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