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unit: add [Install] section to various service files
[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"
514f4ef5 35#include "special.h"
2c4104f0
LP		 36
37#define COMMENTS "#;\n"
38#define NEWLINES "\n\r"
39#define LINE_MAX 4096
034c6ed7 40
09cd1ab1
LP		 41typedef enum RunlevelType {
42 RUNLEVEL_UP,
43 RUNLEVEL_DOWN,
fc5df99e 44 RUNLEVEL_SYSINIT
09cd1ab1
LP		 45} RunlevelType;
46
47static const struct {
48 const char *path;
49 const char *target;
50 const RunlevelType type;
51} rcnd_table[] = {
fbe9f3a9 52 /* Standard SysV runlevels */
514f4ef5
LP		 53 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
54 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
fbe9f3a9
LP		 55 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
56 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
57 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
58 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
514f4ef5 59 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN },
fbe9f3a9 60
cfe243e3 61 /* SUSE style boot.d */
fc5df99e 62 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
fbe9f3a9
LP		 63
64 /* Debian style rcS.d */
fc5df99e 65 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
23a177ef
LP		 66};
67
09cd1ab1 68#define RUNLEVELS_UP "12345"
fbe9f3a9
LP		 69/* #define RUNLEVELS_DOWN "06" */
70/* #define RUNLEVELS_BOOT "bBsS" */
09cd1ab1 71
acbb0225 72static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
87f0e418
LP		 73 [SERVICE_DEAD] = UNIT_INACTIVE,
74 [SERVICE_START_PRE] = UNIT_ACTIVATING,
75 [SERVICE_START] = UNIT_ACTIVATING,
76 [SERVICE_START_POST] = UNIT_ACTIVATING,
77 [SERVICE_RUNNING] = UNIT_ACTIVE,
80876c20 78 [SERVICE_EXITED] = UNIT_ACTIVE,
87f0e418
LP		 79 [SERVICE_RELOAD] = UNIT_ACTIVE_RELOADING,
80 [SERVICE_STOP] = UNIT_DEACTIVATING,
81 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
82 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
83 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
84 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
85 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
18c78fb1 86 [SERVICE_MAINTENANCE] = UNIT_INACTIVE,
87f0e418 87 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING,
034c6ed7 88};
5cb5a6ff 89
a16e1123
LP		 90static void service_init(Unit *u) {
91 Service *s = SERVICE(u);
92
93 assert(u);
94 assert(u->meta.load_state == UNIT_STUB);
95
96 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
97 s->restart_usec = DEFAULT_RESTART_USEC;
98 s->timer_watch.type = WATCH_INVALID;
99 s->sysv_start_priority = -1;
100 s->socket_fd = -1;
101
102 exec_context_init(&s->exec_context);
103
104 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
105
106 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
107}
108
5e94833f
LP		 109static void service_unwatch_control_pid(Service *s) {
110 assert(s);
111
112 if (s->control_pid <= 0)
113 return;
114
115 unit_unwatch_pid(UNIT(s), s->control_pid);
116 s->control_pid = 0;
117}
118
119static void service_unwatch_main_pid(Service *s) {
120 assert(s);
121
122 if (s->main_pid <= 0)
123 return;
124
125 unit_unwatch_pid(UNIT(s), s->main_pid);
126 s->main_pid = 0;
127}
128
5925dd3c
LP		 129static int service_set_main_pid(Service *s, pid_t pid) {
130 assert(s);
131
132 if (pid <= 1)
133 return -EINVAL;
134
135 if (pid == getpid())
136 return -EINVAL;
137
138 s->main_pid = pid;
139 s->main_pid_known = true;
140
141 return 0;
142}
143
144static int service_set_control_pid(Service *s, pid_t pid) {
145 assert(s);
146
147 if (pid <= 1)
148 return -EINVAL;
149
150 if (pid == getpid())
151 return -EINVAL;
152
153 s->control_pid = pid;
154
155 return 0;
156}
157
4f2d528d
LP		 158static void service_close_socket_fd(Service *s) {
159 assert(s);
160
161 if (s->socket_fd < 0)
162 return;
163
164 close_nointr_nofail(s->socket_fd);
165 s->socket_fd = -1;
166}
167
87f0e418
LP		 168static void service_done(Unit *u) {
169 Service *s = SERVICE(u);
44d8db9e
LP		 170
171 assert(s);
172
173 free(s->pid_file);
174 s->pid_file = NULL;
175
2c4104f0
LP		 176 free(s->sysv_path);
177 s->sysv_path = NULL;
178
8309400a
LP		 179 free(s->sysv_runlevels);
180 s->sysv_runlevels = NULL;
181
8c47c732
LP		 182 free(s->status_text);
183 s->status_text = NULL;
184
44d8db9e 185 exec_context_done(&s->exec_context);
e537352b 186 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
44d8db9e
LP		 187 s->control_command = NULL;
188
189 /* This will leak a process, but at least no memory or any of
190 * our resources */
5e94833f
LP		 191 service_unwatch_main_pid(s);
192 service_unwatch_control_pid(s);
44d8db9e 193
05e343b7
LP		 194 if (s->bus_name) {
195 unit_unwatch_bus_name(UNIT(u), s->bus_name);
196 free(s->bus_name);
197 s->bus_name = NULL;
198 }
199
4f2d528d
LP		 200 service_close_socket_fd(s);
201
acbb0225 202 unit_unwatch_timer(u, &s->timer_watch);
44d8db9e
LP		 203}
204
b7ccee3c
LP		 205static char *sysv_translate_name(const char *name) {
206 char *r;
207
208 if (!(r = new(char, strlen(name) + sizeof(".service"))))
209 return NULL;
210
211 if (startswith(name, "boot."))
212 /* Drop SuSE-style boot. prefix */
213 strcpy(stpcpy(r, name + 5), ".service");
214 else if (endswith(name, ".sh"))
215 /* Drop Debian-style .sh suffix */
216 strcpy(stpcpy(r, name) - 3, ".service");
217 else
218 /* Normal init scripts */
219 strcpy(stpcpy(r, name), ".service");
220
221 return r;
222}
223
224static int sysv_translate_facility(const char *name, char **_r) {
2c4104f0
LP		 225
226 static const char * const table[] = {
6464aa08 227 /* LSB defined facilities */
2c4104f0
LP		 228 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
229 "$network", SPECIAL_NETWORK_TARGET,
230 "$named", SPECIAL_NSS_LOOKUP_TARGET,
231 "$portmap", SPECIAL_RPCBIND_TARGET,
232 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
233 "$syslog", SPECIAL_SYSLOG_TARGET,
6464aa08
LP		 234 "$time", SPECIAL_RTC_SET_TARGET,
235
236 /* Debian extensions */
237 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
238 "$mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
1e287fe3 239 "$x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE
2c4104f0
LP		 240 };
241
242 unsigned i;
243 char *r;
244
245 for (i = 0; i < ELEMENTSOF(table); i += 2)
246 if (streq(table[i], name)) {
247 if (!(r = strdup(table[i+1])))
248 return -ENOMEM;
249
250 goto finish;
251 }
252
253 if (*name == '$')
254 return 0;
255
b7ccee3c 256 if (!(r = sysv_translate_name(name)))
2c4104f0
LP		 257 return -ENOMEM;
258
259finish:
260
261 if (_r)
262 *_r = r;
263
264 return 1;
265}
266
56d748b4 267static int sysv_fix_order(Service *s) {
2c4104f0
LP		 268 Meta *other;
269 int r;
270
271 assert(s);
272
273 if (s->sysv_start_priority < 0)
274 return 0;
275
23a177ef
LP		 276 /* For each pair of services where at least one lacks a LSB
277 * header, we use the start priority value to order things. */
2c4104f0
LP		 278
279 LIST_FOREACH(units_per_type, other, UNIT(s)->meta.manager->units_per_type[UNIT_SERVICE]) {
280 Service *t;
281 UnitDependency d;
282
283 t = (Service*) other;
284
285 if (s == t)
286 continue;
287
288 if (t->sysv_start_priority < 0)
289 continue;
290
51a1a79d
LP		 291 /* If both units have modern headers we don't care
292 * about the priorities */
293 if ((!s->sysv_path || s->sysv_has_lsb) &&
294 (!t->sysv_path || t->sysv_has_lsb))
23a177ef
LP		 295 continue;
296
2c4104f0
LP		 297 if (t->sysv_start_priority < s->sysv_start_priority)
298 d = UNIT_AFTER;
299 else if (t->sysv_start_priority > s->sysv_start_priority)
300 d = UNIT_BEFORE;
301 else
302 continue;
303
304 /* FIXME: Maybe we should compare the name here lexicographically? */
305
701cc384 306 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
2c4104f0
LP		 307 return r;
308 }
309
310 return 0;
311}
312
313static ExecCommand *exec_command_new(const char *path, const char *arg1) {
314 ExecCommand *c;
315
316 if (!(c = new0(ExecCommand, 1)))
317 return NULL;
318
319 if (!(c->path = strdup(path))) {
320 free(c);
321 return NULL;
322 }
323
324 if (!(c->argv = strv_new(path, arg1, NULL))) {
325 free(c->path);
326 free(c);
327 return NULL;
328 }
329
330 return c;
331}
332
333static int sysv_exec_commands(Service *s) {
334 ExecCommand *c;
335
336 assert(s);
337 assert(s->sysv_path);
338
339 if (!(c = exec_command_new(s->sysv_path, "start")))
340 return -ENOMEM;
341 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
342
343 if (!(c = exec_command_new(s->sysv_path, "stop")))
344 return -ENOMEM;
345 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
346
347 if (!(c = exec_command_new(s->sysv_path, "reload")))
348 return -ENOMEM;
349 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
350
351 return 0;
352}
353
e537352b 354static int service_load_sysv_path(Service *s, const char *path) {
2c4104f0
LP		 355 FILE *f;
356 Unit *u;
357 unsigned line = 0;
358 int r;
359 enum {
360 NORMAL,
361 DESCRIPTION,
362 LSB,
363 LSB_DESCRIPTION
364 } state = NORMAL;
23a177ef
LP		 365
366 assert(s);
367 assert(path);
2c4104f0
LP		 368
369 u = UNIT(s);
370
371 if (!(f = fopen(path, "re"))) {
372 r = errno == ENOENT ? 0 : -errno;
373 goto finish;
374 }
375
2c4104f0
LP		 376 free(s->sysv_path);
377 if (!(s->sysv_path = strdup(path))) {
378 r = -ENOMEM;
379 goto finish;
380 }
381
382 while (!feof(f)) {
383 char l[LINE_MAX], *t;
384
385 if (!fgets(l, sizeof(l), f)) {
386 if (feof(f))
387 break;
388
389 r = -errno;
390 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
391 goto finish;
392 }
393
394 line++;
395
396 t = strstrip(l);
397 if (*t != '#')
398 continue;
399
400 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
401 state = LSB;
23a177ef 402 s->sysv_has_lsb = true;
2c4104f0
LP		 403 continue;
404 }
405
406 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
407 state = NORMAL;
408 continue;
409 }
410
411 t++;
412 t += strspn(t, WHITESPACE);
413
414 if (state == NORMAL) {
415
416 /* Try to parse Red Hat style chkconfig headers */
417
c2b35af6 418 if (startswith_no_case(t, "chkconfig:")) {
2c4104f0 419 int start_priority;
8309400a 420 char runlevels[16], *k;
2c4104f0
LP		 421
422 state = NORMAL;
423
8309400a
LP		 424 if (sscanf(t+10, "%15s %i %*i",
425 runlevels,
426 &start_priority) != 2) {
2c4104f0
LP		 427
428 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
429 continue;
430 }
431
fbe9f3a9
LP		 432 /* A start priority gathered from the
433 * symlink farms is preferred over the
434 * data from the LSB header. */
8309400a 435 if (start_priority < 0 || start_priority > 99)
2c4104f0 436 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
db06e3b6 437 else if (s->sysv_start_priority < 0)
8309400a
LP		 438 s->sysv_start_priority = start_priority;
439
440 char_array_0(runlevels);
441 k = delete_chars(runlevels, WHITESPACE "-");
442
443 if (k[0]) {
444 char *d;
445
446 if (!(d = strdup(k))) {
447 r = -ENOMEM;
448 goto finish;
449 }
450
451 free(s->sysv_runlevels);
452 s->sysv_runlevels = d;
2c4104f0
LP		 453 }
454
c2b35af6 455 } else if (startswith_no_case(t, "description:")) {
2c4104f0
LP		 456
457 size_t k = strlen(t);
458 char *d;
459
460 if (t[k-1] == '\\') {
461 state = DESCRIPTION;
462 t[k-1] = 0;
463 }
464
465 if (!(d = strdup(strstrip(t+12)))) {
466 r = -ENOMEM;
467 goto finish;
468 }
469
470 free(u->meta.description);
471 u->meta.description = d;
472
c2b35af6 473 } else if (startswith_no_case(t, "pidfile:")) {
2c4104f0
LP		 474
475 char *fn;
476
477 state = NORMAL;
478
479 fn = strstrip(t+8);
480 if (!path_is_absolute(fn)) {
481 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
482 continue;
483 }
484
485 if (!(fn = strdup(fn))) {
486 r = -ENOMEM;
487 goto finish;
488 }
489
490 free(s->pid_file);
491 s->pid_file = fn;
492 }
493
494 } else if (state == DESCRIPTION) {
495
496 /* Try to parse Red Hat style description
497 * continuation */
498
499 size_t k = strlen(t);
500 char *d;
501
502 if (t[k-1] == '\\')
503 t[k-1] = 0;
504 else
505 state = NORMAL;
506
507 assert(u->meta.description);
508 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
509 r = -ENOMEM;
510 goto finish;
511 }
512
513 free(u->meta.description);
514 u->meta.description = d;
515
516 } else if (state == LSB || state == LSB_DESCRIPTION) {
517
c2b35af6 518 if (startswith_no_case(t, "Provides:")) {
2c4104f0
LP		 519 char *i, *w;
520 size_t z;
521
522 state = LSB;
523
524 FOREACH_WORD(w, z, t+9, i) {
525 char *n, *m;
526
527 if (!(n = strndup(w, z))) {
528 r = -ENOMEM;
529 goto finish;
530 }
531
b7ccee3c 532 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 533 free(n);
534
535 if (r < 0)
536 goto finish;
537
538 if (r == 0)
539 continue;
540
bd77d0fc
LP		 541 if (unit_name_to_type(m) == UNIT_SERVICE)
542 r = unit_add_name(u, m);
543 else {
701cc384
LP		 544 if ((r = unit_add_dependency_by_name_inverse(u, UNIT_REQUIRES, m, NULL, true)) >= 0)
545 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
bd77d0fc
LP		 546 }
547
2c4104f0
LP		 548 free(m);
549
550 if (r < 0)
551 goto finish;
552 }
553
c2b35af6
LP		 554 } else if (startswith_no_case(t, "Required-Start:") ||
555 startswith_no_case(t, "Should-Start:") ||
556 startswith_no_case(t, "X-Start-Before:") ||
557 startswith_no_case(t, "X-Start-After:")) {
2c4104f0
LP		 558 char *i, *w;
559 size_t z;
560
561 state = LSB;
562
563 FOREACH_WORD(w, z, strchr(t, ':')+1, i) {
564 char *n, *m;
565
566 if (!(n = strndup(w, z))) {
567 r = -ENOMEM;
568 goto finish;
569 }
570
b7ccee3c 571 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 572 free(n);
573
574 if (r < 0)
575 goto finish;
576
577 if (r == 0)
578 continue;
579
c2b35af6 580 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
2c4104f0
LP		 581 free(m);
582
583 if (r < 0)
584 goto finish;
585 }
c2b35af6 586 } else if (startswith_no_case(t, "Default-Start:")) {
8309400a
LP		 587 char *k, *d;
588
589 state = LSB;
590
591 k = delete_chars(t+14, WHITESPACE "-");
592
593 if (k[0] != 0) {
594 if (!(d = strdup(k))) {
595 r = -ENOMEM;
596 goto finish;
597 }
598
599 free(s->sysv_runlevels);
600 s->sysv_runlevels = d;
601 }
2c4104f0 602
c2b35af6 603 } else if (startswith_no_case(t, "Description:")) {
2c4104f0
LP		 604 char *d;
605
606 state = LSB_DESCRIPTION;
607
608 if (!(d = strdup(strstrip(t+12)))) {
609 r = -ENOMEM;
610 goto finish;
611 }
612
613 free(u->meta.description);
614 u->meta.description = d;
615
c2b35af6 616 } else if (startswith_no_case(t, "Short-Description:") &&
8309400a 617 !u->meta.description) {
2c4104f0
LP		 618 char *d;
619
620 /* We use the short description only
621 * if no long description is set. */
622
623 state = LSB;
624
625 if (!(d = strdup(strstrip(t+18)))) {
626 r = -ENOMEM;
627 goto finish;
628 }
629
2c4104f0
LP		 630 u->meta.description = d;
631
723c83fd
LP		 632 } else if (startswith_no_case(t, "X-Interactive:")) {
633 int b;
634
635 if ((b = parse_boolean(strstrip(t+14))) < 0) {
636 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
637 continue;
638 }
639
640 if (b)
641 s->exec_context.std_input = EXEC_INPUT_TTY;
642 else
643 s->exec_context.std_input = EXEC_INPUT_NULL;
644
2c4104f0
LP		 645 } else if (state == LSB_DESCRIPTION) {
646
647 if (startswith(l, "#\t") || startswith(l, "# ")) {
648 char *d;
649
650 assert(u->meta.description);
651 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
652 r = -ENOMEM;
653 goto finish;
654 }
655
656 free(u->meta.description);
657 u->meta.description = d;
658 } else
659 state = LSB;
660 }
661 }
662 }
663
2c4104f0
LP		 664 if ((r = sysv_exec_commands(s)) < 0)
665 goto finish;
666
09cd1ab1 667 if (!s->sysv_runlevels || chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
0bc824be
LP		 668 /* If there a runlevels configured for this service
669 * but none of the standard ones, then we assume this
670 * is some special kind of service (which might be
671 * needed for early boot) and don't create any links
672 * to it. */
673
701cc384
LP		 674 if ((r = unit_add_dependency_by_name(u, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0 ||
675 (r = unit_add_dependency_by_name(u, UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
0bc824be 676 goto finish;
09cd1ab1
LP		 677
678 } else
679 /* Don't timeout special services during boot (like fsck) */
680 s->timeout_usec = 0;
0fd030be 681
80876c20 682 /* Special setting for all SysV services */
1f48cf56 683 s->type = SERVICE_FORKING;
80876c20 684 s->valid_no_process = true;
b29a8e58 685 s->kill_mode = KILL_PROCESS_GROUP;
1f48cf56 686 s->restart = SERVICE_ONCE;
80876c20 687
e537352b 688 u->meta.load_state = UNIT_LOADED;
23a177ef 689 r = 0;
2c4104f0
LP		 690
691finish:
692
693 if (f)
694 fclose(f);
695
696 return r;
697}
698
e537352b 699static int service_load_sysv_name(Service *s, const char *name) {
2c4104f0
LP		 700 char **p;
701
702 assert(s);
703 assert(name);
704
d017c6ca
LP		 705 /* For SysV services we strip the boot. or .sh
706 * prefixes/suffixes. */
707 if (startswith(name, "boot.") ||
708 endswith(name, ".sh.service"))
709 return -ENOENT;
710
84e3543e 711 STRV_FOREACH(p, UNIT(s)->meta.manager->lookup_paths.sysvinit_path) {
2c4104f0
LP		 712 char *path;
713 int r;
714
715 if (asprintf(&path, "%s/%s", *p, name) < 0)
716 return -ENOMEM;
717
718 assert(endswith(path, ".service"));
719 path[strlen(path)-8] = 0;
720
e537352b 721 r = service_load_sysv_path(s, path);
fbe9f3a9
LP		 722
723 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
d017c6ca 724 /* Try Debian style xxx.sh source'able init scripts */
fbe9f3a9
LP		 725 strcat(path, ".sh");
726 r = service_load_sysv_path(s, path);
727 }
728
2c4104f0
LP		 729 free(path);
730
fbe9f3a9 731 if (r >= 0 && UNIT(s)->meta.load_state == UNIT_STUB) {
cfe243e3 732 /* Try SUSE style boot.xxx init scripts */
fbe9f3a9
LP		 733
734 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
735 return -ENOMEM;
736
737 path[strlen(path)-8] = 0;
738 r = service_load_sysv_path(s, path);
739 free(path);
740 }
741
23a177ef 742 if (r < 0)
2c4104f0 743 return r;
23a177ef 744
e537352b 745 if ((UNIT(s)->meta.load_state != UNIT_STUB))
23a177ef 746 break;
2c4104f0
LP		 747 }
748
749 return 0;
750}
751
e537352b 752static int service_load_sysv(Service *s) {
2c4104f0
LP		 753 const char *t;
754 Iterator i;
755 int r;
756
5cb5a6ff
LP		 757 assert(s);
758
759 /* Load service data from SysV init scripts, preferably with
760 * LSB headers ... */
761
84e3543e 762 if (strv_isempty(UNIT(s)->meta.manager->lookup_paths.sysvinit_path))
2c4104f0
LP		 763 return 0;
764
9e2f7c11 765 if ((t = UNIT(s)->meta.id))
e537352b 766 if ((r = service_load_sysv_name(s, t)) < 0)
2c4104f0
LP		 767 return r;
768
e537352b 769 if (UNIT(s)->meta.load_state == UNIT_STUB)
23a177ef 770 SET_FOREACH(t, UNIT(s)->meta.names, i) {
9e2f7c11 771 if (t == UNIT(s)->meta.id)
e537352b
LP		 772 continue;
773
774 if ((r == service_load_sysv_name(s, t)) < 0)
23a177ef
LP		 775 return r;
776
e537352b 777 if (UNIT(s)->meta.load_state != UNIT_STUB)
23a177ef
LP		 778 break;
779 }
2c4104f0
LP		 780
781 return 0;
5cb5a6ff
LP		 782}
783
05e343b7
LP		 784static int service_add_bus_name(Service *s) {
785 char *n;
786 int r;
787
788 assert(s);
789 assert(s->bus_name);
790
791 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
792 return 0;
793
794 r = unit_merge_by_name(UNIT(s), n);
795 free(n);
796
797 return r;
798}
799
243b1432
LP		 800static int service_verify(Service *s) {
801 assert(s);
802
803 if (UNIT(s)->meta.load_state != UNIT_LOADED)
804 return 0;
805
806 if (!s->exec_command[SERVICE_EXEC_START]) {
9e2f7c11 807 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->meta.id);
243b1432
LP		 808 return -EINVAL;
809 }
810
05e343b7
LP		 811 if (s->type == SERVICE_DBUS && !s->bus_name) {
812 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->meta.id);
813 return -EINVAL;
814 }
815
243b1432
LP		 816 return 0;
817}
818
e537352b
LP		 819static int service_load(Unit *u) {
820 int r;
821 Service *s = SERVICE(u);
822
823 assert(s);
1e2e8133 824
5cb5a6ff 825 /* Load a .service file */
e537352b 826 if ((r = unit_load_fragment(u)) < 0)
5cb5a6ff
LP		 827 return r;
828
bd77d0fc 829 /* Load a classic init script as a fallback, if we couldn't find anything */
e537352b
LP		 830 if (u->meta.load_state == UNIT_STUB)
831 if ((r = service_load_sysv(s)) < 0)
23a177ef 832 return r;
d46de8a1 833
23a177ef 834 /* Still nothing found? Then let's give up */
e537352b 835 if (u->meta.load_state == UNIT_STUB)
23a177ef 836 return -ENOENT;
034c6ed7 837
23a177ef
LP		 838 /* We were able to load something, then let's add in the
839 * dropin directories. */
840 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 841 return r;
23a177ef
LP		 842
843 /* This is a new unit? Then let's add in some extras */
e537352b 844 if (u->meta.load_state == UNIT_LOADED) {
23a177ef
LP		 845 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
846 return r;
847
848 if ((r = unit_add_default_cgroup(u)) < 0)
849 return r;
850
56d748b4 851 if ((r = sysv_fix_order(s)) < 0)
23a177ef 852 return r;
05e343b7
LP		 853
854 if (s->bus_name) {
855 if ((r = service_add_bus_name(s)) < 0)
856 return r;
857
858 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
859 return r;
860 }
8e274523
LP		 861 }
862
243b1432 863 return service_verify(s);
034c6ed7
LP		 864}
865
87f0e418 866static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 867
5cb5a6ff 868 ServiceExecCommand c;
87f0e418 869 Service *s = SERVICE(u);
47be870b
LP		 870 const char *prefix2;
871 char *p2;
5cb5a6ff
LP		 872
873 assert(s);
874
47be870b
LP		 875 p2 = strappend(prefix, "\t");
876 prefix2 = p2 ? p2 : prefix;
44d8db9e 877
5cb5a6ff 878 fprintf(f,
81a2b7ce
LP		 879 "%sService State: %s\n"
880 "%sPermissionsStartOnly: %s\n"
8e274523 881 "%sRootDirectoryStartOnly: %s\n"
03d6ab85 882 "%sValidNoProcess: %s\n"
50159e6a 883 "%sKillMode: %s\n"
03d6ab85 884 "%sType: %s\n",
81a2b7ce
LP		 885 prefix, service_state_to_string(s->state),
886 prefix, yes_no(s->permissions_start_only),
8e274523 887 prefix, yes_no(s->root_directory_start_only),
03d6ab85 888 prefix, yes_no(s->valid_no_process),
50159e6a 889 prefix, kill_mode_to_string(s->kill_mode),
03d6ab85 890 prefix, service_type_to_string(s->type));
5cb5a6ff 891
70123e68
LP		 892 if (s->control_pid > 0)
893 fprintf(f,
894 "%sControl PID: %llu\n",
895 prefix, (unsigned long long) s->control_pid);
896
897 if (s->main_pid > 0)
898 fprintf(f,
899 "%sMain PID: %llu\n",
900 prefix, (unsigned long long) s->main_pid);
901
034c6ed7
LP		 902 if (s->pid_file)
903 fprintf(f,
904 "%sPIDFile: %s\n",
905 prefix, s->pid_file);
906
05e343b7
LP		 907 if (s->bus_name)
908 fprintf(f,
909 "%sBusName: %s\n"
910 "%sBus Name Good: %s\n",
911 prefix, s->bus_name,
912 prefix, yes_no(s->bus_name_good));
913
5cb5a6ff
LP		 914 exec_context_dump(&s->exec_context, f, prefix);
915
e537352b 916 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
5cb5a6ff 917
44d8db9e
LP		 918 if (!s->exec_command[c])
919 continue;
920
40d50879 921 fprintf(f, "%s-> %s:\n",
94f04347 922 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 923
924 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 925 }
44d8db9e 926
2c4104f0
LP		 927 if (s->sysv_path)
928 fprintf(f,
23a177ef
LP		 929 "%sSysV Init Script Path: %s\n"
930 "%sSysV Init Script has LSB Header: %s\n",
931 prefix, s->sysv_path,
932 prefix, yes_no(s->sysv_has_lsb));
2c4104f0
LP		 933
934 if (s->sysv_start_priority >= 0)
935 fprintf(f,
23a177ef 936 "%sSysVStartPriority: %i\n",
2c4104f0
LP		 937 prefix, s->sysv_start_priority);
938
8309400a
LP		 939 if (s->sysv_runlevels)
940 fprintf(f, "%sSysVRunLevels: %s\n",
941 prefix, s->sysv_runlevels);
23a177ef 942
8c47c732
LP		 943 if (s->status_text)
944 fprintf(f, "%sStatus Text: %s\n",
945 prefix, s->status_text);
946
47be870b 947 free(p2);
5cb5a6ff
LP		 948}
949
034c6ed7
LP		 950static int service_load_pid_file(Service *s) {
951 char *k;
034c6ed7 952 int r;
5925dd3c 953 pid_t pid;
034c6ed7
LP		 954
955 assert(s);
956
957 if (s->main_pid_known)
958 return 0;
959
5e94833f
LP		 960 assert(s->main_pid <= 0);
961
034c6ed7
LP		 962 if (!s->pid_file)
963 return -ENOENT;
964
965 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
966 return r;
967
5925dd3c
LP		 968 r = parse_pid(k, &pid);
969 free(k);
034c6ed7 970
5925dd3c
LP		 971 if (r < 0)
972 return r;
406eaf93 973
5925dd3c
LP		 974 if (kill(pid, 0) < 0 && errno != EPERM) {
975 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
976 (unsigned long) pid, s->pid_file);
b8c597d5
LP		 977 return -ESRCH;
978 }
979
5925dd3c 980 if ((r = service_set_main_pid(s, pid)) < 0)
16f6025e
LP		 981 return r;
982
5925dd3c
LP		 983 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
984 /* FIXME: we need to do something here */
985 return r;
034c6ed7
LP		 986
987 return 0;
988}
989
3e33402a
LP		 990static int service_get_sockets(Service *s, Set **_set) {
991 Set *set;
ceee3d82
LP		 992 Iterator i;
993 char *t;
3e33402a 994 int r;
ceee3d82
LP		 995
996 assert(s);
3e33402a
LP		 997 assert(_set);
998
999 /* Collects all Socket objects that belong to this
1000 * service. Note that a service might have multiple sockets
1001 * via multiple names. */
1002
1003 if (!(set = set_new(NULL, NULL)))
1004 return -ENOMEM;
ceee3d82
LP		 1005
1006 SET_FOREACH(t, UNIT(s)->meta.names, i) {
1007 char *k;
1008 Unit *p;
1009
1010 /* Look for all socket objects that go by any of our
1011 * units and collect their fds */
1012
3e33402a
LP		 1013 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1014 r = -ENOMEM;
1015 goto fail;
1016 }
ceee3d82
LP		 1017
1018 p = manager_get_unit(UNIT(s)->meta.manager, k);
1019 free(k);
1020
8d567588
LP		 1021 if (!p)
1022 continue;
ceee3d82 1023
3e33402a
LP		 1024 if ((r = set_put(set, p)) < 0)
1025 goto fail;
ceee3d82
LP		 1026 }
1027
3e33402a
LP		 1028 *_set = set;
1029 return 0;
1030
1031fail:
1032 set_free(set);
1033 return r;
1034}
1035
e537352b 1036static int service_notify_sockets_dead(Service *s) {
3e33402a
LP		 1037 Iterator i;
1038 Set *set;
47be870b 1039 Socket *sock;
3e33402a
LP		 1040 int r;
1041
1042 assert(s);
1043
1044 /* Notifies all our sockets when we die */
3e33402a
LP		 1045 if ((r = service_get_sockets(s, &set)) < 0)
1046 return r;
1047
47be870b
LP		 1048 SET_FOREACH(sock, set, i)
1049 socket_notify_service_dead(sock);
3e33402a
LP		 1050
1051 set_free(set);
1052
ceee3d82
LP		 1053 return 0;
1054}
1055
034c6ed7
LP		 1056static void service_set_state(Service *s, ServiceState state) {
1057 ServiceState old_state;
5cb5a6ff
LP		 1058 assert(s);
1059
034c6ed7 1060 old_state = s->state;
5cb5a6ff 1061 s->state = state;
034c6ed7
LP		 1062
1063 if (state != SERVICE_START_PRE &&
1064 state != SERVICE_START &&
1065 state != SERVICE_START_POST &&
1066 state != SERVICE_RELOAD &&
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_AUTO_RESTART)
acbb0225 1074 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1075
7d55e835
LP		 1076 if (state != SERVICE_START &&
1077 state != SERVICE_START_POST &&
034c6ed7
LP		 1078 state != SERVICE_RUNNING &&
1079 state != SERVICE_RELOAD &&
1080 state != SERVICE_STOP &&
1081 state != SERVICE_STOP_SIGTERM &&
1082 state != SERVICE_STOP_SIGKILL)
5e94833f 1083 service_unwatch_main_pid(s);
034c6ed7
LP		 1084
1085 if (state != SERVICE_START_PRE &&
1086 state != SERVICE_START &&
1087 state != SERVICE_START_POST &&
1088 state != SERVICE_RELOAD &&
1089 state != SERVICE_STOP &&
1090 state != SERVICE_STOP_SIGTERM &&
1091 state != SERVICE_STOP_SIGKILL &&
1092 state != SERVICE_STOP_POST &&
1093 state != SERVICE_FINAL_SIGTERM &&
e537352b 1094 state != SERVICE_FINAL_SIGKILL) {
5e94833f 1095 service_unwatch_control_pid(s);
034c6ed7 1096 s->control_command = NULL;
a16e1123 1097 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
e537352b 1098 }
034c6ed7 1099
ceee3d82
LP		 1100 if (state == SERVICE_DEAD ||
1101 state == SERVICE_STOP ||
1102 state == SERVICE_STOP_SIGTERM ||
1103 state == SERVICE_STOP_SIGKILL ||
1104 state == SERVICE_STOP_POST ||
1105 state == SERVICE_FINAL_SIGTERM ||
1106 state == SERVICE_FINAL_SIGKILL ||
18c78fb1 1107 state == SERVICE_MAINTENANCE ||
ceee3d82 1108 state == SERVICE_AUTO_RESTART)
e537352b 1109 service_notify_sockets_dead(s);
ceee3d82 1110
4f2d528d
LP		 1111 if (state != SERVICE_START_PRE &&
1112 state != SERVICE_START &&
1113 !(state == SERVICE_DEAD && UNIT(s)->meta.job))
1114 service_close_socket_fd(s);
1115
e537352b 1116 if (old_state != state)
40d50879 1117 log_debug("%s changed %s -> %s", UNIT(s)->meta.id, service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 1118
1119 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 1120}
1121
a16e1123
LP		 1122static int service_coldplug(Unit *u) {
1123 Service *s = SERVICE(u);
1124 int r;
1125
1126 assert(s);
1127 assert(s->state == SERVICE_DEAD);
1128
1129 if (s->deserialized_state != s->state) {
1130
1131 if (s->deserialized_state == SERVICE_START_PRE ||
1132 s->deserialized_state == SERVICE_START ||
1133 s->deserialized_state == SERVICE_START_POST ||
1134 s->deserialized_state == SERVICE_RELOAD ||
1135 s->deserialized_state == SERVICE_STOP ||
1136 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1137 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1138 s->deserialized_state == SERVICE_STOP_POST ||
1139 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1140 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
e558336f
LP		 1141 s->deserialized_state == SERVICE_AUTO_RESTART) {
1142
1143 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1144 usec_t k;
1145
1146 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1147
1148 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1149 return r;
1150 }
1151 }
a16e1123
LP		 1152
1153 if ((s->deserialized_state == SERVICE_START &&
1154 (s->type == SERVICE_FORKING ||
8c47c732
LP		 1155 s->type == SERVICE_DBUS ||
1156 s->type == SERVICE_FINISH ||
1157 s->type == SERVICE_NOTIFY)) ||
a16e1123
LP		 1158 s->deserialized_state == SERVICE_START_POST ||
1159 s->deserialized_state == SERVICE_RUNNING ||
1160 s->deserialized_state == SERVICE_RELOAD ||
1161 s->deserialized_state == SERVICE_STOP ||
1162 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1163 s->deserialized_state == SERVICE_STOP_SIGKILL)
1164 if (s->main_pid > 0)
1165 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1166 return r;
1167
1168 if (s->deserialized_state == SERVICE_START_PRE ||
1169 s->deserialized_state == SERVICE_START ||
1170 s->deserialized_state == SERVICE_START_POST ||
1171 s->deserialized_state == SERVICE_RELOAD ||
1172 s->deserialized_state == SERVICE_STOP ||
1173 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1174 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1175 s->deserialized_state == SERVICE_STOP_POST ||
1176 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1177 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1178 if (s->control_pid > 0)
1179 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1180 return r;
1181
1182 service_set_state(s, s->deserialized_state);
1183 }
1184
1185 return 0;
1186}
1187
44d8db9e
LP		 1188static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1189 Iterator i;
1190 int r;
1191 int *rfds = NULL;
1192 unsigned rn_fds = 0;
3e33402a 1193 Set *set;
47be870b 1194 Socket *sock;
44d8db9e
LP		 1195
1196 assert(s);
1197 assert(fds);
1198 assert(n_fds);
1199
3e33402a
LP		 1200 if ((r = service_get_sockets(s, &set)) < 0)
1201 return r;
1202
47be870b 1203 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 1204 int *cfds;
1205 unsigned cn_fds;
1206
47be870b 1207 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1208 goto fail;
1209
1210 if (!cfds)
1211 continue;
1212
1213 if (!rfds) {
1214 rfds = cfds;
1215 rn_fds = cn_fds;
1216 } else {
1217 int *t;
1218
1219 if (!(t = new(int, rn_fds+cn_fds))) {
1220 free(cfds);
1221 r = -ENOMEM;
1222 goto fail;
1223 }
1224
1225 memcpy(t, rfds, rn_fds);
1226 memcpy(t+rn_fds, cfds, cn_fds);
1227 free(rfds);
1228 free(cfds);
1229
1230 rfds = t;
1231 rn_fds = rn_fds+cn_fds;
1232 }
1233 }
1234
1235 *fds = rfds;
1236 *n_fds = rn_fds;
3e33402a
LP		 1237
1238 set_free(set);
1239
44d8db9e
LP		 1240 return 0;
1241
1242fail:
3e33402a 1243 set_free(set);
44d8db9e 1244 free(rfds);
3e33402a 1245
44d8db9e
LP		 1246 return r;
1247}
1248
81a2b7ce
LP		 1249static int service_spawn(
1250 Service *s,
1251 ExecCommand *c,
1252 bool timeout,
1253 bool pass_fds,
1254 bool apply_permissions,
1255 bool apply_chroot,
1256 pid_t *_pid) {
1257
034c6ed7
LP		 1258 pid_t pid;
1259 int r;
44d8db9e
LP		 1260 int *fds = NULL;
1261 unsigned n_fds = 0;
9e2f7c11 1262 char **argv;
034c6ed7
LP		 1263
1264 assert(s);
1265 assert(c);
1266 assert(_pid);
1267
4f2d528d
LP		 1268 if (pass_fds) {
1269 if (s->socket_fd >= 0) {
1270 fds = &s->socket_fd;
1271 n_fds = 1;
1272 } else if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
44d8db9e 1273 goto fail;
4f2d528d 1274 }
44d8db9e 1275
e558336f 1276 if (timeout && s->timeout_usec) {
acbb0225 1277 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1278 goto fail;
1279 } else
acbb0225 1280 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1281
9e2f7c11
LP		 1282 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1283 r = -ENOMEM;
1284 goto fail;
1285 }
1286
1287 r = exec_spawn(c,
1288 argv,
1289 &s->exec_context,
1290 fds, n_fds,
1137a57c 1291 s->meta.manager->environment,
9e2f7c11
LP		 1292 apply_permissions,
1293 apply_chroot,
1294 UNIT(s)->meta.manager->confirm_spawn,
1295 UNIT(s)->meta.cgroup_bondings,
1296 &pid);
1297
1298 strv_free(argv);
1299 if (r < 0)
034c6ed7
LP		 1300 goto fail;
1301
4f2d528d
LP		 1302 if (fds) {
1303 if (s->socket_fd >= 0)
1304 service_close_socket_fd(s);
1305 else
1306 free(fds);
1307 }
1308
87f0e418 1309 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1310 /* FIXME: we need to do something here */
1311 goto fail;
1312
1313 *_pid = pid;
1314
5cb5a6ff 1315 return 0;
034c6ed7
LP		 1316
1317fail:
44d8db9e
LP		 1318 free(fds);
1319
034c6ed7 1320 if (timeout)
acbb0225 1321 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1322
1323 return r;
1324}
1325
80876c20
LP		 1326static int main_pid_good(Service *s) {
1327 assert(s);
1328
1329 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1330 * don't know */
1331
1332 /* If we know the pid file, then lets just check if it is
1333 * still valid */
1334 if (s->main_pid_known)
1335 return s->main_pid > 0;
1336
1337 /* We don't know the pid */
1338 return -EAGAIN;
1339}
1340
1341static int control_pid_good(Service *s) {
1342 assert(s);
1343
1344 return s->control_pid > 0;
1345}
1346
1347static int cgroup_good(Service *s) {
1348 int r;
1349
1350 assert(s);
1351
1352 if (s->valid_no_process)
1353 return -EAGAIN;
1354
1355 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->meta.cgroup_bondings)) < 0)
1356 return r;
1357
1358 return !r;
1359}
1360
034c6ed7
LP		 1361static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1362 int r;
1363 assert(s);
1364
1365 if (!success)
1366 s->failure = true;
1367
1368 if (allow_restart &&
3a762661 1369 s->allow_restart &&
034c6ed7
LP		 1370 (s->restart == SERVICE_RESTART_ALWAYS ||
1371 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1372
acbb0225 1373 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1374 goto fail;
1375
1376 service_set_state(s, SERVICE_AUTO_RESTART);
1377 } else
18c78fb1 1378 service_set_state(s, s->failure ? SERVICE_MAINTENANCE : SERVICE_DEAD);
034c6ed7
LP		 1379
1380 return;
1381
1382fail:
9e2f7c11 1383 log_warning("%s failed to run install restart timer: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1384 service_enter_dead(s, false, false);
1385}
1386
1387static void service_enter_signal(Service *s, ServiceState state, bool success);
1388
1389static void service_enter_stop_post(Service *s, bool success) {
1390 int r;
1391 assert(s);
1392
1393 if (!success)
1394 s->failure = true;
1395
5e94833f
LP		 1396 service_unwatch_control_pid(s);
1397
a16e1123 1398 s->control_command_id = SERVICE_EXEC_STOP_POST;
80876c20 1399 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
81a2b7ce
LP		 1400 if ((r = service_spawn(s,
1401 s->control_command,
1402 true,
1403 false,
1404 !s->permissions_start_only,
1405 !s->root_directory_start_only,
1406 &s->control_pid)) < 0)
034c6ed7
LP		 1407 goto fail;
1408
d6ea93e3 1409
80876c20
LP		 1410 service_set_state(s, SERVICE_STOP_POST);
1411 } else
1412 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
034c6ed7
LP		 1413
1414 return;
1415
1416fail:
7020e8be 1417 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1418 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1419}
1420
1421static void service_enter_signal(Service *s, ServiceState state, bool success) {
1422 int r;
1423 bool sent = false;
1424
1425 assert(s);
1426
1427 if (!success)
1428 s->failure = true;
1429
80876c20
LP		 1430 if (s->kill_mode != KILL_NONE) {
1431 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
034c6ed7 1432
50159e6a 1433 if (s->kill_mode == KILL_CONTROL_GROUP) {
034c6ed7 1434
50159e6a
LP		 1435 if ((r = cgroup_bonding_kill_list(UNIT(s)->meta.cgroup_bondings, sig)) < 0) {
1436 if (r != -EAGAIN && r != -ESRCH)
1437 goto fail;
1438 } else
034c6ed7
LP		 1439 sent = true;
1440 }
1441
50159e6a
LP		 1442 if (!sent) {
1443 r = 0;
80876c20 1444
50159e6a
LP		 1445 if (s->main_pid > 0) {
1446 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1447 r = -errno;
1448 else
1449 sent = true;
1450 }
1451
1452 if (s->control_pid > 0) {
1453 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1454 r = -errno;
1455 else
1456 sent = true;
1457 }
1458
1459 if (r < 0)
1460 goto fail;
1461 }
d6ea93e3 1462 }
034c6ed7 1463
e93bc5a6 1464 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
e558336f
LP		 1465 if (s->timeout_usec > 0)
1466 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1467 goto fail;
d6ea93e3 1468
80876c20
LP		 1469 service_set_state(s, state);
1470 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1471 service_enter_stop_post(s, true);
1472 else
034c6ed7
LP		 1473 service_enter_dead(s, true, true);
1474
1475 return;
1476
1477fail:
9e2f7c11 1478 log_warning("%s failed to kill processes: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7 1479
80876c20 1480 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
034c6ed7
LP		 1481 service_enter_stop_post(s, false);
1482 else
1483 service_enter_dead(s, false, true);
1484}
1485
1486static void service_enter_stop(Service *s, bool success) {
1487 int r;
5925dd3c
LP		 1488 pid_t pid;
1489
034c6ed7
LP		 1490 assert(s);
1491
1492 if (!success)
1493 s->failure = true;
1494
5e94833f
LP		 1495 service_unwatch_control_pid(s);
1496
a16e1123 1497 s->control_command_id = SERVICE_EXEC_STOP;
80876c20 1498 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
81a2b7ce
LP		 1499 if ((r = service_spawn(s,
1500 s->control_command,
1501 true,
1502 false,
1503 !s->permissions_start_only,
1504 !s->root_directory_start_only,
5925dd3c 1505 &pid)) < 0)
034c6ed7
LP		 1506 goto fail;
1507
5925dd3c 1508 service_set_control_pid(s, pid);
80876c20
LP		 1509 service_set_state(s, SERVICE_STOP);
1510 } else
034c6ed7
LP		 1511 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1512
1513 return;
1514
1515fail:
7020e8be 1516 log_warning("%s failed to run 'stop' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1517 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1518}
1519
80876c20
LP		 1520static void service_enter_running(Service *s, bool success) {
1521 assert(s);
1522
1523 if (!success)
1524 s->failure = true;
1525
05e343b7
LP		 1526 if (main_pid_good(s) != 0 &&
1527 cgroup_good(s) != 0 &&
1528 (s->bus_name_good || s->type != SERVICE_DBUS))
80876c20
LP		 1529 service_set_state(s, SERVICE_RUNNING);
1530 else if (s->valid_no_process)
1531 service_set_state(s, SERVICE_EXITED);
1532 else
1533 service_enter_stop(s, true);
1534}
1535
034c6ed7
LP		 1536static void service_enter_start_post(Service *s) {
1537 int r;
5925dd3c 1538 pid_t pid;
034c6ed7
LP		 1539 assert(s);
1540
5e94833f
LP		 1541 service_unwatch_control_pid(s);
1542
a16e1123 1543 s->control_command_id = SERVICE_EXEC_START_POST;
80876c20 1544 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
81a2b7ce
LP		 1545 if ((r = service_spawn(s,
1546 s->control_command,
1547 true,
1548 false,
1549 !s->permissions_start_only,
1550 !s->root_directory_start_only,
5925dd3c 1551 &pid)) < 0)
034c6ed7
LP		 1552 goto fail;
1553
5925dd3c 1554 service_set_control_pid(s, pid);
80876c20
LP		 1555 service_set_state(s, SERVICE_START_POST);
1556 } else
1557 service_enter_running(s, true);
034c6ed7
LP		 1558
1559 return;
1560
1561fail:
7020e8be 1562 log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1563 service_enter_stop(s, false);
1564}
1565
1566static void service_enter_start(Service *s) {
1567 pid_t pid;
1568 int r;
1569
1570 assert(s);
1571
1572 assert(s->exec_command[SERVICE_EXEC_START]);
1573 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1574
80876c20
LP		 1575 if (s->type == SERVICE_FORKING)
1576 service_unwatch_control_pid(s);
1577 else
1578 service_unwatch_main_pid(s);
1579
81a2b7ce
LP		 1580 if ((r = service_spawn(s,
1581 s->exec_command[SERVICE_EXEC_START],
8c47c732 1582 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
81a2b7ce
LP		 1583 true,
1584 true,
1585 true,
1586 &pid)) < 0)
034c6ed7
LP		 1587 goto fail;
1588
1589 if (s->type == SERVICE_SIMPLE) {
1590 /* For simple services we immediately start
1591 * the START_POST binaries. */
1592
5925dd3c 1593 service_set_main_pid(s, pid);
034c6ed7
LP		 1594 service_enter_start_post(s);
1595
1596 } else if (s->type == SERVICE_FORKING) {
1597
1598 /* For forking services we wait until the start
1599 * process exited. */
1600
a16e1123 1601 s->control_command_id = SERVICE_EXEC_START;
034c6ed7 1602 s->control_command = s->exec_command[SERVICE_EXEC_START];
5925dd3c
LP		 1603
1604 service_set_control_pid(s, pid);
80876c20
LP		 1605 service_set_state(s, SERVICE_START);
1606
05e343b7 1607 } else if (s->type == SERVICE_FINISH ||
8c47c732
LP		 1608 s->type == SERVICE_DBUS ||
1609 s->type == SERVICE_NOTIFY) {
7d55e835
LP		 1610
1611 /* For finishing services we wait until the start
1612 * process exited, too, but it is our main process. */
1613
05e343b7 1614 /* For D-Bus services we know the main pid right away,
8c47c732
LP		 1615 * but wait for the bus name to appear on the
1616 * bus. Notify services are similar. */
05e343b7 1617
5925dd3c 1618 service_set_main_pid(s, pid);
80876c20 1619 service_set_state(s, SERVICE_START);
034c6ed7
LP		 1620 } else
1621 assert_not_reached("Unknown service type");
1622
1623 return;
1624
1625fail:
7020e8be 1626 log_warning("%s failed to run 'start' task: %s", UNIT(s)->meta.id, strerror(-r));
80876c20 1627 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 1628}
1629
1630static void service_enter_start_pre(Service *s) {
1631 int r;
5925dd3c 1632 pid_t pid;
034c6ed7
LP		 1633
1634 assert(s);
1635
5e94833f
LP		 1636 service_unwatch_control_pid(s);
1637
a16e1123 1638 s->control_command_id = SERVICE_EXEC_START_PRE;
80876c20 1639 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
81a2b7ce
LP		 1640 if ((r = service_spawn(s,
1641 s->control_command,
1642 true,
1643 false,
1644 !s->permissions_start_only,
1645 !s->root_directory_start_only,
5925dd3c 1646 &pid)) < 0)
034c6ed7
LP		 1647 goto fail;
1648
5925dd3c 1649 service_set_control_pid(s, pid);
80876c20
LP		 1650 service_set_state(s, SERVICE_START_PRE);
1651 } else
034c6ed7
LP		 1652 service_enter_start(s);
1653
1654 return;
1655
1656fail:
7020e8be 1657 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1658 service_enter_dead(s, false, true);
1659}
1660
1661static void service_enter_restart(Service *s) {
1662 int r;
1663 assert(s);
1664
9ea9a0c8
LP		 1665 service_enter_dead(s, true, false);
1666
87f0e418 1667 if ((r = manager_add_job(UNIT(s)->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL)) < 0)
034c6ed7
LP		 1668 goto fail;
1669
9e2f7c11 1670 log_debug("%s scheduled restart job.", UNIT(s)->meta.id);
034c6ed7
LP		 1671 return;
1672
1673fail:
1674
9e2f7c11 1675 log_warning("%s failed to schedule restart job: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1676 service_enter_dead(s, false, false);
1677}
1678
1679static void service_enter_reload(Service *s) {
1680 int r;
5925dd3c 1681 pid_t pid;
034c6ed7
LP		 1682
1683 assert(s);
1684
5e94833f
LP		 1685 service_unwatch_control_pid(s);
1686
a16e1123 1687 s->control_command_id = SERVICE_EXEC_RELOAD;
80876c20 1688 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
81a2b7ce
LP		 1689 if ((r = service_spawn(s,
1690 s->control_command,
1691 true,
1692 false,
1693 !s->permissions_start_only,
1694 !s->root_directory_start_only,
5925dd3c 1695 &pid)) < 0)
034c6ed7
LP		 1696 goto fail;
1697
5925dd3c 1698 service_set_control_pid(s, pid);
80876c20
LP		 1699 service_set_state(s, SERVICE_RELOAD);
1700 } else
1701 service_enter_running(s, true);
034c6ed7
LP		 1702
1703 return;
1704
1705fail:
7020e8be 1706 log_warning("%s failed to run 'reload' task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7
LP		 1707 service_enter_stop(s, false);
1708}
1709
1710static void service_run_next(Service *s, bool success) {
1711 int r;
5925dd3c 1712 pid_t pid;
034c6ed7
LP		 1713
1714 assert(s);
1715 assert(s->control_command);
1716 assert(s->control_command->command_next);
1717
1718 if (!success)
1719 s->failure = true;
1720
1721 s->control_command = s->control_command->command_next;
1722
5e94833f
LP		 1723 service_unwatch_control_pid(s);
1724
81a2b7ce
LP		 1725 if ((r = service_spawn(s,
1726 s->control_command,
1727 true,
1728 false,
1729 !s->permissions_start_only,
1730 !s->root_directory_start_only,
5925dd3c 1731 &pid)) < 0)
034c6ed7
LP		 1732 goto fail;
1733
5925dd3c 1734 service_set_control_pid(s, pid);
034c6ed7
LP		 1735 return;
1736
1737fail:
7020e8be 1738 log_warning("%s failed to run spawn next task: %s", UNIT(s)->meta.id, strerror(-r));
034c6ed7 1739
80876c20
LP		 1740 if (s->state == SERVICE_START_PRE)
1741 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1742 else if (s->state == SERVICE_STOP)
1743 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
034c6ed7
LP		 1744 else if (s->state == SERVICE_STOP_POST)
1745 service_enter_dead(s, false, true);
1746 else
1747 service_enter_stop(s, false);
5cb5a6ff
LP		 1748}
1749
87f0e418
LP		 1750static int service_start(Unit *u) {
1751 Service *s = SERVICE(u);
5cb5a6ff
LP		 1752
1753 assert(s);
1754
034c6ed7
LP		 1755 /* We cannot fulfill this request right now, try again later
1756 * please! */
1757 if (s->state == SERVICE_STOP ||
1758 s->state == SERVICE_STOP_SIGTERM ||
1759 s->state == SERVICE_STOP_SIGKILL ||
1760 s->state == SERVICE_STOP_POST ||
1761 s->state == SERVICE_FINAL_SIGTERM ||
1762 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1763 return -EAGAIN;
1764
034c6ed7
LP		 1765 /* Already on it! */
1766 if (s->state == SERVICE_START_PRE ||
1767 s->state == SERVICE_START ||
1768 s->state == SERVICE_START_POST)
1769 return 0;
1770
18c78fb1 1771 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTENANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1772
1e2e8133
LP		 1773 /* Make sure we don't enter a busy loop of some kind. */
1774 if (!ratelimit_test(&s->ratelimit)) {
9e2f7c11 1775 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
d5159713 1776 return -ECANCELED;
1e2e8133
LP		 1777 }
1778
034c6ed7
LP		 1779 s->failure = false;
1780 s->main_pid_known = false;
3a762661 1781 s->allow_restart = true;
034c6ed7
LP		 1782
1783 service_enter_start_pre(s);
1784 return 0;
5cb5a6ff
LP		 1785}
1786
87f0e418
LP		 1787static int service_stop(Unit *u) {
1788 Service *s = SERVICE(u);
5cb5a6ff
LP		 1789
1790 assert(s);
1791
e537352b 1792 /* Cannot do this now */
034c6ed7
LP		 1793 if (s->state == SERVICE_START_PRE ||
1794 s->state == SERVICE_START ||
1795 s->state == SERVICE_START_POST ||
1796 s->state == SERVICE_RELOAD)
1797 return -EAGAIN;
1798
e537352b
LP		 1799 /* Already on it */
1800 if (s->state == SERVICE_STOP ||
1801 s->state == SERVICE_STOP_SIGTERM ||
1802 s->state == SERVICE_STOP_SIGKILL ||
1803 s->state == SERVICE_STOP_POST ||
1804 s->state == SERVICE_FINAL_SIGTERM ||
1805 s->state == SERVICE_FINAL_SIGKILL)
1806 return 0;
1807
034c6ed7
LP		 1808 if (s->state == SERVICE_AUTO_RESTART) {
1809 service_set_state(s, SERVICE_DEAD);
1810 return 0;
1811 }
1812
80876c20 1813 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
5cb5a6ff 1814
3a762661
LP		 1815 /* This is a user request, so don't do restarts on this
1816 * shutdown. */
1817 s->allow_restart = false;
1818
034c6ed7 1819 service_enter_stop(s, true);
5cb5a6ff
LP		 1820 return 0;
1821}
1822
87f0e418
LP		 1823static int service_reload(Unit *u) {
1824 Service *s = SERVICE(u);
034c6ed7
LP		 1825
1826 assert(s);
1827
80876c20 1828 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
034c6ed7
LP		 1829
1830 service_enter_reload(s);
5cb5a6ff
LP		 1831 return 0;
1832}
1833
87f0e418
LP		 1834static bool service_can_reload(Unit *u) {
1835 Service *s = SERVICE(u);
034c6ed7
LP		 1836
1837 assert(s);
1838
1839 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1840}
1841
a16e1123
LP		 1842static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1843 Service *s = SERVICE(u);
1844
1845 assert(u);
1846 assert(f);
1847 assert(fds);
1848
1849 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1850 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1851
1852 if (s->control_pid > 0)
5925dd3c 1853 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
a16e1123 1854
5925dd3c
LP		 1855 if (s->main_pid_known && s->main_pid > 0)
1856 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
a16e1123
LP		 1857
1858 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1859
1860 /* There's a minor uncleanliness here: if there are multiple
1861 * commands attached here, we will start from the first one
1862 * again */
1863 if (s->control_command_id >= 0)
825636e5 1864 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
a16e1123
LP		 1865
1866 if (s->socket_fd >= 0) {
1867 int copy;
1868
1869 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1870 return copy;
1871
1872 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1873 }
1874
1875 return 0;
1876}
1877
1878static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
1879 Service *s = SERVICE(u);
1880 int r;
1881
1882 assert(u);
1883 assert(key);
1884 assert(value);
1885 assert(fds);
1886
1887 if (streq(key, "state")) {
1888 ServiceState state;
1889
1890 if ((state = service_state_from_string(value)) < 0)
1891 log_debug("Failed to parse state value %s", value);
1892 else
1893 s->deserialized_state = state;
1894 } else if (streq(key, "failure")) {
1895 int b;
1896
1897 if ((b = parse_boolean(value)) < 0)
1898 log_debug("Failed to parse failure value %s", value);
1899 else
1900 s->failure = b || s->failure;
1901 } else if (streq(key, "control-pid")) {
5925dd3c 1902 pid_t pid;
a16e1123 1903
5925dd3c 1904 if ((r = parse_pid(value, &pid)) < 0)
a16e1123
LP		 1905 log_debug("Failed to parse control-pid value %s", value);
1906 else
5925dd3c 1907 service_set_control_pid(s, pid);
a16e1123 1908 } else if (streq(key, "main-pid")) {
5925dd3c 1909 pid_t pid;
a16e1123 1910
5925dd3c 1911 if ((r = parse_pid(value, &pid)) < 0)
a16e1123
LP		 1912 log_debug("Failed to parse main-pid value %s", value);
1913 else
5925dd3c 1914 service_set_main_pid(s, (pid_t) pid);
a16e1123
LP		 1915 } else if (streq(key, "main-pid-known")) {
1916 int b;
1917
1918 if ((b = parse_boolean(value)) < 0)
1919 log_debug("Failed to parse main-pid-known value %s", value);
1920 else
1921 s->main_pid_known = b;
1922 } else if (streq(key, "control-command")) {
1923 ServiceExecCommand id;
1924
1925 if ((id = service_exec_command_from_string(value)) < 0)
1926 log_debug("Failed to parse exec-command value %s", value);
1927 else {
1928 s->control_command_id = id;
1929 s->control_command = s->exec_command[id];
1930 }
1931 } else if (streq(key, "socket-fd")) {
1932 int fd;
1933
1934 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
1935 log_debug("Failed to parse socket-fd value %s", value);
1936 else {
1937
1938 if (s->socket_fd >= 0)
1939 close_nointr_nofail(s->socket_fd);
1940 s->socket_fd = fdset_remove(fds, fd);
1941 }
1942 } else
1943 log_debug("Unknown serialization key '%s'", key);
1944
1945 return 0;
1946}
1947
87f0e418
LP		 1948static UnitActiveState service_active_state(Unit *u) {
1949 assert(u);
5cb5a6ff 1950
acbb0225 1951 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 1952}
1953
10a94420
LP		 1954static const char *service_sub_state_to_string(Unit *u) {
1955 assert(u);
1956
1957 return service_state_to_string(SERVICE(u)->state);
1958}
1959
701cc384
LP		 1960static bool service_check_gc(Unit *u) {
1961 Service *s = SERVICE(u);
1962
1963 assert(s);
1964
1965 return !!s->sysv_path;
1966}
1967
1968static bool service_check_snapshot(Unit *u) {
1969 Service *s = SERVICE(u);
1970
1971 assert(s);
1972
1973 return !s->got_socket_fd;
1974}
1975
87f0e418
LP		 1976static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
1977 Service *s = SERVICE(u);
034c6ed7 1978 bool success;
5cb5a6ff
LP		 1979
1980 assert(s);
034c6ed7
LP		 1981 assert(pid >= 0);
1982
cb8a8f78 1983 success = is_clean_exit(code, status);
034c6ed7
LP		 1984 s->failure = s->failure || !success;
1985
1986 if (s->main_pid == pid) {
1987
1988 exec_status_fill(&s->main_exec_status, pid, code, status);
1989 s->main_pid = 0;
1990
8c47c732 1991 if (s->type != SERVICE_FORKING) {
034c6ed7
LP		 1992 assert(s->exec_command[SERVICE_EXEC_START]);
1993 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
1994 }
1995
9e2f7c11 1996 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 1997
1998 /* The service exited, so the service is officially
1999 * gone. */
2000
2001 switch (s->state) {
2002
2003 case SERVICE_START_POST:
2004 case SERVICE_RELOAD:
2005 case SERVICE_STOP:
2006 /* Need to wait until the operation is
2007 * done */
2008 break;
2009
7d55e835 2010 case SERVICE_START:
c4653a4d
LP		 2011 if (s->type == SERVICE_FINISH) {
2012 /* This was our main goal, so let's go on */
2013 if (success)
2014 service_enter_start_post(s);
2015 else
2016 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2017 break;
2018 } else {
8c47c732 2019 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
7d55e835 2020
c4653a4d
LP		 2021 /* Fall through */
2022 }
7d55e835 2023
034c6ed7 2024 case SERVICE_RUNNING:
80876c20 2025 service_enter_running(s, success);
034c6ed7
LP		 2026 break;
2027
2028 case SERVICE_STOP_SIGTERM:
2029 case SERVICE_STOP_SIGKILL:
2030
2031 if (!control_pid_good(s))
2032 service_enter_stop_post(s, success);
5cb5a6ff 2033
034c6ed7
LP		 2034 /* If there is still a control process, wait for that first */
2035 break;
5cb5a6ff 2036
034c6ed7
LP		 2037 default:
2038 assert_not_reached("Uh, main process died at wrong time.");
2039 }
5cb5a6ff 2040
034c6ed7 2041 } else if (s->control_pid == pid) {
034c6ed7 2042
a16e1123
LP		 2043 if (s->control_command)
2044 exec_status_fill(&s->control_command->exec_status, pid, code, status);
2045
034c6ed7
LP		 2046 s->control_pid = 0;
2047
9e2f7c11 2048 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 2049
2050 /* If we are shutting things down anyway we
2051 * don't care about failing commands. */
2052
a16e1123 2053 if (s->control_command && s->control_command->command_next && success) {
034c6ed7
LP		 2054
2055 /* There is another command to *
2056 * execute, so let's do that. */
2057
9e2f7c11 2058 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
034c6ed7
LP		 2059 service_run_next(s, success);
2060
80876c20 2061 } else {
034c6ed7
LP		 2062 /* No further commands for this step, so let's
2063 * figure out what to do next */
2064
a16e1123
LP		 2065 s->control_command = NULL;
2066 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2067
9e2f7c11 2068 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
bd982a8b 2069
034c6ed7
LP		 2070 switch (s->state) {
2071
2072 case SERVICE_START_PRE:
2073 if (success)
2074 service_enter_start(s);
2075 else
80876c20 2076 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2077 break;
2078
2079 case SERVICE_START:
2080 assert(s->type == SERVICE_FORKING);
2081
2082 /* Let's try to load the pid
2083 * file here if we can. We
2084 * ignore the return value,
2085 * since the PID file might
2086 * actually be created by a
2087 * START_POST script */
2088
2089 if (success) {
2090 if (s->pid_file)
2091 service_load_pid_file(s);
2092
2093 service_enter_start_post(s);
2094 } else
80876c20 2095 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2096
2097 break;
2098
2099 case SERVICE_START_POST:
2100 if (success && s->pid_file && !s->main_pid_known) {
2101 int r;
2102
2103 /* Hmm, let's see if we can
2104 * load the pid now after the
2105 * start-post scripts got
2106 * executed. */
2107
2108 if ((r = service_load_pid_file(s)) < 0)
9e2f7c11 2109 log_warning("%s: failed to load PID file %s: %s", UNIT(s)->meta.id, s->pid_file, strerror(-r));
034c6ed7
LP		 2110 }
2111
2112 /* Fall through */
2113
2114 case SERVICE_RELOAD:
80876c20
LP		 2115 if (success)
2116 service_enter_running(s, true);
2117 else
034c6ed7
LP		 2118 service_enter_stop(s, false);
2119
2120 break;
2121
2122 case SERVICE_STOP:
80876c20 2123 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
034c6ed7
LP		 2124 break;
2125
2126 case SERVICE_STOP_SIGTERM:
2127 case SERVICE_STOP_SIGKILL:
2128 if (main_pid_good(s) <= 0)
2129 service_enter_stop_post(s, success);
2130
2131 /* If there is still a service
2132 * process around, wait until
2133 * that one quit, too */
2134 break;
2135
2136 case SERVICE_STOP_POST:
2137 case SERVICE_FINAL_SIGTERM:
2138 case SERVICE_FINAL_SIGKILL:
2139 service_enter_dead(s, success, true);
2140 break;
2141
2142 default:
2143 assert_not_reached("Uh, control process died at wrong time.");
2144 }
2145 }
8c47c732 2146 }
034c6ed7
LP		 2147}
2148
acbb0225 2149static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 2150 Service *s = SERVICE(u);
034c6ed7
LP		 2151
2152 assert(s);
2153 assert(elapsed == 1);
2154
acbb0225 2155 assert(w == &s->timer_watch);
034c6ed7
LP		 2156
2157 switch (s->state) {
2158
2159 case SERVICE_START_PRE:
2160 case SERVICE_START:
9e2f7c11 2161 log_warning("%s operation timed out. Terminating.", u->meta.id);
80876c20
LP		 2162 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2163 break;
2164
034c6ed7
LP		 2165 case SERVICE_START_POST:
2166 case SERVICE_RELOAD:
9e2f7c11 2167 log_warning("%s operation timed out. Stopping.", u->meta.id);
034c6ed7
LP		 2168 service_enter_stop(s, false);
2169 break;
2170
2171 case SERVICE_STOP:
9e2f7c11 2172 log_warning("%s stopping timed out. Terminating.", u->meta.id);
034c6ed7
LP		 2173 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2174 break;
2175
2176 case SERVICE_STOP_SIGTERM:
9e2f7c11 2177 log_warning("%s stopping timed out. Killing.", u->meta.id);
034c6ed7
LP		 2178 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2179 break;
2180
2181 case SERVICE_STOP_SIGKILL:
2182 /* Uh, wie sent a SIGKILL and it is still not gone?
2183 * Must be something we cannot kill, so let's just be
2184 * weirded out and continue */
2185
9e2f7c11 2186 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
034c6ed7
LP		 2187 service_enter_stop_post(s, false);
2188 break;
2189
2190 case SERVICE_STOP_POST:
9e2f7c11 2191 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
034c6ed7
LP		 2192 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2193 break;
2194
2195 case SERVICE_FINAL_SIGTERM:
9e2f7c11 2196 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
034c6ed7
LP		 2197 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2198 break;
2199
2200 case SERVICE_FINAL_SIGKILL:
18c78fb1 2201 log_warning("%s still around after SIGKILL (2). Entering maintenance mode.", u->meta.id);
034c6ed7
LP		 2202 service_enter_dead(s, false, true);
2203 break;
2204
2205 case SERVICE_AUTO_RESTART:
9e2f7c11 2206 log_debug("%s holdoff time over, scheduling restart.", u->meta.id);
034c6ed7
LP		 2207 service_enter_restart(s);
2208 break;
2209
2210 default:
2211 assert_not_reached("Timeout at wrong time.");
2212 }
5cb5a6ff
LP		 2213}
2214
8e274523
LP		 2215static void service_cgroup_notify_event(Unit *u) {
2216 Service *s = SERVICE(u);
2217
2218 assert(u);
2219
9e2f7c11 2220 log_debug("%s: cgroup is empty", u->meta.id);
8e274523
LP		 2221
2222 switch (s->state) {
2223
2224 /* Waiting for SIGCHLD is usually more interesting,
2225 * because it includes return codes/signals. Which is
2226 * why we ignore the cgroup events for most cases,
2227 * except when we don't know pid which to expect the
2228 * SIGCHLD for. */
2229
2230 case SERVICE_RUNNING:
80876c20 2231 service_enter_running(s, true);
8e274523
LP		 2232 break;
2233
2234 default:
2235 ;
2236 }
2237}
2238
8c47c732
LP		 2239static void service_notify_message(Unit *u, char **tags) {
2240 Service *s = SERVICE(u);
2241 const char *e;
2242
2243 assert(u);
2244
2245 log_debug("%s: Got message", u->meta.id);
2246
2247 /* Interpret MAINPID= */
2248 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2249 (s->state == SERVICE_START ||
2250 s->state == SERVICE_START_POST ||
2251 s->state == SERVICE_RUNNING ||
2252 s->state == SERVICE_RELOAD)) {
5925dd3c 2253 pid_t pid;
8c47c732 2254
5925dd3c 2255 if (parse_pid(e + 8, &pid) < 0)
8c47c732
LP		 2256 log_warning("Failed to parse %s", e);
2257 else {
2258 log_debug("%s: got %s", u->meta.id, e);
5925dd3c 2259 service_set_main_pid(s, pid);
8c47c732
LP		 2260 }
2261 }
2262
2263 /* Interpret READY= */
2264 if (s->type == SERVICE_NOTIFY &&
2265 s->state == SERVICE_START &&
2266 strv_find(tags, "READY=1")) {
2267 log_debug("%s: got READY=1", u->meta.id);
2268
2269 service_enter_start_post(s);
2270 }
2271
2272 /* Interpret STATUS= */
2273 if ((e = strv_find_prefix(tags, "STATUS="))) {
2274 char *t;
2275
2276 if (!(t = strdup(e+7))) {
2277 log_error("Failed to allocate string.");
2278 return;
2279 }
2280
2281 log_debug("%s: got %s", u->meta.id, e);
2282
2283 free(s->status_text);
2284 s->status_text = t;
2285 }
2286}
2287
2c4104f0 2288static int service_enumerate(Manager *m) {
2c4104f0
LP		 2289 char **p;
2290 unsigned i;
2291 DIR *d = NULL;
2292 char *path = NULL, *fpath = NULL, *name = NULL;
2293 int r;
2294
2295 assert(m);
2296
84e3543e 2297 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
09cd1ab1 2298 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2c4104f0
LP		 2299 struct dirent *de;
2300
2301 free(path);
2302 path = NULL;
09cd1ab1 2303 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2c4104f0
LP		 2304 r = -ENOMEM;
2305 goto finish;
2306 }
2307
2308 if (d)
2309 closedir(d);
2310
2311 if (!(d = opendir(path))) {
2312 if (errno != ENOENT)
2313 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2314
2315 continue;
2316 }
2317
2318 while ((de = readdir(d))) {
6542952f 2319 Unit *service;
db06e3b6 2320 int a, b;
2c4104f0
LP		 2321
2322 if (ignore_file(de->d_name))
2323 continue;
2324
2325 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2326 continue;
2327
2328 if (strlen(de->d_name) < 4)
2329 continue;
2330
db06e3b6
LP		 2331 a = undecchar(de->d_name[1]);
2332 b = undecchar(de->d_name[2]);
2333
2334 if (a < 0 || b < 0)
2335 continue;
2336
2c4104f0
LP		 2337 free(fpath);
2338 fpath = NULL;
09cd1ab1 2339 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2c4104f0
LP		 2340 r = -ENOMEM;
2341 goto finish;
2342 }
2343
2344 if (access(fpath, X_OK) < 0) {
2345
2346 if (errno != ENOENT)
2347 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2348
2349 continue;
2350 }
2351
2352 free(name);
b7ccee3c 2353 if (!(name = sysv_translate_name(de->d_name + 3))) {
2c4104f0
LP		 2354 r = -ENOMEM;
2355 goto finish;
2356 }
2357
fbe9f3a9
LP		 2358 if ((r = manager_load_unit_prepare(m, name, NULL, &service)) < 0) {
2359 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2360 continue;
2361 }
2c4104f0 2362
09cd1ab1 2363 if (de->d_name[0] == 'S' &&
fc5df99e 2364 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT))
fbe9f3a9
LP		 2365 SERVICE(service)->sysv_start_priority =
2366 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
db06e3b6
LP		 2367
2368 manager_dispatch_load_queue(m);
2369 service = unit_follow_merge(service);
2370
2c4104f0 2371 if (de->d_name[0] == 'S') {
6542952f
LP		 2372 Unit *runlevel_target;
2373
09cd1ab1 2374 if ((r = manager_load_unit(m, rcnd_table[i].target, NULL, &runlevel_target)) < 0)
6542952f
LP		 2375 goto finish;
2376
2377 if ((r = unit_add_dependency(runlevel_target, UNIT_WANTS, service, true)) < 0)
2c4104f0
LP		 2378 goto finish;
2379
a0fcc5f6 2380 if ((r = unit_add_dependency(service, UNIT_BEFORE, runlevel_target, true)) < 0)
2c4104f0 2381 goto finish;
23a177ef 2382
fc5df99e
LP		 2383 } else if (de->d_name[0] == 'K' &&
2384 (rcnd_table[i].type == RUNLEVEL_DOWN ||
2385 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
6542952f
LP		 2386 Unit *shutdown_target;
2387
23a177ef
LP		 2388 /* We honour K links only for
2389 * halt/reboot. For the normal
2390 * runlevels we assume the
2391 * stop jobs will be
2392 * implicitly added by the
6542952f
LP		 2393 * core logic. Also, we don't
2394 * really distuingish here
2395 * between the runlevels 0 and
2396 * 6 and just add them to the
fc5df99e
LP		 2397 * special shutdown target. On
2398 * SUSE the boot.d/ runlevel
2399 * is also used for shutdown,
2400 * so we add links for that
2401 * too to the shutdown
2402 * target.*/
6542952f
LP		 2403
2404 if ((r = manager_load_unit(m, SPECIAL_SHUTDOWN_TARGET, NULL, &shutdown_target)) < 0)
2405 goto finish;
23a177ef 2406
a0fcc5f6 2407 if ((r = unit_add_dependency(service, UNIT_CONFLICTS, shutdown_target, true)) < 0)
2c4104f0
LP		 2408 goto finish;
2409
a0fcc5f6 2410 if ((r = unit_add_dependency(service, UNIT_BEFORE, shutdown_target, true)) < 0)
2c4104f0
LP		 2411 goto finish;
2412 }
2413 }
2414 }
2415
2416 r = 0;
2417
2418finish:
2419 free(path);
2420 free(fpath);
2421 free(name);
fbe9f3a9
LP		 2422
2423 if (d)
2424 closedir(d);
2c4104f0
LP		 2425
2426 return r;
2427}
2428
05e343b7
LP		 2429static void service_bus_name_owner_change(
2430 Unit *u,
2431 const char *name,
2432 const char *old_owner,
2433 const char *new_owner) {
2434
2435 Service *s = SERVICE(u);
2436
2437 assert(s);
2438 assert(name);
2439
2440 assert(streq(s->bus_name, name));
2441 assert(old_owner || new_owner);
2442
2443 if (old_owner && new_owner)
2444 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2445 else if (old_owner)
2446 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2447 else
2448 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2449
2450 s->bus_name_good = !!new_owner;
2451
2452 if (s->type == SERVICE_DBUS) {
2453
2454 /* service_enter_running() will figure out what to
2455 * do */
2456 if (s->state == SERVICE_RUNNING)
2457 service_enter_running(s, true);
2458 else if (s->state == SERVICE_START && new_owner)
2459 service_enter_start_post(s);
2460
2461 } else if (new_owner &&
2462 s->main_pid <= 0 &&
2463 (s->state == SERVICE_START ||
2464 s->state == SERVICE_START_POST ||
2465 s->state == SERVICE_RUNNING ||
2466 s->state == SERVICE_RELOAD)) {
2467
2468 /* Try to acquire PID from bus service */
2469 log_debug("Trying to acquire PID from D-Bus name...");
2470
2471 bus_query_pid(u->meta.manager, name);
2472 }
2473}
2474
2475static void service_bus_query_pid_done(
2476 Unit *u,
2477 const char *name,
2478 pid_t pid) {
2479
2480 Service *s = SERVICE(u);
2481
2482 assert(s);
2483 assert(name);
2484
2485 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2486
2487 if (s->main_pid <= 0 &&
2488 (s->state == SERVICE_START ||
2489 s->state == SERVICE_START_POST ||
2490 s->state == SERVICE_RUNNING ||
2491 s->state == SERVICE_RELOAD))
5925dd3c 2492 service_set_main_pid(s, pid);
05e343b7
LP		 2493}
2494
4f2d528d
LP		 2495int service_set_socket_fd(Service *s, int fd) {
2496 assert(s);
2497 assert(fd >= 0);
2498
2499 /* This is called by the socket code when instantiating a new
2500 * service for a stream socket and the socket needs to be
2501 * configured. */
2502
2503 if (UNIT(s)->meta.load_state != UNIT_LOADED)
2504 return -EINVAL;
2505
2506 if (s->socket_fd >= 0)
2507 return -EBUSY;
2508
2509 if (s->state != SERVICE_DEAD)
2510 return -EAGAIN;
2511
2512 s->socket_fd = fd;
701cc384 2513 s->got_socket_fd = true;
4f2d528d
LP		 2514 return 0;
2515}
2516
94f04347
LP		 2517static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2518 [SERVICE_DEAD] = "dead",
2519 [SERVICE_START_PRE] = "start-pre",
2520 [SERVICE_START] = "start",
2521 [SERVICE_START_POST] = "start-post",
2522 [SERVICE_RUNNING] = "running",
80876c20 2523 [SERVICE_EXITED] = "exited",
94f04347
LP		 2524 [SERVICE_RELOAD] = "reload",
2525 [SERVICE_STOP] = "stop",
2526 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2527 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2528 [SERVICE_STOP_POST] = "stop-post",
2529 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2530 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
18c78fb1 2531 [SERVICE_MAINTENANCE] = "maintenance",
94f04347
LP		 2532 [SERVICE_AUTO_RESTART] = "auto-restart",
2533};
2534
2535DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2536
2537static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2538 [SERVICE_ONCE] = "once",
2539 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
40531a55 2540 [SERVICE_RESTART_ALWAYS] = "restart-always",
94f04347
LP		 2541};
2542
2543DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2544
2545static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
2546 [SERVICE_FORKING] = "forking",
2547 [SERVICE_SIMPLE] = "simple",
05e343b7 2548 [SERVICE_FINISH] = "finish",
8c47c732
LP		 2549 [SERVICE_DBUS] = "dbus",
2550 [SERVICE_NOTIFY] = "notify"
94f04347
LP		 2551};
2552
2553DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2554
e537352b 2555static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
94f04347
LP		 2556 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2557 [SERVICE_EXEC_START] = "ExecStart",
2558 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2559 [SERVICE_EXEC_RELOAD] = "ExecReload",
2560 [SERVICE_EXEC_STOP] = "ExecStop",
2561 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2562};
2563
2564DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2565
87f0e418 2566const UnitVTable service_vtable = {
5cb5a6ff
LP		 2567 .suffix = ".service",
2568
034c6ed7
LP		 2569 .init = service_init,
2570 .done = service_done,
a16e1123
LP		 2571 .load = service_load,
2572
2573 .coldplug = service_coldplug,
034c6ed7 2574
5cb5a6ff
LP		 2575 .dump = service_dump,
2576
2577 .start = service_start,
2578 .stop = service_stop,
2579 .reload = service_reload,
2580
034c6ed7
LP		 2581 .can_reload = service_can_reload,
2582
a16e1123
LP		 2583 .serialize = service_serialize,
2584 .deserialize_item = service_deserialize_item,
2585
5cb5a6ff 2586 .active_state = service_active_state,
10a94420 2587 .sub_state_to_string = service_sub_state_to_string,
5cb5a6ff 2588
701cc384
LP		 2589 .check_gc = service_check_gc,
2590 .check_snapshot = service_check_snapshot,
2591
034c6ed7
LP		 2592 .sigchld_event = service_sigchld_event,
2593 .timer_event = service_timer_event,
2c4104f0 2594
8e274523 2595 .cgroup_notify_empty = service_cgroup_notify_event,
8c47c732 2596 .notify_message = service_notify_message,
8e274523 2597
05e343b7
LP		 2598 .bus_name_owner_change = service_bus_name_owner_change,
2599 .bus_query_pid_done = service_bus_query_pid_done,
2600
4139c1b2
LP		 2601 .bus_message_handler = bus_service_message_handler,
2602
2c4104f0 2603 .enumerate = service_enumerate
5cb5a6ff 2604};
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