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sd-daemon: extend return value logic of sd_notify()
[thirdparty/systemd.git] / src / service.c
CommitLineData
5cb5a6ff
LP		 1/*-*- Mode: C; c-basic-offset: 8 -*-*/
2
a7334b09
LP		 3/***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20***/
21
5cb5a6ff 22#include <errno.h>
034c6ed7 23#include <signal.h>
2c4104f0
LP		 24#include <dirent.h>
25#include <unistd.h>
5cb5a6ff 26
87f0e418 27#include "unit.h"
5cb5a6ff
LP		 28#include "service.h"
29#include "load-fragment.h"
30#include "load-dropin.h"
034c6ed7 31#include "log.h"
2c4104f0 32#include "strv.h"
9e2f7c11 33#include "unit-name.h"
4139c1b2 34#include "dbus-service.h"
2c4104f0
LP		 35
36#define COMMENTS "#;\n"
37#define NEWLINES "\n\r"
38#define LINE_MAX 4096
034c6ed7 39
09cd1ab1
LP		 40typedef enum RunlevelType {
41 RUNLEVEL_UP,
42 RUNLEVEL_DOWN,
fc5df99e 43 RUNLEVEL_SYSINIT
09cd1ab1
LP		 44} RunlevelType;
45
46static const struct {
47 const char *path;
48 const char *target;
49 const RunlevelType type;
50} rcnd_table[] = {
fbe9f3a9
LP		 51 /* Standard SysV runlevels */
52 { "rc0.d", SPECIAL_RUNLEVEL0_TARGET, RUNLEVEL_DOWN },
53 { "rc1.d", SPECIAL_RUNLEVEL1_TARGET, RUNLEVEL_UP },
54 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
55 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
56 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
57 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
58 { "rc6.d", SPECIAL_RUNLEVEL6_TARGET, RUNLEVEL_DOWN },
59
cfe243e3 60 /* SUSE style boot.d */
fc5df99e 61 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
fbe9f3a9
LP		 62
63 /* Debian style rcS.d */
fc5df99e 64 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
23a177ef
LP		 65};
66
09cd1ab1 67#define RUNLEVELS_UP "12345"
fbe9f3a9
LP		 68/* #define RUNLEVELS_DOWN "06" */
69/* #define RUNLEVELS_BOOT "bBsS" */
09cd1ab1 70
acbb0225 71static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
87f0e418
LP		 72 [SERVICE_DEAD] = UNIT_INACTIVE,
73 [SERVICE_START_PRE] = UNIT_ACTIVATING,
74 [SERVICE_START] = UNIT_ACTIVATING,
75 [SERVICE_START_POST] = UNIT_ACTIVATING,
76 [SERVICE_RUNNING] = UNIT_ACTIVE,
80876c20 77 [SERVICE_EXITED] = UNIT_ACTIVE,
87f0e418
LP		 78 [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
79 [SERVICE_STOP] = UNIT_DEACTIVATING,
80 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
81 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
82 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
83 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
84 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
18c78fb1 85 [SERVICE_MAINTENANCE] = UNIT_INACTIVE,
87f0e418 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
8c47c732
LP		 152 free(s->status_text);
153 s->status_text = NULL;
154
44d8db9e 155 exec_context_done(&s->exec_context);
e537352b 156 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
44d8db9e
LP		 157 s->control_command = NULL;
158
159 /* This will leak a process, but at least no memory or any of
160 * our resources */
5e94833f
LP		 161 service_unwatch_main_pid(s);
162 service_unwatch_control_pid(s);
44d8db9e 163
05e343b7
LP		 164 if (s->bus_name) {
165 unit_unwatch_bus_name(UNIT(u), s->bus_name);
166 free(s->bus_name);
167 s->bus_name = NULL;
168 }
169
4f2d528d
LP		 170 service_close_socket_fd(s);
171
acbb0225 172 unit_unwatch_timer(u, &s->timer_watch);
44d8db9e
LP		 173}
174
b7ccee3c
LP		 175static char *sysv_translate_name(const char *name) {
176 char *r;
177
178 if (!(r = new(char, strlen(name) + sizeof(".service"))))
179 return NULL;
180
181 if (startswith(name, "boot."))
182 /* Drop SuSE-style boot. prefix */
183 strcpy(stpcpy(r, name + 5), ".service");
184 else if (endswith(name, ".sh"))
185 /* Drop Debian-style .sh suffix */
186 strcpy(stpcpy(r, name) - 3, ".service");
187 else
188 /* Normal init scripts */
189 strcpy(stpcpy(r, name), ".service");
190
191 return r;
192}
193
194static int sysv_translate_facility(const char *name, char **_r) {
2c4104f0
LP		 195
196 static const char * const table[] = {
6464aa08 197 /* LSB defined facilities */
2c4104f0
LP		 198 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
199 "$network", SPECIAL_NETWORK_TARGET,
200 "$named", SPECIAL_NSS_LOOKUP_TARGET,
201 "$portmap", SPECIAL_RPCBIND_TARGET,
202 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
203 "$syslog", SPECIAL_SYSLOG_TARGET,
6464aa08
LP		 204 "$time", SPECIAL_RTC_SET_TARGET,
205
206 /* Debian extensions */
207 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
208 "$mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
1e287fe3 209 "$x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE
2c4104f0
LP		 210 };
211
212 unsigned i;
213 char *r;
214
215 for (i = 0; i < ELEMENTSOF(table); i += 2)
216 if (streq(table[i], name)) {
217 if (!(r = strdup(table[i+1])))
218 return -ENOMEM;
219
220 goto finish;
221 }
222
223 if (*name == '$')
224 return 0;
225
b7ccee3c 226 if (!(r = sysv_translate_name(name)))
2c4104f0
LP		 227 return -ENOMEM;
228
229finish:
230
231 if (_r)
232 *_r = r;
233
234 return 1;
235}
236
56d748b4 237static int sysv_fix_order(Service *s) {
2c4104f0
LP		 238 Meta *other;
239 int r;
240
241 assert(s);
242
243 if (s->sysv_start_priority < 0)
244 return 0;
245
23a177ef
LP		 246 /* For each pair of services where at least one lacks a LSB
247 * header, we use the start priority value to order things. */
2c4104f0
LP		 248
249 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
250 Service *t;
251 UnitDependency d;
252
253 t = (Service*) other;
254
255 if (s == t)
256 continue;
257
258 if (t->sysv_start_priority < 0)
259 continue;
260
51a1a79d
LP		 261 /* If both units have modern headers we don't care
262 * about the priorities */
263 if ((!s->sysv_path || s->sysv_has_lsb) &&
264 (!t->sysv_path || t->sysv_has_lsb))
23a177ef
LP		 265 continue;
266
2c4104f0
LP		 267 if (t->sysv_start_priority < s->sysv_start_priority)
268 d = UNIT_AFTER;
269 else if (t->sysv_start_priority > s->sysv_start_priority)
270 d = UNIT_BEFORE;
271 else
272 continue;
273
274 /* FIXME: Maybe we should compare the name here lexicographically? */
275
701cc384 276 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
2c4104f0
LP		 277 return r;
278 }
279
280 return 0;
281}
282
283static ExecCommand *exec_command_new(const char *path, const char *arg1) {
284 ExecCommand *c;
285
286 if (!(c = new0(ExecCommand, 1)))
287 return NULL;
288
289 if (!(c->path = strdup(path))) {
290 free(c);
291 return NULL;
292 }
293
294 if (!(c->argv = strv_new(path, arg1, NULL))) {
295 free(c->path);
296 free(c);
297 return NULL;
298 }
299
300 return c;
301}
302
303static int sysv_exec_commands(Service *s) {
304 ExecCommand *c;
305
306 assert(s);
307 assert(s->sysv_path);
308
309 if (!(c = exec_command_new(s->sysv_path, "start")))
310 return -ENOMEM;
311 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
312
313 if (!(c = exec_command_new(s->sysv_path, "stop")))
314 return -ENOMEM;
315 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
316
317 if (!(c = exec_command_new(s->sysv_path, "reload")))
318 return -ENOMEM;
319 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
320
321 return 0;
322}
323
e537352b 324static int service_load_sysv_path(Service *s, const char *path) {
2c4104f0
LP		 325 FILE *f;
326 Unit *u;
327 unsigned line = 0;
328 int r;
329 enum {
330 NORMAL,
331 DESCRIPTION,
332 LSB,
333 LSB_DESCRIPTION
334 } state = NORMAL;
23a177ef
LP		 335
336 assert(s);
337 assert(path);
2c4104f0
LP		 338
339 u = UNIT(s);
340
341 if (!(f = fopen(path, "re"))) {
342 r = errno == ENOENT ? 0 : -errno;
343 goto finish;
344 }
345
2c4104f0
LP		 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 652 /* Special setting for all SysV services */
1f48cf56 653 s->type = SERVICE_FORKING;
80876c20 654 s->valid_no_process = true;
b29a8e58 655 s->kill_mode = KILL_PROCESS_GROUP;
1f48cf56 656 s->restart = SERVICE_ONCE;
80876c20 657
e537352b 658 u->meta.load_state = UNIT_LOADED;
23a177ef 659 r = 0;
2c4104f0
LP		 660
661finish:
662
663 if (f)
664 fclose(f);
665
666 return r;
667}
668
e537352b 669static int service_load_sysv_name(Service *s, const char *name) {
2c4104f0
LP		 670 char **p;
671
672 assert(s);
673 assert(name);
674
d017c6ca
LP		 675 /* For SysV services we strip the boot. or .sh
676 * prefixes/suffixes. */
677 if (startswith(name, "boot.") ||
678 endswith(name, ".sh.service"))
679 return -ENOENT;
680
84e3543e 681 STRV_FOREACH(p, UNIT(s)->meta.manager->lookup_paths.sysvinit_path) {
2c4104f0
LP		 682 char *path;
683 int r;
684
685 if (asprintf(&path, "%s/%s", *p, name) < 0)
686 return -ENOMEM;
687
688 assert(endswith(path, ".service"));
689 path[strlen(path)-8] = 0;
690
e537352b 691 r = service_load_sysv_path(s, path);
fbe9f3a9
LP		 692
693 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
d017c6ca 694 /* Try Debian style xxx.sh source'able init scripts */
fbe9f3a9
LP		 695 strcat(path, ".sh");
696 r = service_load_sysv_path(s, path);
697 }
698
2c4104f0
LP		 699 free(path);
700
fbe9f3a9 701 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
cfe243e3 702 /* Try SUSE style boot.xxx init scripts */
fbe9f3a9
LP		 703
704 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
705 return -ENOMEM;
706
707 path[strlen(path)-8] = 0;
708 r = service_load_sysv_path(s, path);
709 free(path);
710 }
711
23a177ef 712 if (r < 0)
2c4104f0 713 return r;
23a177ef 714
e537352b 715 if ((UNIT(s)->meta.load_state != UNIT_STUB))
23a177ef 716 break;
2c4104f0
LP		 717 }
718
719 return 0;
720}
721
e537352b 722static int service_load_sysv(Service *s) {
2c4104f0
LP		 723 const char *t;
724 Iterator i;
725 int r;
726
5cb5a6ff
LP		 727 assert(s);
728
729 /* Load service data from SysV init scripts, preferably with
730 * LSB headers ... */
731
84e3543e 732 if (strv_isempty(UNIT(s)->meta.manager->lookup_paths.sysvinit_path))
2c4104f0
LP		 733 return 0;
734
9e2f7c11 735 if ((t = UNIT(s)->meta.id))
e537352b 736 if ((r = service_load_sysv_name(s, t)) < 0)
2c4104f0
LP		 737 return r;
738
e537352b 739 if (UNIT(s)->meta.load_state == UNIT_STUB)
23a177ef 740 SET_FOREACH(t, UNIT(s)->meta.names, i) {
9e2f7c11 741 if (t == UNIT(s)->meta.id)
e537352b
LP		 742 continue;
743
744 if ((r == service_load_sysv_name(s, t)) < 0)
23a177ef
LP		 745 return r;
746
e537352b 747 if (UNIT(s)->meta.load_state != UNIT_STUB)
23a177ef
LP		 748 break;
749 }
2c4104f0
LP		 750
751 return 0;
5cb5a6ff
LP		 752}
753
05e343b7
LP		 754static int service_add_bus_name(Service *s) {
755 char *n;
756 int r;
757
758 assert(s);
759 assert(s->bus_name);
760
761 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
762 return 0;
763
764 r = unit_merge_by_name(UNIT(s), n);
765 free(n);
766
767 return r;
768}
769
243b1432
LP		 770static int service_verify(Service *s) {
771 assert(s);
772
773 if (UNIT(s)->meta.load_state != UNIT_LOADED)
774 return 0;
775
776 if (!s->exec_command[SERVICE_EXEC_START]) {
9e2f7c11 777 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
243b1432
LP		 778 return -EINVAL;
779 }
780
05e343b7
LP		 781 if (s->type == SERVICE_DBUS && !s->bus_name) {
782 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
783 return -EINVAL;
784 }
785
243b1432
LP		 786 return 0;
787}
788
e537352b
LP		 789static int service_load(Unit *u) {
790 int r;
791 Service *s = SERVICE(u);
792
793 assert(s);
1e2e8133 794
5cb5a6ff 795 /* Load a .service file */
e537352b 796 if ((r = unit_load_fragment(u)) < 0)
5cb5a6ff
LP		 797 return r;
798
bd77d0fc 799 /* Load a classic init script as a fallback, if we couldn't find anything */
e537352b
LP		 800 if (u->meta.load_state == UNIT_STUB)
801 if ((r = service_load_sysv(s)) < 0)
23a177ef 802 return r;
d46de8a1 803
23a177ef 804 /* Still nothing found? Then let's give up */
e537352b 805 if (u->meta.load_state == UNIT_STUB)
23a177ef 806 return -ENOENT;
034c6ed7 807
23a177ef
LP		 808 /* We were able to load something, then let's add in the
809 * dropin directories. */
810 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 811 return r;
23a177ef
LP		 812
813 /* This is a new unit? Then let's add in some extras */
e537352b 814 if (u->meta.load_state == UNIT_LOADED) {
23a177ef
LP		 815 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
816 return r;
817
818 if ((r = unit_add_default_cgroup(u)) < 0)
819 return r;
820
56d748b4 821 if ((r = sysv_fix_order(s)) < 0)
23a177ef 822 return r;
05e343b7
LP		 823
824 if (s->bus_name) {
825 if ((r = service_add_bus_name(s)) < 0)
826 return r;
827
828 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
829 return r;
830 }
8e274523
LP		 831 }
832
243b1432 833 return service_verify(s);
034c6ed7
LP		 834}
835
87f0e418 836static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 837
5cb5a6ff 838 ServiceExecCommand c;
87f0e418 839 Service *s = SERVICE(u);
47be870b
LP		 840 const char *prefix2;
841 char *p2;
5cb5a6ff
LP		 842
843 assert(s);
844
47be870b
LP		 845 p2 = strappend(prefix, "\t");
846 prefix2 = p2 ? p2 : prefix;
44d8db9e 847
5cb5a6ff 848 fprintf(f,
81a2b7ce
LP		 849 "%sService State: %s\n"
850 "%sPermissionsStartOnly: %s\n"
8e274523 851 "%sRootDirectoryStartOnly: %s\n"
03d6ab85 852 "%sValidNoProcess: %s\n"
50159e6a 853 "%sKillMode: %s\n"
03d6ab85 854 "%sType: %s\n",
81a2b7ce
LP		 855 prefix, service_state_to_string(s->state),
856 prefix, yes_no(s->permissions_start_only),
8e274523 857 prefix, yes_no(s->root_directory_start_only),
03d6ab85 858 prefix, yes_no(s->valid_no_process),
50159e6a 859 prefix, kill_mode_to_string(s->kill_mode),
03d6ab85 860 prefix, service_type_to_string(s->type));
5cb5a6ff 861
70123e68
LP		 862 if (s->control_pid > 0)
863 fprintf(f,
864 "%sControl PID: %llu\n",
865 prefix, (unsigned long long) s->control_pid);
866
867 if (s->main_pid > 0)
868 fprintf(f,
869 "%sMain PID: %llu\n",
870 prefix, (unsigned long long) s->main_pid);
871
034c6ed7
LP		 872 if (s->pid_file)
873 fprintf(f,
874 "%sPIDFile: %s\n",
875 prefix, s->pid_file);
876
05e343b7
LP		 877 if (s->bus_name)
878 fprintf(f,
879 "%sBusName: %s\n"
880 "%sBus Name Good: %s\n",
881 prefix, s->bus_name,
882 prefix, yes_no(s->bus_name_good));
883
5cb5a6ff
LP		 884 exec_context_dump(&s->exec_context, f, prefix);
885
e537352b 886 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
5cb5a6ff 887
44d8db9e
LP		 888 if (!s->exec_command[c])
889 continue;
890
40d50879 891 fprintf(f, "%s-> %s:\n",
94f04347 892 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 893
894 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 895 }
44d8db9e 896
2c4104f0
LP		 897 if (s->sysv_path)
898 fprintf(f,
23a177ef
LP		 899 "%sSysV Init Script Path: %s\n"
900 "%sSysV Init Script has LSB Header: %s\n",
901 prefix, s->sysv_path,
902 prefix, yes_no(s->sysv_has_lsb));
2c4104f0
LP		 903
904 if (s->sysv_start_priority >= 0)
905 fprintf(f,
23a177ef 906 "%sSysVStartPriority: %i\n",
2c4104f0
LP		 907 prefix, s->sysv_start_priority);
908
8309400a
LP		 909 if (s->sysv_runlevels)
910 fprintf(f, "%sSysVRunLevels: %s\n",
911 prefix, s->sysv_runlevels);
23a177ef 912
8c47c732
LP		 913 if (s->status_text)
914 fprintf(f, "%sStatus Text: %s\n",
915 prefix, s->status_text);
916
47be870b 917 free(p2);
5cb5a6ff
LP		 918}
919
034c6ed7
LP		 920static int service_load_pid_file(Service *s) {
921 char *k;
922 unsigned long p;
923 int r;
924
925 assert(s);
926
927 if (s->main_pid_known)
928 return 0;
929
5e94833f
LP		 930 assert(s->main_pid <= 0);
931
034c6ed7
LP		 932 if (!s->pid_file)
933 return -ENOENT;
934
935 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
936 return r;
937
938 if ((r = safe_atolu(k, &p)) < 0) {
939 free(k);
940 return r;
941 }
942
943 if ((unsigned long) (pid_t) p != p)
944 return -ERANGE;
945
406eaf93
LP		 946 if (p <= 1)
947 return -ERANGE;
948
b8c597d5
LP		 949 if (kill((pid_t) p, 0) < 0 && errno != EPERM) {
950 log_warning("PID %llu read from file %s does not exist. Your service or init script might be broken.",
951 (unsigned long long) p, s->pid_file);
952 return -ESRCH;
953 }
954
16f6025e
LP		 955 if ((r = unit_watch_pid(UNIT(s), (pid_t) p)) < 0)
956 /* FIXME: we need to do something here */
957 return r;
958
b8c597d5 959 s->main_pid = (pid_t) p;
034c6ed7
LP		 960 s->main_pid_known = true;
961
962 return 0;
963}
964
3e33402a
LP		 965static int service_get_sockets(Service *s, Set **_set) {
966 Set *set;
ceee3d82
LP		 967 Iterator i;
968 char *t;
3e33402a 969 int r;
ceee3d82
LP		 970
971 assert(s);
3e33402a
LP		 972 assert(_set);
973
974 /* Collects all Socket objects that belong to this
975 * service. Note that a service might have multiple sockets
976 * via multiple names. */
977
978 if (!(set = set_new(NULL, NULL)))
979 return -ENOMEM;
ceee3d82
LP		 980
981 SET_FOREACH(t, UNIT(s)->meta.names, i) {
982 char *k;
983 Unit *p;
984
985 /* Look for all socket objects that go by any of our
986 * units and collect their fds */
987
3e33402a
LP		 988 if (!(k = unit_name_change_suffix(t, ".socket"))) {
989 r = -ENOMEM;
990 goto fail;
991 }
ceee3d82
LP		 992
993 p = manager_get_unit(UNIT(s)->meta.manager, k);
994 free(k);
995
8d567588
LP		 996 if (!p)
997 continue;
ceee3d82 998
3e33402a
LP		 999 if ((r = set_put(set, p)) < 0)
1000 goto fail;
ceee3d82
LP		 1001 }
1002
3e33402a
LP		 1003 *_set = set;
1004 return 0;
1005
1006fail:
1007 set_free(set);
1008 return r;
1009}
1010
e537352b 1011static int service_notify_sockets_dead(Service *s) {
3e33402a
LP		 1012 Iterator i;
1013 Set *set;
47be870b 1014 Socket *sock;
3e33402a
LP		 1015 int r;
1016
1017 assert(s);
1018
1019 /* Notifies all our sockets when we die */
3e33402a
LP		 1020 if ((r = service_get_sockets(s, &set)) < 0)
1021 return r;
1022
47be870b
LP		 1023 SET_FOREACH(sock, set, i)
1024 socket_notify_service_dead(sock);
3e33402a
LP		 1025
1026 set_free(set);
1027
ceee3d82
LP		 1028 return 0;
1029}
1030
034c6ed7
LP		 1031static void service_set_state(Service *s, ServiceState state) {
1032 ServiceState old_state;
5cb5a6ff
LP		 1033 assert(s);
1034
034c6ed7 1035 old_state = s->state;
5cb5a6ff 1036 s->state = state;
034c6ed7
LP		 1037
1038 if (state != SERVICE_START_PRE &&
1039 state != SERVICE_START &&
1040 state != SERVICE_START_POST &&
1041 state != SERVICE_RELOAD &&
1042 state != SERVICE_STOP &&
1043 state != SERVICE_STOP_SIGTERM &&
1044 state != SERVICE_STOP_SIGKILL &&
1045 state != SERVICE_STOP_POST &&
1046 state != SERVICE_FINAL_SIGTERM &&
1047 state != SERVICE_FINAL_SIGKILL &&
1048 state != SERVICE_AUTO_RESTART)
acbb0225 1049 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1050
7d55e835
LP		 1051 if (state != SERVICE_START &&
1052 state != SERVICE_START_POST &&
034c6ed7
LP		 1053 state != SERVICE_RUNNING &&
1054 state != SERVICE_RELOAD &&
1055 state != SERVICE_STOP &&
1056 state != SERVICE_STOP_SIGTERM &&
1057 state != SERVICE_STOP_SIGKILL)
5e94833f 1058 service_unwatch_main_pid(s);
034c6ed7
LP		 1059
1060 if (state != SERVICE_START_PRE &&
1061 state != SERVICE_START &&
1062 state != SERVICE_START_POST &&
1063 state != SERVICE_RELOAD &&
1064 state != SERVICE_STOP &&
1065 state != SERVICE_STOP_SIGTERM &&
1066 state != SERVICE_STOP_SIGKILL &&
1067 state != SERVICE_STOP_POST &&
1068 state != SERVICE_FINAL_SIGTERM &&
e537352b 1069 state != SERVICE_FINAL_SIGKILL) {
5e94833f 1070 service_unwatch_control_pid(s);
034c6ed7 1071 s->control_command = NULL;
a16e1123 1072 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
e537352b 1073 }
034c6ed7 1074
ceee3d82
LP		 1075 if (state == SERVICE_DEAD ||
1076 state == SERVICE_STOP ||
1077 state == SERVICE_STOP_SIGTERM ||
1078 state == SERVICE_STOP_SIGKILL ||
1079 state == SERVICE_STOP_POST ||
1080 state == SERVICE_FINAL_SIGTERM ||
1081 state == SERVICE_FINAL_SIGKILL ||
18c78fb1 1082 state == SERVICE_MAINTENANCE ||
ceee3d82 1083 state == SERVICE_AUTO_RESTART)
e537352b 1084 service_notify_sockets_dead(s);
ceee3d82 1085
4f2d528d
LP		 1086 if (state != SERVICE_START_PRE &&
1087 state != SERVICE_START &&
1088 !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1089 service_close_socket_fd(s);
1090
e537352b 1091 if (old_state != state)
40d50879 1092 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 1093
1094 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 1095}
1096
a16e1123
LP		 1097static int service_coldplug(Unit *u) {
1098 Service *s = SERVICE(u);
1099 int r;
1100
1101 assert(s);
1102 assert(s->state == SERVICE_DEAD);
1103
1104 if (s->deserialized_state != s->state) {
1105
1106 if (s->deserialized_state == SERVICE_START_PRE ||
1107 s->deserialized_state == SERVICE_START ||
1108 s->deserialized_state == SERVICE_START_POST ||
1109 s->deserialized_state == SERVICE_RELOAD ||
1110 s->deserialized_state == SERVICE_STOP ||
1111 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1112 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1113 s->deserialized_state == SERVICE_STOP_POST ||
1114 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1115 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
e558336f
LP		 1116 s->deserialized_state == SERVICE_AUTO_RESTART) {
1117
1118 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1119 usec_t k;
1120
1121 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1122
1123 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1124 return r;
1125 }
1126 }
a16e1123
LP		 1127
1128 if ((s->deserialized_state == SERVICE_START &&
1129 (s->type == SERVICE_FORKING ||
8c47c732
LP		 1130 s->type == SERVICE_DBUS ||
1131 s->type == SERVICE_FINISH ||
1132 s->type == SERVICE_NOTIFY)) ||
a16e1123
LP		 1133 s->deserialized_state == SERVICE_START_POST ||
1134 s->deserialized_state == SERVICE_RUNNING ||
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 if (s->main_pid > 0)
1140 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1141 return r;
1142
1143 if (s->deserialized_state == SERVICE_START_PRE ||
1144 s->deserialized_state == SERVICE_START ||
1145 s->deserialized_state == SERVICE_START_POST ||
1146 s->deserialized_state == SERVICE_RELOAD ||
1147 s->deserialized_state == SERVICE_STOP ||
1148 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1149 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1150 s->deserialized_state == SERVICE_STOP_POST ||
1151 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1152 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1153 if (s->control_pid > 0)
1154 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1155 return r;
1156
1157 service_set_state(s, s->deserialized_state);
1158 }
1159
1160 return 0;
1161}
1162
44d8db9e
LP		 1163static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1164 Iterator i;
1165 int r;
1166 int *rfds = NULL;
1167 unsigned rn_fds = 0;
3e33402a 1168 Set *set;
47be870b 1169 Socket *sock;
44d8db9e
LP		 1170
1171 assert(s);
1172 assert(fds);
1173 assert(n_fds);
1174
3e33402a
LP		 1175 if ((r = service_get_sockets(s, &set)) < 0)
1176 return r;
1177
47be870b 1178 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 1179 int *cfds;
1180 unsigned cn_fds;
1181
47be870b 1182 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1183 goto fail;
1184
1185 if (!cfds)
1186 continue;
1187
1188 if (!rfds) {
1189 rfds = cfds;
1190 rn_fds = cn_fds;
1191 } else {
1192 int *t;
1193
1194 if (!(t = new(int, rn_fds+cn_fds))) {
1195 free(cfds);
1196 r = -ENOMEM;
1197 goto fail;
1198 }
1199
1200 memcpy(t, rfds, rn_fds);
1201 memcpy(t+rn_fds, cfds, cn_fds);
1202 free(rfds);
1203 free(cfds);
1204
1205 rfds = t;
1206 rn_fds = rn_fds+cn_fds;
1207 }
1208 }
1209
1210 *fds = rfds;
1211 *n_fds = rn_fds;
3e33402a
LP		 1212
1213 set_free(set);
1214
44d8db9e
LP		 1215 return 0;
1216
1217fail:
3e33402a 1218 set_free(set);
44d8db9e 1219 free(rfds);
3e33402a 1220
44d8db9e
LP		 1221 return r;
1222}
1223
81a2b7ce
LP		 1224static int service_spawn(
1225 Service *s,
1226 ExecCommand *c,
1227 bool timeout,
1228 bool pass_fds,
1229 bool apply_permissions,
1230 bool apply_chroot,
1231 pid_t *_pid) {
1232
034c6ed7
LP		 1233 pid_t pid;
1234 int r;
44d8db9e
LP		 1235 int *fds = NULL;
1236 unsigned n_fds = 0;
9e2f7c11 1237 char **argv;
034c6ed7
LP		 1238
1239 assert(s);
1240 assert(c);
1241 assert(_pid);
1242
4f2d528d
LP		 1243 if (pass_fds) {
1244 if (s->socket_fd >= 0) {
1245 fds = &s->socket_fd;
1246 n_fds = 1;
1247 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
44d8db9e 1248 goto fail;
4f2d528d 1249 }
44d8db9e 1250
e558336f 1251 if (timeout && s->timeout_usec) {
acbb0225 1252 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1253 goto fail;
1254 } else
acbb0225 1255 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1256
9e2f7c11
LP		 1257 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1258 r = -ENOMEM;
1259 goto fail;
1260 }
1261
1262 r = exec_spawn(c,
1263 argv,
1264 &s->exec_context,
1265 fds, n_fds,
1137a57c 1266 s->meta.manager->environment,
9e2f7c11
LP		 1267 apply_permissions,
1268 apply_chroot,
1269 UNIT(s)->meta.manager->confirm_spawn,
1270 UNIT(s)->meta.cgroup_bondings,
1271 &pid);
1272
1273 strv_free(argv);
1274 if (r < 0)
034c6ed7
LP		 1275 goto fail;
1276
4f2d528d
LP		 1277 if (fds) {
1278 if (s->socket_fd >= 0)
1279 service_close_socket_fd(s);
1280 else
1281 free(fds);
1282 }
1283
87f0e418 1284 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1285 /* FIXME: we need to do something here */
1286 goto fail;
1287
1288 *_pid = pid;
1289
5cb5a6ff 1290 return 0;
034c6ed7
LP		 1291
1292fail:
44d8db9e
LP		 1293 free(fds);
1294
034c6ed7 1295 if (timeout)
acbb0225 1296 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1297
1298 return r;
1299}
1300
80876c20
LP		 1301static int main_pid_good(Service *s) {
1302 assert(s);
1303
1304 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1305 * don't know */
1306
1307 /* If we know the pid file, then lets just check if it is
1308 * still valid */
1309 if (s->main_pid_known)
1310 return s->main_pid > 0;
1311
1312 /* We don't know the pid */
1313 return -EAGAIN;
1314}
1315
1316static int control_pid_good(Service *s) {
1317 assert(s);
1318
1319 return s->control_pid > 0;
1320}
1321
1322static int cgroup_good(Service *s) {
1323 int r;
1324
1325 assert(s);
1326
1327 if (s->valid_no_process)
1328 return -EAGAIN;
1329
1330 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1331 return r;
1332
1333 return !r;
1334}
1335
034c6ed7
LP		 1336static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1337 int r;
1338 assert(s);
1339
1340 if (!success)
1341 s->failure = true;
1342
1343 if (allow_restart &&
3a762661 1344 s->allow_restart &&
034c6ed7
LP		 1345 (s->restart == SERVICE_RESTART_ALWAYS ||
1346 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1347
acbb0225 1348 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1349 goto fail;
1350
1351 service_set_state(s, SERVICE_AUTO_RESTART);
1352 } else
18c78fb1 1353 service_set_state(s, s->failure ? SERVICE_MAINTENANCE : SERVICE_DEAD);
034c6ed7
LP		 1354
1355 return;
1356
1357fail:
9e2f7c11 1358 log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1359 service_enter_dead(s, false, false);
1360}
1361
1362static void service_enter_signal(Service *s, ServiceState state, bool success);
1363
1364static void service_enter_stop_post(Service *s, bool success) {
1365 int r;
1366 assert(s);
1367
1368 if (!success)
1369 s->failure = true;
1370
5e94833f
LP		 1371 service_unwatch_control_pid(s);
1372
a16e1123 1373 s->control_command_id = SERVICE_EXEC_STOP_POST;
80876c20 1374 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
81a2b7ce
LP		 1375 if ((r = service_spawn(s,
1376 s->control_command,
1377 true,
1378 false,
1379 !s->permissions_start_only,
1380 !s->root_directory_start_only,
1381 &s->control_pid)) < 0)
034c6ed7
LP		 1382 goto fail;
1383
d6ea93e3 1384
80876c20
LP		 1385 service_set_state(s, SERVICE_STOP_POST);
1386 } else
1387 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
034c6ed7
LP		 1388
1389 return;
1390
1391fail:
7020e8be 1392 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1393 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1394}
1395
1396static void service_enter_signal(Service *s, ServiceState state, bool success) {
1397 int r;
1398 bool sent = false;
1399
1400 assert(s);
1401
1402 if (!success)
1403 s->failure = true;
1404
80876c20
LP		 1405 if (s->kill_mode != KILL_NONE) {
1406 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
034c6ed7 1407
50159e6a 1408 if (s->kill_mode == KILL_CONTROL_GROUP) {
034c6ed7 1409
50159e6a
LP		 1410 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1411 if (r != -EAGAIN && r != -ESRCH)
1412 goto fail;
1413 } else
034c6ed7
LP		 1414 sent = true;
1415 }
1416
50159e6a
LP		 1417 if (!sent) {
1418 r = 0;
80876c20 1419
50159e6a
LP		 1420 if (s->main_pid > 0) {
1421 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1422 r = -errno;
1423 else
1424 sent = true;
1425 }
1426
1427 if (s->control_pid > 0) {
1428 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1429 r = -errno;
1430 else
1431 sent = true;
1432 }
1433
1434 if (r < 0)
1435 goto fail;
1436 }
d6ea93e3 1437 }
034c6ed7 1438
e93bc5a6 1439 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
e558336f
LP		 1440 if (s->timeout_usec > 0)
1441 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1442 goto fail;
d6ea93e3 1443
80876c20
LP		 1444 service_set_state(s, state);
1445 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1446 service_enter_stop_post(s, true);
1447 else
034c6ed7
LP		 1448 service_enter_dead(s, true, true);
1449
1450 return;
1451
1452fail:
9e2f7c11 1453 log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7 1454
80876c20 1455 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
034c6ed7
LP		 1456 service_enter_stop_post(s, false);
1457 else
1458 service_enter_dead(s, false, true);
1459}
1460
1461static void service_enter_stop(Service *s, bool success) {
1462 int r;
1463 assert(s);
1464
1465 if (!success)
1466 s->failure = true;
1467
5e94833f
LP		 1468 service_unwatch_control_pid(s);
1469
a16e1123 1470 s->control_command_id = SERVICE_EXEC_STOP;
80876c20 1471 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
81a2b7ce
LP		 1472 if ((r = service_spawn(s,
1473 s->control_command,
1474 true,
1475 false,
1476 !s->permissions_start_only,
1477 !s->root_directory_start_only,
1478 &s->control_pid)) < 0)
034c6ed7
LP		 1479 goto fail;
1480
80876c20
LP		 1481 service_set_state(s, SERVICE_STOP);
1482 } else
034c6ed7
LP		 1483 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1484
1485 return;
1486
1487fail:
7020e8be 1488 log_warning("%s failed to run 'stop' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1489 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1490}
1491
80876c20
LP		 1492static void service_enter_running(Service *s, bool success) {
1493 assert(s);
1494
1495 if (!success)
1496 s->failure = true;
1497
05e343b7
LP		 1498 if (main_pid_good(s) != 0 &&
1499 cgroup_good(s) != 0 &&
1500 (s->bus_name_good || s->type != SERVICE_DBUS))
80876c20
LP		 1501 service_set_state(s, SERVICE_RUNNING);
1502 else if (s->valid_no_process)
1503 service_set_state(s, SERVICE_EXITED);
1504 else
1505 service_enter_stop(s, true);
1506}
1507
034c6ed7
LP		 1508static void service_enter_start_post(Service *s) {
1509 int r;
1510 assert(s);
1511
5e94833f
LP		 1512 service_unwatch_control_pid(s);
1513
a16e1123 1514 s->control_command_id = SERVICE_EXEC_START_POST;
80876c20 1515 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
81a2b7ce
LP		 1516 if ((r = service_spawn(s,
1517 s->control_command,
1518 true,
1519 false,
1520 !s->permissions_start_only,
1521 !s->root_directory_start_only,
1522 &s->control_pid)) < 0)
034c6ed7
LP		 1523 goto fail;
1524
d6ea93e3 1525
80876c20
LP		 1526 service_set_state(s, SERVICE_START_POST);
1527 } else
1528 service_enter_running(s, true);
034c6ed7
LP		 1529
1530 return;
1531
1532fail:
7020e8be 1533 log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1534 service_enter_stop(s, false);
1535}
1536
1537static void service_enter_start(Service *s) {
1538 pid_t pid;
1539 int r;
1540
1541 assert(s);
1542
1543 assert(s->exec_command[SERVICE_EXEC_START]);
1544 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1545
80876c20
LP		 1546 if (s->type == SERVICE_FORKING)
1547 service_unwatch_control_pid(s);
1548 else
1549 service_unwatch_main_pid(s);
1550
81a2b7ce
LP		 1551 if ((r = service_spawn(s,
1552 s->exec_command[SERVICE_EXEC_START],
8c47c732 1553 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
81a2b7ce
LP		 1554 true,
1555 true,
1556 true,
1557 &pid)) < 0)
034c6ed7
LP		 1558 goto fail;
1559
1560 if (s->type == SERVICE_SIMPLE) {
1561 /* For simple services we immediately start
1562 * the START_POST binaries. */
1563
1564 s->main_pid = pid;
1565 s->main_pid_known = true;
80876c20 1566
034c6ed7
LP		 1567 service_enter_start_post(s);
1568
1569 } else if (s->type == SERVICE_FORKING) {
1570
1571 /* For forking services we wait until the start
1572 * process exited. */
1573
1574 s->control_pid = pid;
80876c20 1575
a16e1123 1576 s->control_command_id = SERVICE_EXEC_START;
034c6ed7 1577 s->control_command = s->exec_command[SERVICE_EXEC_START];
80876c20
LP		 1578 service_set_state(s, SERVICE_START);
1579
05e343b7 1580 } else if (s->type == SERVICE_FINISH ||
8c47c732
LP		 1581 s->type == SERVICE_DBUS ||
1582 s->type == SERVICE_NOTIFY) {
7d55e835
LP		 1583
1584 /* For finishing services we wait until the start
1585 * process exited, too, but it is our main process. */
1586
05e343b7 1587 /* For D-Bus services we know the main pid right away,
8c47c732
LP		 1588 * but wait for the bus name to appear on the
1589 * bus. Notify services are similar. */
05e343b7 1590
7d55e835 1591 s->main_pid = pid;
5e94833f 1592 s->main_pid_known = true;
80876c20 1593
80876c20 1594 service_set_state(s, SERVICE_START);
034c6ed7
LP		 1595 } else
1596 assert_not_reached("Unknown service type");
1597
1598 return;
1599
1600fail:
7020e8be 1601 log_warning("%s failed to run 'start' task: %s", UNIT(s)->meta.id, strerror(-r));
80876c20 1602 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 1603}
1604
1605static void service_enter_start_pre(Service *s) {
1606 int r;
1607
1608 assert(s);
1609
5e94833f
LP		 1610 service_unwatch_control_pid(s);
1611
a16e1123 1612 s->control_command_id = SERVICE_EXEC_START_PRE;
80876c20 1613 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
81a2b7ce
LP		 1614 if ((r = service_spawn(s,
1615 s->control_command,
1616 true,
1617 false,
1618 !s->permissions_start_only,
1619 !s->root_directory_start_only,
1620 &s->control_pid)) < 0)
034c6ed7
LP		 1621 goto fail;
1622
80876c20
LP		 1623 service_set_state(s, SERVICE_START_PRE);
1624 } else
034c6ed7
LP		 1625 service_enter_start(s);
1626
1627 return;
1628
1629fail:
7020e8be 1630 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1631 service_enter_dead(s, false, true);
1632}
1633
1634static void service_enter_restart(Service *s) {
1635 int r;
1636 assert(s);
1637
9ea9a0c8
LP		 1638 service_enter_dead(s, true, false);
1639
87f0e418 1640 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1641 goto fail;
1642
9e2f7c11 1643 log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
034c6ed7
LP		 1644 return;
1645
1646fail:
1647
9e2f7c11 1648 log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1649 service_enter_dead(s, false, false);
1650}
1651
1652static void service_enter_reload(Service *s) {
1653 int r;
1654
1655 assert(s);
1656
5e94833f
LP		 1657 service_unwatch_control_pid(s);
1658
a16e1123 1659 s->control_command_id = SERVICE_EXEC_RELOAD;
80876c20 1660 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
81a2b7ce
LP		 1661 if ((r = service_spawn(s,
1662 s->control_command,
1663 true,
1664 false,
1665 !s->permissions_start_only,
1666 !s->root_directory_start_only,
1667 &s->control_pid)) < 0)
034c6ed7
LP		 1668 goto fail;
1669
80876c20
LP		 1670 service_set_state(s, SERVICE_RELOAD);
1671 } else
1672 service_enter_running(s, true);
034c6ed7
LP		 1673
1674 return;
1675
1676fail:
7020e8be 1677 log_warning("%s failed to run 'reload' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1678 service_enter_stop(s, false);
1679}
1680
1681static void service_run_next(Service *s, bool success) {
1682 int r;
1683
1684 assert(s);
1685 assert(s->control_command);
1686 assert(s->control_command->command_next);
1687
1688 if (!success)
1689 s->failure = true;
1690
1691 s->control_command = s->control_command->command_next;
1692
5e94833f
LP		 1693 service_unwatch_control_pid(s);
1694
81a2b7ce
LP		 1695 if ((r = service_spawn(s,
1696 s->control_command,
1697 true,
1698 false,
1699 !s->permissions_start_only,
1700 !s->root_directory_start_only,
1701 &s->control_pid)) < 0)
034c6ed7
LP		 1702 goto fail;
1703
1704 return;
1705
1706fail:
7020e8be 1707 log_warning("%s failed to run spawn next task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7 1708
80876c20
LP		 1709 if (s->state == SERVICE_START_PRE)
1710 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1711 else if (s->state == SERVICE_STOP)
1712 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
034c6ed7
LP		 1713 else if (s->state == SERVICE_STOP_POST)
1714 service_enter_dead(s, false, true);
1715 else
1716 service_enter_stop(s, false);
5cb5a6ff
LP		 1717}
1718
87f0e418
LP		 1719static int service_start(Unit *u) {
1720 Service *s = SERVICE(u);
5cb5a6ff
LP		 1721
1722 assert(s);
1723
034c6ed7
LP		 1724 /* We cannot fulfill this request right now, try again later
1725 * please! */
1726 if (s->state == SERVICE_STOP ||
1727 s->state == SERVICE_STOP_SIGTERM ||
1728 s->state == SERVICE_STOP_SIGKILL ||
1729 s->state == SERVICE_STOP_POST ||
1730 s->state == SERVICE_FINAL_SIGTERM ||
1731 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1732 return -EAGAIN;
1733
034c6ed7
LP		 1734 /* Already on it! */
1735 if (s->state == SERVICE_START_PRE ||
1736 s->state == SERVICE_START ||
1737 s->state == SERVICE_START_POST)
1738 return 0;
1739
18c78fb1 1740 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTENANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1741
1e2e8133
LP		 1742 /* Make sure we don't enter a busy loop of some kind. */
1743 if (!ratelimit_test(&s->ratelimit)) {
9e2f7c11 1744 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
d5159713 1745 return -ECANCELED;
1e2e8133
LP		 1746 }
1747
034c6ed7
LP		 1748 s->failure = false;
1749 s->main_pid_known = false;
3a762661 1750 s->allow_restart = true;
034c6ed7
LP		 1751
1752 service_enter_start_pre(s);
1753 return 0;
5cb5a6ff
LP		 1754}
1755
87f0e418
LP		 1756static int service_stop(Unit *u) {
1757 Service *s = SERVICE(u);
5cb5a6ff
LP		 1758
1759 assert(s);
1760
e537352b 1761 /* Cannot do this now */
034c6ed7
LP		 1762 if (s->state == SERVICE_START_PRE ||
1763 s->state == SERVICE_START ||
1764 s->state == SERVICE_START_POST ||
1765 s->state == SERVICE_RELOAD)
1766 return -EAGAIN;
1767
e537352b
LP		 1768 /* Already on it */
1769 if (s->state == SERVICE_STOP ||
1770 s->state == SERVICE_STOP_SIGTERM ||
1771 s->state == SERVICE_STOP_SIGKILL ||
1772 s->state == SERVICE_STOP_POST ||
1773 s->state == SERVICE_FINAL_SIGTERM ||
1774 s->state == SERVICE_FINAL_SIGKILL)
1775 return 0;
1776
034c6ed7
LP		 1777 if (s->state == SERVICE_AUTO_RESTART) {
1778 service_set_state(s, SERVICE_DEAD);
1779 return 0;
1780 }
1781
80876c20 1782 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
5cb5a6ff 1783
3a762661
LP		 1784 /* This is a user request, so don't do restarts on this
1785 * shutdown. */
1786 s->allow_restart = false;
1787
034c6ed7 1788 service_enter_stop(s, true);
5cb5a6ff
LP		 1789 return 0;
1790}
1791
87f0e418
LP		 1792static int service_reload(Unit *u) {
1793 Service *s = SERVICE(u);
034c6ed7
LP		 1794
1795 assert(s);
1796
80876c20 1797 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
034c6ed7
LP		 1798
1799 service_enter_reload(s);
5cb5a6ff
LP		 1800 return 0;
1801}
1802
87f0e418
LP		 1803static bool service_can_reload(Unit *u) {
1804 Service *s = SERVICE(u);
034c6ed7
LP		 1805
1806 assert(s);
1807
1808 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1809}
1810
a16e1123
LP		 1811static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1812 Service *s = SERVICE(u);
1813
1814 assert(u);
1815 assert(f);
1816 assert(fds);
1817
1818 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1819 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1820
1821 if (s->control_pid > 0)
1822 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) (s->control_pid));
1823
1824 if (s->main_pid > 0)
1825 unit_serialize_item_format(u, f, "main-pid", "%u", (unsigned) (s->main_pid));
1826
1827 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1828
1829 /* There's a minor uncleanliness here: if there are multiple
1830 * commands attached here, we will start from the first one
1831 * again */
1832 if (s->control_command_id >= 0)
825636e5 1833 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
a16e1123
LP		 1834
1835 if (s->socket_fd >= 0) {
1836 int copy;
1837
1838 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1839 return copy;
1840
1841 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1842 }
1843
1844 return 0;
1845}
1846
1847static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1848 Service *s = SERVICE(u);
1849 int r;
1850
1851 assert(u);
1852 assert(key);
1853 assert(value);
1854 assert(fds);
1855
1856 if (streq(key, "state")) {
1857 ServiceState state;
1858
1859 if ((state = service_state_from_string(value)) < 0)
1860 log_debug("Failed to parse state value %s", value);
1861 else
1862 s->deserialized_state = state;
1863 } else if (streq(key, "failure")) {
1864 int b;
1865
1866 if ((b = parse_boolean(value)) < 0)
1867 log_debug("Failed to parse failure value %s", value);
1868 else
1869 s->failure = b || s->failure;
1870 } else if (streq(key, "control-pid")) {
1871 unsigned pid;
1872
1873 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1874 log_debug("Failed to parse control-pid value %s", value);
1875 else
1876 s->control_pid = (pid_t) pid;
1877 } else if (streq(key, "main-pid")) {
1878 unsigned pid;
1879
1880 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
1881 log_debug("Failed to parse main-pid value %s", value);
1882 else
1883 s->main_pid = (pid_t) pid;
1884 } else if (streq(key, "main-pid-known")) {
1885 int b;
1886
1887 if ((b = parse_boolean(value)) < 0)
1888 log_debug("Failed to parse main-pid-known value %s", value);
1889 else
1890 s->main_pid_known = b;
1891 } else if (streq(key, "control-command")) {
1892 ServiceExecCommand id;
1893
1894 if ((id = service_exec_command_from_string(value)) < 0)
1895 log_debug("Failed to parse exec-command value %s", value);
1896 else {
1897 s->control_command_id = id;
1898 s->control_command = s->exec_command[id];
1899 }
1900 } else if (streq(key, "socket-fd")) {
1901 int fd;
1902
1903 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1904 log_debug("Failed to parse socket-fd value %s", value);
1905 else {
1906
1907 if (s->socket_fd >= 0)
1908 close_nointr_nofail(s->socket_fd);
1909 s->socket_fd = fdset_remove(fds, fd);
1910 }
1911 } else
1912 log_debug("Unknown serialization key '%s'", key);
1913
1914 return 0;
1915}
1916
87f0e418
LP		 1917static UnitActiveState service_active_state(Unit *u) {
1918 assert(u);
5cb5a6ff 1919
acbb0225 1920 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1921}
1922
10a94420
LP		 1923static const char *service_sub_state_to_string(Unit *u) {
1924 assert(u);
1925
1926 return service_state_to_string(SERVICE(u)->state);
1927}
1928
701cc384
LP		 1929static bool service_check_gc(Unit *u) {
1930 Service *s = SERVICE(u);
1931
1932 assert(s);
1933
1934 return !!s->sysv_path;
1935}
1936
1937static bool service_check_snapshot(Unit *u) {
1938 Service *s = SERVICE(u);
1939
1940 assert(s);
1941
1942 return !s->got_socket_fd;
1943}
1944
87f0e418
LP		 1945static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1946 Service *s = SERVICE(u);
034c6ed7 1947 bool success;
5cb5a6ff
LP		 1948
1949 assert(s);
034c6ed7
LP		 1950 assert(pid >= 0);
1951
cb8a8f78 1952 success = is_clean_exit(code, status);
034c6ed7
LP		 1953 s->failure = s->failure || !success;
1954
1955 if (s->main_pid == pid) {
1956
1957 exec_status_fill(&s->main_exec_status, pid, code, status);
1958 s->main_pid = 0;
1959
8c47c732 1960 if (s->type != SERVICE_FORKING) {
034c6ed7
LP		 1961 assert(s->exec_command[SERVICE_EXEC_START]);
1962 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1963 }
1964
9e2f7c11 1965 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 1966
1967 /* The service exited, so the service is officially
1968 * gone. */
1969
1970 switch (s->state) {
1971
1972 case SERVICE_START_POST:
1973 case SERVICE_RELOAD:
1974 case SERVICE_STOP:
1975 /* Need to wait until the operation is
1976 * done */
1977 break;
1978
7d55e835 1979 case SERVICE_START:
c4653a4d
LP		 1980 if (s->type == SERVICE_FINISH) {
1981 /* This was our main goal, so let's go on */
1982 if (success)
1983 service_enter_start_post(s);
1984 else
1985 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1986 break;
1987 } else {
8c47c732 1988 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
7d55e835 1989
c4653a4d
LP		 1990 /* Fall through */
1991 }
7d55e835 1992
034c6ed7 1993 case SERVICE_RUNNING:
80876c20 1994 service_enter_running(s, success);
034c6ed7
LP		 1995 break;
1996
1997 case SERVICE_STOP_SIGTERM:
1998 case SERVICE_STOP_SIGKILL:
1999
2000 if (!control_pid_good(s))
2001 service_enter_stop_post(s, success);
5cb5a6ff 2002
034c6ed7
LP		 2003 /* If there is still a control process, wait for that first */
2004 break;
5cb5a6ff 2005
034c6ed7
LP		 2006 default:
2007 assert_not_reached("Uh, main process died at wrong time.");
2008 }
5cb5a6ff 2009
034c6ed7 2010 } else if (s->control_pid == pid) {
034c6ed7 2011
a16e1123
LP		 2012 if (s->control_command)
2013 exec_status_fill(&s->control_command->exec_status, pid, code, status);
2014
034c6ed7
LP		 2015 s->control_pid = 0;
2016
9e2f7c11 2017 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 2018
2019 /* If we are shutting things down anyway we
2020 * don't care about failing commands. */
2021
a16e1123 2022 if (s->control_command && s->control_command->command_next && success) {
034c6ed7
LP		 2023
2024 /* There is another command to *
2025 * execute, so let's do that. */
2026
9e2f7c11 2027 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
034c6ed7
LP		 2028 service_run_next(s, success);
2029
80876c20 2030 } else {
034c6ed7
LP		 2031 /* No further commands for this step, so let's
2032 * figure out what to do next */
2033
a16e1123
LP		 2034 s->control_command = NULL;
2035 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2036
9e2f7c11 2037 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
bd982a8b 2038
034c6ed7
LP		 2039 switch (s->state) {
2040
2041 case SERVICE_START_PRE:
2042 if (success)
2043 service_enter_start(s);
2044 else
80876c20 2045 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2046 break;
2047
2048 case SERVICE_START:
2049 assert(s->type == SERVICE_FORKING);
2050
2051 /* Let's try to load the pid
2052 * file here if we can. We
2053 * ignore the return value,
2054 * since the PID file might
2055 * actually be created by a
2056 * START_POST script */
2057
2058 if (success) {
2059 if (s->pid_file)
2060 service_load_pid_file(s);
2061
2062 service_enter_start_post(s);
2063 } else
80876c20 2064 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2065
2066 break;
2067
2068 case SERVICE_START_POST:
2069 if (success && s->pid_file && !s->main_pid_known) {
2070 int r;
2071
2072 /* Hmm, let's see if we can
2073 * load the pid now after the
2074 * start-post scripts got
2075 * executed. */
2076
2077 if ((r = service_load_pid_file(s)) < 0)
9e2f7c11 2078 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
034c6ed7
LP		 2079 }
2080
2081 /* Fall through */
2082
2083 case SERVICE_RELOAD:
80876c20
LP		 2084 if (success)
2085 service_enter_running(s, true);
2086 else
034c6ed7
LP		 2087 service_enter_stop(s, false);
2088
2089 break;
2090
2091 case SERVICE_STOP:
80876c20 2092 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
034c6ed7
LP		 2093 break;
2094
2095 case SERVICE_STOP_SIGTERM:
2096 case SERVICE_STOP_SIGKILL:
2097 if (main_pid_good(s) <= 0)
2098 service_enter_stop_post(s, success);
2099
2100 /* If there is still a service
2101 * process around, wait until
2102 * that one quit, too */
2103 break;
2104
2105 case SERVICE_STOP_POST:
2106 case SERVICE_FINAL_SIGTERM:
2107 case SERVICE_FINAL_SIGKILL:
2108 service_enter_dead(s, success, true);
2109 break;
2110
2111 default:
2112 assert_not_reached("Uh, control process died at wrong time.");
2113 }
2114 }
8c47c732 2115 }
034c6ed7
LP		 2116}
2117
acbb0225 2118static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 2119 Service *s = SERVICE(u);
034c6ed7
LP		 2120
2121 assert(s);
2122 assert(elapsed == 1);
2123
acbb0225 2124 assert(w == &s->timer_watch);
034c6ed7
LP		 2125
2126 switch (s->state) {
2127
2128 case SERVICE_START_PRE:
2129 case SERVICE_START:
9e2f7c11 2130 log_warning("%s operation timed out. Terminating.", u->meta.id);
80876c20
LP		 2131 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2132 break;
2133
034c6ed7
LP		 2134 case SERVICE_START_POST:
2135 case SERVICE_RELOAD:
9e2f7c11 2136 log_warning("%s operation timed out. Stopping.", u->meta.id);
034c6ed7
LP		 2137 service_enter_stop(s, false);
2138 break;
2139
2140 case SERVICE_STOP:
9e2f7c11 2141 log_warning("%s stopping timed out. Terminating.", u->meta.id);
034c6ed7
LP		 2142 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2143 break;
2144
2145 case SERVICE_STOP_SIGTERM:
9e2f7c11 2146 log_warning("%s stopping timed out. Killing.", u->meta.id);
034c6ed7
LP		 2147 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2148 break;
2149
2150 case SERVICE_STOP_SIGKILL:
2151 /* Uh, wie sent a SIGKILL and it is still not gone?
2152 * Must be something we cannot kill, so let's just be
2153 * weirded out and continue */
2154
9e2f7c11 2155 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
034c6ed7
LP		 2156 service_enter_stop_post(s, false);
2157 break;
2158
2159 case SERVICE_STOP_POST:
9e2f7c11 2160 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
034c6ed7
LP		 2161 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2162 break;
2163
2164 case SERVICE_FINAL_SIGTERM:
9e2f7c11 2165 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
034c6ed7
LP		 2166 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2167 break;
2168
2169 case SERVICE_FINAL_SIGKILL:
18c78fb1 2170 log_warning("%s still around after SIGKILL (2). Entering maintenance mode.", u->meta.id);
034c6ed7
LP		 2171 service_enter_dead(s, false, true);
2172 break;
2173
2174 case SERVICE_AUTO_RESTART:
9e2f7c11 2175 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
034c6ed7
LP		 2176 service_enter_restart(s);
2177 break;
2178
2179 default:
2180 assert_not_reached("Timeout at wrong time.");
2181 }
5cb5a6ff
LP		 2182}
2183
8e274523
LP		 2184static void service_cgroup_notify_event(Unit *u) {
2185 Service *s = SERVICE(u);
2186
2187 assert(u);
2188
9e2f7c11 2189 log_debug("%s: cgroup is empty", u->meta.id);
8e274523
LP		 2190
2191 switch (s->state) {
2192
2193 /* Waiting for SIGCHLD is usually more interesting,
2194 * because it includes return codes/signals. Which is
2195 * why we ignore the cgroup events for most cases,
2196 * except when we don't know pid which to expect the
2197 * SIGCHLD for. */
2198
2199 case SERVICE_RUNNING:
80876c20 2200 service_enter_running(s, true);
8e274523
LP		 2201 break;
2202
2203 default:
2204 ;
2205 }
2206}
2207
8c47c732
LP		 2208static void service_notify_message(Unit *u, char **tags) {
2209 Service *s = SERVICE(u);
2210 const char *e;
2211
2212 assert(u);
2213
2214 log_debug("%s: Got message", u->meta.id);
2215
2216 /* Interpret MAINPID= */
2217 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2218 (s->state == SERVICE_START ||
2219 s->state == SERVICE_START_POST ||
2220 s->state == SERVICE_RUNNING ||
2221 s->state == SERVICE_RELOAD)) {
2222 unsigned long pid;
2223
2224 if (safe_atolu(e + 8, &pid) < 0 ||
2225 (unsigned long) (pid_t) pid != pid ||
2226 pid <= 1)
2227 log_warning("Failed to parse %s", e);
2228 else {
2229 log_debug("%s: got %s", u->meta.id, e);
2230 s->main_pid = (pid_t) pid;
2231 }
2232 }
2233
2234 /* Interpret READY= */
2235 if (s->type == SERVICE_NOTIFY &&
2236 s->state == SERVICE_START &&
2237 strv_find(tags, "READY=1")) {
2238 log_debug("%s: got READY=1", u->meta.id);
2239
2240 service_enter_start_post(s);
2241 }
2242
2243 /* Interpret STATUS= */
2244 if ((e = strv_find_prefix(tags, "STATUS="))) {
2245 char *t;
2246
2247 if (!(t = strdup(e+7))) {
2248 log_error("Failed to allocate string.");
2249 return;
2250 }
2251
2252 log_debug("%s: got %s", u->meta.id, e);
2253
2254 free(s->status_text);
2255 s->status_text = t;
2256 }
2257}
2258
2c4104f0 2259static int service_enumerate(Manager *m) {
2c4104f0
LP		 2260 char **p;
2261 unsigned i;
2262 DIR *d = NULL;
2263 char *path = NULL, *fpath = NULL, *name = NULL;
2264 int r;
2265
2266 assert(m);
2267
84e3543e 2268 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
09cd1ab1 2269 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2c4104f0
LP		 2270 struct dirent *de;
2271
2272 free(path);
2273 path = NULL;
09cd1ab1 2274 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2c4104f0
LP		 2275 r = -ENOMEM;
2276 goto finish;
2277 }
2278
2279 if (d)
2280 closedir(d);
2281
2282 if (!(d = opendir(path))) {
2283 if (errno != ENOENT)
2284 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2285
2286 continue;
2287 }
2288
2289 while ((de = readdir(d))) {
6542952f 2290 Unit *service;
db06e3b6 2291 int a, b;
2c4104f0
LP		 2292
2293 if (ignore_file(de->d_name))
2294 continue;
2295
2296 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2297 continue;
2298
2299 if (strlen(de->d_name) < 4)
2300 continue;
2301
db06e3b6
LP		 2302 a = undecchar(de->d_name[1]);
2303 b = undecchar(de->d_name[2]);
2304
2305 if (a < 0 || b < 0)
2306 continue;
2307
2c4104f0
LP		 2308 free(fpath);
2309 fpath = NULL;
09cd1ab1 2310 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2c4104f0
LP		 2311 r = -ENOMEM;
2312 goto finish;
2313 }
2314
2315 if (access(fpath, X_OK) < 0) {
2316
2317 if (errno != ENOENT)
2318 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2319
2320 continue;
2321 }
2322
2323 free(name);
b7ccee3c 2324 if (!(name = sysv_translate_name(de->d_name + 3))) {
2c4104f0
LP		 2325 r = -ENOMEM;
2326 goto finish;
2327 }
2328
fbe9f3a9
LP		 2329 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0) {
2330 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2331 continue;
2332 }
2c4104f0 2333
09cd1ab1 2334 if (de->d_name[0] == 'S' &&
fc5df99e 2335 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT))
fbe9f3a9
LP		 2336 SERVICE(service)->sysv_start_priority =
2337 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
db06e3b6
LP		 2338
2339 manager_dispatch_load_queue(m);
2340 service = unit_follow_merge(service);
2341
2c4104f0 2342 if (de->d_name[0] == 'S') {
6542952f
LP		 2343 Unit *runlevel_target;
2344
09cd1ab1 2345 if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
6542952f
LP		 2346 goto finish;
2347
2348 if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2c4104f0
LP		 2349 goto finish;
2350
a0fcc5f6 2351 if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2c4104f0 2352 goto finish;
23a177ef 2353
fc5df99e
LP		 2354 } else if (de->d_name[0] == 'K' &&
2355 (rcnd_table[i].type == RUNLEVEL_DOWN ||
2356 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
6542952f
LP		 2357 Unit *shutdown_target;
2358
23a177ef
LP		 2359 /* We honour K links only for
2360 * halt/reboot. For the normal
2361 * runlevels we assume the
2362 * stop jobs will be
2363 * implicitly added by the
6542952f
LP		 2364 * core logic. Also, we don't
2365 * really distuingish here
2366 * between the runlevels 0 and
2367 * 6 and just add them to the
fc5df99e
LP		 2368 * special shutdown target. On
2369 * SUSE the boot.d/ runlevel
2370 * is also used for shutdown,
2371 * so we add links for that
2372 * too to the shutdown
2373 * target.*/
6542952f
LP		 2374
2375 if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2376 goto finish;
23a177ef 2377
a0fcc5f6 2378 if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2c4104f0
LP		 2379 goto finish;
2380
a0fcc5f6 2381 if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2c4104f0
LP		 2382 goto finish;
2383 }
2384 }
2385 }
2386
2387 r = 0;
2388
2389finish:
2390 free(path);
2391 free(fpath);
2392 free(name);
fbe9f3a9
LP		 2393
2394 if (d)
2395 closedir(d);
2c4104f0
LP		 2396
2397 return r;
2398}
2399
05e343b7
LP		 2400static void service_bus_name_owner_change(
2401 Unit *u,
2402 const char *name,
2403 const char *old_owner,
2404 const char *new_owner) {
2405
2406 Service *s = SERVICE(u);
2407
2408 assert(s);
2409 assert(name);
2410
2411 assert(streq(s->bus_name, name));
2412 assert(old_owner || new_owner);
2413
2414 if (old_owner && new_owner)
2415 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2416 else if (old_owner)
2417 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2418 else
2419 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2420
2421 s->bus_name_good = !!new_owner;
2422
2423 if (s->type == SERVICE_DBUS) {
2424
2425 /* service_enter_running() will figure out what to
2426 * do */
2427 if (s->state == SERVICE_RUNNING)
2428 service_enter_running(s, true);
2429 else if (s->state == SERVICE_START && new_owner)
2430 service_enter_start_post(s);
2431
2432 } else if (new_owner &&
2433 s->main_pid <= 0 &&
2434 (s->state == SERVICE_START ||
2435 s->state == SERVICE_START_POST ||
2436 s->state == SERVICE_RUNNING ||
2437 s->state == SERVICE_RELOAD)) {
2438
2439 /* Try to acquire PID from bus service */
2440 log_debug("Trying to acquire PID from D-Bus name...");
2441
2442 bus_query_pid(u->meta.manager, name);
2443 }
2444}
2445
2446static void service_bus_query_pid_done(
2447 Unit *u,
2448 const char *name,
2449 pid_t pid) {
2450
2451 Service *s = SERVICE(u);
2452
2453 assert(s);
2454 assert(name);
2455
2456 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2457
2458 if (s->main_pid <= 0 &&
2459 (s->state == SERVICE_START ||
2460 s->state == SERVICE_START_POST ||
2461 s->state == SERVICE_RUNNING ||
2462 s->state == SERVICE_RELOAD))
2463 s->main_pid = pid;
2464}
2465
4f2d528d
LP		 2466int service_set_socket_fd(Service *s, int fd) {
2467 assert(s);
2468 assert(fd >= 0);
2469
2470 /* This is called by the socket code when instantiating a new
2471 * service for a stream socket and the socket needs to be
2472 * configured. */
2473
2474 if (UNIT(s)->meta.load_state != UNIT_LOADED)
2475 return -EINVAL;
2476
2477 if (s->socket_fd >= 0)
2478 return -EBUSY;
2479
2480 if (s->state != SERVICE_DEAD)
2481 return -EAGAIN;
2482
2483 s->socket_fd = fd;
701cc384 2484 s->got_socket_fd = true;
4f2d528d
LP		 2485 return 0;
2486}
2487
94f04347
LP		 2488static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2489 [SERVICE_DEAD] = "dead",
2490 [SERVICE_START_PRE] = "start-pre",
2491 [SERVICE_START] = "start",
2492 [SERVICE_START_POST] = "start-post",
2493 [SERVICE_RUNNING] = "running",
80876c20 2494 [SERVICE_EXITED] = "exited",
94f04347
LP		 2495 [SERVICE_RELOAD] = "reload",
2496 [SERVICE_STOP] = "stop",
2497 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2498 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2499 [SERVICE_STOP_POST] = "stop-post",
2500 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2501 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
18c78fb1 2502 [SERVICE_MAINTENANCE] = "maintenance",
94f04347
LP		 2503 [SERVICE_AUTO_RESTART] = "auto-restart",
2504};
2505
2506DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2507
2508static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2509 [SERVICE_ONCE] = "once",
2510 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
40531a55 2511 [SERVICE_RESTART_ALWAYS] = "restart-always",
94f04347
LP		 2512};
2513
2514DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2515
2516static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2517 [SERVICE_FORKING] = "forking",
2518 [SERVICE_SIMPLE] = "simple",
05e343b7 2519 [SERVICE_FINISH] = "finish",
8c47c732
LP		 2520 [SERVICE_DBUS] = "dbus",
2521 [SERVICE_NOTIFY] = "notify"
94f04347
LP		 2522};
2523
2524DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2525
e537352b 2526static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
94f04347
LP		 2527 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2528 [SERVICE_EXEC_START] = "ExecStart",
2529 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2530 [SERVICE_EXEC_RELOAD] = "ExecReload",
2531 [SERVICE_EXEC_STOP] = "ExecStop",
2532 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2533};
2534
2535DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2536
87f0e418 2537const UnitVTable service_vtable = {
5cb5a6ff
LP		 2538 .suffix = ".service",
2539
034c6ed7
LP		 2540 .init = service_init,
2541 .done = service_done,
a16e1123
LP		 2542 .load = service_load,
2543
2544 .coldplug = service_coldplug,
034c6ed7 2545
5cb5a6ff
LP		 2546 .dump = service_dump,
2547
2548 .start = service_start,
2549 .stop = service_stop,
2550 .reload = service_reload,
2551
034c6ed7
LP		 2552 .can_reload = service_can_reload,
2553
a16e1123
LP		 2554 .serialize = service_serialize,
2555 .deserialize_item = service_deserialize_item,
2556
5cb5a6ff 2557 .active_state = service_active_state,
10a94420 2558 .sub_state_to_string = service_sub_state_to_string,
5cb5a6ff 2559
701cc384
LP		 2560 .check_gc = service_check_gc,
2561 .check_snapshot = service_check_snapshot,
2562
034c6ed7
LP		 2563 .sigchld_event = service_sigchld_event,
2564 .timer_event = service_timer_event,
2c4104f0 2565
8e274523 2566 .cgroup_notify_empty = service_cgroup_notify_event,
8c47c732 2567 .notify_message = service_notify_message,
8e274523 2568
05e343b7
LP		 2569 .bus_name_owner_change = service_bus_name_owner_change,
2570 .bus_query_pid_done = service_bus_query_pid_done,
2571
4139c1b2
LP		 2572 .bus_message_handler = bus_service_message_handler,
2573
2c4104f0 2574 .enumerate = service_enumerate
5cb5a6ff 2575};
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