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1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
2
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
22 #include <errno.h>
23 #include <signal.h>
24 #include <dirent.h>
25 #include <unistd.h>
26
27 #include "unit.h"
28 #include "service.h"
29 #include "load-fragment.h"
30 #include "load-dropin.h"
31 #include "log.h"
32 #include "strv.h"
33 #include "unit-name.h"
34 #include "dbus-service.h"
35
36 #define COMMENTS "#;\n"
37 #define NEWLINES "\n\r"
38 #define LINE_MAX 4096
39
40
41 typedef enum RunlevelType {
42 RUNLEVEL_UP,
43 RUNLEVEL_DOWN,
44 RUNLEVEL_BASIC
45 } RunlevelType;
46
47 static const struct {
48 const char *path;
49 const char *target;
50 const RunlevelType type;
51 } rcnd_table[] = {
52 { "/rc0.d", SPECIAL_RUNLEVEL0_TARGET, RUNLEVEL_DOWN },
53 { "/rc1.d", SPECIAL_RUNLEVEL1_TARGET, RUNLEVEL_UP },
54 { "/rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
55 { "/rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
56 { "/rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
57 { "/rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
58 { "/rc6.d", SPECIAL_RUNLEVEL6_TARGET, RUNLEVEL_DOWN },
59 { "/boot.d", SPECIAL_BASIC_TARGET, RUNLEVEL_BASIC },
60 };
61
62 #define RUNLEVELS_UP "12345"
63 #define RUNLEVELS_DOWN "06"
64
65 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
66 [SERVICE_DEAD] = UNIT_INACTIVE,
67 [SERVICE_START_PRE] = UNIT_ACTIVATING,
68 [SERVICE_START] = UNIT_ACTIVATING,
69 [SERVICE_START_POST] = UNIT_ACTIVATING,
70 [SERVICE_RUNNING] = UNIT_ACTIVE,
71 [SERVICE_EXITED] = UNIT_ACTIVE,
72 [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
73 [SERVICE_STOP] = UNIT_DEACTIVATING,
74 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
75 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
76 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
77 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
78 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
79 [SERVICE_MAINTAINANCE] = UNIT_INACTIVE,
80 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
81 };
82
83 static void service_init(Unit *u) {
84 Service *s = SERVICE(u);
85
86 assert(u);
87 assert(u->meta.load_state == UNIT_STUB);
88
89 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
90 s->restart_usec = DEFAULT_RESTART_USEC;
91 s->timer_watch.type = WATCH_INVALID;
92 s->sysv_start_priority = -1;
93 s->socket_fd = -1;
94
95 exec_context_init(&s->exec_context);
96
97 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
98
99 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
100 }
101
102 static void service_unwatch_control_pid(Service *s) {
103 assert(s);
104
105 if (s->control_pid <= 0)
106 return;
107
108 unit_unwatch_pid(UNIT(s), s->control_pid);
109 s->control_pid = 0;
110 }
111
112 static void service_unwatch_main_pid(Service *s) {
113 assert(s);
114
115 if (s->main_pid <= 0)
116 return;
117
118 unit_unwatch_pid(UNIT(s), s->main_pid);
119 s->main_pid = 0;
120 }
121
122 static void service_close_socket_fd(Service *s) {
123 assert(s);
124
125 if (s->socket_fd < 0)
126 return;
127
128 close_nointr_nofail(s->socket_fd);
129 s->socket_fd = -1;
130 }
131
132 static void service_done(Unit *u) {
133 Service *s = SERVICE(u);
134
135 assert(s);
136
137 free(s->pid_file);
138 s->pid_file = NULL;
139
140 free(s->sysv_path);
141 s->sysv_path = NULL;
142
143 free(s->sysv_runlevels);
144 s->sysv_runlevels = NULL;
145
146 exec_context_done(&s->exec_context);
147 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
148 s->control_command = NULL;
149
150 /* This will leak a process, but at least no memory or any of
151 * our resources */
152 service_unwatch_main_pid(s);
153 service_unwatch_control_pid(s);
154
155 if (s->bus_name) {
156 unit_unwatch_bus_name(UNIT(u), s->bus_name);
157 free(s->bus_name);
158 s->bus_name = NULL;
159 }
160
161 service_close_socket_fd(s);
162
163 unit_unwatch_timer(u, &s->timer_watch);
164 }
165
166 static int sysv_translate_name(const char *name, char **_r) {
167
168 static const char * const table[] = {
169 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
170 "$network", SPECIAL_NETWORK_TARGET,
171 "$named", SPECIAL_NSS_LOOKUP_TARGET,
172 "$portmap", SPECIAL_RPCBIND_TARGET,
173 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
174 "$syslog", SPECIAL_SYSLOG_TARGET,
175 "$time", SPECIAL_RTC_SET_TARGET
176 };
177
178 unsigned i;
179 char *r;
180
181 for (i = 0; i < ELEMENTSOF(table); i += 2)
182 if (streq(table[i], name)) {
183 if (!(r = strdup(table[i+1])))
184 return -ENOMEM;
185
186 goto finish;
187 }
188
189 if (*name == '$')
190 return 0;
191
192 if (asprintf(&r, "%s.service", name) < 0)
193 return -ENOMEM;
194
195 finish:
196
197 if (_r)
198 *_r = r;
199
200 return 1;
201 }
202
203 static int sysv_chkconfig_order(Service *s) {
204 Meta *other;
205 int r;
206
207 assert(s);
208
209 if (s->sysv_start_priority < 0)
210 return 0;
211
212 /* For each pair of services where at least one lacks a LSB
213 * header, we use the start priority value to order things. */
214
215 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
216 Service *t;
217 UnitDependency d;
218
219 t = (Service*) other;
220
221 if (s == t)
222 continue;
223
224 if (t->sysv_start_priority < 0)
225 continue;
226
227 /* If both units have modern headers we don't care
228 * about the priorities */
229 if ((!s->sysv_path || s->sysv_has_lsb) &&
230 (!t->sysv_path || t->sysv_has_lsb))
231 continue;
232
233 if (t->sysv_start_priority < s->sysv_start_priority)
234 d = UNIT_AFTER;
235 else if (t->sysv_start_priority > s->sysv_start_priority)
236 d = UNIT_BEFORE;
237 else
238 continue;
239
240 /* FIXME: Maybe we should compare the name here lexicographically? */
241
242 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
243 return r;
244 }
245
246 return 0;
247 }
248
249 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
250 ExecCommand *c;
251
252 if (!(c = new0(ExecCommand, 1)))
253 return NULL;
254
255 if (!(c->path = strdup(path))) {
256 free(c);
257 return NULL;
258 }
259
260 if (!(c->argv = strv_new(path, arg1, NULL))) {
261 free(c->path);
262 free(c);
263 return NULL;
264 }
265
266 return c;
267 }
268
269 static int sysv_exec_commands(Service *s) {
270 ExecCommand *c;
271
272 assert(s);
273 assert(s->sysv_path);
274
275 if (!(c = exec_command_new(s->sysv_path, "start")))
276 return -ENOMEM;
277 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
278
279 if (!(c = exec_command_new(s->sysv_path, "stop")))
280 return -ENOMEM;
281 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
282
283 if (!(c = exec_command_new(s->sysv_path, "reload")))
284 return -ENOMEM;
285 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
286
287 return 0;
288 }
289
290 static int service_load_sysv_path(Service *s, const char *path) {
291 FILE *f;
292 Unit *u;
293 unsigned line = 0;
294 int r;
295 enum {
296 NORMAL,
297 DESCRIPTION,
298 LSB,
299 LSB_DESCRIPTION
300 } state = NORMAL;
301
302 assert(s);
303 assert(path);
304
305 u = UNIT(s);
306
307 if (!(f = fopen(path, "re"))) {
308 r = errno == ENOENT ? 0 : -errno;
309 goto finish;
310 }
311
312 s->type = SERVICE_FORKING;
313 s->restart = SERVICE_ONCE;
314
315 free(s->sysv_path);
316 if (!(s->sysv_path = strdup(path))) {
317 r = -ENOMEM;
318 goto finish;
319 }
320
321 while (!feof(f)) {
322 char l[LINE_MAX], *t;
323
324 if (!fgets(l, sizeof(l), f)) {
325 if (feof(f))
326 break;
327
328 r = -errno;
329 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
330 goto finish;
331 }
332
333 line++;
334
335 t = strstrip(l);
336 if (*t != '#')
337 continue;
338
339 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
340 state = LSB;
341 s->sysv_has_lsb = true;
342 continue;
343 }
344
345 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
346 state = NORMAL;
347 continue;
348 }
349
350 t++;
351 t += strspn(t, WHITESPACE);
352
353 if (state == NORMAL) {
354
355 /* Try to parse Red Hat style chkconfig headers */
356
357 if (startswith(t, "chkconfig:")) {
358 int start_priority;
359 char runlevels[16], *k;
360
361 state = NORMAL;
362
363 if (sscanf(t+10, "%15s %i %*i",
364 runlevels,
365 &start_priority) != 2) {
366
367 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
368 continue;
369 }
370
371 if (start_priority < 0 || start_priority > 99)
372 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
373 else if (s->sysv_start_priority < 0)
374 s->sysv_start_priority = start_priority;
375
376 char_array_0(runlevels);
377 k = delete_chars(runlevels, WHITESPACE "-");
378
379 if (k[0]) {
380 char *d;
381
382 if (!(d = strdup(k))) {
383 r = -ENOMEM;
384 goto finish;
385 }
386
387 free(s->sysv_runlevels);
388 s->sysv_runlevels = d;
389 }
390
391 } else if (startswith(t, "description:")) {
392
393 size_t k = strlen(t);
394 char *d;
395
396 if (t[k-1] == '\\') {
397 state = DESCRIPTION;
398 t[k-1] = 0;
399 }
400
401 if (!(d = strdup(strstrip(t+12)))) {
402 r = -ENOMEM;
403 goto finish;
404 }
405
406 free(u->meta.description);
407 u->meta.description = d;
408
409 } else if (startswith(t, "pidfile:")) {
410
411 char *fn;
412
413 state = NORMAL;
414
415 fn = strstrip(t+8);
416 if (!path_is_absolute(fn)) {
417 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
418 continue;
419 }
420
421 if (!(fn = strdup(fn))) {
422 r = -ENOMEM;
423 goto finish;
424 }
425
426 free(s->pid_file);
427 s->pid_file = fn;
428 }
429
430 } else if (state == DESCRIPTION) {
431
432 /* Try to parse Red Hat style description
433 * continuation */
434
435 size_t k = strlen(t);
436 char *d;
437
438 if (t[k-1] == '\\')
439 t[k-1] = 0;
440 else
441 state = NORMAL;
442
443 assert(u->meta.description);
444 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
445 r = -ENOMEM;
446 goto finish;
447 }
448
449 free(u->meta.description);
450 u->meta.description = d;
451
452 } else if (state == LSB || state == LSB_DESCRIPTION) {
453
454 if (startswith(t, "Provides:")) {
455 char *i, *w;
456 size_t z;
457
458 state = LSB;
459
460 FOREACH_WORD(w, z, t+9, i) {
461 char *n, *m;
462
463 if (!(n = strndup(w, z))) {
464 r = -ENOMEM;
465 goto finish;
466 }
467
468 r = sysv_translate_name(n, &m);
469 free(n);
470
471 if (r < 0)
472 goto finish;
473
474 if (r == 0)
475 continue;
476
477 if (unit_name_to_type(m) == UNIT_SERVICE)
478 r = unit_add_name(u, m);
479 else {
480 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL, true)) >= 0)
481 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
482 }
483
484 free(m);
485
486 if (r < 0)
487 goto finish;
488 }
489
490 } else if (startswith(t, "Required-Start:") ||
491 startswith(t, "Should-Start:")) {
492 char *i, *w;
493 size_t z;
494
495 state = LSB;
496
497 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
498 char *n, *m;
499
500 if (!(n = strndup(w, z))) {
501 r = -ENOMEM;
502 goto finish;
503 }
504
505 r = sysv_translate_name(n, &m);
506 free(n);
507
508 if (r < 0)
509 goto finish;
510
511 if (r == 0)
512 continue;
513
514 r = unit_add_dependency_by_name(u, UNIT_AFTER, m, NULL, true);
515 free(m);
516
517 if (r < 0)
518 goto finish;
519 }
520 } else if (startswith(t, "Default-Start:")) {
521 char *k, *d;
522
523 state = LSB;
524
525 k = delete_chars(t+14, WHITESPACE "-");
526
527 if (k[0] != 0) {
528 if (!(d = strdup(k))) {
529 r = -ENOMEM;
530 goto finish;
531 }
532
533 free(s->sysv_runlevels);
534 s->sysv_runlevels = d;
535 }
536
537 } else if (startswith(t, "Description:")) {
538 char *d;
539
540 state = LSB_DESCRIPTION;
541
542 if (!(d = strdup(strstrip(t+12)))) {
543 r = -ENOMEM;
544 goto finish;
545 }
546
547 free(u->meta.description);
548 u->meta.description = d;
549
550 } else if (startswith(t, "Short-Description:") &&
551 !u->meta.description) {
552 char *d;
553
554 /* We use the short description only
555 * if no long description is set. */
556
557 state = LSB;
558
559 if (!(d = strdup(strstrip(t+18)))) {
560 r = -ENOMEM;
561 goto finish;
562 }
563
564 u->meta.description = d;
565
566 } else if (state == LSB_DESCRIPTION) {
567
568 if (startswith(l, "#\t") || startswith(l, "# ")) {
569 char *d;
570
571 assert(u->meta.description);
572 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
573 r = -ENOMEM;
574 goto finish;
575 }
576
577 free(u->meta.description);
578 u->meta.description = d;
579 } else
580 state = LSB;
581 }
582 }
583 }
584
585 /* If init scripts have no LSB header, then we enforce the
586 * ordering via the chkconfig priorities. We try to determine
587 * a priority for *all* init scripts here, since they are
588 * needed as soon as at least one non-LSB script is used. */
589
590 if (s->sysv_start_priority < 0)
591 log_warning("%s has neither a chkconfig header nor a directory link, cannot order unit!", u->meta.id);
592
593 if ((r = sysv_exec_commands(s)) < 0)
594 goto finish;
595
596 if (!s->sysv_runlevels || chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
597 /* If there a runlevels configured for this service
598 * but none of the standard ones, then we assume this
599 * is some special kind of service (which might be
600 * needed for early boot) and don't create any links
601 * to it. */
602
603 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0 ||
604 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
605 goto finish;
606
607 } else
608 /* Don't timeout special services during boot (like fsck) */
609 s->timeout_usec = 0;
610
611 /* Special setting for all SysV services */
612 s->valid_no_process = true;
613 s->kill_mode = KILL_PROCESS_GROUP;
614
615 u->meta.load_state = UNIT_LOADED;
616 r = 0;
617
618 finish:
619
620 if (f)
621 fclose(f);
622
623 return r;
624 }
625
626 static int service_load_sysv_name(Service *s, const char *name) {
627 char **p;
628
629 assert(s);
630 assert(name);
631
632 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
633 char *path;
634 int r;
635
636 if (asprintf(&path, "%s/%s", *p, name) < 0)
637 return -ENOMEM;
638
639 assert(endswith(path, ".service"));
640 path[strlen(path)-8] = 0;
641
642 r = service_load_sysv_path(s, path);
643 free(path);
644
645 if (r < 0)
646 return r;
647
648 if ((UNIT(s)->meta.load_state != UNIT_STUB))
649 break;
650 }
651
652 return 0;
653 }
654
655 static int service_load_sysv(Service *s) {
656 const char *t;
657 Iterator i;
658 int r;
659
660 assert(s);
661
662 /* Load service data from SysV init scripts, preferably with
663 * LSB headers ... */
664
665 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
666 return 0;
667
668 if ((t = UNIT(s)->meta.id))
669 if ((r = service_load_sysv_name(s, t)) < 0)
670 return r;
671
672 if (UNIT(s)->meta.load_state == UNIT_STUB)
673 SET_FOREACH(t, UNIT(s)->meta.names, i) {
674 if (t == UNIT(s)->meta.id)
675 continue;
676
677 if ((r == service_load_sysv_name(s, t)) < 0)
678 return r;
679
680 if (UNIT(s)->meta.load_state != UNIT_STUB)
681 break;
682 }
683
684 return 0;
685 }
686
687 static int service_add_bus_name(Service *s) {
688 char *n;
689 int r;
690
691 assert(s);
692 assert(s->bus_name);
693
694 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
695 return 0;
696
697 r = unit_merge_by_name(UNIT(s), n);
698 free(n);
699
700 return r;
701 }
702
703 static int service_verify(Service *s) {
704 assert(s);
705
706 if (UNIT(s)->meta.load_state != UNIT_LOADED)
707 return 0;
708
709 if (!s->exec_command[SERVICE_EXEC_START]) {
710 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
711 return -EINVAL;
712 }
713
714 if (s->type == SERVICE_DBUS && !s->bus_name) {
715 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
716 return -EINVAL;
717 }
718
719 return 0;
720 }
721
722 static int service_load(Unit *u) {
723 int r;
724 Service *s = SERVICE(u);
725
726 assert(s);
727
728 /* Load a .service file */
729 if ((r = unit_load_fragment(u)) < 0)
730 return r;
731
732 /* Load a classic init script as a fallback, if we couldn't find anything */
733 if (u->meta.load_state == UNIT_STUB)
734 if ((r = service_load_sysv(s)) < 0)
735 return r;
736
737 /* Still nothing found? Then let's give up */
738 if (u->meta.load_state == UNIT_STUB)
739 return -ENOENT;
740
741 /* We were able to load something, then let's add in the
742 * dropin directories. */
743 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
744 return r;
745
746 /* This is a new unit? Then let's add in some extras */
747 if (u->meta.load_state == UNIT_LOADED) {
748 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
749 return r;
750
751 if ((r = unit_add_default_cgroup(u)) < 0)
752 return r;
753
754 if ((r = sysv_chkconfig_order(s)) < 0)
755 return r;
756
757 if (s->bus_name) {
758 if ((r = service_add_bus_name(s)) < 0)
759 return r;
760
761 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
762 return r;
763 }
764 }
765
766 return service_verify(s);
767 }
768
769 static void service_dump(Unit *u, FILE *f, const char *prefix) {
770
771 ServiceExecCommand c;
772 Service *s = SERVICE(u);
773 const char *prefix2;
774 char *p2;
775
776 assert(s);
777
778 p2 = strappend(prefix, "\t");
779 prefix2 = p2 ? p2 : prefix;
780
781 fprintf(f,
782 "%sService State: %s\n"
783 "%sPermissionsStartOnly: %s\n"
784 "%sRootDirectoryStartOnly: %s\n"
785 "%sValidNoProcess: %s\n"
786 "%sKillMode: %s\n"
787 "%sType: %s\n",
788 prefix, service_state_to_string(s->state),
789 prefix, yes_no(s->permissions_start_only),
790 prefix, yes_no(s->root_directory_start_only),
791 prefix, yes_no(s->valid_no_process),
792 prefix, kill_mode_to_string(s->kill_mode),
793 prefix, service_type_to_string(s->type));
794
795 if (s->control_pid > 0)
796 fprintf(f,
797 "%sControl PID: %llu\n",
798 prefix, (unsigned long long) s->control_pid);
799
800 if (s->main_pid > 0)
801 fprintf(f,
802 "%sMain PID: %llu\n",
803 prefix, (unsigned long long) s->main_pid);
804
805 if (s->pid_file)
806 fprintf(f,
807 "%sPIDFile: %s\n",
808 prefix, s->pid_file);
809
810 if (s->bus_name)
811 fprintf(f,
812 "%sBusName: %s\n"
813 "%sBus Name Good: %s\n",
814 prefix, s->bus_name,
815 prefix, yes_no(s->bus_name_good));
816
817 exec_context_dump(&s->exec_context, f, prefix);
818
819 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
820
821 if (!s->exec_command[c])
822 continue;
823
824 fprintf(f, "%s-> %s:\n",
825 prefix, service_exec_command_to_string(c));
826
827 exec_command_dump_list(s->exec_command[c], f, prefix2);
828 }
829
830 if (s->sysv_path)
831 fprintf(f,
832 "%sSysV Init Script Path: %s\n"
833 "%sSysV Init Script has LSB Header: %s\n",
834 prefix, s->sysv_path,
835 prefix, yes_no(s->sysv_has_lsb));
836
837 if (s->sysv_start_priority >= 0)
838 fprintf(f,
839 "%sSysVStartPriority: %i\n",
840 prefix, s->sysv_start_priority);
841
842 if (s->sysv_runlevels)
843 fprintf(f, "%sSysVRunLevels: %s\n",
844 prefix, s->sysv_runlevels);
845
846 free(p2);
847 }
848
849 static int service_load_pid_file(Service *s) {
850 char *k;
851 unsigned long p;
852 int r;
853
854 assert(s);
855
856 if (s->main_pid_known)
857 return 0;
858
859 assert(s->main_pid <= 0);
860
861 if (!s->pid_file)
862 return -ENOENT;
863
864 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
865 return r;
866
867 if ((r = safe_atolu(k, &p)) < 0) {
868 free(k);
869 return r;
870 }
871
872 if ((unsigned long) (pid_t) p != p)
873 return -ERANGE;
874
875 if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
876 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
877 (unsigned long long) p, s->pid_file);
878 return -ESRCH;
879 }
880
881 if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
882 /* FIXME: we need to do something here */
883 return r;
884
885 s->main_pid = (pid_t) p;
886 s->main_pid_known = true;
887
888 return 0;
889 }
890
891 static int service_get_sockets(Service *s, Set **_set) {
892 Set *set;
893 Iterator i;
894 char *t;
895 int r;
896
897 assert(s);
898 assert(_set);
899
900 /* Collects all Socket objects that belong to this
901 * service. Note that a service might have multiple sockets
902 * via multiple names. */
903
904 if (!(set = set_new(NULL, NULL)))
905 return -ENOMEM;
906
907 SET_FOREACH(t, UNIT(s)->meta.names, i) {
908 char *k;
909 Unit *p;
910
911 /* Look for all socket objects that go by any of our
912 * units and collect their fds */
913
914 if (!(k = unit_name_change_suffix(t, ".socket"))) {
915 r = -ENOMEM;
916 goto fail;
917 }
918
919 p = manager_get_unit(UNIT(s)->meta.manager, k);
920 free(k);
921
922 if (!p)
923 continue;
924
925 if ((r = set_put(set, p)) < 0)
926 goto fail;
927 }
928
929 *_set = set;
930 return 0;
931
932 fail:
933 set_free(set);
934 return r;
935 }
936
937 static int service_notify_sockets_dead(Service *s) {
938 Iterator i;
939 Set *set;
940 Socket *sock;
941 int r;
942
943 assert(s);
944
945 /* Notifies all our sockets when we die */
946 if ((r = service_get_sockets(s, &set)) < 0)
947 return r;
948
949 SET_FOREACH(sock, set, i)
950 socket_notify_service_dead(sock);
951
952 set_free(set);
953
954 return 0;
955 }
956
957 static void service_set_state(Service *s, ServiceState state) {
958 ServiceState old_state;
959 assert(s);
960
961 old_state = s->state;
962 s->state = state;
963
964 if (state != SERVICE_START_PRE &&
965 state != SERVICE_START &&
966 state != SERVICE_START_POST &&
967 state != SERVICE_RELOAD &&
968 state != SERVICE_STOP &&
969 state != SERVICE_STOP_SIGTERM &&
970 state != SERVICE_STOP_SIGKILL &&
971 state != SERVICE_STOP_POST &&
972 state != SERVICE_FINAL_SIGTERM &&
973 state != SERVICE_FINAL_SIGKILL &&
974 state != SERVICE_AUTO_RESTART)
975 unit_unwatch_timer(UNIT(s), &s->timer_watch);
976
977 if (state != SERVICE_START &&
978 state != SERVICE_START_POST &&
979 state != SERVICE_RUNNING &&
980 state != SERVICE_RELOAD &&
981 state != SERVICE_STOP &&
982 state != SERVICE_STOP_SIGTERM &&
983 state != SERVICE_STOP_SIGKILL)
984 service_unwatch_main_pid(s);
985
986 if (state != SERVICE_START_PRE &&
987 state != SERVICE_START &&
988 state != SERVICE_START_POST &&
989 state != SERVICE_RELOAD &&
990 state != SERVICE_STOP &&
991 state != SERVICE_STOP_SIGTERM &&
992 state != SERVICE_STOP_SIGKILL &&
993 state != SERVICE_STOP_POST &&
994 state != SERVICE_FINAL_SIGTERM &&
995 state != SERVICE_FINAL_SIGKILL) {
996 service_unwatch_control_pid(s);
997 s->control_command = NULL;
998 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
999 }
1000
1001 if (state == SERVICE_DEAD ||
1002 state == SERVICE_STOP ||
1003 state == SERVICE_STOP_SIGTERM ||
1004 state == SERVICE_STOP_SIGKILL ||
1005 state == SERVICE_STOP_POST ||
1006 state == SERVICE_FINAL_SIGTERM ||
1007 state == SERVICE_FINAL_SIGKILL ||
1008 state == SERVICE_MAINTAINANCE ||
1009 state == SERVICE_AUTO_RESTART)
1010 service_notify_sockets_dead(s);
1011
1012 if (state != SERVICE_START_PRE &&
1013 state != SERVICE_START &&
1014 !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1015 service_close_socket_fd(s);
1016
1017 if (old_state != state)
1018 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1019
1020 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1021 }
1022
1023 static int service_coldplug(Unit *u) {
1024 Service *s = SERVICE(u);
1025 int r;
1026
1027 assert(s);
1028 assert(s->state == SERVICE_DEAD);
1029
1030 if (s->deserialized_state != s->state) {
1031
1032 if (s->deserialized_state == SERVICE_START_PRE ||
1033 s->deserialized_state == SERVICE_START ||
1034 s->deserialized_state == SERVICE_START_POST ||
1035 s->deserialized_state == SERVICE_RELOAD ||
1036 s->deserialized_state == SERVICE_STOP ||
1037 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1038 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1039 s->deserialized_state == SERVICE_STOP_POST ||
1040 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1041 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1042 s->deserialized_state == SERVICE_AUTO_RESTART) {
1043
1044 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1045 usec_t k;
1046
1047 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1048
1049 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1050 return r;
1051 }
1052 }
1053
1054 if ((s->deserialized_state == SERVICE_START &&
1055 (s->type == SERVICE_FORKING ||
1056 s->type == SERVICE_DBUS)) ||
1057 s->deserialized_state == SERVICE_START_POST ||
1058 s->deserialized_state == SERVICE_RUNNING ||
1059 s->deserialized_state == SERVICE_RELOAD ||
1060 s->deserialized_state == SERVICE_STOP ||
1061 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1062 s->deserialized_state == SERVICE_STOP_SIGKILL)
1063 if (s->main_pid > 0)
1064 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1065 return r;
1066
1067 if (s->deserialized_state == SERVICE_START_PRE ||
1068 s->deserialized_state == SERVICE_START ||
1069 s->deserialized_state == SERVICE_START_POST ||
1070 s->deserialized_state == SERVICE_RELOAD ||
1071 s->deserialized_state == SERVICE_STOP ||
1072 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1073 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1074 s->deserialized_state == SERVICE_STOP_POST ||
1075 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1076 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1077 if (s->control_pid > 0)
1078 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1079 return r;
1080
1081 service_set_state(s, s->deserialized_state);
1082 }
1083
1084 return 0;
1085 }
1086
1087 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1088 Iterator i;
1089 int r;
1090 int *rfds = NULL;
1091 unsigned rn_fds = 0;
1092 Set *set;
1093 Socket *sock;
1094
1095 assert(s);
1096 assert(fds);
1097 assert(n_fds);
1098
1099 if ((r = service_get_sockets(s, &set)) < 0)
1100 return r;
1101
1102 SET_FOREACH(sock, set, i) {
1103 int *cfds;
1104 unsigned cn_fds;
1105
1106 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1107 goto fail;
1108
1109 if (!cfds)
1110 continue;
1111
1112 if (!rfds) {
1113 rfds = cfds;
1114 rn_fds = cn_fds;
1115 } else {
1116 int *t;
1117
1118 if (!(t = new(int, rn_fds+cn_fds))) {
1119 free(cfds);
1120 r = -ENOMEM;
1121 goto fail;
1122 }
1123
1124 memcpy(t, rfds, rn_fds);
1125 memcpy(t+rn_fds, cfds, cn_fds);
1126 free(rfds);
1127 free(cfds);
1128
1129 rfds = t;
1130 rn_fds = rn_fds+cn_fds;
1131 }
1132 }
1133
1134 *fds = rfds;
1135 *n_fds = rn_fds;
1136
1137 set_free(set);
1138
1139 return 0;
1140
1141 fail:
1142 set_free(set);
1143 free(rfds);
1144
1145 return r;
1146 }
1147
1148 static int service_spawn(
1149 Service *s,
1150 ExecCommand *c,
1151 bool timeout,
1152 bool pass_fds,
1153 bool apply_permissions,
1154 bool apply_chroot,
1155 pid_t *_pid) {
1156
1157 pid_t pid;
1158 int r;
1159 int *fds = NULL;
1160 unsigned n_fds = 0;
1161 char **argv;
1162
1163 assert(s);
1164 assert(c);
1165 assert(_pid);
1166
1167 if (pass_fds) {
1168 if (s->socket_fd >= 0) {
1169 fds = &s->socket_fd;
1170 n_fds = 1;
1171 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
1172 goto fail;
1173 }
1174
1175 if (timeout && s->timeout_usec) {
1176 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1177 goto fail;
1178 } else
1179 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1180
1181 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1182 r = -ENOMEM;
1183 goto fail;
1184 }
1185
1186 r = exec_spawn(c,
1187 argv,
1188 &s->exec_context,
1189 fds, n_fds,
1190 apply_permissions,
1191 apply_chroot,
1192 UNIT(s)->meta.manager->confirm_spawn,
1193 UNIT(s)->meta.cgroup_bondings,
1194 &pid);
1195
1196 strv_free(argv);
1197 if (r < 0)
1198 goto fail;
1199
1200 if (fds) {
1201 if (s->socket_fd >= 0)
1202 service_close_socket_fd(s);
1203 else
1204 free(fds);
1205 }
1206
1207 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1208 /* FIXME: we need to do something here */
1209 goto fail;
1210
1211 *_pid = pid;
1212
1213 return 0;
1214
1215 fail:
1216 free(fds);
1217
1218 if (timeout)
1219 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1220
1221 return r;
1222 }
1223
1224 static int main_pid_good(Service *s) {
1225 assert(s);
1226
1227 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1228 * don't know */
1229
1230 /* If we know the pid file, then lets just check if it is
1231 * still valid */
1232 if (s->main_pid_known)
1233 return s->main_pid > 0;
1234
1235 /* We don't know the pid */
1236 return -EAGAIN;
1237 }
1238
1239 static int control_pid_good(Service *s) {
1240 assert(s);
1241
1242 return s->control_pid > 0;
1243 }
1244
1245 static int cgroup_good(Service *s) {
1246 int r;
1247
1248 assert(s);
1249
1250 if (s->valid_no_process)
1251 return -EAGAIN;
1252
1253 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1254 return r;
1255
1256 return !r;
1257 }
1258
1259 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1260 int r;
1261 assert(s);
1262
1263 if (!success)
1264 s->failure = true;
1265
1266 if (allow_restart &&
1267 s->allow_restart &&
1268 (s->restart == SERVICE_RESTART_ALWAYS ||
1269 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1270
1271 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1272 goto fail;
1273
1274 service_set_state(s, SERVICE_AUTO_RESTART);
1275 } else
1276 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1277
1278 return;
1279
1280 fail:
1281 log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
1282 service_enter_dead(s, false, false);
1283 }
1284
1285 static void service_enter_signal(Service *s, ServiceState state, bool success);
1286
1287 static void service_enter_stop_post(Service *s, bool success) {
1288 int r;
1289 assert(s);
1290
1291 if (!success)
1292 s->failure = true;
1293
1294 service_unwatch_control_pid(s);
1295
1296 s->control_command_id = SERVICE_EXEC_STOP_POST;
1297 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1298 if ((r = service_spawn(s,
1299 s->control_command,
1300 true,
1301 false,
1302 !s->permissions_start_only,
1303 !s->root_directory_start_only,
1304 &s->control_pid)) < 0)
1305 goto fail;
1306
1307
1308 service_set_state(s, SERVICE_STOP_POST);
1309 } else
1310 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1311
1312 return;
1313
1314 fail:
1315 log_warning("%s failed to run stop-post executable: %s", UNIT(s)->meta.id, strerror(-r));
1316 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1317 }
1318
1319 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1320 int r;
1321 bool sent = false;
1322
1323 assert(s);
1324
1325 if (!success)
1326 s->failure = true;
1327
1328 if (s->kill_mode != KILL_NONE) {
1329 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1330
1331 if (s->kill_mode == KILL_CONTROL_GROUP) {
1332
1333 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1334 if (r != -EAGAIN && r != -ESRCH)
1335 goto fail;
1336 } else
1337 sent = true;
1338 }
1339
1340 if (!sent) {
1341 r = 0;
1342
1343 if (s->main_pid > 0) {
1344 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1345 r = -errno;
1346 else
1347 sent = true;
1348 }
1349
1350 if (s->control_pid > 0) {
1351 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1352 r = -errno;
1353 else
1354 sent = true;
1355 }
1356
1357 if (r < 0)
1358 goto fail;
1359 }
1360 }
1361
1362 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
1363 if (s->timeout_usec > 0)
1364 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1365 goto fail;
1366
1367 service_set_state(s, state);
1368 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1369 service_enter_stop_post(s, true);
1370 else
1371 service_enter_dead(s, true, true);
1372
1373 return;
1374
1375 fail:
1376 log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
1377
1378 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1379 service_enter_stop_post(s, false);
1380 else
1381 service_enter_dead(s, false, true);
1382 }
1383
1384 static void service_enter_stop(Service *s, bool success) {
1385 int r;
1386 assert(s);
1387
1388 if (!success)
1389 s->failure = true;
1390
1391 service_unwatch_control_pid(s);
1392
1393 s->control_command_id = SERVICE_EXEC_STOP;
1394 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1395 if ((r = service_spawn(s,
1396 s->control_command,
1397 true,
1398 false,
1399 !s->permissions_start_only,
1400 !s->root_directory_start_only,
1401 &s->control_pid)) < 0)
1402 goto fail;
1403
1404 service_set_state(s, SERVICE_STOP);
1405 } else
1406 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1407
1408 return;
1409
1410 fail:
1411 log_warning("%s failed to run stop executable: %s", UNIT(s)->meta.id, strerror(-r));
1412 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1413 }
1414
1415 static void service_enter_running(Service *s, bool success) {
1416 assert(s);
1417
1418 if (!success)
1419 s->failure = true;
1420
1421 if (main_pid_good(s) != 0 &&
1422 cgroup_good(s) != 0 &&
1423 (s->bus_name_good || s->type != SERVICE_DBUS))
1424 service_set_state(s, SERVICE_RUNNING);
1425 else if (s->valid_no_process)
1426 service_set_state(s, SERVICE_EXITED);
1427 else
1428 service_enter_stop(s, true);
1429 }
1430
1431 static void service_enter_start_post(Service *s) {
1432 int r;
1433 assert(s);
1434
1435 service_unwatch_control_pid(s);
1436
1437 s->control_command_id = SERVICE_EXEC_START_POST;
1438 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1439 if ((r = service_spawn(s,
1440 s->control_command,
1441 true,
1442 false,
1443 !s->permissions_start_only,
1444 !s->root_directory_start_only,
1445 &s->control_pid)) < 0)
1446 goto fail;
1447
1448
1449 service_set_state(s, SERVICE_START_POST);
1450 } else
1451 service_enter_running(s, true);
1452
1453 return;
1454
1455 fail:
1456 log_warning("%s failed to run start-post executable: %s", UNIT(s)->meta.id, strerror(-r));
1457 service_enter_stop(s, false);
1458 }
1459
1460 static void service_enter_start(Service *s) {
1461 pid_t pid;
1462 int r;
1463
1464 assert(s);
1465
1466 assert(s->exec_command[SERVICE_EXEC_START]);
1467 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1468
1469 if (s->type == SERVICE_FORKING)
1470 service_unwatch_control_pid(s);
1471 else
1472 service_unwatch_main_pid(s);
1473
1474 if ((r = service_spawn(s,
1475 s->exec_command[SERVICE_EXEC_START],
1476 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS,
1477 true,
1478 true,
1479 true,
1480 &pid)) < 0)
1481 goto fail;
1482
1483 if (s->type == SERVICE_SIMPLE) {
1484 /* For simple services we immediately start
1485 * the START_POST binaries. */
1486
1487 s->main_pid = pid;
1488 s->main_pid_known = true;
1489
1490 service_enter_start_post(s);
1491
1492 } else if (s->type == SERVICE_FORKING) {
1493
1494 /* For forking services we wait until the start
1495 * process exited. */
1496
1497 s->control_pid = pid;
1498
1499 s->control_command_id = SERVICE_EXEC_START;
1500 s->control_command = s->exec_command[SERVICE_EXEC_START];
1501 service_set_state(s, SERVICE_START);
1502
1503 } else if (s->type == SERVICE_FINISH ||
1504 s->type == SERVICE_DBUS) {
1505
1506 /* For finishing services we wait until the start
1507 * process exited, too, but it is our main process. */
1508
1509 /* For D-Bus services we know the main pid right away,
1510 * but wait for the bus name to appear on the bus. */
1511
1512 s->main_pid = pid;
1513 s->main_pid_known = true;
1514
1515 service_set_state(s, SERVICE_START);
1516 } else
1517 assert_not_reached("Unknown service type");
1518
1519 return;
1520
1521 fail:
1522 log_warning("%s failed to run start exectuable: %s", UNIT(s)->meta.id, strerror(-r));
1523 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1524 }
1525
1526 static void service_enter_start_pre(Service *s) {
1527 int r;
1528
1529 assert(s);
1530
1531 service_unwatch_control_pid(s);
1532
1533 s->control_command_id = SERVICE_EXEC_START_PRE;
1534 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1535 if ((r = service_spawn(s,
1536 s->control_command,
1537 true,
1538 false,
1539 !s->permissions_start_only,
1540 !s->root_directory_start_only,
1541 &s->control_pid)) < 0)
1542 goto fail;
1543
1544 service_set_state(s, SERVICE_START_PRE);
1545 } else
1546 service_enter_start(s);
1547
1548 return;
1549
1550 fail:
1551 log_warning("%s failed to run start-pre executable: %s", UNIT(s)->meta.id, strerror(-r));
1552 service_enter_dead(s, false, true);
1553 }
1554
1555 static void service_enter_restart(Service *s) {
1556 int r;
1557 assert(s);
1558
1559 service_enter_dead(s, true, false);
1560
1561 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
1562 goto fail;
1563
1564 log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
1565 return;
1566
1567 fail:
1568
1569 log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
1570 service_enter_dead(s, false, false);
1571 }
1572
1573 static void service_enter_reload(Service *s) {
1574 int r;
1575
1576 assert(s);
1577
1578 service_unwatch_control_pid(s);
1579
1580 s->control_command_id = SERVICE_EXEC_RELOAD;
1581 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
1582 if ((r = service_spawn(s,
1583 s->control_command,
1584 true,
1585 false,
1586 !s->permissions_start_only,
1587 !s->root_directory_start_only,
1588 &s->control_pid)) < 0)
1589 goto fail;
1590
1591 service_set_state(s, SERVICE_RELOAD);
1592 } else
1593 service_enter_running(s, true);
1594
1595 return;
1596
1597 fail:
1598 log_warning("%s failed to run reload executable: %s", UNIT(s)->meta.id, strerror(-r));
1599 service_enter_stop(s, false);
1600 }
1601
1602 static void service_run_next(Service *s, bool success) {
1603 int r;
1604
1605 assert(s);
1606 assert(s->control_command);
1607 assert(s->control_command->command_next);
1608
1609 if (!success)
1610 s->failure = true;
1611
1612 s->control_command = s->control_command->command_next;
1613
1614 service_unwatch_control_pid(s);
1615
1616 if ((r = service_spawn(s,
1617 s->control_command,
1618 true,
1619 false,
1620 !s->permissions_start_only,
1621 !s->root_directory_start_only,
1622 &s->control_pid)) < 0)
1623 goto fail;
1624
1625 return;
1626
1627 fail:
1628 log_warning("%s failed to run spawn next executable: %s", UNIT(s)->meta.id, strerror(-r));
1629
1630 if (s->state == SERVICE_START_PRE)
1631 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1632 else if (s->state == SERVICE_STOP)
1633 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1634 else if (s->state == SERVICE_STOP_POST)
1635 service_enter_dead(s, false, true);
1636 else
1637 service_enter_stop(s, false);
1638 }
1639
1640 static int service_start(Unit *u) {
1641 Service *s = SERVICE(u);
1642
1643 assert(s);
1644
1645 /* We cannot fulfill this request right now, try again later
1646 * please! */
1647 if (s->state == SERVICE_STOP ||
1648 s->state == SERVICE_STOP_SIGTERM ||
1649 s->state == SERVICE_STOP_SIGKILL ||
1650 s->state == SERVICE_STOP_POST ||
1651 s->state == SERVICE_FINAL_SIGTERM ||
1652 s->state == SERVICE_FINAL_SIGKILL)
1653 return -EAGAIN;
1654
1655 /* Already on it! */
1656 if (s->state == SERVICE_START_PRE ||
1657 s->state == SERVICE_START ||
1658 s->state == SERVICE_START_POST)
1659 return 0;
1660
1661 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
1662
1663 /* Make sure we don't enter a busy loop of some kind. */
1664 if (!ratelimit_test(&s->ratelimit)) {
1665 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1666 return -EAGAIN;
1667 }
1668
1669 s->failure = false;
1670 s->main_pid_known = false;
1671 s->allow_restart = true;
1672
1673 service_enter_start_pre(s);
1674 return 0;
1675 }
1676
1677 static int service_stop(Unit *u) {
1678 Service *s = SERVICE(u);
1679
1680 assert(s);
1681
1682 /* Cannot do this now */
1683 if (s->state == SERVICE_START_PRE ||
1684 s->state == SERVICE_START ||
1685 s->state == SERVICE_START_POST ||
1686 s->state == SERVICE_RELOAD)
1687 return -EAGAIN;
1688
1689 /* Already on it */
1690 if (s->state == SERVICE_STOP ||
1691 s->state == SERVICE_STOP_SIGTERM ||
1692 s->state == SERVICE_STOP_SIGKILL ||
1693 s->state == SERVICE_STOP_POST ||
1694 s->state == SERVICE_FINAL_SIGTERM ||
1695 s->state == SERVICE_FINAL_SIGKILL)
1696 return 0;
1697
1698 if (s->state == SERVICE_AUTO_RESTART) {
1699 service_set_state(s, SERVICE_DEAD);
1700 return 0;
1701 }
1702
1703 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1704
1705 /* This is a user request, so don't do restarts on this
1706 * shutdown. */
1707 s->allow_restart = false;
1708
1709 service_enter_stop(s, true);
1710 return 0;
1711 }
1712
1713 static int service_reload(Unit *u) {
1714 Service *s = SERVICE(u);
1715
1716 assert(s);
1717
1718 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
1719
1720 service_enter_reload(s);
1721 return 0;
1722 }
1723
1724 static bool service_can_reload(Unit *u) {
1725 Service *s = SERVICE(u);
1726
1727 assert(s);
1728
1729 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1730 }
1731
1732 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1733 Service *s = SERVICE(u);
1734
1735 assert(u);
1736 assert(f);
1737 assert(fds);
1738
1739 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1740 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1741
1742 if (s->control_pid > 0)
1743 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) (s->control_pid));
1744
1745 if (s->main_pid > 0)
1746 unit_serialize_item_format(u, f, "main-pid", "%u", (unsigned) (s->main_pid));
1747
1748 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1749
1750 /* There's a minor uncleanliness here: if there are multiple
1751 * commands attached here, we will start from the first one
1752 * again */
1753 if (s->control_command_id >= 0)
1754 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
1755
1756 if (s->socket_fd >= 0) {
1757 int copy;
1758
1759 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1760 return copy;
1761
1762 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1763 }
1764
1765 return 0;
1766 }
1767
1768 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1769 Service *s = SERVICE(u);
1770 int r;
1771
1772 assert(u);
1773 assert(key);
1774 assert(value);
1775 assert(fds);
1776
1777 if (streq(key, "state")) {
1778 ServiceState state;
1779
1780 if ((state = service_state_from_string(value)) < 0)
1781 log_debug("Failed to parse state value %s", value);
1782 else
1783 s->deserialized_state = state;
1784 } else if (streq(key, "failure")) {
1785 int b;
1786
1787 if ((b = parse_boolean(value)) < 0)
1788 log_debug("Failed to parse failure value %s", value);
1789 else
1790 s->failure = b || s->failure;
1791 } else if (streq(key, "control-pid")) {
1792 unsigned pid;
1793
1794 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1795 log_debug("Failed to parse control-pid value %s", value);
1796 else
1797 s->control_pid = (pid_t) pid;
1798 } else if (streq(key, "main-pid")) {
1799 unsigned pid;
1800
1801 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1802 log_debug("Failed to parse main-pid value %s", value);
1803 else
1804 s->main_pid = (pid_t) pid;
1805 } else if (streq(key, "main-pid-known")) {
1806 int b;
1807
1808 if ((b = parse_boolean(value)) < 0)
1809 log_debug("Failed to parse main-pid-known value %s", value);
1810 else
1811 s->main_pid_known = b;
1812 } else if (streq(key, "control-command")) {
1813 ServiceExecCommand id;
1814
1815 if ((id = service_exec_command_from_string(value)) < 0)
1816 log_debug("Failed to parse exec-command value %s", value);
1817 else {
1818 s->control_command_id = id;
1819 s->control_command = s->exec_command[id];
1820 }
1821 } else if (streq(key, "socket-fd")) {
1822 int fd;
1823
1824 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1825 log_debug("Failed to parse socket-fd value %s", value);
1826 else {
1827
1828 if (s->socket_fd >= 0)
1829 close_nointr_nofail(s->socket_fd);
1830 s->socket_fd = fdset_remove(fds, fd);
1831 }
1832 } else
1833 log_debug("Unknown serialization key '%s'", key);
1834
1835 return 0;
1836 }
1837
1838 static UnitActiveState service_active_state(Unit *u) {
1839 assert(u);
1840
1841 return state_translation_table[SERVICE(u)->state];
1842 }
1843
1844 static const char *service_sub_state_to_string(Unit *u) {
1845 assert(u);
1846
1847 return service_state_to_string(SERVICE(u)->state);
1848 }
1849
1850 static bool service_check_gc(Unit *u) {
1851 Service *s = SERVICE(u);
1852
1853 assert(s);
1854
1855 return !!s->sysv_path;
1856 }
1857
1858 static bool service_check_snapshot(Unit *u) {
1859 Service *s = SERVICE(u);
1860
1861 assert(s);
1862
1863 return !s->got_socket_fd;
1864 }
1865
1866 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1867 Service *s = SERVICE(u);
1868 bool success;
1869
1870 assert(s);
1871 assert(pid >= 0);
1872
1873 success = code == CLD_EXITED && status == 0;
1874 s->failure = s->failure || !success;
1875
1876 if (s->main_pid == pid) {
1877
1878 exec_status_fill(&s->main_exec_status, pid, code, status);
1879 s->main_pid = 0;
1880
1881 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
1882 assert(s->exec_command[SERVICE_EXEC_START]);
1883 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1884 }
1885
1886 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
1887
1888 /* The service exited, so the service is officially
1889 * gone. */
1890
1891 switch (s->state) {
1892
1893 case SERVICE_START_POST:
1894 case SERVICE_RELOAD:
1895 case SERVICE_STOP:
1896 /* Need to wait until the operation is
1897 * done */
1898 break;
1899
1900 case SERVICE_START:
1901 assert(s->type == SERVICE_FINISH);
1902
1903 /* This was our main goal, so let's go on */
1904 if (success)
1905 service_enter_start_post(s);
1906 else
1907 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1908 break;
1909
1910 case SERVICE_RUNNING:
1911 service_enter_running(s, success);
1912 break;
1913
1914 case SERVICE_STOP_SIGTERM:
1915 case SERVICE_STOP_SIGKILL:
1916
1917 if (!control_pid_good(s))
1918 service_enter_stop_post(s, success);
1919
1920 /* If there is still a control process, wait for that first */
1921 break;
1922
1923 default:
1924 assert_not_reached("Uh, main process died at wrong time.");
1925 }
1926
1927 } else if (s->control_pid == pid) {
1928
1929 if (s->control_command)
1930 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1931
1932 s->control_pid = 0;
1933
1934 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
1935
1936 /* If we are shutting things down anyway we
1937 * don't care about failing commands. */
1938
1939 if (s->control_command && s->control_command->command_next && success) {
1940
1941 /* There is another command to *
1942 * execute, so let's do that. */
1943
1944 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
1945 service_run_next(s, success);
1946
1947 } else {
1948 /* No further commands for this step, so let's
1949 * figure out what to do next */
1950
1951 s->control_command = NULL;
1952 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1953
1954 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
1955
1956 switch (s->state) {
1957
1958 case SERVICE_START_PRE:
1959 if (success)
1960 service_enter_start(s);
1961 else
1962 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1963 break;
1964
1965 case SERVICE_START:
1966 assert(s->type == SERVICE_FORKING);
1967
1968 /* Let's try to load the pid
1969 * file here if we can. We
1970 * ignore the return value,
1971 * since the PID file might
1972 * actually be created by a
1973 * START_POST script */
1974
1975 if (success) {
1976 if (s->pid_file)
1977 service_load_pid_file(s);
1978
1979 service_enter_start_post(s);
1980 } else
1981 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1982
1983 break;
1984
1985 case SERVICE_START_POST:
1986 if (success && s->pid_file && !s->main_pid_known) {
1987 int r;
1988
1989 /* Hmm, let's see if we can
1990 * load the pid now after the
1991 * start-post scripts got
1992 * executed. */
1993
1994 if ((r = service_load_pid_file(s)) < 0)
1995 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
1996 }
1997
1998 /* Fall through */
1999
2000 case SERVICE_RELOAD:
2001 if (success)
2002 service_enter_running(s, true);
2003 else
2004 service_enter_stop(s, false);
2005
2006 break;
2007
2008 case SERVICE_STOP:
2009 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2010 break;
2011
2012 case SERVICE_STOP_SIGTERM:
2013 case SERVICE_STOP_SIGKILL:
2014 if (main_pid_good(s) <= 0)
2015 service_enter_stop_post(s, success);
2016
2017 /* If there is still a service
2018 * process around, wait until
2019 * that one quit, too */
2020 break;
2021
2022 case SERVICE_STOP_POST:
2023 case SERVICE_FINAL_SIGTERM:
2024 case SERVICE_FINAL_SIGKILL:
2025 service_enter_dead(s, success, true);
2026 break;
2027
2028 default:
2029 assert_not_reached("Uh, control process died at wrong time.");
2030 }
2031 }
2032 } else
2033 assert_not_reached("Got SIGCHLD for unkown PID");
2034 }
2035
2036 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2037 Service *s = SERVICE(u);
2038
2039 assert(s);
2040 assert(elapsed == 1);
2041
2042 assert(w == &s->timer_watch);
2043
2044 switch (s->state) {
2045
2046 case SERVICE_START_PRE:
2047 case SERVICE_START:
2048 log_warning("%s operation timed out. Terminating.", u->meta.id);
2049 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2050 break;
2051
2052 case SERVICE_START_POST:
2053 case SERVICE_RELOAD:
2054 log_warning("%s operation timed out. Stopping.", u->meta.id);
2055 service_enter_stop(s, false);
2056 break;
2057
2058 case SERVICE_STOP:
2059 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2060 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2061 break;
2062
2063 case SERVICE_STOP_SIGTERM:
2064 log_warning("%s stopping timed out. Killing.", u->meta.id);
2065 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2066 break;
2067
2068 case SERVICE_STOP_SIGKILL:
2069 /* Uh, wie sent a SIGKILL and it is still not gone?
2070 * Must be something we cannot kill, so let's just be
2071 * weirded out and continue */
2072
2073 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2074 service_enter_stop_post(s, false);
2075 break;
2076
2077 case SERVICE_STOP_POST:
2078 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2079 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2080 break;
2081
2082 case SERVICE_FINAL_SIGTERM:
2083 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2084 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2085 break;
2086
2087 case SERVICE_FINAL_SIGKILL:
2088 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id);
2089 service_enter_dead(s, false, true);
2090 break;
2091
2092 case SERVICE_AUTO_RESTART:
2093 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
2094 service_enter_restart(s);
2095 break;
2096
2097 default:
2098 assert_not_reached("Timeout at wrong time.");
2099 }
2100 }
2101
2102 static void service_cgroup_notify_event(Unit *u) {
2103 Service *s = SERVICE(u);
2104
2105 assert(u);
2106
2107 log_debug("%s: cgroup is empty", u->meta.id);
2108
2109 switch (s->state) {
2110
2111 /* Waiting for SIGCHLD is usually more interesting,
2112 * because it includes return codes/signals. Which is
2113 * why we ignore the cgroup events for most cases,
2114 * except when we don't know pid which to expect the
2115 * SIGCHLD for. */
2116
2117 case SERVICE_RUNNING:
2118 service_enter_running(s, true);
2119 break;
2120
2121 default:
2122 ;
2123 }
2124 }
2125
2126 static int service_enumerate(Manager *m) {
2127 char **p;
2128 unsigned i;
2129 DIR *d = NULL;
2130 char *path = NULL, *fpath = NULL, *name = NULL;
2131 int r;
2132
2133 assert(m);
2134
2135 STRV_FOREACH(p, m->sysvrcnd_path)
2136 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2137 struct dirent *de;
2138
2139 free(path);
2140 path = NULL;
2141 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2142 r = -ENOMEM;
2143 goto finish;
2144 }
2145
2146 if (d)
2147 closedir(d);
2148
2149 if (!(d = opendir(path))) {
2150 if (errno != ENOENT)
2151 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2152
2153 continue;
2154 }
2155
2156 while ((de = readdir(d))) {
2157 Unit *service;
2158 int a, b;
2159
2160 if (ignore_file(de->d_name))
2161 continue;
2162
2163 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2164 continue;
2165
2166 if (strlen(de->d_name) < 4)
2167 continue;
2168
2169 a = undecchar(de->d_name[1]);
2170 b = undecchar(de->d_name[2]);
2171
2172 if (a < 0 || b < 0)
2173 continue;
2174
2175 free(fpath);
2176 fpath = NULL;
2177 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2178 r = -ENOMEM;
2179 goto finish;
2180 }
2181
2182 if (access(fpath, X_OK) < 0) {
2183
2184 if (errno != ENOENT)
2185 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2186
2187 continue;
2188 }
2189
2190 free(name);
2191 name = NULL;
2192 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
2193 r = -ENOMEM;
2194 goto finish;
2195 }
2196
2197 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0)
2198 goto finish;
2199
2200 if (de->d_name[0] == 'S' &&
2201 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_BASIC))
2202 SERVICE(service)->sysv_start_priority = a*10 + b;
2203
2204 manager_dispatch_load_queue(m);
2205 service = unit_follow_merge(service);
2206
2207 if (de->d_name[0] == 'S') {
2208 Unit *runlevel_target;
2209
2210 if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
2211 goto finish;
2212
2213 if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2214 goto finish;
2215
2216 if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2217 goto finish;
2218
2219 } else if (de->d_name[0] == 'K' && rcnd_table[i].type == RUNLEVEL_DOWN) {
2220 Unit *shutdown_target;
2221
2222 /* We honour K links only for
2223 * halt/reboot. For the normal
2224 * runlevels we assume the
2225 * stop jobs will be
2226 * implicitly added by the
2227 * core logic. Also, we don't
2228 * really distuingish here
2229 * between the runlevels 0 and
2230 * 6 and just add them to the
2231 * special shutdown target. */
2232
2233 if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2234 goto finish;
2235
2236 if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2237 goto finish;
2238
2239 if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2240 goto finish;
2241 }
2242 }
2243 }
2244
2245 r = 0;
2246
2247 finish:
2248 free(path);
2249 free(fpath);
2250 free(name);
2251 closedir(d);
2252
2253 return r;
2254 }
2255
2256 static void service_bus_name_owner_change(
2257 Unit *u,
2258 const char *name,
2259 const char *old_owner,
2260 const char *new_owner) {
2261
2262 Service *s = SERVICE(u);
2263
2264 assert(s);
2265 assert(name);
2266
2267 assert(streq(s->bus_name, name));
2268 assert(old_owner || new_owner);
2269
2270 if (old_owner && new_owner)
2271 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2272 else if (old_owner)
2273 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2274 else
2275 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2276
2277 s->bus_name_good = !!new_owner;
2278
2279 if (s->type == SERVICE_DBUS) {
2280
2281 /* service_enter_running() will figure out what to
2282 * do */
2283 if (s->state == SERVICE_RUNNING)
2284 service_enter_running(s, true);
2285 else if (s->state == SERVICE_START && new_owner)
2286 service_enter_start_post(s);
2287
2288 } else if (new_owner &&
2289 s->main_pid <= 0 &&
2290 (s->state == SERVICE_START ||
2291 s->state == SERVICE_START_POST ||
2292 s->state == SERVICE_RUNNING ||
2293 s->state == SERVICE_RELOAD)) {
2294
2295 /* Try to acquire PID from bus service */
2296 log_debug("Trying to acquire PID from D-Bus name...");
2297
2298 bus_query_pid(u->meta.manager, name);
2299 }
2300 }
2301
2302 static void service_bus_query_pid_done(
2303 Unit *u,
2304 const char *name,
2305 pid_t pid) {
2306
2307 Service *s = SERVICE(u);
2308
2309 assert(s);
2310 assert(name);
2311
2312 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2313
2314 if (s->main_pid <= 0 &&
2315 (s->state == SERVICE_START ||
2316 s->state == SERVICE_START_POST ||
2317 s->state == SERVICE_RUNNING ||
2318 s->state == SERVICE_RELOAD))
2319 s->main_pid = pid;
2320 }
2321
2322 int service_set_socket_fd(Service *s, int fd) {
2323 assert(s);
2324 assert(fd >= 0);
2325
2326 /* This is called by the socket code when instantiating a new
2327 * service for a stream socket and the socket needs to be
2328 * configured. */
2329
2330 if (UNIT(s)->meta.load_state != UNIT_LOADED)
2331 return -EINVAL;
2332
2333 if (s->socket_fd >= 0)
2334 return -EBUSY;
2335
2336 if (s->state != SERVICE_DEAD)
2337 return -EAGAIN;
2338
2339 s->socket_fd = fd;
2340 s->got_socket_fd = true;
2341 return 0;
2342 }
2343
2344 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2345 [SERVICE_DEAD] = "dead",
2346 [SERVICE_START_PRE] = "start-pre",
2347 [SERVICE_START] = "start",
2348 [SERVICE_START_POST] = "start-post",
2349 [SERVICE_RUNNING] = "running",
2350 [SERVICE_EXITED] = "exited",
2351 [SERVICE_RELOAD] = "reload",
2352 [SERVICE_STOP] = "stop",
2353 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2354 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2355 [SERVICE_STOP_POST] = "stop-post",
2356 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2357 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2358 [SERVICE_MAINTAINANCE] = "maintainance",
2359 [SERVICE_AUTO_RESTART] = "auto-restart",
2360 };
2361
2362 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2363
2364 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2365 [SERVICE_ONCE] = "once",
2366 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
2367 [SERVICE_RESTART_ALWAYS] = "restart-always",
2368 };
2369
2370 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2371
2372 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2373 [SERVICE_FORKING] = "forking",
2374 [SERVICE_SIMPLE] = "simple",
2375 [SERVICE_FINISH] = "finish",
2376 [SERVICE_DBUS] = "dbus"
2377 };
2378
2379 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2380
2381 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
2382 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2383 [SERVICE_EXEC_START] = "ExecStart",
2384 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2385 [SERVICE_EXEC_RELOAD] = "ExecReload",
2386 [SERVICE_EXEC_STOP] = "ExecStop",
2387 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2388 };
2389
2390 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2391
2392 const UnitVTable service_vtable = {
2393 .suffix = ".service",
2394
2395 .init = service_init,
2396 .done = service_done,
2397 .load = service_load,
2398
2399 .coldplug = service_coldplug,
2400
2401 .dump = service_dump,
2402
2403 .start = service_start,
2404 .stop = service_stop,
2405 .reload = service_reload,
2406
2407 .can_reload = service_can_reload,
2408
2409 .serialize = service_serialize,
2410 .deserialize_item = service_deserialize_item,
2411
2412 .active_state = service_active_state,
2413 .sub_state_to_string = service_sub_state_to_string,
2414
2415 .check_gc = service_check_gc,
2416 .check_snapshot = service_check_snapshot,
2417
2418 .sigchld_event = service_sigchld_event,
2419 .timer_event = service_timer_event,
2420
2421 .cgroup_notify_empty = service_cgroup_notify_event,
2422
2423 .bus_name_owner_change = service_bus_name_owner_change,
2424 .bus_query_pid_done = service_bus_query_pid_done,
2425
2426 .bus_message_handler = bus_service_message_handler,
2427
2428 .enumerate = service_enumerate
2429 };
Michael's branch of systemd.