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load-fragment: add support for overriding argv[0] in parsed command lines
[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,
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
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[] = {
194 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
195 "$network", SPECIAL_NETWORK_TARGET,
196 "$named", SPECIAL_NSS_LOOKUP_TARGET,
197 "$portmap", SPECIAL_RPCBIND_TARGET,
198 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
199 "$syslog", SPECIAL_SYSLOG_TARGET,
200 "$time", SPECIAL_RTC_SET_TARGET
201 };
202
203 unsigned i;
204 char *r;
205
206 for (i = 0; i < ELEMENTSOF(table); i += 2)
207 if (streq(table[i], name)) {
208 if (!(r = strdup(table[i+1])))
209 return -ENOMEM;
210
211 goto finish;
212 }
213
214 if (*name == '$')
215 return 0;
216
b7ccee3c 217 if (!(r = sysv_translate_name(name)))
2c4104f0
LP		 218 return -ENOMEM;
219
220finish:
221
222 if (_r)
223 *_r = r;
224
225 return 1;
226}
227
56d748b4 228static int sysv_fix_order(Service *s) {
2c4104f0
LP		 229 Meta *other;
230 int r;
231
232 assert(s);
233
234 if (s->sysv_start_priority < 0)
235 return 0;
236
23a177ef
LP		 237 /* For each pair of services where at least one lacks a LSB
238 * header, we use the start priority value to order things. */
2c4104f0
LP		 239
240 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
241 Service *t;
242 UnitDependency d;
243
244 t = (Service*) other;
245
246 if (s == t)
247 continue;
248
249 if (t->sysv_start_priority < 0)
250 continue;
251
51a1a79d
LP		 252 /* If both units have modern headers we don't care
253 * about the priorities */
254 if ((!s->sysv_path || s->sysv_has_lsb) &&
255 (!t->sysv_path || t->sysv_has_lsb))
23a177ef
LP		 256 continue;
257
2c4104f0
LP		 258 if (t->sysv_start_priority < s->sysv_start_priority)
259 d = UNIT_AFTER;
260 else if (t->sysv_start_priority > s->sysv_start_priority)
261 d = UNIT_BEFORE;
262 else
263 continue;
264
265 /* FIXME: Maybe we should compare the name here lexicographically? */
266
701cc384 267 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
2c4104f0
LP		 268 return r;
269 }
270
271 return 0;
272}
273
274static ExecCommand *exec_command_new(const char *path, const char *arg1) {
275 ExecCommand *c;
276
277 if (!(c = new0(ExecCommand, 1)))
278 return NULL;
279
280 if (!(c->path = strdup(path))) {
281 free(c);
282 return NULL;
283 }
284
285 if (!(c->argv = strv_new(path, arg1, NULL))) {
286 free(c->path);
287 free(c);
288 return NULL;
289 }
290
291 return c;
292}
293
294static int sysv_exec_commands(Service *s) {
295 ExecCommand *c;
296
297 assert(s);
298 assert(s->sysv_path);
299
300 if (!(c = exec_command_new(s->sysv_path, "start")))
301 return -ENOMEM;
302 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
303
304 if (!(c = exec_command_new(s->sysv_path, "stop")))
305 return -ENOMEM;
306 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
307
308 if (!(c = exec_command_new(s->sysv_path, "reload")))
309 return -ENOMEM;
310 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
311
312 return 0;
313}
314
e537352b 315static int service_load_sysv_path(Service *s, const char *path) {
2c4104f0
LP		 316 FILE *f;
317 Unit *u;
318 unsigned line = 0;
319 int r;
320 enum {
321 NORMAL,
322 DESCRIPTION,
323 LSB,
324 LSB_DESCRIPTION
325 } state = NORMAL;
23a177ef
LP		 326
327 assert(s);
328 assert(path);
2c4104f0
LP		 329
330 u = UNIT(s);
331
332 if (!(f = fopen(path, "re"))) {
333 r = errno == ENOENT ? 0 : -errno;
334 goto finish;
335 }
336
337 s->type = SERVICE_FORKING;
338 s->restart = SERVICE_ONCE;
339
340 free(s->sysv_path);
341 if (!(s->sysv_path = strdup(path))) {
342 r = -ENOMEM;
343 goto finish;
344 }
345
346 while (!feof(f)) {
347 char l[LINE_MAX], *t;
348
349 if (!fgets(l, sizeof(l), f)) {
350 if (feof(f))
351 break;
352
353 r = -errno;
354 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
355 goto finish;
356 }
357
358 line++;
359
360 t = strstrip(l);
361 if (*t != '#')
362 continue;
363
364 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
365 state = LSB;
23a177ef 366 s->sysv_has_lsb = true;
2c4104f0
LP		 367 continue;
368 }
369
370 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
371 state = NORMAL;
372 continue;
373 }
374
375 t++;
376 t += strspn(t, WHITESPACE);
377
378 if (state == NORMAL) {
379
380 /* Try to parse Red Hat style chkconfig headers */
381
382 if (startswith(t, "chkconfig:")) {
383 int start_priority;
8309400a 384 char runlevels[16], *k;
2c4104f0
LP		 385
386 state = NORMAL;
387
8309400a
LP		 388 if (sscanf(t+10, "%15s %i %*i",
389 runlevels,
390 &start_priority) != 2) {
2c4104f0
LP		 391
392 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
393 continue;
394 }
395
fbe9f3a9
LP		 396 /* A start priority gathered from the
397 * symlink farms is preferred over the
398 * data from the LSB header. */
8309400a 399 if (start_priority < 0 || start_priority > 99)
2c4104f0 400 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
db06e3b6 401 else if (s->sysv_start_priority < 0)
8309400a
LP		 402 s->sysv_start_priority = start_priority;
403
404 char_array_0(runlevels);
405 k = delete_chars(runlevels, WHITESPACE "-");
406
407 if (k[0]) {
408 char *d;
409
410 if (!(d = strdup(k))) {
411 r = -ENOMEM;
412 goto finish;
413 }
414
415 free(s->sysv_runlevels);
416 s->sysv_runlevels = d;
2c4104f0
LP		 417 }
418
2c4104f0
LP		 419 } else if (startswith(t, "description:")) {
420
421 size_t k = strlen(t);
422 char *d;
423
424 if (t[k-1] == '\\') {
425 state = DESCRIPTION;
426 t[k-1] = 0;
427 }
428
429 if (!(d = strdup(strstrip(t+12)))) {
430 r = -ENOMEM;
431 goto finish;
432 }
433
434 free(u->meta.description);
435 u->meta.description = d;
436
437 } else if (startswith(t, "pidfile:")) {
438
439 char *fn;
440
441 state = NORMAL;
442
443 fn = strstrip(t+8);
444 if (!path_is_absolute(fn)) {
445 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
446 continue;
447 }
448
449 if (!(fn = strdup(fn))) {
450 r = -ENOMEM;
451 goto finish;
452 }
453
454 free(s->pid_file);
455 s->pid_file = fn;
456 }
457
458 } else if (state == DESCRIPTION) {
459
460 /* Try to parse Red Hat style description
461 * continuation */
462
463 size_t k = strlen(t);
464 char *d;
465
466 if (t[k-1] == '\\')
467 t[k-1] = 0;
468 else
469 state = NORMAL;
470
471 assert(u->meta.description);
472 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
473 r = -ENOMEM;
474 goto finish;
475 }
476
477 free(u->meta.description);
478 u->meta.description = d;
479
480 } else if (state == LSB || state == LSB_DESCRIPTION) {
481
482 if (startswith(t, "Provides:")) {
483 char *i, *w;
484 size_t z;
485
486 state = LSB;
487
488 FOREACH_WORD(w, z, t+9, i) {
489 char *n, *m;
490
491 if (!(n = strndup(w, z))) {
492 r = -ENOMEM;
493 goto finish;
494 }
495
b7ccee3c 496 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 497 free(n);
498
499 if (r < 0)
500 goto finish;
501
502 if (r == 0)
503 continue;
504
bd77d0fc
LP		 505 if (unit_name_to_type(m) == UNIT_SERVICE)
506 r = unit_add_name(u, m);
507 else {
701cc384
LP		 508 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL, true)) >= 0)
509 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
bd77d0fc
LP		 510 }
511
2c4104f0
LP		 512 free(m);
513
514 if (r < 0)
515 goto finish;
516 }
517
518 } else if (startswith(t, "Required-Start:") ||
519 startswith(t, "Should-Start:")) {
520 char *i, *w;
521 size_t z;
522
523 state = LSB;
524
525 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
526 char *n, *m;
527
528 if (!(n = strndup(w, z))) {
529 r = -ENOMEM;
530 goto finish;
531 }
532
b7ccee3c 533 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 534 free(n);
535
536 if (r < 0)
537 goto finish;
538
539 if (r == 0)
540 continue;
541
701cc384 542 r = unit_add_dependency_by_name(u, UNIT_AFTER, m, NULL, true);
2c4104f0
LP		 543 free(m);
544
545 if (r < 0)
546 goto finish;
547 }
8309400a
LP		 548 } else if (startswith(t, "Default-Start:")) {
549 char *k, *d;
550
551 state = LSB;
552
553 k = delete_chars(t+14, WHITESPACE "-");
554
555 if (k[0] != 0) {
556 if (!(d = strdup(k))) {
557 r = -ENOMEM;
558 goto finish;
559 }
560
561 free(s->sysv_runlevels);
562 s->sysv_runlevels = d;
563 }
2c4104f0
LP		 564
565 } else if (startswith(t, "Description:")) {
566 char *d;
567
568 state = LSB_DESCRIPTION;
569
570 if (!(d = strdup(strstrip(t+12)))) {
571 r = -ENOMEM;
572 goto finish;
573 }
574
575 free(u->meta.description);
576 u->meta.description = d;
577
8309400a
LP		 578 } else if (startswith(t, "Short-Description:") &&
579 !u->meta.description) {
2c4104f0
LP		 580 char *d;
581
582 /* We use the short description only
583 * if no long description is set. */
584
585 state = LSB;
586
587 if (!(d = strdup(strstrip(t+18)))) {
588 r = -ENOMEM;
589 goto finish;
590 }
591
2c4104f0
LP		 592 u->meta.description = d;
593
594 } else if (state == LSB_DESCRIPTION) {
595
596 if (startswith(l, "#\t") || startswith(l, "# ")) {
597 char *d;
598
599 assert(u->meta.description);
600 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
601 r = -ENOMEM;
602 goto finish;
603 }
604
605 free(u->meta.description);
606 u->meta.description = d;
607 } else
608 state = LSB;
609 }
610 }
611 }
612
2c4104f0
LP		 613 if ((r = sysv_exec_commands(s)) < 0)
614 goto finish;
615
09cd1ab1 616 if (!s->sysv_runlevels || chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
0bc824be
LP		 617 /* If there a runlevels configured for this service
618 * but none of the standard ones, then we assume this
619 * is some special kind of service (which might be
620 * needed for early boot) and don't create any links
621 * to it. */
622
701cc384
LP		 623 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0 ||
624 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
0bc824be 625 goto finish;
09cd1ab1
LP		 626
627 } else
628 /* Don't timeout special services during boot (like fsck) */
629 s->timeout_usec = 0;
0fd030be 630
80876c20
LP		 631 /* Special setting for all SysV services */
632 s->valid_no_process = true;
b29a8e58 633 s->kill_mode = KILL_PROCESS_GROUP;
80876c20 634
15ca554b
LP		 635 /* For SysV services log output should go to the console */
636 s->exec_context.std_input = EXEC_INPUT_NULL;
637 s->exec_context.std_output = EXEC_OUTPUT_TTY;
638 s->exec_context.std_error = EXEC_OUTPUT_TTY;
639
e537352b 640 u->meta.load_state = UNIT_LOADED;
23a177ef 641 r = 0;
2c4104f0
LP		 642
643finish:
644
645 if (f)
646 fclose(f);
647
648 return r;
649}
650
e537352b 651static int service_load_sysv_name(Service *s, const char *name) {
2c4104f0
LP		 652 char **p;
653
654 assert(s);
655 assert(name);
656
657 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
658 char *path;
659 int r;
660
661 if (asprintf(&path, "%s/%s", *p, name) < 0)
662 return -ENOMEM;
663
664 assert(endswith(path, ".service"));
665 path[strlen(path)-8] = 0;
666
e537352b 667 r = service_load_sysv_path(s, path);
fbe9f3a9
LP		 668
669 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
670 /* Try Debian style .sh source'able init scripts */
671 strcat(path, ".sh");
672 r = service_load_sysv_path(s, path);
673 }
674
2c4104f0
LP		 675 free(path);
676
fbe9f3a9
LP		 677 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
678 /* Try Suse style boot.xxxx init scripts */
679
680 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
681 return -ENOMEM;
682
683 path[strlen(path)-8] = 0;
684 r = service_load_sysv_path(s, path);
685 free(path);
686 }
687
23a177ef 688 if (r < 0)
2c4104f0 689 return r;
23a177ef 690
e537352b 691 if ((UNIT(s)->meta.load_state != UNIT_STUB))
23a177ef 692 break;
2c4104f0
LP		 693 }
694
695 return 0;
696}
697
e537352b 698static int service_load_sysv(Service *s) {
2c4104f0
LP		 699 const char *t;
700 Iterator i;
701 int r;
702
5cb5a6ff
LP		 703 assert(s);
704
705 /* Load service data from SysV init scripts, preferably with
706 * LSB headers ... */
707
2c4104f0
LP		 708 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
709 return 0;
710
9e2f7c11 711 if ((t = UNIT(s)->meta.id))
e537352b 712 if ((r = service_load_sysv_name(s, t)) < 0)
2c4104f0
LP		 713 return r;
714
e537352b 715 if (UNIT(s)->meta.load_state == UNIT_STUB)
23a177ef 716 SET_FOREACH(t, UNIT(s)->meta.names, i) {
9e2f7c11 717 if (t == UNIT(s)->meta.id)
e537352b
LP		 718 continue;
719
720 if ((r == service_load_sysv_name(s, t)) < 0)
23a177ef
LP		 721 return r;
722
e537352b 723 if (UNIT(s)->meta.load_state != UNIT_STUB)
23a177ef
LP		 724 break;
725 }
2c4104f0
LP		 726
727 return 0;
5cb5a6ff
LP		 728}
729
05e343b7
LP		 730static int service_add_bus_name(Service *s) {
731 char *n;
732 int r;
733
734 assert(s);
735 assert(s->bus_name);
736
737 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
738 return 0;
739
740 r = unit_merge_by_name(UNIT(s), n);
741 free(n);
742
743 return r;
744}
745
243b1432
LP		 746static int service_verify(Service *s) {
747 assert(s);
748
749 if (UNIT(s)->meta.load_state != UNIT_LOADED)
750 return 0;
751
752 if (!s->exec_command[SERVICE_EXEC_START]) {
9e2f7c11 753 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
243b1432
LP		 754 return -EINVAL;
755 }
756
05e343b7
LP		 757 if (s->type == SERVICE_DBUS && !s->bus_name) {
758 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
759 return -EINVAL;
760 }
761
243b1432
LP		 762 return 0;
763}
764
e537352b
LP		 765static int service_load(Unit *u) {
766 int r;
767 Service *s = SERVICE(u);
768
769 assert(s);
1e2e8133 770
5cb5a6ff 771 /* Load a .service file */
e537352b 772 if ((r = unit_load_fragment(u)) < 0)
5cb5a6ff
LP		 773 return r;
774
bd77d0fc 775 /* Load a classic init script as a fallback, if we couldn't find anything */
e537352b
LP		 776 if (u->meta.load_state == UNIT_STUB)
777 if ((r = service_load_sysv(s)) < 0)
23a177ef 778 return r;
d46de8a1 779
23a177ef 780 /* Still nothing found? Then let's give up */
e537352b 781 if (u->meta.load_state == UNIT_STUB)
23a177ef 782 return -ENOENT;
034c6ed7 783
23a177ef
LP		 784 /* We were able to load something, then let's add in the
785 * dropin directories. */
786 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 787 return r;
23a177ef
LP		 788
789 /* This is a new unit? Then let's add in some extras */
e537352b 790 if (u->meta.load_state == UNIT_LOADED) {
23a177ef
LP		 791 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
792 return r;
793
794 if ((r = unit_add_default_cgroup(u)) < 0)
795 return r;
796
56d748b4 797 if ((r = sysv_fix_order(s)) < 0)
23a177ef 798 return r;
05e343b7
LP		 799
800 if (s->bus_name) {
801 if ((r = service_add_bus_name(s)) < 0)
802 return r;
803
804 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
805 return r;
806 }
8e274523
LP		 807 }
808
243b1432 809 return service_verify(s);
034c6ed7
LP		 810}
811
87f0e418 812static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 813
5cb5a6ff 814 ServiceExecCommand c;
87f0e418 815 Service *s = SERVICE(u);
47be870b
LP		 816 const char *prefix2;
817 char *p2;
5cb5a6ff
LP		 818
819 assert(s);
820
47be870b
LP		 821 p2 = strappend(prefix, "\t");
822 prefix2 = p2 ? p2 : prefix;
44d8db9e 823
5cb5a6ff 824 fprintf(f,
81a2b7ce
LP		 825 "%sService State: %s\n"
826 "%sPermissionsStartOnly: %s\n"
8e274523 827 "%sRootDirectoryStartOnly: %s\n"
03d6ab85 828 "%sValidNoProcess: %s\n"
50159e6a 829 "%sKillMode: %s\n"
03d6ab85 830 "%sType: %s\n",
81a2b7ce
LP		 831 prefix, service_state_to_string(s->state),
832 prefix, yes_no(s->permissions_start_only),
8e274523 833 prefix, yes_no(s->root_directory_start_only),
03d6ab85 834 prefix, yes_no(s->valid_no_process),
50159e6a 835 prefix, kill_mode_to_string(s->kill_mode),
03d6ab85 836 prefix, service_type_to_string(s->type));
5cb5a6ff 837
70123e68
LP		 838 if (s->control_pid > 0)
839 fprintf(f,
840 "%sControl PID: %llu\n",
841 prefix, (unsigned long long) s->control_pid);
842
843 if (s->main_pid > 0)
844 fprintf(f,
845 "%sMain PID: %llu\n",
846 prefix, (unsigned long long) s->main_pid);
847
034c6ed7
LP		 848 if (s->pid_file)
849 fprintf(f,
850 "%sPIDFile: %s\n",
851 prefix, s->pid_file);
852
05e343b7
LP		 853 if (s->bus_name)
854 fprintf(f,
855 "%sBusName: %s\n"
856 "%sBus Name Good: %s\n",
857 prefix, s->bus_name,
858 prefix, yes_no(s->bus_name_good));
859
5cb5a6ff
LP		 860 exec_context_dump(&s->exec_context, f, prefix);
861
e537352b 862 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
5cb5a6ff 863
44d8db9e
LP		 864 if (!s->exec_command[c])
865 continue;
866
40d50879 867 fprintf(f, "%s-> %s:\n",
94f04347 868 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 869
870 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 871 }
44d8db9e 872
2c4104f0
LP		 873 if (s->sysv_path)
874 fprintf(f,
23a177ef
LP		 875 "%sSysV Init Script Path: %s\n"
876 "%sSysV Init Script has LSB Header: %s\n",
877 prefix, s->sysv_path,
878 prefix, yes_no(s->sysv_has_lsb));
2c4104f0
LP		 879
880 if (s->sysv_start_priority >= 0)
881 fprintf(f,
23a177ef 882 "%sSysVStartPriority: %i\n",
2c4104f0
LP		 883 prefix, s->sysv_start_priority);
884
8309400a
LP		 885 if (s->sysv_runlevels)
886 fprintf(f, "%sSysVRunLevels: %s\n",
887 prefix, s->sysv_runlevels);
23a177ef 888
47be870b 889 free(p2);
5cb5a6ff
LP		 890}
891
034c6ed7
LP		 892static int service_load_pid_file(Service *s) {
893 char *k;
894 unsigned long p;
895 int r;
896
897 assert(s);
898
899 if (s->main_pid_known)
900 return 0;
901
5e94833f
LP		 902 assert(s->main_pid <= 0);
903
034c6ed7
LP		 904 if (!s->pid_file)
905 return -ENOENT;
906
907 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
908 return r;
909
910 if ((r = safe_atolu(k, &p)) < 0) {
911 free(k);
912 return r;
913 }
914
915 if ((unsigned long) (pid_t) p != p)
916 return -ERANGE;
917
b8c597d5
LP		 918 if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
919 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
920 (unsigned long long) p, s->pid_file);
921 return -ESRCH;
922 }
923
16f6025e
LP		 924 if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
925 /* FIXME: we need to do something here */
926 return r;
927
b8c597d5 928 s->main_pid = (pid_t) p;
034c6ed7
LP		 929 s->main_pid_known = true;
930
931 return 0;
932}
933
3e33402a
LP		 934static int service_get_sockets(Service *s, Set **_set) {
935 Set *set;
ceee3d82
LP		 936 Iterator i;
937 char *t;
3e33402a 938 int r;
ceee3d82
LP		 939
940 assert(s);
3e33402a
LP		 941 assert(_set);
942
943 /* Collects all Socket objects that belong to this
944 * service. Note that a service might have multiple sockets
945 * via multiple names. */
946
947 if (!(set = set_new(NULL, NULL)))
948 return -ENOMEM;
ceee3d82
LP		 949
950 SET_FOREACH(t, UNIT(s)->meta.names, i) {
951 char *k;
952 Unit *p;
953
954 /* Look for all socket objects that go by any of our
955 * units and collect their fds */
956
3e33402a
LP		 957 if (!(k = unit_name_change_suffix(t, ".socket"))) {
958 r = -ENOMEM;
959 goto fail;
960 }
ceee3d82
LP		 961
962 p = manager_get_unit(UNIT(s)->meta.manager, k);
963 free(k);
964
8d567588
LP		 965 if (!p)
966 continue;
ceee3d82 967
3e33402a
LP		 968 if ((r = set_put(set, p)) < 0)
969 goto fail;
ceee3d82
LP		 970 }
971
3e33402a
LP		 972 *_set = set;
973 return 0;
974
975fail:
976 set_free(set);
977 return r;
978}
979
e537352b 980static int service_notify_sockets_dead(Service *s) {
3e33402a
LP		 981 Iterator i;
982 Set *set;
47be870b 983 Socket *sock;
3e33402a
LP		 984 int r;
985
986 assert(s);
987
988 /* Notifies all our sockets when we die */
3e33402a
LP		 989 if ((r = service_get_sockets(s, &set)) < 0)
990 return r;
991
47be870b
LP		 992 SET_FOREACH(sock, set, i)
993 socket_notify_service_dead(sock);
3e33402a
LP		 994
995 set_free(set);
996
ceee3d82
LP		 997 return 0;
998}
999
034c6ed7
LP		 1000static void service_set_state(Service *s, ServiceState state) {
1001 ServiceState old_state;
5cb5a6ff
LP		 1002 assert(s);
1003
034c6ed7 1004 old_state = s->state;
5cb5a6ff 1005 s->state = state;
034c6ed7
LP		 1006
1007 if (state != SERVICE_START_PRE &&
1008 state != SERVICE_START &&
1009 state != SERVICE_START_POST &&
1010 state != SERVICE_RELOAD &&
1011 state != SERVICE_STOP &&
1012 state != SERVICE_STOP_SIGTERM &&
1013 state != SERVICE_STOP_SIGKILL &&
1014 state != SERVICE_STOP_POST &&
1015 state != SERVICE_FINAL_SIGTERM &&
1016 state != SERVICE_FINAL_SIGKILL &&
1017 state != SERVICE_AUTO_RESTART)
acbb0225 1018 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1019
7d55e835
LP		 1020 if (state != SERVICE_START &&
1021 state != SERVICE_START_POST &&
034c6ed7
LP		 1022 state != SERVICE_RUNNING &&
1023 state != SERVICE_RELOAD &&
1024 state != SERVICE_STOP &&
1025 state != SERVICE_STOP_SIGTERM &&
1026 state != SERVICE_STOP_SIGKILL)
5e94833f 1027 service_unwatch_main_pid(s);
034c6ed7
LP		 1028
1029 if (state != SERVICE_START_PRE &&
1030 state != SERVICE_START &&
1031 state != SERVICE_START_POST &&
1032 state != SERVICE_RELOAD &&
1033 state != SERVICE_STOP &&
1034 state != SERVICE_STOP_SIGTERM &&
1035 state != SERVICE_STOP_SIGKILL &&
1036 state != SERVICE_STOP_POST &&
1037 state != SERVICE_FINAL_SIGTERM &&
e537352b 1038 state != SERVICE_FINAL_SIGKILL) {
5e94833f 1039 service_unwatch_control_pid(s);
034c6ed7 1040 s->control_command = NULL;
a16e1123 1041 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
e537352b 1042 }
034c6ed7 1043
ceee3d82
LP		 1044 if (state == SERVICE_DEAD ||
1045 state == SERVICE_STOP ||
1046 state == SERVICE_STOP_SIGTERM ||
1047 state == SERVICE_STOP_SIGKILL ||
1048 state == SERVICE_STOP_POST ||
1049 state == SERVICE_FINAL_SIGTERM ||
1050 state == SERVICE_FINAL_SIGKILL ||
1051 state == SERVICE_MAINTAINANCE ||
1052 state == SERVICE_AUTO_RESTART)
e537352b 1053 service_notify_sockets_dead(s);
ceee3d82 1054
4f2d528d
LP		 1055 if (state != SERVICE_START_PRE &&
1056 state != SERVICE_START &&
1057 !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1058 service_close_socket_fd(s);
1059
e537352b 1060 if (old_state != state)
40d50879 1061 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 1062
1063 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 1064}
1065
a16e1123
LP		 1066static int service_coldplug(Unit *u) {
1067 Service *s = SERVICE(u);
1068 int r;
1069
1070 assert(s);
1071 assert(s->state == SERVICE_DEAD);
1072
1073 if (s->deserialized_state != s->state) {
1074
1075 if (s->deserialized_state == SERVICE_START_PRE ||
1076 s->deserialized_state == SERVICE_START ||
1077 s->deserialized_state == SERVICE_START_POST ||
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 s->deserialized_state == SERVICE_STOP_POST ||
1083 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1084 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
e558336f
LP		 1085 s->deserialized_state == SERVICE_AUTO_RESTART) {
1086
1087 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1088 usec_t k;
1089
1090 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1091
1092 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1093 return r;
1094 }
1095 }
a16e1123
LP		 1096
1097 if ((s->deserialized_state == SERVICE_START &&
1098 (s->type == SERVICE_FORKING ||
1099 s->type == SERVICE_DBUS)) ||
1100 s->deserialized_state == SERVICE_START_POST ||
1101 s->deserialized_state == SERVICE_RUNNING ||
1102 s->deserialized_state == SERVICE_RELOAD ||
1103 s->deserialized_state == SERVICE_STOP ||
1104 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1105 s->deserialized_state == SERVICE_STOP_SIGKILL)
1106 if (s->main_pid > 0)
1107 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1108 return r;
1109
1110 if (s->deserialized_state == SERVICE_START_PRE ||
1111 s->deserialized_state == SERVICE_START ||
1112 s->deserialized_state == SERVICE_START_POST ||
1113 s->deserialized_state == SERVICE_RELOAD ||
1114 s->deserialized_state == SERVICE_STOP ||
1115 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1116 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1117 s->deserialized_state == SERVICE_STOP_POST ||
1118 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1119 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1120 if (s->control_pid > 0)
1121 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1122 return r;
1123
1124 service_set_state(s, s->deserialized_state);
1125 }
1126
1127 return 0;
1128}
1129
44d8db9e
LP		 1130static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1131 Iterator i;
1132 int r;
1133 int *rfds = NULL;
1134 unsigned rn_fds = 0;
3e33402a 1135 Set *set;
47be870b 1136 Socket *sock;
44d8db9e
LP		 1137
1138 assert(s);
1139 assert(fds);
1140 assert(n_fds);
1141
3e33402a
LP		 1142 if ((r = service_get_sockets(s, &set)) < 0)
1143 return r;
1144
47be870b 1145 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 1146 int *cfds;
1147 unsigned cn_fds;
1148
47be870b 1149 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1150 goto fail;
1151
1152 if (!cfds)
1153 continue;
1154
1155 if (!rfds) {
1156 rfds = cfds;
1157 rn_fds = cn_fds;
1158 } else {
1159 int *t;
1160
1161 if (!(t = new(int, rn_fds+cn_fds))) {
1162 free(cfds);
1163 r = -ENOMEM;
1164 goto fail;
1165 }
1166
1167 memcpy(t, rfds, rn_fds);
1168 memcpy(t+rn_fds, cfds, cn_fds);
1169 free(rfds);
1170 free(cfds);
1171
1172 rfds = t;
1173 rn_fds = rn_fds+cn_fds;
1174 }
1175 }
1176
1177 *fds = rfds;
1178 *n_fds = rn_fds;
3e33402a
LP		 1179
1180 set_free(set);
1181
44d8db9e
LP		 1182 return 0;
1183
1184fail:
3e33402a 1185 set_free(set);
44d8db9e 1186 free(rfds);
3e33402a 1187
44d8db9e
LP		 1188 return r;
1189}
1190
81a2b7ce
LP		 1191static int service_spawn(
1192 Service *s,
1193 ExecCommand *c,
1194 bool timeout,
1195 bool pass_fds,
1196 bool apply_permissions,
1197 bool apply_chroot,
1198 pid_t *_pid) {
1199
034c6ed7
LP		 1200 pid_t pid;
1201 int r;
44d8db9e
LP		 1202 int *fds = NULL;
1203 unsigned n_fds = 0;
9e2f7c11 1204 char **argv;
034c6ed7
LP		 1205
1206 assert(s);
1207 assert(c);
1208 assert(_pid);
1209
4f2d528d
LP		 1210 if (pass_fds) {
1211 if (s->socket_fd >= 0) {
1212 fds = &s->socket_fd;
1213 n_fds = 1;
1214 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
44d8db9e 1215 goto fail;
4f2d528d 1216 }
44d8db9e 1217
e558336f 1218 if (timeout && s->timeout_usec) {
acbb0225 1219 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1220 goto fail;
1221 } else
acbb0225 1222 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1223
9e2f7c11
LP		 1224 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1225 r = -ENOMEM;
1226 goto fail;
1227 }
1228
1229 r = exec_spawn(c,
1230 argv,
1231 &s->exec_context,
1232 fds, n_fds,
1137a57c 1233 s->meta.manager->environment,
9e2f7c11
LP		 1234 apply_permissions,
1235 apply_chroot,
1236 UNIT(s)->meta.manager->confirm_spawn,
1237 UNIT(s)->meta.cgroup_bondings,
1238 &pid);
1239
1240 strv_free(argv);
1241 if (r < 0)
034c6ed7
LP		 1242 goto fail;
1243
4f2d528d
LP		 1244 if (fds) {
1245 if (s->socket_fd >= 0)
1246 service_close_socket_fd(s);
1247 else
1248 free(fds);
1249 }
1250
87f0e418 1251 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1252 /* FIXME: we need to do something here */
1253 goto fail;
1254
1255 *_pid = pid;
1256
5cb5a6ff 1257 return 0;
034c6ed7
LP		 1258
1259fail:
44d8db9e
LP		 1260 free(fds);
1261
034c6ed7 1262 if (timeout)
acbb0225 1263 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1264
1265 return r;
1266}
1267
80876c20
LP		 1268static int main_pid_good(Service *s) {
1269 assert(s);
1270
1271 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1272 * don't know */
1273
1274 /* If we know the pid file, then lets just check if it is
1275 * still valid */
1276 if (s->main_pid_known)
1277 return s->main_pid > 0;
1278
1279 /* We don't know the pid */
1280 return -EAGAIN;
1281}
1282
1283static int control_pid_good(Service *s) {
1284 assert(s);
1285
1286 return s->control_pid > 0;
1287}
1288
1289static int cgroup_good(Service *s) {
1290 int r;
1291
1292 assert(s);
1293
1294 if (s->valid_no_process)
1295 return -EAGAIN;
1296
1297 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1298 return r;
1299
1300 return !r;
1301}
1302
034c6ed7
LP		 1303static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1304 int r;
1305 assert(s);
1306
1307 if (!success)
1308 s->failure = true;
1309
1310 if (allow_restart &&
3a762661 1311 s->allow_restart &&
034c6ed7
LP		 1312 (s->restart == SERVICE_RESTART_ALWAYS ||
1313 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1314
acbb0225 1315 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1316 goto fail;
1317
1318 service_set_state(s, SERVICE_AUTO_RESTART);
1319 } else
1320 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1321
1322 return;
1323
1324fail:
9e2f7c11 1325 log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1326 service_enter_dead(s, false, false);
1327}
1328
1329static void service_enter_signal(Service *s, ServiceState state, bool success);
1330
1331static void service_enter_stop_post(Service *s, bool success) {
1332 int r;
1333 assert(s);
1334
1335 if (!success)
1336 s->failure = true;
1337
5e94833f
LP		 1338 service_unwatch_control_pid(s);
1339
a16e1123 1340 s->control_command_id = SERVICE_EXEC_STOP_POST;
80876c20 1341 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
81a2b7ce
LP		 1342 if ((r = service_spawn(s,
1343 s->control_command,
1344 true,
1345 false,
1346 !s->permissions_start_only,
1347 !s->root_directory_start_only,
1348 &s->control_pid)) < 0)
034c6ed7
LP		 1349 goto fail;
1350
d6ea93e3 1351
80876c20
LP		 1352 service_set_state(s, SERVICE_STOP_POST);
1353 } else
1354 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
034c6ed7
LP		 1355
1356 return;
1357
1358fail:
9e2f7c11 1359 log_warning("%s failed to run stop-post executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1360 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1361}
1362
1363static void service_enter_signal(Service *s, ServiceState state, bool success) {
1364 int r;
1365 bool sent = false;
1366
1367 assert(s);
1368
1369 if (!success)
1370 s->failure = true;
1371
80876c20
LP		 1372 if (s->kill_mode != KILL_NONE) {
1373 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
034c6ed7 1374
50159e6a 1375 if (s->kill_mode == KILL_CONTROL_GROUP) {
034c6ed7 1376
50159e6a
LP		 1377 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1378 if (r != -EAGAIN && r != -ESRCH)
1379 goto fail;
1380 } else
034c6ed7
LP		 1381 sent = true;
1382 }
1383
50159e6a
LP		 1384 if (!sent) {
1385 r = 0;
80876c20 1386
50159e6a
LP		 1387 if (s->main_pid > 0) {
1388 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1389 r = -errno;
1390 else
1391 sent = true;
1392 }
1393
1394 if (s->control_pid > 0) {
1395 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1396 r = -errno;
1397 else
1398 sent = true;
1399 }
1400
1401 if (r < 0)
1402 goto fail;
1403 }
d6ea93e3 1404 }
034c6ed7 1405
e93bc5a6 1406 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
e558336f
LP		 1407 if (s->timeout_usec > 0)
1408 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1409 goto fail;
d6ea93e3 1410
80876c20
LP		 1411 service_set_state(s, state);
1412 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1413 service_enter_stop_post(s, true);
1414 else
034c6ed7
LP		 1415 service_enter_dead(s, true, true);
1416
1417 return;
1418
1419fail:
9e2f7c11 1420 log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7 1421
80876c20 1422 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
034c6ed7
LP		 1423 service_enter_stop_post(s, false);
1424 else
1425 service_enter_dead(s, false, true);
1426}
1427
1428static void service_enter_stop(Service *s, bool success) {
1429 int r;
1430 assert(s);
1431
1432 if (!success)
1433 s->failure = true;
1434
5e94833f
LP		 1435 service_unwatch_control_pid(s);
1436
a16e1123 1437 s->control_command_id = SERVICE_EXEC_STOP;
80876c20 1438 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
81a2b7ce
LP		 1439 if ((r = service_spawn(s,
1440 s->control_command,
1441 true,
1442 false,
1443 !s->permissions_start_only,
1444 !s->root_directory_start_only,
1445 &s->control_pid)) < 0)
034c6ed7
LP		 1446 goto fail;
1447
80876c20
LP		 1448 service_set_state(s, SERVICE_STOP);
1449 } else
034c6ed7
LP		 1450 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1451
1452 return;
1453
1454fail:
9e2f7c11 1455 log_warning("%s failed to run stop executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1456 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1457}
1458
80876c20
LP		 1459static void service_enter_running(Service *s, bool success) {
1460 assert(s);
1461
1462 if (!success)
1463 s->failure = true;
1464
05e343b7
LP		 1465 if (main_pid_good(s) != 0 &&
1466 cgroup_good(s) != 0 &&
1467 (s->bus_name_good || s->type != SERVICE_DBUS))
80876c20
LP		 1468 service_set_state(s, SERVICE_RUNNING);
1469 else if (s->valid_no_process)
1470 service_set_state(s, SERVICE_EXITED);
1471 else
1472 service_enter_stop(s, true);
1473}
1474
034c6ed7
LP		 1475static void service_enter_start_post(Service *s) {
1476 int r;
1477 assert(s);
1478
5e94833f
LP		 1479 service_unwatch_control_pid(s);
1480
a16e1123 1481 s->control_command_id = SERVICE_EXEC_START_POST;
80876c20 1482 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
81a2b7ce
LP		 1483 if ((r = service_spawn(s,
1484 s->control_command,
1485 true,
1486 false,
1487 !s->permissions_start_only,
1488 !s->root_directory_start_only,
1489 &s->control_pid)) < 0)
034c6ed7
LP		 1490 goto fail;
1491
d6ea93e3 1492
80876c20
LP		 1493 service_set_state(s, SERVICE_START_POST);
1494 } else
1495 service_enter_running(s, true);
034c6ed7
LP		 1496
1497 return;
1498
1499fail:
9e2f7c11 1500 log_warning("%s failed to run start-post executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1501 service_enter_stop(s, false);
1502}
1503
1504static void service_enter_start(Service *s) {
1505 pid_t pid;
1506 int r;
1507
1508 assert(s);
1509
1510 assert(s->exec_command[SERVICE_EXEC_START]);
1511 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1512
80876c20
LP		 1513 if (s->type == SERVICE_FORKING)
1514 service_unwatch_control_pid(s);
1515 else
1516 service_unwatch_main_pid(s);
1517
81a2b7ce
LP		 1518 if ((r = service_spawn(s,
1519 s->exec_command[SERVICE_EXEC_START],
05e343b7 1520 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS,
81a2b7ce
LP		 1521 true,
1522 true,
1523 true,
1524 &pid)) < 0)
034c6ed7
LP		 1525 goto fail;
1526
1527 if (s->type == SERVICE_SIMPLE) {
1528 /* For simple services we immediately start
1529 * the START_POST binaries. */
1530
1531 s->main_pid = pid;
1532 s->main_pid_known = true;
80876c20 1533
034c6ed7
LP		 1534 service_enter_start_post(s);
1535
1536 } else if (s->type == SERVICE_FORKING) {
1537
1538 /* For forking services we wait until the start
1539 * process exited. */
1540
1541 s->control_pid = pid;
80876c20 1542
a16e1123 1543 s->control_command_id = SERVICE_EXEC_START;
034c6ed7 1544 s->control_command = s->exec_command[SERVICE_EXEC_START];
80876c20
LP		 1545 service_set_state(s, SERVICE_START);
1546
05e343b7
LP		 1547 } else if (s->type == SERVICE_FINISH ||
1548 s->type == SERVICE_DBUS) {
7d55e835
LP		 1549
1550 /* For finishing services we wait until the start
1551 * process exited, too, but it is our main process. */
1552
05e343b7
LP		 1553 /* For D-Bus services we know the main pid right away,
1554 * but wait for the bus name to appear on the bus. */
1555
7d55e835 1556 s->main_pid = pid;
5e94833f 1557 s->main_pid_known = true;
80876c20 1558
80876c20 1559 service_set_state(s, SERVICE_START);
034c6ed7
LP		 1560 } else
1561 assert_not_reached("Unknown service type");
1562
1563 return;
1564
1565fail:
9e2f7c11 1566 log_warning("%s failed to run start exectuable: %s", UNIT(s)->meta.id, strerror(-r));
80876c20 1567 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 1568}
1569
1570static void service_enter_start_pre(Service *s) {
1571 int r;
1572
1573 assert(s);
1574
5e94833f
LP		 1575 service_unwatch_control_pid(s);
1576
a16e1123 1577 s->control_command_id = SERVICE_EXEC_START_PRE;
80876c20 1578 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
81a2b7ce
LP		 1579 if ((r = service_spawn(s,
1580 s->control_command,
1581 true,
1582 false,
1583 !s->permissions_start_only,
1584 !s->root_directory_start_only,
1585 &s->control_pid)) < 0)
034c6ed7
LP		 1586 goto fail;
1587
80876c20
LP		 1588 service_set_state(s, SERVICE_START_PRE);
1589 } else
034c6ed7
LP		 1590 service_enter_start(s);
1591
1592 return;
1593
1594fail:
9e2f7c11 1595 log_warning("%s failed to run start-pre executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1596 service_enter_dead(s, false, true);
1597}
1598
1599static void service_enter_restart(Service *s) {
1600 int r;
1601 assert(s);
1602
9ea9a0c8
LP		 1603 service_enter_dead(s, true, false);
1604
87f0e418 1605 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1606 goto fail;
1607
9e2f7c11 1608 log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
034c6ed7
LP		 1609 return;
1610
1611fail:
1612
9e2f7c11 1613 log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1614 service_enter_dead(s, false, false);
1615}
1616
1617static void service_enter_reload(Service *s) {
1618 int r;
1619
1620 assert(s);
1621
5e94833f
LP		 1622 service_unwatch_control_pid(s);
1623
a16e1123 1624 s->control_command_id = SERVICE_EXEC_RELOAD;
80876c20 1625 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
81a2b7ce
LP		 1626 if ((r = service_spawn(s,
1627 s->control_command,
1628 true,
1629 false,
1630 !s->permissions_start_only,
1631 !s->root_directory_start_only,
1632 &s->control_pid)) < 0)
034c6ed7
LP		 1633 goto fail;
1634
80876c20
LP		 1635 service_set_state(s, SERVICE_RELOAD);
1636 } else
1637 service_enter_running(s, true);
034c6ed7
LP		 1638
1639 return;
1640
1641fail:
9e2f7c11 1642 log_warning("%s failed to run reload executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1643 service_enter_stop(s, false);
1644}
1645
1646static void service_run_next(Service *s, bool success) {
1647 int r;
1648
1649 assert(s);
1650 assert(s->control_command);
1651 assert(s->control_command->command_next);
1652
1653 if (!success)
1654 s->failure = true;
1655
1656 s->control_command = s->control_command->command_next;
1657
5e94833f
LP		 1658 service_unwatch_control_pid(s);
1659
81a2b7ce
LP		 1660 if ((r = service_spawn(s,
1661 s->control_command,
1662 true,
1663 false,
1664 !s->permissions_start_only,
1665 !s->root_directory_start_only,
1666 &s->control_pid)) < 0)
034c6ed7
LP		 1667 goto fail;
1668
1669 return;
1670
1671fail:
9e2f7c11 1672 log_warning("%s failed to run spawn next executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7 1673
80876c20
LP		 1674 if (s->state == SERVICE_START_PRE)
1675 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1676 else if (s->state == SERVICE_STOP)
1677 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
034c6ed7
LP		 1678 else if (s->state == SERVICE_STOP_POST)
1679 service_enter_dead(s, false, true);
1680 else
1681 service_enter_stop(s, false);
5cb5a6ff
LP		 1682}
1683
87f0e418
LP		 1684static int service_start(Unit *u) {
1685 Service *s = SERVICE(u);
5cb5a6ff
LP		 1686
1687 assert(s);
1688
034c6ed7
LP		 1689 /* We cannot fulfill this request right now, try again later
1690 * please! */
1691 if (s->state == SERVICE_STOP ||
1692 s->state == SERVICE_STOP_SIGTERM ||
1693 s->state == SERVICE_STOP_SIGKILL ||
1694 s->state == SERVICE_STOP_POST ||
1695 s->state == SERVICE_FINAL_SIGTERM ||
1696 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1697 return -EAGAIN;
1698
034c6ed7
LP		 1699 /* Already on it! */
1700 if (s->state == SERVICE_START_PRE ||
1701 s->state == SERVICE_START ||
1702 s->state == SERVICE_START_POST)
1703 return 0;
1704
1705 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1706
1e2e8133
LP		 1707 /* Make sure we don't enter a busy loop of some kind. */
1708 if (!ratelimit_test(&s->ratelimit)) {
9e2f7c11 1709 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
1e2e8133
LP		 1710 return -EAGAIN;
1711 }
1712
034c6ed7
LP		 1713 s->failure = false;
1714 s->main_pid_known = false;
3a762661 1715 s->allow_restart = true;
034c6ed7
LP		 1716
1717 service_enter_start_pre(s);
1718 return 0;
5cb5a6ff
LP		 1719}
1720
87f0e418
LP		 1721static int service_stop(Unit *u) {
1722 Service *s = SERVICE(u);
5cb5a6ff
LP		 1723
1724 assert(s);
1725
e537352b 1726 /* Cannot do this now */
034c6ed7
LP		 1727 if (s->state == SERVICE_START_PRE ||
1728 s->state == SERVICE_START ||
1729 s->state == SERVICE_START_POST ||
1730 s->state == SERVICE_RELOAD)
1731 return -EAGAIN;
1732
e537352b
LP		 1733 /* Already on it */
1734 if (s->state == SERVICE_STOP ||
1735 s->state == SERVICE_STOP_SIGTERM ||
1736 s->state == SERVICE_STOP_SIGKILL ||
1737 s->state == SERVICE_STOP_POST ||
1738 s->state == SERVICE_FINAL_SIGTERM ||
1739 s->state == SERVICE_FINAL_SIGKILL)
1740 return 0;
1741
034c6ed7
LP		 1742 if (s->state == SERVICE_AUTO_RESTART) {
1743 service_set_state(s, SERVICE_DEAD);
1744 return 0;
1745 }
1746
80876c20 1747 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
5cb5a6ff 1748
3a762661
LP		 1749 /* This is a user request, so don't do restarts on this
1750 * shutdown. */
1751 s->allow_restart = false;
1752
034c6ed7 1753 service_enter_stop(s, true);
5cb5a6ff
LP		 1754 return 0;
1755}
1756
87f0e418
LP		 1757static int service_reload(Unit *u) {
1758 Service *s = SERVICE(u);
034c6ed7
LP		 1759
1760 assert(s);
1761
80876c20 1762 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
034c6ed7
LP		 1763
1764 service_enter_reload(s);
5cb5a6ff
LP		 1765 return 0;
1766}
1767
87f0e418
LP		 1768static bool service_can_reload(Unit *u) {
1769 Service *s = SERVICE(u);
034c6ed7
LP		 1770
1771 assert(s);
1772
1773 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1774}
1775
a16e1123
LP		 1776static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1777 Service *s = SERVICE(u);
1778
1779 assert(u);
1780 assert(f);
1781 assert(fds);
1782
1783 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1784 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1785
1786 if (s->control_pid > 0)
1787 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) (s->control_pid));
1788
1789 if (s->main_pid > 0)
1790 unit_serialize_item_format(u, f, "main-pid", "%u", (unsigned) (s->main_pid));
1791
1792 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1793
1794 /* There's a minor uncleanliness here: if there are multiple
1795 * commands attached here, we will start from the first one
1796 * again */
1797 if (s->control_command_id >= 0)
825636e5 1798 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
a16e1123
LP		 1799
1800 if (s->socket_fd >= 0) {
1801 int copy;
1802
1803 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1804 return copy;
1805
1806 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1807 }
1808
1809 return 0;
1810}
1811
1812static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1813 Service *s = SERVICE(u);
1814 int r;
1815
1816 assert(u);
1817 assert(key);
1818 assert(value);
1819 assert(fds);
1820
1821 if (streq(key, "state")) {
1822 ServiceState state;
1823
1824 if ((state = service_state_from_string(value)) < 0)
1825 log_debug("Failed to parse state value %s", value);
1826 else
1827 s->deserialized_state = state;
1828 } else if (streq(key, "failure")) {
1829 int b;
1830
1831 if ((b = parse_boolean(value)) < 0)
1832 log_debug("Failed to parse failure value %s", value);
1833 else
1834 s->failure = b || s->failure;
1835 } else if (streq(key, "control-pid")) {
1836 unsigned pid;
1837
1838 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1839 log_debug("Failed to parse control-pid value %s", value);
1840 else
1841 s->control_pid = (pid_t) pid;
1842 } else if (streq(key, "main-pid")) {
1843 unsigned pid;
1844
1845 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1846 log_debug("Failed to parse main-pid value %s", value);
1847 else
1848 s->main_pid = (pid_t) pid;
1849 } else if (streq(key, "main-pid-known")) {
1850 int b;
1851
1852 if ((b = parse_boolean(value)) < 0)
1853 log_debug("Failed to parse main-pid-known value %s", value);
1854 else
1855 s->main_pid_known = b;
1856 } else if (streq(key, "control-command")) {
1857 ServiceExecCommand id;
1858
1859 if ((id = service_exec_command_from_string(value)) < 0)
1860 log_debug("Failed to parse exec-command value %s", value);
1861 else {
1862 s->control_command_id = id;
1863 s->control_command = s->exec_command[id];
1864 }
1865 } else if (streq(key, "socket-fd")) {
1866 int fd;
1867
1868 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1869 log_debug("Failed to parse socket-fd value %s", value);
1870 else {
1871
1872 if (s->socket_fd >= 0)
1873 close_nointr_nofail(s->socket_fd);
1874 s->socket_fd = fdset_remove(fds, fd);
1875 }
1876 } else
1877 log_debug("Unknown serialization key '%s'", key);
1878
1879 return 0;
1880}
1881
87f0e418
LP		 1882static UnitActiveState service_active_state(Unit *u) {
1883 assert(u);
5cb5a6ff 1884
acbb0225 1885 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1886}
1887
10a94420
LP		 1888static const char *service_sub_state_to_string(Unit *u) {
1889 assert(u);
1890
1891 return service_state_to_string(SERVICE(u)->state);
1892}
1893
701cc384
LP		 1894static bool service_check_gc(Unit *u) {
1895 Service *s = SERVICE(u);
1896
1897 assert(s);
1898
1899 return !!s->sysv_path;
1900}
1901
1902static bool service_check_snapshot(Unit *u) {
1903 Service *s = SERVICE(u);
1904
1905 assert(s);
1906
1907 return !s->got_socket_fd;
1908}
1909
87f0e418
LP		 1910static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1911 Service *s = SERVICE(u);
034c6ed7 1912 bool success;
5cb5a6ff
LP		 1913
1914 assert(s);
034c6ed7
LP		 1915 assert(pid >= 0);
1916
cb8a8f78 1917 success = is_clean_exit(code, status);
034c6ed7
LP		 1918 s->failure = s->failure || !success;
1919
1920 if (s->main_pid == pid) {
1921
1922 exec_status_fill(&s->main_exec_status, pid, code, status);
1923 s->main_pid = 0;
1924
7d55e835 1925 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
034c6ed7
LP		 1926 assert(s->exec_command[SERVICE_EXEC_START]);
1927 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1928 }
1929
9e2f7c11 1930 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 1931
1932 /* The service exited, so the service is officially
1933 * gone. */
1934
1935 switch (s->state) {
1936
1937 case SERVICE_START_POST:
1938 case SERVICE_RELOAD:
1939 case SERVICE_STOP:
1940 /* Need to wait until the operation is
1941 * done */
1942 break;
1943
7d55e835
LP		 1944 case SERVICE_START:
1945 assert(s->type == SERVICE_FINISH);
1946
1947 /* This was our main goal, so let's go on */
1948 if (success)
1949 service_enter_start_post(s);
1950 else
80876c20 1951 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
7d55e835
LP		 1952 break;
1953
034c6ed7 1954 case SERVICE_RUNNING:
80876c20 1955 service_enter_running(s, success);
034c6ed7
LP		 1956 break;
1957
1958 case SERVICE_STOP_SIGTERM:
1959 case SERVICE_STOP_SIGKILL:
1960
1961 if (!control_pid_good(s))
1962 service_enter_stop_post(s, success);
5cb5a6ff 1963
034c6ed7
LP		 1964 /* If there is still a control process, wait for that first */
1965 break;
5cb5a6ff 1966
034c6ed7
LP		 1967 default:
1968 assert_not_reached("Uh, main process died at wrong time.");
1969 }
5cb5a6ff 1970
034c6ed7 1971 } else if (s->control_pid == pid) {
034c6ed7 1972
a16e1123
LP		 1973 if (s->control_command)
1974 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1975
034c6ed7
LP		 1976 s->control_pid = 0;
1977
9e2f7c11 1978 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 1979
1980 /* If we are shutting things down anyway we
1981 * don't care about failing commands. */
1982
a16e1123 1983 if (s->control_command && s->control_command->command_next && success) {
034c6ed7
LP		 1984
1985 /* There is another command to *
1986 * execute, so let's do that. */
1987
9e2f7c11 1988 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
034c6ed7
LP		 1989 service_run_next(s, success);
1990
80876c20 1991 } else {
034c6ed7
LP		 1992 /* No further commands for this step, so let's
1993 * figure out what to do next */
1994
a16e1123
LP		 1995 s->control_command = NULL;
1996 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1997
9e2f7c11 1998 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
bd982a8b 1999
034c6ed7
LP		 2000 switch (s->state) {
2001
2002 case SERVICE_START_PRE:
2003 if (success)
2004 service_enter_start(s);
2005 else
80876c20 2006 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2007 break;
2008
2009 case SERVICE_START:
2010 assert(s->type == SERVICE_FORKING);
2011
2012 /* Let's try to load the pid
2013 * file here if we can. We
2014 * ignore the return value,
2015 * since the PID file might
2016 * actually be created by a
2017 * START_POST script */
2018
2019 if (success) {
2020 if (s->pid_file)
2021 service_load_pid_file(s);
2022
2023 service_enter_start_post(s);
2024 } else
80876c20 2025 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2026
2027 break;
2028
2029 case SERVICE_START_POST:
2030 if (success && s->pid_file && !s->main_pid_known) {
2031 int r;
2032
2033 /* Hmm, let's see if we can
2034 * load the pid now after the
2035 * start-post scripts got
2036 * executed. */
2037
2038 if ((r = service_load_pid_file(s)) < 0)
9e2f7c11 2039 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
034c6ed7
LP		 2040 }
2041
2042 /* Fall through */
2043
2044 case SERVICE_RELOAD:
80876c20
LP		 2045 if (success)
2046 service_enter_running(s, true);
2047 else
034c6ed7
LP		 2048 service_enter_stop(s, false);
2049
2050 break;
2051
2052 case SERVICE_STOP:
80876c20 2053 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
034c6ed7
LP		 2054 break;
2055
2056 case SERVICE_STOP_SIGTERM:
2057 case SERVICE_STOP_SIGKILL:
2058 if (main_pid_good(s) <= 0)
2059 service_enter_stop_post(s, success);
2060
2061 /* If there is still a service
2062 * process around, wait until
2063 * that one quit, too */
2064 break;
2065
2066 case SERVICE_STOP_POST:
2067 case SERVICE_FINAL_SIGTERM:
2068 case SERVICE_FINAL_SIGKILL:
2069 service_enter_dead(s, success, true);
2070 break;
2071
2072 default:
2073 assert_not_reached("Uh, control process died at wrong time.");
2074 }
2075 }
2076 } else
2077 assert_not_reached("Got SIGCHLD for unkown PID");
2078}
2079
acbb0225 2080static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 2081 Service *s = SERVICE(u);
034c6ed7
LP		 2082
2083 assert(s);
2084 assert(elapsed == 1);
2085
acbb0225 2086 assert(w == &s->timer_watch);
034c6ed7
LP		 2087
2088 switch (s->state) {
2089
2090 case SERVICE_START_PRE:
2091 case SERVICE_START:
9e2f7c11 2092 log_warning("%s operation timed out. Terminating.", u->meta.id);
80876c20
LP		 2093 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2094 break;
2095
034c6ed7
LP		 2096 case SERVICE_START_POST:
2097 case SERVICE_RELOAD:
9e2f7c11 2098 log_warning("%s operation timed out. Stopping.", u->meta.id);
034c6ed7
LP		 2099 service_enter_stop(s, false);
2100 break;
2101
2102 case SERVICE_STOP:
9e2f7c11 2103 log_warning("%s stopping timed out. Terminating.", u->meta.id);
034c6ed7
LP		 2104 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2105 break;
2106
2107 case SERVICE_STOP_SIGTERM:
9e2f7c11 2108 log_warning("%s stopping timed out. Killing.", u->meta.id);
034c6ed7
LP		 2109 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2110 break;
2111
2112 case SERVICE_STOP_SIGKILL:
2113 /* Uh, wie sent a SIGKILL and it is still not gone?
2114 * Must be something we cannot kill, so let's just be
2115 * weirded out and continue */
2116
9e2f7c11 2117 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
034c6ed7
LP		 2118 service_enter_stop_post(s, false);
2119 break;
2120
2121 case SERVICE_STOP_POST:
9e2f7c11 2122 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
034c6ed7
LP		 2123 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2124 break;
2125
2126 case SERVICE_FINAL_SIGTERM:
9e2f7c11 2127 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
034c6ed7
LP		 2128 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2129 break;
2130
2131 case SERVICE_FINAL_SIGKILL:
9e2f7c11 2132 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id);
034c6ed7
LP		 2133 service_enter_dead(s, false, true);
2134 break;
2135
2136 case SERVICE_AUTO_RESTART:
9e2f7c11 2137 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
034c6ed7
LP		 2138 service_enter_restart(s);
2139 break;
2140
2141 default:
2142 assert_not_reached("Timeout at wrong time.");
2143 }
5cb5a6ff
LP		 2144}
2145
8e274523
LP		 2146static void service_cgroup_notify_event(Unit *u) {
2147 Service *s = SERVICE(u);
2148
2149 assert(u);
2150
9e2f7c11 2151 log_debug("%s: cgroup is empty", u->meta.id);
8e274523
LP		 2152
2153 switch (s->state) {
2154
2155 /* Waiting for SIGCHLD is usually more interesting,
2156 * because it includes return codes/signals. Which is
2157 * why we ignore the cgroup events for most cases,
2158 * except when we don't know pid which to expect the
2159 * SIGCHLD for. */
2160
2161 case SERVICE_RUNNING:
80876c20 2162 service_enter_running(s, true);
8e274523
LP		 2163 break;
2164
2165 default:
2166 ;
2167 }
2168}
2169
2c4104f0 2170static int service_enumerate(Manager *m) {
2c4104f0
LP		 2171 char **p;
2172 unsigned i;
2173 DIR *d = NULL;
2174 char *path = NULL, *fpath = NULL, *name = NULL;
2175 int r;
2176
2177 assert(m);
2178
5e177ece 2179 STRV_FOREACH(p, m->sysvrcnd_path)
09cd1ab1 2180 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2c4104f0
LP		 2181 struct dirent *de;
2182
2183 free(path);
2184 path = NULL;
09cd1ab1 2185 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2c4104f0
LP		 2186 r = -ENOMEM;
2187 goto finish;
2188 }
2189
2190 if (d)
2191 closedir(d);
2192
2193 if (!(d = opendir(path))) {
2194 if (errno != ENOENT)
2195 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2196
2197 continue;
2198 }
2199
2200 while ((de = readdir(d))) {
6542952f 2201 Unit *service;
db06e3b6 2202 int a, b;
2c4104f0
LP		 2203
2204 if (ignore_file(de->d_name))
2205 continue;
2206
2207 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2208 continue;
2209
2210 if (strlen(de->d_name) < 4)
2211 continue;
2212
db06e3b6
LP		 2213 a = undecchar(de->d_name[1]);
2214 b = undecchar(de->d_name[2]);
2215
2216 if (a < 0 || b < 0)
2217 continue;
2218
2c4104f0
LP		 2219 free(fpath);
2220 fpath = NULL;
09cd1ab1 2221 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2c4104f0
LP		 2222 r = -ENOMEM;
2223 goto finish;
2224 }
2225
2226 if (access(fpath, X_OK) < 0) {
2227
2228 if (errno != ENOENT)
2229 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2230
2231 continue;
2232 }
2233
2234 free(name);
b7ccee3c 2235 if (!(name = sysv_translate_name(de->d_name + 3))) {
2c4104f0
LP		 2236 r = -ENOMEM;
2237 goto finish;
2238 }
2239
fbe9f3a9
LP		 2240 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0) {
2241 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2242 continue;
2243 }
2c4104f0 2244
09cd1ab1
LP		 2245 if (de->d_name[0] == 'S' &&
2246 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_BASIC))
fbe9f3a9
LP		 2247 SERVICE(service)->sysv_start_priority =
2248 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
db06e3b6
LP		 2249
2250 manager_dispatch_load_queue(m);
2251 service = unit_follow_merge(service);
2252
2c4104f0 2253 if (de->d_name[0] == 'S') {
6542952f
LP		 2254 Unit *runlevel_target;
2255
09cd1ab1 2256 if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
6542952f
LP		 2257 goto finish;
2258
2259 if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2c4104f0
LP		 2260 goto finish;
2261
a0fcc5f6 2262 if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2c4104f0 2263 goto finish;
23a177ef 2264
09cd1ab1 2265 } else if (de->d_name[0] == 'K' && rcnd_table[i].type == RUNLEVEL_DOWN) {
6542952f
LP		 2266 Unit *shutdown_target;
2267
23a177ef
LP		 2268 /* We honour K links only for
2269 * halt/reboot. For the normal
2270 * runlevels we assume the
2271 * stop jobs will be
2272 * implicitly added by the
6542952f
LP		 2273 * core logic. Also, we don't
2274 * really distuingish here
2275 * between the runlevels 0 and
2276 * 6 and just add them to the
2277 * special shutdown target. */
2278
2279 if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2280 goto finish;
23a177ef 2281
a0fcc5f6 2282 if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2c4104f0
LP		 2283 goto finish;
2284
a0fcc5f6 2285 if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2c4104f0
LP		 2286 goto finish;
2287 }
2288 }
2289 }
2290
2291 r = 0;
2292
2293finish:
2294 free(path);
2295 free(fpath);
2296 free(name);
fbe9f3a9
LP		 2297
2298 if (d)
2299 closedir(d);
2c4104f0
LP		 2300
2301 return r;
2302}
2303
05e343b7
LP		 2304static void service_bus_name_owner_change(
2305 Unit *u,
2306 const char *name,
2307 const char *old_owner,
2308 const char *new_owner) {
2309
2310 Service *s = SERVICE(u);
2311
2312 assert(s);
2313 assert(name);
2314
2315 assert(streq(s->bus_name, name));
2316 assert(old_owner || new_owner);
2317
2318 if (old_owner && new_owner)
2319 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2320 else if (old_owner)
2321 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2322 else
2323 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2324
2325 s->bus_name_good = !!new_owner;
2326
2327 if (s->type == SERVICE_DBUS) {
2328
2329 /* service_enter_running() will figure out what to
2330 * do */
2331 if (s->state == SERVICE_RUNNING)
2332 service_enter_running(s, true);
2333 else if (s->state == SERVICE_START && new_owner)
2334 service_enter_start_post(s);
2335
2336 } else if (new_owner &&
2337 s->main_pid <= 0 &&
2338 (s->state == SERVICE_START ||
2339 s->state == SERVICE_START_POST ||
2340 s->state == SERVICE_RUNNING ||
2341 s->state == SERVICE_RELOAD)) {
2342
2343 /* Try to acquire PID from bus service */
2344 log_debug("Trying to acquire PID from D-Bus name...");
2345
2346 bus_query_pid(u->meta.manager, name);
2347 }
2348}
2349
2350static void service_bus_query_pid_done(
2351 Unit *u,
2352 const char *name,
2353 pid_t pid) {
2354
2355 Service *s = SERVICE(u);
2356
2357 assert(s);
2358 assert(name);
2359
2360 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2361
2362 if (s->main_pid <= 0 &&
2363 (s->state == SERVICE_START ||
2364 s->state == SERVICE_START_POST ||
2365 s->state == SERVICE_RUNNING ||
2366 s->state == SERVICE_RELOAD))
2367 s->main_pid = pid;
2368}
2369
4f2d528d
LP		 2370int service_set_socket_fd(Service *s, int fd) {
2371 assert(s);
2372 assert(fd >= 0);
2373
2374 /* This is called by the socket code when instantiating a new
2375 * service for a stream socket and the socket needs to be
2376 * configured. */
2377
2378 if (UNIT(s)->meta.load_state != UNIT_LOADED)
2379 return -EINVAL;
2380
2381 if (s->socket_fd >= 0)
2382 return -EBUSY;
2383
2384 if (s->state != SERVICE_DEAD)
2385 return -EAGAIN;
2386
2387 s->socket_fd = fd;
701cc384 2388 s->got_socket_fd = true;
4f2d528d
LP		 2389 return 0;
2390}
2391
94f04347
LP		 2392static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2393 [SERVICE_DEAD] = "dead",
2394 [SERVICE_START_PRE] = "start-pre",
2395 [SERVICE_START] = "start",
2396 [SERVICE_START_POST] = "start-post",
2397 [SERVICE_RUNNING] = "running",
80876c20 2398 [SERVICE_EXITED] = "exited",
94f04347
LP		 2399 [SERVICE_RELOAD] = "reload",
2400 [SERVICE_STOP] = "stop",
2401 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2402 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2403 [SERVICE_STOP_POST] = "stop-post",
2404 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2405 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2406 [SERVICE_MAINTAINANCE] = "maintainance",
2407 [SERVICE_AUTO_RESTART] = "auto-restart",
2408};
2409
2410DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2411
2412static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2413 [SERVICE_ONCE] = "once",
2414 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
40531a55 2415 [SERVICE_RESTART_ALWAYS] = "restart-always",
94f04347
LP		 2416};
2417
2418DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2419
2420static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2421 [SERVICE_FORKING] = "forking",
2422 [SERVICE_SIMPLE] = "simple",
05e343b7
LP		 2423 [SERVICE_FINISH] = "finish",
2424 [SERVICE_DBUS] = "dbus"
94f04347
LP		 2425};
2426
2427DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2428
e537352b 2429static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
94f04347
LP		 2430 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2431 [SERVICE_EXEC_START] = "ExecStart",
2432 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2433 [SERVICE_EXEC_RELOAD] = "ExecReload",
2434 [SERVICE_EXEC_STOP] = "ExecStop",
2435 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2436};
2437
2438DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2439
87f0e418 2440const UnitVTable service_vtable = {
5cb5a6ff
LP		 2441 .suffix = ".service",
2442
034c6ed7
LP		 2443 .init = service_init,
2444 .done = service_done,
a16e1123
LP		 2445 .load = service_load,
2446
2447 .coldplug = service_coldplug,
034c6ed7 2448
5cb5a6ff
LP		 2449 .dump = service_dump,
2450
2451 .start = service_start,
2452 .stop = service_stop,
2453 .reload = service_reload,
2454
034c6ed7
LP		 2455 .can_reload = service_can_reload,
2456
a16e1123
LP		 2457 .serialize = service_serialize,
2458 .deserialize_item = service_deserialize_item,
2459
5cb5a6ff 2460 .active_state = service_active_state,
10a94420 2461 .sub_state_to_string = service_sub_state_to_string,
5cb5a6ff 2462
701cc384
LP		 2463 .check_gc = service_check_gc,
2464 .check_snapshot = service_check_snapshot,
2465
034c6ed7
LP		 2466 .sigchld_event = service_sigchld_event,
2467 .timer_event = service_timer_event,
2c4104f0 2468
8e274523
LP		 2469 .cgroup_notify_empty = service_cgroup_notify_event,
2470
05e343b7
LP		 2471 .bus_name_owner_change = service_bus_name_owner_change,
2472 .bus_query_pid_done = service_bus_query_pid_done,
2473
4139c1b2
LP		 2474 .bus_message_handler = bus_service_message_handler,
2475
2c4104f0 2476 .enumerate = service_enumerate
5cb5a6ff 2477};
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