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execute: automatically record start/exit timestamps for forked processes
[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
16f6025e
LP		 848 if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
849 /* FIXME: we need to do something here */
850 return r;
851
b8c597d5 852 s->main_pid = (pid_t) p;
034c6ed7
LP		 853 s->main_pid_known = true;
854
855 return 0;
856}
857
3e33402a
LP		 858static int service_get_sockets(Service *s, Set **_set) {
859 Set *set;
ceee3d82
LP		 860 Iterator i;
861 char *t;
3e33402a 862 int r;
ceee3d82
LP		 863
864 assert(s);
3e33402a
LP		 865 assert(_set);
866
867 /* Collects all Socket objects that belong to this
868 * service. Note that a service might have multiple sockets
869 * via multiple names. */
870
871 if (!(set = set_new(NULL, NULL)))
872 return -ENOMEM;
ceee3d82
LP		 873
874 SET_FOREACH(t, UNIT(s)->meta.names, i) {
875 char *k;
876 Unit *p;
877
878 /* Look for all socket objects that go by any of our
879 * units and collect their fds */
880
3e33402a
LP		 881 if (!(k = unit_name_change_suffix(t, ".socket"))) {
882 r = -ENOMEM;
883 goto fail;
884 }
ceee3d82
LP		 885
886 p = manager_get_unit(UNIT(s)->meta.manager, k);
887 free(k);
888
3e33402a 889 if (!p) continue;
ceee3d82 890
3e33402a
LP		 891 if ((r = set_put(set, p)) < 0)
892 goto fail;
ceee3d82
LP		 893 }
894
3e33402a
LP		 895 *_set = set;
896 return 0;
897
898fail:
899 set_free(set);
900 return r;
901}
902
903
904static int service_notify_sockets(Service *s) {
905 Iterator i;
906 Set *set;
47be870b 907 Socket *sock;
3e33402a
LP		 908 int r;
909
910 assert(s);
911
912 /* Notifies all our sockets when we die */
913
914 if ((r = service_get_sockets(s, &set)) < 0)
915 return r;
916
47be870b
LP		 917 SET_FOREACH(sock, set, i)
918 socket_notify_service_dead(sock);
3e33402a
LP		 919
920 set_free(set);
921
ceee3d82
LP		 922 return 0;
923}
924
034c6ed7
LP		 925static void service_set_state(Service *s, ServiceState state) {
926 ServiceState old_state;
5cb5a6ff
LP		 927 assert(s);
928
034c6ed7 929 old_state = s->state;
5cb5a6ff 930 s->state = state;
034c6ed7
LP		 931
932 if (state != SERVICE_START_PRE &&
933 state != SERVICE_START &&
934 state != SERVICE_START_POST &&
935 state != SERVICE_RELOAD &&
936 state != SERVICE_STOP &&
937 state != SERVICE_STOP_SIGTERM &&
938 state != SERVICE_STOP_SIGKILL &&
939 state != SERVICE_STOP_POST &&
940 state != SERVICE_FINAL_SIGTERM &&
941 state != SERVICE_FINAL_SIGKILL &&
942 state != SERVICE_AUTO_RESTART)
acbb0225 943 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 944
7d55e835
LP		 945 if (state != SERVICE_START &&
946 state != SERVICE_START_POST &&
034c6ed7
LP		 947 state != SERVICE_RUNNING &&
948 state != SERVICE_RELOAD &&
949 state != SERVICE_STOP &&
950 state != SERVICE_STOP_SIGTERM &&
951 state != SERVICE_STOP_SIGKILL)
acbb0225 952 if (s->main_pid > 0) {
87f0e418 953 unit_unwatch_pid(UNIT(s), s->main_pid);
034c6ed7
LP		 954 s->main_pid = 0;
955 }
956
957 if (state != SERVICE_START_PRE &&
958 state != SERVICE_START &&
959 state != SERVICE_START_POST &&
960 state != SERVICE_RELOAD &&
961 state != SERVICE_STOP &&
962 state != SERVICE_STOP_SIGTERM &&
963 state != SERVICE_STOP_SIGKILL &&
964 state != SERVICE_STOP_POST &&
965 state != SERVICE_FINAL_SIGTERM &&
966 state != SERVICE_FINAL_SIGKILL)
acbb0225 967 if (s->control_pid > 0) {
87f0e418 968 unit_unwatch_pid(UNIT(s), s->control_pid);
034c6ed7
LP		 969 s->control_pid = 0;
970 }
971
972 if (state != SERVICE_START_PRE &&
973 state != SERVICE_START &&
974 state != SERVICE_START_POST &&
975 state != SERVICE_RELOAD &&
976 state != SERVICE_STOP &&
977 state != SERVICE_STOP_POST)
978 s->control_command = NULL;
979
ceee3d82
LP		 980 if (state == SERVICE_DEAD ||
981 state == SERVICE_STOP ||
982 state == SERVICE_STOP_SIGTERM ||
983 state == SERVICE_STOP_SIGKILL ||
984 state == SERVICE_STOP_POST ||
985 state == SERVICE_FINAL_SIGTERM ||
986 state == SERVICE_FINAL_SIGKILL ||
987 state == SERVICE_MAINTAINANCE ||
988 state == SERVICE_AUTO_RESTART)
989 service_notify_sockets(s);
990
a90ebccc
LP		 991 if (old_state == state)
992 return;
993
94f04347 994 log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 995
996 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 997}
998
44d8db9e
LP		 999static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1000 Iterator i;
1001 int r;
1002 int *rfds = NULL;
1003 unsigned rn_fds = 0;
3e33402a 1004 Set *set;
47be870b 1005 Socket *sock;
44d8db9e
LP		 1006
1007 assert(s);
1008 assert(fds);
1009 assert(n_fds);
1010
3e33402a
LP		 1011 if ((r = service_get_sockets(s, &set)) < 0)
1012 return r;
1013
47be870b 1014 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 1015 int *cfds;
1016 unsigned cn_fds;
1017
47be870b 1018 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1019 goto fail;
1020
1021 if (!cfds)
1022 continue;
1023
1024 if (!rfds) {
1025 rfds = cfds;
1026 rn_fds = cn_fds;
1027 } else {
1028 int *t;
1029
1030 if (!(t = new(int, rn_fds+cn_fds))) {
1031 free(cfds);
1032 r = -ENOMEM;
1033 goto fail;
1034 }
1035
1036 memcpy(t, rfds, rn_fds);
1037 memcpy(t+rn_fds, cfds, cn_fds);
1038 free(rfds);
1039 free(cfds);
1040
1041 rfds = t;
1042 rn_fds = rn_fds+cn_fds;
1043 }
1044 }
1045
1046 *fds = rfds;
1047 *n_fds = rn_fds;
3e33402a
LP		 1048
1049 set_free(set);
1050
44d8db9e
LP		 1051 return 0;
1052
1053fail:
3e33402a 1054 set_free(set);
44d8db9e 1055 free(rfds);
3e33402a 1056
44d8db9e
LP		 1057 return r;
1058}
1059
81a2b7ce
LP		 1060static int service_spawn(
1061 Service *s,
1062 ExecCommand *c,
1063 bool timeout,
1064 bool pass_fds,
1065 bool apply_permissions,
1066 bool apply_chroot,
1067 pid_t *_pid) {
1068
034c6ed7
LP		 1069 pid_t pid;
1070 int r;
44d8db9e
LP		 1071 int *fds = NULL;
1072 unsigned n_fds = 0;
034c6ed7
LP		 1073
1074 assert(s);
1075 assert(c);
1076 assert(_pid);
1077
44d8db9e
LP		 1078 if (pass_fds)
1079 if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
1080 goto fail;
1081
034c6ed7 1082 if (timeout) {
acbb0225 1083 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1084 goto fail;
1085 } else
acbb0225 1086 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1087
81a2b7ce
LP		 1088 if ((r = exec_spawn(c,
1089 &s->exec_context,
1090 fds, n_fds,
1091 apply_permissions,
1092 apply_chroot,
8e274523 1093 UNIT(s)->meta.cgroup_bondings,
81a2b7ce 1094 &pid)) < 0)
034c6ed7
LP		 1095 goto fail;
1096
87f0e418 1097 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1098 /* FIXME: we need to do something here */
1099 goto fail;
1100
44d8db9e 1101 free(fds);
034c6ed7
LP		 1102 *_pid = pid;
1103
5cb5a6ff 1104 return 0;
034c6ed7
LP		 1105
1106fail:
44d8db9e
LP		 1107 free(fds);
1108
034c6ed7 1109 if (timeout)
acbb0225 1110 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1111
1112 return r;
1113}
1114
1115static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1116 int r;
1117 assert(s);
1118
1119 if (!success)
1120 s->failure = true;
1121
1122 if (allow_restart &&
1123 (s->restart == SERVICE_RESTART_ALWAYS ||
1124 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1125
acbb0225 1126 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1127 goto fail;
1128
1129 service_set_state(s, SERVICE_AUTO_RESTART);
1130 } else
1131 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1132
1133 return;
1134
1135fail:
87f0e418 1136 log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1137 service_enter_dead(s, false, false);
1138}
1139
1140static void service_enter_signal(Service *s, ServiceState state, bool success);
1141
1142static void service_enter_stop_post(Service *s, bool success) {
1143 int r;
1144 assert(s);
1145
1146 if (!success)
1147 s->failure = true;
1148
d6ea93e3 1149 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
81a2b7ce
LP		 1150 if ((r = service_spawn(s,
1151 s->control_command,
1152 true,
1153 false,
1154 !s->permissions_start_only,
1155 !s->root_directory_start_only,
1156 &s->control_pid)) < 0)
034c6ed7
LP		 1157 goto fail;
1158
d6ea93e3
LP		 1159
1160 service_set_state(s, SERVICE_STOP_POST);
1161
1162 if (!s->control_command)
034c6ed7
LP		 1163 service_enter_dead(s, true, true);
1164
1165 return;
1166
1167fail:
87f0e418 1168 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1169 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1170}
1171
1172static void service_enter_signal(Service *s, ServiceState state, bool success) {
1173 int r;
1174 bool sent = false;
1175
1176 assert(s);
1177
1178 if (!success)
1179 s->failure = true;
1180
1181 if (s->main_pid > 0 || s->control_pid > 0) {
1182 int sig;
1183
1184 sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1185
50159e6a 1186 if (s->kill_mode == KILL_CONTROL_GROUP) {
034c6ed7 1187
50159e6a
LP		 1188 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1189 if (r != -EAGAIN && r != -ESRCH)
1190 goto fail;
1191 } else
034c6ed7
LP		 1192 sent = true;
1193 }
1194
50159e6a
LP		 1195 if (!sent) {
1196 r = 0;
1197 if (s->main_pid > 0) {
1198 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1199 r = -errno;
1200 else
1201 sent = true;
1202 }
1203
1204 if (s->control_pid > 0) {
1205 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1206 r = -errno;
1207 else
1208 sent = true;
1209 }
1210
1211 if (r < 0)
1212 goto fail;
1213 }
d6ea93e3 1214 }
034c6ed7 1215
d6ea93e3
LP		 1216 service_set_state(s, state);
1217
1218 if (s->main_pid <= 0 && s->control_pid <= 0)
034c6ed7
LP		 1219 service_enter_dead(s, true, true);
1220
1221 return;
1222
1223fail:
87f0e418 1224 log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1225
1226 if (sent) {
1227 s->failure = true;
1228 service_set_state(s, state);
1229 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1230 service_enter_stop_post(s, false);
1231 else
1232 service_enter_dead(s, false, true);
1233}
1234
1235static void service_enter_stop(Service *s, bool success) {
1236 int r;
1237 assert(s);
1238
1239 if (!success)
1240 s->failure = true;
1241
d6ea93e3 1242 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
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
d6ea93e3
LP		 1252 service_set_state(s, SERVICE_STOP);
1253
1254 if (!s->control_command)
034c6ed7
LP		 1255 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1256
1257 return;
1258
1259fail:
87f0e418 1260 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1261 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1262}
1263
1264static void service_enter_start_post(Service *s) {
1265 int r;
1266 assert(s);
1267
d6ea93e3 1268 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST]))
81a2b7ce
LP		 1269 if ((r = service_spawn(s,
1270 s->control_command,
1271 true,
1272 false,
1273 !s->permissions_start_only,
1274 !s->root_directory_start_only,
1275 &s->control_pid)) < 0)
034c6ed7
LP		 1276 goto fail;
1277
d6ea93e3
LP		 1278
1279 service_set_state(s, SERVICE_START_POST);
1280
1281 if (!s->control_command)
034c6ed7
LP		 1282 service_set_state(s, SERVICE_RUNNING);
1283
1284 return;
1285
1286fail:
87f0e418 1287 log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1288 service_enter_stop(s, false);
1289}
1290
1291static void service_enter_start(Service *s) {
1292 pid_t pid;
1293 int r;
1294
1295 assert(s);
1296
1297 assert(s->exec_command[SERVICE_EXEC_START]);
1298 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1299
81a2b7ce
LP		 1300 if ((r = service_spawn(s,
1301 s->exec_command[SERVICE_EXEC_START],
1302 s->type == SERVICE_FORKING,
1303 true,
1304 true,
1305 true,
1306 &pid)) < 0)
034c6ed7
LP		 1307 goto fail;
1308
d6ea93e3
LP		 1309 service_set_state(s, SERVICE_START);
1310
034c6ed7
LP		 1311 if (s->type == SERVICE_SIMPLE) {
1312 /* For simple services we immediately start
1313 * the START_POST binaries. */
1314
1315 s->main_pid = pid;
1316 s->main_pid_known = true;
1317 service_enter_start_post(s);
1318
1319 } else if (s->type == SERVICE_FORKING) {
1320
1321 /* For forking services we wait until the start
1322 * process exited. */
1323
1324 s->control_pid = pid;
1325 s->control_command = s->exec_command[SERVICE_EXEC_START];
7d55e835
LP		 1326 } else if (s->type == SERVICE_FINISH) {
1327
1328 /* For finishing services we wait until the start
1329 * process exited, too, but it is our main process. */
1330
1331 s->main_pid = pid;
1332 s->control_command = s->exec_command[SERVICE_EXEC_START];
034c6ed7
LP		 1333 } else
1334 assert_not_reached("Unknown service type");
1335
1336 return;
1337
1338fail:
87f0e418 1339 log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1340 service_enter_stop(s, false);
1341}
1342
1343static void service_enter_start_pre(Service *s) {
1344 int r;
1345
1346 assert(s);
1347
d6ea93e3 1348 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
81a2b7ce
LP		 1349 if ((r = service_spawn(s,
1350 s->control_command,
1351 true,
1352 false,
1353 !s->permissions_start_only,
1354 !s->root_directory_start_only,
1355 &s->control_pid)) < 0)
034c6ed7
LP		 1356 goto fail;
1357
d6ea93e3
LP		 1358 service_set_state(s, SERVICE_START_PRE);
1359
1360 if (!s->control_command)
034c6ed7
LP		 1361 service_enter_start(s);
1362
1363 return;
1364
1365fail:
87f0e418 1366 log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1367 service_enter_dead(s, false, true);
1368}
1369
1370static void service_enter_restart(Service *s) {
1371 int r;
1372 assert(s);
1373
87f0e418 1374 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1375 goto fail;
1376
87f0e418 1377 log_debug("%s scheduled restart job.", unit_id(UNIT(s)));
034c6ed7
LP		 1378 service_enter_dead(s, true, false);
1379 return;
1380
1381fail:
1382
87f0e418 1383 log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1384 service_enter_dead(s, false, false);
1385}
1386
1387static void service_enter_reload(Service *s) {
1388 int r;
1389
1390 assert(s);
1391
d6ea93e3 1392 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
81a2b7ce
LP		 1393 if ((r = service_spawn(s,
1394 s->control_command,
1395 true,
1396 false,
1397 !s->permissions_start_only,
1398 !s->root_directory_start_only,
1399 &s->control_pid)) < 0)
034c6ed7
LP		 1400 goto fail;
1401
d6ea93e3
LP		 1402 service_set_state(s, SERVICE_RELOAD);
1403
1404 if (!s->control_command)
034c6ed7
LP		 1405 service_set_state(s, SERVICE_RUNNING);
1406
1407 return;
1408
1409fail:
87f0e418 1410 log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1411 service_enter_stop(s, false);
1412}
1413
1414static void service_run_next(Service *s, bool success) {
1415 int r;
1416
1417 assert(s);
1418 assert(s->control_command);
1419 assert(s->control_command->command_next);
1420
1421 if (!success)
1422 s->failure = true;
1423
1424 s->control_command = s->control_command->command_next;
1425
81a2b7ce
LP		 1426 if ((r = service_spawn(s,
1427 s->control_command,
1428 true,
1429 false,
1430 !s->permissions_start_only,
1431 !s->root_directory_start_only,
1432 &s->control_pid)) < 0)
034c6ed7
LP		 1433 goto fail;
1434
1435 return;
1436
1437fail:
87f0e418 1438 log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1439
1440 if (s->state == SERVICE_STOP)
1441 service_enter_stop_post(s, false);
1442 else if (s->state == SERVICE_STOP_POST)
1443 service_enter_dead(s, false, true);
1444 else
1445 service_enter_stop(s, false);
5cb5a6ff
LP		 1446}
1447
87f0e418
LP		 1448static int service_start(Unit *u) {
1449 Service *s = SERVICE(u);
5cb5a6ff
LP		 1450
1451 assert(s);
1452
034c6ed7
LP		 1453 /* We cannot fulfill this request right now, try again later
1454 * please! */
1455 if (s->state == SERVICE_STOP ||
1456 s->state == SERVICE_STOP_SIGTERM ||
1457 s->state == SERVICE_STOP_SIGKILL ||
1458 s->state == SERVICE_STOP_POST ||
1459 s->state == SERVICE_FINAL_SIGTERM ||
1460 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1461 return -EAGAIN;
1462
034c6ed7
LP		 1463 /* Already on it! */
1464 if (s->state == SERVICE_START_PRE ||
1465 s->state == SERVICE_START ||
1466 s->state == SERVICE_START_POST)
1467 return 0;
1468
1469 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1470
1e2e8133
LP		 1471 /* Make sure we don't enter a busy loop of some kind. */
1472 if (!ratelimit_test(&s->ratelimit)) {
1473 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
1474 return -EAGAIN;
1475 }
1476
034c6ed7
LP		 1477 s->failure = false;
1478 s->main_pid_known = false;
1479
1480 service_enter_start_pre(s);
1481 return 0;
5cb5a6ff
LP		 1482}
1483
87f0e418
LP		 1484static int service_stop(Unit *u) {
1485 Service *s = SERVICE(u);
5cb5a6ff
LP		 1486
1487 assert(s);
1488
034c6ed7
LP		 1489 if (s->state == SERVICE_START_PRE ||
1490 s->state == SERVICE_START ||
1491 s->state == SERVICE_START_POST ||
1492 s->state == SERVICE_RELOAD)
1493 return -EAGAIN;
1494
1495 if (s->state == SERVICE_AUTO_RESTART) {
1496 service_set_state(s, SERVICE_DEAD);
1497 return 0;
1498 }
1499
1500 assert(s->state == SERVICE_RUNNING);
5cb5a6ff 1501
034c6ed7 1502 service_enter_stop(s, true);
5cb5a6ff
LP		 1503 return 0;
1504}
1505
87f0e418
LP		 1506static int service_reload(Unit *u) {
1507 Service *s = SERVICE(u);
034c6ed7
LP		 1508
1509 assert(s);
1510
1511 assert(s->state == SERVICE_RUNNING);
1512
1513 service_enter_reload(s);
5cb5a6ff
LP		 1514 return 0;
1515}
1516
87f0e418
LP		 1517static bool service_can_reload(Unit *u) {
1518 Service *s = SERVICE(u);
034c6ed7
LP		 1519
1520 assert(s);
1521
1522 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1523}
1524
87f0e418
LP		 1525static UnitActiveState service_active_state(Unit *u) {
1526 assert(u);
5cb5a6ff 1527
acbb0225 1528 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1529}
1530
1531static int main_pid_good(Service *s) {
1532 assert(s);
1533
1534 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1535 * don't know */
1536
1537 /* If we know the pid file, then lets just check if it is
1538 * still valid */
1539 if (s->main_pid_known)
1540 return s->main_pid > 0;
1541
1542 /* We don't know the pid */
8e274523 1543 return -EAGAIN;
034c6ed7
LP		 1544}
1545
1546static bool control_pid_good(Service *s) {
1547 assert(s);
5cb5a6ff 1548
034c6ed7 1549 return s->control_pid > 0;
5cb5a6ff
LP		 1550}
1551
8e274523
LP		 1552static int cgroup_good(Service *s) {
1553 assert(s);
1554
1555 if (s->valid_no_process)
1556 return -EAGAIN;
1557
1558 return cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings);
1559}
1560
87f0e418
LP		 1561static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1562 Service *s = SERVICE(u);
034c6ed7 1563 bool success;
5cb5a6ff
LP		 1564
1565 assert(s);
034c6ed7
LP		 1566 assert(pid >= 0);
1567
bd982a8b 1568 success = code == CLD_EXITED && status == 0;
034c6ed7
LP		 1569 s->failure = s->failure || !success;
1570
1571 if (s->main_pid == pid) {
1572
1573 exec_status_fill(&s->main_exec_status, pid, code, status);
1574 s->main_pid = 0;
1575
7d55e835 1576 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
034c6ed7
LP		 1577 assert(s->exec_command[SERVICE_EXEC_START]);
1578 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1579 }
1580
50159e6a 1581 log_debug("%s: main process exited, code=%s, status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1582
1583 /* The service exited, so the service is officially
1584 * gone. */
1585
1586 switch (s->state) {
1587
1588 case SERVICE_START_POST:
1589 case SERVICE_RELOAD:
1590 case SERVICE_STOP:
1591 /* Need to wait until the operation is
1592 * done */
1593 break;
1594
7d55e835
LP		 1595 case SERVICE_START:
1596 assert(s->type == SERVICE_FINISH);
1597
1598 /* This was our main goal, so let's go on */
1599 if (success)
1600 service_enter_start_post(s);
1601 else
1602 service_enter_stop(s, false);
1603 break;
1604
034c6ed7
LP		 1605 case SERVICE_RUNNING:
1606 service_enter_stop(s, success);
1607 break;
1608
1609 case SERVICE_STOP_SIGTERM:
1610 case SERVICE_STOP_SIGKILL:
1611
1612 if (!control_pid_good(s))
1613 service_enter_stop_post(s, success);
5cb5a6ff 1614
034c6ed7
LP		 1615 /* If there is still a control process, wait for that first */
1616 break;
5cb5a6ff 1617
034c6ed7
LP		 1618 default:
1619 assert_not_reached("Uh, main process died at wrong time.");
1620 }
5cb5a6ff 1621
034c6ed7
LP		 1622 } else if (s->control_pid == pid) {
1623 assert(s->control_command);
1624
1625 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1626 s->control_pid = 0;
1627
94f04347 1628 log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1629
1630 /* If we are shutting things down anyway we
1631 * don't care about failing commands. */
1632
1633 if (s->control_command->command_next &&
b866264a 1634 (success || (s->state == SERVICE_STOP || s->state == SERVICE_STOP_POST)))
034c6ed7
LP		 1635
1636 /* There is another command to *
1637 * execute, so let's do that. */
1638
1639 service_run_next(s, success);
1640
1641 else {
1642 /* No further commands for this step, so let's
1643 * figure out what to do next */
1644
94f04347 1645 log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
bd982a8b 1646
034c6ed7
LP		 1647 switch (s->state) {
1648
1649 case SERVICE_START_PRE:
1650 if (success)
1651 service_enter_start(s);
1652 else
1653 service_enter_stop(s, false);
1654 break;
1655
1656 case SERVICE_START:
1657 assert(s->type == SERVICE_FORKING);
1658
1659 /* Let's try to load the pid
1660 * file here if we can. We
1661 * ignore the return value,
1662 * since the PID file might
1663 * actually be created by a
1664 * START_POST script */
1665
1666 if (success) {
1667 if (s->pid_file)
1668 service_load_pid_file(s);
1669
1670 service_enter_start_post(s);
1671 } else
1672 service_enter_stop(s, false);
1673
1674 break;
1675
1676 case SERVICE_START_POST:
1677 if (success && s->pid_file && !s->main_pid_known) {
1678 int r;
1679
1680 /* Hmm, let's see if we can
1681 * load the pid now after the
1682 * start-post scripts got
1683 * executed. */
1684
1685 if ((r = service_load_pid_file(s)) < 0)
87f0e418 1686 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
034c6ed7
LP		 1687 }
1688
1689 /* Fall through */
1690
1691 case SERVICE_RELOAD:
1692 if (success) {
8e274523 1693 if (main_pid_good(s) != 0 && cgroup_good(s) != 0)
034c6ed7
LP		 1694 service_set_state(s, SERVICE_RUNNING);
1695 else
1696 service_enter_stop(s, true);
1697 } else
1698 service_enter_stop(s, false);
1699
1700 break;
1701
1702 case SERVICE_STOP:
1703 if (main_pid_good(s) > 0)
1704 /* Still not dead and we know the PID? Let's go hunting. */
1705 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
1706 else
1707 service_enter_stop_post(s, success);
1708 break;
1709
1710 case SERVICE_STOP_SIGTERM:
1711 case SERVICE_STOP_SIGKILL:
1712 if (main_pid_good(s) <= 0)
1713 service_enter_stop_post(s, success);
1714
1715 /* If there is still a service
1716 * process around, wait until
1717 * that one quit, too */
1718 break;
1719
1720 case SERVICE_STOP_POST:
1721 case SERVICE_FINAL_SIGTERM:
1722 case SERVICE_FINAL_SIGKILL:
1723 service_enter_dead(s, success, true);
1724 break;
1725
1726 default:
1727 assert_not_reached("Uh, control process died at wrong time.");
1728 }
1729 }
1730 } else
1731 assert_not_reached("Got SIGCHLD for unkown PID");
1732}
1733
acbb0225 1734static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 1735 Service *s = SERVICE(u);
034c6ed7
LP		 1736
1737 assert(s);
1738 assert(elapsed == 1);
1739
acbb0225 1740 assert(w == &s->timer_watch);
034c6ed7
LP		 1741
1742 switch (s->state) {
1743
1744 case SERVICE_START_PRE:
1745 case SERVICE_START:
1746 case SERVICE_START_POST:
1747 case SERVICE_RELOAD:
87f0e418 1748 log_warning("%s operation timed out. Stopping.", unit_id(u));
034c6ed7
LP		 1749 service_enter_stop(s, false);
1750 break;
1751
1752 case SERVICE_STOP:
87f0e418 1753 log_warning("%s stopping timed out. Terminating.", unit_id(u));
034c6ed7
LP		 1754 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1755 break;
1756
1757 case SERVICE_STOP_SIGTERM:
87f0e418 1758 log_warning("%s stopping timed out. Killing.", unit_id(u));
034c6ed7
LP		 1759 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
1760 break;
1761
1762 case SERVICE_STOP_SIGKILL:
1763 /* Uh, wie sent a SIGKILL and it is still not gone?
1764 * Must be something we cannot kill, so let's just be
1765 * weirded out and continue */
1766
87f0e418 1767 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
034c6ed7
LP		 1768 service_enter_stop_post(s, false);
1769 break;
1770
1771 case SERVICE_STOP_POST:
87f0e418 1772 log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
034c6ed7
LP		 1773 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1774 break;
1775
1776 case SERVICE_FINAL_SIGTERM:
87f0e418 1777 log_warning("%s stopping timed out (2). Killing.", unit_id(u));
034c6ed7
LP		 1778 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
1779 break;
1780
1781 case SERVICE_FINAL_SIGKILL:
87f0e418 1782 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
034c6ed7
LP		 1783 service_enter_dead(s, false, true);
1784 break;
1785
1786 case SERVICE_AUTO_RESTART:
87f0e418 1787 log_debug("%s holdoff time over, scheduling restart.", unit_id(u));
034c6ed7
LP		 1788 service_enter_restart(s);
1789 break;
1790
1791 default:
1792 assert_not_reached("Timeout at wrong time.");
1793 }
5cb5a6ff
LP		 1794}
1795
8e274523
LP		 1796static void service_cgroup_notify_event(Unit *u) {
1797 Service *s = SERVICE(u);
1798
1799 assert(u);
1800
1801 log_debug("%s: cgroup is empty", unit_id(u));
1802
1803 switch (s->state) {
1804
1805 /* Waiting for SIGCHLD is usually more interesting,
1806 * because it includes return codes/signals. Which is
1807 * why we ignore the cgroup events for most cases,
1808 * except when we don't know pid which to expect the
1809 * SIGCHLD for. */
1810
1811 case SERVICE_RUNNING:
1812
1813 if (!s->valid_no_process && main_pid_good(s) <= 0)
1814 service_enter_stop(s, true);
1815
1816 break;
1817
1818 default:
1819 ;
1820 }
1821}
1822
2c4104f0 1823static int service_enumerate(Manager *m) {
2c4104f0
LP		 1824 char **p;
1825 unsigned i;
1826 DIR *d = NULL;
1827 char *path = NULL, *fpath = NULL, *name = NULL;
1828 int r;
1829
1830 assert(m);
1831
5e177ece 1832 STRV_FOREACH(p, m->sysvrcnd_path)
23a177ef 1833 for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) {
2c4104f0
LP		 1834 struct dirent *de;
1835
1836 free(path);
1837 path = NULL;
23a177ef 1838 if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0) {
2c4104f0
LP		 1839 r = -ENOMEM;
1840 goto finish;
1841 }
1842
1843 if (d)
1844 closedir(d);
1845
1846 if (!(d = opendir(path))) {
1847 if (errno != ENOENT)
1848 log_warning("opendir() failed on %s: %s", path, strerror(errno));
1849
1850 continue;
1851 }
1852
1853 while ((de = readdir(d))) {
1854 Unit *runlevel, *service;
1855
1856 if (ignore_file(de->d_name))
1857 continue;
1858
1859 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
1860 continue;
1861
1862 if (strlen(de->d_name) < 4)
1863 continue;
1864
1865 free(fpath);
1866 fpath = NULL;
23a177ef 1867 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i], de->d_name) < 0) {
2c4104f0
LP		 1868 r = -ENOMEM;
1869 goto finish;
1870 }
1871
1872 if (access(fpath, X_OK) < 0) {
1873
1874 if (errno != ENOENT)
1875 log_warning("access() failed on %s: %s", fpath, strerror(errno));
1876
1877 continue;
1878 }
1879
1880 free(name);
1881 name = NULL;
1882 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
1883 r = -ENOMEM;
1884 goto finish;
1885 }
1886
1887 if ((r = manager_load_unit(m, name, &service)) < 0)
1888 goto finish;
1889
23a177ef 1890 if ((r = manager_load_unit(m, rcnd_table[i+1], &runlevel)) < 0)
2c4104f0
LP		 1891 goto finish;
1892
1893 if (de->d_name[0] == 'S') {
1894 if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
1895 goto finish;
1896
1897 if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
1898 goto finish;
23a177ef
LP		 1899
1900 } else if (de->d_name[0] == 'K' &&
1901 (streq(rcnd_table[i+1], SPECIAL_RUNLEVEL0_TARGET) ||
1902 streq(rcnd_table[i+1], SPECIAL_RUNLEVEL6_TARGET))) {
1903
1904 /* We honour K links only for
1905 * halt/reboot. For the normal
1906 * runlevels we assume the
1907 * stop jobs will be
1908 * implicitly added by the
1909 * core logic. */
1910
2c4104f0
LP		 1911 if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
1912 goto finish;
1913
1914 if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
1915 goto finish;
1916 }
1917 }
1918 }
1919
1920 r = 0;
1921
1922finish:
1923 free(path);
1924 free(fpath);
1925 free(name);
1926 closedir(d);
1927
1928 return r;
1929}
1930
94f04347
LP		 1931static const char* const service_state_table[_SERVICE_STATE_MAX] = {
1932 [SERVICE_DEAD] = "dead",
1933 [SERVICE_START_PRE] = "start-pre",
1934 [SERVICE_START] = "start",
1935 [SERVICE_START_POST] = "start-post",
1936 [SERVICE_RUNNING] = "running",
1937 [SERVICE_RELOAD] = "reload",
1938 [SERVICE_STOP] = "stop",
1939 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
1940 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
1941 [SERVICE_STOP_POST] = "stop-post",
1942 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
1943 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
1944 [SERVICE_MAINTAINANCE] = "maintainance",
1945 [SERVICE_AUTO_RESTART] = "auto-restart",
1946};
1947
1948DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
1949
1950static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
1951 [SERVICE_ONCE] = "once",
1952 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
1953 [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
1954};
1955
1956DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
1957
1958static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
1959 [SERVICE_FORKING] = "forking",
1960 [SERVICE_SIMPLE] = "simple",
1961 [SERVICE_FINISH] = "finish"
1962};
1963
1964DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
1965
1966static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
1967 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
1968 [SERVICE_EXEC_START] = "ExecStart",
1969 [SERVICE_EXEC_START_POST] = "ExecStartPost",
1970 [SERVICE_EXEC_RELOAD] = "ExecReload",
1971 [SERVICE_EXEC_STOP] = "ExecStop",
1972 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
1973};
1974
1975DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
1976
87f0e418 1977const UnitVTable service_vtable = {
5cb5a6ff
LP		 1978 .suffix = ".service",
1979
034c6ed7
LP		 1980 .init = service_init,
1981 .done = service_done,
1982
5cb5a6ff
LP		 1983 .dump = service_dump,
1984
1985 .start = service_start,
1986 .stop = service_stop,
1987 .reload = service_reload,
1988
034c6ed7
LP		 1989 .can_reload = service_can_reload,
1990
5cb5a6ff
LP		 1991 .active_state = service_active_state,
1992
034c6ed7
LP		 1993 .sigchld_event = service_sigchld_event,
1994 .timer_event = service_timer_event,
2c4104f0 1995
8e274523
LP		 1996 .cgroup_notify_empty = service_cgroup_notify_event,
1997
2c4104f0 1998 .enumerate = service_enumerate
5cb5a6ff 1999};
Unnamed repository; edit this file 'description' to name the repository.