]> git.ipfire.org Git - thirdparty/systemd.git/blame - service.c
projects / thirdparty / systemd.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
util: add decchar()/undecchar() calls
[thirdparty/systemd.git] / service.c
CommitLineData
5cb5a6ff
LP		 1/*-*- Mode: C; c-basic-offset: 8 -*-*/
2
a7334b09
LP		 3/***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20***/
21
5cb5a6ff 22#include <errno.h>
034c6ed7 23#include <signal.h>
2c4104f0
LP		 24#include <dirent.h>
25#include <unistd.h>
5cb5a6ff 26
87f0e418 27#include "unit.h"
5cb5a6ff
LP		 28#include "service.h"
29#include "load-fragment.h"
30#include "load-dropin.h"
034c6ed7 31#include "log.h"
2c4104f0
LP		 32#include "strv.h"
33
34#define COMMENTS "#;\n"
35#define NEWLINES "\n\r"
36#define LINE_MAX 4096
034c6ed7 37
acbb0225 38static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
87f0e418
LP		 39 [SERVICE_DEAD] = UNIT_INACTIVE,
40 [SERVICE_START_PRE] = UNIT_ACTIVATING,
41 [SERVICE_START] = UNIT_ACTIVATING,
42 [SERVICE_START_POST] = UNIT_ACTIVATING,
43 [SERVICE_RUNNING] = UNIT_ACTIVE,
44 [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
45 [SERVICE_STOP] = UNIT_DEACTIVATING,
46 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
47 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
48 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
49 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
50 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
51 [SERVICE_MAINTAINANCE] = UNIT_INACTIVE,
52 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
034c6ed7 53};
5cb5a6ff 54
87f0e418
LP		 55static void service_done(Unit *u) {
56 Service *s = SERVICE(u);
44d8db9e
LP		 57
58 assert(s);
59
60 free(s->pid_file);
61 s->pid_file = NULL;
62
2c4104f0
LP		 63 free(s->sysv_path);
64 s->sysv_path = NULL;
65
44d8db9e
LP		 66 exec_context_done(&s->exec_context);
67 exec_command_free_array(s->exec_command, _SERVICE_EXEC_MAX);
68 s->control_command = NULL;
69
70 /* This will leak a process, but at least no memory or any of
71 * our resources */
72 if (s->main_pid > 0) {
87f0e418 73 unit_unwatch_pid(u, s->main_pid);
44d8db9e
LP		 74 s->main_pid = 0;
75 }
76
77 if (s->control_pid > 0) {
87f0e418 78 unit_unwatch_pid(u, s->control_pid);
44d8db9e
LP		 79 s->control_pid = 0;
80 }
81
acbb0225 82 unit_unwatch_timer(u, &s->timer_watch);
44d8db9e
LP		 83}
84
2c4104f0
LP		 85static int sysv_translate_name(const char *name, char **_r) {
86
87 static const char * const table[] = {
88 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
89 "$network", SPECIAL_NETWORK_TARGET,
90 "$named", SPECIAL_NSS_LOOKUP_TARGET,
91 "$portmap", SPECIAL_RPCBIND_TARGET,
92 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
93 "$syslog", SPECIAL_SYSLOG_TARGET,
94 "$time", SPECIAL_RTC_SET_TARGET
95 };
96
97 unsigned i;
98 char *r;
99
100 for (i = 0; i < ELEMENTSOF(table); i += 2)
101 if (streq(table[i], name)) {
102 if (!(r = strdup(table[i+1])))
103 return -ENOMEM;
104
105 goto finish;
106 }
107
108 if (*name == '$')
109 return 0;
110
111 if (asprintf(&r, "%s.service", name) < 0)
112 return -ENOMEM;
113
114finish:
115
116 if (_r)
117 *_r = r;
118
119 return 1;
120}
121
122static int sysv_chkconfig_order(Service *s) {
123 Meta *other;
124 int r;
125
126 assert(s);
127
128 if (s->sysv_start_priority < 0)
129 return 0;
130
131 /* If no LSB header is found we try to order init scripts via
132 * the start priority of the chkconfig header. */
133
134 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
135 Service *t;
136 UnitDependency d;
137
138 t = (Service*) other;
139
140 if (s == t)
141 continue;
142
143 if (t->sysv_start_priority < 0)
144 continue;
145
146 if (t->sysv_start_priority < s->sysv_start_priority)
147 d = UNIT_AFTER;
148 else if (t->sysv_start_priority > s->sysv_start_priority)
149 d = UNIT_BEFORE;
150 else
151 continue;
152
153 /* FIXME: Maybe we should compare the name here lexicographically? */
154
155 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t))) < 0)
156 return r;
157 }
158
159 return 0;
160}
161
162static ExecCommand *exec_command_new(const char *path, const char *arg1) {
163 ExecCommand *c;
164
165 if (!(c = new0(ExecCommand, 1)))
166 return NULL;
167
168 if (!(c->path = strdup(path))) {
169 free(c);
170 return NULL;
171 }
172
173 if (!(c->argv = strv_new(path, arg1, NULL))) {
174 free(c->path);
175 free(c);
176 return NULL;
177 }
178
179 return c;
180}
181
182static int sysv_exec_commands(Service *s) {
183 ExecCommand *c;
184
185 assert(s);
186 assert(s->sysv_path);
187
188 if (!(c = exec_command_new(s->sysv_path, "start")))
189 return -ENOMEM;
190 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
191
192 if (!(c = exec_command_new(s->sysv_path, "stop")))
193 return -ENOMEM;
194 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
195
196 if (!(c = exec_command_new(s->sysv_path, "reload")))
197 return -ENOMEM;
198 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
199
200 return 0;
201}
202
203static int service_load_sysv_path(Service *s, const char *path) {
204 FILE *f;
205 Unit *u;
206 unsigned line = 0;
207 int r;
208 enum {
209 NORMAL,
210 DESCRIPTION,
211 LSB,
212 LSB_DESCRIPTION
213 } state = NORMAL;
214 bool has_lsb = false;
215
216 u = UNIT(s);
217
218 if (!(f = fopen(path, "re"))) {
219 r = errno == ENOENT ? 0 : -errno;
220 goto finish;
221 }
222
223 s->type = SERVICE_FORKING;
224 s->restart = SERVICE_ONCE;
225
226 free(s->sysv_path);
227 if (!(s->sysv_path = strdup(path))) {
228 r = -ENOMEM;
229 goto finish;
230 }
231
232 while (!feof(f)) {
233 char l[LINE_MAX], *t;
234
235 if (!fgets(l, sizeof(l), f)) {
236 if (feof(f))
237 break;
238
239 r = -errno;
240 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
241 goto finish;
242 }
243
244 line++;
245
246 t = strstrip(l);
247 if (*t != '#')
248 continue;
249
250 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
251 state = LSB;
252 has_lsb = true;
253 continue;
254 }
255
256 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
257 state = NORMAL;
258 continue;
259 }
260
261 t++;
262 t += strspn(t, WHITESPACE);
263
264 if (state == NORMAL) {
265
266 /* Try to parse Red Hat style chkconfig headers */
267
268 if (startswith(t, "chkconfig:")) {
269 int start_priority;
270
271 state = NORMAL;
272
273 if (sscanf(t+10, "%*15s %i %*i",
274 &start_priority) != 1) {
275
276 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
277 continue;
278 }
279
280 if (start_priority < 0 || start_priority > 99) {
281 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
282 continue;
283 }
284
285 s->sysv_start_priority = start_priority;
286
287 } else if (startswith(t, "description:")) {
288
289 size_t k = strlen(t);
290 char *d;
291
292 if (t[k-1] == '\\') {
293 state = DESCRIPTION;
294 t[k-1] = 0;
295 }
296
297 if (!(d = strdup(strstrip(t+12)))) {
298 r = -ENOMEM;
299 goto finish;
300 }
301
302 free(u->meta.description);
303 u->meta.description = d;
304
305 } else if (startswith(t, "pidfile:")) {
306
307 char *fn;
308
309 state = NORMAL;
310
311 fn = strstrip(t+8);
312 if (!path_is_absolute(fn)) {
313 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
314 continue;
315 }
316
317 if (!(fn = strdup(fn))) {
318 r = -ENOMEM;
319 goto finish;
320 }
321
322 free(s->pid_file);
323 s->pid_file = fn;
324 }
325
326 } else if (state == DESCRIPTION) {
327
328 /* Try to parse Red Hat style description
329 * continuation */
330
331 size_t k = strlen(t);
332 char *d;
333
334 if (t[k-1] == '\\')
335 t[k-1] = 0;
336 else
337 state = NORMAL;
338
339 assert(u->meta.description);
340 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
341 r = -ENOMEM;
342 goto finish;
343 }
344
345 free(u->meta.description);
346 u->meta.description = d;
347
348 } else if (state == LSB || state == LSB_DESCRIPTION) {
349
350 if (startswith(t, "Provides:")) {
351 char *i, *w;
352 size_t z;
353
354 state = LSB;
355
356 FOREACH_WORD(w, z, t+9, i) {
357 char *n, *m;
358
359 if (!(n = strndup(w, z))) {
360 r = -ENOMEM;
361 goto finish;
362 }
363
364 r = sysv_translate_name(n, &m);
365 free(n);
366
367 if (r < 0)
368 goto finish;
369
370 if (r == 0)
371 continue;
372
bd77d0fc
LP		 373 if (unit_name_to_type(m) == UNIT_SERVICE)
374 r = unit_add_name(u, m);
375 else {
376 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m)) >= 0)
377 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m);
378 }
379
2c4104f0
LP		 380 free(m);
381
382 if (r < 0)
383 goto finish;
384 }
385
386 } else if (startswith(t, "Required-Start:") ||
387 startswith(t, "Should-Start:")) {
388 char *i, *w;
389 size_t z;
390
391 state = LSB;
392
393 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
394 char *n, *m;
395
396 if (!(n = strndup(w, z))) {
397 r = -ENOMEM;
398 goto finish;
399 }
400
401 r = sysv_translate_name(n, &m);
402 free(n);
403
404 if (r < 0)
405 goto finish;
406
407 if (r == 0)
408 continue;
409
410 if (!(r = unit_add_dependency_by_name(u, UNIT_AFTER, m)) < 0) {
411 free(m);
412 goto finish;
413 }
414
415 r = unit_add_dependency_by_name(
416 u,
417 startswith(t, "Required-Start:") ? UNIT_REQUIRES : UNIT_WANTS,
418 m);
419 free(m);
420
421 if (r < 0)
422 goto finish;
423 }
424
425 } else if (startswith(t, "Description:")) {
426 char *d;
427
428 state = LSB_DESCRIPTION;
429
430 if (!(d = strdup(strstrip(t+12)))) {
431 r = -ENOMEM;
432 goto finish;
433 }
434
435 free(u->meta.description);
436 u->meta.description = d;
437
438 } else if (startswith(t, "Short-Description:") && !u->meta.description) {
439 char *d;
440
441 /* We use the short description only
442 * if no long description is set. */
443
444 state = LSB;
445
446 if (!(d = strdup(strstrip(t+18)))) {
447 r = -ENOMEM;
448 goto finish;
449 }
450
451 free(u->meta.description);
452 u->meta.description = d;
453
454 } else if (state == LSB_DESCRIPTION) {
455
456 if (startswith(l, "#\t") || startswith(l, "# ")) {
457 char *d;
458
459 assert(u->meta.description);
460 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
461 r = -ENOMEM;
462 goto finish;
463 }
464
465 free(u->meta.description);
466 u->meta.description = d;
467 } else
468 state = LSB;
469 }
470 }
471 }
472
473 /* If the init script has no LSB header, then let's
474 * enforce the ordering via the chkconfig
475 * priorities */
476
477 if (!has_lsb)
478 if ((r = sysv_chkconfig_order(s)) < 0)
479 goto finish;
480
481 if ((r = sysv_exec_commands(s)) < 0)
482 goto finish;
483
0fd030be
LP		 484 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_SYSINIT_SERVICE)) < 0 ||
485 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_SYSINIT_SERVICE)) < 0)
486 goto finish;
487
2c4104f0
LP		 488 r = 1;
489
490finish:
491
492 if (f)
493 fclose(f);
494
495 return r;
496}
497
498static int service_load_sysv_name(Service *s, const char *name) {
499 char **p;
500
501 assert(s);
502 assert(name);
503
504 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
505 char *path;
506 int r;
507
508 if (asprintf(&path, "%s/%s", *p, name) < 0)
509 return -ENOMEM;
510
511 assert(endswith(path, ".service"));
512 path[strlen(path)-8] = 0;
513
514 r = service_load_sysv_path(s, path);
515 free(path);
516
24e61ac4 517 if (r != 0)
2c4104f0
LP		 518 return r;
519 }
520
521 return 0;
522}
523
5cb5a6ff 524static int service_load_sysv(Service *s) {
2c4104f0
LP		 525 const char *t;
526 Iterator i;
527 int r;
528
5cb5a6ff
LP		 529 assert(s);
530
531 /* Load service data from SysV init scripts, preferably with
532 * LSB headers ... */
533
2c4104f0
LP		 534 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
535 return 0;
536
537 if ((t = unit_id(UNIT(s))))
538 if ((r = service_load_sysv_name(s, t)) != 0)
539 return r;
540
541 SET_FOREACH(t, UNIT(s)->meta.names, i)
542 if ((r == service_load_sysv_name(s, t)) != 0)
543 return r;
544
545 return 0;
5cb5a6ff
LP		 546}
547
87f0e418 548static int service_init(Unit *u) {
5cb5a6ff 549 int r;
87f0e418 550 Service *s = SERVICE(u);
5cb5a6ff
LP		 551
552 assert(s);
553
034c6ed7
LP		 554 /* First, reset everything to the defaults, in case this is a
555 * reload */
556
557 s->type = 0;
558 s->restart = 0;
559
560 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
561 s->restart_usec = DEFAULT_RESTART_USEC;
562
563 exec_context_init(&s->exec_context);
564
acbb0225 565 s->timer_watch.type = WATCH_INVALID;
034c6ed7
LP		 566
567 s->state = SERVICE_DEAD;
5cb5a6ff 568
2c4104f0 569 s->sysv_start_priority = -1;
81a2b7ce
LP		 570 s->permissions_start_only = false;
571 s->root_directory_start_only = false;
2c4104f0 572
1e2e8133
LP		 573 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
574
5cb5a6ff 575 /* Load a .service file */
d46de8a1 576 if ((r = unit_load_fragment(u)) < 0) {
87f0e418 577 service_done(u);
5cb5a6ff 578 return r;
44d8db9e 579 }
5cb5a6ff 580
bd77d0fc 581 /* Load a classic init script as a fallback, if we couldn't find anything */
d46de8a1
LP		 582 if (r == 0)
583 if ((r = service_load_sysv(s)) <= 0) {
584 service_done(u);
585 return r < 0 ? r : -ENOENT;
586 }
587
5cb5a6ff 588 /* Load dropin directory data */
87f0e418
LP		 589 if ((r = unit_load_dropin(u)) < 0) {
590 service_done(u);
5cb5a6ff 591 return r;
034c6ed7
LP		 592 }
593
8e274523
LP		 594 /* Add default cgroup */
595 if ((r = unit_add_default_cgroup(u)) < 0) {
596 service_done(u);
597 return r;
598 }
599
44d8db9e 600 return 0;
034c6ed7
LP		 601}
602
87f0e418 603static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 604
5cb5a6ff 605 ServiceExecCommand c;
87f0e418 606 Service *s = SERVICE(u);
47be870b
LP		 607 const char *prefix2;
608 char *p2;
5cb5a6ff
LP		 609
610 assert(s);
611
47be870b
LP		 612 p2 = strappend(prefix, "\t");
613 prefix2 = p2 ? p2 : prefix;
44d8db9e 614
5cb5a6ff 615 fprintf(f,
81a2b7ce
LP		 616 "%sService State: %s\n"
617 "%sPermissionsStartOnly: %s\n"
8e274523 618 "%sRootDirectoryStartOnly: %s\n"
03d6ab85
LP		 619 "%sValidNoProcess: %s\n"
620 "%sType: %s\n",
81a2b7ce
LP		 621 prefix, service_state_to_string(s->state),
622 prefix, yes_no(s->permissions_start_only),
8e274523 623 prefix, yes_no(s->root_directory_start_only),
03d6ab85
LP		 624 prefix, yes_no(s->valid_no_process),
625 prefix, service_type_to_string(s->type));
5cb5a6ff 626
034c6ed7
LP		 627 if (s->pid_file)
628 fprintf(f,
629 "%sPIDFile: %s\n",
630 prefix, s->pid_file);
631
632
5cb5a6ff
LP		 633 exec_context_dump(&s->exec_context, f, prefix);
634
635 for (c = 0; c < _SERVICE_EXEC_MAX; c++) {
5cb5a6ff 636
44d8db9e
LP		 637 if (!s->exec_command[c])
638 continue;
639
640 fprintf(f, "%s→ %s:\n",
94f04347 641 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 642
643 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 644 }
44d8db9e 645
2c4104f0
LP		 646 if (s->sysv_path)
647 fprintf(f,
648 "%sSysV Init Script Path: %s\n",
649 prefix, s->sysv_path);
650
651 if (s->sysv_start_priority >= 0)
652 fprintf(f,
653 "%sSysV Start Priority: %i\n",
654 prefix, s->sysv_start_priority);
655
47be870b 656 free(p2);
5cb5a6ff
LP		 657}
658
034c6ed7
LP		 659static int service_load_pid_file(Service *s) {
660 char *k;
661 unsigned long p;
662 int r;
663
664 assert(s);
665
666 if (s->main_pid_known)
667 return 0;
668
669 if (!s->pid_file)
670 return -ENOENT;
671
672 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
673 return r;
674
675 if ((r = safe_atolu(k, &p)) < 0) {
676 free(k);
677 return r;
678 }
679
680 if ((unsigned long) (pid_t) p != p)
681 return -ERANGE;
682
683 s->main_pid = p;
684 s->main_pid_known = true;
685
686 return 0;
687}
688
3e33402a
LP		 689static int service_get_sockets(Service *s, Set **_set) {
690 Set *set;
ceee3d82
LP		 691 Iterator i;
692 char *t;
3e33402a 693 int r;
ceee3d82
LP		 694
695 assert(s);
3e33402a
LP		 696 assert(_set);
697
698 /* Collects all Socket objects that belong to this
699 * service. Note that a service might have multiple sockets
700 * via multiple names. */
701
702 if (!(set = set_new(NULL, NULL)))
703 return -ENOMEM;
ceee3d82
LP		 704
705 SET_FOREACH(t, UNIT(s)->meta.names, i) {
706 char *k;
707 Unit *p;
708
709 /* Look for all socket objects that go by any of our
710 * units and collect their fds */
711
3e33402a
LP		 712 if (!(k = unit_name_change_suffix(t, ".socket"))) {
713 r = -ENOMEM;
714 goto fail;
715 }
ceee3d82
LP		 716
717 p = manager_get_unit(UNIT(s)->meta.manager, k);
718 free(k);
719
3e33402a 720 if (!p) continue;
ceee3d82 721
3e33402a
LP		 722 if ((r = set_put(set, p)) < 0)
723 goto fail;
ceee3d82
LP		 724 }
725
3e33402a
LP		 726 *_set = set;
727 return 0;
728
729fail:
730 set_free(set);
731 return r;
732}
733
734
735static int service_notify_sockets(Service *s) {
736 Iterator i;
737 Set *set;
47be870b 738 Socket *sock;
3e33402a
LP		 739 int r;
740
741 assert(s);
742
743 /* Notifies all our sockets when we die */
744
745 if ((r = service_get_sockets(s, &set)) < 0)
746 return r;
747
47be870b
LP		 748 SET_FOREACH(sock, set, i)
749 socket_notify_service_dead(sock);
3e33402a
LP		 750
751 set_free(set);
752
ceee3d82
LP		 753 return 0;
754}
755
034c6ed7
LP		 756static void service_set_state(Service *s, ServiceState state) {
757 ServiceState old_state;
5cb5a6ff
LP		 758 assert(s);
759
034c6ed7 760 old_state = s->state;
5cb5a6ff 761 s->state = state;
034c6ed7
LP		 762
763 if (state != SERVICE_START_PRE &&
764 state != SERVICE_START &&
765 state != SERVICE_START_POST &&
766 state != SERVICE_RELOAD &&
767 state != SERVICE_STOP &&
768 state != SERVICE_STOP_SIGTERM &&
769 state != SERVICE_STOP_SIGKILL &&
770 state != SERVICE_STOP_POST &&
771 state != SERVICE_FINAL_SIGTERM &&
772 state != SERVICE_FINAL_SIGKILL &&
773 state != SERVICE_AUTO_RESTART)
acbb0225 774 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 775
7d55e835
LP		 776 if (state != SERVICE_START &&
777 state != SERVICE_START_POST &&
034c6ed7
LP		 778 state != SERVICE_RUNNING &&
779 state != SERVICE_RELOAD &&
780 state != SERVICE_STOP &&
781 state != SERVICE_STOP_SIGTERM &&
782 state != SERVICE_STOP_SIGKILL)
acbb0225 783 if (s->main_pid > 0) {
87f0e418 784 unit_unwatch_pid(UNIT(s), s->main_pid);
034c6ed7
LP		 785 s->main_pid = 0;
786 }
787
788 if (state != SERVICE_START_PRE &&
789 state != SERVICE_START &&
790 state != SERVICE_START_POST &&
791 state != SERVICE_RELOAD &&
792 state != SERVICE_STOP &&
793 state != SERVICE_STOP_SIGTERM &&
794 state != SERVICE_STOP_SIGKILL &&
795 state != SERVICE_STOP_POST &&
796 state != SERVICE_FINAL_SIGTERM &&
797 state != SERVICE_FINAL_SIGKILL)
acbb0225 798 if (s->control_pid > 0) {
87f0e418 799 unit_unwatch_pid(UNIT(s), s->control_pid);
034c6ed7
LP		 800 s->control_pid = 0;
801 }
802
803 if (state != SERVICE_START_PRE &&
804 state != SERVICE_START &&
805 state != SERVICE_START_POST &&
806 state != SERVICE_RELOAD &&
807 state != SERVICE_STOP &&
808 state != SERVICE_STOP_POST)
809 s->control_command = NULL;
810
ceee3d82
LP		 811 if (state == SERVICE_DEAD ||
812 state == SERVICE_STOP ||
813 state == SERVICE_STOP_SIGTERM ||
814 state == SERVICE_STOP_SIGKILL ||
815 state == SERVICE_STOP_POST ||
816 state == SERVICE_FINAL_SIGTERM ||
817 state == SERVICE_FINAL_SIGKILL ||
818 state == SERVICE_MAINTAINANCE ||
819 state == SERVICE_AUTO_RESTART)
820 service_notify_sockets(s);
821
94f04347 822 log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 823
824 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 825}
826
44d8db9e
LP		 827static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
828 Iterator i;
829 int r;
830 int *rfds = NULL;
831 unsigned rn_fds = 0;
3e33402a 832 Set *set;
47be870b 833 Socket *sock;
44d8db9e
LP		 834
835 assert(s);
836 assert(fds);
837 assert(n_fds);
838
3e33402a
LP		 839 if ((r = service_get_sockets(s, &set)) < 0)
840 return r;
841
47be870b 842 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 843 int *cfds;
844 unsigned cn_fds;
845
47be870b 846 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 847 goto fail;
848
849 if (!cfds)
850 continue;
851
852 if (!rfds) {
853 rfds = cfds;
854 rn_fds = cn_fds;
855 } else {
856 int *t;
857
858 if (!(t = new(int, rn_fds+cn_fds))) {
859 free(cfds);
860 r = -ENOMEM;
861 goto fail;
862 }
863
864 memcpy(t, rfds, rn_fds);
865 memcpy(t+rn_fds, cfds, cn_fds);
866 free(rfds);
867 free(cfds);
868
869 rfds = t;
870 rn_fds = rn_fds+cn_fds;
871 }
872 }
873
874 *fds = rfds;
875 *n_fds = rn_fds;
3e33402a
LP		 876
877 set_free(set);
878
44d8db9e
LP		 879 return 0;
880
881fail:
3e33402a 882 set_free(set);
44d8db9e 883 free(rfds);
3e33402a 884
44d8db9e
LP		 885 return r;
886}
887
81a2b7ce
LP		 888static int service_spawn(
889 Service *s,
890 ExecCommand *c,
891 bool timeout,
892 bool pass_fds,
893 bool apply_permissions,
894 bool apply_chroot,
895 pid_t *_pid) {
896
034c6ed7
LP		 897 pid_t pid;
898 int r;
44d8db9e
LP		 899 int *fds = NULL;
900 unsigned n_fds = 0;
034c6ed7
LP		 901
902 assert(s);
903 assert(c);
904 assert(_pid);
905
44d8db9e
LP		 906 if (pass_fds)
907 if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
908 goto fail;
909
034c6ed7 910 if (timeout) {
acbb0225 911 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 912 goto fail;
913 } else
acbb0225 914 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 915
81a2b7ce
LP		 916 if ((r = exec_spawn(c,
917 &s->exec_context,
918 fds, n_fds,
919 apply_permissions,
920 apply_chroot,
8e274523 921 UNIT(s)->meta.cgroup_bondings,
81a2b7ce 922 &pid)) < 0)
034c6ed7
LP		 923 goto fail;
924
87f0e418 925 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 926 /* FIXME: we need to do something here */
927 goto fail;
928
44d8db9e 929 free(fds);
034c6ed7
LP		 930 *_pid = pid;
931
5cb5a6ff 932 return 0;
034c6ed7
LP		 933
934fail:
44d8db9e
LP		 935 free(fds);
936
034c6ed7 937 if (timeout)
acbb0225 938 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 939
940 return r;
941}
942
943static void service_enter_dead(Service *s, bool success, bool allow_restart) {
944 int r;
945 assert(s);
946
947 if (!success)
948 s->failure = true;
949
950 if (allow_restart &&
951 (s->restart == SERVICE_RESTART_ALWAYS ||
952 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
953
acbb0225 954 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 955 goto fail;
956
957 service_set_state(s, SERVICE_AUTO_RESTART);
958 } else
959 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
960
961 return;
962
963fail:
87f0e418 964 log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 965 service_enter_dead(s, false, false);
966}
967
968static void service_enter_signal(Service *s, ServiceState state, bool success);
969
970static void service_enter_stop_post(Service *s, bool success) {
971 int r;
972 assert(s);
973
974 if (!success)
975 s->failure = true;
976
d6ea93e3 977 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
81a2b7ce
LP		 978 if ((r = service_spawn(s,
979 s->control_command,
980 true,
981 false,
982 !s->permissions_start_only,
983 !s->root_directory_start_only,
984 &s->control_pid)) < 0)
034c6ed7
LP		 985 goto fail;
986
d6ea93e3
LP		 987
988 service_set_state(s, SERVICE_STOP_POST);
989
990 if (!s->control_command)
034c6ed7
LP		 991 service_enter_dead(s, true, true);
992
993 return;
994
995fail:
87f0e418 996 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 997 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
998}
999
1000static void service_enter_signal(Service *s, ServiceState state, bool success) {
1001 int r;
1002 bool sent = false;
1003
1004 assert(s);
1005
1006 if (!success)
1007 s->failure = true;
1008
1009 if (s->main_pid > 0 || s->control_pid > 0) {
1010 int sig;
1011
1012 sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1013
1014 r = 0;
1015 if (s->main_pid > 0) {
1016 if (kill(s->main_pid, sig) < 0 && errno != ESRCH)
1017 r = -errno;
1018 else
1019 sent = true;
1020 }
1021
1022 if (s->control_pid > 0) {
1023 if (kill(s->control_pid, sig) < 0 && errno != ESRCH)
1024 r = -errno;
1025 else
1026 sent = true;
1027 }
1028
1029 if (r < 0)
1030 goto fail;
d6ea93e3 1031 }
034c6ed7 1032
d6ea93e3
LP		 1033 service_set_state(s, state);
1034
1035 if (s->main_pid <= 0 && s->control_pid <= 0)
034c6ed7
LP		 1036 service_enter_dead(s, true, true);
1037
1038 return;
1039
1040fail:
87f0e418 1041 log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1042
1043 if (sent) {
1044 s->failure = true;
1045 service_set_state(s, state);
1046 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1047 service_enter_stop_post(s, false);
1048 else
1049 service_enter_dead(s, false, true);
1050}
1051
1052static void service_enter_stop(Service *s, bool success) {
1053 int r;
1054 assert(s);
1055
1056 if (!success)
1057 s->failure = true;
1058
d6ea93e3 1059 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
81a2b7ce
LP		 1060 if ((r = service_spawn(s,
1061 s->control_command,
1062 true,
1063 false,
1064 !s->permissions_start_only,
1065 !s->root_directory_start_only,
1066 &s->control_pid)) < 0)
034c6ed7
LP		 1067 goto fail;
1068
d6ea93e3
LP		 1069 service_set_state(s, SERVICE_STOP);
1070
1071 if (!s->control_command)
034c6ed7
LP		 1072 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1073
1074 return;
1075
1076fail:
87f0e418 1077 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1078 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1079}
1080
1081static void service_enter_start_post(Service *s) {
1082 int r;
1083 assert(s);
1084
d6ea93e3 1085 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST]))
81a2b7ce
LP		 1086 if ((r = service_spawn(s,
1087 s->control_command,
1088 true,
1089 false,
1090 !s->permissions_start_only,
1091 !s->root_directory_start_only,
1092 &s->control_pid)) < 0)
034c6ed7
LP		 1093 goto fail;
1094
d6ea93e3
LP		 1095
1096 service_set_state(s, SERVICE_START_POST);
1097
1098 if (!s->control_command)
034c6ed7
LP		 1099 service_set_state(s, SERVICE_RUNNING);
1100
1101 return;
1102
1103fail:
87f0e418 1104 log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1105 service_enter_stop(s, false);
1106}
1107
1108static void service_enter_start(Service *s) {
1109 pid_t pid;
1110 int r;
1111
1112 assert(s);
1113
1114 assert(s->exec_command[SERVICE_EXEC_START]);
1115 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1116
81a2b7ce
LP		 1117 if ((r = service_spawn(s,
1118 s->exec_command[SERVICE_EXEC_START],
1119 s->type == SERVICE_FORKING,
1120 true,
1121 true,
1122 true,
1123 &pid)) < 0)
034c6ed7
LP		 1124 goto fail;
1125
d6ea93e3
LP		 1126 service_set_state(s, SERVICE_START);
1127
034c6ed7
LP		 1128 if (s->type == SERVICE_SIMPLE) {
1129 /* For simple services we immediately start
1130 * the START_POST binaries. */
1131
1132 s->main_pid = pid;
1133 s->main_pid_known = true;
1134 service_enter_start_post(s);
1135
1136 } else if (s->type == SERVICE_FORKING) {
1137
1138 /* For forking services we wait until the start
1139 * process exited. */
1140
1141 s->control_pid = pid;
1142 s->control_command = s->exec_command[SERVICE_EXEC_START];
7d55e835
LP		 1143 } else if (s->type == SERVICE_FINISH) {
1144
1145 /* For finishing services we wait until the start
1146 * process exited, too, but it is our main process. */
1147
1148 s->main_pid = pid;
1149 s->control_command = s->exec_command[SERVICE_EXEC_START];
034c6ed7
LP		 1150 } else
1151 assert_not_reached("Unknown service type");
1152
1153 return;
1154
1155fail:
87f0e418 1156 log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1157 service_enter_stop(s, false);
1158}
1159
1160static void service_enter_start_pre(Service *s) {
1161 int r;
1162
1163 assert(s);
1164
d6ea93e3 1165 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
81a2b7ce
LP		 1166 if ((r = service_spawn(s,
1167 s->control_command,
1168 true,
1169 false,
1170 !s->permissions_start_only,
1171 !s->root_directory_start_only,
1172 &s->control_pid)) < 0)
034c6ed7
LP		 1173 goto fail;
1174
d6ea93e3
LP		 1175 service_set_state(s, SERVICE_START_PRE);
1176
1177 if (!s->control_command)
034c6ed7
LP		 1178 service_enter_start(s);
1179
1180 return;
1181
1182fail:
87f0e418 1183 log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1184 service_enter_dead(s, false, true);
1185}
1186
1187static void service_enter_restart(Service *s) {
1188 int r;
1189 assert(s);
1190
87f0e418 1191 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1192 goto fail;
1193
87f0e418 1194 log_debug("%s scheduled restart job.", unit_id(UNIT(s)));
034c6ed7
LP		 1195 service_enter_dead(s, true, false);
1196 return;
1197
1198fail:
1199
87f0e418 1200 log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1201 service_enter_dead(s, false, false);
1202}
1203
1204static void service_enter_reload(Service *s) {
1205 int r;
1206
1207 assert(s);
1208
d6ea93e3 1209 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
81a2b7ce
LP		 1210 if ((r = service_spawn(s,
1211 s->control_command,
1212 true,
1213 false,
1214 !s->permissions_start_only,
1215 !s->root_directory_start_only,
1216 &s->control_pid)) < 0)
034c6ed7
LP		 1217 goto fail;
1218
d6ea93e3
LP		 1219 service_set_state(s, SERVICE_RELOAD);
1220
1221 if (!s->control_command)
034c6ed7
LP		 1222 service_set_state(s, SERVICE_RUNNING);
1223
1224 return;
1225
1226fail:
87f0e418 1227 log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1228 service_enter_stop(s, false);
1229}
1230
1231static void service_run_next(Service *s, bool success) {
1232 int r;
1233
1234 assert(s);
1235 assert(s->control_command);
1236 assert(s->control_command->command_next);
1237
1238 if (!success)
1239 s->failure = true;
1240
1241 s->control_command = s->control_command->command_next;
1242
81a2b7ce
LP		 1243 if ((r = service_spawn(s,
1244 s->control_command,
1245 true,
1246 false,
1247 !s->permissions_start_only,
1248 !s->root_directory_start_only,
1249 &s->control_pid)) < 0)
034c6ed7
LP		 1250 goto fail;
1251
1252 return;
1253
1254fail:
87f0e418 1255 log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1256
1257 if (s->state == SERVICE_STOP)
1258 service_enter_stop_post(s, false);
1259 else if (s->state == SERVICE_STOP_POST)
1260 service_enter_dead(s, false, true);
1261 else
1262 service_enter_stop(s, false);
5cb5a6ff
LP		 1263}
1264
87f0e418
LP		 1265static int service_start(Unit *u) {
1266 Service *s = SERVICE(u);
5cb5a6ff
LP		 1267
1268 assert(s);
1269
034c6ed7
LP		 1270 /* We cannot fulfill this request right now, try again later
1271 * please! */
1272 if (s->state == SERVICE_STOP ||
1273 s->state == SERVICE_STOP_SIGTERM ||
1274 s->state == SERVICE_STOP_SIGKILL ||
1275 s->state == SERVICE_STOP_POST ||
1276 s->state == SERVICE_FINAL_SIGTERM ||
1277 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1278 return -EAGAIN;
1279
034c6ed7
LP		 1280 /* Already on it! */
1281 if (s->state == SERVICE_START_PRE ||
1282 s->state == SERVICE_START ||
1283 s->state == SERVICE_START_POST)
1284 return 0;
1285
1286 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1287
1e2e8133
LP		 1288 /* Make sure we don't enter a busy loop of some kind. */
1289 if (!ratelimit_test(&s->ratelimit)) {
1290 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
1291 return -EAGAIN;
1292 }
1293
034c6ed7
LP		 1294 s->failure = false;
1295 s->main_pid_known = false;
1296
1297 service_enter_start_pre(s);
1298 return 0;
5cb5a6ff
LP		 1299}
1300
87f0e418
LP		 1301static int service_stop(Unit *u) {
1302 Service *s = SERVICE(u);
5cb5a6ff
LP		 1303
1304 assert(s);
1305
034c6ed7
LP		 1306 if (s->state == SERVICE_START_PRE ||
1307 s->state == SERVICE_START ||
1308 s->state == SERVICE_START_POST ||
1309 s->state == SERVICE_RELOAD)
1310 return -EAGAIN;
1311
1312 if (s->state == SERVICE_AUTO_RESTART) {
1313 service_set_state(s, SERVICE_DEAD);
1314 return 0;
1315 }
1316
1317 assert(s->state == SERVICE_RUNNING);
5cb5a6ff 1318
034c6ed7 1319 service_enter_stop(s, true);
5cb5a6ff
LP		 1320 return 0;
1321}
1322
87f0e418
LP		 1323static int service_reload(Unit *u) {
1324 Service *s = SERVICE(u);
034c6ed7
LP		 1325
1326 assert(s);
1327
1328 assert(s->state == SERVICE_RUNNING);
1329
1330 service_enter_reload(s);
5cb5a6ff
LP		 1331 return 0;
1332}
1333
87f0e418
LP		 1334static bool service_can_reload(Unit *u) {
1335 Service *s = SERVICE(u);
034c6ed7
LP		 1336
1337 assert(s);
1338
1339 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1340}
1341
87f0e418
LP		 1342static UnitActiveState service_active_state(Unit *u) {
1343 assert(u);
5cb5a6ff 1344
acbb0225 1345 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1346}
1347
1348static int main_pid_good(Service *s) {
1349 assert(s);
1350
1351 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1352 * don't know */
1353
1354 /* If we know the pid file, then lets just check if it is
1355 * still valid */
1356 if (s->main_pid_known)
1357 return s->main_pid > 0;
1358
1359 /* We don't know the pid */
8e274523 1360 return -EAGAIN;
034c6ed7
LP		 1361}
1362
1363static bool control_pid_good(Service *s) {
1364 assert(s);
5cb5a6ff 1365
034c6ed7 1366 return s->control_pid > 0;
5cb5a6ff
LP		 1367}
1368
8e274523
LP		 1369static int cgroup_good(Service *s) {
1370 assert(s);
1371
1372 if (s->valid_no_process)
1373 return -EAGAIN;
1374
1375 return cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings);
1376}
1377
87f0e418
LP		 1378static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1379 Service *s = SERVICE(u);
034c6ed7 1380 bool success;
5cb5a6ff
LP		 1381
1382 assert(s);
034c6ed7
LP		 1383 assert(pid >= 0);
1384
bd982a8b 1385 success = code == CLD_EXITED && status == 0;
034c6ed7
LP		 1386 s->failure = s->failure || !success;
1387
1388 if (s->main_pid == pid) {
1389
1390 exec_status_fill(&s->main_exec_status, pid, code, status);
1391 s->main_pid = 0;
1392
7d55e835 1393 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
034c6ed7
LP		 1394 assert(s->exec_command[SERVICE_EXEC_START]);
1395 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1396 }
1397
94f04347 1398 log_debug("%s: main process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1399
1400 /* The service exited, so the service is officially
1401 * gone. */
1402
1403 switch (s->state) {
1404
1405 case SERVICE_START_POST:
1406 case SERVICE_RELOAD:
1407 case SERVICE_STOP:
1408 /* Need to wait until the operation is
1409 * done */
1410 break;
1411
7d55e835
LP		 1412 case SERVICE_START:
1413 assert(s->type == SERVICE_FINISH);
1414
1415 /* This was our main goal, so let's go on */
1416 if (success)
1417 service_enter_start_post(s);
1418 else
1419 service_enter_stop(s, false);
1420 break;
1421
034c6ed7
LP		 1422 case SERVICE_RUNNING:
1423 service_enter_stop(s, success);
1424 break;
1425
1426 case SERVICE_STOP_SIGTERM:
1427 case SERVICE_STOP_SIGKILL:
1428
1429 if (!control_pid_good(s))
1430 service_enter_stop_post(s, success);
5cb5a6ff 1431
034c6ed7
LP		 1432 /* If there is still a control process, wait for that first */
1433 break;
5cb5a6ff 1434
034c6ed7
LP		 1435 default:
1436 assert_not_reached("Uh, main process died at wrong time.");
1437 }
5cb5a6ff 1438
034c6ed7
LP		 1439 } else if (s->control_pid == pid) {
1440 assert(s->control_command);
1441
1442 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1443 s->control_pid = 0;
1444
94f04347 1445 log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1446
1447 /* If we are shutting things down anyway we
1448 * don't care about failing commands. */
1449
1450 if (s->control_command->command_next &&
b866264a 1451 (success || (s->state == SERVICE_STOP || s->state == SERVICE_STOP_POST)))
034c6ed7
LP		 1452
1453 /* There is another command to *
1454 * execute, so let's do that. */
1455
1456 service_run_next(s, success);
1457
1458 else {
1459 /* No further commands for this step, so let's
1460 * figure out what to do next */
1461
94f04347 1462 log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
bd982a8b 1463
034c6ed7
LP		 1464 switch (s->state) {
1465
1466 case SERVICE_START_PRE:
1467 if (success)
1468 service_enter_start(s);
1469 else
1470 service_enter_stop(s, false);
1471 break;
1472
1473 case SERVICE_START:
1474 assert(s->type == SERVICE_FORKING);
1475
1476 /* Let's try to load the pid
1477 * file here if we can. We
1478 * ignore the return value,
1479 * since the PID file might
1480 * actually be created by a
1481 * START_POST script */
1482
1483 if (success) {
1484 if (s->pid_file)
1485 service_load_pid_file(s);
1486
1487 service_enter_start_post(s);
1488 } else
1489 service_enter_stop(s, false);
1490
1491 break;
1492
1493 case SERVICE_START_POST:
1494 if (success && s->pid_file && !s->main_pid_known) {
1495 int r;
1496
1497 /* Hmm, let's see if we can
1498 * load the pid now after the
1499 * start-post scripts got
1500 * executed. */
1501
1502 if ((r = service_load_pid_file(s)) < 0)
87f0e418 1503 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
034c6ed7
LP		 1504 }
1505
1506 /* Fall through */
1507
1508 case SERVICE_RELOAD:
1509 if (success) {
8e274523 1510 if (main_pid_good(s) != 0 && cgroup_good(s) != 0)
034c6ed7
LP		 1511 service_set_state(s, SERVICE_RUNNING);
1512 else
1513 service_enter_stop(s, true);
1514 } else
1515 service_enter_stop(s, false);
1516
1517 break;
1518
1519 case SERVICE_STOP:
1520 if (main_pid_good(s) > 0)
1521 /* Still not dead and we know the PID? Let's go hunting. */
1522 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
1523 else
1524 service_enter_stop_post(s, success);
1525 break;
1526
1527 case SERVICE_STOP_SIGTERM:
1528 case SERVICE_STOP_SIGKILL:
1529 if (main_pid_good(s) <= 0)
1530 service_enter_stop_post(s, success);
1531
1532 /* If there is still a service
1533 * process around, wait until
1534 * that one quit, too */
1535 break;
1536
1537 case SERVICE_STOP_POST:
1538 case SERVICE_FINAL_SIGTERM:
1539 case SERVICE_FINAL_SIGKILL:
1540 service_enter_dead(s, success, true);
1541 break;
1542
1543 default:
1544 assert_not_reached("Uh, control process died at wrong time.");
1545 }
1546 }
1547 } else
1548 assert_not_reached("Got SIGCHLD for unkown PID");
1549}
1550
acbb0225 1551static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 1552 Service *s = SERVICE(u);
034c6ed7
LP		 1553
1554 assert(s);
1555 assert(elapsed == 1);
1556
acbb0225 1557 assert(w == &s->timer_watch);
034c6ed7
LP		 1558
1559 switch (s->state) {
1560
1561 case SERVICE_START_PRE:
1562 case SERVICE_START:
1563 case SERVICE_START_POST:
1564 case SERVICE_RELOAD:
87f0e418 1565 log_warning("%s operation timed out. Stopping.", unit_id(u));
034c6ed7
LP		 1566 service_enter_stop(s, false);
1567 break;
1568
1569 case SERVICE_STOP:
87f0e418 1570 log_warning("%s stopping timed out. Terminating.", unit_id(u));
034c6ed7
LP		 1571 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1572 break;
1573
1574 case SERVICE_STOP_SIGTERM:
87f0e418 1575 log_warning("%s stopping timed out. Killing.", unit_id(u));
034c6ed7
LP		 1576 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
1577 break;
1578
1579 case SERVICE_STOP_SIGKILL:
1580 /* Uh, wie sent a SIGKILL and it is still not gone?
1581 * Must be something we cannot kill, so let's just be
1582 * weirded out and continue */
1583
87f0e418 1584 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
034c6ed7
LP		 1585 service_enter_stop_post(s, false);
1586 break;
1587
1588 case SERVICE_STOP_POST:
87f0e418 1589 log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
034c6ed7
LP		 1590 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1591 break;
1592
1593 case SERVICE_FINAL_SIGTERM:
87f0e418 1594 log_warning("%s stopping timed out (2). Killing.", unit_id(u));
034c6ed7
LP		 1595 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
1596 break;
1597
1598 case SERVICE_FINAL_SIGKILL:
87f0e418 1599 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
034c6ed7
LP		 1600 service_enter_dead(s, false, true);
1601 break;
1602
1603 case SERVICE_AUTO_RESTART:
87f0e418 1604 log_debug("%s holdoff time over, scheduling restart.", unit_id(u));
034c6ed7
LP		 1605 service_enter_restart(s);
1606 break;
1607
1608 default:
1609 assert_not_reached("Timeout at wrong time.");
1610 }
5cb5a6ff
LP		 1611}
1612
8e274523
LP		 1613static void service_cgroup_notify_event(Unit *u) {
1614 Service *s = SERVICE(u);
1615
1616 assert(u);
1617
1618 log_debug("%s: cgroup is empty", unit_id(u));
1619
1620 switch (s->state) {
1621
1622 /* Waiting for SIGCHLD is usually more interesting,
1623 * because it includes return codes/signals. Which is
1624 * why we ignore the cgroup events for most cases,
1625 * except when we don't know pid which to expect the
1626 * SIGCHLD for. */
1627
1628 case SERVICE_RUNNING:
1629
1630 if (!s->valid_no_process && main_pid_good(s) <= 0)
1631 service_enter_stop(s, true);
1632
1633 break;
1634
1635 default:
1636 ;
1637 }
1638}
1639
2c4104f0
LP		 1640static int service_enumerate(Manager *m) {
1641
1642 static const char * const rcnd[] = {
1643 "../rc0.d", SPECIAL_RUNLEVEL0_TARGET,
1644 "../rc1.d", SPECIAL_RUNLEVEL1_TARGET,
1645 "../rc2.d", SPECIAL_RUNLEVEL2_TARGET,
1646 "../rc3.d", SPECIAL_RUNLEVEL3_TARGET,
1647 "../rc4.d", SPECIAL_RUNLEVEL4_TARGET,
1648 "../rc5.d", SPECIAL_RUNLEVEL5_TARGET,
1649 "../rc6.d", SPECIAL_RUNLEVEL6_TARGET
1650 };
1651
1652 char **p;
1653 unsigned i;
1654 DIR *d = NULL;
1655 char *path = NULL, *fpath = NULL, *name = NULL;
1656 int r;
1657
1658 assert(m);
1659
1660 STRV_FOREACH(p, m->sysvinit_path)
1661 for (i = 0; i < ELEMENTSOF(rcnd); i += 2) {
1662 struct dirent *de;
1663
1664 free(path);
1665 path = NULL;
1666 if (asprintf(&path, "%s/%s", *p, rcnd[i]) < 0) {
1667 r = -ENOMEM;
1668 goto finish;
1669 }
1670
1671 if (d)
1672 closedir(d);
1673
1674 if (!(d = opendir(path))) {
1675 if (errno != ENOENT)
1676 log_warning("opendir() failed on %s: %s", path, strerror(errno));
1677
1678 continue;
1679 }
1680
1681 while ((de = readdir(d))) {
1682 Unit *runlevel, *service;
1683
1684 if (ignore_file(de->d_name))
1685 continue;
1686
1687 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
1688 continue;
1689
1690 if (strlen(de->d_name) < 4)
1691 continue;
1692
1693 free(fpath);
1694 fpath = NULL;
1695 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd[i], de->d_name) < 0) {
1696 r = -ENOMEM;
1697 goto finish;
1698 }
1699
1700 if (access(fpath, X_OK) < 0) {
1701
1702 if (errno != ENOENT)
1703 log_warning("access() failed on %s: %s", fpath, strerror(errno));
1704
1705 continue;
1706 }
1707
1708 free(name);
1709 name = NULL;
1710 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
1711 r = -ENOMEM;
1712 goto finish;
1713 }
1714
1715 if ((r = manager_load_unit(m, name, &service)) < 0)
1716 goto finish;
1717
2c4104f0
LP		 1718 if ((r = manager_load_unit(m, rcnd[i+1], &runlevel)) < 0)
1719 goto finish;
1720
1721 if (de->d_name[0] == 'S') {
1722 if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
1723 goto finish;
1724
1725 if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
1726 goto finish;
1727 } else {
1728 if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
1729 goto finish;
1730
1731 if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
1732 goto finish;
1733 }
1734 }
1735 }
1736
1737 r = 0;
1738
1739finish:
1740 free(path);
1741 free(fpath);
1742 free(name);
1743 closedir(d);
1744
1745 return r;
1746}
1747
94f04347
LP		 1748static const char* const service_state_table[_SERVICE_STATE_MAX] = {
1749 [SERVICE_DEAD] = "dead",
1750 [SERVICE_START_PRE] = "start-pre",
1751 [SERVICE_START] = "start",
1752 [SERVICE_START_POST] = "start-post",
1753 [SERVICE_RUNNING] = "running",
1754 [SERVICE_RELOAD] = "reload",
1755 [SERVICE_STOP] = "stop",
1756 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
1757 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
1758 [SERVICE_STOP_POST] = "stop-post",
1759 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
1760 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
1761 [SERVICE_MAINTAINANCE] = "maintainance",
1762 [SERVICE_AUTO_RESTART] = "auto-restart",
1763};
1764
1765DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
1766
1767static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
1768 [SERVICE_ONCE] = "once",
1769 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
1770 [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
1771};
1772
1773DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
1774
1775static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
1776 [SERVICE_FORKING] = "forking",
1777 [SERVICE_SIMPLE] = "simple",
1778 [SERVICE_FINISH] = "finish"
1779};
1780
1781DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
1782
1783static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
1784 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
1785 [SERVICE_EXEC_START] = "ExecStart",
1786 [SERVICE_EXEC_START_POST] = "ExecStartPost",
1787 [SERVICE_EXEC_RELOAD] = "ExecReload",
1788 [SERVICE_EXEC_STOP] = "ExecStop",
1789 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
1790};
1791
1792DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
1793
87f0e418 1794const UnitVTable service_vtable = {
5cb5a6ff
LP		 1795 .suffix = ".service",
1796
034c6ed7
LP		 1797 .init = service_init,
1798 .done = service_done,
1799
5cb5a6ff
LP		 1800 .dump = service_dump,
1801
1802 .start = service_start,
1803 .stop = service_stop,
1804 .reload = service_reload,
1805
034c6ed7
LP		 1806 .can_reload = service_can_reload,
1807
5cb5a6ff
LP		 1808 .active_state = service_active_state,
1809
034c6ed7
LP		 1810 .sigchld_event = service_sigchld_event,
1811 .timer_event = service_timer_event,
2c4104f0 1812
8e274523
LP		 1813 .cgroup_notify_empty = service_cgroup_notify_event,
1814
2c4104f0 1815 .enumerate = service_enumerate
5cb5a6ff 1816};
Unnamed repository; edit this file 'description' to name the repository.