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[thirdparty/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
acbb0225 38static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
87f0e418
LP		 39 [SERVICE_DEAD] = UNIT_INACTIVE,
40 [SERVICE_START_PRE] = UNIT_ACTIVATING,
41 [SERVICE_START] = UNIT_ACTIVATING,
42 [SERVICE_START_POST] = UNIT_ACTIVATING,
43 [SERVICE_RUNNING] = UNIT_ACTIVE,
44 [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
45 [SERVICE_STOP] = UNIT_DEACTIVATING,
46 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
47 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
48 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
49 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
50 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
51 [SERVICE_MAINTAINANCE] = UNIT_INACTIVE,
52 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
034c6ed7 53};
5cb5a6ff 54
87f0e418
LP		 55static void service_done(Unit *u) {
56 Service *s = SERVICE(u);
44d8db9e
LP		 57
58 assert(s);
59
60 free(s->pid_file);
61 s->pid_file = NULL;
62
2c4104f0
LP		 63 free(s->sysv_path);
64 s->sysv_path = NULL;
65
44d8db9e
LP		 66 exec_context_done(&s->exec_context);
67 exec_command_free_array(s->exec_command, _SERVICE_EXEC_MAX);
68 s->control_command = NULL;
69
70 /* This will leak a process, but at least no memory or any of
71 * our resources */
72 if (s->main_pid > 0) {
87f0e418 73 unit_unwatch_pid(u, s->main_pid);
44d8db9e
LP		 74 s->main_pid = 0;
75 }
76
77 if (s->control_pid > 0) {
87f0e418 78 unit_unwatch_pid(u, s->control_pid);
44d8db9e
LP		 79 s->control_pid = 0;
80 }
81
acbb0225 82 unit_unwatch_timer(u, &s->timer_watch);
44d8db9e
LP		 83}
84
2c4104f0
LP		 85static int sysv_translate_name(const char *name, char **_r) {
86
87 static const char * const table[] = {
88 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
89 "$network", SPECIAL_NETWORK_TARGET,
90 "$named", SPECIAL_NSS_LOOKUP_TARGET,
91 "$portmap", SPECIAL_RPCBIND_TARGET,
92 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
93 "$syslog", SPECIAL_SYSLOG_TARGET,
94 "$time", SPECIAL_RTC_SET_TARGET
95 };
96
97 unsigned i;
98 char *r;
99
100 for (i = 0; i < ELEMENTSOF(table); i += 2)
101 if (streq(table[i], name)) {
102 if (!(r = strdup(table[i+1])))
103 return -ENOMEM;
104
105 goto finish;
106 }
107
108 if (*name == '$')
109 return 0;
110
111 if (asprintf(&r, "%s.service", name) < 0)
112 return -ENOMEM;
113
114finish:
115
116 if (_r)
117 *_r = r;
118
119 return 1;
120}
121
122static int sysv_chkconfig_order(Service *s) {
123 Meta *other;
124 int r;
125
126 assert(s);
127
128 if (s->sysv_start_priority < 0)
129 return 0;
130
131 /* If no LSB header is found we try to order init scripts via
132 * the start priority of the chkconfig header. */
133
134 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
135 Service *t;
136 UnitDependency d;
137
138 t = (Service*) other;
139
140 if (s == t)
141 continue;
142
143 if (t->sysv_start_priority < 0)
144 continue;
145
146 if (t->sysv_start_priority < s->sysv_start_priority)
147 d = UNIT_AFTER;
148 else if (t->sysv_start_priority > s->sysv_start_priority)
149 d = UNIT_BEFORE;
150 else
151 continue;
152
153 /* FIXME: Maybe we should compare the name here lexicographically? */
154
155 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t))) < 0)
156 return r;
157 }
158
159 return 0;
160}
161
162static ExecCommand *exec_command_new(const char *path, const char *arg1) {
163 ExecCommand *c;
164
165 if (!(c = new0(ExecCommand, 1)))
166 return NULL;
167
168 if (!(c->path = strdup(path))) {
169 free(c);
170 return NULL;
171 }
172
173 if (!(c->argv = strv_new(path, arg1, NULL))) {
174 free(c->path);
175 free(c);
176 return NULL;
177 }
178
179 return c;
180}
181
182static int sysv_exec_commands(Service *s) {
183 ExecCommand *c;
184
185 assert(s);
186 assert(s->sysv_path);
187
188 if (!(c = exec_command_new(s->sysv_path, "start")))
189 return -ENOMEM;
190 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
191
192 if (!(c = exec_command_new(s->sysv_path, "stop")))
193 return -ENOMEM;
194 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
195
196 if (!(c = exec_command_new(s->sysv_path, "reload")))
197 return -ENOMEM;
198 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
199
200 return 0;
201}
202
203static int service_load_sysv_path(Service *s, const char *path) {
204 FILE *f;
205 Unit *u;
206 unsigned line = 0;
207 int r;
208 enum {
209 NORMAL,
210 DESCRIPTION,
211 LSB,
212 LSB_DESCRIPTION
213 } state = NORMAL;
214 bool has_lsb = false;
215
216 u = UNIT(s);
217
218 if (!(f = fopen(path, "re"))) {
219 r = errno == ENOENT ? 0 : -errno;
220 goto finish;
221 }
222
223 s->type = SERVICE_FORKING;
224 s->restart = SERVICE_ONCE;
225
226 free(s->sysv_path);
227 if (!(s->sysv_path = strdup(path))) {
228 r = -ENOMEM;
229 goto finish;
230 }
231
232 while (!feof(f)) {
233 char l[LINE_MAX], *t;
234
235 if (!fgets(l, sizeof(l), f)) {
236 if (feof(f))
237 break;
238
239 r = -errno;
240 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
241 goto finish;
242 }
243
244 line++;
245
246 t = strstrip(l);
247 if (*t != '#')
248 continue;
249
250 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
251 state = LSB;
252 has_lsb = true;
253 continue;
254 }
255
256 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
257 state = NORMAL;
258 continue;
259 }
260
261 t++;
262 t += strspn(t, WHITESPACE);
263
264 if (state == NORMAL) {
265
266 /* Try to parse Red Hat style chkconfig headers */
267
268 if (startswith(t, "chkconfig:")) {
269 int start_priority;
270
271 state = NORMAL;
272
273 if (sscanf(t+10, "%*15s %i %*i",
274 &start_priority) != 1) {
275
276 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
277 continue;
278 }
279
280 if (start_priority < 0 || start_priority > 99) {
281 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
282 continue;
283 }
284
285 s->sysv_start_priority = start_priority;
286
287 } else if (startswith(t, "description:")) {
288
289 size_t k = strlen(t);
290 char *d;
291
292 if (t[k-1] == '\\') {
293 state = DESCRIPTION;
294 t[k-1] = 0;
295 }
296
297 if (!(d = strdup(strstrip(t+12)))) {
298 r = -ENOMEM;
299 goto finish;
300 }
301
302 free(u->meta.description);
303 u->meta.description = d;
304
305 } else if (startswith(t, "pidfile:")) {
306
307 char *fn;
308
309 state = NORMAL;
310
311 fn = strstrip(t+8);
312 if (!path_is_absolute(fn)) {
313 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
314 continue;
315 }
316
317 if (!(fn = strdup(fn))) {
318 r = -ENOMEM;
319 goto finish;
320 }
321
322 free(s->pid_file);
323 s->pid_file = fn;
324 }
325
326 } else if (state == DESCRIPTION) {
327
328 /* Try to parse Red Hat style description
329 * continuation */
330
331 size_t k = strlen(t);
332 char *d;
333
334 if (t[k-1] == '\\')
335 t[k-1] = 0;
336 else
337 state = NORMAL;
338
339 assert(u->meta.description);
340 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
341 r = -ENOMEM;
342 goto finish;
343 }
344
345 free(u->meta.description);
346 u->meta.description = d;
347
348 } else if (state == LSB || state == LSB_DESCRIPTION) {
349
350 if (startswith(t, "Provides:")) {
351 char *i, *w;
352 size_t z;
353
354 state = LSB;
355
356 FOREACH_WORD(w, z, t+9, i) {
357 char *n, *m;
358
359 if (!(n = strndup(w, z))) {
360 r = -ENOMEM;
361 goto finish;
362 }
363
364 r = sysv_translate_name(n, &m);
365 free(n);
366
367 if (r < 0)
368 goto finish;
369
370 if (r == 0)
371 continue;
372
bd77d0fc
LP		 373 if (unit_name_to_type(m) == UNIT_SERVICE)
374 r = unit_add_name(u, m);
375 else {
376 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m)) >= 0)
377 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m);
378 }
379
2c4104f0
LP		 380 free(m);
381
382 if (r < 0)
383 goto finish;
384 }
385
386 } else if (startswith(t, "Required-Start:") ||
387 startswith(t, "Should-Start:")) {
388 char *i, *w;
389 size_t z;
390
391 state = LSB;
392
393 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
394 char *n, *m;
395
396 if (!(n = strndup(w, z))) {
397 r = -ENOMEM;
398 goto finish;
399 }
400
401 r = sysv_translate_name(n, &m);
402 free(n);
403
404 if (r < 0)
405 goto finish;
406
407 if (r == 0)
408 continue;
409
410 if (!(r = unit_add_dependency_by_name(u, UNIT_AFTER, m)) < 0) {
411 free(m);
412 goto finish;
413 }
414
415 r = unit_add_dependency_by_name(
416 u,
417 startswith(t, "Required-Start:") ? UNIT_REQUIRES : UNIT_WANTS,
418 m);
419 free(m);
420
421 if (r < 0)
422 goto finish;
423 }
424
425 } else if (startswith(t, "Description:")) {
426 char *d;
427
428 state = LSB_DESCRIPTION;
429
430 if (!(d = strdup(strstrip(t+12)))) {
431 r = -ENOMEM;
432 goto finish;
433 }
434
435 free(u->meta.description);
436 u->meta.description = d;
437
438 } else if (startswith(t, "Short-Description:") && !u->meta.description) {
439 char *d;
440
441 /* We use the short description only
442 * if no long description is set. */
443
444 state = LSB;
445
446 if (!(d = strdup(strstrip(t+18)))) {
447 r = -ENOMEM;
448 goto finish;
449 }
450
451 free(u->meta.description);
452 u->meta.description = d;
453
454 } else if (state == LSB_DESCRIPTION) {
455
456 if (startswith(l, "#\t") || startswith(l, "# ")) {
457 char *d;
458
459 assert(u->meta.description);
460 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
461 r = -ENOMEM;
462 goto finish;
463 }
464
465 free(u->meta.description);
466 u->meta.description = d;
467 } else
468 state = LSB;
469 }
470 }
471 }
472
473 /* If the init script has no LSB header, then let's
474 * enforce the ordering via the chkconfig
475 * priorities */
476
477 if (!has_lsb)
478 if ((r = sysv_chkconfig_order(s)) < 0)
479 goto finish;
480
481 if ((r = sysv_exec_commands(s)) < 0)
482 goto finish;
483
484 r = 1;
485
486finish:
487
488 if (f)
489 fclose(f);
490
491 return r;
492}
493
494static int service_load_sysv_name(Service *s, const char *name) {
495 char **p;
496
497 assert(s);
498 assert(name);
499
500 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
501 char *path;
502 int r;
503
504 if (asprintf(&path, "%s/%s", *p, name) < 0)
505 return -ENOMEM;
506
507 assert(endswith(path, ".service"));
508 path[strlen(path)-8] = 0;
509
510 r = service_load_sysv_path(s, path);
511 free(path);
512
24e61ac4 513 if (r != 0)
2c4104f0
LP		 514 return r;
515 }
516
517 return 0;
518}
519
5cb5a6ff 520static int service_load_sysv(Service *s) {
2c4104f0
LP		 521 const char *t;
522 Iterator i;
523 int r;
524
5cb5a6ff
LP		 525 assert(s);
526
527 /* Load service data from SysV init scripts, preferably with
528 * LSB headers ... */
529
2c4104f0
LP		 530 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
531 return 0;
532
533 if ((t = unit_id(UNIT(s))))
534 if ((r = service_load_sysv_name(s, t)) != 0)
535 return r;
536
537 SET_FOREACH(t, UNIT(s)->meta.names, i)
538 if ((r == service_load_sysv_name(s, t)) != 0)
539 return r;
540
541 return 0;
5cb5a6ff
LP		 542}
543
87f0e418 544static int service_init(Unit *u) {
5cb5a6ff 545 int r;
87f0e418 546 Service *s = SERVICE(u);
5cb5a6ff
LP		 547
548 assert(s);
549
034c6ed7
LP		 550 /* First, reset everything to the defaults, in case this is a
551 * reload */
552
553 s->type = 0;
554 s->restart = 0;
555
556 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
557 s->restart_usec = DEFAULT_RESTART_USEC;
558
559 exec_context_init(&s->exec_context);
560
acbb0225 561 s->timer_watch.type = WATCH_INVALID;
034c6ed7
LP		 562
563 s->state = SERVICE_DEAD;
5cb5a6ff 564
2c4104f0 565 s->sysv_start_priority = -1;
81a2b7ce
LP		 566 s->permissions_start_only = false;
567 s->root_directory_start_only = false;
2c4104f0 568
1e2e8133
LP		 569 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
570
5cb5a6ff 571 /* Load a .service file */
d46de8a1 572 if ((r = unit_load_fragment(u)) < 0) {
87f0e418 573 service_done(u);
5cb5a6ff 574 return r;
44d8db9e 575 }
5cb5a6ff 576
bd77d0fc 577 /* Load a classic init script as a fallback, if we couldn't find anything */
d46de8a1
LP		 578 if (r == 0)
579 if ((r = service_load_sysv(s)) <= 0) {
580 service_done(u);
581 return r < 0 ? r : -ENOENT;
582 }
583
5cb5a6ff 584 /* Load dropin directory data */
87f0e418
LP		 585 if ((r = unit_load_dropin(u)) < 0) {
586 service_done(u);
5cb5a6ff 587 return r;
034c6ed7
LP		 588 }
589
8e274523
LP		 590 /* Add default cgroup */
591 if ((r = unit_add_default_cgroup(u)) < 0) {
592 service_done(u);
593 return r;
594 }
595
44d8db9e 596 return 0;
034c6ed7
LP		 597}
598
87f0e418 599static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 600
5cb5a6ff 601 ServiceExecCommand c;
87f0e418 602 Service *s = SERVICE(u);
47be870b
LP		 603 const char *prefix2;
604 char *p2;
5cb5a6ff
LP		 605
606 assert(s);
607
47be870b
LP		 608 p2 = strappend(prefix, "\t");
609 prefix2 = p2 ? p2 : prefix;
44d8db9e 610
5cb5a6ff 611 fprintf(f,
81a2b7ce
LP		 612 "%sService State: %s\n"
613 "%sPermissionsStartOnly: %s\n"
8e274523 614 "%sRootDirectoryStartOnly: %s\n"
03d6ab85
LP		 615 "%sValidNoProcess: %s\n"
616 "%sType: %s\n",
81a2b7ce
LP		 617 prefix, service_state_to_string(s->state),
618 prefix, yes_no(s->permissions_start_only),
8e274523 619 prefix, yes_no(s->root_directory_start_only),
03d6ab85
LP		 620 prefix, yes_no(s->valid_no_process),
621 prefix, service_type_to_string(s->type));
5cb5a6ff 622
034c6ed7
LP		 623 if (s->pid_file)
624 fprintf(f,
625 "%sPIDFile: %s\n",
626 prefix, s->pid_file);
627
628
5cb5a6ff
LP		 629 exec_context_dump(&s->exec_context, f, prefix);
630
631 for (c = 0; c < _SERVICE_EXEC_MAX; c++) {
5cb5a6ff 632
44d8db9e
LP		 633 if (!s->exec_command[c])
634 continue;
635
636 fprintf(f, "%s→ %s:\n",
94f04347 637 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 638
639 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 640 }
44d8db9e 641
2c4104f0
LP		 642 if (s->sysv_path)
643 fprintf(f,
644 "%sSysV Init Script Path: %s\n",
645 prefix, s->sysv_path);
646
647 if (s->sysv_start_priority >= 0)
648 fprintf(f,
649 "%sSysV Start Priority: %i\n",
650 prefix, s->sysv_start_priority);
651
47be870b 652 free(p2);
5cb5a6ff
LP		 653}
654
034c6ed7
LP		 655static int service_load_pid_file(Service *s) {
656 char *k;
657 unsigned long p;
658 int r;
659
660 assert(s);
661
662 if (s->main_pid_known)
663 return 0;
664
665 if (!s->pid_file)
666 return -ENOENT;
667
668 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
669 return r;
670
671 if ((r = safe_atolu(k, &p)) < 0) {
672 free(k);
673 return r;
674 }
675
676 if ((unsigned long) (pid_t) p != p)
677 return -ERANGE;
678
679 s->main_pid = p;
680 s->main_pid_known = true;
681
682 return 0;
683}
684
3e33402a
LP		 685static int service_get_sockets(Service *s, Set **_set) {
686 Set *set;
ceee3d82
LP		 687 Iterator i;
688 char *t;
3e33402a 689 int r;
ceee3d82
LP		 690
691 assert(s);
3e33402a
LP		 692 assert(_set);
693
694 /* Collects all Socket objects that belong to this
695 * service. Note that a service might have multiple sockets
696 * via multiple names. */
697
698 if (!(set = set_new(NULL, NULL)))
699 return -ENOMEM;
ceee3d82
LP		 700
701 SET_FOREACH(t, UNIT(s)->meta.names, i) {
702 char *k;
703 Unit *p;
704
705 /* Look for all socket objects that go by any of our
706 * units and collect their fds */
707
3e33402a
LP		 708 if (!(k = unit_name_change_suffix(t, ".socket"))) {
709 r = -ENOMEM;
710 goto fail;
711 }
ceee3d82
LP		 712
713 p = manager_get_unit(UNIT(s)->meta.manager, k);
714 free(k);
715
3e33402a 716 if (!p) continue;
ceee3d82 717
3e33402a
LP		 718 if ((r = set_put(set, p)) < 0)
719 goto fail;
ceee3d82
LP		 720 }
721
3e33402a
LP		 722 *_set = set;
723 return 0;
724
725fail:
726 set_free(set);
727 return r;
728}
729
730
731static int service_notify_sockets(Service *s) {
732 Iterator i;
733 Set *set;
47be870b 734 Socket *sock;
3e33402a
LP		 735 int r;
736
737 assert(s);
738
739 /* Notifies all our sockets when we die */
740
741 if ((r = service_get_sockets(s, &set)) < 0)
742 return r;
743
47be870b
LP		 744 SET_FOREACH(sock, set, i)
745 socket_notify_service_dead(sock);
3e33402a
LP		 746
747 set_free(set);
748
ceee3d82
LP		 749 return 0;
750}
751
034c6ed7
LP		 752static void service_set_state(Service *s, ServiceState state) {
753 ServiceState old_state;
5cb5a6ff
LP		 754 assert(s);
755
034c6ed7 756 old_state = s->state;
5cb5a6ff 757 s->state = state;
034c6ed7
LP		 758
759 if (state != SERVICE_START_PRE &&
760 state != SERVICE_START &&
761 state != SERVICE_START_POST &&
762 state != SERVICE_RELOAD &&
763 state != SERVICE_STOP &&
764 state != SERVICE_STOP_SIGTERM &&
765 state != SERVICE_STOP_SIGKILL &&
766 state != SERVICE_STOP_POST &&
767 state != SERVICE_FINAL_SIGTERM &&
768 state != SERVICE_FINAL_SIGKILL &&
769 state != SERVICE_AUTO_RESTART)
acbb0225 770 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 771
7d55e835
LP		 772 if (state != SERVICE_START &&
773 state != SERVICE_START_POST &&
034c6ed7
LP		 774 state != SERVICE_RUNNING &&
775 state != SERVICE_RELOAD &&
776 state != SERVICE_STOP &&
777 state != SERVICE_STOP_SIGTERM &&
778 state != SERVICE_STOP_SIGKILL)
acbb0225 779 if (s->main_pid > 0) {
87f0e418 780 unit_unwatch_pid(UNIT(s), s->main_pid);
034c6ed7
LP		 781 s->main_pid = 0;
782 }
783
784 if (state != SERVICE_START_PRE &&
785 state != SERVICE_START &&
786 state != SERVICE_START_POST &&
787 state != SERVICE_RELOAD &&
788 state != SERVICE_STOP &&
789 state != SERVICE_STOP_SIGTERM &&
790 state != SERVICE_STOP_SIGKILL &&
791 state != SERVICE_STOP_POST &&
792 state != SERVICE_FINAL_SIGTERM &&
793 state != SERVICE_FINAL_SIGKILL)
acbb0225 794 if (s->control_pid > 0) {
87f0e418 795 unit_unwatch_pid(UNIT(s), s->control_pid);
034c6ed7
LP		 796 s->control_pid = 0;
797 }
798
799 if (state != SERVICE_START_PRE &&
800 state != SERVICE_START &&
801 state != SERVICE_START_POST &&
802 state != SERVICE_RELOAD &&
803 state != SERVICE_STOP &&
804 state != SERVICE_STOP_POST)
805 s->control_command = NULL;
806
ceee3d82
LP		 807 if (state == SERVICE_DEAD ||
808 state == SERVICE_STOP ||
809 state == SERVICE_STOP_SIGTERM ||
810 state == SERVICE_STOP_SIGKILL ||
811 state == SERVICE_STOP_POST ||
812 state == SERVICE_FINAL_SIGTERM ||
813 state == SERVICE_FINAL_SIGKILL ||
814 state == SERVICE_MAINTAINANCE ||
815 state == SERVICE_AUTO_RESTART)
816 service_notify_sockets(s);
817
94f04347 818 log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 819
820 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 821}
822
44d8db9e
LP		 823static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
824 Iterator i;
825 int r;
826 int *rfds = NULL;
827 unsigned rn_fds = 0;
3e33402a 828 Set *set;
47be870b 829 Socket *sock;
44d8db9e
LP		 830
831 assert(s);
832 assert(fds);
833 assert(n_fds);
834
3e33402a
LP		 835 if ((r = service_get_sockets(s, &set)) < 0)
836 return r;
837
47be870b 838 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 839 int *cfds;
840 unsigned cn_fds;
841
47be870b 842 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 843 goto fail;
844
845 if (!cfds)
846 continue;
847
848 if (!rfds) {
849 rfds = cfds;
850 rn_fds = cn_fds;
851 } else {
852 int *t;
853
854 if (!(t = new(int, rn_fds+cn_fds))) {
855 free(cfds);
856 r = -ENOMEM;
857 goto fail;
858 }
859
860 memcpy(t, rfds, rn_fds);
861 memcpy(t+rn_fds, cfds, cn_fds);
862 free(rfds);
863 free(cfds);
864
865 rfds = t;
866 rn_fds = rn_fds+cn_fds;
867 }
868 }
869
870 *fds = rfds;
871 *n_fds = rn_fds;
3e33402a
LP		 872
873 set_free(set);
874
44d8db9e
LP		 875 return 0;
876
877fail:
3e33402a 878 set_free(set);
44d8db9e 879 free(rfds);
3e33402a 880
44d8db9e
LP		 881 return r;
882}
883
81a2b7ce
LP		 884static int service_spawn(
885 Service *s,
886 ExecCommand *c,
887 bool timeout,
888 bool pass_fds,
889 bool apply_permissions,
890 bool apply_chroot,
891 pid_t *_pid) {
892
034c6ed7
LP		 893 pid_t pid;
894 int r;
44d8db9e
LP		 895 int *fds = NULL;
896 unsigned n_fds = 0;
034c6ed7
LP		 897
898 assert(s);
899 assert(c);
900 assert(_pid);
901
44d8db9e
LP		 902 if (pass_fds)
903 if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
904 goto fail;
905
034c6ed7 906 if (timeout) {
acbb0225 907 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 908 goto fail;
909 } else
acbb0225 910 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 911
81a2b7ce
LP		 912 if ((r = exec_spawn(c,
913 &s->exec_context,
914 fds, n_fds,
915 apply_permissions,
916 apply_chroot,
8e274523 917 UNIT(s)->meta.cgroup_bondings,
81a2b7ce 918 &pid)) < 0)
034c6ed7
LP		 919 goto fail;
920
87f0e418 921 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 922 /* FIXME: we need to do something here */
923 goto fail;
924
44d8db9e 925 free(fds);
034c6ed7
LP		 926 *_pid = pid;
927
5cb5a6ff 928 return 0;
034c6ed7
LP		 929
930fail:
44d8db9e
LP		 931 free(fds);
932
034c6ed7 933 if (timeout)
acbb0225 934 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 935
936 return r;
937}
938
939static void service_enter_dead(Service *s, bool success, bool allow_restart) {
940 int r;
941 assert(s);
942
943 if (!success)
944 s->failure = true;
945
946 if (allow_restart &&
947 (s->restart == SERVICE_RESTART_ALWAYS ||
948 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
949
acbb0225 950 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 951 goto fail;
952
953 service_set_state(s, SERVICE_AUTO_RESTART);
954 } else
955 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
956
957 return;
958
959fail:
87f0e418 960 log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 961 service_enter_dead(s, false, false);
962}
963
964static void service_enter_signal(Service *s, ServiceState state, bool success);
965
966static void service_enter_stop_post(Service *s, bool success) {
967 int r;
968 assert(s);
969
970 if (!success)
971 s->failure = true;
972
d6ea93e3 973 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
81a2b7ce
LP		 974 if ((r = service_spawn(s,
975 s->control_command,
976 true,
977 false,
978 !s->permissions_start_only,
979 !s->root_directory_start_only,
980 &s->control_pid)) < 0)
034c6ed7
LP		 981 goto fail;
982
d6ea93e3
LP		 983
984 service_set_state(s, SERVICE_STOP_POST);
985
986 if (!s->control_command)
034c6ed7
LP		 987 service_enter_dead(s, true, true);
988
989 return;
990
991fail:
87f0e418 992 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 993 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
994}
995
996static void service_enter_signal(Service *s, ServiceState state, bool success) {
997 int r;
998 bool sent = false;
999
1000 assert(s);
1001
1002 if (!success)
1003 s->failure = true;
1004
1005 if (s->main_pid > 0 || s->control_pid > 0) {
1006 int sig;
1007
1008 sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1009
1010 r = 0;
1011 if (s->main_pid > 0) {
1012 if (kill(s->main_pid, sig) < 0 && errno != ESRCH)
1013 r = -errno;
1014 else
1015 sent = true;
1016 }
1017
1018 if (s->control_pid > 0) {
1019 if (kill(s->control_pid, sig) < 0 && errno != ESRCH)
1020 r = -errno;
1021 else
1022 sent = true;
1023 }
1024
1025 if (r < 0)
1026 goto fail;
d6ea93e3 1027 }
034c6ed7 1028
d6ea93e3
LP		 1029 service_set_state(s, state);
1030
1031 if (s->main_pid <= 0 && s->control_pid <= 0)
034c6ed7
LP		 1032 service_enter_dead(s, true, true);
1033
1034 return;
1035
1036fail:
87f0e418 1037 log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1038
1039 if (sent) {
1040 s->failure = true;
1041 service_set_state(s, state);
1042 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1043 service_enter_stop_post(s, false);
1044 else
1045 service_enter_dead(s, false, true);
1046}
1047
1048static void service_enter_stop(Service *s, bool success) {
1049 int r;
1050 assert(s);
1051
1052 if (!success)
1053 s->failure = true;
1054
d6ea93e3 1055 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
81a2b7ce
LP		 1056 if ((r = service_spawn(s,
1057 s->control_command,
1058 true,
1059 false,
1060 !s->permissions_start_only,
1061 !s->root_directory_start_only,
1062 &s->control_pid)) < 0)
034c6ed7
LP		 1063 goto fail;
1064
d6ea93e3
LP		 1065 service_set_state(s, SERVICE_STOP);
1066
1067 if (!s->control_command)
034c6ed7
LP		 1068 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1069
1070 return;
1071
1072fail:
87f0e418 1073 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1074 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1075}
1076
1077static void service_enter_start_post(Service *s) {
1078 int r;
1079 assert(s);
1080
d6ea93e3 1081 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_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_START_POST);
1093
1094 if (!s->control_command)
034c6ed7
LP		 1095 service_set_state(s, SERVICE_RUNNING);
1096
1097 return;
1098
1099fail:
87f0e418 1100 log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1101 service_enter_stop(s, false);
1102}
1103
1104static void service_enter_start(Service *s) {
1105 pid_t pid;
1106 int r;
1107
1108 assert(s);
1109
1110 assert(s->exec_command[SERVICE_EXEC_START]);
1111 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1112
81a2b7ce
LP		 1113 if ((r = service_spawn(s,
1114 s->exec_command[SERVICE_EXEC_START],
1115 s->type == SERVICE_FORKING,
1116 true,
1117 true,
1118 true,
1119 &pid)) < 0)
034c6ed7
LP		 1120 goto fail;
1121
d6ea93e3
LP		 1122 service_set_state(s, SERVICE_START);
1123
034c6ed7
LP		 1124 if (s->type == SERVICE_SIMPLE) {
1125 /* For simple services we immediately start
1126 * the START_POST binaries. */
1127
1128 s->main_pid = pid;
1129 s->main_pid_known = true;
1130 service_enter_start_post(s);
1131
1132 } else if (s->type == SERVICE_FORKING) {
1133
1134 /* For forking services we wait until the start
1135 * process exited. */
1136
1137 s->control_pid = pid;
1138 s->control_command = s->exec_command[SERVICE_EXEC_START];
7d55e835
LP		 1139 } else if (s->type == SERVICE_FINISH) {
1140
1141 /* For finishing services we wait until the start
1142 * process exited, too, but it is our main process. */
1143
1144 s->main_pid = pid;
1145 s->control_command = s->exec_command[SERVICE_EXEC_START];
034c6ed7
LP		 1146 } else
1147 assert_not_reached("Unknown service type");
1148
1149 return;
1150
1151fail:
87f0e418 1152 log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1153 service_enter_stop(s, false);
1154}
1155
1156static void service_enter_start_pre(Service *s) {
1157 int r;
1158
1159 assert(s);
1160
d6ea93e3 1161 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
81a2b7ce
LP		 1162 if ((r = service_spawn(s,
1163 s->control_command,
1164 true,
1165 false,
1166 !s->permissions_start_only,
1167 !s->root_directory_start_only,
1168 &s->control_pid)) < 0)
034c6ed7
LP		 1169 goto fail;
1170
d6ea93e3
LP		 1171 service_set_state(s, SERVICE_START_PRE);
1172
1173 if (!s->control_command)
034c6ed7
LP		 1174 service_enter_start(s);
1175
1176 return;
1177
1178fail:
87f0e418 1179 log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1180 service_enter_dead(s, false, true);
1181}
1182
1183static void service_enter_restart(Service *s) {
1184 int r;
1185 assert(s);
1186
87f0e418 1187 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1188 goto fail;
1189
87f0e418 1190 log_debug("%s scheduled restart job.", unit_id(UNIT(s)));
034c6ed7
LP		 1191 service_enter_dead(s, true, false);
1192 return;
1193
1194fail:
1195
87f0e418 1196 log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1197 service_enter_dead(s, false, false);
1198}
1199
1200static void service_enter_reload(Service *s) {
1201 int r;
1202
1203 assert(s);
1204
d6ea93e3 1205 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
81a2b7ce
LP		 1206 if ((r = service_spawn(s,
1207 s->control_command,
1208 true,
1209 false,
1210 !s->permissions_start_only,
1211 !s->root_directory_start_only,
1212 &s->control_pid)) < 0)
034c6ed7
LP		 1213 goto fail;
1214
d6ea93e3
LP		 1215 service_set_state(s, SERVICE_RELOAD);
1216
1217 if (!s->control_command)
034c6ed7
LP		 1218 service_set_state(s, SERVICE_RUNNING);
1219
1220 return;
1221
1222fail:
87f0e418 1223 log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1224 service_enter_stop(s, false);
1225}
1226
1227static void service_run_next(Service *s, bool success) {
1228 int r;
1229
1230 assert(s);
1231 assert(s->control_command);
1232 assert(s->control_command->command_next);
1233
1234 if (!success)
1235 s->failure = true;
1236
1237 s->control_command = s->control_command->command_next;
1238
81a2b7ce
LP		 1239 if ((r = service_spawn(s,
1240 s->control_command,
1241 true,
1242 false,
1243 !s->permissions_start_only,
1244 !s->root_directory_start_only,
1245 &s->control_pid)) < 0)
034c6ed7
LP		 1246 goto fail;
1247
1248 return;
1249
1250fail:
87f0e418 1251 log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1252
1253 if (s->state == SERVICE_STOP)
1254 service_enter_stop_post(s, false);
1255 else if (s->state == SERVICE_STOP_POST)
1256 service_enter_dead(s, false, true);
1257 else
1258 service_enter_stop(s, false);
5cb5a6ff
LP		 1259}
1260
87f0e418
LP		 1261static int service_start(Unit *u) {
1262 Service *s = SERVICE(u);
5cb5a6ff
LP		 1263
1264 assert(s);
1265
034c6ed7
LP		 1266 /* We cannot fulfill this request right now, try again later
1267 * please! */
1268 if (s->state == SERVICE_STOP ||
1269 s->state == SERVICE_STOP_SIGTERM ||
1270 s->state == SERVICE_STOP_SIGKILL ||
1271 s->state == SERVICE_STOP_POST ||
1272 s->state == SERVICE_FINAL_SIGTERM ||
1273 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1274 return -EAGAIN;
1275
034c6ed7
LP		 1276 /* Already on it! */
1277 if (s->state == SERVICE_START_PRE ||
1278 s->state == SERVICE_START ||
1279 s->state == SERVICE_START_POST)
1280 return 0;
1281
1282 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1283
1e2e8133
LP		 1284 /* Make sure we don't enter a busy loop of some kind. */
1285 if (!ratelimit_test(&s->ratelimit)) {
1286 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
1287 return -EAGAIN;
1288 }
1289
034c6ed7
LP		 1290 s->failure = false;
1291 s->main_pid_known = false;
1292
1293 service_enter_start_pre(s);
1294 return 0;
5cb5a6ff
LP		 1295}
1296
87f0e418
LP		 1297static int service_stop(Unit *u) {
1298 Service *s = SERVICE(u);
5cb5a6ff
LP		 1299
1300 assert(s);
1301
034c6ed7
LP		 1302 if (s->state == SERVICE_START_PRE ||
1303 s->state == SERVICE_START ||
1304 s->state == SERVICE_START_POST ||
1305 s->state == SERVICE_RELOAD)
1306 return -EAGAIN;
1307
1308 if (s->state == SERVICE_AUTO_RESTART) {
1309 service_set_state(s, SERVICE_DEAD);
1310 return 0;
1311 }
1312
1313 assert(s->state == SERVICE_RUNNING);
5cb5a6ff 1314
034c6ed7 1315 service_enter_stop(s, true);
5cb5a6ff
LP		 1316 return 0;
1317}
1318
87f0e418
LP		 1319static int service_reload(Unit *u) {
1320 Service *s = SERVICE(u);
034c6ed7
LP		 1321
1322 assert(s);
1323
1324 assert(s->state == SERVICE_RUNNING);
1325
1326 service_enter_reload(s);
5cb5a6ff
LP		 1327 return 0;
1328}
1329
87f0e418
LP		 1330static bool service_can_reload(Unit *u) {
1331 Service *s = SERVICE(u);
034c6ed7
LP		 1332
1333 assert(s);
1334
1335 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1336}
1337
87f0e418
LP		 1338static UnitActiveState service_active_state(Unit *u) {
1339 assert(u);
5cb5a6ff 1340
acbb0225 1341 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1342}
1343
1344static int main_pid_good(Service *s) {
1345 assert(s);
1346
1347 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1348 * don't know */
1349
1350 /* If we know the pid file, then lets just check if it is
1351 * still valid */
1352 if (s->main_pid_known)
1353 return s->main_pid > 0;
1354
1355 /* We don't know the pid */
8e274523 1356 return -EAGAIN;
034c6ed7
LP		 1357}
1358
1359static bool control_pid_good(Service *s) {
1360 assert(s);
5cb5a6ff 1361
034c6ed7 1362 return s->control_pid > 0;
5cb5a6ff
LP		 1363}
1364
8e274523
LP		 1365static int cgroup_good(Service *s) {
1366 assert(s);
1367
1368 if (s->valid_no_process)
1369 return -EAGAIN;
1370
1371 return cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings);
1372}
1373
87f0e418
LP		 1374static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1375 Service *s = SERVICE(u);
034c6ed7 1376 bool success;
5cb5a6ff
LP		 1377
1378 assert(s);
034c6ed7
LP		 1379 assert(pid >= 0);
1380
bd982a8b 1381 success = code == CLD_EXITED && status == 0;
034c6ed7
LP		 1382 s->failure = s->failure || !success;
1383
1384 if (s->main_pid == pid) {
1385
1386 exec_status_fill(&s->main_exec_status, pid, code, status);
1387 s->main_pid = 0;
1388
7d55e835 1389 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
034c6ed7
LP		 1390 assert(s->exec_command[SERVICE_EXEC_START]);
1391 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1392 }
1393
94f04347 1394 log_debug("%s: main process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1395
1396 /* The service exited, so the service is officially
1397 * gone. */
1398
1399 switch (s->state) {
1400
1401 case SERVICE_START_POST:
1402 case SERVICE_RELOAD:
1403 case SERVICE_STOP:
1404 /* Need to wait until the operation is
1405 * done */
1406 break;
1407
7d55e835
LP		 1408 case SERVICE_START:
1409 assert(s->type == SERVICE_FINISH);
1410
1411 /* This was our main goal, so let's go on */
1412 if (success)
1413 service_enter_start_post(s);
1414 else
1415 service_enter_stop(s, false);
1416 break;
1417
034c6ed7
LP		 1418 case SERVICE_RUNNING:
1419 service_enter_stop(s, success);
1420 break;
1421
1422 case SERVICE_STOP_SIGTERM:
1423 case SERVICE_STOP_SIGKILL:
1424
1425 if (!control_pid_good(s))
1426 service_enter_stop_post(s, success);
5cb5a6ff 1427
034c6ed7
LP		 1428 /* If there is still a control process, wait for that first */
1429 break;
5cb5a6ff 1430
034c6ed7
LP		 1431 default:
1432 assert_not_reached("Uh, main process died at wrong time.");
1433 }
5cb5a6ff 1434
034c6ed7
LP		 1435 } else if (s->control_pid == pid) {
1436 assert(s->control_command);
1437
1438 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1439 s->control_pid = 0;
1440
94f04347 1441 log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1442
1443 /* If we are shutting things down anyway we
1444 * don't care about failing commands. */
1445
1446 if (s->control_command->command_next &&
b866264a 1447 (success || (s->state == SERVICE_STOP || s->state == SERVICE_STOP_POST)))
034c6ed7
LP		 1448
1449 /* There is another command to *
1450 * execute, so let's do that. */
1451
1452 service_run_next(s, success);
1453
1454 else {
1455 /* No further commands for this step, so let's
1456 * figure out what to do next */
1457
94f04347 1458 log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
bd982a8b 1459
034c6ed7
LP		 1460 switch (s->state) {
1461
1462 case SERVICE_START_PRE:
1463 if (success)
1464 service_enter_start(s);
1465 else
1466 service_enter_stop(s, false);
1467 break;
1468
1469 case SERVICE_START:
1470 assert(s->type == SERVICE_FORKING);
1471
1472 /* Let's try to load the pid
1473 * file here if we can. We
1474 * ignore the return value,
1475 * since the PID file might
1476 * actually be created by a
1477 * START_POST script */
1478
1479 if (success) {
1480 if (s->pid_file)
1481 service_load_pid_file(s);
1482
1483 service_enter_start_post(s);
1484 } else
1485 service_enter_stop(s, false);
1486
1487 break;
1488
1489 case SERVICE_START_POST:
1490 if (success && s->pid_file && !s->main_pid_known) {
1491 int r;
1492
1493 /* Hmm, let's see if we can
1494 * load the pid now after the
1495 * start-post scripts got
1496 * executed. */
1497
1498 if ((r = service_load_pid_file(s)) < 0)
87f0e418 1499 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
034c6ed7
LP		 1500 }
1501
1502 /* Fall through */
1503
1504 case SERVICE_RELOAD:
1505 if (success) {
8e274523 1506 if (main_pid_good(s) != 0 && cgroup_good(s) != 0)
034c6ed7
LP		 1507 service_set_state(s, SERVICE_RUNNING);
1508 else
1509 service_enter_stop(s, true);
1510 } else
1511 service_enter_stop(s, false);
1512
1513 break;
1514
1515 case SERVICE_STOP:
1516 if (main_pid_good(s) > 0)
1517 /* Still not dead and we know the PID? Let's go hunting. */
1518 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
1519 else
1520 service_enter_stop_post(s, success);
1521 break;
1522
1523 case SERVICE_STOP_SIGTERM:
1524 case SERVICE_STOP_SIGKILL:
1525 if (main_pid_good(s) <= 0)
1526 service_enter_stop_post(s, success);
1527
1528 /* If there is still a service
1529 * process around, wait until
1530 * that one quit, too */
1531 break;
1532
1533 case SERVICE_STOP_POST:
1534 case SERVICE_FINAL_SIGTERM:
1535 case SERVICE_FINAL_SIGKILL:
1536 service_enter_dead(s, success, true);
1537 break;
1538
1539 default:
1540 assert_not_reached("Uh, control process died at wrong time.");
1541 }
1542 }
1543 } else
1544 assert_not_reached("Got SIGCHLD for unkown PID");
1545}
1546
acbb0225 1547static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 1548 Service *s = SERVICE(u);
034c6ed7
LP		 1549
1550 assert(s);
1551 assert(elapsed == 1);
1552
acbb0225 1553 assert(w == &s->timer_watch);
034c6ed7
LP		 1554
1555 switch (s->state) {
1556
1557 case SERVICE_START_PRE:
1558 case SERVICE_START:
1559 case SERVICE_START_POST:
1560 case SERVICE_RELOAD:
87f0e418 1561 log_warning("%s operation timed out. Stopping.", unit_id(u));
034c6ed7
LP		 1562 service_enter_stop(s, false);
1563 break;
1564
1565 case SERVICE_STOP:
87f0e418 1566 log_warning("%s stopping timed out. Terminating.", unit_id(u));
034c6ed7
LP		 1567 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1568 break;
1569
1570 case SERVICE_STOP_SIGTERM:
87f0e418 1571 log_warning("%s stopping timed out. Killing.", unit_id(u));
034c6ed7
LP		 1572 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
1573 break;
1574
1575 case SERVICE_STOP_SIGKILL:
1576 /* Uh, wie sent a SIGKILL and it is still not gone?
1577 * Must be something we cannot kill, so let's just be
1578 * weirded out and continue */
1579
87f0e418 1580 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
034c6ed7
LP		 1581 service_enter_stop_post(s, false);
1582 break;
1583
1584 case SERVICE_STOP_POST:
87f0e418 1585 log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
034c6ed7
LP		 1586 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1587 break;
1588
1589 case SERVICE_FINAL_SIGTERM:
87f0e418 1590 log_warning("%s stopping timed out (2). Killing.", unit_id(u));
034c6ed7
LP		 1591 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
1592 break;
1593
1594 case SERVICE_FINAL_SIGKILL:
87f0e418 1595 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
034c6ed7
LP		 1596 service_enter_dead(s, false, true);
1597 break;
1598
1599 case SERVICE_AUTO_RESTART:
87f0e418 1600 log_debug("%s holdoff time over, scheduling restart.", unit_id(u));
034c6ed7
LP		 1601 service_enter_restart(s);
1602 break;
1603
1604 default:
1605 assert_not_reached("Timeout at wrong time.");
1606 }
5cb5a6ff
LP		 1607}
1608
8e274523
LP		 1609static void service_cgroup_notify_event(Unit *u) {
1610 Service *s = SERVICE(u);
1611
1612 assert(u);
1613
1614 log_debug("%s: cgroup is empty", unit_id(u));
1615
1616 switch (s->state) {
1617
1618 /* Waiting for SIGCHLD is usually more interesting,
1619 * because it includes return codes/signals. Which is
1620 * why we ignore the cgroup events for most cases,
1621 * except when we don't know pid which to expect the
1622 * SIGCHLD for. */
1623
1624 case SERVICE_RUNNING:
1625
1626 if (!s->valid_no_process && main_pid_good(s) <= 0)
1627 service_enter_stop(s, true);
1628
1629 break;
1630
1631 default:
1632 ;
1633 }
1634}
1635
2c4104f0
LP		 1636static int service_enumerate(Manager *m) {
1637
1638 static const char * const rcnd[] = {
1639 "../rc0.d", SPECIAL_RUNLEVEL0_TARGET,
1640 "../rc1.d", SPECIAL_RUNLEVEL1_TARGET,
1641 "../rc2.d", SPECIAL_RUNLEVEL2_TARGET,
1642 "../rc3.d", SPECIAL_RUNLEVEL3_TARGET,
1643 "../rc4.d", SPECIAL_RUNLEVEL4_TARGET,
1644 "../rc5.d", SPECIAL_RUNLEVEL5_TARGET,
1645 "../rc6.d", SPECIAL_RUNLEVEL6_TARGET
1646 };
1647
1648 char **p;
1649 unsigned i;
1650 DIR *d = NULL;
1651 char *path = NULL, *fpath = NULL, *name = NULL;
1652 int r;
1653
1654 assert(m);
1655
1656 STRV_FOREACH(p, m->sysvinit_path)
1657 for (i = 0; i < ELEMENTSOF(rcnd); i += 2) {
1658 struct dirent *de;
1659
1660 free(path);
1661 path = NULL;
1662 if (asprintf(&path, "%s/%s", *p, rcnd[i]) < 0) {
1663 r = -ENOMEM;
1664 goto finish;
1665 }
1666
1667 if (d)
1668 closedir(d);
1669
1670 if (!(d = opendir(path))) {
1671 if (errno != ENOENT)
1672 log_warning("opendir() failed on %s: %s", path, strerror(errno));
1673
1674 continue;
1675 }
1676
1677 while ((de = readdir(d))) {
1678 Unit *runlevel, *service;
1679
1680 if (ignore_file(de->d_name))
1681 continue;
1682
1683 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
1684 continue;
1685
1686 if (strlen(de->d_name) < 4)
1687 continue;
1688
1689 free(fpath);
1690 fpath = NULL;
1691 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd[i], de->d_name) < 0) {
1692 r = -ENOMEM;
1693 goto finish;
1694 }
1695
1696 if (access(fpath, X_OK) < 0) {
1697
1698 if (errno != ENOENT)
1699 log_warning("access() failed on %s: %s", fpath, strerror(errno));
1700
1701 continue;
1702 }
1703
1704 free(name);
1705 name = NULL;
1706 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
1707 r = -ENOMEM;
1708 goto finish;
1709 }
1710
1711 if ((r = manager_load_unit(m, name, &service)) < 0)
1712 goto finish;
1713
2c4104f0
LP		 1714 if ((r = manager_load_unit(m, rcnd[i+1], &runlevel)) < 0)
1715 goto finish;
1716
1717 if (de->d_name[0] == 'S') {
1718 if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
1719 goto finish;
1720
1721 if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
1722 goto finish;
1723 } else {
1724 if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
1725 goto finish;
1726
1727 if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
1728 goto finish;
1729 }
1730 }
1731 }
1732
1733 r = 0;
1734
1735finish:
1736 free(path);
1737 free(fpath);
1738 free(name);
1739 closedir(d);
1740
1741 return r;
1742}
1743
94f04347
LP		 1744static const char* const service_state_table[_SERVICE_STATE_MAX] = {
1745 [SERVICE_DEAD] = "dead",
1746 [SERVICE_START_PRE] = "start-pre",
1747 [SERVICE_START] = "start",
1748 [SERVICE_START_POST] = "start-post",
1749 [SERVICE_RUNNING] = "running",
1750 [SERVICE_RELOAD] = "reload",
1751 [SERVICE_STOP] = "stop",
1752 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
1753 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
1754 [SERVICE_STOP_POST] = "stop-post",
1755 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
1756 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
1757 [SERVICE_MAINTAINANCE] = "maintainance",
1758 [SERVICE_AUTO_RESTART] = "auto-restart",
1759};
1760
1761DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
1762
1763static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
1764 [SERVICE_ONCE] = "once",
1765 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
1766 [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
1767};
1768
1769DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
1770
1771static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
1772 [SERVICE_FORKING] = "forking",
1773 [SERVICE_SIMPLE] = "simple",
1774 [SERVICE_FINISH] = "finish"
1775};
1776
1777DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
1778
1779static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
1780 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
1781 [SERVICE_EXEC_START] = "ExecStart",
1782 [SERVICE_EXEC_START_POST] = "ExecStartPost",
1783 [SERVICE_EXEC_RELOAD] = "ExecReload",
1784 [SERVICE_EXEC_STOP] = "ExecStop",
1785 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
1786};
1787
1788DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
1789
87f0e418 1790const UnitVTable service_vtable = {
5cb5a6ff
LP		 1791 .suffix = ".service",
1792
034c6ed7
LP		 1793 .init = service_init,
1794 .done = service_done,
1795
5cb5a6ff
LP		 1796 .dump = service_dump,
1797
1798 .start = service_start,
1799 .stop = service_stop,
1800 .reload = service_reload,
1801
034c6ed7
LP		 1802 .can_reload = service_can_reload,
1803
5cb5a6ff
LP		 1804 .active_state = service_active_state,
1805
034c6ed7
LP		 1806 .sigchld_event = service_sigchld_event,
1807 .timer_event = service_timer_event,
2c4104f0 1808
8e274523
LP		 1809 .cgroup_notify_empty = service_cgroup_notify_event,
1810
2c4104f0 1811 .enumerate = service_enumerate
5cb5a6ff 1812};
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