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systemctl: minor output fix
[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
23a177ef 38static const char * const rcnd_table[] = {
adcbe07c
LP		 39 "/rc0.d", SPECIAL_RUNLEVEL0_TARGET,
40 "/rc1.d", SPECIAL_RUNLEVEL1_TARGET,
41 "/rc2.d", SPECIAL_RUNLEVEL2_TARGET,
42 "/rc3.d", SPECIAL_RUNLEVEL3_TARGET,
43 "/rc4.d", SPECIAL_RUNLEVEL4_TARGET,
44 "/rc5.d", SPECIAL_RUNLEVEL5_TARGET,
45 "/rc6.d", SPECIAL_RUNLEVEL6_TARGET,
46 "/boot.d", SPECIAL_BASIC_TARGET
23a177ef
LP		 47};
48
acbb0225 49static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
87f0e418
LP		 50 [SERVICE_DEAD] = UNIT_INACTIVE,
51 [SERVICE_START_PRE] = UNIT_ACTIVATING,
52 [SERVICE_START] = UNIT_ACTIVATING,
53 [SERVICE_START_POST] = UNIT_ACTIVATING,
54 [SERVICE_RUNNING] = UNIT_ACTIVE,
55 [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
56 [SERVICE_STOP] = UNIT_DEACTIVATING,
57 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
58 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
59 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
60 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
61 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
62 [SERVICE_MAINTAINANCE] = UNIT_INACTIVE,
63 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
034c6ed7 64};
5cb5a6ff 65
87f0e418
LP		 66static void service_done(Unit *u) {
67 Service *s = SERVICE(u);
44d8db9e
LP		 68
69 assert(s);
70
71 free(s->pid_file);
72 s->pid_file = NULL;
73
2c4104f0
LP		 74 free(s->sysv_path);
75 s->sysv_path = NULL;
76
8309400a
LP		 77 free(s->sysv_runlevels);
78 s->sysv_runlevels = NULL;
79
44d8db9e
LP		 80 exec_context_done(&s->exec_context);
81 exec_command_free_array(s->exec_command, _SERVICE_EXEC_MAX);
82 s->control_command = NULL;
83
84 /* This will leak a process, but at least no memory or any of
85 * our resources */
86 if (s->main_pid > 0) {
87f0e418 87 unit_unwatch_pid(u, s->main_pid);
44d8db9e
LP		 88 s->main_pid = 0;
89 }
90
91 if (s->control_pid > 0) {
87f0e418 92 unit_unwatch_pid(u, s->control_pid);
44d8db9e
LP		 93 s->control_pid = 0;
94 }
95
acbb0225 96 unit_unwatch_timer(u, &s->timer_watch);
44d8db9e
LP		 97}
98
2c4104f0
LP		 99static int sysv_translate_name(const char *name, char **_r) {
100
101 static const char * const table[] = {
102 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
103 "$network", SPECIAL_NETWORK_TARGET,
104 "$named", SPECIAL_NSS_LOOKUP_TARGET,
105 "$portmap", SPECIAL_RPCBIND_TARGET,
106 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
107 "$syslog", SPECIAL_SYSLOG_TARGET,
108 "$time", SPECIAL_RTC_SET_TARGET
109 };
110
111 unsigned i;
112 char *r;
113
114 for (i = 0; i < ELEMENTSOF(table); i += 2)
115 if (streq(table[i], name)) {
116 if (!(r = strdup(table[i+1])))
117 return -ENOMEM;
118
119 goto finish;
120 }
121
122 if (*name == '$')
123 return 0;
124
125 if (asprintf(&r, "%s.service", name) < 0)
126 return -ENOMEM;
127
128finish:
129
130 if (_r)
131 *_r = r;
132
133 return 1;
134}
135
136static int sysv_chkconfig_order(Service *s) {
137 Meta *other;
138 int r;
139
140 assert(s);
141
142 if (s->sysv_start_priority < 0)
143 return 0;
144
23a177ef
LP		 145 /* For each pair of services where at least one lacks a LSB
146 * header, we use the start priority value to order things. */
2c4104f0
LP		 147
148 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
149 Service *t;
150 UnitDependency d;
151
152 t = (Service*) other;
153
154 if (s == t)
155 continue;
156
157 if (t->sysv_start_priority < 0)
158 continue;
159
23a177ef
LP		 160 if (s->sysv_has_lsb && t->sysv_has_lsb)
161 continue;
162
2c4104f0
LP		 163 if (t->sysv_start_priority < s->sysv_start_priority)
164 d = UNIT_AFTER;
165 else if (t->sysv_start_priority > s->sysv_start_priority)
166 d = UNIT_BEFORE;
167 else
168 continue;
169
170 /* FIXME: Maybe we should compare the name here lexicographically? */
171
172 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t))) < 0)
173 return r;
174 }
175
176 return 0;
177}
178
179static ExecCommand *exec_command_new(const char *path, const char *arg1) {
180 ExecCommand *c;
181
182 if (!(c = new0(ExecCommand, 1)))
183 return NULL;
184
185 if (!(c->path = strdup(path))) {
186 free(c);
187 return NULL;
188 }
189
190 if (!(c->argv = strv_new(path, arg1, NULL))) {
191 free(c->path);
192 free(c);
193 return NULL;
194 }
195
196 return c;
197}
198
199static int sysv_exec_commands(Service *s) {
200 ExecCommand *c;
201
202 assert(s);
203 assert(s->sysv_path);
204
205 if (!(c = exec_command_new(s->sysv_path, "start")))
206 return -ENOMEM;
207 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
208
209 if (!(c = exec_command_new(s->sysv_path, "stop")))
210 return -ENOMEM;
211 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
212
213 if (!(c = exec_command_new(s->sysv_path, "reload")))
214 return -ENOMEM;
215 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
216
217 return 0;
218}
219
23a177ef
LP		 220static int priority_from_rcd(Service *s, const char *init_script) {
221 char **p;
222 unsigned i;
223
061978fa 224 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvrcnd_path)
23a177ef
LP		 225 for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) {
226 char *path;
227 DIR *d;
228 struct dirent *de;
229
230 if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0)
231 return -ENOMEM;
232
233 d = opendir(path);
234 free(path);
235
236 if (!d) {
237 if (errno != ENOENT)
238 log_warning("opendir() failed on %s: %s", path, strerror(errno));
239
240 continue;
241 }
242
243 while ((de = readdir(d))) {
244 int a, b;
245
246 if (ignore_file(de->d_name))
247 continue;
248
249 if (de->d_name[0] != 'S')
250 continue;
251
252 if (strlen(de->d_name) < 4)
253 continue;
254
255 if (!streq(de->d_name + 3, init_script))
256 continue;
257
258 /* Yay, we found it! Now decode the priority */
259
260 a = undecchar(de->d_name[1]);
261 b = undecchar(de->d_name[2]);
262
263 if (a < 0 || b < 0)
264 continue;
265
266 s->sysv_start_priority = a*10 + b;
267
268 log_debug("Determined priority %i from link farm for %s", s->sysv_start_priority, unit_id(UNIT(s)));
269
270 closedir(d);
271 return 0;
272 }
273
274 closedir(d);
275 }
276
277 return 0;
278}
279
280static int service_load_sysv_path(Service *s, const char *path, UnitLoadState *new_state) {
2c4104f0
LP		 281 FILE *f;
282 Unit *u;
283 unsigned line = 0;
284 int r;
285 enum {
286 NORMAL,
287 DESCRIPTION,
288 LSB,
289 LSB_DESCRIPTION
290 } state = NORMAL;
23a177ef
LP		 291
292 assert(s);
293 assert(path);
294 assert(new_state);
2c4104f0
LP		 295
296 u = UNIT(s);
297
298 if (!(f = fopen(path, "re"))) {
299 r = errno == ENOENT ? 0 : -errno;
300 goto finish;
301 }
302
303 s->type = SERVICE_FORKING;
304 s->restart = SERVICE_ONCE;
305
306 free(s->sysv_path);
307 if (!(s->sysv_path = strdup(path))) {
308 r = -ENOMEM;
309 goto finish;
310 }
311
312 while (!feof(f)) {
313 char l[LINE_MAX], *t;
314
315 if (!fgets(l, sizeof(l), f)) {
316 if (feof(f))
317 break;
318
319 r = -errno;
320 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
321 goto finish;
322 }
323
324 line++;
325
326 t = strstrip(l);
327 if (*t != '#')
328 continue;
329
330 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
331 state = LSB;
23a177ef 332 s->sysv_has_lsb = true;
2c4104f0
LP		 333 continue;
334 }
335
336 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
337 state = NORMAL;
338 continue;
339 }
340
341 t++;
342 t += strspn(t, WHITESPACE);
343
344 if (state == NORMAL) {
345
346 /* Try to parse Red Hat style chkconfig headers */
347
348 if (startswith(t, "chkconfig:")) {
349 int start_priority;
8309400a 350 char runlevels[16], *k;
2c4104f0
LP		 351
352 state = NORMAL;
353
8309400a
LP		 354 if (sscanf(t+10, "%15s %i %*i",
355 runlevels,
356 &start_priority) != 2) {
2c4104f0
LP		 357
358 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
359 continue;
360 }
361
8309400a 362 if (start_priority < 0 || start_priority > 99)
2c4104f0 363 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
8309400a
LP		 364 else
365 s->sysv_start_priority = start_priority;
366
367 char_array_0(runlevels);
368 k = delete_chars(runlevels, WHITESPACE "-");
369
370 if (k[0]) {
371 char *d;
372
373 if (!(d = strdup(k))) {
374 r = -ENOMEM;
375 goto finish;
376 }
377
378 free(s->sysv_runlevels);
379 s->sysv_runlevels = d;
2c4104f0
LP		 380 }
381
2c4104f0
LP		 382
383 } else if (startswith(t, "description:")) {
384
385 size_t k = strlen(t);
386 char *d;
387
388 if (t[k-1] == '\\') {
389 state = DESCRIPTION;
390 t[k-1] = 0;
391 }
392
393 if (!(d = strdup(strstrip(t+12)))) {
394 r = -ENOMEM;
395 goto finish;
396 }
397
398 free(u->meta.description);
399 u->meta.description = d;
400
401 } else if (startswith(t, "pidfile:")) {
402
403 char *fn;
404
405 state = NORMAL;
406
407 fn = strstrip(t+8);
408 if (!path_is_absolute(fn)) {
409 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
410 continue;
411 }
412
413 if (!(fn = strdup(fn))) {
414 r = -ENOMEM;
415 goto finish;
416 }
417
418 free(s->pid_file);
419 s->pid_file = fn;
420 }
421
422 } else if (state == DESCRIPTION) {
423
424 /* Try to parse Red Hat style description
425 * continuation */
426
427 size_t k = strlen(t);
428 char *d;
429
430 if (t[k-1] == '\\')
431 t[k-1] = 0;
432 else
433 state = NORMAL;
434
435 assert(u->meta.description);
436 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
437 r = -ENOMEM;
438 goto finish;
439 }
440
441 free(u->meta.description);
442 u->meta.description = d;
443
444 } else if (state == LSB || state == LSB_DESCRIPTION) {
445
446 if (startswith(t, "Provides:")) {
447 char *i, *w;
448 size_t z;
449
450 state = LSB;
451
452 FOREACH_WORD(w, z, t+9, i) {
453 char *n, *m;
454
455 if (!(n = strndup(w, z))) {
456 r = -ENOMEM;
457 goto finish;
458 }
459
460 r = sysv_translate_name(n, &m);
461 free(n);
462
463 if (r < 0)
464 goto finish;
465
466 if (r == 0)
467 continue;
468
bd77d0fc
LP		 469 if (unit_name_to_type(m) == UNIT_SERVICE)
470 r = unit_add_name(u, m);
471 else {
472 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m)) >= 0)
473 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m);
474 }
475
2c4104f0
LP		 476 free(m);
477
478 if (r < 0)
479 goto finish;
480 }
481
482 } else if (startswith(t, "Required-Start:") ||
483 startswith(t, "Should-Start:")) {
484 char *i, *w;
485 size_t z;
486
487 state = LSB;
488
489 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
490 char *n, *m;
491
492 if (!(n = strndup(w, z))) {
493 r = -ENOMEM;
494 goto finish;
495 }
496
497 r = sysv_translate_name(n, &m);
498 free(n);
499
500 if (r < 0)
501 goto finish;
502
503 if (r == 0)
504 continue;
505
fc22fc6e 506 r = unit_add_dependency_by_name(u, UNIT_AFTER, m);
2c4104f0
LP		 507 free(m);
508
509 if (r < 0)
510 goto finish;
511 }
8309400a
LP		 512 } else if (startswith(t, "Default-Start:")) {
513 char *k, *d;
514
515 state = LSB;
516
517 k = delete_chars(t+14, WHITESPACE "-");
518
519 if (k[0] != 0) {
520 if (!(d = strdup(k))) {
521 r = -ENOMEM;
522 goto finish;
523 }
524
525 free(s->sysv_runlevels);
526 s->sysv_runlevels = d;
527 }
2c4104f0
LP		 528
529 } else if (startswith(t, "Description:")) {
530 char *d;
531
532 state = LSB_DESCRIPTION;
533
534 if (!(d = strdup(strstrip(t+12)))) {
535 r = -ENOMEM;
536 goto finish;
537 }
538
539 free(u->meta.description);
540 u->meta.description = d;
541
8309400a
LP		 542 } else if (startswith(t, "Short-Description:") &&
543 !u->meta.description) {
2c4104f0
LP		 544 char *d;
545
546 /* We use the short description only
547 * if no long description is set. */
548
549 state = LSB;
550
551 if (!(d = strdup(strstrip(t+18)))) {
552 r = -ENOMEM;
553 goto finish;
554 }
555
2c4104f0
LP		 556 u->meta.description = d;
557
558 } else if (state == LSB_DESCRIPTION) {
559
560 if (startswith(l, "#\t") || startswith(l, "# ")) {
561 char *d;
562
563 assert(u->meta.description);
564 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
565 r = -ENOMEM;
566 goto finish;
567 }
568
569 free(u->meta.description);
570 u->meta.description = d;
571 } else
572 state = LSB;
573 }
574 }
575 }
576
23a177ef
LP		 577 /* If init scripts have no LSB header, then we enforce the
578 * ordering via the chkconfig priorities. We try to determine
579 * a priority for *all* init scripts here, since they are
580 * needed as soon as at least one non-LSB script is used. */
2c4104f0 581
23a177ef
LP		 582 if (s->sysv_start_priority < 0) {
583 log_debug("%s has no chkconfig header, trying to determine SysV priority from link farm.", unit_id(u));
584
585 if ((r = priority_from_rcd(s, file_name_from_path(path))) < 0)
2c4104f0
LP		 586 goto finish;
587
23a177ef
LP		 588 if (s->sysv_start_priority < 0)
589 log_warning("%s has neither a chkconfig header nor a directory link, cannot order unit!", unit_id(u));
590 }
591
2c4104f0
LP		 592 if ((r = sysv_exec_commands(s)) < 0)
593 goto finish;
594
0bc824be
LP		 595 if (!s->sysv_runlevels || chars_intersect("12345", s->sysv_runlevels)) {
596 /* If there a runlevels configured for this service
597 * but none of the standard ones, then we assume this
598 * is some special kind of service (which might be
599 * needed for early boot) and don't create any links
600 * to it. */
601
602 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET)) < 0 ||
603 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET)) < 0)
604 goto finish;
605 }
0fd030be 606
23a177ef
LP		 607 *new_state = UNIT_LOADED;
608 r = 0;
2c4104f0
LP		 609
610finish:
611
612 if (f)
613 fclose(f);
614
615 return r;
616}
617
23a177ef 618static int service_load_sysv_name(Service *s, const char *name, UnitLoadState *new_state) {
2c4104f0
LP		 619 char **p;
620
621 assert(s);
622 assert(name);
623
624 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
625 char *path;
626 int r;
627
628 if (asprintf(&path, "%s/%s", *p, name) < 0)
629 return -ENOMEM;
630
631 assert(endswith(path, ".service"));
632 path[strlen(path)-8] = 0;
633
23a177ef 634 r = service_load_sysv_path(s, path, new_state);
2c4104f0
LP		 635 free(path);
636
23a177ef 637 if (r < 0)
2c4104f0 638 return r;
23a177ef
LP		 639
640 if (*new_state != UNIT_STUB)
641 break;
2c4104f0
LP		 642 }
643
644 return 0;
645}
646
23a177ef 647static int service_load_sysv(Service *s, UnitLoadState *new_state) {
2c4104f0
LP		 648 const char *t;
649 Iterator i;
650 int r;
651
5cb5a6ff 652 assert(s);
23a177ef 653 assert(new_state);
5cb5a6ff
LP		 654
655 /* Load service data from SysV init scripts, preferably with
656 * LSB headers ... */
657
2c4104f0
LP		 658 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
659 return 0;
660
661 if ((t = unit_id(UNIT(s))))
23a177ef 662 if ((r = service_load_sysv_name(s, t, new_state)) < 0)
2c4104f0
LP		 663 return r;
664
23a177ef
LP		 665 if (*new_state == UNIT_STUB)
666 SET_FOREACH(t, UNIT(s)->meta.names, i) {
667 if ((r == service_load_sysv_name(s, t, new_state)) < 0)
668 return r;
669
670 if (*new_state != UNIT_STUB)
671 break;
672 }
2c4104f0
LP		 673
674 return 0;
5cb5a6ff
LP		 675}
676
23a177ef 677static int service_init(Unit *u, UnitLoadState *new_state) {
5cb5a6ff 678 int r;
87f0e418 679 Service *s = SERVICE(u);
5cb5a6ff
LP		 680
681 assert(s);
23a177ef
LP		 682 assert(new_state);
683 assert(*new_state == UNIT_STUB);
5cb5a6ff 684
034c6ed7
LP		 685 /* First, reset everything to the defaults, in case this is a
686 * reload */
687
688 s->type = 0;
689 s->restart = 0;
690
691 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
692 s->restart_usec = DEFAULT_RESTART_USEC;
693
694 exec_context_init(&s->exec_context);
695
acbb0225 696 s->timer_watch.type = WATCH_INVALID;
034c6ed7
LP		 697
698 s->state = SERVICE_DEAD;
5cb5a6ff 699
2c4104f0 700 s->sysv_start_priority = -1;
81a2b7ce
LP		 701 s->permissions_start_only = false;
702 s->root_directory_start_only = false;
50159e6a
LP		 703 s->valid_no_process = false;
704 s->kill_mode = 0;
23a177ef 705 s->sysv_has_lsb = false;
50159e6a
LP		 706 s->main_pid = s->control_pid = 0;
707 s->main_pid_known = false;
708 s->failure = false;
23a177ef 709
1e2e8133
LP		 710 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
711
5cb5a6ff 712 /* Load a .service file */
23a177ef 713 if ((r = unit_load_fragment(u, new_state)) < 0)
5cb5a6ff
LP		 714 return r;
715
bd77d0fc 716 /* Load a classic init script as a fallback, if we couldn't find anything */
23a177ef
LP		 717 if (*new_state == UNIT_STUB)
718 if ((r = service_load_sysv(s, new_state)) < 0)
719 return r;
d46de8a1 720
23a177ef
LP		 721 /* Still nothing found? Then let's give up */
722 if (*new_state == UNIT_STUB)
723 return -ENOENT;
034c6ed7 724
23a177ef
LP		 725 /* We were able to load something, then let's add in the
726 * dropin directories. */
727 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 728 return r;
23a177ef
LP		 729
730 /* This is a new unit? Then let's add in some extras */
731 if (*new_state == UNIT_LOADED) {
732 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
733 return r;
734
735 if ((r = unit_add_default_cgroup(u)) < 0)
736 return r;
737
738 if ((r = sysv_chkconfig_order(s)) < 0)
739 return r;
8e274523
LP		 740 }
741
44d8db9e 742 return 0;
034c6ed7
LP		 743}
744
87f0e418 745static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 746
5cb5a6ff 747 ServiceExecCommand c;
87f0e418 748 Service *s = SERVICE(u);
47be870b
LP		 749 const char *prefix2;
750 char *p2;
5cb5a6ff
LP		 751
752 assert(s);
753
47be870b
LP		 754 p2 = strappend(prefix, "\t");
755 prefix2 = p2 ? p2 : prefix;
44d8db9e 756
5cb5a6ff 757 fprintf(f,
81a2b7ce
LP		 758 "%sService State: %s\n"
759 "%sPermissionsStartOnly: %s\n"
8e274523 760 "%sRootDirectoryStartOnly: %s\n"
03d6ab85 761 "%sValidNoProcess: %s\n"
50159e6a 762 "%sKillMode: %s\n"
03d6ab85 763 "%sType: %s\n",
81a2b7ce
LP		 764 prefix, service_state_to_string(s->state),
765 prefix, yes_no(s->permissions_start_only),
8e274523 766 prefix, yes_no(s->root_directory_start_only),
03d6ab85 767 prefix, yes_no(s->valid_no_process),
50159e6a 768 prefix, kill_mode_to_string(s->kill_mode),
03d6ab85 769 prefix, service_type_to_string(s->type));
5cb5a6ff 770
70123e68
LP		 771 if (s->control_pid > 0)
772 fprintf(f,
773 "%sControl PID: %llu\n",
774 prefix, (unsigned long long) s->control_pid);
775
776 if (s->main_pid > 0)
777 fprintf(f,
778 "%sMain PID: %llu\n",
779 prefix, (unsigned long long) s->main_pid);
780
034c6ed7
LP		 781 if (s->pid_file)
782 fprintf(f,
783 "%sPIDFile: %s\n",
784 prefix, s->pid_file);
785
5cb5a6ff
LP		 786 exec_context_dump(&s->exec_context, f, prefix);
787
788 for (c = 0; c < _SERVICE_EXEC_MAX; c++) {
5cb5a6ff 789
44d8db9e
LP		 790 if (!s->exec_command[c])
791 continue;
792
793 fprintf(f, "%s→ %s:\n",
94f04347 794 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 795
796 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 797 }
44d8db9e 798
2c4104f0
LP		 799 if (s->sysv_path)
800 fprintf(f,
23a177ef
LP		 801 "%sSysV Init Script Path: %s\n"
802 "%sSysV Init Script has LSB Header: %s\n",
803 prefix, s->sysv_path,
804 prefix, yes_no(s->sysv_has_lsb));
2c4104f0
LP		 805
806 if (s->sysv_start_priority >= 0)
807 fprintf(f,
23a177ef 808 "%sSysVStartPriority: %i\n",
2c4104f0
LP		 809 prefix, s->sysv_start_priority);
810
8309400a
LP		 811 if (s->sysv_runlevels)
812 fprintf(f, "%sSysVRunLevels: %s\n",
813 prefix, s->sysv_runlevels);
23a177ef 814
47be870b 815 free(p2);
5cb5a6ff
LP		 816}
817
034c6ed7
LP		 818static int service_load_pid_file(Service *s) {
819 char *k;
820 unsigned long p;
821 int r;
822
823 assert(s);
824
825 if (s->main_pid_known)
826 return 0;
827
828 if (!s->pid_file)
829 return -ENOENT;
830
831 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
832 return r;
833
834 if ((r = safe_atolu(k, &p)) < 0) {
835 free(k);
836 return r;
837 }
838
839 if ((unsigned long) (pid_t) p != p)
840 return -ERANGE;
841
b8c597d5
LP		 842 if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
843 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
844 (unsigned long long) p, s->pid_file);
845 return -ESRCH;
846 }
847
848 s->main_pid = (pid_t) p;
034c6ed7
LP		 849 s->main_pid_known = true;
850
851 return 0;
852}
853
3e33402a
LP		 854static int service_get_sockets(Service *s, Set **_set) {
855 Set *set;
ceee3d82
LP		 856 Iterator i;
857 char *t;
3e33402a 858 int r;
ceee3d82
LP		 859
860 assert(s);
3e33402a
LP		 861 assert(_set);
862
863 /* Collects all Socket objects that belong to this
864 * service. Note that a service might have multiple sockets
865 * via multiple names. */
866
867 if (!(set = set_new(NULL, NULL)))
868 return -ENOMEM;
ceee3d82
LP		 869
870 SET_FOREACH(t, UNIT(s)->meta.names, i) {
871 char *k;
872 Unit *p;
873
874 /* Look for all socket objects that go by any of our
875 * units and collect their fds */
876
3e33402a
LP		 877 if (!(k = unit_name_change_suffix(t, ".socket"))) {
878 r = -ENOMEM;
879 goto fail;
880 }
ceee3d82
LP		 881
882 p = manager_get_unit(UNIT(s)->meta.manager, k);
883 free(k);
884
3e33402a 885 if (!p) continue;
ceee3d82 886
3e33402a
LP		 887 if ((r = set_put(set, p)) < 0)
888 goto fail;
ceee3d82
LP		 889 }
890
3e33402a
LP		 891 *_set = set;
892 return 0;
893
894fail:
895 set_free(set);
896 return r;
897}
898
899
900static int service_notify_sockets(Service *s) {
901 Iterator i;
902 Set *set;
47be870b 903 Socket *sock;
3e33402a
LP		 904 int r;
905
906 assert(s);
907
908 /* Notifies all our sockets when we die */
909
910 if ((r = service_get_sockets(s, &set)) < 0)
911 return r;
912
47be870b
LP		 913 SET_FOREACH(sock, set, i)
914 socket_notify_service_dead(sock);
3e33402a
LP		 915
916 set_free(set);
917
ceee3d82
LP		 918 return 0;
919}
920
034c6ed7
LP		 921static void service_set_state(Service *s, ServiceState state) {
922 ServiceState old_state;
5cb5a6ff
LP		 923 assert(s);
924
034c6ed7 925 old_state = s->state;
5cb5a6ff 926 s->state = state;
034c6ed7
LP		 927
928 if (state != SERVICE_START_PRE &&
929 state != SERVICE_START &&
930 state != SERVICE_START_POST &&
931 state != SERVICE_RELOAD &&
932 state != SERVICE_STOP &&
933 state != SERVICE_STOP_SIGTERM &&
934 state != SERVICE_STOP_SIGKILL &&
935 state != SERVICE_STOP_POST &&
936 state != SERVICE_FINAL_SIGTERM &&
937 state != SERVICE_FINAL_SIGKILL &&
938 state != SERVICE_AUTO_RESTART)
acbb0225 939 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 940
7d55e835
LP		 941 if (state != SERVICE_START &&
942 state != SERVICE_START_POST &&
034c6ed7
LP		 943 state != SERVICE_RUNNING &&
944 state != SERVICE_RELOAD &&
945 state != SERVICE_STOP &&
946 state != SERVICE_STOP_SIGTERM &&
947 state != SERVICE_STOP_SIGKILL)
acbb0225 948 if (s->main_pid > 0) {
87f0e418 949 unit_unwatch_pid(UNIT(s), s->main_pid);
034c6ed7
LP		 950 s->main_pid = 0;
951 }
952
953 if (state != SERVICE_START_PRE &&
954 state != SERVICE_START &&
955 state != SERVICE_START_POST &&
956 state != SERVICE_RELOAD &&
957 state != SERVICE_STOP &&
958 state != SERVICE_STOP_SIGTERM &&
959 state != SERVICE_STOP_SIGKILL &&
960 state != SERVICE_STOP_POST &&
961 state != SERVICE_FINAL_SIGTERM &&
962 state != SERVICE_FINAL_SIGKILL)
acbb0225 963 if (s->control_pid > 0) {
87f0e418 964 unit_unwatch_pid(UNIT(s), s->control_pid);
034c6ed7
LP		 965 s->control_pid = 0;
966 }
967
968 if (state != SERVICE_START_PRE &&
969 state != SERVICE_START &&
970 state != SERVICE_START_POST &&
971 state != SERVICE_RELOAD &&
972 state != SERVICE_STOP &&
973 state != SERVICE_STOP_POST)
974 s->control_command = NULL;
975
ceee3d82
LP		 976 if (state == SERVICE_DEAD ||
977 state == SERVICE_STOP ||
978 state == SERVICE_STOP_SIGTERM ||
979 state == SERVICE_STOP_SIGKILL ||
980 state == SERVICE_STOP_POST ||
981 state == SERVICE_FINAL_SIGTERM ||
982 state == SERVICE_FINAL_SIGKILL ||
983 state == SERVICE_MAINTAINANCE ||
984 state == SERVICE_AUTO_RESTART)
985 service_notify_sockets(s);
986
a90ebccc
LP		 987 if (old_state == state)
988 return;
989
94f04347 990 log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 991
992 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 993}
994
44d8db9e
LP		 995static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
996 Iterator i;
997 int r;
998 int *rfds = NULL;
999 unsigned rn_fds = 0;
3e33402a 1000 Set *set;
47be870b 1001 Socket *sock;
44d8db9e
LP		 1002
1003 assert(s);
1004 assert(fds);
1005 assert(n_fds);
1006
3e33402a
LP		 1007 if ((r = service_get_sockets(s, &set)) < 0)
1008 return r;
1009
47be870b 1010 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 1011 int *cfds;
1012 unsigned cn_fds;
1013
47be870b 1014 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1015 goto fail;
1016
1017 if (!cfds)
1018 continue;
1019
1020 if (!rfds) {
1021 rfds = cfds;
1022 rn_fds = cn_fds;
1023 } else {
1024 int *t;
1025
1026 if (!(t = new(int, rn_fds+cn_fds))) {
1027 free(cfds);
1028 r = -ENOMEM;
1029 goto fail;
1030 }
1031
1032 memcpy(t, rfds, rn_fds);
1033 memcpy(t+rn_fds, cfds, cn_fds);
1034 free(rfds);
1035 free(cfds);
1036
1037 rfds = t;
1038 rn_fds = rn_fds+cn_fds;
1039 }
1040 }
1041
1042 *fds = rfds;
1043 *n_fds = rn_fds;
3e33402a
LP		 1044
1045 set_free(set);
1046
44d8db9e
LP		 1047 return 0;
1048
1049fail:
3e33402a 1050 set_free(set);
44d8db9e 1051 free(rfds);
3e33402a 1052
44d8db9e
LP		 1053 return r;
1054}
1055
81a2b7ce
LP		 1056static int service_spawn(
1057 Service *s,
1058 ExecCommand *c,
1059 bool timeout,
1060 bool pass_fds,
1061 bool apply_permissions,
1062 bool apply_chroot,
1063 pid_t *_pid) {
1064
034c6ed7
LP		 1065 pid_t pid;
1066 int r;
44d8db9e
LP		 1067 int *fds = NULL;
1068 unsigned n_fds = 0;
034c6ed7
LP		 1069
1070 assert(s);
1071 assert(c);
1072 assert(_pid);
1073
44d8db9e
LP		 1074 if (pass_fds)
1075 if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
1076 goto fail;
1077
034c6ed7 1078 if (timeout) {
acbb0225 1079 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1080 goto fail;
1081 } else
acbb0225 1082 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1083
81a2b7ce
LP		 1084 if ((r = exec_spawn(c,
1085 &s->exec_context,
1086 fds, n_fds,
1087 apply_permissions,
1088 apply_chroot,
8e274523 1089 UNIT(s)->meta.cgroup_bondings,
81a2b7ce 1090 &pid)) < 0)
034c6ed7
LP		 1091 goto fail;
1092
87f0e418 1093 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1094 /* FIXME: we need to do something here */
1095 goto fail;
1096
44d8db9e 1097 free(fds);
034c6ed7
LP		 1098 *_pid = pid;
1099
5cb5a6ff 1100 return 0;
034c6ed7
LP		 1101
1102fail:
44d8db9e
LP		 1103 free(fds);
1104
034c6ed7 1105 if (timeout)
acbb0225 1106 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1107
1108 return r;
1109}
1110
1111static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1112 int r;
1113 assert(s);
1114
1115 if (!success)
1116 s->failure = true;
1117
1118 if (allow_restart &&
1119 (s->restart == SERVICE_RESTART_ALWAYS ||
1120 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1121
acbb0225 1122 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1123 goto fail;
1124
1125 service_set_state(s, SERVICE_AUTO_RESTART);
1126 } else
1127 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1128
1129 return;
1130
1131fail:
87f0e418 1132 log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1133 service_enter_dead(s, false, false);
1134}
1135
1136static void service_enter_signal(Service *s, ServiceState state, bool success);
1137
1138static void service_enter_stop_post(Service *s, bool success) {
1139 int r;
1140 assert(s);
1141
1142 if (!success)
1143 s->failure = true;
1144
d6ea93e3 1145 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
81a2b7ce
LP		 1146 if ((r = service_spawn(s,
1147 s->control_command,
1148 true,
1149 false,
1150 !s->permissions_start_only,
1151 !s->root_directory_start_only,
1152 &s->control_pid)) < 0)
034c6ed7
LP		 1153 goto fail;
1154
d6ea93e3
LP		 1155
1156 service_set_state(s, SERVICE_STOP_POST);
1157
1158 if (!s->control_command)
034c6ed7
LP		 1159 service_enter_dead(s, true, true);
1160
1161 return;
1162
1163fail:
87f0e418 1164 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1165 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1166}
1167
1168static void service_enter_signal(Service *s, ServiceState state, bool success) {
1169 int r;
1170 bool sent = false;
1171
1172 assert(s);
1173
1174 if (!success)
1175 s->failure = true;
1176
1177 if (s->main_pid > 0 || s->control_pid > 0) {
1178 int sig;
1179
1180 sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1181
50159e6a 1182 if (s->kill_mode == KILL_CONTROL_GROUP) {
034c6ed7 1183
50159e6a
LP		 1184 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1185 if (r != -EAGAIN && r != -ESRCH)
1186 goto fail;
1187 } else
034c6ed7
LP		 1188 sent = true;
1189 }
1190
50159e6a
LP		 1191 if (!sent) {
1192 r = 0;
1193 if (s->main_pid > 0) {
1194 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1195 r = -errno;
1196 else
1197 sent = true;
1198 }
1199
1200 if (s->control_pid > 0) {
1201 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1202 r = -errno;
1203 else
1204 sent = true;
1205 }
1206
1207 if (r < 0)
1208 goto fail;
1209 }
d6ea93e3 1210 }
034c6ed7 1211
d6ea93e3
LP		 1212 service_set_state(s, state);
1213
1214 if (s->main_pid <= 0 && s->control_pid <= 0)
034c6ed7
LP		 1215 service_enter_dead(s, true, true);
1216
1217 return;
1218
1219fail:
87f0e418 1220 log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1221
1222 if (sent) {
1223 s->failure = true;
1224 service_set_state(s, state);
1225 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1226 service_enter_stop_post(s, false);
1227 else
1228 service_enter_dead(s, false, true);
1229}
1230
1231static void service_enter_stop(Service *s, bool success) {
1232 int r;
1233 assert(s);
1234
1235 if (!success)
1236 s->failure = true;
1237
d6ea93e3 1238 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
81a2b7ce
LP		 1239 if ((r = service_spawn(s,
1240 s->control_command,
1241 true,
1242 false,
1243 !s->permissions_start_only,
1244 !s->root_directory_start_only,
1245 &s->control_pid)) < 0)
034c6ed7
LP		 1246 goto fail;
1247
d6ea93e3
LP		 1248 service_set_state(s, SERVICE_STOP);
1249
1250 if (!s->control_command)
034c6ed7
LP		 1251 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1252
1253 return;
1254
1255fail:
87f0e418 1256 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1257 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1258}
1259
1260static void service_enter_start_post(Service *s) {
1261 int r;
1262 assert(s);
1263
d6ea93e3 1264 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST]))
81a2b7ce
LP		 1265 if ((r = service_spawn(s,
1266 s->control_command,
1267 true,
1268 false,
1269 !s->permissions_start_only,
1270 !s->root_directory_start_only,
1271 &s->control_pid)) < 0)
034c6ed7
LP		 1272 goto fail;
1273
d6ea93e3
LP		 1274
1275 service_set_state(s, SERVICE_START_POST);
1276
1277 if (!s->control_command)
034c6ed7
LP		 1278 service_set_state(s, SERVICE_RUNNING);
1279
1280 return;
1281
1282fail:
87f0e418 1283 log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1284 service_enter_stop(s, false);
1285}
1286
1287static void service_enter_start(Service *s) {
1288 pid_t pid;
1289 int r;
1290
1291 assert(s);
1292
1293 assert(s->exec_command[SERVICE_EXEC_START]);
1294 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1295
81a2b7ce
LP		 1296 if ((r = service_spawn(s,
1297 s->exec_command[SERVICE_EXEC_START],
1298 s->type == SERVICE_FORKING,
1299 true,
1300 true,
1301 true,
1302 &pid)) < 0)
034c6ed7
LP		 1303 goto fail;
1304
d6ea93e3
LP		 1305 service_set_state(s, SERVICE_START);
1306
034c6ed7
LP		 1307 if (s->type == SERVICE_SIMPLE) {
1308 /* For simple services we immediately start
1309 * the START_POST binaries. */
1310
1311 s->main_pid = pid;
1312 s->main_pid_known = true;
1313 service_enter_start_post(s);
1314
1315 } else if (s->type == SERVICE_FORKING) {
1316
1317 /* For forking services we wait until the start
1318 * process exited. */
1319
1320 s->control_pid = pid;
1321 s->control_command = s->exec_command[SERVICE_EXEC_START];
7d55e835
LP		 1322 } else if (s->type == SERVICE_FINISH) {
1323
1324 /* For finishing services we wait until the start
1325 * process exited, too, but it is our main process. */
1326
1327 s->main_pid = pid;
1328 s->control_command = s->exec_command[SERVICE_EXEC_START];
034c6ed7
LP		 1329 } else
1330 assert_not_reached("Unknown service type");
1331
1332 return;
1333
1334fail:
87f0e418 1335 log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1336 service_enter_stop(s, false);
1337}
1338
1339static void service_enter_start_pre(Service *s) {
1340 int r;
1341
1342 assert(s);
1343
d6ea93e3 1344 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
81a2b7ce
LP		 1345 if ((r = service_spawn(s,
1346 s->control_command,
1347 true,
1348 false,
1349 !s->permissions_start_only,
1350 !s->root_directory_start_only,
1351 &s->control_pid)) < 0)
034c6ed7
LP		 1352 goto fail;
1353
d6ea93e3
LP		 1354 service_set_state(s, SERVICE_START_PRE);
1355
1356 if (!s->control_command)
034c6ed7
LP		 1357 service_enter_start(s);
1358
1359 return;
1360
1361fail:
87f0e418 1362 log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1363 service_enter_dead(s, false, true);
1364}
1365
1366static void service_enter_restart(Service *s) {
1367 int r;
1368 assert(s);
1369
87f0e418 1370 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1371 goto fail;
1372
87f0e418 1373 log_debug("%s scheduled restart job.", unit_id(UNIT(s)));
034c6ed7
LP		 1374 service_enter_dead(s, true, false);
1375 return;
1376
1377fail:
1378
87f0e418 1379 log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1380 service_enter_dead(s, false, false);
1381}
1382
1383static void service_enter_reload(Service *s) {
1384 int r;
1385
1386 assert(s);
1387
d6ea93e3 1388 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
81a2b7ce
LP		 1389 if ((r = service_spawn(s,
1390 s->control_command,
1391 true,
1392 false,
1393 !s->permissions_start_only,
1394 !s->root_directory_start_only,
1395 &s->control_pid)) < 0)
034c6ed7
LP		 1396 goto fail;
1397
d6ea93e3
LP		 1398 service_set_state(s, SERVICE_RELOAD);
1399
1400 if (!s->control_command)
034c6ed7
LP		 1401 service_set_state(s, SERVICE_RUNNING);
1402
1403 return;
1404
1405fail:
87f0e418 1406 log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1407 service_enter_stop(s, false);
1408}
1409
1410static void service_run_next(Service *s, bool success) {
1411 int r;
1412
1413 assert(s);
1414 assert(s->control_command);
1415 assert(s->control_command->command_next);
1416
1417 if (!success)
1418 s->failure = true;
1419
1420 s->control_command = s->control_command->command_next;
1421
81a2b7ce
LP		 1422 if ((r = service_spawn(s,
1423 s->control_command,
1424 true,
1425 false,
1426 !s->permissions_start_only,
1427 !s->root_directory_start_only,
1428 &s->control_pid)) < 0)
034c6ed7
LP		 1429 goto fail;
1430
1431 return;
1432
1433fail:
87f0e418 1434 log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1435
1436 if (s->state == SERVICE_STOP)
1437 service_enter_stop_post(s, false);
1438 else if (s->state == SERVICE_STOP_POST)
1439 service_enter_dead(s, false, true);
1440 else
1441 service_enter_stop(s, false);
5cb5a6ff
LP		 1442}
1443
87f0e418
LP		 1444static int service_start(Unit *u) {
1445 Service *s = SERVICE(u);
5cb5a6ff
LP		 1446
1447 assert(s);
1448
034c6ed7
LP		 1449 /* We cannot fulfill this request right now, try again later
1450 * please! */
1451 if (s->state == SERVICE_STOP ||
1452 s->state == SERVICE_STOP_SIGTERM ||
1453 s->state == SERVICE_STOP_SIGKILL ||
1454 s->state == SERVICE_STOP_POST ||
1455 s->state == SERVICE_FINAL_SIGTERM ||
1456 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1457 return -EAGAIN;
1458
034c6ed7
LP		 1459 /* Already on it! */
1460 if (s->state == SERVICE_START_PRE ||
1461 s->state == SERVICE_START ||
1462 s->state == SERVICE_START_POST)
1463 return 0;
1464
1465 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1466
1e2e8133
LP		 1467 /* Make sure we don't enter a busy loop of some kind. */
1468 if (!ratelimit_test(&s->ratelimit)) {
1469 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
1470 return -EAGAIN;
1471 }
1472
034c6ed7
LP		 1473 s->failure = false;
1474 s->main_pid_known = false;
1475
1476 service_enter_start_pre(s);
1477 return 0;
5cb5a6ff
LP		 1478}
1479
87f0e418
LP		 1480static int service_stop(Unit *u) {
1481 Service *s = SERVICE(u);
5cb5a6ff
LP		 1482
1483 assert(s);
1484
034c6ed7
LP		 1485 if (s->state == SERVICE_START_PRE ||
1486 s->state == SERVICE_START ||
1487 s->state == SERVICE_START_POST ||
1488 s->state == SERVICE_RELOAD)
1489 return -EAGAIN;
1490
1491 if (s->state == SERVICE_AUTO_RESTART) {
1492 service_set_state(s, SERVICE_DEAD);
1493 return 0;
1494 }
1495
1496 assert(s->state == SERVICE_RUNNING);
5cb5a6ff 1497
034c6ed7 1498 service_enter_stop(s, true);
5cb5a6ff
LP		 1499 return 0;
1500}
1501
87f0e418
LP		 1502static int service_reload(Unit *u) {
1503 Service *s = SERVICE(u);
034c6ed7
LP		 1504
1505 assert(s);
1506
1507 assert(s->state == SERVICE_RUNNING);
1508
1509 service_enter_reload(s);
5cb5a6ff
LP		 1510 return 0;
1511}
1512
87f0e418
LP		 1513static bool service_can_reload(Unit *u) {
1514 Service *s = SERVICE(u);
034c6ed7
LP		 1515
1516 assert(s);
1517
1518 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1519}
1520
87f0e418
LP		 1521static UnitActiveState service_active_state(Unit *u) {
1522 assert(u);
5cb5a6ff 1523
acbb0225 1524 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1525}
1526
1527static int main_pid_good(Service *s) {
1528 assert(s);
1529
1530 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1531 * don't know */
1532
1533 /* If we know the pid file, then lets just check if it is
1534 * still valid */
1535 if (s->main_pid_known)
1536 return s->main_pid > 0;
1537
1538 /* We don't know the pid */
8e274523 1539 return -EAGAIN;
034c6ed7
LP		 1540}
1541
1542static bool control_pid_good(Service *s) {
1543 assert(s);
5cb5a6ff 1544
034c6ed7 1545 return s->control_pid > 0;
5cb5a6ff
LP		 1546}
1547
8e274523
LP		 1548static int cgroup_good(Service *s) {
1549 assert(s);
1550
1551 if (s->valid_no_process)
1552 return -EAGAIN;
1553
1554 return cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings);
1555}
1556
87f0e418
LP		 1557static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1558 Service *s = SERVICE(u);
034c6ed7 1559 bool success;
5cb5a6ff
LP		 1560
1561 assert(s);
034c6ed7
LP		 1562 assert(pid >= 0);
1563
bd982a8b 1564 success = code == CLD_EXITED && status == 0;
034c6ed7
LP		 1565 s->failure = s->failure || !success;
1566
1567 if (s->main_pid == pid) {
1568
1569 exec_status_fill(&s->main_exec_status, pid, code, status);
1570 s->main_pid = 0;
1571
7d55e835 1572 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
034c6ed7
LP		 1573 assert(s->exec_command[SERVICE_EXEC_START]);
1574 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1575 }
1576
50159e6a 1577 log_debug("%s: main process exited, code=%s, status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1578
1579 /* The service exited, so the service is officially
1580 * gone. */
1581
1582 switch (s->state) {
1583
1584 case SERVICE_START_POST:
1585 case SERVICE_RELOAD:
1586 case SERVICE_STOP:
1587 /* Need to wait until the operation is
1588 * done */
1589 break;
1590
7d55e835
LP		 1591 case SERVICE_START:
1592 assert(s->type == SERVICE_FINISH);
1593
1594 /* This was our main goal, so let's go on */
1595 if (success)
1596 service_enter_start_post(s);
1597 else
1598 service_enter_stop(s, false);
1599 break;
1600
034c6ed7
LP		 1601 case SERVICE_RUNNING:
1602 service_enter_stop(s, success);
1603 break;
1604
1605 case SERVICE_STOP_SIGTERM:
1606 case SERVICE_STOP_SIGKILL:
1607
1608 if (!control_pid_good(s))
1609 service_enter_stop_post(s, success);
5cb5a6ff 1610
034c6ed7
LP		 1611 /* If there is still a control process, wait for that first */
1612 break;
5cb5a6ff 1613
034c6ed7
LP		 1614 default:
1615 assert_not_reached("Uh, main process died at wrong time.");
1616 }
5cb5a6ff 1617
034c6ed7
LP		 1618 } else if (s->control_pid == pid) {
1619 assert(s->control_command);
1620
1621 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1622 s->control_pid = 0;
1623
94f04347 1624 log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1625
1626 /* If we are shutting things down anyway we
1627 * don't care about failing commands. */
1628
1629 if (s->control_command->command_next &&
b866264a 1630 (success || (s->state == SERVICE_STOP || s->state == SERVICE_STOP_POST)))
034c6ed7
LP		 1631
1632 /* There is another command to *
1633 * execute, so let's do that. */
1634
1635 service_run_next(s, success);
1636
1637 else {
1638 /* No further commands for this step, so let's
1639 * figure out what to do next */
1640
94f04347 1641 log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
bd982a8b 1642
034c6ed7
LP		 1643 switch (s->state) {
1644
1645 case SERVICE_START_PRE:
1646 if (success)
1647 service_enter_start(s);
1648 else
1649 service_enter_stop(s, false);
1650 break;
1651
1652 case SERVICE_START:
1653 assert(s->type == SERVICE_FORKING);
1654
1655 /* Let's try to load the pid
1656 * file here if we can. We
1657 * ignore the return value,
1658 * since the PID file might
1659 * actually be created by a
1660 * START_POST script */
1661
1662 if (success) {
1663 if (s->pid_file)
1664 service_load_pid_file(s);
1665
1666 service_enter_start_post(s);
1667 } else
1668 service_enter_stop(s, false);
1669
1670 break;
1671
1672 case SERVICE_START_POST:
1673 if (success && s->pid_file && !s->main_pid_known) {
1674 int r;
1675
1676 /* Hmm, let's see if we can
1677 * load the pid now after the
1678 * start-post scripts got
1679 * executed. */
1680
1681 if ((r = service_load_pid_file(s)) < 0)
87f0e418 1682 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
034c6ed7
LP		 1683 }
1684
1685 /* Fall through */
1686
1687 case SERVICE_RELOAD:
1688 if (success) {
8e274523 1689 if (main_pid_good(s) != 0 && cgroup_good(s) != 0)
034c6ed7
LP		 1690 service_set_state(s, SERVICE_RUNNING);
1691 else
1692 service_enter_stop(s, true);
1693 } else
1694 service_enter_stop(s, false);
1695
1696 break;
1697
1698 case SERVICE_STOP:
1699 if (main_pid_good(s) > 0)
1700 /* Still not dead and we know the PID? Let's go hunting. */
1701 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
1702 else
1703 service_enter_stop_post(s, success);
1704 break;
1705
1706 case SERVICE_STOP_SIGTERM:
1707 case SERVICE_STOP_SIGKILL:
1708 if (main_pid_good(s) <= 0)
1709 service_enter_stop_post(s, success);
1710
1711 /* If there is still a service
1712 * process around, wait until
1713 * that one quit, too */
1714 break;
1715
1716 case SERVICE_STOP_POST:
1717 case SERVICE_FINAL_SIGTERM:
1718 case SERVICE_FINAL_SIGKILL:
1719 service_enter_dead(s, success, true);
1720 break;
1721
1722 default:
1723 assert_not_reached("Uh, control process died at wrong time.");
1724 }
1725 }
1726 } else
1727 assert_not_reached("Got SIGCHLD for unkown PID");
1728}
1729
acbb0225 1730static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 1731 Service *s = SERVICE(u);
034c6ed7
LP		 1732
1733 assert(s);
1734 assert(elapsed == 1);
1735
acbb0225 1736 assert(w == &s->timer_watch);
034c6ed7
LP		 1737
1738 switch (s->state) {
1739
1740 case SERVICE_START_PRE:
1741 case SERVICE_START:
1742 case SERVICE_START_POST:
1743 case SERVICE_RELOAD:
87f0e418 1744 log_warning("%s operation timed out. Stopping.", unit_id(u));
034c6ed7
LP		 1745 service_enter_stop(s, false);
1746 break;
1747
1748 case SERVICE_STOP:
87f0e418 1749 log_warning("%s stopping timed out. Terminating.", unit_id(u));
034c6ed7
LP		 1750 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1751 break;
1752
1753 case SERVICE_STOP_SIGTERM:
87f0e418 1754 log_warning("%s stopping timed out. Killing.", unit_id(u));
034c6ed7
LP		 1755 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
1756 break;
1757
1758 case SERVICE_STOP_SIGKILL:
1759 /* Uh, wie sent a SIGKILL and it is still not gone?
1760 * Must be something we cannot kill, so let's just be
1761 * weirded out and continue */
1762
87f0e418 1763 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
034c6ed7
LP		 1764 service_enter_stop_post(s, false);
1765 break;
1766
1767 case SERVICE_STOP_POST:
87f0e418 1768 log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
034c6ed7
LP		 1769 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1770 break;
1771
1772 case SERVICE_FINAL_SIGTERM:
87f0e418 1773 log_warning("%s stopping timed out (2). Killing.", unit_id(u));
034c6ed7
LP		 1774 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
1775 break;
1776
1777 case SERVICE_FINAL_SIGKILL:
87f0e418 1778 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
034c6ed7
LP		 1779 service_enter_dead(s, false, true);
1780 break;
1781
1782 case SERVICE_AUTO_RESTART:
87f0e418 1783 log_debug("%s holdoff time over, scheduling restart.", unit_id(u));
034c6ed7
LP		 1784 service_enter_restart(s);
1785 break;
1786
1787 default:
1788 assert_not_reached("Timeout at wrong time.");
1789 }
5cb5a6ff
LP		 1790}
1791
8e274523
LP		 1792static void service_cgroup_notify_event(Unit *u) {
1793 Service *s = SERVICE(u);
1794
1795 assert(u);
1796
1797 log_debug("%s: cgroup is empty", unit_id(u));
1798
1799 switch (s->state) {
1800
1801 /* Waiting for SIGCHLD is usually more interesting,
1802 * because it includes return codes/signals. Which is
1803 * why we ignore the cgroup events for most cases,
1804 * except when we don't know pid which to expect the
1805 * SIGCHLD for. */
1806
1807 case SERVICE_RUNNING:
1808
1809 if (!s->valid_no_process && main_pid_good(s) <= 0)
1810 service_enter_stop(s, true);
1811
1812 break;
1813
1814 default:
1815 ;
1816 }
1817}
1818
2c4104f0 1819static int service_enumerate(Manager *m) {
2c4104f0
LP		 1820 char **p;
1821 unsigned i;
1822 DIR *d = NULL;
1823 char *path = NULL, *fpath = NULL, *name = NULL;
1824 int r;
1825
1826 assert(m);
1827
5e177ece 1828 STRV_FOREACH(p, m->sysvrcnd_path)
23a177ef 1829 for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) {
2c4104f0
LP		 1830 struct dirent *de;
1831
1832 free(path);
1833 path = NULL;
23a177ef 1834 if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0) {
2c4104f0
LP		 1835 r = -ENOMEM;
1836 goto finish;
1837 }
1838
1839 if (d)
1840 closedir(d);
1841
1842 if (!(d = opendir(path))) {
1843 if (errno != ENOENT)
1844 log_warning("opendir() failed on %s: %s", path, strerror(errno));
1845
1846 continue;
1847 }
1848
1849 while ((de = readdir(d))) {
1850 Unit *runlevel, *service;
1851
1852 if (ignore_file(de->d_name))
1853 continue;
1854
1855 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
1856 continue;
1857
1858 if (strlen(de->d_name) < 4)
1859 continue;
1860
1861 free(fpath);
1862 fpath = NULL;
23a177ef 1863 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i], de->d_name) < 0) {
2c4104f0
LP		 1864 r = -ENOMEM;
1865 goto finish;
1866 }
1867
1868 if (access(fpath, X_OK) < 0) {
1869
1870 if (errno != ENOENT)
1871 log_warning("access() failed on %s: %s", fpath, strerror(errno));
1872
1873 continue;
1874 }
1875
1876 free(name);
1877 name = NULL;
1878 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
1879 r = -ENOMEM;
1880 goto finish;
1881 }
1882
1883 if ((r = manager_load_unit(m, name, &service)) < 0)
1884 goto finish;
1885
23a177ef 1886 if ((r = manager_load_unit(m, rcnd_table[i+1], &runlevel)) < 0)
2c4104f0
LP		 1887 goto finish;
1888
1889 if (de->d_name[0] == 'S') {
1890 if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
1891 goto finish;
1892
1893 if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
1894 goto finish;
23a177ef
LP		 1895
1896 } else if (de->d_name[0] == 'K' &&
1897 (streq(rcnd_table[i+1], SPECIAL_RUNLEVEL0_TARGET) ||
1898 streq(rcnd_table[i+1], SPECIAL_RUNLEVEL6_TARGET))) {
1899
1900 /* We honour K links only for
1901 * halt/reboot. For the normal
1902 * runlevels we assume the
1903 * stop jobs will be
1904 * implicitly added by the
1905 * core logic. */
1906
2c4104f0
LP		 1907 if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
1908 goto finish;
1909
1910 if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
1911 goto finish;
1912 }
1913 }
1914 }
1915
1916 r = 0;
1917
1918finish:
1919 free(path);
1920 free(fpath);
1921 free(name);
1922 closedir(d);
1923
1924 return r;
1925}
1926
94f04347
LP		 1927static const char* const service_state_table[_SERVICE_STATE_MAX] = {
1928 [SERVICE_DEAD] = "dead",
1929 [SERVICE_START_PRE] = "start-pre",
1930 [SERVICE_START] = "start",
1931 [SERVICE_START_POST] = "start-post",
1932 [SERVICE_RUNNING] = "running",
1933 [SERVICE_RELOAD] = "reload",
1934 [SERVICE_STOP] = "stop",
1935 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
1936 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
1937 [SERVICE_STOP_POST] = "stop-post",
1938 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
1939 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
1940 [SERVICE_MAINTAINANCE] = "maintainance",
1941 [SERVICE_AUTO_RESTART] = "auto-restart",
1942};
1943
1944DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
1945
1946static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
1947 [SERVICE_ONCE] = "once",
1948 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
1949 [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
1950};
1951
1952DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
1953
1954static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
1955 [SERVICE_FORKING] = "forking",
1956 [SERVICE_SIMPLE] = "simple",
1957 [SERVICE_FINISH] = "finish"
1958};
1959
1960DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
1961
1962static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
1963 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
1964 [SERVICE_EXEC_START] = "ExecStart",
1965 [SERVICE_EXEC_START_POST] = "ExecStartPost",
1966 [SERVICE_EXEC_RELOAD] = "ExecReload",
1967 [SERVICE_EXEC_STOP] = "ExecStop",
1968 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
1969};
1970
1971DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
1972
87f0e418 1973const UnitVTable service_vtable = {
5cb5a6ff
LP		 1974 .suffix = ".service",
1975
034c6ed7
LP		 1976 .init = service_init,
1977 .done = service_done,
1978
5cb5a6ff
LP		 1979 .dump = service_dump,
1980
1981 .start = service_start,
1982 .stop = service_stop,
1983 .reload = service_reload,
1984
034c6ed7
LP		 1985 .can_reload = service_can_reload,
1986
5cb5a6ff
LP		 1987 .active_state = service_active_state,
1988
034c6ed7
LP		 1989 .sigchld_event = service_sigchld_event,
1990 .timer_event = service_timer_event,
2c4104f0 1991
8e274523
LP		 1992 .cgroup_notify_empty = service_cgroup_notify_event,
1993
2c4104f0 1994 .enumerate = service_enumerate
5cb5a6ff 1995};
Unnamed repository; edit this file 'description' to name the repository.