]> git.ipfire.org Git - people/ms/systemd.git/blame - service.c
projects / people / ms / systemd.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
build-sys: fix AC_SUBST for /etc/rcN.d
[people/ms/systemd.git] / service.c
CommitLineData
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 38static const char * const rcnd_table[] = {
0571e011
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
23a177ef
LP		 46};
47
acbb0225 48static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
87f0e418
LP		 49 [SERVICE_DEAD] = UNIT_INACTIVE,
50 [SERVICE_START_PRE] = UNIT_ACTIVATING,
51 [SERVICE_START] = UNIT_ACTIVATING,
52 [SERVICE_START_POST] = UNIT_ACTIVATING,
53 [SERVICE_RUNNING] = UNIT_ACTIVE,
54 [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
55 [SERVICE_STOP] = UNIT_DEACTIVATING,
56 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
57 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
58 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
59 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
60 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
61 [SERVICE_MAINTAINANCE] = UNIT_INACTIVE,
62 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
034c6ed7 63};
5cb5a6ff 64
87f0e418
LP		 65static void service_done(Unit *u) {
66 Service *s = SERVICE(u);
44d8db9e
LP		 67
68 assert(s);
69
70 free(s->pid_file);
71 s->pid_file = NULL;
72
2c4104f0
LP		 73 free(s->sysv_path);
74 s->sysv_path = NULL;
75
44d8db9e
LP		 76 exec_context_done(&s->exec_context);
77 exec_command_free_array(s->exec_command, _SERVICE_EXEC_MAX);
78 s->control_command = NULL;
79
80 /* This will leak a process, but at least no memory or any of
81 * our resources */
82 if (s->main_pid > 0) {
87f0e418 83 unit_unwatch_pid(u, s->main_pid);
44d8db9e
LP		 84 s->main_pid = 0;
85 }
86
87 if (s->control_pid > 0) {
87f0e418 88 unit_unwatch_pid(u, s->control_pid);
44d8db9e
LP		 89 s->control_pid = 0;
90 }
91
acbb0225 92 unit_unwatch_timer(u, &s->timer_watch);
44d8db9e
LP		 93}
94
2c4104f0
LP		 95static int sysv_translate_name(const char *name, char **_r) {
96
97 static const char * const table[] = {
98 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
99 "$network", SPECIAL_NETWORK_TARGET,
100 "$named", SPECIAL_NSS_LOOKUP_TARGET,
101 "$portmap", SPECIAL_RPCBIND_TARGET,
102 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
103 "$syslog", SPECIAL_SYSLOG_TARGET,
104 "$time", SPECIAL_RTC_SET_TARGET
105 };
106
107 unsigned i;
108 char *r;
109
110 for (i = 0; i < ELEMENTSOF(table); i += 2)
111 if (streq(table[i], name)) {
112 if (!(r = strdup(table[i+1])))
113 return -ENOMEM;
114
115 goto finish;
116 }
117
118 if (*name == '$')
119 return 0;
120
121 if (asprintf(&r, "%s.service", name) < 0)
122 return -ENOMEM;
123
124finish:
125
126 if (_r)
127 *_r = r;
128
129 return 1;
130}
131
132static int sysv_chkconfig_order(Service *s) {
133 Meta *other;
134 int r;
135
136 assert(s);
137
138 if (s->sysv_start_priority < 0)
139 return 0;
140
23a177ef
LP		 141 /* For each pair of services where at least one lacks a LSB
142 * header, we use the start priority value to order things. */
2c4104f0
LP		 143
144 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
145 Service *t;
146 UnitDependency d;
147
148 t = (Service*) other;
149
150 if (s == t)
151 continue;
152
153 if (t->sysv_start_priority < 0)
154 continue;
155
23a177ef
LP		 156 if (s->sysv_has_lsb && t->sysv_has_lsb)
157 continue;
158
2c4104f0
LP		 159 if (t->sysv_start_priority < s->sysv_start_priority)
160 d = UNIT_AFTER;
161 else if (t->sysv_start_priority > s->sysv_start_priority)
162 d = UNIT_BEFORE;
163 else
164 continue;
165
166 /* FIXME: Maybe we should compare the name here lexicographically? */
167
168 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t))) < 0)
169 return r;
170 }
171
172 return 0;
173}
174
175static ExecCommand *exec_command_new(const char *path, const char *arg1) {
176 ExecCommand *c;
177
178 if (!(c = new0(ExecCommand, 1)))
179 return NULL;
180
181 if (!(c->path = strdup(path))) {
182 free(c);
183 return NULL;
184 }
185
186 if (!(c->argv = strv_new(path, arg1, NULL))) {
187 free(c->path);
188 free(c);
189 return NULL;
190 }
191
192 return c;
193}
194
195static int sysv_exec_commands(Service *s) {
196 ExecCommand *c;
197
198 assert(s);
199 assert(s->sysv_path);
200
201 if (!(c = exec_command_new(s->sysv_path, "start")))
202 return -ENOMEM;
203 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
204
205 if (!(c = exec_command_new(s->sysv_path, "stop")))
206 return -ENOMEM;
207 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
208
209 if (!(c = exec_command_new(s->sysv_path, "reload")))
210 return -ENOMEM;
211 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
212
213 return 0;
214}
215
23a177ef
LP		 216static int priority_from_rcd(Service *s, const char *init_script) {
217 char **p;
218 unsigned i;
219
061978fa 220 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvrcnd_path)
23a177ef
LP		 221 for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) {
222 char *path;
223 DIR *d;
224 struct dirent *de;
225
226 if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0)
227 return -ENOMEM;
228
229 d = opendir(path);
230 free(path);
231
232 if (!d) {
233 if (errno != ENOENT)
234 log_warning("opendir() failed on %s: %s", path, strerror(errno));
235
236 continue;
237 }
238
239 while ((de = readdir(d))) {
240 int a, b;
241
242 if (ignore_file(de->d_name))
243 continue;
244
245 if (de->d_name[0] != 'S')
246 continue;
247
248 if (strlen(de->d_name) < 4)
249 continue;
250
251 if (!streq(de->d_name + 3, init_script))
252 continue;
253
254 /* Yay, we found it! Now decode the priority */
255
256 a = undecchar(de->d_name[1]);
257 b = undecchar(de->d_name[2]);
258
259 if (a < 0 || b < 0)
260 continue;
261
262 s->sysv_start_priority = a*10 + b;
263
264 log_debug("Determined priority %i from link farm for %s", s->sysv_start_priority, unit_id(UNIT(s)));
265
266 closedir(d);
267 return 0;
268 }
269
270 closedir(d);
271 }
272
273 return 0;
274}
275
276static int service_load_sysv_path(Service *s, const char *path, UnitLoadState *new_state) {
2c4104f0
LP		 277 FILE *f;
278 Unit *u;
279 unsigned line = 0;
280 int r;
281 enum {
282 NORMAL,
283 DESCRIPTION,
284 LSB,
285 LSB_DESCRIPTION
286 } state = NORMAL;
23a177ef
LP		 287
288 assert(s);
289 assert(path);
290 assert(new_state);
2c4104f0
LP		 291
292 u = UNIT(s);
293
294 if (!(f = fopen(path, "re"))) {
295 r = errno == ENOENT ? 0 : -errno;
296 goto finish;
297 }
298
299 s->type = SERVICE_FORKING;
300 s->restart = SERVICE_ONCE;
301
302 free(s->sysv_path);
303 if (!(s->sysv_path = strdup(path))) {
304 r = -ENOMEM;
305 goto finish;
306 }
307
308 while (!feof(f)) {
309 char l[LINE_MAX], *t;
310
311 if (!fgets(l, sizeof(l), f)) {
312 if (feof(f))
313 break;
314
315 r = -errno;
316 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
317 goto finish;
318 }
319
320 line++;
321
322 t = strstrip(l);
323 if (*t != '#')
324 continue;
325
326 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
327 state = LSB;
23a177ef 328 s->sysv_has_lsb = true;
2c4104f0
LP		 329 continue;
330 }
331
332 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
333 state = NORMAL;
334 continue;
335 }
336
337 t++;
338 t += strspn(t, WHITESPACE);
339
340 if (state == NORMAL) {
341
342 /* Try to parse Red Hat style chkconfig headers */
343
344 if (startswith(t, "chkconfig:")) {
345 int start_priority;
346
347 state = NORMAL;
348
349 if (sscanf(t+10, "%*15s %i %*i",
350 &start_priority) != 1) {
351
352 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
353 continue;
354 }
355
356 if (start_priority < 0 || start_priority > 99) {
357 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
358 continue;
359 }
360
361 s->sysv_start_priority = start_priority;
362
363 } else if (startswith(t, "description:")) {
364
365 size_t k = strlen(t);
366 char *d;
367
368 if (t[k-1] == '\\') {
369 state = DESCRIPTION;
370 t[k-1] = 0;
371 }
372
373 if (!(d = strdup(strstrip(t+12)))) {
374 r = -ENOMEM;
375 goto finish;
376 }
377
378 free(u->meta.description);
379 u->meta.description = d;
380
381 } else if (startswith(t, "pidfile:")) {
382
383 char *fn;
384
385 state = NORMAL;
386
387 fn = strstrip(t+8);
388 if (!path_is_absolute(fn)) {
389 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
390 continue;
391 }
392
393 if (!(fn = strdup(fn))) {
394 r = -ENOMEM;
395 goto finish;
396 }
397
398 free(s->pid_file);
399 s->pid_file = fn;
400 }
401
402 } else if (state == DESCRIPTION) {
403
404 /* Try to parse Red Hat style description
405 * continuation */
406
407 size_t k = strlen(t);
408 char *d;
409
410 if (t[k-1] == '\\')
411 t[k-1] = 0;
412 else
413 state = NORMAL;
414
415 assert(u->meta.description);
416 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
417 r = -ENOMEM;
418 goto finish;
419 }
420
421 free(u->meta.description);
422 u->meta.description = d;
423
424 } else if (state == LSB || state == LSB_DESCRIPTION) {
425
426 if (startswith(t, "Provides:")) {
427 char *i, *w;
428 size_t z;
429
430 state = LSB;
431
432 FOREACH_WORD(w, z, t+9, i) {
433 char *n, *m;
434
435 if (!(n = strndup(w, z))) {
436 r = -ENOMEM;
437 goto finish;
438 }
439
440 r = sysv_translate_name(n, &m);
441 free(n);
442
443 if (r < 0)
444 goto finish;
445
446 if (r == 0)
447 continue;
448
bd77d0fc
LP		 449 if (unit_name_to_type(m) == UNIT_SERVICE)
450 r = unit_add_name(u, m);
451 else {
452 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m)) >= 0)
453 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m);
454 }
455
2c4104f0
LP		 456 free(m);
457
458 if (r < 0)
459 goto finish;
460 }
461
462 } else if (startswith(t, "Required-Start:") ||
463 startswith(t, "Should-Start:")) {
464 char *i, *w;
465 size_t z;
466
467 state = LSB;
468
469 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
470 char *n, *m;
471
472 if (!(n = strndup(w, z))) {
473 r = -ENOMEM;
474 goto finish;
475 }
476
477 r = sysv_translate_name(n, &m);
478 free(n);
479
480 if (r < 0)
481 goto finish;
482
483 if (r == 0)
484 continue;
485
486 if (!(r = unit_add_dependency_by_name(u, UNIT_AFTER, m)) < 0) {
487 free(m);
488 goto finish;
489 }
490
491 r = unit_add_dependency_by_name(
492 u,
493 startswith(t, "Required-Start:") ? UNIT_REQUIRES : UNIT_WANTS,
494 m);
495 free(m);
496
497 if (r < 0)
498 goto finish;
499 }
500
501 } else if (startswith(t, "Description:")) {
502 char *d;
503
504 state = LSB_DESCRIPTION;
505
506 if (!(d = strdup(strstrip(t+12)))) {
507 r = -ENOMEM;
508 goto finish;
509 }
510
511 free(u->meta.description);
512 u->meta.description = d;
513
514 } else if (startswith(t, "Short-Description:") && !u->meta.description) {
515 char *d;
516
517 /* We use the short description only
518 * if no long description is set. */
519
520 state = LSB;
521
522 if (!(d = strdup(strstrip(t+18)))) {
523 r = -ENOMEM;
524 goto finish;
525 }
526
527 free(u->meta.description);
528 u->meta.description = d;
529
530 } else if (state == LSB_DESCRIPTION) {
531
532 if (startswith(l, "#\t") || startswith(l, "# ")) {
533 char *d;
534
535 assert(u->meta.description);
536 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
537 r = -ENOMEM;
538 goto finish;
539 }
540
541 free(u->meta.description);
542 u->meta.description = d;
543 } else
544 state = LSB;
545 }
546 }
547 }
548
23a177ef
LP		 549 /* If init scripts have no LSB header, then we enforce the
550 * ordering via the chkconfig priorities. We try to determine
551 * a priority for *all* init scripts here, since they are
552 * needed as soon as at least one non-LSB script is used. */
2c4104f0 553
23a177ef
LP		 554 if (s->sysv_start_priority < 0) {
555 log_debug("%s has no chkconfig header, trying to determine SysV priority from link farm.", unit_id(u));
556
557 if ((r = priority_from_rcd(s, file_name_from_path(path))) < 0)
2c4104f0
LP		 558 goto finish;
559
23a177ef
LP		 560 if (s->sysv_start_priority < 0)
561 log_warning("%s has neither a chkconfig header nor a directory link, cannot order unit!", unit_id(u));
562 }
563
2c4104f0
LP		 564 if ((r = sysv_exec_commands(s)) < 0)
565 goto finish;
566
4a21885b
LP		 567 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_SERVICE)) < 0 ||
568 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_SERVICE)) < 0)
0fd030be
LP		 569 goto finish;
570
23a177ef
LP		 571 *new_state = UNIT_LOADED;
572 r = 0;
2c4104f0
LP		 573
574finish:
575
576 if (f)
577 fclose(f);
578
579 return r;
580}
581
23a177ef 582static int service_load_sysv_name(Service *s, const char *name, UnitLoadState *new_state) {
2c4104f0
LP		 583 char **p;
584
585 assert(s);
586 assert(name);
587
588 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
589 char *path;
590 int r;
591
592 if (asprintf(&path, "%s/%s", *p, name) < 0)
593 return -ENOMEM;
594
595 assert(endswith(path, ".service"));
596 path[strlen(path)-8] = 0;
597
23a177ef 598 r = service_load_sysv_path(s, path, new_state);
2c4104f0
LP		 599 free(path);
600
23a177ef 601 if (r < 0)
2c4104f0 602 return r;
23a177ef
LP		 603
604 if (*new_state != UNIT_STUB)
605 break;
2c4104f0
LP		 606 }
607
608 return 0;
609}
610
23a177ef 611static int service_load_sysv(Service *s, UnitLoadState *new_state) {
2c4104f0
LP		 612 const char *t;
613 Iterator i;
614 int r;
615
5cb5a6ff 616 assert(s);
23a177ef 617 assert(new_state);
5cb5a6ff
LP		 618
619 /* Load service data from SysV init scripts, preferably with
620 * LSB headers ... */
621
2c4104f0
LP		 622 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
623 return 0;
624
625 if ((t = unit_id(UNIT(s))))
23a177ef 626 if ((r = service_load_sysv_name(s, t, new_state)) < 0)
2c4104f0
LP		 627 return r;
628
23a177ef
LP		 629 if (*new_state == UNIT_STUB)
630 SET_FOREACH(t, UNIT(s)->meta.names, i) {
631 if ((r == service_load_sysv_name(s, t, new_state)) < 0)
632 return r;
633
634 if (*new_state != UNIT_STUB)
635 break;
636 }
2c4104f0
LP		 637
638 return 0;
5cb5a6ff
LP		 639}
640
23a177ef 641static int service_init(Unit *u, UnitLoadState *new_state) {
5cb5a6ff 642 int r;
87f0e418 643 Service *s = SERVICE(u);
5cb5a6ff
LP		 644
645 assert(s);
23a177ef
LP		 646 assert(new_state);
647 assert(*new_state == UNIT_STUB);
5cb5a6ff 648
034c6ed7
LP		 649 /* First, reset everything to the defaults, in case this is a
650 * reload */
651
652 s->type = 0;
653 s->restart = 0;
654
655 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
656 s->restart_usec = DEFAULT_RESTART_USEC;
657
658 exec_context_init(&s->exec_context);
659
acbb0225 660 s->timer_watch.type = WATCH_INVALID;
034c6ed7
LP		 661
662 s->state = SERVICE_DEAD;
5cb5a6ff 663
2c4104f0 664 s->sysv_start_priority = -1;
81a2b7ce
LP		 665 s->permissions_start_only = false;
666 s->root_directory_start_only = false;
2c4104f0 667
23a177ef
LP		 668 s->sysv_has_lsb = false;
669
1e2e8133
LP		 670 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
671
5cb5a6ff 672 /* Load a .service file */
23a177ef 673 if ((r = unit_load_fragment(u, new_state)) < 0)
5cb5a6ff
LP		 674 return r;
675
bd77d0fc 676 /* Load a classic init script as a fallback, if we couldn't find anything */
23a177ef
LP		 677 if (*new_state == UNIT_STUB)
678 if ((r = service_load_sysv(s, new_state)) < 0)
679 return r;
d46de8a1 680
23a177ef
LP		 681 /* Still nothing found? Then let's give up */
682 if (*new_state == UNIT_STUB)
683 return -ENOENT;
034c6ed7 684
23a177ef
LP		 685 /* We were able to load something, then let's add in the
686 * dropin directories. */
687 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 688 return r;
23a177ef
LP		 689
690 /* This is a new unit? Then let's add in some extras */
691 if (*new_state == UNIT_LOADED) {
692 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
693 return r;
694
695 if ((r = unit_add_default_cgroup(u)) < 0)
696 return r;
697
698 if ((r = sysv_chkconfig_order(s)) < 0)
699 return r;
8e274523
LP		 700 }
701
44d8db9e 702 return 0;
034c6ed7
LP		 703}
704
87f0e418 705static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 706
5cb5a6ff 707 ServiceExecCommand c;
87f0e418 708 Service *s = SERVICE(u);
47be870b
LP		 709 const char *prefix2;
710 char *p2;
5cb5a6ff
LP		 711
712 assert(s);
713
47be870b
LP		 714 p2 = strappend(prefix, "\t");
715 prefix2 = p2 ? p2 : prefix;
44d8db9e 716
5cb5a6ff 717 fprintf(f,
81a2b7ce
LP		 718 "%sService State: %s\n"
719 "%sPermissionsStartOnly: %s\n"
8e274523 720 "%sRootDirectoryStartOnly: %s\n"
03d6ab85
LP		 721 "%sValidNoProcess: %s\n"
722 "%sType: %s\n",
81a2b7ce
LP		 723 prefix, service_state_to_string(s->state),
724 prefix, yes_no(s->permissions_start_only),
8e274523 725 prefix, yes_no(s->root_directory_start_only),
03d6ab85
LP		 726 prefix, yes_no(s->valid_no_process),
727 prefix, service_type_to_string(s->type));
5cb5a6ff 728
034c6ed7
LP		 729 if (s->pid_file)
730 fprintf(f,
731 "%sPIDFile: %s\n",
732 prefix, s->pid_file);
733
5cb5a6ff
LP		 734 exec_context_dump(&s->exec_context, f, prefix);
735
736 for (c = 0; c < _SERVICE_EXEC_MAX; c++) {
5cb5a6ff 737
44d8db9e
LP		 738 if (!s->exec_command[c])
739 continue;
740
741 fprintf(f, "%s→ %s:\n",
94f04347 742 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 743
744 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 745 }
44d8db9e 746
2c4104f0
LP		 747 if (s->sysv_path)
748 fprintf(f,
23a177ef
LP		 749 "%sSysV Init Script Path: %s\n"
750 "%sSysV Init Script has LSB Header: %s\n",
751 prefix, s->sysv_path,
752 prefix, yes_no(s->sysv_has_lsb));
2c4104f0
LP		 753
754 if (s->sysv_start_priority >= 0)
755 fprintf(f,
23a177ef 756 "%sSysVStartPriority: %i\n",
2c4104f0
LP		 757 prefix, s->sysv_start_priority);
758
23a177ef 759
47be870b 760 free(p2);
5cb5a6ff
LP		 761}
762
034c6ed7
LP		 763static int service_load_pid_file(Service *s) {
764 char *k;
765 unsigned long p;
766 int r;
767
768 assert(s);
769
770 if (s->main_pid_known)
771 return 0;
772
773 if (!s->pid_file)
774 return -ENOENT;
775
776 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
777 return r;
778
779 if ((r = safe_atolu(k, &p)) < 0) {
780 free(k);
781 return r;
782 }
783
784 if ((unsigned long) (pid_t) p != p)
785 return -ERANGE;
786
787 s->main_pid = p;
788 s->main_pid_known = true;
789
790 return 0;
791}
792
3e33402a
LP		 793static int service_get_sockets(Service *s, Set **_set) {
794 Set *set;
ceee3d82
LP		 795 Iterator i;
796 char *t;
3e33402a 797 int r;
ceee3d82
LP		 798
799 assert(s);
3e33402a
LP		 800 assert(_set);
801
802 /* Collects all Socket objects that belong to this
803 * service. Note that a service might have multiple sockets
804 * via multiple names. */
805
806 if (!(set = set_new(NULL, NULL)))
807 return -ENOMEM;
ceee3d82
LP		 808
809 SET_FOREACH(t, UNIT(s)->meta.names, i) {
810 char *k;
811 Unit *p;
812
813 /* Look for all socket objects that go by any of our
814 * units and collect their fds */
815
3e33402a
LP		 816 if (!(k = unit_name_change_suffix(t, ".socket"))) {
817 r = -ENOMEM;
818 goto fail;
819 }
ceee3d82
LP		 820
821 p = manager_get_unit(UNIT(s)->meta.manager, k);
822 free(k);
823
3e33402a 824 if (!p) continue;
ceee3d82 825
3e33402a
LP		 826 if ((r = set_put(set, p)) < 0)
827 goto fail;
ceee3d82
LP		 828 }
829
3e33402a
LP		 830 *_set = set;
831 return 0;
832
833fail:
834 set_free(set);
835 return r;
836}
837
838
839static int service_notify_sockets(Service *s) {
840 Iterator i;
841 Set *set;
47be870b 842 Socket *sock;
3e33402a
LP		 843 int r;
844
845 assert(s);
846
847 /* Notifies all our sockets when we die */
848
849 if ((r = service_get_sockets(s, &set)) < 0)
850 return r;
851
47be870b
LP		 852 SET_FOREACH(sock, set, i)
853 socket_notify_service_dead(sock);
3e33402a
LP		 854
855 set_free(set);
856
ceee3d82
LP		 857 return 0;
858}
859
034c6ed7
LP		 860static void service_set_state(Service *s, ServiceState state) {
861 ServiceState old_state;
5cb5a6ff
LP		 862 assert(s);
863
034c6ed7 864 old_state = s->state;
5cb5a6ff 865 s->state = state;
034c6ed7
LP		 866
867 if (state != SERVICE_START_PRE &&
868 state != SERVICE_START &&
869 state != SERVICE_START_POST &&
870 state != SERVICE_RELOAD &&
871 state != SERVICE_STOP &&
872 state != SERVICE_STOP_SIGTERM &&
873 state != SERVICE_STOP_SIGKILL &&
874 state != SERVICE_STOP_POST &&
875 state != SERVICE_FINAL_SIGTERM &&
876 state != SERVICE_FINAL_SIGKILL &&
877 state != SERVICE_AUTO_RESTART)
acbb0225 878 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 879
7d55e835
LP		 880 if (state != SERVICE_START &&
881 state != SERVICE_START_POST &&
034c6ed7
LP		 882 state != SERVICE_RUNNING &&
883 state != SERVICE_RELOAD &&
884 state != SERVICE_STOP &&
885 state != SERVICE_STOP_SIGTERM &&
886 state != SERVICE_STOP_SIGKILL)
acbb0225 887 if (s->main_pid > 0) {
87f0e418 888 unit_unwatch_pid(UNIT(s), s->main_pid);
034c6ed7
LP		 889 s->main_pid = 0;
890 }
891
892 if (state != SERVICE_START_PRE &&
893 state != SERVICE_START &&
894 state != SERVICE_START_POST &&
895 state != SERVICE_RELOAD &&
896 state != SERVICE_STOP &&
897 state != SERVICE_STOP_SIGTERM &&
898 state != SERVICE_STOP_SIGKILL &&
899 state != SERVICE_STOP_POST &&
900 state != SERVICE_FINAL_SIGTERM &&
901 state != SERVICE_FINAL_SIGKILL)
acbb0225 902 if (s->control_pid > 0) {
87f0e418 903 unit_unwatch_pid(UNIT(s), s->control_pid);
034c6ed7
LP		 904 s->control_pid = 0;
905 }
906
907 if (state != SERVICE_START_PRE &&
908 state != SERVICE_START &&
909 state != SERVICE_START_POST &&
910 state != SERVICE_RELOAD &&
911 state != SERVICE_STOP &&
912 state != SERVICE_STOP_POST)
913 s->control_command = NULL;
914
ceee3d82
LP		 915 if (state == SERVICE_DEAD ||
916 state == SERVICE_STOP ||
917 state == SERVICE_STOP_SIGTERM ||
918 state == SERVICE_STOP_SIGKILL ||
919 state == SERVICE_STOP_POST ||
920 state == SERVICE_FINAL_SIGTERM ||
921 state == SERVICE_FINAL_SIGKILL ||
922 state == SERVICE_MAINTAINANCE ||
923 state == SERVICE_AUTO_RESTART)
924 service_notify_sockets(s);
925
94f04347 926 log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 927
928 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 929}
930
44d8db9e
LP		 931static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
932 Iterator i;
933 int r;
934 int *rfds = NULL;
935 unsigned rn_fds = 0;
3e33402a 936 Set *set;
47be870b 937 Socket *sock;
44d8db9e
LP		 938
939 assert(s);
940 assert(fds);
941 assert(n_fds);
942
3e33402a
LP		 943 if ((r = service_get_sockets(s, &set)) < 0)
944 return r;
945
47be870b 946 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 947 int *cfds;
948 unsigned cn_fds;
949
47be870b 950 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 951 goto fail;
952
953 if (!cfds)
954 continue;
955
956 if (!rfds) {
957 rfds = cfds;
958 rn_fds = cn_fds;
959 } else {
960 int *t;
961
962 if (!(t = new(int, rn_fds+cn_fds))) {
963 free(cfds);
964 r = -ENOMEM;
965 goto fail;
966 }
967
968 memcpy(t, rfds, rn_fds);
969 memcpy(t+rn_fds, cfds, cn_fds);
970 free(rfds);
971 free(cfds);
972
973 rfds = t;
974 rn_fds = rn_fds+cn_fds;
975 }
976 }
977
978 *fds = rfds;
979 *n_fds = rn_fds;
3e33402a
LP		 980
981 set_free(set);
982
44d8db9e
LP		 983 return 0;
984
985fail:
3e33402a 986 set_free(set);
44d8db9e 987 free(rfds);
3e33402a 988
44d8db9e
LP		 989 return r;
990}
991
81a2b7ce
LP		 992static int service_spawn(
993 Service *s,
994 ExecCommand *c,
995 bool timeout,
996 bool pass_fds,
997 bool apply_permissions,
998 bool apply_chroot,
999 pid_t *_pid) {
1000
034c6ed7
LP		 1001 pid_t pid;
1002 int r;
44d8db9e
LP		 1003 int *fds = NULL;
1004 unsigned n_fds = 0;
034c6ed7
LP		 1005
1006 assert(s);
1007 assert(c);
1008 assert(_pid);
1009
44d8db9e
LP		 1010 if (pass_fds)
1011 if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
1012 goto fail;
1013
034c6ed7 1014 if (timeout) {
acbb0225 1015 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1016 goto fail;
1017 } else
acbb0225 1018 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1019
81a2b7ce
LP		 1020 if ((r = exec_spawn(c,
1021 &s->exec_context,
1022 fds, n_fds,
1023 apply_permissions,
1024 apply_chroot,
8e274523 1025 UNIT(s)->meta.cgroup_bondings,
81a2b7ce 1026 &pid)) < 0)
034c6ed7
LP		 1027 goto fail;
1028
87f0e418 1029 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1030 /* FIXME: we need to do something here */
1031 goto fail;
1032
44d8db9e 1033 free(fds);
034c6ed7
LP		 1034 *_pid = pid;
1035
5cb5a6ff 1036 return 0;
034c6ed7
LP		 1037
1038fail:
44d8db9e
LP		 1039 free(fds);
1040
034c6ed7 1041 if (timeout)
acbb0225 1042 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1043
1044 return r;
1045}
1046
1047static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1048 int r;
1049 assert(s);
1050
1051 if (!success)
1052 s->failure = true;
1053
1054 if (allow_restart &&
1055 (s->restart == SERVICE_RESTART_ALWAYS ||
1056 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1057
acbb0225 1058 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1059 goto fail;
1060
1061 service_set_state(s, SERVICE_AUTO_RESTART);
1062 } else
1063 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1064
1065 return;
1066
1067fail:
87f0e418 1068 log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1069 service_enter_dead(s, false, false);
1070}
1071
1072static void service_enter_signal(Service *s, ServiceState state, bool success);
1073
1074static void service_enter_stop_post(Service *s, bool success) {
1075 int r;
1076 assert(s);
1077
1078 if (!success)
1079 s->failure = true;
1080
d6ea93e3 1081 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
81a2b7ce
LP		 1082 if ((r = service_spawn(s,
1083 s->control_command,
1084 true,
1085 false,
1086 !s->permissions_start_only,
1087 !s->root_directory_start_only,
1088 &s->control_pid)) < 0)
034c6ed7
LP		 1089 goto fail;
1090
d6ea93e3
LP		 1091
1092 service_set_state(s, SERVICE_STOP_POST);
1093
1094 if (!s->control_command)
034c6ed7
LP		 1095 service_enter_dead(s, true, true);
1096
1097 return;
1098
1099fail:
87f0e418 1100 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1101 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1102}
1103
1104static void service_enter_signal(Service *s, ServiceState state, bool success) {
1105 int r;
1106 bool sent = false;
1107
1108 assert(s);
1109
1110 if (!success)
1111 s->failure = true;
1112
1113 if (s->main_pid > 0 || s->control_pid > 0) {
1114 int sig;
1115
1116 sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1117
1118 r = 0;
1119 if (s->main_pid > 0) {
1120 if (kill(s->main_pid, sig) < 0 && errno != ESRCH)
1121 r = -errno;
1122 else
1123 sent = true;
1124 }
1125
1126 if (s->control_pid > 0) {
1127 if (kill(s->control_pid, sig) < 0 && errno != ESRCH)
1128 r = -errno;
1129 else
1130 sent = true;
1131 }
1132
1133 if (r < 0)
1134 goto fail;
d6ea93e3 1135 }
034c6ed7 1136
d6ea93e3
LP		 1137 service_set_state(s, state);
1138
1139 if (s->main_pid <= 0 && s->control_pid <= 0)
034c6ed7
LP		 1140 service_enter_dead(s, true, true);
1141
1142 return;
1143
1144fail:
87f0e418 1145 log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1146
1147 if (sent) {
1148 s->failure = true;
1149 service_set_state(s, state);
1150 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1151 service_enter_stop_post(s, false);
1152 else
1153 service_enter_dead(s, false, true);
1154}
1155
1156static void service_enter_stop(Service *s, bool success) {
1157 int r;
1158 assert(s);
1159
1160 if (!success)
1161 s->failure = true;
1162
d6ea93e3 1163 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
81a2b7ce
LP		 1164 if ((r = service_spawn(s,
1165 s->control_command,
1166 true,
1167 false,
1168 !s->permissions_start_only,
1169 !s->root_directory_start_only,
1170 &s->control_pid)) < 0)
034c6ed7
LP		 1171 goto fail;
1172
d6ea93e3
LP		 1173 service_set_state(s, SERVICE_STOP);
1174
1175 if (!s->control_command)
034c6ed7
LP		 1176 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1177
1178 return;
1179
1180fail:
87f0e418 1181 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1182 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1183}
1184
1185static void service_enter_start_post(Service *s) {
1186 int r;
1187 assert(s);
1188
d6ea93e3 1189 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST]))
81a2b7ce
LP		 1190 if ((r = service_spawn(s,
1191 s->control_command,
1192 true,
1193 false,
1194 !s->permissions_start_only,
1195 !s->root_directory_start_only,
1196 &s->control_pid)) < 0)
034c6ed7
LP		 1197 goto fail;
1198
d6ea93e3
LP		 1199
1200 service_set_state(s, SERVICE_START_POST);
1201
1202 if (!s->control_command)
034c6ed7
LP		 1203 service_set_state(s, SERVICE_RUNNING);
1204
1205 return;
1206
1207fail:
87f0e418 1208 log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1209 service_enter_stop(s, false);
1210}
1211
1212static void service_enter_start(Service *s) {
1213 pid_t pid;
1214 int r;
1215
1216 assert(s);
1217
1218 assert(s->exec_command[SERVICE_EXEC_START]);
1219 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1220
81a2b7ce
LP		 1221 if ((r = service_spawn(s,
1222 s->exec_command[SERVICE_EXEC_START],
1223 s->type == SERVICE_FORKING,
1224 true,
1225 true,
1226 true,
1227 &pid)) < 0)
034c6ed7
LP		 1228 goto fail;
1229
d6ea93e3
LP		 1230 service_set_state(s, SERVICE_START);
1231
034c6ed7
LP		 1232 if (s->type == SERVICE_SIMPLE) {
1233 /* For simple services we immediately start
1234 * the START_POST binaries. */
1235
1236 s->main_pid = pid;
1237 s->main_pid_known = true;
1238 service_enter_start_post(s);
1239
1240 } else if (s->type == SERVICE_FORKING) {
1241
1242 /* For forking services we wait until the start
1243 * process exited. */
1244
1245 s->control_pid = pid;
1246 s->control_command = s->exec_command[SERVICE_EXEC_START];
7d55e835
LP		 1247 } else if (s->type == SERVICE_FINISH) {
1248
1249 /* For finishing services we wait until the start
1250 * process exited, too, but it is our main process. */
1251
1252 s->main_pid = pid;
1253 s->control_command = s->exec_command[SERVICE_EXEC_START];
034c6ed7
LP		 1254 } else
1255 assert_not_reached("Unknown service type");
1256
1257 return;
1258
1259fail:
87f0e418 1260 log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1261 service_enter_stop(s, false);
1262}
1263
1264static void service_enter_start_pre(Service *s) {
1265 int r;
1266
1267 assert(s);
1268
d6ea93e3 1269 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
81a2b7ce
LP		 1270 if ((r = service_spawn(s,
1271 s->control_command,
1272 true,
1273 false,
1274 !s->permissions_start_only,
1275 !s->root_directory_start_only,
1276 &s->control_pid)) < 0)
034c6ed7
LP		 1277 goto fail;
1278
d6ea93e3
LP		 1279 service_set_state(s, SERVICE_START_PRE);
1280
1281 if (!s->control_command)
034c6ed7
LP		 1282 service_enter_start(s);
1283
1284 return;
1285
1286fail:
87f0e418 1287 log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1288 service_enter_dead(s, false, true);
1289}
1290
1291static void service_enter_restart(Service *s) {
1292 int r;
1293 assert(s);
1294
87f0e418 1295 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1296 goto fail;
1297
87f0e418 1298 log_debug("%s scheduled restart job.", unit_id(UNIT(s)));
034c6ed7
LP		 1299 service_enter_dead(s, true, false);
1300 return;
1301
1302fail:
1303
87f0e418 1304 log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1305 service_enter_dead(s, false, false);
1306}
1307
1308static void service_enter_reload(Service *s) {
1309 int r;
1310
1311 assert(s);
1312
d6ea93e3 1313 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
81a2b7ce
LP		 1314 if ((r = service_spawn(s,
1315 s->control_command,
1316 true,
1317 false,
1318 !s->permissions_start_only,
1319 !s->root_directory_start_only,
1320 &s->control_pid)) < 0)
034c6ed7
LP		 1321 goto fail;
1322
d6ea93e3
LP		 1323 service_set_state(s, SERVICE_RELOAD);
1324
1325 if (!s->control_command)
034c6ed7
LP		 1326 service_set_state(s, SERVICE_RUNNING);
1327
1328 return;
1329
1330fail:
87f0e418 1331 log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1332 service_enter_stop(s, false);
1333}
1334
1335static void service_run_next(Service *s, bool success) {
1336 int r;
1337
1338 assert(s);
1339 assert(s->control_command);
1340 assert(s->control_command->command_next);
1341
1342 if (!success)
1343 s->failure = true;
1344
1345 s->control_command = s->control_command->command_next;
1346
81a2b7ce
LP		 1347 if ((r = service_spawn(s,
1348 s->control_command,
1349 true,
1350 false,
1351 !s->permissions_start_only,
1352 !s->root_directory_start_only,
1353 &s->control_pid)) < 0)
034c6ed7
LP		 1354 goto fail;
1355
1356 return;
1357
1358fail:
87f0e418 1359 log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1360
1361 if (s->state == SERVICE_STOP)
1362 service_enter_stop_post(s, false);
1363 else if (s->state == SERVICE_STOP_POST)
1364 service_enter_dead(s, false, true);
1365 else
1366 service_enter_stop(s, false);
5cb5a6ff
LP		 1367}
1368
87f0e418
LP		 1369static int service_start(Unit *u) {
1370 Service *s = SERVICE(u);
5cb5a6ff
LP		 1371
1372 assert(s);
1373
034c6ed7
LP		 1374 /* We cannot fulfill this request right now, try again later
1375 * please! */
1376 if (s->state == SERVICE_STOP ||
1377 s->state == SERVICE_STOP_SIGTERM ||
1378 s->state == SERVICE_STOP_SIGKILL ||
1379 s->state == SERVICE_STOP_POST ||
1380 s->state == SERVICE_FINAL_SIGTERM ||
1381 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1382 return -EAGAIN;
1383
034c6ed7
LP		 1384 /* Already on it! */
1385 if (s->state == SERVICE_START_PRE ||
1386 s->state == SERVICE_START ||
1387 s->state == SERVICE_START_POST)
1388 return 0;
1389
1390 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1391
1e2e8133
LP		 1392 /* Make sure we don't enter a busy loop of some kind. */
1393 if (!ratelimit_test(&s->ratelimit)) {
1394 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
1395 return -EAGAIN;
1396 }
1397
034c6ed7
LP		 1398 s->failure = false;
1399 s->main_pid_known = false;
1400
1401 service_enter_start_pre(s);
1402 return 0;
5cb5a6ff
LP		 1403}
1404
87f0e418
LP		 1405static int service_stop(Unit *u) {
1406 Service *s = SERVICE(u);
5cb5a6ff
LP		 1407
1408 assert(s);
1409
034c6ed7
LP		 1410 if (s->state == SERVICE_START_PRE ||
1411 s->state == SERVICE_START ||
1412 s->state == SERVICE_START_POST ||
1413 s->state == SERVICE_RELOAD)
1414 return -EAGAIN;
1415
1416 if (s->state == SERVICE_AUTO_RESTART) {
1417 service_set_state(s, SERVICE_DEAD);
1418 return 0;
1419 }
1420
1421 assert(s->state == SERVICE_RUNNING);
5cb5a6ff 1422
034c6ed7 1423 service_enter_stop(s, true);
5cb5a6ff
LP		 1424 return 0;
1425}
1426
87f0e418
LP		 1427static int service_reload(Unit *u) {
1428 Service *s = SERVICE(u);
034c6ed7
LP		 1429
1430 assert(s);
1431
1432 assert(s->state == SERVICE_RUNNING);
1433
1434 service_enter_reload(s);
5cb5a6ff
LP		 1435 return 0;
1436}
1437
87f0e418
LP		 1438static bool service_can_reload(Unit *u) {
1439 Service *s = SERVICE(u);
034c6ed7
LP		 1440
1441 assert(s);
1442
1443 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1444}
1445
87f0e418
LP		 1446static UnitActiveState service_active_state(Unit *u) {
1447 assert(u);
5cb5a6ff 1448
acbb0225 1449 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1450}
1451
1452static int main_pid_good(Service *s) {
1453 assert(s);
1454
1455 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1456 * don't know */
1457
1458 /* If we know the pid file, then lets just check if it is
1459 * still valid */
1460 if (s->main_pid_known)
1461 return s->main_pid > 0;
1462
1463 /* We don't know the pid */
8e274523 1464 return -EAGAIN;
034c6ed7
LP		 1465}
1466
1467static bool control_pid_good(Service *s) {
1468 assert(s);
5cb5a6ff 1469
034c6ed7 1470 return s->control_pid > 0;
5cb5a6ff
LP		 1471}
1472
8e274523
LP		 1473static int cgroup_good(Service *s) {
1474 assert(s);
1475
1476 if (s->valid_no_process)
1477 return -EAGAIN;
1478
1479 return cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings);
1480}
1481
87f0e418
LP		 1482static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1483 Service *s = SERVICE(u);
034c6ed7 1484 bool success;
5cb5a6ff
LP		 1485
1486 assert(s);
034c6ed7
LP		 1487 assert(pid >= 0);
1488
bd982a8b 1489 success = code == CLD_EXITED && status == 0;
034c6ed7
LP		 1490 s->failure = s->failure || !success;
1491
1492 if (s->main_pid == pid) {
1493
1494 exec_status_fill(&s->main_exec_status, pid, code, status);
1495 s->main_pid = 0;
1496
7d55e835 1497 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
034c6ed7
LP		 1498 assert(s->exec_command[SERVICE_EXEC_START]);
1499 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1500 }
1501
94f04347 1502 log_debug("%s: main process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1503
1504 /* The service exited, so the service is officially
1505 * gone. */
1506
1507 switch (s->state) {
1508
1509 case SERVICE_START_POST:
1510 case SERVICE_RELOAD:
1511 case SERVICE_STOP:
1512 /* Need to wait until the operation is
1513 * done */
1514 break;
1515
7d55e835
LP		 1516 case SERVICE_START:
1517 assert(s->type == SERVICE_FINISH);
1518
1519 /* This was our main goal, so let's go on */
1520 if (success)
1521 service_enter_start_post(s);
1522 else
1523 service_enter_stop(s, false);
1524 break;
1525
034c6ed7
LP		 1526 case SERVICE_RUNNING:
1527 service_enter_stop(s, success);
1528 break;
1529
1530 case SERVICE_STOP_SIGTERM:
1531 case SERVICE_STOP_SIGKILL:
1532
1533 if (!control_pid_good(s))
1534 service_enter_stop_post(s, success);
5cb5a6ff 1535
034c6ed7
LP		 1536 /* If there is still a control process, wait for that first */
1537 break;
5cb5a6ff 1538
034c6ed7
LP		 1539 default:
1540 assert_not_reached("Uh, main process died at wrong time.");
1541 }
5cb5a6ff 1542
034c6ed7
LP		 1543 } else if (s->control_pid == pid) {
1544 assert(s->control_command);
1545
1546 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1547 s->control_pid = 0;
1548
94f04347 1549 log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1550
1551 /* If we are shutting things down anyway we
1552 * don't care about failing commands. */
1553
1554 if (s->control_command->command_next &&
b866264a 1555 (success || (s->state == SERVICE_STOP || s->state == SERVICE_STOP_POST)))
034c6ed7
LP		 1556
1557 /* There is another command to *
1558 * execute, so let's do that. */
1559
1560 service_run_next(s, success);
1561
1562 else {
1563 /* No further commands for this step, so let's
1564 * figure out what to do next */
1565
94f04347 1566 log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
bd982a8b 1567
034c6ed7
LP		 1568 switch (s->state) {
1569
1570 case SERVICE_START_PRE:
1571 if (success)
1572 service_enter_start(s);
1573 else
1574 service_enter_stop(s, false);
1575 break;
1576
1577 case SERVICE_START:
1578 assert(s->type == SERVICE_FORKING);
1579
1580 /* Let's try to load the pid
1581 * file here if we can. We
1582 * ignore the return value,
1583 * since the PID file might
1584 * actually be created by a
1585 * START_POST script */
1586
1587 if (success) {
1588 if (s->pid_file)
1589 service_load_pid_file(s);
1590
1591 service_enter_start_post(s);
1592 } else
1593 service_enter_stop(s, false);
1594
1595 break;
1596
1597 case SERVICE_START_POST:
1598 if (success && s->pid_file && !s->main_pid_known) {
1599 int r;
1600
1601 /* Hmm, let's see if we can
1602 * load the pid now after the
1603 * start-post scripts got
1604 * executed. */
1605
1606 if ((r = service_load_pid_file(s)) < 0)
87f0e418 1607 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
034c6ed7
LP		 1608 }
1609
1610 /* Fall through */
1611
1612 case SERVICE_RELOAD:
1613 if (success) {
8e274523 1614 if (main_pid_good(s) != 0 && cgroup_good(s) != 0)
034c6ed7
LP		 1615 service_set_state(s, SERVICE_RUNNING);
1616 else
1617 service_enter_stop(s, true);
1618 } else
1619 service_enter_stop(s, false);
1620
1621 break;
1622
1623 case SERVICE_STOP:
1624 if (main_pid_good(s) > 0)
1625 /* Still not dead and we know the PID? Let's go hunting. */
1626 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
1627 else
1628 service_enter_stop_post(s, success);
1629 break;
1630
1631 case SERVICE_STOP_SIGTERM:
1632 case SERVICE_STOP_SIGKILL:
1633 if (main_pid_good(s) <= 0)
1634 service_enter_stop_post(s, success);
1635
1636 /* If there is still a service
1637 * process around, wait until
1638 * that one quit, too */
1639 break;
1640
1641 case SERVICE_STOP_POST:
1642 case SERVICE_FINAL_SIGTERM:
1643 case SERVICE_FINAL_SIGKILL:
1644 service_enter_dead(s, success, true);
1645 break;
1646
1647 default:
1648 assert_not_reached("Uh, control process died at wrong time.");
1649 }
1650 }
1651 } else
1652 assert_not_reached("Got SIGCHLD for unkown PID");
1653}
1654
acbb0225 1655static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 1656 Service *s = SERVICE(u);
034c6ed7
LP		 1657
1658 assert(s);
1659 assert(elapsed == 1);
1660
acbb0225 1661 assert(w == &s->timer_watch);
034c6ed7
LP		 1662
1663 switch (s->state) {
1664
1665 case SERVICE_START_PRE:
1666 case SERVICE_START:
1667 case SERVICE_START_POST:
1668 case SERVICE_RELOAD:
87f0e418 1669 log_warning("%s operation timed out. Stopping.", unit_id(u));
034c6ed7
LP		 1670 service_enter_stop(s, false);
1671 break;
1672
1673 case SERVICE_STOP:
87f0e418 1674 log_warning("%s stopping timed out. Terminating.", unit_id(u));
034c6ed7
LP		 1675 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1676 break;
1677
1678 case SERVICE_STOP_SIGTERM:
87f0e418 1679 log_warning("%s stopping timed out. Killing.", unit_id(u));
034c6ed7
LP		 1680 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
1681 break;
1682
1683 case SERVICE_STOP_SIGKILL:
1684 /* Uh, wie sent a SIGKILL and it is still not gone?
1685 * Must be something we cannot kill, so let's just be
1686 * weirded out and continue */
1687
87f0e418 1688 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
034c6ed7
LP		 1689 service_enter_stop_post(s, false);
1690 break;
1691
1692 case SERVICE_STOP_POST:
87f0e418 1693 log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
034c6ed7
LP		 1694 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1695 break;
1696
1697 case SERVICE_FINAL_SIGTERM:
87f0e418 1698 log_warning("%s stopping timed out (2). Killing.", unit_id(u));
034c6ed7
LP		 1699 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
1700 break;
1701
1702 case SERVICE_FINAL_SIGKILL:
87f0e418 1703 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
034c6ed7
LP		 1704 service_enter_dead(s, false, true);
1705 break;
1706
1707 case SERVICE_AUTO_RESTART:
87f0e418 1708 log_debug("%s holdoff time over, scheduling restart.", unit_id(u));
034c6ed7
LP		 1709 service_enter_restart(s);
1710 break;
1711
1712 default:
1713 assert_not_reached("Timeout at wrong time.");
1714 }
5cb5a6ff
LP		 1715}
1716
8e274523
LP		 1717static void service_cgroup_notify_event(Unit *u) {
1718 Service *s = SERVICE(u);
1719
1720 assert(u);
1721
1722 log_debug("%s: cgroup is empty", unit_id(u));
1723
1724 switch (s->state) {
1725
1726 /* Waiting for SIGCHLD is usually more interesting,
1727 * because it includes return codes/signals. Which is
1728 * why we ignore the cgroup events for most cases,
1729 * except when we don't know pid which to expect the
1730 * SIGCHLD for. */
1731
1732 case SERVICE_RUNNING:
1733
1734 if (!s->valid_no_process && main_pid_good(s) <= 0)
1735 service_enter_stop(s, true);
1736
1737 break;
1738
1739 default:
1740 ;
1741 }
1742}
1743
2c4104f0 1744static int service_enumerate(Manager *m) {
2c4104f0
LP		 1745 char **p;
1746 unsigned i;
1747 DIR *d = NULL;
1748 char *path = NULL, *fpath = NULL, *name = NULL;
1749 int r;
1750
1751 assert(m);
1752
1753 STRV_FOREACH(p, m->sysvinit_path)
23a177ef 1754 for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) {
2c4104f0
LP		 1755 struct dirent *de;
1756
1757 free(path);
1758 path = NULL;
23a177ef 1759 if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0) {
2c4104f0
LP		 1760 r = -ENOMEM;
1761 goto finish;
1762 }
1763
1764 if (d)
1765 closedir(d);
1766
1767 if (!(d = opendir(path))) {
1768 if (errno != ENOENT)
1769 log_warning("opendir() failed on %s: %s", path, strerror(errno));
1770
1771 continue;
1772 }
1773
1774 while ((de = readdir(d))) {
1775 Unit *runlevel, *service;
1776
1777 if (ignore_file(de->d_name))
1778 continue;
1779
1780 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
1781 continue;
1782
1783 if (strlen(de->d_name) < 4)
1784 continue;
1785
1786 free(fpath);
1787 fpath = NULL;
23a177ef 1788 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i], de->d_name) < 0) {
2c4104f0
LP		 1789 r = -ENOMEM;
1790 goto finish;
1791 }
1792
1793 if (access(fpath, X_OK) < 0) {
1794
1795 if (errno != ENOENT)
1796 log_warning("access() failed on %s: %s", fpath, strerror(errno));
1797
1798 continue;
1799 }
1800
1801 free(name);
1802 name = NULL;
1803 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
1804 r = -ENOMEM;
1805 goto finish;
1806 }
1807
1808 if ((r = manager_load_unit(m, name, &service)) < 0)
1809 goto finish;
1810
23a177ef 1811 if ((r = manager_load_unit(m, rcnd_table[i+1], &runlevel)) < 0)
2c4104f0
LP		 1812 goto finish;
1813
1814 if (de->d_name[0] == 'S') {
1815 if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
1816 goto finish;
1817
1818 if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
1819 goto finish;
23a177ef
LP		 1820
1821 } else if (de->d_name[0] == 'K' &&
1822 (streq(rcnd_table[i+1], SPECIAL_RUNLEVEL0_TARGET) ||
1823 streq(rcnd_table[i+1], SPECIAL_RUNLEVEL6_TARGET))) {
1824
1825 /* We honour K links only for
1826 * halt/reboot. For the normal
1827 * runlevels we assume the
1828 * stop jobs will be
1829 * implicitly added by the
1830 * core logic. */
1831
2c4104f0
LP		 1832 if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
1833 goto finish;
1834
1835 if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
1836 goto finish;
1837 }
1838 }
1839 }
1840
1841 r = 0;
1842
1843finish:
1844 free(path);
1845 free(fpath);
1846 free(name);
1847 closedir(d);
1848
1849 return r;
1850}
1851
94f04347
LP		 1852static const char* const service_state_table[_SERVICE_STATE_MAX] = {
1853 [SERVICE_DEAD] = "dead",
1854 [SERVICE_START_PRE] = "start-pre",
1855 [SERVICE_START] = "start",
1856 [SERVICE_START_POST] = "start-post",
1857 [SERVICE_RUNNING] = "running",
1858 [SERVICE_RELOAD] = "reload",
1859 [SERVICE_STOP] = "stop",
1860 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
1861 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
1862 [SERVICE_STOP_POST] = "stop-post",
1863 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
1864 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
1865 [SERVICE_MAINTAINANCE] = "maintainance",
1866 [SERVICE_AUTO_RESTART] = "auto-restart",
1867};
1868
1869DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
1870
1871static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
1872 [SERVICE_ONCE] = "once",
1873 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
1874 [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
1875};
1876
1877DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
1878
1879static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
1880 [SERVICE_FORKING] = "forking",
1881 [SERVICE_SIMPLE] = "simple",
1882 [SERVICE_FINISH] = "finish"
1883};
1884
1885DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
1886
1887static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
1888 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
1889 [SERVICE_EXEC_START] = "ExecStart",
1890 [SERVICE_EXEC_START_POST] = "ExecStartPost",
1891 [SERVICE_EXEC_RELOAD] = "ExecReload",
1892 [SERVICE_EXEC_STOP] = "ExecStop",
1893 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
1894};
1895
1896DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
1897
87f0e418 1898const UnitVTable service_vtable = {
5cb5a6ff
LP		 1899 .suffix = ".service",
1900
034c6ed7
LP		 1901 .init = service_init,
1902 .done = service_done,
1903
5cb5a6ff
LP		 1904 .dump = service_dump,
1905
1906 .start = service_start,
1907 .stop = service_stop,
1908 .reload = service_reload,
1909
034c6ed7
LP		 1910 .can_reload = service_can_reload,
1911
5cb5a6ff
LP		 1912 .active_state = service_active_state,
1913
034c6ed7
LP		 1914 .sigchld_event = service_sigchld_event,
1915 .timer_event = service_timer_event,
2c4104f0 1916
8e274523
LP		 1917 .cgroup_notify_empty = service_cgroup_notify_event,
1918
2c4104f0 1919 .enumerate = service_enumerate
5cb5a6ff 1920};
Michael's branch of systemd.