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1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
22 #include <errno.h>
23 #include <signal.h>
24 #include <dirent.h>
25 #include <unistd.h>
26
27 #include "unit.h"
28 #include "service.h"
29 #include "load-fragment.h"
30 #include "load-dropin.h"
31 #include "log.h"
32 #include "strv.h"
33 #include "unit-name.h"
34 #include "dbus-service.h"
35 #include "special.h"
36 #include "bus-errors.h"
37
38 #define COMMENTS "#;\n"
39 #define NEWLINES "\n\r"
40
41 #ifdef HAVE_SYSV_COMPAT
42
43 #define DEFAULT_SYSV_TIMEOUT_USEC (3*USEC_PER_MINUTE)
44
45 typedef enum RunlevelType {
46 RUNLEVEL_UP,
47 RUNLEVEL_DOWN,
48 RUNLEVEL_SYSINIT
49 } RunlevelType;
50
51 static const struct {
52 const char *path;
53 const char *target;
54 const RunlevelType type;
55 } rcnd_table[] = {
56 /* Standard SysV runlevels for start-up */
57 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
58 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
59 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
60 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
61 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
62
63 #ifdef TARGET_SUSE
64 /* SUSE style boot.d */
65 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
66 #endif
67
68 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
69 /* Debian style rcS.d */
70 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
71 #endif
72
73 /* Standard SysV runlevels for shutdown */
74 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
75 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
76
77 /* Note that the order here matters, as we read the
78 directories in this order, and we want to make sure that
79 sysv_start_priority is known when we first load the
80 unit. And that value we only know from S links. Hence
81 UP/SYSINIT must be read before DOWN */
82 };
83
84 #define RUNLEVELS_UP "12345"
85 /* #define RUNLEVELS_DOWN "06" */
86 /* #define RUNLEVELS_BOOT "bBsS" */
87 #endif
88
89 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
90 [SERVICE_DEAD] = UNIT_INACTIVE,
91 [SERVICE_START_PRE] = UNIT_ACTIVATING,
92 [SERVICE_START] = UNIT_ACTIVATING,
93 [SERVICE_START_POST] = UNIT_ACTIVATING,
94 [SERVICE_RUNNING] = UNIT_ACTIVE,
95 [SERVICE_EXITED] = UNIT_ACTIVE,
96 [SERVICE_RELOAD] = UNIT_RELOADING,
97 [SERVICE_STOP] = UNIT_DEACTIVATING,
98 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
99 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
100 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
101 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
102 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
103 [SERVICE_FAILED] = UNIT_FAILED,
104 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
105 };
106
107 static void service_init(Unit *u) {
108 Service *s = SERVICE(u);
109
110 assert(u);
111 assert(u->meta.load_state == UNIT_STUB);
112
113 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
114 s->restart_usec = DEFAULT_RESTART_USEC;
115 s->timer_watch.type = WATCH_INVALID;
116 #ifdef HAVE_SYSV_COMPAT
117 s->sysv_start_priority = -1;
118 #endif
119 s->socket_fd = -1;
120
121 exec_context_init(&s->exec_context);
122
123 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
124
125 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
126 }
127
128 static void service_unwatch_control_pid(Service *s) {
129 assert(s);
130
131 if (s->control_pid <= 0)
132 return;
133
134 unit_unwatch_pid(UNIT(s), s->control_pid);
135 s->control_pid = 0;
136 }
137
138 static void service_unwatch_main_pid(Service *s) {
139 assert(s);
140
141 if (s->main_pid <= 0)
142 return;
143
144 unit_unwatch_pid(UNIT(s), s->main_pid);
145 s->main_pid = 0;
146 }
147
148 static int service_set_main_pid(Service *s, pid_t pid) {
149 pid_t ppid;
150
151 assert(s);
152
153 if (pid <= 1)
154 return -EINVAL;
155
156 if (pid == getpid())
157 return -EINVAL;
158
159 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid())
160 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
161 s->meta.id, (unsigned long) pid);
162
163 s->main_pid = pid;
164 s->main_pid_known = true;
165
166 exec_status_start(&s->main_exec_status, pid);
167
168 return 0;
169 }
170
171 static void service_close_socket_fd(Service *s) {
172 assert(s);
173
174 if (s->socket_fd < 0)
175 return;
176
177 close_nointr_nofail(s->socket_fd);
178 s->socket_fd = -1;
179 }
180
181 static void service_connection_unref(Service *s) {
182 assert(s);
183
184 if (!s->accept_socket)
185 return;
186
187 socket_connection_unref(s->accept_socket);
188 s->accept_socket = NULL;
189 }
190
191 static void service_done(Unit *u) {
192 Service *s = SERVICE(u);
193
194 assert(s);
195
196 free(s->pid_file);
197 s->pid_file = NULL;
198
199 #ifdef HAVE_SYSV_COMPAT
200 free(s->sysv_path);
201 s->sysv_path = NULL;
202
203 free(s->sysv_runlevels);
204 s->sysv_runlevels = NULL;
205 #endif
206
207 free(s->status_text);
208 s->status_text = NULL;
209
210 exec_context_done(&s->exec_context);
211 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
212 s->control_command = NULL;
213
214 /* This will leak a process, but at least no memory or any of
215 * our resources */
216 service_unwatch_main_pid(s);
217 service_unwatch_control_pid(s);
218
219 if (s->bus_name) {
220 unit_unwatch_bus_name(UNIT(u), s->bus_name);
221 free(s->bus_name);
222 s->bus_name = NULL;
223 }
224
225 service_close_socket_fd(s);
226 service_connection_unref(s);
227
228 set_free(s->configured_sockets);
229
230 unit_unwatch_timer(u, &s->timer_watch);
231 }
232
233 #ifdef HAVE_SYSV_COMPAT
234 static char *sysv_translate_name(const char *name) {
235 char *r;
236
237 if (!(r = new(char, strlen(name) + sizeof(".service"))))
238 return NULL;
239
240 if (startswith(name, "boot."))
241 /* Drop SuSE-style boot. prefix */
242 strcpy(stpcpy(r, name + 5), ".service");
243 else if (endswith(name, ".sh"))
244 /* Drop Debian-style .sh suffix */
245 strcpy(stpcpy(r, name) - 3, ".service");
246 #ifdef TARGET_ARCH
247 else if (startswith(name, "@"))
248 /* Drop Arch-style background prefix */
249 strcpy(stpcpy(r, name + 1), ".service");
250 #endif
251 else
252 /* Normal init scripts */
253 strcpy(stpcpy(r, name), ".service");
254
255 return r;
256 }
257
258 static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
259
260 /* We silently ignore the $ prefix here. According to the LSB
261 * spec it simply indicates whether something is a
262 * standardized name or a distribution-specific one. Since we
263 * just follow what already exists and do not introduce new
264 * uses or names we don't care who introduced a new name. */
265
266 static const char * const table[] = {
267 /* LSB defined facilities */
268 "local_fs", SPECIAL_LOCAL_FS_TARGET,
269 "network", SPECIAL_NETWORK_TARGET,
270 "named", SPECIAL_NSS_LOOKUP_TARGET,
271 "portmap", SPECIAL_RPCBIND_TARGET,
272 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
273 "syslog", SPECIAL_SYSLOG_TARGET,
274 "time", SPECIAL_RTC_SET_TARGET,
275
276 /* Debian extensions */
277 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
278 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
279 #endif
280 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
281 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
282
283 #ifdef TARGET_FEDORA
284 /* Fedora extensions */
285 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
286 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
287 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
288 #endif
289
290 /* SuSE extensions */
291 "null", NULL
292
293 };
294
295 unsigned i;
296 char *r;
297 const char *n;
298
299 assert(name);
300 assert(_r);
301
302 n = *name == '$' ? name + 1 : name;
303
304 for (i = 0; i < ELEMENTSOF(table); i += 2) {
305
306 if (!streq(table[i], n))
307 continue;
308
309 if (!table[i+1])
310 return 0;
311
312 if (!(r = strdup(table[i+1])))
313 return -ENOMEM;
314
315 goto finish;
316 }
317
318 /* If we don't know this name, fallback heuristics to figure
319 * out whether something is a target or a service alias. */
320
321 if (*name == '$')
322 /* Facilities starting with $ are most likely targets */
323 r = unit_name_build(n, NULL, ".target");
324 else if (filename && streq(name, filename))
325 /* Names equalling the file name of the services are redundant */
326 return 0;
327 else
328 /* Everything else we assume to be normal service names */
329 r = sysv_translate_name(n);
330
331 if (!r)
332 return -ENOMEM;
333
334 finish:
335
336 if (_r)
337 *_r = r;
338
339 return 1;
340 }
341
342 static int sysv_fix_order(Service *s) {
343 Meta *other;
344 int r;
345
346 assert(s);
347
348 if (s->sysv_start_priority < 0)
349 return 0;
350
351 /* For each pair of services where at least one lacks a LSB
352 * header, we use the start priority value to order things. */
353
354 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
355 Service *t;
356 UnitDependency d;
357 bool special_s, special_t;
358
359 t = (Service*) other;
360
361 if (s == t)
362 continue;
363
364 if (t->meta.load_state != UNIT_LOADED)
365 continue;
366
367 if (t->sysv_start_priority < 0)
368 continue;
369
370 /* If both units have modern headers we don't care
371 * about the priorities */
372 if ((s->meta.fragment_path || s->sysv_has_lsb) &&
373 (t->meta.fragment_path || t->sysv_has_lsb))
374 continue;
375
376 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
377 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
378
379 if (special_t && !special_s)
380 d = UNIT_AFTER;
381 else if (special_s && !special_t)
382 d = UNIT_BEFORE;
383 else if (t->sysv_start_priority < s->sysv_start_priority)
384 d = UNIT_AFTER;
385 else if (t->sysv_start_priority > s->sysv_start_priority)
386 d = UNIT_BEFORE;
387 else
388 continue;
389
390 /* FIXME: Maybe we should compare the name here lexicographically? */
391
392 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
393 return r;
394 }
395
396 return 0;
397 }
398
399 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
400 ExecCommand *c;
401
402 if (!(c = new0(ExecCommand, 1)))
403 return NULL;
404
405 if (!(c->path = strdup(path))) {
406 free(c);
407 return NULL;
408 }
409
410 if (!(c->argv = strv_new(path, arg1, NULL))) {
411 free(c->path);
412 free(c);
413 return NULL;
414 }
415
416 return c;
417 }
418
419 static int sysv_exec_commands(Service *s) {
420 ExecCommand *c;
421
422 assert(s);
423 assert(s->sysv_path);
424
425 if (!(c = exec_command_new(s->sysv_path, "start")))
426 return -ENOMEM;
427 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
428
429 if (!(c = exec_command_new(s->sysv_path, "stop")))
430 return -ENOMEM;
431 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
432
433 if (!(c = exec_command_new(s->sysv_path, "reload")))
434 return -ENOMEM;
435 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
436
437 return 0;
438 }
439
440 static int service_load_sysv_path(Service *s, const char *path) {
441 FILE *f;
442 Unit *u;
443 unsigned line = 0;
444 int r;
445 enum {
446 NORMAL,
447 DESCRIPTION,
448 LSB,
449 LSB_DESCRIPTION
450 } state = NORMAL;
451 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
452
453 assert(s);
454 assert(path);
455
456 u = UNIT(s);
457
458 if (!(f = fopen(path, "re"))) {
459 r = errno == ENOENT ? 0 : -errno;
460 goto finish;
461 }
462
463 free(s->sysv_path);
464 if (!(s->sysv_path = strdup(path))) {
465 r = -ENOMEM;
466 goto finish;
467 }
468
469 while (!feof(f)) {
470 char l[LINE_MAX], *t;
471
472 if (!fgets(l, sizeof(l), f)) {
473 if (feof(f))
474 break;
475
476 r = -errno;
477 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
478 goto finish;
479 }
480
481 line++;
482
483 t = strstrip(l);
484 if (*t != '#')
485 continue;
486
487 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
488 state = LSB;
489 s->sysv_has_lsb = true;
490 continue;
491 }
492
493 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
494 state = NORMAL;
495 continue;
496 }
497
498 t++;
499 t += strspn(t, WHITESPACE);
500
501 if (state == NORMAL) {
502
503 /* Try to parse Red Hat style chkconfig headers */
504
505 if (startswith_no_case(t, "chkconfig:")) {
506 int start_priority;
507 char runlevels[16], *k;
508
509 state = NORMAL;
510
511 if (sscanf(t+10, "%15s %i %*i",
512 runlevels,
513 &start_priority) != 2) {
514
515 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
516 continue;
517 }
518
519 /* A start priority gathered from the
520 * symlink farms is preferred over the
521 * data from the LSB header. */
522 if (start_priority < 0 || start_priority > 99)
523 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
524 else if (s->sysv_start_priority < 0)
525 s->sysv_start_priority = start_priority;
526
527 char_array_0(runlevels);
528 k = delete_chars(runlevels, WHITESPACE "-");
529
530 if (k[0]) {
531 char *d;
532
533 if (!(d = strdup(k))) {
534 r = -ENOMEM;
535 goto finish;
536 }
537
538 free(s->sysv_runlevels);
539 s->sysv_runlevels = d;
540 }
541
542 } else if (startswith_no_case(t, "description:")) {
543
544 size_t k = strlen(t);
545 char *d;
546 const char *j;
547
548 if (t[k-1] == '\\') {
549 state = DESCRIPTION;
550 t[k-1] = 0;
551 }
552
553 if ((j = strstrip(t+12)) && *j) {
554 if (!(d = strdup(j))) {
555 r = -ENOMEM;
556 goto finish;
557 }
558 } else
559 d = NULL;
560
561 free(chkconfig_description);
562 chkconfig_description = d;
563
564 } else if (startswith_no_case(t, "pidfile:")) {
565
566 char *fn;
567
568 state = NORMAL;
569
570 fn = strstrip(t+8);
571 if (!path_is_absolute(fn)) {
572 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
573 continue;
574 }
575
576 if (!(fn = strdup(fn))) {
577 r = -ENOMEM;
578 goto finish;
579 }
580
581 free(s->pid_file);
582 s->pid_file = fn;
583 }
584
585 } else if (state == DESCRIPTION) {
586
587 /* Try to parse Red Hat style description
588 * continuation */
589
590 size_t k = strlen(t);
591 char *j;
592
593 if (t[k-1] == '\\')
594 t[k-1] = 0;
595 else
596 state = NORMAL;
597
598 if ((j = strstrip(t)) && *j) {
599 char *d = NULL;
600
601 if (chkconfig_description)
602 asprintf(&d, "%s %s", chkconfig_description, j);
603 else
604 d = strdup(j);
605
606 if (!d) {
607 r = -ENOMEM;
608 goto finish;
609 }
610
611 free(chkconfig_description);
612 chkconfig_description = d;
613 }
614
615 } else if (state == LSB || state == LSB_DESCRIPTION) {
616
617 if (startswith_no_case(t, "Provides:")) {
618 char *i, *w;
619 size_t z;
620
621 state = LSB;
622
623 FOREACH_WORD_QUOTED(w, z, t+9, i) {
624 char *n, *m;
625
626 if (!(n = strndup(w, z))) {
627 r = -ENOMEM;
628 goto finish;
629 }
630
631 r = sysv_translate_facility(n, file_name_from_path(path), &m);
632 free(n);
633
634 if (r < 0)
635 goto finish;
636
637 if (r == 0)
638 continue;
639
640 if (unit_name_to_type(m) == UNIT_SERVICE)
641 r = unit_add_name(u, m);
642 else {
643 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
644
645 if (s->sysv_enabled) {
646 int k;
647
648 if ((k = unit_add_dependency_by_name_inverse(u, UNIT_WANTS, m, NULL, true)) < 0)
649 r = k;
650 }
651 }
652
653 if (r < 0)
654 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
655
656 free(m);
657 }
658
659 } else if (startswith_no_case(t, "Required-Start:") ||
660 startswith_no_case(t, "Should-Start:") ||
661 startswith_no_case(t, "X-Start-Before:") ||
662 startswith_no_case(t, "X-Start-After:")) {
663 char *i, *w;
664 size_t z;
665
666 state = LSB;
667
668 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
669 char *n, *m;
670
671 if (!(n = strndup(w, z))) {
672 r = -ENOMEM;
673 goto finish;
674 }
675
676 r = sysv_translate_facility(n, file_name_from_path(path), &m);
677 free(n);
678
679 if (r < 0)
680 goto finish;
681
682 if (r == 0)
683 continue;
684
685 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
686
687 if (r < 0)
688 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
689
690 free(m);
691 }
692 } else if (startswith_no_case(t, "Default-Start:")) {
693 char *k, *d;
694
695 state = LSB;
696
697 k = delete_chars(t+14, WHITESPACE "-");
698
699 if (k[0] != 0) {
700 if (!(d = strdup(k))) {
701 r = -ENOMEM;
702 goto finish;
703 }
704
705 free(s->sysv_runlevels);
706 s->sysv_runlevels = d;
707 }
708
709 } else if (startswith_no_case(t, "Description:")) {
710 char *d, *j;
711
712 state = LSB_DESCRIPTION;
713
714 if ((j = strstrip(t+12)) && *j) {
715 if (!(d = strdup(j))) {
716 r = -ENOMEM;
717 goto finish;
718 }
719 } else
720 d = NULL;
721
722 free(long_description);
723 long_description = d;
724
725 } else if (startswith_no_case(t, "Short-Description:")) {
726 char *d, *j;
727
728 state = LSB;
729
730 if ((j = strstrip(t+18)) && *j) {
731 if (!(d = strdup(j))) {
732 r = -ENOMEM;
733 goto finish;
734 }
735 } else
736 d = NULL;
737
738 free(short_description);
739 short_description = d;
740
741 } else if (startswith_no_case(t, "X-Interactive:")) {
742 int b;
743
744 if ((b = parse_boolean(strstrip(t+14))) < 0) {
745 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
746 continue;
747 }
748
749 if (b)
750 s->exec_context.std_input = EXEC_INPUT_TTY;
751 else
752 s->exec_context.std_input = EXEC_INPUT_NULL;
753
754 } else if (state == LSB_DESCRIPTION) {
755
756 if (startswith(l, "#\t") || startswith(l, "# ")) {
757 char *j;
758
759 if ((j = strstrip(t)) && *j) {
760 char *d = NULL;
761
762 if (long_description)
763 asprintf(&d, "%s %s", long_description, t);
764 else
765 d = strdup(j);
766
767 if (!d) {
768 r = -ENOMEM;
769 goto finish;
770 }
771
772 free(long_description);
773 long_description = d;
774 }
775
776 } else
777 state = LSB;
778 }
779 }
780 }
781
782 if ((r = sysv_exec_commands(s)) < 0)
783 goto finish;
784
785 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
786 /* If there a runlevels configured for this service
787 * but none of the standard ones, then we assume this
788 * is some special kind of service (which might be
789 * needed for early boot) and don't create any links
790 * to it. */
791
792 s->meta.default_dependencies = false;
793
794 /* Don't timeout special services during boot (like fsck) */
795 s->timeout_usec = 0;
796 } else
797 s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC;
798
799 /* Special setting for all SysV services */
800 s->type = SERVICE_FORKING;
801 s->remain_after_exit = true;
802 s->restart = SERVICE_RESTART_NO;
803 s->exec_context.std_output =
804 (s->meta.manager->sysv_console || s->exec_context.std_input == EXEC_INPUT_TTY)
805 ? EXEC_OUTPUT_TTY : EXEC_OUTPUT_NULL;
806 s->exec_context.kill_mode = KILL_PROCESS_GROUP;
807
808 /* We use the long description only if
809 * no short description is set. */
810
811 if (short_description)
812 description = short_description;
813 else if (chkconfig_description)
814 description = chkconfig_description;
815 else if (long_description)
816 description = long_description;
817 else
818 description = NULL;
819
820 if (description) {
821 char *d;
822
823 if (!(d = strappend("LSB: ", description))) {
824 r = -ENOMEM;
825 goto finish;
826 }
827
828 u->meta.description = d;
829 }
830
831 u->meta.load_state = UNIT_LOADED;
832 r = 0;
833
834 finish:
835
836 if (f)
837 fclose(f);
838
839 free(short_description);
840 free(long_description);
841 free(chkconfig_description);
842
843 return r;
844 }
845
846 static int service_load_sysv_name(Service *s, const char *name) {
847 char **p;
848
849 assert(s);
850 assert(name);
851
852 /* For SysV services we strip the boot. or .sh
853 * prefixes/suffixes. */
854 if (startswith(name, "boot.") ||
855 endswith(name, ".sh.service"))
856 return -ENOENT;
857
858 STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
859 char *path;
860 int r;
861
862 if (asprintf(&path, "%s/%s", *p, name) < 0)
863 return -ENOMEM;
864
865 assert(endswith(path, ".service"));
866 path[strlen(path)-8] = 0;
867
868 r = service_load_sysv_path(s, path);
869
870 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
871 /* Try Debian style xxx.sh source'able init scripts */
872 strcat(path, ".sh");
873 r = service_load_sysv_path(s, path);
874 }
875
876 free(path);
877
878 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
879 /* Try SUSE style boot.xxx init scripts */
880
881 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
882 return -ENOMEM;
883
884 path[strlen(path)-8] = 0;
885 r = service_load_sysv_path(s, path);
886 free(path);
887 }
888
889 if (r < 0)
890 return r;
891
892 if ((s->meta.load_state != UNIT_STUB))
893 break;
894 }
895
896 return 0;
897 }
898
899 static int service_load_sysv(Service *s) {
900 const char *t;
901 Iterator i;
902 int r;
903
904 assert(s);
905
906 /* Load service data from SysV init scripts, preferably with
907 * LSB headers ... */
908
909 if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
910 return 0;
911
912 if ((t = s->meta.id))
913 if ((r = service_load_sysv_name(s, t)) < 0)
914 return r;
915
916 if (s->meta.load_state == UNIT_STUB)
917 SET_FOREACH(t, s->meta.names, i) {
918 if (t == s->meta.id)
919 continue;
920
921 if ((r = service_load_sysv_name(s, t)) < 0)
922 return r;
923
924 if (s->meta.load_state != UNIT_STUB)
925 break;
926 }
927
928 return 0;
929 }
930 #endif
931
932 static int fsck_fix_order(Service *s) {
933 Meta *other;
934 int r;
935
936 assert(s);
937
938 if (s->fsck_passno <= 0)
939 return 0;
940
941 /* For each pair of services where both have an fsck priority
942 * we order things based on it. */
943
944 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
945 Service *t;
946 UnitDependency d;
947
948 t = (Service*) other;
949
950 if (s == t)
951 continue;
952
953 if (t->meta.load_state != UNIT_LOADED)
954 continue;
955
956 if (t->fsck_passno <= 0)
957 continue;
958
959 if (t->fsck_passno < s->fsck_passno)
960 d = UNIT_AFTER;
961 else if (t->fsck_passno > s->fsck_passno)
962 d = UNIT_BEFORE;
963 else
964 continue;
965
966 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
967 return r;
968 }
969
970 return 0;
971 }
972
973 static int service_verify(Service *s) {
974 assert(s);
975
976 if (s->meta.load_state != UNIT_LOADED)
977 return 0;
978
979 if (!s->exec_command[SERVICE_EXEC_START]) {
980 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
981 return -EINVAL;
982 }
983
984 if (s->type != SERVICE_ONESHOT &&
985 s->exec_command[SERVICE_EXEC_START]->command_next) {
986 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id);
987 return -EINVAL;
988 }
989
990 if (s->type == SERVICE_DBUS && !s->bus_name) {
991 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
992 return -EINVAL;
993 }
994
995 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
996 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
997 return -EINVAL;
998 }
999
1000 return 0;
1001 }
1002
1003 static int service_add_default_dependencies(Service *s) {
1004 int r;
1005
1006 assert(s);
1007
1008 /* Add a number of automatic dependencies useful for the
1009 * majority of services. */
1010
1011 /* First, pull in base system */
1012 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
1013
1014 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1015 return r;
1016
1017 } else if (s->meta.manager->running_as == MANAGER_SESSION) {
1018
1019 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1020 return r;
1021 }
1022
1023 /* Second, activate normal shutdown */
1024 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTED_BY, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1025 }
1026
1027 static int service_load(Unit *u) {
1028 int r;
1029 Service *s = SERVICE(u);
1030
1031 assert(s);
1032
1033 /* Load a .service file */
1034 if ((r = unit_load_fragment(u)) < 0)
1035 return r;
1036
1037 #ifdef HAVE_SYSV_COMPAT
1038 /* Load a classic init script as a fallback, if we couldn't find anything */
1039 if (u->meta.load_state == UNIT_STUB)
1040 if ((r = service_load_sysv(s)) < 0)
1041 return r;
1042 #endif
1043
1044 /* Still nothing found? Then let's give up */
1045 if (u->meta.load_state == UNIT_STUB)
1046 return -ENOENT;
1047
1048 /* We were able to load something, then let's add in the
1049 * dropin directories. */
1050 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1051 return r;
1052
1053 /* This is a new unit? Then let's add in some extras */
1054 if (u->meta.load_state == UNIT_LOADED) {
1055 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1056 return r;
1057
1058 if ((r = unit_add_default_cgroup(u)) < 0)
1059 return r;
1060
1061 #ifdef HAVE_SYSV_COMPAT
1062 if ((r = sysv_fix_order(s)) < 0)
1063 return r;
1064 #endif
1065
1066 if ((r = fsck_fix_order(s)) < 0)
1067 return r;
1068
1069 if (s->bus_name)
1070 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1071 return r;
1072
1073 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1074 s->notify_access = NOTIFY_MAIN;
1075
1076 if (s->type == SERVICE_DBUS || s->bus_name)
1077 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_TARGET, NULL, true)) < 0)
1078 return r;
1079
1080 if (s->meta.default_dependencies)
1081 if ((r = service_add_default_dependencies(s)) < 0)
1082 return r;
1083 }
1084
1085 return service_verify(s);
1086 }
1087
1088 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1089
1090 ServiceExecCommand c;
1091 Service *s = SERVICE(u);
1092 const char *prefix2;
1093 char *p2;
1094
1095 assert(s);
1096
1097 p2 = strappend(prefix, "\t");
1098 prefix2 = p2 ? p2 : prefix;
1099
1100 fprintf(f,
1101 "%sService State: %s\n"
1102 "%sPermissionsStartOnly: %s\n"
1103 "%sRootDirectoryStartOnly: %s\n"
1104 "%sRemainAfterExit: %s\n"
1105 "%sType: %s\n"
1106 "%sRestart: %s\n"
1107 "%sNotifyAccess: %s\n",
1108 prefix, service_state_to_string(s->state),
1109 prefix, yes_no(s->permissions_start_only),
1110 prefix, yes_no(s->root_directory_start_only),
1111 prefix, yes_no(s->remain_after_exit),
1112 prefix, service_type_to_string(s->type),
1113 prefix, service_restart_to_string(s->restart),
1114 prefix, notify_access_to_string(s->notify_access));
1115
1116 if (s->control_pid > 0)
1117 fprintf(f,
1118 "%sControl PID: %lu\n",
1119 prefix, (unsigned long) s->control_pid);
1120
1121 if (s->main_pid > 0)
1122 fprintf(f,
1123 "%sMain PID: %lu\n",
1124 prefix, (unsigned long) s->main_pid);
1125
1126 if (s->pid_file)
1127 fprintf(f,
1128 "%sPIDFile: %s\n",
1129 prefix, s->pid_file);
1130
1131 if (s->bus_name)
1132 fprintf(f,
1133 "%sBusName: %s\n"
1134 "%sBus Name Good: %s\n",
1135 prefix, s->bus_name,
1136 prefix, yes_no(s->bus_name_good));
1137
1138 exec_context_dump(&s->exec_context, f, prefix);
1139
1140 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1141
1142 if (!s->exec_command[c])
1143 continue;
1144
1145 fprintf(f, "%s-> %s:\n",
1146 prefix, service_exec_command_to_string(c));
1147
1148 exec_command_dump_list(s->exec_command[c], f, prefix2);
1149 }
1150
1151 #ifdef HAVE_SYSV_COMPAT
1152 if (s->sysv_path)
1153 fprintf(f,
1154 "%sSysV Init Script Path: %s\n"
1155 "%sSysV Init Script has LSB Header: %s\n"
1156 "%sSysVEnabled: %s\n",
1157 prefix, s->sysv_path,
1158 prefix, yes_no(s->sysv_has_lsb),
1159 prefix, yes_no(s->sysv_enabled));
1160
1161 if (s->sysv_start_priority >= 0)
1162 fprintf(f,
1163 "%sSysVStartPriority: %i\n",
1164 prefix, s->sysv_start_priority);
1165
1166 if (s->sysv_runlevels)
1167 fprintf(f, "%sSysVRunLevels: %s\n",
1168 prefix, s->sysv_runlevels);
1169 #endif
1170
1171 if (s->fsck_passno > 0)
1172 fprintf(f,
1173 "%sFsckPassNo: %i\n",
1174 prefix, s->fsck_passno);
1175
1176 if (s->status_text)
1177 fprintf(f, "%sStatus Text: %s\n",
1178 prefix, s->status_text);
1179
1180 free(p2);
1181 }
1182
1183 static int service_load_pid_file(Service *s) {
1184 char *k;
1185 int r;
1186 pid_t pid;
1187
1188 assert(s);
1189
1190 if (s->main_pid_known)
1191 return 0;
1192
1193 assert(s->main_pid <= 0);
1194
1195 if (!s->pid_file)
1196 return -ENOENT;
1197
1198 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
1199 return r;
1200
1201 r = parse_pid(k, &pid);
1202 free(k);
1203
1204 if (r < 0)
1205 return r;
1206
1207 if (kill(pid, 0) < 0 && errno != EPERM) {
1208 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1209 (unsigned long) pid, s->pid_file);
1210 return -ESRCH;
1211 }
1212
1213 if ((r = service_set_main_pid(s, pid)) < 0)
1214 return r;
1215
1216 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1217 /* FIXME: we need to do something here */
1218 return r;
1219
1220 return 0;
1221 }
1222
1223 static int service_get_sockets(Service *s, Set **_set) {
1224 Set *set;
1225 Iterator i;
1226 char *t;
1227 int r;
1228
1229 assert(s);
1230 assert(_set);
1231
1232 if (s->socket_fd >= 0)
1233 return 0;
1234
1235 if (!set_isempty(s->configured_sockets))
1236 return 0;
1237
1238 /* Collects all Socket objects that belong to this
1239 * service. Note that a service might have multiple sockets
1240 * via multiple names. */
1241
1242 if (!(set = set_new(NULL, NULL)))
1243 return -ENOMEM;
1244
1245 SET_FOREACH(t, s->meta.names, i) {
1246 char *k;
1247 Unit *p;
1248
1249 /* Look for all socket objects that go by any of our
1250 * units and collect their fds */
1251
1252 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1253 r = -ENOMEM;
1254 goto fail;
1255 }
1256
1257 p = manager_get_unit(s->meta.manager, k);
1258 free(k);
1259
1260 if (!p)
1261 continue;
1262
1263 if ((r = set_put(set, p)) < 0)
1264 goto fail;
1265 }
1266
1267 *_set = set;
1268 return 0;
1269
1270 fail:
1271 set_free(set);
1272 return r;
1273 }
1274
1275 static int service_notify_sockets_dead(Service *s) {
1276 Iterator i;
1277 Set *set, *free_set = NULL;
1278 Socket *sock;
1279 int r;
1280
1281 assert(s);
1282
1283 /* Notifies all our sockets when we die */
1284
1285 if (s->socket_fd >= 0)
1286 return 0;
1287
1288 if (!set_isempty(s->configured_sockets))
1289 set = s->configured_sockets;
1290 else {
1291 if ((r = service_get_sockets(s, &free_set)) < 0)
1292 return r;
1293
1294 set = free_set;
1295 }
1296
1297 SET_FOREACH(sock, set, i)
1298 socket_notify_service_dead(sock);
1299
1300 set_free(free_set);
1301
1302 return 0;
1303 }
1304
1305 static void service_set_state(Service *s, ServiceState state) {
1306 ServiceState old_state;
1307 assert(s);
1308
1309 old_state = s->state;
1310 s->state = state;
1311
1312 if (state != SERVICE_START_PRE &&
1313 state != SERVICE_START &&
1314 state != SERVICE_START_POST &&
1315 state != SERVICE_RELOAD &&
1316 state != SERVICE_STOP &&
1317 state != SERVICE_STOP_SIGTERM &&
1318 state != SERVICE_STOP_SIGKILL &&
1319 state != SERVICE_STOP_POST &&
1320 state != SERVICE_FINAL_SIGTERM &&
1321 state != SERVICE_FINAL_SIGKILL &&
1322 state != SERVICE_AUTO_RESTART)
1323 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1324
1325 if (state != SERVICE_START &&
1326 state != SERVICE_START_POST &&
1327 state != SERVICE_RUNNING &&
1328 state != SERVICE_RELOAD &&
1329 state != SERVICE_STOP &&
1330 state != SERVICE_STOP_SIGTERM &&
1331 state != SERVICE_STOP_SIGKILL)
1332 service_unwatch_main_pid(s);
1333
1334 if (state != SERVICE_START_PRE &&
1335 state != SERVICE_START &&
1336 state != SERVICE_START_POST &&
1337 state != SERVICE_RELOAD &&
1338 state != SERVICE_STOP &&
1339 state != SERVICE_STOP_SIGTERM &&
1340 state != SERVICE_STOP_SIGKILL &&
1341 state != SERVICE_STOP_POST &&
1342 state != SERVICE_FINAL_SIGTERM &&
1343 state != SERVICE_FINAL_SIGKILL) {
1344 service_unwatch_control_pid(s);
1345 s->control_command = NULL;
1346 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1347 }
1348
1349 if (state == SERVICE_DEAD ||
1350 state == SERVICE_STOP ||
1351 state == SERVICE_STOP_SIGTERM ||
1352 state == SERVICE_STOP_SIGKILL ||
1353 state == SERVICE_STOP_POST ||
1354 state == SERVICE_FINAL_SIGTERM ||
1355 state == SERVICE_FINAL_SIGKILL ||
1356 state == SERVICE_FAILED ||
1357 state == SERVICE_AUTO_RESTART)
1358 service_notify_sockets_dead(s);
1359
1360 if (state != SERVICE_START_PRE &&
1361 state != SERVICE_START &&
1362 state != SERVICE_START_POST &&
1363 state != SERVICE_RUNNING &&
1364 state != SERVICE_RELOAD &&
1365 state != SERVICE_STOP &&
1366 state != SERVICE_STOP_SIGTERM &&
1367 state != SERVICE_STOP_SIGKILL &&
1368 state != SERVICE_STOP_POST &&
1369 state != SERVICE_FINAL_SIGTERM &&
1370 state != SERVICE_FINAL_SIGKILL &&
1371 !(state == SERVICE_DEAD && s->meta.job)) {
1372 service_close_socket_fd(s);
1373 service_connection_unref(s);
1374 }
1375
1376 /* For the inactive states unit_notify() will trim the cgroup,
1377 * but for exit we have to do that ourselves... */
1378 if (state == SERVICE_EXITED)
1379 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1380
1381 if (old_state != state)
1382 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1383
1384 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
1385 }
1386
1387 static int service_coldplug(Unit *u) {
1388 Service *s = SERVICE(u);
1389 int r;
1390
1391 assert(s);
1392 assert(s->state == SERVICE_DEAD);
1393
1394 if (s->deserialized_state != s->state) {
1395
1396 if (s->deserialized_state == SERVICE_START_PRE ||
1397 s->deserialized_state == SERVICE_START ||
1398 s->deserialized_state == SERVICE_START_POST ||
1399 s->deserialized_state == SERVICE_RELOAD ||
1400 s->deserialized_state == SERVICE_STOP ||
1401 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1402 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1403 s->deserialized_state == SERVICE_STOP_POST ||
1404 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1405 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1406 s->deserialized_state == SERVICE_AUTO_RESTART) {
1407
1408 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1409 usec_t k;
1410
1411 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1412
1413 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1414 return r;
1415 }
1416 }
1417
1418 if ((s->deserialized_state == SERVICE_START &&
1419 (s->type == SERVICE_FORKING ||
1420 s->type == SERVICE_DBUS ||
1421 s->type == SERVICE_ONESHOT ||
1422 s->type == SERVICE_NOTIFY)) ||
1423 s->deserialized_state == SERVICE_START_POST ||
1424 s->deserialized_state == SERVICE_RUNNING ||
1425 s->deserialized_state == SERVICE_RELOAD ||
1426 s->deserialized_state == SERVICE_STOP ||
1427 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1428 s->deserialized_state == SERVICE_STOP_SIGKILL)
1429 if (s->main_pid > 0)
1430 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1431 return r;
1432
1433 if (s->deserialized_state == SERVICE_START_PRE ||
1434 s->deserialized_state == SERVICE_START ||
1435 s->deserialized_state == SERVICE_START_POST ||
1436 s->deserialized_state == SERVICE_RELOAD ||
1437 s->deserialized_state == SERVICE_STOP ||
1438 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1439 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1440 s->deserialized_state == SERVICE_STOP_POST ||
1441 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1442 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1443 if (s->control_pid > 0)
1444 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1445 return r;
1446
1447 service_set_state(s, s->deserialized_state);
1448 }
1449
1450 return 0;
1451 }
1452
1453 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1454 Iterator i;
1455 int r;
1456 int *rfds = NULL;
1457 unsigned rn_fds = 0;
1458 Set *set, *free_set = NULL;
1459 Socket *sock;
1460
1461 assert(s);
1462 assert(fds);
1463 assert(n_fds);
1464
1465 if (s->socket_fd >= 0)
1466 return 0;
1467
1468 if (!set_isempty(s->configured_sockets))
1469 set = s->configured_sockets;
1470 else {
1471 if ((r = service_get_sockets(s, &free_set)) < 0)
1472 return r;
1473
1474 set = free_set;
1475 }
1476
1477 SET_FOREACH(sock, set, i) {
1478 int *cfds;
1479 unsigned cn_fds;
1480
1481 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1482 goto fail;
1483
1484 if (!cfds)
1485 continue;
1486
1487 if (!rfds) {
1488 rfds = cfds;
1489 rn_fds = cn_fds;
1490 } else {
1491 int *t;
1492
1493 if (!(t = new(int, rn_fds+cn_fds))) {
1494 free(cfds);
1495 r = -ENOMEM;
1496 goto fail;
1497 }
1498
1499 memcpy(t, rfds, rn_fds);
1500 memcpy(t+rn_fds, cfds, cn_fds);
1501 free(rfds);
1502 free(cfds);
1503
1504 rfds = t;
1505 rn_fds = rn_fds+cn_fds;
1506 }
1507 }
1508
1509 *fds = rfds;
1510 *n_fds = rn_fds;
1511
1512 set_free(free_set);
1513
1514 return 0;
1515
1516 fail:
1517 set_free(set);
1518 free(rfds);
1519
1520 return r;
1521 }
1522
1523 static int service_spawn(
1524 Service *s,
1525 ExecCommand *c,
1526 bool timeout,
1527 bool pass_fds,
1528 bool apply_permissions,
1529 bool apply_chroot,
1530 bool apply_tty_stdin,
1531 bool set_notify_socket,
1532 pid_t *_pid) {
1533
1534 pid_t pid;
1535 int r;
1536 int *fds = NULL, *fdsbuf = NULL;
1537 unsigned n_fds = 0, n_env = 0;
1538 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1539
1540 assert(s);
1541 assert(c);
1542 assert(_pid);
1543
1544 if (pass_fds ||
1545 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1546 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1547 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1548
1549 if (s->socket_fd >= 0) {
1550 fds = &s->socket_fd;
1551 n_fds = 1;
1552 } else {
1553 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1554 goto fail;
1555
1556 fds = fdsbuf;
1557 }
1558 }
1559
1560 if (timeout && s->timeout_usec) {
1561 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1562 goto fail;
1563 } else
1564 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1565
1566 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1567 r = -ENOMEM;
1568 goto fail;
1569 }
1570
1571 if (!(our_env = new0(char*, 4))) {
1572 r = -ENOMEM;
1573 goto fail;
1574 }
1575
1576 if (set_notify_socket)
1577 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
1578 r = -ENOMEM;
1579 goto fail;
1580 }
1581
1582 if (s->main_pid > 0)
1583 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1584 r = -ENOMEM;
1585 goto fail;
1586 }
1587
1588 #ifdef HAVE_SYSV_COMPAT
1589 /* Make sure we set TERM=linux for SysV scripts, since some
1590 * require it to be set from the kernel */
1591 if (s->sysv_path && !strv_env_get(s->meta.manager->environment, "TERM"))
1592 if (!(our_env[n_env++] = strdup("TERM=linux"))) {
1593 r = -ENOMEM;
1594 goto fail;
1595 }
1596 #endif
1597
1598 if (!(final_env = strv_env_merge(2,
1599 s->meta.manager->environment,
1600 our_env,
1601 NULL))) {
1602 r = -ENOMEM;
1603 goto fail;
1604 }
1605
1606 r = exec_spawn(c,
1607 argv,
1608 &s->exec_context,
1609 fds, n_fds,
1610 final_env,
1611 apply_permissions,
1612 apply_chroot,
1613 apply_tty_stdin,
1614 s->meta.manager->confirm_spawn,
1615 s->meta.cgroup_bondings,
1616 &pid);
1617
1618 if (r < 0)
1619 goto fail;
1620
1621
1622 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1623 /* FIXME: we need to do something here */
1624 goto fail;
1625
1626 free(fdsbuf);
1627 strv_free(argv);
1628 strv_free(our_env);
1629 strv_free(final_env);
1630
1631 *_pid = pid;
1632
1633 return 0;
1634
1635 fail:
1636 free(fdsbuf);
1637 strv_free(argv);
1638 strv_free(our_env);
1639 strv_free(final_env);
1640
1641 if (timeout)
1642 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1643
1644 return r;
1645 }
1646
1647 static int main_pid_good(Service *s) {
1648 assert(s);
1649
1650 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1651 * don't know */
1652
1653 /* If we know the pid file, then lets just check if it is
1654 * still valid */
1655 if (s->main_pid_known)
1656 return s->main_pid > 0;
1657
1658 /* We don't know the pid */
1659 return -EAGAIN;
1660 }
1661
1662 static int control_pid_good(Service *s) {
1663 assert(s);
1664
1665 return s->control_pid > 0;
1666 }
1667
1668 static int cgroup_good(Service *s) {
1669 int r;
1670
1671 assert(s);
1672
1673 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1674 return r;
1675
1676 return !r;
1677 }
1678
1679 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1680 int r;
1681 assert(s);
1682
1683 if (!success)
1684 s->failure = true;
1685
1686 if (allow_restart &&
1687 !s->forbid_restart &&
1688 (s->restart == SERVICE_RESTART_ALWAYS ||
1689 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) ||
1690 (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) ||
1691 (s->restart == SERVICE_RESTART_ON_ABORT && s->failure &&
1692 (s->main_exec_status.code == CLD_KILLED ||
1693 s->main_exec_status.code == CLD_DUMPED)))) {
1694
1695 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1696 goto fail;
1697
1698 service_set_state(s, SERVICE_AUTO_RESTART);
1699 } else
1700 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
1701
1702 s->forbid_restart = false;
1703
1704 return;
1705
1706 fail:
1707 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1708 service_enter_dead(s, false, false);
1709 }
1710
1711 static void service_enter_signal(Service *s, ServiceState state, bool success);
1712
1713 static void service_enter_stop_post(Service *s, bool success) {
1714 int r;
1715 assert(s);
1716
1717 if (!success)
1718 s->failure = true;
1719
1720 service_unwatch_control_pid(s);
1721
1722 s->control_command_id = SERVICE_EXEC_STOP_POST;
1723 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1724 if ((r = service_spawn(s,
1725 s->control_command,
1726 true,
1727 false,
1728 !s->permissions_start_only,
1729 !s->root_directory_start_only,
1730 true,
1731 false,
1732 &s->control_pid)) < 0)
1733 goto fail;
1734
1735
1736 service_set_state(s, SERVICE_STOP_POST);
1737 } else
1738 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1739
1740 return;
1741
1742 fail:
1743 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1744 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1745 }
1746
1747 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1748 int r;
1749 Set *pid_set = NULL;
1750 bool wait_for_exit = false;
1751
1752 assert(s);
1753
1754 if (!success)
1755 s->failure = true;
1756
1757 if (s->exec_context.kill_mode != KILL_NONE) {
1758 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1759
1760 if (s->main_pid > 0) {
1761 if (kill(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
1762 -s->main_pid :
1763 s->main_pid, sig) < 0 && errno != ESRCH)
1764
1765 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1766 else
1767 wait_for_exit = true;
1768 }
1769
1770 if (s->control_pid > 0) {
1771 if (kill(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
1772 -s->control_pid :
1773 s->control_pid, sig) < 0 && errno != ESRCH)
1774
1775 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1776 else
1777 wait_for_exit = true;
1778 }
1779
1780 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1781
1782 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1783 r = -ENOMEM;
1784 goto fail;
1785 }
1786
1787 /* Exclude the main/control pids from being killed via the cgroup */
1788 if (s->main_pid > 0)
1789 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1790 goto fail;
1791
1792 if (s->control_pid > 0)
1793 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1794 goto fail;
1795
1796 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, pid_set)) < 0) {
1797 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1798 log_warning("Failed to kill control group: %s", strerror(-r));
1799 } else if (r > 0)
1800 wait_for_exit = true;
1801
1802 set_free(pid_set);
1803 }
1804 }
1805
1806 if (wait_for_exit) {
1807 if (s->timeout_usec > 0)
1808 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1809 goto fail;
1810
1811 service_set_state(s, state);
1812 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1813 service_enter_stop_post(s, true);
1814 else
1815 service_enter_dead(s, true, true);
1816
1817 return;
1818
1819 fail:
1820 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1821
1822 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1823 service_enter_stop_post(s, false);
1824 else
1825 service_enter_dead(s, false, true);
1826
1827 if (pid_set)
1828 set_free(pid_set);
1829 }
1830
1831 static void service_enter_stop(Service *s, bool success) {
1832 int r;
1833
1834 assert(s);
1835
1836 if (!success)
1837 s->failure = true;
1838
1839 service_unwatch_control_pid(s);
1840
1841 s->control_command_id = SERVICE_EXEC_STOP;
1842 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1843 if ((r = service_spawn(s,
1844 s->control_command,
1845 true,
1846 false,
1847 !s->permissions_start_only,
1848 !s->root_directory_start_only,
1849 false,
1850 false,
1851 &s->control_pid)) < 0)
1852 goto fail;
1853
1854 service_set_state(s, SERVICE_STOP);
1855 } else
1856 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1857
1858 return;
1859
1860 fail:
1861 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
1862 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1863 }
1864
1865 static void service_enter_running(Service *s, bool success) {
1866 int main_pid_ok, cgroup_ok;
1867 assert(s);
1868
1869 if (!success)
1870 s->failure = true;
1871
1872 main_pid_ok = main_pid_good(s);
1873 cgroup_ok = cgroup_good(s);
1874
1875 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
1876 (s->bus_name_good || s->type != SERVICE_DBUS))
1877 service_set_state(s, SERVICE_RUNNING);
1878 else if (s->remain_after_exit)
1879 service_set_state(s, SERVICE_EXITED);
1880 else
1881 service_enter_stop(s, true);
1882 }
1883
1884 static void service_enter_start_post(Service *s) {
1885 int r;
1886 assert(s);
1887
1888 service_unwatch_control_pid(s);
1889
1890 s->control_command_id = SERVICE_EXEC_START_POST;
1891 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1892 if ((r = service_spawn(s,
1893 s->control_command,
1894 true,
1895 false,
1896 !s->permissions_start_only,
1897 !s->root_directory_start_only,
1898 false,
1899 false,
1900 &s->control_pid)) < 0)
1901 goto fail;
1902
1903 service_set_state(s, SERVICE_START_POST);
1904 } else
1905 service_enter_running(s, true);
1906
1907 return;
1908
1909 fail:
1910 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
1911 service_enter_stop(s, false);
1912 }
1913
1914 static void service_enter_start(Service *s) {
1915 pid_t pid;
1916 int r;
1917
1918 assert(s);
1919
1920 assert(s->exec_command[SERVICE_EXEC_START]);
1921 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
1922
1923 if (s->type == SERVICE_FORKING)
1924 service_unwatch_control_pid(s);
1925 else
1926 service_unwatch_main_pid(s);
1927
1928 s->control_command_id = SERVICE_EXEC_START;
1929 s->control_command = s->exec_command[SERVICE_EXEC_START];
1930
1931 if ((r = service_spawn(s,
1932 s->control_command,
1933 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
1934 true,
1935 true,
1936 true,
1937 true,
1938 s->notify_access != NOTIFY_NONE,
1939 &pid)) < 0)
1940 goto fail;
1941
1942 if (s->type == SERVICE_SIMPLE) {
1943 /* For simple services we immediately start
1944 * the START_POST binaries. */
1945
1946 service_set_main_pid(s, pid);
1947 service_enter_start_post(s);
1948
1949 } else if (s->type == SERVICE_FORKING) {
1950
1951 /* For forking services we wait until the start
1952 * process exited. */
1953
1954 s->control_pid = pid;
1955 service_set_state(s, SERVICE_START);
1956
1957 } else if (s->type == SERVICE_ONESHOT ||
1958 s->type == SERVICE_DBUS ||
1959 s->type == SERVICE_NOTIFY) {
1960
1961 /* For oneshot services we wait until the start
1962 * process exited, too, but it is our main process. */
1963
1964 /* For D-Bus services we know the main pid right away,
1965 * but wait for the bus name to appear on the
1966 * bus. Notify services are similar. */
1967
1968 service_set_main_pid(s, pid);
1969 service_set_state(s, SERVICE_START);
1970 } else
1971 assert_not_reached("Unknown service type");
1972
1973 return;
1974
1975 fail:
1976 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
1977 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1978 }
1979
1980 static void service_enter_start_pre(Service *s) {
1981 int r;
1982
1983 assert(s);
1984
1985 service_unwatch_control_pid(s);
1986
1987 s->control_command_id = SERVICE_EXEC_START_PRE;
1988 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
1989 if ((r = service_spawn(s,
1990 s->control_command,
1991 true,
1992 false,
1993 !s->permissions_start_only,
1994 !s->root_directory_start_only,
1995 true,
1996 false,
1997 &s->control_pid)) < 0)
1998 goto fail;
1999
2000 service_set_state(s, SERVICE_START_PRE);
2001 } else
2002 service_enter_start(s);
2003
2004 return;
2005
2006 fail:
2007 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
2008 service_enter_dead(s, false, true);
2009 }
2010
2011 static void service_enter_restart(Service *s) {
2012 int r;
2013 DBusError error;
2014
2015 assert(s);
2016 dbus_error_init(&error);
2017
2018 service_enter_dead(s, true, false);
2019
2020 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
2021 goto fail;
2022
2023 log_debug("%s scheduled restart job.", s->meta.id);
2024 return;
2025
2026 fail:
2027 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
2028 service_enter_dead(s, false, false);
2029
2030 dbus_error_free(&error);
2031 }
2032
2033 static void service_enter_reload(Service *s) {
2034 int r;
2035
2036 assert(s);
2037
2038 service_unwatch_control_pid(s);
2039
2040 s->control_command_id = SERVICE_EXEC_RELOAD;
2041 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2042 if ((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 &s->control_pid)) < 0)
2051 goto fail;
2052
2053 service_set_state(s, SERVICE_RELOAD);
2054 } else
2055 service_enter_running(s, true);
2056
2057 return;
2058
2059 fail:
2060 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
2061 service_enter_stop(s, false);
2062 }
2063
2064 static void service_run_next_control(Service *s, bool success) {
2065 int r;
2066
2067 assert(s);
2068 assert(s->control_command);
2069 assert(s->control_command->command_next);
2070
2071 if (!success)
2072 s->failure = true;
2073
2074 assert(s->control_command_id != SERVICE_EXEC_START);
2075
2076 s->control_command = s->control_command->command_next;
2077 service_unwatch_control_pid(s);
2078
2079 if ((r = service_spawn(s,
2080 s->control_command,
2081 true,
2082 false,
2083 !s->permissions_start_only,
2084 !s->root_directory_start_only,
2085 s->control_command_id == SERVICE_EXEC_START_PRE ||
2086 s->control_command_id == SERVICE_EXEC_STOP_POST,
2087 false,
2088 &s->control_pid)) < 0)
2089 goto fail;
2090
2091 return;
2092
2093 fail:
2094 log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
2095
2096 if (s->state == SERVICE_START_PRE)
2097 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2098 else if (s->state == SERVICE_STOP)
2099 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2100 else if (s->state == SERVICE_STOP_POST)
2101 service_enter_dead(s, false, true);
2102 else
2103 service_enter_stop(s, false);
2104 }
2105
2106 static void service_run_next_main(Service *s, bool success) {
2107 pid_t pid;
2108 int r;
2109
2110 assert(s);
2111 assert(s->control_command);
2112 assert(s->control_command->command_next);
2113
2114 if (!success)
2115 s->failure = true;
2116
2117 assert(s->control_command_id == SERVICE_EXEC_START);
2118 assert(s->type == SERVICE_ONESHOT);
2119
2120 s->control_command = s->control_command->command_next;
2121 service_unwatch_main_pid(s);
2122
2123 if ((r = service_spawn(s,
2124 s->control_command,
2125 false,
2126 true,
2127 true,
2128 true,
2129 true,
2130 s->notify_access != NOTIFY_NONE,
2131 &pid)) < 0)
2132 goto fail;
2133
2134 service_set_main_pid(s, pid);
2135
2136 return;
2137
2138 fail:
2139 log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
2140 service_enter_stop(s, false);
2141 }
2142
2143 static int service_start(Unit *u) {
2144 Service *s = SERVICE(u);
2145
2146 assert(s);
2147
2148 /* We cannot fulfill this request right now, try again later
2149 * please! */
2150 if (s->state == SERVICE_STOP ||
2151 s->state == SERVICE_STOP_SIGTERM ||
2152 s->state == SERVICE_STOP_SIGKILL ||
2153 s->state == SERVICE_STOP_POST ||
2154 s->state == SERVICE_FINAL_SIGTERM ||
2155 s->state == SERVICE_FINAL_SIGKILL)
2156 return -EAGAIN;
2157
2158 /* Already on it! */
2159 if (s->state == SERVICE_START_PRE ||
2160 s->state == SERVICE_START ||
2161 s->state == SERVICE_START_POST)
2162 return 0;
2163
2164 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
2165
2166 /* Make sure we don't enter a busy loop of some kind. */
2167 if (!ratelimit_test(&s->ratelimit)) {
2168 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
2169 return -ECANCELED;
2170 }
2171
2172 s->failure = false;
2173 s->main_pid_known = false;
2174 s->forbid_restart = false;
2175
2176 service_enter_start_pre(s);
2177 return 0;
2178 }
2179
2180 static int service_stop(Unit *u) {
2181 Service *s = SERVICE(u);
2182
2183 assert(s);
2184
2185 /* This is a user request, so don't do restarts on this
2186 * shutdown. */
2187 s->forbid_restart = true;
2188
2189 /* Already on it */
2190 if (s->state == SERVICE_STOP ||
2191 s->state == SERVICE_STOP_SIGTERM ||
2192 s->state == SERVICE_STOP_SIGKILL ||
2193 s->state == SERVICE_STOP_POST ||
2194 s->state == SERVICE_FINAL_SIGTERM ||
2195 s->state == SERVICE_FINAL_SIGKILL)
2196 return 0;
2197
2198 /* Don't allow a restart */
2199 if (s->state == SERVICE_AUTO_RESTART) {
2200 service_set_state(s, SERVICE_DEAD);
2201 return 0;
2202 }
2203
2204 /* If there's already something running we go directly into
2205 * kill mode. */
2206 if (s->state == SERVICE_START_PRE ||
2207 s->state == SERVICE_START ||
2208 s->state == SERVICE_START_POST ||
2209 s->state == SERVICE_RELOAD) {
2210 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2211 return 0;
2212 }
2213
2214 assert(s->state == SERVICE_RUNNING ||
2215 s->state == SERVICE_EXITED);
2216
2217 service_enter_stop(s, true);
2218 return 0;
2219 }
2220
2221 static int service_reload(Unit *u) {
2222 Service *s = SERVICE(u);
2223
2224 assert(s);
2225
2226 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2227
2228 service_enter_reload(s);
2229 return 0;
2230 }
2231
2232 static bool service_can_reload(Unit *u) {
2233 Service *s = SERVICE(u);
2234
2235 assert(s);
2236
2237 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2238 }
2239
2240 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2241 Service *s = SERVICE(u);
2242
2243 assert(u);
2244 assert(f);
2245 assert(fds);
2246
2247 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2248 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2249
2250 if (s->control_pid > 0)
2251 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2252
2253 if (s->main_pid_known && s->main_pid > 0)
2254 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2255
2256 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2257
2258 if (s->status_text)
2259 unit_serialize_item(u, f, "status-text", s->status_text);
2260
2261 /* There's a minor uncleanliness here: if there are multiple
2262 * commands attached here, we will start from the first one
2263 * again */
2264 if (s->control_command_id >= 0)
2265 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2266
2267 if (s->socket_fd >= 0) {
2268 int copy;
2269
2270 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2271 return copy;
2272
2273 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2274 }
2275
2276 if (s->main_exec_status.pid > 0) {
2277 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2278
2279 if (s->main_exec_status.start_timestamp.realtime > 0) {
2280 unit_serialize_item_format(u, f, "main-exec-status-start-realtime",
2281 "%llu", (unsigned long long) s->main_exec_status.start_timestamp.realtime);
2282
2283 unit_serialize_item_format(u, f, "main-exec-status-start-monotonic",
2284 "%llu", (unsigned long long) s->main_exec_status.start_timestamp.monotonic);
2285 }
2286
2287 if (s->main_exec_status.exit_timestamp.realtime > 0) {
2288 unit_serialize_item_format(u, f, "main-exec-status-exit-realtime",
2289 "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.realtime);
2290 unit_serialize_item_format(u, f, "main-exec-status-exit-monotonic",
2291 "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.monotonic);
2292
2293 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2294 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2295 }
2296 }
2297
2298 return 0;
2299 }
2300
2301 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2302 Service *s = SERVICE(u);
2303
2304 assert(u);
2305 assert(key);
2306 assert(value);
2307 assert(fds);
2308
2309 if (streq(key, "state")) {
2310 ServiceState state;
2311
2312 if ((state = service_state_from_string(value)) < 0)
2313 log_debug("Failed to parse state value %s", value);
2314 else
2315 s->deserialized_state = state;
2316 } else if (streq(key, "failure")) {
2317 int b;
2318
2319 if ((b = parse_boolean(value)) < 0)
2320 log_debug("Failed to parse failure value %s", value);
2321 else
2322 s->failure = b || s->failure;
2323 } else if (streq(key, "control-pid")) {
2324 pid_t pid;
2325
2326 if (parse_pid(value, &pid) < 0)
2327 log_debug("Failed to parse control-pid value %s", value);
2328 else
2329 s->control_pid = pid;
2330 } else if (streq(key, "main-pid")) {
2331 pid_t pid;
2332
2333 if (parse_pid(value, &pid) < 0)
2334 log_debug("Failed to parse main-pid value %s", value);
2335 else
2336 service_set_main_pid(s, (pid_t) pid);
2337 } else if (streq(key, "main-pid-known")) {
2338 int b;
2339
2340 if ((b = parse_boolean(value)) < 0)
2341 log_debug("Failed to parse main-pid-known value %s", value);
2342 else
2343 s->main_pid_known = b;
2344 } else if (streq(key, "status-text")) {
2345 char *t;
2346
2347 if ((t = strdup(value))) {
2348 free(s->status_text);
2349 s->status_text = t;
2350 }
2351
2352 } else if (streq(key, "control-command")) {
2353 ServiceExecCommand id;
2354
2355 if ((id = service_exec_command_from_string(value)) < 0)
2356 log_debug("Failed to parse exec-command value %s", value);
2357 else {
2358 s->control_command_id = id;
2359 s->control_command = s->exec_command[id];
2360 }
2361 } else if (streq(key, "socket-fd")) {
2362 int fd;
2363
2364 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2365 log_debug("Failed to parse socket-fd value %s", value);
2366 else {
2367
2368 if (s->socket_fd >= 0)
2369 close_nointr_nofail(s->socket_fd);
2370 s->socket_fd = fdset_remove(fds, fd);
2371 }
2372 } else if (streq(key, "main-exec-status-pid")) {
2373 pid_t pid;
2374
2375 if (parse_pid(value, &pid) < 0)
2376 log_debug("Failed to parse main-exec-status-pid value %s", value);
2377 else
2378 s->main_exec_status.pid = pid;
2379 } else if (streq(key, "main-exec-status-code")) {
2380 int i;
2381
2382 if (safe_atoi(value, &i) < 0)
2383 log_debug("Failed to parse main-exec-status-code value %s", value);
2384 else
2385 s->main_exec_status.code = i;
2386 } else if (streq(key, "main-exec-status-status")) {
2387 int i;
2388
2389 if (safe_atoi(value, &i) < 0)
2390 log_debug("Failed to parse main-exec-status-status value %s", value);
2391 else
2392 s->main_exec_status.status = i;
2393 } else if (streq(key, "main-exec-status-start-realtime")) {
2394 uint64_t k;
2395
2396 if (safe_atou64(value, &k) < 0)
2397 log_debug("Failed to parse main-exec-status-start-realtime value %s", value);
2398 else
2399 s->main_exec_status.start_timestamp.realtime = (usec_t) k;
2400 } else if (streq(key, "main-exec-status-start-monotonic")) {
2401 uint64_t k;
2402
2403 if (safe_atou64(value, &k) < 0)
2404 log_debug("Failed to parse main-exec-status-start-monotonic value %s", value);
2405 else
2406 s->main_exec_status.start_timestamp.monotonic = (usec_t) k;
2407 } else if (streq(key, "main-exec-status-exit-realtime")) {
2408 uint64_t k;
2409
2410 if (safe_atou64(value, &k) < 0)
2411 log_debug("Failed to parse main-exec-status-exit-realtime value %s", value);
2412 else
2413 s->main_exec_status.exit_timestamp.realtime = (usec_t) k;
2414 } else if (streq(key, "main-exec-status-exit-monotonic")) {
2415 uint64_t k;
2416
2417 if (safe_atou64(value, &k) < 0)
2418 log_debug("Failed to parse main-exec-status-exit-monotonic value %s", value);
2419 else
2420 s->main_exec_status.exit_timestamp.monotonic = (usec_t) k;
2421 } else
2422 log_debug("Unknown serialization key '%s'", key);
2423
2424 return 0;
2425 }
2426
2427 static UnitActiveState service_active_state(Unit *u) {
2428 assert(u);
2429
2430 return state_translation_table[SERVICE(u)->state];
2431 }
2432
2433 static const char *service_sub_state_to_string(Unit *u) {
2434 assert(u);
2435
2436 return service_state_to_string(SERVICE(u)->state);
2437 }
2438
2439 #ifdef HAVE_SYSV_COMPAT
2440 static bool service_check_gc(Unit *u) {
2441 Service *s = SERVICE(u);
2442
2443 assert(s);
2444
2445 return !!s->sysv_path;
2446 }
2447 #endif
2448
2449 static bool service_check_snapshot(Unit *u) {
2450 Service *s = SERVICE(u);
2451
2452 assert(s);
2453
2454 return !s->got_socket_fd;
2455 }
2456
2457 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2458 Service *s = SERVICE(u);
2459 bool success;
2460
2461 assert(s);
2462 assert(pid >= 0);
2463
2464 if (!s->meta.fragment_path)
2465 success = is_clean_exit_lsb(code, status);
2466 else
2467 success = is_clean_exit(code, status);
2468
2469 if (s->main_pid == pid) {
2470
2471 s->main_pid = 0;
2472 exec_status_exit(&s->main_exec_status, pid, code, status, s->exec_context.utmp_id);
2473
2474 if (s->type != SERVICE_FORKING && s->control_command) {
2475 s->control_command->exec_status = s->main_exec_status;
2476
2477 if (s->control_command->ignore)
2478 success = true;
2479 }
2480
2481 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2482 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2483 s->failure = s->failure || !success;
2484
2485 if (s->control_command &&
2486 s->control_command->command_next &&
2487 success) {
2488
2489 /* There is another command to *
2490 * execute, so let's do that. */
2491
2492 log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2493 service_run_next_main(s, success);
2494
2495 } else {
2496
2497 /* The service exited, so the service is officially
2498 * gone. */
2499
2500 s->control_command = NULL;
2501 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2502
2503 switch (s->state) {
2504
2505 case SERVICE_START_POST:
2506 case SERVICE_RELOAD:
2507 case SERVICE_STOP:
2508 /* Need to wait until the operation is
2509 * done */
2510 break;
2511
2512 case SERVICE_START:
2513 if (s->type == SERVICE_ONESHOT) {
2514 /* This was our main goal, so let's go on */
2515 if (success)
2516 service_enter_start_post(s);
2517 else
2518 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2519 break;
2520 } else {
2521 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2522
2523 /* Fall through */
2524 }
2525
2526 case SERVICE_RUNNING:
2527 service_enter_running(s, success);
2528 break;
2529
2530 case SERVICE_STOP_SIGTERM:
2531 case SERVICE_STOP_SIGKILL:
2532
2533 if (!control_pid_good(s))
2534 service_enter_stop_post(s, success);
2535
2536 /* If there is still a control process, wait for that first */
2537 break;
2538
2539 default:
2540 assert_not_reached("Uh, main process died at wrong time.");
2541 }
2542 }
2543
2544 } else if (s->control_pid == pid) {
2545
2546 s->control_pid = 0;
2547
2548 if (s->control_command) {
2549 exec_status_exit(&s->control_command->exec_status, pid, code, status, s->exec_context.utmp_id);
2550
2551 if (s->control_command->ignore)
2552 success = true;
2553 }
2554
2555 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2556 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2557 s->failure = s->failure || !success;
2558
2559 if (s->control_command &&
2560 s->control_command->command_next &&
2561 success) {
2562
2563 /* There is another command to *
2564 * execute, so let's do that. */
2565
2566 log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2567 service_run_next_control(s, success);
2568
2569 } else {
2570 /* No further commands for this step, so let's
2571 * figure out what to do next */
2572
2573 s->control_command = NULL;
2574 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2575
2576 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2577
2578 switch (s->state) {
2579
2580 case SERVICE_START_PRE:
2581 if (success)
2582 service_enter_start(s);
2583 else
2584 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2585 break;
2586
2587 case SERVICE_START:
2588 assert(s->type == SERVICE_FORKING);
2589
2590 /* Let's try to load the pid
2591 * file here if we can. We
2592 * ignore the return value,
2593 * since the PID file might
2594 * actually be created by a
2595 * START_POST script */
2596
2597 if (success) {
2598 if (s->pid_file)
2599 service_load_pid_file(s);
2600
2601 service_enter_start_post(s);
2602 } else
2603 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2604
2605 break;
2606
2607 case SERVICE_START_POST:
2608 if (success && s->pid_file && !s->main_pid_known) {
2609 int r;
2610
2611 /* Hmm, let's see if we can
2612 * load the pid now after the
2613 * start-post scripts got
2614 * executed. */
2615
2616 if ((r = service_load_pid_file(s)) < 0)
2617 log_warning("%s: failed to load PID file %s: %s", s->meta.id, s->pid_file, strerror(-r));
2618 }
2619
2620 /* Fall through */
2621
2622 case SERVICE_RELOAD:
2623 if (success)
2624 service_enter_running(s, true);
2625 else
2626 service_enter_stop(s, false);
2627
2628 break;
2629
2630 case SERVICE_STOP:
2631 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2632 break;
2633
2634 case SERVICE_STOP_SIGTERM:
2635 case SERVICE_STOP_SIGKILL:
2636 if (main_pid_good(s) <= 0)
2637 service_enter_stop_post(s, success);
2638
2639 /* If there is still a service
2640 * process around, wait until
2641 * that one quit, too */
2642 break;
2643
2644 case SERVICE_STOP_POST:
2645 case SERVICE_FINAL_SIGTERM:
2646 case SERVICE_FINAL_SIGKILL:
2647 service_enter_dead(s, success, true);
2648 break;
2649
2650 default:
2651 assert_not_reached("Uh, control process died at wrong time.");
2652 }
2653 }
2654 }
2655
2656 /* Notify clients about changed exit status */
2657 unit_add_to_dbus_queue(u);
2658 }
2659
2660 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2661 Service *s = SERVICE(u);
2662
2663 assert(s);
2664 assert(elapsed == 1);
2665
2666 assert(w == &s->timer_watch);
2667
2668 switch (s->state) {
2669
2670 case SERVICE_START_PRE:
2671 case SERVICE_START:
2672 log_warning("%s operation timed out. Terminating.", u->meta.id);
2673 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2674 break;
2675
2676 case SERVICE_START_POST:
2677 case SERVICE_RELOAD:
2678 log_warning("%s operation timed out. Stopping.", u->meta.id);
2679 service_enter_stop(s, false);
2680 break;
2681
2682 case SERVICE_STOP:
2683 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2684 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2685 break;
2686
2687 case SERVICE_STOP_SIGTERM:
2688 log_warning("%s stopping timed out. Killing.", u->meta.id);
2689 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2690 break;
2691
2692 case SERVICE_STOP_SIGKILL:
2693 /* Uh, wie sent a SIGKILL and it is still not gone?
2694 * Must be something we cannot kill, so let's just be
2695 * weirded out and continue */
2696
2697 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2698 service_enter_stop_post(s, false);
2699 break;
2700
2701 case SERVICE_STOP_POST:
2702 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2703 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2704 break;
2705
2706 case SERVICE_FINAL_SIGTERM:
2707 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2708 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2709 break;
2710
2711 case SERVICE_FINAL_SIGKILL:
2712 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
2713 service_enter_dead(s, false, true);
2714 break;
2715
2716 case SERVICE_AUTO_RESTART:
2717 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2718 service_enter_restart(s);
2719 break;
2720
2721 default:
2722 assert_not_reached("Timeout at wrong time.");
2723 }
2724 }
2725
2726 static void service_cgroup_notify_event(Unit *u) {
2727 Service *s = SERVICE(u);
2728
2729 assert(u);
2730
2731 log_debug("%s: cgroup is empty", u->meta.id);
2732
2733 switch (s->state) {
2734
2735 /* Waiting for SIGCHLD is usually more interesting,
2736 * because it includes return codes/signals. Which is
2737 * why we ignore the cgroup events for most cases,
2738 * except when we don't know pid which to expect the
2739 * SIGCHLD for. */
2740
2741 case SERVICE_RUNNING:
2742 service_enter_running(s, true);
2743 break;
2744
2745 case SERVICE_STOP_SIGTERM:
2746 case SERVICE_STOP_SIGKILL:
2747 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2748 service_enter_stop_post(s, true);
2749
2750 break;
2751
2752 case SERVICE_FINAL_SIGTERM:
2753 case SERVICE_FINAL_SIGKILL:
2754 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2755 service_enter_dead(s, true, true);
2756
2757 break;
2758
2759 default:
2760 ;
2761 }
2762 }
2763
2764 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2765 Service *s = SERVICE(u);
2766 const char *e;
2767
2768 assert(u);
2769
2770 if (s->notify_access == NOTIFY_NONE) {
2771 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2772 u->meta.id, (unsigned long) pid);
2773 return;
2774 }
2775
2776 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2777 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2778 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2779 return;
2780 }
2781
2782 log_debug("%s: Got message", u->meta.id);
2783
2784 /* Interpret MAINPID= */
2785 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2786 (s->state == SERVICE_START ||
2787 s->state == SERVICE_START_POST ||
2788 s->state == SERVICE_RUNNING ||
2789 s->state == SERVICE_RELOAD)) {
2790
2791 if (parse_pid(e + 8, &pid) < 0)
2792 log_warning("Failed to parse notification message %s", e);
2793 else {
2794 log_debug("%s: got %s", u->meta.id, e);
2795 service_set_main_pid(s, pid);
2796 }
2797 }
2798
2799 /* Interpret READY= */
2800 if (s->type == SERVICE_NOTIFY &&
2801 s->state == SERVICE_START &&
2802 strv_find(tags, "READY=1")) {
2803 log_debug("%s: got READY=1", u->meta.id);
2804
2805 service_enter_start_post(s);
2806 }
2807
2808 /* Interpret STATUS= */
2809 if ((e = strv_find_prefix(tags, "STATUS="))) {
2810 char *t;
2811
2812 if (e[7]) {
2813 if (!(t = strdup(e+7))) {
2814 log_error("Failed to allocate string.");
2815 return;
2816 }
2817
2818 log_debug("%s: got %s", u->meta.id, e);
2819
2820 free(s->status_text);
2821 s->status_text = t;
2822 } else {
2823 free(s->status_text);
2824 s->status_text = NULL;
2825 }
2826
2827 }
2828
2829 /* Notify clients about changed status or main pid */
2830 unit_add_to_dbus_queue(u);
2831 }
2832
2833 #ifdef HAVE_SYSV_COMPAT
2834 static int service_enumerate(Manager *m) {
2835 char **p;
2836 unsigned i;
2837 DIR *d = NULL;
2838 char *path = NULL, *fpath = NULL, *name = NULL;
2839 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
2840 Unit *service;
2841 Iterator j;
2842 int r;
2843 #ifdef TARGET_ARCH
2844 Unit *previous = NULL;
2845 char *arch_daemons = NULL;
2846 char *arch_daemons_stripped = NULL;
2847 char **arch_daemons_split = NULL;
2848 #endif
2849
2850 assert(m);
2851
2852 #ifdef TARGET_ARCH
2853 if ((r = parse_env_file("/etc/rc.conf", NEWLINE,
2854 "DAEMONS", &arch_daemons,
2855 NULL)) < 0) {
2856
2857 if (r != -ENOENT)
2858 log_warning("Failed to read /etc/rc.conf: %s", strerror(-r));
2859
2860 } else if (arch_daemons) {
2861 if (!(arch_daemons_stripped = strchr(arch_daemons, '(')))
2862 arch_daemons_stripped = arch_daemons;
2863 else
2864 arch_daemons_stripped++; /* strip start paren */
2865
2866 arch_daemons_stripped[strcspn(arch_daemons_stripped, ")")] = 0; /* strip end paren */
2867
2868 if (!(arch_daemons_split = strv_split_quoted(arch_daemons_stripped))) {
2869 r = -ENOMEM;
2870 goto finish;
2871 }
2872
2873 STRV_FOREACH(p, arch_daemons_split) {
2874
2875 free(name);
2876 name = NULL;
2877
2878 if (**p == '!') /* daemons prefixed with ! are disabled, so ignore them */
2879 continue;
2880
2881 if (!(name = sysv_translate_name(*p))) {
2882 r = -ENOMEM;
2883 goto finish;
2884 }
2885
2886 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
2887 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2888 continue;
2889 }
2890
2891 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, "multi-user.target", NULL, true)) < 0)
2892 goto finish;
2893
2894 if (previous)
2895 if ((r = unit_add_dependency(service, UNIT_AFTER, previous, true)) < 0)
2896 goto finish;
2897
2898 if (**p != '@') /* daemons prefixed with @ can be started in the background */
2899 previous = service;
2900 }
2901 }
2902 #endif
2903
2904 zero(runlevel_services);
2905
2906 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
2907 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2908 struct dirent *de;
2909
2910 free(path);
2911 path = NULL;
2912 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2913 r = -ENOMEM;
2914 goto finish;
2915 }
2916
2917 if (d)
2918 closedir(d);
2919
2920 if (!(d = opendir(path))) {
2921 if (errno != ENOENT)
2922 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2923
2924 continue;
2925 }
2926
2927 while ((de = readdir(d))) {
2928 int a, b;
2929
2930 if (ignore_file(de->d_name))
2931 continue;
2932
2933 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2934 continue;
2935
2936 if (strlen(de->d_name) < 4)
2937 continue;
2938
2939 a = undecchar(de->d_name[1]);
2940 b = undecchar(de->d_name[2]);
2941
2942 if (a < 0 || b < 0)
2943 continue;
2944
2945 free(fpath);
2946 fpath = NULL;
2947 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2948 r = -ENOMEM;
2949 goto finish;
2950 }
2951
2952 if (access(fpath, X_OK) < 0) {
2953
2954 if (errno != ENOENT)
2955 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2956
2957 continue;
2958 }
2959
2960 free(name);
2961 if (!(name = sysv_translate_name(de->d_name + 3))) {
2962 r = -ENOMEM;
2963 goto finish;
2964 }
2965
2966 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
2967 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2968 continue;
2969 }
2970
2971 if (de->d_name[0] == 'S') {
2972
2973 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
2974 SERVICE(service)->sysv_start_priority =
2975 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
2976
2977 SERVICE(service)->sysv_enabled = true;
2978 }
2979
2980 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
2981 goto finish;
2982
2983 if ((r = set_put(runlevel_services[i], service)) < 0)
2984 goto finish;
2985
2986 } else if (de->d_name[0] == 'K' &&
2987 (rcnd_table[i].type == RUNLEVEL_DOWN ||
2988 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
2989
2990 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
2991 goto finish;
2992
2993 if ((r = set_put(shutdown_services, service)) < 0)
2994 goto finish;
2995 }
2996 }
2997 }
2998
2999 /* Now we loaded all stubs and are aware of the lowest
3000 start-up priority for all services, not let's actually load
3001 the services, this will also tell us which services are
3002 actually native now */
3003 manager_dispatch_load_queue(m);
3004
3005 /* If this is a native service, rely on native ways to pull in
3006 * a service, don't pull it in via sysv rcN.d links. */
3007 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3008 SET_FOREACH(service, runlevel_services[i], j) {
3009 service = unit_follow_merge(service);
3010
3011 if (service->meta.fragment_path)
3012 continue;
3013
3014 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3015 goto finish;
3016 }
3017
3018 /* We honour K links only for halt/reboot. For the normal
3019 * runlevels we assume the stop jobs will be implicitly added
3020 * by the core logic. Also, we don't really distuingish here
3021 * between the runlevels 0 and 6 and just add them to the
3022 * special shutdown target. On SUSE the boot.d/ runlevel is
3023 * also used for shutdown, so we add links for that too to the
3024 * shutdown target.*/
3025 SET_FOREACH(service, shutdown_services, j) {
3026 service = unit_follow_merge(service);
3027
3028 if (service->meta.fragment_path)
3029 continue;
3030
3031 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3032 goto finish;
3033 }
3034
3035 r = 0;
3036
3037 finish:
3038 free(path);
3039 free(fpath);
3040 free(name);
3041 #ifdef TARGET_ARCH
3042 free(arch_daemons);
3043 free(arch_daemons_split);
3044 #endif
3045
3046 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3047 set_free(runlevel_services[i]);
3048 set_free(shutdown_services);
3049
3050 if (d)
3051 closedir(d);
3052
3053 return r;
3054 }
3055 #endif
3056
3057 static void service_bus_name_owner_change(
3058 Unit *u,
3059 const char *name,
3060 const char *old_owner,
3061 const char *new_owner) {
3062
3063 Service *s = SERVICE(u);
3064
3065 assert(s);
3066 assert(name);
3067
3068 assert(streq(s->bus_name, name));
3069 assert(old_owner || new_owner);
3070
3071 if (old_owner && new_owner)
3072 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
3073 else if (old_owner)
3074 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
3075 else
3076 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
3077
3078 s->bus_name_good = !!new_owner;
3079
3080 if (s->type == SERVICE_DBUS) {
3081
3082 /* service_enter_running() will figure out what to
3083 * do */
3084 if (s->state == SERVICE_RUNNING)
3085 service_enter_running(s, true);
3086 else if (s->state == SERVICE_START && new_owner)
3087 service_enter_start_post(s);
3088
3089 } else if (new_owner &&
3090 s->main_pid <= 0 &&
3091 (s->state == SERVICE_START ||
3092 s->state == SERVICE_START_POST ||
3093 s->state == SERVICE_RUNNING ||
3094 s->state == SERVICE_RELOAD)) {
3095
3096 /* Try to acquire PID from bus service */
3097 log_debug("Trying to acquire PID from D-Bus name...");
3098
3099 bus_query_pid(u->meta.manager, name);
3100 }
3101 }
3102
3103 static void service_bus_query_pid_done(
3104 Unit *u,
3105 const char *name,
3106 pid_t pid) {
3107
3108 Service *s = SERVICE(u);
3109
3110 assert(s);
3111 assert(name);
3112
3113 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
3114
3115 if (s->main_pid <= 0 &&
3116 (s->state == SERVICE_START ||
3117 s->state == SERVICE_START_POST ||
3118 s->state == SERVICE_RUNNING ||
3119 s->state == SERVICE_RELOAD))
3120 service_set_main_pid(s, pid);
3121 }
3122
3123 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3124 assert(s);
3125 assert(fd >= 0);
3126
3127 /* This is called by the socket code when instantiating a new
3128 * service for a stream socket and the socket needs to be
3129 * configured. */
3130
3131 if (s->meta.load_state != UNIT_LOADED)
3132 return -EINVAL;
3133
3134 if (s->socket_fd >= 0)
3135 return -EBUSY;
3136
3137 if (s->state != SERVICE_DEAD)
3138 return -EAGAIN;
3139
3140 s->socket_fd = fd;
3141 s->got_socket_fd = true;
3142 s->accept_socket = sock;
3143
3144 return 0;
3145 }
3146
3147 static void service_reset_failed(Unit *u) {
3148 Service *s = SERVICE(u);
3149
3150 assert(s);
3151
3152 if (s->state == SERVICE_FAILED)
3153 service_set_state(s, SERVICE_DEAD);
3154
3155 s->failure = false;
3156 }
3157
3158 static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3159 Service *s = SERVICE(u);
3160 int r = 0;
3161 Set *pid_set = NULL;
3162
3163 assert(s);
3164
3165 if (s->main_pid <= 0 && who == KILL_MAIN) {
3166 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3167 return -EINVAL;
3168 }
3169
3170 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3171 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3172 return -ENOENT;
3173 }
3174
3175 if (s->control_pid > 0)
3176 if (kill(mode == KILL_PROCESS_GROUP ? -s->control_pid : s->control_pid, signo) < 0)
3177 r = -errno;
3178
3179 if (s->main_pid > 0)
3180 if (kill(mode == KILL_PROCESS_GROUP ? -s->main_pid : s->main_pid, signo) < 0)
3181 r = -errno;
3182
3183 if (mode == KILL_CONTROL_GROUP) {
3184 int q;
3185
3186 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3187 return -ENOMEM;
3188
3189 /* Exclude the control/main pid from being killed via the cgroup */
3190 if (s->control_pid > 0)
3191 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3192 r = q;
3193 goto finish;
3194 }
3195
3196 if (s->main_pid > 0)
3197 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3198 r = q;
3199 goto finish;
3200 }
3201
3202 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, pid_set)) < 0)
3203 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
3204 r = q;
3205 }
3206
3207 finish:
3208 if (pid_set)
3209 set_free(pid_set);
3210
3211 return r;
3212 }
3213
3214 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3215 [SERVICE_DEAD] = "dead",
3216 [SERVICE_START_PRE] = "start-pre",
3217 [SERVICE_START] = "start",
3218 [SERVICE_START_POST] = "start-post",
3219 [SERVICE_RUNNING] = "running",
3220 [SERVICE_EXITED] = "exited",
3221 [SERVICE_RELOAD] = "reload",
3222 [SERVICE_STOP] = "stop",
3223 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3224 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3225 [SERVICE_STOP_POST] = "stop-post",
3226 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3227 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3228 [SERVICE_FAILED] = "failed",
3229 [SERVICE_AUTO_RESTART] = "auto-restart",
3230 };
3231
3232 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3233
3234 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3235 [SERVICE_RESTART_NO] = "no",
3236 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3237 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3238 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3239 [SERVICE_RESTART_ALWAYS] = "always"
3240 };
3241
3242 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3243
3244 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3245 [SERVICE_SIMPLE] = "simple",
3246 [SERVICE_FORKING] = "forking",
3247 [SERVICE_ONESHOT] = "oneshot",
3248 [SERVICE_DBUS] = "dbus",
3249 [SERVICE_NOTIFY] = "notify"
3250 };
3251
3252 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3253
3254 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3255 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3256 [SERVICE_EXEC_START] = "ExecStart",
3257 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3258 [SERVICE_EXEC_RELOAD] = "ExecReload",
3259 [SERVICE_EXEC_STOP] = "ExecStop",
3260 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3261 };
3262
3263 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3264
3265 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3266 [NOTIFY_NONE] = "none",
3267 [NOTIFY_MAIN] = "main",
3268 [NOTIFY_ALL] = "all"
3269 };
3270
3271 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3272
3273 const UnitVTable service_vtable = {
3274 .suffix = ".service",
3275 .show_status = true,
3276
3277 .init = service_init,
3278 .done = service_done,
3279 .load = service_load,
3280
3281 .coldplug = service_coldplug,
3282
3283 .dump = service_dump,
3284
3285 .start = service_start,
3286 .stop = service_stop,
3287 .reload = service_reload,
3288
3289 .can_reload = service_can_reload,
3290
3291 .kill = service_kill,
3292
3293 .serialize = service_serialize,
3294 .deserialize_item = service_deserialize_item,
3295
3296 .active_state = service_active_state,
3297 .sub_state_to_string = service_sub_state_to_string,
3298
3299 #ifdef HAVE_SYSV_COMPAT
3300 .check_gc = service_check_gc,
3301 #endif
3302 .check_snapshot = service_check_snapshot,
3303
3304 .sigchld_event = service_sigchld_event,
3305 .timer_event = service_timer_event,
3306
3307 .reset_failed = service_reset_failed,
3308
3309 .cgroup_notify_empty = service_cgroup_notify_event,
3310 .notify_message = service_notify_message,
3311
3312 .bus_name_owner_change = service_bus_name_owner_change,
3313 .bus_query_pid_done = service_bus_query_pid_done,
3314
3315 .bus_interface = "org.freedesktop.systemd1.Service",
3316 .bus_message_handler = bus_service_message_handler,
3317 .bus_invalidating_properties = bus_service_invalidating_properties,
3318
3319 #ifdef HAVE_SYSV_COMPAT
3320 .enumerate = service_enumerate
3321 #endif
3322 };
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