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load-fragment: make socket timeout configurable
[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
51a1a79d
LP		 160 /* If both units have modern headers we don't care
161 * about the priorities */
162 if ((!s->sysv_path || s->sysv_has_lsb) &&
163 (!t->sysv_path || t->sysv_has_lsb))
23a177ef
LP		 164 continue;
165
2c4104f0
LP		 166 if (t->sysv_start_priority < s->sysv_start_priority)
167 d = UNIT_AFTER;
168 else if (t->sysv_start_priority > s->sysv_start_priority)
169 d = UNIT_BEFORE;
170 else
171 continue;
172
173 /* FIXME: Maybe we should compare the name here lexicographically? */
174
175 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t))) < 0)
176 return r;
177 }
178
179 return 0;
180}
181
182static ExecCommand *exec_command_new(const char *path, const char *arg1) {
183 ExecCommand *c;
184
185 if (!(c = new0(ExecCommand, 1)))
186 return NULL;
187
188 if (!(c->path = strdup(path))) {
189 free(c);
190 return NULL;
191 }
192
193 if (!(c->argv = strv_new(path, arg1, NULL))) {
194 free(c->path);
195 free(c);
196 return NULL;
197 }
198
199 return c;
200}
201
202static int sysv_exec_commands(Service *s) {
203 ExecCommand *c;
204
205 assert(s);
206 assert(s->sysv_path);
207
208 if (!(c = exec_command_new(s->sysv_path, "start")))
209 return -ENOMEM;
210 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
211
212 if (!(c = exec_command_new(s->sysv_path, "stop")))
213 return -ENOMEM;
214 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
215
216 if (!(c = exec_command_new(s->sysv_path, "reload")))
217 return -ENOMEM;
218 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
219
220 return 0;
221}
222
23a177ef
LP		 223static int priority_from_rcd(Service *s, const char *init_script) {
224 char **p;
225 unsigned i;
226
061978fa 227 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvrcnd_path)
23a177ef
LP		 228 for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) {
229 char *path;
230 DIR *d;
231 struct dirent *de;
232
233 if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0)
234 return -ENOMEM;
235
236 d = opendir(path);
237 free(path);
238
239 if (!d) {
240 if (errno != ENOENT)
241 log_warning("opendir() failed on %s: %s", path, strerror(errno));
242
243 continue;
244 }
245
246 while ((de = readdir(d))) {
247 int a, b;
248
249 if (ignore_file(de->d_name))
250 continue;
251
252 if (de->d_name[0] != 'S')
253 continue;
254
255 if (strlen(de->d_name) < 4)
256 continue;
257
258 if (!streq(de->d_name + 3, init_script))
259 continue;
260
261 /* Yay, we found it! Now decode the priority */
262
263 a = undecchar(de->d_name[1]);
264 b = undecchar(de->d_name[2]);
265
266 if (a < 0 || b < 0)
267 continue;
268
269 s->sysv_start_priority = a*10 + b;
270
271 log_debug("Determined priority %i from link farm for %s", s->sysv_start_priority, unit_id(UNIT(s)));
272
273 closedir(d);
274 return 0;
275 }
276
277 closedir(d);
278 }
279
280 return 0;
281}
282
283static int service_load_sysv_path(Service *s, const char *path, UnitLoadState *new_state) {
2c4104f0
LP		 284 FILE *f;
285 Unit *u;
286 unsigned line = 0;
287 int r;
288 enum {
289 NORMAL,
290 DESCRIPTION,
291 LSB,
292 LSB_DESCRIPTION
293 } state = NORMAL;
23a177ef
LP		 294
295 assert(s);
296 assert(path);
297 assert(new_state);
2c4104f0
LP		 298
299 u = UNIT(s);
300
301 if (!(f = fopen(path, "re"))) {
302 r = errno == ENOENT ? 0 : -errno;
303 goto finish;
304 }
305
306 s->type = SERVICE_FORKING;
307 s->restart = SERVICE_ONCE;
308
309 free(s->sysv_path);
310 if (!(s->sysv_path = strdup(path))) {
311 r = -ENOMEM;
312 goto finish;
313 }
314
315 while (!feof(f)) {
316 char l[LINE_MAX], *t;
317
318 if (!fgets(l, sizeof(l), f)) {
319 if (feof(f))
320 break;
321
322 r = -errno;
323 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
324 goto finish;
325 }
326
327 line++;
328
329 t = strstrip(l);
330 if (*t != '#')
331 continue;
332
333 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
334 state = LSB;
23a177ef 335 s->sysv_has_lsb = true;
2c4104f0
LP		 336 continue;
337 }
338
339 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
340 state = NORMAL;
341 continue;
342 }
343
344 t++;
345 t += strspn(t, WHITESPACE);
346
347 if (state == NORMAL) {
348
349 /* Try to parse Red Hat style chkconfig headers */
350
351 if (startswith(t, "chkconfig:")) {
352 int start_priority;
8309400a 353 char runlevels[16], *k;
2c4104f0
LP		 354
355 state = NORMAL;
356
8309400a
LP		 357 if (sscanf(t+10, "%15s %i %*i",
358 runlevels,
359 &start_priority) != 2) {
2c4104f0
LP		 360
361 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
362 continue;
363 }
364
8309400a 365 if (start_priority < 0 || start_priority > 99)
2c4104f0 366 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
8309400a
LP		 367 else
368 s->sysv_start_priority = start_priority;
369
370 char_array_0(runlevels);
371 k = delete_chars(runlevels, WHITESPACE "-");
372
373 if (k[0]) {
374 char *d;
375
376 if (!(d = strdup(k))) {
377 r = -ENOMEM;
378 goto finish;
379 }
380
381 free(s->sysv_runlevels);
382 s->sysv_runlevels = d;
2c4104f0
LP		 383 }
384
2c4104f0
LP		 385
386 } else if (startswith(t, "description:")) {
387
388 size_t k = strlen(t);
389 char *d;
390
391 if (t[k-1] == '\\') {
392 state = DESCRIPTION;
393 t[k-1] = 0;
394 }
395
396 if (!(d = strdup(strstrip(t+12)))) {
397 r = -ENOMEM;
398 goto finish;
399 }
400
401 free(u->meta.description);
402 u->meta.description = d;
403
404 } else if (startswith(t, "pidfile:")) {
405
406 char *fn;
407
408 state = NORMAL;
409
410 fn = strstrip(t+8);
411 if (!path_is_absolute(fn)) {
412 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
413 continue;
414 }
415
416 if (!(fn = strdup(fn))) {
417 r = -ENOMEM;
418 goto finish;
419 }
420
421 free(s->pid_file);
422 s->pid_file = fn;
423 }
424
425 } else if (state == DESCRIPTION) {
426
427 /* Try to parse Red Hat style description
428 * continuation */
429
430 size_t k = strlen(t);
431 char *d;
432
433 if (t[k-1] == '\\')
434 t[k-1] = 0;
435 else
436 state = NORMAL;
437
438 assert(u->meta.description);
439 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
440 r = -ENOMEM;
441 goto finish;
442 }
443
444 free(u->meta.description);
445 u->meta.description = d;
446
447 } else if (state == LSB || state == LSB_DESCRIPTION) {
448
449 if (startswith(t, "Provides:")) {
450 char *i, *w;
451 size_t z;
452
453 state = LSB;
454
455 FOREACH_WORD(w, z, t+9, i) {
456 char *n, *m;
457
458 if (!(n = strndup(w, z))) {
459 r = -ENOMEM;
460 goto finish;
461 }
462
463 r = sysv_translate_name(n, &m);
464 free(n);
465
466 if (r < 0)
467 goto finish;
468
469 if (r == 0)
470 continue;
471
bd77d0fc
LP		 472 if (unit_name_to_type(m) == UNIT_SERVICE)
473 r = unit_add_name(u, m);
474 else {
475 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m)) >= 0)
476 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m);
477 }
478
2c4104f0
LP		 479 free(m);
480
481 if (r < 0)
482 goto finish;
483 }
484
485 } else if (startswith(t, "Required-Start:") ||
486 startswith(t, "Should-Start:")) {
487 char *i, *w;
488 size_t z;
489
490 state = LSB;
491
492 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
493 char *n, *m;
494
495 if (!(n = strndup(w, z))) {
496 r = -ENOMEM;
497 goto finish;
498 }
499
500 r = sysv_translate_name(n, &m);
501 free(n);
502
503 if (r < 0)
504 goto finish;
505
506 if (r == 0)
507 continue;
508
fc22fc6e 509 r = unit_add_dependency_by_name(u, UNIT_AFTER, m);
2c4104f0
LP		 510 free(m);
511
512 if (r < 0)
513 goto finish;
514 }
8309400a
LP		 515 } else if (startswith(t, "Default-Start:")) {
516 char *k, *d;
517
518 state = LSB;
519
520 k = delete_chars(t+14, WHITESPACE "-");
521
522 if (k[0] != 0) {
523 if (!(d = strdup(k))) {
524 r = -ENOMEM;
525 goto finish;
526 }
527
528 free(s->sysv_runlevels);
529 s->sysv_runlevels = d;
530 }
2c4104f0
LP		 531
532 } else if (startswith(t, "Description:")) {
533 char *d;
534
535 state = LSB_DESCRIPTION;
536
537 if (!(d = strdup(strstrip(t+12)))) {
538 r = -ENOMEM;
539 goto finish;
540 }
541
542 free(u->meta.description);
543 u->meta.description = d;
544
8309400a
LP		 545 } else if (startswith(t, "Short-Description:") &&
546 !u->meta.description) {
2c4104f0
LP		 547 char *d;
548
549 /* We use the short description only
550 * if no long description is set. */
551
552 state = LSB;
553
554 if (!(d = strdup(strstrip(t+18)))) {
555 r = -ENOMEM;
556 goto finish;
557 }
558
2c4104f0
LP		 559 u->meta.description = d;
560
561 } else if (state == LSB_DESCRIPTION) {
562
563 if (startswith(l, "#\t") || startswith(l, "# ")) {
564 char *d;
565
566 assert(u->meta.description);
567 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
568 r = -ENOMEM;
569 goto finish;
570 }
571
572 free(u->meta.description);
573 u->meta.description = d;
574 } else
575 state = LSB;
576 }
577 }
578 }
579
23a177ef
LP		 580 /* If init scripts have no LSB header, then we enforce the
581 * ordering via the chkconfig priorities. We try to determine
582 * a priority for *all* init scripts here, since they are
583 * needed as soon as at least one non-LSB script is used. */
2c4104f0 584
23a177ef
LP		 585 if (s->sysv_start_priority < 0) {
586 log_debug("%s has no chkconfig header, trying to determine SysV priority from link farm.", unit_id(u));
587
588 if ((r = priority_from_rcd(s, file_name_from_path(path))) < 0)
2c4104f0
LP		 589 goto finish;
590
23a177ef
LP		 591 if (s->sysv_start_priority < 0)
592 log_warning("%s has neither a chkconfig header nor a directory link, cannot order unit!", unit_id(u));
593 }
594
2c4104f0
LP		 595 if ((r = sysv_exec_commands(s)) < 0)
596 goto finish;
597
0bc824be
LP		 598 if (!s->sysv_runlevels || chars_intersect("12345", s->sysv_runlevels)) {
599 /* If there a runlevels configured for this service
600 * but none of the standard ones, then we assume this
601 * is some special kind of service (which might be
602 * needed for early boot) and don't create any links
603 * to it. */
604
605 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET)) < 0 ||
606 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET)) < 0)
607 goto finish;
608 }
0fd030be 609
23a177ef
LP		 610 *new_state = UNIT_LOADED;
611 r = 0;
2c4104f0
LP		 612
613finish:
614
615 if (f)
616 fclose(f);
617
618 return r;
619}
620
23a177ef 621static int service_load_sysv_name(Service *s, const char *name, UnitLoadState *new_state) {
2c4104f0
LP		 622 char **p;
623
624 assert(s);
625 assert(name);
626
627 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
628 char *path;
629 int r;
630
631 if (asprintf(&path, "%s/%s", *p, name) < 0)
632 return -ENOMEM;
633
634 assert(endswith(path, ".service"));
635 path[strlen(path)-8] = 0;
636
23a177ef 637 r = service_load_sysv_path(s, path, new_state);
2c4104f0
LP		 638 free(path);
639
23a177ef 640 if (r < 0)
2c4104f0 641 return r;
23a177ef
LP		 642
643 if (*new_state != UNIT_STUB)
644 break;
2c4104f0
LP		 645 }
646
647 return 0;
648}
649
23a177ef 650static int service_load_sysv(Service *s, UnitLoadState *new_state) {
2c4104f0
LP		 651 const char *t;
652 Iterator i;
653 int r;
654
5cb5a6ff 655 assert(s);
23a177ef 656 assert(new_state);
5cb5a6ff
LP		 657
658 /* Load service data from SysV init scripts, preferably with
659 * LSB headers ... */
660
2c4104f0
LP		 661 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
662 return 0;
663
664 if ((t = unit_id(UNIT(s))))
23a177ef 665 if ((r = service_load_sysv_name(s, t, new_state)) < 0)
2c4104f0
LP		 666 return r;
667
23a177ef
LP		 668 if (*new_state == UNIT_STUB)
669 SET_FOREACH(t, UNIT(s)->meta.names, i) {
670 if ((r == service_load_sysv_name(s, t, new_state)) < 0)
671 return r;
672
673 if (*new_state != UNIT_STUB)
674 break;
675 }
2c4104f0
LP		 676
677 return 0;
5cb5a6ff
LP		 678}
679
23a177ef 680static int service_init(Unit *u, UnitLoadState *new_state) {
5cb5a6ff 681 int r;
87f0e418 682 Service *s = SERVICE(u);
5cb5a6ff
LP		 683
684 assert(s);
23a177ef
LP		 685 assert(new_state);
686 assert(*new_state == UNIT_STUB);
5cb5a6ff 687
034c6ed7
LP		 688 /* First, reset everything to the defaults, in case this is a
689 * reload */
690
691 s->type = 0;
692 s->restart = 0;
693
694 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
695 s->restart_usec = DEFAULT_RESTART_USEC;
696
697 exec_context_init(&s->exec_context);
698
acbb0225 699 s->timer_watch.type = WATCH_INVALID;
034c6ed7
LP		 700
701 s->state = SERVICE_DEAD;
5cb5a6ff 702
2c4104f0 703 s->sysv_start_priority = -1;
81a2b7ce
LP		 704 s->permissions_start_only = false;
705 s->root_directory_start_only = false;
50159e6a
LP		 706 s->valid_no_process = false;
707 s->kill_mode = 0;
23a177ef 708 s->sysv_has_lsb = false;
50159e6a
LP		 709 s->main_pid = s->control_pid = 0;
710 s->main_pid_known = false;
711 s->failure = false;
23a177ef 712
1e2e8133
LP		 713 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
714
5cb5a6ff 715 /* Load a .service file */
23a177ef 716 if ((r = unit_load_fragment(u, new_state)) < 0)
5cb5a6ff
LP		 717 return r;
718
bd77d0fc 719 /* Load a classic init script as a fallback, if we couldn't find anything */
23a177ef
LP		 720 if (*new_state == UNIT_STUB)
721 if ((r = service_load_sysv(s, new_state)) < 0)
722 return r;
d46de8a1 723
23a177ef
LP		 724 /* Still nothing found? Then let's give up */
725 if (*new_state == UNIT_STUB)
726 return -ENOENT;
034c6ed7 727
23a177ef
LP		 728 /* We were able to load something, then let's add in the
729 * dropin directories. */
730 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 731 return r;
23a177ef
LP		 732
733 /* This is a new unit? Then let's add in some extras */
734 if (*new_state == UNIT_LOADED) {
735 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
736 return r;
737
738 if ((r = unit_add_default_cgroup(u)) < 0)
739 return r;
740
741 if ((r = sysv_chkconfig_order(s)) < 0)
742 return r;
8e274523
LP		 743 }
744
44d8db9e 745 return 0;
034c6ed7
LP		 746}
747
87f0e418 748static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 749
5cb5a6ff 750 ServiceExecCommand c;
87f0e418 751 Service *s = SERVICE(u);
47be870b
LP		 752 const char *prefix2;
753 char *p2;
5cb5a6ff
LP		 754
755 assert(s);
756
47be870b
LP		 757 p2 = strappend(prefix, "\t");
758 prefix2 = p2 ? p2 : prefix;
44d8db9e 759
5cb5a6ff 760 fprintf(f,
81a2b7ce
LP		 761 "%sService State: %s\n"
762 "%sPermissionsStartOnly: %s\n"
8e274523 763 "%sRootDirectoryStartOnly: %s\n"
03d6ab85 764 "%sValidNoProcess: %s\n"
50159e6a 765 "%sKillMode: %s\n"
03d6ab85 766 "%sType: %s\n",
81a2b7ce
LP		 767 prefix, service_state_to_string(s->state),
768 prefix, yes_no(s->permissions_start_only),
8e274523 769 prefix, yes_no(s->root_directory_start_only),
03d6ab85 770 prefix, yes_no(s->valid_no_process),
50159e6a 771 prefix, kill_mode_to_string(s->kill_mode),
03d6ab85 772 prefix, service_type_to_string(s->type));
5cb5a6ff 773
70123e68
LP		 774 if (s->control_pid > 0)
775 fprintf(f,
776 "%sControl PID: %llu\n",
777 prefix, (unsigned long long) s->control_pid);
778
779 if (s->main_pid > 0)
780 fprintf(f,
781 "%sMain PID: %llu\n",
782 prefix, (unsigned long long) s->main_pid);
783
034c6ed7
LP		 784 if (s->pid_file)
785 fprintf(f,
786 "%sPIDFile: %s\n",
787 prefix, s->pid_file);
788
5cb5a6ff
LP		 789 exec_context_dump(&s->exec_context, f, prefix);
790
791 for (c = 0; c < _SERVICE_EXEC_MAX; c++) {
5cb5a6ff 792
44d8db9e
LP		 793 if (!s->exec_command[c])
794 continue;
795
796 fprintf(f, "%s→ %s:\n",
94f04347 797 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 798
799 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 800 }
44d8db9e 801
2c4104f0
LP		 802 if (s->sysv_path)
803 fprintf(f,
23a177ef
LP		 804 "%sSysV Init Script Path: %s\n"
805 "%sSysV Init Script has LSB Header: %s\n",
806 prefix, s->sysv_path,
807 prefix, yes_no(s->sysv_has_lsb));
2c4104f0
LP		 808
809 if (s->sysv_start_priority >= 0)
810 fprintf(f,
23a177ef 811 "%sSysVStartPriority: %i\n",
2c4104f0
LP		 812 prefix, s->sysv_start_priority);
813
8309400a
LP		 814 if (s->sysv_runlevels)
815 fprintf(f, "%sSysVRunLevels: %s\n",
816 prefix, s->sysv_runlevels);
23a177ef 817
47be870b 818 free(p2);
5cb5a6ff
LP		 819}
820
034c6ed7
LP		 821static int service_load_pid_file(Service *s) {
822 char *k;
823 unsigned long p;
824 int r;
825
826 assert(s);
827
828 if (s->main_pid_known)
829 return 0;
830
831 if (!s->pid_file)
832 return -ENOENT;
833
834 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
835 return r;
836
837 if ((r = safe_atolu(k, &p)) < 0) {
838 free(k);
839 return r;
840 }
841
842 if ((unsigned long) (pid_t) p != p)
843 return -ERANGE;
844
b8c597d5
LP		 845 if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
846 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
847 (unsigned long long) p, s->pid_file);
848 return -ESRCH;
849 }
850
16f6025e
LP		 851 if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
852 /* FIXME: we need to do something here */
853 return r;
854
b8c597d5 855 s->main_pid = (pid_t) p;
034c6ed7
LP		 856 s->main_pid_known = true;
857
858 return 0;
859}
860
3e33402a
LP		 861static int service_get_sockets(Service *s, Set **_set) {
862 Set *set;
ceee3d82
LP		 863 Iterator i;
864 char *t;
3e33402a 865 int r;
ceee3d82
LP		 866
867 assert(s);
3e33402a
LP		 868 assert(_set);
869
870 /* Collects all Socket objects that belong to this
871 * service. Note that a service might have multiple sockets
872 * via multiple names. */
873
874 if (!(set = set_new(NULL, NULL)))
875 return -ENOMEM;
ceee3d82
LP		 876
877 SET_FOREACH(t, UNIT(s)->meta.names, i) {
878 char *k;
879 Unit *p;
880
881 /* Look for all socket objects that go by any of our
882 * units and collect their fds */
883
3e33402a
LP		 884 if (!(k = unit_name_change_suffix(t, ".socket"))) {
885 r = -ENOMEM;
886 goto fail;
887 }
ceee3d82
LP		 888
889 p = manager_get_unit(UNIT(s)->meta.manager, k);
890 free(k);
891
3e33402a 892 if (!p) continue;
ceee3d82 893
3e33402a
LP		 894 if ((r = set_put(set, p)) < 0)
895 goto fail;
ceee3d82
LP		 896 }
897
3e33402a
LP		 898 *_set = set;
899 return 0;
900
901fail:
902 set_free(set);
903 return r;
904}
905
906
907static int service_notify_sockets(Service *s) {
908 Iterator i;
909 Set *set;
47be870b 910 Socket *sock;
3e33402a
LP		 911 int r;
912
913 assert(s);
914
915 /* Notifies all our sockets when we die */
916
917 if ((r = service_get_sockets(s, &set)) < 0)
918 return r;
919
47be870b
LP		 920 SET_FOREACH(sock, set, i)
921 socket_notify_service_dead(sock);
3e33402a
LP		 922
923 set_free(set);
924
ceee3d82
LP		 925 return 0;
926}
927
034c6ed7
LP		 928static void service_set_state(Service *s, ServiceState state) {
929 ServiceState old_state;
5cb5a6ff
LP		 930 assert(s);
931
034c6ed7 932 old_state = s->state;
5cb5a6ff 933 s->state = state;
034c6ed7
LP		 934
935 if (state != SERVICE_START_PRE &&
936 state != SERVICE_START &&
937 state != SERVICE_START_POST &&
938 state != SERVICE_RELOAD &&
939 state != SERVICE_STOP &&
940 state != SERVICE_STOP_SIGTERM &&
941 state != SERVICE_STOP_SIGKILL &&
942 state != SERVICE_STOP_POST &&
943 state != SERVICE_FINAL_SIGTERM &&
944 state != SERVICE_FINAL_SIGKILL &&
945 state != SERVICE_AUTO_RESTART)
acbb0225 946 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 947
7d55e835
LP		 948 if (state != SERVICE_START &&
949 state != SERVICE_START_POST &&
034c6ed7
LP		 950 state != SERVICE_RUNNING &&
951 state != SERVICE_RELOAD &&
952 state != SERVICE_STOP &&
953 state != SERVICE_STOP_SIGTERM &&
954 state != SERVICE_STOP_SIGKILL)
acbb0225 955 if (s->main_pid > 0) {
87f0e418 956 unit_unwatch_pid(UNIT(s), s->main_pid);
034c6ed7
LP		 957 s->main_pid = 0;
958 }
959
960 if (state != SERVICE_START_PRE &&
961 state != SERVICE_START &&
962 state != SERVICE_START_POST &&
963 state != SERVICE_RELOAD &&
964 state != SERVICE_STOP &&
965 state != SERVICE_STOP_SIGTERM &&
966 state != SERVICE_STOP_SIGKILL &&
967 state != SERVICE_STOP_POST &&
968 state != SERVICE_FINAL_SIGTERM &&
969 state != SERVICE_FINAL_SIGKILL)
acbb0225 970 if (s->control_pid > 0) {
87f0e418 971 unit_unwatch_pid(UNIT(s), s->control_pid);
034c6ed7
LP		 972 s->control_pid = 0;
973 }
974
975 if (state != SERVICE_START_PRE &&
976 state != SERVICE_START &&
977 state != SERVICE_START_POST &&
978 state != SERVICE_RELOAD &&
979 state != SERVICE_STOP &&
980 state != SERVICE_STOP_POST)
981 s->control_command = NULL;
982
ceee3d82
LP		 983 if (state == SERVICE_DEAD ||
984 state == SERVICE_STOP ||
985 state == SERVICE_STOP_SIGTERM ||
986 state == SERVICE_STOP_SIGKILL ||
987 state == SERVICE_STOP_POST ||
988 state == SERVICE_FINAL_SIGTERM ||
989 state == SERVICE_FINAL_SIGKILL ||
990 state == SERVICE_MAINTAINANCE ||
991 state == SERVICE_AUTO_RESTART)
992 service_notify_sockets(s);
993
a90ebccc
LP		 994 if (old_state == state)
995 return;
996
94f04347 997 log_debug("%s changed %s → %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 998
999 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 1000}
1001
44d8db9e
LP		 1002static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1003 Iterator i;
1004 int r;
1005 int *rfds = NULL;
1006 unsigned rn_fds = 0;
3e33402a 1007 Set *set;
47be870b 1008 Socket *sock;
44d8db9e
LP		 1009
1010 assert(s);
1011 assert(fds);
1012 assert(n_fds);
1013
3e33402a
LP		 1014 if ((r = service_get_sockets(s, &set)) < 0)
1015 return r;
1016
47be870b 1017 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 1018 int *cfds;
1019 unsigned cn_fds;
1020
47be870b 1021 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1022 goto fail;
1023
1024 if (!cfds)
1025 continue;
1026
1027 if (!rfds) {
1028 rfds = cfds;
1029 rn_fds = cn_fds;
1030 } else {
1031 int *t;
1032
1033 if (!(t = new(int, rn_fds+cn_fds))) {
1034 free(cfds);
1035 r = -ENOMEM;
1036 goto fail;
1037 }
1038
1039 memcpy(t, rfds, rn_fds);
1040 memcpy(t+rn_fds, cfds, cn_fds);
1041 free(rfds);
1042 free(cfds);
1043
1044 rfds = t;
1045 rn_fds = rn_fds+cn_fds;
1046 }
1047 }
1048
1049 *fds = rfds;
1050 *n_fds = rn_fds;
3e33402a
LP		 1051
1052 set_free(set);
1053
44d8db9e
LP		 1054 return 0;
1055
1056fail:
3e33402a 1057 set_free(set);
44d8db9e 1058 free(rfds);
3e33402a 1059
44d8db9e
LP		 1060 return r;
1061}
1062
81a2b7ce
LP		 1063static int service_spawn(
1064 Service *s,
1065 ExecCommand *c,
1066 bool timeout,
1067 bool pass_fds,
1068 bool apply_permissions,
1069 bool apply_chroot,
1070 pid_t *_pid) {
1071
034c6ed7
LP		 1072 pid_t pid;
1073 int r;
44d8db9e
LP		 1074 int *fds = NULL;
1075 unsigned n_fds = 0;
034c6ed7
LP		 1076
1077 assert(s);
1078 assert(c);
1079 assert(_pid);
1080
44d8db9e
LP		 1081 if (pass_fds)
1082 if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
1083 goto fail;
1084
034c6ed7 1085 if (timeout) {
acbb0225 1086 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1087 goto fail;
1088 } else
acbb0225 1089 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1090
81a2b7ce
LP		 1091 if ((r = exec_spawn(c,
1092 &s->exec_context,
1093 fds, n_fds,
1094 apply_permissions,
1095 apply_chroot,
8e274523 1096 UNIT(s)->meta.cgroup_bondings,
81a2b7ce 1097 &pid)) < 0)
034c6ed7
LP		 1098 goto fail;
1099
87f0e418 1100 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1101 /* FIXME: we need to do something here */
1102 goto fail;
1103
44d8db9e 1104 free(fds);
034c6ed7
LP		 1105 *_pid = pid;
1106
5cb5a6ff 1107 return 0;
034c6ed7
LP		 1108
1109fail:
44d8db9e
LP		 1110 free(fds);
1111
034c6ed7 1112 if (timeout)
acbb0225 1113 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1114
1115 return r;
1116}
1117
1118static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1119 int r;
1120 assert(s);
1121
1122 if (!success)
1123 s->failure = true;
1124
1125 if (allow_restart &&
1126 (s->restart == SERVICE_RESTART_ALWAYS ||
1127 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1128
acbb0225 1129 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1130 goto fail;
1131
1132 service_set_state(s, SERVICE_AUTO_RESTART);
1133 } else
1134 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1135
1136 return;
1137
1138fail:
87f0e418 1139 log_warning("%s failed to run install restart timer: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1140 service_enter_dead(s, false, false);
1141}
1142
1143static void service_enter_signal(Service *s, ServiceState state, bool success);
1144
1145static void service_enter_stop_post(Service *s, bool success) {
1146 int r;
1147 assert(s);
1148
1149 if (!success)
1150 s->failure = true;
1151
d6ea93e3 1152 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]))
81a2b7ce
LP		 1153 if ((r = service_spawn(s,
1154 s->control_command,
1155 true,
1156 false,
1157 !s->permissions_start_only,
1158 !s->root_directory_start_only,
1159 &s->control_pid)) < 0)
034c6ed7
LP		 1160 goto fail;
1161
d6ea93e3
LP		 1162
1163 service_set_state(s, SERVICE_STOP_POST);
1164
1165 if (!s->control_command)
034c6ed7
LP		 1166 service_enter_dead(s, true, true);
1167
1168 return;
1169
1170fail:
87f0e418 1171 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1172 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1173}
1174
1175static void service_enter_signal(Service *s, ServiceState state, bool success) {
1176 int r;
1177 bool sent = false;
1178
1179 assert(s);
1180
1181 if (!success)
1182 s->failure = true;
1183
1184 if (s->main_pid > 0 || s->control_pid > 0) {
1185 int sig;
1186
1187 sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
1188
50159e6a 1189 if (s->kill_mode == KILL_CONTROL_GROUP) {
034c6ed7 1190
50159e6a
LP		 1191 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1192 if (r != -EAGAIN && r != -ESRCH)
1193 goto fail;
1194 } else
034c6ed7
LP		 1195 sent = true;
1196 }
1197
50159e6a
LP		 1198 if (!sent) {
1199 r = 0;
1200 if (s->main_pid > 0) {
1201 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1202 r = -errno;
1203 else
1204 sent = true;
1205 }
1206
1207 if (s->control_pid > 0) {
1208 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1209 r = -errno;
1210 else
1211 sent = true;
1212 }
1213
1214 if (r < 0)
1215 goto fail;
1216 }
d6ea93e3 1217 }
034c6ed7 1218
d6ea93e3
LP		 1219 service_set_state(s, state);
1220
1221 if (s->main_pid <= 0 && s->control_pid <= 0)
034c6ed7
LP		 1222 service_enter_dead(s, true, true);
1223
1224 return;
1225
1226fail:
87f0e418 1227 log_warning("%s failed to kill processes: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1228
1229 if (sent) {
1230 s->failure = true;
1231 service_set_state(s, state);
1232 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1233 service_enter_stop_post(s, false);
1234 else
1235 service_enter_dead(s, false, true);
1236}
1237
1238static void service_enter_stop(Service *s, bool success) {
1239 int r;
1240 assert(s);
1241
1242 if (!success)
1243 s->failure = true;
1244
d6ea93e3 1245 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP]))
81a2b7ce
LP		 1246 if ((r = service_spawn(s,
1247 s->control_command,
1248 true,
1249 false,
1250 !s->permissions_start_only,
1251 !s->root_directory_start_only,
1252 &s->control_pid)) < 0)
034c6ed7
LP		 1253 goto fail;
1254
d6ea93e3
LP		 1255 service_set_state(s, SERVICE_STOP);
1256
1257 if (!s->control_command)
034c6ed7
LP		 1258 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1259
1260 return;
1261
1262fail:
87f0e418 1263 log_warning("%s failed to run stop executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1264 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1265}
1266
1267static void service_enter_start_post(Service *s) {
1268 int r;
1269 assert(s);
1270
d6ea93e3 1271 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST]))
81a2b7ce
LP		 1272 if ((r = service_spawn(s,
1273 s->control_command,
1274 true,
1275 false,
1276 !s->permissions_start_only,
1277 !s->root_directory_start_only,
1278 &s->control_pid)) < 0)
034c6ed7
LP		 1279 goto fail;
1280
d6ea93e3
LP		 1281
1282 service_set_state(s, SERVICE_START_POST);
1283
1284 if (!s->control_command)
034c6ed7
LP		 1285 service_set_state(s, SERVICE_RUNNING);
1286
1287 return;
1288
1289fail:
87f0e418 1290 log_warning("%s failed to run start-post executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1291 service_enter_stop(s, false);
1292}
1293
1294static void service_enter_start(Service *s) {
1295 pid_t pid;
1296 int r;
1297
1298 assert(s);
1299
1300 assert(s->exec_command[SERVICE_EXEC_START]);
1301 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1302
81a2b7ce
LP		 1303 if ((r = service_spawn(s,
1304 s->exec_command[SERVICE_EXEC_START],
1305 s->type == SERVICE_FORKING,
1306 true,
1307 true,
1308 true,
1309 &pid)) < 0)
034c6ed7
LP		 1310 goto fail;
1311
d6ea93e3
LP		 1312 service_set_state(s, SERVICE_START);
1313
034c6ed7
LP		 1314 if (s->type == SERVICE_SIMPLE) {
1315 /* For simple services we immediately start
1316 * the START_POST binaries. */
1317
1318 s->main_pid = pid;
1319 s->main_pid_known = true;
1320 service_enter_start_post(s);
1321
1322 } else if (s->type == SERVICE_FORKING) {
1323
1324 /* For forking services we wait until the start
1325 * process exited. */
1326
1327 s->control_pid = pid;
1328 s->control_command = s->exec_command[SERVICE_EXEC_START];
7d55e835
LP		 1329 } else if (s->type == SERVICE_FINISH) {
1330
1331 /* For finishing services we wait until the start
1332 * process exited, too, but it is our main process. */
1333
1334 s->main_pid = pid;
1335 s->control_command = s->exec_command[SERVICE_EXEC_START];
034c6ed7
LP		 1336 } else
1337 assert_not_reached("Unknown service type");
1338
1339 return;
1340
1341fail:
87f0e418 1342 log_warning("%s failed to run start exectuable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1343 service_enter_stop(s, false);
1344}
1345
1346static void service_enter_start_pre(Service *s) {
1347 int r;
1348
1349 assert(s);
1350
d6ea93e3 1351 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]))
81a2b7ce
LP		 1352 if ((r = service_spawn(s,
1353 s->control_command,
1354 true,
1355 false,
1356 !s->permissions_start_only,
1357 !s->root_directory_start_only,
1358 &s->control_pid)) < 0)
034c6ed7
LP		 1359 goto fail;
1360
d6ea93e3
LP		 1361 service_set_state(s, SERVICE_START_PRE);
1362
1363 if (!s->control_command)
034c6ed7
LP		 1364 service_enter_start(s);
1365
1366 return;
1367
1368fail:
87f0e418 1369 log_warning("%s failed to run start-pre executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1370 service_enter_dead(s, false, true);
1371}
1372
1373static void service_enter_restart(Service *s) {
1374 int r;
1375 assert(s);
1376
87f0e418 1377 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1378 goto fail;
1379
87f0e418 1380 log_debug("%s scheduled restart job.", unit_id(UNIT(s)));
034c6ed7
LP		 1381 service_enter_dead(s, true, false);
1382 return;
1383
1384fail:
1385
87f0e418 1386 log_warning("%s failed to schedule restart job: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1387 service_enter_dead(s, false, false);
1388}
1389
1390static void service_enter_reload(Service *s) {
1391 int r;
1392
1393 assert(s);
1394
d6ea93e3 1395 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]))
81a2b7ce
LP		 1396 if ((r = service_spawn(s,
1397 s->control_command,
1398 true,
1399 false,
1400 !s->permissions_start_only,
1401 !s->root_directory_start_only,
1402 &s->control_pid)) < 0)
034c6ed7
LP		 1403 goto fail;
1404
d6ea93e3
LP		 1405 service_set_state(s, SERVICE_RELOAD);
1406
1407 if (!s->control_command)
034c6ed7
LP		 1408 service_set_state(s, SERVICE_RUNNING);
1409
1410 return;
1411
1412fail:
87f0e418 1413 log_warning("%s failed to run reload executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1414 service_enter_stop(s, false);
1415}
1416
1417static void service_run_next(Service *s, bool success) {
1418 int r;
1419
1420 assert(s);
1421 assert(s->control_command);
1422 assert(s->control_command->command_next);
1423
1424 if (!success)
1425 s->failure = true;
1426
1427 s->control_command = s->control_command->command_next;
1428
81a2b7ce
LP		 1429 if ((r = service_spawn(s,
1430 s->control_command,
1431 true,
1432 false,
1433 !s->permissions_start_only,
1434 !s->root_directory_start_only,
1435 &s->control_pid)) < 0)
034c6ed7
LP		 1436 goto fail;
1437
1438 return;
1439
1440fail:
87f0e418 1441 log_warning("%s failed to run spawn next executable: %s", unit_id(UNIT(s)), strerror(-r));
034c6ed7
LP		 1442
1443 if (s->state == SERVICE_STOP)
1444 service_enter_stop_post(s, false);
1445 else if (s->state == SERVICE_STOP_POST)
1446 service_enter_dead(s, false, true);
1447 else
1448 service_enter_stop(s, false);
5cb5a6ff
LP		 1449}
1450
87f0e418
LP		 1451static int service_start(Unit *u) {
1452 Service *s = SERVICE(u);
5cb5a6ff
LP		 1453
1454 assert(s);
1455
034c6ed7
LP		 1456 /* We cannot fulfill this request right now, try again later
1457 * please! */
1458 if (s->state == SERVICE_STOP ||
1459 s->state == SERVICE_STOP_SIGTERM ||
1460 s->state == SERVICE_STOP_SIGKILL ||
1461 s->state == SERVICE_STOP_POST ||
1462 s->state == SERVICE_FINAL_SIGTERM ||
1463 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1464 return -EAGAIN;
1465
034c6ed7
LP		 1466 /* Already on it! */
1467 if (s->state == SERVICE_START_PRE ||
1468 s->state == SERVICE_START ||
1469 s->state == SERVICE_START_POST)
1470 return 0;
1471
1472 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1473
1e2e8133
LP		 1474 /* Make sure we don't enter a busy loop of some kind. */
1475 if (!ratelimit_test(&s->ratelimit)) {
1476 log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
1477 return -EAGAIN;
1478 }
1479
034c6ed7
LP		 1480 s->failure = false;
1481 s->main_pid_known = false;
1482
1483 service_enter_start_pre(s);
1484 return 0;
5cb5a6ff
LP		 1485}
1486
87f0e418
LP		 1487static int service_stop(Unit *u) {
1488 Service *s = SERVICE(u);
5cb5a6ff
LP		 1489
1490 assert(s);
1491
034c6ed7
LP		 1492 if (s->state == SERVICE_START_PRE ||
1493 s->state == SERVICE_START ||
1494 s->state == SERVICE_START_POST ||
1495 s->state == SERVICE_RELOAD)
1496 return -EAGAIN;
1497
1498 if (s->state == SERVICE_AUTO_RESTART) {
1499 service_set_state(s, SERVICE_DEAD);
1500 return 0;
1501 }
1502
1503 assert(s->state == SERVICE_RUNNING);
5cb5a6ff 1504
034c6ed7 1505 service_enter_stop(s, true);
5cb5a6ff
LP		 1506 return 0;
1507}
1508
87f0e418
LP		 1509static int service_reload(Unit *u) {
1510 Service *s = SERVICE(u);
034c6ed7
LP		 1511
1512 assert(s);
1513
1514 assert(s->state == SERVICE_RUNNING);
1515
1516 service_enter_reload(s);
5cb5a6ff
LP		 1517 return 0;
1518}
1519
87f0e418
LP		 1520static bool service_can_reload(Unit *u) {
1521 Service *s = SERVICE(u);
034c6ed7
LP		 1522
1523 assert(s);
1524
1525 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1526}
1527
87f0e418
LP		 1528static UnitActiveState service_active_state(Unit *u) {
1529 assert(u);
5cb5a6ff 1530
acbb0225 1531 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1532}
1533
1534static int main_pid_good(Service *s) {
1535 assert(s);
1536
1537 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1538 * don't know */
1539
1540 /* If we know the pid file, then lets just check if it is
1541 * still valid */
1542 if (s->main_pid_known)
1543 return s->main_pid > 0;
1544
1545 /* We don't know the pid */
8e274523 1546 return -EAGAIN;
034c6ed7
LP		 1547}
1548
1549static bool control_pid_good(Service *s) {
1550 assert(s);
5cb5a6ff 1551
034c6ed7 1552 return s->control_pid > 0;
5cb5a6ff
LP		 1553}
1554
8e274523
LP		 1555static int cgroup_good(Service *s) {
1556 assert(s);
1557
1558 if (s->valid_no_process)
1559 return -EAGAIN;
1560
1561 return cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings);
1562}
1563
87f0e418
LP		 1564static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1565 Service *s = SERVICE(u);
034c6ed7 1566 bool success;
5cb5a6ff
LP		 1567
1568 assert(s);
034c6ed7
LP		 1569 assert(pid >= 0);
1570
bd982a8b 1571 success = code == CLD_EXITED && status == 0;
034c6ed7
LP		 1572 s->failure = s->failure || !success;
1573
1574 if (s->main_pid == pid) {
1575
1576 exec_status_fill(&s->main_exec_status, pid, code, status);
1577 s->main_pid = 0;
1578
7d55e835 1579 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
034c6ed7
LP		 1580 assert(s->exec_command[SERVICE_EXEC_START]);
1581 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1582 }
1583
50159e6a 1584 log_debug("%s: main process exited, code=%s, status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1585
1586 /* The service exited, so the service is officially
1587 * gone. */
1588
1589 switch (s->state) {
1590
1591 case SERVICE_START_POST:
1592 case SERVICE_RELOAD:
1593 case SERVICE_STOP:
1594 /* Need to wait until the operation is
1595 * done */
1596 break;
1597
7d55e835
LP		 1598 case SERVICE_START:
1599 assert(s->type == SERVICE_FINISH);
1600
1601 /* This was our main goal, so let's go on */
1602 if (success)
1603 service_enter_start_post(s);
1604 else
1605 service_enter_stop(s, false);
1606 break;
1607
034c6ed7
LP		 1608 case SERVICE_RUNNING:
1609 service_enter_stop(s, success);
1610 break;
1611
1612 case SERVICE_STOP_SIGTERM:
1613 case SERVICE_STOP_SIGKILL:
1614
1615 if (!control_pid_good(s))
1616 service_enter_stop_post(s, success);
5cb5a6ff 1617
034c6ed7
LP		 1618 /* If there is still a control process, wait for that first */
1619 break;
5cb5a6ff 1620
034c6ed7
LP		 1621 default:
1622 assert_not_reached("Uh, main process died at wrong time.");
1623 }
5cb5a6ff 1624
034c6ed7
LP		 1625 } else if (s->control_pid == pid) {
1626 assert(s->control_command);
1627
1628 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1629 s->control_pid = 0;
1630
94f04347 1631 log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
034c6ed7
LP		 1632
1633 /* If we are shutting things down anyway we
1634 * don't care about failing commands. */
1635
1636 if (s->control_command->command_next &&
b866264a 1637 (success || (s->state == SERVICE_STOP || s->state == SERVICE_STOP_POST)))
034c6ed7
LP		 1638
1639 /* There is another command to *
1640 * execute, so let's do that. */
1641
1642 service_run_next(s, success);
1643
1644 else {
1645 /* No further commands for this step, so let's
1646 * figure out what to do next */
1647
94f04347 1648 log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
bd982a8b 1649
034c6ed7
LP		 1650 switch (s->state) {
1651
1652 case SERVICE_START_PRE:
1653 if (success)
1654 service_enter_start(s);
1655 else
1656 service_enter_stop(s, false);
1657 break;
1658
1659 case SERVICE_START:
1660 assert(s->type == SERVICE_FORKING);
1661
1662 /* Let's try to load the pid
1663 * file here if we can. We
1664 * ignore the return value,
1665 * since the PID file might
1666 * actually be created by a
1667 * START_POST script */
1668
1669 if (success) {
1670 if (s->pid_file)
1671 service_load_pid_file(s);
1672
1673 service_enter_start_post(s);
1674 } else
1675 service_enter_stop(s, false);
1676
1677 break;
1678
1679 case SERVICE_START_POST:
1680 if (success && s->pid_file && !s->main_pid_known) {
1681 int r;
1682
1683 /* Hmm, let's see if we can
1684 * load the pid now after the
1685 * start-post scripts got
1686 * executed. */
1687
1688 if ((r = service_load_pid_file(s)) < 0)
87f0e418 1689 log_warning("%s: failed to load PID file %s: %s", unit_id(UNIT(s)), s->pid_file, strerror(-r));
034c6ed7
LP		 1690 }
1691
1692 /* Fall through */
1693
1694 case SERVICE_RELOAD:
1695 if (success) {
8e274523 1696 if (main_pid_good(s) != 0 && cgroup_good(s) != 0)
034c6ed7
LP		 1697 service_set_state(s, SERVICE_RUNNING);
1698 else
1699 service_enter_stop(s, true);
1700 } else
1701 service_enter_stop(s, false);
1702
1703 break;
1704
1705 case SERVICE_STOP:
1706 if (main_pid_good(s) > 0)
1707 /* Still not dead and we know the PID? Let's go hunting. */
1708 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
1709 else
1710 service_enter_stop_post(s, success);
1711 break;
1712
1713 case SERVICE_STOP_SIGTERM:
1714 case SERVICE_STOP_SIGKILL:
1715 if (main_pid_good(s) <= 0)
1716 service_enter_stop_post(s, success);
1717
1718 /* If there is still a service
1719 * process around, wait until
1720 * that one quit, too */
1721 break;
1722
1723 case SERVICE_STOP_POST:
1724 case SERVICE_FINAL_SIGTERM:
1725 case SERVICE_FINAL_SIGKILL:
1726 service_enter_dead(s, success, true);
1727 break;
1728
1729 default:
1730 assert_not_reached("Uh, control process died at wrong time.");
1731 }
1732 }
1733 } else
1734 assert_not_reached("Got SIGCHLD for unkown PID");
1735}
1736
acbb0225 1737static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 1738 Service *s = SERVICE(u);
034c6ed7
LP		 1739
1740 assert(s);
1741 assert(elapsed == 1);
1742
acbb0225 1743 assert(w == &s->timer_watch);
034c6ed7
LP		 1744
1745 switch (s->state) {
1746
1747 case SERVICE_START_PRE:
1748 case SERVICE_START:
1749 case SERVICE_START_POST:
1750 case SERVICE_RELOAD:
87f0e418 1751 log_warning("%s operation timed out. Stopping.", unit_id(u));
034c6ed7
LP		 1752 service_enter_stop(s, false);
1753 break;
1754
1755 case SERVICE_STOP:
87f0e418 1756 log_warning("%s stopping timed out. Terminating.", unit_id(u));
034c6ed7
LP		 1757 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1758 break;
1759
1760 case SERVICE_STOP_SIGTERM:
87f0e418 1761 log_warning("%s stopping timed out. Killing.", unit_id(u));
034c6ed7
LP		 1762 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
1763 break;
1764
1765 case SERVICE_STOP_SIGKILL:
1766 /* Uh, wie sent a SIGKILL and it is still not gone?
1767 * Must be something we cannot kill, so let's just be
1768 * weirded out and continue */
1769
87f0e418 1770 log_warning("%s still around after SIGKILL. Ignoring.", unit_id(u));
034c6ed7
LP		 1771 service_enter_stop_post(s, false);
1772 break;
1773
1774 case SERVICE_STOP_POST:
87f0e418 1775 log_warning("%s stopping timed out (2). Terminating.", unit_id(u));
034c6ed7
LP		 1776 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1777 break;
1778
1779 case SERVICE_FINAL_SIGTERM:
87f0e418 1780 log_warning("%s stopping timed out (2). Killing.", unit_id(u));
034c6ed7
LP		 1781 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
1782 break;
1783
1784 case SERVICE_FINAL_SIGKILL:
87f0e418 1785 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", unit_id(u));
034c6ed7
LP		 1786 service_enter_dead(s, false, true);
1787 break;
1788
1789 case SERVICE_AUTO_RESTART:
87f0e418 1790 log_debug("%s holdoff time over, scheduling restart.", unit_id(u));
034c6ed7
LP		 1791 service_enter_restart(s);
1792 break;
1793
1794 default:
1795 assert_not_reached("Timeout at wrong time.");
1796 }
5cb5a6ff
LP		 1797}
1798
8e274523
LP		 1799static void service_cgroup_notify_event(Unit *u) {
1800 Service *s = SERVICE(u);
1801
1802 assert(u);
1803
1804 log_debug("%s: cgroup is empty", unit_id(u));
1805
1806 switch (s->state) {
1807
1808 /* Waiting for SIGCHLD is usually more interesting,
1809 * because it includes return codes/signals. Which is
1810 * why we ignore the cgroup events for most cases,
1811 * except when we don't know pid which to expect the
1812 * SIGCHLD for. */
1813
1814 case SERVICE_RUNNING:
1815
1816 if (!s->valid_no_process && main_pid_good(s) <= 0)
1817 service_enter_stop(s, true);
1818
1819 break;
1820
1821 default:
1822 ;
1823 }
1824}
1825
2c4104f0 1826static int service_enumerate(Manager *m) {
2c4104f0
LP		 1827 char **p;
1828 unsigned i;
1829 DIR *d = NULL;
1830 char *path = NULL, *fpath = NULL, *name = NULL;
1831 int r;
1832
1833 assert(m);
1834
5e177ece 1835 STRV_FOREACH(p, m->sysvrcnd_path)
23a177ef 1836 for (i = 0; i < ELEMENTSOF(rcnd_table); i += 2) {
2c4104f0
LP		 1837 struct dirent *de;
1838
1839 free(path);
1840 path = NULL;
23a177ef 1841 if (asprintf(&path, "%s/%s", *p, rcnd_table[i]) < 0) {
2c4104f0
LP		 1842 r = -ENOMEM;
1843 goto finish;
1844 }
1845
1846 if (d)
1847 closedir(d);
1848
1849 if (!(d = opendir(path))) {
1850 if (errno != ENOENT)
1851 log_warning("opendir() failed on %s: %s", path, strerror(errno));
1852
1853 continue;
1854 }
1855
1856 while ((de = readdir(d))) {
1857 Unit *runlevel, *service;
1858
1859 if (ignore_file(de->d_name))
1860 continue;
1861
1862 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
1863 continue;
1864
1865 if (strlen(de->d_name) < 4)
1866 continue;
1867
1868 free(fpath);
1869 fpath = NULL;
23a177ef 1870 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i], de->d_name) < 0) {
2c4104f0
LP		 1871 r = -ENOMEM;
1872 goto finish;
1873 }
1874
1875 if (access(fpath, X_OK) < 0) {
1876
1877 if (errno != ENOENT)
1878 log_warning("access() failed on %s: %s", fpath, strerror(errno));
1879
1880 continue;
1881 }
1882
1883 free(name);
1884 name = NULL;
1885 if (asprintf(&name, "%s.service", de->d_name+3) < 0) {
1886 r = -ENOMEM;
1887 goto finish;
1888 }
1889
1890 if ((r = manager_load_unit(m, name, &service)) < 0)
1891 goto finish;
1892
23a177ef 1893 if ((r = manager_load_unit(m, rcnd_table[i+1], &runlevel)) < 0)
2c4104f0
LP		 1894 goto finish;
1895
1896 if (de->d_name[0] == 'S') {
1897 if ((r = unit_add_dependency(runlevel, UNIT_WANTS, service)) < 0)
1898 goto finish;
1899
1900 if ((r = unit_add_dependency(runlevel, UNIT_AFTER, service)) < 0)
1901 goto finish;
23a177ef
LP		 1902
1903 } else if (de->d_name[0] == 'K' &&
1904 (streq(rcnd_table[i+1], SPECIAL_RUNLEVEL0_TARGET) ||
1905 streq(rcnd_table[i+1], SPECIAL_RUNLEVEL6_TARGET))) {
1906
1907 /* We honour K links only for
1908 * halt/reboot. For the normal
1909 * runlevels we assume the
1910 * stop jobs will be
1911 * implicitly added by the
1912 * core logic. */
1913
2c4104f0
LP		 1914 if ((r = unit_add_dependency(runlevel, UNIT_CONFLICTS, service)) < 0)
1915 goto finish;
1916
1917 if ((r = unit_add_dependency(runlevel, UNIT_BEFORE, service)) < 0)
1918 goto finish;
1919 }
1920 }
1921 }
1922
1923 r = 0;
1924
1925finish:
1926 free(path);
1927 free(fpath);
1928 free(name);
1929 closedir(d);
1930
1931 return r;
1932}
1933
94f04347
LP		 1934static const char* const service_state_table[_SERVICE_STATE_MAX] = {
1935 [SERVICE_DEAD] = "dead",
1936 [SERVICE_START_PRE] = "start-pre",
1937 [SERVICE_START] = "start",
1938 [SERVICE_START_POST] = "start-post",
1939 [SERVICE_RUNNING] = "running",
1940 [SERVICE_RELOAD] = "reload",
1941 [SERVICE_STOP] = "stop",
1942 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
1943 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
1944 [SERVICE_STOP_POST] = "stop-post",
1945 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
1946 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
1947 [SERVICE_MAINTAINANCE] = "maintainance",
1948 [SERVICE_AUTO_RESTART] = "auto-restart",
1949};
1950
1951DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
1952
1953static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
1954 [SERVICE_ONCE] = "once",
1955 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
1956 [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
1957};
1958
1959DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
1960
1961static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
1962 [SERVICE_FORKING] = "forking",
1963 [SERVICE_SIMPLE] = "simple",
1964 [SERVICE_FINISH] = "finish"
1965};
1966
1967DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
1968
1969static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
1970 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
1971 [SERVICE_EXEC_START] = "ExecStart",
1972 [SERVICE_EXEC_START_POST] = "ExecStartPost",
1973 [SERVICE_EXEC_RELOAD] = "ExecReload",
1974 [SERVICE_EXEC_STOP] = "ExecStop",
1975 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
1976};
1977
1978DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
1979
87f0e418 1980const UnitVTable service_vtable = {
5cb5a6ff
LP		 1981 .suffix = ".service",
1982
034c6ed7
LP		 1983 .init = service_init,
1984 .done = service_done,
1985
5cb5a6ff
LP		 1986 .dump = service_dump,
1987
1988 .start = service_start,
1989 .stop = service_stop,
1990 .reload = service_reload,
1991
034c6ed7
LP		 1992 .can_reload = service_can_reload,
1993
5cb5a6ff
LP		 1994 .active_state = service_active_state,
1995
034c6ed7
LP		 1996 .sigchld_event = service_sigchld_event,
1997 .timer_event = service_timer_event,
2c4104f0 1998
8e274523
LP		 1999 .cgroup_notify_empty = service_cgroup_notify_event,
2000
2c4104f0 2001 .enumerate = service_enumerate
5cb5a6ff 2002};
Unnamed repository; edit this file 'description' to name the repository.