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Commit | Line | Data |
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5cb5a6ff 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 | ||
5cb5a6ff | 22 | #include <errno.h> |
034c6ed7 | 23 | #include <signal.h> |
2c4104f0 LP |
24 | #include <dirent.h> |
25 | #include <unistd.h> | |
5cb5a6ff | 26 | |
87f0e418 | 27 | #include "unit.h" |
5cb5a6ff LP |
28 | #include "service.h" |
29 | #include "load-fragment.h" | |
30 | #include "load-dropin.h" | |
034c6ed7 | 31 | #include "log.h" |
2c4104f0 | 32 | #include "strv.h" |
9e2f7c11 | 33 | #include "unit-name.h" |
2c4104f0 LP |
34 | |
35 | #define COMMENTS "#;\n" | |
36 | #define NEWLINES "\n\r" | |
37 | #define LINE_MAX 4096 | |
034c6ed7 | 38 | |
23a177ef | 39 | static const char * const rcnd_table[] = { |
adcbe07c LP |
40 | "/rc0.d", SPECIAL_RUNLEVEL0_TARGET, |
41 | "/rc1.d", SPECIAL_RUNLEVEL1_TARGET, | |
42 | "/rc2.d", SPECIAL_RUNLEVEL2_TARGET, | |
43 | "/rc3.d", SPECIAL_RUNLEVEL3_TARGET, | |
44 | "/rc4.d", SPECIAL_RUNLEVEL4_TARGET, | |
45 | "/rc5.d", SPECIAL_RUNLEVEL5_TARGET, | |
46 | "/rc6.d", SPECIAL_RUNLEVEL6_TARGET, | |
47 | "/boot.d", SPECIAL_BASIC_TARGET | |
23a177ef LP |
48 | }; |
49 | ||
acbb0225 | 50 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 LP |
51 | [SERVICE_DEAD] = UNIT_INACTIVE, |
52 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
53 | [SERVICE_START] = UNIT_ACTIVATING, | |
54 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
55 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 56 | [SERVICE_EXITED] = UNIT_ACTIVE, |
87f0e418 LP |
57 | [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING, |
58 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
59 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, | |
60 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
61 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
62 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
63 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
64 | [SERVICE_MAINTAINANCE] = UNIT_INACTIVE, | |
65 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING, | |
034c6ed7 | 66 | }; |
5cb5a6ff | 67 | |
5e94833f LP |
68 | static void service_unwatch_control_pid(Service *s) { |
69 | assert(s); | |
70 | ||
71 | if (s->control_pid <= 0) | |
72 | return; | |
73 | ||
74 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
75 | s->control_pid = 0; | |
76 | } | |
77 | ||
78 | static void service_unwatch_main_pid(Service *s) { | |
79 | assert(s); | |
80 | ||
81 | if (s->main_pid <= 0) | |
82 | return; | |
83 | ||
84 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
85 | s->main_pid = 0; | |
86 | } | |
87 | ||
4f2d528d LP |
88 | static void service_close_socket_fd(Service *s) { |
89 | assert(s); | |
90 | ||
91 | if (s->socket_fd < 0) | |
92 | return; | |
93 | ||
94 | close_nointr_nofail(s->socket_fd); | |
95 | s->socket_fd = -1; | |
96 | } | |
97 | ||
87f0e418 LP |
98 | static void service_done(Unit *u) { |
99 | Service *s = SERVICE(u); | |
44d8db9e LP |
100 | |
101 | assert(s); | |
102 | ||
103 | free(s->pid_file); | |
104 | s->pid_file = NULL; | |
105 | ||
2c4104f0 LP |
106 | free(s->sysv_path); |
107 | s->sysv_path = NULL; | |
108 | ||
8309400a LP |
109 | free(s->sysv_runlevels); |
110 | s->sysv_runlevels = NULL; | |
111 | ||
44d8db9e | 112 | exec_context_done(&s->exec_context); |
e537352b | 113 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e LP |
114 | s->control_command = NULL; |
115 | ||
116 | /* This will leak a process, but at least no memory or any of | |
117 | * our resources */ | |
5e94833f LP |
118 | service_unwatch_main_pid(s); |
119 | service_unwatch_control_pid(s); | |
44d8db9e | 120 | |
4f2d528d LP |
121 | service_close_socket_fd(s); |
122 | ||
acbb0225 | 123 | unit_unwatch_timer(u, &s->timer_watch); |
44d8db9e LP |
124 | } |
125 | ||
2c4104f0 LP |
126 | static int sysv_translate_name(const char *name, char **_r) { |
127 | ||
128 | static const char * const table[] = { | |
129 | "$local_fs", SPECIAL_LOCAL_FS_TARGET, | |
130 | "$network", SPECIAL_NETWORK_TARGET, | |
131 | "$named", SPECIAL_NSS_LOOKUP_TARGET, | |
132 | "$portmap", SPECIAL_RPCBIND_TARGET, | |
133 | "$remote_fs", SPECIAL_REMOTE_FS_TARGET, | |
134 | "$syslog", SPECIAL_SYSLOG_TARGET, | |
135 | "$time", SPECIAL_RTC_SET_TARGET | |
136 | }; | |
137 | ||
138 | unsigned i; | |
139 | char *r; | |
140 | ||
141 | for (i = 0; i < ELEMENTSOF(table); i += 2) | |
142 | if (streq(table[i], name)) { | |
143 | if (!(r = strdup(table[i+1]))) | |
144 | return -ENOMEM; | |
145 | ||
146 | goto finish; | |
147 | } | |
148 | ||
149 | if (*name == '$') | |
150 | return 0; | |
151 | ||
152 | if (asprintf(&r, "%s.service", name) < 0) | |
153 | return -ENOMEM; | |
154 | ||
155 | finish: | |
156 | ||
157 | if (_r) | |
158 | *_r = r; | |
159 | ||
160 | return 1; | |
161 | } | |
162 | ||
163 | static int sysv_chkconfig_order(Service *s) { | |
164 | Meta *other; | |
165 | int r; | |
166 | ||
167 | assert(s); | |
168 | ||
169 | if (s->sysv_start_priority < 0) | |
170 | return 0; | |
171 | ||
23a177ef LP |
172 | /* For each pair of services where at least one lacks a LSB |
173 | * header, we use the start priority value to order things. */ | |
2c4104f0 LP |
174 | |
175 | LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) { | |
176 | Service *t; | |
177 | UnitDependency d; | |
178 | ||
179 | t = (Service*) other; | |
180 | ||
181 | if (s == t) | |
182 | continue; | |
183 | ||
184 | if (t->sysv_start_priority < 0) | |
185 | continue; | |
186 | ||
51a1a79d LP |
187 | /* If both units have modern headers we don't care |
188 | * about the priorities */ | |
189 | if ((!s->sysv_path || s->sysv_has_lsb) && | |
190 | (!t->sysv_path || t->sysv_has_lsb)) | |
23a177ef LP |
191 | continue; |
192 | ||
2c4104f0 LP |
193 | if (t->sysv_start_priority < s->sysv_start_priority) |
194 | d = UNIT_AFTER; | |
195 | else if (t->sysv_start_priority > s->sysv_start_priority) | |
196 | d = UNIT_BEFORE; | |
197 | else | |
198 | continue; | |
199 | ||
200 | /* FIXME: Maybe we should compare the name here lexicographically? */ | |
201 | ||
202 | if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t))) < 0) | |
203 | return r; | |
204 | } | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | static ExecCommand *exec_command_new(const char *path, const char *arg1) { | |
210 | ExecCommand *c; | |
211 | ||
212 | if (!(c = new0(ExecCommand, 1))) | |
213 | return NULL; | |
214 | ||
215 | if (!(c->path = strdup(path))) { | |
216 | free(c); | |
217 | return NULL; | |
218 | } | |
219 | ||
220 | if (!(c->argv = strv_new(path, arg1, NULL))) { | |
221 | free(c->path); | |
222 | free(c); | |
223 | return NULL; | |
224 | } | |
225 | ||
226 | return c; | |
227 | } | |
228 | ||
229 | static int sysv_exec_commands(Service *s) { | |
230 | ExecCommand *c; | |
231 | ||
232 | assert(s); | |
233 | assert(s->sysv_path); | |
234 | ||
235 | if (!(c = exec_command_new(s->sysv_path, "start"))) | |
236 | return -ENOMEM; | |
237 | exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c); | |
238 | ||
239 | if (!(c = exec_command_new(s->sysv_path, "stop"))) | |
240 | return -ENOMEM; | |
241 | exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c); | |
242 | ||
243 | if (!(c = exec_command_new(s->sysv_path, "reload"))) | |
244 | return -ENOMEM; | |
245 | exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c); | |
246 | ||
247 | return 0; | |
248 | } | |
249 | ||
23a177ef LP |
250 | static int priority_from_rcd(Service *s, const char *init_script) { |
251 | char **p; | |
252 | unsigned i; | |
253 | ||
061978fa | 254 | STRV_FOREACH(p, UNIT(s)->meta.manager->sysvrcnd_path) |
23a177ef LP |
255 | for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) { |
256 | char *path; | |
257 | DIR *d; | |
258 | struct dirent *de; | |
259 | ||
260 | if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0) | |
261 | return -ENOMEM; | |
262 | ||
263 | d = opendir(path); | |
264 | free(path); | |
265 | ||
266 | if (!d) { | |
267 | if (errno != ENOENT) | |
268 | log_warning("opendir() failed on %s: %s", path, strerror(errno)); | |
269 | ||
270 | continue; | |
271 | } | |
272 | ||
273 | while ((de = readdir(d))) { | |
274 | int a, b; | |
275 | ||
276 | if (ignore_file(de->d_name)) | |
277 | continue; | |
278 | ||
279 | if (de->d_name[0] != 'S') | |
280 | continue; | |
281 | ||
282 | if (strlen(de->d_name) < 4) | |
283 | continue; | |
284 | ||
285 | if (!streq(de->d_name + 3, init_script)) | |
286 | continue; | |
287 | ||
288 | /* Yay, we found it! Now decode the priority */ | |
289 | ||
290 | a = undecchar(de->d_name[1]); | |
291 | b = undecchar(de->d_name[2]); | |
292 | ||
293 | if (a < 0 || b < 0) | |
294 | continue; | |
295 | ||
296 | s->sysv_start_priority = a*10 + b; | |
297 | ||
9e2f7c11 | 298 | log_debug("Determined priority %i from link farm for %s", s->sysv_start_priority, UNIT(s)->meta.id); |
23a177ef LP |
299 | |
300 | closedir(d); | |
301 | return 0; | |
302 | } | |
303 | ||
304 | closedir(d); | |
305 | } | |
306 | ||
307 | return 0; | |
308 | } | |
309 | ||
e537352b | 310 | static int service_load_sysv_path(Service *s, const char *path) { |
2c4104f0 LP |
311 | FILE *f; |
312 | Unit *u; | |
313 | unsigned line = 0; | |
314 | int r; | |
315 | enum { | |
316 | NORMAL, | |
317 | DESCRIPTION, | |
318 | LSB, | |
319 | LSB_DESCRIPTION | |
320 | } state = NORMAL; | |
23a177ef LP |
321 | |
322 | assert(s); | |
323 | assert(path); | |
2c4104f0 LP |
324 | |
325 | u = UNIT(s); | |
326 | ||
327 | if (!(f = fopen(path, "re"))) { | |
328 | r = errno == ENOENT ? 0 : -errno; | |
329 | goto finish; | |
330 | } | |
331 | ||
332 | s->type = SERVICE_FORKING; | |
333 | s->restart = SERVICE_ONCE; | |
334 | ||
335 | free(s->sysv_path); | |
336 | if (!(s->sysv_path = strdup(path))) { | |
337 | r = -ENOMEM; | |
338 | goto finish; | |
339 | } | |
340 | ||
341 | while (!feof(f)) { | |
342 | char l[LINE_MAX], *t; | |
343 | ||
344 | if (!fgets(l, sizeof(l), f)) { | |
345 | if (feof(f)) | |
346 | break; | |
347 | ||
348 | r = -errno; | |
349 | log_error("Failed to read configuration file '%s': %s", path, strerror(-r)); | |
350 | goto finish; | |
351 | } | |
352 | ||
353 | line++; | |
354 | ||
355 | t = strstrip(l); | |
356 | if (*t != '#') | |
357 | continue; | |
358 | ||
359 | if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) { | |
360 | state = LSB; | |
23a177ef | 361 | s->sysv_has_lsb = true; |
2c4104f0 LP |
362 | continue; |
363 | } | |
364 | ||
365 | if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) { | |
366 | state = NORMAL; | |
367 | continue; | |
368 | } | |
369 | ||
370 | t++; | |
371 | t += strspn(t, WHITESPACE); | |
372 | ||
373 | if (state == NORMAL) { | |
374 | ||
375 | /* Try to parse Red Hat style chkconfig headers */ | |
376 | ||
377 | if (startswith(t, "chkconfig:")) { | |
378 | int start_priority; | |
8309400a | 379 | char runlevels[16], *k; |
2c4104f0 LP |
380 | |
381 | state = NORMAL; | |
382 | ||
8309400a LP |
383 | if (sscanf(t+10, "%15s %i %*i", |
384 | runlevels, | |
385 | &start_priority) != 2) { | |
2c4104f0 LP |
386 | |
387 | log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line); | |
388 | continue; | |
389 | } | |
390 | ||
8309400a | 391 | if (start_priority < 0 || start_priority > 99) |
2c4104f0 | 392 | log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line); |
8309400a LP |
393 | else |
394 | s->sysv_start_priority = start_priority; | |
395 | ||
396 | char_array_0(runlevels); | |
397 | k = delete_chars(runlevels, WHITESPACE "-"); | |
398 | ||
399 | if (k[0]) { | |
400 | char *d; | |
401 | ||
402 | if (!(d = strdup(k))) { | |
403 | r = -ENOMEM; | |
404 | goto finish; | |
405 | } | |
406 | ||
407 | free(s->sysv_runlevels); | |
408 | s->sysv_runlevels = d; | |
2c4104f0 LP |
409 | } |
410 | ||
2c4104f0 LP |
411 | |
412 | } else if (startswith(t, "description:")) { | |
413 | ||
414 | size_t k = strlen(t); | |
415 | char *d; | |
416 | ||
417 | if (t[k-1] == '\\') { | |
418 | state = DESCRIPTION; | |
419 | t[k-1] = 0; | |
420 | } | |
421 | ||
422 | if (!(d = strdup(strstrip(t+12)))) { | |
423 | r = -ENOMEM; | |
424 | goto finish; | |
425 | } | |
426 | ||
427 | free(u->meta.description); | |
428 | u->meta.description = d; | |
429 | ||
430 | } else if (startswith(t, "pidfile:")) { | |
431 | ||
432 | char *fn; | |
433 | ||
434 | state = NORMAL; | |
435 | ||
436 | fn = strstrip(t+8); | |
437 | if (!path_is_absolute(fn)) { | |
438 | log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line); | |
439 | continue; | |
440 | } | |
441 | ||
442 | if (!(fn = strdup(fn))) { | |
443 | r = -ENOMEM; | |
444 | goto finish; | |
445 | } | |
446 | ||
447 | free(s->pid_file); | |
448 | s->pid_file = fn; | |
449 | } | |
450 | ||
451 | } else if (state == DESCRIPTION) { | |
452 | ||
453 | /* Try to parse Red Hat style description | |
454 | * continuation */ | |
455 | ||
456 | size_t k = strlen(t); | |
457 | char *d; | |
458 | ||
459 | if (t[k-1] == '\\') | |
460 | t[k-1] = 0; | |
461 | else | |
462 | state = NORMAL; | |
463 | ||
464 | assert(u->meta.description); | |
465 | if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) { | |
466 | r = -ENOMEM; | |
467 | goto finish; | |
468 | } | |
469 | ||
470 | free(u->meta.description); | |
471 | u->meta.description = d; | |
472 | ||
473 | } else if (state == LSB || state == LSB_DESCRIPTION) { | |
474 | ||
475 | if (startswith(t, "Provides:")) { | |
476 | char *i, *w; | |
477 | size_t z; | |
478 | ||
479 | state = LSB; | |
480 | ||
481 | FOREACH_WORD(w, z, t+9, i) { | |
482 | char *n, *m; | |
483 | ||
484 | if (!(n = strndup(w, z))) { | |
485 | r = -ENOMEM; | |
486 | goto finish; | |
487 | } | |
488 | ||
489 | r = sysv_translate_name(n, &m); | |
490 | free(n); | |
491 | ||
492 | if (r < 0) | |
493 | goto finish; | |
494 | ||
495 | if (r == 0) | |
496 | continue; | |
497 | ||
bd77d0fc LP |
498 | if (unit_name_to_type(m) == UNIT_SERVICE) |
499 | r = unit_add_name(u, m); | |
500 | else { | |
9e2f7c11 LP |
501 | if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL)) >= 0) |
502 | r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL); | |
bd77d0fc LP |
503 | } |
504 | ||
2c4104f0 LP |
505 | free(m); |
506 | ||
507 | if (r < 0) | |
508 | goto finish; | |
509 | } | |
510 | ||
511 | } else if (startswith(t, "Required-Start:") || | |
512 | startswith(t, "Should-Start:")) { | |
513 | char *i, *w; | |
514 | size_t z; | |
515 | ||
516 | state = LSB; | |
517 | ||
518 | FOREACH_WORD(w, z, strchr(t, ':')+1, i) { | |
519 | char *n, *m; | |
520 | ||
521 | if (!(n = strndup(w, z))) { | |
522 | r = -ENOMEM; | |
523 | goto finish; | |
524 | } | |
525 | ||
526 | r = sysv_translate_name(n, &m); | |
527 | free(n); | |
528 | ||
529 | if (r < 0) | |
530 | goto finish; | |
531 | ||
532 | if (r == 0) | |
533 | continue; | |
534 | ||
9e2f7c11 | 535 | r = unit_add_dependency_by_name(u, UNIT_AFTER, m, NULL); |
2c4104f0 LP |
536 | free(m); |
537 | ||
538 | if (r < 0) | |
539 | goto finish; | |
540 | } | |
8309400a LP |
541 | } else if (startswith(t, "Default-Start:")) { |
542 | char *k, *d; | |
543 | ||
544 | state = LSB; | |
545 | ||
546 | k = delete_chars(t+14, WHITESPACE "-"); | |
547 | ||
548 | if (k[0] != 0) { | |
549 | if (!(d = strdup(k))) { | |
550 | r = -ENOMEM; | |
551 | goto finish; | |
552 | } | |
553 | ||
554 | free(s->sysv_runlevels); | |
555 | s->sysv_runlevels = d; | |
556 | } | |
2c4104f0 LP |
557 | |
558 | } else if (startswith(t, "Description:")) { | |
559 | char *d; | |
560 | ||
561 | state = LSB_DESCRIPTION; | |
562 | ||
563 | if (!(d = strdup(strstrip(t+12)))) { | |
564 | r = -ENOMEM; | |
565 | goto finish; | |
566 | } | |
567 | ||
568 | free(u->meta.description); | |
569 | u->meta.description = d; | |
570 | ||
8309400a LP |
571 | } else if (startswith(t, "Short-Description:") && |
572 | !u->meta.description) { | |
2c4104f0 LP |
573 | char *d; |
574 | ||
575 | /* We use the short description only | |
576 | * if no long description is set. */ | |
577 | ||
578 | state = LSB; | |
579 | ||
580 | if (!(d = strdup(strstrip(t+18)))) { | |
581 | r = -ENOMEM; | |
582 | goto finish; | |
583 | } | |
584 | ||
2c4104f0 LP |
585 | u->meta.description = d; |
586 | ||
587 | } else if (state == LSB_DESCRIPTION) { | |
588 | ||
589 | if (startswith(l, "#\t") || startswith(l, "# ")) { | |
590 | char *d; | |
591 | ||
592 | assert(u->meta.description); | |
593 | if (asprintf(&d, "%s %s", u->meta.description, t) < 0) { | |
594 | r = -ENOMEM; | |
595 | goto finish; | |
596 | } | |
597 | ||
598 | free(u->meta.description); | |
599 | u->meta.description = d; | |
600 | } else | |
601 | state = LSB; | |
602 | } | |
603 | } | |
604 | } | |
605 | ||
23a177ef LP |
606 | /* If init scripts have no LSB header, then we enforce the |
607 | * ordering via the chkconfig priorities. We try to determine | |
608 | * a priority for *all* init scripts here, since they are | |
609 | * needed as soon as at least one non-LSB script is used. */ | |
2c4104f0 | 610 | |
23a177ef | 611 | if (s->sysv_start_priority < 0) { |
9e2f7c11 | 612 | log_debug("%s has no chkconfig header, trying to determine SysV priority from link farm.", u->meta.id); |
23a177ef LP |
613 | |
614 | if ((r = priority_from_rcd(s, file_name_from_path(path))) < 0) | |
2c4104f0 LP |
615 | goto finish; |
616 | ||
23a177ef | 617 | if (s->sysv_start_priority < 0) |
9e2f7c11 | 618 | log_warning("%s has neither a chkconfig header nor a directory link, cannot order unit!", u->meta.id); |
23a177ef LP |
619 | } |
620 | ||
2c4104f0 LP |
621 | if ((r = sysv_exec_commands(s)) < 0) |
622 | goto finish; | |
623 | ||
0bc824be LP |
624 | if (!s->sysv_runlevels || chars_intersect("12345", s->sysv_runlevels)) { |
625 | /* If there a runlevels configured for this service | |
626 | * but none of the standard ones, then we assume this | |
627 | * is some special kind of service (which might be | |
628 | * needed for early boot) and don't create any links | |
629 | * to it. */ | |
630 | ||
9e2f7c11 LP |
631 | if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL)) < 0 || |
632 | (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL)) < 0) | |
0bc824be LP |
633 | goto finish; |
634 | } | |
0fd030be | 635 | |
80876c20 LP |
636 | /* Special setting for all SysV services */ |
637 | s->valid_no_process = true; | |
638 | ||
90a13a44 | 639 | /* Don't timeout special services during boot (like fsck) */ |
ba8c0bef | 640 | if (s->sysv_runlevels && !chars_intersect("12345", s->sysv_runlevels)) |
90a13a44 LP |
641 | s->timeout_usec = -1; |
642 | ||
e537352b | 643 | u->meta.load_state = UNIT_LOADED; |
23a177ef | 644 | r = 0; |
2c4104f0 LP |
645 | |
646 | finish: | |
647 | ||
648 | if (f) | |
649 | fclose(f); | |
650 | ||
651 | return r; | |
652 | } | |
653 | ||
e537352b | 654 | static int service_load_sysv_name(Service *s, const char *name) { |
2c4104f0 LP |
655 | char **p; |
656 | ||
657 | assert(s); | |
658 | assert(name); | |
659 | ||
660 | STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) { | |
661 | char *path; | |
662 | int r; | |
663 | ||
664 | if (asprintf(&path, "%s/%s", *p, name) < 0) | |
665 | return -ENOMEM; | |
666 | ||
667 | assert(endswith(path, ".service")); | |
668 | path[strlen(path)-8] = 0; | |
669 | ||
e537352b | 670 | r = service_load_sysv_path(s, path); |
2c4104f0 LP |
671 | free(path); |
672 | ||
23a177ef | 673 | if (r < 0) |
2c4104f0 | 674 | return r; |
23a177ef | 675 | |
e537352b | 676 | if ((UNIT(s)->meta.load_state != UNIT_STUB)) |
23a177ef | 677 | break; |
2c4104f0 LP |
678 | } |
679 | ||
680 | return 0; | |
681 | } | |
682 | ||
e537352b | 683 | static int service_load_sysv(Service *s) { |
2c4104f0 LP |
684 | const char *t; |
685 | Iterator i; | |
686 | int r; | |
687 | ||
5cb5a6ff LP |
688 | assert(s); |
689 | ||
690 | /* Load service data from SysV init scripts, preferably with | |
691 | * LSB headers ... */ | |
692 | ||
2c4104f0 LP |
693 | if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path)) |
694 | return 0; | |
695 | ||
9e2f7c11 | 696 | if ((t = UNIT(s)->meta.id)) |
e537352b | 697 | if ((r = service_load_sysv_name(s, t)) < 0) |
2c4104f0 LP |
698 | return r; |
699 | ||
e537352b | 700 | if (UNIT(s)->meta.load_state == UNIT_STUB) |
23a177ef | 701 | SET_FOREACH(t, UNIT(s)->meta.names, i) { |
9e2f7c11 | 702 | if (t == UNIT(s)->meta.id) |
e537352b LP |
703 | continue; |
704 | ||
705 | if ((r == service_load_sysv_name(s, t)) < 0) | |
23a177ef LP |
706 | return r; |
707 | ||
e537352b | 708 | if (UNIT(s)->meta.load_state != UNIT_STUB) |
23a177ef LP |
709 | break; |
710 | } | |
2c4104f0 LP |
711 | |
712 | return 0; | |
5cb5a6ff LP |
713 | } |
714 | ||
e537352b | 715 | static void service_init(Unit *u) { |
87f0e418 | 716 | Service *s = SERVICE(u); |
5cb5a6ff | 717 | |
e537352b LP |
718 | assert(u); |
719 | assert(u->meta.load_state == UNIT_STUB); | |
034c6ed7 LP |
720 | |
721 | s->type = 0; | |
722 | s->restart = 0; | |
723 | ||
724 | s->timeout_usec = DEFAULT_TIMEOUT_USEC; | |
725 | s->restart_usec = DEFAULT_RESTART_USEC; | |
726 | ||
727 | exec_context_init(&s->exec_context); | |
728 | ||
acbb0225 | 729 | s->timer_watch.type = WATCH_INVALID; |
034c6ed7 LP |
730 | |
731 | s->state = SERVICE_DEAD; | |
5cb5a6ff | 732 | |
2c4104f0 | 733 | s->sysv_start_priority = -1; |
81a2b7ce LP |
734 | s->permissions_start_only = false; |
735 | s->root_directory_start_only = false; | |
50159e6a LP |
736 | s->valid_no_process = false; |
737 | s->kill_mode = 0; | |
23a177ef | 738 | s->sysv_has_lsb = false; |
50159e6a LP |
739 | s->main_pid = s->control_pid = 0; |
740 | s->main_pid_known = false; | |
741 | s->failure = false; | |
23a177ef | 742 | |
4f2d528d LP |
743 | s->socket_fd = -1; |
744 | ||
1e2e8133 | 745 | RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5); |
e537352b LP |
746 | } |
747 | ||
243b1432 LP |
748 | static int service_verify(Service *s) { |
749 | assert(s); | |
750 | ||
751 | if (UNIT(s)->meta.load_state != UNIT_LOADED) | |
752 | return 0; | |
753 | ||
754 | if (!s->exec_command[SERVICE_EXEC_START]) { | |
9e2f7c11 | 755 | log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id); |
243b1432 LP |
756 | return -EINVAL; |
757 | } | |
758 | ||
759 | return 0; | |
760 | } | |
761 | ||
e537352b LP |
762 | static int service_load(Unit *u) { |
763 | int r; | |
764 | Service *s = SERVICE(u); | |
765 | ||
766 | assert(s); | |
1e2e8133 | 767 | |
5cb5a6ff | 768 | /* Load a .service file */ |
e537352b | 769 | if ((r = unit_load_fragment(u)) < 0) |
5cb5a6ff LP |
770 | return r; |
771 | ||
bd77d0fc | 772 | /* Load a classic init script as a fallback, if we couldn't find anything */ |
e537352b LP |
773 | if (u->meta.load_state == UNIT_STUB) |
774 | if ((r = service_load_sysv(s)) < 0) | |
23a177ef | 775 | return r; |
d46de8a1 | 776 | |
23a177ef | 777 | /* Still nothing found? Then let's give up */ |
e537352b | 778 | if (u->meta.load_state == UNIT_STUB) |
23a177ef | 779 | return -ENOENT; |
034c6ed7 | 780 | |
23a177ef LP |
781 | /* We were able to load something, then let's add in the |
782 | * dropin directories. */ | |
783 | if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) | |
8e274523 | 784 | return r; |
23a177ef LP |
785 | |
786 | /* This is a new unit? Then let's add in some extras */ | |
e537352b | 787 | if (u->meta.load_state == UNIT_LOADED) { |
23a177ef LP |
788 | if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0) |
789 | return r; | |
790 | ||
791 | if ((r = unit_add_default_cgroup(u)) < 0) | |
792 | return r; | |
793 | ||
794 | if ((r = sysv_chkconfig_order(s)) < 0) | |
795 | return r; | |
8e274523 LP |
796 | } |
797 | ||
243b1432 | 798 | return service_verify(s); |
034c6ed7 LP |
799 | } |
800 | ||
87f0e418 | 801 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
5cb5a6ff | 802 | |
5cb5a6ff | 803 | ServiceExecCommand c; |
87f0e418 | 804 | Service *s = SERVICE(u); |
47be870b LP |
805 | const char *prefix2; |
806 | char *p2; | |
5cb5a6ff LP |
807 | |
808 | assert(s); | |
809 | ||
47be870b LP |
810 | p2 = strappend(prefix, "\t"); |
811 | prefix2 = p2 ? p2 : prefix; | |
44d8db9e | 812 | |
5cb5a6ff | 813 | fprintf(f, |
81a2b7ce LP |
814 | "%sService State: %s\n" |
815 | "%sPermissionsStartOnly: %s\n" | |
8e274523 | 816 | "%sRootDirectoryStartOnly: %s\n" |
03d6ab85 | 817 | "%sValidNoProcess: %s\n" |
50159e6a | 818 | "%sKillMode: %s\n" |
03d6ab85 | 819 | "%sType: %s\n", |
81a2b7ce LP |
820 | prefix, service_state_to_string(s->state), |
821 | prefix, yes_no(s->permissions_start_only), | |
8e274523 | 822 | prefix, yes_no(s->root_directory_start_only), |
03d6ab85 | 823 | prefix, yes_no(s->valid_no_process), |
50159e6a | 824 | prefix, kill_mode_to_string(s->kill_mode), |
03d6ab85 | 825 | prefix, service_type_to_string(s->type)); |
5cb5a6ff | 826 | |
70123e68 LP |
827 | if (s->control_pid > 0) |
828 | fprintf(f, | |
829 | "%sControl PID: %llu\n", | |
830 | prefix, (unsigned long long) s->control_pid); | |
831 | ||
832 | if (s->main_pid > 0) | |
833 | fprintf(f, | |
834 | "%sMain PID: %llu\n", | |
835 | prefix, (unsigned long long) s->main_pid); | |
836 | ||
034c6ed7 LP |
837 | if (s->pid_file) |
838 | fprintf(f, | |
839 | "%sPIDFile: %s\n", | |
840 | prefix, s->pid_file); | |
841 | ||
5cb5a6ff LP |
842 | exec_context_dump(&s->exec_context, f, prefix); |
843 | ||
e537352b | 844 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 845 | |
44d8db9e LP |
846 | if (!s->exec_command[c]) |
847 | continue; | |
848 | ||
849 | fprintf(f, "%s→ %s:\n", | |
94f04347 | 850 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
851 | |
852 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 853 | } |
44d8db9e | 854 | |
2c4104f0 LP |
855 | if (s->sysv_path) |
856 | fprintf(f, | |
23a177ef LP |
857 | "%sSysV Init Script Path: %s\n" |
858 | "%sSysV Init Script has LSB Header: %s\n", | |
859 | prefix, s->sysv_path, | |
860 | prefix, yes_no(s->sysv_has_lsb)); | |
2c4104f0 LP |
861 | |
862 | if (s->sysv_start_priority >= 0) | |
863 | fprintf(f, | |
23a177ef | 864 | "%sSysVStartPriority: %i\n", |
2c4104f0 LP |
865 | prefix, s->sysv_start_priority); |
866 | ||
8309400a LP |
867 | if (s->sysv_runlevels) |
868 | fprintf(f, "%sSysVRunLevels: %s\n", | |
869 | prefix, s->sysv_runlevels); | |
23a177ef | 870 | |
47be870b | 871 | free(p2); |
5cb5a6ff LP |
872 | } |
873 | ||
034c6ed7 LP |
874 | static int service_load_pid_file(Service *s) { |
875 | char *k; | |
876 | unsigned long p; | |
877 | int r; | |
878 | ||
879 | assert(s); | |
880 | ||
881 | if (s->main_pid_known) | |
882 | return 0; | |
883 | ||
5e94833f LP |
884 | assert(s->main_pid <= 0); |
885 | ||
034c6ed7 LP |
886 | if (!s->pid_file) |
887 | return -ENOENT; | |
888 | ||
889 | if ((r = read_one_line_file(s->pid_file, &k)) < 0) | |
890 | return r; | |
891 | ||
892 | if ((r = safe_atolu(k, &p)) < 0) { | |
893 | free(k); | |
894 | return r; | |
895 | } | |
896 | ||
897 | if ((unsigned long) (pid_t) p != p) | |
898 | return -ERANGE; | |
899 | ||
b8c597d5 LP |
900 | if (kill((pid_t) p, 0) < 0 && errno != EPERM) { |
901 | log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.", | |
902 | (unsigned long long) p, s->pid_file); | |
903 | return -ESRCH; | |
904 | } | |
905 | ||
16f6025e LP |
906 | if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0) |
907 | /* FIXME: we need to do something here */ | |
908 | return r; | |
909 | ||
b8c597d5 | 910 | s->main_pid = (pid_t) p; |
034c6ed7 LP |
911 | s->main_pid_known = true; |
912 | ||
913 | return 0; | |
914 | } | |
915 | ||
3e33402a LP |
916 | static int service_get_sockets(Service *s, Set **_set) { |
917 | Set *set; | |
ceee3d82 LP |
918 | Iterator i; |
919 | char *t; | |
3e33402a | 920 | int r; |
ceee3d82 LP |
921 | |
922 | assert(s); | |
3e33402a LP |
923 | assert(_set); |
924 | ||
925 | /* Collects all Socket objects that belong to this | |
926 | * service. Note that a service might have multiple sockets | |
927 | * via multiple names. */ | |
928 | ||
929 | if (!(set = set_new(NULL, NULL))) | |
930 | return -ENOMEM; | |
ceee3d82 LP |
931 | |
932 | SET_FOREACH(t, UNIT(s)->meta.names, i) { | |
933 | char *k; | |
934 | Unit *p; | |
935 | ||
936 | /* Look for all socket objects that go by any of our | |
937 | * units and collect their fds */ | |
938 | ||
3e33402a LP |
939 | if (!(k = unit_name_change_suffix(t, ".socket"))) { |
940 | r = -ENOMEM; | |
941 | goto fail; | |
942 | } | |
ceee3d82 LP |
943 | |
944 | p = manager_get_unit(UNIT(s)->meta.manager, k); | |
945 | free(k); | |
946 | ||
3e33402a | 947 | if (!p) continue; |
ceee3d82 | 948 | |
3e33402a LP |
949 | if ((r = set_put(set, p)) < 0) |
950 | goto fail; | |
ceee3d82 LP |
951 | } |
952 | ||
3e33402a LP |
953 | *_set = set; |
954 | return 0; | |
955 | ||
956 | fail: | |
957 | set_free(set); | |
958 | return r; | |
959 | } | |
960 | ||
e537352b | 961 | static int service_notify_sockets_dead(Service *s) { |
3e33402a LP |
962 | Iterator i; |
963 | Set *set; | |
47be870b | 964 | Socket *sock; |
3e33402a LP |
965 | int r; |
966 | ||
967 | assert(s); | |
968 | ||
969 | /* Notifies all our sockets when we die */ | |
3e33402a LP |
970 | if ((r = service_get_sockets(s, &set)) < 0) |
971 | return r; | |
972 | ||
47be870b LP |
973 | SET_FOREACH(sock, set, i) |
974 | socket_notify_service_dead(sock); | |
3e33402a LP |
975 | |
976 | set_free(set); | |
977 | ||
ceee3d82 LP |
978 | return 0; |
979 | } | |
980 | ||
034c6ed7 LP |
981 | static void service_set_state(Service *s, ServiceState state) { |
982 | ServiceState old_state; | |
5cb5a6ff LP |
983 | assert(s); |
984 | ||
034c6ed7 | 985 | old_state = s->state; |
5cb5a6ff | 986 | s->state = state; |
034c6ed7 LP |
987 | |
988 | if (state != SERVICE_START_PRE && | |
989 | state != SERVICE_START && | |
990 | state != SERVICE_START_POST && | |
991 | state != SERVICE_RELOAD && | |
992 | state != SERVICE_STOP && | |
993 | state != SERVICE_STOP_SIGTERM && | |
994 | state != SERVICE_STOP_SIGKILL && | |
995 | state != SERVICE_STOP_POST && | |
996 | state != SERVICE_FINAL_SIGTERM && | |
997 | state != SERVICE_FINAL_SIGKILL && | |
998 | state != SERVICE_AUTO_RESTART) | |
acbb0225 | 999 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
034c6ed7 | 1000 | |
7d55e835 LP |
1001 | if (state != SERVICE_START && |
1002 | state != SERVICE_START_POST && | |
034c6ed7 LP |
1003 | state != SERVICE_RUNNING && |
1004 | state != SERVICE_RELOAD && | |
1005 | state != SERVICE_STOP && | |
1006 | state != SERVICE_STOP_SIGTERM && | |
1007 | state != SERVICE_STOP_SIGKILL) | |
5e94833f | 1008 | service_unwatch_main_pid(s); |
034c6ed7 LP |
1009 | |
1010 | if (state != SERVICE_START_PRE && | |
1011 | state != SERVICE_START && | |
1012 | state != SERVICE_START_POST && | |
1013 | state != SERVICE_RELOAD && | |
1014 | state != SERVICE_STOP && | |
1015 | state != SERVICE_STOP_SIGTERM && | |
1016 | state != SERVICE_STOP_SIGKILL && | |
1017 | state != SERVICE_STOP_POST && | |
1018 | state != SERVICE_FINAL_SIGTERM && | |
e537352b | 1019 | state != SERVICE_FINAL_SIGKILL) { |
5e94833f | 1020 | service_unwatch_control_pid(s); |
034c6ed7 | 1021 | s->control_command = NULL; |
e537352b | 1022 | } |
034c6ed7 | 1023 | |
ceee3d82 LP |
1024 | if (state == SERVICE_DEAD || |
1025 | state == SERVICE_STOP || | |
1026 | state == SERVICE_STOP_SIGTERM || | |
1027 | state == SERVICE_STOP_SIGKILL || | |
1028 | state == SERVICE_STOP_POST || | |
1029 | state == SERVICE_FINAL_SIGTERM || | |
1030 | state == SERVICE_FINAL_SIGKILL || | |
1031 | state == SERVICE_MAINTAINANCE || | |
1032 | state == SERVICE_AUTO_RESTART) | |
e537352b | 1033 | service_notify_sockets_dead(s); |
ceee3d82 | 1034 | |
4f2d528d LP |
1035 | if (state != SERVICE_START_PRE && |
1036 | state != SERVICE_START && | |
1037 | !(state == SERVICE_DEAD && UNIT(s)->meta.job)) | |
1038 | service_close_socket_fd(s); | |
1039 | ||
e537352b | 1040 | if (old_state != state) |
9e2f7c11 | 1041 | log_debug("%s changed %s → %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state)); |
acbb0225 LP |
1042 | |
1043 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]); | |
034c6ed7 LP |
1044 | } |
1045 | ||
44d8db9e LP |
1046 | static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) { |
1047 | Iterator i; | |
1048 | int r; | |
1049 | int *rfds = NULL; | |
1050 | unsigned rn_fds = 0; | |
3e33402a | 1051 | Set *set; |
47be870b | 1052 | Socket *sock; |
44d8db9e LP |
1053 | |
1054 | assert(s); | |
1055 | assert(fds); | |
1056 | assert(n_fds); | |
1057 | ||
3e33402a LP |
1058 | if ((r = service_get_sockets(s, &set)) < 0) |
1059 | return r; | |
1060 | ||
47be870b | 1061 | SET_FOREACH(sock, set, i) { |
44d8db9e LP |
1062 | int *cfds; |
1063 | unsigned cn_fds; | |
1064 | ||
47be870b | 1065 | if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0) |
44d8db9e LP |
1066 | goto fail; |
1067 | ||
1068 | if (!cfds) | |
1069 | continue; | |
1070 | ||
1071 | if (!rfds) { | |
1072 | rfds = cfds; | |
1073 | rn_fds = cn_fds; | |
1074 | } else { | |
1075 | int *t; | |
1076 | ||
1077 | if (!(t = new(int, rn_fds+cn_fds))) { | |
1078 | free(cfds); | |
1079 | r = -ENOMEM; | |
1080 | goto fail; | |
1081 | } | |
1082 | ||
1083 | memcpy(t, rfds, rn_fds); | |
1084 | memcpy(t+rn_fds, cfds, cn_fds); | |
1085 | free(rfds); | |
1086 | free(cfds); | |
1087 | ||
1088 | rfds = t; | |
1089 | rn_fds = rn_fds+cn_fds; | |
1090 | } | |
1091 | } | |
1092 | ||
1093 | *fds = rfds; | |
1094 | *n_fds = rn_fds; | |
3e33402a LP |
1095 | |
1096 | set_free(set); | |
1097 | ||
44d8db9e LP |
1098 | return 0; |
1099 | ||
1100 | fail: | |
3e33402a | 1101 | set_free(set); |
44d8db9e | 1102 | free(rfds); |
3e33402a | 1103 | |
44d8db9e LP |
1104 | return r; |
1105 | } | |
1106 | ||
81a2b7ce LP |
1107 | static int service_spawn( |
1108 | Service *s, | |
1109 | ExecCommand *c, | |
1110 | bool timeout, | |
1111 | bool pass_fds, | |
1112 | bool apply_permissions, | |
1113 | bool apply_chroot, | |
1114 | pid_t *_pid) { | |
1115 | ||
034c6ed7 LP |
1116 | pid_t pid; |
1117 | int r; | |
44d8db9e LP |
1118 | int *fds = NULL; |
1119 | unsigned n_fds = 0; | |
9e2f7c11 | 1120 | char **argv; |
034c6ed7 LP |
1121 | |
1122 | assert(s); | |
1123 | assert(c); | |
1124 | assert(_pid); | |
1125 | ||
4f2d528d LP |
1126 | if (pass_fds) { |
1127 | if (s->socket_fd >= 0) { | |
1128 | fds = &s->socket_fd; | |
1129 | n_fds = 1; | |
1130 | } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0) | |
44d8db9e | 1131 | goto fail; |
4f2d528d | 1132 | } |
44d8db9e | 1133 | |
034c6ed7 | 1134 | if (timeout) { |
acbb0225 | 1135 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) |
034c6ed7 LP |
1136 | goto fail; |
1137 | } else | |
acbb0225 | 1138 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
034c6ed7 | 1139 | |
9e2f7c11 LP |
1140 | if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) { |
1141 | r = -ENOMEM; | |
1142 | goto fail; | |
1143 | } | |
1144 | ||
1145 | r = exec_spawn(c, | |
1146 | argv, | |
1147 | &s->exec_context, | |
1148 | fds, n_fds, | |
1149 | apply_permissions, | |
1150 | apply_chroot, | |
1151 | UNIT(s)->meta.manager->confirm_spawn, | |
1152 | UNIT(s)->meta.cgroup_bondings, | |
1153 | &pid); | |
1154 | ||
1155 | strv_free(argv); | |
1156 | if (r < 0) | |
034c6ed7 LP |
1157 | goto fail; |
1158 | ||
4f2d528d LP |
1159 | if (fds) { |
1160 | if (s->socket_fd >= 0) | |
1161 | service_close_socket_fd(s); | |
1162 | else | |
1163 | free(fds); | |
1164 | } | |
1165 | ||
87f0e418 | 1166 | if ((r = unit_watch_pid(UNIT(s), pid)) < 0) |
034c6ed7 LP |
1167 | /* FIXME: we need to do something here */ |
1168 | goto fail; | |
1169 | ||
1170 | *_pid = pid; | |
1171 | ||
5cb5a6ff | 1172 | return 0; |
034c6ed7 LP |
1173 | |
1174 | fail: | |
44d8db9e LP |
1175 | free(fds); |
1176 | ||
034c6ed7 | 1177 | if (timeout) |
acbb0225 | 1178 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
034c6ed7 LP |
1179 | |
1180 | return r; | |
1181 | } | |
1182 | ||
80876c20 LP |
1183 | static int main_pid_good(Service *s) { |
1184 | assert(s); | |
1185 | ||
1186 | /* Returns 0 if the pid is dead, 1 if it is good, -1 if we | |
1187 | * don't know */ | |
1188 | ||
1189 | /* If we know the pid file, then lets just check if it is | |
1190 | * still valid */ | |
1191 | if (s->main_pid_known) | |
1192 | return s->main_pid > 0; | |
1193 | ||
1194 | /* We don't know the pid */ | |
1195 | return -EAGAIN; | |
1196 | } | |
1197 | ||
1198 | static int control_pid_good(Service *s) { | |
1199 | assert(s); | |
1200 | ||
1201 | return s->control_pid > 0; | |
1202 | } | |
1203 | ||
1204 | static int cgroup_good(Service *s) { | |
1205 | int r; | |
1206 | ||
1207 | assert(s); | |
1208 | ||
1209 | if (s->valid_no_process) | |
1210 | return -EAGAIN; | |
1211 | ||
1212 | if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0) | |
1213 | return r; | |
1214 | ||
1215 | return !r; | |
1216 | } | |
1217 | ||
034c6ed7 LP |
1218 | static void service_enter_dead(Service *s, bool success, bool allow_restart) { |
1219 | int r; | |
1220 | assert(s); | |
1221 | ||
1222 | if (!success) | |
1223 | s->failure = true; | |
1224 | ||
1225 | if (allow_restart && | |
1226 | (s->restart == SERVICE_RESTART_ALWAYS || | |
1227 | (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) { | |
1228 | ||
acbb0225 | 1229 | if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0) |
034c6ed7 LP |
1230 | goto fail; |
1231 | ||
1232 | service_set_state(s, SERVICE_AUTO_RESTART); | |
1233 | } else | |
1234 | service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD); | |
1235 | ||
1236 | return; | |
1237 | ||
1238 | fail: | |
9e2f7c11 | 1239 | log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r)); |
034c6ed7 LP |
1240 | service_enter_dead(s, false, false); |
1241 | } | |
1242 | ||
1243 | static void service_enter_signal(Service *s, ServiceState state, bool success); | |
1244 | ||
1245 | static void service_enter_stop_post(Service *s, bool success) { | |
1246 | int r; | |
1247 | assert(s); | |
1248 | ||
1249 | if (!success) | |
1250 | s->failure = true; | |
1251 | ||
5e94833f LP |
1252 | service_unwatch_control_pid(s); |
1253 | ||
80876c20 | 1254 | if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) { |
81a2b7ce LP |
1255 | if ((r = service_spawn(s, |
1256 | s->control_command, | |
1257 | true, | |
1258 | false, | |
1259 | !s->permissions_start_only, | |
1260 | !s->root_directory_start_only, | |
1261 | &s->control_pid)) < 0) | |
034c6ed7 LP |
1262 | goto fail; |
1263 | ||
d6ea93e3 | 1264 | |
80876c20 LP |
1265 | service_set_state(s, SERVICE_STOP_POST); |
1266 | } else | |
1267 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, true); | |
034c6ed7 LP |
1268 | |
1269 | return; | |
1270 | ||
1271 | fail: | |
9e2f7c11 | 1272 | log_warning("%s failed to run stop-post executable: %s", UNIT(s)->meta.id, strerror(-r)); |
034c6ed7 LP |
1273 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
1274 | } | |
1275 | ||
1276 | static void service_enter_signal(Service *s, ServiceState state, bool success) { | |
1277 | int r; | |
1278 | bool sent = false; | |
1279 | ||
1280 | assert(s); | |
1281 | ||
1282 | if (!success) | |
1283 | s->failure = true; | |
1284 | ||
80876c20 LP |
1285 | if (s->kill_mode != KILL_NONE) { |
1286 | int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL; | |
034c6ed7 | 1287 | |
50159e6a | 1288 | if (s->kill_mode == KILL_CONTROL_GROUP) { |
034c6ed7 | 1289 | |
50159e6a LP |
1290 | if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) { |
1291 | if (r != -EAGAIN && r != -ESRCH) | |
1292 | goto fail; | |
1293 | } else | |
034c6ed7 LP |
1294 | sent = true; |
1295 | } | |
1296 | ||
50159e6a LP |
1297 | if (!sent) { |
1298 | r = 0; | |
80876c20 | 1299 | |
50159e6a LP |
1300 | if (s->main_pid > 0) { |
1301 | if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH) | |
1302 | r = -errno; | |
1303 | else | |
1304 | sent = true; | |
1305 | } | |
1306 | ||
1307 | if (s->control_pid > 0) { | |
1308 | if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH) | |
1309 | r = -errno; | |
1310 | else | |
1311 | sent = true; | |
1312 | } | |
1313 | ||
1314 | if (r < 0) | |
1315 | goto fail; | |
1316 | } | |
d6ea93e3 | 1317 | } |
034c6ed7 | 1318 | |
80876c20 LP |
1319 | if (sent) { |
1320 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) | |
1321 | goto fail; | |
d6ea93e3 | 1322 | |
80876c20 LP |
1323 | service_set_state(s, state); |
1324 | } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) | |
1325 | service_enter_stop_post(s, true); | |
1326 | else | |
034c6ed7 LP |
1327 | service_enter_dead(s, true, true); |
1328 | ||
1329 | return; | |
1330 | ||
1331 | fail: | |
9e2f7c11 | 1332 | log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r)); |
034c6ed7 | 1333 | |
80876c20 | 1334 | if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) |
034c6ed7 LP |
1335 | service_enter_stop_post(s, false); |
1336 | else | |
1337 | service_enter_dead(s, false, true); | |
1338 | } | |
1339 | ||
1340 | static void service_enter_stop(Service *s, bool success) { | |
1341 | int r; | |
1342 | assert(s); | |
1343 | ||
1344 | if (!success) | |
1345 | s->failure = true; | |
1346 | ||
5e94833f LP |
1347 | service_unwatch_control_pid(s); |
1348 | ||
80876c20 | 1349 | if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) { |
81a2b7ce LP |
1350 | if ((r = service_spawn(s, |
1351 | s->control_command, | |
1352 | true, | |
1353 | false, | |
1354 | !s->permissions_start_only, | |
1355 | !s->root_directory_start_only, | |
1356 | &s->control_pid)) < 0) | |
034c6ed7 LP |
1357 | goto fail; |
1358 | ||
80876c20 LP |
1359 | service_set_state(s, SERVICE_STOP); |
1360 | } else | |
034c6ed7 LP |
1361 | service_enter_signal(s, SERVICE_STOP_SIGTERM, true); |
1362 | ||
1363 | return; | |
1364 | ||
1365 | fail: | |
9e2f7c11 | 1366 | log_warning("%s failed to run stop executable: %s", UNIT(s)->meta.id, strerror(-r)); |
034c6ed7 LP |
1367 | service_enter_signal(s, SERVICE_STOP_SIGTERM, false); |
1368 | } | |
1369 | ||
80876c20 LP |
1370 | static void service_enter_running(Service *s, bool success) { |
1371 | assert(s); | |
1372 | ||
1373 | if (!success) | |
1374 | s->failure = true; | |
1375 | ||
1376 | if (main_pid_good(s) != 0 && cgroup_good(s) != 0) | |
1377 | service_set_state(s, SERVICE_RUNNING); | |
1378 | else if (s->valid_no_process) | |
1379 | service_set_state(s, SERVICE_EXITED); | |
1380 | else | |
1381 | service_enter_stop(s, true); | |
1382 | } | |
1383 | ||
034c6ed7 LP |
1384 | static void service_enter_start_post(Service *s) { |
1385 | int r; | |
1386 | assert(s); | |
1387 | ||
5e94833f LP |
1388 | service_unwatch_control_pid(s); |
1389 | ||
80876c20 | 1390 | if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) { |
81a2b7ce LP |
1391 | if ((r = service_spawn(s, |
1392 | s->control_command, | |
1393 | true, | |
1394 | false, | |
1395 | !s->permissions_start_only, | |
1396 | !s->root_directory_start_only, | |
1397 | &s->control_pid)) < 0) | |
034c6ed7 LP |
1398 | goto fail; |
1399 | ||
d6ea93e3 | 1400 | |
80876c20 LP |
1401 | service_set_state(s, SERVICE_START_POST); |
1402 | } else | |
1403 | service_enter_running(s, true); | |
034c6ed7 LP |
1404 | |
1405 | return; | |
1406 | ||
1407 | fail: | |
9e2f7c11 | 1408 | log_warning("%s failed to run start-post executable: %s", UNIT(s)->meta.id, strerror(-r)); |
034c6ed7 LP |
1409 | service_enter_stop(s, false); |
1410 | } | |
1411 | ||
1412 | static void service_enter_start(Service *s) { | |
1413 | pid_t pid; | |
1414 | int r; | |
1415 | ||
1416 | assert(s); | |
1417 | ||
1418 | assert(s->exec_command[SERVICE_EXEC_START]); | |
1419 | assert(!s->exec_command[SERVICE_EXEC_START]->command_next); | |
1420 | ||
80876c20 LP |
1421 | if (s->type == SERVICE_FORKING) |
1422 | service_unwatch_control_pid(s); | |
1423 | else | |
1424 | service_unwatch_main_pid(s); | |
1425 | ||
81a2b7ce LP |
1426 | if ((r = service_spawn(s, |
1427 | s->exec_command[SERVICE_EXEC_START], | |
1428 | s->type == SERVICE_FORKING, | |
1429 | true, | |
1430 | true, | |
1431 | true, | |
1432 | &pid)) < 0) | |
034c6ed7 LP |
1433 | goto fail; |
1434 | ||
1435 | if (s->type == SERVICE_SIMPLE) { | |
1436 | /* For simple services we immediately start | |
1437 | * the START_POST binaries. */ | |
1438 | ||
1439 | s->main_pid = pid; | |
1440 | s->main_pid_known = true; | |
80876c20 | 1441 | |
034c6ed7 LP |
1442 | service_enter_start_post(s); |
1443 | ||
1444 | } else if (s->type == SERVICE_FORKING) { | |
1445 | ||
1446 | /* For forking services we wait until the start | |
1447 | * process exited. */ | |
1448 | ||
1449 | s->control_pid = pid; | |
80876c20 | 1450 | |
034c6ed7 | 1451 | s->control_command = s->exec_command[SERVICE_EXEC_START]; |
80876c20 LP |
1452 | service_set_state(s, SERVICE_START); |
1453 | ||
7d55e835 LP |
1454 | } else if (s->type == SERVICE_FINISH) { |
1455 | ||
1456 | /* For finishing services we wait until the start | |
1457 | * process exited, too, but it is our main process. */ | |
1458 | ||
1459 | s->main_pid = pid; | |
5e94833f | 1460 | s->main_pid_known = true; |
80876c20 | 1461 | |
7d55e835 | 1462 | s->control_command = s->exec_command[SERVICE_EXEC_START]; |
80876c20 | 1463 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
1464 | } else |
1465 | assert_not_reached("Unknown service type"); | |
1466 | ||
1467 | return; | |
1468 | ||
1469 | fail: | |
9e2f7c11 | 1470 | log_warning("%s failed to run start exectuable: %s", UNIT(s)->meta.id, strerror(-r)); |
80876c20 | 1471 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
034c6ed7 LP |
1472 | } |
1473 | ||
1474 | static void service_enter_start_pre(Service *s) { | |
1475 | int r; | |
1476 | ||
1477 | assert(s); | |
1478 | ||
5e94833f LP |
1479 | service_unwatch_control_pid(s); |
1480 | ||
80876c20 | 1481 | if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) { |
81a2b7ce LP |
1482 | if ((r = service_spawn(s, |
1483 | s->control_command, | |
1484 | true, | |
1485 | false, | |
1486 | !s->permissions_start_only, | |
1487 | !s->root_directory_start_only, | |
1488 | &s->control_pid)) < 0) | |
034c6ed7 LP |
1489 | goto fail; |
1490 | ||
80876c20 LP |
1491 | service_set_state(s, SERVICE_START_PRE); |
1492 | } else | |
034c6ed7 LP |
1493 | service_enter_start(s); |
1494 | ||
1495 | return; | |
1496 | ||
1497 | fail: | |
9e2f7c11 | 1498 | log_warning("%s failed to run start-pre executable: %s", UNIT(s)->meta.id, strerror(-r)); |
034c6ed7 LP |
1499 | service_enter_dead(s, false, true); |
1500 | } | |
1501 | ||
1502 | static void service_enter_restart(Service *s) { | |
1503 | int r; | |
1504 | assert(s); | |
1505 | ||
9ea9a0c8 LP |
1506 | service_enter_dead(s, true, false); |
1507 | ||
87f0e418 | 1508 | if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0) |
034c6ed7 LP |
1509 | goto fail; |
1510 | ||
9e2f7c11 | 1511 | log_debug("%s scheduled restart job.", UNIT(s)->meta.id); |
034c6ed7 LP |
1512 | return; |
1513 | ||
1514 | fail: | |
1515 | ||
9e2f7c11 | 1516 | log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r)); |
034c6ed7 LP |
1517 | service_enter_dead(s, false, false); |
1518 | } | |
1519 | ||
1520 | static void service_enter_reload(Service *s) { | |
1521 | int r; | |
1522 | ||
1523 | assert(s); | |
1524 | ||
5e94833f LP |
1525 | service_unwatch_control_pid(s); |
1526 | ||
80876c20 | 1527 | if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) { |
81a2b7ce LP |
1528 | if ((r = service_spawn(s, |
1529 | s->control_command, | |
1530 | true, | |
1531 | false, | |
1532 | !s->permissions_start_only, | |
1533 | !s->root_directory_start_only, | |
1534 | &s->control_pid)) < 0) | |
034c6ed7 LP |
1535 | goto fail; |
1536 | ||
80876c20 LP |
1537 | service_set_state(s, SERVICE_RELOAD); |
1538 | } else | |
1539 | service_enter_running(s, true); | |
034c6ed7 LP |
1540 | |
1541 | return; | |
1542 | ||
1543 | fail: | |
9e2f7c11 | 1544 | log_warning("%s failed to run reload executable: %s", UNIT(s)->meta.id, strerror(-r)); |
034c6ed7 LP |
1545 | service_enter_stop(s, false); |
1546 | } | |
1547 | ||
1548 | static void service_run_next(Service *s, bool success) { | |
1549 | int r; | |
1550 | ||
1551 | assert(s); | |
1552 | assert(s->control_command); | |
1553 | assert(s->control_command->command_next); | |
1554 | ||
1555 | if (!success) | |
1556 | s->failure = true; | |
1557 | ||
1558 | s->control_command = s->control_command->command_next; | |
1559 | ||
5e94833f LP |
1560 | service_unwatch_control_pid(s); |
1561 | ||
81a2b7ce LP |
1562 | if ((r = service_spawn(s, |
1563 | s->control_command, | |
1564 | true, | |
1565 | false, | |
1566 | !s->permissions_start_only, | |
1567 | !s->root_directory_start_only, | |
1568 | &s->control_pid)) < 0) | |
034c6ed7 LP |
1569 | goto fail; |
1570 | ||
1571 | return; | |
1572 | ||
1573 | fail: | |
9e2f7c11 | 1574 | log_warning("%s failed to run spawn next executable: %s", UNIT(s)->meta.id, strerror(-r)); |
034c6ed7 | 1575 | |
80876c20 LP |
1576 | if (s->state == SERVICE_START_PRE) |
1577 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); | |
1578 | else if (s->state == SERVICE_STOP) | |
1579 | service_enter_signal(s, SERVICE_STOP_SIGTERM, false); | |
034c6ed7 LP |
1580 | else if (s->state == SERVICE_STOP_POST) |
1581 | service_enter_dead(s, false, true); | |
1582 | else | |
1583 | service_enter_stop(s, false); | |
5cb5a6ff LP |
1584 | } |
1585 | ||
87f0e418 LP |
1586 | static int service_start(Unit *u) { |
1587 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
1588 | |
1589 | assert(s); | |
1590 | ||
034c6ed7 LP |
1591 | /* We cannot fulfill this request right now, try again later |
1592 | * please! */ | |
1593 | if (s->state == SERVICE_STOP || | |
1594 | s->state == SERVICE_STOP_SIGTERM || | |
1595 | s->state == SERVICE_STOP_SIGKILL || | |
1596 | s->state == SERVICE_STOP_POST || | |
1597 | s->state == SERVICE_FINAL_SIGTERM || | |
1598 | s->state == SERVICE_FINAL_SIGKILL) | |
5cb5a6ff LP |
1599 | return -EAGAIN; |
1600 | ||
034c6ed7 LP |
1601 | /* Already on it! */ |
1602 | if (s->state == SERVICE_START_PRE || | |
1603 | s->state == SERVICE_START || | |
1604 | s->state == SERVICE_START_POST) | |
1605 | return 0; | |
1606 | ||
1607 | assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART); | |
5cb5a6ff | 1608 | |
1e2e8133 LP |
1609 | /* Make sure we don't enter a busy loop of some kind. */ |
1610 | if (!ratelimit_test(&s->ratelimit)) { | |
9e2f7c11 | 1611 | log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id); |
1e2e8133 LP |
1612 | return -EAGAIN; |
1613 | } | |
1614 | ||
034c6ed7 LP |
1615 | s->failure = false; |
1616 | s->main_pid_known = false; | |
1617 | ||
1618 | service_enter_start_pre(s); | |
1619 | return 0; | |
5cb5a6ff LP |
1620 | } |
1621 | ||
87f0e418 LP |
1622 | static int service_stop(Unit *u) { |
1623 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
1624 | |
1625 | assert(s); | |
1626 | ||
e537352b | 1627 | /* Cannot do this now */ |
034c6ed7 LP |
1628 | if (s->state == SERVICE_START_PRE || |
1629 | s->state == SERVICE_START || | |
1630 | s->state == SERVICE_START_POST || | |
1631 | s->state == SERVICE_RELOAD) | |
1632 | return -EAGAIN; | |
1633 | ||
e537352b LP |
1634 | /* Already on it */ |
1635 | if (s->state == SERVICE_STOP || | |
1636 | s->state == SERVICE_STOP_SIGTERM || | |
1637 | s->state == SERVICE_STOP_SIGKILL || | |
1638 | s->state == SERVICE_STOP_POST || | |
1639 | s->state == SERVICE_FINAL_SIGTERM || | |
1640 | s->state == SERVICE_FINAL_SIGKILL) | |
1641 | return 0; | |
1642 | ||
034c6ed7 LP |
1643 | if (s->state == SERVICE_AUTO_RESTART) { |
1644 | service_set_state(s, SERVICE_DEAD); | |
1645 | return 0; | |
1646 | } | |
1647 | ||
80876c20 | 1648 | assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED); |
5cb5a6ff | 1649 | |
034c6ed7 | 1650 | service_enter_stop(s, true); |
5cb5a6ff LP |
1651 | return 0; |
1652 | } | |
1653 | ||
87f0e418 LP |
1654 | static int service_reload(Unit *u) { |
1655 | Service *s = SERVICE(u); | |
034c6ed7 LP |
1656 | |
1657 | assert(s); | |
1658 | ||
80876c20 | 1659 | assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED); |
034c6ed7 LP |
1660 | |
1661 | service_enter_reload(s); | |
5cb5a6ff LP |
1662 | return 0; |
1663 | } | |
1664 | ||
87f0e418 LP |
1665 | static bool service_can_reload(Unit *u) { |
1666 | Service *s = SERVICE(u); | |
034c6ed7 LP |
1667 | |
1668 | assert(s); | |
1669 | ||
1670 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
1671 | } | |
1672 | ||
87f0e418 LP |
1673 | static UnitActiveState service_active_state(Unit *u) { |
1674 | assert(u); | |
5cb5a6ff | 1675 | |
acbb0225 | 1676 | return state_translation_table[SERVICE(u)->state]; |
034c6ed7 LP |
1677 | } |
1678 | ||
10a94420 LP |
1679 | static const char *service_sub_state_to_string(Unit *u) { |
1680 | assert(u); | |
1681 | ||
1682 | return service_state_to_string(SERVICE(u)->state); | |
1683 | } | |
1684 | ||
87f0e418 LP |
1685 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1686 | Service *s = SERVICE(u); | |
034c6ed7 | 1687 | bool success; |
5cb5a6ff LP |
1688 | |
1689 | assert(s); | |
034c6ed7 LP |
1690 | assert(pid >= 0); |
1691 | ||
bd982a8b | 1692 | success = code == CLD_EXITED && status == 0; |
034c6ed7 LP |
1693 | s->failure = s->failure || !success; |
1694 | ||
1695 | if (s->main_pid == pid) { | |
1696 | ||
1697 | exec_status_fill(&s->main_exec_status, pid, code, status); | |
1698 | s->main_pid = 0; | |
1699 | ||
7d55e835 | 1700 | if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) { |
034c6ed7 LP |
1701 | assert(s->exec_command[SERVICE_EXEC_START]); |
1702 | s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status; | |
1703 | } | |
1704 | ||
9e2f7c11 | 1705 | log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status); |
034c6ed7 LP |
1706 | |
1707 | /* The service exited, so the service is officially | |
1708 | * gone. */ | |
1709 | ||
1710 | switch (s->state) { | |
1711 | ||
1712 | case SERVICE_START_POST: | |
1713 | case SERVICE_RELOAD: | |
1714 | case SERVICE_STOP: | |
1715 | /* Need to wait until the operation is | |
1716 | * done */ | |
1717 | break; | |
1718 | ||
7d55e835 LP |
1719 | case SERVICE_START: |
1720 | assert(s->type == SERVICE_FINISH); | |
1721 | ||
1722 | /* This was our main goal, so let's go on */ | |
1723 | if (success) | |
1724 | service_enter_start_post(s); | |
1725 | else | |
80876c20 | 1726 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
7d55e835 LP |
1727 | break; |
1728 | ||
034c6ed7 | 1729 | case SERVICE_RUNNING: |
80876c20 | 1730 | service_enter_running(s, success); |
034c6ed7 LP |
1731 | break; |
1732 | ||
1733 | case SERVICE_STOP_SIGTERM: | |
1734 | case SERVICE_STOP_SIGKILL: | |
1735 | ||
1736 | if (!control_pid_good(s)) | |
1737 | service_enter_stop_post(s, success); | |
5cb5a6ff | 1738 | |
034c6ed7 LP |
1739 | /* If there is still a control process, wait for that first */ |
1740 | break; | |
5cb5a6ff | 1741 | |
034c6ed7 LP |
1742 | default: |
1743 | assert_not_reached("Uh, main process died at wrong time."); | |
1744 | } | |
5cb5a6ff | 1745 | |
034c6ed7 LP |
1746 | } else if (s->control_pid == pid) { |
1747 | assert(s->control_command); | |
1748 | ||
1749 | exec_status_fill(&s->control_command->exec_status, pid, code, status); | |
1750 | s->control_pid = 0; | |
1751 | ||
9e2f7c11 | 1752 | log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status); |
034c6ed7 LP |
1753 | |
1754 | /* If we are shutting things down anyway we | |
1755 | * don't care about failing commands. */ | |
1756 | ||
80876c20 | 1757 | if (s->control_command->command_next && success) { |
034c6ed7 LP |
1758 | |
1759 | /* There is another command to * | |
1760 | * execute, so let's do that. */ | |
1761 | ||
9e2f7c11 | 1762 | log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state)); |
034c6ed7 LP |
1763 | service_run_next(s, success); |
1764 | ||
80876c20 | 1765 | } else { |
034c6ed7 LP |
1766 | /* No further commands for this step, so let's |
1767 | * figure out what to do next */ | |
1768 | ||
9e2f7c11 | 1769 | log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state)); |
bd982a8b | 1770 | |
034c6ed7 LP |
1771 | switch (s->state) { |
1772 | ||
1773 | case SERVICE_START_PRE: | |
1774 | if (success) | |
1775 | service_enter_start(s); | |
1776 | else | |
80876c20 | 1777 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
034c6ed7 LP |
1778 | break; |
1779 | ||
1780 | case SERVICE_START: | |
1781 | assert(s->type == SERVICE_FORKING); | |
1782 | ||
1783 | /* Let's try to load the pid | |
1784 | * file here if we can. We | |
1785 | * ignore the return value, | |
1786 | * since the PID file might | |
1787 | * actually be created by a | |
1788 | * START_POST script */ | |
1789 | ||
1790 | if (success) { | |
1791 | if (s->pid_file) | |
1792 | service_load_pid_file(s); | |
1793 | ||
1794 | service_enter_start_post(s); | |
1795 | } else | |
80876c20 | 1796 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
034c6ed7 LP |
1797 | |
1798 | break; | |
1799 | ||
1800 | case SERVICE_START_POST: | |
1801 | if (success && s->pid_file && !s->main_pid_known) { | |
1802 | int r; | |
1803 | ||
1804 | /* Hmm, let's see if we can | |
1805 | * load the pid now after the | |
1806 | * start-post scripts got | |
1807 | * executed. */ | |
1808 | ||
1809 | if ((r = service_load_pid_file(s)) < 0) | |
9e2f7c11 | 1810 | log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r)); |
034c6ed7 LP |
1811 | } |
1812 | ||
1813 | /* Fall through */ | |
1814 | ||
1815 | case SERVICE_RELOAD: | |
80876c20 LP |
1816 | if (success) |
1817 | service_enter_running(s, true); | |
1818 | else | |
034c6ed7 LP |
1819 | service_enter_stop(s, false); |
1820 | ||
1821 | break; | |
1822 | ||
1823 | case SERVICE_STOP: | |
80876c20 | 1824 | service_enter_signal(s, SERVICE_STOP_SIGTERM, success); |
034c6ed7 LP |
1825 | break; |
1826 | ||
1827 | case SERVICE_STOP_SIGTERM: | |
1828 | case SERVICE_STOP_SIGKILL: | |
1829 | if (main_pid_good(s) <= 0) | |
1830 | service_enter_stop_post(s, success); | |
1831 | ||
1832 | /* If there is still a service | |
1833 | * process around, wait until | |
1834 | * that one quit, too */ | |
1835 | break; | |
1836 | ||
1837 | case SERVICE_STOP_POST: | |
1838 | case SERVICE_FINAL_SIGTERM: | |
1839 | case SERVICE_FINAL_SIGKILL: | |
1840 | service_enter_dead(s, success, true); | |
1841 | break; | |
1842 | ||
1843 | default: | |
1844 | assert_not_reached("Uh, control process died at wrong time."); | |
1845 | } | |
1846 | } | |
1847 | } else | |
1848 | assert_not_reached("Got SIGCHLD for unkown PID"); | |
1849 | } | |
1850 | ||
acbb0225 | 1851 | static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) { |
87f0e418 | 1852 | Service *s = SERVICE(u); |
034c6ed7 LP |
1853 | |
1854 | assert(s); | |
1855 | assert(elapsed == 1); | |
1856 | ||
acbb0225 | 1857 | assert(w == &s->timer_watch); |
034c6ed7 LP |
1858 | |
1859 | switch (s->state) { | |
1860 | ||
1861 | case SERVICE_START_PRE: | |
1862 | case SERVICE_START: | |
9e2f7c11 | 1863 | log_warning("%s operation timed out. Terminating.", u->meta.id); |
80876c20 LP |
1864 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
1865 | break; | |
1866 | ||
034c6ed7 LP |
1867 | case SERVICE_START_POST: |
1868 | case SERVICE_RELOAD: | |
9e2f7c11 | 1869 | log_warning("%s operation timed out. Stopping.", u->meta.id); |
034c6ed7 LP |
1870 | service_enter_stop(s, false); |
1871 | break; | |
1872 | ||
1873 | case SERVICE_STOP: | |
9e2f7c11 | 1874 | log_warning("%s stopping timed out. Terminating.", u->meta.id); |
034c6ed7 LP |
1875 | service_enter_signal(s, SERVICE_STOP_SIGTERM, false); |
1876 | break; | |
1877 | ||
1878 | case SERVICE_STOP_SIGTERM: | |
9e2f7c11 | 1879 | log_warning("%s stopping timed out. Killing.", u->meta.id); |
034c6ed7 LP |
1880 | service_enter_signal(s, SERVICE_STOP_SIGKILL, false); |
1881 | break; | |
1882 | ||
1883 | case SERVICE_STOP_SIGKILL: | |
1884 | /* Uh, wie sent a SIGKILL and it is still not gone? | |
1885 | * Must be something we cannot kill, so let's just be | |
1886 | * weirded out and continue */ | |
1887 | ||
9e2f7c11 | 1888 | log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id); |
034c6ed7 LP |
1889 | service_enter_stop_post(s, false); |
1890 | break; | |
1891 | ||
1892 | case SERVICE_STOP_POST: | |
9e2f7c11 | 1893 | log_warning("%s stopping timed out (2). Terminating.", u->meta.id); |
034c6ed7 LP |
1894 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
1895 | break; | |
1896 | ||
1897 | case SERVICE_FINAL_SIGTERM: | |
9e2f7c11 | 1898 | log_warning("%s stopping timed out (2). Killing.", u->meta.id); |
034c6ed7 LP |
1899 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, false); |
1900 | break; | |
1901 | ||
1902 | case SERVICE_FINAL_SIGKILL: | |
9e2f7c11 | 1903 | log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id); |
034c6ed7 LP |
1904 | service_enter_dead(s, false, true); |
1905 | break; | |
1906 | ||
1907 | case SERVICE_AUTO_RESTART: | |
9e2f7c11 | 1908 | log_debug("%s holdoff time over, scheduling restart.", u->meta.id); |
034c6ed7 LP |
1909 | service_enter_restart(s); |
1910 | break; | |
1911 | ||
1912 | default: | |
1913 | assert_not_reached("Timeout at wrong time."); | |
1914 | } | |
5cb5a6ff LP |
1915 | } |
1916 | ||
8e274523 LP |
1917 | static void service_cgroup_notify_event(Unit *u) { |
1918 | Service *s = SERVICE(u); | |
1919 | ||
1920 | assert(u); | |
1921 | ||
9e2f7c11 | 1922 | log_debug("%s: cgroup is empty", u->meta.id); |
8e274523 LP |
1923 | |
1924 | switch (s->state) { | |
1925 | ||
1926 | /* Waiting for SIGCHLD is usually more interesting, | |
1927 | * because it includes return codes/signals. Which is | |
1928 | * why we ignore the cgroup events for most cases, | |
1929 | * except when we don't know pid which to expect the | |
1930 | * SIGCHLD for. */ | |
1931 | ||
1932 | case SERVICE_RUNNING: | |
80876c20 | 1933 | service_enter_running(s, true); |
8e274523 LP |
1934 | break; |
1935 | ||
1936 | default: | |
1937 | ; | |
1938 | } | |
1939 | } | |
1940 | ||
2c4104f0 | 1941 | static int service_enumerate(Manager *m) { |
2c4104f0 LP |
1942 | char **p; |
1943 | unsigned i; | |
1944 | DIR *d = NULL; | |
1945 | char *path = NULL, *fpath = NULL, *name = NULL; | |
1946 | int r; | |
1947 | ||
1948 | assert(m); | |
1949 | ||
5e177ece | 1950 | STRV_FOREACH(p, m->sysvrcnd_path) |
23a177ef | 1951 | for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) { |
2c4104f0 LP |
1952 | struct dirent *de; |
1953 | ||
1954 | free(path); | |
1955 | path = NULL; | |
23a177ef | 1956 | if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0) { |
2c4104f0 LP |
1957 | r = -ENOMEM; |
1958 | goto finish; | |
1959 | } | |
1960 | ||
1961 | if (d) | |
1962 | closedir(d); | |
1963 | ||
1964 | if (!(d = opendir(path))) { | |
1965 | if (errno != ENOENT) | |
1966 | log_warning("opendir() failed on %s: %s", path, strerror(errno)); | |
1967 | ||
1968 | continue; | |
1969 | } | |
1970 | ||
1971 | while ((de = readdir(d))) { | |
1972 | Unit *runlevel, *service; | |
1973 | ||
1974 | if (ignore_file(de->d_name)) | |
1975 | continue; | |
1976 | ||
1977 | if (de->d_name[0] != 'S' && de->d_name[0] != 'K') | |
1978 | continue; | |
1979 | ||
1980 | if (strlen(de->d_name) < 4) | |
1981 | continue; | |
1982 | ||
1983 | free(fpath); | |
1984 | fpath = NULL; | |
23a177ef | 1985 | if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i], de->d_name) < 0) { |
2c4104f0 LP |
1986 | r = -ENOMEM; |
1987 | goto finish; | |
1988 | } | |
1989 | ||
1990 | if (access(fpath, X_OK) < 0) { | |
1991 | ||
1992 | if (errno != ENOENT) | |
1993 | log_warning("access() failed on %s: %s", fpath, strerror(errno)); | |
1994 | ||
1995 | continue; | |
1996 | } | |
1997 | ||
1998 | free(name); | |
1999 | name = NULL; | |
2000 | if (asprintf(&name, "%s.service", de->d_name+3) < 0) { | |
2001 | r = -ENOMEM; | |
2002 | goto finish; | |
2003 | } | |
2004 | ||
9e2f7c11 | 2005 | if ((r = manager_load_unit(m, name, NULL, &service)) < 0) |
2c4104f0 LP |
2006 | goto finish; |
2007 | ||
9e2f7c11 | 2008 | if ((r = manager_load_unit(m, rcnd_table[i+1], NULL, &runlevel)) < 0) |
2c4104f0 LP |
2009 | goto finish; |
2010 | ||
2011 | if (de->d_name[0] == 'S') { | |
2012 | if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0) | |
2013 | goto finish; | |
2014 | ||
2015 | if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0) | |
2016 | goto finish; | |
23a177ef LP |
2017 | |
2018 | } else if (de->d_name[0] == 'K' && | |
2019 | (streq(rcnd_table[i+1], SPECIAL_RUNLEVEL0_TARGET) || | |
2020 | streq(rcnd_table[i+1], SPECIAL_RUNLEVEL6_TARGET))) { | |
2021 | ||
2022 | /* We honour K links only for | |
2023 | * halt/reboot. For the normal | |
2024 | * runlevels we assume the | |
2025 | * stop jobs will be | |
2026 | * implicitly added by the | |
2027 | * core logic. */ | |
2028 | ||
2c4104f0 LP |
2029 | if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0) |
2030 | goto finish; | |
2031 | ||
2032 | if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0) | |
2033 | goto finish; | |
2034 | } | |
2035 | } | |
2036 | } | |
2037 | ||
2038 | r = 0; | |
2039 | ||
2040 | finish: | |
2041 | free(path); | |
2042 | free(fpath); | |
2043 | free(name); | |
2044 | closedir(d); | |
2045 | ||
2046 | return r; | |
2047 | } | |
2048 | ||
4f2d528d LP |
2049 | int service_set_socket_fd(Service *s, int fd) { |
2050 | assert(s); | |
2051 | assert(fd >= 0); | |
2052 | ||
2053 | /* This is called by the socket code when instantiating a new | |
2054 | * service for a stream socket and the socket needs to be | |
2055 | * configured. */ | |
2056 | ||
2057 | if (UNIT(s)->meta.load_state != UNIT_LOADED) | |
2058 | return -EINVAL; | |
2059 | ||
2060 | if (s->socket_fd >= 0) | |
2061 | return -EBUSY; | |
2062 | ||
2063 | if (s->state != SERVICE_DEAD) | |
2064 | return -EAGAIN; | |
2065 | ||
2066 | s->socket_fd = fd; | |
2067 | return 0; | |
2068 | } | |
2069 | ||
94f04347 LP |
2070 | static const char* const service_state_table[_SERVICE_STATE_MAX] = { |
2071 | [SERVICE_DEAD] = "dead", | |
2072 | [SERVICE_START_PRE] = "start-pre", | |
2073 | [SERVICE_START] = "start", | |
2074 | [SERVICE_START_POST] = "start-post", | |
2075 | [SERVICE_RUNNING] = "running", | |
80876c20 | 2076 | [SERVICE_EXITED] = "exited", |
94f04347 LP |
2077 | [SERVICE_RELOAD] = "reload", |
2078 | [SERVICE_STOP] = "stop", | |
2079 | [SERVICE_STOP_SIGTERM] = "stop-sigterm", | |
2080 | [SERVICE_STOP_SIGKILL] = "stop-sigkill", | |
2081 | [SERVICE_STOP_POST] = "stop-post", | |
2082 | [SERVICE_FINAL_SIGTERM] = "final-sigterm", | |
2083 | [SERVICE_FINAL_SIGKILL] = "final-sigkill", | |
2084 | [SERVICE_MAINTAINANCE] = "maintainance", | |
2085 | [SERVICE_AUTO_RESTART] = "auto-restart", | |
2086 | }; | |
2087 | ||
2088 | DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState); | |
2089 | ||
2090 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { | |
2091 | [SERVICE_ONCE] = "once", | |
2092 | [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success", | |
40531a55 | 2093 | [SERVICE_RESTART_ALWAYS] = "restart-always", |
94f04347 LP |
2094 | }; |
2095 | ||
2096 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
2097 | ||
2098 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
2099 | [SERVICE_FORKING] = "forking", | |
2100 | [SERVICE_SIMPLE] = "simple", | |
2101 | [SERVICE_FINISH] = "finish" | |
2102 | }; | |
2103 | ||
2104 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
2105 | ||
e537352b | 2106 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
2107 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
2108 | [SERVICE_EXEC_START] = "ExecStart", | |
2109 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
2110 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
2111 | [SERVICE_EXEC_STOP] = "ExecStop", | |
2112 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
2113 | }; | |
2114 | ||
2115 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
2116 | ||
87f0e418 | 2117 | const UnitVTable service_vtable = { |
5cb5a6ff LP |
2118 | .suffix = ".service", |
2119 | ||
034c6ed7 | 2120 | .init = service_init, |
e537352b | 2121 | .load = service_load, |
034c6ed7 LP |
2122 | .done = service_done, |
2123 | ||
5cb5a6ff LP |
2124 | .dump = service_dump, |
2125 | ||
2126 | .start = service_start, | |
2127 | .stop = service_stop, | |
2128 | .reload = service_reload, | |
2129 | ||
034c6ed7 LP |
2130 | .can_reload = service_can_reload, |
2131 | ||
5cb5a6ff | 2132 | .active_state = service_active_state, |
10a94420 | 2133 | .sub_state_to_string = service_sub_state_to_string, |
5cb5a6ff | 2134 | |
034c6ed7 LP |
2135 | .sigchld_event = service_sigchld_event, |
2136 | .timer_event = service_timer_event, | |
2c4104f0 | 2137 | |
8e274523 LP |
2138 | .cgroup_notify_empty = service_cgroup_notify_event, |
2139 | ||
2c4104f0 | 2140 | .enumerate = service_enumerate |
5cb5a6ff | 2141 | }; |