
220 | return r; | |
221 | } | |
222 | ||
223 | static int set_default_unit(const char *u) { | |
224 | char *c; | |
225 | ||
226 | assert(u); | |
227 | ||
228 | if (!(c = strdup(u))) | |
229 | return -ENOMEM; | |
230 | ||
231 | free(arg_default_unit); | |
232 | arg_default_unit = c; | |
233 | return 0; | |
234 | } | |
235 | ||
236 | static int parse_proc_cmdline_word(const char *word) { | |
237 | ||
238 | static const char * const rlmap[] = { | |
239 | "emergency", SPECIAL_EMERGENCY_TARGET, | |
240 | "-b", SPECIAL_EMERGENCY_TARGET, | |
241 | "single", SPECIAL_RESCUE_TARGET, | |
242 | "-s", SPECIAL_RESCUE_TARGET, | |
243 | "s", SPECIAL_RESCUE_TARGET, | |
244 | "S", SPECIAL_RESCUE_TARGET, | |
245 | "1", SPECIAL_RESCUE_TARGET, | |
246 | "2", SPECIAL_RUNLEVEL2_TARGET, | |
247 | "3", SPECIAL_RUNLEVEL3_TARGET, | |
248 | "4", SPECIAL_RUNLEVEL4_TARGET, | |
249 | "5", SPECIAL_RUNLEVEL5_TARGET, | |
250 | }; | |
251 | ||
252 | assert(word); | |
253 | ||
254 | if (startswith(word, "systemd.unit=")) | |
255 | return set_default_unit(word + 13); | |
256 | ||
257 | else if (startswith(word, "systemd.log_target=")) { | |
258 | ||
259 | if (log_set_target_from_string(word + 19) < 0) | |
260 | log_warning("Failed to parse log target %s. Ignoring.", word + 19); | |
261 | ||
262 | } else if (startswith(word, "systemd.log_level=")) { | |
263 | ||
264 | if (log_set_max_level_from_string(word + 18) < 0) | |
265 | log_warning("Failed to parse log level %s. Ignoring.", word + 18); | |
266 | ||
267 | } else if (startswith(word, "systemd.log_color=")) { | |
268 | ||
269 | if (log_show_color_from_string(word + 18) < 0) | |
270 | log_warning("Failed to parse log color setting %s. Ignoring.", word + 18); | |
271 | ||
272 | } else if (startswith(word, "systemd.log_location=")) { | |
273 | ||
274 | if (log_show_location_from_string(word + 21) < 0) | |
275 | log_warning("Failed to parse log location setting %s. Ignoring.", word + 21); | |
276 | ||
277 | } else if (startswith(word, "systemd.dump_core=")) { | |
278 | int r; | |
279 | ||
280 | if ((r = parse_boolean(word + 18)) < 0) | |
281 | log_warning("Failed to parse dump core switch %s. Ignoring.", word + 18); | |
282 | else | |
283 | arg_dump_core = r; | |
284 | ||
285 | } else if (startswith(word, "systemd.crash_shell=")) { | |
286 | int r; | |
287 | ||
288 | if ((r = parse_boolean(word + 20)) < 0) | |
289 | log_warning("Failed to parse crash shell switch %s. Ignoring.", word + 20); | |
290 | else | |
291 | arg_crash_shell = r; | |
292 | ||
293 | } else if (startswith(word, "systemd.confirm_spawn=")) { | |
294 | int r; | |
295 | ||
296 | if ((r = parse_boolean(word + 22)) < 0) | |
297 | log_warning("Failed to parse confirm spawn switch %s. Ignoring.", word + 22); | |
298 | else | |
299 | arg_confirm_spawn = r; | |
300 | ||
301 | } else if (startswith(word, "systemd.crash_chvt=")) { | |
302 | int k; | |
303 | ||
304 | if (safe_atoi(word + 19, &k) < 0) | |
305 | log_warning("Failed to parse crash chvt switch %s. Ignoring.", word + 19); | |
306 | else | |
307 | arg_crash_chvt = k; | |
308 | ||
309 | } else if (startswith(word, "systemd.show_status=")) { | |
310 | int r; | |
311 | ||
312 | if ((r = parse_boolean(word + 20)) < 0) | |
313 | log_warning("Failed to parse show status switch %s. Ignoring.", word + 20); | |
314 | else | |
315 | arg_show_status = r; | |
316 | } else if (startswith(word, "systemd.default_standard_output=")) { | |
317 | int r; | |
318 | ||
319 | if ((r = exec_output_from_string(word + 32)) < 0) | |
320 | log_warning("Failed to parse default standard output switch %s. Ignoring.", word + 32); | |
321 | else | |
322 | arg_default_std_output = r; | |
323 | } else if (startswith(word, "systemd.default_standard_error=")) { | |
324 | int r; | |
325 | ||
326 | if ((r = exec_output_from_string(word + 31)) < 0) | |
327 | log_warning("Failed to parse default standard error switch %s. Ignoring.", word + 31); | |
328 | else | |
329 | arg_default_std_error = r; | |
330 | } else if (startswith(word, "systemd.setenv=")) { | |
331 | char *cenv, *eq; | |
332 | int r; | |
333 | ||
334 | cenv = strdup(word + 15); | |
335 | if (!cenv) | |
336 | return -ENOMEM; | |
337 | ||
338 | eq = strchr(cenv, '='); | |
339 | if (!eq) { | |
340 | r = unsetenv(cenv); | |
341 | if (r < 0) | |
342 | log_warning("unsetenv failed %s. Ignoring.", strerror(errno)); | |
343 | } else { | |
344 | *eq = 0; | |
345 | r = setenv(cenv, eq + 1, 1); | |
346 | if (r < 0) | |
347 | log_warning("setenv failed %s. Ignoring.", strerror(errno)); | |
348 | } | |
349 | free(cenv); | |
350 | #ifdef HAVE_SYSV_COMPAT | |
351 | } else if (startswith(word, "systemd.sysv_console=")) { | |
352 | int r; | |
353 | ||
354 | if ((r = parse_boolean(word + 21)) < 0) | |
355 | log_warning("Failed to parse SysV console switch %s. Ignoring.", word + 20); | |
356 | else | |
357 | arg_sysv_console = r; | |
358 | #endif | |
359 | ||
360 | } else if (startswith(word, "systemd.")) { | |
361 | ||
362 | log_warning("Unknown kernel switch %s. Ignoring.", word); | |
363 | ||
364 | log_info("Supported kernel switches:\n" | |
365 | "systemd.unit=UNIT Default unit to start\n" | |
366 | "systemd.dump_core=0|1 Dump core on crash\n" | |
367 | "systemd.crash_shell=0|1 Run shell on crash\n" | |
368 | "systemd.crash_chvt=N Change to VT #N on crash\n" | |
369 | "systemd.confirm_spawn=0|1 Confirm every process spawn\n" | |
370 | "systemd.show_status=0|1 Show status updates on the console during bootup\n" | |
371 | #ifdef HAVE_SYSV_COMPAT | |
372 | "systemd.sysv_console=0|1 Connect output of SysV scripts to console\n" | |
373 | #endif | |
374 | "systemd.log_target=console|kmsg|journal|journal-or-kmsg|syslog|syslog-or-kmsg|null\n" | |
375 | " Log target\n" | |
376 | "systemd.log_level=LEVEL Log level\n" | |
377 | "systemd.log_color=0|1 Highlight important log messages\n" | |
378 | "systemd.log_location=0|1 Include code location in log messages\n" | |
379 | "systemd.default_standard_output=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n" | |
380 | " Set default log output for services\n" | |
381 | "systemd.default_standard_error=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n" | |
382 | " Set default log error output for services\n"); | |
383 | ||
384 | } else if (streq(word, "quiet")) { | |
385 | arg_show_status = false; | |
386 | #ifdef HAVE_SYSV_COMPAT | |
387 | arg_sysv_console = false; | |
388 | #endif | |
389 | } else { | |
390 | unsigned i; | |
391 | ||
392 | /* SysV compatibility */ | |
393 | for (i = 0; i < ELEMENTSOF(rlmap); i += 2) | |
394 | if (streq(word, rlmap[i])) | |
395 | return set_default_unit(rlmap[i+1]); | |
396 | } | |
397 | ||
398 | return 0; | |
399 | } | |
400 | ||
401 | static int config_parse_level2( | |
402 | const char *filename, | |
403 | unsigned line, | |
404 | const char *section, | |
405 | const char *lvalue, | |
406 | int ltype, | |
407 | const char *rvalue, | |
408 | void *data, | |
409 | void *userdata) { | |
410 | ||
411 | assert(filename); | |
412 | assert(lvalue); | |
413 | assert(rvalue); | |
414 | ||
415 | log_set_max_level_from_string(rvalue); | |
416 | return 0; | |
417 | } | |
418 | ||
419 | static int config_parse_target( | |
420 | const char *filename, | |
421 | unsigned line, | |
422 | const char *section, | |
423 | const char *lvalue, | |
424 | int ltype, | |
425 | const char *rvalue, | |
426 | void *data, | |
427 | void *userdata) { | |
428 | ||
429 | assert(filename); | |
430 | assert(lvalue); | |
431 | assert(rvalue); | |
432 | ||
433 | log_set_target_from_string(rvalue); | |
434 | return 0; | |
435 | } | |
436 | ||
437 | static int config_parse_color( | |
438 | const char *filename, | |
439 | unsigned line, | |
440 | const char *section, | |
441 | const char *lvalue, | |
442 | int ltype, | |
443 | const char *rvalue, | |
444 | void *data, | |
445 | void *userdata) { | |
446 | ||
447 | assert(filename); | |
448 | assert(lvalue); | |
449 | assert(rvalue); | |
450 | ||
451 | log_show_color_from_string(rvalue); | |
452 | return 0; | |
453 | } | |
454 | ||
455 | static int config_parse_location( | |
456 | const char *filename, | |
457 | unsigned line, | |
458 | const char *section, | |
459 | const char *lvalue, | |
460 | int ltype, | |
461 | const char *rvalue, | |
462 | void *data, | |
463 | void *userdata) { | |
464 | ||
465 | assert(filename); | |
466 | assert(lvalue); | |
467 | assert(rvalue); | |
468 | ||
469 | log_show_location_from_string(rvalue); | |
470 | return 0; | |
471 | } | |
472 | ||
473 | static int config_parse_cpu_affinity2( | |
474 | const char *filename, | |
475 | unsigned line, | |
476 | const char *section, | |
477 | const char *lvalue, | |
478 | int ltype, | |
479 | const char *rvalue, | |
480 | void *data, | |
481 | void *userdata) { | |
482 | ||
483 | char *w; | |
484 | size_t l; | |
485 | char *state; | |
486 | cpu_set_t *c = NULL; | |
487 | unsigned ncpus = 0; | |
488 | ||
489 | assert(filename); | |
490 | assert(lvalue); | |
491 | assert(rvalue); | |
492 | ||
493 | FOREACH_WORD_QUOTED(w, l, rvalue, state) { | |
494 | char *t; | |
495 | int r; | |
496 | unsigned cpu; | |
497 | ||
498 | if (!(t = strndup(w, l))) | |
499 | return -ENOMEM; | |
500 | ||
501 | r = safe_atou(t, &cpu); | |
502 | free(t); | |
503 | ||
504 | if (!c) | |
505 | if (!(c = cpu_set_malloc(&ncpus))) | |
506 | return -ENOMEM; | |
507 | ||
508 | if (r < 0 || cpu >= ncpus) { | |
509 | log_error("[%s:%u] Failed to parse CPU affinity: %s", filename, line, rvalue); | |
510 | CPU_FREE(c); | |
511 | return -EBADMSG; | |
512 | } | |
513 | ||
514 | CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c); | |
515 | } | |
516 | ||
517 | if (c) { | |
518 | if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0) | |
519 | log_warning("Failed to set CPU affinity: %m"); | |
520 | ||
521 | CPU_FREE(c); | |
522 | } | |
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
527 | static void strv_free_free(char ***l) { | |
528 | char ***i; | |
529 | ||
530 | if (!l) | |
531 | return; | |
532 | ||
533 | for (i = l; *i; i++) | |
534 | strv_free(*i); | |
535 | ||
536 | free(l); | |
537 | } | |
538 | ||
539 | static void free_join_controllers(void) { | |
540 | if (!arg_join_controllers) | |
541 | return; | |
542 | ||
543 | strv_free_free(arg_join_controllers); | |
544 | arg_join_controllers = NULL; | |
545 | } | |
546 | ||
547 | static int config_parse_join_controllers( | |
548 | const char *filename, | |
549 | unsigned line, | |
550 | const char *section, | |
551 | const char *lvalue, | |
552 | int ltype, | |
553 | const char *rvalue, | |
554 | void *data, | |
555 | void *userdata) { | |
556 | ||
557 | unsigned n = 0; | |
558 | char *state, *w; | |
559 | size_t length; | |
560 | ||
561 | assert(filename); | |
562 | assert(lvalue); | |
563 | assert(rvalue); | |
564 | ||
565 | free_join_controllers(); | |
566 | ||
567 | FOREACH_WORD_QUOTED(w, length, rvalue, state) { | |
568 | char *s, **l; | |
569 | ||
570 | s = strndup(w, length); | |
571 | if (!s) | |
572 | return -ENOMEM; | |
573 | ||
574 | l = strv_split(s, ","); | |
575 | free(s); | |
576 | ||
577 | strv_uniq(l); | |
578 | ||
579 | if (strv_length(l) <= 1) { | |
580 | strv_free(l); | |
581 | continue; | |
582 | } | |
583 | ||
584 | if (!arg_join_controllers) { | |
585 | arg_join_controllers = new(char**, 2); | |
586 | if (!arg_join_controllers) { | |
587 | strv_free(l); | |
588 | return -ENOMEM; | |
589 | } | |
590 | ||
591 | arg_join_controllers[0] = l; | |
592 | arg_join_controllers[1] = NULL; | |
593 | ||
594 | n = 1; | |
595 | } else { | |
596 | char ***a; | |
597 | char ***t; | |
598 | ||
599 | t = new0(char**, n+2); | |
600 | if (!t) { | |
601 | strv_free(l); | |
602 | return -ENOMEM; | |
603 | } | |
604 | ||
605 | n = 0; | |
606 | ||
607 | for (a = arg_join_controllers; *a; a++) { | |
608 | ||
609 | if (strv_overlap(*a, l)) { | |
610 | char **c; | |
611 | ||
612 | c = strv_merge(*a, l); | |
613 | if (!c) { | |
614 | strv_free(l); | |
615 | strv_free_free(t); | |
616 | return -ENOMEM; | |
617 | } | |
618 | ||
619 | strv_free(l); | |
620 | l = c; | |
621 | } else { | |
622 | char **c; | |
623 | ||
624 | c = strv_copy(*a); | |
625 | if (!c) { | |
626 | strv_free(l); | |
627 | strv_free_free(t); | |
628 | return -ENOMEM; | |
629 | } | |
630 | ||
631 | t[n++] = c; | |
632 | } | |
633 | } | |
634 | ||
635 | t[n++] = strv_uniq(l); | |
636 | ||
637 | strv_free_free(arg_join_controllers); | |
638 | arg_join_controllers = t; | |
639 | } | |
640 | } | |
641 | ||
642 | return 0; | |
643 | } | |
644 | ||
645 | static int parse_config_file(void) { | |
646 | ||
647 | const ConfigTableItem items[] = { | |
648 | { "Manager", "LogLevel", config_parse_level2, 0, NULL }, | |
649 | { "Manager", "LogTarget", config_parse_target, 0, NULL }, | |
650 | { "Manager", "LogColor", config_parse_color, 0, NULL }, | |
651 | { "Manager", "LogLocation", config_parse_location, 0, NULL }, | |
652 | { "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core }, | |
653 | { "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell }, | |
654 | { "Manager", "ShowStatus", config_parse_bool, 0, &arg_show_status }, | |
655 | #ifdef HAVE_SYSV_COMPAT | |
656 | { "Manager", "SysVConsole", config_parse_bool, 0, &arg_sysv_console }, | |
657 | #endif | |
658 | { "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt }, | |
659 | { "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL }, | |
660 | { "Manager", "MountAuto", config_parse_bool, 0, &arg_mount_auto }, | |
661 | { "Manager", "SwapAuto", config_parse_bool, 0, &arg_swap_auto }, | |
662 | { "Manager", "DefaultControllers", config_parse_strv, 0, &arg_default_controllers }, | |
663 | { "Manager", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output }, | |
664 | { "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error }, | |
665 | { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers }, | |
666 | { "Manager", "RuntimeWatchdogSec", config_parse_usec, 0, &arg_runtime_watchdog }, | |
667 | { "Manager", "ShutdownWatchdogSec", config_parse_usec, 0, &arg_shutdown_watchdog }, | |
668 | { NULL, NULL, NULL, 0, NULL } | |
669 | }; | |
670 | ||
671 | FILE *f; | |
672 | const char *fn; | |
673 | int r; | |
674 | ||
675 | fn = arg_running_as == MANAGER_SYSTEM ? SYSTEM_CONFIG_FILE : USER_CONFIG_FILE; | |
676 | f = fopen(fn, "re"); | |
677 | if (!f) { | |
678 | if (errno == ENOENT) | |
679 | return 0; | |
680 | ||
681 | log_warning("Failed to open configuration file '%s': %m", fn); | |
682 | return 0; | |
683 | } | |
684 | ||
685 | r = config_parse(fn, f, "Manager\0", config_item_table_lookup, (void*) items, false, NULL); | |
686 | if (r < 0) | |
687 | log_warning("Failed to parse configuration file: %s", strerror(-r)); | |
688 | ||
689 | fclose(f); | |
690 | ||
691 | return 0; | |
692 | } | |
693 | ||
694 | static int parse_proc_cmdline(void) { | |
695 | char *line, *w, *state; | |
696 | int r; | |
697 | size_t l; | |
698 | ||
699 | /* Don't read /proc/cmdline if we are in a container, since | |
700 | * that is only relevant for the host system */ | |
701 | if (detect_container(NULL) > 0) | |
702 | return 0; | |
703 | ||
704 | if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) { | |
705 | log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r)); | |
706 | return 0; | |
707 | } | |
708 | ||
709 | FOREACH_WORD_QUOTED(w, l, line, state) { | |
710 | char *word; | |
711 | ||
712 | if (!(word = strndup(w, l))) { | |
713 | r = -ENOMEM; | |
714 | goto finish; | |
715 | } | |
716 | ||
717 | r = parse_proc_cmdline_word(word); | |
718 | free(word); | |
719 | ||
720 | if (r < 0) | |
721 | goto finish; | |
722 | } | |
723 | ||
724 | r = 0; | |
725 | ||
726 | finish: | |
727 | free(line); | |
728 | return r; | |
729 | } | |
730 | ||
731 | static int parse_argv(int argc, char *argv[]) { | |
732 | ||
733 | enum { | |
734 | ARG_LOG_LEVEL = 0x100, | |
735 | ARG_LOG_TARGET, | |
736 | ARG_LOG_COLOR, | |
737 | ARG_LOG_LOCATION, | |
738 | ARG_UNIT, | |
739 | ARG_SYSTEM, | |
740 | ARG_USER, | |
741 | ARG_TEST, | |
742 | ARG_DUMP_CONFIGURATION_ITEMS, | |
743 | ARG_DUMP_CORE, | |
744 | ARG_CRASH_SHELL, | |
745 | ARG_CONFIRM_SPAWN, | |
746 | ARG_SHOW_STATUS, | |
747 | ARG_SYSV_CONSOLE, | |
748 | ARG_DESERIALIZE, | |
749 | ARG_INTROSPECT, | |
750 | ARG_DEFAULT_STD_OUTPUT, | |
751 | ARG_DEFAULT_STD_ERROR | |
752 | }; | |
753 | ||
754 | static const struct option options[] = { | |
755 | { "log-level", required_argument, NULL, ARG_LOG_LEVEL }, | |
756 | { "log-target", required_argument, NULL, ARG_LOG_TARGET }, | |
757 | { "log-color", optional_argument, NULL, ARG_LOG_COLOR }, | |
758 | { "log-location", optional_argument, NULL, ARG_LOG_LOCATION }, | |
759 | { "unit", required_argument, NULL, ARG_UNIT }, | |
760 | { "system", no_argument, NULL, ARG_SYSTEM }, | |
761 | { "user", no_argument, NULL, ARG_USER }, | |
762 | { "test", no_argument, NULL, ARG_TEST }, | |
763 | { "help", no_argument, NULL, 'h' }, | |
764 | { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS }, | |
765 | { "dump-core", no_argument, NULL, ARG_DUMP_CORE }, | |
766 | { "crash-shell", no_argument, NULL, ARG_CRASH_SHELL }, | |
767 | { "confirm-spawn", no_argument, NULL, ARG_CONFIRM_SPAWN }, | |
768 | { "show-status", optional_argument, NULL, ARG_SHOW_STATUS }, | |
769 | #ifdef HAVE_SYSV_COMPAT | |
770 | { "sysv-console", optional_argument, NULL, ARG_SYSV_CONSOLE }, | |
771 | #endif | |
772 | { "deserialize", required_argument, NULL, ARG_DESERIALIZE }, | |
773 | { "introspect", optional_argument, NULL, ARG_INTROSPECT }, | |
774 | { "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, }, | |
775 | { "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, }, | |
776 | { NULL, 0, NULL, 0 } | |
777 | }; | |
778 | ||
779 | int c, r; | |
780 | ||
781 | assert(argc >= 1); | |
782 | assert(argv); | |
783 | ||
784 | if (getpid() == 1) | |
785 | opterr = 0; | |
786 | ||
787 | while ((c = getopt_long(argc, argv, "hDbsz:", options, NULL)) >= 0) | |
788 | ||
789 | switch (c) { | |
790 | ||
791 | case ARG_LOG_LEVEL: | |
792 | if ((r = log_set_max_level_from_string(optarg)) < 0) { | |
793 | log_error("Failed to parse log level %s.", optarg); | |
794 | return r; | |
795 | } | |
796 | ||
797 | break; | |
798 | ||
799 | case ARG_LOG_TARGET: | |
800 | ||
801 | if ((r = log_set_target_from_string(optarg)) < 0) { | |
802 | log_error("Failed to parse log target %s.", optarg); | |
803 | return r; | |
804 | } | |
805 | ||
806 | break; | |
807 | ||
808 | case ARG_LOG_COLOR: | |
809 | ||
810 | if (optarg) { | |
811 | if ((r = log_show_color_from_string(optarg)) < 0) { | |
812 | log_error("Failed to parse log color setting %s.", optarg); | |
813 | return r; | |
814 | } | |
815 | } else | |
816 | log_show_color(true); | |
817 | ||
818 | break; | |
819 | ||
820 | case ARG_LOG_LOCATION: | |
821 | ||
822 | if (optarg) { | |
823 | if ((r = log_show_location_from_string(optarg)) < 0) { | |
824 | log_error("Failed to parse log location setting %s.", optarg); | |
825 | return r; | |
826 | } | |
827 | } else | |
828 | log_show_location(true); | |
829 | ||
830 | break; | |
831 | ||
832 | case ARG_DEFAULT_STD_OUTPUT: | |
833 | ||
834 | if ((r = exec_output_from_string(optarg)) < 0) { | |
835 | log_error("Failed to parse default standard output setting %s.", optarg); | |
836 | return r; | |
837 | } else | |
838 | arg_default_std_output = r; | |
839 | break; | |
840 | ||
841 | case ARG_DEFAULT_STD_ERROR: | |
842 | ||
843 | if ((r = exec_output_from_string(optarg)) < 0) { | |
844 | log_error("Failed to parse default standard error output setting %s.", optarg); | |
845 | return r; | |
846 | } else | |
847 | arg_default_std_error = r; | |
848 | break; | |
849 | ||
850 | case ARG_UNIT: | |
851 | ||
852 | if ((r = set_default_unit(optarg)) < 0) { | |
853 | log_error("Failed to set default unit %s: %s", optarg, strerror(-r)); | |
854 | return r; | |
855 | } | |
856 | ||
857 | break; | |
858 | ||
859 | case ARG_SYSTEM: | |
860 | arg_running_as = MANAGER_SYSTEM; | |
861 | break; | |
862 | ||
863 | case ARG_USER: | |
864 | arg_running_as = MANAGER_USER; | |
865 | break; | |
866 | ||
867 | case ARG_TEST: | |
868 | arg_action = ACTION_TEST; | |
869 | break; | |
870 | ||
871 | case ARG_DUMP_CONFIGURATION_ITEMS: | |
872 | arg_action = ACTION_DUMP_CONFIGURATION_ITEMS; | |
873 | break; | |
874 | ||
875 | case ARG_DUMP_CORE: | |
876 | arg_dump_core = true; | |
877 | break; | |
878 | ||
879 | case ARG_CRASH_SHELL: | |
880 | arg_crash_shell = true; | |
881 | break; | |
882 | ||
883 | case ARG_CONFIRM_SPAWN: | |
884 | arg_confirm_spawn = true; | |
885 | break; | |
886 | ||
887 | case ARG_SHOW_STATUS: | |
888 | ||
889 | if (optarg) { | |
890 | if ((r = parse_boolean(optarg)) < 0) { | |
891 | log_error("Failed to show status boolean %s.", optarg); | |
892 | return r; | |
893 | } | |
894 | arg_show_status = r; | |
895 | } else | |
896 | arg_show_status = true; | |
897 | break; | |
898 | #ifdef HAVE_SYSV_COMPAT | |
899 | case ARG_SYSV_CONSOLE: | |
900 | ||
901 | if (optarg) { | |
902 | if ((r = parse_boolean(optarg)) < 0) { | |
903 | log_error("Failed to SysV console boolean %s.", optarg); | |
904 | return r; | |
905 | } | |
906 | arg_sysv_console = r; | |
907 | } else | |
908 | arg_sysv_console = true; | |
909 | break; | |
910 | #endif | |
911 | ||
912 | case ARG_DESERIALIZE: { | |
913 | int fd; | |
914 | FILE *f; | |
915 | ||
916 | if ((r = safe_atoi(optarg, &fd)) < 0 || fd < 0) { | |
917 | log_error("Failed to parse deserialize option %s.", optarg); | |
918 | return r; | |
919 | } | |
920 | ||
921 | if (!(f = fdopen(fd, "r"))) { | |
922 | log_error("Failed to open serialization fd: %m"); | |
923 | return r; | |
924 | } | |
925 | ||
926 | if (serialization) | |
927 | fclose(serialization); | |
928 | ||
929 | serialization = f; | |
930 | ||
931 | break; | |
932 | } | |
933 | ||
934 | case ARG_INTROSPECT: { | |
935 | const char * const * i = NULL; | |
936 | ||
937 | for (i = bus_interface_table; *i; i += 2) | |
938 | if (!optarg || streq(i[0], optarg)) { | |
939 | fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE | |
940 | "<node>\n", stdout); | |
941 | fputs(i[1], stdout); | |
942 | fputs("</node>\n", stdout); | |
943 | ||
944 | if (optarg) | |
945 | break; | |
946 | } | |
947 | ||
948 | if (!i[0] && optarg) | |
949 | log_error("Unknown interface %s.", optarg); | |
950 | ||
951 | arg_action = ACTION_DONE; | |
952 | break; | |
953 | } | |
954 | ||
955 | case 'h': | |
956 | arg_action = ACTION_HELP; | |
957 | break; | |
958 | ||
959 | case 'D': | |
960 | log_set_max_level(LOG_DEBUG); | |
961 | break; | |
962 | ||
963 | case 'b': | |
964 | case 's': | |
965 | case 'z': | |
966 | /* Just to eat away the sysvinit kernel | |
967 | * cmdline args without getopt() error | |
968 | * messages that we'll parse in | |
969 | * parse_proc_cmdline_word() or ignore. */ | |
970 | ||
971 | case '?': | |
972 | default: | |
973 | if (getpid() != 1) { | |
974 | log_error("Unknown option code %c", c); | |
975 | return -EINVAL; | |
976 | } | |
977 | ||
978 | break; | |
979 | } | |
980 | ||
981 | if (optind < argc && getpid() != 1) { | |
982 | /* Hmm, when we aren't run as init system | |
983 | * let's complain about excess arguments */ | |
984 | ||
985 | log_error("Excess arguments."); | |
986 | return -EINVAL; | |
987 | } | |
988 | ||
989 | if (detect_container(NULL) > 0) { | |
990 | char **a; | |
991 | ||
992 | /* All /proc/cmdline arguments the kernel didn't | |
993 | * understand it passed to us. We're not really | |
994 | * interested in that usually since /proc/cmdline is | |
995 | * more interesting and complete. With one exception: | |
996 | * if we are run in a container /proc/cmdline is not | |
997 | * relevant for the container, hence we rely on argv[] | |
998 | * instead. */ | |
999 | ||
1000 | for (a = argv; a < argv + argc; a++) | |
1001 | if ((r = parse_proc_cmdline_word(*a)) < 0) | |
1002 | return r; | |
1003 | } | |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | static int help(void) { | |
1009 | ||
1010 | printf("%s [OPTIONS...]\n\n" | |
1011 | "Starts up and maintains the system or user services.\n\n" | |
1012 | " -h --help Show this help\n" | |
1013 | " --test Determine startup sequence, dump it and exit\n" | |
1014 | " --dump-configuration-items Dump understood unit configuration items\n" | |
1015 | " --introspect[=INTERFACE] Extract D-Bus interface data\n" | |
1016 | " --unit=UNIT Set default unit\n" | |
1017 | " --system Run a system instance, even if PID != 1\n" | |
1018 | " --user Run a user instance\n" | |
1019 | " --dump-core Dump core on crash\n" | |
1020 | " --crash-shell Run shell on crash\n" | |
1021 | " --confirm-spawn Ask for confirmation when spawning processes\n" | |
1022 | " --show-status[=0|1] Show status updates on the console during bootup\n" | |
1023 | #ifdef HAVE_SYSV_COMPAT | |
1024 | " --sysv-console[=0|1] Connect output of SysV scripts to console\n" | |
1025 | #endif | |
1026 | " --log-target=TARGET Set log target (console, journal, syslog, kmsg, journal-or-kmsg, syslog-or-kmsg, null)\n" | |
1027 | " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n" | |
1028 | " --log-color[=0|1] Highlight important log messages\n" | |
1029 | " --log-location[=0|1] Include code location in log messages\n" | |
1030 | " --default-standard-output= Set default standard output for services\n" | |
1031 | " --default-standard-error= Set default standard error output for services\n", | |
1032 | program_invocation_short_name); | |
1033 | ||
1034 | return 0; | |
1035 | } | |
1036 | ||
1037 | static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) { | |
1038 | FILE *f = NULL; | |
1039 | FDSet *fds = NULL; | |
1040 | int r; | |
1041 | ||
1042 | assert(m); | |
1043 | assert(_f); | |
1044 | assert(_fds); | |
1045 | ||
1046 | /* Make sure nothing is really destructed when we shut down */ | |
1047 | m->n_reloading ++; | |
1048 | ||
1049 | if ((r = manager_open_serialization(m, &f)) < 0) { | |
1050 | log_error("Failed to create serialization file: %s", strerror(-r)); | |
1051 | goto fail; | |
1052 | } | |
1053 | ||
1054 | if (!(fds = fdset_new())) { | |
1055 | r = -ENOMEM; | |
1056 | log_error("Failed to allocate fd set: %s", strerror(-r)); | |
1057 | goto fail; | |
1058 | } | |
1059 | ||
1060 | if ((r = manager_serialize(m, f, fds)) < 0) { | |
1061 | log_error("Failed to serialize state: %s", strerror(-r)); | |
1062 | goto fail; | |
1063 | } | |
1064 | ||
1065 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
1066 | log_error("Failed to rewind serialization fd: %m"); | |
1067 | goto fail; | |
1068 | } | |
1069 | ||
1070 | if ((r = fd_cloexec(fileno(f), false)) < 0) { | |
1071 | log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r)); | |
1072 | goto fail; | |
1073 | } | |
1074 | ||
1075 | if ((r = fdset_cloexec(fds, false)) < 0) { | |
1076 | log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r)); | |
1077 | goto fail; | |
1078 | } | |
1079 | ||
1080 | *_f = f; | |
1081 | *_fds = fds; | |
1082 | ||
1083 | return 0; | |
1084 | ||
1085 | fail: | |
1086 | fdset_free(fds); | |
1087 | ||
1088 | if (f) | |
1089 | fclose(f); | |
1090 | ||
1091 | return r; | |
1092 | } | |
1093 | ||
1094 | static struct dual_timestamp* parse_initrd_timestamp(struct dual_timestamp *t) { | |
1095 | const char *e; | |
1096 | unsigned long long a, b; | |
1097 | ||
1098 | assert(t); | |
1099 | ||
1100 | e = getenv("RD_TIMESTAMP"); | |
1101 | if (!e) | |
1102 | return NULL; | |
1103 | ||
1104 | if (sscanf(e, "%llu %llu", &a, &b) != 2) | |
1105 | return NULL; | |
1106 | ||
1107 | t->realtime = (usec_t) a; | |
1108 | t->monotonic = (usec_t) b; | |
1109 | ||
1110 | return t; | |
1111 | } | |
1112 | ||
1113 | static void test_mtab(void) { | |
1114 | char *p; | |
1115 | ||
1116 | /* Check that /etc/mtab is a symlink */ | |
1117 | ||
1118 | if (readlink_malloc("/etc/mtab", &p) >= 0) { | |
1119 | bool b; | |
1120 | ||
1121 | b = streq(p, "/proc/self/mounts") || streq(p, "/proc/mounts"); | |
1122 | free(p); | |
1123 | ||
1124 | if (b) | |
1125 | return; | |
1126 | } | |
1127 | ||
1128 | log_warning("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. " | |
1129 | "This is not supported anymore. " | |
1130 | "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output."); | |
1131 | } | |
1132 | ||
1133 | static void test_usr(void) { | |
1134 | ||
1135 | /* Check that /usr is not a separate fs */ | |
1136 | ||
1137 | if (dir_is_empty("/usr") <= 0) | |
1138 | return; | |
1139 | ||
1140 | log_warning("/usr appears to be on its own filesytem and is not already mounted. This is not a supported setup. " | |
1141 | "Some things will probably break (sometimes even silently) in mysterious ways. " | |
1142 | "Consult http://freedesktop.org/wiki/Software/systemd/separate-usr-is-broken for more information."); | |
1143 | } | |
1144 | ||
1145 | static void test_cgroups(void) { | |
1146 | ||
1147 | if (access("/proc/cgroups", F_OK) >= 0) | |
1148 | return; | |
1149 | ||
1150 | log_warning("CONFIG_CGROUPS was not set when your kernel was compiled. " | |
1151 | "Systems without control groups are not supported. " | |
1152 | "We will now sleep for 10s, and then continue boot-up. " | |
1153 | "Expect breakage and please do not file bugs. " | |
1154 | "Instead fix your kernel and enable CONFIG_CGROUPS. " | |
1155 | "Consult http://0pointer.de/blog/projects/cgroups-vs-cgroups.html for more information."); | |
1156 | ||
1157 | sleep(10); | |
1158 | } | |
1159 | ||
1160 | int main(int argc, char *argv[]) { | |
1161 | Manager *m = NULL; | |
1162 | int r, retval = EXIT_FAILURE; | |
1163 | usec_t before_startup, after_startup; | |
1164 | char timespan[FORMAT_TIMESPAN_MAX]; | |
1165 | FDSet *fds = NULL; | |
1166 | bool reexecute = false; | |
1167 | const char *shutdown_verb = NULL; | |
1168 | dual_timestamp initrd_timestamp = { 0ULL, 0ULL }; | |
1169 | static char systemd[] = "systemd"; | |
1170 | bool is_reexec = false; | |
1171 | int j; | |
1172 | bool loaded_policy = false; | |
1173 | bool arm_reboot_watchdog = false; | |
1174 | ||
1175 | #ifdef HAVE_SYSV_COMPAT | |
1176 | if (getpid() != 1 && strstr(program_invocation_short_name, "init")) { | |
1177 | /* This is compatibility support for SysV, where | |
1178 | * calling init as a user is identical to telinit. */ | |
1179 | ||
1180 | errno = -ENOENT; | |
1181 | execv(SYSTEMCTL_BINARY_PATH, argv); | |
1182 | log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m"); | |
1183 | return 1; | |
1184 | } | |
1185 | #endif | |
1186 | ||
1187 | /* Determine if this is a reexecution or normal bootup. We do | |
1188 | * the full command line parsing much later, so let's just | |
1189 | * have a quick peek here. */ | |
1190 | ||
1191 | for (j = 1; j < argc; j++) | |
1192 | if (streq(argv[j], "--deserialize")) { | |
1193 | is_reexec = true; | |
1194 | break; | |
1195 | } | |
1196 | ||
1197 | /* If we get started via the /sbin/init symlink then we are | |
1198 | called 'init'. After a subsequent reexecution we are then | |
1199 | called 'systemd'. That is confusing, hence let's call us | |
1200 | systemd right-away. */ | |
1201 | program_invocation_short_name = systemd; | |
1202 | prctl(PR_SET_NAME, systemd); | |
1203 | ||
1204 | saved_argv = argv; | |
1205 | saved_argc = argc; | |
1206 | ||
1207 | log_show_color(isatty(STDERR_FILENO) > 0); | |
1208 | log_show_location(false); | |
1209 | log_set_max_level(LOG_INFO); | |
1210 | ||
1211 | if (getpid() == 1) { | |
1212 | arg_running_as = MANAGER_SYSTEM; | |
1213 | log_set_target(detect_container(NULL) > 0 ? LOG_TARGET_CONSOLE : LOG_TARGET_JOURNAL_OR_KMSG); | |
1214 | ||
1215 | if (!is_reexec) { | |
1216 | if (selinux_setup(&loaded_policy) < 0) | |
1217 | goto finish; | |
1218 | if (ima_setup() < 0) | |
1219 | goto finish; | |
1220 | } | |
1221 | ||
1222 | log_open(); | |
1223 | ||
1224 | if (label_init() < 0) | |
1225 | goto finish; | |
1226 | ||
1227 | if (!is_reexec) | |
1228 | if (hwclock_is_localtime() > 0) { | |
1229 | int min; | |
1230 | ||
1231 | r = hwclock_apply_localtime_delta(&min); | |
1232 | if (r < 0) | |
1233 | log_error("Failed to apply local time delta, ignoring: %s", strerror(-r)); | |
1234 | else | |
1235 | log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min); | |
1236 | } | |
1237 | ||
1238 | } else { | |
1239 | arg_running_as = MANAGER_USER; | |
1240 | log_set_target(LOG_TARGET_AUTO); | |
1241 | log_open(); | |
1242 | } | |
1243 | ||
1244 | /* Initialize default unit */ | |
1245 | if (set_default_unit(SPECIAL_DEFAULT_TARGET) < 0) | |
1246 | goto finish; | |
1247 | ||
1248 | /* By default, mount "cpu" and "cpuacct" together */ | |
1249 | arg_join_controllers = new(char**, 2); | |
1250 | if (!arg_join_controllers) | |
1251 | goto finish; | |
1252 | ||
1253 | arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL); | |
1254 | arg_join_controllers[1] = NULL; | |
1255 | ||
1256 | if (!arg_join_controllers[0]) | |
1257 | goto finish; | |
1258 | ||
1259 | /* Mount /proc, /sys and friends, so that /proc/cmdline and | |
1260 | * /proc/$PID/fd is available. */ | |
1261 | if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS")) { | |
1262 | r = mount_setup(loaded_policy); | |
1263 | if (r < 0) | |
1264 | goto finish; | |
1265 | } | |
1266 | ||
1267 | /* Reset all signal handlers. */ | |
1268 | assert_se(reset_all_signal_handlers() == 0); | |
1269 | ||
1270 | /* If we are init, we can block sigkill. Yay. */ | |
1271 | ignore_signals(SIGNALS_IGNORE, -1); | |
1272 | ||
1273 | if (parse_config_file() < 0) | |
1274 | goto finish; | |
1275 | ||
1276 | if (arg_running_as == MANAGER_SYSTEM) | |
1277 | if (parse_proc_cmdline() < 0) | |
1278 | goto finish; | |
1279 | ||
1280 | log_parse_environment(); | |
1281 | ||
1282 | if (parse_argv(argc, argv) < 0) | |
1283 | goto finish; | |
1284 | ||
1285 | if (arg_action == ACTION_TEST && geteuid() == 0) { | |
1286 | log_error("Don't run test mode as root."); | |
1287 | goto finish; | |
1288 | } | |
1289 | ||
1290 | if (arg_running_as == MANAGER_SYSTEM && | |
1291 | arg_action == ACTION_RUN && | |
1292 | running_in_chroot() > 0) { | |
1293 | log_error("Cannot be run in a chroot() environment."); | |
1294 | goto finish; | |
1295 | } | |
1296 | ||
1297 | if (arg_action == ACTION_HELP) { | |
1298 | retval = help(); | |
1299 | goto finish; | |
1300 | } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) { | |
1301 | unit_dump_config_items(stdout); | |
1302 | retval = EXIT_SUCCESS; | |
1303 | goto finish; | |
1304 | } else if (arg_action == ACTION_DONE) { | |
1305 | retval = EXIT_SUCCESS; | |
1306 | goto finish; | |
1307 | } | |
1308 | ||
1309 | assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST); | |
1310 | ||
1311 | /* Close logging fds, in order not to confuse fdset below */ | |
1312 | log_close(); | |
1313 | ||
1314 | /* Remember open file descriptors for later deserialization */ | |
1315 | if (serialization) { | |
1316 | r = fdset_new_fill(&fds); | |
1317 | if (r < 0) { | |
1318 | log_error("Failed to allocate fd set: %s", strerror(-r)); | |
1319 | goto finish; | |
1320 | } | |
1321 | ||
1322 | assert_se(fdset_remove(fds, fileno(serialization)) >= 0); | |
1323 | } else | |
1324 | close_all_fds(NULL, 0); | |
1325 | ||
1326 | /* Set up PATH unless it is already set */ | |
1327 | setenv("PATH", | |
1328 | #ifdef HAVE_SPLIT_USR | |
1329 | "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", | |
1330 | #else | |
1331 | "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin", | |
1332 | #endif | |
1333 | arg_running_as == MANAGER_SYSTEM); | |
1334 | ||
1335 | if (arg_running_as == MANAGER_SYSTEM) { | |
1336 | /* Parse the data passed to us. We leave this | |
1337 | * variables set, but the manager later on will not | |
1338 | * pass them on to our children. */ | |
1339 | parse_initrd_timestamp(&initrd_timestamp); | |
1340 | ||
1341 | /* Unset some environment variables passed in from the | |
1342 | * kernel that don't really make sense for us. */ | |
1343 | unsetenv("HOME"); | |
1344 | unsetenv("TERM"); | |
1345 | ||
1346 | /* When we are invoked by a shell, these might be set, | |
1347 | * but make little sense to pass on */ | |
1348 | unsetenv("PWD"); | |
1349 | unsetenv("SHLVL"); | |
1350 | unsetenv("_"); | |
1351 | ||
1352 | /* All other variables are left as is, so that clients | |
1353 | * can still read them via /proc/1/environ */ | |
1354 | } | |
1355 | ||
1356 | /* Move out of the way, so that we won't block unmounts */ | |
1357 | assert_se(chdir("/") == 0); | |
1358 | ||
1359 | if (arg_running_as == MANAGER_SYSTEM) { | |
1360 | /* Become a session leader if we aren't one yet. */ | |
1361 | setsid(); | |
1362 | ||
1363 | /* Disable the umask logic */ | |
1364 | umask(0); | |
1365 | } | |
1366 | ||
1367 | /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */ | |
1368 | dbus_connection_set_change_sigpipe(FALSE); | |
1369 | ||
1370 | /* Reset the console, but only if this is really init and we | |
1371 | * are freshly booted */ | |
1372 | if (arg_running_as == MANAGER_SYSTEM && arg_action == ACTION_RUN) { | |
1373 | console_setup(getpid() == 1 && !is_reexec); | |
1374 | make_null_stdio(); | |
1375 | } | |
1376 | ||
1377 | /* Open the logging devices, if possible and necessary */ | |
1378 | log_open(); | |
1379 | ||
1380 | /* Make sure we leave a core dump without panicing the | |
1381 | * kernel. */ | |
1382 | if (getpid() == 1) | |
1383 | install_crash_handler(); | |
1384 | ||
1385 | if (geteuid() == 0 && !getenv("SYSTEMD_SKIP_API_MOUNTS")) { | |
1386 | r = mount_cgroup_controllers(arg_join_controllers); | |
1387 | if (r < 0) | |
1388 | goto finish; | |
1389 | } | |
1390 | ||
1391 | log_full(arg_running_as == MANAGER_SYSTEM ? LOG_INFO : LOG_DEBUG, | |
1392 | PACKAGE_STRING " running in %s mode. (" SYSTEMD_FEATURES "; " DISTRIBUTION ")", manager_running_as_to_string(arg_running_as)); | |
1393 | ||
1394 | if (arg_running_as == MANAGER_SYSTEM && !is_reexec) { | |
1395 | locale_setup(); | |
1396 | ||
1397 | if (arg_show_status || plymouth_running()) | |
1398 | status_welcome(); | |
1399 | ||
1400 | kmod_setup(); | |
1401 | hostname_setup(); | |
1402 | machine_id_setup(); | |
1403 | loopback_setup(); | |
1404 | ||
1405 | test_mtab(); | |
1406 | test_usr(); | |
1407 | test_cgroups(); | |
1408 | } | |
1409 | ||
1410 | if (arg_running_as == MANAGER_SYSTEM && arg_runtime_watchdog > 0) | |
1411 | watchdog_set_timeout(&arg_runtime_watchdog); | |
1412 | ||
1413 | r = manager_new(arg_running_as, &m); | |
1414 | if (r < 0) { | |
1415 | log_error("Failed to allocate manager object: %s", strerror(-r)); | |
1416 | goto finish; | |
1417 | } | |
1418 | ||
1419 | m->confirm_spawn = arg_confirm_spawn; | |
1420 | #ifdef HAVE_SYSV_COMPAT | |
1421 | m->sysv_console = arg_sysv_console; | |
1422 | #endif | |
1423 | m->mount_auto = arg_mount_auto; | |
1424 | m->swap_auto = arg_swap_auto; | |
1425 | m->default_std_output = arg_default_std_output; | |
1426 | m->default_std_error = arg_default_std_error; | |
1427 | m->runtime_watchdog = arg_runtime_watchdog; | |
1428 | m->shutdown_watchdog = arg_shutdown_watchdog; | |
1429 | ||
1430 | if (dual_timestamp_is_set(&initrd_timestamp)) | |
1431 | m->initrd_timestamp = initrd_timestamp; | |
1432 | ||
1433 | if (arg_default_controllers) | |
1434 | manager_set_default_controllers(m, arg_default_controllers); | |
1435 | ||
1436 | manager_set_show_status(m, arg_show_status); | |
1437 | ||
1438 | before_startup = now(CLOCK_MONOTONIC); | |
1439 | ||
1440 | r = manager_startup(m, serialization, fds); | |
1441 | if (r < 0) | |
1442 | log_error("Failed to fully start up daemon: %s", strerror(-r)); | |
1443 | ||
1444 | if (fds) { | |
1445 | /* This will close all file descriptors that were opened, but | |
1446 | * not claimed by any unit. */ | |
1447 | ||
1448 | fdset_free(fds); | |
1449 | fds = NULL; | |
1450 | } | |
1451 | ||
1452 | if (serialization) { | |
1453 | fclose(serialization); | |
1454 | serialization = NULL; | |
1455 | } else { | |
1456 | DBusError error; | |
1457 | Unit *target = NULL; | |
1458 | Job *default_unit_job; | |
1459 | ||
1460 | dbus_error_init(&error); | |
1461 | ||
1462 | log_debug("Activating default unit: %s", arg_default_unit); | |
1463 | ||
1464 | r = manager_load_unit(m, arg_default_unit, NULL, &error, &target); | |
1465 | if (r < 0) { | |
1466 | log_error("Failed to load default target: %s", bus_error(&error, r)); | |
1467 | dbus_error_free(&error); | |
1468 | } else if (target->load_state == UNIT_ERROR) | |
1469 | log_error("Failed to load default target: %s", strerror(-target->load_error)); | |
1470 | else if (target->load_state == UNIT_MASKED) | |
1471 | log_error("Default target masked."); | |
1472 | ||
1473 | if (!target || target->load_state != UNIT_LOADED) { | |
1474 | log_info("Trying to load rescue target..."); | |
1475 | ||
1476 | r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &error, &target); | |
1477 | if (r < 0) { | |
1478 | log_error("Failed to load rescue target: %s", bus_error(&error, r)); | |
1479 | dbus_error_free(&error); | |
1480 | goto finish; | |
1481 | } else if (target->load_state == UNIT_ERROR) { | |
1482 | log_error("Failed to load rescue target: %s", strerror(-target->load_error)); | |
1483 | goto finish; | |
1484 | } else if (target->load_state == UNIT_MASKED) { | |
1485 | log_error("Rescue target masked."); | |
1486 | goto finish; | |
1487 | } | |
1488 | } | |
1489 | ||
1490 | assert(target->load_state == UNIT_LOADED); | |
1491 | ||
1492 | if (arg_action == ACTION_TEST) { | |
1493 | printf("-> By units:\n"); | |
1494 | manager_dump_units(m, stdout, "\t"); | |
1495 | } | |
1496 | ||
1497 | r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &error, &default_unit_job); | |
1498 | if (r < 0) { | |
1499 | log_error("Failed to start default target: %s", bus_error(&error, r)); | |
1500 | dbus_error_free(&error); | |
1501 | goto finish; | |
1502 | } | |
1503 | m->default_unit_job_id = default_unit_job->id; | |
1504 | ||
1505 | after_startup = now(CLOCK_MONOTONIC); | |
1506 | log_full(arg_action == ACTION_TEST ? LOG_INFO : LOG_DEBUG, | |
1507 | "Loaded units and determined initial transaction in %s.", | |
1508 | format_timespan(timespan, sizeof(timespan), after_startup - before_startup)); | |
1509 | ||
1510 | if (arg_action == ACTION_TEST) { | |
1511 | printf("-> By jobs:\n"); | |
1512 | manager_dump_jobs(m, stdout, "\t"); | |
1513 | retval = EXIT_SUCCESS; | |
1514 | goto finish; | |
1515 | } | |
1516 | } | |
1517 | ||
1518 | for (;;) { | |
1519 | r = manager_loop(m); | |
1520 | if (r < 0) { | |
1521 | log_error("Failed to run mainloop: %s", strerror(-r)); | |
1522 | goto finish; | |
1523 | } | |
1524 | ||
1525 | switch (m->exit_code) { | |
1526 | ||
1527 | case MANAGER_EXIT: | |
1528 | retval = EXIT_SUCCESS; | |
1529 | log_debug("Exit."); | |
1530 | goto finish; | |
1531 | ||
1532 | case MANAGER_RELOAD: | |
1533 | log_info("Reloading."); | |
1534 | r = manager_reload(m); | |
1535 | if (r < 0) | |
1536 | log_error("Failed to reload: %s", strerror(-r)); | |
1537 | break; | |
1538 | ||
1539 | case MANAGER_REEXECUTE: | |
1540 | if (prepare_reexecute(m, &serialization, &fds) < 0) | |
1541 | goto finish; | |
1542 | ||
1543 | reexecute = true; | |
1544 | log_notice("Reexecuting."); | |
1545 | goto finish; | |
1546 | ||
1547 | case MANAGER_REBOOT: | |
1548 | case MANAGER_POWEROFF: | |
1549 | case MANAGER_HALT: | |
1550 | case MANAGER_KEXEC: { | |
1551 | static const char * const table[_MANAGER_EXIT_CODE_MAX] = { | |
1552 | [MANAGER_REBOOT] = "reboot", | |
1553 | [MANAGER_POWEROFF] = "poweroff", | |
1554 | [MANAGER_HALT] = "halt", | |
1555 | [MANAGER_KEXEC] = "kexec" | |
1556 | }; | |
1557 | ||
1558 | assert_se(shutdown_verb = table[m->exit_code]); | |
1559 | arm_reboot_watchdog = m->exit_code == MANAGER_REBOOT; | |
1560 | ||
1561 | log_notice("Shutting down."); | |
1562 | goto finish; | |
1563 | } | |
1564 | ||
1565 | default: | |
1566 | assert_not_reached("Unknown exit code."); | |
1567 | } | |
1568 | } | |
1569 | ||
1570 | finish: | |
1571 | if (m) | |
1572 | manager_free(m); | |
1573 | ||
1574 | free(arg_default_unit); | |
1575 | strv_free(arg_default_controllers); | |
1576 | free_join_controllers(); | |
1577 | ||
1578 | dbus_shutdown(); | |
1579 | ||
1580 | label_finish(); | |
1581 | ||
1582 | if (reexecute) { | |
1583 | const char *args[15]; | |
1584 | unsigned i = 0; | |
1585 | char sfd[16]; | |
1586 | ||
1587 | assert(serialization); | |
1588 | assert(fds); | |
1589 | ||
1590 | args[i++] = SYSTEMD_BINARY_PATH; | |
1591 | ||
1592 | args[i++] = "--log-level"; | |
1593 | args[i++] = log_level_to_string(log_get_max_level()); | |
1594 | ||
1595 | args[i++] = "--log-target"; | |
1596 | args[i++] = log_target_to_string(log_get_target()); | |
1597 | ||
1598 | if (arg_running_as == MANAGER_SYSTEM) | |
1599 | args[i++] = "--system"; | |
1600 | else | |
1601 | args[i++] = "--user"; | |
1602 | ||
1603 | if (arg_dump_core) | |
1604 | args[i++] = "--dump-core"; | |
1605 | ||
1606 | if (arg_crash_shell) | |
1607 | args[i++] = "--crash-shell"; | |
1608 | ||
1609 | if (arg_confirm_spawn) | |
1610 | args[i++] = "--confirm-spawn"; | |
1611 | ||
1612 | if (arg_show_status) | |
1613 | args[i++] = "--show-status=1"; | |
1614 | else | |
1615 | args[i++] = "--show-status=0"; | |
1616 | ||
1617 | #ifdef HAVE_SYSV_COMPAT | |
1618 | if (arg_sysv_console) | |
1619 | args[i++] = "--sysv-console=1"; | |
1620 | else | |
1621 | args[i++] = "--sysv-console=0"; | |
1622 | #endif | |
1623 | ||
1624 | snprintf(sfd, sizeof(sfd), "%i", fileno(serialization)); | |
1625 | char_array_0(sfd); | |
1626 | ||
1627 | args[i++] = "--deserialize"; | |
1628 | args[i++] = sfd; | |
1629 | ||
1630 | args[i++] = NULL; | |
1631 | ||
1632 | assert(i <= ELEMENTSOF(args)); | |
1633 | ||
1634 | /* Close and disarm the watchdog, so that the new | |
1635 | * instance can reinitialize it, but doesn't get | |
1636 | * rebooted while we do that */ | |
1637 | watchdog_close(true); | |
1638 | ||
1639 | execv(args[0], (char* const*) args); | |
1640 | ||
1641 | log_error("Failed to reexecute: %m"); | |
1642 | } | |
1643 | ||
1644 | if (serialization) | |
1645 | fclose(serialization); | |
1646 | ||
1647 | if (fds) | |
1648 | fdset_free(fds); | |
1649 | ||
1650 | if (shutdown_verb) { | |
1651 | char e[32]; | |
1652 | ||
1653 | const char * command_line[] = { | |
1654 | SYSTEMD_SHUTDOWN_BINARY_PATH, | |
1655 | shutdown_verb, | |
1656 | NULL | |
1657 | }; | |
1658 | const char * env_block[] = { | |
1659 | NULL, | |
1660 | NULL | |
1661 | }; | |
1662 | ||
1663 | if (arm_reboot_watchdog && arg_shutdown_watchdog > 0) { | |
1664 | /* If we reboot let's set the shutdown | |
1665 | * watchdog and tell the shutdown binary to | |
1666 | * repeatedly ping it */ | |
1667 | watchdog_set_timeout(&arg_shutdown_watchdog); | |
1668 | watchdog_close(false); | |
1669 | ||
1670 | /* Tell the binary how often to ping */ | |
1671 | snprintf(e, sizeof(e), "WATCHDOG_USEC=%llu", (unsigned long long) arg_shutdown_watchdog); | |
1672 | char_array_0(e); | |
1673 | env_block[0] = e; | |
1674 | } else | |
1675 | watchdog_close(true); | |
1676 | ||
1677 | execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, (char**) env_block); | |
1678 | log_error("Failed to execute shutdown binary, freezing: %m"); | |
1679 | } | |
1680 | ||
1681 | if (getpid() == 1) | |
1682 | freeze(); | |
1683 | ||
1684 | return retval; | |
1685 | } |