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[thirdparty/systemd.git] / src / service.c
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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 32#include "strv.h"
9e2f7c11 33#include "unit-name.h"
4139c1b2 34#include "dbus-service.h"
2c4104f0
LP		 35
36#define COMMENTS "#;\n"
37#define NEWLINES "\n\r"
38#define LINE_MAX 4096
034c6ed7 39
09cd1ab1
LP		 40typedef enum RunlevelType {
41 RUNLEVEL_UP,
42 RUNLEVEL_DOWN,
43 RUNLEVEL_BASIC
44} RunlevelType;
45
46static const struct {
47 const char *path;
48 const char *target;
49 const RunlevelType type;
50} rcnd_table[] = {
fbe9f3a9
LP		 51 /* Standard SysV runlevels */
52 { "rc0.d", SPECIAL_RUNLEVEL0_TARGET, RUNLEVEL_DOWN },
53 { "rc1.d", SPECIAL_RUNLEVEL1_TARGET, RUNLEVEL_UP },
54 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
55 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
56 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
57 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
58 { "rc6.d", SPECIAL_RUNLEVEL6_TARGET, RUNLEVEL_DOWN },
59
60 /* SuSE style boot.d */
61 { "boot.d", SPECIAL_BASIC_TARGET, RUNLEVEL_BASIC },
62
63 /* Debian style rcS.d */
64 { "rcS.d", SPECIAL_BASIC_TARGET, RUNLEVEL_BASIC },
23a177ef
LP		 65};
66
09cd1ab1 67#define RUNLEVELS_UP "12345"
fbe9f3a9
LP		 68/* #define RUNLEVELS_DOWN "06" */
69/* #define RUNLEVELS_BOOT "bBsS" */
09cd1ab1 70
acbb0225 71static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
87f0e418
LP		 72 [SERVICE_DEAD] = UNIT_INACTIVE,
73 [SERVICE_START_PRE] = UNIT_ACTIVATING,
74 [SERVICE_START] = UNIT_ACTIVATING,
75 [SERVICE_START_POST] = UNIT_ACTIVATING,
76 [SERVICE_RUNNING] = UNIT_ACTIVE,
80876c20 77 [SERVICE_EXITED] = UNIT_ACTIVE,
87f0e418
LP		 78 [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
79 [SERVICE_STOP] = UNIT_DEACTIVATING,
80 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
81 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
82 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
83 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
84 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
85 [SERVICE_MAINTAINANCE] = UNIT_INACTIVE,
86 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
034c6ed7 87};
5cb5a6ff 88
a16e1123
LP		 89static void service_init(Unit *u) {
90 Service *s = SERVICE(u);
91
92 assert(u);
93 assert(u->meta.load_state == UNIT_STUB);
94
95 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
96 s->restart_usec = DEFAULT_RESTART_USEC;
97 s->timer_watch.type = WATCH_INVALID;
98 s->sysv_start_priority = -1;
99 s->socket_fd = -1;
100
101 exec_context_init(&s->exec_context);
102
103 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
104
105 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
106}
107
5e94833f
LP		 108static void service_unwatch_control_pid(Service *s) {
109 assert(s);
110
111 if (s->control_pid <= 0)
112 return;
113
114 unit_unwatch_pid(UNIT(s), s->control_pid);
115 s->control_pid = 0;
116}
117
118static void service_unwatch_main_pid(Service *s) {
119 assert(s);
120
121 if (s->main_pid <= 0)
122 return;
123
124 unit_unwatch_pid(UNIT(s), s->main_pid);
125 s->main_pid = 0;
126}
127
4f2d528d
LP		 128static void service_close_socket_fd(Service *s) {
129 assert(s);
130
131 if (s->socket_fd < 0)
132 return;
133
134 close_nointr_nofail(s->socket_fd);
135 s->socket_fd = -1;
136}
137
87f0e418
LP		 138static void service_done(Unit *u) {
139 Service *s = SERVICE(u);
44d8db9e
LP		 140
141 assert(s);
142
143 free(s->pid_file);
144 s->pid_file = NULL;
145
2c4104f0
LP		 146 free(s->sysv_path);
147 s->sysv_path = NULL;
148
8309400a
LP		 149 free(s->sysv_runlevels);
150 s->sysv_runlevels = NULL;
151
44d8db9e 152 exec_context_done(&s->exec_context);
e537352b 153 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
44d8db9e
LP		 154 s->control_command = NULL;
155
156 /* This will leak a process, but at least no memory or any of
157 * our resources */
5e94833f
LP		 158 service_unwatch_main_pid(s);
159 service_unwatch_control_pid(s);
44d8db9e 160
05e343b7
LP		 161 if (s->bus_name) {
162 unit_unwatch_bus_name(UNIT(u), s->bus_name);
163 free(s->bus_name);
164 s->bus_name = NULL;
165 }
166
4f2d528d
LP		 167 service_close_socket_fd(s);
168
acbb0225 169 unit_unwatch_timer(u, &s->timer_watch);
44d8db9e
LP		 170}
171
2c4104f0
LP		 172static int sysv_translate_name(const char *name, char **_r) {
173
174 static const char * const table[] = {
175 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
176 "$network", SPECIAL_NETWORK_TARGET,
177 "$named", SPECIAL_NSS_LOOKUP_TARGET,
178 "$portmap", SPECIAL_RPCBIND_TARGET,
179 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
180 "$syslog", SPECIAL_SYSLOG_TARGET,
181 "$time", SPECIAL_RTC_SET_TARGET
182 };
183
184 unsigned i;
185 char *r;
186
187 for (i = 0; i < ELEMENTSOF(table); i += 2)
188 if (streq(table[i], name)) {
189 if (!(r = strdup(table[i+1])))
190 return -ENOMEM;
191
192 goto finish;
193 }
194
195 if (*name == '$')
196 return 0;
197
198 if (asprintf(&r, "%s.service", name) < 0)
199 return -ENOMEM;
200
201finish:
202
203 if (_r)
204 *_r = r;
205
206 return 1;
207}
208
209static int sysv_chkconfig_order(Service *s) {
210 Meta *other;
211 int r;
212
213 assert(s);
214
215 if (s->sysv_start_priority < 0)
216 return 0;
217
23a177ef
LP		 218 /* For each pair of services where at least one lacks a LSB
219 * header, we use the start priority value to order things. */
2c4104f0
LP		 220
221 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
222 Service *t;
223 UnitDependency d;
224
225 t = (Service*) other;
226
227 if (s == t)
228 continue;
229
230 if (t->sysv_start_priority < 0)
231 continue;
232
51a1a79d
LP		 233 /* If both units have modern headers we don't care
234 * about the priorities */
235 if ((!s->sysv_path || s->sysv_has_lsb) &&
236 (!t->sysv_path || t->sysv_has_lsb))
23a177ef
LP		 237 continue;
238
2c4104f0
LP		 239 if (t->sysv_start_priority < s->sysv_start_priority)
240 d = UNIT_AFTER;
241 else if (t->sysv_start_priority > s->sysv_start_priority)
242 d = UNIT_BEFORE;
243 else
244 continue;
245
246 /* FIXME: Maybe we should compare the name here lexicographically? */
247
701cc384 248 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
2c4104f0
LP		 249 return r;
250 }
251
252 return 0;
253}
254
255static ExecCommand *exec_command_new(const char *path, const char *arg1) {
256 ExecCommand *c;
257
258 if (!(c = new0(ExecCommand, 1)))
259 return NULL;
260
261 if (!(c->path = strdup(path))) {
262 free(c);
263 return NULL;
264 }
265
266 if (!(c->argv = strv_new(path, arg1, NULL))) {
267 free(c->path);
268 free(c);
269 return NULL;
270 }
271
272 return c;
273}
274
275static int sysv_exec_commands(Service *s) {
276 ExecCommand *c;
277
278 assert(s);
279 assert(s->sysv_path);
280
281 if (!(c = exec_command_new(s->sysv_path, "start")))
282 return -ENOMEM;
283 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
284
285 if (!(c = exec_command_new(s->sysv_path, "stop")))
286 return -ENOMEM;
287 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
288
289 if (!(c = exec_command_new(s->sysv_path, "reload")))
290 return -ENOMEM;
291 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
292
293 return 0;
294}
295
e537352b 296static int service_load_sysv_path(Service *s, const char *path) {
2c4104f0
LP		 297 FILE *f;
298 Unit *u;
299 unsigned line = 0;
300 int r;
301 enum {
302 NORMAL,
303 DESCRIPTION,
304 LSB,
305 LSB_DESCRIPTION
306 } state = NORMAL;
23a177ef
LP		 307
308 assert(s);
309 assert(path);
2c4104f0
LP		 310
311 u = UNIT(s);
312
313 if (!(f = fopen(path, "re"))) {
314 r = errno == ENOENT ? 0 : -errno;
315 goto finish;
316 }
317
318 s->type = SERVICE_FORKING;
319 s->restart = SERVICE_ONCE;
320
321 free(s->sysv_path);
322 if (!(s->sysv_path = strdup(path))) {
323 r = -ENOMEM;
324 goto finish;
325 }
326
327 while (!feof(f)) {
328 char l[LINE_MAX], *t;
329
330 if (!fgets(l, sizeof(l), f)) {
331 if (feof(f))
332 break;
333
334 r = -errno;
335 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
336 goto finish;
337 }
338
339 line++;
340
341 t = strstrip(l);
342 if (*t != '#')
343 continue;
344
345 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
346 state = LSB;
23a177ef 347 s->sysv_has_lsb = true;
2c4104f0
LP		 348 continue;
349 }
350
351 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
352 state = NORMAL;
353 continue;
354 }
355
356 t++;
357 t += strspn(t, WHITESPACE);
358
359 if (state == NORMAL) {
360
361 /* Try to parse Red Hat style chkconfig headers */
362
363 if (startswith(t, "chkconfig:")) {
364 int start_priority;
8309400a 365 char runlevels[16], *k;
2c4104f0
LP		 366
367 state = NORMAL;
368
8309400a
LP		 369 if (sscanf(t+10, "%15s %i %*i",
370 runlevels,
371 &start_priority) != 2) {
2c4104f0
LP		 372
373 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
374 continue;
375 }
376
fbe9f3a9
LP		 377 /* A start priority gathered from the
378 * symlink farms is preferred over the
379 * data from the LSB header. */
8309400a 380 if (start_priority < 0 || start_priority > 99)
2c4104f0 381 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
db06e3b6 382 else if (s->sysv_start_priority < 0)
8309400a
LP		 383 s->sysv_start_priority = start_priority;
384
385 char_array_0(runlevels);
386 k = delete_chars(runlevels, WHITESPACE "-");
387
388 if (k[0]) {
389 char *d;
390
391 if (!(d = strdup(k))) {
392 r = -ENOMEM;
393 goto finish;
394 }
395
396 free(s->sysv_runlevels);
397 s->sysv_runlevels = d;
2c4104f0
LP		 398 }
399
2c4104f0
LP		 400 } else if (startswith(t, "description:")) {
401
402 size_t k = strlen(t);
403 char *d;
404
405 if (t[k-1] == '\\') {
406 state = DESCRIPTION;
407 t[k-1] = 0;
408 }
409
410 if (!(d = strdup(strstrip(t+12)))) {
411 r = -ENOMEM;
412 goto finish;
413 }
414
415 free(u->meta.description);
416 u->meta.description = d;
417
418 } else if (startswith(t, "pidfile:")) {
419
420 char *fn;
421
422 state = NORMAL;
423
424 fn = strstrip(t+8);
425 if (!path_is_absolute(fn)) {
426 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
427 continue;
428 }
429
430 if (!(fn = strdup(fn))) {
431 r = -ENOMEM;
432 goto finish;
433 }
434
435 free(s->pid_file);
436 s->pid_file = fn;
437 }
438
439 } else if (state == DESCRIPTION) {
440
441 /* Try to parse Red Hat style description
442 * continuation */
443
444 size_t k = strlen(t);
445 char *d;
446
447 if (t[k-1] == '\\')
448 t[k-1] = 0;
449 else
450 state = NORMAL;
451
452 assert(u->meta.description);
453 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
454 r = -ENOMEM;
455 goto finish;
456 }
457
458 free(u->meta.description);
459 u->meta.description = d;
460
461 } else if (state == LSB || state == LSB_DESCRIPTION) {
462
463 if (startswith(t, "Provides:")) {
464 char *i, *w;
465 size_t z;
466
467 state = LSB;
468
469 FOREACH_WORD(w, z, t+9, i) {
470 char *n, *m;
471
472 if (!(n = strndup(w, z))) {
473 r = -ENOMEM;
474 goto finish;
475 }
476
477 r = sysv_translate_name(n, &m);
478 free(n);
479
480 if (r < 0)
481 goto finish;
482
483 if (r == 0)
484 continue;
485
bd77d0fc
LP		 486 if (unit_name_to_type(m) == UNIT_SERVICE)
487 r = unit_add_name(u, m);
488 else {
701cc384
LP		 489 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL, true)) >= 0)
490 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
bd77d0fc
LP		 491 }
492
2c4104f0
LP		 493 free(m);
494
495 if (r < 0)
496 goto finish;
497 }
498
499 } else if (startswith(t, "Required-Start:") ||
500 startswith(t, "Should-Start:")) {
501 char *i, *w;
502 size_t z;
503
504 state = LSB;
505
506 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
507 char *n, *m;
508
509 if (!(n = strndup(w, z))) {
510 r = -ENOMEM;
511 goto finish;
512 }
513
514 r = sysv_translate_name(n, &m);
515 free(n);
516
517 if (r < 0)
518 goto finish;
519
520 if (r == 0)
521 continue;
522
701cc384 523 r = unit_add_dependency_by_name(u, UNIT_AFTER, m, NULL, true);
2c4104f0
LP		 524 free(m);
525
526 if (r < 0)
527 goto finish;
528 }
8309400a
LP		 529 } else if (startswith(t, "Default-Start:")) {
530 char *k, *d;
531
532 state = LSB;
533
534 k = delete_chars(t+14, WHITESPACE "-");
535
536 if (k[0] != 0) {
537 if (!(d = strdup(k))) {
538 r = -ENOMEM;
539 goto finish;
540 }
541
542 free(s->sysv_runlevels);
543 s->sysv_runlevels = d;
544 }
2c4104f0
LP		 545
546 } else if (startswith(t, "Description:")) {
547 char *d;
548
549 state = LSB_DESCRIPTION;
550
551 if (!(d = strdup(strstrip(t+12)))) {
552 r = -ENOMEM;
553 goto finish;
554 }
555
556 free(u->meta.description);
557 u->meta.description = d;
558
8309400a
LP		 559 } else if (startswith(t, "Short-Description:") &&
560 !u->meta.description) {
2c4104f0
LP		 561 char *d;
562
563 /* We use the short description only
564 * if no long description is set. */
565
566 state = LSB;
567
568 if (!(d = strdup(strstrip(t+18)))) {
569 r = -ENOMEM;
570 goto finish;
571 }
572
2c4104f0
LP		 573 u->meta.description = d;
574
575 } else if (state == LSB_DESCRIPTION) {
576
577 if (startswith(l, "#\t") || startswith(l, "# ")) {
578 char *d;
579
580 assert(u->meta.description);
581 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
582 r = -ENOMEM;
583 goto finish;
584 }
585
586 free(u->meta.description);
587 u->meta.description = d;
588 } else
589 state = LSB;
590 }
591 }
592 }
593
2c4104f0
LP		 594 if ((r = sysv_exec_commands(s)) < 0)
595 goto finish;
596
09cd1ab1 597 if (!s->sysv_runlevels || chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
0bc824be
LP		 598 /* If there a runlevels configured for this service
599 * but none of the standard ones, then we assume this
600 * is some special kind of service (which might be
601 * needed for early boot) and don't create any links
602 * to it. */
603
701cc384
LP		 604 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0 ||
605 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
0bc824be 606 goto finish;
09cd1ab1
LP		 607
608 } else
609 /* Don't timeout special services during boot (like fsck) */
610 s->timeout_usec = 0;
0fd030be 611
80876c20
LP		 612 /* Special setting for all SysV services */
613 s->valid_no_process = true;
b29a8e58 614 s->kill_mode = KILL_PROCESS_GROUP;
80876c20 615
e537352b 616 u->meta.load_state = UNIT_LOADED;
23a177ef 617 r = 0;
2c4104f0
LP		 618
619finish:
620
621 if (f)
622 fclose(f);
623
624 return r;
625}
626
e537352b 627static int service_load_sysv_name(Service *s, const char *name) {
2c4104f0
LP		 628 char **p;
629
630 assert(s);
631 assert(name);
632
633 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
634 char *path;
635 int r;
636
637 if (asprintf(&path, "%s/%s", *p, name) < 0)
638 return -ENOMEM;
639
640 assert(endswith(path, ".service"));
641 path[strlen(path)-8] = 0;
642
e537352b 643 r = service_load_sysv_path(s, path);
fbe9f3a9
LP		 644
645 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
646 /* Try Debian style .sh source'able init scripts */
647 strcat(path, ".sh");
648 r = service_load_sysv_path(s, path);
649 }
650
2c4104f0
LP		 651 free(path);
652
fbe9f3a9
LP		 653 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
654 /* Try Suse style boot.xxxx init scripts */
655
656 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
657 return -ENOMEM;
658
659 path[strlen(path)-8] = 0;
660 r = service_load_sysv_path(s, path);
661 free(path);
662 }
663
23a177ef 664 if (r < 0)
2c4104f0 665 return r;
23a177ef 666
e537352b 667 if ((UNIT(s)->meta.load_state != UNIT_STUB))
23a177ef 668 break;
2c4104f0
LP		 669 }
670
671 return 0;
672}
673
e537352b 674static int service_load_sysv(Service *s) {
2c4104f0
LP		 675 const char *t;
676 Iterator i;
677 int r;
678
5cb5a6ff
LP		 679 assert(s);
680
681 /* Load service data from SysV init scripts, preferably with
682 * LSB headers ... */
683
2c4104f0
LP		 684 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
685 return 0;
686
9e2f7c11 687 if ((t = UNIT(s)->meta.id))
e537352b 688 if ((r = service_load_sysv_name(s, t)) < 0)
2c4104f0
LP		 689 return r;
690
e537352b 691 if (UNIT(s)->meta.load_state == UNIT_STUB)
23a177ef 692 SET_FOREACH(t, UNIT(s)->meta.names, i) {
9e2f7c11 693 if (t == UNIT(s)->meta.id)
e537352b
LP		 694 continue;
695
696 if ((r == service_load_sysv_name(s, t)) < 0)
23a177ef
LP		 697 return r;
698
e537352b 699 if (UNIT(s)->meta.load_state != UNIT_STUB)
23a177ef
LP		 700 break;
701 }
2c4104f0
LP		 702
703 return 0;
5cb5a6ff
LP		 704}
705
05e343b7
LP		 706static int service_add_bus_name(Service *s) {
707 char *n;
708 int r;
709
710 assert(s);
711 assert(s->bus_name);
712
713 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
714 return 0;
715
716 r = unit_merge_by_name(UNIT(s), n);
717 free(n);
718
719 return r;
720}
721
243b1432
LP		 722static int service_verify(Service *s) {
723 assert(s);
724
725 if (UNIT(s)->meta.load_state != UNIT_LOADED)
726 return 0;
727
728 if (!s->exec_command[SERVICE_EXEC_START]) {
9e2f7c11 729 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
243b1432
LP		 730 return -EINVAL;
731 }
732
05e343b7
LP		 733 if (s->type == SERVICE_DBUS && !s->bus_name) {
734 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
735 return -EINVAL;
736 }
737
243b1432
LP		 738 return 0;
739}
740
e537352b
LP		 741static int service_load(Unit *u) {
742 int r;
743 Service *s = SERVICE(u);
744
745 assert(s);
1e2e8133 746
5cb5a6ff 747 /* Load a .service file */
e537352b 748 if ((r = unit_load_fragment(u)) < 0)
5cb5a6ff
LP		 749 return r;
750
bd77d0fc 751 /* Load a classic init script as a fallback, if we couldn't find anything */
e537352b
LP		 752 if (u->meta.load_state == UNIT_STUB)
753 if ((r = service_load_sysv(s)) < 0)
23a177ef 754 return r;
d46de8a1 755
23a177ef 756 /* Still nothing found? Then let's give up */
e537352b 757 if (u->meta.load_state == UNIT_STUB)
23a177ef 758 return -ENOENT;
034c6ed7 759
23a177ef
LP		 760 /* We were able to load something, then let's add in the
761 * dropin directories. */
762 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 763 return r;
23a177ef
LP		 764
765 /* This is a new unit? Then let's add in some extras */
e537352b 766 if (u->meta.load_state == UNIT_LOADED) {
23a177ef
LP		 767 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
768 return r;
769
770 if ((r = unit_add_default_cgroup(u)) < 0)
771 return r;
772
773 if ((r = sysv_chkconfig_order(s)) < 0)
774 return r;
05e343b7
LP		 775
776 if (s->bus_name) {
777 if ((r = service_add_bus_name(s)) < 0)
778 return r;
779
780 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
781 return r;
782 }
8e274523
LP		 783 }
784
243b1432 785 return service_verify(s);
034c6ed7
LP		 786}
787
87f0e418 788static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 789
5cb5a6ff 790 ServiceExecCommand c;
87f0e418 791 Service *s = SERVICE(u);
47be870b
LP		 792 const char *prefix2;
793 char *p2;
5cb5a6ff
LP		 794
795 assert(s);
796
47be870b
LP		 797 p2 = strappend(prefix, "\t");
798 prefix2 = p2 ? p2 : prefix;
44d8db9e 799
5cb5a6ff 800 fprintf(f,
81a2b7ce
LP		 801 "%sService State: %s\n"
802 "%sPermissionsStartOnly: %s\n"
8e274523 803 "%sRootDirectoryStartOnly: %s\n"
03d6ab85 804 "%sValidNoProcess: %s\n"
50159e6a 805 "%sKillMode: %s\n"
03d6ab85 806 "%sType: %s\n",
81a2b7ce
LP		 807 prefix, service_state_to_string(s->state),
808 prefix, yes_no(s->permissions_start_only),
8e274523 809 prefix, yes_no(s->root_directory_start_only),
03d6ab85 810 prefix, yes_no(s->valid_no_process),
50159e6a 811 prefix, kill_mode_to_string(s->kill_mode),
03d6ab85 812 prefix, service_type_to_string(s->type));
5cb5a6ff 813
70123e68
LP		 814 if (s->control_pid > 0)
815 fprintf(f,
816 "%sControl PID: %llu\n",
817 prefix, (unsigned long long) s->control_pid);
818
819 if (s->main_pid > 0)
820 fprintf(f,
821 "%sMain PID: %llu\n",
822 prefix, (unsigned long long) s->main_pid);
823
034c6ed7
LP		 824 if (s->pid_file)
825 fprintf(f,
826 "%sPIDFile: %s\n",
827 prefix, s->pid_file);
828
05e343b7
LP		 829 if (s->bus_name)
830 fprintf(f,
831 "%sBusName: %s\n"
832 "%sBus Name Good: %s\n",
833 prefix, s->bus_name,
834 prefix, yes_no(s->bus_name_good));
835
5cb5a6ff
LP		 836 exec_context_dump(&s->exec_context, f, prefix);
837
e537352b 838 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
5cb5a6ff 839
44d8db9e
LP		 840 if (!s->exec_command[c])
841 continue;
842
40d50879 843 fprintf(f, "%s-> %s:\n",
94f04347 844 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 845
846 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 847 }
44d8db9e 848
2c4104f0
LP		 849 if (s->sysv_path)
850 fprintf(f,
23a177ef
LP		 851 "%sSysV Init Script Path: %s\n"
852 "%sSysV Init Script has LSB Header: %s\n",
853 prefix, s->sysv_path,
854 prefix, yes_no(s->sysv_has_lsb));
2c4104f0
LP		 855
856 if (s->sysv_start_priority >= 0)
857 fprintf(f,
23a177ef 858 "%sSysVStartPriority: %i\n",
2c4104f0
LP		 859 prefix, s->sysv_start_priority);
860
8309400a
LP		 861 if (s->sysv_runlevels)
862 fprintf(f, "%sSysVRunLevels: %s\n",
863 prefix, s->sysv_runlevels);
23a177ef 864
47be870b 865 free(p2);
5cb5a6ff
LP		 866}
867
034c6ed7
LP		 868static int service_load_pid_file(Service *s) {
869 char *k;
870 unsigned long p;
871 int r;
872
873 assert(s);
874
875 if (s->main_pid_known)
876 return 0;
877
5e94833f
LP		 878 assert(s->main_pid <= 0);
879
034c6ed7
LP		 880 if (!s->pid_file)
881 return -ENOENT;
882
883 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
884 return r;
885
886 if ((r = safe_atolu(k, &p)) < 0) {
887 free(k);
888 return r;
889 }
890
891 if ((unsigned long) (pid_t) p != p)
892 return -ERANGE;
893
b8c597d5
LP		 894 if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
895 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
896 (unsigned long long) p, s->pid_file);
897 return -ESRCH;
898 }
899
16f6025e
LP		 900 if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
901 /* FIXME: we need to do something here */
902 return r;
903
b8c597d5 904 s->main_pid = (pid_t) p;
034c6ed7
LP		 905 s->main_pid_known = true;
906
907 return 0;
908}
909
3e33402a
LP		 910static int service_get_sockets(Service *s, Set **_set) {
911 Set *set;
ceee3d82
LP		 912 Iterator i;
913 char *t;
3e33402a 914 int r;
ceee3d82
LP		 915
916 assert(s);
3e33402a
LP		 917 assert(_set);
918
919 /* Collects all Socket objects that belong to this
920 * service. Note that a service might have multiple sockets
921 * via multiple names. */
922
923 if (!(set = set_new(NULL, NULL)))
924 return -ENOMEM;
ceee3d82
LP		 925
926 SET_FOREACH(t, UNIT(s)->meta.names, i) {
927 char *k;
928 Unit *p;
929
930 /* Look for all socket objects that go by any of our
931 * units and collect their fds */
932
3e33402a
LP		 933 if (!(k = unit_name_change_suffix(t, ".socket"))) {
934 r = -ENOMEM;
935 goto fail;
936 }
ceee3d82
LP		 937
938 p = manager_get_unit(UNIT(s)->meta.manager, k);
939 free(k);
940
8d567588
LP		 941 if (!p)
942 continue;
ceee3d82 943
3e33402a
LP		 944 if ((r = set_put(set, p)) < 0)
945 goto fail;
ceee3d82
LP		 946 }
947
3e33402a
LP		 948 *_set = set;
949 return 0;
950
951fail:
952 set_free(set);
953 return r;
954}
955
e537352b 956static int service_notify_sockets_dead(Service *s) {
3e33402a
LP		 957 Iterator i;
958 Set *set;
47be870b 959 Socket *sock;
3e33402a
LP		 960 int r;
961
962 assert(s);
963
964 /* Notifies all our sockets when we die */
3e33402a
LP		 965 if ((r = service_get_sockets(s, &set)) < 0)
966 return r;
967
47be870b
LP		 968 SET_FOREACH(sock, set, i)
969 socket_notify_service_dead(sock);
3e33402a
LP		 970
971 set_free(set);
972
ceee3d82
LP		 973 return 0;
974}
975
034c6ed7
LP		 976static void service_set_state(Service *s, ServiceState state) {
977 ServiceState old_state;
5cb5a6ff
LP		 978 assert(s);
979
034c6ed7 980 old_state = s->state;
5cb5a6ff 981 s->state = state;
034c6ed7
LP		 982
983 if (state != SERVICE_START_PRE &&
984 state != SERVICE_START &&
985 state != SERVICE_START_POST &&
986 state != SERVICE_RELOAD &&
987 state != SERVICE_STOP &&
988 state != SERVICE_STOP_SIGTERM &&
989 state != SERVICE_STOP_SIGKILL &&
990 state != SERVICE_STOP_POST &&
991 state != SERVICE_FINAL_SIGTERM &&
992 state != SERVICE_FINAL_SIGKILL &&
993 state != SERVICE_AUTO_RESTART)
acbb0225 994 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 995
7d55e835
LP		 996 if (state != SERVICE_START &&
997 state != SERVICE_START_POST &&
034c6ed7
LP		 998 state != SERVICE_RUNNING &&
999 state != SERVICE_RELOAD &&
1000 state != SERVICE_STOP &&
1001 state != SERVICE_STOP_SIGTERM &&
1002 state != SERVICE_STOP_SIGKILL)
5e94833f 1003 service_unwatch_main_pid(s);
034c6ed7
LP		 1004
1005 if (state != SERVICE_START_PRE &&
1006 state != SERVICE_START &&
1007 state != SERVICE_START_POST &&
1008 state != SERVICE_RELOAD &&
1009 state != SERVICE_STOP &&
1010 state != SERVICE_STOP_SIGTERM &&
1011 state != SERVICE_STOP_SIGKILL &&
1012 state != SERVICE_STOP_POST &&
1013 state != SERVICE_FINAL_SIGTERM &&
e537352b 1014 state != SERVICE_FINAL_SIGKILL) {
5e94833f 1015 service_unwatch_control_pid(s);
034c6ed7 1016 s->control_command = NULL;
a16e1123 1017 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
e537352b 1018 }
034c6ed7 1019
ceee3d82
LP		 1020 if (state == SERVICE_DEAD ||
1021 state == SERVICE_STOP ||
1022 state == SERVICE_STOP_SIGTERM ||
1023 state == SERVICE_STOP_SIGKILL ||
1024 state == SERVICE_STOP_POST ||
1025 state == SERVICE_FINAL_SIGTERM ||
1026 state == SERVICE_FINAL_SIGKILL ||
1027 state == SERVICE_MAINTAINANCE ||
1028 state == SERVICE_AUTO_RESTART)
e537352b 1029 service_notify_sockets_dead(s);
ceee3d82 1030
4f2d528d
LP		 1031 if (state != SERVICE_START_PRE &&
1032 state != SERVICE_START &&
1033 !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1034 service_close_socket_fd(s);
1035
e537352b 1036 if (old_state != state)
40d50879 1037 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 1038
1039 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 1040}
1041
a16e1123
LP		 1042static int service_coldplug(Unit *u) {
1043 Service *s = SERVICE(u);
1044 int r;
1045
1046 assert(s);
1047 assert(s->state == SERVICE_DEAD);
1048
1049 if (s->deserialized_state != s->state) {
1050
1051 if (s->deserialized_state == SERVICE_START_PRE ||
1052 s->deserialized_state == SERVICE_START ||
1053 s->deserialized_state == SERVICE_START_POST ||
1054 s->deserialized_state == SERVICE_RELOAD ||
1055 s->deserialized_state == SERVICE_STOP ||
1056 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1057 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1058 s->deserialized_state == SERVICE_STOP_POST ||
1059 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1060 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
e558336f
LP		 1061 s->deserialized_state == SERVICE_AUTO_RESTART) {
1062
1063 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1064 usec_t k;
1065
1066 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1067
1068 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1069 return r;
1070 }
1071 }
a16e1123
LP		 1072
1073 if ((s->deserialized_state == SERVICE_START &&
1074 (s->type == SERVICE_FORKING ||
1075 s->type == SERVICE_DBUS)) ||
1076 s->deserialized_state == SERVICE_START_POST ||
1077 s->deserialized_state == SERVICE_RUNNING ||
1078 s->deserialized_state == SERVICE_RELOAD ||
1079 s->deserialized_state == SERVICE_STOP ||
1080 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1081 s->deserialized_state == SERVICE_STOP_SIGKILL)
1082 if (s->main_pid > 0)
1083 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1084 return r;
1085
1086 if (s->deserialized_state == SERVICE_START_PRE ||
1087 s->deserialized_state == SERVICE_START ||
1088 s->deserialized_state == SERVICE_START_POST ||
1089 s->deserialized_state == SERVICE_RELOAD ||
1090 s->deserialized_state == SERVICE_STOP ||
1091 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1092 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1093 s->deserialized_state == SERVICE_STOP_POST ||
1094 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1095 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1096 if (s->control_pid > 0)
1097 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1098 return r;
1099
1100 service_set_state(s, s->deserialized_state);
1101 }
1102
1103 return 0;
1104}
1105
44d8db9e
LP		 1106static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1107 Iterator i;
1108 int r;
1109 int *rfds = NULL;
1110 unsigned rn_fds = 0;
3e33402a 1111 Set *set;
47be870b 1112 Socket *sock;
44d8db9e
LP		 1113
1114 assert(s);
1115 assert(fds);
1116 assert(n_fds);
1117
3e33402a
LP		 1118 if ((r = service_get_sockets(s, &set)) < 0)
1119 return r;
1120
47be870b 1121 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 1122 int *cfds;
1123 unsigned cn_fds;
1124
47be870b 1125 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1126 goto fail;
1127
1128 if (!cfds)
1129 continue;
1130
1131 if (!rfds) {
1132 rfds = cfds;
1133 rn_fds = cn_fds;
1134 } else {
1135 int *t;
1136
1137 if (!(t = new(int, rn_fds+cn_fds))) {
1138 free(cfds);
1139 r = -ENOMEM;
1140 goto fail;
1141 }
1142
1143 memcpy(t, rfds, rn_fds);
1144 memcpy(t+rn_fds, cfds, cn_fds);
1145 free(rfds);
1146 free(cfds);
1147
1148 rfds = t;
1149 rn_fds = rn_fds+cn_fds;
1150 }
1151 }
1152
1153 *fds = rfds;
1154 *n_fds = rn_fds;
3e33402a
LP		 1155
1156 set_free(set);
1157
44d8db9e
LP		 1158 return 0;
1159
1160fail:
3e33402a 1161 set_free(set);
44d8db9e 1162 free(rfds);
3e33402a 1163
44d8db9e
LP		 1164 return r;
1165}
1166
81a2b7ce
LP		 1167static int service_spawn(
1168 Service *s,
1169 ExecCommand *c,
1170 bool timeout,
1171 bool pass_fds,
1172 bool apply_permissions,
1173 bool apply_chroot,
1174 pid_t *_pid) {
1175
034c6ed7
LP		 1176 pid_t pid;
1177 int r;
44d8db9e
LP		 1178 int *fds = NULL;
1179 unsigned n_fds = 0;
9e2f7c11 1180 char **argv;
034c6ed7
LP		 1181
1182 assert(s);
1183 assert(c);
1184 assert(_pid);
1185
4f2d528d
LP		 1186 if (pass_fds) {
1187 if (s->socket_fd >= 0) {
1188 fds = &s->socket_fd;
1189 n_fds = 1;
1190 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
44d8db9e 1191 goto fail;
4f2d528d 1192 }
44d8db9e 1193
e558336f 1194 if (timeout && s->timeout_usec) {
acbb0225 1195 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1196 goto fail;
1197 } else
acbb0225 1198 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1199
9e2f7c11
LP		 1200 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1201 r = -ENOMEM;
1202 goto fail;
1203 }
1204
1205 r = exec_spawn(c,
1206 argv,
1207 &s->exec_context,
1208 fds, n_fds,
1137a57c 1209 s->meta.manager->environment,
9e2f7c11
LP		 1210 apply_permissions,
1211 apply_chroot,
1212 UNIT(s)->meta.manager->confirm_spawn,
1213 UNIT(s)->meta.cgroup_bondings,
1214 &pid);
1215
1216 strv_free(argv);
1217 if (r < 0)
034c6ed7
LP		 1218 goto fail;
1219
4f2d528d
LP		 1220 if (fds) {
1221 if (s->socket_fd >= 0)
1222 service_close_socket_fd(s);
1223 else
1224 free(fds);
1225 }
1226
87f0e418 1227 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1228 /* FIXME: we need to do something here */
1229 goto fail;
1230
1231 *_pid = pid;
1232
5cb5a6ff 1233 return 0;
034c6ed7
LP		 1234
1235fail:
44d8db9e
LP		 1236 free(fds);
1237
034c6ed7 1238 if (timeout)
acbb0225 1239 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1240
1241 return r;
1242}
1243
80876c20
LP		 1244static int main_pid_good(Service *s) {
1245 assert(s);
1246
1247 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1248 * don't know */
1249
1250 /* If we know the pid file, then lets just check if it is
1251 * still valid */
1252 if (s->main_pid_known)
1253 return s->main_pid > 0;
1254
1255 /* We don't know the pid */
1256 return -EAGAIN;
1257}
1258
1259static int control_pid_good(Service *s) {
1260 assert(s);
1261
1262 return s->control_pid > 0;
1263}
1264
1265static int cgroup_good(Service *s) {
1266 int r;
1267
1268 assert(s);
1269
1270 if (s->valid_no_process)
1271 return -EAGAIN;
1272
1273 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1274 return r;
1275
1276 return !r;
1277}
1278
034c6ed7
LP		 1279static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1280 int r;
1281 assert(s);
1282
1283 if (!success)
1284 s->failure = true;
1285
1286 if (allow_restart &&
3a762661 1287 s->allow_restart &&
034c6ed7
LP		 1288 (s->restart == SERVICE_RESTART_ALWAYS ||
1289 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1290
acbb0225 1291 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1292 goto fail;
1293
1294 service_set_state(s, SERVICE_AUTO_RESTART);
1295 } else
1296 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1297
1298 return;
1299
1300fail:
9e2f7c11 1301 log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1302 service_enter_dead(s, false, false);
1303}
1304
1305static void service_enter_signal(Service *s, ServiceState state, bool success);
1306
1307static void service_enter_stop_post(Service *s, bool success) {
1308 int r;
1309 assert(s);
1310
1311 if (!success)
1312 s->failure = true;
1313
5e94833f
LP		 1314 service_unwatch_control_pid(s);
1315
a16e1123 1316 s->control_command_id = SERVICE_EXEC_STOP_POST;
80876c20 1317 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
81a2b7ce
LP		 1318 if ((r = service_spawn(s,
1319 s->control_command,
1320 true,
1321 false,
1322 !s->permissions_start_only,
1323 !s->root_directory_start_only,
1324 &s->control_pid)) < 0)
034c6ed7
LP		 1325 goto fail;
1326
d6ea93e3 1327
80876c20
LP		 1328 service_set_state(s, SERVICE_STOP_POST);
1329 } else
1330 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
034c6ed7
LP		 1331
1332 return;
1333
1334fail:
9e2f7c11 1335 log_warning("%s failed to run stop-post executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1336 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1337}
1338
1339static void service_enter_signal(Service *s, ServiceState state, bool success) {
1340 int r;
1341 bool sent = false;
1342
1343 assert(s);
1344
1345 if (!success)
1346 s->failure = true;
1347
80876c20
LP		 1348 if (s->kill_mode != KILL_NONE) {
1349 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
034c6ed7 1350
50159e6a 1351 if (s->kill_mode == KILL_CONTROL_GROUP) {
034c6ed7 1352
50159e6a
LP		 1353 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1354 if (r != -EAGAIN && r != -ESRCH)
1355 goto fail;
1356 } else
034c6ed7
LP		 1357 sent = true;
1358 }
1359
50159e6a
LP		 1360 if (!sent) {
1361 r = 0;
80876c20 1362
50159e6a
LP		 1363 if (s->main_pid > 0) {
1364 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1365 r = -errno;
1366 else
1367 sent = true;
1368 }
1369
1370 if (s->control_pid > 0) {
1371 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1372 r = -errno;
1373 else
1374 sent = true;
1375 }
1376
1377 if (r < 0)
1378 goto fail;
1379 }
d6ea93e3 1380 }
034c6ed7 1381
e93bc5a6 1382 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
e558336f
LP		 1383 if (s->timeout_usec > 0)
1384 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1385 goto fail;
d6ea93e3 1386
80876c20
LP		 1387 service_set_state(s, state);
1388 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1389 service_enter_stop_post(s, true);
1390 else
034c6ed7
LP		 1391 service_enter_dead(s, true, true);
1392
1393 return;
1394
1395fail:
9e2f7c11 1396 log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7 1397
80876c20 1398 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
034c6ed7
LP		 1399 service_enter_stop_post(s, false);
1400 else
1401 service_enter_dead(s, false, true);
1402}
1403
1404static void service_enter_stop(Service *s, bool success) {
1405 int r;
1406 assert(s);
1407
1408 if (!success)
1409 s->failure = true;
1410
5e94833f
LP		 1411 service_unwatch_control_pid(s);
1412
a16e1123 1413 s->control_command_id = SERVICE_EXEC_STOP;
80876c20 1414 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
81a2b7ce
LP		 1415 if ((r = service_spawn(s,
1416 s->control_command,
1417 true,
1418 false,
1419 !s->permissions_start_only,
1420 !s->root_directory_start_only,
1421 &s->control_pid)) < 0)
034c6ed7
LP		 1422 goto fail;
1423
80876c20
LP		 1424 service_set_state(s, SERVICE_STOP);
1425 } else
034c6ed7
LP		 1426 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1427
1428 return;
1429
1430fail:
9e2f7c11 1431 log_warning("%s failed to run stop executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1432 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1433}
1434
80876c20
LP		 1435static void service_enter_running(Service *s, bool success) {
1436 assert(s);
1437
1438 if (!success)
1439 s->failure = true;
1440
05e343b7
LP		 1441 if (main_pid_good(s) != 0 &&
1442 cgroup_good(s) != 0 &&
1443 (s->bus_name_good || s->type != SERVICE_DBUS))
80876c20
LP		 1444 service_set_state(s, SERVICE_RUNNING);
1445 else if (s->valid_no_process)
1446 service_set_state(s, SERVICE_EXITED);
1447 else
1448 service_enter_stop(s, true);
1449}
1450
034c6ed7
LP		 1451static void service_enter_start_post(Service *s) {
1452 int r;
1453 assert(s);
1454
5e94833f
LP		 1455 service_unwatch_control_pid(s);
1456
a16e1123 1457 s->control_command_id = SERVICE_EXEC_START_POST;
80876c20 1458 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
81a2b7ce
LP		 1459 if ((r = service_spawn(s,
1460 s->control_command,
1461 true,
1462 false,
1463 !s->permissions_start_only,
1464 !s->root_directory_start_only,
1465 &s->control_pid)) < 0)
034c6ed7
LP		 1466 goto fail;
1467
d6ea93e3 1468
80876c20
LP		 1469 service_set_state(s, SERVICE_START_POST);
1470 } else
1471 service_enter_running(s, true);
034c6ed7
LP		 1472
1473 return;
1474
1475fail:
9e2f7c11 1476 log_warning("%s failed to run start-post executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1477 service_enter_stop(s, false);
1478}
1479
1480static void service_enter_start(Service *s) {
1481 pid_t pid;
1482 int r;
1483
1484 assert(s);
1485
1486 assert(s->exec_command[SERVICE_EXEC_START]);
1487 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1488
80876c20
LP		 1489 if (s->type == SERVICE_FORKING)
1490 service_unwatch_control_pid(s);
1491 else
1492 service_unwatch_main_pid(s);
1493
81a2b7ce
LP		 1494 if ((r = service_spawn(s,
1495 s->exec_command[SERVICE_EXEC_START],
05e343b7 1496 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS,
81a2b7ce
LP		 1497 true,
1498 true,
1499 true,
1500 &pid)) < 0)
034c6ed7
LP		 1501 goto fail;
1502
1503 if (s->type == SERVICE_SIMPLE) {
1504 /* For simple services we immediately start
1505 * the START_POST binaries. */
1506
1507 s->main_pid = pid;
1508 s->main_pid_known = true;
80876c20 1509
034c6ed7
LP		 1510 service_enter_start_post(s);
1511
1512 } else if (s->type == SERVICE_FORKING) {
1513
1514 /* For forking services we wait until the start
1515 * process exited. */
1516
1517 s->control_pid = pid;
80876c20 1518
a16e1123 1519 s->control_command_id = SERVICE_EXEC_START;
034c6ed7 1520 s->control_command = s->exec_command[SERVICE_EXEC_START];
80876c20
LP		 1521 service_set_state(s, SERVICE_START);
1522
05e343b7
LP		 1523 } else if (s->type == SERVICE_FINISH ||
1524 s->type == SERVICE_DBUS) {
7d55e835
LP		 1525
1526 /* For finishing services we wait until the start
1527 * process exited, too, but it is our main process. */
1528
05e343b7
LP		 1529 /* For D-Bus services we know the main pid right away,
1530 * but wait for the bus name to appear on the bus. */
1531
7d55e835 1532 s->main_pid = pid;
5e94833f 1533 s->main_pid_known = true;
80876c20 1534
80876c20 1535 service_set_state(s, SERVICE_START);
034c6ed7
LP		 1536 } else
1537 assert_not_reached("Unknown service type");
1538
1539 return;
1540
1541fail:
9e2f7c11 1542 log_warning("%s failed to run start exectuable: %s", UNIT(s)->meta.id, strerror(-r));
80876c20 1543 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 1544}
1545
1546static void service_enter_start_pre(Service *s) {
1547 int r;
1548
1549 assert(s);
1550
5e94833f
LP		 1551 service_unwatch_control_pid(s);
1552
a16e1123 1553 s->control_command_id = SERVICE_EXEC_START_PRE;
80876c20 1554 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
81a2b7ce
LP		 1555 if ((r = service_spawn(s,
1556 s->control_command,
1557 true,
1558 false,
1559 !s->permissions_start_only,
1560 !s->root_directory_start_only,
1561 &s->control_pid)) < 0)
034c6ed7
LP		 1562 goto fail;
1563
80876c20
LP		 1564 service_set_state(s, SERVICE_START_PRE);
1565 } else
034c6ed7
LP		 1566 service_enter_start(s);
1567
1568 return;
1569
1570fail:
9e2f7c11 1571 log_warning("%s failed to run start-pre executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1572 service_enter_dead(s, false, true);
1573}
1574
1575static void service_enter_restart(Service *s) {
1576 int r;
1577 assert(s);
1578
9ea9a0c8
LP		 1579 service_enter_dead(s, true, false);
1580
87f0e418 1581 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1582 goto fail;
1583
9e2f7c11 1584 log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
034c6ed7
LP		 1585 return;
1586
1587fail:
1588
9e2f7c11 1589 log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1590 service_enter_dead(s, false, false);
1591}
1592
1593static void service_enter_reload(Service *s) {
1594 int r;
1595
1596 assert(s);
1597
5e94833f
LP		 1598 service_unwatch_control_pid(s);
1599
a16e1123 1600 s->control_command_id = SERVICE_EXEC_RELOAD;
80876c20 1601 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
81a2b7ce
LP		 1602 if ((r = service_spawn(s,
1603 s->control_command,
1604 true,
1605 false,
1606 !s->permissions_start_only,
1607 !s->root_directory_start_only,
1608 &s->control_pid)) < 0)
034c6ed7
LP		 1609 goto fail;
1610
80876c20
LP		 1611 service_set_state(s, SERVICE_RELOAD);
1612 } else
1613 service_enter_running(s, true);
034c6ed7
LP		 1614
1615 return;
1616
1617fail:
9e2f7c11 1618 log_warning("%s failed to run reload executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1619 service_enter_stop(s, false);
1620}
1621
1622static void service_run_next(Service *s, bool success) {
1623 int r;
1624
1625 assert(s);
1626 assert(s->control_command);
1627 assert(s->control_command->command_next);
1628
1629 if (!success)
1630 s->failure = true;
1631
1632 s->control_command = s->control_command->command_next;
1633
5e94833f
LP		 1634 service_unwatch_control_pid(s);
1635
81a2b7ce
LP		 1636 if ((r = service_spawn(s,
1637 s->control_command,
1638 true,
1639 false,
1640 !s->permissions_start_only,
1641 !s->root_directory_start_only,
1642 &s->control_pid)) < 0)
034c6ed7
LP		 1643 goto fail;
1644
1645 return;
1646
1647fail:
9e2f7c11 1648 log_warning("%s failed to run spawn next executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7 1649
80876c20
LP		 1650 if (s->state == SERVICE_START_PRE)
1651 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1652 else if (s->state == SERVICE_STOP)
1653 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
034c6ed7
LP		 1654 else if (s->state == SERVICE_STOP_POST)
1655 service_enter_dead(s, false, true);
1656 else
1657 service_enter_stop(s, false);
5cb5a6ff
LP		 1658}
1659
87f0e418
LP		 1660static int service_start(Unit *u) {
1661 Service *s = SERVICE(u);
5cb5a6ff
LP		 1662
1663 assert(s);
1664
034c6ed7
LP		 1665 /* We cannot fulfill this request right now, try again later
1666 * please! */
1667 if (s->state == SERVICE_STOP ||
1668 s->state == SERVICE_STOP_SIGTERM ||
1669 s->state == SERVICE_STOP_SIGKILL ||
1670 s->state == SERVICE_STOP_POST ||
1671 s->state == SERVICE_FINAL_SIGTERM ||
1672 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1673 return -EAGAIN;
1674
034c6ed7
LP		 1675 /* Already on it! */
1676 if (s->state == SERVICE_START_PRE ||
1677 s->state == SERVICE_START ||
1678 s->state == SERVICE_START_POST)
1679 return 0;
1680
1681 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1682
1e2e8133
LP		 1683 /* Make sure we don't enter a busy loop of some kind. */
1684 if (!ratelimit_test(&s->ratelimit)) {
9e2f7c11 1685 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1e2e8133
LP		 1686 return -EAGAIN;
1687 }
1688
034c6ed7
LP		 1689 s->failure = false;
1690 s->main_pid_known = false;
3a762661 1691 s->allow_restart = true;
034c6ed7
LP		 1692
1693 service_enter_start_pre(s);
1694 return 0;
5cb5a6ff
LP		 1695}
1696
87f0e418
LP		 1697static int service_stop(Unit *u) {
1698 Service *s = SERVICE(u);
5cb5a6ff
LP		 1699
1700 assert(s);
1701
e537352b 1702 /* Cannot do this now */
034c6ed7
LP		 1703 if (s->state == SERVICE_START_PRE ||
1704 s->state == SERVICE_START ||
1705 s->state == SERVICE_START_POST ||
1706 s->state == SERVICE_RELOAD)
1707 return -EAGAIN;
1708
e537352b
LP		 1709 /* Already on it */
1710 if (s->state == SERVICE_STOP ||
1711 s->state == SERVICE_STOP_SIGTERM ||
1712 s->state == SERVICE_STOP_SIGKILL ||
1713 s->state == SERVICE_STOP_POST ||
1714 s->state == SERVICE_FINAL_SIGTERM ||
1715 s->state == SERVICE_FINAL_SIGKILL)
1716 return 0;
1717
034c6ed7
LP		 1718 if (s->state == SERVICE_AUTO_RESTART) {
1719 service_set_state(s, SERVICE_DEAD);
1720 return 0;
1721 }
1722
80876c20 1723 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
5cb5a6ff 1724
3a762661
LP		 1725 /* This is a user request, so don't do restarts on this
1726 * shutdown. */
1727 s->allow_restart = false;
1728
034c6ed7 1729 service_enter_stop(s, true);
5cb5a6ff
LP		 1730 return 0;
1731}
1732
87f0e418
LP		 1733static int service_reload(Unit *u) {
1734 Service *s = SERVICE(u);
034c6ed7
LP		 1735
1736 assert(s);
1737
80876c20 1738 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
034c6ed7
LP		 1739
1740 service_enter_reload(s);
5cb5a6ff
LP		 1741 return 0;
1742}
1743
87f0e418
LP		 1744static bool service_can_reload(Unit *u) {
1745 Service *s = SERVICE(u);
034c6ed7
LP		 1746
1747 assert(s);
1748
1749 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1750}
1751
a16e1123
LP		 1752static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1753 Service *s = SERVICE(u);
1754
1755 assert(u);
1756 assert(f);
1757 assert(fds);
1758
1759 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1760 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1761
1762 if (s->control_pid > 0)
1763 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) (s->control_pid));
1764
1765 if (s->main_pid > 0)
1766 unit_serialize_item_format(u, f, "main-pid", "%u", (unsigned) (s->main_pid));
1767
1768 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1769
1770 /* There's a minor uncleanliness here: if there are multiple
1771 * commands attached here, we will start from the first one
1772 * again */
1773 if (s->control_command_id >= 0)
825636e5 1774 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
a16e1123
LP		 1775
1776 if (s->socket_fd >= 0) {
1777 int copy;
1778
1779 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1780 return copy;
1781
1782 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1783 }
1784
1785 return 0;
1786}
1787
1788static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1789 Service *s = SERVICE(u);
1790 int r;
1791
1792 assert(u);
1793 assert(key);
1794 assert(value);
1795 assert(fds);
1796
1797 if (streq(key, "state")) {
1798 ServiceState state;
1799
1800 if ((state = service_state_from_string(value)) < 0)
1801 log_debug("Failed to parse state value %s", value);
1802 else
1803 s->deserialized_state = state;
1804 } else if (streq(key, "failure")) {
1805 int b;
1806
1807 if ((b = parse_boolean(value)) < 0)
1808 log_debug("Failed to parse failure value %s", value);
1809 else
1810 s->failure = b || s->failure;
1811 } else if (streq(key, "control-pid")) {
1812 unsigned pid;
1813
1814 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1815 log_debug("Failed to parse control-pid value %s", value);
1816 else
1817 s->control_pid = (pid_t) pid;
1818 } else if (streq(key, "main-pid")) {
1819 unsigned pid;
1820
1821 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1822 log_debug("Failed to parse main-pid value %s", value);
1823 else
1824 s->main_pid = (pid_t) pid;
1825 } else if (streq(key, "main-pid-known")) {
1826 int b;
1827
1828 if ((b = parse_boolean(value)) < 0)
1829 log_debug("Failed to parse main-pid-known value %s", value);
1830 else
1831 s->main_pid_known = b;
1832 } else if (streq(key, "control-command")) {
1833 ServiceExecCommand id;
1834
1835 if ((id = service_exec_command_from_string(value)) < 0)
1836 log_debug("Failed to parse exec-command value %s", value);
1837 else {
1838 s->control_command_id = id;
1839 s->control_command = s->exec_command[id];
1840 }
1841 } else if (streq(key, "socket-fd")) {
1842 int fd;
1843
1844 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1845 log_debug("Failed to parse socket-fd value %s", value);
1846 else {
1847
1848 if (s->socket_fd >= 0)
1849 close_nointr_nofail(s->socket_fd);
1850 s->socket_fd = fdset_remove(fds, fd);
1851 }
1852 } else
1853 log_debug("Unknown serialization key '%s'", key);
1854
1855 return 0;
1856}
1857
87f0e418
LP		 1858static UnitActiveState service_active_state(Unit *u) {
1859 assert(u);
5cb5a6ff 1860
acbb0225 1861 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1862}
1863
10a94420
LP		 1864static const char *service_sub_state_to_string(Unit *u) {
1865 assert(u);
1866
1867 return service_state_to_string(SERVICE(u)->state);
1868}
1869
701cc384
LP		 1870static bool service_check_gc(Unit *u) {
1871 Service *s = SERVICE(u);
1872
1873 assert(s);
1874
1875 return !!s->sysv_path;
1876}
1877
1878static bool service_check_snapshot(Unit *u) {
1879 Service *s = SERVICE(u);
1880
1881 assert(s);
1882
1883 return !s->got_socket_fd;
1884}
1885
87f0e418
LP		 1886static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1887 Service *s = SERVICE(u);
034c6ed7 1888 bool success;
5cb5a6ff
LP		 1889
1890 assert(s);
034c6ed7
LP		 1891 assert(pid >= 0);
1892
cb8a8f78 1893 success = is_clean_exit(code, status);
034c6ed7
LP		 1894 s->failure = s->failure || !success;
1895
1896 if (s->main_pid == pid) {
1897
1898 exec_status_fill(&s->main_exec_status, pid, code, status);
1899 s->main_pid = 0;
1900
7d55e835 1901 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
034c6ed7
LP		 1902 assert(s->exec_command[SERVICE_EXEC_START]);
1903 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1904 }
1905
9e2f7c11 1906 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 1907
1908 /* The service exited, so the service is officially
1909 * gone. */
1910
1911 switch (s->state) {
1912
1913 case SERVICE_START_POST:
1914 case SERVICE_RELOAD:
1915 case SERVICE_STOP:
1916 /* Need to wait until the operation is
1917 * done */
1918 break;
1919
7d55e835
LP		 1920 case SERVICE_START:
1921 assert(s->type == SERVICE_FINISH);
1922
1923 /* This was our main goal, so let's go on */
1924 if (success)
1925 service_enter_start_post(s);
1926 else
80876c20 1927 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
7d55e835
LP		 1928 break;
1929
034c6ed7 1930 case SERVICE_RUNNING:
80876c20 1931 service_enter_running(s, success);
034c6ed7
LP		 1932 break;
1933
1934 case SERVICE_STOP_SIGTERM:
1935 case SERVICE_STOP_SIGKILL:
1936
1937 if (!control_pid_good(s))
1938 service_enter_stop_post(s, success);
5cb5a6ff 1939
034c6ed7
LP		 1940 /* If there is still a control process, wait for that first */
1941 break;
5cb5a6ff 1942
034c6ed7
LP		 1943 default:
1944 assert_not_reached("Uh, main process died at wrong time.");
1945 }
5cb5a6ff 1946
034c6ed7 1947 } else if (s->control_pid == pid) {
034c6ed7 1948
a16e1123
LP		 1949 if (s->control_command)
1950 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1951
034c6ed7
LP		 1952 s->control_pid = 0;
1953
9e2f7c11 1954 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 1955
1956 /* If we are shutting things down anyway we
1957 * don't care about failing commands. */
1958
a16e1123 1959 if (s->control_command && s->control_command->command_next && success) {
034c6ed7
LP		 1960
1961 /* There is another command to *
1962 * execute, so let's do that. */
1963
9e2f7c11 1964 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
034c6ed7
LP		 1965 service_run_next(s, success);
1966
80876c20 1967 } else {
034c6ed7
LP		 1968 /* No further commands for this step, so let's
1969 * figure out what to do next */
1970
a16e1123
LP		 1971 s->control_command = NULL;
1972 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1973
9e2f7c11 1974 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
bd982a8b 1975
034c6ed7
LP		 1976 switch (s->state) {
1977
1978 case SERVICE_START_PRE:
1979 if (success)
1980 service_enter_start(s);
1981 else
80876c20 1982 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 1983 break;
1984
1985 case SERVICE_START:
1986 assert(s->type == SERVICE_FORKING);
1987
1988 /* Let's try to load the pid
1989 * file here if we can. We
1990 * ignore the return value,
1991 * since the PID file might
1992 * actually be created by a
1993 * START_POST script */
1994
1995 if (success) {
1996 if (s->pid_file)
1997 service_load_pid_file(s);
1998
1999 service_enter_start_post(s);
2000 } else
80876c20 2001 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2002
2003 break;
2004
2005 case SERVICE_START_POST:
2006 if (success && s->pid_file && !s->main_pid_known) {
2007 int r;
2008
2009 /* Hmm, let's see if we can
2010 * load the pid now after the
2011 * start-post scripts got
2012 * executed. */
2013
2014 if ((r = service_load_pid_file(s)) < 0)
9e2f7c11 2015 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
034c6ed7
LP		 2016 }
2017
2018 /* Fall through */
2019
2020 case SERVICE_RELOAD:
80876c20
LP		 2021 if (success)
2022 service_enter_running(s, true);
2023 else
034c6ed7
LP		 2024 service_enter_stop(s, false);
2025
2026 break;
2027
2028 case SERVICE_STOP:
80876c20 2029 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
034c6ed7
LP		 2030 break;
2031
2032 case SERVICE_STOP_SIGTERM:
2033 case SERVICE_STOP_SIGKILL:
2034 if (main_pid_good(s) <= 0)
2035 service_enter_stop_post(s, success);
2036
2037 /* If there is still a service
2038 * process around, wait until
2039 * that one quit, too */
2040 break;
2041
2042 case SERVICE_STOP_POST:
2043 case SERVICE_FINAL_SIGTERM:
2044 case SERVICE_FINAL_SIGKILL:
2045 service_enter_dead(s, success, true);
2046 break;
2047
2048 default:
2049 assert_not_reached("Uh, control process died at wrong time.");
2050 }
2051 }
2052 } else
2053 assert_not_reached("Got SIGCHLD for unkown PID");
2054}
2055
acbb0225 2056static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 2057 Service *s = SERVICE(u);
034c6ed7
LP		 2058
2059 assert(s);
2060 assert(elapsed == 1);
2061
acbb0225 2062 assert(w == &s->timer_watch);
034c6ed7
LP		 2063
2064 switch (s->state) {
2065
2066 case SERVICE_START_PRE:
2067 case SERVICE_START:
9e2f7c11 2068 log_warning("%s operation timed out. Terminating.", u->meta.id);
80876c20
LP		 2069 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2070 break;
2071
034c6ed7
LP		 2072 case SERVICE_START_POST:
2073 case SERVICE_RELOAD:
9e2f7c11 2074 log_warning("%s operation timed out. Stopping.", u->meta.id);
034c6ed7
LP		 2075 service_enter_stop(s, false);
2076 break;
2077
2078 case SERVICE_STOP:
9e2f7c11 2079 log_warning("%s stopping timed out. Terminating.", u->meta.id);
034c6ed7
LP		 2080 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2081 break;
2082
2083 case SERVICE_STOP_SIGTERM:
9e2f7c11 2084 log_warning("%s stopping timed out. Killing.", u->meta.id);
034c6ed7
LP		 2085 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2086 break;
2087
2088 case SERVICE_STOP_SIGKILL:
2089 /* Uh, wie sent a SIGKILL and it is still not gone?
2090 * Must be something we cannot kill, so let's just be
2091 * weirded out and continue */
2092
9e2f7c11 2093 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
034c6ed7
LP		 2094 service_enter_stop_post(s, false);
2095 break;
2096
2097 case SERVICE_STOP_POST:
9e2f7c11 2098 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
034c6ed7
LP		 2099 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2100 break;
2101
2102 case SERVICE_FINAL_SIGTERM:
9e2f7c11 2103 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
034c6ed7
LP		 2104 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2105 break;
2106
2107 case SERVICE_FINAL_SIGKILL:
9e2f7c11 2108 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id);
034c6ed7
LP		 2109 service_enter_dead(s, false, true);
2110 break;
2111
2112 case SERVICE_AUTO_RESTART:
9e2f7c11 2113 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
034c6ed7
LP		 2114 service_enter_restart(s);
2115 break;
2116
2117 default:
2118 assert_not_reached("Timeout at wrong time.");
2119 }
5cb5a6ff
LP		 2120}
2121
8e274523
LP		 2122static void service_cgroup_notify_event(Unit *u) {
2123 Service *s = SERVICE(u);
2124
2125 assert(u);
2126
9e2f7c11 2127 log_debug("%s: cgroup is empty", u->meta.id);
8e274523
LP		 2128
2129 switch (s->state) {
2130
2131 /* Waiting for SIGCHLD is usually more interesting,
2132 * because it includes return codes/signals. Which is
2133 * why we ignore the cgroup events for most cases,
2134 * except when we don't know pid which to expect the
2135 * SIGCHLD for. */
2136
2137 case SERVICE_RUNNING:
80876c20 2138 service_enter_running(s, true);
8e274523
LP		 2139 break;
2140
2141 default:
2142 ;
2143 }
2144}
2145
2c4104f0 2146static int service_enumerate(Manager *m) {
2c4104f0
LP		 2147 char **p;
2148 unsigned i;
2149 DIR *d = NULL;
2150 char *path = NULL, *fpath = NULL, *name = NULL;
2151 int r;
2152
2153 assert(m);
2154
5e177ece 2155 STRV_FOREACH(p, m->sysvrcnd_path)
09cd1ab1 2156 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2c4104f0
LP		 2157 struct dirent *de;
2158
2159 free(path);
2160 path = NULL;
09cd1ab1 2161 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2c4104f0
LP		 2162 r = -ENOMEM;
2163 goto finish;
2164 }
2165
2166 if (d)
2167 closedir(d);
2168
2169 if (!(d = opendir(path))) {
2170 if (errno != ENOENT)
2171 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2172
2173 continue;
2174 }
2175
2176 while ((de = readdir(d))) {
6542952f 2177 Unit *service;
db06e3b6 2178 int a, b;
2c4104f0
LP		 2179
2180 if (ignore_file(de->d_name))
2181 continue;
2182
2183 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2184 continue;
2185
2186 if (strlen(de->d_name) < 4)
2187 continue;
2188
db06e3b6
LP		 2189 a = undecchar(de->d_name[1]);
2190 b = undecchar(de->d_name[2]);
2191
2192 if (a < 0 || b < 0)
2193 continue;
2194
2c4104f0
LP		 2195 free(fpath);
2196 fpath = NULL;
09cd1ab1 2197 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2c4104f0
LP		 2198 r = -ENOMEM;
2199 goto finish;
2200 }
2201
2202 if (access(fpath, X_OK) < 0) {
2203
2204 if (errno != ENOENT)
2205 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2206
2207 continue;
2208 }
2209
2210 free(name);
fbe9f3a9 2211 if (!(name = new(char, strlen(de->d_name) - 3 + 8 + 1))) {
2c4104f0
LP		 2212 r = -ENOMEM;
2213 goto finish;
2214 }
2215
fbe9f3a9
LP		 2216 if (startswith(de->d_name+3, "boot."))
2217 /* Drop SuSE-style boot. prefix */
2218 strcpy(stpcpy(name, de->d_name + 3 + 5), ".service");
2219 else if (endswith(de->d_name+3, ".sh"))
2220 /* Drop Debian-style .sh suffix */
2221 strcpy(stpcpy(name, de->d_name + 3) - 3, ".service");
2222 else
2223 /* Normal init scripts */
2224 strcpy(stpcpy(name, de->d_name + 3), ".service");
2225
2226 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0) {
2227 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2228 continue;
2229 }
2c4104f0 2230
09cd1ab1
LP		 2231 if (de->d_name[0] == 'S' &&
2232 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_BASIC))
fbe9f3a9
LP		 2233 SERVICE(service)->sysv_start_priority =
2234 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
db06e3b6
LP		 2235
2236 manager_dispatch_load_queue(m);
2237 service = unit_follow_merge(service);
2238
2c4104f0 2239 if (de->d_name[0] == 'S') {
6542952f
LP		 2240 Unit *runlevel_target;
2241
09cd1ab1 2242 if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
6542952f
LP		 2243 goto finish;
2244
2245 if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2c4104f0
LP		 2246 goto finish;
2247
a0fcc5f6 2248 if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2c4104f0 2249 goto finish;
23a177ef 2250
09cd1ab1 2251 } else if (de->d_name[0] == 'K' && rcnd_table[i].type == RUNLEVEL_DOWN) {
6542952f
LP		 2252 Unit *shutdown_target;
2253
23a177ef
LP		 2254 /* We honour K links only for
2255 * halt/reboot. For the normal
2256 * runlevels we assume the
2257 * stop jobs will be
2258 * implicitly added by the
6542952f
LP		 2259 * core logic. Also, we don't
2260 * really distuingish here
2261 * between the runlevels 0 and
2262 * 6 and just add them to the
2263 * special shutdown target. */
2264
2265 if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2266 goto finish;
23a177ef 2267
a0fcc5f6 2268 if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2c4104f0
LP		 2269 goto finish;
2270
a0fcc5f6 2271 if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2c4104f0
LP		 2272 goto finish;
2273 }
2274 }
2275 }
2276
2277 r = 0;
2278
2279finish:
2280 free(path);
2281 free(fpath);
2282 free(name);
fbe9f3a9
LP		 2283
2284 if (d)
2285 closedir(d);
2c4104f0
LP		 2286
2287 return r;
2288}
2289
05e343b7
LP		 2290static void service_bus_name_owner_change(
2291 Unit *u,
2292 const char *name,
2293 const char *old_owner,
2294 const char *new_owner) {
2295
2296 Service *s = SERVICE(u);
2297
2298 assert(s);
2299 assert(name);
2300
2301 assert(streq(s->bus_name, name));
2302 assert(old_owner || new_owner);
2303
2304 if (old_owner && new_owner)
2305 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2306 else if (old_owner)
2307 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2308 else
2309 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2310
2311 s->bus_name_good = !!new_owner;
2312
2313 if (s->type == SERVICE_DBUS) {
2314
2315 /* service_enter_running() will figure out what to
2316 * do */
2317 if (s->state == SERVICE_RUNNING)
2318 service_enter_running(s, true);
2319 else if (s->state == SERVICE_START && new_owner)
2320 service_enter_start_post(s);
2321
2322 } else if (new_owner &&
2323 s->main_pid <= 0 &&
2324 (s->state == SERVICE_START ||
2325 s->state == SERVICE_START_POST ||
2326 s->state == SERVICE_RUNNING ||
2327 s->state == SERVICE_RELOAD)) {
2328
2329 /* Try to acquire PID from bus service */
2330 log_debug("Trying to acquire PID from D-Bus name...");
2331
2332 bus_query_pid(u->meta.manager, name);
2333 }
2334}
2335
2336static void service_bus_query_pid_done(
2337 Unit *u,
2338 const char *name,
2339 pid_t pid) {
2340
2341 Service *s = SERVICE(u);
2342
2343 assert(s);
2344 assert(name);
2345
2346 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2347
2348 if (s->main_pid <= 0 &&
2349 (s->state == SERVICE_START ||
2350 s->state == SERVICE_START_POST ||
2351 s->state == SERVICE_RUNNING ||
2352 s->state == SERVICE_RELOAD))
2353 s->main_pid = pid;
2354}
2355
4f2d528d
LP		 2356int service_set_socket_fd(Service *s, int fd) {
2357 assert(s);
2358 assert(fd >= 0);
2359
2360 /* This is called by the socket code when instantiating a new
2361 * service for a stream socket and the socket needs to be
2362 * configured. */
2363
2364 if (UNIT(s)->meta.load_state != UNIT_LOADED)
2365 return -EINVAL;
2366
2367 if (s->socket_fd >= 0)
2368 return -EBUSY;
2369
2370 if (s->state != SERVICE_DEAD)
2371 return -EAGAIN;
2372
2373 s->socket_fd = fd;
701cc384 2374 s->got_socket_fd = true;
4f2d528d
LP		 2375 return 0;
2376}
2377
94f04347
LP		 2378static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2379 [SERVICE_DEAD] = "dead",
2380 [SERVICE_START_PRE] = "start-pre",
2381 [SERVICE_START] = "start",
2382 [SERVICE_START_POST] = "start-post",
2383 [SERVICE_RUNNING] = "running",
80876c20 2384 [SERVICE_EXITED] = "exited",
94f04347
LP		 2385 [SERVICE_RELOAD] = "reload",
2386 [SERVICE_STOP] = "stop",
2387 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2388 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2389 [SERVICE_STOP_POST] = "stop-post",
2390 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2391 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2392 [SERVICE_MAINTAINANCE] = "maintainance",
2393 [SERVICE_AUTO_RESTART] = "auto-restart",
2394};
2395
2396DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2397
2398static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2399 [SERVICE_ONCE] = "once",
2400 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
40531a55 2401 [SERVICE_RESTART_ALWAYS] = "restart-always",
94f04347
LP		 2402};
2403
2404DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2405
2406static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2407 [SERVICE_FORKING] = "forking",
2408 [SERVICE_SIMPLE] = "simple",
05e343b7
LP		 2409 [SERVICE_FINISH] = "finish",
2410 [SERVICE_DBUS] = "dbus"
94f04347
LP		 2411};
2412
2413DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2414
e537352b 2415static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
94f04347
LP		 2416 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2417 [SERVICE_EXEC_START] = "ExecStart",
2418 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2419 [SERVICE_EXEC_RELOAD] = "ExecReload",
2420 [SERVICE_EXEC_STOP] = "ExecStop",
2421 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2422};
2423
2424DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2425
87f0e418 2426const UnitVTable service_vtable = {
5cb5a6ff
LP		 2427 .suffix = ".service",
2428
034c6ed7
LP		 2429 .init = service_init,
2430 .done = service_done,
a16e1123
LP		 2431 .load = service_load,
2432
2433 .coldplug = service_coldplug,
034c6ed7 2434
5cb5a6ff
LP		 2435 .dump = service_dump,
2436
2437 .start = service_start,
2438 .stop = service_stop,
2439 .reload = service_reload,
2440
034c6ed7
LP		 2441 .can_reload = service_can_reload,
2442
a16e1123
LP		 2443 .serialize = service_serialize,
2444 .deserialize_item = service_deserialize_item,
2445
5cb5a6ff 2446 .active_state = service_active_state,
10a94420 2447 .sub_state_to_string = service_sub_state_to_string,
5cb5a6ff 2448
701cc384
LP		 2449 .check_gc = service_check_gc,
2450 .check_snapshot = service_check_snapshot,
2451
034c6ed7
LP		 2452 .sigchld_event = service_sigchld_event,
2453 .timer_event = service_timer_event,
2c4104f0 2454
8e274523
LP		 2455 .cgroup_notify_empty = service_cgroup_notify_event,
2456
05e343b7
LP		 2457 .bus_name_owner_change = service_bus_name_owner_change,
2458 .bus_query_pid_done = service_bus_query_pid_done,
2459
4139c1b2
LP		 2460 .bus_message_handler = bus_service_message_handler,
2461
2c4104f0 2462 .enumerate = service_enumerate
5cb5a6ff 2463};
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