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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 Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
22 #include <errno.h>
23 #include <signal.h>
24 #include <dirent.h>
25 #include <unistd.h>
26 #include <sys/reboot.h>
27
28 #include "manager.h"
29 #include "unit.h"
30 #include "service.h"
31 #include "load-fragment.h"
32 #include "load-dropin.h"
33 #include "log.h"
34 #include "strv.h"
35 #include "unit-name.h"
36 #include "unit-printf.h"
37 #include "dbus-service.h"
38 #include "special.h"
39 #include "bus-errors.h"
40 #include "exit-status.h"
41 #include "def.h"
42 #include "path-util.h"
43 #include "util.h"
44 #include "utf8.h"
45
46 #ifdef HAVE_SYSV_COMPAT
47
48 #define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE)
49
50 typedef enum RunlevelType {
51 RUNLEVEL_UP,
52 RUNLEVEL_DOWN,
53 RUNLEVEL_SYSINIT
54 } RunlevelType;
55
56 static const struct {
57 const char *path;
58 const char *target;
59 const RunlevelType type;
60 } rcnd_table[] = {
61 /* Standard SysV runlevels for start-up */
62 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
63 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
64 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
65 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
66 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
67
68 #ifdef TARGET_SUSE
69 /* SUSE style boot.d */
70 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
71 #endif
72
73 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
74 /* Debian style rcS.d */
75 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
76 #endif
77
78 /* Standard SysV runlevels for shutdown */
79 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
80 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
81
82 /* Note that the order here matters, as we read the
83 directories in this order, and we want to make sure that
84 sysv_start_priority is known when we first load the
85 unit. And that value we only know from S links. Hence
86 UP/SYSINIT must be read before DOWN */
87 };
88
89 #define RUNLEVELS_UP "12345"
90 /* #define RUNLEVELS_DOWN "06" */
91 #define RUNLEVELS_BOOT "bBsS"
92 #endif
93
94 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
95 [SERVICE_DEAD] = UNIT_INACTIVE,
96 [SERVICE_START_PRE] = UNIT_ACTIVATING,
97 [SERVICE_START] = UNIT_ACTIVATING,
98 [SERVICE_START_POST] = UNIT_ACTIVATING,
99 [SERVICE_RUNNING] = UNIT_ACTIVE,
100 [SERVICE_EXITED] = UNIT_ACTIVE,
101 [SERVICE_RELOAD] = UNIT_RELOADING,
102 [SERVICE_STOP] = UNIT_DEACTIVATING,
103 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
104 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
105 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
106 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
107 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
108 [SERVICE_FAILED] = UNIT_FAILED,
109 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
110 };
111
112 /* For Type=idle we never want to delay any other jobs, hence we
113 * consider idle jobs active as soon as we start working on them */
114 static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = {
115 [SERVICE_DEAD] = UNIT_INACTIVE,
116 [SERVICE_START_PRE] = UNIT_ACTIVE,
117 [SERVICE_START] = UNIT_ACTIVE,
118 [SERVICE_START_POST] = UNIT_ACTIVE,
119 [SERVICE_RUNNING] = UNIT_ACTIVE,
120 [SERVICE_EXITED] = UNIT_ACTIVE,
121 [SERVICE_RELOAD] = UNIT_RELOADING,
122 [SERVICE_STOP] = UNIT_DEACTIVATING,
123 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
124 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
125 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
126 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
127 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
128 [SERVICE_FAILED] = UNIT_FAILED,
129 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
130 };
131
132 static void service_init(Unit *u) {
133 Service *s = SERVICE(u);
134
135 assert(u);
136 assert(u->load_state == UNIT_STUB);
137
138 s->timeout_start_usec = DEFAULT_TIMEOUT_USEC;
139 s->timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
140 s->restart_usec = DEFAULT_RESTART_USEC;
141 s->type = _SERVICE_TYPE_INVALID;
142
143 s->watchdog_watch.type = WATCH_INVALID;
144
145 s->timer_watch.type = WATCH_INVALID;
146 #ifdef HAVE_SYSV_COMPAT
147 s->sysv_start_priority = -1;
148 s->sysv_start_priority_from_rcnd = -1;
149 #endif
150 s->socket_fd = -1;
151 s->guess_main_pid = true;
152
153 exec_context_init(&s->exec_context);
154 kill_context_init(&s->kill_context);
155
156 RATELIMIT_INIT(s->start_limit, 10*USEC_PER_SEC, 5);
157
158 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
159 }
160
161 static void service_unwatch_control_pid(Service *s) {
162 assert(s);
163
164 if (s->control_pid <= 0)
165 return;
166
167 unit_unwatch_pid(UNIT(s), s->control_pid);
168 s->control_pid = 0;
169 }
170
171 static void service_unwatch_main_pid(Service *s) {
172 assert(s);
173
174 if (s->main_pid <= 0)
175 return;
176
177 unit_unwatch_pid(UNIT(s), s->main_pid);
178 s->main_pid = 0;
179 }
180
181 static void service_unwatch_pid_file(Service *s) {
182 if (!s->pid_file_pathspec)
183 return;
184
185 log_debug("Stopping watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
186 path_spec_unwatch(s->pid_file_pathspec, UNIT(s));
187 path_spec_done(s->pid_file_pathspec);
188 free(s->pid_file_pathspec);
189 s->pid_file_pathspec = NULL;
190 }
191
192 static int service_set_main_pid(Service *s, pid_t pid) {
193 pid_t ppid;
194
195 assert(s);
196
197 if (pid <= 1)
198 return -EINVAL;
199
200 if (pid == getpid())
201 return -EINVAL;
202
203 s->main_pid = pid;
204 s->main_pid_known = true;
205
206 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
207 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
208 UNIT(s)->id, (unsigned long) pid);
209
210 s->main_pid_alien = true;
211 } else
212 s->main_pid_alien = false;
213
214 exec_status_start(&s->main_exec_status, pid);
215
216 return 0;
217 }
218
219 static void service_close_socket_fd(Service *s) {
220 assert(s);
221
222 if (s->socket_fd < 0)
223 return;
224
225 close_nointr_nofail(s->socket_fd);
226 s->socket_fd = -1;
227 }
228
229 static void service_connection_unref(Service *s) {
230 assert(s);
231
232 if (!UNIT_DEREF(s->accept_socket))
233 return;
234
235 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
236 unit_ref_unset(&s->accept_socket);
237 }
238
239 static void service_stop_watchdog(Service *s) {
240 assert(s);
241
242 unit_unwatch_timer(UNIT(s), &s->watchdog_watch);
243 s->watchdog_timestamp.realtime = 0;
244 s->watchdog_timestamp.monotonic = 0;
245 }
246
247 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart);
248
249 static void service_handle_watchdog(Service *s) {
250 usec_t offset;
251 int r;
252
253 assert(s);
254
255 if (s->watchdog_usec == 0)
256 return;
257
258 offset = now(CLOCK_MONOTONIC) - s->watchdog_timestamp.monotonic;
259 if (offset >= s->watchdog_usec) {
260 log_error("%s watchdog timeout!", UNIT(s)->id);
261 service_enter_dead(s, SERVICE_FAILURE_WATCHDOG, true);
262 return;
263 }
264
265 r = unit_watch_timer(UNIT(s), s->watchdog_usec - offset, &s->watchdog_watch);
266 if (r < 0)
267 log_warning("%s failed to install watchdog timer: %s", UNIT(s)->id, strerror(-r));
268 }
269
270 static void service_reset_watchdog(Service *s) {
271 assert(s);
272
273 dual_timestamp_get(&s->watchdog_timestamp);
274 service_handle_watchdog(s);
275 }
276
277 static void service_done(Unit *u) {
278 Service *s = SERVICE(u);
279
280 assert(s);
281
282 free(s->pid_file);
283 s->pid_file = NULL;
284
285 #ifdef HAVE_SYSV_COMPAT
286 free(s->sysv_runlevels);
287 s->sysv_runlevels = NULL;
288 #endif
289
290 free(s->status_text);
291 s->status_text = NULL;
292
293 exec_context_done(&s->exec_context);
294 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
295 s->control_command = NULL;
296 s->main_command = NULL;
297
298 set_free(s->restart_ignore_status.code);
299 s->restart_ignore_status.code = NULL;
300 set_free(s->restart_ignore_status.signal);
301 s->restart_ignore_status.signal = NULL;
302
303 set_free(s->success_status.code);
304 s->success_status.code = NULL;
305 set_free(s->success_status.signal);
306 s->success_status.signal = NULL;
307
308 /* This will leak a process, but at least no memory or any of
309 * our resources */
310 service_unwatch_main_pid(s);
311 service_unwatch_control_pid(s);
312 service_unwatch_pid_file(s);
313
314 if (s->bus_name) {
315 unit_unwatch_bus_name(u, s->bus_name);
316 free(s->bus_name);
317 s->bus_name = NULL;
318 }
319
320 service_close_socket_fd(s);
321 service_connection_unref(s);
322
323 unit_ref_unset(&s->accept_socket);
324
325 service_stop_watchdog(s);
326
327 unit_unwatch_timer(u, &s->timer_watch);
328 }
329
330 #ifdef HAVE_SYSV_COMPAT
331 static char *sysv_translate_name(const char *name) {
332 char *r;
333
334 if (!(r = new(char, strlen(name) + sizeof(".service"))))
335 return NULL;
336
337 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
338 if (endswith(name, ".sh"))
339 /* Drop Debian-style .sh suffix */
340 strcpy(stpcpy(r, name) - 3, ".service");
341 #endif
342 #ifdef TARGET_SUSE
343 if (startswith(name, "boot."))
344 /* Drop SuSE-style boot. prefix */
345 strcpy(stpcpy(r, name + 5), ".service");
346 #endif
347 #ifdef TARGET_FRUGALWARE
348 if (startswith(name, "rc."))
349 /* Drop Frugalware-style rc. prefix */
350 strcpy(stpcpy(r, name + 3), ".service");
351 #endif
352 else
353 /* Normal init scripts */
354 strcpy(stpcpy(r, name), ".service");
355
356 return r;
357 }
358
359 static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
360
361 /* We silently ignore the $ prefix here. According to the LSB
362 * spec it simply indicates whether something is a
363 * standardized name or a distribution-specific one. Since we
364 * just follow what already exists and do not introduce new
365 * uses or names we don't care who introduced a new name. */
366
367 static const char * const table[] = {
368 /* LSB defined facilities */
369 "local_fs", SPECIAL_LOCAL_FS_TARGET,
370 #if defined(TARGET_MANDRIVA) || defined(TARGET_MAGEIA)
371 #else
372 /* Due to unfortunate name selection in Mandriva,
373 * $network is provided by network-up which is ordered
374 * after network which actually starts interfaces.
375 * To break the loop, just ignore it */
376 "network", SPECIAL_NETWORK_TARGET,
377 #endif
378 "named", SPECIAL_NSS_LOOKUP_TARGET,
379 "portmap", SPECIAL_RPCBIND_TARGET,
380 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
381 "syslog", SPECIAL_SYSLOG_TARGET,
382 "time", SPECIAL_TIME_SYNC_TARGET,
383
384 /* common extensions */
385 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
386 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
387 "null", NULL,
388
389 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
390 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
391 #endif
392
393 #ifdef TARGET_SUSE
394 "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
395 #endif
396 };
397
398 unsigned i;
399 char *r;
400 const char *n;
401
402 assert(name);
403 assert(_r);
404
405 n = *name == '$' ? name + 1 : name;
406
407 for (i = 0; i < ELEMENTSOF(table); i += 2) {
408
409 if (!streq(table[i], n))
410 continue;
411
412 if (!table[i+1])
413 return 0;
414
415 if (!(r = strdup(table[i+1])))
416 return -ENOMEM;
417
418 goto finish;
419 }
420
421 /* If we don't know this name, fallback heuristics to figure
422 * out whether something is a target or a service alias. */
423
424 if (*name == '$') {
425 if (!unit_prefix_is_valid(n))
426 return -EINVAL;
427
428 /* Facilities starting with $ are most likely targets */
429 r = unit_name_build(n, NULL, ".target");
430 } else if (filename && streq(name, filename))
431 /* Names equaling the file name of the services are redundant */
432 return 0;
433 else
434 /* Everything else we assume to be normal service names */
435 r = sysv_translate_name(n);
436
437 if (!r)
438 return -ENOMEM;
439
440 finish:
441 *_r = r;
442
443 return 1;
444 }
445
446 static int sysv_fix_order(Service *s) {
447 Unit *other;
448 int r;
449
450 assert(s);
451
452 if (s->sysv_start_priority < 0)
453 return 0;
454
455 /* For each pair of services where at least one lacks a LSB
456 * header, we use the start priority value to order things. */
457
458 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
459 Service *t;
460 UnitDependency d;
461 bool special_s, special_t;
462
463 t = SERVICE(other);
464
465 if (s == t)
466 continue;
467
468 if (UNIT(t)->load_state != UNIT_LOADED)
469 continue;
470
471 if (t->sysv_start_priority < 0)
472 continue;
473
474 /* If both units have modern headers we don't care
475 * about the priorities */
476 if ((UNIT(s)->fragment_path || s->sysv_has_lsb) &&
477 (UNIT(t)->fragment_path || t->sysv_has_lsb))
478 continue;
479
480 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
481 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
482
483 if (special_t && !special_s)
484 d = UNIT_AFTER;
485 else if (special_s && !special_t)
486 d = UNIT_BEFORE;
487 else if (t->sysv_start_priority < s->sysv_start_priority)
488 d = UNIT_AFTER;
489 else if (t->sysv_start_priority > s->sysv_start_priority)
490 d = UNIT_BEFORE;
491 else
492 continue;
493
494 /* FIXME: Maybe we should compare the name here lexicographically? */
495
496 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
497 return r;
498 }
499
500 return 0;
501 }
502
503 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
504 ExecCommand *c;
505
506 if (!(c = new0(ExecCommand, 1)))
507 return NULL;
508
509 if (!(c->path = strdup(path))) {
510 free(c);
511 return NULL;
512 }
513
514 if (!(c->argv = strv_new(path, arg1, NULL))) {
515 free(c->path);
516 free(c);
517 return NULL;
518 }
519
520 return c;
521 }
522
523 static int sysv_exec_commands(Service *s, const bool supports_reload) {
524 ExecCommand *c;
525
526 assert(s);
527 assert(s->is_sysv);
528 assert(UNIT(s)->source_path);
529
530 c = exec_command_new(UNIT(s)->source_path, "start");
531 if (!c)
532 return -ENOMEM;
533 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
534
535 c = exec_command_new(UNIT(s)->source_path, "stop");
536 if (!c)
537 return -ENOMEM;
538 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
539
540 if (supports_reload) {
541 c = exec_command_new(UNIT(s)->source_path, "reload");
542 if (!c)
543 return -ENOMEM;
544 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
545 }
546
547 return 0;
548 }
549
550 static bool usage_contains_reload(const char *line) {
551 return (strcasestr(line, "{reload|") ||
552 strcasestr(line, "{reload}") ||
553 strcasestr(line, "{reload\"") ||
554 strcasestr(line, "|reload|") ||
555 strcasestr(line, "|reload}") ||
556 strcasestr(line, "|reload\""));
557 }
558
559 static int service_load_sysv_path(Service *s, const char *path) {
560 FILE *f;
561 Unit *u;
562 unsigned line = 0;
563 int r;
564 enum {
565 NORMAL,
566 DESCRIPTION,
567 LSB,
568 LSB_DESCRIPTION,
569 USAGE_CONTINUATION
570 } state = NORMAL;
571 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
572 struct stat st;
573 bool supports_reload = false;
574
575 assert(s);
576 assert(path);
577
578 u = UNIT(s);
579
580 f = fopen(path, "re");
581 if (!f) {
582 r = errno == ENOENT ? 0 : -errno;
583 goto finish;
584 }
585
586 if (fstat(fileno(f), &st) < 0) {
587 r = -errno;
588 goto finish;
589 }
590
591 free(u->source_path);
592 u->source_path = strdup(path);
593 if (!u->source_path) {
594 r = -ENOMEM;
595 goto finish;
596 }
597 u->source_mtime = timespec_load(&st.st_mtim);
598
599 if (null_or_empty(&st)) {
600 u->load_state = UNIT_MASKED;
601 r = 0;
602 goto finish;
603 }
604
605 s->is_sysv = true;
606
607 while (!feof(f)) {
608 char l[LINE_MAX], *t;
609
610 if (!fgets(l, sizeof(l), f)) {
611 if (feof(f))
612 break;
613
614 r = -errno;
615 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
616 goto finish;
617 }
618
619 line++;
620
621 t = strstrip(l);
622 if (*t != '#') {
623 /* Try to figure out whether this init script supports
624 * the reload operation. This heuristic looks for
625 * "Usage" lines which include the reload option. */
626 if ( state == USAGE_CONTINUATION ||
627 (state == NORMAL && strcasestr(t, "usage"))) {
628 if (usage_contains_reload(t)) {
629 supports_reload = true;
630 state = NORMAL;
631 } else if (t[strlen(t)-1] == '\\')
632 state = USAGE_CONTINUATION;
633 else
634 state = NORMAL;
635 }
636
637 continue;
638 }
639
640 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
641 state = LSB;
642 s->sysv_has_lsb = true;
643 continue;
644 }
645
646 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
647 state = NORMAL;
648 continue;
649 }
650
651 t++;
652 t += strspn(t, WHITESPACE);
653
654 if (state == NORMAL) {
655
656 /* Try to parse Red Hat style chkconfig headers */
657
658 if (startswith_no_case(t, "chkconfig:")) {
659 int start_priority;
660 char runlevels[16], *k;
661
662 state = NORMAL;
663
664 if (sscanf(t+10, "%15s %i %*i",
665 runlevels,
666 &start_priority) != 2) {
667
668 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
669 continue;
670 }
671
672 /* A start priority gathered from the
673 * symlink farms is preferred over the
674 * data from the LSB header. */
675 if (start_priority < 0 || start_priority > 99)
676 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
677 else
678 s->sysv_start_priority = start_priority;
679
680 char_array_0(runlevels);
681 k = delete_chars(runlevels, WHITESPACE "-");
682
683 if (k[0]) {
684 char *d;
685
686 if (!(d = strdup(k))) {
687 r = -ENOMEM;
688 goto finish;
689 }
690
691 free(s->sysv_runlevels);
692 s->sysv_runlevels = d;
693 }
694
695 } else if (startswith_no_case(t, "description:")) {
696
697 size_t k = strlen(t);
698 char *d;
699 const char *j;
700
701 if (t[k-1] == '\\') {
702 state = DESCRIPTION;
703 t[k-1] = 0;
704 }
705
706 if ((j = strstrip(t+12)) && *j) {
707 if (!(d = strdup(j))) {
708 r = -ENOMEM;
709 goto finish;
710 }
711 } else
712 d = NULL;
713
714 free(chkconfig_description);
715 chkconfig_description = d;
716
717 } else if (startswith_no_case(t, "pidfile:")) {
718
719 char *fn;
720
721 state = NORMAL;
722
723 fn = strstrip(t+8);
724 if (!path_is_absolute(fn)) {
725 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
726 continue;
727 }
728
729 if (!(fn = strdup(fn))) {
730 r = -ENOMEM;
731 goto finish;
732 }
733
734 free(s->pid_file);
735 s->pid_file = fn;
736 }
737
738 } else if (state == DESCRIPTION) {
739
740 /* Try to parse Red Hat style description
741 * continuation */
742
743 size_t k = strlen(t);
744 char *j;
745
746 if (t[k-1] == '\\')
747 t[k-1] = 0;
748 else
749 state = NORMAL;
750
751 if ((j = strstrip(t)) && *j) {
752 char *d = NULL;
753
754 if (chkconfig_description)
755 d = strjoin(chkconfig_description, " ", j, NULL);
756 else
757 d = strdup(j);
758
759 if (!d) {
760 r = -ENOMEM;
761 goto finish;
762 }
763
764 free(chkconfig_description);
765 chkconfig_description = d;
766 }
767
768 } else if (state == LSB || state == LSB_DESCRIPTION) {
769
770 if (startswith_no_case(t, "Provides:")) {
771 char *i, *w;
772 size_t z;
773
774 state = LSB;
775
776 FOREACH_WORD_QUOTED(w, z, t+9, i) {
777 char *n, *m;
778
779 if (!(n = strndup(w, z))) {
780 r = -ENOMEM;
781 goto finish;
782 }
783
784 r = sysv_translate_facility(n, path_get_file_name(path), &m);
785 free(n);
786
787 if (r < 0)
788 goto finish;
789
790 if (r == 0)
791 continue;
792
793 if (unit_name_to_type(m) == UNIT_SERVICE)
794 r = unit_add_name(u, m);
795 else
796 /* NB: SysV targets
797 * which are provided
798 * by a service are
799 * pulled in by the
800 * services, as an
801 * indication that the
802 * generic service is
803 * now available. This
804 * is strictly
805 * one-way. The
806 * targets do NOT pull
807 * in the SysV
808 * services! */
809 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
810
811 if (r < 0)
812 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
813
814 free(m);
815 }
816
817 } else if (startswith_no_case(t, "Required-Start:") ||
818 startswith_no_case(t, "Should-Start:") ||
819 startswith_no_case(t, "X-Start-Before:") ||
820 startswith_no_case(t, "X-Start-After:")) {
821 char *i, *w;
822 size_t z;
823
824 state = LSB;
825
826 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
827 char *n, *m;
828
829 if (!(n = strndup(w, z))) {
830 r = -ENOMEM;
831 goto finish;
832 }
833
834 r = sysv_translate_facility(n, path_get_file_name(path), &m);
835
836 if (r < 0) {
837 log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r));
838 free(n);
839 continue;
840 }
841
842 free(n);
843
844 if (r == 0)
845 continue;
846
847 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
848
849 if (r < 0)
850 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
851
852 free(m);
853 }
854 } else if (startswith_no_case(t, "Default-Start:")) {
855 char *k, *d;
856
857 state = LSB;
858
859 k = delete_chars(t+14, WHITESPACE "-");
860
861 if (k[0] != 0) {
862 if (!(d = strdup(k))) {
863 r = -ENOMEM;
864 goto finish;
865 }
866
867 free(s->sysv_runlevels);
868 s->sysv_runlevels = d;
869 }
870
871 } else if (startswith_no_case(t, "Description:")) {
872 char *d, *j;
873
874 state = LSB_DESCRIPTION;
875
876 if ((j = strstrip(t+12)) && *j) {
877 if (!(d = strdup(j))) {
878 r = -ENOMEM;
879 goto finish;
880 }
881 } else
882 d = NULL;
883
884 free(long_description);
885 long_description = d;
886
887 } else if (startswith_no_case(t, "Short-Description:")) {
888 char *d, *j;
889
890 state = LSB;
891
892 if ((j = strstrip(t+18)) && *j) {
893 if (!(d = strdup(j))) {
894 r = -ENOMEM;
895 goto finish;
896 }
897 } else
898 d = NULL;
899
900 free(short_description);
901 short_description = d;
902
903 } else if (state == LSB_DESCRIPTION) {
904
905 if (startswith(l, "#\t") || startswith(l, "# ")) {
906 char *j;
907
908 if ((j = strstrip(t)) && *j) {
909 char *d = NULL;
910
911 if (long_description)
912 d = strjoin(long_description, " ", t, NULL);
913 else
914 d = strdup(j);
915
916 if (!d) {
917 r = -ENOMEM;
918 goto finish;
919 }
920
921 free(long_description);
922 long_description = d;
923 }
924
925 } else
926 state = LSB;
927 }
928 }
929 }
930
931 if ((r = sysv_exec_commands(s, supports_reload)) < 0)
932 goto finish;
933 if (s->sysv_runlevels &&
934 chars_intersect(RUNLEVELS_BOOT, s->sysv_runlevels) &&
935 chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
936 /* Service has both boot and "up" runlevels
937 configured. Kill the "up" ones. */
938 delete_chars(s->sysv_runlevels, RUNLEVELS_UP);
939 }
940
941 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
942 /* If there a runlevels configured for this service
943 * but none of the standard ones, then we assume this
944 * is some special kind of service (which might be
945 * needed for early boot) and don't create any links
946 * to it. */
947
948 UNIT(s)->default_dependencies = false;
949
950 /* Don't timeout special services during boot (like fsck) */
951 s->timeout_start_usec = 0;
952 s->timeout_stop_usec = 0;
953 } else {
954 s->timeout_start_usec = DEFAULT_SYSV_TIMEOUT_USEC;
955 s->timeout_stop_usec = DEFAULT_SYSV_TIMEOUT_USEC;
956 }
957
958 /* Special setting for all SysV services */
959 s->type = SERVICE_FORKING;
960 s->remain_after_exit = !s->pid_file;
961 s->guess_main_pid = false;
962 s->restart = SERVICE_RESTART_NO;
963 s->exec_context.ignore_sigpipe = false;
964 s->kill_context.kill_mode = KILL_PROCESS;
965
966 /* We use the long description only if
967 * no short description is set. */
968
969 if (short_description)
970 description = short_description;
971 else if (chkconfig_description)
972 description = chkconfig_description;
973 else if (long_description)
974 description = long_description;
975 else
976 description = NULL;
977
978 if (description) {
979 char *d;
980
981 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
982 r = -ENOMEM;
983 goto finish;
984 }
985
986 u->description = d;
987 }
988
989 /* The priority that has been set in /etc/rcN.d/ hierarchies
990 * takes precedence over what is stored as default in the LSB
991 * header */
992 if (s->sysv_start_priority_from_rcnd >= 0)
993 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
994
995 u->load_state = UNIT_LOADED;
996 r = 0;
997
998 finish:
999
1000 if (f)
1001 fclose(f);
1002
1003 free(short_description);
1004 free(long_description);
1005 free(chkconfig_description);
1006
1007 return r;
1008 }
1009
1010 static int service_load_sysv_name(Service *s, const char *name) {
1011 char **p;
1012
1013 assert(s);
1014 assert(name);
1015
1016 /* For SysV services we strip the boot.*, rc.* and *.sh
1017 * prefixes/suffixes. */
1018 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
1019 if (endswith(name, ".sh.service"))
1020 return -ENOENT;
1021 #endif
1022
1023 #ifdef TARGET_SUSE
1024 if (startswith(name, "boot."))
1025 return -ENOENT;
1026 #endif
1027
1028 #ifdef TARGET_FRUGALWARE
1029 if (startswith(name, "rc."))
1030 return -ENOENT;
1031 #endif
1032
1033 STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
1034 char *path;
1035 int r;
1036
1037 path = strjoin(*p, "/", name, NULL);
1038 if (!path)
1039 return -ENOMEM;
1040
1041 assert(endswith(path, ".service"));
1042 path[strlen(path)-8] = 0;
1043
1044 r = service_load_sysv_path(s, path);
1045
1046 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
1047 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1048 /* Try Debian style *.sh source'able init scripts */
1049 strcat(path, ".sh");
1050 r = service_load_sysv_path(s, path);
1051 }
1052 #endif
1053 free(path);
1054
1055 #ifdef TARGET_SUSE
1056 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1057 /* Try SUSE style boot.* init scripts */
1058
1059 path = strjoin(*p, "/boot.", name, NULL);
1060 if (!path)
1061 return -ENOMEM;
1062
1063 /* Drop .service suffix */
1064 path[strlen(path)-8] = 0;
1065 r = service_load_sysv_path(s, path);
1066 free(path);
1067 }
1068 #endif
1069
1070 #ifdef TARGET_FRUGALWARE
1071 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1072 /* Try Frugalware style rc.* init scripts */
1073
1074 path = strjoin(*p, "/rc.", name, NULL);
1075 if (!path)
1076 return -ENOMEM;
1077
1078 /* Drop .service suffix */
1079 path[strlen(path)-8] = 0;
1080 r = service_load_sysv_path(s, path);
1081 free(path);
1082 }
1083 #endif
1084
1085 if (r < 0)
1086 return r;
1087
1088 if ((UNIT(s)->load_state != UNIT_STUB))
1089 break;
1090 }
1091
1092 return 0;
1093 }
1094
1095 static int service_load_sysv(Service *s) {
1096 const char *t;
1097 Iterator i;
1098 int r;
1099
1100 assert(s);
1101
1102 /* Load service data from SysV init scripts, preferably with
1103 * LSB headers ... */
1104
1105 if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
1106 return 0;
1107
1108 if ((t = UNIT(s)->id))
1109 if ((r = service_load_sysv_name(s, t)) < 0)
1110 return r;
1111
1112 if (UNIT(s)->load_state == UNIT_STUB)
1113 SET_FOREACH(t, UNIT(s)->names, i) {
1114 if (t == UNIT(s)->id)
1115 continue;
1116
1117 if ((r = service_load_sysv_name(s, t)) < 0)
1118 return r;
1119
1120 if (UNIT(s)->load_state != UNIT_STUB)
1121 break;
1122 }
1123
1124 return 0;
1125 }
1126 #endif
1127
1128 static int fsck_fix_order(Service *s) {
1129 Unit *other;
1130 int r;
1131
1132 assert(s);
1133
1134 if (s->fsck_passno <= 0)
1135 return 0;
1136
1137 /* For each pair of services where both have an fsck priority
1138 * we order things based on it. */
1139
1140 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
1141 Service *t;
1142 UnitDependency d;
1143
1144 t = SERVICE(other);
1145
1146 if (s == t)
1147 continue;
1148
1149 if (UNIT(t)->load_state != UNIT_LOADED)
1150 continue;
1151
1152 if (t->fsck_passno <= 0)
1153 continue;
1154
1155 if (t->fsck_passno < s->fsck_passno)
1156 d = UNIT_AFTER;
1157 else if (t->fsck_passno > s->fsck_passno)
1158 d = UNIT_BEFORE;
1159 else
1160 continue;
1161
1162 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
1163 return r;
1164 }
1165
1166 return 0;
1167 }
1168
1169 static int service_verify(Service *s) {
1170 assert(s);
1171
1172 if (UNIT(s)->load_state != UNIT_LOADED)
1173 return 0;
1174
1175 if (!s->exec_command[SERVICE_EXEC_START]) {
1176 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
1177 return -EINVAL;
1178 }
1179
1180 if (s->type != SERVICE_ONESHOT &&
1181 s->exec_command[SERVICE_EXEC_START]->command_next) {
1182 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1183 return -EINVAL;
1184 }
1185
1186 if (s->type == SERVICE_DBUS && !s->bus_name) {
1187 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id);
1188 return -EINVAL;
1189 }
1190
1191 if (s->bus_name && s->type != SERVICE_DBUS)
1192 log_warning("%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id);
1193
1194 if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) {
1195 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
1196 return -EINVAL;
1197 }
1198
1199 return 0;
1200 }
1201
1202 static int service_add_default_dependencies(Service *s) {
1203 int r;
1204
1205 assert(s);
1206
1207 /* Add a number of automatic dependencies useful for the
1208 * majority of services. */
1209
1210 /* First, pull in base system */
1211 if (UNIT(s)->manager->running_as == SYSTEMD_SYSTEM) {
1212
1213 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1214 return r;
1215
1216 } else if (UNIT(s)->manager->running_as == SYSTEMD_USER) {
1217
1218 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1219 return r;
1220 }
1221
1222 /* Second, activate normal shutdown */
1223 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1224 }
1225
1226 static void service_fix_output(Service *s) {
1227 assert(s);
1228
1229 /* If nothing has been explicitly configured, patch default
1230 * output in. If input is socket/tty we avoid this however,
1231 * since in that case we want output to default to the same
1232 * place as we read input from. */
1233
1234 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1235 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1236 s->exec_context.std_input == EXEC_INPUT_NULL)
1237 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
1238
1239 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1240 s->exec_context.std_input == EXEC_INPUT_NULL)
1241 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
1242 }
1243
1244 static int service_load(Unit *u) {
1245 int r;
1246 Service *s = SERVICE(u);
1247
1248 assert(s);
1249
1250 /* Load a .service file */
1251 if ((r = unit_load_fragment(u)) < 0)
1252 return r;
1253
1254 #ifdef HAVE_SYSV_COMPAT
1255 /* Load a classic init script as a fallback, if we couldn't find anything */
1256 if (u->load_state == UNIT_STUB)
1257 if ((r = service_load_sysv(s)) < 0)
1258 return r;
1259 #endif
1260
1261 /* Still nothing found? Then let's give up */
1262 if (u->load_state == UNIT_STUB)
1263 return -ENOENT;
1264
1265 /* We were able to load something, then let's add in the
1266 * dropin directories. */
1267 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1268 return r;
1269
1270 /* This is a new unit? Then let's add in some extras */
1271 if (u->load_state == UNIT_LOADED) {
1272 if (s->type == _SERVICE_TYPE_INVALID)
1273 s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE;
1274
1275 /* Oneshot services have disabled start timeout by default */
1276 if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined)
1277 s->timeout_start_usec = 0;
1278
1279 service_fix_output(s);
1280
1281 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1282 return r;
1283
1284 if ((r = unit_add_default_cgroups(u)) < 0)
1285 return r;
1286
1287 #ifdef HAVE_SYSV_COMPAT
1288 if ((r = sysv_fix_order(s)) < 0)
1289 return r;
1290 #endif
1291
1292 if ((r = fsck_fix_order(s)) < 0)
1293 return r;
1294
1295 if (s->bus_name)
1296 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1297 return r;
1298
1299 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1300 s->notify_access = NOTIFY_MAIN;
1301
1302 if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
1303 s->notify_access = NOTIFY_MAIN;
1304
1305 if (s->type == SERVICE_DBUS || s->bus_name)
1306 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
1307 return r;
1308
1309 if (UNIT(s)->default_dependencies)
1310 if ((r = service_add_default_dependencies(s)) < 0)
1311 return r;
1312
1313 r = unit_exec_context_defaults(u, &s->exec_context);
1314 if (r < 0)
1315 return r;
1316 }
1317
1318 return service_verify(s);
1319 }
1320
1321 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1322
1323 ServiceExecCommand c;
1324 Service *s = SERVICE(u);
1325 const char *prefix2;
1326 char *p2;
1327
1328 assert(s);
1329
1330 p2 = strappend(prefix, "\t");
1331 prefix2 = p2 ? p2 : prefix;
1332
1333 fprintf(f,
1334 "%sService State: %s\n"
1335 "%sResult: %s\n"
1336 "%sReload Result: %s\n"
1337 "%sPermissionsStartOnly: %s\n"
1338 "%sRootDirectoryStartOnly: %s\n"
1339 "%sRemainAfterExit: %s\n"
1340 "%sGuessMainPID: %s\n"
1341 "%sType: %s\n"
1342 "%sRestart: %s\n"
1343 "%sNotifyAccess: %s\n",
1344 prefix, service_state_to_string(s->state),
1345 prefix, service_result_to_string(s->result),
1346 prefix, service_result_to_string(s->reload_result),
1347 prefix, yes_no(s->permissions_start_only),
1348 prefix, yes_no(s->root_directory_start_only),
1349 prefix, yes_no(s->remain_after_exit),
1350 prefix, yes_no(s->guess_main_pid),
1351 prefix, service_type_to_string(s->type),
1352 prefix, service_restart_to_string(s->restart),
1353 prefix, notify_access_to_string(s->notify_access));
1354
1355 if (s->control_pid > 0)
1356 fprintf(f,
1357 "%sControl PID: %lu\n",
1358 prefix, (unsigned long) s->control_pid);
1359
1360 if (s->main_pid > 0)
1361 fprintf(f,
1362 "%sMain PID: %lu\n"
1363 "%sMain PID Known: %s\n"
1364 "%sMain PID Alien: %s\n",
1365 prefix, (unsigned long) s->main_pid,
1366 prefix, yes_no(s->main_pid_known),
1367 prefix, yes_no(s->main_pid_alien));
1368
1369 if (s->pid_file)
1370 fprintf(f,
1371 "%sPIDFile: %s\n",
1372 prefix, s->pid_file);
1373
1374 if (s->bus_name)
1375 fprintf(f,
1376 "%sBusName: %s\n"
1377 "%sBus Name Good: %s\n",
1378 prefix, s->bus_name,
1379 prefix, yes_no(s->bus_name_good));
1380
1381 kill_context_dump(&s->kill_context, f, prefix);
1382 exec_context_dump(&s->exec_context, f, prefix);
1383
1384 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1385
1386 if (!s->exec_command[c])
1387 continue;
1388
1389 fprintf(f, "%s-> %s:\n",
1390 prefix, service_exec_command_to_string(c));
1391
1392 exec_command_dump_list(s->exec_command[c], f, prefix2);
1393 }
1394
1395 #ifdef HAVE_SYSV_COMPAT
1396 if (s->is_sysv)
1397 fprintf(f,
1398 "%sSysV Init Script has LSB Header: %s\n"
1399 "%sSysVEnabled: %s\n",
1400 prefix, yes_no(s->sysv_has_lsb),
1401 prefix, yes_no(s->sysv_enabled));
1402
1403 if (s->sysv_start_priority >= 0)
1404 fprintf(f,
1405 "%sSysVStartPriority: %i\n",
1406 prefix, s->sysv_start_priority);
1407
1408 if (s->sysv_runlevels)
1409 fprintf(f, "%sSysVRunLevels: %s\n",
1410 prefix, s->sysv_runlevels);
1411 #endif
1412
1413 if (s->fsck_passno > 0)
1414 fprintf(f,
1415 "%sFsckPassNo: %i\n",
1416 prefix, s->fsck_passno);
1417
1418 if (s->status_text)
1419 fprintf(f, "%sStatus Text: %s\n",
1420 prefix, s->status_text);
1421
1422 free(p2);
1423 }
1424
1425 static int service_load_pid_file(Service *s, bool may_warn) {
1426 char *k;
1427 int r;
1428 pid_t pid;
1429
1430 assert(s);
1431
1432 if (!s->pid_file)
1433 return -ENOENT;
1434
1435 if ((r = read_one_line_file(s->pid_file, &k)) < 0) {
1436 if (may_warn)
1437 log_info("PID file %s not readable (yet?) after %s.",
1438 s->pid_file, service_state_to_string(s->state));
1439 return r;
1440 }
1441
1442 r = parse_pid(k, &pid);
1443 free(k);
1444
1445 if (r < 0)
1446 return r;
1447
1448 if (kill(pid, 0) < 0 && errno != EPERM) {
1449 if (may_warn)
1450 log_info("PID %lu read from file %s does not exist.",
1451 (unsigned long) pid, s->pid_file);
1452 return -ESRCH;
1453 }
1454
1455 if (s->main_pid_known) {
1456 if (pid == s->main_pid)
1457 return 0;
1458
1459 log_debug("Main PID changing: %lu -> %lu",
1460 (unsigned long) s->main_pid, (unsigned long) pid);
1461 service_unwatch_main_pid(s);
1462 s->main_pid_known = false;
1463 } else
1464 log_debug("Main PID loaded: %lu", (unsigned long) pid);
1465
1466 if ((r = service_set_main_pid(s, pid)) < 0)
1467 return r;
1468
1469 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1470 /* FIXME: we need to do something here */
1471 return r;
1472
1473 return 0;
1474 }
1475
1476 static int service_search_main_pid(Service *s) {
1477 pid_t pid;
1478 int r;
1479
1480 assert(s);
1481
1482 /* If we know it anyway, don't ever fallback to unreliable
1483 * heuristics */
1484 if (s->main_pid_known)
1485 return 0;
1486
1487 if (!s->guess_main_pid)
1488 return 0;
1489
1490 assert(s->main_pid <= 0);
1491
1492 if ((pid = cgroup_bonding_search_main_pid_list(UNIT(s)->cgroup_bondings)) <= 0)
1493 return -ENOENT;
1494
1495 log_debug("Main PID guessed: %lu", (unsigned long) pid);
1496 if ((r = service_set_main_pid(s, pid)) < 0)
1497 return r;
1498
1499 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1500 /* FIXME: we need to do something here */
1501 return r;
1502
1503 return 0;
1504 }
1505
1506 static void service_notify_sockets_dead(Service *s, bool failed_permanent) {
1507 Iterator i;
1508 Unit *u;
1509
1510 assert(s);
1511
1512 /* Notifies all our sockets when we die */
1513
1514 if (s->socket_fd >= 0)
1515 return;
1516
1517 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i)
1518 if (u->type == UNIT_SOCKET)
1519 socket_notify_service_dead(SOCKET(u), failed_permanent);
1520
1521 return;
1522 }
1523
1524 static void service_set_state(Service *s, ServiceState state) {
1525 ServiceState old_state;
1526 const UnitActiveState *table;
1527 assert(s);
1528
1529 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1530
1531 old_state = s->state;
1532 s->state = state;
1533
1534 service_unwatch_pid_file(s);
1535
1536 if (state != SERVICE_START_PRE &&
1537 state != SERVICE_START &&
1538 state != SERVICE_START_POST &&
1539 state != SERVICE_RELOAD &&
1540 state != SERVICE_STOP &&
1541 state != SERVICE_STOP_SIGTERM &&
1542 state != SERVICE_STOP_SIGKILL &&
1543 state != SERVICE_STOP_POST &&
1544 state != SERVICE_FINAL_SIGTERM &&
1545 state != SERVICE_FINAL_SIGKILL &&
1546 state != SERVICE_AUTO_RESTART)
1547 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1548
1549 if (state != SERVICE_START &&
1550 state != SERVICE_START_POST &&
1551 state != SERVICE_RUNNING &&
1552 state != SERVICE_RELOAD &&
1553 state != SERVICE_STOP &&
1554 state != SERVICE_STOP_SIGTERM &&
1555 state != SERVICE_STOP_SIGKILL) {
1556 service_unwatch_main_pid(s);
1557 s->main_command = NULL;
1558 }
1559
1560 if (state != SERVICE_START_PRE &&
1561 state != SERVICE_START &&
1562 state != SERVICE_START_POST &&
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 service_unwatch_control_pid(s);
1571 s->control_command = NULL;
1572 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1573 }
1574
1575 if (state == SERVICE_DEAD ||
1576 state == SERVICE_STOP ||
1577 state == SERVICE_STOP_SIGTERM ||
1578 state == SERVICE_STOP_SIGKILL ||
1579 state == SERVICE_STOP_POST ||
1580 state == SERVICE_FINAL_SIGTERM ||
1581 state == SERVICE_FINAL_SIGKILL ||
1582 state == SERVICE_FAILED ||
1583 state == SERVICE_AUTO_RESTART)
1584 service_notify_sockets_dead(s, false);
1585
1586 if (state != SERVICE_START_PRE &&
1587 state != SERVICE_START &&
1588 state != SERVICE_START_POST &&
1589 state != SERVICE_RUNNING &&
1590 state != SERVICE_RELOAD &&
1591 state != SERVICE_STOP &&
1592 state != SERVICE_STOP_SIGTERM &&
1593 state != SERVICE_STOP_SIGKILL &&
1594 state != SERVICE_STOP_POST &&
1595 state != SERVICE_FINAL_SIGTERM &&
1596 state != SERVICE_FINAL_SIGKILL &&
1597 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1598 service_close_socket_fd(s);
1599 service_connection_unref(s);
1600 }
1601
1602 if (state == SERVICE_STOP)
1603 service_stop_watchdog(s);
1604
1605 /* For the inactive states unit_notify() will trim the cgroup,
1606 * but for exit we have to do that ourselves... */
1607 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1608 cgroup_bonding_trim_list(UNIT(s)->cgroup_bondings, true);
1609
1610 if (old_state != state)
1611 log_struct(LOG_DEBUG,
1612 "UNIT=%s", UNIT(s)->id,
1613 "MESSAGE=%s changed %s -> %s", UNIT(s)->id,
1614 service_state_to_string(old_state),
1615 service_state_to_string(state),
1616 NULL);
1617
1618 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1619 s->reload_result = SERVICE_SUCCESS;
1620 }
1621
1622 static int service_coldplug(Unit *u) {
1623 Service *s = SERVICE(u);
1624 int r;
1625
1626 assert(s);
1627 assert(s->state == SERVICE_DEAD);
1628
1629 if (s->deserialized_state != s->state) {
1630
1631 if (s->deserialized_state == SERVICE_START_PRE ||
1632 s->deserialized_state == SERVICE_START ||
1633 s->deserialized_state == SERVICE_START_POST ||
1634 s->deserialized_state == SERVICE_RELOAD ||
1635 s->deserialized_state == SERVICE_STOP ||
1636 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1637 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1638 s->deserialized_state == SERVICE_STOP_POST ||
1639 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1640 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1641 s->deserialized_state == SERVICE_AUTO_RESTART) {
1642 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_start_usec > 0) {
1643 usec_t k;
1644
1645 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_start_usec;
1646
1647 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1648 return r;
1649 }
1650 }
1651
1652 if ((s->deserialized_state == SERVICE_START &&
1653 (s->type == SERVICE_FORKING ||
1654 s->type == SERVICE_DBUS ||
1655 s->type == SERVICE_ONESHOT ||
1656 s->type == SERVICE_NOTIFY)) ||
1657 s->deserialized_state == SERVICE_START_POST ||
1658 s->deserialized_state == SERVICE_RUNNING ||
1659 s->deserialized_state == SERVICE_RELOAD ||
1660 s->deserialized_state == SERVICE_STOP ||
1661 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1662 s->deserialized_state == SERVICE_STOP_SIGKILL)
1663 if (s->main_pid > 0)
1664 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1665 return r;
1666
1667 if (s->deserialized_state == SERVICE_START_PRE ||
1668 s->deserialized_state == SERVICE_START ||
1669 s->deserialized_state == SERVICE_START_POST ||
1670 s->deserialized_state == SERVICE_RELOAD ||
1671 s->deserialized_state == SERVICE_STOP ||
1672 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1673 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1674 s->deserialized_state == SERVICE_STOP_POST ||
1675 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1676 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1677 if (s->control_pid > 0)
1678 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1679 return r;
1680
1681 if (s->deserialized_state == SERVICE_START_POST ||
1682 s->deserialized_state == SERVICE_RUNNING)
1683 service_handle_watchdog(s);
1684
1685 service_set_state(s, s->deserialized_state);
1686 }
1687 return 0;
1688 }
1689
1690 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1691 Iterator i;
1692 int r;
1693 int *rfds = NULL;
1694 unsigned rn_fds = 0;
1695 Unit *u;
1696
1697 assert(s);
1698 assert(fds);
1699 assert(n_fds);
1700
1701 if (s->socket_fd >= 0)
1702 return 0;
1703
1704 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1705 int *cfds;
1706 unsigned cn_fds;
1707 Socket *sock;
1708
1709 if (u->type != UNIT_SOCKET)
1710 continue;
1711
1712 sock = SOCKET(u);
1713
1714 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1715 goto fail;
1716
1717 if (!cfds)
1718 continue;
1719
1720 if (!rfds) {
1721 rfds = cfds;
1722 rn_fds = cn_fds;
1723 } else {
1724 int *t;
1725
1726 if (!(t = new(int, rn_fds+cn_fds))) {
1727 free(cfds);
1728 r = -ENOMEM;
1729 goto fail;
1730 }
1731
1732 memcpy(t, rfds, rn_fds * sizeof(int));
1733 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1734 free(rfds);
1735 free(cfds);
1736
1737 rfds = t;
1738 rn_fds = rn_fds+cn_fds;
1739 }
1740 }
1741
1742 *fds = rfds;
1743 *n_fds = rn_fds;
1744
1745 return 0;
1746
1747 fail:
1748 free(rfds);
1749
1750 return r;
1751 }
1752
1753 static int service_spawn(
1754 Service *s,
1755 ExecCommand *c,
1756 bool timeout,
1757 bool pass_fds,
1758 bool apply_permissions,
1759 bool apply_chroot,
1760 bool apply_tty_stdin,
1761 bool set_notify_socket,
1762 bool is_control,
1763 pid_t *_pid) {
1764
1765 pid_t pid;
1766 int r;
1767 int *fds = NULL, *fdsbuf = NULL;
1768 unsigned n_fds = 0, n_env = 0;
1769 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1770
1771 assert(s);
1772 assert(c);
1773 assert(_pid);
1774
1775 if (pass_fds ||
1776 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1777 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1778 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1779
1780 if (s->socket_fd >= 0) {
1781 fds = &s->socket_fd;
1782 n_fds = 1;
1783 } else {
1784 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1785 goto fail;
1786
1787 fds = fdsbuf;
1788 }
1789 }
1790
1791 if (timeout && s->timeout_start_usec) {
1792 r = unit_watch_timer(UNIT(s), s->timeout_start_usec, &s->timer_watch);
1793 if (r < 0)
1794 goto fail;
1795 } else
1796 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1797
1798 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1799 r = -ENOMEM;
1800 goto fail;
1801 }
1802
1803 our_env = new0(char*, 5);
1804 if (!our_env) {
1805 r = -ENOMEM;
1806 goto fail;
1807 }
1808
1809 if (set_notify_socket)
1810 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1811 r = -ENOMEM;
1812 goto fail;
1813 }
1814
1815 if (s->main_pid > 0)
1816 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1817 r = -ENOMEM;
1818 goto fail;
1819 }
1820
1821 if (s->watchdog_usec > 0)
1822 if (asprintf(our_env + n_env++, "WATCHDOG_USEC=%llu", (unsigned long long) s->watchdog_usec) < 0) {
1823 r = -ENOMEM;
1824 goto fail;
1825 }
1826
1827 if (s->meta.manager->running_as != SYSTEMD_SYSTEM)
1828 if (asprintf(our_env + n_env++, "MANAGERPID=%lu", (unsigned long) getpid()) < 0) {
1829 r = -ENOMEM;
1830 goto fail;
1831 }
1832
1833 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
1834 if (!final_env) {
1835 r = -ENOMEM;
1836 goto fail;
1837 }
1838
1839 r = exec_spawn(c,
1840 argv,
1841 &s->exec_context,
1842 fds, n_fds,
1843 final_env,
1844 apply_permissions,
1845 apply_chroot,
1846 apply_tty_stdin,
1847 UNIT(s)->manager->confirm_spawn,
1848 UNIT(s)->cgroup_bondings,
1849 UNIT(s)->cgroup_attributes,
1850 is_control ? "control" : NULL,
1851 UNIT(s)->id,
1852 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1853 &pid);
1854
1855 if (r < 0)
1856 goto fail;
1857
1858 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1859 /* FIXME: we need to do something here */
1860 goto fail;
1861
1862 free(fdsbuf);
1863 strv_free(argv);
1864 strv_free(our_env);
1865 strv_free(final_env);
1866
1867 *_pid = pid;
1868
1869 return 0;
1870
1871 fail:
1872 free(fdsbuf);
1873 strv_free(argv);
1874 strv_free(our_env);
1875 strv_free(final_env);
1876
1877 if (timeout)
1878 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1879
1880 return r;
1881 }
1882
1883 static int main_pid_good(Service *s) {
1884 assert(s);
1885
1886 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1887 * don't know */
1888
1889 /* If we know the pid file, then lets just check if it is
1890 * still valid */
1891 if (s->main_pid_known) {
1892
1893 /* If it's an alien child let's check if it is still
1894 * alive ... */
1895 if (s->main_pid_alien)
1896 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1897
1898 /* .. otherwise assume we'll get a SIGCHLD for it,
1899 * which we really should wait for to collect exit
1900 * status and code */
1901 return s->main_pid > 0;
1902 }
1903
1904 /* We don't know the pid */
1905 return -EAGAIN;
1906 }
1907
1908 static int control_pid_good(Service *s) {
1909 assert(s);
1910
1911 return s->control_pid > 0;
1912 }
1913
1914 static int cgroup_good(Service *s) {
1915 int r;
1916
1917 assert(s);
1918
1919 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->cgroup_bondings)) < 0)
1920 return r;
1921
1922 return !r;
1923 }
1924
1925 static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1926 int r;
1927 assert(s);
1928
1929 if (f != SERVICE_SUCCESS)
1930 s->result = f;
1931
1932 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1933
1934 if (allow_restart &&
1935 !s->forbid_restart &&
1936 (s->restart == SERVICE_RESTART_ALWAYS ||
1937 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1938 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1939 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1940 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1941 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1942 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1943 (s->result != SERVICE_FAILURE_SIGNAL ||
1944 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))
1945 ) {
1946
1947 r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch);
1948 if (r < 0)
1949 goto fail;
1950
1951 service_set_state(s, SERVICE_AUTO_RESTART);
1952 }
1953
1954 s->forbid_restart = false;
1955
1956 return;
1957
1958 fail:
1959 log_warning("%s failed to run install restart timer: %s", UNIT(s)->id, strerror(-r));
1960 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1961 }
1962
1963 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
1964
1965 static void service_enter_stop_post(Service *s, ServiceResult f) {
1966 int r;
1967 assert(s);
1968
1969 if (f != SERVICE_SUCCESS)
1970 s->result = f;
1971
1972 service_unwatch_control_pid(s);
1973
1974 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1975 s->control_command_id = SERVICE_EXEC_STOP_POST;
1976
1977 r = service_spawn(s,
1978 s->control_command,
1979 true,
1980 false,
1981 !s->permissions_start_only,
1982 !s->root_directory_start_only,
1983 true,
1984 false,
1985 true,
1986 &s->control_pid);
1987 if (r < 0)
1988 goto fail;
1989
1990
1991 service_set_state(s, SERVICE_STOP_POST);
1992 } else
1993 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
1994
1995 return;
1996
1997 fail:
1998 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r));
1999 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2000 }
2001
2002 static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
2003 int r;
2004 Set *pid_set = NULL;
2005 bool wait_for_exit = false;
2006
2007 assert(s);
2008
2009 if (f != SERVICE_SUCCESS)
2010 s->result = f;
2011
2012 if (s->kill_context.kill_mode != KILL_NONE) {
2013 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->kill_context.kill_signal : SIGKILL;
2014
2015 if (s->main_pid > 0) {
2016 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
2017 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
2018 else
2019 wait_for_exit = !s->main_pid_alien;
2020 }
2021
2022 if (s->control_pid > 0) {
2023 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
2024 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
2025 else
2026 wait_for_exit = true;
2027 }
2028
2029 if (s->kill_context.kill_mode == KILL_CONTROL_GROUP) {
2030
2031 pid_set = set_new(trivial_hash_func, trivial_compare_func);
2032 if (!pid_set) {
2033 r = -ENOMEM;
2034 goto fail;
2035 }
2036
2037 /* Exclude the main/control pids from being killed via the cgroup */
2038 if (s->main_pid > 0)
2039 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
2040 goto fail;
2041
2042 if (s->control_pid > 0)
2043 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
2044 goto fail;
2045
2046 r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, false, pid_set, NULL);
2047 if (r < 0) {
2048 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
2049 log_warning("Failed to kill control group: %s", strerror(-r));
2050 } else if (r > 0)
2051 wait_for_exit = true;
2052
2053 set_free(pid_set);
2054 pid_set = NULL;
2055 }
2056 }
2057
2058 if (wait_for_exit) {
2059 if (s->timeout_stop_usec > 0) {
2060 r = unit_watch_timer(UNIT(s), s->timeout_stop_usec, &s->timer_watch);
2061 if (r < 0)
2062 goto fail;
2063 }
2064
2065 service_set_state(s, state);
2066 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2067 service_enter_stop_post(s, SERVICE_SUCCESS);
2068 else
2069 service_enter_dead(s, SERVICE_SUCCESS, true);
2070
2071 return;
2072
2073 fail:
2074 log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
2075
2076 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2077 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
2078 else
2079 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2080
2081 if (pid_set)
2082 set_free(pid_set);
2083 }
2084
2085 static void service_enter_stop(Service *s, ServiceResult f) {
2086 int r;
2087
2088 assert(s);
2089
2090 if (f != SERVICE_SUCCESS)
2091 s->result = f;
2092
2093 service_unwatch_control_pid(s);
2094
2095 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
2096 s->control_command_id = SERVICE_EXEC_STOP;
2097
2098 r = service_spawn(s,
2099 s->control_command,
2100 true,
2101 false,
2102 !s->permissions_start_only,
2103 !s->root_directory_start_only,
2104 false,
2105 false,
2106 true,
2107 &s->control_pid);
2108 if (r < 0)
2109 goto fail;
2110
2111 service_set_state(s, SERVICE_STOP);
2112 } else
2113 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2114
2115 return;
2116
2117 fail:
2118 log_warning("%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2119 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2120 }
2121
2122 static void service_enter_running(Service *s, ServiceResult f) {
2123 int main_pid_ok, cgroup_ok;
2124 assert(s);
2125
2126 if (f != SERVICE_SUCCESS)
2127 s->result = f;
2128
2129 main_pid_ok = main_pid_good(s);
2130 cgroup_ok = cgroup_good(s);
2131
2132 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2133 (s->bus_name_good || s->type != SERVICE_DBUS))
2134 service_set_state(s, SERVICE_RUNNING);
2135 else if (s->remain_after_exit)
2136 service_set_state(s, SERVICE_EXITED);
2137 else
2138 service_enter_stop(s, SERVICE_SUCCESS);
2139 }
2140
2141 static void service_enter_start_post(Service *s) {
2142 int r;
2143 assert(s);
2144
2145 service_unwatch_control_pid(s);
2146
2147 if (s->watchdog_usec > 0)
2148 service_reset_watchdog(s);
2149
2150 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
2151 s->control_command_id = SERVICE_EXEC_START_POST;
2152
2153 r = service_spawn(s,
2154 s->control_command,
2155 true,
2156 false,
2157 !s->permissions_start_only,
2158 !s->root_directory_start_only,
2159 false,
2160 false,
2161 true,
2162 &s->control_pid);
2163 if (r < 0)
2164 goto fail;
2165
2166 service_set_state(s, SERVICE_START_POST);
2167 } else
2168 service_enter_running(s, SERVICE_SUCCESS);
2169
2170 return;
2171
2172 fail:
2173 log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2174 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2175 }
2176
2177 static void service_enter_start(Service *s) {
2178 pid_t pid;
2179 int r;
2180 ExecCommand *c;
2181
2182 assert(s);
2183
2184 assert(s->exec_command[SERVICE_EXEC_START]);
2185 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2186
2187 if (s->type == SERVICE_FORKING)
2188 service_unwatch_control_pid(s);
2189 else
2190 service_unwatch_main_pid(s);
2191
2192 /* We want to ensure that nobody leaks processes from
2193 * START_PRE here, so let's go on a killing spree, People
2194 * should not spawn long running processes from START_PRE. */
2195 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2196
2197 if (s->type == SERVICE_FORKING) {
2198 s->control_command_id = SERVICE_EXEC_START;
2199 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2200
2201 s->main_command = NULL;
2202 } else {
2203 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2204 s->control_command = NULL;
2205
2206 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2207 }
2208
2209 r = service_spawn(s,
2210 c,
2211 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2212 true,
2213 true,
2214 true,
2215 true,
2216 s->notify_access != NOTIFY_NONE,
2217 false,
2218 &pid);
2219 if (r < 0)
2220 goto fail;
2221
2222 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2223 /* For simple services we immediately start
2224 * the START_POST binaries. */
2225
2226 service_set_main_pid(s, pid);
2227 service_enter_start_post(s);
2228
2229 } else if (s->type == SERVICE_FORKING) {
2230
2231 /* For forking services we wait until the start
2232 * process exited. */
2233
2234 s->control_pid = pid;
2235 service_set_state(s, SERVICE_START);
2236
2237 } else if (s->type == SERVICE_ONESHOT ||
2238 s->type == SERVICE_DBUS ||
2239 s->type == SERVICE_NOTIFY) {
2240
2241 /* For oneshot services we wait until the start
2242 * process exited, too, but it is our main process. */
2243
2244 /* For D-Bus services we know the main pid right away,
2245 * but wait for the bus name to appear on the
2246 * bus. Notify services are similar. */
2247
2248 service_set_main_pid(s, pid);
2249 service_set_state(s, SERVICE_START);
2250 } else
2251 assert_not_reached("Unknown service type");
2252
2253 return;
2254
2255 fail:
2256 log_warning("%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2257 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2258 }
2259
2260 static void service_enter_start_pre(Service *s) {
2261 int r;
2262
2263 assert(s);
2264
2265 service_unwatch_control_pid(s);
2266
2267 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2268
2269 /* Before we start anything, let's clear up what might
2270 * be left from previous runs. */
2271 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2272
2273 s->control_command_id = SERVICE_EXEC_START_PRE;
2274
2275 r = service_spawn(s,
2276 s->control_command,
2277 true,
2278 false,
2279 !s->permissions_start_only,
2280 !s->root_directory_start_only,
2281 true,
2282 false,
2283 true,
2284 &s->control_pid);
2285 if (r < 0)
2286 goto fail;
2287
2288 service_set_state(s, SERVICE_START_PRE);
2289 } else
2290 service_enter_start(s);
2291
2292 return;
2293
2294 fail:
2295 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2296 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2297 }
2298
2299 static void service_enter_restart(Service *s) {
2300 int r;
2301 DBusError error;
2302
2303 assert(s);
2304 dbus_error_init(&error);
2305
2306 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2307 /* Don't restart things if we are going down anyway */
2308 log_info("Stop job pending for unit, delaying automatic restart.");
2309
2310 r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch);
2311 if (r < 0)
2312 goto fail;
2313
2314 return;
2315 }
2316
2317 /* Any units that are bound to this service must also be
2318 * restarted. We use JOB_RESTART (instead of the more obvious
2319 * JOB_START) here so that those dependency jobs will be added
2320 * as well. */
2321 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2322 if (r < 0)
2323 goto fail;
2324
2325 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2326 * it will be canceled as part of the service_stop() call that
2327 * is executed as part of JOB_RESTART. */
2328
2329 log_debug("%s scheduled restart job.", UNIT(s)->id);
2330 return;
2331
2332 fail:
2333 log_warning("%s failed to schedule restart job: %s", UNIT(s)->id, bus_error(&error, -r));
2334 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2335
2336 dbus_error_free(&error);
2337 }
2338
2339 static void service_enter_reload(Service *s) {
2340 int r;
2341
2342 assert(s);
2343
2344 service_unwatch_control_pid(s);
2345
2346 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2347 s->control_command_id = SERVICE_EXEC_RELOAD;
2348
2349 r = service_spawn(s,
2350 s->control_command,
2351 true,
2352 false,
2353 !s->permissions_start_only,
2354 !s->root_directory_start_only,
2355 false,
2356 false,
2357 true,
2358 &s->control_pid);
2359 if (r < 0)
2360 goto fail;
2361
2362 service_set_state(s, SERVICE_RELOAD);
2363 } else
2364 service_enter_running(s, SERVICE_SUCCESS);
2365
2366 return;
2367
2368 fail:
2369 log_warning("%s failed to run 'reload' task: %s", UNIT(s)->id, strerror(-r));
2370 s->reload_result = SERVICE_FAILURE_RESOURCES;
2371 service_enter_running(s, SERVICE_SUCCESS);
2372 }
2373
2374 static void service_run_next_control(Service *s) {
2375 int r;
2376
2377 assert(s);
2378 assert(s->control_command);
2379 assert(s->control_command->command_next);
2380
2381 assert(s->control_command_id != SERVICE_EXEC_START);
2382
2383 s->control_command = s->control_command->command_next;
2384 service_unwatch_control_pid(s);
2385
2386 r = service_spawn(s,
2387 s->control_command,
2388 true,
2389 false,
2390 !s->permissions_start_only,
2391 !s->root_directory_start_only,
2392 s->control_command_id == SERVICE_EXEC_START_PRE ||
2393 s->control_command_id == SERVICE_EXEC_STOP_POST,
2394 false,
2395 true,
2396 &s->control_pid);
2397 if (r < 0)
2398 goto fail;
2399
2400 return;
2401
2402 fail:
2403 log_warning("%s failed to run next control task: %s", UNIT(s)->id, strerror(-r));
2404
2405 if (s->state == SERVICE_START_PRE)
2406 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2407 else if (s->state == SERVICE_STOP)
2408 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2409 else if (s->state == SERVICE_STOP_POST)
2410 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2411 else if (s->state == SERVICE_RELOAD) {
2412 s->reload_result = SERVICE_FAILURE_RESOURCES;
2413 service_enter_running(s, SERVICE_SUCCESS);
2414 } else
2415 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2416 }
2417
2418 static void service_run_next_main(Service *s) {
2419 pid_t pid;
2420 int r;
2421
2422 assert(s);
2423 assert(s->main_command);
2424 assert(s->main_command->command_next);
2425 assert(s->type == SERVICE_ONESHOT);
2426
2427 s->main_command = s->main_command->command_next;
2428 service_unwatch_main_pid(s);
2429
2430 r = service_spawn(s,
2431 s->main_command,
2432 true,
2433 true,
2434 true,
2435 true,
2436 true,
2437 s->notify_access != NOTIFY_NONE,
2438 false,
2439 &pid);
2440 if (r < 0)
2441 goto fail;
2442
2443 service_set_main_pid(s, pid);
2444
2445 return;
2446
2447 fail:
2448 log_warning("%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2449 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2450 }
2451
2452 static int service_start_limit_test(Service *s) {
2453 assert(s);
2454
2455 if (ratelimit_test(&s->start_limit))
2456 return 0;
2457
2458 switch (s->start_limit_action) {
2459
2460 case SERVICE_START_LIMIT_NONE:
2461 log_warning("%s start request repeated too quickly, refusing to start.", UNIT(s)->id);
2462 break;
2463
2464 case SERVICE_START_LIMIT_REBOOT: {
2465 DBusError error;
2466 int r;
2467
2468 dbus_error_init(&error);
2469
2470 log_warning("%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2471
2472 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START, SPECIAL_REBOOT_TARGET, JOB_REPLACE, true, &error, NULL);
2473 if (r < 0) {
2474 log_error("Failed to reboot: %s.", bus_error(&error, r));
2475 dbus_error_free(&error);
2476 }
2477
2478 break;
2479 }
2480
2481 case SERVICE_START_LIMIT_REBOOT_FORCE:
2482 log_warning("%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2483 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2484 break;
2485
2486 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2487 log_warning("%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2488 sync();
2489 reboot(RB_AUTOBOOT);
2490 break;
2491
2492 default:
2493 log_error("start limit action=%i", s->start_limit_action);
2494 assert_not_reached("Unknown StartLimitAction.");
2495 }
2496
2497 return -ECANCELED;
2498 }
2499
2500 static int service_start(Unit *u) {
2501 Service *s = SERVICE(u);
2502 int r;
2503
2504 assert(s);
2505
2506 /* We cannot fulfill this request right now, try again later
2507 * please! */
2508 if (s->state == SERVICE_STOP ||
2509 s->state == SERVICE_STOP_SIGTERM ||
2510 s->state == SERVICE_STOP_SIGKILL ||
2511 s->state == SERVICE_STOP_POST ||
2512 s->state == SERVICE_FINAL_SIGTERM ||
2513 s->state == SERVICE_FINAL_SIGKILL)
2514 return -EAGAIN;
2515
2516 /* Already on it! */
2517 if (s->state == SERVICE_START_PRE ||
2518 s->state == SERVICE_START ||
2519 s->state == SERVICE_START_POST)
2520 return 0;
2521
2522 /* A service that will be restarted must be stopped first to
2523 * trigger BindsTo and/or OnFailure dependencies. If a user
2524 * does not want to wait for the holdoff time to elapse, the
2525 * service should be manually restarted, not started. We
2526 * simply return EAGAIN here, so that any start jobs stay
2527 * queued, and assume that the auto restart timer will
2528 * eventually trigger the restart. */
2529 if (s->state == SERVICE_AUTO_RESTART)
2530 return -EAGAIN;
2531
2532 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2533
2534 /* Make sure we don't enter a busy loop of some kind. */
2535 r = service_start_limit_test(s);
2536 if (r < 0) {
2537 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
2538 return r;
2539 }
2540
2541 s->result = SERVICE_SUCCESS;
2542 s->reload_result = SERVICE_SUCCESS;
2543 s->main_pid_known = false;
2544 s->main_pid_alien = false;
2545 s->forbid_restart = false;
2546
2547 service_enter_start_pre(s);
2548 return 0;
2549 }
2550
2551 static int service_stop(Unit *u) {
2552 Service *s = SERVICE(u);
2553
2554 assert(s);
2555
2556 /* Don't create restart jobs from here. */
2557 s->forbid_restart = true;
2558
2559 /* Already on it */
2560 if (s->state == SERVICE_STOP ||
2561 s->state == SERVICE_STOP_SIGTERM ||
2562 s->state == SERVICE_STOP_SIGKILL ||
2563 s->state == SERVICE_STOP_POST ||
2564 s->state == SERVICE_FINAL_SIGTERM ||
2565 s->state == SERVICE_FINAL_SIGKILL)
2566 return 0;
2567
2568 /* A restart will be scheduled or is in progress. */
2569 if (s->state == SERVICE_AUTO_RESTART) {
2570 service_set_state(s, SERVICE_DEAD);
2571 return 0;
2572 }
2573
2574 /* If there's already something running we go directly into
2575 * kill mode. */
2576 if (s->state == SERVICE_START_PRE ||
2577 s->state == SERVICE_START ||
2578 s->state == SERVICE_START_POST ||
2579 s->state == SERVICE_RELOAD) {
2580 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2581 return 0;
2582 }
2583
2584 assert(s->state == SERVICE_RUNNING ||
2585 s->state == SERVICE_EXITED);
2586
2587 service_enter_stop(s, SERVICE_SUCCESS);
2588 return 0;
2589 }
2590
2591 static int service_reload(Unit *u) {
2592 Service *s = SERVICE(u);
2593
2594 assert(s);
2595
2596 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2597
2598 service_enter_reload(s);
2599 return 0;
2600 }
2601
2602 static bool service_can_reload(Unit *u) {
2603 Service *s = SERVICE(u);
2604
2605 assert(s);
2606
2607 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2608 }
2609
2610 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2611 Service *s = SERVICE(u);
2612
2613 assert(u);
2614 assert(f);
2615 assert(fds);
2616
2617 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2618 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2619 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2620
2621 if (s->control_pid > 0)
2622 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2623
2624 if (s->main_pid_known && s->main_pid > 0)
2625 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2626
2627 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2628
2629 if (s->status_text)
2630 unit_serialize_item(u, f, "status-text", s->status_text);
2631
2632 /* FIXME: There's a minor uncleanliness here: if there are
2633 * multiple commands attached here, we will start from the
2634 * first one again */
2635 if (s->control_command_id >= 0)
2636 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2637
2638 if (s->socket_fd >= 0) {
2639 int copy;
2640
2641 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2642 return copy;
2643
2644 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2645 }
2646
2647 if (s->main_exec_status.pid > 0) {
2648 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2649 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2650 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2651
2652 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2653 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2654 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2655 }
2656 }
2657 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2658 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2659
2660 return 0;
2661 }
2662
2663 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2664 Service *s = SERVICE(u);
2665
2666 assert(u);
2667 assert(key);
2668 assert(value);
2669 assert(fds);
2670
2671 if (streq(key, "state")) {
2672 ServiceState state;
2673
2674 if ((state = service_state_from_string(value)) < 0)
2675 log_debug("Failed to parse state value %s", value);
2676 else
2677 s->deserialized_state = state;
2678 } else if (streq(key, "result")) {
2679 ServiceResult f;
2680
2681 f = service_result_from_string(value);
2682 if (f < 0)
2683 log_debug("Failed to parse result value %s", value);
2684 else if (f != SERVICE_SUCCESS)
2685 s->result = f;
2686
2687 } else if (streq(key, "reload-result")) {
2688 ServiceResult f;
2689
2690 f = service_result_from_string(value);
2691 if (f < 0)
2692 log_debug("Failed to parse reload result value %s", value);
2693 else if (f != SERVICE_SUCCESS)
2694 s->reload_result = f;
2695
2696 } else if (streq(key, "control-pid")) {
2697 pid_t pid;
2698
2699 if (parse_pid(value, &pid) < 0)
2700 log_debug("Failed to parse control-pid value %s", value);
2701 else
2702 s->control_pid = pid;
2703 } else if (streq(key, "main-pid")) {
2704 pid_t pid;
2705
2706 if (parse_pid(value, &pid) < 0)
2707 log_debug("Failed to parse main-pid value %s", value);
2708 else
2709 service_set_main_pid(s, (pid_t) pid);
2710 } else if (streq(key, "main-pid-known")) {
2711 int b;
2712
2713 if ((b = parse_boolean(value)) < 0)
2714 log_debug("Failed to parse main-pid-known value %s", value);
2715 else
2716 s->main_pid_known = b;
2717 } else if (streq(key, "status-text")) {
2718 char *t;
2719
2720 if ((t = strdup(value))) {
2721 free(s->status_text);
2722 s->status_text = t;
2723 }
2724
2725 } else if (streq(key, "control-command")) {
2726 ServiceExecCommand id;
2727
2728 if ((id = service_exec_command_from_string(value)) < 0)
2729 log_debug("Failed to parse exec-command value %s", value);
2730 else {
2731 s->control_command_id = id;
2732 s->control_command = s->exec_command[id];
2733 }
2734 } else if (streq(key, "socket-fd")) {
2735 int fd;
2736
2737 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2738 log_debug("Failed to parse socket-fd value %s", value);
2739 else {
2740
2741 if (s->socket_fd >= 0)
2742 close_nointr_nofail(s->socket_fd);
2743 s->socket_fd = fdset_remove(fds, fd);
2744 }
2745 } else if (streq(key, "main-exec-status-pid")) {
2746 pid_t pid;
2747
2748 if (parse_pid(value, &pid) < 0)
2749 log_debug("Failed to parse main-exec-status-pid value %s", value);
2750 else
2751 s->main_exec_status.pid = pid;
2752 } else if (streq(key, "main-exec-status-code")) {
2753 int i;
2754
2755 if (safe_atoi(value, &i) < 0)
2756 log_debug("Failed to parse main-exec-status-code value %s", value);
2757 else
2758 s->main_exec_status.code = i;
2759 } else if (streq(key, "main-exec-status-status")) {
2760 int i;
2761
2762 if (safe_atoi(value, &i) < 0)
2763 log_debug("Failed to parse main-exec-status-status value %s", value);
2764 else
2765 s->main_exec_status.status = i;
2766 } else if (streq(key, "main-exec-status-start"))
2767 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2768 else if (streq(key, "main-exec-status-exit"))
2769 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2770 else if (streq(key, "watchdog-timestamp"))
2771 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2772 else
2773 log_debug("Unknown serialization key '%s'", key);
2774
2775 return 0;
2776 }
2777
2778 static UnitActiveState service_active_state(Unit *u) {
2779 const UnitActiveState *table;
2780
2781 assert(u);
2782
2783 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2784
2785 return table[SERVICE(u)->state];
2786 }
2787
2788 static const char *service_sub_state_to_string(Unit *u) {
2789 assert(u);
2790
2791 return service_state_to_string(SERVICE(u)->state);
2792 }
2793
2794 static bool service_check_gc(Unit *u) {
2795 Service *s = SERVICE(u);
2796
2797 assert(s);
2798
2799 /* Never clean up services that still have a process around,
2800 * even if the service is formally dead. */
2801 if (cgroup_good(s) > 0 ||
2802 main_pid_good(s) > 0 ||
2803 control_pid_good(s) > 0)
2804 return true;
2805
2806 #ifdef HAVE_SYSV_COMPAT
2807 if (s->is_sysv)
2808 return true;
2809 #endif
2810
2811 return false;
2812 }
2813
2814 static bool service_check_snapshot(Unit *u) {
2815 Service *s = SERVICE(u);
2816
2817 assert(s);
2818
2819 return !s->got_socket_fd;
2820 }
2821
2822 static int service_retry_pid_file(Service *s) {
2823 int r;
2824
2825 assert(s->pid_file);
2826 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2827
2828 r = service_load_pid_file(s, false);
2829 if (r < 0)
2830 return r;
2831
2832 service_unwatch_pid_file(s);
2833
2834 service_enter_running(s, SERVICE_SUCCESS);
2835 return 0;
2836 }
2837
2838 static int service_watch_pid_file(Service *s) {
2839 int r;
2840
2841 log_debug("Setting watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
2842 r = path_spec_watch(s->pid_file_pathspec, UNIT(s));
2843 if (r < 0)
2844 goto fail;
2845
2846 /* the pidfile might have appeared just before we set the watch */
2847 service_retry_pid_file(s);
2848
2849 return 0;
2850 fail:
2851 log_error("Failed to set a watch for %s's PID file %s: %s",
2852 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2853 service_unwatch_pid_file(s);
2854 return r;
2855 }
2856
2857 static int service_demand_pid_file(Service *s) {
2858 PathSpec *ps;
2859
2860 assert(s->pid_file);
2861 assert(!s->pid_file_pathspec);
2862
2863 ps = new0(PathSpec, 1);
2864 if (!ps)
2865 return -ENOMEM;
2866
2867 ps->path = strdup(s->pid_file);
2868 if (!ps->path) {
2869 free(ps);
2870 return -ENOMEM;
2871 }
2872
2873 path_kill_slashes(ps->path);
2874
2875 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2876 * keep their PID file open all the time. */
2877 ps->type = PATH_MODIFIED;
2878 ps->inotify_fd = -1;
2879
2880 s->pid_file_pathspec = ps;
2881
2882 return service_watch_pid_file(s);
2883 }
2884
2885 static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
2886 Service *s = SERVICE(u);
2887
2888 assert(s);
2889 assert(fd >= 0);
2890 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2891 assert(s->pid_file_pathspec);
2892 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2893
2894 log_debug("inotify event for %s", u->id);
2895
2896 if (path_spec_fd_event(s->pid_file_pathspec, events) < 0)
2897 goto fail;
2898
2899 if (service_retry_pid_file(s) == 0)
2900 return;
2901
2902 if (service_watch_pid_file(s) < 0)
2903 goto fail;
2904
2905 return;
2906 fail:
2907 service_unwatch_pid_file(s);
2908 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2909 }
2910
2911 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2912 Service *s = SERVICE(u);
2913 ServiceResult f;
2914
2915 assert(s);
2916 assert(pid >= 0);
2917
2918 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2919 is_clean_exit_lsb(code, status, &s->success_status))
2920 f = SERVICE_SUCCESS;
2921 else if (code == CLD_EXITED)
2922 f = SERVICE_FAILURE_EXIT_CODE;
2923 else if (code == CLD_KILLED)
2924 f = SERVICE_FAILURE_SIGNAL;
2925 else if (code == CLD_DUMPED)
2926 f = SERVICE_FAILURE_CORE_DUMP;
2927 else
2928 assert_not_reached("Unknown code");
2929
2930 if (s->main_pid == pid) {
2931 /* Forking services may occasionally move to a new PID.
2932 * As long as they update the PID file before exiting the old
2933 * PID, they're fine. */
2934 if (service_load_pid_file(s, false) == 0)
2935 return;
2936
2937 s->main_pid = 0;
2938 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2939
2940 /* If this is not a forking service than the main
2941 * process got started and hence we copy the exit
2942 * status so that it is recorded both as main and as
2943 * control process exit status */
2944 if (s->main_command) {
2945 s->main_command->exec_status = s->main_exec_status;
2946
2947 if (s->main_command->ignore)
2948 f = SERVICE_SUCCESS;
2949 }
2950
2951 log_struct(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2952 "MESSAGE=%s: main process exited, code=%s, status=%i/%s",
2953 u->id, sigchld_code_to_string(code), status,
2954 strna(code == CLD_EXITED
2955 ? exit_status_to_string(status, EXIT_STATUS_FULL)
2956 : signal_to_string(status)),
2957 "UNIT=%s", u->id,
2958 "EXIT_CODE=%s", sigchld_code_to_string(code),
2959 "EXIT_STATUS=%i", status,
2960 NULL);
2961
2962 if (f != SERVICE_SUCCESS)
2963 s->result = f;
2964
2965 if (s->main_command &&
2966 s->main_command->command_next &&
2967 f == SERVICE_SUCCESS) {
2968
2969 /* There is another command to *
2970 * execute, so let's do that. */
2971
2972 log_debug("%s running next main command for state %s", u->id, service_state_to_string(s->state));
2973 service_run_next_main(s);
2974
2975 } else {
2976
2977 /* The service exited, so the service is officially
2978 * gone. */
2979 s->main_command = NULL;
2980
2981 switch (s->state) {
2982
2983 case SERVICE_START_POST:
2984 case SERVICE_RELOAD:
2985 case SERVICE_STOP:
2986 /* Need to wait until the operation is
2987 * done */
2988 break;
2989
2990 case SERVICE_START:
2991 if (s->type == SERVICE_ONESHOT) {
2992 /* This was our main goal, so let's go on */
2993 if (f == SERVICE_SUCCESS)
2994 service_enter_start_post(s);
2995 else
2996 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
2997 break;
2998 }
2999
3000 /* Fall through */
3001
3002 case SERVICE_RUNNING:
3003 service_enter_running(s, f);
3004 break;
3005
3006 case SERVICE_STOP_SIGTERM:
3007 case SERVICE_STOP_SIGKILL:
3008
3009 if (!control_pid_good(s))
3010 service_enter_stop_post(s, f);
3011
3012 /* If there is still a control process, wait for that first */
3013 break;
3014
3015 default:
3016 assert_not_reached("Uh, main process died at wrong time.");
3017 }
3018 }
3019
3020 } else if (s->control_pid == pid) {
3021
3022 s->control_pid = 0;
3023
3024 if (s->control_command) {
3025 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
3026
3027 if (s->control_command->ignore)
3028 f = SERVICE_SUCCESS;
3029 }
3030
3031 log_full(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
3032 "%s: control process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
3033
3034 if (f != SERVICE_SUCCESS)
3035 s->result = f;
3036
3037 /* Immediately get rid of the cgroup, so that the
3038 * kernel doesn't delay the cgroup empty messages for
3039 * the service cgroup any longer than necessary */
3040 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
3041
3042 if (s->control_command &&
3043 s->control_command->command_next &&
3044 f == SERVICE_SUCCESS) {
3045
3046 /* There is another command to *
3047 * execute, so let's do that. */
3048
3049 log_debug("%s running next control command for state %s", u->id, service_state_to_string(s->state));
3050 service_run_next_control(s);
3051
3052 } else {
3053 /* No further commands for this step, so let's
3054 * figure out what to do next */
3055
3056 s->control_command = NULL;
3057 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3058
3059 log_debug("%s got final SIGCHLD for state %s", u->id, service_state_to_string(s->state));
3060
3061 switch (s->state) {
3062
3063 case SERVICE_START_PRE:
3064 if (f == SERVICE_SUCCESS)
3065 service_enter_start(s);
3066 else
3067 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3068 break;
3069
3070 case SERVICE_START:
3071 if (s->type != SERVICE_FORKING)
3072 /* Maybe spurious event due to a reload that changed the type? */
3073 break;
3074
3075 if (f != SERVICE_SUCCESS) {
3076 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3077 break;
3078 }
3079
3080 if (s->pid_file) {
3081 bool has_start_post;
3082 int r;
3083
3084 /* Let's try to load the pid file here if we can.
3085 * The PID file might actually be created by a START_POST
3086 * script. In that case don't worry if the loading fails. */
3087
3088 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3089 r = service_load_pid_file(s, !has_start_post);
3090 if (!has_start_post && r < 0) {
3091 r = service_demand_pid_file(s);
3092 if (r < 0 || !cgroup_good(s))
3093 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3094 break;
3095 }
3096 } else
3097 service_search_main_pid(s);
3098
3099 service_enter_start_post(s);
3100 break;
3101
3102 case SERVICE_START_POST:
3103 if (f != SERVICE_SUCCESS) {
3104 service_enter_stop(s, f);
3105 break;
3106 }
3107
3108 if (s->pid_file) {
3109 int r;
3110
3111 r = service_load_pid_file(s, true);
3112 if (r < 0) {
3113 r = service_demand_pid_file(s);
3114 if (r < 0 || !cgroup_good(s))
3115 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3116 break;
3117 }
3118 } else
3119 service_search_main_pid(s);
3120
3121 service_enter_running(s, SERVICE_SUCCESS);
3122 break;
3123
3124 case SERVICE_RELOAD:
3125 if (f == SERVICE_SUCCESS) {
3126 service_load_pid_file(s, true);
3127 service_search_main_pid(s);
3128 }
3129
3130 s->reload_result = f;
3131 service_enter_running(s, SERVICE_SUCCESS);
3132 break;
3133
3134 case SERVICE_STOP:
3135 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3136 break;
3137
3138 case SERVICE_STOP_SIGTERM:
3139 case SERVICE_STOP_SIGKILL:
3140 if (main_pid_good(s) <= 0)
3141 service_enter_stop_post(s, f);
3142
3143 /* If there is still a service
3144 * process around, wait until
3145 * that one quit, too */
3146 break;
3147
3148 case SERVICE_STOP_POST:
3149 case SERVICE_FINAL_SIGTERM:
3150 case SERVICE_FINAL_SIGKILL:
3151 service_enter_dead(s, f, true);
3152 break;
3153
3154 default:
3155 assert_not_reached("Uh, control process died at wrong time.");
3156 }
3157 }
3158 }
3159
3160 /* Notify clients about changed exit status */
3161 unit_add_to_dbus_queue(u);
3162 }
3163
3164 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
3165 Service *s = SERVICE(u);
3166
3167 assert(s);
3168 assert(elapsed == 1);
3169
3170 if (w == &s->watchdog_watch) {
3171 service_handle_watchdog(s);
3172 return;
3173 }
3174
3175 assert(w == &s->timer_watch);
3176
3177 switch (s->state) {
3178
3179 case SERVICE_START_PRE:
3180 case SERVICE_START:
3181 log_warning("%s operation timed out. Terminating.", u->id);
3182 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3183 break;
3184
3185 case SERVICE_START_POST:
3186 log_warning("%s operation timed out. Stopping.", u->id);
3187 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3188 break;
3189
3190 case SERVICE_RELOAD:
3191 log_warning("%s operation timed out. Stopping.", u->id);
3192 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3193 service_enter_running(s, SERVICE_SUCCESS);
3194 break;
3195
3196 case SERVICE_STOP:
3197 log_warning("%s stopping timed out. Terminating.", u->id);
3198 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3199 break;
3200
3201 case SERVICE_STOP_SIGTERM:
3202 if (s->kill_context.send_sigkill) {
3203 log_warning("%s stopping timed out. Killing.", u->id);
3204 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3205 } else {
3206 log_warning("%s stopping timed out. Skipping SIGKILL.", u->id);
3207 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3208 }
3209
3210 break;
3211
3212 case SERVICE_STOP_SIGKILL:
3213 /* Uh, we sent a SIGKILL and it is still not gone?
3214 * Must be something we cannot kill, so let's just be
3215 * weirded out and continue */
3216
3217 log_warning("%s still around after SIGKILL. Ignoring.", u->id);
3218 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3219 break;
3220
3221 case SERVICE_STOP_POST:
3222 log_warning("%s stopping timed out (2). Terminating.", u->id);
3223 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3224 break;
3225
3226 case SERVICE_FINAL_SIGTERM:
3227 if (s->kill_context.send_sigkill) {
3228 log_warning("%s stopping timed out (2). Killing.", u->id);
3229 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3230 } else {
3231 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->id);
3232 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3233 }
3234
3235 break;
3236
3237 case SERVICE_FINAL_SIGKILL:
3238 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->id);
3239 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3240 break;
3241
3242 case SERVICE_AUTO_RESTART:
3243 log_info("%s holdoff time over, scheduling restart.", u->id);
3244 service_enter_restart(s);
3245 break;
3246
3247 default:
3248 assert_not_reached("Timeout at wrong time.");
3249 }
3250 }
3251
3252 static void service_cgroup_notify_event(Unit *u) {
3253 Service *s = SERVICE(u);
3254
3255 assert(u);
3256
3257 log_debug("%s: cgroup is empty", u->id);
3258
3259 switch (s->state) {
3260
3261 /* Waiting for SIGCHLD is usually more interesting,
3262 * because it includes return codes/signals. Which is
3263 * why we ignore the cgroup events for most cases,
3264 * except when we don't know pid which to expect the
3265 * SIGCHLD for. */
3266
3267 case SERVICE_START:
3268 case SERVICE_START_POST:
3269 /* If we were hoping for the daemon to write its PID file,
3270 * we can give up now. */
3271 if (s->pid_file_pathspec) {
3272 log_warning("%s never wrote its PID file. Failing.", UNIT(s)->id);
3273 service_unwatch_pid_file(s);
3274 if (s->state == SERVICE_START)
3275 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3276 else
3277 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3278 }
3279 break;
3280
3281 case SERVICE_RUNNING:
3282 /* service_enter_running() will figure out what to do */
3283 service_enter_running(s, SERVICE_SUCCESS);
3284 break;
3285
3286 case SERVICE_STOP_SIGTERM:
3287 case SERVICE_STOP_SIGKILL:
3288
3289 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3290 service_enter_stop_post(s, SERVICE_SUCCESS);
3291
3292 break;
3293
3294 case SERVICE_FINAL_SIGTERM:
3295 case SERVICE_FINAL_SIGKILL:
3296 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3297 service_enter_dead(s, SERVICE_SUCCESS, true);
3298
3299 break;
3300
3301 default:
3302 ;
3303 }
3304 }
3305
3306 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3307 Service *s = SERVICE(u);
3308 const char *e;
3309
3310 assert(u);
3311
3312 if (s->notify_access == NOTIFY_NONE) {
3313 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
3314 u->id, (unsigned long) pid);
3315 return;
3316 }
3317
3318 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3319 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
3320 u->id, (unsigned long) pid, (unsigned long) s->main_pid);
3321 return;
3322 }
3323
3324 log_debug("%s: Got message", u->id);
3325
3326 /* Interpret MAINPID= */
3327 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3328 (s->state == SERVICE_START ||
3329 s->state == SERVICE_START_POST ||
3330 s->state == SERVICE_RUNNING ||
3331 s->state == SERVICE_RELOAD)) {
3332
3333 if (parse_pid(e + 8, &pid) < 0)
3334 log_warning("Failed to parse notification message %s", e);
3335 else {
3336 log_debug("%s: got %s", u->id, e);
3337 service_set_main_pid(s, pid);
3338 }
3339 }
3340
3341 /* Interpret READY= */
3342 if (s->type == SERVICE_NOTIFY &&
3343 s->state == SERVICE_START &&
3344 strv_find(tags, "READY=1")) {
3345 log_debug("%s: got READY=1", u->id);
3346
3347 service_enter_start_post(s);
3348 }
3349
3350 /* Interpret STATUS= */
3351 e = strv_find_prefix(tags, "STATUS=");
3352 if (e) {
3353 char *t;
3354
3355 if (e[7]) {
3356
3357 if (!utf8_is_valid(e+7)) {
3358 log_warning("Status message in notification is not UTF-8 clean.");
3359 return;
3360 }
3361
3362 t = strdup(e+7);
3363 if (!t) {
3364 log_error("Failed to allocate string.");
3365 return;
3366 }
3367
3368 log_debug("%s: got %s", u->id, e);
3369
3370 free(s->status_text);
3371 s->status_text = t;
3372 } else {
3373 free(s->status_text);
3374 s->status_text = NULL;
3375 }
3376
3377 }
3378 if (strv_find(tags, "WATCHDOG=1")) {
3379 log_debug("%s: got WATCHDOG=1", u->id);
3380 service_reset_watchdog(s);
3381 }
3382
3383 /* Notify clients about changed status or main pid */
3384 unit_add_to_dbus_queue(u);
3385 }
3386
3387 #ifdef HAVE_SYSV_COMPAT
3388
3389 #ifdef TARGET_SUSE
3390 static void sysv_facility_in_insserv_conf(Manager *mgr) {
3391 FILE *f=NULL;
3392 int r;
3393
3394 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3395 r = errno == ENOENT ? 0 : -errno;
3396 goto finish;
3397 }
3398
3399 while (!feof(f)) {
3400 char l[LINE_MAX], *t;
3401 char **parsed = NULL;
3402
3403 if (!fgets(l, sizeof(l), f)) {
3404 if (feof(f))
3405 break;
3406
3407 r = -errno;
3408 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3409 goto finish;
3410 }
3411
3412 t = strstrip(l);
3413 if (*t != '$' && *t != '<')
3414 continue;
3415
3416 parsed = strv_split(t,WHITESPACE);
3417 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3418 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3419 char *facility;
3420 Unit *u;
3421 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3422 continue;
3423 if ((u = manager_get_unit(mgr, facility)) && (u->type == UNIT_TARGET)) {
3424 UnitDependency e;
3425 char *dep = NULL, *name, **j;
3426
3427 STRV_FOREACH (j, parsed+1) {
3428 if (*j[0]=='+') {
3429 e = UNIT_WANTS;
3430 name = *j+1;
3431 }
3432 else {
3433 e = UNIT_REQUIRES;
3434 name = *j;
3435 }
3436 if (sysv_translate_facility(name, NULL, &dep) < 0)
3437 continue;
3438
3439 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3440 free(dep);
3441 }
3442 }
3443 free(facility);
3444 }
3445 strv_free(parsed);
3446 }
3447 finish:
3448 if (f)
3449 fclose(f);
3450
3451 }
3452 #endif
3453
3454 static int service_enumerate(Manager *m) {
3455 char **p;
3456 unsigned i;
3457 DIR *d = NULL;
3458 char *path = NULL, *fpath = NULL, *name = NULL;
3459 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3460 Unit *service;
3461 Iterator j;
3462 int r;
3463
3464 assert(m);
3465
3466 if (m->running_as != SYSTEMD_SYSTEM)
3467 return 0;
3468
3469 zero(runlevel_services);
3470
3471 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3472 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3473 struct dirent *de;
3474
3475 free(path);
3476 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3477 if (!path) {
3478 r = -ENOMEM;
3479 goto finish;
3480 }
3481
3482 if (d)
3483 closedir(d);
3484
3485 if (!(d = opendir(path))) {
3486 if (errno != ENOENT)
3487 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3488
3489 continue;
3490 }
3491
3492 while ((de = readdir(d))) {
3493 int a, b;
3494
3495 if (ignore_file(de->d_name))
3496 continue;
3497
3498 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3499 continue;
3500
3501 if (strlen(de->d_name) < 4)
3502 continue;
3503
3504 a = undecchar(de->d_name[1]);
3505 b = undecchar(de->d_name[2]);
3506
3507 if (a < 0 || b < 0)
3508 continue;
3509
3510 free(fpath);
3511 fpath = strjoin(path, "/", de->d_name, NULL);
3512 if (!fpath) {
3513 r = -ENOMEM;
3514 goto finish;
3515 }
3516
3517 if (access(fpath, X_OK) < 0) {
3518
3519 if (errno != ENOENT)
3520 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3521
3522 continue;
3523 }
3524
3525 free(name);
3526 if (!(name = sysv_translate_name(de->d_name + 3))) {
3527 r = -ENOMEM;
3528 goto finish;
3529 }
3530
3531 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3532 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3533 continue;
3534 }
3535
3536 if (de->d_name[0] == 'S') {
3537
3538 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3539 SERVICE(service)->sysv_start_priority_from_rcnd =
3540 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3541
3542 SERVICE(service)->sysv_enabled = true;
3543 }
3544
3545 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3546 goto finish;
3547
3548 if ((r = set_put(runlevel_services[i], service)) < 0)
3549 goto finish;
3550
3551 } else if (de->d_name[0] == 'K' &&
3552 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3553 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3554
3555 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3556 goto finish;
3557
3558 if ((r = set_put(shutdown_services, service)) < 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 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3580 goto finish;
3581 }
3582
3583 /* We honour K links only for halt/reboot. For the normal
3584 * runlevels we assume the stop jobs will be implicitly added
3585 * by the core logic. Also, we don't really distinguish here
3586 * between the runlevels 0 and 6 and just add them to the
3587 * special shutdown target. On SUSE the boot.d/ runlevel is
3588 * also used for shutdown, so we add links for that too to the
3589 * shutdown target.*/
3590 SET_FOREACH(service, shutdown_services, j) {
3591 service = unit_follow_merge(service);
3592
3593 if (service->fragment_path)
3594 continue;
3595
3596 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3597 goto finish;
3598 }
3599
3600 r = 0;
3601
3602 #ifdef TARGET_SUSE
3603 sysv_facility_in_insserv_conf (m);
3604 #endif
3605
3606 finish:
3607 free(path);
3608 free(fpath);
3609 free(name);
3610
3611 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3612 set_free(runlevel_services[i]);
3613 set_free(shutdown_services);
3614
3615 if (d)
3616 closedir(d);
3617
3618 return r;
3619 }
3620 #endif
3621
3622 static void service_bus_name_owner_change(
3623 Unit *u,
3624 const char *name,
3625 const char *old_owner,
3626 const char *new_owner) {
3627
3628 Service *s = SERVICE(u);
3629
3630 assert(s);
3631 assert(name);
3632
3633 assert(streq(s->bus_name, name));
3634 assert(old_owner || new_owner);
3635
3636 if (old_owner && new_owner)
3637 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->id, name, old_owner, new_owner);
3638 else if (old_owner)
3639 log_debug("%s's D-Bus name %s no longer registered by %s", u->id, name, old_owner);
3640 else
3641 log_debug("%s's D-Bus name %s now registered by %s", u->id, name, new_owner);
3642
3643 s->bus_name_good = !!new_owner;
3644
3645 if (s->type == SERVICE_DBUS) {
3646
3647 /* service_enter_running() will figure out what to
3648 * do */
3649 if (s->state == SERVICE_RUNNING)
3650 service_enter_running(s, SERVICE_SUCCESS);
3651 else if (s->state == SERVICE_START && new_owner)
3652 service_enter_start_post(s);
3653
3654 } else if (new_owner &&
3655 s->main_pid <= 0 &&
3656 (s->state == SERVICE_START ||
3657 s->state == SERVICE_START_POST ||
3658 s->state == SERVICE_RUNNING ||
3659 s->state == SERVICE_RELOAD)) {
3660
3661 /* Try to acquire PID from bus service */
3662 log_debug("Trying to acquire PID from D-Bus name...");
3663
3664 bus_query_pid(u->manager, name);
3665 }
3666 }
3667
3668 static 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("%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3679
3680 if (s->main_pid <= 0 &&
3681 (s->state == SERVICE_START ||
3682 s->state == SERVICE_START_POST ||
3683 s->state == SERVICE_RUNNING ||
3684 s->state == SERVICE_RELOAD))
3685 service_set_main_pid(s, pid);
3686 }
3687
3688 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3689
3690 assert(s);
3691 assert(fd >= 0);
3692
3693 /* This is called by the socket code when instantiating a new
3694 * service for a stream socket and the socket needs to be
3695 * configured. */
3696
3697 if (UNIT(s)->load_state != UNIT_LOADED)
3698 return -EINVAL;
3699
3700 if (s->socket_fd >= 0)
3701 return -EBUSY;
3702
3703 if (s->state != SERVICE_DEAD)
3704 return -EAGAIN;
3705
3706 s->socket_fd = fd;
3707 s->got_socket_fd = true;
3708
3709 unit_ref_set(&s->accept_socket, UNIT(sock));
3710
3711 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3712 }
3713
3714 static void service_reset_failed(Unit *u) {
3715 Service *s = SERVICE(u);
3716
3717 assert(s);
3718
3719 if (s->state == SERVICE_FAILED)
3720 service_set_state(s, SERVICE_DEAD);
3721
3722 s->result = SERVICE_SUCCESS;
3723 s->reload_result = SERVICE_SUCCESS;
3724
3725 RATELIMIT_RESET(s->start_limit);
3726 }
3727
3728 static int service_kill(Unit *u, KillWho who, int signo, DBusError *error) {
3729 Service *s = SERVICE(u);
3730 int r = 0;
3731 Set *pid_set = NULL;
3732
3733 assert(s);
3734
3735 if (s->main_pid <= 0 && who == KILL_MAIN) {
3736 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3737 return -ESRCH;
3738 }
3739
3740 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3741 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3742 return -ESRCH;
3743 }
3744
3745 if (who == KILL_CONTROL || who == KILL_ALL)
3746 if (s->control_pid > 0)
3747 if (kill(s->control_pid, signo) < 0)
3748 r = -errno;
3749
3750 if (who == KILL_MAIN || who == KILL_ALL)
3751 if (s->main_pid > 0)
3752 if (kill(s->main_pid, signo) < 0)
3753 r = -errno;
3754
3755 if (who == KILL_ALL) {
3756 int q;
3757
3758 pid_set = set_new(trivial_hash_func, trivial_compare_func);
3759 if (!pid_set)
3760 return -ENOMEM;
3761
3762 /* Exclude the control/main pid from being killed via the cgroup */
3763 if (s->control_pid > 0) {
3764 q = set_put(pid_set, LONG_TO_PTR(s->control_pid));
3765 if (q < 0) {
3766 r = q;
3767 goto finish;
3768 }
3769 }
3770
3771 if (s->main_pid > 0) {
3772 q = set_put(pid_set, LONG_TO_PTR(s->main_pid));
3773 if (q < 0) {
3774 r = q;
3775 goto finish;
3776 }
3777 }
3778
3779 q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, false, pid_set, NULL);
3780 if (q < 0 && q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3781 r = q;
3782 }
3783
3784 finish:
3785 if (pid_set)
3786 set_free(pid_set);
3787
3788 return r;
3789 }
3790
3791 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3792 [SERVICE_DEAD] = "dead",
3793 [SERVICE_START_PRE] = "start-pre",
3794 [SERVICE_START] = "start",
3795 [SERVICE_START_POST] = "start-post",
3796 [SERVICE_RUNNING] = "running",
3797 [SERVICE_EXITED] = "exited",
3798 [SERVICE_RELOAD] = "reload",
3799 [SERVICE_STOP] = "stop",
3800 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3801 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3802 [SERVICE_STOP_POST] = "stop-post",
3803 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3804 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3805 [SERVICE_FAILED] = "failed",
3806 [SERVICE_AUTO_RESTART] = "auto-restart",
3807 };
3808
3809 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3810
3811 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3812 [SERVICE_RESTART_NO] = "no",
3813 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3814 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3815 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3816 [SERVICE_RESTART_ALWAYS] = "always"
3817 };
3818
3819 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3820
3821 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3822 [SERVICE_SIMPLE] = "simple",
3823 [SERVICE_FORKING] = "forking",
3824 [SERVICE_ONESHOT] = "oneshot",
3825 [SERVICE_DBUS] = "dbus",
3826 [SERVICE_NOTIFY] = "notify",
3827 [SERVICE_IDLE] = "idle"
3828 };
3829
3830 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3831
3832 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3833 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3834 [SERVICE_EXEC_START] = "ExecStart",
3835 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3836 [SERVICE_EXEC_RELOAD] = "ExecReload",
3837 [SERVICE_EXEC_STOP] = "ExecStop",
3838 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3839 };
3840
3841 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3842
3843 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3844 [NOTIFY_NONE] = "none",
3845 [NOTIFY_MAIN] = "main",
3846 [NOTIFY_ALL] = "all"
3847 };
3848
3849 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3850
3851 static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3852 [SERVICE_SUCCESS] = "success",
3853 [SERVICE_FAILURE_RESOURCES] = "resources",
3854 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3855 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3856 [SERVICE_FAILURE_SIGNAL] = "signal",
3857 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3858 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
3859 [SERVICE_FAILURE_START_LIMIT] = "start-limit"
3860 };
3861
3862 DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3863
3864 static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3865 [SERVICE_START_LIMIT_NONE] = "none",
3866 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3867 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3868 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3869 };
3870 DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3871
3872 const UnitVTable service_vtable = {
3873 .object_size = sizeof(Service),
3874 .exec_context_offset = offsetof(Service, exec_context),
3875
3876 .sections =
3877 "Unit\0"
3878 "Service\0"
3879 "Install\0",
3880
3881 .init = service_init,
3882 .done = service_done,
3883 .load = service_load,
3884
3885 .coldplug = service_coldplug,
3886
3887 .dump = service_dump,
3888
3889 .start = service_start,
3890 .stop = service_stop,
3891 .reload = service_reload,
3892
3893 .can_reload = service_can_reload,
3894
3895 .kill = service_kill,
3896
3897 .serialize = service_serialize,
3898 .deserialize_item = service_deserialize_item,
3899
3900 .active_state = service_active_state,
3901 .sub_state_to_string = service_sub_state_to_string,
3902
3903 .check_gc = service_check_gc,
3904 .check_snapshot = service_check_snapshot,
3905
3906 .sigchld_event = service_sigchld_event,
3907 .timer_event = service_timer_event,
3908 .fd_event = service_fd_event,
3909
3910 .reset_failed = service_reset_failed,
3911
3912 .cgroup_notify_empty = service_cgroup_notify_event,
3913 .notify_message = service_notify_message,
3914
3915 .bus_name_owner_change = service_bus_name_owner_change,
3916 .bus_query_pid_done = service_bus_query_pid_done,
3917
3918 .bus_interface = "org.freedesktop.systemd1.Service",
3919 .bus_message_handler = bus_service_message_handler,
3920 .bus_invalidating_properties = bus_service_invalidating_properties,
3921
3922 #ifdef HAVE_SYSV_COMPAT
3923 .enumerate = service_enumerate,
3924 #endif
3925 .status_message_formats = {
3926 .starting_stopping = {
3927 [0] = "Starting %s...",
3928 [1] = "Stopping %s...",
3929 },
3930 .finished_start_job = {
3931 [JOB_DONE] = "Started %s.",
3932 [JOB_FAILED] = "Failed to start %s.",
3933 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3934 [JOB_TIMEOUT] = "Timed out starting %s.",
3935 },
3936 .finished_stop_job = {
3937 [JOB_DONE] = "Stopped %s.",
3938 [JOB_FAILED] = "Stopped (with error) %s.",
3939 [JOB_TIMEOUT] = "Timed out stopping %s.",
3940 },
3941 },
3942 };
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