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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 "dbus-service.h"
37#include "special.h"
38#include "bus-errors.h"
39#include "exit-status.h"
40#include "def.h"
41#include "path-util.h"
42#include "util.h"
43#include "utf8.h"
44
45#ifdef HAVE_SYSV_COMPAT
46
47#define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE)
48
49typedef enum RunlevelType {
50 RUNLEVEL_UP,
51 RUNLEVEL_DOWN,
52 RUNLEVEL_SYSINIT
53} RunlevelType;
54
55static const struct {
56 const char *path;
57 const char *target;
58 const RunlevelType type;
59} rcnd_table[] = {
60 /* Standard SysV runlevels for start-up */
61 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
62 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
63 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
64 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
65 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
66
67#ifdef TARGET_SUSE
68 /* SUSE style boot.d */
69 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
70#endif
71
72#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
73 /* Debian style rcS.d */
74 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
75#endif
76
77 /* Standard SysV runlevels for shutdown */
78 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
79 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
80
81 /* Note that the order here matters, as we read the
82 directories in this order, and we want to make sure that
83 sysv_start_priority is known when we first load the
84 unit. And that value we only know from S links. Hence
85 UP/SYSINIT must be read before DOWN */
86};
87
88#define RUNLEVELS_UP "12345"
89/* #define RUNLEVELS_DOWN "06" */
90#define RUNLEVELS_BOOT "bBsS"
91#endif
92
93static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
94 [SERVICE_DEAD] = UNIT_INACTIVE,
95 [SERVICE_START_PRE] = UNIT_ACTIVATING,
96 [SERVICE_START] = UNIT_ACTIVATING,
97 [SERVICE_START_POST] = UNIT_ACTIVATING,
98 [SERVICE_RUNNING] = UNIT_ACTIVE,
99 [SERVICE_EXITED] = UNIT_ACTIVE,
100 [SERVICE_RELOAD] = UNIT_RELOADING,
101 [SERVICE_STOP] = UNIT_DEACTIVATING,
102 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
103 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
104 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
105 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
106 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
107 [SERVICE_FAILED] = UNIT_FAILED,
108 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
109};
110
111/* For Type=idle we never want to delay any other jobs, hence we
112 * consider idle jobs active as soon as we start working on them */
113static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = {
114 [SERVICE_DEAD] = UNIT_INACTIVE,
115 [SERVICE_START_PRE] = UNIT_ACTIVE,
116 [SERVICE_START] = UNIT_ACTIVE,
117 [SERVICE_START_POST] = UNIT_ACTIVE,
118 [SERVICE_RUNNING] = UNIT_ACTIVE,
119 [SERVICE_EXITED] = UNIT_ACTIVE,
120 [SERVICE_RELOAD] = UNIT_RELOADING,
121 [SERVICE_STOP] = UNIT_DEACTIVATING,
122 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
123 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
124 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
125 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
126 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
127 [SERVICE_FAILED] = UNIT_FAILED,
128 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
129};
130
131static void service_init(Unit *u) {
132 Service *s = SERVICE(u);
133 int i;
134
135 assert(u);
136 assert(u->load_state == UNIT_STUB);
137
138 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
139 s->restart_usec = DEFAULT_RESTART_USEC;
140 s->type = _SERVICE_TYPE_INVALID;
141
142 s->watchdog_watch.type = WATCH_INVALID;
143
144 s->timer_watch.type = WATCH_INVALID;
145#ifdef HAVE_SYSV_COMPAT
146 s->sysv_start_priority = -1;
147 s->sysv_start_priority_from_rcnd = -1;
148#endif
149 s->socket_fd = -1;
150 s->guess_main_pid = true;
151
152 exec_context_init(&s->exec_context);
153 for (i = 0; i < RLIMIT_NLIMITS; i++)
154 if (UNIT(s)->manager->rlimit[i])
155 s->exec_context.rlimit[i] = newdup(struct rlimit, UNIT(s)->manager->rlimit[i], 1);
156
157 RATELIMIT_INIT(s->start_limit, 10*USEC_PER_SEC, 5);
158
159 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
160}
161
162static void service_unwatch_control_pid(Service *s) {
163 assert(s);
164
165 if (s->control_pid <= 0)
166 return;
167
168 unit_unwatch_pid(UNIT(s), s->control_pid);
169 s->control_pid = 0;
170}
171
172static void service_unwatch_main_pid(Service *s) {
173 assert(s);
174
175 if (s->main_pid <= 0)
176 return;
177
178 unit_unwatch_pid(UNIT(s), s->main_pid);
179 s->main_pid = 0;
180}
181
182static void service_unwatch_pid_file(Service *s) {
183 if (!s->pid_file_pathspec)
184 return;
185
186 log_debug("Stopping watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
187 path_spec_unwatch(s->pid_file_pathspec, UNIT(s));
188 path_spec_done(s->pid_file_pathspec);
189 free(s->pid_file_pathspec);
190 s->pid_file_pathspec = NULL;
191}
192
193static int service_set_main_pid(Service *s, pid_t pid) {
194 pid_t ppid;
195
196 assert(s);
197
198 if (pid <= 1)
199 return -EINVAL;
200
201 if (pid == getpid())
202 return -EINVAL;
203
204 s->main_pid = pid;
205 s->main_pid_known = true;
206
207 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
208 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
209 UNIT(s)->id, (unsigned long) pid);
210
211 s->main_pid_alien = true;
212 } else
213 s->main_pid_alien = false;
214
215 exec_status_start(&s->main_exec_status, pid);
216
217 return 0;
218}
219
220static void service_close_socket_fd(Service *s) {
221 assert(s);
222
223 if (s->socket_fd < 0)
224 return;
225
226 close_nointr_nofail(s->socket_fd);
227 s->socket_fd = -1;
228}
229
230static void service_connection_unref(Service *s) {
231 assert(s);
232
233 if (!UNIT_DEREF(s->accept_socket))
234 return;
235
236 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
237 unit_ref_unset(&s->accept_socket);
238}
239
240static void service_stop_watchdog(Service *s) {
241 assert(s);
242
243 unit_unwatch_timer(UNIT(s), &s->watchdog_watch);
244 s->watchdog_timestamp.realtime = 0;
245 s->watchdog_timestamp.monotonic = 0;
246}
247
248static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart);
249
250static void service_handle_watchdog(Service *s) {
251 usec_t offset;
252 int r;
253
254 assert(s);
255
256 if (s->watchdog_usec == 0)
257 return;
258
259 offset = now(CLOCK_MONOTONIC) - s->watchdog_timestamp.monotonic;
260 if (offset >= s->watchdog_usec) {
261 log_error("%s watchdog timeout!", UNIT(s)->id);
262 service_enter_dead(s, SERVICE_FAILURE_WATCHDOG, true);
263 return;
264 }
265
266 r = unit_watch_timer(UNIT(s), s->watchdog_usec - offset, &s->watchdog_watch);
267 if (r < 0)
268 log_warning("%s failed to install watchdog timer: %s", UNIT(s)->id, strerror(-r));
269}
270
271static void service_reset_watchdog(Service *s) {
272 assert(s);
273
274 dual_timestamp_get(&s->watchdog_timestamp);
275 service_handle_watchdog(s);
276}
277
278static void service_done(Unit *u) {
279 Service *s = SERVICE(u);
280
281 assert(s);
282
283 free(s->pid_file);
284 s->pid_file = NULL;
285
286#ifdef HAVE_SYSV_COMPAT
287 free(s->sysv_runlevels);
288 s->sysv_runlevels = NULL;
289#endif
290
291 free(s->status_text);
292 s->status_text = NULL;
293
294 exec_context_done(&s->exec_context);
295 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
296 s->control_command = NULL;
297 s->main_command = NULL;
298
299 /* This will leak a process, but at least no memory or any of
300 * our resources */
301 service_unwatch_main_pid(s);
302 service_unwatch_control_pid(s);
303 service_unwatch_pid_file(s);
304
305 if (s->bus_name) {
306 unit_unwatch_bus_name(u, s->bus_name);
307 free(s->bus_name);
308 s->bus_name = NULL;
309 }
310
311 service_close_socket_fd(s);
312 service_connection_unref(s);
313
314 unit_ref_unset(&s->accept_socket);
315
316 service_stop_watchdog(s);
317
318 unit_unwatch_timer(u, &s->timer_watch);
319}
320
321#ifdef HAVE_SYSV_COMPAT
322static char *sysv_translate_name(const char *name) {
323 char *r;
324
325 if (!(r = new(char, strlen(name) + sizeof(".service"))))
326 return NULL;
327
328#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
329 if (endswith(name, ".sh"))
330 /* Drop Debian-style .sh suffix */
331 strcpy(stpcpy(r, name) - 3, ".service");
332#endif
333#ifdef TARGET_SUSE
334 if (startswith(name, "boot."))
335 /* Drop SuSE-style boot. prefix */
336 strcpy(stpcpy(r, name + 5), ".service");
337#endif
338#ifdef TARGET_FRUGALWARE
339 if (startswith(name, "rc."))
340 /* Drop Frugalware-style rc. prefix */
341 strcpy(stpcpy(r, name + 3), ".service");
342#endif
343 else
344 /* Normal init scripts */
345 strcpy(stpcpy(r, name), ".service");
346
347 return r;
348}
349
350static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
351
352 /* We silently ignore the $ prefix here. According to the LSB
353 * spec it simply indicates whether something is a
354 * standardized name or a distribution-specific one. Since we
355 * just follow what already exists and do not introduce new
356 * uses or names we don't care who introduced a new name. */
357
358 static const char * const table[] = {
359 /* LSB defined facilities */
360 "local_fs", SPECIAL_LOCAL_FS_TARGET,
361#if defined(TARGET_MANDRIVA) || defined(TARGET_MAGEIA)
362#else
363 /* Due to unfortunate name selection in Mandriva,
364 * $network is provided by network-up which is ordered
365 * after network which actually starts interfaces.
366 * To break the loop, just ignore it */
367 "network", SPECIAL_NETWORK_TARGET,
368#endif
369 "named", SPECIAL_NSS_LOOKUP_TARGET,
370 "portmap", SPECIAL_RPCBIND_TARGET,
371 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
372 "syslog", SPECIAL_SYSLOG_TARGET,
373 "time", SPECIAL_TIME_SYNC_TARGET,
374
375 /* common extensions */
376 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
377 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
378 "null", NULL,
379
380#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
381 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
382#endif
383
384#ifdef TARGET_FEDORA
385 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
386 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
387 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
388#endif
389
390#ifdef TARGET_SUSE
391 "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
392#endif
393 };
394
395 unsigned i;
396 char *r;
397 const char *n;
398
399 assert(name);
400 assert(_r);
401
402 n = *name == '$' ? name + 1 : name;
403
404 for (i = 0; i < ELEMENTSOF(table); i += 2) {
405
406 if (!streq(table[i], n))
407 continue;
408
409 if (!table[i+1])
410 return 0;
411
412 if (!(r = strdup(table[i+1])))
413 return -ENOMEM;
414
415 goto finish;
416 }
417
418 /* If we don't know this name, fallback heuristics to figure
419 * out whether something is a target or a service alias. */
420
421 if (*name == '$') {
422 if (!unit_prefix_is_valid(n))
423 return -EINVAL;
424
425 /* Facilities starting with $ are most likely targets */
426 r = unit_name_build(n, NULL, ".target");
427 } else if (filename && streq(name, filename))
428 /* Names equaling the file name of the services are redundant */
429 return 0;
430 else
431 /* Everything else we assume to be normal service names */
432 r = sysv_translate_name(n);
433
434 if (!r)
435 return -ENOMEM;
436
437finish:
438 *_r = r;
439
440 return 1;
441}
442
443static int sysv_fix_order(Service *s) {
444 Unit *other;
445 int r;
446
447 assert(s);
448
449 if (s->sysv_start_priority < 0)
450 return 0;
451
452 /* For each pair of services where at least one lacks a LSB
453 * header, we use the start priority value to order things. */
454
455 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
456 Service *t;
457 UnitDependency d;
458 bool special_s, special_t;
459
460 t = SERVICE(other);
461
462 if (s == t)
463 continue;
464
465 if (UNIT(t)->load_state != UNIT_LOADED)
466 continue;
467
468 if (t->sysv_start_priority < 0)
469 continue;
470
471 /* If both units have modern headers we don't care
472 * about the priorities */
473 if ((UNIT(s)->fragment_path || s->sysv_has_lsb) &&
474 (UNIT(t)->fragment_path || t->sysv_has_lsb))
475 continue;
476
477 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
478 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
479
480 if (special_t && !special_s)
481 d = UNIT_AFTER;
482 else if (special_s && !special_t)
483 d = UNIT_BEFORE;
484 else if (t->sysv_start_priority < s->sysv_start_priority)
485 d = UNIT_AFTER;
486 else if (t->sysv_start_priority > s->sysv_start_priority)
487 d = UNIT_BEFORE;
488 else
489 continue;
490
491 /* FIXME: Maybe we should compare the name here lexicographically? */
492
493 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
494 return r;
495 }
496
497 return 0;
498}
499
500static ExecCommand *exec_command_new(const char *path, const char *arg1) {
501 ExecCommand *c;
502
503 if (!(c = new0(ExecCommand, 1)))
504 return NULL;
505
506 if (!(c->path = strdup(path))) {
507 free(c);
508 return NULL;
509 }
510
511 if (!(c->argv = strv_new(path, arg1, NULL))) {
512 free(c->path);
513 free(c);
514 return NULL;
515 }
516
517 return c;
518}
519
520static int sysv_exec_commands(Service *s) {
521 ExecCommand *c;
522
523 assert(s);
524 assert(s->is_sysv);
525 assert(UNIT(s)->source_path);
526
527 c = exec_command_new(UNIT(s)->source_path, "start");
528 if (!c)
529 return -ENOMEM;
530 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
531
532 c = exec_command_new(UNIT(s)->source_path, "stop");
533 if (!c)
534 return -ENOMEM;
535 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
536
537 c = exec_command_new(UNIT(s)->source_path, "reload");
538 if (!c)
539 return -ENOMEM;
540 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
541
542 return 0;
543}
544
545static int service_load_sysv_path(Service *s, const char *path) {
546 FILE *f;
547 Unit *u;
548 unsigned line = 0;
549 int r;
550 enum {
551 NORMAL,
552 DESCRIPTION,
553 LSB,
554 LSB_DESCRIPTION
555 } state = NORMAL;
556 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
557 struct stat st;
558
559 assert(s);
560 assert(path);
561
562 u = UNIT(s);
563
564 f = fopen(path, "re");
565 if (!f) {
566 r = errno == ENOENT ? 0 : -errno;
567 goto finish;
568 }
569
570 zero(st);
571 if (fstat(fileno(f), &st) < 0) {
572 r = -errno;
573 goto finish;
574 }
575
576 free(u->source_path);
577 u->source_path = strdup(path);
578 if (!u->source_path) {
579 r = -ENOMEM;
580 goto finish;
581 }
582 u->source_mtime = timespec_load(&st.st_mtim);
583
584 if (null_or_empty(&st)) {
585 u->load_state = UNIT_MASKED;
586 r = 0;
587 goto finish;
588 }
589
590 s->is_sysv = true;
591
592 while (!feof(f)) {
593 char l[LINE_MAX], *t;
594
595 if (!fgets(l, sizeof(l), f)) {
596 if (feof(f))
597 break;
598
599 r = -errno;
600 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
601 goto finish;
602 }
603
604 line++;
605
606 t = strstrip(l);
607 if (*t != '#')
608 continue;
609
610 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
611 state = LSB;
612 s->sysv_has_lsb = true;
613 continue;
614 }
615
616 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
617 state = NORMAL;
618 continue;
619 }
620
621 t++;
622 t += strspn(t, WHITESPACE);
623
624 if (state == NORMAL) {
625
626 /* Try to parse Red Hat style chkconfig headers */
627
628 if (startswith_no_case(t, "chkconfig:")) {
629 int start_priority;
630 char runlevels[16], *k;
631
632 state = NORMAL;
633
634 if (sscanf(t+10, "%15s %i %*i",
635 runlevels,
636 &start_priority) != 2) {
637
638 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
639 continue;
640 }
641
642 /* A start priority gathered from the
643 * symlink farms is preferred over the
644 * data from the LSB header. */
645 if (start_priority < 0 || start_priority > 99)
646 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
647 else
648 s->sysv_start_priority = start_priority;
649
650 char_array_0(runlevels);
651 k = delete_chars(runlevels, WHITESPACE "-");
652
653 if (k[0]) {
654 char *d;
655
656 if (!(d = strdup(k))) {
657 r = -ENOMEM;
658 goto finish;
659 }
660
661 free(s->sysv_runlevels);
662 s->sysv_runlevels = d;
663 }
664
665 } else if (startswith_no_case(t, "description:")) {
666
667 size_t k = strlen(t);
668 char *d;
669 const char *j;
670
671 if (t[k-1] == '\\') {
672 state = DESCRIPTION;
673 t[k-1] = 0;
674 }
675
676 if ((j = strstrip(t+12)) && *j) {
677 if (!(d = strdup(j))) {
678 r = -ENOMEM;
679 goto finish;
680 }
681 } else
682 d = NULL;
683
684 free(chkconfig_description);
685 chkconfig_description = d;
686
687 } else if (startswith_no_case(t, "pidfile:")) {
688
689 char *fn;
690
691 state = NORMAL;
692
693 fn = strstrip(t+8);
694 if (!path_is_absolute(fn)) {
695 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
696 continue;
697 }
698
699 if (!(fn = strdup(fn))) {
700 r = -ENOMEM;
701 goto finish;
702 }
703
704 free(s->pid_file);
705 s->pid_file = fn;
706 }
707
708 } else if (state == DESCRIPTION) {
709
710 /* Try to parse Red Hat style description
711 * continuation */
712
713 size_t k = strlen(t);
714 char *j;
715
716 if (t[k-1] == '\\')
717 t[k-1] = 0;
718 else
719 state = NORMAL;
720
721 if ((j = strstrip(t)) && *j) {
722 char *d = NULL;
723
724 if (chkconfig_description)
725 d = strjoin(chkconfig_description, " ", j, NULL);
726 else
727 d = strdup(j);
728
729 if (!d) {
730 r = -ENOMEM;
731 goto finish;
732 }
733
734 free(chkconfig_description);
735 chkconfig_description = d;
736 }
737
738 } else if (state == LSB || state == LSB_DESCRIPTION) {
739
740 if (startswith_no_case(t, "Provides:")) {
741 char *i, *w;
742 size_t z;
743
744 state = LSB;
745
746 FOREACH_WORD_QUOTED(w, z, t+9, i) {
747 char *n, *m;
748
749 if (!(n = strndup(w, z))) {
750 r = -ENOMEM;
751 goto finish;
752 }
753
754 r = sysv_translate_facility(n, path_get_file_name(path), &m);
755 free(n);
756
757 if (r < 0)
758 goto finish;
759
760 if (r == 0)
761 continue;
762
763 if (unit_name_to_type(m) == UNIT_SERVICE)
764 r = unit_add_name(u, m);
765 else
766 /* NB: SysV targets
767 * which are provided
768 * by a service are
769 * pulled in by the
770 * services, as an
771 * indication that the
772 * generic service is
773 * now available. This
774 * is strictly
775 * one-way. The
776 * targets do NOT pull
777 * in the SysV
778 * services! */
779 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
780
781 if (r < 0)
782 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
783
784 free(m);
785 }
786
787 } else if (startswith_no_case(t, "Required-Start:") ||
788 startswith_no_case(t, "Should-Start:") ||
789 startswith_no_case(t, "X-Start-Before:") ||
790 startswith_no_case(t, "X-Start-After:")) {
791 char *i, *w;
792 size_t z;
793
794 state = LSB;
795
796 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
797 char *n, *m;
798
799 if (!(n = strndup(w, z))) {
800 r = -ENOMEM;
801 goto finish;
802 }
803
804 r = sysv_translate_facility(n, path_get_file_name(path), &m);
805
806 if (r < 0) {
807 log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r));
808 free(n);
809 continue;
810 }
811
812 free(n);
813
814 if (r == 0)
815 continue;
816
817 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
818
819 if (r < 0)
820 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
821
822 free(m);
823 }
824 } else if (startswith_no_case(t, "Default-Start:")) {
825 char *k, *d;
826
827 state = LSB;
828
829 k = delete_chars(t+14, WHITESPACE "-");
830
831 if (k[0] != 0) {
832 if (!(d = strdup(k))) {
833 r = -ENOMEM;
834 goto finish;
835 }
836
837 free(s->sysv_runlevels);
838 s->sysv_runlevels = d;
839 }
840
841 } else if (startswith_no_case(t, "Description:")) {
842 char *d, *j;
843
844 state = LSB_DESCRIPTION;
845
846 if ((j = strstrip(t+12)) && *j) {
847 if (!(d = strdup(j))) {
848 r = -ENOMEM;
849 goto finish;
850 }
851 } else
852 d = NULL;
853
854 free(long_description);
855 long_description = d;
856
857 } else if (startswith_no_case(t, "Short-Description:")) {
858 char *d, *j;
859
860 state = LSB;
861
862 if ((j = strstrip(t+18)) && *j) {
863 if (!(d = strdup(j))) {
864 r = -ENOMEM;
865 goto finish;
866 }
867 } else
868 d = NULL;
869
870 free(short_description);
871 short_description = d;
872
873 } else if (state == LSB_DESCRIPTION) {
874
875 if (startswith(l, "#\t") || startswith(l, "# ")) {
876 char *j;
877
878 if ((j = strstrip(t)) && *j) {
879 char *d = NULL;
880
881 if (long_description)
882 d = strjoin(long_description, " ", t, NULL);
883 else
884 d = strdup(j);
885
886 if (!d) {
887 r = -ENOMEM;
888 goto finish;
889 }
890
891 free(long_description);
892 long_description = d;
893 }
894
895 } else
896 state = LSB;
897 }
898 }
899 }
900
901 if ((r = sysv_exec_commands(s)) < 0)
902 goto finish;
903 if (s->sysv_runlevels &&
904 chars_intersect(RUNLEVELS_BOOT, s->sysv_runlevels) &&
905 chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
906 /* Service has both boot and "up" runlevels
907 configured. Kill the "up" ones. */
908 delete_chars(s->sysv_runlevels, RUNLEVELS_UP);
909 }
910
911 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
912 /* If there a runlevels configured for this service
913 * but none of the standard ones, then we assume this
914 * is some special kind of service (which might be
915 * needed for early boot) and don't create any links
916 * to it. */
917
918 UNIT(s)->default_dependencies = false;
919
920 /* Don't timeout special services during boot (like fsck) */
921 s->timeout_usec = 0;
922 } else
923 s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC;
924
925 /* Special setting for all SysV services */
926 s->type = SERVICE_FORKING;
927 s->remain_after_exit = !s->pid_file;
928 s->guess_main_pid = false;
929 s->restart = SERVICE_RESTART_NO;
930 s->exec_context.ignore_sigpipe = false;
931 s->exec_context.kill_mode = KILL_PROCESS;
932
933 /* We use the long description only if
934 * no short description is set. */
935
936 if (short_description)
937 description = short_description;
938 else if (chkconfig_description)
939 description = chkconfig_description;
940 else if (long_description)
941 description = long_description;
942 else
943 description = NULL;
944
945 if (description) {
946 char *d;
947
948 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
949 r = -ENOMEM;
950 goto finish;
951 }
952
953 u->description = d;
954 }
955
956 /* The priority that has been set in /etc/rcN.d/ hierarchies
957 * takes precedence over what is stored as default in the LSB
958 * header */
959 if (s->sysv_start_priority_from_rcnd >= 0)
960 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
961
962 u->load_state = UNIT_LOADED;
963 r = 0;
964
965finish:
966
967 if (f)
968 fclose(f);
969
970 free(short_description);
971 free(long_description);
972 free(chkconfig_description);
973
974 return r;
975}
976
977static int service_load_sysv_name(Service *s, const char *name) {
978 char **p;
979
980 assert(s);
981 assert(name);
982
983 /* For SysV services we strip the boot.*, rc.* and *.sh
984 * prefixes/suffixes. */
985#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
986 if (endswith(name, ".sh.service"))
987 return -ENOENT;
988#endif
989
990#ifdef TARGET_SUSE
991 if (startswith(name, "boot."))
992 return -ENOENT;
993#endif
994
995#ifdef TARGET_FRUGALWARE
996 if (startswith(name, "rc."))
997 return -ENOENT;
998#endif
999
1000 STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
1001 char *path;
1002 int r;
1003
1004 path = strjoin(*p, "/", name, NULL);
1005 if (!path)
1006 return -ENOMEM;
1007
1008 assert(endswith(path, ".service"));
1009 path[strlen(path)-8] = 0;
1010
1011 r = service_load_sysv_path(s, path);
1012
1013#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
1014 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1015 /* Try Debian style *.sh source'able init scripts */
1016 strcat(path, ".sh");
1017 r = service_load_sysv_path(s, path);
1018 }
1019#endif
1020 free(path);
1021
1022#ifdef TARGET_SUSE
1023 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1024 /* Try SUSE style boot.* init scripts */
1025
1026 path = strjoin(*p, "/boot.", name, NULL);
1027 if (!path)
1028 return -ENOMEM;
1029
1030 /* Drop .service suffix */
1031 path[strlen(path)-8] = 0;
1032 r = service_load_sysv_path(s, path);
1033 free(path);
1034 }
1035#endif
1036
1037#ifdef TARGET_FRUGALWARE
1038 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1039 /* Try Frugalware style rc.* init scripts */
1040
1041 path = strjoin(*p, "/rc.", name, NULL);
1042 if (!path)
1043 return -ENOMEM;
1044
1045 /* Drop .service suffix */
1046 path[strlen(path)-8] = 0;
1047 r = service_load_sysv_path(s, path);
1048 free(path);
1049 }
1050#endif
1051
1052 if (r < 0)
1053 return r;
1054
1055 if ((UNIT(s)->load_state != UNIT_STUB))
1056 break;
1057 }
1058
1059 return 0;
1060}
1061
1062static int service_load_sysv(Service *s) {
1063 const char *t;
1064 Iterator i;
1065 int r;
1066
1067 assert(s);
1068
1069 /* Load service data from SysV init scripts, preferably with
1070 * LSB headers ... */
1071
1072 if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
1073 return 0;
1074
1075 if ((t = UNIT(s)->id))
1076 if ((r = service_load_sysv_name(s, t)) < 0)
1077 return r;
1078
1079 if (UNIT(s)->load_state == UNIT_STUB)
1080 SET_FOREACH(t, UNIT(s)->names, i) {
1081 if (t == UNIT(s)->id)
1082 continue;
1083
1084 if ((r = service_load_sysv_name(s, t)) < 0)
1085 return r;
1086
1087 if (UNIT(s)->load_state != UNIT_STUB)
1088 break;
1089 }
1090
1091 return 0;
1092}
1093#endif
1094
1095static int fsck_fix_order(Service *s) {
1096 Unit *other;
1097 int r;
1098
1099 assert(s);
1100
1101 if (s->fsck_passno <= 0)
1102 return 0;
1103
1104 /* For each pair of services where both have an fsck priority
1105 * we order things based on it. */
1106
1107 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
1108 Service *t;
1109 UnitDependency d;
1110
1111 t = SERVICE(other);
1112
1113 if (s == t)
1114 continue;
1115
1116 if (UNIT(t)->load_state != UNIT_LOADED)
1117 continue;
1118
1119 if (t->fsck_passno <= 0)
1120 continue;
1121
1122 if (t->fsck_passno < s->fsck_passno)
1123 d = UNIT_AFTER;
1124 else if (t->fsck_passno > s->fsck_passno)
1125 d = UNIT_BEFORE;
1126 else
1127 continue;
1128
1129 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
1130 return r;
1131 }
1132
1133 return 0;
1134}
1135
1136static int service_verify(Service *s) {
1137 assert(s);
1138
1139 if (UNIT(s)->load_state != UNIT_LOADED)
1140 return 0;
1141
1142 if (!s->exec_command[SERVICE_EXEC_START]) {
1143 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
1144 return -EINVAL;
1145 }
1146
1147 if (s->type != SERVICE_ONESHOT &&
1148 s->exec_command[SERVICE_EXEC_START]->command_next) {
1149 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1150 return -EINVAL;
1151 }
1152
1153 if (s->type == SERVICE_ONESHOT &&
1154 s->exec_command[SERVICE_EXEC_RELOAD]) {
1155 log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1156 return -EINVAL;
1157 }
1158
1159 if (s->type == SERVICE_DBUS && !s->bus_name) {
1160 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id);
1161 return -EINVAL;
1162 }
1163
1164 if (s->bus_name && s->type != SERVICE_DBUS)
1165 log_warning("%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id);
1166
1167 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
1168 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
1169 return -EINVAL;
1170 }
1171
1172 return 0;
1173}
1174
1175static int service_add_default_dependencies(Service *s) {
1176 int r;
1177
1178 assert(s);
1179
1180 /* Add a number of automatic dependencies useful for the
1181 * majority of services. */
1182
1183 /* First, pull in base system */
1184 if (UNIT(s)->manager->running_as == MANAGER_SYSTEM) {
1185
1186 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1187 return r;
1188
1189 } else if (UNIT(s)->manager->running_as == MANAGER_USER) {
1190
1191 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1192 return r;
1193 }
1194
1195 /* Second, activate normal shutdown */
1196 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1197}
1198
1199static void service_fix_output(Service *s) {
1200 assert(s);
1201
1202 /* If nothing has been explicitly configured, patch default
1203 * output in. If input is socket/tty we avoid this however,
1204 * since in that case we want output to default to the same
1205 * place as we read input from. */
1206
1207 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1208 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1209 s->exec_context.std_input == EXEC_INPUT_NULL)
1210 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
1211
1212 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1213 s->exec_context.std_input == EXEC_INPUT_NULL)
1214 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
1215}
1216
1217static int service_load(Unit *u) {
1218 int r;
1219 Service *s = SERVICE(u);
1220
1221 assert(s);
1222
1223 /* Load a .service file */
1224 if ((r = unit_load_fragment(u)) < 0)
1225 return r;
1226
1227#ifdef HAVE_SYSV_COMPAT
1228 /* Load a classic init script as a fallback, if we couldn't find anything */
1229 if (u->load_state == UNIT_STUB)
1230 if ((r = service_load_sysv(s)) < 0)
1231 return r;
1232#endif
1233
1234 /* Still nothing found? Then let's give up */
1235 if (u->load_state == UNIT_STUB)
1236 return -ENOENT;
1237
1238 /* We were able to load something, then let's add in the
1239 * dropin directories. */
1240 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1241 return r;
1242
1243 /* This is a new unit? Then let's add in some extras */
1244 if (u->load_state == UNIT_LOADED) {
1245 if (s->type == _SERVICE_TYPE_INVALID)
1246 s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE;
1247
1248 /* Oneshot services have disabled timeout by default */
1249 if (s->type == SERVICE_ONESHOT && !s->timeout_defined)
1250 s->timeout_usec = 0;
1251
1252 service_fix_output(s);
1253
1254 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1255 return r;
1256
1257 if ((r = unit_add_default_cgroups(u)) < 0)
1258 return r;
1259
1260#ifdef HAVE_SYSV_COMPAT
1261 if ((r = sysv_fix_order(s)) < 0)
1262 return r;
1263#endif
1264
1265 if ((r = fsck_fix_order(s)) < 0)
1266 return r;
1267
1268 if (s->bus_name)
1269 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1270 return r;
1271
1272 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1273 s->notify_access = NOTIFY_MAIN;
1274
1275 if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
1276 s->notify_access = NOTIFY_MAIN;
1277
1278 if (s->type == SERVICE_DBUS || s->bus_name)
1279 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
1280 return r;
1281
1282 if (UNIT(s)->default_dependencies)
1283 if ((r = service_add_default_dependencies(s)) < 0)
1284 return r;
1285 }
1286
1287 return service_verify(s);
1288}
1289
1290static void service_dump(Unit *u, FILE *f, const char *prefix) {
1291
1292 ServiceExecCommand c;
1293 Service *s = SERVICE(u);
1294 const char *prefix2;
1295 char *p2;
1296
1297 assert(s);
1298
1299 p2 = strappend(prefix, "\t");
1300 prefix2 = p2 ? p2 : prefix;
1301
1302 fprintf(f,
1303 "%sService State: %s\n"
1304 "%sResult: %s\n"
1305 "%sReload Result: %s\n"
1306 "%sPermissionsStartOnly: %s\n"
1307 "%sRootDirectoryStartOnly: %s\n"
1308 "%sRemainAfterExit: %s\n"
1309 "%sGuessMainPID: %s\n"
1310 "%sType: %s\n"
1311 "%sRestart: %s\n"
1312 "%sNotifyAccess: %s\n",
1313 prefix, service_state_to_string(s->state),
1314 prefix, service_result_to_string(s->result),
1315 prefix, service_result_to_string(s->reload_result),
1316 prefix, yes_no(s->permissions_start_only),
1317 prefix, yes_no(s->root_directory_start_only),
1318 prefix, yes_no(s->remain_after_exit),
1319 prefix, yes_no(s->guess_main_pid),
1320 prefix, service_type_to_string(s->type),
1321 prefix, service_restart_to_string(s->restart),
1322 prefix, notify_access_to_string(s->notify_access));
1323
1324 if (s->control_pid > 0)
1325 fprintf(f,
1326 "%sControl PID: %lu\n",
1327 prefix, (unsigned long) s->control_pid);
1328
1329 if (s->main_pid > 0)
1330 fprintf(f,
1331 "%sMain PID: %lu\n"
1332 "%sMain PID Known: %s\n"
1333 "%sMain PID Alien: %s\n",
1334 prefix, (unsigned long) s->main_pid,
1335 prefix, yes_no(s->main_pid_known),
1336 prefix, yes_no(s->main_pid_alien));
1337
1338 if (s->pid_file)
1339 fprintf(f,
1340 "%sPIDFile: %s\n",
1341 prefix, s->pid_file);
1342
1343 if (s->bus_name)
1344 fprintf(f,
1345 "%sBusName: %s\n"
1346 "%sBus Name Good: %s\n",
1347 prefix, s->bus_name,
1348 prefix, yes_no(s->bus_name_good));
1349
1350 exec_context_dump(&s->exec_context, f, prefix);
1351
1352 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1353
1354 if (!s->exec_command[c])
1355 continue;
1356
1357 fprintf(f, "%s-> %s:\n",
1358 prefix, service_exec_command_to_string(c));
1359
1360 exec_command_dump_list(s->exec_command[c], f, prefix2);
1361 }
1362
1363#ifdef HAVE_SYSV_COMPAT
1364 if (s->is_sysv)
1365 fprintf(f,
1366 "%sSysV Init Script has LSB Header: %s\n"
1367 "%sSysVEnabled: %s\n",
1368 prefix, yes_no(s->sysv_has_lsb),
1369 prefix, yes_no(s->sysv_enabled));
1370
1371 if (s->sysv_start_priority >= 0)
1372 fprintf(f,
1373 "%sSysVStartPriority: %i\n",
1374 prefix, s->sysv_start_priority);
1375
1376 if (s->sysv_runlevels)
1377 fprintf(f, "%sSysVRunLevels: %s\n",
1378 prefix, s->sysv_runlevels);
1379#endif
1380
1381 if (s->fsck_passno > 0)
1382 fprintf(f,
1383 "%sFsckPassNo: %i\n",
1384 prefix, s->fsck_passno);
1385
1386 if (s->status_text)
1387 fprintf(f, "%sStatus Text: %s\n",
1388 prefix, s->status_text);
1389
1390 free(p2);
1391}
1392
1393static int service_load_pid_file(Service *s, bool may_warn) {
1394 char *k;
1395 int r;
1396 pid_t pid;
1397
1398 assert(s);
1399
1400 if (!s->pid_file)
1401 return -ENOENT;
1402
1403 if ((r = read_one_line_file(s->pid_file, &k)) < 0) {
1404 if (may_warn)
1405 log_info("PID file %s not readable (yet?) after %s.",
1406 s->pid_file, service_state_to_string(s->state));
1407 return r;
1408 }
1409
1410 r = parse_pid(k, &pid);
1411 free(k);
1412
1413 if (r < 0)
1414 return r;
1415
1416 if (kill(pid, 0) < 0 && errno != EPERM) {
1417 if (may_warn)
1418 log_info("PID %lu read from file %s does not exist.",
1419 (unsigned long) pid, s->pid_file);
1420 return -ESRCH;
1421 }
1422
1423 if (s->main_pid_known) {
1424 if (pid == s->main_pid)
1425 return 0;
1426
1427 log_debug("Main PID changing: %lu -> %lu",
1428 (unsigned long) s->main_pid, (unsigned long) pid);
1429 service_unwatch_main_pid(s);
1430 s->main_pid_known = false;
1431 } else
1432 log_debug("Main PID loaded: %lu", (unsigned long) pid);
1433
1434 if ((r = service_set_main_pid(s, pid)) < 0)
1435 return r;
1436
1437 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1438 /* FIXME: we need to do something here */
1439 return r;
1440
1441 return 0;
1442}
1443
1444static int service_search_main_pid(Service *s) {
1445 pid_t pid;
1446 int r;
1447
1448 assert(s);
1449
1450 /* If we know it anyway, don't ever fallback to unreliable
1451 * heuristics */
1452 if (s->main_pid_known)
1453 return 0;
1454
1455 if (!s->guess_main_pid)
1456 return 0;
1457
1458 assert(s->main_pid <= 0);
1459
1460 if ((pid = cgroup_bonding_search_main_pid_list(UNIT(s)->cgroup_bondings)) <= 0)
1461 return -ENOENT;
1462
1463 log_debug("Main PID guessed: %lu", (unsigned long) pid);
1464 if ((r = service_set_main_pid(s, pid)) < 0)
1465 return r;
1466
1467 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1468 /* FIXME: we need to do something here */
1469 return r;
1470
1471 return 0;
1472}
1473
1474static void service_notify_sockets_dead(Service *s, bool failed_permanent) {
1475 Iterator i;
1476 Unit *u;
1477
1478 assert(s);
1479
1480 /* Notifies all our sockets when we die */
1481
1482 if (s->socket_fd >= 0)
1483 return;
1484
1485 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i)
1486 if (u->type == UNIT_SOCKET)
1487 socket_notify_service_dead(SOCKET(u), failed_permanent);
1488
1489 return;
1490}
1491
1492static void service_set_state(Service *s, ServiceState state) {
1493 ServiceState old_state;
1494 const UnitActiveState *table;
1495 assert(s);
1496
1497 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1498
1499 old_state = s->state;
1500 s->state = state;
1501
1502 service_unwatch_pid_file(s);
1503
1504 if (state != SERVICE_START_PRE &&
1505 state != SERVICE_START &&
1506 state != SERVICE_START_POST &&
1507 state != SERVICE_RELOAD &&
1508 state != SERVICE_STOP &&
1509 state != SERVICE_STOP_SIGTERM &&
1510 state != SERVICE_STOP_SIGKILL &&
1511 state != SERVICE_STOP_POST &&
1512 state != SERVICE_FINAL_SIGTERM &&
1513 state != SERVICE_FINAL_SIGKILL &&
1514 state != SERVICE_AUTO_RESTART)
1515 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1516
1517 if (state != SERVICE_START &&
1518 state != SERVICE_START_POST &&
1519 state != SERVICE_RUNNING &&
1520 state != SERVICE_RELOAD &&
1521 state != SERVICE_STOP &&
1522 state != SERVICE_STOP_SIGTERM &&
1523 state != SERVICE_STOP_SIGKILL) {
1524 service_unwatch_main_pid(s);
1525 s->main_command = NULL;
1526 }
1527
1528 if (state != SERVICE_START_PRE &&
1529 state != SERVICE_START &&
1530 state != SERVICE_START_POST &&
1531 state != SERVICE_RELOAD &&
1532 state != SERVICE_STOP &&
1533 state != SERVICE_STOP_SIGTERM &&
1534 state != SERVICE_STOP_SIGKILL &&
1535 state != SERVICE_STOP_POST &&
1536 state != SERVICE_FINAL_SIGTERM &&
1537 state != SERVICE_FINAL_SIGKILL) {
1538 service_unwatch_control_pid(s);
1539 s->control_command = NULL;
1540 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1541 }
1542
1543 if (state == SERVICE_DEAD ||
1544 state == SERVICE_STOP ||
1545 state == SERVICE_STOP_SIGTERM ||
1546 state == SERVICE_STOP_SIGKILL ||
1547 state == SERVICE_STOP_POST ||
1548 state == SERVICE_FINAL_SIGTERM ||
1549 state == SERVICE_FINAL_SIGKILL ||
1550 state == SERVICE_FAILED ||
1551 state == SERVICE_AUTO_RESTART)
1552 service_notify_sockets_dead(s, false);
1553
1554 if (state != SERVICE_START_PRE &&
1555 state != SERVICE_START &&
1556 state != SERVICE_START_POST &&
1557 state != SERVICE_RUNNING &&
1558 state != SERVICE_RELOAD &&
1559 state != SERVICE_STOP &&
1560 state != SERVICE_STOP_SIGTERM &&
1561 state != SERVICE_STOP_SIGKILL &&
1562 state != SERVICE_STOP_POST &&
1563 state != SERVICE_FINAL_SIGTERM &&
1564 state != SERVICE_FINAL_SIGKILL &&
1565 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1566 service_close_socket_fd(s);
1567 service_connection_unref(s);
1568 }
1569
1570 if (state == SERVICE_STOP)
1571 service_stop_watchdog(s);
1572
1573 /* For the inactive states unit_notify() will trim the cgroup,
1574 * but for exit we have to do that ourselves... */
1575 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1576 cgroup_bonding_trim_list(UNIT(s)->cgroup_bondings, true);
1577
1578 if (old_state != state)
1579 log_debug("%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state));
1580
1581 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1582 s->reload_result = SERVICE_SUCCESS;
1583}
1584
1585static int service_coldplug(Unit *u) {
1586 Service *s = SERVICE(u);
1587 int r;
1588
1589 assert(s);
1590 assert(s->state == SERVICE_DEAD);
1591
1592 if (s->deserialized_state != s->state) {
1593
1594 if (s->deserialized_state == SERVICE_START_PRE ||
1595 s->deserialized_state == SERVICE_START ||
1596 s->deserialized_state == SERVICE_START_POST ||
1597 s->deserialized_state == SERVICE_RELOAD ||
1598 s->deserialized_state == SERVICE_STOP ||
1599 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1600 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1601 s->deserialized_state == SERVICE_STOP_POST ||
1602 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1603 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1604 s->deserialized_state == SERVICE_AUTO_RESTART) {
1605
1606 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1607 usec_t k;
1608
1609 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1610
1611 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1612 return r;
1613 }
1614 }
1615
1616 if ((s->deserialized_state == SERVICE_START &&
1617 (s->type == SERVICE_FORKING ||
1618 s->type == SERVICE_DBUS ||
1619 s->type == SERVICE_ONESHOT ||
1620 s->type == SERVICE_NOTIFY)) ||
1621 s->deserialized_state == SERVICE_START_POST ||
1622 s->deserialized_state == SERVICE_RUNNING ||
1623 s->deserialized_state == SERVICE_RELOAD ||
1624 s->deserialized_state == SERVICE_STOP ||
1625 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1626 s->deserialized_state == SERVICE_STOP_SIGKILL)
1627 if (s->main_pid > 0)
1628 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1629 return r;
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 if (s->control_pid > 0)
1642 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1643 return r;
1644
1645 if (s->deserialized_state == SERVICE_START_POST ||
1646 s->deserialized_state == SERVICE_RUNNING)
1647 service_handle_watchdog(s);
1648
1649 service_set_state(s, s->deserialized_state);
1650 }
1651 return 0;
1652}
1653
1654static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1655 Iterator i;
1656 int r;
1657 int *rfds = NULL;
1658 unsigned rn_fds = 0;
1659 Unit *u;
1660
1661 assert(s);
1662 assert(fds);
1663 assert(n_fds);
1664
1665 if (s->socket_fd >= 0)
1666 return 0;
1667
1668 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1669 int *cfds;
1670 unsigned cn_fds;
1671 Socket *sock;
1672
1673 if (u->type != UNIT_SOCKET)
1674 continue;
1675
1676 sock = SOCKET(u);
1677
1678 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1679 goto fail;
1680
1681 if (!cfds)
1682 continue;
1683
1684 if (!rfds) {
1685 rfds = cfds;
1686 rn_fds = cn_fds;
1687 } else {
1688 int *t;
1689
1690 if (!(t = new(int, rn_fds+cn_fds))) {
1691 free(cfds);
1692 r = -ENOMEM;
1693 goto fail;
1694 }
1695
1696 memcpy(t, rfds, rn_fds * sizeof(int));
1697 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1698 free(rfds);
1699 free(cfds);
1700
1701 rfds = t;
1702 rn_fds = rn_fds+cn_fds;
1703 }
1704 }
1705
1706 *fds = rfds;
1707 *n_fds = rn_fds;
1708
1709 return 0;
1710
1711fail:
1712 free(rfds);
1713
1714 return r;
1715}
1716
1717static int service_spawn(
1718 Service *s,
1719 ExecCommand *c,
1720 bool timeout,
1721 bool pass_fds,
1722 bool apply_permissions,
1723 bool apply_chroot,
1724 bool apply_tty_stdin,
1725 bool set_notify_socket,
1726 bool is_control,
1727 pid_t *_pid) {
1728
1729 pid_t pid;
1730 int r;
1731 int *fds = NULL, *fdsbuf = NULL;
1732 unsigned n_fds = 0, n_env = 0;
1733 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1734
1735 assert(s);
1736 assert(c);
1737 assert(_pid);
1738
1739 if (pass_fds ||
1740 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1741 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1742 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1743
1744 if (s->socket_fd >= 0) {
1745 fds = &s->socket_fd;
1746 n_fds = 1;
1747 } else {
1748 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1749 goto fail;
1750
1751 fds = fdsbuf;
1752 }
1753 }
1754
1755 if (timeout && s->timeout_usec) {
1756 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1757 goto fail;
1758 } else
1759 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1760
1761 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1762 r = -ENOMEM;
1763 goto fail;
1764 }
1765
1766 if (!(our_env = new0(char*, 4))) {
1767 r = -ENOMEM;
1768 goto fail;
1769 }
1770
1771 if (set_notify_socket)
1772 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1773 r = -ENOMEM;
1774 goto fail;
1775 }
1776
1777 if (s->main_pid > 0)
1778 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1779 r = -ENOMEM;
1780 goto fail;
1781 }
1782
1783 if (s->watchdog_usec > 0)
1784 if (asprintf(our_env + n_env++, "WATCHDOG_USEC=%llu", (unsigned long long) s->watchdog_usec) < 0) {
1785 r = -ENOMEM;
1786 goto fail;
1787 }
1788
1789 if (!(final_env = strv_env_merge(2,
1790 UNIT(s)->manager->environment,
1791 our_env,
1792 NULL))) {
1793 r = -ENOMEM;
1794 goto fail;
1795 }
1796
1797 r = exec_spawn(c,
1798 argv,
1799 &s->exec_context,
1800 fds, n_fds,
1801 final_env,
1802 apply_permissions,
1803 apply_chroot,
1804 apply_tty_stdin,
1805 UNIT(s)->manager->confirm_spawn,
1806 UNIT(s)->cgroup_bondings,
1807 UNIT(s)->cgroup_attributes,
1808 is_control ? "control" : NULL,
1809 UNIT(s)->id,
1810 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1811 &pid);
1812
1813 if (r < 0)
1814 goto fail;
1815
1816
1817 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1818 /* FIXME: we need to do something here */
1819 goto fail;
1820
1821 free(fdsbuf);
1822 strv_free(argv);
1823 strv_free(our_env);
1824 strv_free(final_env);
1825
1826 *_pid = pid;
1827
1828 return 0;
1829
1830fail:
1831 free(fdsbuf);
1832 strv_free(argv);
1833 strv_free(our_env);
1834 strv_free(final_env);
1835
1836 if (timeout)
1837 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1838
1839 return r;
1840}
1841
1842static int main_pid_good(Service *s) {
1843 assert(s);
1844
1845 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1846 * don't know */
1847
1848 /* If we know the pid file, then lets just check if it is
1849 * still valid */
1850 if (s->main_pid_known) {
1851
1852 /* If it's an alien child let's check if it is still
1853 * alive ... */
1854 if (s->main_pid_alien)
1855 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1856
1857 /* .. otherwise assume we'll get a SIGCHLD for it,
1858 * which we really should wait for to collect exit
1859 * status and code */
1860 return s->main_pid > 0;
1861 }
1862
1863 /* We don't know the pid */
1864 return -EAGAIN;
1865}
1866
1867static int control_pid_good(Service *s) {
1868 assert(s);
1869
1870 return s->control_pid > 0;
1871}
1872
1873static int cgroup_good(Service *s) {
1874 int r;
1875
1876 assert(s);
1877
1878 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->cgroup_bondings)) < 0)
1879 return r;
1880
1881 return !r;
1882}
1883
1884static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1885 int r;
1886 assert(s);
1887
1888 if (f != SERVICE_SUCCESS)
1889 s->result = f;
1890
1891 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1892
1893 if (allow_restart &&
1894 !s->forbid_restart &&
1895 (s->restart == SERVICE_RESTART_ALWAYS ||
1896 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1897 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1898 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1899 s->result == SERVICE_FAILURE_CORE_DUMP)))) {
1900
1901 r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch);
1902 if (r < 0)
1903 goto fail;
1904
1905 service_set_state(s, SERVICE_AUTO_RESTART);
1906 }
1907
1908 s->forbid_restart = false;
1909
1910 return;
1911
1912fail:
1913 log_warning("%s failed to run install restart timer: %s", UNIT(s)->id, strerror(-r));
1914 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1915}
1916
1917static void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
1918
1919static void service_enter_stop_post(Service *s, ServiceResult f) {
1920 int r;
1921 assert(s);
1922
1923 if (f != SERVICE_SUCCESS)
1924 s->result = f;
1925
1926 service_unwatch_control_pid(s);
1927
1928 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1929 s->control_command_id = SERVICE_EXEC_STOP_POST;
1930
1931 r = service_spawn(s,
1932 s->control_command,
1933 true,
1934 false,
1935 !s->permissions_start_only,
1936 !s->root_directory_start_only,
1937 true,
1938 false,
1939 true,
1940 &s->control_pid);
1941 if (r < 0)
1942 goto fail;
1943
1944
1945 service_set_state(s, SERVICE_STOP_POST);
1946 } else
1947 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
1948
1949 return;
1950
1951fail:
1952 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r));
1953 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1954}
1955
1956static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1957 int r;
1958 Set *pid_set = NULL;
1959 bool wait_for_exit = false;
1960
1961 assert(s);
1962
1963 if (f != SERVICE_SUCCESS)
1964 s->result = f;
1965
1966 if (s->exec_context.kill_mode != KILL_NONE) {
1967 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1968
1969 if (s->main_pid > 0) {
1970 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
1971 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1972 else
1973 wait_for_exit = !s->main_pid_alien;
1974 }
1975
1976 if (s->control_pid > 0) {
1977 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1978 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1979 else
1980 wait_for_exit = true;
1981 }
1982
1983 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1984
1985 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1986 r = -ENOMEM;
1987 goto fail;
1988 }
1989
1990 /* Exclude the main/control pids from being killed via the cgroup */
1991 if (s->main_pid > 0)
1992 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1993 goto fail;
1994
1995 if (s->control_pid > 0)
1996 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1997 goto fail;
1998
1999 r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, false, pid_set, NULL);
2000 if (r < 0) {
2001 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
2002 log_warning("Failed to kill control group: %s", strerror(-r));
2003 } else if (r > 0)
2004 wait_for_exit = true;
2005
2006 set_free(pid_set);
2007 pid_set = NULL;
2008 }
2009 }
2010
2011 if (wait_for_exit) {
2012 if (s->timeout_usec > 0)
2013 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
2014 goto fail;
2015
2016 service_set_state(s, state);
2017 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2018 service_enter_stop_post(s, SERVICE_SUCCESS);
2019 else
2020 service_enter_dead(s, SERVICE_SUCCESS, true);
2021
2022 return;
2023
2024fail:
2025 log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
2026
2027 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2028 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
2029 else
2030 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2031
2032 if (pid_set)
2033 set_free(pid_set);
2034}
2035
2036static void service_enter_stop(Service *s, ServiceResult f) {
2037 int r;
2038
2039 assert(s);
2040
2041 if (f != SERVICE_SUCCESS)
2042 s->result = f;
2043
2044 service_unwatch_control_pid(s);
2045
2046 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
2047 s->control_command_id = SERVICE_EXEC_STOP;
2048
2049 r = service_spawn(s,
2050 s->control_command,
2051 true,
2052 false,
2053 !s->permissions_start_only,
2054 !s->root_directory_start_only,
2055 false,
2056 false,
2057 true,
2058 &s->control_pid);
2059 if (r < 0)
2060 goto fail;
2061
2062 service_set_state(s, SERVICE_STOP);
2063 } else
2064 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2065
2066 return;
2067
2068fail:
2069 log_warning("%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2070 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2071}
2072
2073static void service_enter_running(Service *s, ServiceResult f) {
2074 int main_pid_ok, cgroup_ok;
2075 assert(s);
2076
2077 if (f != SERVICE_SUCCESS)
2078 s->result = f;
2079
2080 main_pid_ok = main_pid_good(s);
2081 cgroup_ok = cgroup_good(s);
2082
2083 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2084 (s->bus_name_good || s->type != SERVICE_DBUS))
2085 service_set_state(s, SERVICE_RUNNING);
2086 else if (s->remain_after_exit)
2087 service_set_state(s, SERVICE_EXITED);
2088 else
2089 service_enter_stop(s, SERVICE_SUCCESS);
2090}
2091
2092static void service_enter_start_post(Service *s) {
2093 int r;
2094 assert(s);
2095
2096 service_unwatch_control_pid(s);
2097
2098 if (s->watchdog_usec > 0)
2099 service_reset_watchdog(s);
2100
2101 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
2102 s->control_command_id = SERVICE_EXEC_START_POST;
2103
2104 r = service_spawn(s,
2105 s->control_command,
2106 true,
2107 false,
2108 !s->permissions_start_only,
2109 !s->root_directory_start_only,
2110 false,
2111 false,
2112 true,
2113 &s->control_pid);
2114 if (r < 0)
2115 goto fail;
2116
2117 service_set_state(s, SERVICE_START_POST);
2118 } else
2119 service_enter_running(s, SERVICE_SUCCESS);
2120
2121 return;
2122
2123fail:
2124 log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2125 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2126}
2127
2128static void service_enter_start(Service *s) {
2129 pid_t pid;
2130 int r;
2131 ExecCommand *c;
2132
2133 assert(s);
2134
2135 assert(s->exec_command[SERVICE_EXEC_START]);
2136 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2137
2138 if (s->type == SERVICE_FORKING)
2139 service_unwatch_control_pid(s);
2140 else
2141 service_unwatch_main_pid(s);
2142
2143 /* We want to ensure that nobody leaks processes from
2144 * START_PRE here, so let's go on a killing spree, People
2145 * should not spawn long running processes from START_PRE. */
2146 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2147
2148 if (s->type == SERVICE_FORKING) {
2149 s->control_command_id = SERVICE_EXEC_START;
2150 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2151
2152 s->main_command = NULL;
2153 } else {
2154 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2155 s->control_command = NULL;
2156
2157 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2158 }
2159
2160 r = service_spawn(s,
2161 c,
2162 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2163 true,
2164 true,
2165 true,
2166 true,
2167 s->notify_access != NOTIFY_NONE,
2168 false,
2169 &pid);
2170 if (r < 0)
2171 goto fail;
2172
2173 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2174 /* For simple services we immediately start
2175 * the START_POST binaries. */
2176
2177 service_set_main_pid(s, pid);
2178 service_enter_start_post(s);
2179
2180 } else if (s->type == SERVICE_FORKING) {
2181
2182 /* For forking services we wait until the start
2183 * process exited. */
2184
2185 s->control_pid = pid;
2186 service_set_state(s, SERVICE_START);
2187
2188 } else if (s->type == SERVICE_ONESHOT ||
2189 s->type == SERVICE_DBUS ||
2190 s->type == SERVICE_NOTIFY) {
2191
2192 /* For oneshot services we wait until the start
2193 * process exited, too, but it is our main process. */
2194
2195 /* For D-Bus services we know the main pid right away,
2196 * but wait for the bus name to appear on the
2197 * bus. Notify services are similar. */
2198
2199 service_set_main_pid(s, pid);
2200 service_set_state(s, SERVICE_START);
2201 } else
2202 assert_not_reached("Unknown service type");
2203
2204 return;
2205
2206fail:
2207 log_warning("%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2208 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2209}
2210
2211static void service_enter_start_pre(Service *s) {
2212 int r;
2213
2214 assert(s);
2215
2216 service_unwatch_control_pid(s);
2217
2218 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2219
2220 /* Before we start anything, let's clear up what might
2221 * be left from previous runs. */
2222 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2223
2224 s->control_command_id = SERVICE_EXEC_START_PRE;
2225
2226 r = service_spawn(s,
2227 s->control_command,
2228 true,
2229 false,
2230 !s->permissions_start_only,
2231 !s->root_directory_start_only,
2232 true,
2233 false,
2234 true,
2235 &s->control_pid);
2236 if (r < 0)
2237 goto fail;
2238
2239 service_set_state(s, SERVICE_START_PRE);
2240 } else
2241 service_enter_start(s);
2242
2243 return;
2244
2245fail:
2246 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2247 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2248}
2249
2250static void service_enter_restart(Service *s) {
2251 int r;
2252 DBusError error;
2253
2254 assert(s);
2255 dbus_error_init(&error);
2256
2257 if (UNIT(s)->job) {
2258 log_info("Job pending for unit, delaying automatic restart.");
2259
2260 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2261 goto fail;
2262
2263 return;
2264 }
2265
2266 /* Any units that are bound to this service must also be
2267 * restarted. We use JOB_RESTART (instead of the more obvious
2268 * JOB_START) here so that those dependency jobs will be added
2269 * as well. */
2270 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2271 if (r < 0)
2272 goto fail;
2273
2274 log_debug("%s scheduled restart job.", UNIT(s)->id);
2275 return;
2276
2277fail:
2278 log_warning("%s failed to schedule restart job: %s", UNIT(s)->id, bus_error(&error, -r));
2279 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2280
2281 dbus_error_free(&error);
2282}
2283
2284static void service_enter_reload(Service *s) {
2285 int r;
2286
2287 assert(s);
2288
2289 service_unwatch_control_pid(s);
2290
2291 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2292 s->control_command_id = SERVICE_EXEC_RELOAD;
2293
2294 r = service_spawn(s,
2295 s->control_command,
2296 true,
2297 false,
2298 !s->permissions_start_only,
2299 !s->root_directory_start_only,
2300 false,
2301 false,
2302 true,
2303 &s->control_pid);
2304 if (r < 0)
2305 goto fail;
2306
2307 service_set_state(s, SERVICE_RELOAD);
2308 } else
2309 service_enter_running(s, SERVICE_SUCCESS);
2310
2311 return;
2312
2313fail:
2314 log_warning("%s failed to run 'reload' task: %s", UNIT(s)->id, strerror(-r));
2315 s->reload_result = SERVICE_FAILURE_RESOURCES;
2316 service_enter_running(s, SERVICE_SUCCESS);
2317}
2318
2319static void service_run_next_control(Service *s) {
2320 int r;
2321
2322 assert(s);
2323 assert(s->control_command);
2324 assert(s->control_command->command_next);
2325
2326 assert(s->control_command_id != SERVICE_EXEC_START);
2327
2328 s->control_command = s->control_command->command_next;
2329 service_unwatch_control_pid(s);
2330
2331 r = service_spawn(s,
2332 s->control_command,
2333 true,
2334 false,
2335 !s->permissions_start_only,
2336 !s->root_directory_start_only,
2337 s->control_command_id == SERVICE_EXEC_START_PRE ||
2338 s->control_command_id == SERVICE_EXEC_STOP_POST,
2339 false,
2340 true,
2341 &s->control_pid);
2342 if (r < 0)
2343 goto fail;
2344
2345 return;
2346
2347fail:
2348 log_warning("%s failed to run next control task: %s", UNIT(s)->id, strerror(-r));
2349
2350 if (s->state == SERVICE_START_PRE)
2351 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2352 else if (s->state == SERVICE_STOP)
2353 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2354 else if (s->state == SERVICE_STOP_POST)
2355 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2356 else if (s->state == SERVICE_RELOAD) {
2357 s->reload_result = SERVICE_FAILURE_RESOURCES;
2358 service_enter_running(s, SERVICE_SUCCESS);
2359 } else
2360 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2361}
2362
2363static void service_run_next_main(Service *s) {
2364 pid_t pid;
2365 int r;
2366
2367 assert(s);
2368 assert(s->main_command);
2369 assert(s->main_command->command_next);
2370 assert(s->type == SERVICE_ONESHOT);
2371
2372 s->main_command = s->main_command->command_next;
2373 service_unwatch_main_pid(s);
2374
2375 r = service_spawn(s,
2376 s->main_command,
2377 true,
2378 true,
2379 true,
2380 true,
2381 true,
2382 s->notify_access != NOTIFY_NONE,
2383 false,
2384 &pid);
2385 if (r < 0)
2386 goto fail;
2387
2388 service_set_main_pid(s, pid);
2389
2390 return;
2391
2392fail:
2393 log_warning("%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2394 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2395}
2396
2397static int service_start_limit_test(Service *s) {
2398 assert(s);
2399
2400 if (ratelimit_test(&s->start_limit))
2401 return 0;
2402
2403 switch (s->start_limit_action) {
2404
2405 case SERVICE_START_LIMIT_NONE:
2406 log_warning("%s start request repeated too quickly, refusing to start.", UNIT(s)->id);
2407 break;
2408
2409 case SERVICE_START_LIMIT_REBOOT: {
2410 DBusError error;
2411 int r;
2412
2413 dbus_error_init(&error);
2414
2415 log_warning("%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2416
2417 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START, SPECIAL_REBOOT_TARGET, JOB_REPLACE, true, &error, NULL);
2418 if (r < 0) {
2419 log_error("Failed to reboot: %s.", bus_error(&error, r));
2420 dbus_error_free(&error);
2421 }
2422
2423 break;
2424 }
2425
2426 case SERVICE_START_LIMIT_REBOOT_FORCE:
2427 log_warning("%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2428 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2429 break;
2430
2431 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2432 log_warning("%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2433 reboot(RB_AUTOBOOT);
2434 break;
2435
2436 default:
2437 log_error("start limit action=%i", s->start_limit_action);
2438 assert_not_reached("Unknown StartLimitAction.");
2439 }
2440
2441 return -ECANCELED;
2442}
2443
2444static int service_start(Unit *u) {
2445 Service *s = SERVICE(u);
2446 int r;
2447
2448 assert(s);
2449
2450 /* We cannot fulfill this request right now, try again later
2451 * please! */
2452 if (s->state == SERVICE_STOP ||
2453 s->state == SERVICE_STOP_SIGTERM ||
2454 s->state == SERVICE_STOP_SIGKILL ||
2455 s->state == SERVICE_STOP_POST ||
2456 s->state == SERVICE_FINAL_SIGTERM ||
2457 s->state == SERVICE_FINAL_SIGKILL)
2458 return -EAGAIN;
2459
2460 /* Already on it! */
2461 if (s->state == SERVICE_START_PRE ||
2462 s->state == SERVICE_START ||
2463 s->state == SERVICE_START_POST)
2464 return 0;
2465
2466 /* A service that will be restarted must be stopped first to
2467 * trigger BindsTo and/or OnFailure dependencies. If a user
2468 * does not want to wait for the holdoff time to elapse, the
2469 * service should be manually restarted, not started. */
2470 if (s->state == SERVICE_AUTO_RESTART) {
2471 log_warning("%s automatic restart is pending, must be stopped before issuing start request.", UNIT(s)->id);
2472 return -ECANCELED;
2473 }
2474
2475 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2476
2477 /* Make sure we don't enter a busy loop of some kind. */
2478 r = service_start_limit_test(s);
2479 if (r < 0) {
2480 service_notify_sockets_dead(s, true);
2481 return r;
2482 }
2483
2484 s->result = SERVICE_SUCCESS;
2485 s->reload_result = SERVICE_SUCCESS;
2486 s->main_pid_known = false;
2487 s->main_pid_alien = false;
2488 s->forbid_restart = false;
2489
2490 service_enter_start_pre(s);
2491 return 0;
2492}
2493
2494static int service_stop(Unit *u) {
2495 Service *s = SERVICE(u);
2496
2497 assert(s);
2498
2499 /* Don't create restart jobs from here. */
2500 s->forbid_restart = true;
2501
2502 /* Already on it */
2503 if (s->state == SERVICE_STOP ||
2504 s->state == SERVICE_STOP_SIGTERM ||
2505 s->state == SERVICE_STOP_SIGKILL ||
2506 s->state == SERVICE_STOP_POST ||
2507 s->state == SERVICE_FINAL_SIGTERM ||
2508 s->state == SERVICE_FINAL_SIGKILL)
2509 return 0;
2510
2511 /* A restart will be scheduled or is in progress. */
2512 if (s->state == SERVICE_AUTO_RESTART) {
2513 service_set_state(s, SERVICE_DEAD);
2514 return 0;
2515 }
2516
2517 /* If there's already something running we go directly into
2518 * kill mode. */
2519 if (s->state == SERVICE_START_PRE ||
2520 s->state == SERVICE_START ||
2521 s->state == SERVICE_START_POST ||
2522 s->state == SERVICE_RELOAD) {
2523 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2524 return 0;
2525 }
2526
2527 assert(s->state == SERVICE_RUNNING ||
2528 s->state == SERVICE_EXITED);
2529
2530 service_enter_stop(s, SERVICE_SUCCESS);
2531 return 0;
2532}
2533
2534static int service_reload(Unit *u) {
2535 Service *s = SERVICE(u);
2536
2537 assert(s);
2538
2539 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2540
2541 service_enter_reload(s);
2542 return 0;
2543}
2544
2545static bool service_can_reload(Unit *u) {
2546 Service *s = SERVICE(u);
2547
2548 assert(s);
2549
2550 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2551}
2552
2553static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2554 Service *s = SERVICE(u);
2555
2556 assert(u);
2557 assert(f);
2558 assert(fds);
2559
2560 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2561 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2562 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2563
2564 if (s->control_pid > 0)
2565 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2566
2567 if (s->main_pid_known && s->main_pid > 0)
2568 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2569
2570 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2571
2572 if (s->status_text)
2573 unit_serialize_item(u, f, "status-text", s->status_text);
2574
2575 /* FIXME: There's a minor uncleanliness here: if there are
2576 * multiple commands attached here, we will start from the
2577 * first one again */
2578 if (s->control_command_id >= 0)
2579 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2580
2581 if (s->socket_fd >= 0) {
2582 int copy;
2583
2584 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2585 return copy;
2586
2587 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2588 }
2589
2590 if (s->main_exec_status.pid > 0) {
2591 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2592 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2593 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2594
2595 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2596 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2597 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2598 }
2599 }
2600 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2601 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2602
2603 return 0;
2604}
2605
2606static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2607 Service *s = SERVICE(u);
2608
2609 assert(u);
2610 assert(key);
2611 assert(value);
2612 assert(fds);
2613
2614 if (streq(key, "state")) {
2615 ServiceState state;
2616
2617 if ((state = service_state_from_string(value)) < 0)
2618 log_debug("Failed to parse state value %s", value);
2619 else
2620 s->deserialized_state = state;
2621 } else if (streq(key, "result")) {
2622 ServiceResult f;
2623
2624 f = service_result_from_string(value);
2625 if (f < 0)
2626 log_debug("Failed to parse result value %s", value);
2627 else if (f != SERVICE_SUCCESS)
2628 s->result = f;
2629
2630 } else if (streq(key, "reload-result")) {
2631 ServiceResult f;
2632
2633 f = service_result_from_string(value);
2634 if (f < 0)
2635 log_debug("Failed to parse reload result value %s", value);
2636 else if (f != SERVICE_SUCCESS)
2637 s->reload_result = f;
2638
2639 } else if (streq(key, "control-pid")) {
2640 pid_t pid;
2641
2642 if (parse_pid(value, &pid) < 0)
2643 log_debug("Failed to parse control-pid value %s", value);
2644 else
2645 s->control_pid = pid;
2646 } else if (streq(key, "main-pid")) {
2647 pid_t pid;
2648
2649 if (parse_pid(value, &pid) < 0)
2650 log_debug("Failed to parse main-pid value %s", value);
2651 else
2652 service_set_main_pid(s, (pid_t) pid);
2653 } else if (streq(key, "main-pid-known")) {
2654 int b;
2655
2656 if ((b = parse_boolean(value)) < 0)
2657 log_debug("Failed to parse main-pid-known value %s", value);
2658 else
2659 s->main_pid_known = b;
2660 } else if (streq(key, "status-text")) {
2661 char *t;
2662
2663 if ((t = strdup(value))) {
2664 free(s->status_text);
2665 s->status_text = t;
2666 }
2667
2668 } else if (streq(key, "control-command")) {
2669 ServiceExecCommand id;
2670
2671 if ((id = service_exec_command_from_string(value)) < 0)
2672 log_debug("Failed to parse exec-command value %s", value);
2673 else {
2674 s->control_command_id = id;
2675 s->control_command = s->exec_command[id];
2676 }
2677 } else if (streq(key, "socket-fd")) {
2678 int fd;
2679
2680 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2681 log_debug("Failed to parse socket-fd value %s", value);
2682 else {
2683
2684 if (s->socket_fd >= 0)
2685 close_nointr_nofail(s->socket_fd);
2686 s->socket_fd = fdset_remove(fds, fd);
2687 }
2688 } else if (streq(key, "main-exec-status-pid")) {
2689 pid_t pid;
2690
2691 if (parse_pid(value, &pid) < 0)
2692 log_debug("Failed to parse main-exec-status-pid value %s", value);
2693 else
2694 s->main_exec_status.pid = pid;
2695 } else if (streq(key, "main-exec-status-code")) {
2696 int i;
2697
2698 if (safe_atoi(value, &i) < 0)
2699 log_debug("Failed to parse main-exec-status-code value %s", value);
2700 else
2701 s->main_exec_status.code = i;
2702 } else if (streq(key, "main-exec-status-status")) {
2703 int i;
2704
2705 if (safe_atoi(value, &i) < 0)
2706 log_debug("Failed to parse main-exec-status-status value %s", value);
2707 else
2708 s->main_exec_status.status = i;
2709 } else if (streq(key, "main-exec-status-start"))
2710 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2711 else if (streq(key, "main-exec-status-exit"))
2712 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2713 else if (streq(key, "watchdog-timestamp"))
2714 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2715 else
2716 log_debug("Unknown serialization key '%s'", key);
2717
2718 return 0;
2719}
2720
2721static UnitActiveState service_active_state(Unit *u) {
2722 const UnitActiveState *table;
2723
2724 assert(u);
2725
2726 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2727
2728 return table[SERVICE(u)->state];
2729}
2730
2731static const char *service_sub_state_to_string(Unit *u) {
2732 assert(u);
2733
2734 return service_state_to_string(SERVICE(u)->state);
2735}
2736
2737static bool service_check_gc(Unit *u) {
2738 Service *s = SERVICE(u);
2739
2740 assert(s);
2741
2742 /* Never clean up services that still have a process around,
2743 * even if the service is formally dead. */
2744 if (cgroup_good(s) > 0 ||
2745 main_pid_good(s) > 0 ||
2746 control_pid_good(s) > 0)
2747 return true;
2748
2749#ifdef HAVE_SYSV_COMPAT
2750 if (s->is_sysv)
2751 return true;
2752#endif
2753
2754 return false;
2755}
2756
2757static bool service_check_snapshot(Unit *u) {
2758 Service *s = SERVICE(u);
2759
2760 assert(s);
2761
2762 return !s->got_socket_fd;
2763}
2764
2765static int service_retry_pid_file(Service *s) {
2766 int r;
2767
2768 assert(s->pid_file);
2769 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2770
2771 r = service_load_pid_file(s, false);
2772 if (r < 0)
2773 return r;
2774
2775 service_unwatch_pid_file(s);
2776
2777 service_enter_running(s, SERVICE_SUCCESS);
2778 return 0;
2779}
2780
2781static int service_watch_pid_file(Service *s) {
2782 int r;
2783
2784 log_debug("Setting watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
2785 r = path_spec_watch(s->pid_file_pathspec, UNIT(s));
2786 if (r < 0)
2787 goto fail;
2788
2789 /* the pidfile might have appeared just before we set the watch */
2790 service_retry_pid_file(s);
2791
2792 return 0;
2793fail:
2794 log_error("Failed to set a watch for %s's PID file %s: %s",
2795 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2796 service_unwatch_pid_file(s);
2797 return r;
2798}
2799
2800static int service_demand_pid_file(Service *s) {
2801 PathSpec *ps;
2802
2803 assert(s->pid_file);
2804 assert(!s->pid_file_pathspec);
2805
2806 ps = new0(PathSpec, 1);
2807 if (!ps)
2808 return -ENOMEM;
2809
2810 ps->path = strdup(s->pid_file);
2811 if (!ps->path) {
2812 free(ps);
2813 return -ENOMEM;
2814 }
2815
2816 path_kill_slashes(ps->path);
2817
2818 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2819 * keep their PID file open all the time. */
2820 ps->type = PATH_MODIFIED;
2821 ps->inotify_fd = -1;
2822
2823 s->pid_file_pathspec = ps;
2824
2825 return service_watch_pid_file(s);
2826}
2827
2828static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
2829 Service *s = SERVICE(u);
2830
2831 assert(s);
2832 assert(fd >= 0);
2833 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2834 assert(s->pid_file_pathspec);
2835 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2836
2837 log_debug("inotify event for %s", u->id);
2838
2839 if (path_spec_fd_event(s->pid_file_pathspec, events) < 0)
2840 goto fail;
2841
2842 if (service_retry_pid_file(s) == 0)
2843 return;
2844
2845 if (service_watch_pid_file(s) < 0)
2846 goto fail;
2847
2848 return;
2849fail:
2850 service_unwatch_pid_file(s);
2851 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2852}
2853
2854static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2855 Service *s = SERVICE(u);
2856 ServiceResult f;
2857
2858 assert(s);
2859 assert(pid >= 0);
2860
2861 if (UNIT(s)->fragment_path ? is_clean_exit(code, status) : is_clean_exit_lsb(code, status))
2862 f = SERVICE_SUCCESS;
2863 else if (code == CLD_EXITED)
2864 f = SERVICE_FAILURE_EXIT_CODE;
2865 else if (code == CLD_KILLED)
2866 f = SERVICE_FAILURE_SIGNAL;
2867 else if (code == CLD_DUMPED)
2868 f = SERVICE_FAILURE_CORE_DUMP;
2869 else
2870 assert_not_reached("Unknown code");
2871
2872 if (s->main_pid == pid) {
2873 /* Forking services may occasionally move to a new PID.
2874 * As long as they update the PID file before exiting the old
2875 * PID, they're fine. */
2876 if (service_load_pid_file(s, false) == 0)
2877 return;
2878
2879 s->main_pid = 0;
2880 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2881
2882 /* If this is not a forking service than the main
2883 * process got started and hence we copy the exit
2884 * status so that it is recorded both as main and as
2885 * control process exit status */
2886 if (s->main_command) {
2887 s->main_command->exec_status = s->main_exec_status;
2888
2889 if (s->main_command->ignore)
2890 f = SERVICE_SUCCESS;
2891 }
2892
2893 log_full(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2894 "%s: main process exited, code=%s, status=%i", u->id, sigchld_code_to_string(code), status);
2895
2896 if (f != SERVICE_SUCCESS)
2897 s->result = f;
2898
2899 if (s->main_command &&
2900 s->main_command->command_next &&
2901 f == SERVICE_SUCCESS) {
2902
2903 /* There is another command to *
2904 * execute, so let's do that. */
2905
2906 log_debug("%s running next main command for state %s", u->id, service_state_to_string(s->state));
2907 service_run_next_main(s);
2908
2909 } else {
2910
2911 /* The service exited, so the service is officially
2912 * gone. */
2913 s->main_command = NULL;
2914
2915 switch (s->state) {
2916
2917 case SERVICE_START_POST:
2918 case SERVICE_RELOAD:
2919 case SERVICE_STOP:
2920 /* Need to wait until the operation is
2921 * done */
2922 break;
2923
2924 case SERVICE_START:
2925 if (s->type == SERVICE_ONESHOT) {
2926 /* This was our main goal, so let's go on */
2927 if (f == SERVICE_SUCCESS)
2928 service_enter_start_post(s);
2929 else
2930 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
2931 break;
2932 } else {
2933 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2934
2935 /* Fall through */
2936 }
2937
2938 case SERVICE_RUNNING:
2939 service_enter_running(s, f);
2940 break;
2941
2942 case SERVICE_STOP_SIGTERM:
2943 case SERVICE_STOP_SIGKILL:
2944
2945 if (!control_pid_good(s))
2946 service_enter_stop_post(s, f);
2947
2948 /* If there is still a control process, wait for that first */
2949 break;
2950
2951 default:
2952 assert_not_reached("Uh, main process died at wrong time.");
2953 }
2954 }
2955
2956 } else if (s->control_pid == pid) {
2957
2958 s->control_pid = 0;
2959
2960 if (s->control_command) {
2961 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
2962
2963 if (s->control_command->ignore)
2964 f = SERVICE_SUCCESS;
2965 }
2966
2967 log_full(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2968 "%s: control process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
2969
2970 if (f != SERVICE_SUCCESS)
2971 s->result = f;
2972
2973 /* Immediately get rid of the cgroup, so that the
2974 * kernel doesn't delay the cgroup empty messages for
2975 * the service cgroup any longer than necessary */
2976 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2977
2978 if (s->control_command &&
2979 s->control_command->command_next &&
2980 f == SERVICE_SUCCESS) {
2981
2982 /* There is another command to *
2983 * execute, so let's do that. */
2984
2985 log_debug("%s running next control command for state %s", u->id, service_state_to_string(s->state));
2986 service_run_next_control(s);
2987
2988 } else {
2989 /* No further commands for this step, so let's
2990 * figure out what to do next */
2991
2992 s->control_command = NULL;
2993 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2994
2995 log_debug("%s got final SIGCHLD for state %s", u->id, service_state_to_string(s->state));
2996
2997 switch (s->state) {
2998
2999 case SERVICE_START_PRE:
3000 if (f == SERVICE_SUCCESS)
3001 service_enter_start(s);
3002 else
3003 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3004 break;
3005
3006 case SERVICE_START:
3007 assert(s->type == SERVICE_FORKING);
3008
3009 if (f != SERVICE_SUCCESS) {
3010 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3011 break;
3012 }
3013
3014 if (s->pid_file) {
3015 bool has_start_post;
3016 int r;
3017
3018 /* Let's try to load the pid file here if we can.
3019 * The PID file might actually be created by a START_POST
3020 * script. In that case don't worry if the loading fails. */
3021
3022 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3023 r = service_load_pid_file(s, !has_start_post);
3024 if (!has_start_post && r < 0) {
3025 r = service_demand_pid_file(s);
3026 if (r < 0 || !cgroup_good(s))
3027 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3028 break;
3029 }
3030 } else
3031 service_search_main_pid(s);
3032
3033 service_enter_start_post(s);
3034 break;
3035
3036 case SERVICE_START_POST:
3037 if (f != SERVICE_SUCCESS) {
3038 service_enter_stop(s, f);
3039 break;
3040 }
3041
3042 if (s->pid_file) {
3043 int r;
3044
3045 r = service_load_pid_file(s, true);
3046 if (r < 0) {
3047 r = service_demand_pid_file(s);
3048 if (r < 0 || !cgroup_good(s))
3049 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3050 break;
3051 }
3052 } else
3053 service_search_main_pid(s);
3054
3055 service_enter_running(s, SERVICE_SUCCESS);
3056 break;
3057
3058 case SERVICE_RELOAD:
3059 if (f == SERVICE_SUCCESS) {
3060 service_load_pid_file(s, true);
3061 service_search_main_pid(s);
3062 }
3063
3064 s->reload_result = f;
3065 service_enter_running(s, SERVICE_SUCCESS);
3066 break;
3067
3068 case SERVICE_STOP:
3069 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3070 break;
3071
3072 case SERVICE_STOP_SIGTERM:
3073 case SERVICE_STOP_SIGKILL:
3074 if (main_pid_good(s) <= 0)
3075 service_enter_stop_post(s, f);
3076
3077 /* If there is still a service
3078 * process around, wait until
3079 * that one quit, too */
3080 break;
3081
3082 case SERVICE_STOP_POST:
3083 case SERVICE_FINAL_SIGTERM:
3084 case SERVICE_FINAL_SIGKILL:
3085 service_enter_dead(s, f, true);
3086 break;
3087
3088 default:
3089 assert_not_reached("Uh, control process died at wrong time.");
3090 }
3091 }
3092 }
3093
3094 /* Notify clients about changed exit status */
3095 unit_add_to_dbus_queue(u);
3096}
3097
3098static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
3099 Service *s = SERVICE(u);
3100
3101 assert(s);
3102 assert(elapsed == 1);
3103
3104 if (w == &s->watchdog_watch) {
3105 service_handle_watchdog(s);
3106 return;
3107 }
3108
3109 assert(w == &s->timer_watch);
3110
3111 switch (s->state) {
3112
3113 case SERVICE_START_PRE:
3114 case SERVICE_START:
3115 log_warning("%s operation timed out. Terminating.", u->id);
3116 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3117 break;
3118
3119 case SERVICE_START_POST:
3120 log_warning("%s operation timed out. Stopping.", u->id);
3121 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3122 break;
3123
3124 case SERVICE_RELOAD:
3125 log_warning("%s operation timed out. Stopping.", u->id);
3126 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3127 service_enter_running(s, SERVICE_SUCCESS);
3128 break;
3129
3130 case SERVICE_STOP:
3131 log_warning("%s stopping timed out. Terminating.", u->id);
3132 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3133 break;
3134
3135 case SERVICE_STOP_SIGTERM:
3136 if (s->exec_context.send_sigkill) {
3137 log_warning("%s stopping timed out. Killing.", u->id);
3138 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3139 } else {
3140 log_warning("%s stopping timed out. Skipping SIGKILL.", u->id);
3141 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3142 }
3143
3144 break;
3145
3146 case SERVICE_STOP_SIGKILL:
3147 /* Uh, we sent a SIGKILL and it is still not gone?
3148 * Must be something we cannot kill, so let's just be
3149 * weirded out and continue */
3150
3151 log_warning("%s still around after SIGKILL. Ignoring.", u->id);
3152 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3153 break;
3154
3155 case SERVICE_STOP_POST:
3156 log_warning("%s stopping timed out (2). Terminating.", u->id);
3157 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3158 break;
3159
3160 case SERVICE_FINAL_SIGTERM:
3161 if (s->exec_context.send_sigkill) {
3162 log_warning("%s stopping timed out (2). Killing.", u->id);
3163 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3164 } else {
3165 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->id);
3166 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3167 }
3168
3169 break;
3170
3171 case SERVICE_FINAL_SIGKILL:
3172 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->id);
3173 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3174 break;
3175
3176 case SERVICE_AUTO_RESTART:
3177 log_info("%s holdoff time over, scheduling restart.", u->id);
3178 service_enter_restart(s);
3179 break;
3180
3181 default:
3182 assert_not_reached("Timeout at wrong time.");
3183 }
3184}
3185
3186static void service_cgroup_notify_event(Unit *u) {
3187 Service *s = SERVICE(u);
3188
3189 assert(u);
3190
3191 log_debug("%s: cgroup is empty", u->id);
3192
3193 switch (s->state) {
3194
3195 /* Waiting for SIGCHLD is usually more interesting,
3196 * because it includes return codes/signals. Which is
3197 * why we ignore the cgroup events for most cases,
3198 * except when we don't know pid which to expect the
3199 * SIGCHLD for. */
3200
3201 case SERVICE_START:
3202 case SERVICE_START_POST:
3203 /* If we were hoping for the daemon to write its PID file,
3204 * we can give up now. */
3205 if (s->pid_file_pathspec) {
3206 log_warning("%s never wrote its PID file. Failing.", UNIT(s)->id);
3207 service_unwatch_pid_file(s);
3208 if (s->state == SERVICE_START)
3209 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3210 else
3211 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3212 }
3213 break;
3214
3215 case SERVICE_RUNNING:
3216 /* service_enter_running() will figure out what to do */
3217 service_enter_running(s, SERVICE_SUCCESS);
3218 break;
3219
3220 case SERVICE_STOP_SIGTERM:
3221 case SERVICE_STOP_SIGKILL:
3222
3223 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3224 service_enter_stop_post(s, SERVICE_SUCCESS);
3225
3226 break;
3227
3228 case SERVICE_FINAL_SIGTERM:
3229 case SERVICE_FINAL_SIGKILL:
3230 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3231 service_enter_dead(s, SERVICE_SUCCESS, true);
3232
3233 break;
3234
3235 default:
3236 ;
3237 }
3238}
3239
3240static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3241 Service *s = SERVICE(u);
3242 const char *e;
3243
3244 assert(u);
3245
3246 if (s->notify_access == NOTIFY_NONE) {
3247 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
3248 u->id, (unsigned long) pid);
3249 return;
3250 }
3251
3252 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3253 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
3254 u->id, (unsigned long) pid, (unsigned long) s->main_pid);
3255 return;
3256 }
3257
3258 log_debug("%s: Got message", u->id);
3259
3260 /* Interpret MAINPID= */
3261 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3262 (s->state == SERVICE_START ||
3263 s->state == SERVICE_START_POST ||
3264 s->state == SERVICE_RUNNING ||
3265 s->state == SERVICE_RELOAD)) {
3266
3267 if (parse_pid(e + 8, &pid) < 0)
3268 log_warning("Failed to parse notification message %s", e);
3269 else {
3270 log_debug("%s: got %s", u->id, e);
3271 service_set_main_pid(s, pid);
3272 }
3273 }
3274
3275 /* Interpret READY= */
3276 if (s->type == SERVICE_NOTIFY &&
3277 s->state == SERVICE_START &&
3278 strv_find(tags, "READY=1")) {
3279 log_debug("%s: got READY=1", u->id);
3280
3281 service_enter_start_post(s);
3282 }
3283
3284 /* Interpret STATUS= */
3285 e = strv_find_prefix(tags, "STATUS=");
3286 if (e) {
3287 char *t;
3288
3289 if (e[7]) {
3290
3291 if (!utf8_is_valid(e+7)) {
3292 log_warning("Status message in notification is not UTF-8 clean.");
3293 return;
3294 }
3295
3296 t = strdup(e+7);
3297 if (!t) {
3298 log_error("Failed to allocate string.");
3299 return;
3300 }
3301
3302 log_debug("%s: got %s", u->id, e);
3303
3304 free(s->status_text);
3305 s->status_text = t;
3306 } else {
3307 free(s->status_text);
3308 s->status_text = NULL;
3309 }
3310
3311 }
3312 if (strv_find(tags, "WATCHDOG=1")) {
3313 log_debug("%s: got WATCHDOG=1", u->id);
3314 service_reset_watchdog(s);
3315 }
3316
3317 /* Notify clients about changed status or main pid */
3318 unit_add_to_dbus_queue(u);
3319}
3320
3321#ifdef HAVE_SYSV_COMPAT
3322
3323#ifdef TARGET_SUSE
3324static void sysv_facility_in_insserv_conf(Manager *mgr) {
3325 FILE *f=NULL;
3326 int r;
3327
3328 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3329 r = errno == ENOENT ? 0 : -errno;
3330 goto finish;
3331 }
3332
3333 while (!feof(f)) {
3334 char l[LINE_MAX], *t;
3335 char **parsed = NULL;
3336
3337 if (!fgets(l, sizeof(l), f)) {
3338 if (feof(f))
3339 break;
3340
3341 r = -errno;
3342 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3343 goto finish;
3344 }
3345
3346 t = strstrip(l);
3347 if (*t != '$' && *t != '<')
3348 continue;
3349
3350 parsed = strv_split(t,WHITESPACE);
3351 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3352 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3353 char *facility;
3354 Unit *u;
3355 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3356 continue;
3357 if ((u = manager_get_unit(mgr, facility)) && (u->type == UNIT_TARGET)) {
3358 UnitDependency e;
3359 char *dep = NULL, *name, **j;
3360
3361 STRV_FOREACH (j, parsed+1) {
3362 if (*j[0]=='+') {
3363 e = UNIT_WANTS;
3364 name = *j+1;
3365 }
3366 else {
3367 e = UNIT_REQUIRES;
3368 name = *j;
3369 }
3370 if (sysv_translate_facility(name, NULL, &dep) < 0)
3371 continue;
3372
3373 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3374 free(dep);
3375 }
3376 }
3377 free(facility);
3378 }
3379 strv_free(parsed);
3380 }
3381finish:
3382 if (f)
3383 fclose(f);
3384
3385}
3386#endif
3387
3388static int service_enumerate(Manager *m) {
3389 char **p;
3390 unsigned i;
3391 DIR *d = NULL;
3392 char *path = NULL, *fpath = NULL, *name = NULL;
3393 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3394 Unit *service;
3395 Iterator j;
3396 int r;
3397
3398 assert(m);
3399
3400 if (m->running_as != MANAGER_SYSTEM)
3401 return 0;
3402
3403 zero(runlevel_services);
3404
3405 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3406 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3407 struct dirent *de;
3408
3409 free(path);
3410 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3411 if (!path) {
3412 r = -ENOMEM;
3413 goto finish;
3414 }
3415
3416 if (d)
3417 closedir(d);
3418
3419 if (!(d = opendir(path))) {
3420 if (errno != ENOENT)
3421 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3422
3423 continue;
3424 }
3425
3426 while ((de = readdir(d))) {
3427 int a, b;
3428
3429 if (ignore_file(de->d_name))
3430 continue;
3431
3432 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3433 continue;
3434
3435 if (strlen(de->d_name) < 4)
3436 continue;
3437
3438 a = undecchar(de->d_name[1]);
3439 b = undecchar(de->d_name[2]);
3440
3441 if (a < 0 || b < 0)
3442 continue;
3443
3444 free(fpath);
3445 fpath = strjoin(path, "/", de->d_name, NULL);
3446 if (!fpath) {
3447 r = -ENOMEM;
3448 goto finish;
3449 }
3450
3451 if (access(fpath, X_OK) < 0) {
3452
3453 if (errno != ENOENT)
3454 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3455
3456 continue;
3457 }
3458
3459 free(name);
3460 if (!(name = sysv_translate_name(de->d_name + 3))) {
3461 r = -ENOMEM;
3462 goto finish;
3463 }
3464
3465 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3466 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3467 continue;
3468 }
3469
3470 if (de->d_name[0] == 'S') {
3471
3472 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3473 SERVICE(service)->sysv_start_priority_from_rcnd =
3474 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3475
3476 SERVICE(service)->sysv_enabled = true;
3477 }
3478
3479 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3480 goto finish;
3481
3482 if ((r = set_put(runlevel_services[i], service)) < 0)
3483 goto finish;
3484
3485 } else if (de->d_name[0] == 'K' &&
3486 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3487 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3488
3489 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3490 goto finish;
3491
3492 if ((r = set_put(shutdown_services, service)) < 0)
3493 goto finish;
3494 }
3495 }
3496 }
3497
3498 /* Now we loaded all stubs and are aware of the lowest
3499 start-up priority for all services, not let's actually load
3500 the services, this will also tell us which services are
3501 actually native now */
3502 manager_dispatch_load_queue(m);
3503
3504 /* If this is a native service, rely on native ways to pull in
3505 * a service, don't pull it in via sysv rcN.d links. */
3506 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3507 SET_FOREACH(service, runlevel_services[i], j) {
3508 service = unit_follow_merge(service);
3509
3510 if (service->fragment_path)
3511 continue;
3512
3513 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3514 goto finish;
3515 }
3516
3517 /* We honour K links only for halt/reboot. For the normal
3518 * runlevels we assume the stop jobs will be implicitly added
3519 * by the core logic. Also, we don't really distinguish here
3520 * between the runlevels 0 and 6 and just add them to the
3521 * special shutdown target. On SUSE the boot.d/ runlevel is
3522 * also used for shutdown, so we add links for that too to the
3523 * shutdown target.*/
3524 SET_FOREACH(service, shutdown_services, j) {
3525 service = unit_follow_merge(service);
3526
3527 if (service->fragment_path)
3528 continue;
3529
3530 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3531 goto finish;
3532 }
3533
3534 r = 0;
3535
3536#ifdef TARGET_SUSE
3537 sysv_facility_in_insserv_conf (m);
3538#endif
3539
3540finish:
3541 free(path);
3542 free(fpath);
3543 free(name);
3544
3545 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3546 set_free(runlevel_services[i]);
3547 set_free(shutdown_services);
3548
3549 if (d)
3550 closedir(d);
3551
3552 return r;
3553}
3554#endif
3555
3556static void service_bus_name_owner_change(
3557 Unit *u,
3558 const char *name,
3559 const char *old_owner,
3560 const char *new_owner) {
3561
3562 Service *s = SERVICE(u);
3563
3564 assert(s);
3565 assert(name);
3566
3567 assert(streq(s->bus_name, name));
3568 assert(old_owner || new_owner);
3569
3570 if (old_owner && new_owner)
3571 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->id, name, old_owner, new_owner);
3572 else if (old_owner)
3573 log_debug("%s's D-Bus name %s no longer registered by %s", u->id, name, old_owner);
3574 else
3575 log_debug("%s's D-Bus name %s now registered by %s", u->id, name, new_owner);
3576
3577 s->bus_name_good = !!new_owner;
3578
3579 if (s->type == SERVICE_DBUS) {
3580
3581 /* service_enter_running() will figure out what to
3582 * do */
3583 if (s->state == SERVICE_RUNNING)
3584 service_enter_running(s, SERVICE_SUCCESS);
3585 else if (s->state == SERVICE_START && new_owner)
3586 service_enter_start_post(s);
3587
3588 } else if (new_owner &&
3589 s->main_pid <= 0 &&
3590 (s->state == SERVICE_START ||
3591 s->state == SERVICE_START_POST ||
3592 s->state == SERVICE_RUNNING ||
3593 s->state == SERVICE_RELOAD)) {
3594
3595 /* Try to acquire PID from bus service */
3596 log_debug("Trying to acquire PID from D-Bus name...");
3597
3598 bus_query_pid(u->manager, name);
3599 }
3600}
3601
3602static void service_bus_query_pid_done(
3603 Unit *u,
3604 const char *name,
3605 pid_t pid) {
3606
3607 Service *s = SERVICE(u);
3608
3609 assert(s);
3610 assert(name);
3611
3612 log_debug("%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3613
3614 if (s->main_pid <= 0 &&
3615 (s->state == SERVICE_START ||
3616 s->state == SERVICE_START_POST ||
3617 s->state == SERVICE_RUNNING ||
3618 s->state == SERVICE_RELOAD))
3619 service_set_main_pid(s, pid);
3620}
3621
3622int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3623
3624 assert(s);
3625 assert(fd >= 0);
3626
3627 /* This is called by the socket code when instantiating a new
3628 * service for a stream socket and the socket needs to be
3629 * configured. */
3630
3631 if (UNIT(s)->load_state != UNIT_LOADED)
3632 return -EINVAL;
3633
3634 if (s->socket_fd >= 0)
3635 return -EBUSY;
3636
3637 if (s->state != SERVICE_DEAD)
3638 return -EAGAIN;
3639
3640 s->socket_fd = fd;
3641 s->got_socket_fd = true;
3642
3643 unit_ref_set(&s->accept_socket, UNIT(sock));
3644
3645 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3646}
3647
3648static void service_reset_failed(Unit *u) {
3649 Service *s = SERVICE(u);
3650
3651 assert(s);
3652
3653 if (s->state == SERVICE_FAILED)
3654 service_set_state(s, SERVICE_DEAD);
3655
3656 s->result = SERVICE_SUCCESS;
3657 s->reload_result = SERVICE_SUCCESS;
3658
3659 RATELIMIT_RESET(s->start_limit);
3660}
3661
3662static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3663 Service *s = SERVICE(u);
3664 int r = 0;
3665 Set *pid_set = NULL;
3666
3667 assert(s);
3668
3669 if (s->main_pid <= 0 && who == KILL_MAIN) {
3670 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3671 return -ESRCH;
3672 }
3673
3674 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3675 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3676 return -ESRCH;
3677 }
3678
3679 if (who == KILL_CONTROL || who == KILL_ALL)
3680 if (s->control_pid > 0)
3681 if (kill(s->control_pid, signo) < 0)
3682 r = -errno;
3683
3684 if (who == KILL_MAIN || who == KILL_ALL)
3685 if (s->main_pid > 0)
3686 if (kill(s->main_pid, signo) < 0)
3687 r = -errno;
3688
3689 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
3690 int q;
3691
3692 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3693 return -ENOMEM;
3694
3695 /* Exclude the control/main pid from being killed via the cgroup */
3696 if (s->control_pid > 0)
3697 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3698 r = q;
3699 goto finish;
3700 }
3701
3702 if (s->main_pid > 0)
3703 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3704 r = q;
3705 goto finish;
3706 }
3707 q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, false, pid_set, NULL);
3708 if (q < 0)
3709 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3710 r = q;
3711 }
3712
3713finish:
3714 if (pid_set)
3715 set_free(pid_set);
3716
3717 return r;
3718}
3719
3720static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3721 [SERVICE_DEAD] = "dead",
3722 [SERVICE_START_PRE] = "start-pre",
3723 [SERVICE_START] = "start",
3724 [SERVICE_START_POST] = "start-post",
3725 [SERVICE_RUNNING] = "running",
3726 [SERVICE_EXITED] = "exited",
3727 [SERVICE_RELOAD] = "reload",
3728 [SERVICE_STOP] = "stop",
3729 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3730 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3731 [SERVICE_STOP_POST] = "stop-post",
3732 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3733 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3734 [SERVICE_FAILED] = "failed",
3735 [SERVICE_AUTO_RESTART] = "auto-restart",
3736};
3737
3738DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3739
3740static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3741 [SERVICE_RESTART_NO] = "no",
3742 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3743 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3744 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3745 [SERVICE_RESTART_ALWAYS] = "always"
3746};
3747
3748DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3749
3750static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3751 [SERVICE_SIMPLE] = "simple",
3752 [SERVICE_FORKING] = "forking",
3753 [SERVICE_ONESHOT] = "oneshot",
3754 [SERVICE_DBUS] = "dbus",
3755 [SERVICE_NOTIFY] = "notify",
3756 [SERVICE_IDLE] = "idle"
3757};
3758
3759DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3760
3761static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3762 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3763 [SERVICE_EXEC_START] = "ExecStart",
3764 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3765 [SERVICE_EXEC_RELOAD] = "ExecReload",
3766 [SERVICE_EXEC_STOP] = "ExecStop",
3767 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3768};
3769
3770DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3771
3772static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3773 [NOTIFY_NONE] = "none",
3774 [NOTIFY_MAIN] = "main",
3775 [NOTIFY_ALL] = "all"
3776};
3777
3778DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3779
3780static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3781 [SERVICE_SUCCESS] = "success",
3782 [SERVICE_FAILURE_RESOURCES] = "resources",
3783 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3784 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3785 [SERVICE_FAILURE_SIGNAL] = "signal",
3786 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3787 [SERVICE_FAILURE_WATCHDOG] = "watchdog"
3788};
3789
3790DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3791
3792static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3793 [SERVICE_START_LIMIT_NONE] = "none",
3794 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3795 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3796 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3797};
3798DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3799
3800const UnitVTable service_vtable = {
3801 .object_size = sizeof(Service),
3802 .sections =
3803 "Unit\0"
3804 "Service\0"
3805 "Install\0",
3806
3807 .init = service_init,
3808 .done = service_done,
3809 .load = service_load,
3810
3811 .coldplug = service_coldplug,
3812
3813 .dump = service_dump,
3814
3815 .start = service_start,
3816 .stop = service_stop,
3817 .reload = service_reload,
3818
3819 .can_reload = service_can_reload,
3820
3821 .kill = service_kill,
3822
3823 .serialize = service_serialize,
3824 .deserialize_item = service_deserialize_item,
3825
3826 .active_state = service_active_state,
3827 .sub_state_to_string = service_sub_state_to_string,
3828
3829 .check_gc = service_check_gc,
3830 .check_snapshot = service_check_snapshot,
3831
3832 .sigchld_event = service_sigchld_event,
3833 .timer_event = service_timer_event,
3834 .fd_event = service_fd_event,
3835
3836 .reset_failed = service_reset_failed,
3837
3838 .cgroup_notify_empty = service_cgroup_notify_event,
3839 .notify_message = service_notify_message,
3840
3841 .bus_name_owner_change = service_bus_name_owner_change,
3842 .bus_query_pid_done = service_bus_query_pid_done,
3843
3844 .bus_interface = "org.freedesktop.systemd1.Service",
3845 .bus_message_handler = bus_service_message_handler,
3846 .bus_invalidating_properties = bus_service_invalidating_properties,
3847
3848#ifdef HAVE_SYSV_COMPAT
3849 .enumerate = service_enumerate,
3850#endif
3851 .status_message_formats = {
3852 .starting_stopping = {
3853 [0] = "Starting %s...",
3854 [1] = "Stopping %s...",
3855 },
3856 .finished_start_job = {
3857 [JOB_DONE] = "Started %s.",
3858 [JOB_FAILED] = "Failed to start %s.",
3859 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3860 [JOB_TIMEOUT] = "Timed out starting %s.",
3861 },
3862 .finished_stop_job = {
3863 [JOB_DONE] = "Stopped %s.",
3864 [JOB_FAILED] = "Stopped (with error) %s.",
3865 [JOB_TIMEOUT] = "Timed out stopping %s.",
3866 },
3867 },
3868};
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