]>
Commit | Line | Data |
---|---|---|
60918275 LP |
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 LP |
34 | |
35 | #include "manager.h" | |
16354eff | 36 | #include "log.h" |
4ade7963 | 37 | #include "mount-setup.h" |
302e8c4c | 38 | #include "hostname-setup.h" |
af5bc85d | 39 | #include "loopback-setup.h" |
11c3a4ee | 40 | #include "kmod-setup.h" |
fa0f4d8a | 41 | #include "modprobe-setup.h" |
302e8c4c | 42 | #include "load-fragment.h" |
a16e1123 | 43 | #include "fdset.h" |
514f4ef5 | 44 | #include "special.h" |
487393e9 | 45 | #include "conf-parser.h" |
60918275 | 46 | |
f170852a LP |
47 | static enum { |
48 | ACTION_RUN, | |
e965d56d | 49 | ACTION_HELP, |
e537352b | 50 | ACTION_TEST, |
4288f619 LP |
51 | ACTION_DUMP_CONFIGURATION_ITEMS, |
52 | ACTION_DONE | |
fa0f4d8a | 53 | } arg_action = ACTION_RUN; |
f170852a | 54 | |
fa0f4d8a LP |
55 | static char *arg_default_unit = NULL; |
56 | static ManagerRunningAs arg_running_as = _MANAGER_RUNNING_AS_INVALID; | |
57 | ||
58 | static bool arg_dump_core = true; | |
59 | static bool arg_crash_shell = false; | |
60 | static int arg_crash_chvt = -1; | |
61 | static bool arg_confirm_spawn = false; | |
62 | static bool arg_nomodules = false; | |
9e58ff9c | 63 | static bool arg_show_status = true; |
4fc935ca | 64 | |
a16e1123 | 65 | static FILE* serialization = NULL; |
80876c20 | 66 | |
93a46b0b | 67 | _noreturn_ static void freeze(void) { |
97c4f35c LP |
68 | for (;;) |
69 | pause(); | |
70 | } | |
71 | ||
6f5e3f35 LP |
72 | static void nop_handler(int sig) { |
73 | } | |
74 | ||
93a46b0b | 75 | _noreturn_ static void crash(int sig) { |
97c4f35c | 76 | |
fa0f4d8a | 77 | if (!arg_dump_core) |
97c4f35c LP |
78 | log_error("Caught <%s>, not dumping core.", strsignal(sig)); |
79 | else { | |
6f5e3f35 | 80 | struct sigaction sa; |
97c4f35c LP |
81 | pid_t pid; |
82 | ||
6f5e3f35 LP |
83 | /* We want to wait for the core process, hence let's enable SIGCHLD */ |
84 | zero(sa); | |
85 | sa.sa_handler = nop_handler; | |
86 | sa.sa_flags = SA_NOCLDSTOP|SA_RESTART; | |
87 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); | |
88 | ||
97c4f35c | 89 | if ((pid = fork()) < 0) |
4fc935ca | 90 | log_error("Caught <%s>, cannot fork for core dump: %s", strsignal(sig), strerror(errno)); |
97c4f35c LP |
91 | |
92 | else if (pid == 0) { | |
97c4f35c LP |
93 | struct rlimit rl; |
94 | ||
95 | /* Enable default signal handler for core dump */ | |
96 | zero(sa); | |
97 | sa.sa_handler = SIG_DFL; | |
98 | assert_se(sigaction(sig, &sa, NULL) == 0); | |
99 | ||
100 | /* Don't limit the core dump size */ | |
101 | zero(rl); | |
102 | rl.rlim_cur = RLIM_INFINITY; | |
103 | rl.rlim_max = RLIM_INFINITY; | |
104 | setrlimit(RLIMIT_CORE, &rl); | |
105 | ||
106 | /* Just to be sure... */ | |
107 | assert_se(chdir("/") == 0); | |
108 | ||
109 | /* Raise the signal again */ | |
110 | raise(sig); | |
111 | ||
112 | assert_not_reached("We shouldn't be here..."); | |
113 | _exit(1); | |
4fc935ca LP |
114 | |
115 | } else { | |
116 | int status, r; | |
117 | ||
118 | /* Order things nicely. */ | |
119 | if ((r = waitpid(pid, &status, 0)) < 0) | |
120 | log_error("Caught <%s>, waitpid() failed: %s", strsignal(sig), strerror(errno)); | |
121 | else if (!WCOREDUMP(status)) | |
122 | log_error("Caught <%s>, core dump failed.", strsignal(sig)); | |
123 | else | |
bb00e604 | 124 | log_error("Caught <%s>, dumped core as pid %lu.", strsignal(sig), (unsigned long) pid); |
97c4f35c LP |
125 | } |
126 | } | |
127 | ||
fa0f4d8a LP |
128 | if (arg_crash_chvt) |
129 | chvt(arg_crash_chvt); | |
601f6a1e | 130 | |
fa0f4d8a | 131 | if (arg_crash_shell) { |
6f5e3f35 LP |
132 | struct sigaction sa; |
133 | pid_t pid; | |
8c43883a | 134 | |
4fc935ca LP |
135 | log_info("Executing crash shell in 10s..."); |
136 | sleep(10); | |
137 | ||
6f5e3f35 LP |
138 | /* Let the kernel reap children for us */ |
139 | zero(sa); | |
140 | sa.sa_handler = SIG_IGN; | |
141 | sa.sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART; | |
142 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); | |
8c43883a | 143 | |
6f5e3f35 LP |
144 | if ((pid = fork()) < 0) |
145 | log_error("Failed to fork off crash shell: %s", strerror(errno)); | |
146 | else if (pid == 0) { | |
843d2643 | 147 | int fd, r; |
ea5652c2 | 148 | |
21de3988 | 149 | if ((fd = acquire_terminal("/dev/console", false, true, true)) < 0) |
ea5652c2 | 150 | log_error("Failed to acquire terminal: %s", strerror(-fd)); |
5b2a0903 | 151 | else if ((r = make_stdio(fd)) < 0) |
843d2643 | 152 | log_error("Failed to duplicate terminal fd: %s", strerror(-r)); |
ea5652c2 | 153 | |
6f5e3f35 LP |
154 | execl("/bin/sh", "/bin/sh", NULL); |
155 | ||
156 | log_error("execl() failed: %s", strerror(errno)); | |
157 | _exit(1); | |
158 | } | |
c99b188e | 159 | |
bb00e604 | 160 | log_info("Successfully spawned crash shall as pid %lu.", (unsigned long) pid); |
4fc935ca LP |
161 | } |
162 | ||
163 | log_info("Freezing execution."); | |
97c4f35c LP |
164 | freeze(); |
165 | } | |
166 | ||
167 | static void install_crash_handler(void) { | |
168 | struct sigaction sa; | |
169 | ||
170 | zero(sa); | |
171 | ||
172 | sa.sa_handler = crash; | |
173 | sa.sa_flags = SA_NODEFER; | |
174 | ||
1b91d3e8 | 175 | sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1); |
97c4f35c | 176 | } |
f170852a | 177 | |
843d2643 LP |
178 | static int make_null_stdio(void) { |
179 | int null_fd, r; | |
80876c20 | 180 | |
c8513d54 | 181 | if ((null_fd = open("/dev/null", O_RDWR|O_NOCTTY)) < 0) { |
80876c20 | 182 | log_error("Failed to open /dev/null: %m"); |
843d2643 | 183 | return -errno; |
80876c20 LP |
184 | } |
185 | ||
843d2643 LP |
186 | if ((r = make_stdio(null_fd)) < 0) |
187 | log_warning("Failed to dup2() device: %s", strerror(-r)); | |
80876c20 | 188 | |
843d2643 LP |
189 | return r; |
190 | } | |
80876c20 | 191 | |
843d2643 LP |
192 | static int console_setup(bool do_reset) { |
193 | int tty_fd, r; | |
80876c20 | 194 | |
843d2643 LP |
195 | /* If we are init, we connect stdin/stdout/stderr to /dev/null |
196 | * and make sure we don't have a controlling tty. */ | |
80876c20 | 197 | |
843d2643 LP |
198 | release_terminal(); |
199 | ||
200 | if (!do_reset) | |
201 | return 0; | |
80876c20 | 202 | |
843d2643 LP |
203 | if ((tty_fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC)) < 0) { |
204 | log_error("Failed to open /dev/console: %s", strerror(-tty_fd)); | |
205 | return -tty_fd; | |
206 | } | |
80876c20 | 207 | |
843d2643 LP |
208 | if ((r = reset_terminal(tty_fd)) < 0) |
209 | log_error("Failed to reset /dev/console: %s", strerror(-r)); | |
210 | ||
211 | close_nointr_nofail(tty_fd); | |
80876c20 LP |
212 | return r; |
213 | } | |
214 | ||
f170852a LP |
215 | static int set_default_unit(const char *u) { |
216 | char *c; | |
217 | ||
218 | assert(u); | |
219 | ||
220 | if (!(c = strdup(u))) | |
221 | return -ENOMEM; | |
222 | ||
fa0f4d8a LP |
223 | free(arg_default_unit); |
224 | arg_default_unit = c; | |
f170852a LP |
225 | return 0; |
226 | } | |
227 | ||
228 | static int parse_proc_cmdline_word(const char *word) { | |
229 | ||
230 | static const char * const rlmap[] = { | |
514f4ef5 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, | |
f170852a LP |
236 | "2", SPECIAL_RUNLEVEL2_TARGET, |
237 | "3", SPECIAL_RUNLEVEL3_TARGET, | |
238 | "4", SPECIAL_RUNLEVEL4_TARGET, | |
239 | "5", SPECIAL_RUNLEVEL5_TARGET | |
240 | }; | |
9e58ff9c | 241 | bool ignore_quiet = false; |
f170852a | 242 | |
2f198e2f LP |
243 | if (startswith(word, "systemd.unit=")) |
244 | return set_default_unit(word + 13); | |
f170852a LP |
245 | |
246 | else if (startswith(word, "systemd.log_target=")) { | |
247 | ||
248 | if (log_set_target_from_string(word + 19) < 0) | |
249 | log_warning("Failed to parse log target %s. Ignoring.", word + 19); | |
250 | ||
251 | } else if (startswith(word, "systemd.log_level=")) { | |
252 | ||
253 | if (log_set_max_level_from_string(word + 18) < 0) | |
254 | log_warning("Failed to parse log level %s. Ignoring.", word + 18); | |
255 | ||
bbe63281 LP |
256 | } else if (startswith(word, "systemd.log_color=")) { |
257 | ||
258 | if (log_show_color_from_string(word + 18) < 0) | |
259 | log_warning("Failed to parse log color setting %s. Ignoring.", word + 18); | |
260 | ||
261 | } else if (startswith(word, "systemd.log_location=")) { | |
262 | ||
263 | if (log_show_location_from_string(word + 21) < 0) | |
264 | log_warning("Failed to parse log location setting %s. Ignoring.", word + 21); | |
265 | ||
4fc935ca LP |
266 | } else if (startswith(word, "systemd.dump_core=")) { |
267 | int r; | |
268 | ||
269 | if ((r = parse_boolean(word + 18)) < 0) | |
601f6a1e | 270 | log_warning("Failed to parse dump core switch %s, Ignoring.", word + 18); |
4fc935ca | 271 | else |
fa0f4d8a | 272 | arg_dump_core = r; |
4fc935ca LP |
273 | |
274 | } else if (startswith(word, "systemd.crash_shell=")) { | |
275 | int r; | |
276 | ||
277 | if ((r = parse_boolean(word + 20)) < 0) | |
601f6a1e | 278 | log_warning("Failed to parse crash shell switch %s, Ignoring.", word + 20); |
4fc935ca | 279 | else |
fa0f4d8a | 280 | arg_crash_shell = r; |
5e7ee61c LP |
281 | |
282 | } else if (startswith(word, "systemd.confirm_spawn=")) { | |
283 | int r; | |
284 | ||
285 | if ((r = parse_boolean(word + 22)) < 0) | |
286 | log_warning("Failed to parse confirm spawn switch %s, Ignoring.", word + 22); | |
287 | else | |
fa0f4d8a | 288 | arg_confirm_spawn = r; |
5e7ee61c | 289 | |
601f6a1e LP |
290 | } else if (startswith(word, "systemd.crash_chvt=")) { |
291 | int k; | |
292 | ||
293 | if (safe_atoi(word + 19, &k) < 0) | |
294 | log_warning("Failed to parse crash chvt switch %s, Ignoring.", word + 19); | |
295 | else | |
fa0f4d8a | 296 | arg_crash_chvt = k; |
601f6a1e | 297 | |
9e58ff9c LP |
298 | } else if (startswith(word, "systemd.show_status=")) { |
299 | int r; | |
300 | ||
301 | if ((r = parse_boolean(word + 20)) < 0) | |
302 | log_warning("Failed to parse show status switch %s, Ignoring.", word + 20); | |
303 | else { | |
304 | arg_show_status = r; | |
305 | ignore_quiet = true; | |
306 | } | |
307 | ||
4fc935ca LP |
308 | } else if (startswith(word, "systemd.")) { |
309 | ||
310 | log_warning("Unknown kernel switch %s. Ignoring.", word); | |
311 | ||
bbe63281 LP |
312 | log_info("Supported kernel switches:\n" |
313 | "systemd.unit=UNIT Default unit to start\n" | |
314 | "systemd.log_target=console|kmsg|syslog| Log target\n" | |
315 | " syslog-org-kmsg|null\n" | |
316 | "systemd.log_level=LEVEL Log level\n" | |
317 | "systemd.log_color=0|1 Highlight important log messages\n" | |
318 | "systemd.log_location=0|1 Include code location in log messages\n" | |
319 | "systemd.dump_core=0|1 Dump core on crash\n" | |
9e58ff9c | 320 | "systemd.crash_shell=0|1 Run shell on crash\n" |
bbe63281 | 321 | "systemd.crash_chvt=N Change to VT #N on crash\n" |
9e58ff9c LP |
322 | "systemd.confirm_spawn=0|1 Confirm every process spawn\n" |
323 | "systemd.show_status=0|1 Show status updates on the console during bootup\n"); | |
4fc935ca | 324 | |
fa0f4d8a LP |
325 | } else if (streq(word, "nomodules")) |
326 | arg_nomodules = true; | |
9e58ff9c LP |
327 | else if (streq(word, "quiet")) { |
328 | if (!ignore_quiet) | |
329 | arg_show_status = false; | |
330 | } else { | |
f170852a LP |
331 | unsigned i; |
332 | ||
333 | /* SysV compatibility */ | |
f170852a LP |
334 | for (i = 0; i < ELEMENTSOF(rlmap); i += 2) |
335 | if (streq(word, rlmap[i])) | |
336 | return set_default_unit(rlmap[i+1]); | |
337 | } | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
487393e9 LP |
342 | static int config_parse_level( |
343 | const char *filename, | |
344 | unsigned line, | |
345 | const char *section, | |
346 | const char *lvalue, | |
347 | const char *rvalue, | |
348 | void *data, | |
349 | void *userdata) { | |
350 | ||
351 | assert(filename); | |
352 | assert(lvalue); | |
353 | assert(rvalue); | |
354 | ||
355 | log_set_max_level_from_string(rvalue); | |
356 | return 0; | |
357 | } | |
358 | ||
359 | static int config_parse_target( | |
360 | const char *filename, | |
361 | unsigned line, | |
362 | const char *section, | |
363 | const char *lvalue, | |
364 | const char *rvalue, | |
365 | void *data, | |
366 | void *userdata) { | |
367 | ||
368 | assert(filename); | |
369 | assert(lvalue); | |
370 | assert(rvalue); | |
371 | ||
372 | log_set_target_from_string(rvalue); | |
373 | return 0; | |
374 | } | |
375 | ||
376 | static int config_parse_color( | |
377 | const char *filename, | |
378 | unsigned line, | |
379 | const char *section, | |
380 | const char *lvalue, | |
381 | const char *rvalue, | |
382 | void *data, | |
383 | void *userdata) { | |
384 | ||
385 | assert(filename); | |
386 | assert(lvalue); | |
387 | assert(rvalue); | |
388 | ||
389 | log_show_color_from_string(rvalue); | |
390 | return 0; | |
391 | } | |
392 | ||
393 | static int config_parse_location( | |
394 | const char *filename, | |
395 | unsigned line, | |
396 | const char *section, | |
397 | const char *lvalue, | |
398 | const char *rvalue, | |
399 | void *data, | |
400 | void *userdata) { | |
401 | ||
402 | assert(filename); | |
403 | assert(lvalue); | |
404 | assert(rvalue); | |
405 | ||
406 | log_show_location_from_string(rvalue); | |
407 | return 0; | |
408 | } | |
409 | ||
410 | static int config_parse_cpu_affinity( | |
411 | const char *filename, | |
412 | unsigned line, | |
413 | const char *section, | |
414 | const char *lvalue, | |
415 | const char *rvalue, | |
416 | void *data, | |
417 | void *userdata) { | |
418 | ||
419 | char *w; | |
420 | size_t l; | |
421 | char *state; | |
422 | cpu_set_t *c = NULL; | |
423 | unsigned ncpus = 0; | |
424 | ||
425 | assert(filename); | |
426 | assert(lvalue); | |
427 | assert(rvalue); | |
428 | ||
f60f22df | 429 | FOREACH_WORD_QUOTED(w, l, rvalue, state) { |
487393e9 LP |
430 | char *t; |
431 | int r; | |
432 | unsigned cpu; | |
433 | ||
434 | if (!(t = strndup(w, l))) | |
435 | return -ENOMEM; | |
436 | ||
437 | r = safe_atou(t, &cpu); | |
438 | free(t); | |
439 | ||
440 | if (!c) | |
441 | if (!(c = cpu_set_malloc(&ncpus))) | |
442 | return -ENOMEM; | |
443 | ||
444 | if (r < 0 || cpu >= ncpus) { | |
445 | log_error("[%s:%u] Failed to parse CPU affinity: %s", filename, line, rvalue); | |
446 | CPU_FREE(c); | |
447 | return -EBADMSG; | |
448 | } | |
449 | ||
450 | CPU_SET_S(cpu, CPU_ALLOC_SIZE(ncpus), c); | |
451 | } | |
452 | ||
453 | if (c) { | |
454 | if (sched_setaffinity(0, CPU_ALLOC_SIZE(ncpus), c) < 0) | |
455 | log_warning("Failed to set CPU affinity: %m"); | |
456 | ||
457 | CPU_FREE(c); | |
458 | } | |
459 | ||
460 | return 0; | |
461 | } | |
462 | ||
463 | static int parse_config_file(void) { | |
464 | ||
465 | const ConfigItem items[] = { | |
466 | { "LogLevel", config_parse_level, NULL, "Manager" }, | |
467 | { "LogTarget", config_parse_target, NULL, "Manager" }, | |
468 | { "LogColor", config_parse_color, NULL, "Manager" }, | |
469 | { "LogLocation", config_parse_location, NULL, "Manager" }, | |
470 | { "DumpCore", config_parse_bool, &arg_dump_core, "Manager" }, | |
471 | { "CrashShell", config_parse_bool, &arg_crash_shell, "Manager" }, | |
472 | { "ShowStatus", config_parse_bool, &arg_show_status, "Manager" }, | |
473 | { "CrashChVT", config_parse_int, &arg_crash_chvt, "Manager" }, | |
474 | { "CPUAffinity", config_parse_cpu_affinity, NULL, "Manager" }, | |
475 | { NULL, NULL, NULL, NULL } | |
476 | }; | |
477 | ||
478 | static const char * const sections[] = { | |
479 | "Manager", | |
480 | NULL | |
481 | }; | |
482 | ||
483 | FILE *f; | |
484 | const char *fn; | |
485 | int r; | |
486 | ||
487 | fn = arg_running_as == MANAGER_SYSTEM ? SYSTEM_CONFIG_FILE : SESSION_CONFIG_FILE; | |
488 | ||
489 | if (!(f = fopen(fn, "re"))) { | |
490 | if (errno == ENOENT) | |
491 | return 0; | |
492 | ||
493 | log_warning("Failed to open configuration file '%s': %m", fn); | |
494 | return 0; | |
495 | } | |
496 | ||
497 | if ((r = config_parse(fn, f, sections, items, false, NULL)) < 0) | |
498 | log_warning("Failed to parse configuration file: %s", strerror(-r)); | |
499 | ||
500 | fclose(f); | |
501 | ||
502 | return 0; | |
503 | } | |
504 | ||
f170852a LP |
505 | static int parse_proc_cmdline(void) { |
506 | char *line; | |
507 | int r; | |
508 | char *w; | |
509 | size_t l; | |
510 | char *state; | |
511 | ||
512 | if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) { | |
513 | log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(errno)); | |
514 | return 0; | |
515 | } | |
516 | ||
517 | FOREACH_WORD_QUOTED(w, l, line, state) { | |
518 | char *word; | |
519 | ||
520 | if (!(word = strndup(w, l))) { | |
521 | r = -ENOMEM; | |
522 | goto finish; | |
523 | } | |
524 | ||
525 | r = parse_proc_cmdline_word(word); | |
526 | free(word); | |
527 | ||
528 | if (r < 0) | |
529 | goto finish; | |
530 | } | |
531 | ||
532 | r = 0; | |
533 | ||
534 | finish: | |
535 | free(line); | |
536 | return r; | |
537 | } | |
538 | ||
539 | static int parse_argv(int argc, char *argv[]) { | |
540 | ||
541 | enum { | |
542 | ARG_LOG_LEVEL = 0x100, | |
543 | ARG_LOG_TARGET, | |
bbe63281 LP |
544 | ARG_LOG_COLOR, |
545 | ARG_LOG_LOCATION, | |
2f198e2f | 546 | ARG_UNIT, |
e965d56d | 547 | ARG_RUNNING_AS, |
e537352b | 548 | ARG_TEST, |
80876c20 | 549 | ARG_DUMP_CONFIGURATION_ITEMS, |
9e58ff9c LP |
550 | ARG_DUMP_CORE, |
551 | ARG_CRASH_SHELL, | |
a16e1123 | 552 | ARG_CONFIRM_SPAWN, |
9e58ff9c | 553 | ARG_SHOW_STATUS, |
4288f619 LP |
554 | ARG_DESERIALIZE, |
555 | ARG_INTROSPECT | |
f170852a LP |
556 | }; |
557 | ||
558 | static const struct option options[] = { | |
a16e1123 LP |
559 | { "log-level", required_argument, NULL, ARG_LOG_LEVEL }, |
560 | { "log-target", required_argument, NULL, ARG_LOG_TARGET }, | |
bbe63281 LP |
561 | { "log-color", optional_argument, NULL, ARG_LOG_COLOR }, |
562 | { "log-location", optional_argument, NULL, ARG_LOG_LOCATION }, | |
2f198e2f | 563 | { "unit", required_argument, NULL, ARG_UNIT }, |
a16e1123 LP |
564 | { "running-as", required_argument, NULL, ARG_RUNNING_AS }, |
565 | { "test", no_argument, NULL, ARG_TEST }, | |
566 | { "help", no_argument, NULL, 'h' }, | |
567 | { "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS }, | |
9e58ff9c LP |
568 | { "dump-core", no_argument, NULL, ARG_DUMP_CORE }, |
569 | { "crash-shell", no_argument, NULL, ARG_CRASH_SHELL }, | |
a16e1123 | 570 | { "confirm-spawn", no_argument, NULL, ARG_CONFIRM_SPAWN }, |
9e58ff9c | 571 | { "show-status", no_argument, NULL, ARG_SHOW_STATUS }, |
a16e1123 | 572 | { "deserialize", required_argument, NULL, ARG_DESERIALIZE }, |
4288f619 | 573 | { "introspect", optional_argument, NULL, ARG_INTROSPECT }, |
a16e1123 | 574 | { NULL, 0, NULL, 0 } |
f170852a LP |
575 | }; |
576 | ||
577 | int c, r; | |
578 | ||
579 | assert(argc >= 1); | |
580 | assert(argv); | |
581 | ||
582 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) | |
583 | ||
584 | switch (c) { | |
585 | ||
586 | case ARG_LOG_LEVEL: | |
587 | if ((r = log_set_max_level_from_string(optarg)) < 0) { | |
588 | log_error("Failed to parse log level %s.", optarg); | |
589 | return r; | |
590 | } | |
591 | ||
592 | break; | |
593 | ||
594 | case ARG_LOG_TARGET: | |
595 | ||
596 | if ((r = log_set_target_from_string(optarg)) < 0) { | |
597 | log_error("Failed to parse log target %s.", optarg); | |
598 | return r; | |
599 | } | |
600 | ||
601 | break; | |
602 | ||
bbe63281 LP |
603 | case ARG_LOG_COLOR: |
604 | ||
d0b170c8 LP |
605 | if (optarg) { |
606 | if ((r = log_show_color_from_string(optarg)) < 0) { | |
607 | log_error("Failed to parse log color setting %s.", optarg); | |
608 | return r; | |
609 | } | |
610 | } else | |
611 | log_show_color(true); | |
bbe63281 LP |
612 | |
613 | break; | |
614 | ||
615 | case ARG_LOG_LOCATION: | |
616 | ||
d0b170c8 LP |
617 | if (optarg) { |
618 | if ((r = log_show_location_from_string(optarg)) < 0) { | |
619 | log_error("Failed to parse log location setting %s.", optarg); | |
620 | return r; | |
621 | } | |
622 | } else | |
623 | log_show_location(true); | |
bbe63281 LP |
624 | |
625 | break; | |
626 | ||
2f198e2f | 627 | case ARG_UNIT: |
f170852a LP |
628 | |
629 | if ((r = set_default_unit(optarg)) < 0) { | |
630 | log_error("Failed to set default unit %s: %s", optarg, strerror(-r)); | |
631 | return r; | |
632 | } | |
633 | ||
634 | break; | |
635 | ||
a5dab5ce LP |
636 | case ARG_RUNNING_AS: { |
637 | ManagerRunningAs as; | |
638 | ||
639 | if ((as = manager_running_as_from_string(optarg)) < 0) { | |
640 | log_error("Failed to parse running as value %s", optarg); | |
641 | return -EINVAL; | |
642 | } | |
643 | ||
fa0f4d8a | 644 | arg_running_as = as; |
a5dab5ce LP |
645 | break; |
646 | } | |
647 | ||
e965d56d | 648 | case ARG_TEST: |
fa0f4d8a | 649 | arg_action = ACTION_TEST; |
e965d56d LP |
650 | break; |
651 | ||
e537352b | 652 | case ARG_DUMP_CONFIGURATION_ITEMS: |
fa0f4d8a | 653 | arg_action = ACTION_DUMP_CONFIGURATION_ITEMS; |
e537352b LP |
654 | break; |
655 | ||
9e58ff9c LP |
656 | case ARG_DUMP_CORE: |
657 | arg_dump_core = true; | |
658 | break; | |
659 | ||
660 | case ARG_CRASH_SHELL: | |
661 | arg_crash_shell = true; | |
662 | break; | |
663 | ||
80876c20 | 664 | case ARG_CONFIRM_SPAWN: |
fa0f4d8a | 665 | arg_confirm_spawn = true; |
80876c20 LP |
666 | break; |
667 | ||
9e58ff9c LP |
668 | case ARG_SHOW_STATUS: |
669 | arg_show_status = true; | |
670 | break; | |
671 | ||
a16e1123 LP |
672 | case ARG_DESERIALIZE: { |
673 | int fd; | |
674 | FILE *f; | |
675 | ||
676 | if ((r = safe_atoi(optarg, &fd)) < 0 || fd < 0) { | |
677 | log_error("Failed to parse deserialize option %s.", optarg); | |
678 | return r; | |
679 | } | |
680 | ||
681 | if (!(f = fdopen(fd, "r"))) { | |
682 | log_error("Failed to open serialization fd: %m"); | |
683 | return r; | |
684 | } | |
685 | ||
686 | if (serialization) | |
687 | fclose(serialization); | |
688 | ||
689 | serialization = f; | |
690 | ||
691 | break; | |
692 | } | |
693 | ||
4288f619 LP |
694 | case ARG_INTROSPECT: { |
695 | const char * const * i = NULL; | |
696 | ||
697 | for (i = bus_interface_table; *i; i += 2) | |
698 | if (!optarg || streq(i[0], optarg)) { | |
699 | fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE | |
700 | "<node>\n", stdout); | |
701 | fputs(i[1], stdout); | |
702 | fputs("</node>\n", stdout); | |
703 | ||
704 | if (optarg) | |
705 | break; | |
706 | } | |
707 | ||
708 | if (!i[0] && optarg) | |
709 | log_error("Unknown interface %s.", optarg); | |
710 | ||
fa0f4d8a | 711 | arg_action = ACTION_DONE; |
4288f619 LP |
712 | break; |
713 | } | |
714 | ||
f170852a | 715 | case 'h': |
fa0f4d8a | 716 | arg_action = ACTION_HELP; |
f170852a LP |
717 | break; |
718 | ||
719 | case '?': | |
720 | return -EINVAL; | |
721 | ||
722 | default: | |
723 | log_error("Unknown option code %c", c); | |
724 | return -EINVAL; | |
725 | } | |
726 | ||
51f0e189 LP |
727 | /* PID 1 will get the kernel arguments as parameters, which we |
728 | * ignore and unconditionally read from | |
729 | * /proc/cmdline. However, we need to ignore those arguments | |
730 | * here. */ | |
fa0f4d8a | 731 | if (arg_running_as != MANAGER_SYSTEM && optind < argc) { |
51f0e189 LP |
732 | log_error("Excess arguments."); |
733 | return -EINVAL; | |
734 | } | |
735 | ||
f170852a LP |
736 | return 0; |
737 | } | |
738 | ||
739 | static int help(void) { | |
740 | ||
2e33c433 | 741 | printf("%s [OPTIONS...]\n\n" |
bbe63281 | 742 | "Starts up and maintains the system or a session.\n\n" |
e537352b | 743 | " -h --help Show this help\n" |
e537352b | 744 | " --test Determine startup sequence, dump it and exit\n" |
80876c20 | 745 | " --dump-configuration-items Dump understood unit configuration items\n" |
bbe63281 | 746 | " --introspect[=INTERFACE] Extract D-Bus interface data\n" |
9e58ff9c LP |
747 | " --unit=UNIT Set default unit\n" |
748 | " --running-as=AS Set running as (system, session)\n" | |
749 | " --dump-core Dump core on crash\n" | |
750 | " --crash-shell Run shell on crash\n" | |
751 | " --confirm-spawn Ask for confirmation when spawning processes\n" | |
752 | " --show-status Show status updates on the console during bootup\n" | |
bbe63281 | 753 | " --log-target=TARGET Set log target (console, syslog, kmsg, syslog-or-kmsg, null)\n" |
9e58ff9c | 754 | " --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n" |
2218198b | 755 | " --log-color[=0|1] Highlight important log messages\n" |
bbe63281 | 756 | " --log-location[=0|1] Include code location in log messages\n", |
5b6319dc | 757 | program_invocation_short_name); |
f170852a LP |
758 | |
759 | return 0; | |
760 | } | |
761 | ||
a16e1123 LP |
762 | static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) { |
763 | FILE *f = NULL; | |
764 | FDSet *fds = NULL; | |
765 | int r; | |
766 | ||
767 | assert(m); | |
768 | assert(_f); | |
769 | assert(_fds); | |
770 | ||
771 | if ((r = manager_open_serialization(&f)) < 0) { | |
772 | log_error("Failed to create serialization faile: %s", strerror(-r)); | |
773 | goto fail; | |
774 | } | |
775 | ||
776 | if (!(fds = fdset_new())) { | |
777 | r = -ENOMEM; | |
778 | log_error("Failed to allocate fd set: %s", strerror(-r)); | |
779 | goto fail; | |
780 | } | |
781 | ||
782 | if ((r = manager_serialize(m, f, fds)) < 0) { | |
783 | log_error("Failed to serialize state: %s", strerror(-r)); | |
784 | goto fail; | |
785 | } | |
786 | ||
787 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
788 | log_error("Failed to rewind serialization fd: %m"); | |
789 | goto fail; | |
790 | } | |
791 | ||
792 | if ((r = fd_cloexec(fileno(f), false)) < 0) { | |
793 | log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r)); | |
794 | goto fail; | |
795 | } | |
796 | ||
797 | if ((r = fdset_cloexec(fds, false)) < 0) { | |
798 | log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r)); | |
799 | goto fail; | |
800 | } | |
801 | ||
802 | *_f = f; | |
803 | *_fds = fds; | |
804 | ||
805 | return 0; | |
806 | ||
807 | fail: | |
808 | fdset_free(fds); | |
809 | ||
810 | if (f) | |
811 | fclose(f); | |
812 | ||
813 | return r; | |
814 | } | |
815 | ||
60918275 LP |
816 | int main(int argc, char *argv[]) { |
817 | Manager *m = NULL; | |
87f0e418 | 818 | Unit *target = NULL; |
60918275 LP |
819 | Job *job = NULL; |
820 | int r, retval = 1; | |
a16e1123 LP |
821 | FDSet *fds = NULL; |
822 | bool reexecute = false; | |
27b14a22 | 823 | |
2cb1a60d LP |
824 | if (getpid() != 1 && strstr(program_invocation_short_name, "init")) { |
825 | /* This is compatbility support for SysV, where | |
826 | * calling init as a user is identical to telinit. */ | |
827 | ||
828 | errno = -ENOENT; | |
829 | execv(SYSTEMCTL_BINARY_PATH, argv); | |
830 | log_error("Failed to exec " SYSTEMCTL_BINARY_PATH ": %m"); | |
831 | return 1; | |
832 | } | |
833 | ||
bbe63281 LP |
834 | log_show_color(true); |
835 | log_show_location(false); | |
7c706717 | 836 | log_set_max_level(LOG_INFO); |
bbe63281 | 837 | |
843d2643 | 838 | if (getpid() == 1) { |
fa0f4d8a | 839 | arg_running_as = MANAGER_SYSTEM; |
843d2643 | 840 | log_set_target(LOG_TARGET_SYSLOG_OR_KMSG); |
bbe63281 | 841 | } else { |
fa0f4d8a | 842 | arg_running_as = MANAGER_SESSION; |
bbe63281 LP |
843 | log_set_target(LOG_TARGET_CONSOLE); |
844 | } | |
a5dab5ce | 845 | |
f170852a LP |
846 | if (set_default_unit(SPECIAL_DEFAULT_TARGET) < 0) |
847 | goto finish; | |
60918275 | 848 | |
f170852a LP |
849 | /* Mount /proc, /sys and friends, so that /proc/cmdline and |
850 | * /proc/$PID/fd is available. */ | |
8efe3c01 LP |
851 | if (geteuid() == 0) |
852 | if (mount_setup() < 0) | |
853 | goto finish; | |
4ade7963 LP |
854 | |
855 | /* Reset all signal handlers. */ | |
856 | assert_se(reset_all_signal_handlers() == 0); | |
857 | ||
078e4539 | 858 | /* If we are init, we can block sigkill. Yay. */ |
9a34ec5f | 859 | ignore_signals(SIGNALS_IGNORE, -1); |
078e4539 | 860 | |
487393e9 LP |
861 | if (parse_config_file() < 0) |
862 | goto finish; | |
863 | ||
fa0f4d8a | 864 | if (arg_running_as == MANAGER_SYSTEM) |
a5dab5ce LP |
865 | if (parse_proc_cmdline() < 0) |
866 | goto finish; | |
f170852a LP |
867 | |
868 | log_parse_environment(); | |
869 | ||
870 | if (parse_argv(argc, argv) < 0) | |
871 | goto finish; | |
872 | ||
fa0f4d8a | 873 | if (arg_action == ACTION_HELP) { |
f170852a LP |
874 | retval = help(); |
875 | goto finish; | |
fa0f4d8a | 876 | } else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) { |
e537352b LP |
877 | unit_dump_config_items(stdout); |
878 | retval = 0; | |
879 | goto finish; | |
fa0f4d8a | 880 | } else if (arg_action == ACTION_DONE) { |
4288f619 LP |
881 | retval = 0; |
882 | goto finish; | |
f170852a LP |
883 | } |
884 | ||
fa0f4d8a | 885 | assert_se(arg_action == ACTION_RUN || arg_action == ACTION_TEST); |
f170852a | 886 | |
a16e1123 LP |
887 | /* Remember open file descriptors for later deserialization */ |
888 | if (serialization) { | |
889 | if ((r = fdset_new_fill(&fds)) < 0) { | |
890 | log_error("Failed to allocate fd set: %s", strerror(-r)); | |
891 | goto finish; | |
892 | } | |
893 | ||
894 | assert_se(fdset_remove(fds, fileno(serialization)) >= 0); | |
895 | } else | |
896 | close_all_fds(NULL, 0); | |
897 | ||
09082a94 | 898 | /* Set up PATH unless it is already set */ |
e537352b LP |
899 | setenv("PATH", |
900 | "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", | |
fa0f4d8a | 901 | arg_running_as == MANAGER_SYSTEM); |
09082a94 | 902 | |
f170852a LP |
903 | /* Move out of the way, so that we won't block unmounts */ |
904 | assert_se(chdir("/") == 0); | |
905 | ||
fa0f4d8a | 906 | if (arg_running_as == MANAGER_SYSTEM) { |
80876c20 LP |
907 | /* Become a session leader if we aren't one yet. */ |
908 | setsid(); | |
4ade7963 | 909 | |
80876c20 LP |
910 | /* Disable the umask logic */ |
911 | umask(0); | |
912 | } | |
913 | ||
843d2643 LP |
914 | /* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */ |
915 | dbus_connection_set_change_sigpipe(FALSE); | |
916 | ||
2146621b LP |
917 | /* Reset the console, but only if this is really init and we |
918 | * are freshly booted */ | |
fa0f4d8a | 919 | if (arg_running_as == MANAGER_SYSTEM && arg_action == ACTION_RUN) { |
2146621b | 920 | console_setup(getpid() == 1 && !serialization); |
843d2643 LP |
921 | make_null_stdio(); |
922 | } | |
4ade7963 | 923 | |
18149b9f | 924 | /* Open the logging devices, if possible and necessary */ |
843d2643 | 925 | log_open(); |
4ade7963 | 926 | |
5373d602 LP |
927 | /* Make sure we leave a core dump without panicing the |
928 | * kernel. */ | |
4fc935ca LP |
929 | if (getpid() == 1) |
930 | install_crash_handler(); | |
97c4f35c | 931 | |
54165a39 | 932 | log_info(PACKAGE_STRING " running in %s mode.", manager_running_as_to_string(arg_running_as)); |
a5dab5ce | 933 | |
c846ff47 | 934 | if (arg_running_as == MANAGER_SYSTEM && !serialization) { |
455d8dc9 LP |
935 | if (arg_show_status) |
936 | status_welcome(); | |
fa0f4d8a | 937 | modprobe_setup(arg_nomodules); |
11c3a4ee | 938 | kmod_setup(); |
e537352b | 939 | hostname_setup(); |
af5bc85d LP |
940 | loopback_setup(); |
941 | } | |
302e8c4c | 942 | |
9e58ff9c | 943 | if ((r = manager_new(arg_running_as, &m)) < 0) { |
8e274523 | 944 | log_error("Failed to allocate manager object: %s", strerror(-r)); |
60918275 LP |
945 | goto finish; |
946 | } | |
947 | ||
9e58ff9c LP |
948 | m->confirm_spawn = arg_confirm_spawn; |
949 | m->show_status = arg_show_status; | |
950 | ||
a16e1123 | 951 | if ((r = manager_startup(m, serialization, fds)) < 0) |
6e2ef85b | 952 | log_error("Failed to fully start up daemon: %s", strerror(-r)); |
a16e1123 LP |
953 | |
954 | if (fds) { | |
955 | /* This will close all file descriptors that were opened, but | |
956 | * not claimed by any unit. */ | |
957 | ||
958 | fdset_free(fds); | |
959 | fds = NULL; | |
f50e0a01 LP |
960 | } |
961 | ||
a16e1123 LP |
962 | if (serialization) { |
963 | fclose(serialization); | |
964 | serialization = NULL; | |
965 | } else { | |
fa0f4d8a | 966 | log_debug("Activating default unit: %s", arg_default_unit); |
a16e1123 | 967 | |
fa0f4d8a | 968 | if ((r = manager_load_unit(m, arg_default_unit, NULL, &target)) < 0) { |
a16e1123 | 969 | log_error("Failed to load default target: %s", strerror(-r)); |
27b14a22 | 970 | |
a16e1123 LP |
971 | log_info("Trying to load rescue target..."); |
972 | if ((r = manager_load_unit(m, SPECIAL_RESCUE_TARGET, NULL, &target)) < 0) { | |
973 | log_error("Failed to load rescue target: %s", strerror(-r)); | |
974 | goto finish; | |
975 | } | |
976 | } | |
37d88da7 | 977 | |
fa0f4d8a | 978 | if (arg_action == ACTION_TEST) { |
40d50879 | 979 | printf("-> By units:\n"); |
a16e1123 LP |
980 | manager_dump_units(m, stdout, "\t"); |
981 | } | |
982 | ||
983 | if ((r = manager_add_job(m, JOB_START, target, JOB_REPLACE, false, &job)) < 0) { | |
984 | log_error("Failed to start default target: %s", strerror(-r)); | |
37d88da7 LP |
985 | goto finish; |
986 | } | |
60918275 | 987 | |
fa0f4d8a | 988 | if (arg_action == ACTION_TEST) { |
40d50879 | 989 | printf("-> By jobs:\n"); |
a16e1123 LP |
990 | manager_dump_jobs(m, stdout, "\t"); |
991 | retval = 0; | |
992 | goto finish; | |
993 | } | |
e965d56d | 994 | } |
d46de8a1 | 995 | |
a16e1123 LP |
996 | for (;;) { |
997 | if ((r = manager_loop(m)) < 0) { | |
998 | log_error("Failed to run mainloop: %s", strerror(-r)); | |
999 | goto finish; | |
1000 | } | |
11dd41ce | 1001 | |
a16e1123 | 1002 | switch (m->exit_code) { |
e965d56d | 1003 | |
a16e1123 LP |
1004 | case MANAGER_EXIT: |
1005 | retval = 0; | |
1006 | log_debug("Exit."); | |
1007 | goto finish; | |
e965d56d | 1008 | |
a16e1123 | 1009 | case MANAGER_RELOAD: |
e015090f | 1010 | log_info("Reloading."); |
a16e1123 LP |
1011 | if ((r = manager_reload(m)) < 0) |
1012 | log_error("Failed to reload: %s", strerror(-r)); | |
1013 | break; | |
cea8e32e | 1014 | |
a16e1123 | 1015 | case MANAGER_REEXECUTE: |
a16e1123 LP |
1016 | if (prepare_reexecute(m, &serialization, &fds) < 0) |
1017 | goto finish; | |
60918275 | 1018 | |
a16e1123 | 1019 | reexecute = true; |
e015090f | 1020 | log_notice("Reexecuting."); |
a16e1123 LP |
1021 | goto finish; |
1022 | ||
1023 | default: | |
1024 | assert_not_reached("Unknown exit code."); | |
1025 | } | |
1026 | } | |
f170852a | 1027 | |
60918275 LP |
1028 | finish: |
1029 | if (m) | |
1030 | manager_free(m); | |
1031 | ||
fa0f4d8a | 1032 | free(arg_default_unit); |
b9cd2ec1 | 1033 | |
ea430986 LP |
1034 | dbus_shutdown(); |
1035 | ||
a16e1123 LP |
1036 | if (reexecute) { |
1037 | const char *args[11]; | |
1038 | unsigned i = 0; | |
1039 | char sfd[16]; | |
1040 | ||
1041 | assert(serialization); | |
1042 | assert(fds); | |
1043 | ||
1044 | args[i++] = SYSTEMD_BINARY_PATH; | |
1045 | ||
1046 | args[i++] = "--log-level"; | |
1047 | args[i++] = log_level_to_string(log_get_max_level()); | |
1048 | ||
1049 | args[i++] = "--log-target"; | |
1050 | args[i++] = log_target_to_string(log_get_target()); | |
1051 | ||
1052 | args[i++] = "--running-as"; | |
fa0f4d8a | 1053 | args[i++] = manager_running_as_to_string(arg_running_as); |
a16e1123 LP |
1054 | |
1055 | snprintf(sfd, sizeof(sfd), "%i", fileno(serialization)); | |
1056 | char_array_0(sfd); | |
1057 | ||
1058 | args[i++] = "--deserialize"; | |
1059 | args[i++] = sfd; | |
1060 | ||
fa0f4d8a | 1061 | if (arg_confirm_spawn) |
a16e1123 LP |
1062 | args[i++] = "--confirm-spawn"; |
1063 | ||
1064 | args[i++] = NULL; | |
1065 | ||
1066 | assert(i <= ELEMENTSOF(args)); | |
1067 | ||
1068 | execv(args[0], (char* const*) args); | |
1069 | ||
1070 | log_error("Failed to reexecute: %m"); | |
1071 | } | |
1072 | ||
1073 | if (serialization) | |
1074 | fclose(serialization); | |
1075 | ||
1076 | if (fds) | |
1077 | fdset_free(fds); | |
1078 | ||
c3b3c274 LP |
1079 | if (getpid() == 1) |
1080 | freeze(); | |
1081 | ||
60918275 LP |
1082 | return retval; |
1083 | } |