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service: fix incorrect argument
[thirdparty/systemd.git] / src / core / service.c
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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 = join(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 = join(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 = join(*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 = join(*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 = join(*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 if (allow_restart &&
1892 !s->forbid_restart &&
1893 (s->restart == SERVICE_RESTART_ALWAYS ||
1894 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1895 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1896 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1897 s->result == SERVICE_FAILURE_CORE_DUMP)))) {
1898
1899 r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch);
1900 if (r < 0)
1901 goto fail;
1902
1903 service_set_state(s, SERVICE_AUTO_RESTART);
1904 } else
1905 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1906
1907 s->forbid_restart = false;
1908
1909 return;
1910
1911fail:
1912 log_warning("%s failed to run install restart timer: %s", UNIT(s)->id, strerror(-r));
1913 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1914}
1915
1916static void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
1917
1918static void service_enter_stop_post(Service *s, ServiceResult f) {
1919 int r;
1920 assert(s);
1921
1922 if (f != SERVICE_SUCCESS)
1923 s->result = f;
1924
1925 service_unwatch_control_pid(s);
1926
1927 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1928 s->control_command_id = SERVICE_EXEC_STOP_POST;
1929
1930 r = service_spawn(s,
1931 s->control_command,
1932 true,
1933 false,
1934 !s->permissions_start_only,
1935 !s->root_directory_start_only,
1936 true,
1937 false,
1938 true,
1939 &s->control_pid);
1940 if (r < 0)
1941 goto fail;
1942
1943
1944 service_set_state(s, SERVICE_STOP_POST);
1945 } else
1946 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
1947
1948 return;
1949
1950fail:
1951 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r));
1952 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1953}
1954
1955static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1956 int r;
1957 Set *pid_set = NULL;
1958 bool wait_for_exit = false;
1959
1960 assert(s);
1961
1962 if (f != SERVICE_SUCCESS)
1963 s->result = f;
1964
1965 if (s->exec_context.kill_mode != KILL_NONE) {
1966 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1967
1968 if (s->main_pid > 0) {
1969 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
1970 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1971 else
1972 wait_for_exit = !s->main_pid_alien;
1973 }
1974
1975 if (s->control_pid > 0) {
1976 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1977 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1978 else
1979 wait_for_exit = true;
1980 }
1981
1982 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1983
1984 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1985 r = -ENOMEM;
1986 goto fail;
1987 }
1988
1989 /* Exclude the main/control pids from being killed via the cgroup */
1990 if (s->main_pid > 0)
1991 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1992 goto fail;
1993
1994 if (s->control_pid > 0)
1995 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1996 goto fail;
1997
1998 r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, false, pid_set, NULL);
1999 if (r < 0) {
2000 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
2001 log_warning("Failed to kill control group: %s", strerror(-r));
2002 } else if (r > 0)
2003 wait_for_exit = true;
2004
2005 set_free(pid_set);
2006 pid_set = NULL;
2007 }
2008 }
2009
2010 if (wait_for_exit) {
2011 if (s->timeout_usec > 0)
2012 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
2013 goto fail;
2014
2015 service_set_state(s, state);
2016 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2017 service_enter_stop_post(s, SERVICE_SUCCESS);
2018 else
2019 service_enter_dead(s, SERVICE_SUCCESS, true);
2020
2021 return;
2022
2023fail:
2024 log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
2025
2026 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2027 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
2028 else
2029 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2030
2031 if (pid_set)
2032 set_free(pid_set);
2033}
2034
2035static void service_enter_stop(Service *s, ServiceResult f) {
2036 int r;
2037
2038 assert(s);
2039
2040 if (f != SERVICE_SUCCESS)
2041 s->result = f;
2042
2043 service_unwatch_control_pid(s);
2044
2045 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
2046 s->control_command_id = SERVICE_EXEC_STOP;
2047
2048 r = service_spawn(s,
2049 s->control_command,
2050 true,
2051 false,
2052 !s->permissions_start_only,
2053 !s->root_directory_start_only,
2054 false,
2055 false,
2056 true,
2057 &s->control_pid);
2058 if (r < 0)
2059 goto fail;
2060
2061 service_set_state(s, SERVICE_STOP);
2062 } else
2063 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2064
2065 return;
2066
2067fail:
2068 log_warning("%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2069 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2070}
2071
2072static void service_enter_running(Service *s, ServiceResult f) {
2073 int main_pid_ok, cgroup_ok;
2074 assert(s);
2075
2076 if (f != SERVICE_SUCCESS)
2077 s->result = f;
2078
2079 main_pid_ok = main_pid_good(s);
2080 cgroup_ok = cgroup_good(s);
2081
2082 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2083 (s->bus_name_good || s->type != SERVICE_DBUS))
2084 service_set_state(s, SERVICE_RUNNING);
2085 else if (s->remain_after_exit)
2086 service_set_state(s, SERVICE_EXITED);
2087 else
2088 service_enter_stop(s, SERVICE_SUCCESS);
2089}
2090
2091static void service_enter_start_post(Service *s) {
2092 int r;
2093 assert(s);
2094
2095 service_unwatch_control_pid(s);
2096
2097 if (s->watchdog_usec > 0)
2098 service_reset_watchdog(s);
2099
2100 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
2101 s->control_command_id = SERVICE_EXEC_START_POST;
2102
2103 r = service_spawn(s,
2104 s->control_command,
2105 true,
2106 false,
2107 !s->permissions_start_only,
2108 !s->root_directory_start_only,
2109 false,
2110 false,
2111 true,
2112 &s->control_pid);
2113 if (r < 0)
2114 goto fail;
2115
2116 service_set_state(s, SERVICE_START_POST);
2117 } else
2118 service_enter_running(s, SERVICE_SUCCESS);
2119
2120 return;
2121
2122fail:
2123 log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2124 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2125}
2126
2127static void service_enter_start(Service *s) {
2128 pid_t pid;
2129 int r;
2130 ExecCommand *c;
2131
2132 assert(s);
2133
2134 assert(s->exec_command[SERVICE_EXEC_START]);
2135 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2136
2137 if (s->type == SERVICE_FORKING)
2138 service_unwatch_control_pid(s);
2139 else
2140 service_unwatch_main_pid(s);
2141
2142 /* We want to ensure that nobody leaks processes from
2143 * START_PRE here, so let's go on a killing spree, People
2144 * should not spawn long running processes from START_PRE. */
2145 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2146
2147 if (s->type == SERVICE_FORKING) {
2148 s->control_command_id = SERVICE_EXEC_START;
2149 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2150
2151 s->main_command = NULL;
2152 } else {
2153 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2154 s->control_command = NULL;
2155
2156 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2157 }
2158
2159 r = service_spawn(s,
2160 c,
2161 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2162 true,
2163 true,
2164 true,
2165 true,
2166 s->notify_access != NOTIFY_NONE,
2167 false,
2168 &pid);
2169 if (r < 0)
2170 goto fail;
2171
2172 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2173 /* For simple services we immediately start
2174 * the START_POST binaries. */
2175
2176 service_set_main_pid(s, pid);
2177 service_enter_start_post(s);
2178
2179 } else if (s->type == SERVICE_FORKING) {
2180
2181 /* For forking services we wait until the start
2182 * process exited. */
2183
2184 s->control_pid = pid;
2185 service_set_state(s, SERVICE_START);
2186
2187 } else if (s->type == SERVICE_ONESHOT ||
2188 s->type == SERVICE_DBUS ||
2189 s->type == SERVICE_NOTIFY) {
2190
2191 /* For oneshot services we wait until the start
2192 * process exited, too, but it is our main process. */
2193
2194 /* For D-Bus services we know the main pid right away,
2195 * but wait for the bus name to appear on the
2196 * bus. Notify services are similar. */
2197
2198 service_set_main_pid(s, pid);
2199 service_set_state(s, SERVICE_START);
2200 } else
2201 assert_not_reached("Unknown service type");
2202
2203 return;
2204
2205fail:
2206 log_warning("%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2207 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2208}
2209
2210static void service_enter_start_pre(Service *s) {
2211 int r;
2212
2213 assert(s);
2214
2215 service_unwatch_control_pid(s);
2216
2217 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2218
2219 /* Before we start anything, let's clear up what might
2220 * be left from previous runs. */
2221 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2222
2223 s->control_command_id = SERVICE_EXEC_START_PRE;
2224
2225 r = service_spawn(s,
2226 s->control_command,
2227 true,
2228 false,
2229 !s->permissions_start_only,
2230 !s->root_directory_start_only,
2231 true,
2232 false,
2233 true,
2234 &s->control_pid);
2235 if (r < 0)
2236 goto fail;
2237
2238 service_set_state(s, SERVICE_START_PRE);
2239 } else
2240 service_enter_start(s);
2241
2242 return;
2243
2244fail:
2245 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2246 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2247}
2248
2249static void service_enter_restart(Service *s) {
2250 int r;
2251 DBusError error;
2252
2253 assert(s);
2254 dbus_error_init(&error);
2255
2256 if (UNIT(s)->job) {
2257 log_info("Job pending for unit, delaying automatic restart.");
2258
2259 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2260 goto fail;
2261
2262 return;
2263 }
2264
2265 /* Any units that are bound to this service must also be
2266 * restarted. We use JOB_RESTART (instead of the more obvious
2267 * JOB_START) here so that those dependency jobs will be added
2268 * as well. */
2269 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2270 if (r < 0)
2271 goto fail;
2272
2273 log_debug("%s scheduled restart job.", UNIT(s)->id);
2274 return;
2275
2276fail:
2277 log_warning("%s failed to schedule restart job: %s", UNIT(s)->id, bus_error(&error, -r));
2278 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2279
2280 dbus_error_free(&error);
2281}
2282
2283static void service_enter_reload(Service *s) {
2284 int r;
2285
2286 assert(s);
2287
2288 service_unwatch_control_pid(s);
2289
2290 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2291 s->control_command_id = SERVICE_EXEC_RELOAD;
2292
2293 r = service_spawn(s,
2294 s->control_command,
2295 true,
2296 false,
2297 !s->permissions_start_only,
2298 !s->root_directory_start_only,
2299 false,
2300 false,
2301 true,
2302 &s->control_pid);
2303 if (r < 0)
2304 goto fail;
2305
2306 service_set_state(s, SERVICE_RELOAD);
2307 } else
2308 service_enter_running(s, SERVICE_SUCCESS);
2309
2310 return;
2311
2312fail:
2313 log_warning("%s failed to run 'reload' task: %s", UNIT(s)->id, strerror(-r));
2314 s->reload_result = SERVICE_FAILURE_RESOURCES;
2315 service_enter_running(s, SERVICE_SUCCESS);
2316}
2317
2318static void service_run_next_control(Service *s) {
2319 int r;
2320
2321 assert(s);
2322 assert(s->control_command);
2323 assert(s->control_command->command_next);
2324
2325 assert(s->control_command_id != SERVICE_EXEC_START);
2326
2327 s->control_command = s->control_command->command_next;
2328 service_unwatch_control_pid(s);
2329
2330 r = service_spawn(s,
2331 s->control_command,
2332 true,
2333 false,
2334 !s->permissions_start_only,
2335 !s->root_directory_start_only,
2336 s->control_command_id == SERVICE_EXEC_START_PRE ||
2337 s->control_command_id == SERVICE_EXEC_STOP_POST,
2338 false,
2339 true,
2340 &s->control_pid);
2341 if (r < 0)
2342 goto fail;
2343
2344 return;
2345
2346fail:
2347 log_warning("%s failed to run next control task: %s", UNIT(s)->id, strerror(-r));
2348
2349 if (s->state == SERVICE_START_PRE)
2350 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2351 else if (s->state == SERVICE_STOP)
2352 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2353 else if (s->state == SERVICE_STOP_POST)
2354 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2355 else if (s->state == SERVICE_RELOAD) {
2356 s->reload_result = SERVICE_FAILURE_RESOURCES;
2357 service_enter_running(s, SERVICE_SUCCESS);
2358 } else
2359 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2360}
2361
2362static void service_run_next_main(Service *s) {
2363 pid_t pid;
2364 int r;
2365
2366 assert(s);
2367 assert(s->main_command);
2368 assert(s->main_command->command_next);
2369 assert(s->type == SERVICE_ONESHOT);
2370
2371 s->main_command = s->main_command->command_next;
2372 service_unwatch_main_pid(s);
2373
2374 r = service_spawn(s,
2375 s->main_command,
2376 true,
2377 true,
2378 true,
2379 true,
2380 true,
2381 s->notify_access != NOTIFY_NONE,
2382 false,
2383 &pid);
2384 if (r < 0)
2385 goto fail;
2386
2387 service_set_main_pid(s, pid);
2388
2389 return;
2390
2391fail:
2392 log_warning("%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2393 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2394}
2395
2396static int service_start_limit_test(Service *s) {
2397 assert(s);
2398
2399 if (ratelimit_test(&s->start_limit))
2400 return 0;
2401
2402 switch (s->start_limit_action) {
2403
2404 case SERVICE_START_LIMIT_NONE:
2405 log_warning("%s start request repeated too quickly, refusing to start.", UNIT(s)->id);
2406 break;
2407
2408 case SERVICE_START_LIMIT_REBOOT: {
2409 DBusError error;
2410 int r;
2411
2412 dbus_error_init(&error);
2413
2414 log_warning("%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2415
2416 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START, SPECIAL_REBOOT_TARGET, JOB_REPLACE, true, &error, NULL);
2417 if (r < 0) {
2418 log_error("Failed to reboot: %s.", bus_error(&error, r));
2419 dbus_error_free(&error);
2420 }
2421
2422 break;
2423 }
2424
2425 case SERVICE_START_LIMIT_REBOOT_FORCE:
2426 log_warning("%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2427 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2428 break;
2429
2430 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2431 log_warning("%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2432 reboot(RB_AUTOBOOT);
2433 break;
2434
2435 default:
2436 log_error("start limit action=%i", s->start_limit_action);
2437 assert_not_reached("Unknown StartLimitAction.");
2438 }
2439
2440 return -ECANCELED;
2441}
2442
2443static int service_start(Unit *u) {
2444 Service *s = SERVICE(u);
2445 int r;
2446
2447 assert(s);
2448
2449 /* We cannot fulfill this request right now, try again later
2450 * please! */
2451 if (s->state == SERVICE_STOP ||
2452 s->state == SERVICE_STOP_SIGTERM ||
2453 s->state == SERVICE_STOP_SIGKILL ||
2454 s->state == SERVICE_STOP_POST ||
2455 s->state == SERVICE_FINAL_SIGTERM ||
2456 s->state == SERVICE_FINAL_SIGKILL)
2457 return -EAGAIN;
2458
2459 /* Already on it! */
2460 if (s->state == SERVICE_START_PRE ||
2461 s->state == SERVICE_START ||
2462 s->state == SERVICE_START_POST)
2463 return 0;
2464
2465 /* A service that will be restarted must be stopped first to
2466 * trigger BindTo and/or OnFailure dependencies. If a user
2467 * does not want to wait for the holdoff time to elapse, the
2468 * service should be manually restarted, not started. */
2469 if (s->state == SERVICE_AUTO_RESTART) {
2470 log_warning("%s automatic restart is pending, must be stopped before issuing start request.", UNIT(s)->id);
2471 return -ECANCELED;
2472 }
2473
2474 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2475
2476 /* Make sure we don't enter a busy loop of some kind. */
2477 r = service_start_limit_test(s);
2478 if (r < 0) {
2479 service_notify_sockets_dead(s, true);
2480 return r;
2481 }
2482
2483 s->result = SERVICE_SUCCESS;
2484 s->reload_result = SERVICE_SUCCESS;
2485 s->main_pid_known = false;
2486 s->main_pid_alien = false;
2487 s->forbid_restart = false;
2488
2489 service_enter_start_pre(s);
2490 return 0;
2491}
2492
2493static int service_stop(Unit *u) {
2494 Service *s = SERVICE(u);
2495
2496 assert(s);
2497
2498 /* Don't create restart jobs from here. */
2499 s->forbid_restart = true;
2500
2501 /* Already on it */
2502 if (s->state == SERVICE_STOP ||
2503 s->state == SERVICE_STOP_SIGTERM ||
2504 s->state == SERVICE_STOP_SIGKILL ||
2505 s->state == SERVICE_STOP_POST ||
2506 s->state == SERVICE_FINAL_SIGTERM ||
2507 s->state == SERVICE_FINAL_SIGKILL)
2508 return 0;
2509
2510 /* A restart will be scheduled or is in progress. */
2511 if (s->state == SERVICE_AUTO_RESTART) {
2512 service_enter_dead(s, SERVICE_SUCCESS, false);
2513 return 0;
2514 }
2515
2516 /* If there's already something running we go directly into
2517 * kill mode. */
2518 if (s->state == SERVICE_START_PRE ||
2519 s->state == SERVICE_START ||
2520 s->state == SERVICE_START_POST ||
2521 s->state == SERVICE_RELOAD) {
2522 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2523 return 0;
2524 }
2525
2526 assert(s->state == SERVICE_RUNNING ||
2527 s->state == SERVICE_EXITED);
2528
2529 service_enter_stop(s, SERVICE_SUCCESS);
2530 return 0;
2531}
2532
2533static int service_reload(Unit *u) {
2534 Service *s = SERVICE(u);
2535
2536 assert(s);
2537
2538 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2539
2540 service_enter_reload(s);
2541 return 0;
2542}
2543
2544static bool service_can_reload(Unit *u) {
2545 Service *s = SERVICE(u);
2546
2547 assert(s);
2548
2549 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2550}
2551
2552static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2553 Service *s = SERVICE(u);
2554
2555 assert(u);
2556 assert(f);
2557 assert(fds);
2558
2559 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2560 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2561 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2562
2563 if (s->control_pid > 0)
2564 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2565
2566 if (s->main_pid_known && s->main_pid > 0)
2567 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2568
2569 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2570
2571 if (s->status_text)
2572 unit_serialize_item(u, f, "status-text", s->status_text);
2573
2574 /* FIXME: There's a minor uncleanliness here: if there are
2575 * multiple commands attached here, we will start from the
2576 * first one again */
2577 if (s->control_command_id >= 0)
2578 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2579
2580 if (s->socket_fd >= 0) {
2581 int copy;
2582
2583 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2584 return copy;
2585
2586 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2587 }
2588
2589 if (s->main_exec_status.pid > 0) {
2590 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2591 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2592 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2593
2594 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2595 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2596 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2597 }
2598 }
2599 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2600 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2601
2602 return 0;
2603}
2604
2605static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2606 Service *s = SERVICE(u);
2607
2608 assert(u);
2609 assert(key);
2610 assert(value);
2611 assert(fds);
2612
2613 if (streq(key, "state")) {
2614 ServiceState state;
2615
2616 if ((state = service_state_from_string(value)) < 0)
2617 log_debug("Failed to parse state value %s", value);
2618 else
2619 s->deserialized_state = state;
2620 } else if (streq(key, "result")) {
2621 ServiceResult f;
2622
2623 f = service_result_from_string(value);
2624 if (f < 0)
2625 log_debug("Failed to parse result value %s", value);
2626 else if (f != SERVICE_SUCCESS)
2627 s->result = f;
2628
2629 } else if (streq(key, "reload-result")) {
2630 ServiceResult f;
2631
2632 f = service_result_from_string(value);
2633 if (f < 0)
2634 log_debug("Failed to parse reload result value %s", value);
2635 else if (f != SERVICE_SUCCESS)
2636 s->reload_result = f;
2637
2638 } else if (streq(key, "control-pid")) {
2639 pid_t pid;
2640
2641 if (parse_pid(value, &pid) < 0)
2642 log_debug("Failed to parse control-pid value %s", value);
2643 else
2644 s->control_pid = pid;
2645 } else if (streq(key, "main-pid")) {
2646 pid_t pid;
2647
2648 if (parse_pid(value, &pid) < 0)
2649 log_debug("Failed to parse main-pid value %s", value);
2650 else
2651 service_set_main_pid(s, (pid_t) pid);
2652 } else if (streq(key, "main-pid-known")) {
2653 int b;
2654
2655 if ((b = parse_boolean(value)) < 0)
2656 log_debug("Failed to parse main-pid-known value %s", value);
2657 else
2658 s->main_pid_known = b;
2659 } else if (streq(key, "status-text")) {
2660 char *t;
2661
2662 if ((t = strdup(value))) {
2663 free(s->status_text);
2664 s->status_text = t;
2665 }
2666
2667 } else if (streq(key, "control-command")) {
2668 ServiceExecCommand id;
2669
2670 if ((id = service_exec_command_from_string(value)) < 0)
2671 log_debug("Failed to parse exec-command value %s", value);
2672 else {
2673 s->control_command_id = id;
2674 s->control_command = s->exec_command[id];
2675 }
2676 } else if (streq(key, "socket-fd")) {
2677 int fd;
2678
2679 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2680 log_debug("Failed to parse socket-fd value %s", value);
2681 else {
2682
2683 if (s->socket_fd >= 0)
2684 close_nointr_nofail(s->socket_fd);
2685 s->socket_fd = fdset_remove(fds, fd);
2686 }
2687 } else if (streq(key, "main-exec-status-pid")) {
2688 pid_t pid;
2689
2690 if (parse_pid(value, &pid) < 0)
2691 log_debug("Failed to parse main-exec-status-pid value %s", value);
2692 else
2693 s->main_exec_status.pid = pid;
2694 } else if (streq(key, "main-exec-status-code")) {
2695 int i;
2696
2697 if (safe_atoi(value, &i) < 0)
2698 log_debug("Failed to parse main-exec-status-code value %s", value);
2699 else
2700 s->main_exec_status.code = i;
2701 } else if (streq(key, "main-exec-status-status")) {
2702 int i;
2703
2704 if (safe_atoi(value, &i) < 0)
2705 log_debug("Failed to parse main-exec-status-status value %s", value);
2706 else
2707 s->main_exec_status.status = i;
2708 } else if (streq(key, "main-exec-status-start"))
2709 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2710 else if (streq(key, "main-exec-status-exit"))
2711 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2712 else if (streq(key, "watchdog-timestamp"))
2713 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2714 else
2715 log_debug("Unknown serialization key '%s'", key);
2716
2717 return 0;
2718}
2719
2720static UnitActiveState service_active_state(Unit *u) {
2721 const UnitActiveState *table;
2722
2723 assert(u);
2724
2725 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2726
2727 return table[SERVICE(u)->state];
2728}
2729
2730static const char *service_sub_state_to_string(Unit *u) {
2731 assert(u);
2732
2733 return service_state_to_string(SERVICE(u)->state);
2734}
2735
2736static bool service_check_gc(Unit *u) {
2737 Service *s = SERVICE(u);
2738
2739 assert(s);
2740
2741 /* Never clean up services that still have a process around,
2742 * even if the service is formally dead. */
2743 if (cgroup_good(s) > 0 ||
2744 main_pid_good(s) > 0 ||
2745 control_pid_good(s) > 0)
2746 return true;
2747
2748#ifdef HAVE_SYSV_COMPAT
2749 if (s->is_sysv)
2750 return true;
2751#endif
2752
2753 return false;
2754}
2755
2756static bool service_check_snapshot(Unit *u) {
2757 Service *s = SERVICE(u);
2758
2759 assert(s);
2760
2761 return !s->got_socket_fd;
2762}
2763
2764static int service_retry_pid_file(Service *s) {
2765 int r;
2766
2767 assert(s->pid_file);
2768 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2769
2770 r = service_load_pid_file(s, false);
2771 if (r < 0)
2772 return r;
2773
2774 service_unwatch_pid_file(s);
2775
2776 service_enter_running(s, SERVICE_SUCCESS);
2777 return 0;
2778}
2779
2780static int service_watch_pid_file(Service *s) {
2781 int r;
2782
2783 log_debug("Setting watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
2784 r = path_spec_watch(s->pid_file_pathspec, UNIT(s));
2785 if (r < 0)
2786 goto fail;
2787
2788 /* the pidfile might have appeared just before we set the watch */
2789 service_retry_pid_file(s);
2790
2791 return 0;
2792fail:
2793 log_error("Failed to set a watch for %s's PID file %s: %s",
2794 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2795 service_unwatch_pid_file(s);
2796 return r;
2797}
2798
2799static int service_demand_pid_file(Service *s) {
2800 PathSpec *ps;
2801
2802 assert(s->pid_file);
2803 assert(!s->pid_file_pathspec);
2804
2805 ps = new0(PathSpec, 1);
2806 if (!ps)
2807 return -ENOMEM;
2808
2809 ps->path = strdup(s->pid_file);
2810 if (!ps->path) {
2811 free(ps);
2812 return -ENOMEM;
2813 }
2814
2815 path_kill_slashes(ps->path);
2816
2817 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2818 * keep their PID file open all the time. */
2819 ps->type = PATH_MODIFIED;
2820 ps->inotify_fd = -1;
2821
2822 s->pid_file_pathspec = ps;
2823
2824 return service_watch_pid_file(s);
2825}
2826
2827static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
2828 Service *s = SERVICE(u);
2829
2830 assert(s);
2831 assert(fd >= 0);
2832 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2833 assert(s->pid_file_pathspec);
2834 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2835
2836 log_debug("inotify event for %s", u->id);
2837
2838 if (path_spec_fd_event(s->pid_file_pathspec, events) < 0)
2839 goto fail;
2840
2841 if (service_retry_pid_file(s) == 0)
2842 return;
2843
2844 if (service_watch_pid_file(s) < 0)
2845 goto fail;
2846
2847 return;
2848fail:
2849 service_unwatch_pid_file(s);
2850 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2851}
2852
2853static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2854 Service *s = SERVICE(u);
2855 ServiceResult f;
2856
2857 assert(s);
2858 assert(pid >= 0);
2859
2860 if (UNIT(s)->fragment_path ? is_clean_exit(code, status) : is_clean_exit_lsb(code, status))
2861 f = SERVICE_SUCCESS;
2862 else if (code == CLD_EXITED)
2863 f = SERVICE_FAILURE_EXIT_CODE;
2864 else if (code == CLD_KILLED)
2865 f = SERVICE_FAILURE_SIGNAL;
2866 else if (code == CLD_DUMPED)
2867 f = SERVICE_FAILURE_CORE_DUMP;
2868 else
2869 assert_not_reached("Unknown code");
2870
2871 if (s->main_pid == pid) {
2872 /* Forking services may occasionally move to a new PID.
2873 * As long as they update the PID file before exiting the old
2874 * PID, they're fine. */
2875 if (service_load_pid_file(s, false) == 0)
2876 return;
2877
2878 s->main_pid = 0;
2879 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2880
2881 /* If this is not a forking service than the main
2882 * process got started and hence we copy the exit
2883 * status so that it is recorded both as main and as
2884 * control process exit status */
2885 if (s->main_command) {
2886 s->main_command->exec_status = s->main_exec_status;
2887
2888 if (s->main_command->ignore)
2889 f = SERVICE_SUCCESS;
2890 }
2891
2892 log_full(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2893 "%s: main process exited, code=%s, status=%i", u->id, sigchld_code_to_string(code), status);
2894
2895 if (f != SERVICE_SUCCESS)
2896 s->result = f;
2897
2898 if (s->main_command &&
2899 s->main_command->command_next &&
2900 f == SERVICE_SUCCESS) {
2901
2902 /* There is another command to *
2903 * execute, so let's do that. */
2904
2905 log_debug("%s running next main command for state %s", u->id, service_state_to_string(s->state));
2906 service_run_next_main(s);
2907
2908 } else {
2909
2910 /* The service exited, so the service is officially
2911 * gone. */
2912 s->main_command = NULL;
2913
2914 switch (s->state) {
2915
2916 case SERVICE_START_POST:
2917 case SERVICE_RELOAD:
2918 case SERVICE_STOP:
2919 /* Need to wait until the operation is
2920 * done */
2921 break;
2922
2923 case SERVICE_START:
2924 if (s->type == SERVICE_ONESHOT) {
2925 /* This was our main goal, so let's go on */
2926 if (f == SERVICE_SUCCESS)
2927 service_enter_start_post(s);
2928 else
2929 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
2930 break;
2931 } else {
2932 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2933
2934 /* Fall through */
2935 }
2936
2937 case SERVICE_RUNNING:
2938 service_enter_running(s, f);
2939 break;
2940
2941 case SERVICE_STOP_SIGTERM:
2942 case SERVICE_STOP_SIGKILL:
2943
2944 if (!control_pid_good(s))
2945 service_enter_stop_post(s, f);
2946
2947 /* If there is still a control process, wait for that first */
2948 break;
2949
2950 default:
2951 assert_not_reached("Uh, main process died at wrong time.");
2952 }
2953 }
2954
2955 } else if (s->control_pid == pid) {
2956
2957 s->control_pid = 0;
2958
2959 if (s->control_command) {
2960 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
2961
2962 if (s->control_command->ignore)
2963 f = SERVICE_SUCCESS;
2964 }
2965
2966 log_full(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2967 "%s: control process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
2968
2969 if (f != SERVICE_SUCCESS)
2970 s->result = f;
2971
2972 /* Immediately get rid of the cgroup, so that the
2973 * kernel doesn't delay the cgroup empty messages for
2974 * the service cgroup any longer than necessary */
2975 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2976
2977 if (s->control_command &&
2978 s->control_command->command_next &&
2979 f == SERVICE_SUCCESS) {
2980
2981 /* There is another command to *
2982 * execute, so let's do that. */
2983
2984 log_debug("%s running next control command for state %s", u->id, service_state_to_string(s->state));
2985 service_run_next_control(s);
2986
2987 } else {
2988 /* No further commands for this step, so let's
2989 * figure out what to do next */
2990
2991 s->control_command = NULL;
2992 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2993
2994 log_debug("%s got final SIGCHLD for state %s", u->id, service_state_to_string(s->state));
2995
2996 switch (s->state) {
2997
2998 case SERVICE_START_PRE:
2999 if (f == SERVICE_SUCCESS)
3000 service_enter_start(s);
3001 else
3002 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3003 break;
3004
3005 case SERVICE_START:
3006 assert(s->type == SERVICE_FORKING);
3007
3008 if (f != SERVICE_SUCCESS) {
3009 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3010 break;
3011 }
3012
3013 if (s->pid_file) {
3014 bool has_start_post;
3015 int r;
3016
3017 /* Let's try to load the pid file here if we can.
3018 * The PID file might actually be created by a START_POST
3019 * script. In that case don't worry if the loading fails. */
3020
3021 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3022 r = service_load_pid_file(s, !has_start_post);
3023 if (!has_start_post && r < 0) {
3024 r = service_demand_pid_file(s);
3025 if (r < 0 || !cgroup_good(s))
3026 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3027 break;
3028 }
3029 } else
3030 service_search_main_pid(s);
3031
3032 service_enter_start_post(s);
3033 break;
3034
3035 case SERVICE_START_POST:
3036 if (f != SERVICE_SUCCESS) {
3037 service_enter_stop(s, f);
3038 break;
3039 }
3040
3041 if (s->pid_file) {
3042 int r;
3043
3044 r = service_load_pid_file(s, true);
3045 if (r < 0) {
3046 r = service_demand_pid_file(s);
3047 if (r < 0 || !cgroup_good(s))
3048 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3049 break;
3050 }
3051 } else
3052 service_search_main_pid(s);
3053
3054 service_enter_running(s, SERVICE_SUCCESS);
3055 break;
3056
3057 case SERVICE_RELOAD:
3058 if (f == SERVICE_SUCCESS) {
3059 service_load_pid_file(s, true);
3060 service_search_main_pid(s);
3061 }
3062
3063 s->reload_result = f;
3064 service_enter_running(s, SERVICE_SUCCESS);
3065 break;
3066
3067 case SERVICE_STOP:
3068 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3069 break;
3070
3071 case SERVICE_STOP_SIGTERM:
3072 case SERVICE_STOP_SIGKILL:
3073 if (main_pid_good(s) <= 0)
3074 service_enter_stop_post(s, f);
3075
3076 /* If there is still a service
3077 * process around, wait until
3078 * that one quit, too */
3079 break;
3080
3081 case SERVICE_STOP_POST:
3082 case SERVICE_FINAL_SIGTERM:
3083 case SERVICE_FINAL_SIGKILL:
3084 service_enter_dead(s, f, true);
3085 break;
3086
3087 default:
3088 assert_not_reached("Uh, control process died at wrong time.");
3089 }
3090 }
3091 }
3092
3093 /* Notify clients about changed exit status */
3094 unit_add_to_dbus_queue(u);
3095}
3096
3097static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
3098 Service *s = SERVICE(u);
3099
3100 assert(s);
3101 assert(elapsed == 1);
3102
3103 if (w == &s->watchdog_watch) {
3104 service_handle_watchdog(s);
3105 return;
3106 }
3107
3108 assert(w == &s->timer_watch);
3109
3110 switch (s->state) {
3111
3112 case SERVICE_START_PRE:
3113 case SERVICE_START:
3114 log_warning("%s operation timed out. Terminating.", u->id);
3115 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3116 break;
3117
3118 case SERVICE_START_POST:
3119 log_warning("%s operation timed out. Stopping.", u->id);
3120 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3121 break;
3122
3123 case SERVICE_RELOAD:
3124 log_warning("%s operation timed out. Stopping.", u->id);
3125 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3126 service_enter_running(s, SERVICE_SUCCESS);
3127 break;
3128
3129 case SERVICE_STOP:
3130 log_warning("%s stopping timed out. Terminating.", u->id);
3131 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3132 break;
3133
3134 case SERVICE_STOP_SIGTERM:
3135 if (s->exec_context.send_sigkill) {
3136 log_warning("%s stopping timed out. Killing.", u->id);
3137 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3138 } else {
3139 log_warning("%s stopping timed out. Skipping SIGKILL.", u->id);
3140 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3141 }
3142
3143 break;
3144
3145 case SERVICE_STOP_SIGKILL:
3146 /* Uh, we sent a SIGKILL and it is still not gone?
3147 * Must be something we cannot kill, so let's just be
3148 * weirded out and continue */
3149
3150 log_warning("%s still around after SIGKILL. Ignoring.", u->id);
3151 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3152 break;
3153
3154 case SERVICE_STOP_POST:
3155 log_warning("%s stopping timed out (2). Terminating.", u->id);
3156 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3157 break;
3158
3159 case SERVICE_FINAL_SIGTERM:
3160 if (s->exec_context.send_sigkill) {
3161 log_warning("%s stopping timed out (2). Killing.", u->id);
3162 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3163 } else {
3164 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->id);
3165 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3166 }
3167
3168 break;
3169
3170 case SERVICE_FINAL_SIGKILL:
3171 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->id);
3172 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3173 break;
3174
3175 case SERVICE_AUTO_RESTART:
3176 log_info("%s holdoff time over, scheduling restart.", u->id);
3177 service_enter_restart(s);
3178 break;
3179
3180 default:
3181 assert_not_reached("Timeout at wrong time.");
3182 }
3183}
3184
3185static void service_cgroup_notify_event(Unit *u) {
3186 Service *s = SERVICE(u);
3187
3188 assert(u);
3189
3190 log_debug("%s: cgroup is empty", u->id);
3191
3192 switch (s->state) {
3193
3194 /* Waiting for SIGCHLD is usually more interesting,
3195 * because it includes return codes/signals. Which is
3196 * why we ignore the cgroup events for most cases,
3197 * except when we don't know pid which to expect the
3198 * SIGCHLD for. */
3199
3200 case SERVICE_START:
3201 case SERVICE_START_POST:
3202 /* If we were hoping for the daemon to write its PID file,
3203 * we can give up now. */
3204 if (s->pid_file_pathspec) {
3205 log_warning("%s never wrote its PID file. Failing.", UNIT(s)->id);
3206 service_unwatch_pid_file(s);
3207 if (s->state == SERVICE_START)
3208 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3209 else
3210 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3211 }
3212 break;
3213
3214 case SERVICE_RUNNING:
3215 /* service_enter_running() will figure out what to do */
3216 service_enter_running(s, SERVICE_SUCCESS);
3217 break;
3218
3219 case SERVICE_STOP_SIGTERM:
3220 case SERVICE_STOP_SIGKILL:
3221
3222 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3223 service_enter_stop_post(s, SERVICE_SUCCESS);
3224
3225 break;
3226
3227 case SERVICE_FINAL_SIGTERM:
3228 case SERVICE_FINAL_SIGKILL:
3229 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3230 service_enter_dead(s, SERVICE_SUCCESS, true);
3231
3232 break;
3233
3234 default:
3235 ;
3236 }
3237}
3238
3239static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3240 Service *s = SERVICE(u);
3241 const char *e;
3242
3243 assert(u);
3244
3245 if (s->notify_access == NOTIFY_NONE) {
3246 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
3247 u->id, (unsigned long) pid);
3248 return;
3249 }
3250
3251 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3252 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
3253 u->id, (unsigned long) pid, (unsigned long) s->main_pid);
3254 return;
3255 }
3256
3257 log_debug("%s: Got message", u->id);
3258
3259 /* Interpret MAINPID= */
3260 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3261 (s->state == SERVICE_START ||
3262 s->state == SERVICE_START_POST ||
3263 s->state == SERVICE_RUNNING ||
3264 s->state == SERVICE_RELOAD)) {
3265
3266 if (parse_pid(e + 8, &pid) < 0)
3267 log_warning("Failed to parse notification message %s", e);
3268 else {
3269 log_debug("%s: got %s", u->id, e);
3270 service_set_main_pid(s, pid);
3271 }
3272 }
3273
3274 /* Interpret READY= */
3275 if (s->type == SERVICE_NOTIFY &&
3276 s->state == SERVICE_START &&
3277 strv_find(tags, "READY=1")) {
3278 log_debug("%s: got READY=1", u->id);
3279
3280 service_enter_start_post(s);
3281 }
3282
3283 /* Interpret STATUS= */
3284 e = strv_find_prefix(tags, "STATUS=");
3285 if (e) {
3286 char *t;
3287
3288 if (e[7]) {
3289
3290 if (!utf8_is_valid(e+7)) {
3291 log_warning("Status message in notification is not UTF-8 clean.");
3292 return;
3293 }
3294
3295 t = strdup(e+7);
3296 if (!t) {
3297 log_error("Failed to allocate string.");
3298 return;
3299 }
3300
3301 log_debug("%s: got %s", u->id, e);
3302
3303 free(s->status_text);
3304 s->status_text = t;
3305 } else {
3306 free(s->status_text);
3307 s->status_text = NULL;
3308 }
3309
3310 }
3311 if (strv_find(tags, "WATCHDOG=1")) {
3312 log_debug("%s: got WATCHDOG=1", u->id);
3313 service_reset_watchdog(s);
3314 }
3315
3316 /* Notify clients about changed status or main pid */
3317 unit_add_to_dbus_queue(u);
3318}
3319
3320#ifdef HAVE_SYSV_COMPAT
3321
3322#ifdef TARGET_SUSE
3323static void sysv_facility_in_insserv_conf(Manager *mgr) {
3324 FILE *f=NULL;
3325 int r;
3326
3327 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3328 r = errno == ENOENT ? 0 : -errno;
3329 goto finish;
3330 }
3331
3332 while (!feof(f)) {
3333 char l[LINE_MAX], *t;
3334 char **parsed = NULL;
3335
3336 if (!fgets(l, sizeof(l), f)) {
3337 if (feof(f))
3338 break;
3339
3340 r = -errno;
3341 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3342 goto finish;
3343 }
3344
3345 t = strstrip(l);
3346 if (*t != '$' && *t != '<')
3347 continue;
3348
3349 parsed = strv_split(t,WHITESPACE);
3350 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3351 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3352 char *facility;
3353 Unit *u;
3354 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3355 continue;
3356 if ((u = manager_get_unit(mgr, facility)) && (u->type == UNIT_TARGET)) {
3357 UnitDependency e;
3358 char *dep = NULL, *name, **j;
3359
3360 STRV_FOREACH (j, parsed+1) {
3361 if (*j[0]=='+') {
3362 e = UNIT_WANTS;
3363 name = *j+1;
3364 }
3365 else {
3366 e = UNIT_REQUIRES;
3367 name = *j;
3368 }
3369 if (sysv_translate_facility(name, NULL, &dep) < 0)
3370 continue;
3371
3372 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3373 free(dep);
3374 }
3375 }
3376 free(facility);
3377 }
3378 strv_free(parsed);
3379 }
3380finish:
3381 if (f)
3382 fclose(f);
3383
3384}
3385#endif
3386
3387static int service_enumerate(Manager *m) {
3388 char **p;
3389 unsigned i;
3390 DIR *d = NULL;
3391 char *path = NULL, *fpath = NULL, *name = NULL;
3392 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3393 Unit *service;
3394 Iterator j;
3395 int r;
3396
3397 assert(m);
3398
3399 if (m->running_as != MANAGER_SYSTEM)
3400 return 0;
3401
3402 zero(runlevel_services);
3403
3404 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3405 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3406 struct dirent *de;
3407
3408 free(path);
3409 path = join(*p, "/", rcnd_table[i].path, NULL);
3410 if (!path) {
3411 r = -ENOMEM;
3412 goto finish;
3413 }
3414
3415 if (d)
3416 closedir(d);
3417
3418 if (!(d = opendir(path))) {
3419 if (errno != ENOENT)
3420 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3421
3422 continue;
3423 }
3424
3425 while ((de = readdir(d))) {
3426 int a, b;
3427
3428 if (ignore_file(de->d_name))
3429 continue;
3430
3431 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3432 continue;
3433
3434 if (strlen(de->d_name) < 4)
3435 continue;
3436
3437 a = undecchar(de->d_name[1]);
3438 b = undecchar(de->d_name[2]);
3439
3440 if (a < 0 || b < 0)
3441 continue;
3442
3443 free(fpath);
3444 fpath = join(path, "/", de->d_name, NULL);
3445 if (!fpath) {
3446 r = -ENOMEM;
3447 goto finish;
3448 }
3449
3450 if (access(fpath, X_OK) < 0) {
3451
3452 if (errno != ENOENT)
3453 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3454
3455 continue;
3456 }
3457
3458 free(name);
3459 if (!(name = sysv_translate_name(de->d_name + 3))) {
3460 r = -ENOMEM;
3461 goto finish;
3462 }
3463
3464 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3465 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3466 continue;
3467 }
3468
3469 if (de->d_name[0] == 'S') {
3470
3471 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3472 SERVICE(service)->sysv_start_priority_from_rcnd =
3473 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3474
3475 SERVICE(service)->sysv_enabled = true;
3476 }
3477
3478 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3479 goto finish;
3480
3481 if ((r = set_put(runlevel_services[i], service)) < 0)
3482 goto finish;
3483
3484 } else if (de->d_name[0] == 'K' &&
3485 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3486 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3487
3488 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3489 goto finish;
3490
3491 if ((r = set_put(shutdown_services, service)) < 0)
3492 goto finish;
3493 }
3494 }
3495 }
3496
3497 /* Now we loaded all stubs and are aware of the lowest
3498 start-up priority for all services, not let's actually load
3499 the services, this will also tell us which services are
3500 actually native now */
3501 manager_dispatch_load_queue(m);
3502
3503 /* If this is a native service, rely on native ways to pull in
3504 * a service, don't pull it in via sysv rcN.d links. */
3505 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3506 SET_FOREACH(service, runlevel_services[i], j) {
3507 service = unit_follow_merge(service);
3508
3509 if (service->fragment_path)
3510 continue;
3511
3512 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3513 goto finish;
3514 }
3515
3516 /* We honour K links only for halt/reboot. For the normal
3517 * runlevels we assume the stop jobs will be implicitly added
3518 * by the core logic. Also, we don't really distinguish here
3519 * between the runlevels 0 and 6 and just add them to the
3520 * special shutdown target. On SUSE the boot.d/ runlevel is
3521 * also used for shutdown, so we add links for that too to the
3522 * shutdown target.*/
3523 SET_FOREACH(service, shutdown_services, j) {
3524 service = unit_follow_merge(service);
3525
3526 if (service->fragment_path)
3527 continue;
3528
3529 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3530 goto finish;
3531 }
3532
3533 r = 0;
3534
3535#ifdef TARGET_SUSE
3536 sysv_facility_in_insserv_conf (m);
3537#endif
3538
3539finish:
3540 free(path);
3541 free(fpath);
3542 free(name);
3543
3544 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3545 set_free(runlevel_services[i]);
3546 set_free(shutdown_services);
3547
3548 if (d)
3549 closedir(d);
3550
3551 return r;
3552}
3553#endif
3554
3555static void service_bus_name_owner_change(
3556 Unit *u,
3557 const char *name,
3558 const char *old_owner,
3559 const char *new_owner) {
3560
3561 Service *s = SERVICE(u);
3562
3563 assert(s);
3564 assert(name);
3565
3566 assert(streq(s->bus_name, name));
3567 assert(old_owner || new_owner);
3568
3569 if (old_owner && new_owner)
3570 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->id, name, old_owner, new_owner);
3571 else if (old_owner)
3572 log_debug("%s's D-Bus name %s no longer registered by %s", u->id, name, old_owner);
3573 else
3574 log_debug("%s's D-Bus name %s now registered by %s", u->id, name, new_owner);
3575
3576 s->bus_name_good = !!new_owner;
3577
3578 if (s->type == SERVICE_DBUS) {
3579
3580 /* service_enter_running() will figure out what to
3581 * do */
3582 if (s->state == SERVICE_RUNNING)
3583 service_enter_running(s, SERVICE_SUCCESS);
3584 else if (s->state == SERVICE_START && new_owner)
3585 service_enter_start_post(s);
3586
3587 } else if (new_owner &&
3588 s->main_pid <= 0 &&
3589 (s->state == SERVICE_START ||
3590 s->state == SERVICE_START_POST ||
3591 s->state == SERVICE_RUNNING ||
3592 s->state == SERVICE_RELOAD)) {
3593
3594 /* Try to acquire PID from bus service */
3595 log_debug("Trying to acquire PID from D-Bus name...");
3596
3597 bus_query_pid(u->manager, name);
3598 }
3599}
3600
3601static void service_bus_query_pid_done(
3602 Unit *u,
3603 const char *name,
3604 pid_t pid) {
3605
3606 Service *s = SERVICE(u);
3607
3608 assert(s);
3609 assert(name);
3610
3611 log_debug("%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3612
3613 if (s->main_pid <= 0 &&
3614 (s->state == SERVICE_START ||
3615 s->state == SERVICE_START_POST ||
3616 s->state == SERVICE_RUNNING ||
3617 s->state == SERVICE_RELOAD))
3618 service_set_main_pid(s, pid);
3619}
3620
3621int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3622
3623 assert(s);
3624 assert(fd >= 0);
3625
3626 /* This is called by the socket code when instantiating a new
3627 * service for a stream socket and the socket needs to be
3628 * configured. */
3629
3630 if (UNIT(s)->load_state != UNIT_LOADED)
3631 return -EINVAL;
3632
3633 if (s->socket_fd >= 0)
3634 return -EBUSY;
3635
3636 if (s->state != SERVICE_DEAD)
3637 return -EAGAIN;
3638
3639 s->socket_fd = fd;
3640 s->got_socket_fd = true;
3641
3642 unit_ref_set(&s->accept_socket, UNIT(sock));
3643
3644 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3645}
3646
3647static void service_reset_failed(Unit *u) {
3648 Service *s = SERVICE(u);
3649
3650 assert(s);
3651
3652 if (s->state == SERVICE_FAILED)
3653 service_set_state(s, SERVICE_DEAD);
3654
3655 s->result = SERVICE_SUCCESS;
3656 s->reload_result = SERVICE_SUCCESS;
3657}
3658
3659static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3660 Service *s = SERVICE(u);
3661 int r = 0;
3662 Set *pid_set = NULL;
3663
3664 assert(s);
3665
3666 if (s->main_pid <= 0 && who == KILL_MAIN) {
3667 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3668 return -ESRCH;
3669 }
3670
3671 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3672 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3673 return -ESRCH;
3674 }
3675
3676 if (who == KILL_CONTROL || who == KILL_ALL)
3677 if (s->control_pid > 0)
3678 if (kill(s->control_pid, signo) < 0)
3679 r = -errno;
3680
3681 if (who == KILL_MAIN || who == KILL_ALL)
3682 if (s->main_pid > 0)
3683 if (kill(s->main_pid, signo) < 0)
3684 r = -errno;
3685
3686 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
3687 int q;
3688
3689 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3690 return -ENOMEM;
3691
3692 /* Exclude the control/main pid from being killed via the cgroup */
3693 if (s->control_pid > 0)
3694 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3695 r = q;
3696 goto finish;
3697 }
3698
3699 if (s->main_pid > 0)
3700 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3701 r = q;
3702 goto finish;
3703 }
3704 q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, false, pid_set, NULL);
3705 if (q < 0)
3706 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3707 r = q;
3708 }
3709
3710finish:
3711 if (pid_set)
3712 set_free(pid_set);
3713
3714 return r;
3715}
3716
3717static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3718 [SERVICE_DEAD] = "dead",
3719 [SERVICE_START_PRE] = "start-pre",
3720 [SERVICE_START] = "start",
3721 [SERVICE_START_POST] = "start-post",
3722 [SERVICE_RUNNING] = "running",
3723 [SERVICE_EXITED] = "exited",
3724 [SERVICE_RELOAD] = "reload",
3725 [SERVICE_STOP] = "stop",
3726 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3727 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3728 [SERVICE_STOP_POST] = "stop-post",
3729 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3730 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3731 [SERVICE_FAILED] = "failed",
3732 [SERVICE_AUTO_RESTART] = "auto-restart",
3733};
3734
3735DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3736
3737static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3738 [SERVICE_RESTART_NO] = "no",
3739 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3740 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3741 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3742 [SERVICE_RESTART_ALWAYS] = "always"
3743};
3744
3745DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3746
3747static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3748 [SERVICE_SIMPLE] = "simple",
3749 [SERVICE_FORKING] = "forking",
3750 [SERVICE_ONESHOT] = "oneshot",
3751 [SERVICE_DBUS] = "dbus",
3752 [SERVICE_NOTIFY] = "notify",
3753 [SERVICE_IDLE] = "idle"
3754};
3755
3756DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3757
3758static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3759 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3760 [SERVICE_EXEC_START] = "ExecStart",
3761 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3762 [SERVICE_EXEC_RELOAD] = "ExecReload",
3763 [SERVICE_EXEC_STOP] = "ExecStop",
3764 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3765};
3766
3767DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3768
3769static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3770 [NOTIFY_NONE] = "none",
3771 [NOTIFY_MAIN] = "main",
3772 [NOTIFY_ALL] = "all"
3773};
3774
3775DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3776
3777static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3778 [SERVICE_SUCCESS] = "success",
3779 [SERVICE_FAILURE_RESOURCES] = "resources",
3780 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3781 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3782 [SERVICE_FAILURE_SIGNAL] = "signal",
3783 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3784 [SERVICE_FAILURE_WATCHDOG] = "watchdog"
3785};
3786
3787DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3788
3789static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3790 [SERVICE_START_LIMIT_NONE] = "none",
3791 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3792 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3793 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3794};
3795DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3796
3797const UnitVTable service_vtable = {
3798 .suffix = ".service",
3799 .object_size = sizeof(Service),
3800 .sections =
3801 "Unit\0"
3802 "Service\0"
3803 "Install\0",
3804
3805 .init = service_init,
3806 .done = service_done,
3807 .load = service_load,
3808
3809 .coldplug = service_coldplug,
3810
3811 .dump = service_dump,
3812
3813 .start = service_start,
3814 .stop = service_stop,
3815 .reload = service_reload,
3816
3817 .can_reload = service_can_reload,
3818
3819 .kill = service_kill,
3820
3821 .serialize = service_serialize,
3822 .deserialize_item = service_deserialize_item,
3823
3824 .active_state = service_active_state,
3825 .sub_state_to_string = service_sub_state_to_string,
3826
3827 .check_gc = service_check_gc,
3828 .check_snapshot = service_check_snapshot,
3829
3830 .sigchld_event = service_sigchld_event,
3831 .timer_event = service_timer_event,
3832 .fd_event = service_fd_event,
3833
3834 .reset_failed = service_reset_failed,
3835
3836 .cgroup_notify_empty = service_cgroup_notify_event,
3837 .notify_message = service_notify_message,
3838
3839 .bus_name_owner_change = service_bus_name_owner_change,
3840 .bus_query_pid_done = service_bus_query_pid_done,
3841
3842 .bus_interface = "org.freedesktop.systemd1.Service",
3843 .bus_message_handler = bus_service_message_handler,
3844 .bus_invalidating_properties = bus_service_invalidating_properties,
3845
3846#ifdef HAVE_SYSV_COMPAT
3847 .enumerate = service_enumerate,
3848#endif
3849 .status_message_formats = {
3850 .starting_stopping = {
3851 [0] = "Starting %s...",
3852 [1] = "Stopping %s...",
3853 },
3854 .finished_start_job = {
3855 [JOB_DONE] = "Started %s.",
3856 [JOB_FAILED] = "Failed to start %s.",
3857 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3858 [JOB_TIMEOUT] = "Timed out starting %s.",
3859 },
3860 .finished_stop_job = {
3861 [JOB_DONE] = "Stopped %s.",
3862 [JOB_FAILED] = "Stopped (with error) %s.",
3863 [JOB_TIMEOUT] = "Timed out stopping %s.",
3864 },
3865 },
3866};
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