]> 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
cgroup: add cgroupsification
[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
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
373 r = unit_add_name(u, m);
374 free(m);
375
376 if (r < 0)
377 goto finish;
378 }
379
380 } else if (startswith(t, "Required-Start:") ||
381 startswith(t, "Should-Start:")) {
382 char *i, *w;
383 size_t z;
384
385 state = LSB;
386
387 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
388 char *n, *m;
389
390 if (!(n = strndup(w, z))) {
391 r = -ENOMEM;
392 goto finish;
393 }
394
395 r = sysv_translate_name(n, &m);
396 free(n);
397
398 if (r < 0)
399 goto finish;
400
401 if (r == 0)
402 continue;
403
404 if (!(r = unit_add_dependency_by_name(u, UNIT_AFTER, m)) < 0) {
405 free(m);
406 goto finish;
407 }
408
409 r = unit_add_dependency_by_name(
410 u,
411 startswith(t, "Required-Start:") ? UNIT_REQUIRES : UNIT_WANTS,
412 m);
413 free(m);
414
415 if (r < 0)
416 goto finish;
417 }
418
419 } else if (startswith(t, "Description:")) {
420 char *d;
421
422 state = LSB_DESCRIPTION;
423
424 if (!(d = strdup(strstrip(t+12)))) {
425 r = -ENOMEM;
426 goto finish;
427 }
428
429 free(u->meta.description);
430 u->meta.description = d;
431
432 } else if (startswith(t, "Short-Description:") && !u->meta.description) {
433 char *d;
434
435 /* We use the short description only
436 * if no long description is set. */
437
438 state = LSB;
439
440 if (!(d = strdup(strstrip(t+18)))) {
441 r = -ENOMEM;
442 goto finish;
443 }
444
445 free(u->meta.description);
446 u->meta.description = d;
447
448 } else if (state == LSB_DESCRIPTION) {
449
450 if (startswith(l, "#\t") || startswith(l, "# ")) {
451 char *d;
452
453 assert(u->meta.description);
454 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
455 r = -ENOMEM;
456 goto finish;
457 }
458
459 free(u->meta.description);
460 u->meta.description = d;
461 } else
462 state = LSB;
463 }
464 }
465 }
466
467 /* If the init script has no LSB header, then let's
468 * enforce the ordering via the chkconfig
469 * priorities */
470
471 if (!has_lsb)
472 if ((r = sysv_chkconfig_order(s)) < 0)
473 goto finish;
474
475 if ((r = sysv_exec_commands(s)) < 0)
476 goto finish;
477
478 r = 1;
479
480finish:
481
482 if (f)
483 fclose(f);
484
485 return r;
486}
487
488static int service_load_sysv_name(Service *s, const char *name) {
489 char **p;
490
491 assert(s);
492 assert(name);
493
494 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
495 char *path;
496 int r;
497
498 if (asprintf(&path, "%s/%s", *p, name) < 0)
499 return -ENOMEM;
500
501 assert(endswith(path, ".service"));
502 path[strlen(path)-8] = 0;
503
504 r = service_load_sysv_path(s, path);
505 free(path);
506
507 if (r >= 0)
508 return r;
509 }
510
511 return 0;
512}
513
5cb5a6ff 514static int service_load_sysv(Service *s) {
2c4104f0
LP		 515 const char *t;
516 Iterator i;
517 int r;
518
5cb5a6ff
LP		 519 assert(s);
520
521 /* Load service data from SysV init scripts, preferably with
522 * LSB headers ... */
523
2c4104f0
LP		 524 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
525 return 0;
526
527 if ((t = unit_id(UNIT(s))))
528 if ((r = service_load_sysv_name(s, t)) != 0)
529 return r;
530
531 SET_FOREACH(t, UNIT(s)->meta.names, i)
532 if ((r == service_load_sysv_name(s, t)) != 0)
533 return r;
534
535 return 0;
5cb5a6ff
LP		 536}
537
87f0e418 538static int service_init(Unit *u) {
5cb5a6ff 539 int r;
87f0e418 540 Service *s = SERVICE(u);
5cb5a6ff
LP		 541
542 assert(s);
543
034c6ed7
LP		 544 /* First, reset everything to the defaults, in case this is a
545 * reload */
546
547 s->type = 0;
548 s->restart = 0;
549
550 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
551 s->restart_usec = DEFAULT_RESTART_USEC;
552
553 exec_context_init(&s->exec_context);
554
acbb0225 555 s->timer_watch.type = WATCH_INVALID;
034c6ed7
LP		 556
557 s->state = SERVICE_DEAD;
5cb5a6ff 558
2c4104f0 559 s->sysv_start_priority = -1;
81a2b7ce
LP		 560 s->permissions_start_only = false;
561 s->root_directory_start_only = false;
2c4104f0 562
1e2e8133
LP		 563 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
564
5cb5a6ff 565 /* Load a .service file */
d46de8a1 566 if ((r = unit_load_fragment(u)) < 0) {
87f0e418 567 service_done(u);
5cb5a6ff 568 return r;
44d8db9e 569 }
5cb5a6ff 570
d46de8a1
LP		 571 /* Load a classic init script as a fallback, if we couldn*t find anything */
572 if (r == 0)
573 if ((r = service_load_sysv(s)) <= 0) {
574 service_done(u);
575 return r < 0 ? r : -ENOENT;
576 }
577
5cb5a6ff 578 /* Load dropin directory data */
87f0e418
LP		 579 if ((r = unit_load_dropin(u)) < 0) {
580 service_done(u);
5cb5a6ff 581 return r;
034c6ed7
LP		 582 }
583
8e274523
LP		 584 /* Add default cgroup */
585 if ((r = unit_add_default_cgroup(u)) < 0) {
586 service_done(u);
587 return r;
588 }
589
44d8db9e 590 return 0;
034c6ed7
LP		 591}
592
87f0e418 593static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 594
5cb5a6ff 595 ServiceExecCommand c;
87f0e418 596 Service *s = SERVICE(u);
47be870b
LP		 597 const char *prefix2;
598 char *p2;
5cb5a6ff
LP		 599
600 assert(s);
601
47be870b
LP		 602 p2 = strappend(prefix, "\t");
603 prefix2 = p2 ? p2 : prefix;
44d8db9e 604
5cb5a6ff 605 fprintf(f,
81a2b7ce
LP		 606 "%sService State: %s\n"
607 "%sPermissionsStartOnly: %s\n"
8e274523
LP		 608 "%sRootDirectoryStartOnly: %s\n"
609 "%sValidNoProcess: %s\n",
81a2b7ce
LP		 610 prefix, service_state_to_string(s->state),
611 prefix, yes_no(s->permissions_start_only),
8e274523
LP		 612 prefix, yes_no(s->root_directory_start_only),
613 prefix, yes_no(s->valid_no_process));
5cb5a6ff 614
034c6ed7
LP		 615 if (s->pid_file)
616 fprintf(f,
617 "%sPIDFile: %s\n",
618 prefix, s->pid_file);
619
620
5cb5a6ff
LP		 621 exec_context_dump(&s->exec_context, f, prefix);
622
623 for (c = 0; c < _SERVICE_EXEC_MAX; c++) {
5cb5a6ff 624
44d8db9e
LP		 625 if (!s->exec_command[c])
626 continue;
627
628 fprintf(f, "%s→ %s:\n",
94f04347 629 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 630
631 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 632 }
44d8db9e 633
2c4104f0
LP		 634 if (s->sysv_path)
635 fprintf(f,
636 "%sSysV Init Script Path: %s\n",
637 prefix, s->sysv_path);
638
639 if (s->sysv_start_priority >= 0)
640 fprintf(f,
641 "%sSysV Start Priority: %i\n",
642 prefix, s->sysv_start_priority);
643
47be870b 644 free(p2);
5cb5a6ff
LP		 645}
646
034c6ed7
LP		 647static int service_load_pid_file(Service *s) {
648 char *k;
649 unsigned long p;
650 int r;
651
652 assert(s);
653
654 if (s->main_pid_known)
655 return 0;
656
657 if (!s->pid_file)
658 return -ENOENT;
659
660 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
661 return r;
662
663 if ((r = safe_atolu(k, &p)) < 0) {
664 free(k);
665 return r;
666 }
667
668 if ((unsigned long) (pid_t) p != p)
669 return -ERANGE;
670
671 s->main_pid = p;
672 s->main_pid_known = true;
673
674 return 0;
675}
676
3e33402a
LP		 677static int service_get_sockets(Service *s, Set **_set) {
678 Set *set;
ceee3d82
LP		 679 Iterator i;
680 char *t;
3e33402a 681 int r;
ceee3d82
LP		 682
683 assert(s);
3e33402a
LP		 684 assert(_set);
685
686 /* Collects all Socket objects that belong to this
687 * service. Note that a service might have multiple sockets
688 * via multiple names. */
689
690 if (!(set = set_new(NULL, NULL)))
691 return -ENOMEM;
ceee3d82
LP		 692
693 SET_FOREACH(t, UNIT(s)->meta.names, i) {
694 char *k;
695 Unit *p;
696
697 /* Look for all socket objects that go by any of our
698 * units and collect their fds */
699
3e33402a
LP		 700 if (!(k = unit_name_change_suffix(t, ".socket"))) {
701 r = -ENOMEM;
702 goto fail;
703 }
ceee3d82
LP		 704
705 p = manager_get_unit(UNIT(s)->meta.manager, k);
706 free(k);
707
3e33402a 708 if (!p) continue;
ceee3d82 709
3e33402a
LP		 710 if ((r = set_put(set, p)) < 0)
711 goto fail;
ceee3d82
LP		 712 }
713
3e33402a
LP		 714 *_set = set;
715 return 0;
716
717fail:
718 set_free(set);
719 return r;
720}
721
722
723static int service_notify_sockets(Service *s) {
724 Iterator i;
725 Set *set;
47be870b 726 Socket *sock;
3e33402a
LP		 727 int r;
728
729 assert(s);
730
731 /* Notifies all our sockets when we die */
732
733 if ((r = service_get_sockets(s, &set)) < 0)
734 return r;
735
47be870b
LP		 736 SET_FOREACH(sock, set, i)
737 socket_notify_service_dead(sock);
3e33402a
LP		 738
739 set_free(set);
740
ceee3d82
LP		 741 return 0;
742}
743
034c6ed7
LP		 744static void service_set_state(Service *s, ServiceState state) {
745 ServiceState old_state;
5cb5a6ff
LP		 746 assert(s);
747
034c6ed7 748 old_state = s->state;
5cb5a6ff 749 s->state = state;
034c6ed7
LP		 750
751 if (state != SERVICE_START_PRE &&
752 state != SERVICE_START &&
753 state != SERVICE_START_POST &&
754 state != SERVICE_RELOAD &&
755 state != SERVICE_STOP &&
756 state != SERVICE_STOP_SIGTERM &&
757 state != SERVICE_STOP_SIGKILL &&
758 state != SERVICE_STOP_POST &&
759 state != SERVICE_FINAL_SIGTERM &&
760 state != SERVICE_FINAL_SIGKILL &&
761 state != SERVICE_AUTO_RESTART)
acbb0225 762 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 763
7d55e835
LP		 764 if (state != SERVICE_START &&
765 state != SERVICE_START_POST &&
034c6ed7
LP		 766 state != SERVICE_RUNNING &&
767 state != SERVICE_RELOAD &&
768 state != SERVICE_STOP &&
769 state != SERVICE_STOP_SIGTERM &&
770 state != SERVICE_STOP_SIGKILL)
acbb0225 771 if (s->main_pid > 0) {
87f0e418 772 unit_unwatch_pid(UNIT(s), s->main_pid);
034c6ed7
LP		 773 s->main_pid = 0;
774 }
775
776 if (state != SERVICE_START_PRE &&
777 state != SERVICE_START &&
778 state != SERVICE_START_POST &&
779 state != SERVICE_RELOAD &&
780 state != SERVICE_STOP &&
781 state != SERVICE_STOP_SIGTERM &&
782 state != SERVICE_STOP_SIGKILL &&
783 state != SERVICE_STOP_POST &&
784 state != SERVICE_FINAL_SIGTERM &&
785 state != SERVICE_FINAL_SIGKILL)
acbb0225 786 if (s->control_pid > 0) {
87f0e418 787 unit_unwatch_pid(UNIT(s), s->control_pid);
034c6ed7
LP		 788 s->control_pid = 0;
789 }
790
791 if (state != SERVICE_START_PRE &&
792 state != SERVICE_START &&
793 state != SERVICE_START_POST &&
794 state != SERVICE_RELOAD &&
795 state != SERVICE_STOP &&
796 state != SERVICE_STOP_POST)
797 s->control_command = NULL;
798
ceee3d82
LP		 799 if (state == SERVICE_DEAD ||
800 state == SERVICE_STOP ||
801 state == SERVICE_STOP_SIGTERM ||
802 state == SERVICE_STOP_SIGKILL ||
803 state == SERVICE_STOP_POST ||
804 state == SERVICE_FINAL_SIGTERM ||
805 state == SERVICE_FINAL_SIGKILL ||
806 state == SERVICE_MAINTAINANCE ||
807 state == SERVICE_AUTO_RESTART)
808 service_notify_sockets(s);
809
94f04347 810 log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 811
812 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 813}
814
44d8db9e
LP		 815static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
816 Iterator i;
817 int r;
818 int *rfds = NULL;
819 unsigned rn_fds = 0;
3e33402a 820 Set *set;
47be870b 821 Socket *sock;
44d8db9e
LP		 822
823 assert(s);
824 assert(fds);
825 assert(n_fds);
826
3e33402a
LP		 827 if ((r = service_get_sockets(s, &set)) < 0)
828 return r;
829
47be870b 830 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 831 int *cfds;
832 unsigned cn_fds;
833
47be870b 834 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 835 goto fail;
836
837 if (!cfds)
838 continue;
839
840 if (!rfds) {
841 rfds = cfds;
842 rn_fds = cn_fds;
843 } else {
844 int *t;
845
846 if (!(t = new(int, rn_fds+cn_fds))) {
847 free(cfds);
848 r = -ENOMEM;
849 goto fail;
850 }
851
852 memcpy(t, rfds, rn_fds);
853 memcpy(t+rn_fds, cfds, cn_fds);
854 free(rfds);
855 free(cfds);
856
857 rfds = t;
858 rn_fds = rn_fds+cn_fds;
859 }
860 }
861
862 *fds = rfds;
863 *n_fds = rn_fds;
3e33402a
LP		 864
865 set_free(set);
866
44d8db9e
LP		 867 return 0;
868
869fail:
3e33402a 870 set_free(set);
44d8db9e 871 free(rfds);
3e33402a 872
44d8db9e
LP		 873 return r;
874}
875
81a2b7ce
LP		 876static int service_spawn(
877 Service *s,
878 ExecCommand *c,
879 bool timeout,
880 bool pass_fds,
881 bool apply_permissions,
882 bool apply_chroot,
883 pid_t *_pid) {
884
034c6ed7
LP		 885 pid_t pid;
886 int r;
44d8db9e
LP		 887 int *fds = NULL;
888 unsigned n_fds = 0;
034c6ed7
LP		 889
890 assert(s);
891 assert(c);
892 assert(_pid);
893
44d8db9e
LP		 894 if (pass_fds)
895 if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
896 goto fail;
897
034c6ed7 898 if (timeout) {
acbb0225 899 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 900 goto fail;
901 } else
acbb0225 902 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 903
81a2b7ce
LP		 904 if ((r = exec_spawn(c,
905 &s->exec_context,
906 fds, n_fds,
907 apply_permissions,
908 apply_chroot,
8e274523 909 UNIT(s)->meta.cgroup_bondings,
81a2b7ce 910 &pid)) < 0)
034c6ed7
LP		 911 goto fail;
912
87f0e418 913 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 914 /* FIXME: we need to do something here */
915 goto fail;
916
44d8db9e 917 free(fds);
034c6ed7
LP		 918 *_pid = pid;
919
5cb5a6ff 920 return 0;
034c6ed7
LP		 921
922fail:
44d8db9e
LP		 923 free(fds);
924
034c6ed7 925 if (timeout)
acbb0225 926 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 927
928 return r;
929}
930
931static void service_enter_dead(Service *s, bool success, bool allow_restart) {
932 int r;
933 assert(s);
934
935 if (!success)
936 s->failure = true;
937
938 if (allow_restart &&
939 (s->restart == SERVICE_RESTART_ALWAYS ||
940 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
941
acbb0225 942 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 943 goto fail;
944
945 service_set_state(s, SERVICE_AUTO_RESTART);
946 } else
947 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
948
949 return;
950
951fail:
87f0e418 952 log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 953 service_enter_dead(s, false, false);
954}
955
956static void service_enter_signal(Service *s, ServiceState state, bool success);
957
958static void service_enter_stop_post(Service *s, bool success) {
959 int r;
960 assert(s);
961
962 if (!success)
963 s->failure = true;
964
d6ea93e3 965 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
81a2b7ce
LP		 966 if ((r = service_spawn(s,
967 s->control_command,
968 true,
969 false,
970 !s->permissions_start_only,
971 !s->root_directory_start_only,
972 &s->control_pid)) < 0)
034c6ed7
LP		 973 goto fail;
974
d6ea93e3
LP		 975
976 service_set_state(s, SERVICE_STOP_POST);
977
978 if (!s->control_command)
034c6ed7
LP		 979 service_enter_dead(s, true, true);
980
981 return;
982
983fail:
87f0e418 984 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 985 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
986}
987
988static void service_enter_signal(Service *s, ServiceState state, bool success) {
989 int r;
990 bool sent = false;
991
992 assert(s);
993
994 if (!success)
995 s->failure = true;
996
997 if (s->main_pid > 0 || s->control_pid > 0) {
998 int sig;
999
1000 sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1001
1002 r = 0;
1003 if (s->main_pid > 0) {
1004 if (kill(s->main_pid, sig) < 0 && errno != ESRCH)
1005 r = -errno;
1006 else
1007 sent = true;
1008 }
1009
1010 if (s->control_pid > 0) {
1011 if (kill(s->control_pid, sig) < 0 && errno != ESRCH)
1012 r = -errno;
1013 else
1014 sent = true;
1015 }
1016
1017 if (r < 0)
1018 goto fail;
d6ea93e3 1019 }
034c6ed7 1020
d6ea93e3
LP		 1021 service_set_state(s, state);
1022
1023 if (s->main_pid <= 0 && s->control_pid <= 0)
034c6ed7
LP		 1024 service_enter_dead(s, true, true);
1025
1026 return;
1027
1028fail:
87f0e418 1029 log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1030
1031 if (sent) {
1032 s->failure = true;
1033 service_set_state(s, state);
1034 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1035 service_enter_stop_post(s, false);
1036 else
1037 service_enter_dead(s, false, true);
1038}
1039
1040static void service_enter_stop(Service *s, bool success) {
1041 int r;
1042 assert(s);
1043
1044 if (!success)
1045 s->failure = true;
1046
d6ea93e3 1047 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
81a2b7ce
LP		 1048 if ((r = service_spawn(s,
1049 s->control_command,
1050 true,
1051 false,
1052 !s->permissions_start_only,
1053 !s->root_directory_start_only,
1054 &s->control_pid)) < 0)
034c6ed7
LP		 1055 goto fail;
1056
d6ea93e3
LP		 1057 service_set_state(s, SERVICE_STOP);
1058
1059 if (!s->control_command)
034c6ed7
LP		 1060 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1061
1062 return;
1063
1064fail:
87f0e418 1065 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1066 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1067}
1068
1069static void service_enter_start_post(Service *s) {
1070 int r;
1071 assert(s);
1072
d6ea93e3 1073 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST]))
81a2b7ce
LP		 1074 if ((r = service_spawn(s,
1075 s->control_command,
1076 true,
1077 false,
1078 !s->permissions_start_only,
1079 !s->root_directory_start_only,
1080 &s->control_pid)) < 0)
034c6ed7
LP		 1081 goto fail;
1082
d6ea93e3
LP		 1083
1084 service_set_state(s, SERVICE_START_POST);
1085
1086 if (!s->control_command)
034c6ed7
LP		 1087 service_set_state(s, SERVICE_RUNNING);
1088
1089 return;
1090
1091fail:
87f0e418 1092 log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1093 service_enter_stop(s, false);
1094}
1095
1096static void service_enter_start(Service *s) {
1097 pid_t pid;
1098 int r;
1099
1100 assert(s);
1101
1102 assert(s->exec_command[SERVICE_EXEC_START]);
1103 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1104
81a2b7ce
LP		 1105 if ((r = service_spawn(s,
1106 s->exec_command[SERVICE_EXEC_START],
1107 s->type == SERVICE_FORKING,
1108 true,
1109 true,
1110 true,
1111 &pid)) < 0)
034c6ed7
LP		 1112 goto fail;
1113
d6ea93e3
LP		 1114 service_set_state(s, SERVICE_START);
1115
034c6ed7
LP		 1116 if (s->type == SERVICE_SIMPLE) {
1117 /* For simple services we immediately start
1118 * the START_POST binaries. */
1119
1120 s->main_pid = pid;
1121 s->main_pid_known = true;
1122 service_enter_start_post(s);
1123
1124 } else if (s->type == SERVICE_FORKING) {
1125
1126 /* For forking services we wait until the start
1127 * process exited. */
1128
1129 s->control_pid = pid;
1130 s->control_command = s->exec_command[SERVICE_EXEC_START];
7d55e835
LP		 1131 } else if (s->type == SERVICE_FINISH) {
1132
1133 /* For finishing services we wait until the start
1134 * process exited, too, but it is our main process. */
1135
1136 s->main_pid = pid;
1137 s->control_command = s->exec_command[SERVICE_EXEC_START];
034c6ed7
LP		 1138 } else
1139 assert_not_reached("Unknown service type");
1140
1141 return;
1142
1143fail:
87f0e418 1144 log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1145 service_enter_stop(s, false);
1146}
1147
1148static void service_enter_start_pre(Service *s) {
1149 int r;
1150
1151 assert(s);
1152
d6ea93e3 1153 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
81a2b7ce
LP		 1154 if ((r = service_spawn(s,
1155 s->control_command,
1156 true,
1157 false,
1158 !s->permissions_start_only,
1159 !s->root_directory_start_only,
1160 &s->control_pid)) < 0)
034c6ed7
LP		 1161 goto fail;
1162
d6ea93e3
LP		 1163 service_set_state(s, SERVICE_START_PRE);
1164
1165 if (!s->control_command)
034c6ed7
LP		 1166 service_enter_start(s);
1167
1168 return;
1169
1170fail:
87f0e418 1171 log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1172 service_enter_dead(s, false, true);
1173}
1174
1175static void service_enter_restart(Service *s) {
1176 int r;
1177 assert(s);
1178
87f0e418 1179 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1180 goto fail;
1181
87f0e418 1182 log_debug("%s scheduled restart job.", unit_id(UNIT(s)));
034c6ed7
LP		 1183 service_enter_dead(s, true, false);
1184 return;
1185
1186fail:
1187
87f0e418 1188 log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1189 service_enter_dead(s, false, false);
1190}
1191
1192static void service_enter_reload(Service *s) {
1193 int r;
1194
1195 assert(s);
1196
d6ea93e3 1197 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
81a2b7ce
LP		 1198 if ((r = service_spawn(s,
1199 s->control_command,
1200 true,
1201 false,
1202 !s->permissions_start_only,
1203 !s->root_directory_start_only,
1204 &s->control_pid)) < 0)
034c6ed7
LP		 1205 goto fail;
1206
d6ea93e3
LP		 1207 service_set_state(s, SERVICE_RELOAD);
1208
1209 if (!s->control_command)
034c6ed7
LP		 1210 service_set_state(s, SERVICE_RUNNING);
1211
1212 return;
1213
1214fail:
87f0e418 1215 log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1216 service_enter_stop(s, false);
1217}
1218
1219static void service_run_next(Service *s, bool success) {
1220 int r;
1221
1222 assert(s);
1223 assert(s->control_command);
1224 assert(s->control_command->command_next);
1225
1226 if (!success)
1227 s->failure = true;
1228
1229 s->control_command = s->control_command->command_next;
1230
81a2b7ce
LP		 1231 if ((r = service_spawn(s,
1232 s->control_command,
1233 true,
1234 false,
1235 !s->permissions_start_only,
1236 !s->root_directory_start_only,
1237 &s->control_pid)) < 0)
034c6ed7
LP		 1238 goto fail;
1239
1240 return;
1241
1242fail:
87f0e418 1243 log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1244
1245 if (s->state == SERVICE_STOP)
1246 service_enter_stop_post(s, false);
1247 else if (s->state == SERVICE_STOP_POST)
1248 service_enter_dead(s, false, true);
1249 else
1250 service_enter_stop(s, false);
5cb5a6ff
LP		 1251}
1252
87f0e418
LP		 1253static int service_start(Unit *u) {
1254 Service *s = SERVICE(u);
5cb5a6ff
LP		 1255
1256 assert(s);
1257
034c6ed7
LP		 1258 /* We cannot fulfill this request right now, try again later
1259 * please! */
1260 if (s->state == SERVICE_STOP ||
1261 s->state == SERVICE_STOP_SIGTERM ||
1262 s->state == SERVICE_STOP_SIGKILL ||
1263 s->state == SERVICE_STOP_POST ||
1264 s->state == SERVICE_FINAL_SIGTERM ||
1265 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1266 return -EAGAIN;
1267
034c6ed7
LP		 1268 /* Already on it! */
1269 if (s->state == SERVICE_START_PRE ||
1270 s->state == SERVICE_START ||
1271 s->state == SERVICE_START_POST)
1272 return 0;
1273
1274 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1275
1e2e8133
LP		 1276 /* Make sure we don't enter a busy loop of some kind. */
1277 if (!ratelimit_test(&s->ratelimit)) {
1278 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
1279 return -EAGAIN;
1280 }
1281
034c6ed7
LP		 1282 s->failure = false;
1283 s->main_pid_known = false;
1284
1285 service_enter_start_pre(s);
1286 return 0;
5cb5a6ff
LP		 1287}
1288
87f0e418
LP		 1289static int service_stop(Unit *u) {
1290 Service *s = SERVICE(u);
5cb5a6ff
LP		 1291
1292 assert(s);
1293
034c6ed7
LP		 1294 if (s->state == SERVICE_START_PRE ||
1295 s->state == SERVICE_START ||
1296 s->state == SERVICE_START_POST ||
1297 s->state == SERVICE_RELOAD)
1298 return -EAGAIN;
1299
1300 if (s->state == SERVICE_AUTO_RESTART) {
1301 service_set_state(s, SERVICE_DEAD);
1302 return 0;
1303 }
1304
1305 assert(s->state == SERVICE_RUNNING);
5cb5a6ff 1306
034c6ed7 1307 service_enter_stop(s, true);
5cb5a6ff
LP		 1308 return 0;
1309}
1310
87f0e418
LP		 1311static int service_reload(Unit *u) {
1312 Service *s = SERVICE(u);
034c6ed7
LP		 1313
1314 assert(s);
1315
1316 assert(s->state == SERVICE_RUNNING);
1317
1318 service_enter_reload(s);
5cb5a6ff
LP		 1319 return 0;
1320}
1321
87f0e418
LP		 1322static bool service_can_reload(Unit *u) {
1323 Service *s = SERVICE(u);
034c6ed7
LP		 1324
1325 assert(s);
1326
1327 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1328}
1329
87f0e418
LP		 1330static UnitActiveState service_active_state(Unit *u) {
1331 assert(u);
5cb5a6ff 1332
acbb0225 1333 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1334}
1335
1336static int main_pid_good(Service *s) {
1337 assert(s);
1338
1339 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1340 * don't know */
1341
1342 /* If we know the pid file, then lets just check if it is
1343 * still valid */
1344 if (s->main_pid_known)
1345 return s->main_pid > 0;
1346
1347 /* We don't know the pid */
8e274523 1348 return -EAGAIN;
034c6ed7
LP		 1349}
1350
1351static bool control_pid_good(Service *s) {
1352 assert(s);
5cb5a6ff 1353
034c6ed7 1354 return s->control_pid > 0;
5cb5a6ff
LP		 1355}
1356
8e274523
LP		 1357static int cgroup_good(Service *s) {
1358 assert(s);
1359
1360 if (s->valid_no_process)
1361 return -EAGAIN;
1362
1363 return cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings);
1364}
1365
87f0e418
LP		 1366static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1367 Service *s = SERVICE(u);
034c6ed7 1368 bool success;
5cb5a6ff
LP		 1369
1370 assert(s);
034c6ed7
LP		 1371 assert(pid >= 0);
1372
bd982a8b 1373 success = code == CLD_EXITED && status == 0;
034c6ed7
LP		 1374 s->failure = s->failure || !success;
1375
1376 if (s->main_pid == pid) {
1377
1378 exec_status_fill(&s->main_exec_status, pid, code, status);
1379 s->main_pid = 0;
1380
7d55e835 1381 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
034c6ed7
LP		 1382 assert(s->exec_command[SERVICE_EXEC_START]);
1383 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1384 }
1385
94f04347 1386 log_debug("%s: main process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1387
1388 /* The service exited, so the service is officially
1389 * gone. */
1390
1391 switch (s->state) {
1392
1393 case SERVICE_START_POST:
1394 case SERVICE_RELOAD:
1395 case SERVICE_STOP:
1396 /* Need to wait until the operation is
1397 * done */
1398 break;
1399
7d55e835
LP		 1400 case SERVICE_START:
1401 assert(s->type == SERVICE_FINISH);
1402
1403 /* This was our main goal, so let's go on */
1404 if (success)
1405 service_enter_start_post(s);
1406 else
1407 service_enter_stop(s, false);
1408 break;
1409
034c6ed7
LP		 1410 case SERVICE_RUNNING:
1411 service_enter_stop(s, success);
1412 break;
1413
1414 case SERVICE_STOP_SIGTERM:
1415 case SERVICE_STOP_SIGKILL:
1416
1417 if (!control_pid_good(s))
1418 service_enter_stop_post(s, success);
5cb5a6ff 1419
034c6ed7
LP		 1420 /* If there is still a control process, wait for that first */
1421 break;
5cb5a6ff 1422
034c6ed7
LP		 1423 default:
1424 assert_not_reached("Uh, main process died at wrong time.");
1425 }
5cb5a6ff 1426
034c6ed7
LP		 1427 } else if (s->control_pid == pid) {
1428 assert(s->control_command);
1429
1430 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1431 s->control_pid = 0;
1432
94f04347 1433 log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1434
1435 /* If we are shutting things down anyway we
1436 * don't care about failing commands. */
1437
1438 if (s->control_command->command_next &&
1439 (success || (s->state == SERVICE_EXEC_STOP || s->state == SERVICE_EXEC_STOP_POST)))
1440
1441 /* There is another command to *
1442 * execute, so let's do that. */
1443
1444 service_run_next(s, success);
1445
1446 else {
1447 /* No further commands for this step, so let's
1448 * figure out what to do next */
1449
94f04347 1450 log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
bd982a8b 1451
034c6ed7
LP		 1452 switch (s->state) {
1453
1454 case SERVICE_START_PRE:
1455 if (success)
1456 service_enter_start(s);
1457 else
1458 service_enter_stop(s, false);
1459 break;
1460
1461 case SERVICE_START:
1462 assert(s->type == SERVICE_FORKING);
1463
1464 /* Let's try to load the pid
1465 * file here if we can. We
1466 * ignore the return value,
1467 * since the PID file might
1468 * actually be created by a
1469 * START_POST script */
1470
1471 if (success) {
1472 if (s->pid_file)
1473 service_load_pid_file(s);
1474
1475 service_enter_start_post(s);
1476 } else
1477 service_enter_stop(s, false);
1478
1479 break;
1480
1481 case SERVICE_START_POST:
1482 if (success && s->pid_file && !s->main_pid_known) {
1483 int r;
1484
1485 /* Hmm, let's see if we can
1486 * load the pid now after the
1487 * start-post scripts got
1488 * executed. */
1489
1490 if ((r = service_load_pid_file(s)) < 0)
87f0e418 1491 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
034c6ed7
LP		 1492 }
1493
1494 /* Fall through */
1495
1496 case SERVICE_RELOAD:
1497 if (success) {
8e274523 1498 if (main_pid_good(s) != 0 && cgroup_good(s) != 0)
034c6ed7
LP		 1499 service_set_state(s, SERVICE_RUNNING);
1500 else
1501 service_enter_stop(s, true);
1502 } else
1503 service_enter_stop(s, false);
1504
1505 break;
1506
1507 case SERVICE_STOP:
1508 if (main_pid_good(s) > 0)
1509 /* Still not dead and we know the PID? Let's go hunting. */
1510 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
1511 else
1512 service_enter_stop_post(s, success);
1513 break;
1514
1515 case SERVICE_STOP_SIGTERM:
1516 case SERVICE_STOP_SIGKILL:
1517 if (main_pid_good(s) <= 0)
1518 service_enter_stop_post(s, success);
1519
1520 /* If there is still a service
1521 * process around, wait until
1522 * that one quit, too */
1523 break;
1524
1525 case SERVICE_STOP_POST:
1526 case SERVICE_FINAL_SIGTERM:
1527 case SERVICE_FINAL_SIGKILL:
1528 service_enter_dead(s, success, true);
1529 break;
1530
1531 default:
1532 assert_not_reached("Uh, control process died at wrong time.");
1533 }
1534 }
1535 } else
1536 assert_not_reached("Got SIGCHLD for unkown PID");
1537}
1538
acbb0225 1539static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 1540 Service *s = SERVICE(u);
034c6ed7
LP		 1541
1542 assert(s);
1543 assert(elapsed == 1);
1544
acbb0225 1545 assert(w == &s->timer_watch);
034c6ed7
LP		 1546
1547 switch (s->state) {
1548
1549 case SERVICE_START_PRE:
1550 case SERVICE_START:
1551 case SERVICE_START_POST:
1552 case SERVICE_RELOAD:
87f0e418 1553 log_warning("%s operation timed out. Stopping.", unit_id(u));
034c6ed7
LP		 1554 service_enter_stop(s, false);
1555 break;
1556
1557 case SERVICE_STOP:
87f0e418 1558 log_warning("%s stopping timed out. Terminating.", unit_id(u));
034c6ed7
LP		 1559 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1560 break;
1561
1562 case SERVICE_STOP_SIGTERM:
87f0e418 1563 log_warning("%s stopping timed out. Killing.", unit_id(u));
034c6ed7
LP		 1564 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
1565 break;
1566
1567 case SERVICE_STOP_SIGKILL:
1568 /* Uh, wie sent a SIGKILL and it is still not gone?
1569 * Must be something we cannot kill, so let's just be
1570 * weirded out and continue */
1571
87f0e418 1572 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
034c6ed7
LP		 1573 service_enter_stop_post(s, false);
1574 break;
1575
1576 case SERVICE_STOP_POST:
87f0e418 1577 log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
034c6ed7
LP		 1578 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1579 break;
1580
1581 case SERVICE_FINAL_SIGTERM:
87f0e418 1582 log_warning("%s stopping timed out (2). Killing.", unit_id(u));
034c6ed7
LP		 1583 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
1584 break;
1585
1586 case SERVICE_FINAL_SIGKILL:
87f0e418 1587 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
034c6ed7
LP		 1588 service_enter_dead(s, false, true);
1589 break;
1590
1591 case SERVICE_AUTO_RESTART:
87f0e418 1592 log_debug("%s holdoff time over, scheduling restart.", unit_id(u));
034c6ed7
LP		 1593 service_enter_restart(s);
1594 break;
1595
1596 default:
1597 assert_not_reached("Timeout at wrong time.");
1598 }
5cb5a6ff
LP		 1599}
1600
8e274523
LP		 1601static void service_cgroup_notify_event(Unit *u) {
1602 Service *s = SERVICE(u);
1603
1604 assert(u);
1605
1606 log_debug("%s: cgroup is empty", unit_id(u));
1607
1608 switch (s->state) {
1609
1610 /* Waiting for SIGCHLD is usually more interesting,
1611 * because it includes return codes/signals. Which is
1612 * why we ignore the cgroup events for most cases,
1613 * except when we don't know pid which to expect the
1614 * SIGCHLD for. */
1615
1616 case SERVICE_RUNNING:
1617
1618 if (!s->valid_no_process && main_pid_good(s) <= 0)
1619 service_enter_stop(s, true);
1620
1621 break;
1622
1623 default:
1624 ;
1625 }
1626}
1627
2c4104f0
LP		 1628static int service_enumerate(Manager *m) {
1629
1630 static const char * const rcnd[] = {
1631 "../rc0.d", SPECIAL_RUNLEVEL0_TARGET,
1632 "../rc1.d", SPECIAL_RUNLEVEL1_TARGET,
1633 "../rc2.d", SPECIAL_RUNLEVEL2_TARGET,
1634 "../rc3.d", SPECIAL_RUNLEVEL3_TARGET,
1635 "../rc4.d", SPECIAL_RUNLEVEL4_TARGET,
1636 "../rc5.d", SPECIAL_RUNLEVEL5_TARGET,
1637 "../rc6.d", SPECIAL_RUNLEVEL6_TARGET
1638 };
1639
1640 char **p;
1641 unsigned i;
1642 DIR *d = NULL;
1643 char *path = NULL, *fpath = NULL, *name = NULL;
1644 int r;
1645
1646 assert(m);
1647
1648 STRV_FOREACH(p, m->sysvinit_path)
1649 for (i = 0; i < ELEMENTSOF(rcnd); i += 2) {
1650 struct dirent *de;
1651
1652 free(path);
1653 path = NULL;
1654 if (asprintf(&path, "%s/%s", *p, rcnd[i]) < 0) {
1655 r = -ENOMEM;
1656 goto finish;
1657 }
1658
1659 if (d)
1660 closedir(d);
1661
1662 if (!(d = opendir(path))) {
1663 if (errno != ENOENT)
1664 log_warning("opendir() failed on %s: %s", path, strerror(errno));
1665
1666 continue;
1667 }
1668
1669 while ((de = readdir(d))) {
1670 Unit *runlevel, *service;
1671
1672 if (ignore_file(de->d_name))
1673 continue;
1674
1675 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
1676 continue;
1677
1678 if (strlen(de->d_name) < 4)
1679 continue;
1680
1681 free(fpath);
1682 fpath = NULL;
1683 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd[i], de->d_name) < 0) {
1684 r = -ENOMEM;
1685 goto finish;
1686 }
1687
1688 if (access(fpath, X_OK) < 0) {
1689
1690 if (errno != ENOENT)
1691 log_warning("access() failed on %s: %s", fpath, strerror(errno));
1692
1693 continue;
1694 }
1695
1696 free(name);
1697 name = NULL;
1698 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
1699 r = -ENOMEM;
1700 goto finish;
1701 }
1702
1703 if ((r = manager_load_unit(m, name, &service)) < 0)
1704 goto finish;
1705
2c4104f0
LP		 1706 if ((r = manager_load_unit(m, rcnd[i+1], &runlevel)) < 0)
1707 goto finish;
1708
1709 if (de->d_name[0] == 'S') {
1710 if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
1711 goto finish;
1712
1713 if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
1714 goto finish;
1715 } else {
1716 if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
1717 goto finish;
1718
1719 if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
1720 goto finish;
1721 }
1722 }
1723 }
1724
1725 r = 0;
1726
1727finish:
1728 free(path);
1729 free(fpath);
1730 free(name);
1731 closedir(d);
1732
1733 return r;
1734}
1735
94f04347
LP		 1736static const char* const service_state_table[_SERVICE_STATE_MAX] = {
1737 [SERVICE_DEAD] = "dead",
1738 [SERVICE_START_PRE] = "start-pre",
1739 [SERVICE_START] = "start",
1740 [SERVICE_START_POST] = "start-post",
1741 [SERVICE_RUNNING] = "running",
1742 [SERVICE_RELOAD] = "reload",
1743 [SERVICE_STOP] = "stop",
1744 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
1745 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
1746 [SERVICE_STOP_POST] = "stop-post",
1747 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
1748 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
1749 [SERVICE_MAINTAINANCE] = "maintainance",
1750 [SERVICE_AUTO_RESTART] = "auto-restart",
1751};
1752
1753DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
1754
1755static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
1756 [SERVICE_ONCE] = "once",
1757 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
1758 [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
1759};
1760
1761DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
1762
1763static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
1764 [SERVICE_FORKING] = "forking",
1765 [SERVICE_SIMPLE] = "simple",
1766 [SERVICE_FINISH] = "finish"
1767};
1768
1769DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
1770
1771static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
1772 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
1773 [SERVICE_EXEC_START] = "ExecStart",
1774 [SERVICE_EXEC_START_POST] = "ExecStartPost",
1775 [SERVICE_EXEC_RELOAD] = "ExecReload",
1776 [SERVICE_EXEC_STOP] = "ExecStop",
1777 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
1778};
1779
1780DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
1781
87f0e418 1782const UnitVTable service_vtable = {
5cb5a6ff
LP		 1783 .suffix = ".service",
1784
034c6ed7
LP		 1785 .init = service_init,
1786 .done = service_done,
1787
5cb5a6ff
LP		 1788 .dump = service_dump,
1789
1790 .start = service_start,
1791 .stop = service_stop,
1792 .reload = service_reload,
1793
034c6ed7
LP		 1794 .can_reload = service_can_reload,
1795
5cb5a6ff
LP		 1796 .active_state = service_active_state,
1797
034c6ed7
LP		 1798 .sigchld_event = service_sigchld_event,
1799 .timer_event = service_timer_event,
2c4104f0 1800
8e274523
LP		 1801 .cgroup_notify_empty = service_cgroup_notify_event,
1802
2c4104f0 1803 .enumerate = service_enumerate
5cb5a6ff 1804};
Michael's branch of systemd.