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timer: implement calendar time events
[thirdparty/systemd.git] / src / core / service.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
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 Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
22 #include <errno.h>
23 #include <signal.h>
24 #include <dirent.h>
25 #include <unistd.h>
26 #include <sys/reboot.h>
27
28 #include "manager.h"
29 #include "unit.h"
30 #include "service.h"
31 #include "load-fragment.h"
32 #include "load-dropin.h"
33 #include "log.h"
34 #include "strv.h"
35 #include "unit-name.h"
36 #include "unit-printf.h"
37 #include "dbus-service.h"
38 #include "special.h"
39 #include "bus-errors.h"
40 #include "exit-status.h"
41 #include "def.h"
42 #include "path-util.h"
43 #include "util.h"
44 #include "utf8.h"
45
46 #ifdef HAVE_SYSV_COMPAT
47
48 #define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE)
49
50 typedef enum RunlevelType {
51 RUNLEVEL_UP,
52 RUNLEVEL_DOWN
53 } RunlevelType;
54
55 static const struct {
56 const char *path;
57 const char *target;
58 const RunlevelType type;
59 } rcnd_table[] = {
60 /* Standard SysV runlevels for start-up */
61 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
62 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
63 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
64 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
65 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
66
67 /* Standard SysV runlevels for shutdown */
68 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
69 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
70
71 /* Note that the order here matters, as we read the
72 directories in this order, and we want to make sure that
73 sysv_start_priority is known when we first load the
74 unit. And that value we only know from S links. Hence
75 UP must be read before DOWN */
76 };
77
78 #define RUNLEVELS_UP "12345"
79 #endif
80
81 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
82 [SERVICE_DEAD] = UNIT_INACTIVE,
83 [SERVICE_START_PRE] = UNIT_ACTIVATING,
84 [SERVICE_START] = UNIT_ACTIVATING,
85 [SERVICE_START_POST] = UNIT_ACTIVATING,
86 [SERVICE_RUNNING] = UNIT_ACTIVE,
87 [SERVICE_EXITED] = UNIT_ACTIVE,
88 [SERVICE_RELOAD] = UNIT_RELOADING,
89 [SERVICE_STOP] = UNIT_DEACTIVATING,
90 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
91 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
92 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
93 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
94 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
95 [SERVICE_FAILED] = UNIT_FAILED,
96 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
97 };
98
99 /* For Type=idle we never want to delay any other jobs, hence we
100 * consider idle jobs active as soon as we start working on them */
101 static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = {
102 [SERVICE_DEAD] = UNIT_INACTIVE,
103 [SERVICE_START_PRE] = UNIT_ACTIVE,
104 [SERVICE_START] = UNIT_ACTIVE,
105 [SERVICE_START_POST] = UNIT_ACTIVE,
106 [SERVICE_RUNNING] = UNIT_ACTIVE,
107 [SERVICE_EXITED] = UNIT_ACTIVE,
108 [SERVICE_RELOAD] = UNIT_RELOADING,
109 [SERVICE_STOP] = UNIT_DEACTIVATING,
110 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
111 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
112 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
113 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
114 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
115 [SERVICE_FAILED] = UNIT_FAILED,
116 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
117 };
118
119 static void service_init(Unit *u) {
120 Service *s = SERVICE(u);
121
122 assert(u);
123 assert(u->load_state == UNIT_STUB);
124
125 s->timeout_start_usec = DEFAULT_TIMEOUT_USEC;
126 s->timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
127 s->restart_usec = DEFAULT_RESTART_USEC;
128 s->type = _SERVICE_TYPE_INVALID;
129
130 watch_init(&s->watchdog_watch);
131 watch_init(&s->timer_watch);
132
133 #ifdef HAVE_SYSV_COMPAT
134 s->sysv_start_priority = -1;
135 s->sysv_start_priority_from_rcnd = -1;
136 #endif
137 s->socket_fd = -1;
138 s->guess_main_pid = true;
139
140 exec_context_init(&s->exec_context);
141 kill_context_init(&s->kill_context);
142
143 RATELIMIT_INIT(s->start_limit, 10*USEC_PER_SEC, 5);
144
145 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
146 }
147
148 static void service_unwatch_control_pid(Service *s) {
149 assert(s);
150
151 if (s->control_pid <= 0)
152 return;
153
154 unit_unwatch_pid(UNIT(s), s->control_pid);
155 s->control_pid = 0;
156 }
157
158 static void service_unwatch_main_pid(Service *s) {
159 assert(s);
160
161 if (s->main_pid <= 0)
162 return;
163
164 unit_unwatch_pid(UNIT(s), s->main_pid);
165 s->main_pid = 0;
166 }
167
168 static void service_unwatch_pid_file(Service *s) {
169 if (!s->pid_file_pathspec)
170 return;
171
172 log_debug("Stopping watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
173 path_spec_unwatch(s->pid_file_pathspec, UNIT(s));
174 path_spec_done(s->pid_file_pathspec);
175 free(s->pid_file_pathspec);
176 s->pid_file_pathspec = NULL;
177 }
178
179 static int service_set_main_pid(Service *s, pid_t pid) {
180 pid_t ppid;
181
182 assert(s);
183
184 if (pid <= 1)
185 return -EINVAL;
186
187 if (pid == getpid())
188 return -EINVAL;
189
190 s->main_pid = pid;
191 s->main_pid_known = true;
192
193 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
194 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
195 UNIT(s)->id, (unsigned long) pid);
196
197 s->main_pid_alien = true;
198 } else
199 s->main_pid_alien = false;
200
201 exec_status_start(&s->main_exec_status, pid);
202
203 return 0;
204 }
205
206 static void service_close_socket_fd(Service *s) {
207 assert(s);
208
209 if (s->socket_fd < 0)
210 return;
211
212 close_nointr_nofail(s->socket_fd);
213 s->socket_fd = -1;
214 }
215
216 static void service_connection_unref(Service *s) {
217 assert(s);
218
219 if (!UNIT_DEREF(s->accept_socket))
220 return;
221
222 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
223 unit_ref_unset(&s->accept_socket);
224 }
225
226 static void service_stop_watchdog(Service *s) {
227 assert(s);
228
229 unit_unwatch_timer(UNIT(s), &s->watchdog_watch);
230 s->watchdog_timestamp.realtime = 0;
231 s->watchdog_timestamp.monotonic = 0;
232 }
233
234 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart);
235
236 static void service_handle_watchdog(Service *s) {
237 usec_t offset;
238 int r;
239
240 assert(s);
241
242 if (s->watchdog_usec == 0)
243 return;
244
245 offset = now(CLOCK_MONOTONIC) - s->watchdog_timestamp.monotonic;
246 if (offset >= s->watchdog_usec) {
247 log_error("%s watchdog timeout!", UNIT(s)->id);
248 service_enter_dead(s, SERVICE_FAILURE_WATCHDOG, true);
249 return;
250 }
251
252 r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->watchdog_usec - offset, &s->watchdog_watch);
253 if (r < 0)
254 log_warning("%s failed to install watchdog timer: %s", UNIT(s)->id, strerror(-r));
255 }
256
257 static void service_reset_watchdog(Service *s) {
258 assert(s);
259
260 dual_timestamp_get(&s->watchdog_timestamp);
261 service_handle_watchdog(s);
262 }
263
264 static void service_done(Unit *u) {
265 Service *s = SERVICE(u);
266
267 assert(s);
268
269 free(s->pid_file);
270 s->pid_file = NULL;
271
272 #ifdef HAVE_SYSV_COMPAT
273 free(s->sysv_runlevels);
274 s->sysv_runlevels = NULL;
275 #endif
276
277 free(s->status_text);
278 s->status_text = NULL;
279
280 exec_context_done(&s->exec_context);
281 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
282 s->control_command = NULL;
283 s->main_command = NULL;
284
285 set_free(s->restart_ignore_status.code);
286 s->restart_ignore_status.code = NULL;
287 set_free(s->restart_ignore_status.signal);
288 s->restart_ignore_status.signal = NULL;
289
290 set_free(s->success_status.code);
291 s->success_status.code = NULL;
292 set_free(s->success_status.signal);
293 s->success_status.signal = NULL;
294
295 /* This will leak a process, but at least no memory or any of
296 * our resources */
297 service_unwatch_main_pid(s);
298 service_unwatch_control_pid(s);
299 service_unwatch_pid_file(s);
300
301 if (s->bus_name) {
302 unit_unwatch_bus_name(u, s->bus_name);
303 free(s->bus_name);
304 s->bus_name = NULL;
305 }
306
307 service_close_socket_fd(s);
308 service_connection_unref(s);
309
310 unit_ref_unset(&s->accept_socket);
311
312 service_stop_watchdog(s);
313
314 unit_unwatch_timer(u, &s->timer_watch);
315 }
316
317 #ifdef HAVE_SYSV_COMPAT
318 static char *sysv_translate_name(const char *name) {
319 char *r;
320
321 if (!(r = new(char, strlen(name) + sizeof(".service"))))
322 return NULL;
323
324 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
325 if (endswith(name, ".sh"))
326 /* Drop Debian-style .sh suffix */
327 strcpy(stpcpy(r, name) - 3, ".service");
328 #endif
329 #ifdef TARGET_FRUGALWARE
330 if (startswith(name, "rc."))
331 /* Drop Frugalware-style rc. prefix */
332 strcpy(stpcpy(r, name + 3), ".service");
333 #endif
334 else
335 /* Normal init scripts */
336 strcpy(stpcpy(r, name), ".service");
337
338 return r;
339 }
340
341 static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
342
343 /* We silently ignore the $ prefix here. According to the LSB
344 * spec it simply indicates whether something is a
345 * standardized name or a distribution-specific one. Since we
346 * just follow what already exists and do not introduce new
347 * uses or names we don't care who introduced a new name. */
348
349 static const char * const table[] = {
350 /* LSB defined facilities */
351 "local_fs", SPECIAL_LOCAL_FS_TARGET,
352 #if defined(TARGET_MANDRIVA) || defined(TARGET_MAGEIA)
353 #else
354 /* Due to unfortunate name selection in Mandriva,
355 * $network is provided by network-up which is ordered
356 * after network which actually starts interfaces.
357 * To break the loop, just ignore it */
358 "network", SPECIAL_NETWORK_TARGET,
359 #endif
360 "named", SPECIAL_NSS_LOOKUP_TARGET,
361 "portmap", SPECIAL_RPCBIND_TARGET,
362 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
363 "syslog", SPECIAL_SYSLOG_TARGET,
364 "time", SPECIAL_TIME_SYNC_TARGET,
365
366 /* common extensions */
367 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
368 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
369 "null", NULL,
370
371 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
372 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
373 #endif
374
375 #ifdef TARGET_SUSE
376 "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
377 #endif
378 };
379
380 unsigned i;
381 char *r;
382 const char *n;
383
384 assert(name);
385 assert(_r);
386
387 n = *name == '$' ? name + 1 : name;
388
389 for (i = 0; i < ELEMENTSOF(table); i += 2) {
390
391 if (!streq(table[i], n))
392 continue;
393
394 if (!table[i+1])
395 return 0;
396
397 if (!(r = strdup(table[i+1])))
398 return -ENOMEM;
399
400 goto finish;
401 }
402
403 /* If we don't know this name, fallback heuristics to figure
404 * out whether something is a target or a service alias. */
405
406 if (*name == '$') {
407 if (!unit_prefix_is_valid(n))
408 return -EINVAL;
409
410 /* Facilities starting with $ are most likely targets */
411 r = unit_name_build(n, NULL, ".target");
412 } else if (filename && streq(name, filename))
413 /* Names equaling the file name of the services are redundant */
414 return 0;
415 else
416 /* Everything else we assume to be normal service names */
417 r = sysv_translate_name(n);
418
419 if (!r)
420 return -ENOMEM;
421
422 finish:
423 *_r = r;
424
425 return 1;
426 }
427
428 static int sysv_fix_order(Service *s) {
429 Unit *other;
430 int r;
431
432 assert(s);
433
434 if (s->sysv_start_priority < 0)
435 return 0;
436
437 /* For each pair of services where at least one lacks a LSB
438 * header, we use the start priority value to order things. */
439
440 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
441 Service *t;
442 UnitDependency d;
443 bool special_s, special_t;
444
445 t = SERVICE(other);
446
447 if (s == t)
448 continue;
449
450 if (UNIT(t)->load_state != UNIT_LOADED)
451 continue;
452
453 if (t->sysv_start_priority < 0)
454 continue;
455
456 /* If both units have modern headers we don't care
457 * about the priorities */
458 if ((UNIT(s)->fragment_path || s->sysv_has_lsb) &&
459 (UNIT(t)->fragment_path || t->sysv_has_lsb))
460 continue;
461
462 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
463 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
464
465 if (special_t && !special_s)
466 d = UNIT_AFTER;
467 else if (special_s && !special_t)
468 d = UNIT_BEFORE;
469 else if (t->sysv_start_priority < s->sysv_start_priority)
470 d = UNIT_AFTER;
471 else if (t->sysv_start_priority > s->sysv_start_priority)
472 d = UNIT_BEFORE;
473 else
474 continue;
475
476 /* FIXME: Maybe we should compare the name here lexicographically? */
477
478 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
479 return r;
480 }
481
482 return 0;
483 }
484
485 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
486 ExecCommand *c;
487
488 if (!(c = new0(ExecCommand, 1)))
489 return NULL;
490
491 if (!(c->path = strdup(path))) {
492 free(c);
493 return NULL;
494 }
495
496 if (!(c->argv = strv_new(path, arg1, NULL))) {
497 free(c->path);
498 free(c);
499 return NULL;
500 }
501
502 return c;
503 }
504
505 static int sysv_exec_commands(Service *s, const bool supports_reload) {
506 ExecCommand *c;
507
508 assert(s);
509 assert(s->is_sysv);
510 assert(UNIT(s)->source_path);
511
512 c = exec_command_new(UNIT(s)->source_path, "start");
513 if (!c)
514 return -ENOMEM;
515 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
516
517 c = exec_command_new(UNIT(s)->source_path, "stop");
518 if (!c)
519 return -ENOMEM;
520 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
521
522 if (supports_reload) {
523 c = exec_command_new(UNIT(s)->source_path, "reload");
524 if (!c)
525 return -ENOMEM;
526 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
527 }
528
529 return 0;
530 }
531
532 static bool usage_contains_reload(const char *line) {
533 return (strcasestr(line, "{reload|") ||
534 strcasestr(line, "{reload}") ||
535 strcasestr(line, "{reload\"") ||
536 strcasestr(line, "|reload|") ||
537 strcasestr(line, "|reload}") ||
538 strcasestr(line, "|reload\""));
539 }
540
541 static int service_load_sysv_path(Service *s, const char *path) {
542 FILE *f;
543 Unit *u;
544 unsigned line = 0;
545 int r;
546 enum {
547 NORMAL,
548 DESCRIPTION,
549 LSB,
550 LSB_DESCRIPTION,
551 USAGE_CONTINUATION
552 } state = NORMAL;
553 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
554 struct stat st;
555 bool supports_reload = false;
556
557 assert(s);
558 assert(path);
559
560 u = UNIT(s);
561
562 f = fopen(path, "re");
563 if (!f) {
564 r = errno == ENOENT ? 0 : -errno;
565 goto finish;
566 }
567
568 if (fstat(fileno(f), &st) < 0) {
569 r = -errno;
570 goto finish;
571 }
572
573 free(u->source_path);
574 u->source_path = strdup(path);
575 if (!u->source_path) {
576 r = -ENOMEM;
577 goto finish;
578 }
579 u->source_mtime = timespec_load(&st.st_mtim);
580
581 if (null_or_empty(&st)) {
582 u->load_state = UNIT_MASKED;
583 r = 0;
584 goto finish;
585 }
586
587 s->is_sysv = true;
588
589 while (!feof(f)) {
590 char l[LINE_MAX], *t;
591
592 if (!fgets(l, sizeof(l), f)) {
593 if (feof(f))
594 break;
595
596 r = -errno;
597 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
598 goto finish;
599 }
600
601 line++;
602
603 t = strstrip(l);
604 if (*t != '#') {
605 /* Try to figure out whether this init script supports
606 * the reload operation. This heuristic looks for
607 * "Usage" lines which include the reload option. */
608 if ( state == USAGE_CONTINUATION ||
609 (state == NORMAL && strcasestr(t, "usage"))) {
610 if (usage_contains_reload(t)) {
611 supports_reload = true;
612 state = NORMAL;
613 } else if (t[strlen(t)-1] == '\\')
614 state = USAGE_CONTINUATION;
615 else
616 state = NORMAL;
617 }
618
619 continue;
620 }
621
622 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
623 state = LSB;
624 s->sysv_has_lsb = true;
625 continue;
626 }
627
628 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
629 state = NORMAL;
630 continue;
631 }
632
633 t++;
634 t += strspn(t, WHITESPACE);
635
636 if (state == NORMAL) {
637
638 /* Try to parse Red Hat style chkconfig headers */
639
640 if (startswith_no_case(t, "chkconfig:")) {
641 int start_priority;
642 char runlevels[16], *k;
643
644 state = NORMAL;
645
646 if (sscanf(t+10, "%15s %i %*i",
647 runlevels,
648 &start_priority) != 2) {
649
650 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
651 continue;
652 }
653
654 /* A start priority gathered from the
655 * symlink farms is preferred over the
656 * data from the LSB header. */
657 if (start_priority < 0 || start_priority > 99)
658 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
659 else
660 s->sysv_start_priority = start_priority;
661
662 char_array_0(runlevels);
663 k = delete_chars(runlevels, WHITESPACE "-");
664
665 if (k[0]) {
666 char *d;
667
668 if (!(d = strdup(k))) {
669 r = -ENOMEM;
670 goto finish;
671 }
672
673 free(s->sysv_runlevels);
674 s->sysv_runlevels = d;
675 }
676
677 } else if (startswith_no_case(t, "description:")) {
678
679 size_t k = strlen(t);
680 char *d;
681 const char *j;
682
683 if (t[k-1] == '\\') {
684 state = DESCRIPTION;
685 t[k-1] = 0;
686 }
687
688 if ((j = strstrip(t+12)) && *j) {
689 if (!(d = strdup(j))) {
690 r = -ENOMEM;
691 goto finish;
692 }
693 } else
694 d = NULL;
695
696 free(chkconfig_description);
697 chkconfig_description = d;
698
699 } else if (startswith_no_case(t, "pidfile:")) {
700
701 char *fn;
702
703 state = NORMAL;
704
705 fn = strstrip(t+8);
706 if (!path_is_absolute(fn)) {
707 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
708 continue;
709 }
710
711 if (!(fn = strdup(fn))) {
712 r = -ENOMEM;
713 goto finish;
714 }
715
716 free(s->pid_file);
717 s->pid_file = fn;
718 }
719
720 } else if (state == DESCRIPTION) {
721
722 /* Try to parse Red Hat style description
723 * continuation */
724
725 size_t k = strlen(t);
726 char *j;
727
728 if (t[k-1] == '\\')
729 t[k-1] = 0;
730 else
731 state = NORMAL;
732
733 if ((j = strstrip(t)) && *j) {
734 char *d = NULL;
735
736 if (chkconfig_description)
737 d = strjoin(chkconfig_description, " ", j, NULL);
738 else
739 d = strdup(j);
740
741 if (!d) {
742 r = -ENOMEM;
743 goto finish;
744 }
745
746 free(chkconfig_description);
747 chkconfig_description = d;
748 }
749
750 } else if (state == LSB || state == LSB_DESCRIPTION) {
751
752 if (startswith_no_case(t, "Provides:")) {
753 char *i, *w;
754 size_t z;
755
756 state = LSB;
757
758 FOREACH_WORD_QUOTED(w, z, t+9, i) {
759 char *n, *m;
760
761 if (!(n = strndup(w, z))) {
762 r = -ENOMEM;
763 goto finish;
764 }
765
766 r = sysv_translate_facility(n, path_get_file_name(path), &m);
767 free(n);
768
769 if (r < 0)
770 goto finish;
771
772 if (r == 0)
773 continue;
774
775 if (unit_name_to_type(m) == UNIT_SERVICE)
776 r = unit_add_name(u, m);
777 else
778 /* NB: SysV targets
779 * which are provided
780 * by a service are
781 * pulled in by the
782 * services, as an
783 * indication that the
784 * generic service is
785 * now available. This
786 * is strictly
787 * one-way. The
788 * targets do NOT pull
789 * in the SysV
790 * services! */
791 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
792
793 if (r < 0)
794 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
795
796 free(m);
797 }
798
799 } else if (startswith_no_case(t, "Required-Start:") ||
800 startswith_no_case(t, "Should-Start:") ||
801 startswith_no_case(t, "X-Start-Before:") ||
802 startswith_no_case(t, "X-Start-After:")) {
803 char *i, *w;
804 size_t z;
805
806 state = LSB;
807
808 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
809 char *n, *m;
810
811 if (!(n = strndup(w, z))) {
812 r = -ENOMEM;
813 goto finish;
814 }
815
816 r = sysv_translate_facility(n, path_get_file_name(path), &m);
817
818 if (r < 0) {
819 log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r));
820 free(n);
821 continue;
822 }
823
824 free(n);
825
826 if (r == 0)
827 continue;
828
829 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
830
831 if (r < 0)
832 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
833
834 free(m);
835 }
836 } else if (startswith_no_case(t, "Default-Start:")) {
837 char *k, *d;
838
839 state = LSB;
840
841 k = delete_chars(t+14, WHITESPACE "-");
842
843 if (k[0] != 0) {
844 if (!(d = strdup(k))) {
845 r = -ENOMEM;
846 goto finish;
847 }
848
849 free(s->sysv_runlevels);
850 s->sysv_runlevels = d;
851 }
852
853 } else if (startswith_no_case(t, "Description:")) {
854 char *d, *j;
855
856 state = LSB_DESCRIPTION;
857
858 if ((j = strstrip(t+12)) && *j) {
859 if (!(d = strdup(j))) {
860 r = -ENOMEM;
861 goto finish;
862 }
863 } else
864 d = NULL;
865
866 free(long_description);
867 long_description = d;
868
869 } else if (startswith_no_case(t, "Short-Description:")) {
870 char *d, *j;
871
872 state = LSB;
873
874 if ((j = strstrip(t+18)) && *j) {
875 if (!(d = strdup(j))) {
876 r = -ENOMEM;
877 goto finish;
878 }
879 } else
880 d = NULL;
881
882 free(short_description);
883 short_description = d;
884
885 } else if (state == LSB_DESCRIPTION) {
886
887 if (startswith(l, "#\t") || startswith(l, "# ")) {
888 char *j;
889
890 if ((j = strstrip(t)) && *j) {
891 char *d = NULL;
892
893 if (long_description)
894 d = strjoin(long_description, " ", t, NULL);
895 else
896 d = strdup(j);
897
898 if (!d) {
899 r = -ENOMEM;
900 goto finish;
901 }
902
903 free(long_description);
904 long_description = d;
905 }
906
907 } else
908 state = LSB;
909 }
910 }
911 }
912
913 if ((r = sysv_exec_commands(s, supports_reload)) < 0)
914 goto finish;
915
916 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
917 /* If there a runlevels configured for this service
918 * but none of the standard ones, then we assume this
919 * is some special kind of service (which might be
920 * needed for early boot) and don't create any links
921 * to it. */
922
923 UNIT(s)->default_dependencies = false;
924
925 /* Don't timeout special services during boot (like fsck) */
926 s->timeout_start_usec = 0;
927 s->timeout_stop_usec = 0;
928 } else {
929 s->timeout_start_usec = DEFAULT_SYSV_TIMEOUT_USEC;
930 s->timeout_stop_usec = DEFAULT_SYSV_TIMEOUT_USEC;
931 }
932
933 /* Special setting for all SysV services */
934 s->type = SERVICE_FORKING;
935 s->remain_after_exit = !s->pid_file;
936 s->guess_main_pid = false;
937 s->restart = SERVICE_RESTART_NO;
938 s->exec_context.ignore_sigpipe = false;
939 s->kill_context.kill_mode = KILL_PROCESS;
940
941 /* We use the long description only if
942 * no short description is set. */
943
944 if (short_description)
945 description = short_description;
946 else if (chkconfig_description)
947 description = chkconfig_description;
948 else if (long_description)
949 description = long_description;
950 else
951 description = NULL;
952
953 if (description) {
954 char *d;
955
956 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
957 r = -ENOMEM;
958 goto finish;
959 }
960
961 u->description = d;
962 }
963
964 /* The priority that has been set in /etc/rcN.d/ hierarchies
965 * takes precedence over what is stored as default in the LSB
966 * header */
967 if (s->sysv_start_priority_from_rcnd >= 0)
968 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
969
970 u->load_state = UNIT_LOADED;
971 r = 0;
972
973 finish:
974
975 if (f)
976 fclose(f);
977
978 free(short_description);
979 free(long_description);
980 free(chkconfig_description);
981
982 return r;
983 }
984
985 static int service_load_sysv_name(Service *s, const char *name) {
986 char **p;
987
988 assert(s);
989 assert(name);
990
991 /* For SysV services we strip the rc.* and *.sh
992 * prefixes/suffixes. */
993 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
994 if (endswith(name, ".sh.service"))
995 return -ENOENT;
996 #endif
997
998 #ifdef TARGET_FRUGALWARE
999 if (startswith(name, "rc."))
1000 return -ENOENT;
1001 #endif
1002
1003 STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
1004 char *path;
1005 int r;
1006
1007 path = strjoin(*p, "/", name, NULL);
1008 if (!path)
1009 return -ENOMEM;
1010
1011 assert(endswith(path, ".service"));
1012 path[strlen(path)-8] = 0;
1013
1014 r = service_load_sysv_path(s, path);
1015
1016 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
1017 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1018 /* Try Debian style *.sh source'able init scripts */
1019 strcat(path, ".sh");
1020 r = service_load_sysv_path(s, path);
1021 }
1022 #endif
1023 free(path);
1024
1025 #ifdef TARGET_FRUGALWARE
1026 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1027 /* Try Frugalware style rc.* init scripts */
1028
1029 path = strjoin(*p, "/rc.", name, NULL);
1030 if (!path)
1031 return -ENOMEM;
1032
1033 /* Drop .service suffix */
1034 path[strlen(path)-8] = 0;
1035 r = service_load_sysv_path(s, path);
1036 free(path);
1037 }
1038 #endif
1039
1040 if (r < 0)
1041 return r;
1042
1043 if ((UNIT(s)->load_state != UNIT_STUB))
1044 break;
1045 }
1046
1047 return 0;
1048 }
1049
1050 static int service_load_sysv(Service *s) {
1051 const char *t;
1052 Iterator i;
1053 int r;
1054
1055 assert(s);
1056
1057 /* Load service data from SysV init scripts, preferably with
1058 * LSB headers ... */
1059
1060 if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
1061 return 0;
1062
1063 if ((t = UNIT(s)->id))
1064 if ((r = service_load_sysv_name(s, t)) < 0)
1065 return r;
1066
1067 if (UNIT(s)->load_state == UNIT_STUB)
1068 SET_FOREACH(t, UNIT(s)->names, i) {
1069 if (t == UNIT(s)->id)
1070 continue;
1071
1072 if ((r = service_load_sysv_name(s, t)) < 0)
1073 return r;
1074
1075 if (UNIT(s)->load_state != UNIT_STUB)
1076 break;
1077 }
1078
1079 return 0;
1080 }
1081 #endif
1082
1083 static int fsck_fix_order(Service *s) {
1084 Unit *other;
1085 int r;
1086
1087 assert(s);
1088
1089 if (s->fsck_passno <= 0)
1090 return 0;
1091
1092 /* For each pair of services where both have an fsck priority
1093 * we order things based on it. */
1094
1095 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
1096 Service *t;
1097 UnitDependency d;
1098
1099 t = SERVICE(other);
1100
1101 if (s == t)
1102 continue;
1103
1104 if (UNIT(t)->load_state != UNIT_LOADED)
1105 continue;
1106
1107 if (t->fsck_passno <= 0)
1108 continue;
1109
1110 if (t->fsck_passno < s->fsck_passno)
1111 d = UNIT_AFTER;
1112 else if (t->fsck_passno > s->fsck_passno)
1113 d = UNIT_BEFORE;
1114 else
1115 continue;
1116
1117 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
1118 return r;
1119 }
1120
1121 return 0;
1122 }
1123
1124 static int service_verify(Service *s) {
1125 assert(s);
1126
1127 if (UNIT(s)->load_state != UNIT_LOADED)
1128 return 0;
1129
1130 if (!s->exec_command[SERVICE_EXEC_START]) {
1131 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
1132 return -EINVAL;
1133 }
1134
1135 if (s->type != SERVICE_ONESHOT &&
1136 s->exec_command[SERVICE_EXEC_START]->command_next) {
1137 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1138 return -EINVAL;
1139 }
1140
1141 if (s->type == SERVICE_DBUS && !s->bus_name) {
1142 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id);
1143 return -EINVAL;
1144 }
1145
1146 if (s->bus_name && s->type != SERVICE_DBUS)
1147 log_warning("%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id);
1148
1149 if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) {
1150 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
1151 return -EINVAL;
1152 }
1153
1154 return 0;
1155 }
1156
1157 static int service_add_default_dependencies(Service *s) {
1158 int r;
1159
1160 assert(s);
1161
1162 /* Add a number of automatic dependencies useful for the
1163 * majority of services. */
1164
1165 /* First, pull in base system */
1166 if (UNIT(s)->manager->running_as == SYSTEMD_SYSTEM) {
1167
1168 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1169 return r;
1170
1171 } else if (UNIT(s)->manager->running_as == SYSTEMD_USER) {
1172
1173 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1174 return r;
1175 }
1176
1177 /* Second, activate normal shutdown */
1178 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1179 }
1180
1181 static void service_fix_output(Service *s) {
1182 assert(s);
1183
1184 /* If nothing has been explicitly configured, patch default
1185 * output in. If input is socket/tty we avoid this however,
1186 * since in that case we want output to default to the same
1187 * place as we read input from. */
1188
1189 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1190 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1191 s->exec_context.std_input == EXEC_INPUT_NULL)
1192 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
1193
1194 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1195 s->exec_context.std_input == EXEC_INPUT_NULL)
1196 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
1197 }
1198
1199 static int service_load(Unit *u) {
1200 int r;
1201 Service *s = SERVICE(u);
1202
1203 assert(s);
1204
1205 /* Load a .service file */
1206 if ((r = unit_load_fragment(u)) < 0)
1207 return r;
1208
1209 #ifdef HAVE_SYSV_COMPAT
1210 /* Load a classic init script as a fallback, if we couldn't find anything */
1211 if (u->load_state == UNIT_STUB)
1212 if ((r = service_load_sysv(s)) < 0)
1213 return r;
1214 #endif
1215
1216 /* Still nothing found? Then let's give up */
1217 if (u->load_state == UNIT_STUB)
1218 return -ENOENT;
1219
1220 /* We were able to load something, then let's add in the
1221 * dropin directories. */
1222 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1223 return r;
1224
1225 /* This is a new unit? Then let's add in some extras */
1226 if (u->load_state == UNIT_LOADED) {
1227 if (s->type == _SERVICE_TYPE_INVALID)
1228 s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE;
1229
1230 /* Oneshot services have disabled start timeout by default */
1231 if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined)
1232 s->timeout_start_usec = 0;
1233
1234 service_fix_output(s);
1235
1236 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1237 return r;
1238
1239 if ((r = unit_add_default_cgroups(u)) < 0)
1240 return r;
1241
1242 #ifdef HAVE_SYSV_COMPAT
1243 if ((r = sysv_fix_order(s)) < 0)
1244 return r;
1245 #endif
1246
1247 if ((r = fsck_fix_order(s)) < 0)
1248 return r;
1249
1250 if (s->bus_name)
1251 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1252 return r;
1253
1254 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1255 s->notify_access = NOTIFY_MAIN;
1256
1257 if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
1258 s->notify_access = NOTIFY_MAIN;
1259
1260 if (s->type == SERVICE_DBUS || s->bus_name)
1261 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
1262 return r;
1263
1264 if (UNIT(s)->default_dependencies)
1265 if ((r = service_add_default_dependencies(s)) < 0)
1266 return r;
1267
1268 r = unit_exec_context_defaults(u, &s->exec_context);
1269 if (r < 0)
1270 return r;
1271 }
1272
1273 return service_verify(s);
1274 }
1275
1276 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1277
1278 ServiceExecCommand c;
1279 Service *s = SERVICE(u);
1280 const char *prefix2;
1281 char *p2;
1282
1283 assert(s);
1284
1285 p2 = strappend(prefix, "\t");
1286 prefix2 = p2 ? p2 : prefix;
1287
1288 fprintf(f,
1289 "%sService State: %s\n"
1290 "%sResult: %s\n"
1291 "%sReload Result: %s\n"
1292 "%sPermissionsStartOnly: %s\n"
1293 "%sRootDirectoryStartOnly: %s\n"
1294 "%sRemainAfterExit: %s\n"
1295 "%sGuessMainPID: %s\n"
1296 "%sType: %s\n"
1297 "%sRestart: %s\n"
1298 "%sNotifyAccess: %s\n",
1299 prefix, service_state_to_string(s->state),
1300 prefix, service_result_to_string(s->result),
1301 prefix, service_result_to_string(s->reload_result),
1302 prefix, yes_no(s->permissions_start_only),
1303 prefix, yes_no(s->root_directory_start_only),
1304 prefix, yes_no(s->remain_after_exit),
1305 prefix, yes_no(s->guess_main_pid),
1306 prefix, service_type_to_string(s->type),
1307 prefix, service_restart_to_string(s->restart),
1308 prefix, notify_access_to_string(s->notify_access));
1309
1310 if (s->control_pid > 0)
1311 fprintf(f,
1312 "%sControl PID: %lu\n",
1313 prefix, (unsigned long) s->control_pid);
1314
1315 if (s->main_pid > 0)
1316 fprintf(f,
1317 "%sMain PID: %lu\n"
1318 "%sMain PID Known: %s\n"
1319 "%sMain PID Alien: %s\n",
1320 prefix, (unsigned long) s->main_pid,
1321 prefix, yes_no(s->main_pid_known),
1322 prefix, yes_no(s->main_pid_alien));
1323
1324 if (s->pid_file)
1325 fprintf(f,
1326 "%sPIDFile: %s\n",
1327 prefix, s->pid_file);
1328
1329 if (s->bus_name)
1330 fprintf(f,
1331 "%sBusName: %s\n"
1332 "%sBus Name Good: %s\n",
1333 prefix, s->bus_name,
1334 prefix, yes_no(s->bus_name_good));
1335
1336 kill_context_dump(&s->kill_context, f, prefix);
1337 exec_context_dump(&s->exec_context, f, prefix);
1338
1339 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1340
1341 if (!s->exec_command[c])
1342 continue;
1343
1344 fprintf(f, "%s-> %s:\n",
1345 prefix, service_exec_command_to_string(c));
1346
1347 exec_command_dump_list(s->exec_command[c], f, prefix2);
1348 }
1349
1350 #ifdef HAVE_SYSV_COMPAT
1351 if (s->is_sysv)
1352 fprintf(f,
1353 "%sSysV Init Script has LSB Header: %s\n"
1354 "%sSysVEnabled: %s\n",
1355 prefix, yes_no(s->sysv_has_lsb),
1356 prefix, yes_no(s->sysv_enabled));
1357
1358 if (s->sysv_start_priority >= 0)
1359 fprintf(f,
1360 "%sSysVStartPriority: %i\n",
1361 prefix, s->sysv_start_priority);
1362
1363 if (s->sysv_runlevels)
1364 fprintf(f, "%sSysVRunLevels: %s\n",
1365 prefix, s->sysv_runlevels);
1366 #endif
1367
1368 if (s->fsck_passno > 0)
1369 fprintf(f,
1370 "%sFsckPassNo: %i\n",
1371 prefix, s->fsck_passno);
1372
1373 if (s->status_text)
1374 fprintf(f, "%sStatus Text: %s\n",
1375 prefix, s->status_text);
1376
1377 free(p2);
1378 }
1379
1380 static int service_load_pid_file(Service *s, bool may_warn) {
1381 char *k;
1382 int r;
1383 pid_t pid;
1384
1385 assert(s);
1386
1387 if (!s->pid_file)
1388 return -ENOENT;
1389
1390 if ((r = read_one_line_file(s->pid_file, &k)) < 0) {
1391 if (may_warn)
1392 log_info("PID file %s not readable (yet?) after %s.",
1393 s->pid_file, service_state_to_string(s->state));
1394 return r;
1395 }
1396
1397 r = parse_pid(k, &pid);
1398 free(k);
1399
1400 if (r < 0)
1401 return r;
1402
1403 if (kill(pid, 0) < 0 && errno != EPERM) {
1404 if (may_warn)
1405 log_info("PID %lu read from file %s does not exist.",
1406 (unsigned long) pid, s->pid_file);
1407 return -ESRCH;
1408 }
1409
1410 if (s->main_pid_known) {
1411 if (pid == s->main_pid)
1412 return 0;
1413
1414 log_debug("Main PID changing: %lu -> %lu",
1415 (unsigned long) s->main_pid, (unsigned long) pid);
1416 service_unwatch_main_pid(s);
1417 s->main_pid_known = false;
1418 } else
1419 log_debug("Main PID loaded: %lu", (unsigned long) pid);
1420
1421 if ((r = service_set_main_pid(s, pid)) < 0)
1422 return r;
1423
1424 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1425 /* FIXME: we need to do something here */
1426 return r;
1427
1428 return 0;
1429 }
1430
1431 static int service_search_main_pid(Service *s) {
1432 pid_t pid;
1433 int r;
1434
1435 assert(s);
1436
1437 /* If we know it anyway, don't ever fallback to unreliable
1438 * heuristics */
1439 if (s->main_pid_known)
1440 return 0;
1441
1442 if (!s->guess_main_pid)
1443 return 0;
1444
1445 assert(s->main_pid <= 0);
1446
1447 if ((pid = cgroup_bonding_search_main_pid_list(UNIT(s)->cgroup_bondings)) <= 0)
1448 return -ENOENT;
1449
1450 log_debug("Main PID guessed: %lu", (unsigned long) pid);
1451 if ((r = service_set_main_pid(s, pid)) < 0)
1452 return r;
1453
1454 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1455 /* FIXME: we need to do something here */
1456 return r;
1457
1458 return 0;
1459 }
1460
1461 static void service_notify_sockets_dead(Service *s, bool failed_permanent) {
1462 Iterator i;
1463 Unit *u;
1464
1465 assert(s);
1466
1467 /* Notifies all our sockets when we die */
1468
1469 if (s->socket_fd >= 0)
1470 return;
1471
1472 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i)
1473 if (u->type == UNIT_SOCKET)
1474 socket_notify_service_dead(SOCKET(u), failed_permanent);
1475
1476 return;
1477 }
1478
1479 static void service_set_state(Service *s, ServiceState state) {
1480 ServiceState old_state;
1481 const UnitActiveState *table;
1482 assert(s);
1483
1484 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1485
1486 old_state = s->state;
1487 s->state = state;
1488
1489 service_unwatch_pid_file(s);
1490
1491 if (state != SERVICE_START_PRE &&
1492 state != SERVICE_START &&
1493 state != SERVICE_START_POST &&
1494 state != SERVICE_RELOAD &&
1495 state != SERVICE_STOP &&
1496 state != SERVICE_STOP_SIGTERM &&
1497 state != SERVICE_STOP_SIGKILL &&
1498 state != SERVICE_STOP_POST &&
1499 state != SERVICE_FINAL_SIGTERM &&
1500 state != SERVICE_FINAL_SIGKILL &&
1501 state != SERVICE_AUTO_RESTART)
1502 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1503
1504 if (state != SERVICE_START &&
1505 state != SERVICE_START_POST &&
1506 state != SERVICE_RUNNING &&
1507 state != SERVICE_RELOAD &&
1508 state != SERVICE_STOP &&
1509 state != SERVICE_STOP_SIGTERM &&
1510 state != SERVICE_STOP_SIGKILL) {
1511 service_unwatch_main_pid(s);
1512 s->main_command = NULL;
1513 }
1514
1515 if (state != SERVICE_START_PRE &&
1516 state != SERVICE_START &&
1517 state != SERVICE_START_POST &&
1518 state != SERVICE_RELOAD &&
1519 state != SERVICE_STOP &&
1520 state != SERVICE_STOP_SIGTERM &&
1521 state != SERVICE_STOP_SIGKILL &&
1522 state != SERVICE_STOP_POST &&
1523 state != SERVICE_FINAL_SIGTERM &&
1524 state != SERVICE_FINAL_SIGKILL) {
1525 service_unwatch_control_pid(s);
1526 s->control_command = NULL;
1527 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1528 }
1529
1530 if (state == SERVICE_DEAD ||
1531 state == SERVICE_STOP ||
1532 state == SERVICE_STOP_SIGTERM ||
1533 state == SERVICE_STOP_SIGKILL ||
1534 state == SERVICE_STOP_POST ||
1535 state == SERVICE_FINAL_SIGTERM ||
1536 state == SERVICE_FINAL_SIGKILL ||
1537 state == SERVICE_FAILED ||
1538 state == SERVICE_AUTO_RESTART)
1539 service_notify_sockets_dead(s, false);
1540
1541 if (state != SERVICE_START_PRE &&
1542 state != SERVICE_START &&
1543 state != SERVICE_START_POST &&
1544 state != SERVICE_RUNNING &&
1545 state != SERVICE_RELOAD &&
1546 state != SERVICE_STOP &&
1547 state != SERVICE_STOP_SIGTERM &&
1548 state != SERVICE_STOP_SIGKILL &&
1549 state != SERVICE_STOP_POST &&
1550 state != SERVICE_FINAL_SIGTERM &&
1551 state != SERVICE_FINAL_SIGKILL &&
1552 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1553 service_close_socket_fd(s);
1554 service_connection_unref(s);
1555 }
1556
1557 if (state == SERVICE_STOP)
1558 service_stop_watchdog(s);
1559
1560 /* For the inactive states unit_notify() will trim the cgroup,
1561 * but for exit we have to do that ourselves... */
1562 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1563 cgroup_bonding_trim_list(UNIT(s)->cgroup_bondings, true);
1564
1565 if (old_state != state)
1566 log_struct(LOG_DEBUG,
1567 "UNIT=%s", UNIT(s)->id,
1568 "MESSAGE=%s changed %s -> %s", UNIT(s)->id,
1569 service_state_to_string(old_state),
1570 service_state_to_string(state),
1571 NULL);
1572
1573 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1574 s->reload_result = SERVICE_SUCCESS;
1575 }
1576
1577 static int service_coldplug(Unit *u) {
1578 Service *s = SERVICE(u);
1579 int r;
1580
1581 assert(s);
1582 assert(s->state == SERVICE_DEAD);
1583
1584 if (s->deserialized_state != s->state) {
1585
1586 if (s->deserialized_state == SERVICE_START_PRE ||
1587 s->deserialized_state == SERVICE_START ||
1588 s->deserialized_state == SERVICE_START_POST ||
1589 s->deserialized_state == SERVICE_RELOAD ||
1590 s->deserialized_state == SERVICE_STOP ||
1591 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1592 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1593 s->deserialized_state == SERVICE_STOP_POST ||
1594 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1595 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1596 s->deserialized_state == SERVICE_AUTO_RESTART) {
1597 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_start_usec > 0) {
1598 usec_t k;
1599
1600 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_start_usec;
1601
1602 r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, k, &s->timer_watch);
1603 if (r < 0)
1604 return r;
1605 }
1606 }
1607
1608 if ((s->deserialized_state == SERVICE_START &&
1609 (s->type == SERVICE_FORKING ||
1610 s->type == SERVICE_DBUS ||
1611 s->type == SERVICE_ONESHOT ||
1612 s->type == SERVICE_NOTIFY)) ||
1613 s->deserialized_state == SERVICE_START_POST ||
1614 s->deserialized_state == SERVICE_RUNNING ||
1615 s->deserialized_state == SERVICE_RELOAD ||
1616 s->deserialized_state == SERVICE_STOP ||
1617 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1618 s->deserialized_state == SERVICE_STOP_SIGKILL)
1619 if (s->main_pid > 0)
1620 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1621 return r;
1622
1623 if (s->deserialized_state == SERVICE_START_PRE ||
1624 s->deserialized_state == SERVICE_START ||
1625 s->deserialized_state == SERVICE_START_POST ||
1626 s->deserialized_state == SERVICE_RELOAD ||
1627 s->deserialized_state == SERVICE_STOP ||
1628 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1629 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1630 s->deserialized_state == SERVICE_STOP_POST ||
1631 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1632 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1633 if (s->control_pid > 0)
1634 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1635 return r;
1636
1637 if (s->deserialized_state == SERVICE_START_POST ||
1638 s->deserialized_state == SERVICE_RUNNING)
1639 service_handle_watchdog(s);
1640
1641 service_set_state(s, s->deserialized_state);
1642 }
1643 return 0;
1644 }
1645
1646 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1647 Iterator i;
1648 int r;
1649 int *rfds = NULL;
1650 unsigned rn_fds = 0;
1651 Unit *u;
1652
1653 assert(s);
1654 assert(fds);
1655 assert(n_fds);
1656
1657 if (s->socket_fd >= 0)
1658 return 0;
1659
1660 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1661 int *cfds;
1662 unsigned cn_fds;
1663 Socket *sock;
1664
1665 if (u->type != UNIT_SOCKET)
1666 continue;
1667
1668 sock = SOCKET(u);
1669
1670 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1671 goto fail;
1672
1673 if (!cfds)
1674 continue;
1675
1676 if (!rfds) {
1677 rfds = cfds;
1678 rn_fds = cn_fds;
1679 } else {
1680 int *t;
1681
1682 if (!(t = new(int, rn_fds+cn_fds))) {
1683 free(cfds);
1684 r = -ENOMEM;
1685 goto fail;
1686 }
1687
1688 memcpy(t, rfds, rn_fds * sizeof(int));
1689 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1690 free(rfds);
1691 free(cfds);
1692
1693 rfds = t;
1694 rn_fds = rn_fds+cn_fds;
1695 }
1696 }
1697
1698 *fds = rfds;
1699 *n_fds = rn_fds;
1700
1701 return 0;
1702
1703 fail:
1704 free(rfds);
1705
1706 return r;
1707 }
1708
1709 static int service_spawn(
1710 Service *s,
1711 ExecCommand *c,
1712 bool timeout,
1713 bool pass_fds,
1714 bool apply_permissions,
1715 bool apply_chroot,
1716 bool apply_tty_stdin,
1717 bool set_notify_socket,
1718 bool is_control,
1719 pid_t *_pid) {
1720
1721 pid_t pid;
1722 int r;
1723 int *fds = NULL, *fdsbuf = NULL;
1724 unsigned n_fds = 0, n_env = 0;
1725 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1726
1727 assert(s);
1728 assert(c);
1729 assert(_pid);
1730
1731 if (pass_fds ||
1732 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1733 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1734 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1735
1736 if (s->socket_fd >= 0) {
1737 fds = &s->socket_fd;
1738 n_fds = 1;
1739 } else {
1740 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1741 goto fail;
1742
1743 fds = fdsbuf;
1744 }
1745 }
1746
1747 if (timeout && s->timeout_start_usec) {
1748 r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->timeout_start_usec, &s->timer_watch);
1749 if (r < 0)
1750 goto fail;
1751 } else
1752 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1753
1754 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1755 r = -ENOMEM;
1756 goto fail;
1757 }
1758
1759 our_env = new0(char*, 5);
1760 if (!our_env) {
1761 r = -ENOMEM;
1762 goto fail;
1763 }
1764
1765 if (set_notify_socket)
1766 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1767 r = -ENOMEM;
1768 goto fail;
1769 }
1770
1771 if (s->main_pid > 0)
1772 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1773 r = -ENOMEM;
1774 goto fail;
1775 }
1776
1777 if (s->watchdog_usec > 0)
1778 if (asprintf(our_env + n_env++, "WATCHDOG_USEC=%llu", (unsigned long long) s->watchdog_usec) < 0) {
1779 r = -ENOMEM;
1780 goto fail;
1781 }
1782
1783 if (s->meta.manager->running_as != SYSTEMD_SYSTEM)
1784 if (asprintf(our_env + n_env++, "MANAGERPID=%lu", (unsigned long) getpid()) < 0) {
1785 r = -ENOMEM;
1786 goto fail;
1787 }
1788
1789 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
1790 if (!final_env) {
1791 r = -ENOMEM;
1792 goto fail;
1793 }
1794
1795 r = exec_spawn(c,
1796 argv,
1797 &s->exec_context,
1798 fds, n_fds,
1799 final_env,
1800 apply_permissions,
1801 apply_chroot,
1802 apply_tty_stdin,
1803 UNIT(s)->manager->confirm_spawn,
1804 UNIT(s)->cgroup_bondings,
1805 UNIT(s)->cgroup_attributes,
1806 is_control ? "control" : NULL,
1807 UNIT(s)->id,
1808 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1809 &pid);
1810
1811 if (r < 0)
1812 goto fail;
1813
1814 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1815 /* FIXME: we need to do something here */
1816 goto fail;
1817
1818 free(fdsbuf);
1819 strv_free(argv);
1820 strv_free(our_env);
1821 strv_free(final_env);
1822
1823 *_pid = pid;
1824
1825 return 0;
1826
1827 fail:
1828 free(fdsbuf);
1829 strv_free(argv);
1830 strv_free(our_env);
1831 strv_free(final_env);
1832
1833 if (timeout)
1834 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1835
1836 return r;
1837 }
1838
1839 static int main_pid_good(Service *s) {
1840 assert(s);
1841
1842 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1843 * don't know */
1844
1845 /* If we know the pid file, then lets just check if it is
1846 * still valid */
1847 if (s->main_pid_known) {
1848
1849 /* If it's an alien child let's check if it is still
1850 * alive ... */
1851 if (s->main_pid_alien)
1852 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1853
1854 /* .. otherwise assume we'll get a SIGCHLD for it,
1855 * which we really should wait for to collect exit
1856 * status and code */
1857 return s->main_pid > 0;
1858 }
1859
1860 /* We don't know the pid */
1861 return -EAGAIN;
1862 }
1863
1864 static int control_pid_good(Service *s) {
1865 assert(s);
1866
1867 return s->control_pid > 0;
1868 }
1869
1870 static int cgroup_good(Service *s) {
1871 int r;
1872
1873 assert(s);
1874
1875 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->cgroup_bondings)) < 0)
1876 return r;
1877
1878 return !r;
1879 }
1880
1881 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1882 int r;
1883 assert(s);
1884
1885 if (f != SERVICE_SUCCESS)
1886 s->result = f;
1887
1888 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1889
1890 if (allow_restart &&
1891 !s->forbid_restart &&
1892 (s->restart == SERVICE_RESTART_ALWAYS ||
1893 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1894 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1895 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1896 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1897 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1898 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1899 (s->result != SERVICE_FAILURE_SIGNAL ||
1900 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))
1901 ) {
1902
1903 r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->restart_usec, &s->timer_watch);
1904 if (r < 0)
1905 goto fail;
1906
1907 service_set_state(s, SERVICE_AUTO_RESTART);
1908 }
1909
1910 s->forbid_restart = false;
1911
1912 return;
1913
1914 fail:
1915 log_warning("%s failed to run install restart timer: %s", UNIT(s)->id, strerror(-r));
1916 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1917 }
1918
1919 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
1920
1921 static void service_enter_stop_post(Service *s, ServiceResult f) {
1922 int r;
1923 assert(s);
1924
1925 if (f != SERVICE_SUCCESS)
1926 s->result = f;
1927
1928 service_unwatch_control_pid(s);
1929
1930 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1931 s->control_command_id = SERVICE_EXEC_STOP_POST;
1932
1933 r = service_spawn(s,
1934 s->control_command,
1935 true,
1936 false,
1937 !s->permissions_start_only,
1938 !s->root_directory_start_only,
1939 true,
1940 false,
1941 true,
1942 &s->control_pid);
1943 if (r < 0)
1944 goto fail;
1945
1946
1947 service_set_state(s, SERVICE_STOP_POST);
1948 } else
1949 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
1950
1951 return;
1952
1953 fail:
1954 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r));
1955 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1956 }
1957
1958 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1959 int r;
1960 Set *pid_set = NULL;
1961 bool wait_for_exit = false;
1962
1963 assert(s);
1964
1965 if (f != SERVICE_SUCCESS)
1966 s->result = f;
1967
1968 if (s->kill_context.kill_mode != KILL_NONE) {
1969 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->kill_context.kill_signal : SIGKILL;
1970
1971 if (s->main_pid > 0) {
1972 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
1973 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1974 else
1975 wait_for_exit = !s->main_pid_alien;
1976 }
1977
1978 if (s->control_pid > 0) {
1979 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1980 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1981 else
1982 wait_for_exit = true;
1983 }
1984
1985 if (s->kill_context.kill_mode == KILL_CONTROL_GROUP) {
1986
1987 pid_set = set_new(trivial_hash_func, trivial_compare_func);
1988 if (!pid_set) {
1989 r = -ENOMEM;
1990 goto fail;
1991 }
1992
1993 /* Exclude the main/control pids from being killed via the cgroup */
1994 if (s->main_pid > 0)
1995 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1996 goto fail;
1997
1998 if (s->control_pid > 0)
1999 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
2000 goto fail;
2001
2002 r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, false, pid_set, NULL);
2003 if (r < 0) {
2004 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
2005 log_warning("Failed to kill control group: %s", strerror(-r));
2006 } else if (r > 0)
2007 wait_for_exit = true;
2008
2009 set_free(pid_set);
2010 pid_set = NULL;
2011 }
2012 }
2013
2014 if (wait_for_exit) {
2015 if (s->timeout_stop_usec > 0) {
2016 r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->timeout_stop_usec, &s->timer_watch);
2017 if (r < 0)
2018 goto fail;
2019 }
2020
2021 service_set_state(s, state);
2022 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2023 service_enter_stop_post(s, SERVICE_SUCCESS);
2024 else
2025 service_enter_dead(s, SERVICE_SUCCESS, true);
2026
2027 return;
2028
2029 fail:
2030 log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
2031
2032 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2033 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
2034 else
2035 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2036
2037 if (pid_set)
2038 set_free(pid_set);
2039 }
2040
2041 static void service_enter_stop(Service *s, ServiceResult f) {
2042 int r;
2043
2044 assert(s);
2045
2046 if (f != SERVICE_SUCCESS)
2047 s->result = f;
2048
2049 service_unwatch_control_pid(s);
2050
2051 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
2052 s->control_command_id = SERVICE_EXEC_STOP;
2053
2054 r = service_spawn(s,
2055 s->control_command,
2056 true,
2057 false,
2058 !s->permissions_start_only,
2059 !s->root_directory_start_only,
2060 false,
2061 false,
2062 true,
2063 &s->control_pid);
2064 if (r < 0)
2065 goto fail;
2066
2067 service_set_state(s, SERVICE_STOP);
2068 } else
2069 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2070
2071 return;
2072
2073 fail:
2074 log_warning("%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2075 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2076 }
2077
2078 static void service_enter_running(Service *s, ServiceResult f) {
2079 int main_pid_ok, cgroup_ok;
2080 assert(s);
2081
2082 if (f != SERVICE_SUCCESS)
2083 s->result = f;
2084
2085 main_pid_ok = main_pid_good(s);
2086 cgroup_ok = cgroup_good(s);
2087
2088 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2089 (s->bus_name_good || s->type != SERVICE_DBUS))
2090 service_set_state(s, SERVICE_RUNNING);
2091 else if (s->remain_after_exit)
2092 service_set_state(s, SERVICE_EXITED);
2093 else
2094 service_enter_stop(s, SERVICE_SUCCESS);
2095 }
2096
2097 static void service_enter_start_post(Service *s) {
2098 int r;
2099 assert(s);
2100
2101 service_unwatch_control_pid(s);
2102
2103 if (s->watchdog_usec > 0)
2104 service_reset_watchdog(s);
2105
2106 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
2107 s->control_command_id = SERVICE_EXEC_START_POST;
2108
2109 r = service_spawn(s,
2110 s->control_command,
2111 true,
2112 false,
2113 !s->permissions_start_only,
2114 !s->root_directory_start_only,
2115 false,
2116 false,
2117 true,
2118 &s->control_pid);
2119 if (r < 0)
2120 goto fail;
2121
2122 service_set_state(s, SERVICE_START_POST);
2123 } else
2124 service_enter_running(s, SERVICE_SUCCESS);
2125
2126 return;
2127
2128 fail:
2129 log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2130 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2131 }
2132
2133 static void service_enter_start(Service *s) {
2134 pid_t pid;
2135 int r;
2136 ExecCommand *c;
2137
2138 assert(s);
2139
2140 assert(s->exec_command[SERVICE_EXEC_START]);
2141 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2142
2143 if (s->type == SERVICE_FORKING)
2144 service_unwatch_control_pid(s);
2145 else
2146 service_unwatch_main_pid(s);
2147
2148 /* We want to ensure that nobody leaks processes from
2149 * START_PRE here, so let's go on a killing spree, People
2150 * should not spawn long running processes from START_PRE. */
2151 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2152
2153 if (s->type == SERVICE_FORKING) {
2154 s->control_command_id = SERVICE_EXEC_START;
2155 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2156
2157 s->main_command = NULL;
2158 } else {
2159 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2160 s->control_command = NULL;
2161
2162 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2163 }
2164
2165 r = service_spawn(s,
2166 c,
2167 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2168 true,
2169 true,
2170 true,
2171 true,
2172 s->notify_access != NOTIFY_NONE,
2173 false,
2174 &pid);
2175 if (r < 0)
2176 goto fail;
2177
2178 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2179 /* For simple services we immediately start
2180 * the START_POST binaries. */
2181
2182 service_set_main_pid(s, pid);
2183 service_enter_start_post(s);
2184
2185 } else if (s->type == SERVICE_FORKING) {
2186
2187 /* For forking services we wait until the start
2188 * process exited. */
2189
2190 s->control_pid = pid;
2191 service_set_state(s, SERVICE_START);
2192
2193 } else if (s->type == SERVICE_ONESHOT ||
2194 s->type == SERVICE_DBUS ||
2195 s->type == SERVICE_NOTIFY) {
2196
2197 /* For oneshot services we wait until the start
2198 * process exited, too, but it is our main process. */
2199
2200 /* For D-Bus services we know the main pid right away,
2201 * but wait for the bus name to appear on the
2202 * bus. Notify services are similar. */
2203
2204 service_set_main_pid(s, pid);
2205 service_set_state(s, SERVICE_START);
2206 } else
2207 assert_not_reached("Unknown service type");
2208
2209 return;
2210
2211 fail:
2212 log_warning("%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2213 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2214 }
2215
2216 static void service_enter_start_pre(Service *s) {
2217 int r;
2218
2219 assert(s);
2220
2221 service_unwatch_control_pid(s);
2222
2223 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2224
2225 /* Before we start anything, let's clear up what might
2226 * be left from previous runs. */
2227 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2228
2229 s->control_command_id = SERVICE_EXEC_START_PRE;
2230
2231 r = service_spawn(s,
2232 s->control_command,
2233 true,
2234 false,
2235 !s->permissions_start_only,
2236 !s->root_directory_start_only,
2237 true,
2238 false,
2239 true,
2240 &s->control_pid);
2241 if (r < 0)
2242 goto fail;
2243
2244 service_set_state(s, SERVICE_START_PRE);
2245 } else
2246 service_enter_start(s);
2247
2248 return;
2249
2250 fail:
2251 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2252 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2253 }
2254
2255 static void service_enter_restart(Service *s) {
2256 int r;
2257 DBusError error;
2258
2259 assert(s);
2260 dbus_error_init(&error);
2261
2262 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2263 /* Don't restart things if we are going down anyway */
2264 log_info("Stop job pending for unit, delaying automatic restart.");
2265
2266 r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->restart_usec, &s->timer_watch);
2267 if (r < 0)
2268 goto fail;
2269
2270 return;
2271 }
2272
2273 /* Any units that are bound to this service must also be
2274 * restarted. We use JOB_RESTART (instead of the more obvious
2275 * JOB_START) here so that those dependency jobs will be added
2276 * as well. */
2277 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2278 if (r < 0)
2279 goto fail;
2280
2281 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2282 * it will be canceled as part of the service_stop() call that
2283 * is executed as part of JOB_RESTART. */
2284
2285 log_debug("%s scheduled restart job.", UNIT(s)->id);
2286 return;
2287
2288 fail:
2289 log_warning("%s failed to schedule restart job: %s", UNIT(s)->id, bus_error(&error, -r));
2290 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2291
2292 dbus_error_free(&error);
2293 }
2294
2295 static void service_enter_reload(Service *s) {
2296 int r;
2297
2298 assert(s);
2299
2300 service_unwatch_control_pid(s);
2301
2302 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2303 s->control_command_id = SERVICE_EXEC_RELOAD;
2304
2305 r = service_spawn(s,
2306 s->control_command,
2307 true,
2308 false,
2309 !s->permissions_start_only,
2310 !s->root_directory_start_only,
2311 false,
2312 false,
2313 true,
2314 &s->control_pid);
2315 if (r < 0)
2316 goto fail;
2317
2318 service_set_state(s, SERVICE_RELOAD);
2319 } else
2320 service_enter_running(s, SERVICE_SUCCESS);
2321
2322 return;
2323
2324 fail:
2325 log_warning("%s failed to run 'reload' task: %s", UNIT(s)->id, strerror(-r));
2326 s->reload_result = SERVICE_FAILURE_RESOURCES;
2327 service_enter_running(s, SERVICE_SUCCESS);
2328 }
2329
2330 static void service_run_next_control(Service *s) {
2331 int r;
2332
2333 assert(s);
2334 assert(s->control_command);
2335 assert(s->control_command->command_next);
2336
2337 assert(s->control_command_id != SERVICE_EXEC_START);
2338
2339 s->control_command = s->control_command->command_next;
2340 service_unwatch_control_pid(s);
2341
2342 r = service_spawn(s,
2343 s->control_command,
2344 true,
2345 false,
2346 !s->permissions_start_only,
2347 !s->root_directory_start_only,
2348 s->control_command_id == SERVICE_EXEC_START_PRE ||
2349 s->control_command_id == SERVICE_EXEC_STOP_POST,
2350 false,
2351 true,
2352 &s->control_pid);
2353 if (r < 0)
2354 goto fail;
2355
2356 return;
2357
2358 fail:
2359 log_warning("%s failed to run next control task: %s", UNIT(s)->id, strerror(-r));
2360
2361 if (s->state == SERVICE_START_PRE)
2362 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2363 else if (s->state == SERVICE_STOP)
2364 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2365 else if (s->state == SERVICE_STOP_POST)
2366 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2367 else if (s->state == SERVICE_RELOAD) {
2368 s->reload_result = SERVICE_FAILURE_RESOURCES;
2369 service_enter_running(s, SERVICE_SUCCESS);
2370 } else
2371 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2372 }
2373
2374 static void service_run_next_main(Service *s) {
2375 pid_t pid;
2376 int r;
2377
2378 assert(s);
2379 assert(s->main_command);
2380 assert(s->main_command->command_next);
2381 assert(s->type == SERVICE_ONESHOT);
2382
2383 s->main_command = s->main_command->command_next;
2384 service_unwatch_main_pid(s);
2385
2386 r = service_spawn(s,
2387 s->main_command,
2388 true,
2389 true,
2390 true,
2391 true,
2392 true,
2393 s->notify_access != NOTIFY_NONE,
2394 false,
2395 &pid);
2396 if (r < 0)
2397 goto fail;
2398
2399 service_set_main_pid(s, pid);
2400
2401 return;
2402
2403 fail:
2404 log_warning("%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2405 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2406 }
2407
2408 static int service_start_limit_test(Service *s) {
2409 assert(s);
2410
2411 if (ratelimit_test(&s->start_limit))
2412 return 0;
2413
2414 switch (s->start_limit_action) {
2415
2416 case SERVICE_START_LIMIT_NONE:
2417 log_warning("%s start request repeated too quickly, refusing to start.", UNIT(s)->id);
2418 break;
2419
2420 case SERVICE_START_LIMIT_REBOOT: {
2421 DBusError error;
2422 int r;
2423
2424 dbus_error_init(&error);
2425
2426 log_warning("%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2427
2428 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START, SPECIAL_REBOOT_TARGET, JOB_REPLACE, true, &error, NULL);
2429 if (r < 0) {
2430 log_error("Failed to reboot: %s.", bus_error(&error, r));
2431 dbus_error_free(&error);
2432 }
2433
2434 break;
2435 }
2436
2437 case SERVICE_START_LIMIT_REBOOT_FORCE:
2438 log_warning("%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2439 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2440 break;
2441
2442 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2443 log_warning("%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2444 sync();
2445 reboot(RB_AUTOBOOT);
2446 break;
2447
2448 default:
2449 log_error("start limit action=%i", s->start_limit_action);
2450 assert_not_reached("Unknown StartLimitAction.");
2451 }
2452
2453 return -ECANCELED;
2454 }
2455
2456 static int service_start(Unit *u) {
2457 Service *s = SERVICE(u);
2458 int r;
2459
2460 assert(s);
2461
2462 /* We cannot fulfill this request right now, try again later
2463 * please! */
2464 if (s->state == SERVICE_STOP ||
2465 s->state == SERVICE_STOP_SIGTERM ||
2466 s->state == SERVICE_STOP_SIGKILL ||
2467 s->state == SERVICE_STOP_POST ||
2468 s->state == SERVICE_FINAL_SIGTERM ||
2469 s->state == SERVICE_FINAL_SIGKILL)
2470 return -EAGAIN;
2471
2472 /* Already on it! */
2473 if (s->state == SERVICE_START_PRE ||
2474 s->state == SERVICE_START ||
2475 s->state == SERVICE_START_POST)
2476 return 0;
2477
2478 /* A service that will be restarted must be stopped first to
2479 * trigger BindsTo and/or OnFailure dependencies. If a user
2480 * does not want to wait for the holdoff time to elapse, the
2481 * service should be manually restarted, not started. We
2482 * simply return EAGAIN here, so that any start jobs stay
2483 * queued, and assume that the auto restart timer will
2484 * eventually trigger the restart. */
2485 if (s->state == SERVICE_AUTO_RESTART)
2486 return -EAGAIN;
2487
2488 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2489
2490 /* Make sure we don't enter a busy loop of some kind. */
2491 r = service_start_limit_test(s);
2492 if (r < 0) {
2493 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
2494 return r;
2495 }
2496
2497 s->result = SERVICE_SUCCESS;
2498 s->reload_result = SERVICE_SUCCESS;
2499 s->main_pid_known = false;
2500 s->main_pid_alien = false;
2501 s->forbid_restart = false;
2502
2503 service_enter_start_pre(s);
2504 return 0;
2505 }
2506
2507 static int service_stop(Unit *u) {
2508 Service *s = SERVICE(u);
2509
2510 assert(s);
2511
2512 /* Don't create restart jobs from here. */
2513 s->forbid_restart = true;
2514
2515 /* Already on it */
2516 if (s->state == SERVICE_STOP ||
2517 s->state == SERVICE_STOP_SIGTERM ||
2518 s->state == SERVICE_STOP_SIGKILL ||
2519 s->state == SERVICE_STOP_POST ||
2520 s->state == SERVICE_FINAL_SIGTERM ||
2521 s->state == SERVICE_FINAL_SIGKILL)
2522 return 0;
2523
2524 /* A restart will be scheduled or is in progress. */
2525 if (s->state == SERVICE_AUTO_RESTART) {
2526 service_set_state(s, SERVICE_DEAD);
2527 return 0;
2528 }
2529
2530 /* If there's already something running we go directly into
2531 * kill mode. */
2532 if (s->state == SERVICE_START_PRE ||
2533 s->state == SERVICE_START ||
2534 s->state == SERVICE_START_POST ||
2535 s->state == SERVICE_RELOAD) {
2536 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2537 return 0;
2538 }
2539
2540 assert(s->state == SERVICE_RUNNING ||
2541 s->state == SERVICE_EXITED);
2542
2543 service_enter_stop(s, SERVICE_SUCCESS);
2544 return 0;
2545 }
2546
2547 static int service_reload(Unit *u) {
2548 Service *s = SERVICE(u);
2549
2550 assert(s);
2551
2552 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2553
2554 service_enter_reload(s);
2555 return 0;
2556 }
2557
2558 static bool service_can_reload(Unit *u) {
2559 Service *s = SERVICE(u);
2560
2561 assert(s);
2562
2563 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2564 }
2565
2566 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2567 Service *s = SERVICE(u);
2568
2569 assert(u);
2570 assert(f);
2571 assert(fds);
2572
2573 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2574 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2575 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2576
2577 if (s->control_pid > 0)
2578 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2579
2580 if (s->main_pid_known && s->main_pid > 0)
2581 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2582
2583 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2584
2585 if (s->status_text)
2586 unit_serialize_item(u, f, "status-text", s->status_text);
2587
2588 /* FIXME: There's a minor uncleanliness here: if there are
2589 * multiple commands attached here, we will start from the
2590 * first one again */
2591 if (s->control_command_id >= 0)
2592 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2593
2594 if (s->socket_fd >= 0) {
2595 int copy;
2596
2597 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2598 return copy;
2599
2600 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2601 }
2602
2603 if (s->main_exec_status.pid > 0) {
2604 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2605 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2606 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2607
2608 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2609 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2610 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2611 }
2612 }
2613 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2614 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2615
2616 return 0;
2617 }
2618
2619 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2620 Service *s = SERVICE(u);
2621
2622 assert(u);
2623 assert(key);
2624 assert(value);
2625 assert(fds);
2626
2627 if (streq(key, "state")) {
2628 ServiceState state;
2629
2630 if ((state = service_state_from_string(value)) < 0)
2631 log_debug("Failed to parse state value %s", value);
2632 else
2633 s->deserialized_state = state;
2634 } else if (streq(key, "result")) {
2635 ServiceResult f;
2636
2637 f = service_result_from_string(value);
2638 if (f < 0)
2639 log_debug("Failed to parse result value %s", value);
2640 else if (f != SERVICE_SUCCESS)
2641 s->result = f;
2642
2643 } else if (streq(key, "reload-result")) {
2644 ServiceResult f;
2645
2646 f = service_result_from_string(value);
2647 if (f < 0)
2648 log_debug("Failed to parse reload result value %s", value);
2649 else if (f != SERVICE_SUCCESS)
2650 s->reload_result = f;
2651
2652 } else if (streq(key, "control-pid")) {
2653 pid_t pid;
2654
2655 if (parse_pid(value, &pid) < 0)
2656 log_debug("Failed to parse control-pid value %s", value);
2657 else
2658 s->control_pid = pid;
2659 } else if (streq(key, "main-pid")) {
2660 pid_t pid;
2661
2662 if (parse_pid(value, &pid) < 0)
2663 log_debug("Failed to parse main-pid value %s", value);
2664 else
2665 service_set_main_pid(s, (pid_t) pid);
2666 } else if (streq(key, "main-pid-known")) {
2667 int b;
2668
2669 if ((b = parse_boolean(value)) < 0)
2670 log_debug("Failed to parse main-pid-known value %s", value);
2671 else
2672 s->main_pid_known = b;
2673 } else if (streq(key, "status-text")) {
2674 char *t;
2675
2676 if ((t = strdup(value))) {
2677 free(s->status_text);
2678 s->status_text = t;
2679 }
2680
2681 } else if (streq(key, "control-command")) {
2682 ServiceExecCommand id;
2683
2684 if ((id = service_exec_command_from_string(value)) < 0)
2685 log_debug("Failed to parse exec-command value %s", value);
2686 else {
2687 s->control_command_id = id;
2688 s->control_command = s->exec_command[id];
2689 }
2690 } else if (streq(key, "socket-fd")) {
2691 int fd;
2692
2693 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2694 log_debug("Failed to parse socket-fd value %s", value);
2695 else {
2696
2697 if (s->socket_fd >= 0)
2698 close_nointr_nofail(s->socket_fd);
2699 s->socket_fd = fdset_remove(fds, fd);
2700 }
2701 } else if (streq(key, "main-exec-status-pid")) {
2702 pid_t pid;
2703
2704 if (parse_pid(value, &pid) < 0)
2705 log_debug("Failed to parse main-exec-status-pid value %s", value);
2706 else
2707 s->main_exec_status.pid = pid;
2708 } else if (streq(key, "main-exec-status-code")) {
2709 int i;
2710
2711 if (safe_atoi(value, &i) < 0)
2712 log_debug("Failed to parse main-exec-status-code value %s", value);
2713 else
2714 s->main_exec_status.code = i;
2715 } else if (streq(key, "main-exec-status-status")) {
2716 int i;
2717
2718 if (safe_atoi(value, &i) < 0)
2719 log_debug("Failed to parse main-exec-status-status value %s", value);
2720 else
2721 s->main_exec_status.status = i;
2722 } else if (streq(key, "main-exec-status-start"))
2723 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2724 else if (streq(key, "main-exec-status-exit"))
2725 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2726 else if (streq(key, "watchdog-timestamp"))
2727 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2728 else
2729 log_debug("Unknown serialization key '%s'", key);
2730
2731 return 0;
2732 }
2733
2734 static UnitActiveState service_active_state(Unit *u) {
2735 const UnitActiveState *table;
2736
2737 assert(u);
2738
2739 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2740
2741 return table[SERVICE(u)->state];
2742 }
2743
2744 static const char *service_sub_state_to_string(Unit *u) {
2745 assert(u);
2746
2747 return service_state_to_string(SERVICE(u)->state);
2748 }
2749
2750 static bool service_check_gc(Unit *u) {
2751 Service *s = SERVICE(u);
2752
2753 assert(s);
2754
2755 /* Never clean up services that still have a process around,
2756 * even if the service is formally dead. */
2757 if (cgroup_good(s) > 0 ||
2758 main_pid_good(s) > 0 ||
2759 control_pid_good(s) > 0)
2760 return true;
2761
2762 #ifdef HAVE_SYSV_COMPAT
2763 if (s->is_sysv)
2764 return true;
2765 #endif
2766
2767 return false;
2768 }
2769
2770 static bool service_check_snapshot(Unit *u) {
2771 Service *s = SERVICE(u);
2772
2773 assert(s);
2774
2775 return !s->got_socket_fd;
2776 }
2777
2778 static int service_retry_pid_file(Service *s) {
2779 int r;
2780
2781 assert(s->pid_file);
2782 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2783
2784 r = service_load_pid_file(s, false);
2785 if (r < 0)
2786 return r;
2787
2788 service_unwatch_pid_file(s);
2789
2790 service_enter_running(s, SERVICE_SUCCESS);
2791 return 0;
2792 }
2793
2794 static int service_watch_pid_file(Service *s) {
2795 int r;
2796
2797 log_debug("Setting watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
2798 r = path_spec_watch(s->pid_file_pathspec, UNIT(s));
2799 if (r < 0)
2800 goto fail;
2801
2802 /* the pidfile might have appeared just before we set the watch */
2803 service_retry_pid_file(s);
2804
2805 return 0;
2806 fail:
2807 log_error("Failed to set a watch for %s's PID file %s: %s",
2808 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2809 service_unwatch_pid_file(s);
2810 return r;
2811 }
2812
2813 static int service_demand_pid_file(Service *s) {
2814 PathSpec *ps;
2815
2816 assert(s->pid_file);
2817 assert(!s->pid_file_pathspec);
2818
2819 ps = new0(PathSpec, 1);
2820 if (!ps)
2821 return -ENOMEM;
2822
2823 ps->path = strdup(s->pid_file);
2824 if (!ps->path) {
2825 free(ps);
2826 return -ENOMEM;
2827 }
2828
2829 path_kill_slashes(ps->path);
2830
2831 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2832 * keep their PID file open all the time. */
2833 ps->type = PATH_MODIFIED;
2834 ps->inotify_fd = -1;
2835
2836 s->pid_file_pathspec = ps;
2837
2838 return service_watch_pid_file(s);
2839 }
2840
2841 static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
2842 Service *s = SERVICE(u);
2843
2844 assert(s);
2845 assert(fd >= 0);
2846 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2847 assert(s->pid_file_pathspec);
2848 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2849
2850 log_debug("inotify event for %s", u->id);
2851
2852 if (path_spec_fd_event(s->pid_file_pathspec, events) < 0)
2853 goto fail;
2854
2855 if (service_retry_pid_file(s) == 0)
2856 return;
2857
2858 if (service_watch_pid_file(s) < 0)
2859 goto fail;
2860
2861 return;
2862 fail:
2863 service_unwatch_pid_file(s);
2864 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2865 }
2866
2867 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2868 Service *s = SERVICE(u);
2869 ServiceResult f;
2870
2871 assert(s);
2872 assert(pid >= 0);
2873
2874 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2875 is_clean_exit_lsb(code, status, &s->success_status))
2876 f = SERVICE_SUCCESS;
2877 else if (code == CLD_EXITED)
2878 f = SERVICE_FAILURE_EXIT_CODE;
2879 else if (code == CLD_KILLED)
2880 f = SERVICE_FAILURE_SIGNAL;
2881 else if (code == CLD_DUMPED)
2882 f = SERVICE_FAILURE_CORE_DUMP;
2883 else
2884 assert_not_reached("Unknown code");
2885
2886 if (s->main_pid == pid) {
2887 /* Forking services may occasionally move to a new PID.
2888 * As long as they update the PID file before exiting the old
2889 * PID, they're fine. */
2890 if (service_load_pid_file(s, false) == 0)
2891 return;
2892
2893 s->main_pid = 0;
2894 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2895
2896 /* If this is not a forking service than the main
2897 * process got started and hence we copy the exit
2898 * status so that it is recorded both as main and as
2899 * control process exit status */
2900 if (s->main_command) {
2901 s->main_command->exec_status = s->main_exec_status;
2902
2903 if (s->main_command->ignore)
2904 f = SERVICE_SUCCESS;
2905 }
2906
2907 log_struct(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2908 "MESSAGE=%s: main process exited, code=%s, status=%i/%s",
2909 u->id, sigchld_code_to_string(code), status,
2910 strna(code == CLD_EXITED
2911 ? exit_status_to_string(status, EXIT_STATUS_FULL)
2912 : signal_to_string(status)),
2913 "UNIT=%s", u->id,
2914 "EXIT_CODE=%s", sigchld_code_to_string(code),
2915 "EXIT_STATUS=%i", status,
2916 NULL);
2917
2918 if (f != SERVICE_SUCCESS)
2919 s->result = f;
2920
2921 if (s->main_command &&
2922 s->main_command->command_next &&
2923 f == SERVICE_SUCCESS) {
2924
2925 /* There is another command to *
2926 * execute, so let's do that. */
2927
2928 log_debug("%s running next main command for state %s", u->id, service_state_to_string(s->state));
2929 service_run_next_main(s);
2930
2931 } else {
2932
2933 /* The service exited, so the service is officially
2934 * gone. */
2935 s->main_command = NULL;
2936
2937 switch (s->state) {
2938
2939 case SERVICE_START_POST:
2940 case SERVICE_RELOAD:
2941 case SERVICE_STOP:
2942 /* Need to wait until the operation is
2943 * done */
2944 break;
2945
2946 case SERVICE_START:
2947 if (s->type == SERVICE_ONESHOT) {
2948 /* This was our main goal, so let's go on */
2949 if (f == SERVICE_SUCCESS)
2950 service_enter_start_post(s);
2951 else
2952 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
2953 break;
2954 }
2955
2956 /* Fall through */
2957
2958 case SERVICE_RUNNING:
2959 service_enter_running(s, f);
2960 break;
2961
2962 case SERVICE_STOP_SIGTERM:
2963 case SERVICE_STOP_SIGKILL:
2964
2965 if (!control_pid_good(s))
2966 service_enter_stop_post(s, f);
2967
2968 /* If there is still a control process, wait for that first */
2969 break;
2970
2971 default:
2972 assert_not_reached("Uh, main process died at wrong time.");
2973 }
2974 }
2975
2976 } else if (s->control_pid == pid) {
2977
2978 s->control_pid = 0;
2979
2980 if (s->control_command) {
2981 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
2982
2983 if (s->control_command->ignore)
2984 f = SERVICE_SUCCESS;
2985 }
2986
2987 log_full(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2988 "%s: control process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
2989
2990 if (f != SERVICE_SUCCESS)
2991 s->result = f;
2992
2993 /* Immediately get rid of the cgroup, so that the
2994 * kernel doesn't delay the cgroup empty messages for
2995 * the service cgroup any longer than necessary */
2996 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2997
2998 if (s->control_command &&
2999 s->control_command->command_next &&
3000 f == SERVICE_SUCCESS) {
3001
3002 /* There is another command to *
3003 * execute, so let's do that. */
3004
3005 log_debug("%s running next control command for state %s", u->id, service_state_to_string(s->state));
3006 service_run_next_control(s);
3007
3008 } else {
3009 /* No further commands for this step, so let's
3010 * figure out what to do next */
3011
3012 s->control_command = NULL;
3013 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3014
3015 log_debug("%s got final SIGCHLD for state %s", u->id, service_state_to_string(s->state));
3016
3017 switch (s->state) {
3018
3019 case SERVICE_START_PRE:
3020 if (f == SERVICE_SUCCESS)
3021 service_enter_start(s);
3022 else
3023 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3024 break;
3025
3026 case SERVICE_START:
3027 if (s->type != SERVICE_FORKING)
3028 /* Maybe spurious event due to a reload that changed the type? */
3029 break;
3030
3031 if (f != SERVICE_SUCCESS) {
3032 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3033 break;
3034 }
3035
3036 if (s->pid_file) {
3037 bool has_start_post;
3038 int r;
3039
3040 /* Let's try to load the pid file here if we can.
3041 * The PID file might actually be created by a START_POST
3042 * script. In that case don't worry if the loading fails. */
3043
3044 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3045 r = service_load_pid_file(s, !has_start_post);
3046 if (!has_start_post && r < 0) {
3047 r = service_demand_pid_file(s);
3048 if (r < 0 || !cgroup_good(s))
3049 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3050 break;
3051 }
3052 } else
3053 service_search_main_pid(s);
3054
3055 service_enter_start_post(s);
3056 break;
3057
3058 case SERVICE_START_POST:
3059 if (f != SERVICE_SUCCESS) {
3060 service_enter_stop(s, f);
3061 break;
3062 }
3063
3064 if (s->pid_file) {
3065 int r;
3066
3067 r = service_load_pid_file(s, true);
3068 if (r < 0) {
3069 r = service_demand_pid_file(s);
3070 if (r < 0 || !cgroup_good(s))
3071 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3072 break;
3073 }
3074 } else
3075 service_search_main_pid(s);
3076
3077 service_enter_running(s, SERVICE_SUCCESS);
3078 break;
3079
3080 case SERVICE_RELOAD:
3081 if (f == SERVICE_SUCCESS) {
3082 service_load_pid_file(s, true);
3083 service_search_main_pid(s);
3084 }
3085
3086 s->reload_result = f;
3087 service_enter_running(s, SERVICE_SUCCESS);
3088 break;
3089
3090 case SERVICE_STOP:
3091 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3092 break;
3093
3094 case SERVICE_STOP_SIGTERM:
3095 case SERVICE_STOP_SIGKILL:
3096 if (main_pid_good(s) <= 0)
3097 service_enter_stop_post(s, f);
3098
3099 /* If there is still a service
3100 * process around, wait until
3101 * that one quit, too */
3102 break;
3103
3104 case SERVICE_STOP_POST:
3105 case SERVICE_FINAL_SIGTERM:
3106 case SERVICE_FINAL_SIGKILL:
3107 service_enter_dead(s, f, true);
3108 break;
3109
3110 default:
3111 assert_not_reached("Uh, control process died at wrong time.");
3112 }
3113 }
3114 }
3115
3116 /* Notify clients about changed exit status */
3117 unit_add_to_dbus_queue(u);
3118 }
3119
3120 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
3121 Service *s = SERVICE(u);
3122
3123 assert(s);
3124 assert(elapsed == 1);
3125
3126 if (w == &s->watchdog_watch) {
3127 service_handle_watchdog(s);
3128 return;
3129 }
3130
3131 assert(w == &s->timer_watch);
3132
3133 switch (s->state) {
3134
3135 case SERVICE_START_PRE:
3136 case SERVICE_START:
3137 log_warning("%s operation timed out. Terminating.", u->id);
3138 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3139 break;
3140
3141 case SERVICE_START_POST:
3142 log_warning("%s operation timed out. Stopping.", u->id);
3143 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3144 break;
3145
3146 case SERVICE_RELOAD:
3147 log_warning("%s operation timed out. Stopping.", u->id);
3148 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3149 service_enter_running(s, SERVICE_SUCCESS);
3150 break;
3151
3152 case SERVICE_STOP:
3153 log_warning("%s stopping timed out. Terminating.", u->id);
3154 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3155 break;
3156
3157 case SERVICE_STOP_SIGTERM:
3158 if (s->kill_context.send_sigkill) {
3159 log_warning("%s stopping timed out. Killing.", u->id);
3160 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3161 } else {
3162 log_warning("%s stopping timed out. Skipping SIGKILL.", u->id);
3163 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3164 }
3165
3166 break;
3167
3168 case SERVICE_STOP_SIGKILL:
3169 /* Uh, we sent a SIGKILL and it is still not gone?
3170 * Must be something we cannot kill, so let's just be
3171 * weirded out and continue */
3172
3173 log_warning("%s still around after SIGKILL. Ignoring.", u->id);
3174 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3175 break;
3176
3177 case SERVICE_STOP_POST:
3178 log_warning("%s stopping timed out (2). Terminating.", u->id);
3179 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3180 break;
3181
3182 case SERVICE_FINAL_SIGTERM:
3183 if (s->kill_context.send_sigkill) {
3184 log_warning("%s stopping timed out (2). Killing.", u->id);
3185 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3186 } else {
3187 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->id);
3188 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3189 }
3190
3191 break;
3192
3193 case SERVICE_FINAL_SIGKILL:
3194 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->id);
3195 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3196 break;
3197
3198 case SERVICE_AUTO_RESTART:
3199 log_info("%s holdoff time over, scheduling restart.", u->id);
3200 service_enter_restart(s);
3201 break;
3202
3203 default:
3204 assert_not_reached("Timeout at wrong time.");
3205 }
3206 }
3207
3208 static void service_cgroup_notify_event(Unit *u) {
3209 Service *s = SERVICE(u);
3210
3211 assert(u);
3212
3213 log_debug("%s: cgroup is empty", u->id);
3214
3215 switch (s->state) {
3216
3217 /* Waiting for SIGCHLD is usually more interesting,
3218 * because it includes return codes/signals. Which is
3219 * why we ignore the cgroup events for most cases,
3220 * except when we don't know pid which to expect the
3221 * SIGCHLD for. */
3222
3223 case SERVICE_START:
3224 case SERVICE_START_POST:
3225 /* If we were hoping for the daemon to write its PID file,
3226 * we can give up now. */
3227 if (s->pid_file_pathspec) {
3228 log_warning("%s never wrote its PID file. Failing.", UNIT(s)->id);
3229 service_unwatch_pid_file(s);
3230 if (s->state == SERVICE_START)
3231 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3232 else
3233 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3234 }
3235 break;
3236
3237 case SERVICE_RUNNING:
3238 /* service_enter_running() will figure out what to do */
3239 service_enter_running(s, SERVICE_SUCCESS);
3240 break;
3241
3242 case SERVICE_STOP_SIGTERM:
3243 case SERVICE_STOP_SIGKILL:
3244
3245 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3246 service_enter_stop_post(s, SERVICE_SUCCESS);
3247
3248 break;
3249
3250 case SERVICE_FINAL_SIGTERM:
3251 case SERVICE_FINAL_SIGKILL:
3252 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3253 service_enter_dead(s, SERVICE_SUCCESS, true);
3254
3255 break;
3256
3257 default:
3258 ;
3259 }
3260 }
3261
3262 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3263 Service *s = SERVICE(u);
3264 const char *e;
3265
3266 assert(u);
3267
3268 if (s->notify_access == NOTIFY_NONE) {
3269 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
3270 u->id, (unsigned long) pid);
3271 return;
3272 }
3273
3274 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3275 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
3276 u->id, (unsigned long) pid, (unsigned long) s->main_pid);
3277 return;
3278 }
3279
3280 log_debug("%s: Got message", u->id);
3281
3282 /* Interpret MAINPID= */
3283 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3284 (s->state == SERVICE_START ||
3285 s->state == SERVICE_START_POST ||
3286 s->state == SERVICE_RUNNING ||
3287 s->state == SERVICE_RELOAD)) {
3288
3289 if (parse_pid(e + 8, &pid) < 0)
3290 log_warning("Failed to parse notification message %s", e);
3291 else {
3292 log_debug("%s: got %s", u->id, e);
3293 service_set_main_pid(s, pid);
3294 }
3295 }
3296
3297 /* Interpret READY= */
3298 if (s->type == SERVICE_NOTIFY &&
3299 s->state == SERVICE_START &&
3300 strv_find(tags, "READY=1")) {
3301 log_debug("%s: got READY=1", u->id);
3302
3303 service_enter_start_post(s);
3304 }
3305
3306 /* Interpret STATUS= */
3307 e = strv_find_prefix(tags, "STATUS=");
3308 if (e) {
3309 char *t;
3310
3311 if (e[7]) {
3312
3313 if (!utf8_is_valid(e+7)) {
3314 log_warning("Status message in notification is not UTF-8 clean.");
3315 return;
3316 }
3317
3318 t = strdup(e+7);
3319 if (!t) {
3320 log_error("Failed to allocate string.");
3321 return;
3322 }
3323
3324 log_debug("%s: got %s", u->id, e);
3325
3326 free(s->status_text);
3327 s->status_text = t;
3328 } else {
3329 free(s->status_text);
3330 s->status_text = NULL;
3331 }
3332
3333 }
3334 if (strv_find(tags, "WATCHDOG=1")) {
3335 log_debug("%s: got WATCHDOG=1", u->id);
3336 service_reset_watchdog(s);
3337 }
3338
3339 /* Notify clients about changed status or main pid */
3340 unit_add_to_dbus_queue(u);
3341 }
3342
3343 #ifdef HAVE_SYSV_COMPAT
3344
3345 #ifdef TARGET_SUSE
3346 static void sysv_facility_in_insserv_conf(Manager *mgr) {
3347 FILE *f=NULL;
3348 int r;
3349
3350 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3351 r = errno == ENOENT ? 0 : -errno;
3352 goto finish;
3353 }
3354
3355 while (!feof(f)) {
3356 char l[LINE_MAX], *t;
3357 char **parsed = NULL;
3358
3359 if (!fgets(l, sizeof(l), f)) {
3360 if (feof(f))
3361 break;
3362
3363 r = -errno;
3364 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3365 goto finish;
3366 }
3367
3368 t = strstrip(l);
3369 if (*t != '$' && *t != '<')
3370 continue;
3371
3372 parsed = strv_split(t,WHITESPACE);
3373 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3374 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3375 char *facility;
3376 Unit *u;
3377 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3378 continue;
3379 if ((u = manager_get_unit(mgr, facility)) && (u->type == UNIT_TARGET)) {
3380 UnitDependency e;
3381 char *dep = NULL, *name, **j;
3382
3383 STRV_FOREACH (j, parsed+1) {
3384 if (*j[0]=='+') {
3385 e = UNIT_WANTS;
3386 name = *j+1;
3387 }
3388 else {
3389 e = UNIT_REQUIRES;
3390 name = *j;
3391 }
3392 if (sysv_translate_facility(name, NULL, &dep) < 0)
3393 continue;
3394
3395 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3396 free(dep);
3397 }
3398 }
3399 free(facility);
3400 }
3401 strv_free(parsed);
3402 }
3403 finish:
3404 if (f)
3405 fclose(f);
3406
3407 }
3408 #endif
3409
3410 static int service_enumerate(Manager *m) {
3411 char **p;
3412 unsigned i;
3413 DIR *d = NULL;
3414 char *path = NULL, *fpath = NULL, *name = NULL;
3415 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3416 Unit *service;
3417 Iterator j;
3418 int r;
3419
3420 assert(m);
3421
3422 if (m->running_as != SYSTEMD_SYSTEM)
3423 return 0;
3424
3425 zero(runlevel_services);
3426
3427 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3428 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3429 struct dirent *de;
3430
3431 free(path);
3432 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3433 if (!path) {
3434 r = -ENOMEM;
3435 goto finish;
3436 }
3437
3438 if (d)
3439 closedir(d);
3440
3441 if (!(d = opendir(path))) {
3442 if (errno != ENOENT)
3443 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3444
3445 continue;
3446 }
3447
3448 while ((de = readdir(d))) {
3449 int a, b;
3450
3451 if (ignore_file(de->d_name))
3452 continue;
3453
3454 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3455 continue;
3456
3457 if (strlen(de->d_name) < 4)
3458 continue;
3459
3460 a = undecchar(de->d_name[1]);
3461 b = undecchar(de->d_name[2]);
3462
3463 if (a < 0 || b < 0)
3464 continue;
3465
3466 free(fpath);
3467 fpath = strjoin(path, "/", de->d_name, NULL);
3468 if (!fpath) {
3469 r = -ENOMEM;
3470 goto finish;
3471 }
3472
3473 if (access(fpath, X_OK) < 0) {
3474
3475 if (errno != ENOENT)
3476 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3477
3478 continue;
3479 }
3480
3481 free(name);
3482 if (!(name = sysv_translate_name(de->d_name + 3))) {
3483 r = -ENOMEM;
3484 goto finish;
3485 }
3486
3487 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3488 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3489 continue;
3490 }
3491
3492 if (de->d_name[0] == 'S') {
3493
3494 if (rcnd_table[i].type == RUNLEVEL_UP) {
3495 SERVICE(service)->sysv_start_priority_from_rcnd =
3496 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3497
3498 SERVICE(service)->sysv_enabled = true;
3499 }
3500
3501 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3502 goto finish;
3503
3504 if ((r = set_put(runlevel_services[i], service)) < 0)
3505 goto finish;
3506
3507 } else if (de->d_name[0] == 'K' &&
3508 (rcnd_table[i].type == RUNLEVEL_DOWN)) {
3509
3510 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3511 goto finish;
3512
3513 if ((r = set_put(shutdown_services, service)) < 0)
3514 goto finish;
3515 }
3516 }
3517 }
3518
3519 /* Now we loaded all stubs and are aware of the lowest
3520 start-up priority for all services, not let's actually load
3521 the services, this will also tell us which services are
3522 actually native now */
3523 manager_dispatch_load_queue(m);
3524
3525 /* If this is a native service, rely on native ways to pull in
3526 * a service, don't pull it in via sysv rcN.d links. */
3527 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3528 SET_FOREACH(service, runlevel_services[i], j) {
3529 service = unit_follow_merge(service);
3530
3531 if (service->fragment_path)
3532 continue;
3533
3534 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3535 goto finish;
3536 }
3537
3538 /* We honour K links only for halt/reboot. For the normal
3539 * runlevels we assume the stop jobs will be implicitly added
3540 * by the core logic. Also, we don't really distinguish here
3541 * between the runlevels 0 and 6 and just add them to the
3542 * special shutdown target. */
3543 SET_FOREACH(service, shutdown_services, j) {
3544 service = unit_follow_merge(service);
3545
3546 if (service->fragment_path)
3547 continue;
3548
3549 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3550 goto finish;
3551 }
3552
3553 r = 0;
3554
3555 #ifdef TARGET_SUSE
3556 sysv_facility_in_insserv_conf (m);
3557 #endif
3558
3559 finish:
3560 free(path);
3561 free(fpath);
3562 free(name);
3563
3564 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3565 set_free(runlevel_services[i]);
3566 set_free(shutdown_services);
3567
3568 if (d)
3569 closedir(d);
3570
3571 return r;
3572 }
3573 #endif
3574
3575 static void service_bus_name_owner_change(
3576 Unit *u,
3577 const char *name,
3578 const char *old_owner,
3579 const char *new_owner) {
3580
3581 Service *s = SERVICE(u);
3582
3583 assert(s);
3584 assert(name);
3585
3586 assert(streq(s->bus_name, name));
3587 assert(old_owner || new_owner);
3588
3589 if (old_owner && new_owner)
3590 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->id, name, old_owner, new_owner);
3591 else if (old_owner)
3592 log_debug("%s's D-Bus name %s no longer registered by %s", u->id, name, old_owner);
3593 else
3594 log_debug("%s's D-Bus name %s now registered by %s", u->id, name, new_owner);
3595
3596 s->bus_name_good = !!new_owner;
3597
3598 if (s->type == SERVICE_DBUS) {
3599
3600 /* service_enter_running() will figure out what to
3601 * do */
3602 if (s->state == SERVICE_RUNNING)
3603 service_enter_running(s, SERVICE_SUCCESS);
3604 else if (s->state == SERVICE_START && new_owner)
3605 service_enter_start_post(s);
3606
3607 } else if (new_owner &&
3608 s->main_pid <= 0 &&
3609 (s->state == SERVICE_START ||
3610 s->state == SERVICE_START_POST ||
3611 s->state == SERVICE_RUNNING ||
3612 s->state == SERVICE_RELOAD)) {
3613
3614 /* Try to acquire PID from bus service */
3615 log_debug("Trying to acquire PID from D-Bus name...");
3616
3617 bus_query_pid(u->manager, name);
3618 }
3619 }
3620
3621 static void service_bus_query_pid_done(
3622 Unit *u,
3623 const char *name,
3624 pid_t pid) {
3625
3626 Service *s = SERVICE(u);
3627
3628 assert(s);
3629 assert(name);
3630
3631 log_debug("%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3632
3633 if (s->main_pid <= 0 &&
3634 (s->state == SERVICE_START ||
3635 s->state == SERVICE_START_POST ||
3636 s->state == SERVICE_RUNNING ||
3637 s->state == SERVICE_RELOAD))
3638 service_set_main_pid(s, pid);
3639 }
3640
3641 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3642
3643 assert(s);
3644 assert(fd >= 0);
3645
3646 /* This is called by the socket code when instantiating a new
3647 * service for a stream socket and the socket needs to be
3648 * configured. */
3649
3650 if (UNIT(s)->load_state != UNIT_LOADED)
3651 return -EINVAL;
3652
3653 if (s->socket_fd >= 0)
3654 return -EBUSY;
3655
3656 if (s->state != SERVICE_DEAD)
3657 return -EAGAIN;
3658
3659 s->socket_fd = fd;
3660 s->got_socket_fd = true;
3661
3662 unit_ref_set(&s->accept_socket, UNIT(sock));
3663
3664 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3665 }
3666
3667 static void service_reset_failed(Unit *u) {
3668 Service *s = SERVICE(u);
3669
3670 assert(s);
3671
3672 if (s->state == SERVICE_FAILED)
3673 service_set_state(s, SERVICE_DEAD);
3674
3675 s->result = SERVICE_SUCCESS;
3676 s->reload_result = SERVICE_SUCCESS;
3677
3678 RATELIMIT_RESET(s->start_limit);
3679 }
3680
3681 static int service_kill(Unit *u, KillWho who, int signo, DBusError *error) {
3682 Service *s = SERVICE(u);
3683 int r = 0;
3684 Set *pid_set = NULL;
3685
3686 assert(s);
3687
3688 if (s->main_pid <= 0 && who == KILL_MAIN) {
3689 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3690 return -ESRCH;
3691 }
3692
3693 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3694 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3695 return -ESRCH;
3696 }
3697
3698 if (who == KILL_CONTROL || who == KILL_ALL)
3699 if (s->control_pid > 0)
3700 if (kill(s->control_pid, signo) < 0)
3701 r = -errno;
3702
3703 if (who == KILL_MAIN || who == KILL_ALL)
3704 if (s->main_pid > 0)
3705 if (kill(s->main_pid, signo) < 0)
3706 r = -errno;
3707
3708 if (who == KILL_ALL) {
3709 int q;
3710
3711 pid_set = set_new(trivial_hash_func, trivial_compare_func);
3712 if (!pid_set)
3713 return -ENOMEM;
3714
3715 /* Exclude the control/main pid from being killed via the cgroup */
3716 if (s->control_pid > 0) {
3717 q = set_put(pid_set, LONG_TO_PTR(s->control_pid));
3718 if (q < 0) {
3719 r = q;
3720 goto finish;
3721 }
3722 }
3723
3724 if (s->main_pid > 0) {
3725 q = set_put(pid_set, LONG_TO_PTR(s->main_pid));
3726 if (q < 0) {
3727 r = q;
3728 goto finish;
3729 }
3730 }
3731
3732 q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, false, pid_set, NULL);
3733 if (q < 0 && q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3734 r = q;
3735 }
3736
3737 finish:
3738 if (pid_set)
3739 set_free(pid_set);
3740
3741 return r;
3742 }
3743
3744 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3745 [SERVICE_DEAD] = "dead",
3746 [SERVICE_START_PRE] = "start-pre",
3747 [SERVICE_START] = "start",
3748 [SERVICE_START_POST] = "start-post",
3749 [SERVICE_RUNNING] = "running",
3750 [SERVICE_EXITED] = "exited",
3751 [SERVICE_RELOAD] = "reload",
3752 [SERVICE_STOP] = "stop",
3753 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3754 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3755 [SERVICE_STOP_POST] = "stop-post",
3756 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3757 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3758 [SERVICE_FAILED] = "failed",
3759 [SERVICE_AUTO_RESTART] = "auto-restart",
3760 };
3761
3762 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3763
3764 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3765 [SERVICE_RESTART_NO] = "no",
3766 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3767 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3768 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3769 [SERVICE_RESTART_ALWAYS] = "always"
3770 };
3771
3772 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3773
3774 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3775 [SERVICE_SIMPLE] = "simple",
3776 [SERVICE_FORKING] = "forking",
3777 [SERVICE_ONESHOT] = "oneshot",
3778 [SERVICE_DBUS] = "dbus",
3779 [SERVICE_NOTIFY] = "notify",
3780 [SERVICE_IDLE] = "idle"
3781 };
3782
3783 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3784
3785 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3786 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3787 [SERVICE_EXEC_START] = "ExecStart",
3788 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3789 [SERVICE_EXEC_RELOAD] = "ExecReload",
3790 [SERVICE_EXEC_STOP] = "ExecStop",
3791 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3792 };
3793
3794 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3795
3796 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3797 [NOTIFY_NONE] = "none",
3798 [NOTIFY_MAIN] = "main",
3799 [NOTIFY_ALL] = "all"
3800 };
3801
3802 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3803
3804 static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3805 [SERVICE_SUCCESS] = "success",
3806 [SERVICE_FAILURE_RESOURCES] = "resources",
3807 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3808 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3809 [SERVICE_FAILURE_SIGNAL] = "signal",
3810 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3811 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
3812 [SERVICE_FAILURE_START_LIMIT] = "start-limit"
3813 };
3814
3815 DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3816
3817 static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3818 [SERVICE_START_LIMIT_NONE] = "none",
3819 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3820 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3821 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3822 };
3823 DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3824
3825 const UnitVTable service_vtable = {
3826 .object_size = sizeof(Service),
3827 .exec_context_offset = offsetof(Service, exec_context),
3828
3829 .sections =
3830 "Unit\0"
3831 "Service\0"
3832 "Install\0",
3833
3834 .init = service_init,
3835 .done = service_done,
3836 .load = service_load,
3837
3838 .coldplug = service_coldplug,
3839
3840 .dump = service_dump,
3841
3842 .start = service_start,
3843 .stop = service_stop,
3844 .reload = service_reload,
3845
3846 .can_reload = service_can_reload,
3847
3848 .kill = service_kill,
3849
3850 .serialize = service_serialize,
3851 .deserialize_item = service_deserialize_item,
3852
3853 .active_state = service_active_state,
3854 .sub_state_to_string = service_sub_state_to_string,
3855
3856 .check_gc = service_check_gc,
3857 .check_snapshot = service_check_snapshot,
3858
3859 .sigchld_event = service_sigchld_event,
3860 .timer_event = service_timer_event,
3861 .fd_event = service_fd_event,
3862
3863 .reset_failed = service_reset_failed,
3864
3865 .cgroup_notify_empty = service_cgroup_notify_event,
3866 .notify_message = service_notify_message,
3867
3868 .bus_name_owner_change = service_bus_name_owner_change,
3869 .bus_query_pid_done = service_bus_query_pid_done,
3870
3871 .bus_interface = "org.freedesktop.systemd1.Service",
3872 .bus_message_handler = bus_service_message_handler,
3873 .bus_invalidating_properties = bus_service_invalidating_properties,
3874
3875 #ifdef HAVE_SYSV_COMPAT
3876 .enumerate = service_enumerate,
3877 #endif
3878 .status_message_formats = {
3879 .starting_stopping = {
3880 [0] = "Starting %s...",
3881 [1] = "Stopping %s...",
3882 },
3883 .finished_start_job = {
3884 [JOB_DONE] = "Started %s.",
3885 [JOB_FAILED] = "Failed to start %s.",
3886 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3887 [JOB_TIMEOUT] = "Timed out starting %s.",
3888 },
3889 .finished_stop_job = {
3890 [JOB_DONE] = "Stopped %s.",
3891 [JOB_FAILED] = "Stopped (with error) %s.",
3892 [JOB_TIMEOUT] = "Timed out stopping %s.",
3893 },
3894 },
3895 };
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