]> git.ipfire.org Git - thirdparty/systemd.git/blame - src/service.c
projects / thirdparty / systemd.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
swap: Fix uninitialized variable
[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
cfe243e3 60 /* SUSE style boot.d */
fbe9f3a9
LP		 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[] = {
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
343 s->type = SERVICE_FORKING;
344 s->restart = SERVICE_ONCE;
345
346 free(s->sysv_path);
347 if (!(s->sysv_path = strdup(path))) {
348 r = -ENOMEM;
349 goto finish;
350 }
351
352 while (!feof(f)) {
353 char l[LINE_MAX], *t;
354
355 if (!fgets(l, sizeof(l), f)) {
356 if (feof(f))
357 break;
358
359 r = -errno;
360 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
361 goto finish;
362 }
363
364 line++;
365
366 t = strstrip(l);
367 if (*t != '#')
368 continue;
369
370 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
371 state = LSB;
23a177ef 372 s->sysv_has_lsb = true;
2c4104f0
LP		 373 continue;
374 }
375
376 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
377 state = NORMAL;
378 continue;
379 }
380
381 t++;
382 t += strspn(t, WHITESPACE);
383
384 if (state == NORMAL) {
385
386 /* Try to parse Red Hat style chkconfig headers */
387
c2b35af6 388 if (startswith_no_case(t, "chkconfig:")) {
2c4104f0 389 int start_priority;
8309400a 390 char runlevels[16], *k;
2c4104f0
LP		 391
392 state = NORMAL;
393
8309400a
LP		 394 if (sscanf(t+10, "%15s %i %*i",
395 runlevels,
396 &start_priority) != 2) {
2c4104f0
LP		 397
398 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
399 continue;
400 }
401
fbe9f3a9
LP		 402 /* A start priority gathered from the
403 * symlink farms is preferred over the
404 * data from the LSB header. */
8309400a 405 if (start_priority < 0 || start_priority > 99)
2c4104f0 406 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
db06e3b6 407 else if (s->sysv_start_priority < 0)
8309400a
LP		 408 s->sysv_start_priority = start_priority;
409
410 char_array_0(runlevels);
411 k = delete_chars(runlevels, WHITESPACE "-");
412
413 if (k[0]) {
414 char *d;
415
416 if (!(d = strdup(k))) {
417 r = -ENOMEM;
418 goto finish;
419 }
420
421 free(s->sysv_runlevels);
422 s->sysv_runlevels = d;
2c4104f0
LP		 423 }
424
c2b35af6 425 } else if (startswith_no_case(t, "description:")) {
2c4104f0
LP		 426
427 size_t k = strlen(t);
428 char *d;
429
430 if (t[k-1] == '\\') {
431 state = DESCRIPTION;
432 t[k-1] = 0;
433 }
434
435 if (!(d = strdup(strstrip(t+12)))) {
436 r = -ENOMEM;
437 goto finish;
438 }
439
440 free(u->meta.description);
441 u->meta.description = d;
442
c2b35af6 443 } else if (startswith_no_case(t, "pidfile:")) {
2c4104f0
LP		 444
445 char *fn;
446
447 state = NORMAL;
448
449 fn = strstrip(t+8);
450 if (!path_is_absolute(fn)) {
451 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
452 continue;
453 }
454
455 if (!(fn = strdup(fn))) {
456 r = -ENOMEM;
457 goto finish;
458 }
459
460 free(s->pid_file);
461 s->pid_file = fn;
462 }
463
464 } else if (state == DESCRIPTION) {
465
466 /* Try to parse Red Hat style description
467 * continuation */
468
469 size_t k = strlen(t);
470 char *d;
471
472 if (t[k-1] == '\\')
473 t[k-1] = 0;
474 else
475 state = NORMAL;
476
477 assert(u->meta.description);
478 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
479 r = -ENOMEM;
480 goto finish;
481 }
482
483 free(u->meta.description);
484 u->meta.description = d;
485
486 } else if (state == LSB || state == LSB_DESCRIPTION) {
487
c2b35af6 488 if (startswith_no_case(t, "Provides:")) {
2c4104f0
LP		 489 char *i, *w;
490 size_t z;
491
492 state = LSB;
493
494 FOREACH_WORD(w, z, t+9, i) {
495 char *n, *m;
496
497 if (!(n = strndup(w, z))) {
498 r = -ENOMEM;
499 goto finish;
500 }
501
b7ccee3c 502 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 503 free(n);
504
505 if (r < 0)
506 goto finish;
507
508 if (r == 0)
509 continue;
510
bd77d0fc
LP		 511 if (unit_name_to_type(m) == UNIT_SERVICE)
512 r = unit_add_name(u, m);
513 else {
701cc384
LP		 514 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL, true)) >= 0)
515 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
bd77d0fc
LP		 516 }
517
2c4104f0
LP		 518 free(m);
519
520 if (r < 0)
521 goto finish;
522 }
523
c2b35af6
LP		 524 } else if (startswith_no_case(t, "Required-Start:") ||
525 startswith_no_case(t, "Should-Start:") ||
526 startswith_no_case(t, "X-Start-Before:") ||
527 startswith_no_case(t, "X-Start-After:")) {
2c4104f0
LP		 528 char *i, *w;
529 size_t z;
530
531 state = LSB;
532
533 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
534 char *n, *m;
535
536 if (!(n = strndup(w, z))) {
537 r = -ENOMEM;
538 goto finish;
539 }
540
b7ccee3c 541 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 542 free(n);
543
544 if (r < 0)
545 goto finish;
546
547 if (r == 0)
548 continue;
549
c2b35af6 550 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
2c4104f0
LP		 551 free(m);
552
553 if (r < 0)
554 goto finish;
555 }
c2b35af6 556 } else if (startswith_no_case(t, "Default-Start:")) {
8309400a
LP		 557 char *k, *d;
558
559 state = LSB;
560
561 k = delete_chars(t+14, WHITESPACE "-");
562
563 if (k[0] != 0) {
564 if (!(d = strdup(k))) {
565 r = -ENOMEM;
566 goto finish;
567 }
568
569 free(s->sysv_runlevels);
570 s->sysv_runlevels = d;
571 }
2c4104f0 572
c2b35af6 573 } else if (startswith_no_case(t, "Description:")) {
2c4104f0
LP		 574 char *d;
575
576 state = LSB_DESCRIPTION;
577
578 if (!(d = strdup(strstrip(t+12)))) {
579 r = -ENOMEM;
580 goto finish;
581 }
582
583 free(u->meta.description);
584 u->meta.description = d;
585
c2b35af6 586 } else if (startswith_no_case(t, "Short-Description:") &&
8309400a 587 !u->meta.description) {
2c4104f0
LP		 588 char *d;
589
590 /* We use the short description only
591 * if no long description is set. */
592
593 state = LSB;
594
595 if (!(d = strdup(strstrip(t+18)))) {
596 r = -ENOMEM;
597 goto finish;
598 }
599
2c4104f0
LP		 600 u->meta.description = d;
601
723c83fd
LP		 602 } else if (startswith_no_case(t, "X-Interactive:")) {
603 int b;
604
605 if ((b = parse_boolean(strstrip(t+14))) < 0) {
606 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
607 continue;
608 }
609
610 if (b)
611 s->exec_context.std_input = EXEC_INPUT_TTY;
612 else
613 s->exec_context.std_input = EXEC_INPUT_NULL;
614
2c4104f0
LP		 615 } else if (state == LSB_DESCRIPTION) {
616
617 if (startswith(l, "#\t") || startswith(l, "# ")) {
618 char *d;
619
620 assert(u->meta.description);
621 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
622 r = -ENOMEM;
623 goto finish;
624 }
625
626 free(u->meta.description);
627 u->meta.description = d;
628 } else
629 state = LSB;
630 }
631 }
632 }
633
2c4104f0
LP		 634 if ((r = sysv_exec_commands(s)) < 0)
635 goto finish;
636
09cd1ab1 637 if (!s->sysv_runlevels || chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
0bc824be
LP		 638 /* If there a runlevels configured for this service
639 * but none of the standard ones, then we assume this
640 * is some special kind of service (which might be
641 * needed for early boot) and don't create any links
642 * to it. */
643
701cc384
LP		 644 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0 ||
645 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
0bc824be 646 goto finish;
09cd1ab1
LP		 647
648 } else
649 /* Don't timeout special services during boot (like fsck) */
650 s->timeout_usec = 0;
0fd030be 651
80876c20
LP		 652 /* Special setting for all SysV services */
653 s->valid_no_process = true;
b29a8e58 654 s->kill_mode = KILL_PROCESS_GROUP;
80876c20 655
e537352b 656 u->meta.load_state = UNIT_LOADED;
23a177ef 657 r = 0;
2c4104f0
LP		 658
659finish:
660
661 if (f)
662 fclose(f);
663
664 return r;
665}
666
e537352b 667static int service_load_sysv_name(Service *s, const char *name) {
2c4104f0
LP		 668 char **p;
669
670 assert(s);
671 assert(name);
672
d017c6ca
LP		 673 /* For SysV services we strip the boot. or .sh
674 * prefixes/suffixes. */
675 if (startswith(name, "boot.") ||
676 endswith(name, ".sh.service"))
677 return -ENOENT;
678
2c4104f0
LP		 679 STRV_FOREACH(p, UNIT(s)->meta.manager->sysvinit_path) {
680 char *path;
681 int r;
682
683 if (asprintf(&path, "%s/%s", *p, name) < 0)
684 return -ENOMEM;
685
686 assert(endswith(path, ".service"));
687 path[strlen(path)-8] = 0;
688
e537352b 689 r = service_load_sysv_path(s, path);
fbe9f3a9
LP		 690
691 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
d017c6ca 692 /* Try Debian style xxx.sh source'able init scripts */
fbe9f3a9
LP		 693 strcat(path, ".sh");
694 r = service_load_sysv_path(s, path);
695 }
696
2c4104f0
LP		 697 free(path);
698
fbe9f3a9 699 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
cfe243e3 700 /* Try SUSE style boot.xxx init scripts */
fbe9f3a9
LP		 701
702 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
703 return -ENOMEM;
704
705 path[strlen(path)-8] = 0;
706 r = service_load_sysv_path(s, path);
707 free(path);
708 }
709
23a177ef 710 if (r < 0)
2c4104f0 711 return r;
23a177ef 712
e537352b 713 if ((UNIT(s)->meta.load_state != UNIT_STUB))
23a177ef 714 break;
2c4104f0
LP		 715 }
716
717 return 0;
718}
719
e537352b 720static int service_load_sysv(Service *s) {
2c4104f0
LP		 721 const char *t;
722 Iterator i;
723 int r;
724
5cb5a6ff
LP		 725 assert(s);
726
727 /* Load service data from SysV init scripts, preferably with
728 * LSB headers ... */
729
2c4104f0
LP		 730 if (strv_isempty(UNIT(s)->meta.manager->sysvinit_path))
731 return 0;
732
9e2f7c11 733 if ((t = UNIT(s)->meta.id))
e537352b 734 if ((r = service_load_sysv_name(s, t)) < 0)
2c4104f0
LP		 735 return r;
736
e537352b 737 if (UNIT(s)->meta.load_state == UNIT_STUB)
23a177ef 738 SET_FOREACH(t, UNIT(s)->meta.names, i) {
9e2f7c11 739 if (t == UNIT(s)->meta.id)
e537352b
LP		 740 continue;
741
742 if ((r == service_load_sysv_name(s, t)) < 0)
23a177ef
LP		 743 return r;
744
e537352b 745 if (UNIT(s)->meta.load_state != UNIT_STUB)
23a177ef
LP		 746 break;
747 }
2c4104f0
LP		 748
749 return 0;
5cb5a6ff
LP		 750}
751
05e343b7
LP		 752static int service_add_bus_name(Service *s) {
753 char *n;
754 int r;
755
756 assert(s);
757 assert(s->bus_name);
758
759 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
760 return 0;
761
762 r = unit_merge_by_name(UNIT(s), n);
763 free(n);
764
765 return r;
766}
767
243b1432
LP		 768static int service_verify(Service *s) {
769 assert(s);
770
771 if (UNIT(s)->meta.load_state != UNIT_LOADED)
772 return 0;
773
774 if (!s->exec_command[SERVICE_EXEC_START]) {
9e2f7c11 775 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
243b1432
LP		 776 return -EINVAL;
777 }
778
05e343b7
LP		 779 if (s->type == SERVICE_DBUS && !s->bus_name) {
780 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
781 return -EINVAL;
782 }
783
243b1432
LP		 784 return 0;
785}
786
e537352b
LP		 787static int service_load(Unit *u) {
788 int r;
789 Service *s = SERVICE(u);
790
791 assert(s);
1e2e8133 792
5cb5a6ff 793 /* Load a .service file */
e537352b 794 if ((r = unit_load_fragment(u)) < 0)
5cb5a6ff
LP		 795 return r;
796
bd77d0fc 797 /* Load a classic init script as a fallback, if we couldn't find anything */
e537352b
LP		 798 if (u->meta.load_state == UNIT_STUB)
799 if ((r = service_load_sysv(s)) < 0)
23a177ef 800 return r;
d46de8a1 801
23a177ef 802 /* Still nothing found? Then let's give up */
e537352b 803 if (u->meta.load_state == UNIT_STUB)
23a177ef 804 return -ENOENT;
034c6ed7 805
23a177ef
LP		 806 /* We were able to load something, then let's add in the
807 * dropin directories. */
808 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 809 return r;
23a177ef
LP		 810
811 /* This is a new unit? Then let's add in some extras */
e537352b 812 if (u->meta.load_state == UNIT_LOADED) {
23a177ef
LP		 813 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
814 return r;
815
816 if ((r = unit_add_default_cgroup(u)) < 0)
817 return r;
818
56d748b4 819 if ((r = sysv_fix_order(s)) < 0)
23a177ef 820 return r;
05e343b7
LP		 821
822 if (s->bus_name) {
823 if ((r = service_add_bus_name(s)) < 0)
824 return r;
825
826 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
827 return r;
828 }
8e274523
LP		 829 }
830
243b1432 831 return service_verify(s);
034c6ed7
LP		 832}
833
87f0e418 834static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 835
5cb5a6ff 836 ServiceExecCommand c;
87f0e418 837 Service *s = SERVICE(u);
47be870b
LP		 838 const char *prefix2;
839 char *p2;
5cb5a6ff
LP		 840
841 assert(s);
842
47be870b
LP		 843 p2 = strappend(prefix, "\t");
844 prefix2 = p2 ? p2 : prefix;
44d8db9e 845
5cb5a6ff 846 fprintf(f,
81a2b7ce
LP		 847 "%sService State: %s\n"
848 "%sPermissionsStartOnly: %s\n"
8e274523 849 "%sRootDirectoryStartOnly: %s\n"
03d6ab85 850 "%sValidNoProcess: %s\n"
50159e6a 851 "%sKillMode: %s\n"
03d6ab85 852 "%sType: %s\n",
81a2b7ce
LP		 853 prefix, service_state_to_string(s->state),
854 prefix, yes_no(s->permissions_start_only),
8e274523 855 prefix, yes_no(s->root_directory_start_only),
03d6ab85 856 prefix, yes_no(s->valid_no_process),
50159e6a 857 prefix, kill_mode_to_string(s->kill_mode),
03d6ab85 858 prefix, service_type_to_string(s->type));
5cb5a6ff 859
70123e68
LP		 860 if (s->control_pid > 0)
861 fprintf(f,
862 "%sControl PID: %llu\n",
863 prefix, (unsigned long long) s->control_pid);
864
865 if (s->main_pid > 0)
866 fprintf(f,
867 "%sMain PID: %llu\n",
868 prefix, (unsigned long long) s->main_pid);
869
034c6ed7
LP		 870 if (s->pid_file)
871 fprintf(f,
872 "%sPIDFile: %s\n",
873 prefix, s->pid_file);
874
05e343b7
LP		 875 if (s->bus_name)
876 fprintf(f,
877 "%sBusName: %s\n"
878 "%sBus Name Good: %s\n",
879 prefix, s->bus_name,
880 prefix, yes_no(s->bus_name_good));
881
5cb5a6ff
LP		 882 exec_context_dump(&s->exec_context, f, prefix);
883
e537352b 884 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
5cb5a6ff 885
44d8db9e
LP		 886 if (!s->exec_command[c])
887 continue;
888
40d50879 889 fprintf(f, "%s-> %s:\n",
94f04347 890 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 891
892 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 893 }
44d8db9e 894
2c4104f0
LP		 895 if (s->sysv_path)
896 fprintf(f,
23a177ef
LP		 897 "%sSysV Init Script Path: %s\n"
898 "%sSysV Init Script has LSB Header: %s\n",
899 prefix, s->sysv_path,
900 prefix, yes_no(s->sysv_has_lsb));
2c4104f0
LP		 901
902 if (s->sysv_start_priority >= 0)
903 fprintf(f,
23a177ef 904 "%sSysVStartPriority: %i\n",
2c4104f0
LP		 905 prefix, s->sysv_start_priority);
906
8309400a
LP		 907 if (s->sysv_runlevels)
908 fprintf(f, "%sSysVRunLevels: %s\n",
909 prefix, s->sysv_runlevels);
23a177ef 910
47be870b 911 free(p2);
5cb5a6ff
LP		 912}
913
034c6ed7
LP		 914static int service_load_pid_file(Service *s) {
915 char *k;
916 unsigned long p;
917 int r;
918
919 assert(s);
920
921 if (s->main_pid_known)
922 return 0;
923
5e94833f
LP		 924 assert(s->main_pid <= 0);
925
034c6ed7
LP		 926 if (!s->pid_file)
927 return -ENOENT;
928
929 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
930 return r;
931
932 if ((r = safe_atolu(k, &p)) < 0) {
933 free(k);
934 return r;
935 }
936
937 if ((unsigned long) (pid_t) p != p)
938 return -ERANGE;
939
b8c597d5
LP		 940 if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
941 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
942 (unsigned long long) p, s->pid_file);
943 return -ESRCH;
944 }
945
16f6025e
LP		 946 if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
947 /* FIXME: we need to do something here */
948 return r;
949
b8c597d5 950 s->main_pid = (pid_t) p;
034c6ed7
LP		 951 s->main_pid_known = true;
952
953 return 0;
954}
955
3e33402a
LP		 956static int service_get_sockets(Service *s, Set **_set) {
957 Set *set;
ceee3d82
LP		 958 Iterator i;
959 char *t;
3e33402a 960 int r;
ceee3d82
LP		 961
962 assert(s);
3e33402a
LP		 963 assert(_set);
964
965 /* Collects all Socket objects that belong to this
966 * service. Note that a service might have multiple sockets
967 * via multiple names. */
968
969 if (!(set = set_new(NULL, NULL)))
970 return -ENOMEM;
ceee3d82
LP		 971
972 SET_FOREACH(t, UNIT(s)->meta.names, i) {
973 char *k;
974 Unit *p;
975
976 /* Look for all socket objects that go by any of our
977 * units and collect their fds */
978
3e33402a
LP		 979 if (!(k = unit_name_change_suffix(t, ".socket"))) {
980 r = -ENOMEM;
981 goto fail;
982 }
ceee3d82
LP		 983
984 p = manager_get_unit(UNIT(s)->meta.manager, k);
985 free(k);
986
8d567588
LP		 987 if (!p)
988 continue;
ceee3d82 989
3e33402a
LP		 990 if ((r = set_put(set, p)) < 0)
991 goto fail;
ceee3d82
LP		 992 }
993
3e33402a
LP		 994 *_set = set;
995 return 0;
996
997fail:
998 set_free(set);
999 return r;
1000}
1001
e537352b 1002static int service_notify_sockets_dead(Service *s) {
3e33402a
LP		 1003 Iterator i;
1004 Set *set;
47be870b 1005 Socket *sock;
3e33402a
LP		 1006 int r;
1007
1008 assert(s);
1009
1010 /* Notifies all our sockets when we die */
3e33402a
LP		 1011 if ((r = service_get_sockets(s, &set)) < 0)
1012 return r;
1013
47be870b
LP		 1014 SET_FOREACH(sock, set, i)
1015 socket_notify_service_dead(sock);
3e33402a
LP		 1016
1017 set_free(set);
1018
ceee3d82
LP		 1019 return 0;
1020}
1021
034c6ed7
LP		 1022static void service_set_state(Service *s, ServiceState state) {
1023 ServiceState old_state;
5cb5a6ff
LP		 1024 assert(s);
1025
034c6ed7 1026 old_state = s->state;
5cb5a6ff 1027 s->state = state;
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 &&
1038 state != SERVICE_FINAL_SIGKILL &&
1039 state != SERVICE_AUTO_RESTART)
acbb0225 1040 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1041
7d55e835
LP		 1042 if (state != SERVICE_START &&
1043 state != SERVICE_START_POST &&
034c6ed7
LP		 1044 state != SERVICE_RUNNING &&
1045 state != SERVICE_RELOAD &&
1046 state != SERVICE_STOP &&
1047 state != SERVICE_STOP_SIGTERM &&
1048 state != SERVICE_STOP_SIGKILL)
5e94833f 1049 service_unwatch_main_pid(s);
034c6ed7
LP		 1050
1051 if (state != SERVICE_START_PRE &&
1052 state != SERVICE_START &&
1053 state != SERVICE_START_POST &&
1054 state != SERVICE_RELOAD &&
1055 state != SERVICE_STOP &&
1056 state != SERVICE_STOP_SIGTERM &&
1057 state != SERVICE_STOP_SIGKILL &&
1058 state != SERVICE_STOP_POST &&
1059 state != SERVICE_FINAL_SIGTERM &&
e537352b 1060 state != SERVICE_FINAL_SIGKILL) {
5e94833f 1061 service_unwatch_control_pid(s);
034c6ed7 1062 s->control_command = NULL;
a16e1123 1063 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
e537352b 1064 }
034c6ed7 1065
ceee3d82
LP		 1066 if (state == SERVICE_DEAD ||
1067 state == SERVICE_STOP ||
1068 state == SERVICE_STOP_SIGTERM ||
1069 state == SERVICE_STOP_SIGKILL ||
1070 state == SERVICE_STOP_POST ||
1071 state == SERVICE_FINAL_SIGTERM ||
1072 state == SERVICE_FINAL_SIGKILL ||
1073 state == SERVICE_MAINTAINANCE ||
1074 state == SERVICE_AUTO_RESTART)
e537352b 1075 service_notify_sockets_dead(s);
ceee3d82 1076
4f2d528d
LP		 1077 if (state != SERVICE_START_PRE &&
1078 state != SERVICE_START &&
1079 !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1080 service_close_socket_fd(s);
1081
e537352b 1082 if (old_state != state)
40d50879 1083 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 1084
1085 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 1086}
1087
a16e1123
LP		 1088static int service_coldplug(Unit *u) {
1089 Service *s = SERVICE(u);
1090 int r;
1091
1092 assert(s);
1093 assert(s->state == SERVICE_DEAD);
1094
1095 if (s->deserialized_state != s->state) {
1096
1097 if (s->deserialized_state == SERVICE_START_PRE ||
1098 s->deserialized_state == SERVICE_START ||
1099 s->deserialized_state == SERVICE_START_POST ||
1100 s->deserialized_state == SERVICE_RELOAD ||
1101 s->deserialized_state == SERVICE_STOP ||
1102 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1103 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1104 s->deserialized_state == SERVICE_STOP_POST ||
1105 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1106 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
e558336f
LP		 1107 s->deserialized_state == SERVICE_AUTO_RESTART) {
1108
1109 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1110 usec_t k;
1111
1112 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1113
1114 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1115 return r;
1116 }
1117 }
a16e1123
LP		 1118
1119 if ((s->deserialized_state == SERVICE_START &&
1120 (s->type == SERVICE_FORKING ||
1121 s->type == SERVICE_DBUS)) ||
1122 s->deserialized_state == SERVICE_START_POST ||
1123 s->deserialized_state == SERVICE_RUNNING ||
1124 s->deserialized_state == SERVICE_RELOAD ||
1125 s->deserialized_state == SERVICE_STOP ||
1126 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1127 s->deserialized_state == SERVICE_STOP_SIGKILL)
1128 if (s->main_pid > 0)
1129 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1130 return r;
1131
1132 if (s->deserialized_state == SERVICE_START_PRE ||
1133 s->deserialized_state == SERVICE_START ||
1134 s->deserialized_state == SERVICE_START_POST ||
1135 s->deserialized_state == SERVICE_RELOAD ||
1136 s->deserialized_state == SERVICE_STOP ||
1137 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1138 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1139 s->deserialized_state == SERVICE_STOP_POST ||
1140 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1141 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1142 if (s->control_pid > 0)
1143 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1144 return r;
1145
1146 service_set_state(s, s->deserialized_state);
1147 }
1148
1149 return 0;
1150}
1151
44d8db9e
LP		 1152static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1153 Iterator i;
1154 int r;
1155 int *rfds = NULL;
1156 unsigned rn_fds = 0;
3e33402a 1157 Set *set;
47be870b 1158 Socket *sock;
44d8db9e
LP		 1159
1160 assert(s);
1161 assert(fds);
1162 assert(n_fds);
1163
3e33402a
LP		 1164 if ((r = service_get_sockets(s, &set)) < 0)
1165 return r;
1166
47be870b 1167 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 1168 int *cfds;
1169 unsigned cn_fds;
1170
47be870b 1171 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1172 goto fail;
1173
1174 if (!cfds)
1175 continue;
1176
1177 if (!rfds) {
1178 rfds = cfds;
1179 rn_fds = cn_fds;
1180 } else {
1181 int *t;
1182
1183 if (!(t = new(int, rn_fds+cn_fds))) {
1184 free(cfds);
1185 r = -ENOMEM;
1186 goto fail;
1187 }
1188
1189 memcpy(t, rfds, rn_fds);
1190 memcpy(t+rn_fds, cfds, cn_fds);
1191 free(rfds);
1192 free(cfds);
1193
1194 rfds = t;
1195 rn_fds = rn_fds+cn_fds;
1196 }
1197 }
1198
1199 *fds = rfds;
1200 *n_fds = rn_fds;
3e33402a
LP		 1201
1202 set_free(set);
1203
44d8db9e
LP		 1204 return 0;
1205
1206fail:
3e33402a 1207 set_free(set);
44d8db9e 1208 free(rfds);
3e33402a 1209
44d8db9e
LP		 1210 return r;
1211}
1212
81a2b7ce
LP		 1213static int service_spawn(
1214 Service *s,
1215 ExecCommand *c,
1216 bool timeout,
1217 bool pass_fds,
1218 bool apply_permissions,
1219 bool apply_chroot,
1220 pid_t *_pid) {
1221
034c6ed7
LP		 1222 pid_t pid;
1223 int r;
44d8db9e
LP		 1224 int *fds = NULL;
1225 unsigned n_fds = 0;
9e2f7c11 1226 char **argv;
034c6ed7
LP		 1227
1228 assert(s);
1229 assert(c);
1230 assert(_pid);
1231
4f2d528d
LP		 1232 if (pass_fds) {
1233 if (s->socket_fd >= 0) {
1234 fds = &s->socket_fd;
1235 n_fds = 1;
1236 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
44d8db9e 1237 goto fail;
4f2d528d 1238 }
44d8db9e 1239
e558336f 1240 if (timeout && s->timeout_usec) {
acbb0225 1241 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1242 goto fail;
1243 } else
acbb0225 1244 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1245
9e2f7c11
LP		 1246 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1247 r = -ENOMEM;
1248 goto fail;
1249 }
1250
1251 r = exec_spawn(c,
1252 argv,
1253 &s->exec_context,
1254 fds, n_fds,
1137a57c 1255 s->meta.manager->environment,
9e2f7c11
LP		 1256 apply_permissions,
1257 apply_chroot,
1258 UNIT(s)->meta.manager->confirm_spawn,
1259 UNIT(s)->meta.cgroup_bondings,
1260 &pid);
1261
1262 strv_free(argv);
1263 if (r < 0)
034c6ed7
LP		 1264 goto fail;
1265
4f2d528d
LP		 1266 if (fds) {
1267 if (s->socket_fd >= 0)
1268 service_close_socket_fd(s);
1269 else
1270 free(fds);
1271 }
1272
87f0e418 1273 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1274 /* FIXME: we need to do something here */
1275 goto fail;
1276
1277 *_pid = pid;
1278
5cb5a6ff 1279 return 0;
034c6ed7
LP		 1280
1281fail:
44d8db9e
LP		 1282 free(fds);
1283
034c6ed7 1284 if (timeout)
acbb0225 1285 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1286
1287 return r;
1288}
1289
80876c20
LP		 1290static int main_pid_good(Service *s) {
1291 assert(s);
1292
1293 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1294 * don't know */
1295
1296 /* If we know the pid file, then lets just check if it is
1297 * still valid */
1298 if (s->main_pid_known)
1299 return s->main_pid > 0;
1300
1301 /* We don't know the pid */
1302 return -EAGAIN;
1303}
1304
1305static int control_pid_good(Service *s) {
1306 assert(s);
1307
1308 return s->control_pid > 0;
1309}
1310
1311static int cgroup_good(Service *s) {
1312 int r;
1313
1314 assert(s);
1315
1316 if (s->valid_no_process)
1317 return -EAGAIN;
1318
1319 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1320 return r;
1321
1322 return !r;
1323}
1324
034c6ed7
LP		 1325static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1326 int r;
1327 assert(s);
1328
1329 if (!success)
1330 s->failure = true;
1331
1332 if (allow_restart &&
3a762661 1333 s->allow_restart &&
034c6ed7
LP		 1334 (s->restart == SERVICE_RESTART_ALWAYS ||
1335 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1336
acbb0225 1337 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1338 goto fail;
1339
1340 service_set_state(s, SERVICE_AUTO_RESTART);
1341 } else
1342 service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
1343
1344 return;
1345
1346fail:
9e2f7c11 1347 log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1348 service_enter_dead(s, false, false);
1349}
1350
1351static void service_enter_signal(Service *s, ServiceState state, bool success);
1352
1353static void service_enter_stop_post(Service *s, bool success) {
1354 int r;
1355 assert(s);
1356
1357 if (!success)
1358 s->failure = true;
1359
5e94833f
LP		 1360 service_unwatch_control_pid(s);
1361
a16e1123 1362 s->control_command_id = SERVICE_EXEC_STOP_POST;
80876c20 1363 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
81a2b7ce
LP		 1364 if ((r = service_spawn(s,
1365 s->control_command,
1366 true,
1367 false,
1368 !s->permissions_start_only,
1369 !s->root_directory_start_only,
1370 &s->control_pid)) < 0)
034c6ed7
LP		 1371 goto fail;
1372
d6ea93e3 1373
80876c20
LP		 1374 service_set_state(s, SERVICE_STOP_POST);
1375 } else
1376 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
034c6ed7
LP		 1377
1378 return;
1379
1380fail:
9e2f7c11 1381 log_warning("%s failed to run stop-post executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1382 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1383}
1384
1385static void service_enter_signal(Service *s, ServiceState state, bool success) {
1386 int r;
1387 bool sent = false;
1388
1389 assert(s);
1390
1391 if (!success)
1392 s->failure = true;
1393
80876c20
LP		 1394 if (s->kill_mode != KILL_NONE) {
1395 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
034c6ed7 1396
50159e6a 1397 if (s->kill_mode == KILL_CONTROL_GROUP) {
034c6ed7 1398
50159e6a
LP		 1399 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1400 if (r != -EAGAIN && r != -ESRCH)
1401 goto fail;
1402 } else
034c6ed7
LP		 1403 sent = true;
1404 }
1405
50159e6a
LP		 1406 if (!sent) {
1407 r = 0;
80876c20 1408
50159e6a
LP		 1409 if (s->main_pid > 0) {
1410 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1411 r = -errno;
1412 else
1413 sent = true;
1414 }
1415
1416 if (s->control_pid > 0) {
1417 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1418 r = -errno;
1419 else
1420 sent = true;
1421 }
1422
1423 if (r < 0)
1424 goto fail;
1425 }
d6ea93e3 1426 }
034c6ed7 1427
e93bc5a6 1428 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
e558336f
LP		 1429 if (s->timeout_usec > 0)
1430 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1431 goto fail;
d6ea93e3 1432
80876c20
LP		 1433 service_set_state(s, state);
1434 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1435 service_enter_stop_post(s, true);
1436 else
034c6ed7
LP		 1437 service_enter_dead(s, true, true);
1438
1439 return;
1440
1441fail:
9e2f7c11 1442 log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7 1443
80876c20 1444 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
034c6ed7
LP		 1445 service_enter_stop_post(s, false);
1446 else
1447 service_enter_dead(s, false, true);
1448}
1449
1450static void service_enter_stop(Service *s, bool success) {
1451 int r;
1452 assert(s);
1453
1454 if (!success)
1455 s->failure = true;
1456
5e94833f
LP		 1457 service_unwatch_control_pid(s);
1458
a16e1123 1459 s->control_command_id = SERVICE_EXEC_STOP;
80876c20 1460 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
81a2b7ce
LP		 1461 if ((r = service_spawn(s,
1462 s->control_command,
1463 true,
1464 false,
1465 !s->permissions_start_only,
1466 !s->root_directory_start_only,
1467 &s->control_pid)) < 0)
034c6ed7
LP		 1468 goto fail;
1469
80876c20
LP		 1470 service_set_state(s, SERVICE_STOP);
1471 } else
034c6ed7
LP		 1472 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1473
1474 return;
1475
1476fail:
9e2f7c11 1477 log_warning("%s failed to run stop executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1478 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1479}
1480
80876c20
LP		 1481static void service_enter_running(Service *s, bool success) {
1482 assert(s);
1483
1484 if (!success)
1485 s->failure = true;
1486
05e343b7
LP		 1487 if (main_pid_good(s) != 0 &&
1488 cgroup_good(s) != 0 &&
1489 (s->bus_name_good || s->type != SERVICE_DBUS))
80876c20
LP		 1490 service_set_state(s, SERVICE_RUNNING);
1491 else if (s->valid_no_process)
1492 service_set_state(s, SERVICE_EXITED);
1493 else
1494 service_enter_stop(s, true);
1495}
1496
034c6ed7
LP		 1497static void service_enter_start_post(Service *s) {
1498 int r;
1499 assert(s);
1500
5e94833f
LP		 1501 service_unwatch_control_pid(s);
1502
a16e1123 1503 s->control_command_id = SERVICE_EXEC_START_POST;
80876c20 1504 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
81a2b7ce
LP		 1505 if ((r = service_spawn(s,
1506 s->control_command,
1507 true,
1508 false,
1509 !s->permissions_start_only,
1510 !s->root_directory_start_only,
1511 &s->control_pid)) < 0)
034c6ed7
LP		 1512 goto fail;
1513
d6ea93e3 1514
80876c20
LP		 1515 service_set_state(s, SERVICE_START_POST);
1516 } else
1517 service_enter_running(s, true);
034c6ed7
LP		 1518
1519 return;
1520
1521fail:
9e2f7c11 1522 log_warning("%s failed to run start-post executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1523 service_enter_stop(s, false);
1524}
1525
1526static void service_enter_start(Service *s) {
1527 pid_t pid;
1528 int r;
1529
1530 assert(s);
1531
1532 assert(s->exec_command[SERVICE_EXEC_START]);
1533 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1534
80876c20
LP		 1535 if (s->type == SERVICE_FORKING)
1536 service_unwatch_control_pid(s);
1537 else
1538 service_unwatch_main_pid(s);
1539
81a2b7ce
LP		 1540 if ((r = service_spawn(s,
1541 s->exec_command[SERVICE_EXEC_START],
05e343b7 1542 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS,
81a2b7ce
LP		 1543 true,
1544 true,
1545 true,
1546 &pid)) < 0)
034c6ed7
LP		 1547 goto fail;
1548
1549 if (s->type == SERVICE_SIMPLE) {
1550 /* For simple services we immediately start
1551 * the START_POST binaries. */
1552
1553 s->main_pid = pid;
1554 s->main_pid_known = true;
80876c20 1555
034c6ed7
LP		 1556 service_enter_start_post(s);
1557
1558 } else if (s->type == SERVICE_FORKING) {
1559
1560 /* For forking services we wait until the start
1561 * process exited. */
1562
1563 s->control_pid = pid;
80876c20 1564
a16e1123 1565 s->control_command_id = SERVICE_EXEC_START;
034c6ed7 1566 s->control_command = s->exec_command[SERVICE_EXEC_START];
80876c20
LP		 1567 service_set_state(s, SERVICE_START);
1568
05e343b7
LP		 1569 } else if (s->type == SERVICE_FINISH ||
1570 s->type == SERVICE_DBUS) {
7d55e835
LP		 1571
1572 /* For finishing services we wait until the start
1573 * process exited, too, but it is our main process. */
1574
05e343b7
LP		 1575 /* For D-Bus services we know the main pid right away,
1576 * but wait for the bus name to appear on the bus. */
1577
7d55e835 1578 s->main_pid = pid;
5e94833f 1579 s->main_pid_known = true;
80876c20 1580
80876c20 1581 service_set_state(s, SERVICE_START);
034c6ed7
LP		 1582 } else
1583 assert_not_reached("Unknown service type");
1584
1585 return;
1586
1587fail:
9e2f7c11 1588 log_warning("%s failed to run start exectuable: %s", UNIT(s)->meta.id, strerror(-r));
80876c20 1589 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 1590}
1591
1592static void service_enter_start_pre(Service *s) {
1593 int r;
1594
1595 assert(s);
1596
5e94833f
LP		 1597 service_unwatch_control_pid(s);
1598
a16e1123 1599 s->control_command_id = SERVICE_EXEC_START_PRE;
80876c20 1600 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
81a2b7ce
LP		 1601 if ((r = service_spawn(s,
1602 s->control_command,
1603 true,
1604 false,
1605 !s->permissions_start_only,
1606 !s->root_directory_start_only,
1607 &s->control_pid)) < 0)
034c6ed7
LP		 1608 goto fail;
1609
80876c20
LP		 1610 service_set_state(s, SERVICE_START_PRE);
1611 } else
034c6ed7
LP		 1612 service_enter_start(s);
1613
1614 return;
1615
1616fail:
9e2f7c11 1617 log_warning("%s failed to run start-pre executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1618 service_enter_dead(s, false, true);
1619}
1620
1621static void service_enter_restart(Service *s) {
1622 int r;
1623 assert(s);
1624
9ea9a0c8
LP		 1625 service_enter_dead(s, true, false);
1626
87f0e418 1627 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1628 goto fail;
1629
9e2f7c11 1630 log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
034c6ed7
LP		 1631 return;
1632
1633fail:
1634
9e2f7c11 1635 log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1636 service_enter_dead(s, false, false);
1637}
1638
1639static void service_enter_reload(Service *s) {
1640 int r;
1641
1642 assert(s);
1643
5e94833f
LP		 1644 service_unwatch_control_pid(s);
1645
a16e1123 1646 s->control_command_id = SERVICE_EXEC_RELOAD;
80876c20 1647 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
81a2b7ce
LP		 1648 if ((r = service_spawn(s,
1649 s->control_command,
1650 true,
1651 false,
1652 !s->permissions_start_only,
1653 !s->root_directory_start_only,
1654 &s->control_pid)) < 0)
034c6ed7
LP		 1655 goto fail;
1656
80876c20
LP		 1657 service_set_state(s, SERVICE_RELOAD);
1658 } else
1659 service_enter_running(s, true);
034c6ed7
LP		 1660
1661 return;
1662
1663fail:
9e2f7c11 1664 log_warning("%s failed to run reload executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1665 service_enter_stop(s, false);
1666}
1667
1668static void service_run_next(Service *s, bool success) {
1669 int r;
1670
1671 assert(s);
1672 assert(s->control_command);
1673 assert(s->control_command->command_next);
1674
1675 if (!success)
1676 s->failure = true;
1677
1678 s->control_command = s->control_command->command_next;
1679
5e94833f
LP		 1680 service_unwatch_control_pid(s);
1681
81a2b7ce
LP		 1682 if ((r = service_spawn(s,
1683 s->control_command,
1684 true,
1685 false,
1686 !s->permissions_start_only,
1687 !s->root_directory_start_only,
1688 &s->control_pid)) < 0)
034c6ed7
LP		 1689 goto fail;
1690
1691 return;
1692
1693fail:
9e2f7c11 1694 log_warning("%s failed to run spawn next executable: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7 1695
80876c20
LP		 1696 if (s->state == SERVICE_START_PRE)
1697 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1698 else if (s->state == SERVICE_STOP)
1699 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
034c6ed7
LP		 1700 else if (s->state == SERVICE_STOP_POST)
1701 service_enter_dead(s, false, true);
1702 else
1703 service_enter_stop(s, false);
5cb5a6ff
LP		 1704}
1705
87f0e418
LP		 1706static int service_start(Unit *u) {
1707 Service *s = SERVICE(u);
5cb5a6ff
LP		 1708
1709 assert(s);
1710
034c6ed7
LP		 1711 /* We cannot fulfill this request right now, try again later
1712 * please! */
1713 if (s->state == SERVICE_STOP ||
1714 s->state == SERVICE_STOP_SIGTERM ||
1715 s->state == SERVICE_STOP_SIGKILL ||
1716 s->state == SERVICE_STOP_POST ||
1717 s->state == SERVICE_FINAL_SIGTERM ||
1718 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1719 return -EAGAIN;
1720
034c6ed7
LP		 1721 /* Already on it! */
1722 if (s->state == SERVICE_START_PRE ||
1723 s->state == SERVICE_START ||
1724 s->state == SERVICE_START_POST)
1725 return 0;
1726
1727 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1728
1e2e8133
LP		 1729 /* Make sure we don't enter a busy loop of some kind. */
1730 if (!ratelimit_test(&s->ratelimit)) {
9e2f7c11 1731 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
d5159713 1732 return -ECANCELED;
1e2e8133
LP		 1733 }
1734
034c6ed7
LP		 1735 s->failure = false;
1736 s->main_pid_known = false;
3a762661 1737 s->allow_restart = true;
034c6ed7
LP		 1738
1739 service_enter_start_pre(s);
1740 return 0;
5cb5a6ff
LP		 1741}
1742
87f0e418
LP		 1743static int service_stop(Unit *u) {
1744 Service *s = SERVICE(u);
5cb5a6ff
LP		 1745
1746 assert(s);
1747
e537352b 1748 /* Cannot do this now */
034c6ed7
LP		 1749 if (s->state == SERVICE_START_PRE ||
1750 s->state == SERVICE_START ||
1751 s->state == SERVICE_START_POST ||
1752 s->state == SERVICE_RELOAD)
1753 return -EAGAIN;
1754
e537352b
LP		 1755 /* Already on it */
1756 if (s->state == SERVICE_STOP ||
1757 s->state == SERVICE_STOP_SIGTERM ||
1758 s->state == SERVICE_STOP_SIGKILL ||
1759 s->state == SERVICE_STOP_POST ||
1760 s->state == SERVICE_FINAL_SIGTERM ||
1761 s->state == SERVICE_FINAL_SIGKILL)
1762 return 0;
1763
034c6ed7
LP		 1764 if (s->state == SERVICE_AUTO_RESTART) {
1765 service_set_state(s, SERVICE_DEAD);
1766 return 0;
1767 }
1768
80876c20 1769 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
5cb5a6ff 1770
3a762661
LP		 1771 /* This is a user request, so don't do restarts on this
1772 * shutdown. */
1773 s->allow_restart = false;
1774
034c6ed7 1775 service_enter_stop(s, true);
5cb5a6ff
LP		 1776 return 0;
1777}
1778
87f0e418
LP		 1779static int service_reload(Unit *u) {
1780 Service *s = SERVICE(u);
034c6ed7
LP		 1781
1782 assert(s);
1783
80876c20 1784 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
034c6ed7
LP		 1785
1786 service_enter_reload(s);
5cb5a6ff
LP		 1787 return 0;
1788}
1789
87f0e418
LP		 1790static bool service_can_reload(Unit *u) {
1791 Service *s = SERVICE(u);
034c6ed7
LP		 1792
1793 assert(s);
1794
1795 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1796}
1797
a16e1123
LP		 1798static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1799 Service *s = SERVICE(u);
1800
1801 assert(u);
1802 assert(f);
1803 assert(fds);
1804
1805 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1806 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1807
1808 if (s->control_pid > 0)
1809 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) (s->control_pid));
1810
1811 if (s->main_pid > 0)
1812 unit_serialize_item_format(u, f, "main-pid", "%u", (unsigned) (s->main_pid));
1813
1814 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1815
1816 /* There's a minor uncleanliness here: if there are multiple
1817 * commands attached here, we will start from the first one
1818 * again */
1819 if (s->control_command_id >= 0)
825636e5 1820 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
a16e1123
LP		 1821
1822 if (s->socket_fd >= 0) {
1823 int copy;
1824
1825 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1826 return copy;
1827
1828 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1829 }
1830
1831 return 0;
1832}
1833
1834static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1835 Service *s = SERVICE(u);
1836 int r;
1837
1838 assert(u);
1839 assert(key);
1840 assert(value);
1841 assert(fds);
1842
1843 if (streq(key, "state")) {
1844 ServiceState state;
1845
1846 if ((state = service_state_from_string(value)) < 0)
1847 log_debug("Failed to parse state value %s", value);
1848 else
1849 s->deserialized_state = state;
1850 } else if (streq(key, "failure")) {
1851 int b;
1852
1853 if ((b = parse_boolean(value)) < 0)
1854 log_debug("Failed to parse failure value %s", value);
1855 else
1856 s->failure = b || s->failure;
1857 } else if (streq(key, "control-pid")) {
1858 unsigned pid;
1859
1860 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1861 log_debug("Failed to parse control-pid value %s", value);
1862 else
1863 s->control_pid = (pid_t) pid;
1864 } else if (streq(key, "main-pid")) {
1865 unsigned pid;
1866
1867 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1868 log_debug("Failed to parse main-pid value %s", value);
1869 else
1870 s->main_pid = (pid_t) pid;
1871 } else if (streq(key, "main-pid-known")) {
1872 int b;
1873
1874 if ((b = parse_boolean(value)) < 0)
1875 log_debug("Failed to parse main-pid-known value %s", value);
1876 else
1877 s->main_pid_known = b;
1878 } else if (streq(key, "control-command")) {
1879 ServiceExecCommand id;
1880
1881 if ((id = service_exec_command_from_string(value)) < 0)
1882 log_debug("Failed to parse exec-command value %s", value);
1883 else {
1884 s->control_command_id = id;
1885 s->control_command = s->exec_command[id];
1886 }
1887 } else if (streq(key, "socket-fd")) {
1888 int fd;
1889
1890 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1891 log_debug("Failed to parse socket-fd value %s", value);
1892 else {
1893
1894 if (s->socket_fd >= 0)
1895 close_nointr_nofail(s->socket_fd);
1896 s->socket_fd = fdset_remove(fds, fd);
1897 }
1898 } else
1899 log_debug("Unknown serialization key '%s'", key);
1900
1901 return 0;
1902}
1903
87f0e418
LP		 1904static UnitActiveState service_active_state(Unit *u) {
1905 assert(u);
5cb5a6ff 1906
acbb0225 1907 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1908}
1909
10a94420
LP		 1910static const char *service_sub_state_to_string(Unit *u) {
1911 assert(u);
1912
1913 return service_state_to_string(SERVICE(u)->state);
1914}
1915
701cc384
LP		 1916static bool service_check_gc(Unit *u) {
1917 Service *s = SERVICE(u);
1918
1919 assert(s);
1920
1921 return !!s->sysv_path;
1922}
1923
1924static bool service_check_snapshot(Unit *u) {
1925 Service *s = SERVICE(u);
1926
1927 assert(s);
1928
1929 return !s->got_socket_fd;
1930}
1931
87f0e418
LP		 1932static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1933 Service *s = SERVICE(u);
034c6ed7 1934 bool success;
5cb5a6ff
LP		 1935
1936 assert(s);
034c6ed7
LP		 1937 assert(pid >= 0);
1938
cb8a8f78 1939 success = is_clean_exit(code, status);
034c6ed7
LP		 1940 s->failure = s->failure || !success;
1941
1942 if (s->main_pid == pid) {
1943
1944 exec_status_fill(&s->main_exec_status, pid, code, status);
1945 s->main_pid = 0;
1946
7d55e835 1947 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
034c6ed7
LP		 1948 assert(s->exec_command[SERVICE_EXEC_START]);
1949 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1950 }
1951
9e2f7c11 1952 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 1953
1954 /* The service exited, so the service is officially
1955 * gone. */
1956
1957 switch (s->state) {
1958
1959 case SERVICE_START_POST:
1960 case SERVICE_RELOAD:
1961 case SERVICE_STOP:
1962 /* Need to wait until the operation is
1963 * done */
1964 break;
1965
7d55e835
LP		 1966 case SERVICE_START:
1967 assert(s->type == SERVICE_FINISH);
1968
1969 /* This was our main goal, so let's go on */
1970 if (success)
1971 service_enter_start_post(s);
1972 else
80876c20 1973 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
7d55e835
LP		 1974 break;
1975
034c6ed7 1976 case SERVICE_RUNNING:
80876c20 1977 service_enter_running(s, success);
034c6ed7
LP		 1978 break;
1979
1980 case SERVICE_STOP_SIGTERM:
1981 case SERVICE_STOP_SIGKILL:
1982
1983 if (!control_pid_good(s))
1984 service_enter_stop_post(s, success);
5cb5a6ff 1985
034c6ed7
LP		 1986 /* If there is still a control process, wait for that first */
1987 break;
5cb5a6ff 1988
034c6ed7
LP		 1989 default:
1990 assert_not_reached("Uh, main process died at wrong time.");
1991 }
5cb5a6ff 1992
034c6ed7 1993 } else if (s->control_pid == pid) {
034c6ed7 1994
a16e1123
LP		 1995 if (s->control_command)
1996 exec_status_fill(&s->control_command->exec_status, pid, code, status);
1997
034c6ed7
LP		 1998 s->control_pid = 0;
1999
9e2f7c11 2000 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 2001
2002 /* If we are shutting things down anyway we
2003 * don't care about failing commands. */
2004
a16e1123 2005 if (s->control_command && s->control_command->command_next && success) {
034c6ed7
LP		 2006
2007 /* There is another command to *
2008 * execute, so let's do that. */
2009
9e2f7c11 2010 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
034c6ed7
LP		 2011 service_run_next(s, success);
2012
80876c20 2013 } else {
034c6ed7
LP		 2014 /* No further commands for this step, so let's
2015 * figure out what to do next */
2016
a16e1123
LP		 2017 s->control_command = NULL;
2018 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2019
9e2f7c11 2020 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
bd982a8b 2021
034c6ed7
LP		 2022 switch (s->state) {
2023
2024 case SERVICE_START_PRE:
2025 if (success)
2026 service_enter_start(s);
2027 else
80876c20 2028 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2029 break;
2030
2031 case SERVICE_START:
2032 assert(s->type == SERVICE_FORKING);
2033
2034 /* Let's try to load the pid
2035 * file here if we can. We
2036 * ignore the return value,
2037 * since the PID file might
2038 * actually be created by a
2039 * START_POST script */
2040
2041 if (success) {
2042 if (s->pid_file)
2043 service_load_pid_file(s);
2044
2045 service_enter_start_post(s);
2046 } else
80876c20 2047 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2048
2049 break;
2050
2051 case SERVICE_START_POST:
2052 if (success && s->pid_file && !s->main_pid_known) {
2053 int r;
2054
2055 /* Hmm, let's see if we can
2056 * load the pid now after the
2057 * start-post scripts got
2058 * executed. */
2059
2060 if ((r = service_load_pid_file(s)) < 0)
9e2f7c11 2061 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
034c6ed7
LP		 2062 }
2063
2064 /* Fall through */
2065
2066 case SERVICE_RELOAD:
80876c20
LP		 2067 if (success)
2068 service_enter_running(s, true);
2069 else
034c6ed7
LP		 2070 service_enter_stop(s, false);
2071
2072 break;
2073
2074 case SERVICE_STOP:
80876c20 2075 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
034c6ed7
LP		 2076 break;
2077
2078 case SERVICE_STOP_SIGTERM:
2079 case SERVICE_STOP_SIGKILL:
2080 if (main_pid_good(s) <= 0)
2081 service_enter_stop_post(s, success);
2082
2083 /* If there is still a service
2084 * process around, wait until
2085 * that one quit, too */
2086 break;
2087
2088 case SERVICE_STOP_POST:
2089 case SERVICE_FINAL_SIGTERM:
2090 case SERVICE_FINAL_SIGKILL:
2091 service_enter_dead(s, success, true);
2092 break;
2093
2094 default:
2095 assert_not_reached("Uh, control process died at wrong time.");
2096 }
2097 }
2098 } else
2099 assert_not_reached("Got SIGCHLD for unkown PID");
2100}
2101
acbb0225 2102static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 2103 Service *s = SERVICE(u);
034c6ed7
LP		 2104
2105 assert(s);
2106 assert(elapsed == 1);
2107
acbb0225 2108 assert(w == &s->timer_watch);
034c6ed7
LP		 2109
2110 switch (s->state) {
2111
2112 case SERVICE_START_PRE:
2113 case SERVICE_START:
9e2f7c11 2114 log_warning("%s operation timed out. Terminating.", u->meta.id);
80876c20
LP		 2115 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2116 break;
2117
034c6ed7
LP		 2118 case SERVICE_START_POST:
2119 case SERVICE_RELOAD:
9e2f7c11 2120 log_warning("%s operation timed out. Stopping.", u->meta.id);
034c6ed7
LP		 2121 service_enter_stop(s, false);
2122 break;
2123
2124 case SERVICE_STOP:
9e2f7c11 2125 log_warning("%s stopping timed out. Terminating.", u->meta.id);
034c6ed7
LP		 2126 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2127 break;
2128
2129 case SERVICE_STOP_SIGTERM:
9e2f7c11 2130 log_warning("%s stopping timed out. Killing.", u->meta.id);
034c6ed7
LP		 2131 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2132 break;
2133
2134 case SERVICE_STOP_SIGKILL:
2135 /* Uh, wie sent a SIGKILL and it is still not gone?
2136 * Must be something we cannot kill, so let's just be
2137 * weirded out and continue */
2138
9e2f7c11 2139 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
034c6ed7
LP		 2140 service_enter_stop_post(s, false);
2141 break;
2142
2143 case SERVICE_STOP_POST:
9e2f7c11 2144 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
034c6ed7
LP		 2145 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2146 break;
2147
2148 case SERVICE_FINAL_SIGTERM:
9e2f7c11 2149 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
034c6ed7
LP		 2150 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2151 break;
2152
2153 case SERVICE_FINAL_SIGKILL:
9e2f7c11 2154 log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", u->meta.id);
034c6ed7
LP		 2155 service_enter_dead(s, false, true);
2156 break;
2157
2158 case SERVICE_AUTO_RESTART:
9e2f7c11 2159 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
034c6ed7
LP		 2160 service_enter_restart(s);
2161 break;
2162
2163 default:
2164 assert_not_reached("Timeout at wrong time.");
2165 }
5cb5a6ff
LP		 2166}
2167
8e274523
LP		 2168static void service_cgroup_notify_event(Unit *u) {
2169 Service *s = SERVICE(u);
2170
2171 assert(u);
2172
9e2f7c11 2173 log_debug("%s: cgroup is empty", u->meta.id);
8e274523
LP		 2174
2175 switch (s->state) {
2176
2177 /* Waiting for SIGCHLD is usually more interesting,
2178 * because it includes return codes/signals. Which is
2179 * why we ignore the cgroup events for most cases,
2180 * except when we don't know pid which to expect the
2181 * SIGCHLD for. */
2182
2183 case SERVICE_RUNNING:
80876c20 2184 service_enter_running(s, true);
8e274523
LP		 2185 break;
2186
2187 default:
2188 ;
2189 }
2190}
2191
2c4104f0 2192static int service_enumerate(Manager *m) {
2c4104f0
LP		 2193 char **p;
2194 unsigned i;
2195 DIR *d = NULL;
2196 char *path = NULL, *fpath = NULL, *name = NULL;
2197 int r;
2198
2199 assert(m);
2200
5e177ece 2201 STRV_FOREACH(p, m->sysvrcnd_path)
09cd1ab1 2202 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2c4104f0
LP		 2203 struct dirent *de;
2204
2205 free(path);
2206 path = NULL;
09cd1ab1 2207 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2c4104f0
LP		 2208 r = -ENOMEM;
2209 goto finish;
2210 }
2211
2212 if (d)
2213 closedir(d);
2214
2215 if (!(d = opendir(path))) {
2216 if (errno != ENOENT)
2217 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2218
2219 continue;
2220 }
2221
2222 while ((de = readdir(d))) {
6542952f 2223 Unit *service;
db06e3b6 2224 int a, b;
2c4104f0
LP		 2225
2226 if (ignore_file(de->d_name))
2227 continue;
2228
2229 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2230 continue;
2231
2232 if (strlen(de->d_name) < 4)
2233 continue;
2234
db06e3b6
LP		 2235 a = undecchar(de->d_name[1]);
2236 b = undecchar(de->d_name[2]);
2237
2238 if (a < 0 || b < 0)
2239 continue;
2240
2c4104f0
LP		 2241 free(fpath);
2242 fpath = NULL;
09cd1ab1 2243 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2c4104f0
LP		 2244 r = -ENOMEM;
2245 goto finish;
2246 }
2247
2248 if (access(fpath, X_OK) < 0) {
2249
2250 if (errno != ENOENT)
2251 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2252
2253 continue;
2254 }
2255
2256 free(name);
b7ccee3c 2257 if (!(name = sysv_translate_name(de->d_name + 3))) {
2c4104f0
LP		 2258 r = -ENOMEM;
2259 goto finish;
2260 }
2261
fbe9f3a9
LP		 2262 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0) {
2263 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2264 continue;
2265 }
2c4104f0 2266
09cd1ab1
LP		 2267 if (de->d_name[0] == 'S' &&
2268 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_BASIC))
fbe9f3a9
LP		 2269 SERVICE(service)->sysv_start_priority =
2270 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
db06e3b6
LP		 2271
2272 manager_dispatch_load_queue(m);
2273 service = unit_follow_merge(service);
2274
2c4104f0 2275 if (de->d_name[0] == 'S') {
6542952f
LP		 2276 Unit *runlevel_target;
2277
09cd1ab1 2278 if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
6542952f
LP		 2279 goto finish;
2280
2281 if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2c4104f0
LP		 2282 goto finish;
2283
a0fcc5f6 2284 if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2c4104f0 2285 goto finish;
23a177ef 2286
09cd1ab1 2287 } else if (de->d_name[0] == 'K' && rcnd_table[i].type == RUNLEVEL_DOWN) {
6542952f
LP		 2288 Unit *shutdown_target;
2289
23a177ef
LP		 2290 /* We honour K links only for
2291 * halt/reboot. For the normal
2292 * runlevels we assume the
2293 * stop jobs will be
2294 * implicitly added by the
6542952f
LP		 2295 * core logic. Also, we don't
2296 * really distuingish here
2297 * between the runlevels 0 and
2298 * 6 and just add them to the
2299 * special shutdown target. */
2300
2301 if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2302 goto finish;
23a177ef 2303
a0fcc5f6 2304 if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2c4104f0
LP		 2305 goto finish;
2306
a0fcc5f6 2307 if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2c4104f0
LP		 2308 goto finish;
2309 }
2310 }
2311 }
2312
2313 r = 0;
2314
2315finish:
2316 free(path);
2317 free(fpath);
2318 free(name);
fbe9f3a9
LP		 2319
2320 if (d)
2321 closedir(d);
2c4104f0
LP		 2322
2323 return r;
2324}
2325
05e343b7
LP		 2326static void service_bus_name_owner_change(
2327 Unit *u,
2328 const char *name,
2329 const char *old_owner,
2330 const char *new_owner) {
2331
2332 Service *s = SERVICE(u);
2333
2334 assert(s);
2335 assert(name);
2336
2337 assert(streq(s->bus_name, name));
2338 assert(old_owner || new_owner);
2339
2340 if (old_owner && new_owner)
2341 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2342 else if (old_owner)
2343 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2344 else
2345 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2346
2347 s->bus_name_good = !!new_owner;
2348
2349 if (s->type == SERVICE_DBUS) {
2350
2351 /* service_enter_running() will figure out what to
2352 * do */
2353 if (s->state == SERVICE_RUNNING)
2354 service_enter_running(s, true);
2355 else if (s->state == SERVICE_START && new_owner)
2356 service_enter_start_post(s);
2357
2358 } else if (new_owner &&
2359 s->main_pid <= 0 &&
2360 (s->state == SERVICE_START ||
2361 s->state == SERVICE_START_POST ||
2362 s->state == SERVICE_RUNNING ||
2363 s->state == SERVICE_RELOAD)) {
2364
2365 /* Try to acquire PID from bus service */
2366 log_debug("Trying to acquire PID from D-Bus name...");
2367
2368 bus_query_pid(u->meta.manager, name);
2369 }
2370}
2371
2372static void service_bus_query_pid_done(
2373 Unit *u,
2374 const char *name,
2375 pid_t pid) {
2376
2377 Service *s = SERVICE(u);
2378
2379 assert(s);
2380 assert(name);
2381
2382 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2383
2384 if (s->main_pid <= 0 &&
2385 (s->state == SERVICE_START ||
2386 s->state == SERVICE_START_POST ||
2387 s->state == SERVICE_RUNNING ||
2388 s->state == SERVICE_RELOAD))
2389 s->main_pid = pid;
2390}
2391
4f2d528d
LP		 2392int service_set_socket_fd(Service *s, int fd) {
2393 assert(s);
2394 assert(fd >= 0);
2395
2396 /* This is called by the socket code when instantiating a new
2397 * service for a stream socket and the socket needs to be
2398 * configured. */
2399
2400 if (UNIT(s)->meta.load_state != UNIT_LOADED)
2401 return -EINVAL;
2402
2403 if (s->socket_fd >= 0)
2404 return -EBUSY;
2405
2406 if (s->state != SERVICE_DEAD)
2407 return -EAGAIN;
2408
2409 s->socket_fd = fd;
701cc384 2410 s->got_socket_fd = true;
4f2d528d
LP		 2411 return 0;
2412}
2413
94f04347
LP		 2414static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2415 [SERVICE_DEAD] = "dead",
2416 [SERVICE_START_PRE] = "start-pre",
2417 [SERVICE_START] = "start",
2418 [SERVICE_START_POST] = "start-post",
2419 [SERVICE_RUNNING] = "running",
80876c20 2420 [SERVICE_EXITED] = "exited",
94f04347
LP		 2421 [SERVICE_RELOAD] = "reload",
2422 [SERVICE_STOP] = "stop",
2423 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2424 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2425 [SERVICE_STOP_POST] = "stop-post",
2426 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2427 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
2428 [SERVICE_MAINTAINANCE] = "maintainance",
2429 [SERVICE_AUTO_RESTART] = "auto-restart",
2430};
2431
2432DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2433
2434static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2435 [SERVICE_ONCE] = "once",
2436 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
40531a55 2437 [SERVICE_RESTART_ALWAYS] = "restart-always",
94f04347
LP		 2438};
2439
2440DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2441
2442static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2443 [SERVICE_FORKING] = "forking",
2444 [SERVICE_SIMPLE] = "simple",
05e343b7
LP		 2445 [SERVICE_FINISH] = "finish",
2446 [SERVICE_DBUS] = "dbus"
94f04347
LP		 2447};
2448
2449DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2450
e537352b 2451static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
94f04347
LP		 2452 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2453 [SERVICE_EXEC_START] = "ExecStart",
2454 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2455 [SERVICE_EXEC_RELOAD] = "ExecReload",
2456 [SERVICE_EXEC_STOP] = "ExecStop",
2457 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2458};
2459
2460DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2461
87f0e418 2462const UnitVTable service_vtable = {
5cb5a6ff
LP		 2463 .suffix = ".service",
2464
034c6ed7
LP		 2465 .init = service_init,
2466 .done = service_done,
a16e1123
LP		 2467 .load = service_load,
2468
2469 .coldplug = service_coldplug,
034c6ed7 2470
5cb5a6ff
LP		 2471 .dump = service_dump,
2472
2473 .start = service_start,
2474 .stop = service_stop,
2475 .reload = service_reload,
2476
034c6ed7
LP		 2477 .can_reload = service_can_reload,
2478
a16e1123
LP		 2479 .serialize = service_serialize,
2480 .deserialize_item = service_deserialize_item,
2481
5cb5a6ff 2482 .active_state = service_active_state,
10a94420 2483 .sub_state_to_string = service_sub_state_to_string,
5cb5a6ff 2484
701cc384
LP		 2485 .check_gc = service_check_gc,
2486 .check_snapshot = service_check_snapshot,
2487
034c6ed7
LP		 2488 .sigchld_event = service_sigchld_event,
2489 .timer_event = service_timer_event,
2c4104f0 2490
8e274523
LP		 2491 .cgroup_notify_empty = service_cgroup_notify_event,
2492
05e343b7
LP		 2493 .bus_name_owner_change = service_bus_name_owner_change,
2494 .bus_query_pid_done = service_bus_query_pid_done,
2495
4139c1b2
LP		 2496 .bus_message_handler = bus_service_message_handler,
2497
2c4104f0 2498 .enumerate = service_enumerate
5cb5a6ff 2499};
Unnamed repository; edit this file 'description' to name the repository.