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manager: split off path lookup logic into own .c file
[thirdparty/systemd.git] / src / 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 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,
fc5df99e 43 RUNLEVEL_SYSINIT
09cd1ab1
LP		 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
cfe243e3 60 /* SUSE style boot.d */
fc5df99e 61 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
fbe9f3a9
LP		 62
63 /* Debian style rcS.d */
fc5df99e 64 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
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
b7ccee3c
LP		 172static char *sysv_translate_name(const char *name) {
173 char *r;
174
175 if (!(r = new(char, strlen(name) + sizeof(".service"))))
176 return NULL;
177
178 if (startswith(name, "boot."))
179 /* Drop SuSE-style boot. prefix */
180 strcpy(stpcpy(r, name + 5), ".service");
181 else if (endswith(name, ".sh"))
182 /* Drop Debian-style .sh suffix */
183 strcpy(stpcpy(r, name) - 3, ".service");
184 else
185 /* Normal init scripts */
186 strcpy(stpcpy(r, name), ".service");
187
188 return r;
189}
190
191static int sysv_translate_facility(const char *name, char **_r) {
2c4104f0
LP		 192
193 static const char * const table[] = {
6464aa08 194 /* LSB defined facilities */
2c4104f0
LP		 195 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
196 "$network", SPECIAL_NETWORK_TARGET,
197 "$named", SPECIAL_NSS_LOOKUP_TARGET,
198 "$portmap", SPECIAL_RPCBIND_TARGET,
199 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
200 "$syslog", SPECIAL_SYSLOG_TARGET,
6464aa08
LP		 201 "$time", SPECIAL_RTC_SET_TARGET,
202
203 /* Debian extensions */
204 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
205 "$mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
1e287fe3 206 "$x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE
2c4104f0
LP		 207 };
208
209 unsigned i;
210 char *r;
211
212 for (i = 0; i < ELEMENTSOF(table); i += 2)
213 if (streq(table[i], name)) {
214 if (!(r = strdup(table[i+1])))
215 return -ENOMEM;
216
217 goto finish;
218 }
219
220 if (*name == '$')
221 return 0;
222
b7ccee3c 223 if (!(r = sysv_translate_name(name)))
2c4104f0
LP		 224 return -ENOMEM;
225
226finish:
227
228 if (_r)
229 *_r = r;
230
231 return 1;
232}
233
56d748b4 234static int sysv_fix_order(Service *s) {
2c4104f0
LP		 235 Meta *other;
236 int r;
237
238 assert(s);
239
240 if (s->sysv_start_priority < 0)
241 return 0;
242
23a177ef
LP		 243 /* For each pair of services where at least one lacks a LSB
244 * header, we use the start priority value to order things. */
2c4104f0
LP		 245
246 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
247 Service *t;
248 UnitDependency d;
249
250 t = (Service*) other;
251
252 if (s == t)
253 continue;
254
255 if (t->sysv_start_priority < 0)
256 continue;
257
51a1a79d
LP		 258 /* If both units have modern headers we don't care
259 * about the priorities */
260 if ((!s->sysv_path || s->sysv_has_lsb) &&
261 (!t->sysv_path || t->sysv_has_lsb))
23a177ef
LP		 262 continue;
263
2c4104f0
LP		 264 if (t->sysv_start_priority < s->sysv_start_priority)
265 d = UNIT_AFTER;
266 else if (t->sysv_start_priority > s->sysv_start_priority)
267 d = UNIT_BEFORE;
268 else
269 continue;
270
271 /* FIXME: Maybe we should compare the name here lexicographically? */
272
701cc384 273 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
2c4104f0
LP		 274 return r;
275 }
276
277 return 0;
278}
279
280static ExecCommand *exec_command_new(const char *path, const char *arg1) {
281 ExecCommand *c;
282
283 if (!(c = new0(ExecCommand, 1)))
284 return NULL;
285
286 if (!(c->path = strdup(path))) {
287 free(c);
288 return NULL;
289 }
290
291 if (!(c->argv = strv_new(path, arg1, NULL))) {
292 free(c->path);
293 free(c);
294 return NULL;
295 }
296
297 return c;
298}
299
300static int sysv_exec_commands(Service *s) {
301 ExecCommand *c;
302
303 assert(s);
304 assert(s->sysv_path);
305
306 if (!(c = exec_command_new(s->sysv_path, "start")))
307 return -ENOMEM;
308 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
309
310 if (!(c = exec_command_new(s->sysv_path, "stop")))
311 return -ENOMEM;
312 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
313
314 if (!(c = exec_command_new(s->sysv_path, "reload")))
315 return -ENOMEM;
316 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
317
318 return 0;
319}
320
e537352b 321static int service_load_sysv_path(Service *s, const char *path) {
2c4104f0
LP		 322 FILE *f;
323 Unit *u;
324 unsigned line = 0;
325 int r;
326 enum {
327 NORMAL,
328 DESCRIPTION,
329 LSB,
330 LSB_DESCRIPTION
331 } state = NORMAL;
23a177ef
LP		 332
333 assert(s);
334 assert(path);
2c4104f0
LP		 335
336 u = UNIT(s);
337
338 if (!(f = fopen(path, "re"))) {
339 r = errno == ENOENT ? 0 : -errno;
340 goto finish;
341 }
342
2c4104f0
LP		 343 free(s->sysv_path);
344 if (!(s->sysv_path = strdup(path))) {
345 r = -ENOMEM;
346 goto finish;
347 }
348
349 while (!feof(f)) {
350 char l[LINE_MAX], *t;
351
352 if (!fgets(l, sizeof(l), f)) {
353 if (feof(f))
354 break;
355
356 r = -errno;
357 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
358 goto finish;
359 }
360
361 line++;
362
363 t = strstrip(l);
364 if (*t != '#')
365 continue;
366
367 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
368 state = LSB;
23a177ef 369 s->sysv_has_lsb = true;
2c4104f0
LP		 370 continue;
371 }
372
373 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
374 state = NORMAL;
375 continue;
376 }
377
378 t++;
379 t += strspn(t, WHITESPACE);
380
381 if (state == NORMAL) {
382
383 /* Try to parse Red Hat style chkconfig headers */
384
c2b35af6 385 if (startswith_no_case(t, "chkconfig:")) {
2c4104f0 386 int start_priority;
8309400a 387 char runlevels[16], *k;
2c4104f0
LP		 388
389 state = NORMAL;
390
8309400a
LP		 391 if (sscanf(t+10, "%15s %i %*i",
392 runlevels,
393 &start_priority) != 2) {
2c4104f0
LP		 394
395 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
396 continue;
397 }
398
fbe9f3a9
LP		 399 /* A start priority gathered from the
400 * symlink farms is preferred over the
401 * data from the LSB header. */
8309400a 402 if (start_priority < 0 || start_priority > 99)
2c4104f0 403 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
db06e3b6 404 else if (s->sysv_start_priority < 0)
8309400a
LP		 405 s->sysv_start_priority = start_priority;
406
407 char_array_0(runlevels);
408 k = delete_chars(runlevels, WHITESPACE "-");
409
410 if (k[0]) {
411 char *d;
412
413 if (!(d = strdup(k))) {
414 r = -ENOMEM;
415 goto finish;
416 }
417
418 free(s->sysv_runlevels);
419 s->sysv_runlevels = d;
2c4104f0
LP		 420 }
421
c2b35af6 422 } else if (startswith_no_case(t, "description:")) {
2c4104f0
LP		 423
424 size_t k = strlen(t);
425 char *d;
426
427 if (t[k-1] == '\\') {
428 state = DESCRIPTION;
429 t[k-1] = 0;
430 }
431
432 if (!(d = strdup(strstrip(t+12)))) {
433 r = -ENOMEM;
434 goto finish;
435 }
436
437 free(u->meta.description);
438 u->meta.description = d;
439
c2b35af6 440 } else if (startswith_no_case(t, "pidfile:")) {
2c4104f0
LP		 441
442 char *fn;
443
444 state = NORMAL;
445
446 fn = strstrip(t+8);
447 if (!path_is_absolute(fn)) {
448 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
449 continue;
450 }
451
452 if (!(fn = strdup(fn))) {
453 r = -ENOMEM;
454 goto finish;
455 }
456
457 free(s->pid_file);
458 s->pid_file = fn;
459 }
460
461 } else if (state == DESCRIPTION) {
462
463 /* Try to parse Red Hat style description
464 * continuation */
465
466 size_t k = strlen(t);
467 char *d;
468
469 if (t[k-1] == '\\')
470 t[k-1] = 0;
471 else
472 state = NORMAL;
473
474 assert(u->meta.description);
475 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
476 r = -ENOMEM;
477 goto finish;
478 }
479
480 free(u->meta.description);
481 u->meta.description = d;
482
483 } else if (state == LSB || state == LSB_DESCRIPTION) {
484
c2b35af6 485 if (startswith_no_case(t, "Provides:")) {
2c4104f0
LP		 486 char *i, *w;
487 size_t z;
488
489 state = LSB;
490
491 FOREACH_WORD(w, z, t+9, i) {
492 char *n, *m;
493
494 if (!(n = strndup(w, z))) {
495 r = -ENOMEM;
496 goto finish;
497 }
498
b7ccee3c 499 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 500 free(n);
501
502 if (r < 0)
503 goto finish;
504
505 if (r == 0)
506 continue;
507
bd77d0fc
LP		 508 if (unit_name_to_type(m) == UNIT_SERVICE)
509 r = unit_add_name(u, m);
510 else {
701cc384
LP		 511 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL, true)) >= 0)
512 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
bd77d0fc
LP		 513 }
514
2c4104f0
LP		 515 free(m);
516
517 if (r < 0)
518 goto finish;
519 }
520
c2b35af6
LP		 521 } else if (startswith_no_case(t, "Required-Start:") ||
522 startswith_no_case(t, "Should-Start:") ||
523 startswith_no_case(t, "X-Start-Before:") ||
524 startswith_no_case(t, "X-Start-After:")) {
2c4104f0
LP		 525 char *i, *w;
526 size_t z;
527
528 state = LSB;
529
530 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
531 char *n, *m;
532
533 if (!(n = strndup(w, z))) {
534 r = -ENOMEM;
535 goto finish;
536 }
537
b7ccee3c 538 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 539 free(n);
540
541 if (r < 0)
542 goto finish;
543
544 if (r == 0)
545 continue;
546
c2b35af6 547 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
2c4104f0
LP		 548 free(m);
549
550 if (r < 0)
551 goto finish;
552 }
c2b35af6 553 } else if (startswith_no_case(t, "Default-Start:")) {
8309400a
LP		 554 char *k, *d;
555
556 state = LSB;
557
558 k = delete_chars(t+14, WHITESPACE "-");
559
560 if (k[0] != 0) {
561 if (!(d = strdup(k))) {
562 r = -ENOMEM;
563 goto finish;
564 }
565
566 free(s->sysv_runlevels);
567 s->sysv_runlevels = d;
568 }
2c4104f0 569
c2b35af6 570 } else if (startswith_no_case(t, "Description:")) {
2c4104f0
LP		 571 char *d;
572
573 state = LSB_DESCRIPTION;
574
575 if (!(d = strdup(strstrip(t+12)))) {
576 r = -ENOMEM;
577 goto finish;
578 }
579
580 free(u->meta.description);
581 u->meta.description = d;
582
c2b35af6 583 } else if (startswith_no_case(t, "Short-Description:") &&
8309400a 584 !u->meta.description) {
2c4104f0
LP		 585 char *d;
586
587 /* We use the short description only
588 * if no long description is set. */
589
590 state = LSB;
591
592 if (!(d = strdup(strstrip(t+18)))) {
593 r = -ENOMEM;
594 goto finish;
595 }
596
2c4104f0
LP		 597 u->meta.description = d;
598
723c83fd
LP		 599 } else if (startswith_no_case(t, "X-Interactive:")) {
600 int b;
601
602 if ((b = parse_boolean(strstrip(t+14))) < 0) {
603 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
604 continue;
605 }
606
607 if (b)
608 s->exec_context.std_input = EXEC_INPUT_TTY;
609 else
610 s->exec_context.std_input = EXEC_INPUT_NULL;
611
2c4104f0
LP		 612 } else if (state == LSB_DESCRIPTION) {
613
614 if (startswith(l, "#\t") || startswith(l, "# ")) {
615 char *d;
616
617 assert(u->meta.description);
618 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
619 r = -ENOMEM;
620 goto finish;
621 }
622
623 free(u->meta.description);
624 u->meta.description = d;
625 } else
626 state = LSB;
627 }
628 }
629 }
630
2c4104f0
LP		 631 if ((r = sysv_exec_commands(s)) < 0)
632 goto finish;
633
09cd1ab1 634 if (!s->sysv_runlevels || chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
0bc824be
LP		 635 /* If there a runlevels configured for this service
636 * but none of the standard ones, then we assume this
637 * is some special kind of service (which might be
638 * needed for early boot) and don't create any links
639 * to it. */
640
701cc384
LP		 641 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0 ||
642 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
0bc824be 643 goto finish;
09cd1ab1
LP		 644
645 } else
646 /* Don't timeout special services during boot (like fsck) */
647 s->timeout_usec = 0;
0fd030be 648
80876c20 649 /* Special setting for all SysV services */
1f48cf56 650 s->type = SERVICE_FORKING;
80876c20 651 s->valid_no_process = true;
b29a8e58 652 s->kill_mode = KILL_PROCESS_GROUP;
1f48cf56 653 s->restart = SERVICE_ONCE;
80876c20 654
e537352b 655 u->meta.load_state = UNIT_LOADED;
23a177ef 656 r = 0;
2c4104f0
LP		 657
658finish:
659
660 if (f)
661 fclose(f);
662
663 return r;
664}
665
e537352b 666static int service_load_sysv_name(Service *s, const char *name) {
2c4104f0
LP		 667 char **p;
668
669 assert(s);
670 assert(name);
671
d017c6ca
LP		 672 /* For SysV services we strip the boot. or .sh
673 * prefixes/suffixes. */
674 if (startswith(name, "boot.") ||
675 endswith(name, ".sh.service"))
676 return -ENOENT;
677
84e3543e 678 STRV_FOREACH(p, UNIT(s)->meta.manager->lookup_paths.sysvinit_path) {
2c4104f0
LP		 679 char *path;
680 int r;
681
682 if (asprintf(&path, "%s/%s", *p, name) < 0)
683 return -ENOMEM;
684
685 assert(endswith(path, ".service"));
686 path[strlen(path)-8] = 0;
687
e537352b 688 r = service_load_sysv_path(s, path);
fbe9f3a9
LP		 689
690 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
d017c6ca 691 /* Try Debian style xxx.sh source'able init scripts */
fbe9f3a9
LP		 692 strcat(path, ".sh");
693 r = service_load_sysv_path(s, path);
694 }
695
2c4104f0
LP		 696 free(path);
697
fbe9f3a9 698 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
cfe243e3 699 /* Try SUSE style boot.xxx init scripts */
fbe9f3a9
LP		 700
701 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
702 return -ENOMEM;
703
704 path[strlen(path)-8] = 0;
705 r = service_load_sysv_path(s, path);
706 free(path);
707 }
708
23a177ef 709 if (r < 0)
2c4104f0 710 return r;
23a177ef 711
e537352b 712 if ((UNIT(s)->meta.load_state != UNIT_STUB))
23a177ef 713 break;
2c4104f0
LP		 714 }
715
716 return 0;
717}
718
e537352b 719static int service_load_sysv(Service *s) {
2c4104f0
LP		 720 const char *t;
721 Iterator i;
722 int r;
723
5cb5a6ff
LP		 724 assert(s);
725
726 /* Load service data from SysV init scripts, preferably with
727 * LSB headers ... */
728
84e3543e 729 if (strv_isempty(UNIT(s)->meta.manager->lookup_paths.sysvinit_path))
2c4104f0
LP		 730 return 0;
731
9e2f7c11 732 if ((t = UNIT(s)->meta.id))
e537352b 733 if ((r = service_load_sysv_name(s, t)) < 0)
2c4104f0
LP		 734 return r;
735
e537352b 736 if (UNIT(s)->meta.load_state == UNIT_STUB)
23a177ef 737 SET_FOREACH(t, UNIT(s)->meta.names, i) {
9e2f7c11 738 if (t == UNIT(s)->meta.id)
e537352b
LP		 739 continue;
740
741 if ((r == service_load_sysv_name(s, t)) < 0)
23a177ef
LP		 742 return r;
743
e537352b 744 if (UNIT(s)->meta.load_state != UNIT_STUB)
23a177ef
LP		 745 break;
746 }
2c4104f0
LP		 747
748 return 0;
5cb5a6ff
LP		 749}
750
05e343b7
LP		 751static int service_add_bus_name(Service *s) {
752 char *n;
753 int r;
754
755 assert(s);
756 assert(s->bus_name);
757
758 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
759 return 0;
760
761 r = unit_merge_by_name(UNIT(s), n);
762 free(n);
763
764 return r;
765}
766
243b1432
LP		 767static int service_verify(Service *s) {
768 assert(s);
769
770 if (UNIT(s)->meta.load_state != UNIT_LOADED)
771 return 0;
772
773 if (!s->exec_command[SERVICE_EXEC_START]) {
9e2f7c11 774 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
243b1432
LP		 775 return -EINVAL;
776 }
777
05e343b7
LP		 778 if (s->type == SERVICE_DBUS && !s->bus_name) {
779 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
780 return -EINVAL;
781 }
782
243b1432
LP		 783 return 0;
784}
785
e537352b
LP		 786static int service_load(Unit *u) {
787 int r;
788 Service *s = SERVICE(u);
789
790 assert(s);
1e2e8133 791
5cb5a6ff 792 /* Load a .service file */
e537352b 793 if ((r = unit_load_fragment(u)) < 0)
5cb5a6ff
LP		 794 return r;
795
bd77d0fc 796 /* Load a classic init script as a fallback, if we couldn't find anything */
e537352b
LP		 797 if (u->meta.load_state == UNIT_STUB)
798 if ((r = service_load_sysv(s)) < 0)
23a177ef 799 return r;
d46de8a1 800
23a177ef 801 /* Still nothing found? Then let's give up */
e537352b 802 if (u->meta.load_state == UNIT_STUB)
23a177ef 803 return -ENOENT;
034c6ed7 804
23a177ef
LP		 805 /* We were able to load something, then let's add in the
806 * dropin directories. */
807 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 808 return r;
23a177ef
LP		 809
810 /* This is a new unit? Then let's add in some extras */
e537352b 811 if (u->meta.load_state == UNIT_LOADED) {
23a177ef
LP		 812 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
813 return r;
814
815 if ((r = unit_add_default_cgroup(u)) < 0)
816 return r;
817
56d748b4 818 if ((r = sysv_fix_order(s)) < 0)
23a177ef 819 return r;
05e343b7
LP		 820
821 if (s->bus_name) {
822 if ((r = service_add_bus_name(s)) < 0)
823 return r;
824
825 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
826 return r;
827 }
8e274523
LP		 828 }
829
243b1432 830 return service_verify(s);
034c6ed7
LP		 831}
832
87f0e418 833static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 834
5cb5a6ff 835 ServiceExecCommand c;
87f0e418 836 Service *s = SERVICE(u);
47be870b
LP		 837 const char *prefix2;
838 char *p2;
5cb5a6ff
LP		 839
840 assert(s);
841
47be870b
LP		 842 p2 = strappend(prefix, "\t");
843 prefix2 = p2 ? p2 : prefix;
44d8db9e 844
5cb5a6ff 845 fprintf(f,
81a2b7ce
LP		 846 "%sService State: %s\n"
847 "%sPermissionsStartOnly: %s\n"
8e274523 848 "%sRootDirectoryStartOnly: %s\n"
03d6ab85 849 "%sValidNoProcess: %s\n"
50159e6a 850 "%sKillMode: %s\n"
03d6ab85 851 "%sType: %s\n",
81a2b7ce
LP		 852 prefix, service_state_to_string(s->state),
853 prefix, yes_no(s->permissions_start_only),
8e274523 854 prefix, yes_no(s->root_directory_start_only),
03d6ab85 855 prefix, yes_no(s->valid_no_process),
50159e6a 856 prefix, kill_mode_to_string(s->kill_mode),
03d6ab85 857 prefix, service_type_to_string(s->type));
5cb5a6ff 858
70123e68
LP		 859 if (s->control_pid > 0)
860 fprintf(f,
861 "%sControl PID: %llu\n",
862 prefix, (unsigned long long) s->control_pid);
863
864 if (s->main_pid > 0)
865 fprintf(f,
866 "%sMain PID: %llu\n",
867 prefix, (unsigned long long) s->main_pid);
868
034c6ed7
LP		 869 if (s->pid_file)
870 fprintf(f,
871 "%sPIDFile: %s\n",
872 prefix, s->pid_file);
873
05e343b7
LP		 874 if (s->bus_name)
875 fprintf(f,
876 "%sBusName: %s\n"
877 "%sBus Name Good: %s\n",
878 prefix, s->bus_name,
879 prefix, yes_no(s->bus_name_good));
880
5cb5a6ff
LP		 881 exec_context_dump(&s->exec_context, f, prefix);
882
e537352b 883 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
5cb5a6ff 884
44d8db9e
LP		 885 if (!s->exec_command[c])
886 continue;
887
40d50879 888 fprintf(f, "%s-> %s:\n",
94f04347 889 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 890
891 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 892 }
44d8db9e 893
2c4104f0
LP		 894 if (s->sysv_path)
895 fprintf(f,
23a177ef
LP		 896 "%sSysV Init Script Path: %s\n"
897 "%sSysV Init Script has LSB Header: %s\n",
898 prefix, s->sysv_path,
899 prefix, yes_no(s->sysv_has_lsb));
2c4104f0
LP		 900
901 if (s->sysv_start_priority >= 0)
902 fprintf(f,
23a177ef 903 "%sSysVStartPriority: %i\n",
2c4104f0
LP		 904 prefix, s->sysv_start_priority);
905
8309400a
LP		 906 if (s->sysv_runlevels)
907 fprintf(f, "%sSysVRunLevels: %s\n",
908 prefix, s->sysv_runlevels);
23a177ef 909
47be870b 910 free(p2);
5cb5a6ff
LP		 911}
912
034c6ed7
LP		 913static int service_load_pid_file(Service *s) {
914 char *k;
915 unsigned long p;
916 int r;
917
918 assert(s);
919
920 if (s->main_pid_known)
921 return 0;
922
5e94833f
LP		 923 assert(s->main_pid <= 0);
924
034c6ed7
LP		 925 if (!s->pid_file)
926 return -ENOENT;
927
928 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
929 return r;
930
931 if ((r = safe_atolu(k, &p)) < 0) {
932 free(k);
933 return r;
934 }
935
936 if ((unsigned long) (pid_t) p != p)
937 return -ERANGE;
938
b8c597d5
LP		 939 if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
940 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
941 (unsigned long long) p, s->pid_file);
942 return -ESRCH;
943 }
944
16f6025e
LP		 945 if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
946 /* FIXME: we need to do something here */
947 return r;
948
b8c597d5 949 s->main_pid = (pid_t) p;
034c6ed7
LP		 950 s->main_pid_known = true;
951
952 return 0;
953}
954
3e33402a
LP		 955static int service_get_sockets(Service *s, Set **_set) {
956 Set *set;
ceee3d82
LP		 957 Iterator i;
958 char *t;
3e33402a 959 int r;
ceee3d82
LP		 960
961 assert(s);
3e33402a
LP		 962 assert(_set);
963
964 /* Collects all Socket objects that belong to this
965 * service. Note that a service might have multiple sockets
966 * via multiple names. */
967
968 if (!(set = set_new(NULL, NULL)))
969 return -ENOMEM;
ceee3d82
LP		 970
971 SET_FOREACH(t, UNIT(s)->meta.names, i) {
972 char *k;
973 Unit *p;
974
975 /* Look for all socket objects that go by any of our
976 * units and collect their fds */
977
3e33402a
LP		 978 if (!(k = unit_name_change_suffix(t, ".socket"))) {
979 r = -ENOMEM;
980 goto fail;
981 }
ceee3d82
LP		 982
983 p = manager_get_unit(UNIT(s)->meta.manager, k);
984 free(k);
985
8d567588
LP		 986 if (!p)
987 continue;
ceee3d82 988
3e33402a
LP		 989 if ((r = set_put(set, p)) < 0)
990 goto fail;
ceee3d82
LP		 991 }
992
3e33402a
LP		 993 *_set = set;
994 return 0;
995
996fail:
997 set_free(set);
998 return r;
999}
1000
e537352b 1001static int service_notify_sockets_dead(Service *s) {
3e33402a
LP		 1002 Iterator i;
1003 Set *set;
47be870b 1004 Socket *sock;
3e33402a
LP		 1005 int r;
1006
1007 assert(s);
1008
1009 /* Notifies all our sockets when we die */
3e33402a
LP		 1010 if ((r = service_get_sockets(s, &set)) < 0)
1011 return r;
1012
47be870b
LP		 1013 SET_FOREACH(sock, set, i)
1014 socket_notify_service_dead(sock);
3e33402a
LP		 1015
1016 set_free(set);
1017
ceee3d82
LP		 1018 return 0;
1019}
1020
034c6ed7
LP		 1021static void service_set_state(Service *s, ServiceState state) {
1022 ServiceState old_state;
5cb5a6ff
LP		 1023 assert(s);
1024
034c6ed7 1025 old_state = s->state;
5cb5a6ff 1026 s->state = state;
034c6ed7
LP		 1027
1028 if (state != SERVICE_START_PRE &&
1029 state != SERVICE_START &&
1030 state != SERVICE_START_POST &&
1031 state != SERVICE_RELOAD &&
1032 state != SERVICE_STOP &&
1033 state != SERVICE_STOP_SIGTERM &&
1034 state != SERVICE_STOP_SIGKILL &&
1035 state != SERVICE_STOP_POST &&
1036 state != SERVICE_FINAL_SIGTERM &&
1037 state != SERVICE_FINAL_SIGKILL &&
1038 state != SERVICE_AUTO_RESTART)
acbb0225 1039 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1040
7d55e835
LP		 1041 if (state != SERVICE_START &&
1042 state != SERVICE_START_POST &&
034c6ed7
LP		 1043 state != SERVICE_RUNNING &&
1044 state != SERVICE_RELOAD &&
1045 state != SERVICE_STOP &&
1046 state != SERVICE_STOP_SIGTERM &&
1047 state != SERVICE_STOP_SIGKILL)
5e94833f 1048 service_unwatch_main_pid(s);
034c6ed7
LP		 1049
1050 if (state != SERVICE_START_PRE &&
1051 state != SERVICE_START &&
1052 state != SERVICE_START_POST &&
1053 state != SERVICE_RELOAD &&
1054 state != SERVICE_STOP &&
1055 state != SERVICE_STOP_SIGTERM &&
1056 state != SERVICE_STOP_SIGKILL &&
1057 state != SERVICE_STOP_POST &&
1058 state != SERVICE_FINAL_SIGTERM &&
e537352b 1059 state != SERVICE_FINAL_SIGKILL) {
5e94833f 1060 service_unwatch_control_pid(s);
034c6ed7 1061 s->control_command = NULL;
a16e1123 1062 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
e537352b 1063 }
034c6ed7 1064
ceee3d82
LP		 1065 if (state == SERVICE_DEAD ||
1066 state == SERVICE_STOP ||
1067 state == SERVICE_STOP_SIGTERM ||
1068 state == SERVICE_STOP_SIGKILL ||
1069 state == SERVICE_STOP_POST ||
1070 state == SERVICE_FINAL_SIGTERM ||
1071 state == SERVICE_FINAL_SIGKILL ||
1072 state == SERVICE_MAINTAINANCE ||
1073 state == SERVICE_AUTO_RESTART)
e537352b 1074 service_notify_sockets_dead(s);
ceee3d82 1075
4f2d528d
LP		 1076 if (state != SERVICE_START_PRE &&
1077 state != SERVICE_START &&
1078 !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1079 service_close_socket_fd(s);
1080
e537352b 1081 if (old_state != state)
40d50879 1082 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 1083
1084 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 1085}
1086
a16e1123
LP		 1087static int service_coldplug(Unit *u) {
1088 Service *s = SERVICE(u);
1089 int r;
1090
1091 assert(s);
1092 assert(s->state == SERVICE_DEAD);
1093
1094 if (s->deserialized_state != s->state) {
1095
1096 if (s->deserialized_state == SERVICE_START_PRE ||
1097 s->deserialized_state == SERVICE_START ||
1098 s->deserialized_state == SERVICE_START_POST ||
1099 s->deserialized_state == SERVICE_RELOAD ||
1100 s->deserialized_state == SERVICE_STOP ||
1101 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1102 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1103 s->deserialized_state == SERVICE_STOP_POST ||
1104 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1105 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
e558336f
LP		 1106 s->deserialized_state == SERVICE_AUTO_RESTART) {
1107
1108 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1109 usec_t k;
1110
1111 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1112
1113 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1114 return r;
1115 }
1116 }
a16e1123
LP		 1117
1118 if ((s->deserialized_state == SERVICE_START &&
1119 (s->type == SERVICE_FORKING ||
1120 s->type == SERVICE_DBUS)) ||
1121 s->deserialized_state == SERVICE_START_POST ||
1122 s->deserialized_state == SERVICE_RUNNING ||
1123 s->deserialized_state == SERVICE_RELOAD ||
1124 s->deserialized_state == SERVICE_STOP ||
1125 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1126 s->deserialized_state == SERVICE_STOP_SIGKILL)
1127 if (s->main_pid > 0)
1128 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1129 return r;
1130
1131 if (s->deserialized_state == SERVICE_START_PRE ||
1132 s->deserialized_state == SERVICE_START ||
1133 s->deserialized_state == SERVICE_START_POST ||
1134 s->deserialized_state == SERVICE_RELOAD ||
1135 s->deserialized_state == SERVICE_STOP ||
1136 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1137 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1138 s->deserialized_state == SERVICE_STOP_POST ||
1139 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1140 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1141 if (s->control_pid > 0)
1142 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1143 return r;
1144
1145 service_set_state(s, s->deserialized_state);
1146 }
1147
1148 return 0;
1149}
1150
44d8db9e
LP		 1151static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1152 Iterator i;
1153 int r;
1154 int *rfds = NULL;
1155 unsigned rn_fds = 0;
3e33402a 1156 Set *set;
47be870b 1157 Socket *sock;
44d8db9e
LP		 1158
1159 assert(s);
1160 assert(fds);
1161 assert(n_fds);
1162
3e33402a
LP		 1163 if ((r = service_get_sockets(s, &set)) < 0)
1164 return r;
1165
47be870b 1166 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 1167 int *cfds;
1168 unsigned cn_fds;
1169
47be870b 1170 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1171 goto fail;
1172
1173 if (!cfds)
1174 continue;
1175
1176 if (!rfds) {
1177 rfds = cfds;
1178 rn_fds = cn_fds;
1179 } else {
1180 int *t;
1181
1182 if (!(t = new(int, rn_fds+cn_fds))) {
1183 free(cfds);
1184 r = -ENOMEM;
1185 goto fail;
1186 }
1187
1188 memcpy(t, rfds, rn_fds);
1189 memcpy(t+rn_fds, cfds, cn_fds);
1190 free(rfds);
1191 free(cfds);
1192
1193 rfds = t;
1194 rn_fds = rn_fds+cn_fds;
1195 }
1196 }
1197
1198 *fds = rfds;
1199 *n_fds = rn_fds;
3e33402a
LP		 1200
1201 set_free(set);
1202
44d8db9e
LP		 1203 return 0;
1204
1205fail:
3e33402a 1206 set_free(set);
44d8db9e 1207 free(rfds);
3e33402a 1208
44d8db9e
LP		 1209 return r;
1210}
1211
81a2b7ce
LP		 1212static int service_spawn(
1213 Service *s,
1214 ExecCommand *c,
1215 bool timeout,
1216 bool pass_fds,
1217 bool apply_permissions,
1218 bool apply_chroot,
1219 pid_t *_pid) {
1220
034c6ed7
LP		 1221 pid_t pid;
1222 int r;
44d8db9e
LP		 1223 int *fds = NULL;
1224 unsigned n_fds = 0;
9e2f7c11 1225 char **argv;
034c6ed7
LP		 1226
1227 assert(s);
1228 assert(c);
1229 assert(_pid);
1230
4f2d528d
LP		 1231 if (pass_fds) {
1232 if (s->socket_fd >= 0) {
1233 fds = &s->socket_fd;
1234 n_fds = 1;
1235 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
44d8db9e 1236 goto fail;
4f2d528d 1237 }
44d8db9e 1238
e558336f 1239 if (timeout && s->timeout_usec) {
acbb0225 1240 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1241 goto fail;
1242 } else
acbb0225 1243 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1244
9e2f7c11
LP		 1245 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1246 r = -ENOMEM;
1247 goto fail;
1248 }
1249
1250 r = exec_spawn(c,
1251 argv,
1252 &s->exec_context,
1253 fds, n_fds,
1137a57c 1254 s->meta.manager->environment,
9e2f7c11
LP		 1255 apply_permissions,
1256 apply_chroot,
1257 UNIT(s)->meta.manager->confirm_spawn,
1258 UNIT(s)->meta.cgroup_bondings,
1259 &pid);
1260
1261 strv_free(argv);
1262 if (r < 0)
034c6ed7
LP		 1263 goto fail;
1264
4f2d528d
LP		 1265 if (fds) {
1266 if (s->socket_fd >= 0)
1267 service_close_socket_fd(s);
1268 else
1269 free(fds);
1270 }
1271
87f0e418 1272 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1273 /* FIXME: we need to do something here */
1274 goto fail;
1275
1276 *_pid = pid;
1277
5cb5a6ff 1278 return 0;
034c6ed7
LP		 1279
1280fail:
44d8db9e
LP		 1281 free(fds);
1282
034c6ed7 1283 if (timeout)
acbb0225 1284 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1285
1286 return r;
1287}
1288
80876c20
LP		 1289static int main_pid_good(Service *s) {
1290 assert(s);
1291
1292 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1293 * don't know */
1294
1295 /* If we know the pid file, then lets just check if it is
1296 * still valid */
1297 if (s->main_pid_known)
1298 return s->main_pid > 0;
1299
1300 /* We don't know the pid */
1301 return -EAGAIN;
1302}
1303
1304static int control_pid_good(Service *s) {
1305 assert(s);
1306
1307 return s->control_pid > 0;
1308}
1309
1310static int cgroup_good(Service *s) {
1311 int r;
1312
1313 assert(s);
1314
1315 if (s->valid_no_process)
1316 return -EAGAIN;
1317
1318 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1319 return r;
1320
1321 return !r;
1322}
1323
034c6ed7
LP		 1324static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1325 int r;
1326 assert(s);
1327
1328 if (!success)
1329 s->failure = true;
1330
1331 if (allow_restart &&
3a762661 1332 s->allow_restart &&
034c6ed7
LP		 1333 (s->restart == SERVICE_RESTART_ALWAYS ||
1334 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1335
acbb0225 1336 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1337 goto fail;
1338
1339 service_set_state(s, SERVICE_AUTO_RESTART);
1340 } else
1341 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1342
1343 return;
1344
1345fail:
9e2f7c11 1346 log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1347 service_enter_dead(s, false, false);
1348}
1349
1350static void service_enter_signal(Service *s, ServiceState state, bool success);
1351
1352static void service_enter_stop_post(Service *s, bool success) {
1353 int r;
1354 assert(s);
1355
1356 if (!success)
1357 s->failure = true;
1358
5e94833f
LP		 1359 service_unwatch_control_pid(s);
1360
a16e1123 1361 s->control_command_id = SERVICE_EXEC_STOP_POST;
80876c20 1362 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
81a2b7ce
LP		 1363 if ((r = service_spawn(s,
1364 s->control_command,
1365 true,
1366 false,
1367 !s->permissions_start_only,
1368 !s->root_directory_start_only,
1369 &s->control_pid)) < 0)
034c6ed7
LP		 1370 goto fail;
1371
d6ea93e3 1372
80876c20
LP		 1373 service_set_state(s, SERVICE_STOP_POST);
1374 } else
1375 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
034c6ed7
LP		 1376
1377 return;
1378
1379fail:
7020e8be 1380 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1381 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1382}
1383
1384static void service_enter_signal(Service *s, ServiceState state, bool success) {
1385 int r;
1386 bool sent = false;
1387
1388 assert(s);
1389
1390 if (!success)
1391 s->failure = true;
1392
80876c20
LP		 1393 if (s->kill_mode != KILL_NONE) {
1394 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
034c6ed7 1395
50159e6a 1396 if (s->kill_mode == KILL_CONTROL_GROUP) {
034c6ed7 1397
50159e6a
LP		 1398 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1399 if (r != -EAGAIN && r != -ESRCH)
1400 goto fail;
1401 } else
034c6ed7
LP		 1402 sent = true;
1403 }
1404
50159e6a
LP		 1405 if (!sent) {
1406 r = 0;
80876c20 1407
50159e6a
LP		 1408 if (s->main_pid > 0) {
1409 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1410 r = -errno;
1411 else
1412 sent = true;
1413 }
1414
1415 if (s->control_pid > 0) {
1416 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1417 r = -errno;
1418 else
1419 sent = true;
1420 }
1421
1422 if (r < 0)
1423 goto fail;
1424 }
d6ea93e3 1425 }
034c6ed7 1426
e93bc5a6 1427 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
e558336f
LP		 1428 if (s->timeout_usec > 0)
1429 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1430 goto fail;
d6ea93e3 1431
80876c20
LP		 1432 service_set_state(s, state);
1433 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1434 service_enter_stop_post(s, true);
1435 else
034c6ed7
LP		 1436 service_enter_dead(s, true, true);
1437
1438 return;
1439
1440fail:
9e2f7c11 1441 log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7 1442
80876c20 1443 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
034c6ed7
LP		 1444 service_enter_stop_post(s, false);
1445 else
1446 service_enter_dead(s, false, true);
1447}
1448
1449static void service_enter_stop(Service *s, bool success) {
1450 int r;
1451 assert(s);
1452
1453 if (!success)
1454 s->failure = true;
1455
5e94833f
LP		 1456 service_unwatch_control_pid(s);
1457
a16e1123 1458 s->control_command_id = SERVICE_EXEC_STOP;
80876c20 1459 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
81a2b7ce
LP		 1460 if ((r = service_spawn(s,
1461 s->control_command,
1462 true,
1463 false,
1464 !s->permissions_start_only,
1465 !s->root_directory_start_only,
1466 &s->control_pid)) < 0)
034c6ed7
LP		 1467 goto fail;
1468
80876c20
LP		 1469 service_set_state(s, SERVICE_STOP);
1470 } else
034c6ed7
LP		 1471 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1472
1473 return;
1474
1475fail:
7020e8be 1476 log_warning("%s failed to run 'stop' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1477 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1478}
1479
80876c20
LP		 1480static void service_enter_running(Service *s, bool success) {
1481 assert(s);
1482
1483 if (!success)
1484 s->failure = true;
1485
05e343b7
LP		 1486 if (main_pid_good(s) != 0 &&
1487 cgroup_good(s) != 0 &&
1488 (s->bus_name_good || s->type != SERVICE_DBUS))
80876c20
LP		 1489 service_set_state(s, SERVICE_RUNNING);
1490 else if (s->valid_no_process)
1491 service_set_state(s, SERVICE_EXITED);
1492 else
1493 service_enter_stop(s, true);
1494}
1495
034c6ed7
LP		 1496static void service_enter_start_post(Service *s) {
1497 int r;
1498 assert(s);
1499
5e94833f
LP		 1500 service_unwatch_control_pid(s);
1501
a16e1123 1502 s->control_command_id = SERVICE_EXEC_START_POST;
80876c20 1503 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
81a2b7ce
LP		 1504 if ((r = service_spawn(s,
1505 s->control_command,
1506 true,
1507 false,
1508 !s->permissions_start_only,
1509 !s->root_directory_start_only,
1510 &s->control_pid)) < 0)
034c6ed7
LP		 1511 goto fail;
1512
d6ea93e3 1513
80876c20
LP		 1514 service_set_state(s, SERVICE_START_POST);
1515 } else
1516 service_enter_running(s, true);
034c6ed7
LP		 1517
1518 return;
1519
1520fail:
7020e8be 1521 log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1522 service_enter_stop(s, false);
1523}
1524
1525static void service_enter_start(Service *s) {
1526 pid_t pid;
1527 int r;
1528
1529 assert(s);
1530
1531 assert(s->exec_command[SERVICE_EXEC_START]);
1532 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1533
80876c20
LP		 1534 if (s->type == SERVICE_FORKING)
1535 service_unwatch_control_pid(s);
1536 else
1537 service_unwatch_main_pid(s);
1538
81a2b7ce
LP		 1539 if ((r = service_spawn(s,
1540 s->exec_command[SERVICE_EXEC_START],
05e343b7 1541 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS,
81a2b7ce
LP		 1542 true,
1543 true,
1544 true,
1545 &pid)) < 0)
034c6ed7
LP		 1546 goto fail;
1547
1548 if (s->type == SERVICE_SIMPLE) {
1549 /* For simple services we immediately start
1550 * the START_POST binaries. */
1551
1552 s->main_pid = pid;
1553 s->main_pid_known = true;
80876c20 1554
034c6ed7
LP		 1555 service_enter_start_post(s);
1556
1557 } else if (s->type == SERVICE_FORKING) {
1558
1559 /* For forking services we wait until the start
1560 * process exited. */
1561
1562 s->control_pid = pid;
80876c20 1563
a16e1123 1564 s->control_command_id = SERVICE_EXEC_START;
034c6ed7 1565 s->control_command = s->exec_command[SERVICE_EXEC_START];
80876c20
LP		 1566 service_set_state(s, SERVICE_START);
1567
05e343b7
LP		 1568 } else if (s->type == SERVICE_FINISH ||
1569 s->type == SERVICE_DBUS) {
7d55e835
LP		 1570
1571 /* For finishing services we wait until the start
1572 * process exited, too, but it is our main process. */
1573
05e343b7
LP		 1574 /* For D-Bus services we know the main pid right away,
1575 * but wait for the bus name to appear on the bus. */
1576
7d55e835 1577 s->main_pid = pid;
5e94833f 1578 s->main_pid_known = true;
80876c20 1579
80876c20 1580 service_set_state(s, SERVICE_START);
034c6ed7
LP		 1581 } else
1582 assert_not_reached("Unknown service type");
1583
1584 return;
1585
1586fail:
7020e8be 1587 log_warning("%s failed to run 'start' task: %s", UNIT(s)->meta.id, strerror(-r));
80876c20 1588 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 1589}
1590
1591static void service_enter_start_pre(Service *s) {
1592 int r;
1593
1594 assert(s);
1595
5e94833f
LP		 1596 service_unwatch_control_pid(s);
1597
a16e1123 1598 s->control_command_id = SERVICE_EXEC_START_PRE;
80876c20 1599 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
81a2b7ce
LP		 1600 if ((r = service_spawn(s,
1601 s->control_command,
1602 true,
1603 false,
1604 !s->permissions_start_only,
1605 !s->root_directory_start_only,
1606 &s->control_pid)) < 0)
034c6ed7
LP		 1607 goto fail;
1608
80876c20
LP		 1609 service_set_state(s, SERVICE_START_PRE);
1610 } else
034c6ed7
LP		 1611 service_enter_start(s);
1612
1613 return;
1614
1615fail:
7020e8be 1616 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1617 service_enter_dead(s, false, true);
1618}
1619
1620static void service_enter_restart(Service *s) {
1621 int r;
1622 assert(s);
1623
9ea9a0c8
LP		 1624 service_enter_dead(s, true, false);
1625
87f0e418 1626 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1627 goto fail;
1628
9e2f7c11 1629 log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
034c6ed7
LP		 1630 return;
1631
1632fail:
1633
9e2f7c11 1634 log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1635 service_enter_dead(s, false, false);
1636}
1637
1638static void service_enter_reload(Service *s) {
1639 int r;
1640
1641 assert(s);
1642
5e94833f
LP		 1643 service_unwatch_control_pid(s);
1644
a16e1123 1645 s->control_command_id = SERVICE_EXEC_RELOAD;
80876c20 1646 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
81a2b7ce
LP		 1647 if ((r = service_spawn(s,
1648 s->control_command,
1649 true,
1650 false,
1651 !s->permissions_start_only,
1652 !s->root_directory_start_only,
1653 &s->control_pid)) < 0)
034c6ed7
LP		 1654 goto fail;
1655
80876c20
LP		 1656 service_set_state(s, SERVICE_RELOAD);
1657 } else
1658 service_enter_running(s, true);
034c6ed7
LP		 1659
1660 return;
1661
1662fail:
7020e8be 1663 log_warning("%s failed to run 'reload' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1664 service_enter_stop(s, false);
1665}
1666
1667static void service_run_next(Service *s, bool success) {
1668 int r;
1669
1670 assert(s);
1671 assert(s->control_command);
1672 assert(s->control_command->command_next);
1673
1674 if (!success)
1675 s->failure = true;
1676
1677 s->control_command = s->control_command->command_next;
1678
5e94833f
LP		 1679 service_unwatch_control_pid(s);
1680
81a2b7ce
LP		 1681 if ((r = service_spawn(s,
1682 s->control_command,
1683 true,
1684 false,
1685 !s->permissions_start_only,
1686 !s->root_directory_start_only,
1687 &s->control_pid)) < 0)
034c6ed7
LP		 1688 goto fail;
1689
1690 return;
1691
1692fail:
7020e8be 1693 log_warning("%s failed to run spawn next task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7 1694
80876c20
LP		 1695 if (s->state == SERVICE_START_PRE)
1696 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1697 else if (s->state == SERVICE_STOP)
1698 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
034c6ed7
LP		 1699 else if (s->state == SERVICE_STOP_POST)
1700 service_enter_dead(s, false, true);
1701 else
1702 service_enter_stop(s, false);
5cb5a6ff
LP		 1703}
1704
87f0e418
LP		 1705static int service_start(Unit *u) {
1706 Service *s = SERVICE(u);
5cb5a6ff
LP		 1707
1708 assert(s);
1709
034c6ed7
LP		 1710 /* We cannot fulfill this request right now, try again later
1711 * please! */
1712 if (s->state == SERVICE_STOP ||
1713 s->state == SERVICE_STOP_SIGTERM ||
1714 s->state == SERVICE_STOP_SIGKILL ||
1715 s->state == SERVICE_STOP_POST ||
1716 s->state == SERVICE_FINAL_SIGTERM ||
1717 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1718 return -EAGAIN;
1719
034c6ed7
LP		 1720 /* Already on it! */
1721 if (s->state == SERVICE_START_PRE ||
1722 s->state == SERVICE_START ||
1723 s->state == SERVICE_START_POST)
1724 return 0;
1725
1726 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1727
1e2e8133
LP		 1728 /* Make sure we don't enter a busy loop of some kind. */
1729 if (!ratelimit_test(&s->ratelimit)) {
9e2f7c11 1730 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
d5159713 1731 return -ECANCELED;
1e2e8133
LP		 1732 }
1733
034c6ed7
LP		 1734 s->failure = false;
1735 s->main_pid_known = false;
3a762661 1736 s->allow_restart = true;
034c6ed7
LP		 1737
1738 service_enter_start_pre(s);
1739 return 0;
5cb5a6ff
LP		 1740}
1741
87f0e418
LP		 1742static int service_stop(Unit *u) {
1743 Service *s = SERVICE(u);
5cb5a6ff
LP		 1744
1745 assert(s);
1746
e537352b 1747 /* Cannot do this now */
034c6ed7
LP		 1748 if (s->state == SERVICE_START_PRE ||
1749 s->state == SERVICE_START ||
1750 s->state == SERVICE_START_POST ||
1751 s->state == SERVICE_RELOAD)
1752 return -EAGAIN;
1753
e537352b
LP		 1754 /* Already on it */
1755 if (s->state == SERVICE_STOP ||
1756 s->state == SERVICE_STOP_SIGTERM ||
1757 s->state == SERVICE_STOP_SIGKILL ||
1758 s->state == SERVICE_STOP_POST ||
1759 s->state == SERVICE_FINAL_SIGTERM ||
1760 s->state == SERVICE_FINAL_SIGKILL)
1761 return 0;
1762
034c6ed7
LP		 1763 if (s->state == SERVICE_AUTO_RESTART) {
1764 service_set_state(s, SERVICE_DEAD);
1765 return 0;
1766 }
1767
80876c20 1768 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
5cb5a6ff 1769
3a762661
LP		 1770 /* This is a user request, so don't do restarts on this
1771 * shutdown. */
1772 s->allow_restart = false;
1773
034c6ed7 1774 service_enter_stop(s, true);
5cb5a6ff
LP		 1775 return 0;
1776}
1777
87f0e418
LP		 1778static int service_reload(Unit *u) {
1779 Service *s = SERVICE(u);
034c6ed7
LP		 1780
1781 assert(s);
1782
80876c20 1783 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
034c6ed7
LP		 1784
1785 service_enter_reload(s);
5cb5a6ff
LP		 1786 return 0;
1787}
1788
87f0e418
LP		 1789static bool service_can_reload(Unit *u) {
1790 Service *s = SERVICE(u);
034c6ed7
LP		 1791
1792 assert(s);
1793
1794 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1795}
1796
a16e1123
LP		 1797static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1798 Service *s = SERVICE(u);
1799
1800 assert(u);
1801 assert(f);
1802 assert(fds);
1803
1804 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1805 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1806
1807 if (s->control_pid > 0)
1808 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) (s->control_pid));
1809
1810 if (s->main_pid > 0)
1811 unit_serialize_item_format(u, f, "main-pid", "%u", (unsigned) (s->main_pid));
1812
1813 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1814
1815 /* There's a minor uncleanliness here: if there are multiple
1816 * commands attached here, we will start from the first one
1817 * again */
1818 if (s->control_command_id >= 0)
825636e5 1819 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
a16e1123
LP		 1820
1821 if (s->socket_fd >= 0) {
1822 int copy;
1823
1824 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1825 return copy;
1826
1827 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1828 }
1829
1830 return 0;
1831}
1832
1833static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1834 Service *s = SERVICE(u);
1835 int r;
1836
1837 assert(u);
1838 assert(key);
1839 assert(value);
1840 assert(fds);
1841
1842 if (streq(key, "state")) {
1843 ServiceState state;
1844
1845 if ((state = service_state_from_string(value)) < 0)
1846 log_debug("Failed to parse state value %s", value);
1847 else
1848 s->deserialized_state = state;
1849 } else if (streq(key, "failure")) {
1850 int b;
1851
1852 if ((b = parse_boolean(value)) < 0)
1853 log_debug("Failed to parse failure value %s", value);
1854 else
1855 s->failure = b || s->failure;
1856 } else if (streq(key, "control-pid")) {
1857 unsigned pid;
1858
1859 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1860 log_debug("Failed to parse control-pid value %s", value);
1861 else
1862 s->control_pid = (pid_t) pid;
1863 } else if (streq(key, "main-pid")) {
1864 unsigned pid;
1865
1866 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1867 log_debug("Failed to parse main-pid value %s", value);
1868 else
1869 s->main_pid = (pid_t) pid;
1870 } else if (streq(key, "main-pid-known")) {
1871 int b;
1872
1873 if ((b = parse_boolean(value)) < 0)
1874 log_debug("Failed to parse main-pid-known value %s", value);
1875 else
1876 s->main_pid_known = b;
1877 } else if (streq(key, "control-command")) {
1878 ServiceExecCommand id;
1879
1880 if ((id = service_exec_command_from_string(value)) < 0)
1881 log_debug("Failed to parse exec-command value %s", value);
1882 else {
1883 s->control_command_id = id;
1884 s->control_command = s->exec_command[id];
1885 }
1886 } else if (streq(key, "socket-fd")) {
1887 int fd;
1888
1889 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1890 log_debug("Failed to parse socket-fd value %s", value);
1891 else {
1892
1893 if (s->socket_fd >= 0)
1894 close_nointr_nofail(s->socket_fd);
1895 s->socket_fd = fdset_remove(fds, fd);
1896 }
1897 } else
1898 log_debug("Unknown serialization key '%s'", key);
1899
1900 return 0;
1901}
1902
87f0e418
LP		 1903static UnitActiveState service_active_state(Unit *u) {
1904 assert(u);
5cb5a6ff 1905
acbb0225 1906 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1907}
1908
10a94420
LP		 1909static const char *service_sub_state_to_string(Unit *u) {
1910 assert(u);
1911
1912 return service_state_to_string(SERVICE(u)->state);
1913}
1914
701cc384
LP		 1915static bool service_check_gc(Unit *u) {
1916 Service *s = SERVICE(u);
1917
1918 assert(s);
1919
1920 return !!s->sysv_path;
1921}
1922
1923static bool service_check_snapshot(Unit *u) {
1924 Service *s = SERVICE(u);
1925
1926 assert(s);
1927
1928 return !s->got_socket_fd;
1929}
1930
87f0e418
LP		 1931static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1932 Service *s = SERVICE(u);
034c6ed7 1933 bool success;
5cb5a6ff
LP		 1934
1935 assert(s);
034c6ed7
LP		 1936 assert(pid >= 0);
1937
cb8a8f78 1938 success = is_clean_exit(code, status);
034c6ed7
LP		 1939 s->failure = s->failure || !success;
1940
1941 if (s->main_pid == pid) {
1942
1943 exec_status_fill(&s->main_exec_status, pid, code, status);
1944 s->main_pid = 0;
1945
7d55e835 1946 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
034c6ed7
LP		 1947 assert(s->exec_command[SERVICE_EXEC_START]);
1948 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1949 }
1950
9e2f7c11 1951 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 1952
1953 /* The service exited, so the service is officially
1954 * gone. */
1955
1956 switch (s->state) {
1957
1958 case SERVICE_START_POST:
1959 case SERVICE_RELOAD:
1960 case SERVICE_STOP:
1961 /* Need to wait until the operation is
1962 * done */
1963 break;
1964
7d55e835 1965 case SERVICE_START:
c4653a4d
LP		 1966 if (s->type == SERVICE_FINISH) {
1967 /* This was our main goal, so let's go on */
1968 if (success)
1969 service_enter_start_post(s);
1970 else
1971 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1972 break;
1973 } else {
1974 assert(s->type == SERVICE_DBUS);
7d55e835 1975
c4653a4d
LP		 1976 /* Fall through */
1977 }
7d55e835 1978
034c6ed7 1979 case SERVICE_RUNNING:
80876c20 1980 service_enter_running(s, success);
034c6ed7
LP		 1981 break;
1982
1983 case SERVICE_STOP_SIGTERM:
1984 case SERVICE_STOP_SIGKILL:
1985
1986 if (!control_pid_good(s))
1987 service_enter_stop_post(s, success);
5cb5a6ff 1988
034c6ed7
LP		 1989 /* If there is still a control process, wait for that first */
1990 break;
5cb5a6ff 1991
034c6ed7
LP		 1992 default:
1993 assert_not_reached("Uh, main process died at wrong time.");
1994 }
5cb5a6ff 1995
034c6ed7 1996 } else if (s->control_pid == pid) {
034c6ed7 1997
a16e1123
LP		 1998 if (s->control_command)
1999 exec_status_fill(&s->control_command->exec_status, pid, code, status);
2000
034c6ed7
LP		 2001 s->control_pid = 0;
2002
9e2f7c11 2003 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 2004
2005 /* If we are shutting things down anyway we
2006 * don't care about failing commands. */
2007
a16e1123 2008 if (s->control_command && s->control_command->command_next && success) {
034c6ed7
LP		 2009
2010 /* There is another command to *
2011 * execute, so let's do that. */
2012
9e2f7c11 2013 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
034c6ed7
LP		 2014 service_run_next(s, success);
2015
80876c20 2016 } else {
034c6ed7
LP		 2017 /* No further commands for this step, so let's
2018 * figure out what to do next */
2019
a16e1123
LP		 2020 s->control_command = NULL;
2021 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2022
9e2f7c11 2023 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
bd982a8b 2024
034c6ed7
LP		 2025 switch (s->state) {
2026
2027 case SERVICE_START_PRE:
2028 if (success)
2029 service_enter_start(s);
2030 else
80876c20 2031 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2032 break;
2033
2034 case SERVICE_START:
2035 assert(s->type == SERVICE_FORKING);
2036
2037 /* Let's try to load the pid
2038 * file here if we can. We
2039 * ignore the return value,
2040 * since the PID file might
2041 * actually be created by a
2042 * START_POST script */
2043
2044 if (success) {
2045 if (s->pid_file)
2046 service_load_pid_file(s);
2047
2048 service_enter_start_post(s);
2049 } else
80876c20 2050 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2051
2052 break;
2053
2054 case SERVICE_START_POST:
2055 if (success && s->pid_file && !s->main_pid_known) {
2056 int r;
2057
2058 /* Hmm, let's see if we can
2059 * load the pid now after the
2060 * start-post scripts got
2061 * executed. */
2062
2063 if ((r = service_load_pid_file(s)) < 0)
9e2f7c11 2064 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
034c6ed7
LP		 2065 }
2066
2067 /* Fall through */
2068
2069 case SERVICE_RELOAD:
80876c20
LP		 2070 if (success)
2071 service_enter_running(s, true);
2072 else
034c6ed7
LP		 2073 service_enter_stop(s, false);
2074
2075 break;
2076
2077 case SERVICE_STOP:
80876c20 2078 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
034c6ed7
LP		 2079 break;
2080
2081 case SERVICE_STOP_SIGTERM:
2082 case SERVICE_STOP_SIGKILL:
2083 if (main_pid_good(s) <= 0)
2084 service_enter_stop_post(s, success);
2085
2086 /* If there is still a service
2087 * process around, wait until
2088 * that one quit, too */
2089 break;
2090
2091 case SERVICE_STOP_POST:
2092 case SERVICE_FINAL_SIGTERM:
2093 case SERVICE_FINAL_SIGKILL:
2094 service_enter_dead(s, success, true);
2095 break;
2096
2097 default:
2098 assert_not_reached("Uh, control process died at wrong time.");
2099 }
2100 }
2101 } else
2102 assert_not_reached("Got SIGCHLD for unkown PID");
2103}
2104
acbb0225 2105static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 2106 Service *s = SERVICE(u);
034c6ed7
LP		 2107
2108 assert(s);
2109 assert(elapsed == 1);
2110
acbb0225 2111 assert(w == &s->timer_watch);
034c6ed7
LP		 2112
2113 switch (s->state) {
2114
2115 case SERVICE_START_PRE:
2116 case SERVICE_START:
9e2f7c11 2117 log_warning("%s operation timed out. Terminating.", u->meta.id);
80876c20
LP		 2118 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2119 break;
2120
034c6ed7
LP		 2121 case SERVICE_START_POST:
2122 case SERVICE_RELOAD:
9e2f7c11 2123 log_warning("%s operation timed out. Stopping.", u->meta.id);
034c6ed7
LP		 2124 service_enter_stop(s, false);
2125 break;
2126
2127 case SERVICE_STOP:
9e2f7c11 2128 log_warning("%s stopping timed out. Terminating.", u->meta.id);
034c6ed7
LP		 2129 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2130 break;
2131
2132 case SERVICE_STOP_SIGTERM:
9e2f7c11 2133 log_warning("%s stopping timed out. Killing.", u->meta.id);
034c6ed7
LP		 2134 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2135 break;
2136
2137 case SERVICE_STOP_SIGKILL:
2138 /* Uh, wie sent a SIGKILL and it is still not gone?
2139 * Must be something we cannot kill, so let's just be
2140 * weirded out and continue */
2141
9e2f7c11 2142 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
034c6ed7
LP		 2143 service_enter_stop_post(s, false);
2144 break;
2145
2146 case SERVICE_STOP_POST:
9e2f7c11 2147 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
034c6ed7
LP		 2148 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2149 break;
2150
2151 case SERVICE_FINAL_SIGTERM:
9e2f7c11 2152 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
034c6ed7
LP		 2153 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2154 break;
2155
2156 case SERVICE_FINAL_SIGKILL:
9e2f7c11 2157 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id);
034c6ed7
LP		 2158 service_enter_dead(s, false, true);
2159 break;
2160
2161 case SERVICE_AUTO_RESTART:
9e2f7c11 2162 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
034c6ed7
LP		 2163 service_enter_restart(s);
2164 break;
2165
2166 default:
2167 assert_not_reached("Timeout at wrong time.");
2168 }
5cb5a6ff
LP		 2169}
2170
8e274523
LP		 2171static void service_cgroup_notify_event(Unit *u) {
2172 Service *s = SERVICE(u);
2173
2174 assert(u);
2175
9e2f7c11 2176 log_debug("%s: cgroup is empty", u->meta.id);
8e274523
LP		 2177
2178 switch (s->state) {
2179
2180 /* Waiting for SIGCHLD is usually more interesting,
2181 * because it includes return codes/signals. Which is
2182 * why we ignore the cgroup events for most cases,
2183 * except when we don't know pid which to expect the
2184 * SIGCHLD for. */
2185
2186 case SERVICE_RUNNING:
80876c20 2187 service_enter_running(s, true);
8e274523
LP		 2188 break;
2189
2190 default:
2191 ;
2192 }
2193}
2194
2c4104f0 2195static int service_enumerate(Manager *m) {
2c4104f0
LP		 2196 char **p;
2197 unsigned i;
2198 DIR *d = NULL;
2199 char *path = NULL, *fpath = NULL, *name = NULL;
2200 int r;
2201
2202 assert(m);
2203
84e3543e 2204 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
09cd1ab1 2205 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2c4104f0
LP		 2206 struct dirent *de;
2207
2208 free(path);
2209 path = NULL;
09cd1ab1 2210 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2c4104f0
LP		 2211 r = -ENOMEM;
2212 goto finish;
2213 }
2214
2215 if (d)
2216 closedir(d);
2217
2218 if (!(d = opendir(path))) {
2219 if (errno != ENOENT)
2220 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2221
2222 continue;
2223 }
2224
2225 while ((de = readdir(d))) {
6542952f 2226 Unit *service;
db06e3b6 2227 int a, b;
2c4104f0
LP		 2228
2229 if (ignore_file(de->d_name))
2230 continue;
2231
2232 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2233 continue;
2234
2235 if (strlen(de->d_name) < 4)
2236 continue;
2237
db06e3b6
LP		 2238 a = undecchar(de->d_name[1]);
2239 b = undecchar(de->d_name[2]);
2240
2241 if (a < 0 || b < 0)
2242 continue;
2243
2c4104f0
LP		 2244 free(fpath);
2245 fpath = NULL;
09cd1ab1 2246 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2c4104f0
LP		 2247 r = -ENOMEM;
2248 goto finish;
2249 }
2250
2251 if (access(fpath, X_OK) < 0) {
2252
2253 if (errno != ENOENT)
2254 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2255
2256 continue;
2257 }
2258
2259 free(name);
b7ccee3c 2260 if (!(name = sysv_translate_name(de->d_name + 3))) {
2c4104f0
LP		 2261 r = -ENOMEM;
2262 goto finish;
2263 }
2264
fbe9f3a9
LP		 2265 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0) {
2266 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2267 continue;
2268 }
2c4104f0 2269
09cd1ab1 2270 if (de->d_name[0] == 'S' &&
fc5df99e 2271 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT))
fbe9f3a9
LP		 2272 SERVICE(service)->sysv_start_priority =
2273 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
db06e3b6
LP		 2274
2275 manager_dispatch_load_queue(m);
2276 service = unit_follow_merge(service);
2277
2c4104f0 2278 if (de->d_name[0] == 'S') {
6542952f
LP		 2279 Unit *runlevel_target;
2280
09cd1ab1 2281 if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
6542952f
LP		 2282 goto finish;
2283
2284 if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2c4104f0
LP		 2285 goto finish;
2286
a0fcc5f6 2287 if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2c4104f0 2288 goto finish;
23a177ef 2289
fc5df99e
LP		 2290 } else if (de->d_name[0] == 'K' &&
2291 (rcnd_table[i].type == RUNLEVEL_DOWN ||
2292 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
6542952f
LP		 2293 Unit *shutdown_target;
2294
23a177ef
LP		 2295 /* We honour K links only for
2296 * halt/reboot. For the normal
2297 * runlevels we assume the
2298 * stop jobs will be
2299 * implicitly added by the
6542952f
LP		 2300 * core logic. Also, we don't
2301 * really distuingish here
2302 * between the runlevels 0 and
2303 * 6 and just add them to the
fc5df99e
LP		 2304 * special shutdown target. On
2305 * SUSE the boot.d/ runlevel
2306 * is also used for shutdown,
2307 * so we add links for that
2308 * too to the shutdown
2309 * target.*/
6542952f
LP		 2310
2311 if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2312 goto finish;
23a177ef 2313
a0fcc5f6 2314 if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2c4104f0
LP		 2315 goto finish;
2316
a0fcc5f6 2317 if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2c4104f0
LP		 2318 goto finish;
2319 }
2320 }
2321 }
2322
2323 r = 0;
2324
2325finish:
2326 free(path);
2327 free(fpath);
2328 free(name);
fbe9f3a9
LP		 2329
2330 if (d)
2331 closedir(d);
2c4104f0
LP		 2332
2333 return r;
2334}
2335
05e343b7
LP		 2336static void service_bus_name_owner_change(
2337 Unit *u,
2338 const char *name,
2339 const char *old_owner,
2340 const char *new_owner) {
2341
2342 Service *s = SERVICE(u);
2343
2344 assert(s);
2345 assert(name);
2346
2347 assert(streq(s->bus_name, name));
2348 assert(old_owner || new_owner);
2349
2350 if (old_owner && new_owner)
2351 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2352 else if (old_owner)
2353 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2354 else
2355 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2356
2357 s->bus_name_good = !!new_owner;
2358
2359 if (s->type == SERVICE_DBUS) {
2360
2361 /* service_enter_running() will figure out what to
2362 * do */
2363 if (s->state == SERVICE_RUNNING)
2364 service_enter_running(s, true);
2365 else if (s->state == SERVICE_START && new_owner)
2366 service_enter_start_post(s);
2367
2368 } else if (new_owner &&
2369 s->main_pid <= 0 &&
2370 (s->state == SERVICE_START ||
2371 s->state == SERVICE_START_POST ||
2372 s->state == SERVICE_RUNNING ||
2373 s->state == SERVICE_RELOAD)) {
2374
2375 /* Try to acquire PID from bus service */
2376 log_debug("Trying to acquire PID from D-Bus name...");
2377
2378 bus_query_pid(u->meta.manager, name);
2379 }
2380}
2381
2382static void service_bus_query_pid_done(
2383 Unit *u,
2384 const char *name,
2385 pid_t pid) {
2386
2387 Service *s = SERVICE(u);
2388
2389 assert(s);
2390 assert(name);
2391
2392 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2393
2394 if (s->main_pid <= 0 &&
2395 (s->state == SERVICE_START ||
2396 s->state == SERVICE_START_POST ||
2397 s->state == SERVICE_RUNNING ||
2398 s->state == SERVICE_RELOAD))
2399 s->main_pid = pid;
2400}
2401
4f2d528d
LP		 2402int service_set_socket_fd(Service *s, int fd) {
2403 assert(s);
2404 assert(fd >= 0);
2405
2406 /* This is called by the socket code when instantiating a new
2407 * service for a stream socket and the socket needs to be
2408 * configured. */
2409
2410 if (UNIT(s)->meta.load_state != UNIT_LOADED)
2411 return -EINVAL;
2412
2413 if (s->socket_fd >= 0)
2414 return -EBUSY;
2415
2416 if (s->state != SERVICE_DEAD)
2417 return -EAGAIN;
2418
2419 s->socket_fd = fd;
701cc384 2420 s->got_socket_fd = true;
4f2d528d
LP		 2421 return 0;
2422}
2423
94f04347
LP		 2424static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2425 [SERVICE_DEAD] = "dead",
2426 [SERVICE_START_PRE] = "start-pre",
2427 [SERVICE_START] = "start",
2428 [SERVICE_START_POST] = "start-post",
2429 [SERVICE_RUNNING] = "running",
80876c20 2430 [SERVICE_EXITED] = "exited",
94f04347
LP		 2431 [SERVICE_RELOAD] = "reload",
2432 [SERVICE_STOP] = "stop",
2433 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2434 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2435 [SERVICE_STOP_POST] = "stop-post",
2436 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2437 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2438 [SERVICE_MAINTAINANCE] = "maintainance",
2439 [SERVICE_AUTO_RESTART] = "auto-restart",
2440};
2441
2442DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2443
2444static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2445 [SERVICE_ONCE] = "once",
2446 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
40531a55 2447 [SERVICE_RESTART_ALWAYS] = "restart-always",
94f04347
LP		 2448};
2449
2450DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2451
2452static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2453 [SERVICE_FORKING] = "forking",
2454 [SERVICE_SIMPLE] = "simple",
05e343b7
LP		 2455 [SERVICE_FINISH] = "finish",
2456 [SERVICE_DBUS] = "dbus"
94f04347
LP		 2457};
2458
2459DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2460
e537352b 2461static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
94f04347
LP		 2462 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2463 [SERVICE_EXEC_START] = "ExecStart",
2464 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2465 [SERVICE_EXEC_RELOAD] = "ExecReload",
2466 [SERVICE_EXEC_STOP] = "ExecStop",
2467 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2468};
2469
2470DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2471
87f0e418 2472const UnitVTable service_vtable = {
5cb5a6ff
LP		 2473 .suffix = ".service",
2474
034c6ed7
LP		 2475 .init = service_init,
2476 .done = service_done,
a16e1123
LP		 2477 .load = service_load,
2478
2479 .coldplug = service_coldplug,
034c6ed7 2480
5cb5a6ff
LP		 2481 .dump = service_dump,
2482
2483 .start = service_start,
2484 .stop = service_stop,
2485 .reload = service_reload,
2486
034c6ed7
LP		 2487 .can_reload = service_can_reload,
2488
a16e1123
LP		 2489 .serialize = service_serialize,
2490 .deserialize_item = service_deserialize_item,
2491
5cb5a6ff 2492 .active_state = service_active_state,
10a94420 2493 .sub_state_to_string = service_sub_state_to_string,
5cb5a6ff 2494
701cc384
LP		 2495 .check_gc = service_check_gc,
2496 .check_snapshot = service_check_snapshot,
2497
034c6ed7
LP		 2498 .sigchld_event = service_sigchld_event,
2499 .timer_event = service_timer_event,
2c4104f0 2500
8e274523
LP		 2501 .cgroup_notify_empty = service_cgroup_notify_event,
2502
05e343b7
LP		 2503 .bus_name_owner_change = service_bus_name_owner_change,
2504 .bus_query_pid_done = service_bus_query_pid_done,
2505
4139c1b2
LP		 2506 .bus_message_handler = bus_service_message_handler,
2507
2c4104f0 2508 .enumerate = service_enumerate
5cb5a6ff 2509};
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