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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 LP |
32 | #include "strv.h" |
33 | ||
34 | #define COMMENTS "#;\n" | |
35 | #define NEWLINES "\n\r" | |
36 | #define LINE_MAX 4096 | |
034c6ed7 | 37 | |
23a177ef | 38 | static const char * const rcnd_table[] = { |
adcbe07c LP |
39 | "/rc0.d", SPECIAL_RUNLEVEL0_TARGET, |
40 | "/rc1.d", SPECIAL_RUNLEVEL1_TARGET, | |
41 | "/rc2.d", SPECIAL_RUNLEVEL2_TARGET, | |
42 | "/rc3.d", SPECIAL_RUNLEVEL3_TARGET, | |
43 | "/rc4.d", SPECIAL_RUNLEVEL4_TARGET, | |
44 | "/rc5.d", SPECIAL_RUNLEVEL5_TARGET, | |
45 | "/rc6.d", SPECIAL_RUNLEVEL6_TARGET, | |
46 | "/boot.d", SPECIAL_BASIC_TARGET | |
23a177ef LP |
47 | }; |
48 | ||
acbb0225 | 49 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { |
87f0e418 LP |
50 | [SERVICE_DEAD] = UNIT_INACTIVE, |
51 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
52 | [SERVICE_START] = UNIT_ACTIVATING, | |
53 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
54 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
80876c20 | 55 | [SERVICE_EXITED] = UNIT_ACTIVE, |
87f0e418 LP |
56 | [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING, |
57 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
58 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, | |
59 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
60 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
61 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
62 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
63 | [SERVICE_MAINTAINANCE] = UNIT_INACTIVE, | |
64 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING, | |
034c6ed7 | 65 | }; |
5cb5a6ff | 66 | |
5e94833f LP |
67 | static void service_unwatch_control_pid(Service *s) { |
68 | assert(s); | |
69 | ||
70 | if (s->control_pid <= 0) | |
71 | return; | |
72 | ||
73 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
74 | s->control_pid = 0; | |
75 | } | |
76 | ||
77 | static void service_unwatch_main_pid(Service *s) { | |
78 | assert(s); | |
79 | ||
80 | if (s->main_pid <= 0) | |
81 | return; | |
82 | ||
83 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
84 | s->main_pid = 0; | |
85 | } | |
86 | ||
87f0e418 LP |
87 | static void service_done(Unit *u) { |
88 | Service *s = SERVICE(u); | |
44d8db9e LP |
89 | |
90 | assert(s); | |
91 | ||
92 | free(s->pid_file); | |
93 | s->pid_file = NULL; | |
94 | ||
2c4104f0 LP |
95 | free(s->sysv_path); |
96 | s->sysv_path = NULL; | |
97 | ||
8309400a LP |
98 | free(s->sysv_runlevels); |
99 | s->sysv_runlevels = NULL; | |
100 | ||
44d8db9e | 101 | exec_context_done(&s->exec_context); |
e537352b | 102 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); |
44d8db9e LP |
103 | s->control_command = NULL; |
104 | ||
105 | /* This will leak a process, but at least no memory or any of | |
106 | * our resources */ | |
5e94833f LP |
107 | service_unwatch_main_pid(s); |
108 | service_unwatch_control_pid(s); | |
44d8db9e | 109 | |
acbb0225 | 110 | unit_unwatch_timer(u, &s->timer_watch); |
44d8db9e LP |
111 | } |
112 | ||
2c4104f0 LP |
113 | static int sysv_translate_name(const char *name, char **_r) { |
114 | ||
115 | static const char * const table[] = { | |
116 | "$local_fs", SPECIAL_LOCAL_FS_TARGET, | |
117 | "$network", SPECIAL_NETWORK_TARGET, | |
118 | "$named", SPECIAL_NSS_LOOKUP_TARGET, | |
119 | "$portmap", SPECIAL_RPCBIND_TARGET, | |
120 | "$remote_fs", SPECIAL_REMOTE_FS_TARGET, | |
121 | "$syslog", SPECIAL_SYSLOG_TARGET, | |
122 | "$time", SPECIAL_RTC_SET_TARGET | |
123 | }; | |
124 | ||
125 | unsigned i; | |
126 | char *r; | |
127 | ||
128 | for (i = 0; i < ELEMENTSOF(table); i += 2) | |
129 | if (streq(table[i], name)) { | |
130 | if (!(r = strdup(table[i+1]))) | |
131 | return -ENOMEM; | |
132 | ||
133 | goto finish; | |
134 | } | |
135 | ||
136 | if (*name == '$') | |
137 | return 0; | |
138 | ||
139 | if (asprintf(&r, "%s.service", name) < 0) | |
140 | return -ENOMEM; | |
141 | ||
142 | finish: | |
143 | ||
144 | if (_r) | |
145 | *_r = r; | |
146 | ||
147 | return 1; | |
148 | } | |
149 | ||
150 | static int sysv_chkconfig_order(Service *s) { | |
151 | Meta *other; | |
152 | int r; | |
153 | ||
154 | assert(s); | |
155 | ||
156 | if (s->sysv_start_priority < 0) | |
157 | return 0; | |
158 | ||
23a177ef LP |
159 | /* For each pair of services where at least one lacks a LSB |
160 | * header, we use the start priority value to order things. */ | |
2c4104f0 LP |
161 | |
162 | LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) { | |
163 | Service *t; | |
164 | UnitDependency d; | |
165 | ||
166 | t = (Service*) other; | |
167 | ||
168 | if (s == t) | |
169 | continue; | |
170 | ||
171 | if (t->sysv_start_priority < 0) | |
172 | continue; | |
173 | ||
51a1a79d LP |
174 | /* If both units have modern headers we don't care |
175 | * about the priorities */ | |
176 | if ((!s->sysv_path || s->sysv_has_lsb) && | |
177 | (!t->sysv_path || t->sysv_has_lsb)) | |
23a177ef LP |
178 | continue; |
179 | ||
2c4104f0 LP |
180 | if (t->sysv_start_priority < s->sysv_start_priority) |
181 | d = UNIT_AFTER; | |
182 | else if (t->sysv_start_priority > s->sysv_start_priority) | |
183 | d = UNIT_BEFORE; | |
184 | else | |
185 | continue; | |
186 | ||
187 | /* FIXME: Maybe we should compare the name here lexicographically? */ | |
188 | ||
189 | if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t))) < 0) | |
190 | return r; | |
191 | } | |
192 | ||
193 | return 0; | |
194 | } | |
195 | ||
196 | static ExecCommand *exec_command_new(const char *path, const char *arg1) { | |
197 | ExecCommand *c; | |
198 | ||
199 | if (!(c = new0(ExecCommand, 1))) | |
200 | return NULL; | |
201 | ||
202 | if (!(c->path = strdup(path))) { | |
203 | free(c); | |
204 | return NULL; | |
205 | } | |
206 | ||
207 | if (!(c->argv = strv_new(path, arg1, NULL))) { | |
208 | free(c->path); | |
209 | free(c); | |
210 | return NULL; | |
211 | } | |
212 | ||
213 | return c; | |
214 | } | |
215 | ||
216 | static int sysv_exec_commands(Service *s) { | |
217 | ExecCommand *c; | |
218 | ||
219 | assert(s); | |
220 | assert(s->sysv_path); | |
221 | ||
222 | if (!(c = exec_command_new(s->sysv_path, "start"))) | |
223 | return -ENOMEM; | |
224 | exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c); | |
225 | ||
226 | if (!(c = exec_command_new(s->sysv_path, "stop"))) | |
227 | return -ENOMEM; | |
228 | exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c); | |
229 | ||
230 | if (!(c = exec_command_new(s->sysv_path, "reload"))) | |
231 | return -ENOMEM; | |
232 | exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c); | |
233 | ||
234 | return 0; | |
235 | } | |
236 | ||
23a177ef LP |
237 | static int priority_from_rcd(Service *s, const char *init_script) { |
238 | char **p; | |
239 | unsigned i; | |
240 | ||
061978fa | 241 | STRV_FOREACH(p, UNIT(s)->meta.manager->sysvrcnd_path) |
23a177ef LP |
242 | for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) { |
243 | char *path; | |
244 | DIR *d; | |
245 | struct dirent *de; | |
246 | ||
247 | if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0) | |
248 | return -ENOMEM; | |
249 | ||
250 | d = opendir(path); | |
251 | free(path); | |
252 | ||
253 | if (!d) { | |
254 | if (errno != ENOENT) | |
255 | log_warning("opendir() failed on %s: %s", path, strerror(errno)); | |
256 | ||
257 | continue; | |
258 | } | |
259 | ||
260 | while ((de = readdir(d))) { | |
261 | int a, b; | |
262 | ||
263 | if (ignore_file(de->d_name)) | |
264 | continue; | |
265 | ||
266 | if (de->d_name[0] != 'S') | |
267 | continue; | |
268 | ||
269 | if (strlen(de->d_name) < 4) | |
270 | continue; | |
271 | ||
272 | if (!streq(de->d_name + 3, init_script)) | |
273 | continue; | |
274 | ||
275 | /* Yay, we found it! Now decode the priority */ | |
276 | ||
277 | a = undecchar(de->d_name[1]); | |
278 | b = undecchar(de->d_name[2]); | |
279 | ||
280 | if (a < 0 || b < 0) | |
281 | continue; | |
282 | ||
283 | s->sysv_start_priority = a*10 + b; | |
284 | ||
285 | log_debug("Determined priority %i from link farm for %s", s->sysv_start_priority, unit_id(UNIT(s))); | |
286 | ||
287 | closedir(d); | |
288 | return 0; | |
289 | } | |
290 | ||
291 | closedir(d); | |
292 | } | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
e537352b | 297 | static int service_load_sysv_path(Service *s, const char *path) { |
2c4104f0 LP |
298 | FILE *f; |
299 | Unit *u; | |
300 | unsigned line = 0; | |
301 | int r; | |
302 | enum { | |
303 | NORMAL, | |
304 | DESCRIPTION, | |
305 | LSB, | |
306 | LSB_DESCRIPTION | |
307 | } state = NORMAL; | |
23a177ef LP |
308 | |
309 | assert(s); | |
310 | assert(path); | |
2c4104f0 LP |
311 | |
312 | u = UNIT(s); | |
313 | ||
314 | if (!(f = fopen(path, "re"))) { | |
315 | r = errno == ENOENT ? 0 : -errno; | |
316 | goto finish; | |
317 | } | |
318 | ||
319 | s->type = SERVICE_FORKING; | |
320 | s->restart = SERVICE_ONCE; | |
321 | ||
322 | free(s->sysv_path); | |
323 | if (!(s->sysv_path = strdup(path))) { | |
324 | r = -ENOMEM; | |
325 | goto finish; | |
326 | } | |
327 | ||
328 | while (!feof(f)) { | |
329 | char l[LINE_MAX], *t; | |
330 | ||
331 | if (!fgets(l, sizeof(l), f)) { | |
332 | if (feof(f)) | |
333 | break; | |
334 | ||
335 | r = -errno; | |
336 | log_error("Failed to read configuration file '%s': %s", path, strerror(-r)); | |
337 | goto finish; | |
338 | } | |
339 | ||
340 | line++; | |
341 | ||
342 | t = strstrip(l); | |
343 | if (*t != '#') | |
344 | continue; | |
345 | ||
346 | if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) { | |
347 | state = LSB; | |
23a177ef | 348 | s->sysv_has_lsb = true; |
2c4104f0 LP |
349 | continue; |
350 | } | |
351 | ||
352 | if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) { | |
353 | state = NORMAL; | |
354 | continue; | |
355 | } | |
356 | ||
357 | t++; | |
358 | t += strspn(t, WHITESPACE); | |
359 | ||
360 | if (state == NORMAL) { | |
361 | ||
362 | /* Try to parse Red Hat style chkconfig headers */ | |
363 | ||
364 | if (startswith(t, "chkconfig:")) { | |
365 | int start_priority; | |
8309400a | 366 | char runlevels[16], *k; |
2c4104f0 LP |
367 | |
368 | state = NORMAL; | |
369 | ||
8309400a LP |
370 | if (sscanf(t+10, "%15s %i %*i", |
371 | runlevels, | |
372 | &start_priority) != 2) { | |
2c4104f0 LP |
373 | |
374 | log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line); | |
375 | continue; | |
376 | } | |
377 | ||
8309400a | 378 | if (start_priority < 0 || start_priority > 99) |
2c4104f0 | 379 | log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line); |
8309400a LP |
380 | else |
381 | s->sysv_start_priority = start_priority; | |
382 | ||
383 | char_array_0(runlevels); | |
384 | k = delete_chars(runlevels, WHITESPACE "-"); | |
385 | ||
386 | if (k[0]) { | |
387 | char *d; | |
388 | ||
389 | if (!(d = strdup(k))) { | |
390 | r = -ENOMEM; | |
391 | goto finish; | |
392 | } | |
393 | ||
394 | free(s->sysv_runlevels); | |
395 | s->sysv_runlevels = d; | |
2c4104f0 LP |
396 | } |
397 | ||
2c4104f0 LP |
398 | |
399 | } else if (startswith(t, "description:")) { | |
400 | ||
401 | size_t k = strlen(t); | |
402 | char *d; | |
403 | ||
404 | if (t[k-1] == '\\') { | |
405 | state = DESCRIPTION; | |
406 | t[k-1] = 0; | |
407 | } | |
408 | ||
409 | if (!(d = strdup(strstrip(t+12)))) { | |
410 | r = -ENOMEM; | |
411 | goto finish; | |
412 | } | |
413 | ||
414 | free(u->meta.description); | |
415 | u->meta.description = d; | |
416 | ||
417 | } else if (startswith(t, "pidfile:")) { | |
418 | ||
419 | char *fn; | |
420 | ||
421 | state = NORMAL; | |
422 | ||
423 | fn = strstrip(t+8); | |
424 | if (!path_is_absolute(fn)) { | |
425 | log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line); | |
426 | continue; | |
427 | } | |
428 | ||
429 | if (!(fn = strdup(fn))) { | |
430 | r = -ENOMEM; | |
431 | goto finish; | |
432 | } | |
433 | ||
434 | free(s->pid_file); | |
435 | s->pid_file = fn; | |
436 | } | |
437 | ||
438 | } else if (state == DESCRIPTION) { | |
439 | ||
440 | /* Try to parse Red Hat style description | |
441 | * continuation */ | |
442 | ||
443 | size_t k = strlen(t); | |
444 | char *d; | |
445 | ||
446 | if (t[k-1] == '\\') | |
447 | t[k-1] = 0; | |
448 | else | |
449 | state = NORMAL; | |
450 | ||
451 | assert(u->meta.description); | |
452 | if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) { | |
453 | r = -ENOMEM; | |
454 | goto finish; | |
455 | } | |
456 | ||
457 | free(u->meta.description); | |
458 | u->meta.description = d; | |
459 | ||
460 | } else if (state == LSB || state == LSB_DESCRIPTION) { | |
461 | ||
462 | if (startswith(t, "Provides:")) { | |
463 | char *i, *w; | |
464 | size_t z; | |
465 | ||
466 | state = LSB; | |
467 | ||
468 | FOREACH_WORD(w, z, t+9, i) { | |
469 | char *n, *m; | |
470 | ||
471 | if (!(n = strndup(w, z))) { | |
472 | r = -ENOMEM; | |
473 | goto finish; | |
474 | } | |
475 | ||
476 | r = sysv_translate_name(n, &m); | |
477 | free(n); | |
478 | ||
479 | if (r < 0) | |
480 | goto finish; | |
481 | ||
482 | if (r == 0) | |
483 | continue; | |
484 | ||
bd77d0fc LP |
485 | if (unit_name_to_type(m) == UNIT_SERVICE) |
486 | r = unit_add_name(u, m); | |
487 | else { | |
488 | if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m)) >= 0) | |
489 | r = unit_add_dependency_by_name(u, UNIT_BEFORE, m); | |
490 | } | |
491 | ||
2c4104f0 LP |
492 | free(m); |
493 | ||
494 | if (r < 0) | |
495 | goto finish; | |
496 | } | |
497 | ||
498 | } else if (startswith(t, "Required-Start:") || | |
499 | startswith(t, "Should-Start:")) { | |
500 | char *i, *w; | |
501 | size_t z; | |
502 | ||
503 | state = LSB; | |
504 | ||
505 | FOREACH_WORD(w, z, strchr(t, ':')+1, i) { | |
506 | char *n, *m; | |
507 | ||
508 | if (!(n = strndup(w, z))) { | |
509 | r = -ENOMEM; | |
510 | goto finish; | |
511 | } | |
512 | ||
513 | r = sysv_translate_name(n, &m); | |
514 | free(n); | |
515 | ||
516 | if (r < 0) | |
517 | goto finish; | |
518 | ||
519 | if (r == 0) | |
520 | continue; | |
521 | ||
fc22fc6e | 522 | r = unit_add_dependency_by_name(u, UNIT_AFTER, m); |
2c4104f0 LP |
523 | free(m); |
524 | ||
525 | if (r < 0) | |
526 | goto finish; | |
527 | } | |
8309400a LP |
528 | } else if (startswith(t, "Default-Start:")) { |
529 | char *k, *d; | |
530 | ||
531 | state = LSB; | |
532 | ||
533 | k = delete_chars(t+14, WHITESPACE "-"); | |
534 | ||
535 | if (k[0] != 0) { | |
536 | if (!(d = strdup(k))) { | |
537 | r = -ENOMEM; | |
538 | goto finish; | |
539 | } | |
540 | ||
541 | free(s->sysv_runlevels); | |
542 | s->sysv_runlevels = d; | |
543 | } | |
2c4104f0 LP |
544 | |
545 | } else if (startswith(t, "Description:")) { | |
546 | char *d; | |
547 | ||
548 | state = LSB_DESCRIPTION; | |
549 | ||
550 | if (!(d = strdup(strstrip(t+12)))) { | |
551 | r = -ENOMEM; | |
552 | goto finish; | |
553 | } | |
554 | ||
555 | free(u->meta.description); | |
556 | u->meta.description = d; | |
557 | ||
8309400a LP |
558 | } else if (startswith(t, "Short-Description:") && |
559 | !u->meta.description) { | |
2c4104f0 LP |
560 | char *d; |
561 | ||
562 | /* We use the short description only | |
563 | * if no long description is set. */ | |
564 | ||
565 | state = LSB; | |
566 | ||
567 | if (!(d = strdup(strstrip(t+18)))) { | |
568 | r = -ENOMEM; | |
569 | goto finish; | |
570 | } | |
571 | ||
2c4104f0 LP |
572 | u->meta.description = d; |
573 | ||
574 | } else if (state == LSB_DESCRIPTION) { | |
575 | ||
576 | if (startswith(l, "#\t") || startswith(l, "# ")) { | |
577 | char *d; | |
578 | ||
579 | assert(u->meta.description); | |
580 | if (asprintf(&d, "%s %s", u->meta.description, t) < 0) { | |
581 | r = -ENOMEM; | |
582 | goto finish; | |
583 | } | |
584 | ||
585 | free(u->meta.description); | |
586 | u->meta.description = d; | |
587 | } else | |
588 | state = LSB; | |
589 | } | |
590 | } | |
591 | } | |
592 | ||
23a177ef LP |
593 | /* If init scripts have no LSB header, then we enforce the |
594 | * ordering via the chkconfig priorities. We try to determine | |
595 | * a priority for *all* init scripts here, since they are | |
596 | * needed as soon as at least one non-LSB script is used. */ | |
2c4104f0 | 597 | |
23a177ef LP |
598 | if (s->sysv_start_priority < 0) { |
599 | log_debug("%s has no chkconfig header, trying to determine SysV priority from link farm.", unit_id(u)); | |
600 | ||
601 | if ((r = priority_from_rcd(s, file_name_from_path(path))) < 0) | |
2c4104f0 LP |
602 | goto finish; |
603 | ||
23a177ef LP |
604 | if (s->sysv_start_priority < 0) |
605 | log_warning("%s has neither a chkconfig header nor a directory link, cannot order unit!", unit_id(u)); | |
606 | } | |
607 | ||
2c4104f0 LP |
608 | if ((r = sysv_exec_commands(s)) < 0) |
609 | goto finish; | |
610 | ||
0bc824be LP |
611 | if (!s->sysv_runlevels || chars_intersect("12345", s->sysv_runlevels)) { |
612 | /* If there a runlevels configured for this service | |
613 | * but none of the standard ones, then we assume this | |
614 | * is some special kind of service (which might be | |
615 | * needed for early boot) and don't create any links | |
616 | * to it. */ | |
617 | ||
618 | if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET)) < 0 || | |
619 | (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET)) < 0) | |
620 | goto finish; | |
621 | } | |
0fd030be | 622 | |
80876c20 LP |
623 | /* Special setting for all SysV services */ |
624 | s->valid_no_process = true; | |
625 | ||
e537352b | 626 | u->meta.load_state = UNIT_LOADED; |
23a177ef | 627 | r = 0; |
2c4104f0 LP |
628 | |
629 | finish: | |
630 | ||
631 | if (f) | |
632 | fclose(f); | |
633 | ||
634 | return r; | |
635 | } | |
636 | ||
e537352b | 637 | static int service_load_sysv_name(Service *s, const char *name) { |
2c4104f0 LP |
638 | char **p; |
639 | ||
640 | assert(s); | |
641 | assert(name); | |
642 | ||
643 | STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) { | |
644 | char *path; | |
645 | int r; | |
646 | ||
647 | if (asprintf(&path, "%s/%s", *p, name) < 0) | |
648 | return -ENOMEM; | |
649 | ||
650 | assert(endswith(path, ".service")); | |
651 | path[strlen(path)-8] = 0; | |
652 | ||
e537352b | 653 | r = service_load_sysv_path(s, path); |
2c4104f0 LP |
654 | free(path); |
655 | ||
23a177ef | 656 | if (r < 0) |
2c4104f0 | 657 | return r; |
23a177ef | 658 | |
e537352b | 659 | if ((UNIT(s)->meta.load_state != UNIT_STUB)) |
23a177ef | 660 | break; |
2c4104f0 LP |
661 | } |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
e537352b | 666 | static int service_load_sysv(Service *s) { |
2c4104f0 LP |
667 | const char *t; |
668 | Iterator i; | |
669 | int r; | |
670 | ||
5cb5a6ff LP |
671 | assert(s); |
672 | ||
673 | /* Load service data from SysV init scripts, preferably with | |
674 | * LSB headers ... */ | |
675 | ||
2c4104f0 LP |
676 | if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path)) |
677 | return 0; | |
678 | ||
679 | if ((t = unit_id(UNIT(s)))) | |
e537352b | 680 | if ((r = service_load_sysv_name(s, t)) < 0) |
2c4104f0 LP |
681 | return r; |
682 | ||
e537352b | 683 | if (UNIT(s)->meta.load_state == UNIT_STUB) |
23a177ef | 684 | SET_FOREACH(t, UNIT(s)->meta.names, i) { |
e537352b LP |
685 | if (t == unit_id(UNIT(s))) |
686 | continue; | |
687 | ||
688 | if ((r == service_load_sysv_name(s, t)) < 0) | |
23a177ef LP |
689 | return r; |
690 | ||
e537352b | 691 | if (UNIT(s)->meta.load_state != UNIT_STUB) |
23a177ef LP |
692 | break; |
693 | } | |
2c4104f0 LP |
694 | |
695 | return 0; | |
5cb5a6ff LP |
696 | } |
697 | ||
e537352b | 698 | static void service_init(Unit *u) { |
87f0e418 | 699 | Service *s = SERVICE(u); |
5cb5a6ff | 700 | |
e537352b LP |
701 | assert(u); |
702 | assert(u->meta.load_state == UNIT_STUB); | |
034c6ed7 LP |
703 | |
704 | s->type = 0; | |
705 | s->restart = 0; | |
706 | ||
707 | s->timeout_usec = DEFAULT_TIMEOUT_USEC; | |
708 | s->restart_usec = DEFAULT_RESTART_USEC; | |
709 | ||
710 | exec_context_init(&s->exec_context); | |
711 | ||
acbb0225 | 712 | s->timer_watch.type = WATCH_INVALID; |
034c6ed7 LP |
713 | |
714 | s->state = SERVICE_DEAD; | |
5cb5a6ff | 715 | |
2c4104f0 | 716 | s->sysv_start_priority = -1; |
81a2b7ce LP |
717 | s->permissions_start_only = false; |
718 | s->root_directory_start_only = false; | |
50159e6a LP |
719 | s->valid_no_process = false; |
720 | s->kill_mode = 0; | |
23a177ef | 721 | s->sysv_has_lsb = false; |
50159e6a LP |
722 | s->main_pid = s->control_pid = 0; |
723 | s->main_pid_known = false; | |
724 | s->failure = false; | |
23a177ef | 725 | |
1e2e8133 | 726 | RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5); |
e537352b LP |
727 | } |
728 | ||
243b1432 LP |
729 | static int service_verify(Service *s) { |
730 | assert(s); | |
731 | ||
732 | if (UNIT(s)->meta.load_state != UNIT_LOADED) | |
733 | return 0; | |
734 | ||
735 | if (!s->exec_command[SERVICE_EXEC_START]) { | |
736 | log_error("%s lacks ExecStart setting. Refusing.", unit_id(UNIT(s))); | |
737 | return -EINVAL; | |
738 | } | |
739 | ||
740 | return 0; | |
741 | } | |
742 | ||
e537352b LP |
743 | static int service_load(Unit *u) { |
744 | int r; | |
745 | Service *s = SERVICE(u); | |
746 | ||
747 | assert(s); | |
1e2e8133 | 748 | |
5cb5a6ff | 749 | /* Load a .service file */ |
e537352b | 750 | if ((r = unit_load_fragment(u)) < 0) |
5cb5a6ff LP |
751 | return r; |
752 | ||
bd77d0fc | 753 | /* Load a classic init script as a fallback, if we couldn't find anything */ |
e537352b LP |
754 | if (u->meta.load_state == UNIT_STUB) |
755 | if ((r = service_load_sysv(s)) < 0) | |
23a177ef | 756 | return r; |
d46de8a1 | 757 | |
23a177ef | 758 | /* Still nothing found? Then let's give up */ |
e537352b | 759 | if (u->meta.load_state == UNIT_STUB) |
23a177ef | 760 | return -ENOENT; |
034c6ed7 | 761 | |
23a177ef LP |
762 | /* We were able to load something, then let's add in the |
763 | * dropin directories. */ | |
764 | if ((r = unit_load_dropin(unit_follow_merge(u))) < 0) | |
8e274523 | 765 | return r; |
23a177ef LP |
766 | |
767 | /* This is a new unit? Then let's add in some extras */ | |
e537352b | 768 | if (u->meta.load_state == UNIT_LOADED) { |
23a177ef LP |
769 | if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0) |
770 | return r; | |
771 | ||
772 | if ((r = unit_add_default_cgroup(u)) < 0) | |
773 | return r; | |
774 | ||
775 | if ((r = sysv_chkconfig_order(s)) < 0) | |
776 | return r; | |
8e274523 LP |
777 | } |
778 | ||
243b1432 | 779 | return service_verify(s); |
034c6ed7 LP |
780 | } |
781 | ||
87f0e418 | 782 | static void service_dump(Unit *u, FILE *f, const char *prefix) { |
5cb5a6ff | 783 | |
5cb5a6ff | 784 | ServiceExecCommand c; |
87f0e418 | 785 | Service *s = SERVICE(u); |
47be870b LP |
786 | const char *prefix2; |
787 | char *p2; | |
5cb5a6ff LP |
788 | |
789 | assert(s); | |
790 | ||
47be870b LP |
791 | p2 = strappend(prefix, "\t"); |
792 | prefix2 = p2 ? p2 : prefix; | |
44d8db9e | 793 | |
5cb5a6ff | 794 | fprintf(f, |
81a2b7ce LP |
795 | "%sService State: %s\n" |
796 | "%sPermissionsStartOnly: %s\n" | |
8e274523 | 797 | "%sRootDirectoryStartOnly: %s\n" |
03d6ab85 | 798 | "%sValidNoProcess: %s\n" |
50159e6a | 799 | "%sKillMode: %s\n" |
03d6ab85 | 800 | "%sType: %s\n", |
81a2b7ce LP |
801 | prefix, service_state_to_string(s->state), |
802 | prefix, yes_no(s->permissions_start_only), | |
8e274523 | 803 | prefix, yes_no(s->root_directory_start_only), |
03d6ab85 | 804 | prefix, yes_no(s->valid_no_process), |
50159e6a | 805 | prefix, kill_mode_to_string(s->kill_mode), |
03d6ab85 | 806 | prefix, service_type_to_string(s->type)); |
5cb5a6ff | 807 | |
70123e68 LP |
808 | if (s->control_pid > 0) |
809 | fprintf(f, | |
810 | "%sControl PID: %llu\n", | |
811 | prefix, (unsigned long long) s->control_pid); | |
812 | ||
813 | if (s->main_pid > 0) | |
814 | fprintf(f, | |
815 | "%sMain PID: %llu\n", | |
816 | prefix, (unsigned long long) s->main_pid); | |
817 | ||
034c6ed7 LP |
818 | if (s->pid_file) |
819 | fprintf(f, | |
820 | "%sPIDFile: %s\n", | |
821 | prefix, s->pid_file); | |
822 | ||
5cb5a6ff LP |
823 | exec_context_dump(&s->exec_context, f, prefix); |
824 | ||
e537352b | 825 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { |
5cb5a6ff | 826 | |
44d8db9e LP |
827 | if (!s->exec_command[c]) |
828 | continue; | |
829 | ||
830 | fprintf(f, "%s→ %s:\n", | |
94f04347 | 831 | prefix, service_exec_command_to_string(c)); |
44d8db9e LP |
832 | |
833 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
5cb5a6ff | 834 | } |
44d8db9e | 835 | |
2c4104f0 LP |
836 | if (s->sysv_path) |
837 | fprintf(f, | |
23a177ef LP |
838 | "%sSysV Init Script Path: %s\n" |
839 | "%sSysV Init Script has LSB Header: %s\n", | |
840 | prefix, s->sysv_path, | |
841 | prefix, yes_no(s->sysv_has_lsb)); | |
2c4104f0 LP |
842 | |
843 | if (s->sysv_start_priority >= 0) | |
844 | fprintf(f, | |
23a177ef | 845 | "%sSysVStartPriority: %i\n", |
2c4104f0 LP |
846 | prefix, s->sysv_start_priority); |
847 | ||
8309400a LP |
848 | if (s->sysv_runlevels) |
849 | fprintf(f, "%sSysVRunLevels: %s\n", | |
850 | prefix, s->sysv_runlevels); | |
23a177ef | 851 | |
47be870b | 852 | free(p2); |
5cb5a6ff LP |
853 | } |
854 | ||
034c6ed7 LP |
855 | static int service_load_pid_file(Service *s) { |
856 | char *k; | |
857 | unsigned long p; | |
858 | int r; | |
859 | ||
860 | assert(s); | |
861 | ||
862 | if (s->main_pid_known) | |
863 | return 0; | |
864 | ||
5e94833f LP |
865 | assert(s->main_pid <= 0); |
866 | ||
034c6ed7 LP |
867 | if (!s->pid_file) |
868 | return -ENOENT; | |
869 | ||
870 | if ((r = read_one_line_file(s->pid_file, &k)) < 0) | |
871 | return r; | |
872 | ||
873 | if ((r = safe_atolu(k, &p)) < 0) { | |
874 | free(k); | |
875 | return r; | |
876 | } | |
877 | ||
878 | if ((unsigned long) (pid_t) p != p) | |
879 | return -ERANGE; | |
880 | ||
b8c597d5 LP |
881 | if (kill((pid_t) p, 0) < 0 && errno != EPERM) { |
882 | log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.", | |
883 | (unsigned long long) p, s->pid_file); | |
884 | return -ESRCH; | |
885 | } | |
886 | ||
16f6025e LP |
887 | if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0) |
888 | /* FIXME: we need to do something here */ | |
889 | return r; | |
890 | ||
b8c597d5 | 891 | s->main_pid = (pid_t) p; |
034c6ed7 LP |
892 | s->main_pid_known = true; |
893 | ||
894 | return 0; | |
895 | } | |
896 | ||
3e33402a LP |
897 | static int service_get_sockets(Service *s, Set **_set) { |
898 | Set *set; | |
ceee3d82 LP |
899 | Iterator i; |
900 | char *t; | |
3e33402a | 901 | int r; |
ceee3d82 LP |
902 | |
903 | assert(s); | |
3e33402a LP |
904 | assert(_set); |
905 | ||
906 | /* Collects all Socket objects that belong to this | |
907 | * service. Note that a service might have multiple sockets | |
908 | * via multiple names. */ | |
909 | ||
910 | if (!(set = set_new(NULL, NULL))) | |
911 | return -ENOMEM; | |
ceee3d82 LP |
912 | |
913 | SET_FOREACH(t, UNIT(s)->meta.names, i) { | |
914 | char *k; | |
915 | Unit *p; | |
916 | ||
917 | /* Look for all socket objects that go by any of our | |
918 | * units and collect their fds */ | |
919 | ||
3e33402a LP |
920 | if (!(k = unit_name_change_suffix(t, ".socket"))) { |
921 | r = -ENOMEM; | |
922 | goto fail; | |
923 | } | |
ceee3d82 LP |
924 | |
925 | p = manager_get_unit(UNIT(s)->meta.manager, k); | |
926 | free(k); | |
927 | ||
3e33402a | 928 | if (!p) continue; |
ceee3d82 | 929 | |
3e33402a LP |
930 | if ((r = set_put(set, p)) < 0) |
931 | goto fail; | |
ceee3d82 LP |
932 | } |
933 | ||
3e33402a LP |
934 | *_set = set; |
935 | return 0; | |
936 | ||
937 | fail: | |
938 | set_free(set); | |
939 | return r; | |
940 | } | |
941 | ||
942 | ||
e537352b | 943 | static int service_notify_sockets_dead(Service *s) { |
3e33402a LP |
944 | Iterator i; |
945 | Set *set; | |
47be870b | 946 | Socket *sock; |
3e33402a LP |
947 | int r; |
948 | ||
949 | assert(s); | |
950 | ||
951 | /* Notifies all our sockets when we die */ | |
952 | ||
953 | if ((r = service_get_sockets(s, &set)) < 0) | |
954 | return r; | |
955 | ||
47be870b LP |
956 | SET_FOREACH(sock, set, i) |
957 | socket_notify_service_dead(sock); | |
3e33402a LP |
958 | |
959 | set_free(set); | |
960 | ||
ceee3d82 LP |
961 | return 0; |
962 | } | |
963 | ||
034c6ed7 LP |
964 | static void service_set_state(Service *s, ServiceState state) { |
965 | ServiceState old_state; | |
5cb5a6ff LP |
966 | assert(s); |
967 | ||
034c6ed7 | 968 | old_state = s->state; |
5cb5a6ff | 969 | s->state = state; |
034c6ed7 LP |
970 | |
971 | if (state != SERVICE_START_PRE && | |
972 | state != SERVICE_START && | |
973 | state != SERVICE_START_POST && | |
974 | state != SERVICE_RELOAD && | |
975 | state != SERVICE_STOP && | |
976 | state != SERVICE_STOP_SIGTERM && | |
977 | state != SERVICE_STOP_SIGKILL && | |
978 | state != SERVICE_STOP_POST && | |
979 | state != SERVICE_FINAL_SIGTERM && | |
980 | state != SERVICE_FINAL_SIGKILL && | |
981 | state != SERVICE_AUTO_RESTART) | |
acbb0225 | 982 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
034c6ed7 | 983 | |
7d55e835 LP |
984 | if (state != SERVICE_START && |
985 | state != SERVICE_START_POST && | |
034c6ed7 LP |
986 | state != SERVICE_RUNNING && |
987 | state != SERVICE_RELOAD && | |
988 | state != SERVICE_STOP && | |
989 | state != SERVICE_STOP_SIGTERM && | |
990 | state != SERVICE_STOP_SIGKILL) | |
5e94833f | 991 | service_unwatch_main_pid(s); |
034c6ed7 LP |
992 | |
993 | if (state != SERVICE_START_PRE && | |
994 | state != SERVICE_START && | |
995 | state != SERVICE_START_POST && | |
996 | state != SERVICE_RELOAD && | |
997 | state != SERVICE_STOP && | |
998 | state != SERVICE_STOP_SIGTERM && | |
999 | state != SERVICE_STOP_SIGKILL && | |
1000 | state != SERVICE_STOP_POST && | |
1001 | state != SERVICE_FINAL_SIGTERM && | |
e537352b | 1002 | state != SERVICE_FINAL_SIGKILL) { |
5e94833f | 1003 | service_unwatch_control_pid(s); |
034c6ed7 | 1004 | s->control_command = NULL; |
e537352b | 1005 | } |
034c6ed7 | 1006 | |
ceee3d82 LP |
1007 | if (state == SERVICE_DEAD || |
1008 | state == SERVICE_STOP || | |
1009 | state == SERVICE_STOP_SIGTERM || | |
1010 | state == SERVICE_STOP_SIGKILL || | |
1011 | state == SERVICE_STOP_POST || | |
1012 | state == SERVICE_FINAL_SIGTERM || | |
1013 | state == SERVICE_FINAL_SIGKILL || | |
1014 | state == SERVICE_MAINTAINANCE || | |
1015 | state == SERVICE_AUTO_RESTART) | |
e537352b | 1016 | service_notify_sockets_dead(s); |
ceee3d82 | 1017 | |
e537352b LP |
1018 | if (old_state != state) |
1019 | log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state)); | |
acbb0225 LP |
1020 | |
1021 | unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]); | |
034c6ed7 LP |
1022 | } |
1023 | ||
44d8db9e LP |
1024 | static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) { |
1025 | Iterator i; | |
1026 | int r; | |
1027 | int *rfds = NULL; | |
1028 | unsigned rn_fds = 0; | |
3e33402a | 1029 | Set *set; |
47be870b | 1030 | Socket *sock; |
44d8db9e LP |
1031 | |
1032 | assert(s); | |
1033 | assert(fds); | |
1034 | assert(n_fds); | |
1035 | ||
3e33402a LP |
1036 | if ((r = service_get_sockets(s, &set)) < 0) |
1037 | return r; | |
1038 | ||
47be870b | 1039 | SET_FOREACH(sock, set, i) { |
44d8db9e LP |
1040 | int *cfds; |
1041 | unsigned cn_fds; | |
1042 | ||
47be870b | 1043 | if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0) |
44d8db9e LP |
1044 | goto fail; |
1045 | ||
1046 | if (!cfds) | |
1047 | continue; | |
1048 | ||
1049 | if (!rfds) { | |
1050 | rfds = cfds; | |
1051 | rn_fds = cn_fds; | |
1052 | } else { | |
1053 | int *t; | |
1054 | ||
1055 | if (!(t = new(int, rn_fds+cn_fds))) { | |
1056 | free(cfds); | |
1057 | r = -ENOMEM; | |
1058 | goto fail; | |
1059 | } | |
1060 | ||
1061 | memcpy(t, rfds, rn_fds); | |
1062 | memcpy(t+rn_fds, cfds, cn_fds); | |
1063 | free(rfds); | |
1064 | free(cfds); | |
1065 | ||
1066 | rfds = t; | |
1067 | rn_fds = rn_fds+cn_fds; | |
1068 | } | |
1069 | } | |
1070 | ||
1071 | *fds = rfds; | |
1072 | *n_fds = rn_fds; | |
3e33402a LP |
1073 | |
1074 | set_free(set); | |
1075 | ||
44d8db9e LP |
1076 | return 0; |
1077 | ||
1078 | fail: | |
3e33402a | 1079 | set_free(set); |
44d8db9e | 1080 | free(rfds); |
3e33402a | 1081 | |
44d8db9e LP |
1082 | return r; |
1083 | } | |
1084 | ||
81a2b7ce LP |
1085 | static int service_spawn( |
1086 | Service *s, | |
1087 | ExecCommand *c, | |
1088 | bool timeout, | |
1089 | bool pass_fds, | |
1090 | bool apply_permissions, | |
1091 | bool apply_chroot, | |
1092 | pid_t *_pid) { | |
1093 | ||
034c6ed7 LP |
1094 | pid_t pid; |
1095 | int r; | |
44d8db9e LP |
1096 | int *fds = NULL; |
1097 | unsigned n_fds = 0; | |
034c6ed7 LP |
1098 | |
1099 | assert(s); | |
1100 | assert(c); | |
1101 | assert(_pid); | |
1102 | ||
44d8db9e LP |
1103 | if (pass_fds) |
1104 | if ((r = service_collect_fds(s, &fds, &n_fds)) < 0) | |
1105 | goto fail; | |
1106 | ||
034c6ed7 | 1107 | if (timeout) { |
acbb0225 | 1108 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) |
034c6ed7 LP |
1109 | goto fail; |
1110 | } else | |
acbb0225 | 1111 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
034c6ed7 | 1112 | |
81a2b7ce LP |
1113 | if ((r = exec_spawn(c, |
1114 | &s->exec_context, | |
1115 | fds, n_fds, | |
1116 | apply_permissions, | |
1117 | apply_chroot, | |
80876c20 | 1118 | UNIT(s)->meta.manager->confirm_spawn, |
8e274523 | 1119 | UNIT(s)->meta.cgroup_bondings, |
81a2b7ce | 1120 | &pid)) < 0) |
034c6ed7 LP |
1121 | goto fail; |
1122 | ||
87f0e418 | 1123 | if ((r = unit_watch_pid(UNIT(s), pid)) < 0) |
034c6ed7 LP |
1124 | /* FIXME: we need to do something here */ |
1125 | goto fail; | |
1126 | ||
44d8db9e | 1127 | free(fds); |
034c6ed7 LP |
1128 | *_pid = pid; |
1129 | ||
5cb5a6ff | 1130 | return 0; |
034c6ed7 LP |
1131 | |
1132 | fail: | |
44d8db9e LP |
1133 | free(fds); |
1134 | ||
034c6ed7 | 1135 | if (timeout) |
acbb0225 | 1136 | unit_unwatch_timer(UNIT(s), &s->timer_watch); |
034c6ed7 LP |
1137 | |
1138 | return r; | |
1139 | } | |
1140 | ||
80876c20 LP |
1141 | static int main_pid_good(Service *s) { |
1142 | assert(s); | |
1143 | ||
1144 | /* Returns 0 if the pid is dead, 1 if it is good, -1 if we | |
1145 | * don't know */ | |
1146 | ||
1147 | /* If we know the pid file, then lets just check if it is | |
1148 | * still valid */ | |
1149 | if (s->main_pid_known) | |
1150 | return s->main_pid > 0; | |
1151 | ||
1152 | /* We don't know the pid */ | |
1153 | return -EAGAIN; | |
1154 | } | |
1155 | ||
1156 | static int control_pid_good(Service *s) { | |
1157 | assert(s); | |
1158 | ||
1159 | return s->control_pid > 0; | |
1160 | } | |
1161 | ||
1162 | static int cgroup_good(Service *s) { | |
1163 | int r; | |
1164 | ||
1165 | assert(s); | |
1166 | ||
1167 | if (s->valid_no_process) | |
1168 | return -EAGAIN; | |
1169 | ||
1170 | if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0) | |
1171 | return r; | |
1172 | ||
1173 | return !r; | |
1174 | } | |
1175 | ||
034c6ed7 LP |
1176 | static void service_enter_dead(Service *s, bool success, bool allow_restart) { |
1177 | int r; | |
1178 | assert(s); | |
1179 | ||
1180 | if (!success) | |
1181 | s->failure = true; | |
1182 | ||
1183 | if (allow_restart && | |
1184 | (s->restart == SERVICE_RESTART_ALWAYS || | |
1185 | (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) { | |
1186 | ||
acbb0225 | 1187 | if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0) |
034c6ed7 LP |
1188 | goto fail; |
1189 | ||
1190 | service_set_state(s, SERVICE_AUTO_RESTART); | |
1191 | } else | |
1192 | service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD); | |
1193 | ||
1194 | return; | |
1195 | ||
1196 | fail: | |
87f0e418 | 1197 | log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r)); |
034c6ed7 LP |
1198 | service_enter_dead(s, false, false); |
1199 | } | |
1200 | ||
1201 | static void service_enter_signal(Service *s, ServiceState state, bool success); | |
1202 | ||
1203 | static void service_enter_stop_post(Service *s, bool success) { | |
1204 | int r; | |
1205 | assert(s); | |
1206 | ||
1207 | if (!success) | |
1208 | s->failure = true; | |
1209 | ||
5e94833f LP |
1210 | service_unwatch_control_pid(s); |
1211 | ||
80876c20 | 1212 | if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) { |
81a2b7ce LP |
1213 | if ((r = service_spawn(s, |
1214 | s->control_command, | |
1215 | true, | |
1216 | false, | |
1217 | !s->permissions_start_only, | |
1218 | !s->root_directory_start_only, | |
1219 | &s->control_pid)) < 0) | |
034c6ed7 LP |
1220 | goto fail; |
1221 | ||
d6ea93e3 | 1222 | |
80876c20 LP |
1223 | service_set_state(s, SERVICE_STOP_POST); |
1224 | } else | |
1225 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, true); | |
034c6ed7 LP |
1226 | |
1227 | return; | |
1228 | ||
1229 | fail: | |
80876c20 | 1230 | log_warning("%s failed to run stop-post executable: %s", unit_id(UNIT(s)), strerror(-r)); |
034c6ed7 LP |
1231 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
1232 | } | |
1233 | ||
1234 | static void service_enter_signal(Service *s, ServiceState state, bool success) { | |
1235 | int r; | |
1236 | bool sent = false; | |
1237 | ||
1238 | assert(s); | |
1239 | ||
1240 | if (!success) | |
1241 | s->failure = true; | |
1242 | ||
80876c20 LP |
1243 | if (s->kill_mode != KILL_NONE) { |
1244 | int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL; | |
034c6ed7 | 1245 | |
50159e6a | 1246 | if (s->kill_mode == KILL_CONTROL_GROUP) { |
034c6ed7 | 1247 | |
50159e6a LP |
1248 | if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) { |
1249 | if (r != -EAGAIN && r != -ESRCH) | |
1250 | goto fail; | |
1251 | } else | |
034c6ed7 LP |
1252 | sent = true; |
1253 | } | |
1254 | ||
50159e6a LP |
1255 | if (!sent) { |
1256 | r = 0; | |
80876c20 | 1257 | |
50159e6a LP |
1258 | if (s->main_pid > 0) { |
1259 | if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH) | |
1260 | r = -errno; | |
1261 | else | |
1262 | sent = true; | |
1263 | } | |
1264 | ||
1265 | if (s->control_pid > 0) { | |
1266 | if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH) | |
1267 | r = -errno; | |
1268 | else | |
1269 | sent = true; | |
1270 | } | |
1271 | ||
1272 | if (r < 0) | |
1273 | goto fail; | |
1274 | } | |
d6ea93e3 | 1275 | } |
034c6ed7 | 1276 | |
80876c20 LP |
1277 | if (sent) { |
1278 | if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0) | |
1279 | goto fail; | |
d6ea93e3 | 1280 | |
80876c20 LP |
1281 | service_set_state(s, state); |
1282 | } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) | |
1283 | service_enter_stop_post(s, true); | |
1284 | else | |
034c6ed7 LP |
1285 | service_enter_dead(s, true, true); |
1286 | ||
1287 | return; | |
1288 | ||
1289 | fail: | |
87f0e418 | 1290 | log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r)); |
034c6ed7 | 1291 | |
80876c20 | 1292 | if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) |
034c6ed7 LP |
1293 | service_enter_stop_post(s, false); |
1294 | else | |
1295 | service_enter_dead(s, false, true); | |
1296 | } | |
1297 | ||
1298 | static void service_enter_stop(Service *s, bool success) { | |
1299 | int r; | |
1300 | assert(s); | |
1301 | ||
1302 | if (!success) | |
1303 | s->failure = true; | |
1304 | ||
5e94833f LP |
1305 | service_unwatch_control_pid(s); |
1306 | ||
80876c20 | 1307 | if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) { |
81a2b7ce LP |
1308 | if ((r = service_spawn(s, |
1309 | s->control_command, | |
1310 | true, | |
1311 | false, | |
1312 | !s->permissions_start_only, | |
1313 | !s->root_directory_start_only, | |
1314 | &s->control_pid)) < 0) | |
034c6ed7 LP |
1315 | goto fail; |
1316 | ||
80876c20 LP |
1317 | service_set_state(s, SERVICE_STOP); |
1318 | } else | |
034c6ed7 LP |
1319 | service_enter_signal(s, SERVICE_STOP_SIGTERM, true); |
1320 | ||
1321 | return; | |
1322 | ||
1323 | fail: | |
87f0e418 | 1324 | log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r)); |
034c6ed7 LP |
1325 | service_enter_signal(s, SERVICE_STOP_SIGTERM, false); |
1326 | } | |
1327 | ||
80876c20 LP |
1328 | static void service_enter_running(Service *s, bool success) { |
1329 | assert(s); | |
1330 | ||
1331 | if (!success) | |
1332 | s->failure = true; | |
1333 | ||
1334 | if (main_pid_good(s) != 0 && cgroup_good(s) != 0) | |
1335 | service_set_state(s, SERVICE_RUNNING); | |
1336 | else if (s->valid_no_process) | |
1337 | service_set_state(s, SERVICE_EXITED); | |
1338 | else | |
1339 | service_enter_stop(s, true); | |
1340 | } | |
1341 | ||
034c6ed7 LP |
1342 | static void service_enter_start_post(Service *s) { |
1343 | int r; | |
1344 | assert(s); | |
1345 | ||
5e94833f LP |
1346 | service_unwatch_control_pid(s); |
1347 | ||
80876c20 | 1348 | if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) { |
81a2b7ce LP |
1349 | if ((r = service_spawn(s, |
1350 | s->control_command, | |
1351 | true, | |
1352 | false, | |
1353 | !s->permissions_start_only, | |
1354 | !s->root_directory_start_only, | |
1355 | &s->control_pid)) < 0) | |
034c6ed7 LP |
1356 | goto fail; |
1357 | ||
d6ea93e3 | 1358 | |
80876c20 LP |
1359 | service_set_state(s, SERVICE_START_POST); |
1360 | } else | |
1361 | service_enter_running(s, true); | |
034c6ed7 LP |
1362 | |
1363 | return; | |
1364 | ||
1365 | fail: | |
87f0e418 | 1366 | log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r)); |
034c6ed7 LP |
1367 | service_enter_stop(s, false); |
1368 | } | |
1369 | ||
1370 | static void service_enter_start(Service *s) { | |
1371 | pid_t pid; | |
1372 | int r; | |
1373 | ||
1374 | assert(s); | |
1375 | ||
1376 | assert(s->exec_command[SERVICE_EXEC_START]); | |
1377 | assert(!s->exec_command[SERVICE_EXEC_START]->command_next); | |
1378 | ||
80876c20 LP |
1379 | if (s->type == SERVICE_FORKING) |
1380 | service_unwatch_control_pid(s); | |
1381 | else | |
1382 | service_unwatch_main_pid(s); | |
1383 | ||
81a2b7ce LP |
1384 | if ((r = service_spawn(s, |
1385 | s->exec_command[SERVICE_EXEC_START], | |
1386 | s->type == SERVICE_FORKING, | |
1387 | true, | |
1388 | true, | |
1389 | true, | |
1390 | &pid)) < 0) | |
034c6ed7 LP |
1391 | goto fail; |
1392 | ||
1393 | if (s->type == SERVICE_SIMPLE) { | |
1394 | /* For simple services we immediately start | |
1395 | * the START_POST binaries. */ | |
1396 | ||
1397 | s->main_pid = pid; | |
1398 | s->main_pid_known = true; | |
80876c20 | 1399 | |
034c6ed7 LP |
1400 | service_enter_start_post(s); |
1401 | ||
1402 | } else if (s->type == SERVICE_FORKING) { | |
1403 | ||
1404 | /* For forking services we wait until the start | |
1405 | * process exited. */ | |
1406 | ||
1407 | s->control_pid = pid; | |
80876c20 | 1408 | |
034c6ed7 | 1409 | s->control_command = s->exec_command[SERVICE_EXEC_START]; |
80876c20 LP |
1410 | service_set_state(s, SERVICE_START); |
1411 | ||
7d55e835 LP |
1412 | } else if (s->type == SERVICE_FINISH) { |
1413 | ||
1414 | /* For finishing services we wait until the start | |
1415 | * process exited, too, but it is our main process. */ | |
1416 | ||
1417 | s->main_pid = pid; | |
5e94833f | 1418 | s->main_pid_known = true; |
80876c20 | 1419 | |
7d55e835 | 1420 | s->control_command = s->exec_command[SERVICE_EXEC_START]; |
80876c20 | 1421 | service_set_state(s, SERVICE_START); |
034c6ed7 LP |
1422 | } else |
1423 | assert_not_reached("Unknown service type"); | |
1424 | ||
1425 | return; | |
1426 | ||
1427 | fail: | |
87f0e418 | 1428 | log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r)); |
80876c20 | 1429 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
034c6ed7 LP |
1430 | } |
1431 | ||
1432 | static void service_enter_start_pre(Service *s) { | |
1433 | int r; | |
1434 | ||
1435 | assert(s); | |
1436 | ||
5e94833f LP |
1437 | service_unwatch_control_pid(s); |
1438 | ||
80876c20 | 1439 | if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) { |
81a2b7ce LP |
1440 | if ((r = service_spawn(s, |
1441 | s->control_command, | |
1442 | true, | |
1443 | false, | |
1444 | !s->permissions_start_only, | |
1445 | !s->root_directory_start_only, | |
1446 | &s->control_pid)) < 0) | |
034c6ed7 LP |
1447 | goto fail; |
1448 | ||
80876c20 LP |
1449 | service_set_state(s, SERVICE_START_PRE); |
1450 | } else | |
034c6ed7 LP |
1451 | service_enter_start(s); |
1452 | ||
1453 | return; | |
1454 | ||
1455 | fail: | |
87f0e418 | 1456 | log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r)); |
034c6ed7 LP |
1457 | service_enter_dead(s, false, true); |
1458 | } | |
1459 | ||
1460 | static void service_enter_restart(Service *s) { | |
1461 | int r; | |
1462 | assert(s); | |
1463 | ||
87f0e418 | 1464 | if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0) |
034c6ed7 LP |
1465 | goto fail; |
1466 | ||
87f0e418 | 1467 | log_debug("%s scheduled restart job.", unit_id(UNIT(s))); |
034c6ed7 LP |
1468 | service_enter_dead(s, true, false); |
1469 | return; | |
1470 | ||
1471 | fail: | |
1472 | ||
87f0e418 | 1473 | log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r)); |
034c6ed7 LP |
1474 | service_enter_dead(s, false, false); |
1475 | } | |
1476 | ||
1477 | static void service_enter_reload(Service *s) { | |
1478 | int r; | |
1479 | ||
1480 | assert(s); | |
1481 | ||
5e94833f LP |
1482 | service_unwatch_control_pid(s); |
1483 | ||
80876c20 | 1484 | if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) { |
81a2b7ce LP |
1485 | if ((r = service_spawn(s, |
1486 | s->control_command, | |
1487 | true, | |
1488 | false, | |
1489 | !s->permissions_start_only, | |
1490 | !s->root_directory_start_only, | |
1491 | &s->control_pid)) < 0) | |
034c6ed7 LP |
1492 | goto fail; |
1493 | ||
80876c20 LP |
1494 | service_set_state(s, SERVICE_RELOAD); |
1495 | } else | |
1496 | service_enter_running(s, true); | |
034c6ed7 LP |
1497 | |
1498 | return; | |
1499 | ||
1500 | fail: | |
87f0e418 | 1501 | log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r)); |
034c6ed7 LP |
1502 | service_enter_stop(s, false); |
1503 | } | |
1504 | ||
1505 | static void service_run_next(Service *s, bool success) { | |
1506 | int r; | |
1507 | ||
1508 | assert(s); | |
1509 | assert(s->control_command); | |
1510 | assert(s->control_command->command_next); | |
1511 | ||
1512 | if (!success) | |
1513 | s->failure = true; | |
1514 | ||
1515 | s->control_command = s->control_command->command_next; | |
1516 | ||
5e94833f LP |
1517 | service_unwatch_control_pid(s); |
1518 | ||
81a2b7ce LP |
1519 | if ((r = service_spawn(s, |
1520 | s->control_command, | |
1521 | true, | |
1522 | false, | |
1523 | !s->permissions_start_only, | |
1524 | !s->root_directory_start_only, | |
1525 | &s->control_pid)) < 0) | |
034c6ed7 LP |
1526 | goto fail; |
1527 | ||
1528 | return; | |
1529 | ||
1530 | fail: | |
87f0e418 | 1531 | log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r)); |
034c6ed7 | 1532 | |
80876c20 LP |
1533 | if (s->state == SERVICE_START_PRE) |
1534 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); | |
1535 | else if (s->state == SERVICE_STOP) | |
1536 | service_enter_signal(s, SERVICE_STOP_SIGTERM, false); | |
034c6ed7 LP |
1537 | else if (s->state == SERVICE_STOP_POST) |
1538 | service_enter_dead(s, false, true); | |
1539 | else | |
1540 | service_enter_stop(s, false); | |
5cb5a6ff LP |
1541 | } |
1542 | ||
87f0e418 LP |
1543 | static int service_start(Unit *u) { |
1544 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
1545 | |
1546 | assert(s); | |
1547 | ||
034c6ed7 LP |
1548 | /* We cannot fulfill this request right now, try again later |
1549 | * please! */ | |
1550 | if (s->state == SERVICE_STOP || | |
1551 | s->state == SERVICE_STOP_SIGTERM || | |
1552 | s->state == SERVICE_STOP_SIGKILL || | |
1553 | s->state == SERVICE_STOP_POST || | |
1554 | s->state == SERVICE_FINAL_SIGTERM || | |
1555 | s->state == SERVICE_FINAL_SIGKILL) | |
5cb5a6ff LP |
1556 | return -EAGAIN; |
1557 | ||
034c6ed7 LP |
1558 | /* Already on it! */ |
1559 | if (s->state == SERVICE_START_PRE || | |
1560 | s->state == SERVICE_START || | |
1561 | s->state == SERVICE_START_POST) | |
1562 | return 0; | |
1563 | ||
1564 | assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART); | |
5cb5a6ff | 1565 | |
1e2e8133 LP |
1566 | /* Make sure we don't enter a busy loop of some kind. */ |
1567 | if (!ratelimit_test(&s->ratelimit)) { | |
1568 | log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u)); | |
1569 | return -EAGAIN; | |
1570 | } | |
1571 | ||
034c6ed7 LP |
1572 | s->failure = false; |
1573 | s->main_pid_known = false; | |
1574 | ||
1575 | service_enter_start_pre(s); | |
1576 | return 0; | |
5cb5a6ff LP |
1577 | } |
1578 | ||
87f0e418 LP |
1579 | static int service_stop(Unit *u) { |
1580 | Service *s = SERVICE(u); | |
5cb5a6ff LP |
1581 | |
1582 | assert(s); | |
1583 | ||
e537352b | 1584 | /* Cannot do this now */ |
034c6ed7 LP |
1585 | if (s->state == SERVICE_START_PRE || |
1586 | s->state == SERVICE_START || | |
1587 | s->state == SERVICE_START_POST || | |
1588 | s->state == SERVICE_RELOAD) | |
1589 | return -EAGAIN; | |
1590 | ||
e537352b LP |
1591 | /* Already on it */ |
1592 | if (s->state == SERVICE_STOP || | |
1593 | s->state == SERVICE_STOP_SIGTERM || | |
1594 | s->state == SERVICE_STOP_SIGKILL || | |
1595 | s->state == SERVICE_STOP_POST || | |
1596 | s->state == SERVICE_FINAL_SIGTERM || | |
1597 | s->state == SERVICE_FINAL_SIGKILL) | |
1598 | return 0; | |
1599 | ||
034c6ed7 LP |
1600 | if (s->state == SERVICE_AUTO_RESTART) { |
1601 | service_set_state(s, SERVICE_DEAD); | |
1602 | return 0; | |
1603 | } | |
1604 | ||
80876c20 | 1605 | assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED); |
5cb5a6ff | 1606 | |
034c6ed7 | 1607 | service_enter_stop(s, true); |
5cb5a6ff LP |
1608 | return 0; |
1609 | } | |
1610 | ||
87f0e418 LP |
1611 | static int service_reload(Unit *u) { |
1612 | Service *s = SERVICE(u); | |
034c6ed7 LP |
1613 | |
1614 | assert(s); | |
1615 | ||
80876c20 | 1616 | assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED); |
034c6ed7 LP |
1617 | |
1618 | service_enter_reload(s); | |
5cb5a6ff LP |
1619 | return 0; |
1620 | } | |
1621 | ||
87f0e418 LP |
1622 | static bool service_can_reload(Unit *u) { |
1623 | Service *s = SERVICE(u); | |
034c6ed7 LP |
1624 | |
1625 | assert(s); | |
1626 | ||
1627 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
1628 | } | |
1629 | ||
87f0e418 LP |
1630 | static UnitActiveState service_active_state(Unit *u) { |
1631 | assert(u); | |
5cb5a6ff | 1632 | |
acbb0225 | 1633 | return state_translation_table[SERVICE(u)->state]; |
034c6ed7 LP |
1634 | } |
1635 | ||
87f0e418 LP |
1636 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { |
1637 | Service *s = SERVICE(u); | |
034c6ed7 | 1638 | bool success; |
5cb5a6ff LP |
1639 | |
1640 | assert(s); | |
034c6ed7 LP |
1641 | assert(pid >= 0); |
1642 | ||
bd982a8b | 1643 | success = code == CLD_EXITED && status == 0; |
034c6ed7 LP |
1644 | s->failure = s->failure || !success; |
1645 | ||
1646 | if (s->main_pid == pid) { | |
1647 | ||
1648 | exec_status_fill(&s->main_exec_status, pid, code, status); | |
1649 | s->main_pid = 0; | |
1650 | ||
7d55e835 | 1651 | if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) { |
034c6ed7 LP |
1652 | assert(s->exec_command[SERVICE_EXEC_START]); |
1653 | s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status; | |
1654 | } | |
1655 | ||
50159e6a | 1656 | log_debug("%s: main process exited, code=%s, status=%i", unit_id(u), sigchld_code_to_string(code), status); |
034c6ed7 LP |
1657 | |
1658 | /* The service exited, so the service is officially | |
1659 | * gone. */ | |
1660 | ||
1661 | switch (s->state) { | |
1662 | ||
1663 | case SERVICE_START_POST: | |
1664 | case SERVICE_RELOAD: | |
1665 | case SERVICE_STOP: | |
1666 | /* Need to wait until the operation is | |
1667 | * done */ | |
1668 | break; | |
1669 | ||
7d55e835 LP |
1670 | case SERVICE_START: |
1671 | assert(s->type == SERVICE_FINISH); | |
1672 | ||
1673 | /* This was our main goal, so let's go on */ | |
1674 | if (success) | |
1675 | service_enter_start_post(s); | |
1676 | else | |
80876c20 | 1677 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
7d55e835 LP |
1678 | break; |
1679 | ||
034c6ed7 | 1680 | case SERVICE_RUNNING: |
80876c20 | 1681 | service_enter_running(s, success); |
034c6ed7 LP |
1682 | break; |
1683 | ||
1684 | case SERVICE_STOP_SIGTERM: | |
1685 | case SERVICE_STOP_SIGKILL: | |
1686 | ||
1687 | if (!control_pid_good(s)) | |
1688 | service_enter_stop_post(s, success); | |
5cb5a6ff | 1689 | |
034c6ed7 LP |
1690 | /* If there is still a control process, wait for that first */ |
1691 | break; | |
5cb5a6ff | 1692 | |
034c6ed7 LP |
1693 | default: |
1694 | assert_not_reached("Uh, main process died at wrong time."); | |
1695 | } | |
5cb5a6ff | 1696 | |
034c6ed7 LP |
1697 | } else if (s->control_pid == pid) { |
1698 | assert(s->control_command); | |
1699 | ||
1700 | exec_status_fill(&s->control_command->exec_status, pid, code, status); | |
1701 | s->control_pid = 0; | |
1702 | ||
94f04347 | 1703 | log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status); |
034c6ed7 LP |
1704 | |
1705 | /* If we are shutting things down anyway we | |
1706 | * don't care about failing commands. */ | |
1707 | ||
80876c20 | 1708 | if (s->control_command->command_next && success) { |
034c6ed7 LP |
1709 | |
1710 | /* There is another command to * | |
1711 | * execute, so let's do that. */ | |
1712 | ||
80876c20 | 1713 | log_debug("%s running next command for state %s", unit_id(u), service_state_to_string(s->state)); |
034c6ed7 LP |
1714 | service_run_next(s, success); |
1715 | ||
80876c20 | 1716 | } else { |
034c6ed7 LP |
1717 | /* No further commands for this step, so let's |
1718 | * figure out what to do next */ | |
1719 | ||
94f04347 | 1720 | log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state)); |
bd982a8b | 1721 | |
034c6ed7 LP |
1722 | switch (s->state) { |
1723 | ||
1724 | case SERVICE_START_PRE: | |
1725 | if (success) | |
1726 | service_enter_start(s); | |
1727 | else | |
80876c20 | 1728 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
034c6ed7 LP |
1729 | break; |
1730 | ||
1731 | case SERVICE_START: | |
1732 | assert(s->type == SERVICE_FORKING); | |
1733 | ||
1734 | /* Let's try to load the pid | |
1735 | * file here if we can. We | |
1736 | * ignore the return value, | |
1737 | * since the PID file might | |
1738 | * actually be created by a | |
1739 | * START_POST script */ | |
1740 | ||
1741 | if (success) { | |
1742 | if (s->pid_file) | |
1743 | service_load_pid_file(s); | |
1744 | ||
1745 | service_enter_start_post(s); | |
1746 | } else | |
80876c20 | 1747 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
034c6ed7 LP |
1748 | |
1749 | break; | |
1750 | ||
1751 | case SERVICE_START_POST: | |
1752 | if (success && s->pid_file && !s->main_pid_known) { | |
1753 | int r; | |
1754 | ||
1755 | /* Hmm, let's see if we can | |
1756 | * load the pid now after the | |
1757 | * start-post scripts got | |
1758 | * executed. */ | |
1759 | ||
1760 | if ((r = service_load_pid_file(s)) < 0) | |
87f0e418 | 1761 | log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r)); |
034c6ed7 LP |
1762 | } |
1763 | ||
1764 | /* Fall through */ | |
1765 | ||
1766 | case SERVICE_RELOAD: | |
80876c20 LP |
1767 | if (success) |
1768 | service_enter_running(s, true); | |
1769 | else | |
034c6ed7 LP |
1770 | service_enter_stop(s, false); |
1771 | ||
1772 | break; | |
1773 | ||
1774 | case SERVICE_STOP: | |
80876c20 | 1775 | service_enter_signal(s, SERVICE_STOP_SIGTERM, success); |
034c6ed7 LP |
1776 | break; |
1777 | ||
1778 | case SERVICE_STOP_SIGTERM: | |
1779 | case SERVICE_STOP_SIGKILL: | |
1780 | if (main_pid_good(s) <= 0) | |
1781 | service_enter_stop_post(s, success); | |
1782 | ||
1783 | /* If there is still a service | |
1784 | * process around, wait until | |
1785 | * that one quit, too */ | |
1786 | break; | |
1787 | ||
1788 | case SERVICE_STOP_POST: | |
1789 | case SERVICE_FINAL_SIGTERM: | |
1790 | case SERVICE_FINAL_SIGKILL: | |
1791 | service_enter_dead(s, success, true); | |
1792 | break; | |
1793 | ||
1794 | default: | |
1795 | assert_not_reached("Uh, control process died at wrong time."); | |
1796 | } | |
1797 | } | |
1798 | } else | |
1799 | assert_not_reached("Got SIGCHLD for unkown PID"); | |
1800 | } | |
1801 | ||
acbb0225 | 1802 | static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) { |
87f0e418 | 1803 | Service *s = SERVICE(u); |
034c6ed7 LP |
1804 | |
1805 | assert(s); | |
1806 | assert(elapsed == 1); | |
1807 | ||
acbb0225 | 1808 | assert(w == &s->timer_watch); |
034c6ed7 LP |
1809 | |
1810 | switch (s->state) { | |
1811 | ||
1812 | case SERVICE_START_PRE: | |
1813 | case SERVICE_START: | |
80876c20 LP |
1814 | log_warning("%s operation timed out. Terminating.", unit_id(u)); |
1815 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); | |
1816 | break; | |
1817 | ||
034c6ed7 LP |
1818 | case SERVICE_START_POST: |
1819 | case SERVICE_RELOAD: | |
87f0e418 | 1820 | log_warning("%s operation timed out. Stopping.", unit_id(u)); |
034c6ed7 LP |
1821 | service_enter_stop(s, false); |
1822 | break; | |
1823 | ||
1824 | case SERVICE_STOP: | |
87f0e418 | 1825 | log_warning("%s stopping timed out. Terminating.", unit_id(u)); |
034c6ed7 LP |
1826 | service_enter_signal(s, SERVICE_STOP_SIGTERM, false); |
1827 | break; | |
1828 | ||
1829 | case SERVICE_STOP_SIGTERM: | |
87f0e418 | 1830 | log_warning("%s stopping timed out. Killing.", unit_id(u)); |
034c6ed7 LP |
1831 | service_enter_signal(s, SERVICE_STOP_SIGKILL, false); |
1832 | break; | |
1833 | ||
1834 | case SERVICE_STOP_SIGKILL: | |
1835 | /* Uh, wie sent a SIGKILL and it is still not gone? | |
1836 | * Must be something we cannot kill, so let's just be | |
1837 | * weirded out and continue */ | |
1838 | ||
87f0e418 | 1839 | log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u)); |
034c6ed7 LP |
1840 | service_enter_stop_post(s, false); |
1841 | break; | |
1842 | ||
1843 | case SERVICE_STOP_POST: | |
87f0e418 | 1844 | log_warning("%s stopping timed out (2). Terminating.", unit_id(u)); |
034c6ed7 LP |
1845 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); |
1846 | break; | |
1847 | ||
1848 | case SERVICE_FINAL_SIGTERM: | |
87f0e418 | 1849 | log_warning("%s stopping timed out (2). Killing.", unit_id(u)); |
034c6ed7 LP |
1850 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, false); |
1851 | break; | |
1852 | ||
1853 | case SERVICE_FINAL_SIGKILL: | |
87f0e418 | 1854 | log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u)); |
034c6ed7 LP |
1855 | service_enter_dead(s, false, true); |
1856 | break; | |
1857 | ||
1858 | case SERVICE_AUTO_RESTART: | |
87f0e418 | 1859 | log_debug("%s holdoff time over, scheduling restart.", unit_id(u)); |
034c6ed7 LP |
1860 | service_enter_restart(s); |
1861 | break; | |
1862 | ||
1863 | default: | |
1864 | assert_not_reached("Timeout at wrong time."); | |
1865 | } | |
5cb5a6ff LP |
1866 | } |
1867 | ||
8e274523 LP |
1868 | static void service_cgroup_notify_event(Unit *u) { |
1869 | Service *s = SERVICE(u); | |
1870 | ||
1871 | assert(u); | |
1872 | ||
1873 | log_debug("%s: cgroup is empty", unit_id(u)); | |
1874 | ||
1875 | switch (s->state) { | |
1876 | ||
1877 | /* Waiting for SIGCHLD is usually more interesting, | |
1878 | * because it includes return codes/signals. Which is | |
1879 | * why we ignore the cgroup events for most cases, | |
1880 | * except when we don't know pid which to expect the | |
1881 | * SIGCHLD for. */ | |
1882 | ||
1883 | case SERVICE_RUNNING: | |
80876c20 | 1884 | service_enter_running(s, true); |
8e274523 LP |
1885 | break; |
1886 | ||
1887 | default: | |
1888 | ; | |
1889 | } | |
1890 | } | |
1891 | ||
2c4104f0 | 1892 | static int service_enumerate(Manager *m) { |
2c4104f0 LP |
1893 | char **p; |
1894 | unsigned i; | |
1895 | DIR *d = NULL; | |
1896 | char *path = NULL, *fpath = NULL, *name = NULL; | |
1897 | int r; | |
1898 | ||
1899 | assert(m); | |
1900 | ||
5e177ece | 1901 | STRV_FOREACH(p, m->sysvrcnd_path) |
23a177ef | 1902 | for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) { |
2c4104f0 LP |
1903 | struct dirent *de; |
1904 | ||
1905 | free(path); | |
1906 | path = NULL; | |
23a177ef | 1907 | if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0) { |
2c4104f0 LP |
1908 | r = -ENOMEM; |
1909 | goto finish; | |
1910 | } | |
1911 | ||
1912 | if (d) | |
1913 | closedir(d); | |
1914 | ||
1915 | if (!(d = opendir(path))) { | |
1916 | if (errno != ENOENT) | |
1917 | log_warning("opendir() failed on %s: %s", path, strerror(errno)); | |
1918 | ||
1919 | continue; | |
1920 | } | |
1921 | ||
1922 | while ((de = readdir(d))) { | |
1923 | Unit *runlevel, *service; | |
1924 | ||
1925 | if (ignore_file(de->d_name)) | |
1926 | continue; | |
1927 | ||
1928 | if (de->d_name[0] != 'S' && de->d_name[0] != 'K') | |
1929 | continue; | |
1930 | ||
1931 | if (strlen(de->d_name) < 4) | |
1932 | continue; | |
1933 | ||
1934 | free(fpath); | |
1935 | fpath = NULL; | |
23a177ef | 1936 | if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i], de->d_name) < 0) { |
2c4104f0 LP |
1937 | r = -ENOMEM; |
1938 | goto finish; | |
1939 | } | |
1940 | ||
1941 | if (access(fpath, X_OK) < 0) { | |
1942 | ||
1943 | if (errno != ENOENT) | |
1944 | log_warning("access() failed on %s: %s", fpath, strerror(errno)); | |
1945 | ||
1946 | continue; | |
1947 | } | |
1948 | ||
1949 | free(name); | |
1950 | name = NULL; | |
1951 | if (asprintf(&name, "%s.service", de->d_name+3) < 0) { | |
1952 | r = -ENOMEM; | |
1953 | goto finish; | |
1954 | } | |
1955 | ||
1956 | if ((r = manager_load_unit(m, name, &service)) < 0) | |
1957 | goto finish; | |
1958 | ||
23a177ef | 1959 | if ((r = manager_load_unit(m, rcnd_table[i+1], &runlevel)) < 0) |
2c4104f0 LP |
1960 | goto finish; |
1961 | ||
1962 | if (de->d_name[0] == 'S') { | |
1963 | if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0) | |
1964 | goto finish; | |
1965 | ||
1966 | if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0) | |
1967 | goto finish; | |
23a177ef LP |
1968 | |
1969 | } else if (de->d_name[0] == 'K' && | |
1970 | (streq(rcnd_table[i+1], SPECIAL_RUNLEVEL0_TARGET) || | |
1971 | streq(rcnd_table[i+1], SPECIAL_RUNLEVEL6_TARGET))) { | |
1972 | ||
1973 | /* We honour K links only for | |
1974 | * halt/reboot. For the normal | |
1975 | * runlevels we assume the | |
1976 | * stop jobs will be | |
1977 | * implicitly added by the | |
1978 | * core logic. */ | |
1979 | ||
2c4104f0 LP |
1980 | if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0) |
1981 | goto finish; | |
1982 | ||
1983 | if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0) | |
1984 | goto finish; | |
1985 | } | |
1986 | } | |
1987 | } | |
1988 | ||
1989 | r = 0; | |
1990 | ||
1991 | finish: | |
1992 | free(path); | |
1993 | free(fpath); | |
1994 | free(name); | |
1995 | closedir(d); | |
1996 | ||
1997 | return r; | |
1998 | } | |
1999 | ||
94f04347 LP |
2000 | static const char* const service_state_table[_SERVICE_STATE_MAX] = { |
2001 | [SERVICE_DEAD] = "dead", | |
2002 | [SERVICE_START_PRE] = "start-pre", | |
2003 | [SERVICE_START] = "start", | |
2004 | [SERVICE_START_POST] = "start-post", | |
2005 | [SERVICE_RUNNING] = "running", | |
80876c20 | 2006 | [SERVICE_EXITED] = "exited", |
94f04347 LP |
2007 | [SERVICE_RELOAD] = "reload", |
2008 | [SERVICE_STOP] = "stop", | |
2009 | [SERVICE_STOP_SIGTERM] = "stop-sigterm", | |
2010 | [SERVICE_STOP_SIGKILL] = "stop-sigkill", | |
2011 | [SERVICE_STOP_POST] = "stop-post", | |
2012 | [SERVICE_FINAL_SIGTERM] = "final-sigterm", | |
2013 | [SERVICE_FINAL_SIGKILL] = "final-sigkill", | |
2014 | [SERVICE_MAINTAINANCE] = "maintainance", | |
2015 | [SERVICE_AUTO_RESTART] = "auto-restart", | |
2016 | }; | |
2017 | ||
2018 | DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState); | |
2019 | ||
2020 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { | |
2021 | [SERVICE_ONCE] = "once", | |
2022 | [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success", | |
40531a55 | 2023 | [SERVICE_RESTART_ALWAYS] = "restart-always", |
94f04347 LP |
2024 | }; |
2025 | ||
2026 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
2027 | ||
2028 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
2029 | [SERVICE_FORKING] = "forking", | |
2030 | [SERVICE_SIMPLE] = "simple", | |
2031 | [SERVICE_FINISH] = "finish" | |
2032 | }; | |
2033 | ||
2034 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
2035 | ||
e537352b | 2036 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { |
94f04347 LP |
2037 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", |
2038 | [SERVICE_EXEC_START] = "ExecStart", | |
2039 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
2040 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
2041 | [SERVICE_EXEC_STOP] = "ExecStop", | |
2042 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
2043 | }; | |
2044 | ||
2045 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
2046 | ||
87f0e418 | 2047 | const UnitVTable service_vtable = { |
5cb5a6ff LP |
2048 | .suffix = ".service", |
2049 | ||
034c6ed7 | 2050 | .init = service_init, |
e537352b | 2051 | .load = service_load, |
034c6ed7 LP |
2052 | .done = service_done, |
2053 | ||
5cb5a6ff LP |
2054 | .dump = service_dump, |
2055 | ||
2056 | .start = service_start, | |
2057 | .stop = service_stop, | |
2058 | .reload = service_reload, | |
2059 | ||
034c6ed7 LP |
2060 | .can_reload = service_can_reload, |
2061 | ||
5cb5a6ff LP |
2062 | .active_state = service_active_state, |
2063 | ||
034c6ed7 LP |
2064 | .sigchld_event = service_sigchld_event, |
2065 | .timer_event = service_timer_event, | |
2c4104f0 | 2066 | |
8e274523 LP |
2067 | .cgroup_notify_empty = service_cgroup_notify_event, |
2068 | ||
2c4104f0 | 2069 | .enumerate = service_enumerate |
5cb5a6ff | 2070 | }; |