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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 General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20***/
21
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 "dbus-service.h"
37#include "special.h"
38#include "bus-errors.h"
39#include "exit-status.h"
40#include "def.h"
41#include "util.h"
42
43#ifdef HAVE_SYSV_COMPAT
44
45#define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE)
46
47typedef enum RunlevelType {
48 RUNLEVEL_UP,
49 RUNLEVEL_DOWN,
50 RUNLEVEL_SYSINIT
51} RunlevelType;
52
53static const struct {
54 const char *path;
55 const char *target;
56 const RunlevelType type;
57} rcnd_table[] = {
58 /* Standard SysV runlevels for start-up */
59 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
60 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
61 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
62 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
63 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
64
65#ifdef TARGET_SUSE
66 /* SUSE style boot.d */
67 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
68#endif
69
70#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
71 /* Debian style rcS.d */
72 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
73#endif
74
75 /* Standard SysV runlevels for shutdown */
76 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
77 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
78
79 /* Note that the order here matters, as we read the
80 directories in this order, and we want to make sure that
81 sysv_start_priority is known when we first load the
82 unit. And that value we only know from S links. Hence
83 UP/SYSINIT must be read before DOWN */
84};
85
86#define RUNLEVELS_UP "12345"
87/* #define RUNLEVELS_DOWN "06" */
88#define RUNLEVELS_BOOT "bBsS"
89#endif
90
91static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
92 [SERVICE_DEAD] = UNIT_INACTIVE,
93 [SERVICE_START_PRE] = UNIT_ACTIVATING,
94 [SERVICE_START] = UNIT_ACTIVATING,
95 [SERVICE_START_POST] = UNIT_ACTIVATING,
96 [SERVICE_RUNNING] = UNIT_ACTIVE,
97 [SERVICE_EXITED] = UNIT_ACTIVE,
98 [SERVICE_RELOAD] = UNIT_RELOADING,
99 [SERVICE_STOP] = UNIT_DEACTIVATING,
100 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
101 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
102 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
103 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
104 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
105 [SERVICE_FAILED] = UNIT_FAILED,
106 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
107};
108
109static void service_init(Unit *u) {
110 Service *s = SERVICE(u);
111
112 assert(u);
113 assert(u->load_state == UNIT_STUB);
114
115 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
116 s->restart_usec = DEFAULT_RESTART_USEC;
117
118 s->watchdog_watch.type = WATCH_INVALID;
119
120 s->timer_watch.type = WATCH_INVALID;
121#ifdef HAVE_SYSV_COMPAT
122 s->sysv_start_priority = -1;
123 s->sysv_start_priority_from_rcnd = -1;
124#endif
125 s->socket_fd = -1;
126 s->guess_main_pid = true;
127
128 exec_context_init(&s->exec_context);
129
130 RATELIMIT_INIT(s->start_limit, 10*USEC_PER_SEC, 5);
131
132 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
133}
134
135static void service_unwatch_control_pid(Service *s) {
136 assert(s);
137
138 if (s->control_pid <= 0)
139 return;
140
141 unit_unwatch_pid(UNIT(s), s->control_pid);
142 s->control_pid = 0;
143}
144
145static void service_unwatch_main_pid(Service *s) {
146 assert(s);
147
148 if (s->main_pid <= 0)
149 return;
150
151 unit_unwatch_pid(UNIT(s), s->main_pid);
152 s->main_pid = 0;
153}
154
155static void service_unwatch_pid_file(Service *s) {
156 if (!s->pid_file_pathspec)
157 return;
158
159 log_debug("Stopping watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
160 path_spec_unwatch(s->pid_file_pathspec, UNIT(s));
161 path_spec_done(s->pid_file_pathspec);
162 free(s->pid_file_pathspec);
163 s->pid_file_pathspec = NULL;
164}
165
166static int service_set_main_pid(Service *s, pid_t pid) {
167 pid_t ppid;
168
169 assert(s);
170
171 if (pid <= 1)
172 return -EINVAL;
173
174 if (pid == getpid())
175 return -EINVAL;
176
177 s->main_pid = pid;
178 s->main_pid_known = true;
179
180 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
181 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
182 UNIT(s)->id, (unsigned long) pid);
183
184 s->main_pid_alien = true;
185 } else
186 s->main_pid_alien = false;
187
188 exec_status_start(&s->main_exec_status, pid);
189
190 return 0;
191}
192
193static void service_close_socket_fd(Service *s) {
194 assert(s);
195
196 if (s->socket_fd < 0)
197 return;
198
199 close_nointr_nofail(s->socket_fd);
200 s->socket_fd = -1;
201}
202
203static void service_connection_unref(Service *s) {
204 assert(s);
205
206 if (!UNIT_DEREF(s->accept_socket))
207 return;
208
209 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
210 unit_ref_unset(&s->accept_socket);
211}
212
213static void service_stop_watchdog(Service *s) {
214 assert(s);
215
216 unit_unwatch_timer(UNIT(s), &s->watchdog_watch);
217 s->watchdog_timestamp.realtime = 0;
218 s->watchdog_timestamp.monotonic = 0;
219}
220
221static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart);
222
223static void service_handle_watchdog(Service *s) {
224 usec_t offset;
225 int r;
226
227 assert(s);
228
229 if (s->watchdog_usec == 0)
230 return;
231
232 offset = now(CLOCK_MONOTONIC) - s->watchdog_timestamp.monotonic;
233 if (offset >= s->watchdog_usec) {
234 log_error("%s watchdog timeout!", UNIT(s)->id);
235 service_enter_dead(s, SERVICE_FAILURE_WATCHDOG, true);
236 return;
237 }
238
239 r = unit_watch_timer(UNIT(s), s->watchdog_usec - offset, &s->watchdog_watch);
240 if (r < 0)
241 log_warning("%s failed to install watchdog timer: %s", UNIT(s)->id, strerror(-r));
242}
243
244static void service_reset_watchdog(Service *s) {
245 assert(s);
246
247 dual_timestamp_get(&s->watchdog_timestamp);
248 service_handle_watchdog(s);
249}
250
251static void service_done(Unit *u) {
252 Service *s = SERVICE(u);
253
254 assert(s);
255
256 free(s->pid_file);
257 s->pid_file = NULL;
258
259#ifdef HAVE_SYSV_COMPAT
260 free(s->sysv_path);
261 s->sysv_path = NULL;
262
263 free(s->sysv_runlevels);
264 s->sysv_runlevels = NULL;
265#endif
266
267 free(s->status_text);
268 s->status_text = NULL;
269
270 exec_context_done(&s->exec_context);
271 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
272 s->control_command = NULL;
273 s->main_command = NULL;
274
275 /* This will leak a process, but at least no memory or any of
276 * our resources */
277 service_unwatch_main_pid(s);
278 service_unwatch_control_pid(s);
279 service_unwatch_pid_file(s);
280
281 if (s->bus_name) {
282 unit_unwatch_bus_name(u, s->bus_name);
283 free(s->bus_name);
284 s->bus_name = NULL;
285 }
286
287 service_close_socket_fd(s);
288 service_connection_unref(s);
289
290 unit_ref_unset(&s->accept_socket);
291
292 service_stop_watchdog(s);
293
294 unit_unwatch_timer(u, &s->timer_watch);
295}
296
297#ifdef HAVE_SYSV_COMPAT
298static char *sysv_translate_name(const char *name) {
299 char *r;
300
301 if (!(r = new(char, strlen(name) + sizeof(".service"))))
302 return NULL;
303
304#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
305 if (endswith(name, ".sh"))
306 /* Drop Debian-style .sh suffix */
307 strcpy(stpcpy(r, name) - 3, ".service");
308#endif
309#ifdef TARGET_SUSE
310 if (startswith(name, "boot."))
311 /* Drop SuSE-style boot. prefix */
312 strcpy(stpcpy(r, name + 5), ".service");
313#endif
314#ifdef TARGET_FRUGALWARE
315 if (startswith(name, "rc."))
316 /* Drop Frugalware-style rc. prefix */
317 strcpy(stpcpy(r, name + 3), ".service");
318#endif
319 else
320 /* Normal init scripts */
321 strcpy(stpcpy(r, name), ".service");
322
323 return r;
324}
325
326static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
327
328 /* We silently ignore the $ prefix here. According to the LSB
329 * spec it simply indicates whether something is a
330 * standardized name or a distribution-specific one. Since we
331 * just follow what already exists and do not introduce new
332 * uses or names we don't care who introduced a new name. */
333
334 static const char * const table[] = {
335 /* LSB defined facilities */
336 "local_fs", SPECIAL_LOCAL_FS_TARGET,
337#if defined(TARGET_MANDRIVA) || defined(TARGET_MAGEIA)
338#else
339 /* Due to unfortunate name selection in Mandriva,
340 * $network is provided by network-up which is ordered
341 * after network which actually starts interfaces.
342 * To break the loop, just ignore it */
343 "network", SPECIAL_NETWORK_TARGET,
344#endif
345 "named", SPECIAL_NSS_LOOKUP_TARGET,
346 "portmap", SPECIAL_RPCBIND_TARGET,
347 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
348 "syslog", SPECIAL_SYSLOG_TARGET,
349 "time", SPECIAL_TIME_SYNC_TARGET,
350
351 /* common extensions */
352 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
353 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
354 "null", NULL,
355
356#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
357 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
358#endif
359
360#ifdef TARGET_FEDORA
361 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
362 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
363 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
364#endif
365
366#ifdef TARGET_SUSE
367 "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
368#endif
369 };
370
371 unsigned i;
372 char *r;
373 const char *n;
374
375 assert(name);
376 assert(_r);
377
378 n = *name == '$' ? name + 1 : name;
379
380 for (i = 0; i < ELEMENTSOF(table); i += 2) {
381
382 if (!streq(table[i], n))
383 continue;
384
385 if (!table[i+1])
386 return 0;
387
388 if (!(r = strdup(table[i+1])))
389 return -ENOMEM;
390
391 goto finish;
392 }
393
394 /* If we don't know this name, fallback heuristics to figure
395 * out whether something is a target or a service alias. */
396
397 if (*name == '$') {
398 if (!unit_prefix_is_valid(n))
399 return -EINVAL;
400
401 /* Facilities starting with $ are most likely targets */
402 r = unit_name_build(n, NULL, ".target");
403 } else if (filename && streq(name, filename))
404 /* Names equaling the file name of the services are redundant */
405 return 0;
406 else
407 /* Everything else we assume to be normal service names */
408 r = sysv_translate_name(n);
409
410 if (!r)
411 return -ENOMEM;
412
413finish:
414 *_r = r;
415
416 return 1;
417}
418
419static int sysv_fix_order(Service *s) {
420 Unit *other;
421 int r;
422
423 assert(s);
424
425 if (s->sysv_start_priority < 0)
426 return 0;
427
428 /* For each pair of services where at least one lacks a LSB
429 * header, we use the start priority value to order things. */
430
431 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
432 Service *t;
433 UnitDependency d;
434 bool special_s, special_t;
435
436 t = SERVICE(other);
437
438 if (s == t)
439 continue;
440
441 if (UNIT(t)->load_state != UNIT_LOADED)
442 continue;
443
444 if (t->sysv_start_priority < 0)
445 continue;
446
447 /* If both units have modern headers we don't care
448 * about the priorities */
449 if ((UNIT(s)->fragment_path || s->sysv_has_lsb) &&
450 (UNIT(t)->fragment_path || t->sysv_has_lsb))
451 continue;
452
453 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
454 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
455
456 if (special_t && !special_s)
457 d = UNIT_AFTER;
458 else if (special_s && !special_t)
459 d = UNIT_BEFORE;
460 else if (t->sysv_start_priority < s->sysv_start_priority)
461 d = UNIT_AFTER;
462 else if (t->sysv_start_priority > s->sysv_start_priority)
463 d = UNIT_BEFORE;
464 else
465 continue;
466
467 /* FIXME: Maybe we should compare the name here lexicographically? */
468
469 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
470 return r;
471 }
472
473 return 0;
474}
475
476static ExecCommand *exec_command_new(const char *path, const char *arg1) {
477 ExecCommand *c;
478
479 if (!(c = new0(ExecCommand, 1)))
480 return NULL;
481
482 if (!(c->path = strdup(path))) {
483 free(c);
484 return NULL;
485 }
486
487 if (!(c->argv = strv_new(path, arg1, NULL))) {
488 free(c->path);
489 free(c);
490 return NULL;
491 }
492
493 return c;
494}
495
496static int sysv_exec_commands(Service *s) {
497 ExecCommand *c;
498
499 assert(s);
500 assert(s->sysv_path);
501
502 if (!(c = exec_command_new(s->sysv_path, "start")))
503 return -ENOMEM;
504 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
505
506 if (!(c = exec_command_new(s->sysv_path, "stop")))
507 return -ENOMEM;
508 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
509
510 if (!(c = exec_command_new(s->sysv_path, "reload")))
511 return -ENOMEM;
512 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
513
514 return 0;
515}
516
517static int service_load_sysv_path(Service *s, const char *path) {
518 FILE *f;
519 Unit *u;
520 unsigned line = 0;
521 int r;
522 enum {
523 NORMAL,
524 DESCRIPTION,
525 LSB,
526 LSB_DESCRIPTION
527 } state = NORMAL;
528 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
529 struct stat st;
530
531 assert(s);
532 assert(path);
533
534 u = UNIT(s);
535
536 if (!(f = fopen(path, "re"))) {
537 r = errno == ENOENT ? 0 : -errno;
538 goto finish;
539 }
540
541 zero(st);
542 if (fstat(fileno(f), &st) < 0) {
543 r = -errno;
544 goto finish;
545 }
546
547 free(s->sysv_path);
548 if (!(s->sysv_path = strdup(path))) {
549 r = -ENOMEM;
550 goto finish;
551 }
552
553 s->sysv_mtime = timespec_load(&st.st_mtim);
554
555 if (null_or_empty(&st)) {
556 u->load_state = UNIT_MASKED;
557 r = 0;
558 goto finish;
559 }
560
561 while (!feof(f)) {
562 char l[LINE_MAX], *t;
563
564 if (!fgets(l, sizeof(l), f)) {
565 if (feof(f))
566 break;
567
568 r = -errno;
569 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
570 goto finish;
571 }
572
573 line++;
574
575 t = strstrip(l);
576 if (*t != '#')
577 continue;
578
579 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
580 state = LSB;
581 s->sysv_has_lsb = true;
582 continue;
583 }
584
585 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
586 state = NORMAL;
587 continue;
588 }
589
590 t++;
591 t += strspn(t, WHITESPACE);
592
593 if (state == NORMAL) {
594
595 /* Try to parse Red Hat style chkconfig headers */
596
597 if (startswith_no_case(t, "chkconfig:")) {
598 int start_priority;
599 char runlevels[16], *k;
600
601 state = NORMAL;
602
603 if (sscanf(t+10, "%15s %i %*i",
604 runlevels,
605 &start_priority) != 2) {
606
607 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
608 continue;
609 }
610
611 /* A start priority gathered from the
612 * symlink farms is preferred over the
613 * data from the LSB header. */
614 if (start_priority < 0 || start_priority > 99)
615 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
616 else
617 s->sysv_start_priority = start_priority;
618
619 char_array_0(runlevels);
620 k = delete_chars(runlevels, WHITESPACE "-");
621
622 if (k[0]) {
623 char *d;
624
625 if (!(d = strdup(k))) {
626 r = -ENOMEM;
627 goto finish;
628 }
629
630 free(s->sysv_runlevels);
631 s->sysv_runlevels = d;
632 }
633
634 } else if (startswith_no_case(t, "description:")) {
635
636 size_t k = strlen(t);
637 char *d;
638 const char *j;
639
640 if (t[k-1] == '\\') {
641 state = DESCRIPTION;
642 t[k-1] = 0;
643 }
644
645 if ((j = strstrip(t+12)) && *j) {
646 if (!(d = strdup(j))) {
647 r = -ENOMEM;
648 goto finish;
649 }
650 } else
651 d = NULL;
652
653 free(chkconfig_description);
654 chkconfig_description = d;
655
656 } else if (startswith_no_case(t, "pidfile:")) {
657
658 char *fn;
659
660 state = NORMAL;
661
662 fn = strstrip(t+8);
663 if (!path_is_absolute(fn)) {
664 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
665 continue;
666 }
667
668 if (!(fn = strdup(fn))) {
669 r = -ENOMEM;
670 goto finish;
671 }
672
673 free(s->pid_file);
674 s->pid_file = fn;
675 }
676
677 } else if (state == DESCRIPTION) {
678
679 /* Try to parse Red Hat style description
680 * continuation */
681
682 size_t k = strlen(t);
683 char *j;
684
685 if (t[k-1] == '\\')
686 t[k-1] = 0;
687 else
688 state = NORMAL;
689
690 if ((j = strstrip(t)) && *j) {
691 char *d = NULL;
692
693 if (chkconfig_description)
694 d = join(chkconfig_description, " ", j, NULL);
695 else
696 d = strdup(j);
697
698 if (!d) {
699 r = -ENOMEM;
700 goto finish;
701 }
702
703 free(chkconfig_description);
704 chkconfig_description = d;
705 }
706
707 } else if (state == LSB || state == LSB_DESCRIPTION) {
708
709 if (startswith_no_case(t, "Provides:")) {
710 char *i, *w;
711 size_t z;
712
713 state = LSB;
714
715 FOREACH_WORD_QUOTED(w, z, t+9, i) {
716 char *n, *m;
717
718 if (!(n = strndup(w, z))) {
719 r = -ENOMEM;
720 goto finish;
721 }
722
723 r = sysv_translate_facility(n, file_name_from_path(path), &m);
724 free(n);
725
726 if (r < 0)
727 goto finish;
728
729 if (r == 0)
730 continue;
731
732 if (unit_name_to_type(m) == UNIT_SERVICE)
733 r = unit_add_name(u, m);
734 else
735 /* NB: SysV targets
736 * which are provided
737 * by a service are
738 * pulled in by the
739 * services, as an
740 * indication that the
741 * generic service is
742 * now available. This
743 * is strictly
744 * one-way. The
745 * targets do NOT pull
746 * in the SysV
747 * services! */
748 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
749
750 if (r < 0)
751 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
752
753 free(m);
754 }
755
756 } else if (startswith_no_case(t, "Required-Start:") ||
757 startswith_no_case(t, "Should-Start:") ||
758 startswith_no_case(t, "X-Start-Before:") ||
759 startswith_no_case(t, "X-Start-After:")) {
760 char *i, *w;
761 size_t z;
762
763 state = LSB;
764
765 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
766 char *n, *m;
767
768 if (!(n = strndup(w, z))) {
769 r = -ENOMEM;
770 goto finish;
771 }
772
773 r = sysv_translate_facility(n, file_name_from_path(path), &m);
774
775 if (r < 0) {
776 log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r));
777 free(n);
778 continue;
779 }
780
781 free(n);
782
783 if (r == 0)
784 continue;
785
786 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
787
788 if (r < 0)
789 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
790
791 free(m);
792 }
793 } else if (startswith_no_case(t, "Default-Start:")) {
794 char *k, *d;
795
796 state = LSB;
797
798 k = delete_chars(t+14, WHITESPACE "-");
799
800 if (k[0] != 0) {
801 if (!(d = strdup(k))) {
802 r = -ENOMEM;
803 goto finish;
804 }
805
806 free(s->sysv_runlevels);
807 s->sysv_runlevels = d;
808 }
809
810 } else if (startswith_no_case(t, "Description:")) {
811 char *d, *j;
812
813 state = LSB_DESCRIPTION;
814
815 if ((j = strstrip(t+12)) && *j) {
816 if (!(d = strdup(j))) {
817 r = -ENOMEM;
818 goto finish;
819 }
820 } else
821 d = NULL;
822
823 free(long_description);
824 long_description = d;
825
826 } else if (startswith_no_case(t, "Short-Description:")) {
827 char *d, *j;
828
829 state = LSB;
830
831 if ((j = strstrip(t+18)) && *j) {
832 if (!(d = strdup(j))) {
833 r = -ENOMEM;
834 goto finish;
835 }
836 } else
837 d = NULL;
838
839 free(short_description);
840 short_description = d;
841
842 } else if (state == LSB_DESCRIPTION) {
843
844 if (startswith(l, "#\t") || startswith(l, "# ")) {
845 char *j;
846
847 if ((j = strstrip(t)) && *j) {
848 char *d = NULL;
849
850 if (long_description)
851 d = join(long_description, " ", t, NULL);
852 else
853 d = strdup(j);
854
855 if (!d) {
856 r = -ENOMEM;
857 goto finish;
858 }
859
860 free(long_description);
861 long_description = d;
862 }
863
864 } else
865 state = LSB;
866 }
867 }
868 }
869
870 if ((r = sysv_exec_commands(s)) < 0)
871 goto finish;
872 if (s->sysv_runlevels &&
873 chars_intersect(RUNLEVELS_BOOT, s->sysv_runlevels) &&
874 chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
875 /* Service has both boot and "up" runlevels
876 configured. Kill the "up" ones. */
877 delete_chars(s->sysv_runlevels, RUNLEVELS_UP);
878 }
879
880 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
881 /* If there a runlevels configured for this service
882 * but none of the standard ones, then we assume this
883 * is some special kind of service (which might be
884 * needed for early boot) and don't create any links
885 * to it. */
886
887 UNIT(s)->default_dependencies = false;
888
889 /* Don't timeout special services during boot (like fsck) */
890 s->timeout_usec = 0;
891 } else
892 s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC;
893
894 /* Special setting for all SysV services */
895 s->type = SERVICE_FORKING;
896 s->remain_after_exit = !s->pid_file;
897 s->guess_main_pid = false;
898 s->restart = SERVICE_RESTART_NO;
899 s->exec_context.ignore_sigpipe = false;
900
901 if (UNIT(s)->manager->sysv_console)
902 s->exec_context.std_output = EXEC_OUTPUT_JOURNAL_AND_CONSOLE;
903
904 s->exec_context.kill_mode = KILL_PROCESS;
905
906 /* We use the long description only if
907 * no short description is set. */
908
909 if (short_description)
910 description = short_description;
911 else if (chkconfig_description)
912 description = chkconfig_description;
913 else if (long_description)
914 description = long_description;
915 else
916 description = NULL;
917
918 if (description) {
919 char *d;
920
921 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
922 r = -ENOMEM;
923 goto finish;
924 }
925
926 u->description = d;
927 }
928
929 /* The priority that has been set in /etc/rcN.d/ hierarchies
930 * takes precedence over what is stored as default in the LSB
931 * header */
932 if (s->sysv_start_priority_from_rcnd >= 0)
933 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
934
935 u->load_state = UNIT_LOADED;
936 r = 0;
937
938finish:
939
940 if (f)
941 fclose(f);
942
943 free(short_description);
944 free(long_description);
945 free(chkconfig_description);
946
947 return r;
948}
949
950static int service_load_sysv_name(Service *s, const char *name) {
951 char **p;
952
953 assert(s);
954 assert(name);
955
956 /* For SysV services we strip the boot.*, rc.* and *.sh
957 * prefixes/suffixes. */
958#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
959 if (endswith(name, ".sh.service"))
960 return -ENOENT;
961#endif
962
963#ifdef TARGET_SUSE
964 if (startswith(name, "boot."))
965 return -ENOENT;
966#endif
967
968#ifdef TARGET_FRUGALWARE
969 if (startswith(name, "rc."))
970 return -ENOENT;
971#endif
972
973 STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
974 char *path;
975 int r;
976
977 path = join(*p, "/", name, NULL);
978 if (!path)
979 return -ENOMEM;
980
981 assert(endswith(path, ".service"));
982 path[strlen(path)-8] = 0;
983
984 r = service_load_sysv_path(s, path);
985
986#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
987 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
988 /* Try Debian style *.sh source'able init scripts */
989 strcat(path, ".sh");
990 r = service_load_sysv_path(s, path);
991 }
992#endif
993 free(path);
994
995#ifdef TARGET_SUSE
996 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
997 /* Try SUSE style boot.* init scripts */
998
999 path = join(*p, "/boot.", name, NULL);
1000 if (!path)
1001 return -ENOMEM;
1002
1003 /* Drop .service suffix */
1004 path[strlen(path)-8] = 0;
1005 r = service_load_sysv_path(s, path);
1006 free(path);
1007 }
1008#endif
1009
1010#ifdef TARGET_FRUGALWARE
1011 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1012 /* Try Frugalware style rc.* init scripts */
1013
1014 path = join(*p, "/rc.", name, NULL);
1015 if (!path)
1016 return -ENOMEM;
1017
1018 /* Drop .service suffix */
1019 path[strlen(path)-8] = 0;
1020 r = service_load_sysv_path(s, path);
1021 free(path);
1022 }
1023#endif
1024
1025 if (r < 0)
1026 return r;
1027
1028 if ((UNIT(s)->load_state != UNIT_STUB))
1029 break;
1030 }
1031
1032 return 0;
1033}
1034
1035static int service_load_sysv(Service *s) {
1036 const char *t;
1037 Iterator i;
1038 int r;
1039
1040 assert(s);
1041
1042 /* Load service data from SysV init scripts, preferably with
1043 * LSB headers ... */
1044
1045 if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
1046 return 0;
1047
1048 if ((t = UNIT(s)->id))
1049 if ((r = service_load_sysv_name(s, t)) < 0)
1050 return r;
1051
1052 if (UNIT(s)->load_state == UNIT_STUB)
1053 SET_FOREACH(t, UNIT(s)->names, i) {
1054 if (t == UNIT(s)->id)
1055 continue;
1056
1057 if ((r = service_load_sysv_name(s, t)) < 0)
1058 return r;
1059
1060 if (UNIT(s)->load_state != UNIT_STUB)
1061 break;
1062 }
1063
1064 return 0;
1065}
1066#endif
1067
1068static int fsck_fix_order(Service *s) {
1069 Unit *other;
1070 int r;
1071
1072 assert(s);
1073
1074 if (s->fsck_passno <= 0)
1075 return 0;
1076
1077 /* For each pair of services where both have an fsck priority
1078 * we order things based on it. */
1079
1080 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
1081 Service *t;
1082 UnitDependency d;
1083
1084 t = SERVICE(other);
1085
1086 if (s == t)
1087 continue;
1088
1089 if (UNIT(t)->load_state != UNIT_LOADED)
1090 continue;
1091
1092 if (t->fsck_passno <= 0)
1093 continue;
1094
1095 if (t->fsck_passno < s->fsck_passno)
1096 d = UNIT_AFTER;
1097 else if (t->fsck_passno > s->fsck_passno)
1098 d = UNIT_BEFORE;
1099 else
1100 continue;
1101
1102 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
1103 return r;
1104 }
1105
1106 return 0;
1107}
1108
1109static int service_verify(Service *s) {
1110 assert(s);
1111
1112 if (UNIT(s)->load_state != UNIT_LOADED)
1113 return 0;
1114
1115 if (!s->exec_command[SERVICE_EXEC_START]) {
1116 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
1117 return -EINVAL;
1118 }
1119
1120 if (s->type != SERVICE_ONESHOT &&
1121 s->exec_command[SERVICE_EXEC_START]->command_next) {
1122 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1123 return -EINVAL;
1124 }
1125
1126 if (s->type == SERVICE_ONESHOT &&
1127 s->exec_command[SERVICE_EXEC_RELOAD]) {
1128 log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1129 return -EINVAL;
1130 }
1131
1132 if (s->type == SERVICE_DBUS && !s->bus_name) {
1133 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id);
1134 return -EINVAL;
1135 }
1136
1137 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
1138 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
1139 return -EINVAL;
1140 }
1141
1142 return 0;
1143}
1144
1145static int service_add_default_dependencies(Service *s) {
1146 int r;
1147
1148 assert(s);
1149
1150 /* Add a number of automatic dependencies useful for the
1151 * majority of services. */
1152
1153 /* First, pull in base system */
1154 if (UNIT(s)->manager->running_as == MANAGER_SYSTEM) {
1155
1156 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1157 return r;
1158
1159 } else if (UNIT(s)->manager->running_as == MANAGER_USER) {
1160
1161 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1162 return r;
1163 }
1164
1165 /* Second, activate normal shutdown */
1166 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1167}
1168
1169static void service_fix_output(Service *s) {
1170 assert(s);
1171
1172 /* If nothing has been explicitly configured, patch default
1173 * output in. If input is socket/tty we avoid this however,
1174 * since in that case we want output to default to the same
1175 * place as we read input from. */
1176
1177 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1178 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1179 s->exec_context.std_input == EXEC_INPUT_NULL)
1180 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
1181
1182 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1183 s->exec_context.std_input == EXEC_INPUT_NULL)
1184 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
1185}
1186
1187static int service_load(Unit *u) {
1188 int r;
1189 Service *s = SERVICE(u);
1190
1191 assert(s);
1192
1193 /* Load a .service file */
1194 if ((r = unit_load_fragment(u)) < 0)
1195 return r;
1196
1197#ifdef HAVE_SYSV_COMPAT
1198 /* Load a classic init script as a fallback, if we couldn't find anything */
1199 if (u->load_state == UNIT_STUB)
1200 if ((r = service_load_sysv(s)) < 0)
1201 return r;
1202#endif
1203
1204 /* Still nothing found? Then let's give up */
1205 if (u->load_state == UNIT_STUB)
1206 return -ENOENT;
1207
1208 /* We were able to load something, then let's add in the
1209 * dropin directories. */
1210 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1211 return r;
1212
1213 /* This is a new unit? Then let's add in some extras */
1214 if (u->load_state == UNIT_LOADED) {
1215 service_fix_output(s);
1216
1217 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1218 return r;
1219
1220 if ((r = unit_add_default_cgroups(u)) < 0)
1221 return r;
1222
1223#ifdef HAVE_SYSV_COMPAT
1224 if ((r = sysv_fix_order(s)) < 0)
1225 return r;
1226#endif
1227
1228 if ((r = fsck_fix_order(s)) < 0)
1229 return r;
1230
1231 if (s->bus_name)
1232 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1233 return r;
1234
1235 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1236 s->notify_access = NOTIFY_MAIN;
1237
1238 if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
1239 s->notify_access = NOTIFY_MAIN;
1240
1241 if (s->type == SERVICE_DBUS || s->bus_name)
1242 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
1243 return r;
1244
1245 if (UNIT(s)->default_dependencies)
1246 if ((r = service_add_default_dependencies(s)) < 0)
1247 return r;
1248 }
1249
1250 return service_verify(s);
1251}
1252
1253static void service_dump(Unit *u, FILE *f, const char *prefix) {
1254
1255 ServiceExecCommand c;
1256 Service *s = SERVICE(u);
1257 const char *prefix2;
1258 char *p2;
1259
1260 assert(s);
1261
1262 p2 = strappend(prefix, "\t");
1263 prefix2 = p2 ? p2 : prefix;
1264
1265 fprintf(f,
1266 "%sService State: %s\n"
1267 "%sResult: %s\n"
1268 "%sReload Result: %s\n"
1269 "%sPermissionsStartOnly: %s\n"
1270 "%sRootDirectoryStartOnly: %s\n"
1271 "%sRemainAfterExit: %s\n"
1272 "%sGuessMainPID: %s\n"
1273 "%sType: %s\n"
1274 "%sRestart: %s\n"
1275 "%sNotifyAccess: %s\n",
1276 prefix, service_state_to_string(s->state),
1277 prefix, service_result_to_string(s->result),
1278 prefix, service_result_to_string(s->reload_result),
1279 prefix, yes_no(s->permissions_start_only),
1280 prefix, yes_no(s->root_directory_start_only),
1281 prefix, yes_no(s->remain_after_exit),
1282 prefix, yes_no(s->guess_main_pid),
1283 prefix, service_type_to_string(s->type),
1284 prefix, service_restart_to_string(s->restart),
1285 prefix, notify_access_to_string(s->notify_access));
1286
1287 if (s->control_pid > 0)
1288 fprintf(f,
1289 "%sControl PID: %lu\n",
1290 prefix, (unsigned long) s->control_pid);
1291
1292 if (s->main_pid > 0)
1293 fprintf(f,
1294 "%sMain PID: %lu\n"
1295 "%sMain PID Known: %s\n"
1296 "%sMain PID Alien: %s\n",
1297 prefix, (unsigned long) s->main_pid,
1298 prefix, yes_no(s->main_pid_known),
1299 prefix, yes_no(s->main_pid_alien));
1300
1301 if (s->pid_file)
1302 fprintf(f,
1303 "%sPIDFile: %s\n",
1304 prefix, s->pid_file);
1305
1306 if (s->bus_name)
1307 fprintf(f,
1308 "%sBusName: %s\n"
1309 "%sBus Name Good: %s\n",
1310 prefix, s->bus_name,
1311 prefix, yes_no(s->bus_name_good));
1312
1313 exec_context_dump(&s->exec_context, f, prefix);
1314
1315 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1316
1317 if (!s->exec_command[c])
1318 continue;
1319
1320 fprintf(f, "%s-> %s:\n",
1321 prefix, service_exec_command_to_string(c));
1322
1323 exec_command_dump_list(s->exec_command[c], f, prefix2);
1324 }
1325
1326#ifdef HAVE_SYSV_COMPAT
1327 if (s->sysv_path)
1328 fprintf(f,
1329 "%sSysV Init Script Path: %s\n"
1330 "%sSysV Init Script has LSB Header: %s\n"
1331 "%sSysVEnabled: %s\n",
1332 prefix, s->sysv_path,
1333 prefix, yes_no(s->sysv_has_lsb),
1334 prefix, yes_no(s->sysv_enabled));
1335
1336 if (s->sysv_start_priority >= 0)
1337 fprintf(f,
1338 "%sSysVStartPriority: %i\n",
1339 prefix, s->sysv_start_priority);
1340
1341 if (s->sysv_runlevels)
1342 fprintf(f, "%sSysVRunLevels: %s\n",
1343 prefix, s->sysv_runlevels);
1344#endif
1345
1346 if (s->fsck_passno > 0)
1347 fprintf(f,
1348 "%sFsckPassNo: %i\n",
1349 prefix, s->fsck_passno);
1350
1351 if (s->status_text)
1352 fprintf(f, "%sStatus Text: %s\n",
1353 prefix, s->status_text);
1354
1355 free(p2);
1356}
1357
1358static int service_load_pid_file(Service *s, bool may_warn) {
1359 char *k;
1360 int r;
1361 pid_t pid;
1362
1363 assert(s);
1364
1365 if (!s->pid_file)
1366 return -ENOENT;
1367
1368 if ((r = read_one_line_file(s->pid_file, &k)) < 0) {
1369 if (may_warn)
1370 log_info("PID file %s not readable (yet?) after %s.",
1371 s->pid_file, service_state_to_string(s->state));
1372 return r;
1373 }
1374
1375 r = parse_pid(k, &pid);
1376 free(k);
1377
1378 if (r < 0)
1379 return r;
1380
1381 if (kill(pid, 0) < 0 && errno != EPERM) {
1382 if (may_warn)
1383 log_info("PID %lu read from file %s does not exist.",
1384 (unsigned long) pid, s->pid_file);
1385 return -ESRCH;
1386 }
1387
1388 if (s->main_pid_known) {
1389 if (pid == s->main_pid)
1390 return 0;
1391
1392 log_debug("Main PID changing: %lu -> %lu",
1393 (unsigned long) s->main_pid, (unsigned long) pid);
1394 service_unwatch_main_pid(s);
1395 s->main_pid_known = false;
1396 } else
1397 log_debug("Main PID loaded: %lu", (unsigned long) pid);
1398
1399 if ((r = service_set_main_pid(s, pid)) < 0)
1400 return r;
1401
1402 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1403 /* FIXME: we need to do something here */
1404 return r;
1405
1406 return 0;
1407}
1408
1409static int service_search_main_pid(Service *s) {
1410 pid_t pid;
1411 int r;
1412
1413 assert(s);
1414
1415 /* If we know it anyway, don't ever fallback to unreliable
1416 * heuristics */
1417 if (s->main_pid_known)
1418 return 0;
1419
1420 if (!s->guess_main_pid)
1421 return 0;
1422
1423 assert(s->main_pid <= 0);
1424
1425 if ((pid = cgroup_bonding_search_main_pid_list(UNIT(s)->cgroup_bondings)) <= 0)
1426 return -ENOENT;
1427
1428 log_debug("Main PID guessed: %lu", (unsigned long) pid);
1429 if ((r = service_set_main_pid(s, pid)) < 0)
1430 return r;
1431
1432 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1433 /* FIXME: we need to do something here */
1434 return r;
1435
1436 return 0;
1437}
1438
1439static void service_notify_sockets_dead(Service *s) {
1440 Iterator i;
1441 Unit *u;
1442
1443 assert(s);
1444
1445 /* Notifies all our sockets when we die */
1446
1447 if (s->socket_fd >= 0)
1448 return;
1449
1450 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i)
1451 if (u->type == UNIT_SOCKET)
1452 socket_notify_service_dead(SOCKET(u));
1453
1454 return;
1455}
1456
1457static void service_set_state(Service *s, ServiceState state) {
1458 ServiceState old_state;
1459 assert(s);
1460
1461 old_state = s->state;
1462 s->state = state;
1463
1464 service_unwatch_pid_file(s);
1465
1466 if (state != SERVICE_START_PRE &&
1467 state != SERVICE_START &&
1468 state != SERVICE_START_POST &&
1469 state != SERVICE_RELOAD &&
1470 state != SERVICE_STOP &&
1471 state != SERVICE_STOP_SIGTERM &&
1472 state != SERVICE_STOP_SIGKILL &&
1473 state != SERVICE_STOP_POST &&
1474 state != SERVICE_FINAL_SIGTERM &&
1475 state != SERVICE_FINAL_SIGKILL &&
1476 state != SERVICE_AUTO_RESTART)
1477 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1478
1479 if (state != SERVICE_START &&
1480 state != SERVICE_START_POST &&
1481 state != SERVICE_RUNNING &&
1482 state != SERVICE_RELOAD &&
1483 state != SERVICE_STOP &&
1484 state != SERVICE_STOP_SIGTERM &&
1485 state != SERVICE_STOP_SIGKILL) {
1486 service_unwatch_main_pid(s);
1487 s->main_command = NULL;
1488 }
1489
1490 if (state != SERVICE_START_PRE &&
1491 state != SERVICE_START &&
1492 state != SERVICE_START_POST &&
1493 state != SERVICE_RELOAD &&
1494 state != SERVICE_STOP &&
1495 state != SERVICE_STOP_SIGTERM &&
1496 state != SERVICE_STOP_SIGKILL &&
1497 state != SERVICE_STOP_POST &&
1498 state != SERVICE_FINAL_SIGTERM &&
1499 state != SERVICE_FINAL_SIGKILL) {
1500 service_unwatch_control_pid(s);
1501 s->control_command = NULL;
1502 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1503 }
1504
1505 if (state == SERVICE_DEAD ||
1506 state == SERVICE_STOP ||
1507 state == SERVICE_STOP_SIGTERM ||
1508 state == SERVICE_STOP_SIGKILL ||
1509 state == SERVICE_STOP_POST ||
1510 state == SERVICE_FINAL_SIGTERM ||
1511 state == SERVICE_FINAL_SIGKILL ||
1512 state == SERVICE_FAILED ||
1513 state == SERVICE_AUTO_RESTART)
1514 service_notify_sockets_dead(s);
1515
1516 if (state != SERVICE_START_PRE &&
1517 state != SERVICE_START &&
1518 state != SERVICE_START_POST &&
1519 state != SERVICE_RUNNING &&
1520 state != SERVICE_RELOAD &&
1521 state != SERVICE_STOP &&
1522 state != SERVICE_STOP_SIGTERM &&
1523 state != SERVICE_STOP_SIGKILL &&
1524 state != SERVICE_STOP_POST &&
1525 state != SERVICE_FINAL_SIGTERM &&
1526 state != SERVICE_FINAL_SIGKILL &&
1527 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1528 service_close_socket_fd(s);
1529 service_connection_unref(s);
1530 }
1531
1532 if (state == SERVICE_STOP)
1533 service_stop_watchdog(s);
1534
1535 /* For the inactive states unit_notify() will trim the cgroup,
1536 * but for exit we have to do that ourselves... */
1537 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1538 cgroup_bonding_trim_list(UNIT(s)->cgroup_bondings, true);
1539
1540 if (old_state != state)
1541 log_debug("%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state));
1542
1543 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], s->reload_result == SERVICE_SUCCESS);
1544 s->reload_result = SERVICE_SUCCESS;
1545}
1546
1547static int service_coldplug(Unit *u) {
1548 Service *s = SERVICE(u);
1549 int r;
1550
1551 assert(s);
1552 assert(s->state == SERVICE_DEAD);
1553
1554 if (s->deserialized_state != s->state) {
1555
1556 if (s->deserialized_state == SERVICE_START_PRE ||
1557 s->deserialized_state == SERVICE_START ||
1558 s->deserialized_state == SERVICE_START_POST ||
1559 s->deserialized_state == SERVICE_RELOAD ||
1560 s->deserialized_state == SERVICE_STOP ||
1561 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1562 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1563 s->deserialized_state == SERVICE_STOP_POST ||
1564 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1565 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1566 s->deserialized_state == SERVICE_AUTO_RESTART) {
1567
1568 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1569 usec_t k;
1570
1571 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1572
1573 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1574 return r;
1575 }
1576 }
1577
1578 if ((s->deserialized_state == SERVICE_START &&
1579 (s->type == SERVICE_FORKING ||
1580 s->type == SERVICE_DBUS ||
1581 s->type == SERVICE_ONESHOT ||
1582 s->type == SERVICE_NOTIFY)) ||
1583 s->deserialized_state == SERVICE_START_POST ||
1584 s->deserialized_state == SERVICE_RUNNING ||
1585 s->deserialized_state == SERVICE_RELOAD ||
1586 s->deserialized_state == SERVICE_STOP ||
1587 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1588 s->deserialized_state == SERVICE_STOP_SIGKILL)
1589 if (s->main_pid > 0)
1590 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1591 return r;
1592
1593 if (s->deserialized_state == SERVICE_START_PRE ||
1594 s->deserialized_state == SERVICE_START ||
1595 s->deserialized_state == SERVICE_START_POST ||
1596 s->deserialized_state == SERVICE_RELOAD ||
1597 s->deserialized_state == SERVICE_STOP ||
1598 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1599 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1600 s->deserialized_state == SERVICE_STOP_POST ||
1601 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1602 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1603 if (s->control_pid > 0)
1604 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1605 return r;
1606
1607 if (s->deserialized_state == SERVICE_START_POST ||
1608 s->deserialized_state == SERVICE_RUNNING)
1609 service_handle_watchdog(s);
1610
1611 service_set_state(s, s->deserialized_state);
1612 }
1613 return 0;
1614}
1615
1616static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1617 Iterator i;
1618 int r;
1619 int *rfds = NULL;
1620 unsigned rn_fds = 0;
1621 Unit *u;
1622
1623 assert(s);
1624 assert(fds);
1625 assert(n_fds);
1626
1627 if (s->socket_fd >= 0)
1628 return 0;
1629
1630 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1631 int *cfds;
1632 unsigned cn_fds;
1633 Socket *sock;
1634
1635 if (u->type != UNIT_SOCKET)
1636 continue;
1637
1638 sock = SOCKET(u);
1639
1640 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1641 goto fail;
1642
1643 if (!cfds)
1644 continue;
1645
1646 if (!rfds) {
1647 rfds = cfds;
1648 rn_fds = cn_fds;
1649 } else {
1650 int *t;
1651
1652 if (!(t = new(int, rn_fds+cn_fds))) {
1653 free(cfds);
1654 r = -ENOMEM;
1655 goto fail;
1656 }
1657
1658 memcpy(t, rfds, rn_fds * sizeof(int));
1659 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1660 free(rfds);
1661 free(cfds);
1662
1663 rfds = t;
1664 rn_fds = rn_fds+cn_fds;
1665 }
1666 }
1667
1668 *fds = rfds;
1669 *n_fds = rn_fds;
1670
1671 return 0;
1672
1673fail:
1674 free(rfds);
1675
1676 return r;
1677}
1678
1679static int service_spawn(
1680 Service *s,
1681 ExecCommand *c,
1682 bool timeout,
1683 bool pass_fds,
1684 bool apply_permissions,
1685 bool apply_chroot,
1686 bool apply_tty_stdin,
1687 bool set_notify_socket,
1688 pid_t *_pid) {
1689
1690 pid_t pid;
1691 int r;
1692 int *fds = NULL, *fdsbuf = NULL;
1693 unsigned n_fds = 0, n_env = 0;
1694 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1695
1696 assert(s);
1697 assert(c);
1698 assert(_pid);
1699
1700 if (pass_fds ||
1701 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1702 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1703 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1704
1705 if (s->socket_fd >= 0) {
1706 fds = &s->socket_fd;
1707 n_fds = 1;
1708 } else {
1709 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1710 goto fail;
1711
1712 fds = fdsbuf;
1713 }
1714 }
1715
1716 if (timeout && s->timeout_usec) {
1717 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1718 goto fail;
1719 } else
1720 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1721
1722 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1723 r = -ENOMEM;
1724 goto fail;
1725 }
1726
1727 if (!(our_env = new0(char*, 4))) {
1728 r = -ENOMEM;
1729 goto fail;
1730 }
1731
1732 if (set_notify_socket)
1733 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1734 r = -ENOMEM;
1735 goto fail;
1736 }
1737
1738 if (s->main_pid > 0)
1739 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1740 r = -ENOMEM;
1741 goto fail;
1742 }
1743
1744 if (s->watchdog_usec > 0)
1745 if (asprintf(our_env + n_env++, "WATCHDOG_USEC=%llu", (unsigned long long) s->watchdog_usec) < 0) {
1746 r = -ENOMEM;
1747 goto fail;
1748 }
1749
1750 if (!(final_env = strv_env_merge(2,
1751 UNIT(s)->manager->environment,
1752 our_env,
1753 NULL))) {
1754 r = -ENOMEM;
1755 goto fail;
1756 }
1757
1758 r = exec_spawn(c,
1759 argv,
1760 &s->exec_context,
1761 fds, n_fds,
1762 final_env,
1763 apply_permissions,
1764 apply_chroot,
1765 apply_tty_stdin,
1766 UNIT(s)->manager->confirm_spawn,
1767 UNIT(s)->cgroup_bondings,
1768 UNIT(s)->cgroup_attributes,
1769 &pid);
1770
1771 if (r < 0)
1772 goto fail;
1773
1774
1775 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1776 /* FIXME: we need to do something here */
1777 goto fail;
1778
1779 free(fdsbuf);
1780 strv_free(argv);
1781 strv_free(our_env);
1782 strv_free(final_env);
1783
1784 *_pid = pid;
1785
1786 return 0;
1787
1788fail:
1789 free(fdsbuf);
1790 strv_free(argv);
1791 strv_free(our_env);
1792 strv_free(final_env);
1793
1794 if (timeout)
1795 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1796
1797 return r;
1798}
1799
1800static int main_pid_good(Service *s) {
1801 assert(s);
1802
1803 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1804 * don't know */
1805
1806 /* If we know the pid file, then lets just check if it is
1807 * still valid */
1808 if (s->main_pid_known) {
1809
1810 /* If it's an alien child let's check if it is still
1811 * alive ... */
1812 if (s->main_pid_alien)
1813 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1814
1815 /* .. otherwise assume we'll get a SIGCHLD for it,
1816 * which we really should wait for to collect exit
1817 * status and code */
1818 return s->main_pid > 0;
1819 }
1820
1821 /* We don't know the pid */
1822 return -EAGAIN;
1823}
1824
1825static int control_pid_good(Service *s) {
1826 assert(s);
1827
1828 return s->control_pid > 0;
1829}
1830
1831static int cgroup_good(Service *s) {
1832 int r;
1833
1834 assert(s);
1835
1836 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->cgroup_bondings)) < 0)
1837 return r;
1838
1839 return !r;
1840}
1841
1842static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1843 int r;
1844 assert(s);
1845
1846 if (f != SERVICE_SUCCESS)
1847 s->result = f;
1848
1849 if (allow_restart &&
1850 !s->forbid_restart &&
1851 (s->restart == SERVICE_RESTART_ALWAYS ||
1852 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1853 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1854 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1855 s->result == SERVICE_FAILURE_CORE_DUMP)))) {
1856
1857 r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch);
1858 if (r < 0)
1859 goto fail;
1860
1861 service_set_state(s, SERVICE_AUTO_RESTART);
1862 } else
1863 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1864
1865 s->forbid_restart = false;
1866
1867 return;
1868
1869fail:
1870 log_warning("%s failed to run install restart timer: %s", UNIT(s)->id, strerror(-r));
1871 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1872}
1873
1874static void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
1875
1876static void service_enter_stop_post(Service *s, ServiceResult f) {
1877 int r;
1878 assert(s);
1879
1880 if (f != SERVICE_SUCCESS)
1881 s->result = f;
1882
1883 service_unwatch_control_pid(s);
1884
1885 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1886 s->control_command_id = SERVICE_EXEC_STOP_POST;
1887
1888 if ((r = service_spawn(s,
1889 s->control_command,
1890 true,
1891 false,
1892 !s->permissions_start_only,
1893 !s->root_directory_start_only,
1894 true,
1895 false,
1896 &s->control_pid)) < 0)
1897 goto fail;
1898
1899
1900 service_set_state(s, SERVICE_STOP_POST);
1901 } else
1902 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
1903
1904 return;
1905
1906fail:
1907 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r));
1908 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1909}
1910
1911static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1912 int r;
1913 Set *pid_set = NULL;
1914 bool wait_for_exit = false;
1915
1916 assert(s);
1917
1918 if (f != SERVICE_SUCCESS)
1919 s->result = f;
1920
1921 if (s->exec_context.kill_mode != KILL_NONE) {
1922 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1923
1924 if (s->main_pid > 0) {
1925 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
1926 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1927 else
1928 wait_for_exit = !s->main_pid_alien;
1929 }
1930
1931 if (s->control_pid > 0) {
1932 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1933 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1934 else
1935 wait_for_exit = true;
1936 }
1937
1938 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1939
1940 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1941 r = -ENOMEM;
1942 goto fail;
1943 }
1944
1945 /* Exclude the main/control pids from being killed via the cgroup */
1946 if (s->main_pid > 0)
1947 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1948 goto fail;
1949
1950 if (s->control_pid > 0)
1951 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1952 goto fail;
1953
1954 if ((r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, pid_set)) < 0) {
1955 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1956 log_warning("Failed to kill control group: %s", strerror(-r));
1957 } else if (r > 0)
1958 wait_for_exit = true;
1959
1960 set_free(pid_set);
1961 pid_set = NULL;
1962 }
1963 }
1964
1965 if (wait_for_exit) {
1966 if (s->timeout_usec > 0)
1967 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1968 goto fail;
1969
1970 service_set_state(s, state);
1971 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1972 service_enter_stop_post(s, SERVICE_SUCCESS);
1973 else
1974 service_enter_dead(s, SERVICE_SUCCESS, true);
1975
1976 return;
1977
1978fail:
1979 log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
1980
1981 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1982 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
1983 else
1984 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
1985
1986 if (pid_set)
1987 set_free(pid_set);
1988}
1989
1990static void service_enter_stop(Service *s, ServiceResult f) {
1991 int r;
1992
1993 assert(s);
1994
1995 if (f != SERVICE_SUCCESS)
1996 s->result = f;
1997
1998 service_unwatch_control_pid(s);
1999
2000 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
2001 s->control_command_id = SERVICE_EXEC_STOP;
2002
2003 if ((r = service_spawn(s,
2004 s->control_command,
2005 true,
2006 false,
2007 !s->permissions_start_only,
2008 !s->root_directory_start_only,
2009 false,
2010 false,
2011 &s->control_pid)) < 0)
2012 goto fail;
2013
2014 service_set_state(s, SERVICE_STOP);
2015 } else
2016 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2017
2018 return;
2019
2020fail:
2021 log_warning("%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2022 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2023}
2024
2025static void service_enter_running(Service *s, ServiceResult f) {
2026 int main_pid_ok, cgroup_ok;
2027 assert(s);
2028
2029 if (f != SERVICE_SUCCESS)
2030 s->result = f;
2031
2032 main_pid_ok = main_pid_good(s);
2033 cgroup_ok = cgroup_good(s);
2034
2035 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2036 (s->bus_name_good || s->type != SERVICE_DBUS))
2037 service_set_state(s, SERVICE_RUNNING);
2038 else if (s->remain_after_exit)
2039 service_set_state(s, SERVICE_EXITED);
2040 else
2041 service_enter_stop(s, SERVICE_SUCCESS);
2042}
2043
2044static void service_enter_start_post(Service *s) {
2045 int r;
2046 assert(s);
2047
2048 service_unwatch_control_pid(s);
2049
2050 if (s->watchdog_usec > 0)
2051 service_reset_watchdog(s);
2052
2053 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
2054 s->control_command_id = SERVICE_EXEC_START_POST;
2055
2056 if ((r = service_spawn(s,
2057 s->control_command,
2058 true,
2059 false,
2060 !s->permissions_start_only,
2061 !s->root_directory_start_only,
2062 false,
2063 false,
2064 &s->control_pid)) < 0)
2065 goto fail;
2066
2067 service_set_state(s, SERVICE_START_POST);
2068 } else
2069 service_enter_running(s, SERVICE_SUCCESS);
2070
2071 return;
2072
2073fail:
2074 log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2075 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2076}
2077
2078static void service_enter_start(Service *s) {
2079 pid_t pid;
2080 int r;
2081 ExecCommand *c;
2082
2083 assert(s);
2084
2085 assert(s->exec_command[SERVICE_EXEC_START]);
2086 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2087
2088 if (s->type == SERVICE_FORKING)
2089 service_unwatch_control_pid(s);
2090 else
2091 service_unwatch_main_pid(s);
2092
2093 /* We want to ensure that nobody leaks processes from
2094 * START_PRE here, so let's go on a killing spree, People
2095 * should not spawn long running processes from START_PRE. */
2096 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, NULL);
2097
2098 if (s->type == SERVICE_FORKING) {
2099 s->control_command_id = SERVICE_EXEC_START;
2100 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2101
2102 s->main_command = NULL;
2103 } else {
2104 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2105 s->control_command = NULL;
2106
2107 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2108 }
2109
2110 if ((r = service_spawn(s,
2111 c,
2112 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
2113 true,
2114 true,
2115 true,
2116 true,
2117 s->notify_access != NOTIFY_NONE,
2118 &pid)) < 0)
2119 goto fail;
2120
2121 if (s->type == SERVICE_SIMPLE) {
2122 /* For simple services we immediately start
2123 * the START_POST binaries. */
2124
2125 service_set_main_pid(s, pid);
2126 service_enter_start_post(s);
2127
2128 } else if (s->type == SERVICE_FORKING) {
2129
2130 /* For forking services we wait until the start
2131 * process exited. */
2132
2133 s->control_pid = pid;
2134 service_set_state(s, SERVICE_START);
2135
2136 } else if (s->type == SERVICE_ONESHOT ||
2137 s->type == SERVICE_DBUS ||
2138 s->type == SERVICE_NOTIFY) {
2139
2140 /* For oneshot services we wait until the start
2141 * process exited, too, but it is our main process. */
2142
2143 /* For D-Bus services we know the main pid right away,
2144 * but wait for the bus name to appear on the
2145 * bus. Notify services are similar. */
2146
2147 service_set_main_pid(s, pid);
2148 service_set_state(s, SERVICE_START);
2149 } else
2150 assert_not_reached("Unknown service type");
2151
2152 return;
2153
2154fail:
2155 log_warning("%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2156 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2157}
2158
2159static void service_enter_start_pre(Service *s) {
2160 int r;
2161
2162 assert(s);
2163
2164 service_unwatch_control_pid(s);
2165
2166 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2167
2168 /* Before we start anything, let's clear up what might
2169 * be left from previous runs. */
2170 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, NULL);
2171
2172 s->control_command_id = SERVICE_EXEC_START_PRE;
2173
2174 if ((r = service_spawn(s,
2175 s->control_command,
2176 true,
2177 false,
2178 !s->permissions_start_only,
2179 !s->root_directory_start_only,
2180 true,
2181 false,
2182 &s->control_pid)) < 0)
2183 goto fail;
2184
2185 service_set_state(s, SERVICE_START_PRE);
2186 } else
2187 service_enter_start(s);
2188
2189 return;
2190
2191fail:
2192 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2193 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2194}
2195
2196static void service_enter_restart(Service *s) {
2197 int r;
2198 DBusError error;
2199
2200 assert(s);
2201 dbus_error_init(&error);
2202
2203 if (UNIT(s)->job) {
2204 log_info("Job pending for unit, delaying automatic restart.");
2205
2206 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2207 goto fail;
2208 }
2209
2210 service_enter_dead(s, SERVICE_SUCCESS, false);
2211
2212 if ((r = manager_add_job(UNIT(s)->manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
2213 goto fail;
2214
2215 log_debug("%s scheduled restart job.", UNIT(s)->id);
2216 return;
2217
2218fail:
2219 log_warning("%s failed to schedule restart job: %s", UNIT(s)->id, bus_error(&error, -r));
2220 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2221
2222 dbus_error_free(&error);
2223}
2224
2225static void service_enter_reload(Service *s) {
2226 int r;
2227
2228 assert(s);
2229
2230 service_unwatch_control_pid(s);
2231
2232 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2233 s->control_command_id = SERVICE_EXEC_RELOAD;
2234
2235 if ((r = service_spawn(s,
2236 s->control_command,
2237 true,
2238 false,
2239 !s->permissions_start_only,
2240 !s->root_directory_start_only,
2241 false,
2242 false,
2243 &s->control_pid)) < 0)
2244 goto fail;
2245
2246 service_set_state(s, SERVICE_RELOAD);
2247 } else
2248 service_enter_running(s, SERVICE_SUCCESS);
2249
2250 return;
2251
2252fail:
2253 log_warning("%s failed to run 'reload' task: %s", UNIT(s)->id, strerror(-r));
2254 s->reload_result = SERVICE_FAILURE_RESOURCES;
2255 service_enter_running(s, SERVICE_SUCCESS);
2256}
2257
2258static void service_run_next_control(Service *s) {
2259 int r;
2260
2261 assert(s);
2262 assert(s->control_command);
2263 assert(s->control_command->command_next);
2264
2265 assert(s->control_command_id != SERVICE_EXEC_START);
2266
2267 s->control_command = s->control_command->command_next;
2268 service_unwatch_control_pid(s);
2269
2270 if ((r = service_spawn(s,
2271 s->control_command,
2272 true,
2273 false,
2274 !s->permissions_start_only,
2275 !s->root_directory_start_only,
2276 s->control_command_id == SERVICE_EXEC_START_PRE ||
2277 s->control_command_id == SERVICE_EXEC_STOP_POST,
2278 false,
2279 &s->control_pid)) < 0)
2280 goto fail;
2281
2282 return;
2283
2284fail:
2285 log_warning("%s failed to run next control task: %s", UNIT(s)->id, strerror(-r));
2286
2287 if (s->state == SERVICE_START_PRE)
2288 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2289 else if (s->state == SERVICE_STOP)
2290 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2291 else if (s->state == SERVICE_STOP_POST)
2292 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2293 else if (s->state == SERVICE_RELOAD) {
2294 s->reload_result = SERVICE_FAILURE_RESOURCES;
2295 service_enter_running(s, SERVICE_SUCCESS);
2296 } else
2297 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2298}
2299
2300static void service_run_next_main(Service *s) {
2301 pid_t pid;
2302 int r;
2303
2304 assert(s);
2305 assert(s->main_command);
2306 assert(s->main_command->command_next);
2307 assert(s->type == SERVICE_ONESHOT);
2308
2309 s->main_command = s->main_command->command_next;
2310 service_unwatch_main_pid(s);
2311
2312 if ((r = service_spawn(s,
2313 s->main_command,
2314 false,
2315 true,
2316 true,
2317 true,
2318 true,
2319 s->notify_access != NOTIFY_NONE,
2320 &pid)) < 0)
2321 goto fail;
2322
2323 service_set_main_pid(s, pid);
2324
2325 return;
2326
2327fail:
2328 log_warning("%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2329 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2330}
2331
2332static int service_start_limit_test(Service *s) {
2333 assert(s);
2334
2335 if (ratelimit_test(&s->start_limit))
2336 return 0;
2337
2338 switch (s->start_limit_action) {
2339
2340 case SERVICE_START_LIMIT_NONE:
2341 log_warning("%s start request repeated too quickly, refusing to start.", UNIT(s)->id);
2342 break;
2343
2344 case SERVICE_START_LIMIT_REBOOT: {
2345 DBusError error;
2346 int r;
2347
2348 dbus_error_init(&error);
2349
2350 log_warning("%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2351
2352 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START, SPECIAL_REBOOT_TARGET, JOB_REPLACE, true, &error, NULL);
2353 if (r < 0) {
2354 log_error("Failed to reboot: %s.", bus_error(&error, r));
2355 dbus_error_free(&error);
2356 }
2357
2358 break;
2359 }
2360
2361 case SERVICE_START_LIMIT_REBOOT_FORCE:
2362 log_warning("%s start request repeated too quickly, force rebooting.", UNIT(s)->id);
2363 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2364 break;
2365
2366 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2367 log_warning("%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2368 reboot(RB_AUTOBOOT);
2369 break;
2370
2371 default:
2372 log_error("start limit action=%i", s->start_limit_action);
2373 assert_not_reached("Unknown StartLimitAction.");
2374 }
2375
2376 return -ECANCELED;
2377}
2378
2379static int service_start(Unit *u) {
2380 Service *s = SERVICE(u);
2381 int r;
2382
2383 assert(s);
2384
2385 /* We cannot fulfill this request right now, try again later
2386 * please! */
2387 if (s->state == SERVICE_STOP ||
2388 s->state == SERVICE_STOP_SIGTERM ||
2389 s->state == SERVICE_STOP_SIGKILL ||
2390 s->state == SERVICE_STOP_POST ||
2391 s->state == SERVICE_FINAL_SIGTERM ||
2392 s->state == SERVICE_FINAL_SIGKILL)
2393 return -EAGAIN;
2394
2395 /* Already on it! */
2396 if (s->state == SERVICE_START_PRE ||
2397 s->state == SERVICE_START ||
2398 s->state == SERVICE_START_POST)
2399 return 0;
2400
2401 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
2402
2403 /* Make sure we don't enter a busy loop of some kind. */
2404 r = service_start_limit_test(s);
2405 if (r < 0)
2406 return r;
2407
2408 s->result = SERVICE_SUCCESS;
2409 s->reload_result = SERVICE_SUCCESS;
2410 s->main_pid_known = false;
2411 s->main_pid_alien = false;
2412 s->forbid_restart = false;
2413
2414 service_enter_start_pre(s);
2415 return 0;
2416}
2417
2418static int service_stop(Unit *u) {
2419 Service *s = SERVICE(u);
2420
2421 assert(s);
2422
2423 /* This is a user request, so don't do restarts on this
2424 * shutdown. */
2425 s->forbid_restart = true;
2426
2427 /* Already on it */
2428 if (s->state == SERVICE_STOP ||
2429 s->state == SERVICE_STOP_SIGTERM ||
2430 s->state == SERVICE_STOP_SIGKILL ||
2431 s->state == SERVICE_STOP_POST ||
2432 s->state == SERVICE_FINAL_SIGTERM ||
2433 s->state == SERVICE_FINAL_SIGKILL)
2434 return 0;
2435
2436 /* Don't allow a restart */
2437 if (s->state == SERVICE_AUTO_RESTART) {
2438 service_set_state(s, SERVICE_DEAD);
2439 return 0;
2440 }
2441
2442 /* If there's already something running we go directly into
2443 * kill mode. */
2444 if (s->state == SERVICE_START_PRE ||
2445 s->state == SERVICE_START ||
2446 s->state == SERVICE_START_POST ||
2447 s->state == SERVICE_RELOAD) {
2448 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2449 return 0;
2450 }
2451
2452 assert(s->state == SERVICE_RUNNING ||
2453 s->state == SERVICE_EXITED);
2454
2455 service_enter_stop(s, SERVICE_SUCCESS);
2456 return 0;
2457}
2458
2459static int service_reload(Unit *u) {
2460 Service *s = SERVICE(u);
2461
2462 assert(s);
2463
2464 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2465
2466 service_enter_reload(s);
2467 return 0;
2468}
2469
2470static bool service_can_reload(Unit *u) {
2471 Service *s = SERVICE(u);
2472
2473 assert(s);
2474
2475 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2476}
2477
2478static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2479 Service *s = SERVICE(u);
2480
2481 assert(u);
2482 assert(f);
2483 assert(fds);
2484
2485 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2486 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2487 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2488
2489 if (s->control_pid > 0)
2490 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2491
2492 if (s->main_pid_known && s->main_pid > 0)
2493 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2494
2495 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2496
2497 if (s->status_text)
2498 unit_serialize_item(u, f, "status-text", s->status_text);
2499
2500 /* FIXME: There's a minor uncleanliness here: if there are
2501 * multiple commands attached here, we will start from the
2502 * first one again */
2503 if (s->control_command_id >= 0)
2504 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2505
2506 if (s->socket_fd >= 0) {
2507 int copy;
2508
2509 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2510 return copy;
2511
2512 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2513 }
2514
2515 if (s->main_exec_status.pid > 0) {
2516 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2517 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2518 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2519
2520 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2521 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2522 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2523 }
2524 }
2525 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2526 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2527
2528 return 0;
2529}
2530
2531static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2532 Service *s = SERVICE(u);
2533
2534 assert(u);
2535 assert(key);
2536 assert(value);
2537 assert(fds);
2538
2539 if (streq(key, "state")) {
2540 ServiceState state;
2541
2542 if ((state = service_state_from_string(value)) < 0)
2543 log_debug("Failed to parse state value %s", value);
2544 else
2545 s->deserialized_state = state;
2546 } else if (streq(key, "result")) {
2547 ServiceResult f;
2548
2549 f = service_result_from_string(value);
2550 if (f < 0)
2551 log_debug("Failed to parse result value %s", value);
2552 else if (f != SERVICE_SUCCESS)
2553 s->result = f;
2554
2555 } else if (streq(key, "reload-result")) {
2556 ServiceResult f;
2557
2558 f = service_result_from_string(value);
2559 if (f < 0)
2560 log_debug("Failed to parse reload result value %s", value);
2561 else if (f != SERVICE_SUCCESS)
2562 s->reload_result = f;
2563
2564 } else if (streq(key, "control-pid")) {
2565 pid_t pid;
2566
2567 if (parse_pid(value, &pid) < 0)
2568 log_debug("Failed to parse control-pid value %s", value);
2569 else
2570 s->control_pid = pid;
2571 } else if (streq(key, "main-pid")) {
2572 pid_t pid;
2573
2574 if (parse_pid(value, &pid) < 0)
2575 log_debug("Failed to parse main-pid value %s", value);
2576 else
2577 service_set_main_pid(s, (pid_t) pid);
2578 } else if (streq(key, "main-pid-known")) {
2579 int b;
2580
2581 if ((b = parse_boolean(value)) < 0)
2582 log_debug("Failed to parse main-pid-known value %s", value);
2583 else
2584 s->main_pid_known = b;
2585 } else if (streq(key, "status-text")) {
2586 char *t;
2587
2588 if ((t = strdup(value))) {
2589 free(s->status_text);
2590 s->status_text = t;
2591 }
2592
2593 } else if (streq(key, "control-command")) {
2594 ServiceExecCommand id;
2595
2596 if ((id = service_exec_command_from_string(value)) < 0)
2597 log_debug("Failed to parse exec-command value %s", value);
2598 else {
2599 s->control_command_id = id;
2600 s->control_command = s->exec_command[id];
2601 }
2602 } else if (streq(key, "socket-fd")) {
2603 int fd;
2604
2605 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2606 log_debug("Failed to parse socket-fd value %s", value);
2607 else {
2608
2609 if (s->socket_fd >= 0)
2610 close_nointr_nofail(s->socket_fd);
2611 s->socket_fd = fdset_remove(fds, fd);
2612 }
2613 } else if (streq(key, "main-exec-status-pid")) {
2614 pid_t pid;
2615
2616 if (parse_pid(value, &pid) < 0)
2617 log_debug("Failed to parse main-exec-status-pid value %s", value);
2618 else
2619 s->main_exec_status.pid = pid;
2620 } else if (streq(key, "main-exec-status-code")) {
2621 int i;
2622
2623 if (safe_atoi(value, &i) < 0)
2624 log_debug("Failed to parse main-exec-status-code value %s", value);
2625 else
2626 s->main_exec_status.code = i;
2627 } else if (streq(key, "main-exec-status-status")) {
2628 int i;
2629
2630 if (safe_atoi(value, &i) < 0)
2631 log_debug("Failed to parse main-exec-status-status value %s", value);
2632 else
2633 s->main_exec_status.status = i;
2634 } else if (streq(key, "main-exec-status-start"))
2635 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2636 else if (streq(key, "main-exec-status-exit"))
2637 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2638 else if (streq(key, "watchdog-timestamp"))
2639 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2640 else
2641 log_debug("Unknown serialization key '%s'", key);
2642
2643 return 0;
2644}
2645
2646static UnitActiveState service_active_state(Unit *u) {
2647 assert(u);
2648
2649 return state_translation_table[SERVICE(u)->state];
2650}
2651
2652static const char *service_sub_state_to_string(Unit *u) {
2653 assert(u);
2654
2655 return service_state_to_string(SERVICE(u)->state);
2656}
2657
2658static bool service_check_gc(Unit *u) {
2659 Service *s = SERVICE(u);
2660
2661 assert(s);
2662
2663 /* Never clean up services that still have a process around,
2664 * even if the service is formally dead. */
2665 if (cgroup_good(s) > 0 ||
2666 main_pid_good(s) > 0 ||
2667 control_pid_good(s) > 0)
2668 return true;
2669
2670#ifdef HAVE_SYSV_COMPAT
2671 if (s->sysv_path)
2672 return true;
2673#endif
2674
2675 return false;
2676}
2677
2678static bool service_check_snapshot(Unit *u) {
2679 Service *s = SERVICE(u);
2680
2681 assert(s);
2682
2683 return !s->got_socket_fd;
2684}
2685
2686static int service_retry_pid_file(Service *s) {
2687 int r;
2688
2689 assert(s->pid_file);
2690 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2691
2692 r = service_load_pid_file(s, false);
2693 if (r < 0)
2694 return r;
2695
2696 service_unwatch_pid_file(s);
2697
2698 service_enter_running(s, SERVICE_SUCCESS);
2699 return 0;
2700}
2701
2702static int service_watch_pid_file(Service *s) {
2703 int r;
2704
2705 log_debug("Setting watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
2706 r = path_spec_watch(s->pid_file_pathspec, UNIT(s));
2707 if (r < 0)
2708 goto fail;
2709
2710 /* the pidfile might have appeared just before we set the watch */
2711 service_retry_pid_file(s);
2712
2713 return 0;
2714fail:
2715 log_error("Failed to set a watch for %s's PID file %s: %s",
2716 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2717 service_unwatch_pid_file(s);
2718 return r;
2719}
2720
2721static int service_demand_pid_file(Service *s) {
2722 PathSpec *ps;
2723
2724 assert(s->pid_file);
2725 assert(!s->pid_file_pathspec);
2726
2727 ps = new0(PathSpec, 1);
2728 if (!ps)
2729 return -ENOMEM;
2730
2731 ps->path = strdup(s->pid_file);
2732 if (!ps->path) {
2733 free(ps);
2734 return -ENOMEM;
2735 }
2736
2737 path_kill_slashes(ps->path);
2738
2739 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2740 * keep their PID file open all the time. */
2741 ps->type = PATH_MODIFIED;
2742 ps->inotify_fd = -1;
2743
2744 s->pid_file_pathspec = ps;
2745
2746 return service_watch_pid_file(s);
2747}
2748
2749static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
2750 Service *s = SERVICE(u);
2751
2752 assert(s);
2753 assert(fd >= 0);
2754 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2755 assert(s->pid_file_pathspec);
2756 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2757
2758 log_debug("inotify event for %s", u->id);
2759
2760 if (path_spec_fd_event(s->pid_file_pathspec, events) < 0)
2761 goto fail;
2762
2763 if (service_retry_pid_file(s) == 0)
2764 return;
2765
2766 if (service_watch_pid_file(s) < 0)
2767 goto fail;
2768
2769 return;
2770fail:
2771 service_unwatch_pid_file(s);
2772 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2773}
2774
2775static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2776 Service *s = SERVICE(u);
2777 ServiceResult f;
2778
2779 assert(s);
2780 assert(pid >= 0);
2781
2782 if (UNIT(s)->fragment_path ? is_clean_exit(code, status) : is_clean_exit_lsb(code, status))
2783 f = SERVICE_SUCCESS;
2784 else if (code == CLD_EXITED)
2785 f = SERVICE_FAILURE_EXIT_CODE;
2786 else if (code == CLD_KILLED)
2787 f = SERVICE_FAILURE_SIGNAL;
2788 else if (code == CLD_DUMPED)
2789 f = SERVICE_FAILURE_CORE_DUMP;
2790 else
2791 assert_not_reached("Unknown code");
2792
2793 if (s->main_pid == pid) {
2794 /* Forking services may occasionally move to a new PID.
2795 * As long as they update the PID file before exiting the old
2796 * PID, they're fine. */
2797 if (service_load_pid_file(s, false) == 0)
2798 return;
2799
2800 s->main_pid = 0;
2801 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2802
2803 /* If this is not a forking service than the main
2804 * process got started and hence we copy the exit
2805 * status so that it is recorded both as main and as
2806 * control process exit status */
2807 if (s->main_command) {
2808 s->main_command->exec_status = s->main_exec_status;
2809
2810 if (s->main_command->ignore)
2811 f = SERVICE_SUCCESS;
2812 }
2813
2814 log_full(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2815 "%s: main process exited, code=%s, status=%i", u->id, sigchld_code_to_string(code), status);
2816
2817 if (f != SERVICE_SUCCESS)
2818 s->result = f;
2819
2820 if (s->main_command &&
2821 s->main_command->command_next &&
2822 f == SERVICE_SUCCESS) {
2823
2824 /* There is another command to *
2825 * execute, so let's do that. */
2826
2827 log_debug("%s running next main command for state %s", u->id, service_state_to_string(s->state));
2828 service_run_next_main(s);
2829
2830 } else {
2831
2832 /* The service exited, so the service is officially
2833 * gone. */
2834 s->main_command = NULL;
2835
2836 switch (s->state) {
2837
2838 case SERVICE_START_POST:
2839 case SERVICE_RELOAD:
2840 case SERVICE_STOP:
2841 /* Need to wait until the operation is
2842 * done */
2843 break;
2844
2845 case SERVICE_START:
2846 if (s->type == SERVICE_ONESHOT) {
2847 /* This was our main goal, so let's go on */
2848 if (f == SERVICE_SUCCESS)
2849 service_enter_start_post(s);
2850 else
2851 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
2852 break;
2853 } else {
2854 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2855
2856 /* Fall through */
2857 }
2858
2859 case SERVICE_RUNNING:
2860 service_enter_running(s, f);
2861 break;
2862
2863 case SERVICE_STOP_SIGTERM:
2864 case SERVICE_STOP_SIGKILL:
2865
2866 if (!control_pid_good(s))
2867 service_enter_stop_post(s, f);
2868
2869 /* If there is still a control process, wait for that first */
2870 break;
2871
2872 default:
2873 assert_not_reached("Uh, main process died at wrong time.");
2874 }
2875 }
2876
2877 } else if (s->control_pid == pid) {
2878
2879 s->control_pid = 0;
2880
2881 if (s->control_command) {
2882 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
2883
2884 if (s->control_command->ignore)
2885 f = SERVICE_SUCCESS;
2886 }
2887
2888 log_full(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2889 "%s: control process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
2890
2891 if (f != SERVICE_SUCCESS)
2892 s->result = f;
2893
2894 if (s->control_command &&
2895 s->control_command->command_next &&
2896 f == SERVICE_SUCCESS) {
2897
2898 /* There is another command to *
2899 * execute, so let's do that. */
2900
2901 log_debug("%s running next control command for state %s", u->id, service_state_to_string(s->state));
2902 service_run_next_control(s);
2903
2904 } else {
2905 /* No further commands for this step, so let's
2906 * figure out what to do next */
2907
2908 s->control_command = NULL;
2909 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2910
2911 log_debug("%s got final SIGCHLD for state %s", u->id, service_state_to_string(s->state));
2912
2913 switch (s->state) {
2914
2915 case SERVICE_START_PRE:
2916 if (f == SERVICE_SUCCESS)
2917 service_enter_start(s);
2918 else
2919 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
2920 break;
2921
2922 case SERVICE_START:
2923 assert(s->type == SERVICE_FORKING);
2924
2925 if (f != SERVICE_SUCCESS) {
2926 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
2927 break;
2928 }
2929
2930 if (s->pid_file) {
2931 bool has_start_post;
2932 int r;
2933
2934 /* Let's try to load the pid file here if we can.
2935 * The PID file might actually be created by a START_POST
2936 * script. In that case don't worry if the loading fails. */
2937
2938 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
2939 r = service_load_pid_file(s, !has_start_post);
2940 if (!has_start_post && r < 0) {
2941 r = service_demand_pid_file(s);
2942 if (r < 0 || !cgroup_good(s))
2943 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2944 break;
2945 }
2946 } else
2947 service_search_main_pid(s);
2948
2949 service_enter_start_post(s);
2950 break;
2951
2952 case SERVICE_START_POST:
2953 if (f != SERVICE_SUCCESS) {
2954 service_enter_stop(s, f);
2955 break;
2956 }
2957
2958 if (s->pid_file) {
2959 int r;
2960
2961 r = service_load_pid_file(s, true);
2962 if (r < 0) {
2963 r = service_demand_pid_file(s);
2964 if (r < 0 || !cgroup_good(s))
2965 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2966 break;
2967 }
2968 } else
2969 service_search_main_pid(s);
2970
2971 service_enter_running(s, SERVICE_SUCCESS);
2972 break;
2973
2974 case SERVICE_RELOAD:
2975 if (f == SERVICE_SUCCESS) {
2976 service_load_pid_file(s, true);
2977 service_search_main_pid(s);
2978 }
2979
2980 s->reload_result = f;
2981 service_enter_running(s, SERVICE_SUCCESS);
2982 break;
2983
2984 case SERVICE_STOP:
2985 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
2986 break;
2987
2988 case SERVICE_STOP_SIGTERM:
2989 case SERVICE_STOP_SIGKILL:
2990 if (main_pid_good(s) <= 0)
2991 service_enter_stop_post(s, f);
2992
2993 /* If there is still a service
2994 * process around, wait until
2995 * that one quit, too */
2996 break;
2997
2998 case SERVICE_STOP_POST:
2999 case SERVICE_FINAL_SIGTERM:
3000 case SERVICE_FINAL_SIGKILL:
3001 service_enter_dead(s, f, true);
3002 break;
3003
3004 default:
3005 assert_not_reached("Uh, control process died at wrong time.");
3006 }
3007 }
3008 }
3009
3010 /* Notify clients about changed exit status */
3011 unit_add_to_dbus_queue(u);
3012}
3013
3014static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
3015 Service *s = SERVICE(u);
3016
3017 assert(s);
3018 assert(elapsed == 1);
3019
3020 if (w == &s->watchdog_watch) {
3021 service_handle_watchdog(s);
3022 return;
3023 }
3024
3025 assert(w == &s->timer_watch);
3026
3027 switch (s->state) {
3028
3029 case SERVICE_START_PRE:
3030 case SERVICE_START:
3031 log_warning("%s operation timed out. Terminating.", u->id);
3032 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3033 break;
3034
3035 case SERVICE_START_POST:
3036 log_warning("%s operation timed out. Stopping.", u->id);
3037 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3038 break;
3039
3040 case SERVICE_RELOAD:
3041 log_warning("%s operation timed out. Stopping.", u->id);
3042 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3043 service_enter_running(s, SERVICE_SUCCESS);
3044 break;
3045
3046 case SERVICE_STOP:
3047 log_warning("%s stopping timed out. Terminating.", u->id);
3048 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3049 break;
3050
3051 case SERVICE_STOP_SIGTERM:
3052 if (s->exec_context.send_sigkill) {
3053 log_warning("%s stopping timed out. Killing.", u->id);
3054 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3055 } else {
3056 log_warning("%s stopping timed out. Skipping SIGKILL.", u->id);
3057 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3058 }
3059
3060 break;
3061
3062 case SERVICE_STOP_SIGKILL:
3063 /* Uh, we sent a SIGKILL and it is still not gone?
3064 * Must be something we cannot kill, so let's just be
3065 * weirded out and continue */
3066
3067 log_warning("%s still around after SIGKILL. Ignoring.", u->id);
3068 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3069 break;
3070
3071 case SERVICE_STOP_POST:
3072 log_warning("%s stopping timed out (2). Terminating.", u->id);
3073 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3074 break;
3075
3076 case SERVICE_FINAL_SIGTERM:
3077 if (s->exec_context.send_sigkill) {
3078 log_warning("%s stopping timed out (2). Killing.", u->id);
3079 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3080 } else {
3081 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->id);
3082 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3083 }
3084
3085 break;
3086
3087 case SERVICE_FINAL_SIGKILL:
3088 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->id);
3089 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3090 break;
3091
3092 case SERVICE_AUTO_RESTART:
3093 log_info("%s holdoff time over, scheduling restart.", u->id);
3094 service_enter_restart(s);
3095 break;
3096
3097 default:
3098 assert_not_reached("Timeout at wrong time.");
3099 }
3100}
3101
3102static void service_cgroup_notify_event(Unit *u) {
3103 Service *s = SERVICE(u);
3104
3105 assert(u);
3106
3107 log_debug("%s: cgroup is empty", u->id);
3108
3109 switch (s->state) {
3110
3111 /* Waiting for SIGCHLD is usually more interesting,
3112 * because it includes return codes/signals. Which is
3113 * why we ignore the cgroup events for most cases,
3114 * except when we don't know pid which to expect the
3115 * SIGCHLD for. */
3116
3117 case SERVICE_START:
3118 case SERVICE_START_POST:
3119 /* If we were hoping for the daemon to write its PID file,
3120 * we can give up now. */
3121 if (s->pid_file_pathspec) {
3122 log_warning("%s never wrote its PID file. Failing.", UNIT(s)->id);
3123 service_unwatch_pid_file(s);
3124 if (s->state == SERVICE_START)
3125 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3126 else
3127 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3128 }
3129 break;
3130
3131 case SERVICE_RUNNING:
3132 /* service_enter_running() will figure out what to do */
3133 service_enter_running(s, SERVICE_SUCCESS);
3134 break;
3135
3136 case SERVICE_STOP_SIGTERM:
3137 case SERVICE_STOP_SIGKILL:
3138
3139 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3140 service_enter_stop_post(s, SERVICE_SUCCESS);
3141
3142 break;
3143
3144 case SERVICE_FINAL_SIGTERM:
3145 case SERVICE_FINAL_SIGKILL:
3146 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3147 service_enter_dead(s, SERVICE_SUCCESS, SERVICE_SUCCESS);
3148
3149 break;
3150
3151 default:
3152 ;
3153 }
3154}
3155
3156static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3157 Service *s = SERVICE(u);
3158 const char *e;
3159
3160 assert(u);
3161
3162 if (s->notify_access == NOTIFY_NONE) {
3163 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
3164 u->id, (unsigned long) pid);
3165 return;
3166 }
3167
3168 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3169 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
3170 u->id, (unsigned long) pid, (unsigned long) s->main_pid);
3171 return;
3172 }
3173
3174 log_debug("%s: Got message", u->id);
3175
3176 /* Interpret MAINPID= */
3177 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3178 (s->state == SERVICE_START ||
3179 s->state == SERVICE_START_POST ||
3180 s->state == SERVICE_RUNNING ||
3181 s->state == SERVICE_RELOAD)) {
3182
3183 if (parse_pid(e + 8, &pid) < 0)
3184 log_warning("Failed to parse notification message %s", e);
3185 else {
3186 log_debug("%s: got %s", u->id, e);
3187 service_set_main_pid(s, pid);
3188 }
3189 }
3190
3191 /* Interpret READY= */
3192 if (s->type == SERVICE_NOTIFY &&
3193 s->state == SERVICE_START &&
3194 strv_find(tags, "READY=1")) {
3195 log_debug("%s: got READY=1", u->id);
3196
3197 service_enter_start_post(s);
3198 }
3199
3200 /* Interpret STATUS= */
3201 if ((e = strv_find_prefix(tags, "STATUS="))) {
3202 char *t;
3203
3204 if (e[7]) {
3205 if (!(t = strdup(e+7))) {
3206 log_error("Failed to allocate string.");
3207 return;
3208 }
3209
3210 log_debug("%s: got %s", u->id, e);
3211
3212 free(s->status_text);
3213 s->status_text = t;
3214 } else {
3215 free(s->status_text);
3216 s->status_text = NULL;
3217 }
3218
3219 }
3220 if (strv_find(tags, "WATCHDOG=1")) {
3221 log_debug("%s: got WATCHDOG=1", u->id);
3222 service_reset_watchdog(s);
3223 }
3224
3225 /* Notify clients about changed status or main pid */
3226 unit_add_to_dbus_queue(u);
3227}
3228
3229#ifdef HAVE_SYSV_COMPAT
3230
3231#ifdef TARGET_SUSE
3232static void sysv_facility_in_insserv_conf(Manager *mgr) {
3233 FILE *f=NULL;
3234 int r;
3235
3236 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3237 r = errno == ENOENT ? 0 : -errno;
3238 goto finish;
3239 }
3240
3241 while (!feof(f)) {
3242 char l[LINE_MAX], *t;
3243 char **parsed = NULL;
3244
3245 if (!fgets(l, sizeof(l), f)) {
3246 if (feof(f))
3247 break;
3248
3249 r = -errno;
3250 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3251 goto finish;
3252 }
3253
3254 t = strstrip(l);
3255 if (*t != '$' && *t != '<')
3256 continue;
3257
3258 parsed = strv_split(t,WHITESPACE);
3259 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3260 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3261 char *facility;
3262 Unit *u;
3263 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3264 continue;
3265 if ((u = manager_get_unit(mgr, facility)) && (u->type == UNIT_TARGET)) {
3266 UnitDependency e;
3267 char *dep = NULL, *name, **j;
3268
3269 STRV_FOREACH (j, parsed+1) {
3270 if (*j[0]=='+') {
3271 e = UNIT_WANTS;
3272 name = *j+1;
3273 }
3274 else {
3275 e = UNIT_REQUIRES;
3276 name = *j;
3277 }
3278 if (sysv_translate_facility(name, NULL, &dep) < 0)
3279 continue;
3280
3281 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3282 free(dep);
3283 }
3284 }
3285 free(facility);
3286 }
3287 strv_free(parsed);
3288 }
3289finish:
3290 if (f)
3291 fclose(f);
3292
3293}
3294#endif
3295
3296static int service_enumerate(Manager *m) {
3297 char **p;
3298 unsigned i;
3299 DIR *d = NULL;
3300 char *path = NULL, *fpath = NULL, *name = NULL;
3301 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3302 Unit *service;
3303 Iterator j;
3304 int r;
3305
3306 assert(m);
3307
3308 if (m->running_as != MANAGER_SYSTEM)
3309 return 0;
3310
3311 zero(runlevel_services);
3312
3313 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3314 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3315 struct dirent *de;
3316
3317 free(path);
3318 path = join(*p, "/", rcnd_table[i].path, NULL);
3319 if (!path) {
3320 r = -ENOMEM;
3321 goto finish;
3322 }
3323
3324 if (d)
3325 closedir(d);
3326
3327 if (!(d = opendir(path))) {
3328 if (errno != ENOENT)
3329 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3330
3331 continue;
3332 }
3333
3334 while ((de = readdir(d))) {
3335 int a, b;
3336
3337 if (ignore_file(de->d_name))
3338 continue;
3339
3340 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3341 continue;
3342
3343 if (strlen(de->d_name) < 4)
3344 continue;
3345
3346 a = undecchar(de->d_name[1]);
3347 b = undecchar(de->d_name[2]);
3348
3349 if (a < 0 || b < 0)
3350 continue;
3351
3352 free(fpath);
3353 fpath = join(path, "/", de->d_name, NULL);
3354 if (!fpath) {
3355 r = -ENOMEM;
3356 goto finish;
3357 }
3358
3359 if (access(fpath, X_OK) < 0) {
3360
3361 if (errno != ENOENT)
3362 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3363
3364 continue;
3365 }
3366
3367 free(name);
3368 if (!(name = sysv_translate_name(de->d_name + 3))) {
3369 r = -ENOMEM;
3370 goto finish;
3371 }
3372
3373 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3374 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3375 continue;
3376 }
3377
3378 if (de->d_name[0] == 'S') {
3379
3380 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3381 SERVICE(service)->sysv_start_priority_from_rcnd =
3382 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3383
3384 SERVICE(service)->sysv_enabled = true;
3385 }
3386
3387 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3388 goto finish;
3389
3390 if ((r = set_put(runlevel_services[i], service)) < 0)
3391 goto finish;
3392
3393 } else if (de->d_name[0] == 'K' &&
3394 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3395 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3396
3397 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3398 goto finish;
3399
3400 if ((r = set_put(shutdown_services, service)) < 0)
3401 goto finish;
3402 }
3403 }
3404 }
3405
3406 /* Now we loaded all stubs and are aware of the lowest
3407 start-up priority for all services, not let's actually load
3408 the services, this will also tell us which services are
3409 actually native now */
3410 manager_dispatch_load_queue(m);
3411
3412 /* If this is a native service, rely on native ways to pull in
3413 * a service, don't pull it in via sysv rcN.d links. */
3414 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3415 SET_FOREACH(service, runlevel_services[i], j) {
3416 service = unit_follow_merge(service);
3417
3418 if (service->fragment_path)
3419 continue;
3420
3421 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3422 goto finish;
3423 }
3424
3425 /* We honour K links only for halt/reboot. For the normal
3426 * runlevels we assume the stop jobs will be implicitly added
3427 * by the core logic. Also, we don't really distinguish here
3428 * between the runlevels 0 and 6 and just add them to the
3429 * special shutdown target. On SUSE the boot.d/ runlevel is
3430 * also used for shutdown, so we add links for that too to the
3431 * shutdown target.*/
3432 SET_FOREACH(service, shutdown_services, j) {
3433 service = unit_follow_merge(service);
3434
3435 if (service->fragment_path)
3436 continue;
3437
3438 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3439 goto finish;
3440 }
3441
3442 r = 0;
3443
3444#ifdef TARGET_SUSE
3445 sysv_facility_in_insserv_conf (m);
3446#endif
3447
3448finish:
3449 free(path);
3450 free(fpath);
3451 free(name);
3452
3453 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3454 set_free(runlevel_services[i]);
3455 set_free(shutdown_services);
3456
3457 if (d)
3458 closedir(d);
3459
3460 return r;
3461}
3462#endif
3463
3464static void service_bus_name_owner_change(
3465 Unit *u,
3466 const char *name,
3467 const char *old_owner,
3468 const char *new_owner) {
3469
3470 Service *s = SERVICE(u);
3471
3472 assert(s);
3473 assert(name);
3474
3475 assert(streq(s->bus_name, name));
3476 assert(old_owner || new_owner);
3477
3478 if (old_owner && new_owner)
3479 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->id, name, old_owner, new_owner);
3480 else if (old_owner)
3481 log_debug("%s's D-Bus name %s no longer registered by %s", u->id, name, old_owner);
3482 else
3483 log_debug("%s's D-Bus name %s now registered by %s", u->id, name, new_owner);
3484
3485 s->bus_name_good = !!new_owner;
3486
3487 if (s->type == SERVICE_DBUS) {
3488
3489 /* service_enter_running() will figure out what to
3490 * do */
3491 if (s->state == SERVICE_RUNNING)
3492 service_enter_running(s, SERVICE_SUCCESS);
3493 else if (s->state == SERVICE_START && new_owner)
3494 service_enter_start_post(s);
3495
3496 } else if (new_owner &&
3497 s->main_pid <= 0 &&
3498 (s->state == SERVICE_START ||
3499 s->state == SERVICE_START_POST ||
3500 s->state == SERVICE_RUNNING ||
3501 s->state == SERVICE_RELOAD)) {
3502
3503 /* Try to acquire PID from bus service */
3504 log_debug("Trying to acquire PID from D-Bus name...");
3505
3506 bus_query_pid(u->manager, name);
3507 }
3508}
3509
3510static void service_bus_query_pid_done(
3511 Unit *u,
3512 const char *name,
3513 pid_t pid) {
3514
3515 Service *s = SERVICE(u);
3516
3517 assert(s);
3518 assert(name);
3519
3520 log_debug("%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3521
3522 if (s->main_pid <= 0 &&
3523 (s->state == SERVICE_START ||
3524 s->state == SERVICE_START_POST ||
3525 s->state == SERVICE_RUNNING ||
3526 s->state == SERVICE_RELOAD))
3527 service_set_main_pid(s, pid);
3528}
3529
3530int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3531
3532 assert(s);
3533 assert(fd >= 0);
3534
3535 /* This is called by the socket code when instantiating a new
3536 * service for a stream socket and the socket needs to be
3537 * configured. */
3538
3539 if (UNIT(s)->load_state != UNIT_LOADED)
3540 return -EINVAL;
3541
3542 if (s->socket_fd >= 0)
3543 return -EBUSY;
3544
3545 if (s->state != SERVICE_DEAD)
3546 return -EAGAIN;
3547
3548 s->socket_fd = fd;
3549 s->got_socket_fd = true;
3550
3551 unit_ref_set(&s->accept_socket, UNIT(sock));
3552
3553 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3554}
3555
3556static void service_reset_failed(Unit *u) {
3557 Service *s = SERVICE(u);
3558
3559 assert(s);
3560
3561 if (s->state == SERVICE_FAILED)
3562 service_set_state(s, SERVICE_DEAD);
3563
3564 s->result = SERVICE_SUCCESS;
3565 s->reload_result = SERVICE_SUCCESS;
3566}
3567
3568static bool service_need_daemon_reload(Unit *u) {
3569 Service *s = SERVICE(u);
3570
3571 assert(s);
3572
3573#ifdef HAVE_SYSV_COMPAT
3574 if (s->sysv_path) {
3575 struct stat st;
3576
3577 zero(st);
3578 if (stat(s->sysv_path, &st) < 0)
3579 /* What, cannot access this anymore? */
3580 return true;
3581
3582 if (s->sysv_mtime > 0 &&
3583 timespec_load(&st.st_mtim) != s->sysv_mtime)
3584 return true;
3585 }
3586#endif
3587
3588 return false;
3589}
3590
3591static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3592 Service *s = SERVICE(u);
3593 int r = 0;
3594 Set *pid_set = NULL;
3595
3596 assert(s);
3597
3598 if (s->main_pid <= 0 && who == KILL_MAIN) {
3599 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3600 return -ESRCH;
3601 }
3602
3603 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3604 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3605 return -ESRCH;
3606 }
3607
3608 if (who == KILL_CONTROL || who == KILL_ALL)
3609 if (s->control_pid > 0)
3610 if (kill(s->control_pid, signo) < 0)
3611 r = -errno;
3612
3613 if (who == KILL_MAIN || who == KILL_ALL)
3614 if (s->main_pid > 0)
3615 if (kill(s->main_pid, signo) < 0)
3616 r = -errno;
3617
3618 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
3619 int q;
3620
3621 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3622 return -ENOMEM;
3623
3624 /* Exclude the control/main pid from being killed via the cgroup */
3625 if (s->control_pid > 0)
3626 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3627 r = q;
3628 goto finish;
3629 }
3630
3631 if (s->main_pid > 0)
3632 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3633 r = q;
3634 goto finish;
3635 }
3636
3637 if ((q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, pid_set)) < 0)
3638 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3639 r = q;
3640 }
3641
3642finish:
3643 if (pid_set)
3644 set_free(pid_set);
3645
3646 return r;
3647}
3648
3649static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3650 [SERVICE_DEAD] = "dead",
3651 [SERVICE_START_PRE] = "start-pre",
3652 [SERVICE_START] = "start",
3653 [SERVICE_START_POST] = "start-post",
3654 [SERVICE_RUNNING] = "running",
3655 [SERVICE_EXITED] = "exited",
3656 [SERVICE_RELOAD] = "reload",
3657 [SERVICE_STOP] = "stop",
3658 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3659 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3660 [SERVICE_STOP_POST] = "stop-post",
3661 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3662 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3663 [SERVICE_FAILED] = "failed",
3664 [SERVICE_AUTO_RESTART] = "auto-restart",
3665};
3666
3667DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3668
3669static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3670 [SERVICE_RESTART_NO] = "no",
3671 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3672 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3673 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3674 [SERVICE_RESTART_ALWAYS] = "always"
3675};
3676
3677DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3678
3679static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3680 [SERVICE_SIMPLE] = "simple",
3681 [SERVICE_FORKING] = "forking",
3682 [SERVICE_ONESHOT] = "oneshot",
3683 [SERVICE_DBUS] = "dbus",
3684 [SERVICE_NOTIFY] = "notify"
3685};
3686
3687DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3688
3689static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3690 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3691 [SERVICE_EXEC_START] = "ExecStart",
3692 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3693 [SERVICE_EXEC_RELOAD] = "ExecReload",
3694 [SERVICE_EXEC_STOP] = "ExecStop",
3695 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3696};
3697
3698DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3699
3700static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3701 [NOTIFY_NONE] = "none",
3702 [NOTIFY_MAIN] = "main",
3703 [NOTIFY_ALL] = "all"
3704};
3705
3706DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3707
3708static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3709 [SERVICE_SUCCESS] = "success",
3710 [SERVICE_FAILURE_RESOURCES] = "resources",
3711 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3712 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3713 [SERVICE_FAILURE_SIGNAL] = "signal",
3714 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3715 [SERVICE_FAILURE_WATCHDOG] = "watchdog"
3716};
3717
3718DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3719
3720static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3721 [SERVICE_START_LIMIT_NONE] = "none",
3722 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3723 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3724 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3725};
3726DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3727
3728const UnitVTable service_vtable = {
3729 .suffix = ".service",
3730 .object_size = sizeof(Service),
3731 .sections =
3732 "Unit\0"
3733 "Service\0"
3734 "Install\0",
3735 .show_status = true,
3736
3737 .init = service_init,
3738 .done = service_done,
3739 .load = service_load,
3740
3741 .coldplug = service_coldplug,
3742
3743 .dump = service_dump,
3744
3745 .start = service_start,
3746 .stop = service_stop,
3747 .reload = service_reload,
3748
3749 .can_reload = service_can_reload,
3750
3751 .kill = service_kill,
3752
3753 .serialize = service_serialize,
3754 .deserialize_item = service_deserialize_item,
3755
3756 .active_state = service_active_state,
3757 .sub_state_to_string = service_sub_state_to_string,
3758
3759 .check_gc = service_check_gc,
3760 .check_snapshot = service_check_snapshot,
3761
3762 .sigchld_event = service_sigchld_event,
3763 .timer_event = service_timer_event,
3764 .fd_event = service_fd_event,
3765
3766 .reset_failed = service_reset_failed,
3767
3768 .need_daemon_reload = service_need_daemon_reload,
3769
3770 .cgroup_notify_empty = service_cgroup_notify_event,
3771 .notify_message = service_notify_message,
3772
3773 .bus_name_owner_change = service_bus_name_owner_change,
3774 .bus_query_pid_done = service_bus_query_pid_done,
3775
3776 .bus_interface = "org.freedesktop.systemd1.Service",
3777 .bus_message_handler = bus_service_message_handler,
3778 .bus_invalidating_properties = bus_service_invalidating_properties,
3779
3780#ifdef HAVE_SYSV_COMPAT
3781 .enumerate = service_enumerate
3782#endif
3783};
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