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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
134 assert(u);
135 assert(u->load_state == UNIT_STUB);
136
137 s->timeout_start_usec = DEFAULT_TIMEOUT_USEC;
138 s->timeout_stop_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 kill_context_init(&s->kill_context);
154
155 RATELIMIT_INIT(s->start_limit, 10*USEC_PER_SEC, 5);
156
157 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
158}
159
160static void service_unwatch_control_pid(Service *s) {
161 assert(s);
162
163 if (s->control_pid <= 0)
164 return;
165
166 unit_unwatch_pid(UNIT(s), s->control_pid);
167 s->control_pid = 0;
168}
169
170static void service_unwatch_main_pid(Service *s) {
171 assert(s);
172
173 if (s->main_pid <= 0)
174 return;
175
176 unit_unwatch_pid(UNIT(s), s->main_pid);
177 s->main_pid = 0;
178}
179
180static void service_unwatch_pid_file(Service *s) {
181 if (!s->pid_file_pathspec)
182 return;
183
184 log_debug("Stopping watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
185 path_spec_unwatch(s->pid_file_pathspec, UNIT(s));
186 path_spec_done(s->pid_file_pathspec);
187 free(s->pid_file_pathspec);
188 s->pid_file_pathspec = NULL;
189}
190
191static int service_set_main_pid(Service *s, pid_t pid) {
192 pid_t ppid;
193
194 assert(s);
195
196 if (pid <= 1)
197 return -EINVAL;
198
199 if (pid == getpid())
200 return -EINVAL;
201
202 s->main_pid = pid;
203 s->main_pid_known = true;
204
205 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
206 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
207 UNIT(s)->id, (unsigned long) pid);
208
209 s->main_pid_alien = true;
210 } else
211 s->main_pid_alien = false;
212
213 exec_status_start(&s->main_exec_status, pid);
214
215 return 0;
216}
217
218static void service_close_socket_fd(Service *s) {
219 assert(s);
220
221 if (s->socket_fd < 0)
222 return;
223
224 close_nointr_nofail(s->socket_fd);
225 s->socket_fd = -1;
226}
227
228static void service_connection_unref(Service *s) {
229 assert(s);
230
231 if (!UNIT_DEREF(s->accept_socket))
232 return;
233
234 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
235 unit_ref_unset(&s->accept_socket);
236}
237
238static void service_stop_watchdog(Service *s) {
239 assert(s);
240
241 unit_unwatch_timer(UNIT(s), &s->watchdog_watch);
242 s->watchdog_timestamp.realtime = 0;
243 s->watchdog_timestamp.monotonic = 0;
244}
245
246static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart);
247
248static void service_handle_watchdog(Service *s) {
249 usec_t offset;
250 int r;
251
252 assert(s);
253
254 if (s->watchdog_usec == 0)
255 return;
256
257 offset = now(CLOCK_MONOTONIC) - s->watchdog_timestamp.monotonic;
258 if (offset >= s->watchdog_usec) {
259 log_error("%s watchdog timeout!", UNIT(s)->id);
260 service_enter_dead(s, SERVICE_FAILURE_WATCHDOG, true);
261 return;
262 }
263
264 r = unit_watch_timer(UNIT(s), s->watchdog_usec - offset, &s->watchdog_watch);
265 if (r < 0)
266 log_warning("%s failed to install watchdog timer: %s", UNIT(s)->id, strerror(-r));
267}
268
269static void service_reset_watchdog(Service *s) {
270 assert(s);
271
272 dual_timestamp_get(&s->watchdog_timestamp);
273 service_handle_watchdog(s);
274}
275
276static void service_done(Unit *u) {
277 Service *s = SERVICE(u);
278
279 assert(s);
280
281 free(s->pid_file);
282 s->pid_file = NULL;
283
284#ifdef HAVE_SYSV_COMPAT
285 free(s->sysv_runlevels);
286 s->sysv_runlevels = NULL;
287#endif
288
289 free(s->status_text);
290 s->status_text = NULL;
291
292 exec_context_done(&s->exec_context);
293 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
294 s->control_command = NULL;
295 s->main_command = NULL;
296
297 set_free(s->restart_ignore_status.code);
298 s->restart_ignore_status.code = NULL;
299 set_free(s->restart_ignore_status.signal);
300 s->restart_ignore_status.signal = NULL;
301
302 set_free(s->success_status.code);
303 s->success_status.code = NULL;
304 set_free(s->success_status.signal);
305 s->success_status.signal = NULL;
306
307 /* This will leak a process, but at least no memory or any of
308 * our resources */
309 service_unwatch_main_pid(s);
310 service_unwatch_control_pid(s);
311 service_unwatch_pid_file(s);
312
313 if (s->bus_name) {
314 unit_unwatch_bus_name(u, s->bus_name);
315 free(s->bus_name);
316 s->bus_name = NULL;
317 }
318
319 service_close_socket_fd(s);
320 service_connection_unref(s);
321
322 unit_ref_unset(&s->accept_socket);
323
324 service_stop_watchdog(s);
325
326 unit_unwatch_timer(u, &s->timer_watch);
327}
328
329#ifdef HAVE_SYSV_COMPAT
330static char *sysv_translate_name(const char *name) {
331 char *r;
332
333 if (!(r = new(char, strlen(name) + sizeof(".service"))))
334 return NULL;
335
336#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
337 if (endswith(name, ".sh"))
338 /* Drop Debian-style .sh suffix */
339 strcpy(stpcpy(r, name) - 3, ".service");
340#endif
341#ifdef TARGET_SUSE
342 if (startswith(name, "boot."))
343 /* Drop SuSE-style boot. prefix */
344 strcpy(stpcpy(r, name + 5), ".service");
345#endif
346#ifdef TARGET_FRUGALWARE
347 if (startswith(name, "rc."))
348 /* Drop Frugalware-style rc. prefix */
349 strcpy(stpcpy(r, name + 3), ".service");
350#endif
351 else
352 /* Normal init scripts */
353 strcpy(stpcpy(r, name), ".service");
354
355 return r;
356}
357
358static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
359
360 /* We silently ignore the $ prefix here. According to the LSB
361 * spec it simply indicates whether something is a
362 * standardized name or a distribution-specific one. Since we
363 * just follow what already exists and do not introduce new
364 * uses or names we don't care who introduced a new name. */
365
366 static const char * const table[] = {
367 /* LSB defined facilities */
368 "local_fs", SPECIAL_LOCAL_FS_TARGET,
369#if defined(TARGET_MANDRIVA) || defined(TARGET_MAGEIA)
370#else
371 /* Due to unfortunate name selection in Mandriva,
372 * $network is provided by network-up which is ordered
373 * after network which actually starts interfaces.
374 * To break the loop, just ignore it */
375 "network", SPECIAL_NETWORK_TARGET,
376#endif
377 "named", SPECIAL_NSS_LOOKUP_TARGET,
378 "portmap", SPECIAL_RPCBIND_TARGET,
379 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
380 "syslog", SPECIAL_SYSLOG_TARGET,
381 "time", SPECIAL_TIME_SYNC_TARGET,
382
383 /* common extensions */
384 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
385 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
386 "null", NULL,
387
388#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
389 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
390#endif
391
392#ifdef TARGET_FEDORA
393 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
394 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
395 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
396#endif
397
398#ifdef TARGET_SUSE
399 "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
400#endif
401 };
402
403 unsigned i;
404 char *r;
405 const char *n;
406
407 assert(name);
408 assert(_r);
409
410 n = *name == '$' ? name + 1 : name;
411
412 for (i = 0; i < ELEMENTSOF(table); i += 2) {
413
414 if (!streq(table[i], n))
415 continue;
416
417 if (!table[i+1])
418 return 0;
419
420 if (!(r = strdup(table[i+1])))
421 return -ENOMEM;
422
423 goto finish;
424 }
425
426 /* If we don't know this name, fallback heuristics to figure
427 * out whether something is a target or a service alias. */
428
429 if (*name == '$') {
430 if (!unit_prefix_is_valid(n))
431 return -EINVAL;
432
433 /* Facilities starting with $ are most likely targets */
434 r = unit_name_build(n, NULL, ".target");
435 } else if (filename && streq(name, filename))
436 /* Names equaling the file name of the services are redundant */
437 return 0;
438 else
439 /* Everything else we assume to be normal service names */
440 r = sysv_translate_name(n);
441
442 if (!r)
443 return -ENOMEM;
444
445finish:
446 *_r = r;
447
448 return 1;
449}
450
451static int sysv_fix_order(Service *s) {
452 Unit *other;
453 int r;
454
455 assert(s);
456
457 if (s->sysv_start_priority < 0)
458 return 0;
459
460 /* For each pair of services where at least one lacks a LSB
461 * header, we use the start priority value to order things. */
462
463 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
464 Service *t;
465 UnitDependency d;
466 bool special_s, special_t;
467
468 t = SERVICE(other);
469
470 if (s == t)
471 continue;
472
473 if (UNIT(t)->load_state != UNIT_LOADED)
474 continue;
475
476 if (t->sysv_start_priority < 0)
477 continue;
478
479 /* If both units have modern headers we don't care
480 * about the priorities */
481 if ((UNIT(s)->fragment_path || s->sysv_has_lsb) &&
482 (UNIT(t)->fragment_path || t->sysv_has_lsb))
483 continue;
484
485 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
486 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
487
488 if (special_t && !special_s)
489 d = UNIT_AFTER;
490 else if (special_s && !special_t)
491 d = UNIT_BEFORE;
492 else if (t->sysv_start_priority < s->sysv_start_priority)
493 d = UNIT_AFTER;
494 else if (t->sysv_start_priority > s->sysv_start_priority)
495 d = UNIT_BEFORE;
496 else
497 continue;
498
499 /* FIXME: Maybe we should compare the name here lexicographically? */
500
501 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
502 return r;
503 }
504
505 return 0;
506}
507
508static ExecCommand *exec_command_new(const char *path, const char *arg1) {
509 ExecCommand *c;
510
511 if (!(c = new0(ExecCommand, 1)))
512 return NULL;
513
514 if (!(c->path = strdup(path))) {
515 free(c);
516 return NULL;
517 }
518
519 if (!(c->argv = strv_new(path, arg1, NULL))) {
520 free(c->path);
521 free(c);
522 return NULL;
523 }
524
525 return c;
526}
527
528static int sysv_exec_commands(Service *s) {
529 ExecCommand *c;
530
531 assert(s);
532 assert(s->is_sysv);
533 assert(UNIT(s)->source_path);
534
535 c = exec_command_new(UNIT(s)->source_path, "start");
536 if (!c)
537 return -ENOMEM;
538 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
539
540 c = exec_command_new(UNIT(s)->source_path, "stop");
541 if (!c)
542 return -ENOMEM;
543 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
544
545 c = exec_command_new(UNIT(s)->source_path, "reload");
546 if (!c)
547 return -ENOMEM;
548 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
549
550 return 0;
551}
552
553static int service_load_sysv_path(Service *s, const char *path) {
554 FILE *f;
555 Unit *u;
556 unsigned line = 0;
557 int r;
558 enum {
559 NORMAL,
560 DESCRIPTION,
561 LSB,
562 LSB_DESCRIPTION
563 } state = NORMAL;
564 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
565 struct stat st;
566
567 assert(s);
568 assert(path);
569
570 u = UNIT(s);
571
572 f = fopen(path, "re");
573 if (!f) {
574 r = errno == ENOENT ? 0 : -errno;
575 goto finish;
576 }
577
578 if (fstat(fileno(f), &st) < 0) {
579 r = -errno;
580 goto finish;
581 }
582
583 free(u->source_path);
584 u->source_path = strdup(path);
585 if (!u->source_path) {
586 r = -ENOMEM;
587 goto finish;
588 }
589 u->source_mtime = timespec_load(&st.st_mtim);
590
591 if (null_or_empty(&st)) {
592 u->load_state = UNIT_MASKED;
593 r = 0;
594 goto finish;
595 }
596
597 s->is_sysv = true;
598
599 while (!feof(f)) {
600 char l[LINE_MAX], *t;
601
602 if (!fgets(l, sizeof(l), f)) {
603 if (feof(f))
604 break;
605
606 r = -errno;
607 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
608 goto finish;
609 }
610
611 line++;
612
613 t = strstrip(l);
614 if (*t != '#')
615 continue;
616
617 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
618 state = LSB;
619 s->sysv_has_lsb = true;
620 continue;
621 }
622
623 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
624 state = NORMAL;
625 continue;
626 }
627
628 t++;
629 t += strspn(t, WHITESPACE);
630
631 if (state == NORMAL) {
632
633 /* Try to parse Red Hat style chkconfig headers */
634
635 if (startswith_no_case(t, "chkconfig:")) {
636 int start_priority;
637 char runlevels[16], *k;
638
639 state = NORMAL;
640
641 if (sscanf(t+10, "%15s %i %*i",
642 runlevels,
643 &start_priority) != 2) {
644
645 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
646 continue;
647 }
648
649 /* A start priority gathered from the
650 * symlink farms is preferred over the
651 * data from the LSB header. */
652 if (start_priority < 0 || start_priority > 99)
653 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
654 else
655 s->sysv_start_priority = start_priority;
656
657 char_array_0(runlevels);
658 k = delete_chars(runlevels, WHITESPACE "-");
659
660 if (k[0]) {
661 char *d;
662
663 if (!(d = strdup(k))) {
664 r = -ENOMEM;
665 goto finish;
666 }
667
668 free(s->sysv_runlevels);
669 s->sysv_runlevels = d;
670 }
671
672 } else if (startswith_no_case(t, "description:")) {
673
674 size_t k = strlen(t);
675 char *d;
676 const char *j;
677
678 if (t[k-1] == '\\') {
679 state = DESCRIPTION;
680 t[k-1] = 0;
681 }
682
683 if ((j = strstrip(t+12)) && *j) {
684 if (!(d = strdup(j))) {
685 r = -ENOMEM;
686 goto finish;
687 }
688 } else
689 d = NULL;
690
691 free(chkconfig_description);
692 chkconfig_description = d;
693
694 } else if (startswith_no_case(t, "pidfile:")) {
695
696 char *fn;
697
698 state = NORMAL;
699
700 fn = strstrip(t+8);
701 if (!path_is_absolute(fn)) {
702 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
703 continue;
704 }
705
706 if (!(fn = strdup(fn))) {
707 r = -ENOMEM;
708 goto finish;
709 }
710
711 free(s->pid_file);
712 s->pid_file = fn;
713 }
714
715 } else if (state == DESCRIPTION) {
716
717 /* Try to parse Red Hat style description
718 * continuation */
719
720 size_t k = strlen(t);
721 char *j;
722
723 if (t[k-1] == '\\')
724 t[k-1] = 0;
725 else
726 state = NORMAL;
727
728 if ((j = strstrip(t)) && *j) {
729 char *d = NULL;
730
731 if (chkconfig_description)
732 d = strjoin(chkconfig_description, " ", j, NULL);
733 else
734 d = strdup(j);
735
736 if (!d) {
737 r = -ENOMEM;
738 goto finish;
739 }
740
741 free(chkconfig_description);
742 chkconfig_description = d;
743 }
744
745 } else if (state == LSB || state == LSB_DESCRIPTION) {
746
747 if (startswith_no_case(t, "Provides:")) {
748 char *i, *w;
749 size_t z;
750
751 state = LSB;
752
753 FOREACH_WORD_QUOTED(w, z, t+9, i) {
754 char *n, *m;
755
756 if (!(n = strndup(w, z))) {
757 r = -ENOMEM;
758 goto finish;
759 }
760
761 r = sysv_translate_facility(n, path_get_file_name(path), &m);
762 free(n);
763
764 if (r < 0)
765 goto finish;
766
767 if (r == 0)
768 continue;
769
770 if (unit_name_to_type(m) == UNIT_SERVICE)
771 r = unit_add_name(u, m);
772 else
773 /* NB: SysV targets
774 * which are provided
775 * by a service are
776 * pulled in by the
777 * services, as an
778 * indication that the
779 * generic service is
780 * now available. This
781 * is strictly
782 * one-way. The
783 * targets do NOT pull
784 * in the SysV
785 * services! */
786 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
787
788 if (r < 0)
789 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
790
791 free(m);
792 }
793
794 } else if (startswith_no_case(t, "Required-Start:") ||
795 startswith_no_case(t, "Should-Start:") ||
796 startswith_no_case(t, "X-Start-Before:") ||
797 startswith_no_case(t, "X-Start-After:")) {
798 char *i, *w;
799 size_t z;
800
801 state = LSB;
802
803 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
804 char *n, *m;
805
806 if (!(n = strndup(w, z))) {
807 r = -ENOMEM;
808 goto finish;
809 }
810
811 r = sysv_translate_facility(n, path_get_file_name(path), &m);
812
813 if (r < 0) {
814 log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r));
815 free(n);
816 continue;
817 }
818
819 free(n);
820
821 if (r == 0)
822 continue;
823
824 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
825
826 if (r < 0)
827 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
828
829 free(m);
830 }
831 } else if (startswith_no_case(t, "Default-Start:")) {
832 char *k, *d;
833
834 state = LSB;
835
836 k = delete_chars(t+14, WHITESPACE "-");
837
838 if (k[0] != 0) {
839 if (!(d = strdup(k))) {
840 r = -ENOMEM;
841 goto finish;
842 }
843
844 free(s->sysv_runlevels);
845 s->sysv_runlevels = d;
846 }
847
848 } else if (startswith_no_case(t, "Description:")) {
849 char *d, *j;
850
851 state = LSB_DESCRIPTION;
852
853 if ((j = strstrip(t+12)) && *j) {
854 if (!(d = strdup(j))) {
855 r = -ENOMEM;
856 goto finish;
857 }
858 } else
859 d = NULL;
860
861 free(long_description);
862 long_description = d;
863
864 } else if (startswith_no_case(t, "Short-Description:")) {
865 char *d, *j;
866
867 state = LSB;
868
869 if ((j = strstrip(t+18)) && *j) {
870 if (!(d = strdup(j))) {
871 r = -ENOMEM;
872 goto finish;
873 }
874 } else
875 d = NULL;
876
877 free(short_description);
878 short_description = d;
879
880 } else if (state == LSB_DESCRIPTION) {
881
882 if (startswith(l, "#\t") || startswith(l, "# ")) {
883 char *j;
884
885 if ((j = strstrip(t)) && *j) {
886 char *d = NULL;
887
888 if (long_description)
889 d = strjoin(long_description, " ", t, NULL);
890 else
891 d = strdup(j);
892
893 if (!d) {
894 r = -ENOMEM;
895 goto finish;
896 }
897
898 free(long_description);
899 long_description = d;
900 }
901
902 } else
903 state = LSB;
904 }
905 }
906 }
907
908 if ((r = sysv_exec_commands(s)) < 0)
909 goto finish;
910 if (s->sysv_runlevels &&
911 chars_intersect(RUNLEVELS_BOOT, s->sysv_runlevels) &&
912 chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
913 /* Service has both boot and "up" runlevels
914 configured. Kill the "up" ones. */
915 delete_chars(s->sysv_runlevels, RUNLEVELS_UP);
916 }
917
918 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
919 /* If there a runlevels configured for this service
920 * but none of the standard ones, then we assume this
921 * is some special kind of service (which might be
922 * needed for early boot) and don't create any links
923 * to it. */
924
925 UNIT(s)->default_dependencies = false;
926
927 /* Don't timeout special services during boot (like fsck) */
928 s->timeout_start_usec = 0;
929 s->timeout_stop_usec = 0;
930 } else {
931 s->timeout_start_usec = DEFAULT_SYSV_TIMEOUT_USEC;
932 s->timeout_stop_usec = DEFAULT_SYSV_TIMEOUT_USEC;
933 }
934
935
936 /* Special setting for all SysV services */
937 s->type = SERVICE_FORKING;
938 s->remain_after_exit = !s->pid_file;
939 s->guess_main_pid = false;
940 s->restart = SERVICE_RESTART_NO;
941 s->exec_context.ignore_sigpipe = false;
942 s->kill_context.kill_mode = KILL_PROCESS;
943
944 /* We use the long description only if
945 * no short description is set. */
946
947 if (short_description)
948 description = short_description;
949 else if (chkconfig_description)
950 description = chkconfig_description;
951 else if (long_description)
952 description = long_description;
953 else
954 description = NULL;
955
956 if (description) {
957 char *d;
958
959 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
960 r = -ENOMEM;
961 goto finish;
962 }
963
964 u->description = d;
965 }
966
967 /* The priority that has been set in /etc/rcN.d/ hierarchies
968 * takes precedence over what is stored as default in the LSB
969 * header */
970 if (s->sysv_start_priority_from_rcnd >= 0)
971 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
972
973 u->load_state = UNIT_LOADED;
974 r = 0;
975
976finish:
977
978 if (f)
979 fclose(f);
980
981 free(short_description);
982 free(long_description);
983 free(chkconfig_description);
984
985 return r;
986}
987
988static int service_load_sysv_name(Service *s, const char *name) {
989 char **p;
990
991 assert(s);
992 assert(name);
993
994 /* For SysV services we strip the boot.*, rc.* and *.sh
995 * prefixes/suffixes. */
996#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
997 if (endswith(name, ".sh.service"))
998 return -ENOENT;
999#endif
1000
1001#ifdef TARGET_SUSE
1002 if (startswith(name, "boot."))
1003 return -ENOENT;
1004#endif
1005
1006#ifdef TARGET_FRUGALWARE
1007 if (startswith(name, "rc."))
1008 return -ENOENT;
1009#endif
1010
1011 STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
1012 char *path;
1013 int r;
1014
1015 path = strjoin(*p, "/", name, NULL);
1016 if (!path)
1017 return -ENOMEM;
1018
1019 assert(endswith(path, ".service"));
1020 path[strlen(path)-8] = 0;
1021
1022 r = service_load_sysv_path(s, path);
1023
1024#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
1025 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1026 /* Try Debian style *.sh source'able init scripts */
1027 strcat(path, ".sh");
1028 r = service_load_sysv_path(s, path);
1029 }
1030#endif
1031 free(path);
1032
1033#ifdef TARGET_SUSE
1034 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1035 /* Try SUSE style boot.* init scripts */
1036
1037 path = strjoin(*p, "/boot.", name, NULL);
1038 if (!path)
1039 return -ENOMEM;
1040
1041 /* Drop .service suffix */
1042 path[strlen(path)-8] = 0;
1043 r = service_load_sysv_path(s, path);
1044 free(path);
1045 }
1046#endif
1047
1048#ifdef TARGET_FRUGALWARE
1049 if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
1050 /* Try Frugalware style rc.* init scripts */
1051
1052 path = strjoin(*p, "/rc.", name, NULL);
1053 if (!path)
1054 return -ENOMEM;
1055
1056 /* Drop .service suffix */
1057 path[strlen(path)-8] = 0;
1058 r = service_load_sysv_path(s, path);
1059 free(path);
1060 }
1061#endif
1062
1063 if (r < 0)
1064 return r;
1065
1066 if ((UNIT(s)->load_state != UNIT_STUB))
1067 break;
1068 }
1069
1070 return 0;
1071}
1072
1073static int service_load_sysv(Service *s) {
1074 const char *t;
1075 Iterator i;
1076 int r;
1077
1078 assert(s);
1079
1080 /* Load service data from SysV init scripts, preferably with
1081 * LSB headers ... */
1082
1083 if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
1084 return 0;
1085
1086 if ((t = UNIT(s)->id))
1087 if ((r = service_load_sysv_name(s, t)) < 0)
1088 return r;
1089
1090 if (UNIT(s)->load_state == UNIT_STUB)
1091 SET_FOREACH(t, UNIT(s)->names, i) {
1092 if (t == UNIT(s)->id)
1093 continue;
1094
1095 if ((r = service_load_sysv_name(s, t)) < 0)
1096 return r;
1097
1098 if (UNIT(s)->load_state != UNIT_STUB)
1099 break;
1100 }
1101
1102 return 0;
1103}
1104#endif
1105
1106static int fsck_fix_order(Service *s) {
1107 Unit *other;
1108 int r;
1109
1110 assert(s);
1111
1112 if (s->fsck_passno <= 0)
1113 return 0;
1114
1115 /* For each pair of services where both have an fsck priority
1116 * we order things based on it. */
1117
1118 LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
1119 Service *t;
1120 UnitDependency d;
1121
1122 t = SERVICE(other);
1123
1124 if (s == t)
1125 continue;
1126
1127 if (UNIT(t)->load_state != UNIT_LOADED)
1128 continue;
1129
1130 if (t->fsck_passno <= 0)
1131 continue;
1132
1133 if (t->fsck_passno < s->fsck_passno)
1134 d = UNIT_AFTER;
1135 else if (t->fsck_passno > s->fsck_passno)
1136 d = UNIT_BEFORE;
1137 else
1138 continue;
1139
1140 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
1141 return r;
1142 }
1143
1144 return 0;
1145}
1146
1147static int service_verify(Service *s) {
1148 assert(s);
1149
1150 if (UNIT(s)->load_state != UNIT_LOADED)
1151 return 0;
1152
1153 if (!s->exec_command[SERVICE_EXEC_START]) {
1154 log_error("%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
1155 return -EINVAL;
1156 }
1157
1158 if (s->type != SERVICE_ONESHOT &&
1159 s->exec_command[SERVICE_EXEC_START]->command_next) {
1160 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1161 return -EINVAL;
1162 }
1163
1164 if (s->type == SERVICE_ONESHOT &&
1165 s->exec_command[SERVICE_EXEC_RELOAD]) {
1166 log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
1167 return -EINVAL;
1168 }
1169
1170 if (s->type == SERVICE_DBUS && !s->bus_name) {
1171 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id);
1172 return -EINVAL;
1173 }
1174
1175 if (s->bus_name && s->type != SERVICE_DBUS)
1176 log_warning("%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id);
1177
1178 if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) {
1179 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
1180 return -EINVAL;
1181 }
1182
1183 return 0;
1184}
1185
1186static int service_add_default_dependencies(Service *s) {
1187 int r;
1188
1189 assert(s);
1190
1191 /* Add a number of automatic dependencies useful for the
1192 * majority of services. */
1193
1194 /* First, pull in base system */
1195 if (UNIT(s)->manager->running_as == MANAGER_SYSTEM) {
1196
1197 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1198 return r;
1199
1200 } else if (UNIT(s)->manager->running_as == MANAGER_USER) {
1201
1202 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1203 return r;
1204 }
1205
1206 /* Second, activate normal shutdown */
1207 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1208}
1209
1210static void service_fix_output(Service *s) {
1211 assert(s);
1212
1213 /* If nothing has been explicitly configured, patch default
1214 * output in. If input is socket/tty we avoid this however,
1215 * since in that case we want output to default to the same
1216 * place as we read input from. */
1217
1218 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
1219 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1220 s->exec_context.std_input == EXEC_INPUT_NULL)
1221 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
1222
1223 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
1224 s->exec_context.std_input == EXEC_INPUT_NULL)
1225 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
1226}
1227
1228static int service_load(Unit *u) {
1229 int r;
1230 Service *s = SERVICE(u);
1231
1232 assert(s);
1233
1234 /* Load a .service file */
1235 if ((r = unit_load_fragment(u)) < 0)
1236 return r;
1237
1238#ifdef HAVE_SYSV_COMPAT
1239 /* Load a classic init script as a fallback, if we couldn't find anything */
1240 if (u->load_state == UNIT_STUB)
1241 if ((r = service_load_sysv(s)) < 0)
1242 return r;
1243#endif
1244
1245 /* Still nothing found? Then let's give up */
1246 if (u->load_state == UNIT_STUB)
1247 return -ENOENT;
1248
1249 /* We were able to load something, then let's add in the
1250 * dropin directories. */
1251 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1252 return r;
1253
1254 /* This is a new unit? Then let's add in some extras */
1255 if (u->load_state == UNIT_LOADED) {
1256 if (s->type == _SERVICE_TYPE_INVALID)
1257 s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE;
1258
1259 /* Oneshot services have disabled start timeout by default */
1260 if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined)
1261 s->timeout_start_usec = 0;
1262
1263 service_fix_output(s);
1264
1265 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1266 return r;
1267
1268 if ((r = unit_add_default_cgroups(u)) < 0)
1269 return r;
1270
1271#ifdef HAVE_SYSV_COMPAT
1272 if ((r = sysv_fix_order(s)) < 0)
1273 return r;
1274#endif
1275
1276 if ((r = fsck_fix_order(s)) < 0)
1277 return r;
1278
1279 if (s->bus_name)
1280 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1281 return r;
1282
1283 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1284 s->notify_access = NOTIFY_MAIN;
1285
1286 if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
1287 s->notify_access = NOTIFY_MAIN;
1288
1289 if (s->type == SERVICE_DBUS || s->bus_name)
1290 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
1291 return r;
1292
1293 if (UNIT(s)->default_dependencies)
1294 if ((r = service_add_default_dependencies(s)) < 0)
1295 return r;
1296
1297 r = unit_exec_context_defaults(u, &s->exec_context);
1298 if (r < 0)
1299 return r;
1300 }
1301
1302 return service_verify(s);
1303}
1304
1305static void service_dump(Unit *u, FILE *f, const char *prefix) {
1306
1307 ServiceExecCommand c;
1308 Service *s = SERVICE(u);
1309 const char *prefix2;
1310 char *p2;
1311
1312 assert(s);
1313
1314 p2 = strappend(prefix, "\t");
1315 prefix2 = p2 ? p2 : prefix;
1316
1317 fprintf(f,
1318 "%sService State: %s\n"
1319 "%sResult: %s\n"
1320 "%sReload Result: %s\n"
1321 "%sPermissionsStartOnly: %s\n"
1322 "%sRootDirectoryStartOnly: %s\n"
1323 "%sRemainAfterExit: %s\n"
1324 "%sGuessMainPID: %s\n"
1325 "%sType: %s\n"
1326 "%sRestart: %s\n"
1327 "%sNotifyAccess: %s\n",
1328 prefix, service_state_to_string(s->state),
1329 prefix, service_result_to_string(s->result),
1330 prefix, service_result_to_string(s->reload_result),
1331 prefix, yes_no(s->permissions_start_only),
1332 prefix, yes_no(s->root_directory_start_only),
1333 prefix, yes_no(s->remain_after_exit),
1334 prefix, yes_no(s->guess_main_pid),
1335 prefix, service_type_to_string(s->type),
1336 prefix, service_restart_to_string(s->restart),
1337 prefix, notify_access_to_string(s->notify_access));
1338
1339 if (s->control_pid > 0)
1340 fprintf(f,
1341 "%sControl PID: %lu\n",
1342 prefix, (unsigned long) s->control_pid);
1343
1344 if (s->main_pid > 0)
1345 fprintf(f,
1346 "%sMain PID: %lu\n"
1347 "%sMain PID Known: %s\n"
1348 "%sMain PID Alien: %s\n",
1349 prefix, (unsigned long) s->main_pid,
1350 prefix, yes_no(s->main_pid_known),
1351 prefix, yes_no(s->main_pid_alien));
1352
1353 if (s->pid_file)
1354 fprintf(f,
1355 "%sPIDFile: %s\n",
1356 prefix, s->pid_file);
1357
1358 if (s->bus_name)
1359 fprintf(f,
1360 "%sBusName: %s\n"
1361 "%sBus Name Good: %s\n",
1362 prefix, s->bus_name,
1363 prefix, yes_no(s->bus_name_good));
1364
1365 kill_context_dump(&s->kill_context, f, prefix);
1366 exec_context_dump(&s->exec_context, f, prefix);
1367
1368 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1369
1370 if (!s->exec_command[c])
1371 continue;
1372
1373 fprintf(f, "%s-> %s:\n",
1374 prefix, service_exec_command_to_string(c));
1375
1376 exec_command_dump_list(s->exec_command[c], f, prefix2);
1377 }
1378
1379#ifdef HAVE_SYSV_COMPAT
1380 if (s->is_sysv)
1381 fprintf(f,
1382 "%sSysV Init Script has LSB Header: %s\n"
1383 "%sSysVEnabled: %s\n",
1384 prefix, yes_no(s->sysv_has_lsb),
1385 prefix, yes_no(s->sysv_enabled));
1386
1387 if (s->sysv_start_priority >= 0)
1388 fprintf(f,
1389 "%sSysVStartPriority: %i\n",
1390 prefix, s->sysv_start_priority);
1391
1392 if (s->sysv_runlevels)
1393 fprintf(f, "%sSysVRunLevels: %s\n",
1394 prefix, s->sysv_runlevels);
1395#endif
1396
1397 if (s->fsck_passno > 0)
1398 fprintf(f,
1399 "%sFsckPassNo: %i\n",
1400 prefix, s->fsck_passno);
1401
1402 if (s->status_text)
1403 fprintf(f, "%sStatus Text: %s\n",
1404 prefix, s->status_text);
1405
1406 free(p2);
1407}
1408
1409static int service_load_pid_file(Service *s, bool may_warn) {
1410 char *k;
1411 int r;
1412 pid_t pid;
1413
1414 assert(s);
1415
1416 if (!s->pid_file)
1417 return -ENOENT;
1418
1419 if ((r = read_one_line_file(s->pid_file, &k)) < 0) {
1420 if (may_warn)
1421 log_info("PID file %s not readable (yet?) after %s.",
1422 s->pid_file, service_state_to_string(s->state));
1423 return r;
1424 }
1425
1426 r = parse_pid(k, &pid);
1427 free(k);
1428
1429 if (r < 0)
1430 return r;
1431
1432 if (kill(pid, 0) < 0 && errno != EPERM) {
1433 if (may_warn)
1434 log_info("PID %lu read from file %s does not exist.",
1435 (unsigned long) pid, s->pid_file);
1436 return -ESRCH;
1437 }
1438
1439 if (s->main_pid_known) {
1440 if (pid == s->main_pid)
1441 return 0;
1442
1443 log_debug("Main PID changing: %lu -> %lu",
1444 (unsigned long) s->main_pid, (unsigned long) pid);
1445 service_unwatch_main_pid(s);
1446 s->main_pid_known = false;
1447 } else
1448 log_debug("Main PID loaded: %lu", (unsigned long) pid);
1449
1450 if ((r = service_set_main_pid(s, pid)) < 0)
1451 return r;
1452
1453 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1454 /* FIXME: we need to do something here */
1455 return r;
1456
1457 return 0;
1458}
1459
1460static int service_search_main_pid(Service *s) {
1461 pid_t pid;
1462 int r;
1463
1464 assert(s);
1465
1466 /* If we know it anyway, don't ever fallback to unreliable
1467 * heuristics */
1468 if (s->main_pid_known)
1469 return 0;
1470
1471 if (!s->guess_main_pid)
1472 return 0;
1473
1474 assert(s->main_pid <= 0);
1475
1476 if ((pid = cgroup_bonding_search_main_pid_list(UNIT(s)->cgroup_bondings)) <= 0)
1477 return -ENOENT;
1478
1479 log_debug("Main PID guessed: %lu", (unsigned long) pid);
1480 if ((r = service_set_main_pid(s, pid)) < 0)
1481 return r;
1482
1483 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1484 /* FIXME: we need to do something here */
1485 return r;
1486
1487 return 0;
1488}
1489
1490static void service_notify_sockets_dead(Service *s, bool failed_permanent) {
1491 Iterator i;
1492 Unit *u;
1493
1494 assert(s);
1495
1496 /* Notifies all our sockets when we die */
1497
1498 if (s->socket_fd >= 0)
1499 return;
1500
1501 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i)
1502 if (u->type == UNIT_SOCKET)
1503 socket_notify_service_dead(SOCKET(u), failed_permanent);
1504
1505 return;
1506}
1507
1508static void service_set_state(Service *s, ServiceState state) {
1509 ServiceState old_state;
1510 const UnitActiveState *table;
1511 assert(s);
1512
1513 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
1514
1515 old_state = s->state;
1516 s->state = state;
1517
1518 service_unwatch_pid_file(s);
1519
1520 if (state != SERVICE_START_PRE &&
1521 state != SERVICE_START &&
1522 state != SERVICE_START_POST &&
1523 state != SERVICE_RELOAD &&
1524 state != SERVICE_STOP &&
1525 state != SERVICE_STOP_SIGTERM &&
1526 state != SERVICE_STOP_SIGKILL &&
1527 state != SERVICE_STOP_POST &&
1528 state != SERVICE_FINAL_SIGTERM &&
1529 state != SERVICE_FINAL_SIGKILL &&
1530 state != SERVICE_AUTO_RESTART)
1531 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1532
1533 if (state != SERVICE_START &&
1534 state != SERVICE_START_POST &&
1535 state != SERVICE_RUNNING &&
1536 state != SERVICE_RELOAD &&
1537 state != SERVICE_STOP &&
1538 state != SERVICE_STOP_SIGTERM &&
1539 state != SERVICE_STOP_SIGKILL) {
1540 service_unwatch_main_pid(s);
1541 s->main_command = NULL;
1542 }
1543
1544 if (state != SERVICE_START_PRE &&
1545 state != SERVICE_START &&
1546 state != SERVICE_START_POST &&
1547 state != SERVICE_RELOAD &&
1548 state != SERVICE_STOP &&
1549 state != SERVICE_STOP_SIGTERM &&
1550 state != SERVICE_STOP_SIGKILL &&
1551 state != SERVICE_STOP_POST &&
1552 state != SERVICE_FINAL_SIGTERM &&
1553 state != SERVICE_FINAL_SIGKILL) {
1554 service_unwatch_control_pid(s);
1555 s->control_command = NULL;
1556 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1557 }
1558
1559 if (state == SERVICE_DEAD ||
1560 state == SERVICE_STOP ||
1561 state == SERVICE_STOP_SIGTERM ||
1562 state == SERVICE_STOP_SIGKILL ||
1563 state == SERVICE_STOP_POST ||
1564 state == SERVICE_FINAL_SIGTERM ||
1565 state == SERVICE_FINAL_SIGKILL ||
1566 state == SERVICE_FAILED ||
1567 state == SERVICE_AUTO_RESTART)
1568 service_notify_sockets_dead(s, false);
1569
1570 if (state != SERVICE_START_PRE &&
1571 state != SERVICE_START &&
1572 state != SERVICE_START_POST &&
1573 state != SERVICE_RUNNING &&
1574 state != SERVICE_RELOAD &&
1575 state != SERVICE_STOP &&
1576 state != SERVICE_STOP_SIGTERM &&
1577 state != SERVICE_STOP_SIGKILL &&
1578 state != SERVICE_STOP_POST &&
1579 state != SERVICE_FINAL_SIGTERM &&
1580 state != SERVICE_FINAL_SIGKILL &&
1581 !(state == SERVICE_DEAD && UNIT(s)->job)) {
1582 service_close_socket_fd(s);
1583 service_connection_unref(s);
1584 }
1585
1586 if (state == SERVICE_STOP)
1587 service_stop_watchdog(s);
1588
1589 /* For the inactive states unit_notify() will trim the cgroup,
1590 * but for exit we have to do that ourselves... */
1591 if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
1592 cgroup_bonding_trim_list(UNIT(s)->cgroup_bondings, true);
1593
1594 if (old_state != state)
1595 log_debug("%s changed %s -> %s", UNIT(s)->id, service_state_to_string(old_state), service_state_to_string(state));
1596
1597 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
1598 s->reload_result = SERVICE_SUCCESS;
1599}
1600
1601static int service_coldplug(Unit *u) {
1602 Service *s = SERVICE(u);
1603 int r;
1604
1605 assert(s);
1606 assert(s->state == SERVICE_DEAD);
1607
1608 if (s->deserialized_state != s->state) {
1609
1610 if (s->deserialized_state == SERVICE_START_PRE ||
1611 s->deserialized_state == SERVICE_START ||
1612 s->deserialized_state == SERVICE_START_POST ||
1613 s->deserialized_state == SERVICE_RELOAD ||
1614 s->deserialized_state == SERVICE_STOP ||
1615 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1616 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1617 s->deserialized_state == SERVICE_STOP_POST ||
1618 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1619 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1620 s->deserialized_state == SERVICE_AUTO_RESTART) {
1621 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_start_usec > 0) {
1622 usec_t k;
1623
1624 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_start_usec;
1625
1626 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1627 return r;
1628 }
1629 }
1630
1631 if ((s->deserialized_state == SERVICE_START &&
1632 (s->type == SERVICE_FORKING ||
1633 s->type == SERVICE_DBUS ||
1634 s->type == SERVICE_ONESHOT ||
1635 s->type == SERVICE_NOTIFY)) ||
1636 s->deserialized_state == SERVICE_START_POST ||
1637 s->deserialized_state == SERVICE_RUNNING ||
1638 s->deserialized_state == SERVICE_RELOAD ||
1639 s->deserialized_state == SERVICE_STOP ||
1640 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1641 s->deserialized_state == SERVICE_STOP_SIGKILL)
1642 if (s->main_pid > 0)
1643 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1644 return r;
1645
1646 if (s->deserialized_state == SERVICE_START_PRE ||
1647 s->deserialized_state == SERVICE_START ||
1648 s->deserialized_state == SERVICE_START_POST ||
1649 s->deserialized_state == SERVICE_RELOAD ||
1650 s->deserialized_state == SERVICE_STOP ||
1651 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1652 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1653 s->deserialized_state == SERVICE_STOP_POST ||
1654 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1655 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1656 if (s->control_pid > 0)
1657 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1658 return r;
1659
1660 if (s->deserialized_state == SERVICE_START_POST ||
1661 s->deserialized_state == SERVICE_RUNNING)
1662 service_handle_watchdog(s);
1663
1664 service_set_state(s, s->deserialized_state);
1665 }
1666 return 0;
1667}
1668
1669static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1670 Iterator i;
1671 int r;
1672 int *rfds = NULL;
1673 unsigned rn_fds = 0;
1674 Unit *u;
1675
1676 assert(s);
1677 assert(fds);
1678 assert(n_fds);
1679
1680 if (s->socket_fd >= 0)
1681 return 0;
1682
1683 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1684 int *cfds;
1685 unsigned cn_fds;
1686 Socket *sock;
1687
1688 if (u->type != UNIT_SOCKET)
1689 continue;
1690
1691 sock = SOCKET(u);
1692
1693 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1694 goto fail;
1695
1696 if (!cfds)
1697 continue;
1698
1699 if (!rfds) {
1700 rfds = cfds;
1701 rn_fds = cn_fds;
1702 } else {
1703 int *t;
1704
1705 if (!(t = new(int, rn_fds+cn_fds))) {
1706 free(cfds);
1707 r = -ENOMEM;
1708 goto fail;
1709 }
1710
1711 memcpy(t, rfds, rn_fds * sizeof(int));
1712 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1713 free(rfds);
1714 free(cfds);
1715
1716 rfds = t;
1717 rn_fds = rn_fds+cn_fds;
1718 }
1719 }
1720
1721 *fds = rfds;
1722 *n_fds = rn_fds;
1723
1724 return 0;
1725
1726fail:
1727 free(rfds);
1728
1729 return r;
1730}
1731
1732static int service_spawn(
1733 Service *s,
1734 ExecCommand *c,
1735 bool timeout,
1736 bool pass_fds,
1737 bool apply_permissions,
1738 bool apply_chroot,
1739 bool apply_tty_stdin,
1740 bool set_notify_socket,
1741 bool is_control,
1742 pid_t *_pid) {
1743
1744 pid_t pid;
1745 int r;
1746 int *fds = NULL, *fdsbuf = NULL;
1747 unsigned n_fds = 0, n_env = 0;
1748 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1749
1750 assert(s);
1751 assert(c);
1752 assert(_pid);
1753
1754 if (pass_fds ||
1755 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1756 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1757 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1758
1759 if (s->socket_fd >= 0) {
1760 fds = &s->socket_fd;
1761 n_fds = 1;
1762 } else {
1763 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1764 goto fail;
1765
1766 fds = fdsbuf;
1767 }
1768 }
1769
1770 if (timeout && s->timeout_start_usec) {
1771 r = unit_watch_timer(UNIT(s), s->timeout_start_usec, &s->timer_watch);
1772 if (r < 0)
1773 goto fail;
1774 } else
1775 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1776
1777 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1778 r = -ENOMEM;
1779 goto fail;
1780 }
1781
1782 if (!(our_env = new0(char*, 4))) {
1783 r = -ENOMEM;
1784 goto fail;
1785 }
1786
1787 if (set_notify_socket)
1788 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
1789 r = -ENOMEM;
1790 goto fail;
1791 }
1792
1793 if (s->main_pid > 0)
1794 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1795 r = -ENOMEM;
1796 goto fail;
1797 }
1798
1799 if (s->watchdog_usec > 0)
1800 if (asprintf(our_env + n_env++, "WATCHDOG_USEC=%llu", (unsigned long long) s->watchdog_usec) < 0) {
1801 r = -ENOMEM;
1802 goto fail;
1803 }
1804
1805 if (!(final_env = strv_env_merge(2,
1806 UNIT(s)->manager->environment,
1807 our_env,
1808 NULL))) {
1809 r = -ENOMEM;
1810 goto fail;
1811 }
1812
1813 r = exec_spawn(c,
1814 argv,
1815 &s->exec_context,
1816 fds, n_fds,
1817 final_env,
1818 apply_permissions,
1819 apply_chroot,
1820 apply_tty_stdin,
1821 UNIT(s)->manager->confirm_spawn,
1822 UNIT(s)->cgroup_bondings,
1823 UNIT(s)->cgroup_attributes,
1824 is_control ? "control" : NULL,
1825 UNIT(s)->id,
1826 s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
1827 &pid);
1828
1829 if (r < 0)
1830 goto fail;
1831
1832
1833 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1834 /* FIXME: we need to do something here */
1835 goto fail;
1836
1837 free(fdsbuf);
1838 strv_free(argv);
1839 strv_free(our_env);
1840 strv_free(final_env);
1841
1842 *_pid = pid;
1843
1844 return 0;
1845
1846fail:
1847 free(fdsbuf);
1848 strv_free(argv);
1849 strv_free(our_env);
1850 strv_free(final_env);
1851
1852 if (timeout)
1853 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1854
1855 return r;
1856}
1857
1858static int main_pid_good(Service *s) {
1859 assert(s);
1860
1861 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1862 * don't know */
1863
1864 /* If we know the pid file, then lets just check if it is
1865 * still valid */
1866 if (s->main_pid_known) {
1867
1868 /* If it's an alien child let's check if it is still
1869 * alive ... */
1870 if (s->main_pid_alien)
1871 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1872
1873 /* .. otherwise assume we'll get a SIGCHLD for it,
1874 * which we really should wait for to collect exit
1875 * status and code */
1876 return s->main_pid > 0;
1877 }
1878
1879 /* We don't know the pid */
1880 return -EAGAIN;
1881}
1882
1883static int control_pid_good(Service *s) {
1884 assert(s);
1885
1886 return s->control_pid > 0;
1887}
1888
1889static int cgroup_good(Service *s) {
1890 int r;
1891
1892 assert(s);
1893
1894 if ((r = cgroup_bonding_is_empty_list(UNIT(s)->cgroup_bondings)) < 0)
1895 return r;
1896
1897 return !r;
1898}
1899
1900static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
1901 int r;
1902 assert(s);
1903
1904 if (f != SERVICE_SUCCESS)
1905 s->result = f;
1906
1907 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1908
1909 if (allow_restart &&
1910 !s->forbid_restart &&
1911 (s->restart == SERVICE_RESTART_ALWAYS ||
1912 (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
1913 (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
1914 (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
1915 s->result == SERVICE_FAILURE_CORE_DUMP))) &&
1916 (s->result != SERVICE_FAILURE_EXIT_CODE ||
1917 !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
1918 (s->result != SERVICE_FAILURE_SIGNAL ||
1919 !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))
1920 ) {
1921
1922 r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch);
1923 if (r < 0)
1924 goto fail;
1925
1926 service_set_state(s, SERVICE_AUTO_RESTART);
1927 }
1928
1929 s->forbid_restart = false;
1930
1931 return;
1932
1933fail:
1934 log_warning("%s failed to run install restart timer: %s", UNIT(s)->id, strerror(-r));
1935 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
1936}
1937
1938static void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
1939
1940static void service_enter_stop_post(Service *s, ServiceResult f) {
1941 int r;
1942 assert(s);
1943
1944 if (f != SERVICE_SUCCESS)
1945 s->result = f;
1946
1947 service_unwatch_control_pid(s);
1948
1949 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1950 s->control_command_id = SERVICE_EXEC_STOP_POST;
1951
1952 r = service_spawn(s,
1953 s->control_command,
1954 true,
1955 false,
1956 !s->permissions_start_only,
1957 !s->root_directory_start_only,
1958 true,
1959 false,
1960 true,
1961 &s->control_pid);
1962 if (r < 0)
1963 goto fail;
1964
1965
1966 service_set_state(s, SERVICE_STOP_POST);
1967 } else
1968 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
1969
1970 return;
1971
1972fail:
1973 log_warning("%s failed to run 'stop-post' task: %s", UNIT(s)->id, strerror(-r));
1974 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
1975}
1976
1977static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
1978 int r;
1979 Set *pid_set = NULL;
1980 bool wait_for_exit = false;
1981
1982 assert(s);
1983
1984 if (f != SERVICE_SUCCESS)
1985 s->result = f;
1986
1987 if (s->kill_context.kill_mode != KILL_NONE) {
1988 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->kill_context.kill_signal : SIGKILL;
1989
1990 if (s->main_pid > 0) {
1991 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
1992 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1993 else
1994 wait_for_exit = !s->main_pid_alien;
1995 }
1996
1997 if (s->control_pid > 0) {
1998 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1999 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
2000 else
2001 wait_for_exit = true;
2002 }
2003
2004 if (s->kill_context.kill_mode == KILL_CONTROL_GROUP) {
2005
2006 pid_set = set_new(trivial_hash_func, trivial_compare_func);
2007 if (!pid_set) {
2008 r = -ENOMEM;
2009 goto fail;
2010 }
2011
2012 /* Exclude the main/control pids from being killed via the cgroup */
2013 if (s->main_pid > 0)
2014 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
2015 goto fail;
2016
2017 if (s->control_pid > 0)
2018 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
2019 goto fail;
2020
2021 r = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, sig, true, false, pid_set, NULL);
2022 if (r < 0) {
2023 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
2024 log_warning("Failed to kill control group: %s", strerror(-r));
2025 } else if (r > 0)
2026 wait_for_exit = true;
2027
2028 set_free(pid_set);
2029 pid_set = NULL;
2030 }
2031 }
2032
2033 if (wait_for_exit) {
2034 if (s->timeout_stop_usec > 0) {
2035 r = unit_watch_timer(UNIT(s), s->timeout_stop_usec, &s->timer_watch);
2036 if (r < 0)
2037 goto fail;
2038 }
2039
2040 service_set_state(s, state);
2041 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2042 service_enter_stop_post(s, SERVICE_SUCCESS);
2043 else
2044 service_enter_dead(s, SERVICE_SUCCESS, true);
2045
2046 return;
2047
2048fail:
2049 log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
2050
2051 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
2052 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
2053 else
2054 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2055
2056 if (pid_set)
2057 set_free(pid_set);
2058}
2059
2060static void service_enter_stop(Service *s, ServiceResult f) {
2061 int r;
2062
2063 assert(s);
2064
2065 if (f != SERVICE_SUCCESS)
2066 s->result = f;
2067
2068 service_unwatch_control_pid(s);
2069
2070 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
2071 s->control_command_id = SERVICE_EXEC_STOP;
2072
2073 r = service_spawn(s,
2074 s->control_command,
2075 true,
2076 false,
2077 !s->permissions_start_only,
2078 !s->root_directory_start_only,
2079 false,
2080 false,
2081 true,
2082 &s->control_pid);
2083 if (r < 0)
2084 goto fail;
2085
2086 service_set_state(s, SERVICE_STOP);
2087 } else
2088 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2089
2090 return;
2091
2092fail:
2093 log_warning("%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
2094 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2095}
2096
2097static void service_enter_running(Service *s, ServiceResult f) {
2098 int main_pid_ok, cgroup_ok;
2099 assert(s);
2100
2101 if (f != SERVICE_SUCCESS)
2102 s->result = f;
2103
2104 main_pid_ok = main_pid_good(s);
2105 cgroup_ok = cgroup_good(s);
2106
2107 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
2108 (s->bus_name_good || s->type != SERVICE_DBUS))
2109 service_set_state(s, SERVICE_RUNNING);
2110 else if (s->remain_after_exit)
2111 service_set_state(s, SERVICE_EXITED);
2112 else
2113 service_enter_stop(s, SERVICE_SUCCESS);
2114}
2115
2116static void service_enter_start_post(Service *s) {
2117 int r;
2118 assert(s);
2119
2120 service_unwatch_control_pid(s);
2121
2122 if (s->watchdog_usec > 0)
2123 service_reset_watchdog(s);
2124
2125 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
2126 s->control_command_id = SERVICE_EXEC_START_POST;
2127
2128 r = service_spawn(s,
2129 s->control_command,
2130 true,
2131 false,
2132 !s->permissions_start_only,
2133 !s->root_directory_start_only,
2134 false,
2135 false,
2136 true,
2137 &s->control_pid);
2138 if (r < 0)
2139 goto fail;
2140
2141 service_set_state(s, SERVICE_START_POST);
2142 } else
2143 service_enter_running(s, SERVICE_SUCCESS);
2144
2145 return;
2146
2147fail:
2148 log_warning("%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
2149 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2150}
2151
2152static void service_enter_start(Service *s) {
2153 pid_t pid;
2154 int r;
2155 ExecCommand *c;
2156
2157 assert(s);
2158
2159 assert(s->exec_command[SERVICE_EXEC_START]);
2160 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2161
2162 if (s->type == SERVICE_FORKING)
2163 service_unwatch_control_pid(s);
2164 else
2165 service_unwatch_main_pid(s);
2166
2167 /* We want to ensure that nobody leaks processes from
2168 * START_PRE here, so let's go on a killing spree, People
2169 * should not spawn long running processes from START_PRE. */
2170 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2171
2172 if (s->type == SERVICE_FORKING) {
2173 s->control_command_id = SERVICE_EXEC_START;
2174 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2175
2176 s->main_command = NULL;
2177 } else {
2178 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2179 s->control_command = NULL;
2180
2181 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2182 }
2183
2184 r = service_spawn(s,
2185 c,
2186 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
2187 true,
2188 true,
2189 true,
2190 true,
2191 s->notify_access != NOTIFY_NONE,
2192 false,
2193 &pid);
2194 if (r < 0)
2195 goto fail;
2196
2197 if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
2198 /* For simple services we immediately start
2199 * the START_POST binaries. */
2200
2201 service_set_main_pid(s, pid);
2202 service_enter_start_post(s);
2203
2204 } else if (s->type == SERVICE_FORKING) {
2205
2206 /* For forking services we wait until the start
2207 * process exited. */
2208
2209 s->control_pid = pid;
2210 service_set_state(s, SERVICE_START);
2211
2212 } else if (s->type == SERVICE_ONESHOT ||
2213 s->type == SERVICE_DBUS ||
2214 s->type == SERVICE_NOTIFY) {
2215
2216 /* For oneshot services we wait until the start
2217 * process exited, too, but it is our main process. */
2218
2219 /* For D-Bus services we know the main pid right away,
2220 * but wait for the bus name to appear on the
2221 * bus. Notify services are similar. */
2222
2223 service_set_main_pid(s, pid);
2224 service_set_state(s, SERVICE_START);
2225 } else
2226 assert_not_reached("Unknown service type");
2227
2228 return;
2229
2230fail:
2231 log_warning("%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
2232 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2233}
2234
2235static void service_enter_start_pre(Service *s) {
2236 int r;
2237
2238 assert(s);
2239
2240 service_unwatch_control_pid(s);
2241
2242 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2243
2244 /* Before we start anything, let's clear up what might
2245 * be left from previous runs. */
2246 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
2247
2248 s->control_command_id = SERVICE_EXEC_START_PRE;
2249
2250 r = service_spawn(s,
2251 s->control_command,
2252 true,
2253 false,
2254 !s->permissions_start_only,
2255 !s->root_directory_start_only,
2256 true,
2257 false,
2258 true,
2259 &s->control_pid);
2260 if (r < 0)
2261 goto fail;
2262
2263 service_set_state(s, SERVICE_START_PRE);
2264 } else
2265 service_enter_start(s);
2266
2267 return;
2268
2269fail:
2270 log_warning("%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
2271 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2272}
2273
2274static void service_enter_restart(Service *s) {
2275 int r;
2276 DBusError error;
2277
2278 assert(s);
2279 dbus_error_init(&error);
2280
2281 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
2282 /* Don't restart things if we are going down anyway */
2283 log_info("Stop job pending for unit, delaying automatic restart.");
2284
2285 r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch);
2286 if (r < 0)
2287 goto fail;
2288
2289 return;
2290 }
2291
2292 /* Any units that are bound to this service must also be
2293 * restarted. We use JOB_RESTART (instead of the more obvious
2294 * JOB_START) here so that those dependency jobs will be added
2295 * as well. */
2296 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
2297 if (r < 0)
2298 goto fail;
2299
2300 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
2301 * it will be canceled as part of the service_stop() call that
2302 * is executed as part of JOB_RESTART. */
2303
2304 log_debug("%s scheduled restart job.", UNIT(s)->id);
2305 return;
2306
2307fail:
2308 log_warning("%s failed to schedule restart job: %s", UNIT(s)->id, bus_error(&error, -r));
2309 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
2310
2311 dbus_error_free(&error);
2312}
2313
2314static void service_enter_reload(Service *s) {
2315 int r;
2316
2317 assert(s);
2318
2319 service_unwatch_control_pid(s);
2320
2321 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2322 s->control_command_id = SERVICE_EXEC_RELOAD;
2323
2324 r = service_spawn(s,
2325 s->control_command,
2326 true,
2327 false,
2328 !s->permissions_start_only,
2329 !s->root_directory_start_only,
2330 false,
2331 false,
2332 true,
2333 &s->control_pid);
2334 if (r < 0)
2335 goto fail;
2336
2337 service_set_state(s, SERVICE_RELOAD);
2338 } else
2339 service_enter_running(s, SERVICE_SUCCESS);
2340
2341 return;
2342
2343fail:
2344 log_warning("%s failed to run 'reload' task: %s", UNIT(s)->id, strerror(-r));
2345 s->reload_result = SERVICE_FAILURE_RESOURCES;
2346 service_enter_running(s, SERVICE_SUCCESS);
2347}
2348
2349static void service_run_next_control(Service *s) {
2350 int r;
2351
2352 assert(s);
2353 assert(s->control_command);
2354 assert(s->control_command->command_next);
2355
2356 assert(s->control_command_id != SERVICE_EXEC_START);
2357
2358 s->control_command = s->control_command->command_next;
2359 service_unwatch_control_pid(s);
2360
2361 r = service_spawn(s,
2362 s->control_command,
2363 true,
2364 false,
2365 !s->permissions_start_only,
2366 !s->root_directory_start_only,
2367 s->control_command_id == SERVICE_EXEC_START_PRE ||
2368 s->control_command_id == SERVICE_EXEC_STOP_POST,
2369 false,
2370 true,
2371 &s->control_pid);
2372 if (r < 0)
2373 goto fail;
2374
2375 return;
2376
2377fail:
2378 log_warning("%s failed to run next control task: %s", UNIT(s)->id, strerror(-r));
2379
2380 if (s->state == SERVICE_START_PRE)
2381 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2382 else if (s->state == SERVICE_STOP)
2383 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2384 else if (s->state == SERVICE_STOP_POST)
2385 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
2386 else if (s->state == SERVICE_RELOAD) {
2387 s->reload_result = SERVICE_FAILURE_RESOURCES;
2388 service_enter_running(s, SERVICE_SUCCESS);
2389 } else
2390 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2391}
2392
2393static void service_run_next_main(Service *s) {
2394 pid_t pid;
2395 int r;
2396
2397 assert(s);
2398 assert(s->main_command);
2399 assert(s->main_command->command_next);
2400 assert(s->type == SERVICE_ONESHOT);
2401
2402 s->main_command = s->main_command->command_next;
2403 service_unwatch_main_pid(s);
2404
2405 r = service_spawn(s,
2406 s->main_command,
2407 true,
2408 true,
2409 true,
2410 true,
2411 true,
2412 s->notify_access != NOTIFY_NONE,
2413 false,
2414 &pid);
2415 if (r < 0)
2416 goto fail;
2417
2418 service_set_main_pid(s, pid);
2419
2420 return;
2421
2422fail:
2423 log_warning("%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
2424 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2425}
2426
2427static int service_start_limit_test(Service *s) {
2428 assert(s);
2429
2430 if (ratelimit_test(&s->start_limit))
2431 return 0;
2432
2433 switch (s->start_limit_action) {
2434
2435 case SERVICE_START_LIMIT_NONE:
2436 log_warning("%s start request repeated too quickly, refusing to start.", UNIT(s)->id);
2437 break;
2438
2439 case SERVICE_START_LIMIT_REBOOT: {
2440 DBusError error;
2441 int r;
2442
2443 dbus_error_init(&error);
2444
2445 log_warning("%s start request repeated too quickly, rebooting.", UNIT(s)->id);
2446
2447 r = manager_add_job_by_name(UNIT(s)->manager, JOB_START, SPECIAL_REBOOT_TARGET, JOB_REPLACE, true, &error, NULL);
2448 if (r < 0) {
2449 log_error("Failed to reboot: %s.", bus_error(&error, r));
2450 dbus_error_free(&error);
2451 }
2452
2453 break;
2454 }
2455
2456 case SERVICE_START_LIMIT_REBOOT_FORCE:
2457 log_warning("%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
2458 UNIT(s)->manager->exit_code = MANAGER_REBOOT;
2459 break;
2460
2461 case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
2462 log_warning("%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
2463 reboot(RB_AUTOBOOT);
2464 break;
2465
2466 default:
2467 log_error("start limit action=%i", s->start_limit_action);
2468 assert_not_reached("Unknown StartLimitAction.");
2469 }
2470
2471 return -ECANCELED;
2472}
2473
2474static int service_start(Unit *u) {
2475 Service *s = SERVICE(u);
2476 int r;
2477
2478 assert(s);
2479
2480 /* We cannot fulfill this request right now, try again later
2481 * please! */
2482 if (s->state == SERVICE_STOP ||
2483 s->state == SERVICE_STOP_SIGTERM ||
2484 s->state == SERVICE_STOP_SIGKILL ||
2485 s->state == SERVICE_STOP_POST ||
2486 s->state == SERVICE_FINAL_SIGTERM ||
2487 s->state == SERVICE_FINAL_SIGKILL)
2488 return -EAGAIN;
2489
2490 /* Already on it! */
2491 if (s->state == SERVICE_START_PRE ||
2492 s->state == SERVICE_START ||
2493 s->state == SERVICE_START_POST)
2494 return 0;
2495
2496 /* A service that will be restarted must be stopped first to
2497 * trigger BindsTo and/or OnFailure dependencies. If a user
2498 * does not want to wait for the holdoff time to elapse, the
2499 * service should be manually restarted, not started. We
2500 * simply return EAGAIN here, so that any start jobs stay
2501 * queued, and assume that the auto restart timer will
2502 * eventually trigger the restart. */
2503 if (s->state == SERVICE_AUTO_RESTART)
2504 return -EAGAIN;
2505
2506 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
2507
2508 /* Make sure we don't enter a busy loop of some kind. */
2509 r = service_start_limit_test(s);
2510 if (r < 0) {
2511 service_notify_sockets_dead(s, true);
2512 return r;
2513 }
2514
2515 s->result = SERVICE_SUCCESS;
2516 s->reload_result = SERVICE_SUCCESS;
2517 s->main_pid_known = false;
2518 s->main_pid_alien = false;
2519 s->forbid_restart = false;
2520
2521 service_enter_start_pre(s);
2522 return 0;
2523}
2524
2525static int service_stop(Unit *u) {
2526 Service *s = SERVICE(u);
2527
2528 assert(s);
2529
2530 /* Don't create restart jobs from here. */
2531 s->forbid_restart = true;
2532
2533 /* Already on it */
2534 if (s->state == SERVICE_STOP ||
2535 s->state == SERVICE_STOP_SIGTERM ||
2536 s->state == SERVICE_STOP_SIGKILL ||
2537 s->state == SERVICE_STOP_POST ||
2538 s->state == SERVICE_FINAL_SIGTERM ||
2539 s->state == SERVICE_FINAL_SIGKILL)
2540 return 0;
2541
2542 /* A restart will be scheduled or is in progress. */
2543 if (s->state == SERVICE_AUTO_RESTART) {
2544 service_set_state(s, SERVICE_DEAD);
2545 return 0;
2546 }
2547
2548 /* If there's already something running we go directly into
2549 * kill mode. */
2550 if (s->state == SERVICE_START_PRE ||
2551 s->state == SERVICE_START ||
2552 s->state == SERVICE_START_POST ||
2553 s->state == SERVICE_RELOAD) {
2554 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
2555 return 0;
2556 }
2557
2558 assert(s->state == SERVICE_RUNNING ||
2559 s->state == SERVICE_EXITED);
2560
2561 service_enter_stop(s, SERVICE_SUCCESS);
2562 return 0;
2563}
2564
2565static int service_reload(Unit *u) {
2566 Service *s = SERVICE(u);
2567
2568 assert(s);
2569
2570 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2571
2572 service_enter_reload(s);
2573 return 0;
2574}
2575
2576static bool service_can_reload(Unit *u) {
2577 Service *s = SERVICE(u);
2578
2579 assert(s);
2580
2581 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2582}
2583
2584static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2585 Service *s = SERVICE(u);
2586
2587 assert(u);
2588 assert(f);
2589 assert(fds);
2590
2591 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2592 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2593 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
2594
2595 if (s->control_pid > 0)
2596 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2597
2598 if (s->main_pid_known && s->main_pid > 0)
2599 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2600
2601 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2602
2603 if (s->status_text)
2604 unit_serialize_item(u, f, "status-text", s->status_text);
2605
2606 /* FIXME: There's a minor uncleanliness here: if there are
2607 * multiple commands attached here, we will start from the
2608 * first one again */
2609 if (s->control_command_id >= 0)
2610 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2611
2612 if (s->socket_fd >= 0) {
2613 int copy;
2614
2615 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2616 return copy;
2617
2618 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2619 }
2620
2621 if (s->main_exec_status.pid > 0) {
2622 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2623 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2624 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2625
2626 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2627 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2628 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2629 }
2630 }
2631 if (dual_timestamp_is_set(&s->watchdog_timestamp))
2632 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
2633
2634 return 0;
2635}
2636
2637static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2638 Service *s = SERVICE(u);
2639
2640 assert(u);
2641 assert(key);
2642 assert(value);
2643 assert(fds);
2644
2645 if (streq(key, "state")) {
2646 ServiceState state;
2647
2648 if ((state = service_state_from_string(value)) < 0)
2649 log_debug("Failed to parse state value %s", value);
2650 else
2651 s->deserialized_state = state;
2652 } else if (streq(key, "result")) {
2653 ServiceResult f;
2654
2655 f = service_result_from_string(value);
2656 if (f < 0)
2657 log_debug("Failed to parse result value %s", value);
2658 else if (f != SERVICE_SUCCESS)
2659 s->result = f;
2660
2661 } else if (streq(key, "reload-result")) {
2662 ServiceResult f;
2663
2664 f = service_result_from_string(value);
2665 if (f < 0)
2666 log_debug("Failed to parse reload result value %s", value);
2667 else if (f != SERVICE_SUCCESS)
2668 s->reload_result = f;
2669
2670 } else if (streq(key, "control-pid")) {
2671 pid_t pid;
2672
2673 if (parse_pid(value, &pid) < 0)
2674 log_debug("Failed to parse control-pid value %s", value);
2675 else
2676 s->control_pid = pid;
2677 } else if (streq(key, "main-pid")) {
2678 pid_t pid;
2679
2680 if (parse_pid(value, &pid) < 0)
2681 log_debug("Failed to parse main-pid value %s", value);
2682 else
2683 service_set_main_pid(s, (pid_t) pid);
2684 } else if (streq(key, "main-pid-known")) {
2685 int b;
2686
2687 if ((b = parse_boolean(value)) < 0)
2688 log_debug("Failed to parse main-pid-known value %s", value);
2689 else
2690 s->main_pid_known = b;
2691 } else if (streq(key, "status-text")) {
2692 char *t;
2693
2694 if ((t = strdup(value))) {
2695 free(s->status_text);
2696 s->status_text = t;
2697 }
2698
2699 } else if (streq(key, "control-command")) {
2700 ServiceExecCommand id;
2701
2702 if ((id = service_exec_command_from_string(value)) < 0)
2703 log_debug("Failed to parse exec-command value %s", value);
2704 else {
2705 s->control_command_id = id;
2706 s->control_command = s->exec_command[id];
2707 }
2708 } else if (streq(key, "socket-fd")) {
2709 int fd;
2710
2711 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2712 log_debug("Failed to parse socket-fd value %s", value);
2713 else {
2714
2715 if (s->socket_fd >= 0)
2716 close_nointr_nofail(s->socket_fd);
2717 s->socket_fd = fdset_remove(fds, fd);
2718 }
2719 } else if (streq(key, "main-exec-status-pid")) {
2720 pid_t pid;
2721
2722 if (parse_pid(value, &pid) < 0)
2723 log_debug("Failed to parse main-exec-status-pid value %s", value);
2724 else
2725 s->main_exec_status.pid = pid;
2726 } else if (streq(key, "main-exec-status-code")) {
2727 int i;
2728
2729 if (safe_atoi(value, &i) < 0)
2730 log_debug("Failed to parse main-exec-status-code value %s", value);
2731 else
2732 s->main_exec_status.code = i;
2733 } else if (streq(key, "main-exec-status-status")) {
2734 int i;
2735
2736 if (safe_atoi(value, &i) < 0)
2737 log_debug("Failed to parse main-exec-status-status value %s", value);
2738 else
2739 s->main_exec_status.status = i;
2740 } else if (streq(key, "main-exec-status-start"))
2741 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2742 else if (streq(key, "main-exec-status-exit"))
2743 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2744 else if (streq(key, "watchdog-timestamp"))
2745 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
2746 else
2747 log_debug("Unknown serialization key '%s'", key);
2748
2749 return 0;
2750}
2751
2752static UnitActiveState service_active_state(Unit *u) {
2753 const UnitActiveState *table;
2754
2755 assert(u);
2756
2757 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2758
2759 return table[SERVICE(u)->state];
2760}
2761
2762static const char *service_sub_state_to_string(Unit *u) {
2763 assert(u);
2764
2765 return service_state_to_string(SERVICE(u)->state);
2766}
2767
2768static bool service_check_gc(Unit *u) {
2769 Service *s = SERVICE(u);
2770
2771 assert(s);
2772
2773 /* Never clean up services that still have a process around,
2774 * even if the service is formally dead. */
2775 if (cgroup_good(s) > 0 ||
2776 main_pid_good(s) > 0 ||
2777 control_pid_good(s) > 0)
2778 return true;
2779
2780#ifdef HAVE_SYSV_COMPAT
2781 if (s->is_sysv)
2782 return true;
2783#endif
2784
2785 return false;
2786}
2787
2788static bool service_check_snapshot(Unit *u) {
2789 Service *s = SERVICE(u);
2790
2791 assert(s);
2792
2793 return !s->got_socket_fd;
2794}
2795
2796static int service_retry_pid_file(Service *s) {
2797 int r;
2798
2799 assert(s->pid_file);
2800 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2801
2802 r = service_load_pid_file(s, false);
2803 if (r < 0)
2804 return r;
2805
2806 service_unwatch_pid_file(s);
2807
2808 service_enter_running(s, SERVICE_SUCCESS);
2809 return 0;
2810}
2811
2812static int service_watch_pid_file(Service *s) {
2813 int r;
2814
2815 log_debug("Setting watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
2816 r = path_spec_watch(s->pid_file_pathspec, UNIT(s));
2817 if (r < 0)
2818 goto fail;
2819
2820 /* the pidfile might have appeared just before we set the watch */
2821 service_retry_pid_file(s);
2822
2823 return 0;
2824fail:
2825 log_error("Failed to set a watch for %s's PID file %s: %s",
2826 UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
2827 service_unwatch_pid_file(s);
2828 return r;
2829}
2830
2831static int service_demand_pid_file(Service *s) {
2832 PathSpec *ps;
2833
2834 assert(s->pid_file);
2835 assert(!s->pid_file_pathspec);
2836
2837 ps = new0(PathSpec, 1);
2838 if (!ps)
2839 return -ENOMEM;
2840
2841 ps->path = strdup(s->pid_file);
2842 if (!ps->path) {
2843 free(ps);
2844 return -ENOMEM;
2845 }
2846
2847 path_kill_slashes(ps->path);
2848
2849 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2850 * keep their PID file open all the time. */
2851 ps->type = PATH_MODIFIED;
2852 ps->inotify_fd = -1;
2853
2854 s->pid_file_pathspec = ps;
2855
2856 return service_watch_pid_file(s);
2857}
2858
2859static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
2860 Service *s = SERVICE(u);
2861
2862 assert(s);
2863 assert(fd >= 0);
2864 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2865 assert(s->pid_file_pathspec);
2866 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
2867
2868 log_debug("inotify event for %s", u->id);
2869
2870 if (path_spec_fd_event(s->pid_file_pathspec, events) < 0)
2871 goto fail;
2872
2873 if (service_retry_pid_file(s) == 0)
2874 return;
2875
2876 if (service_watch_pid_file(s) < 0)
2877 goto fail;
2878
2879 return;
2880fail:
2881 service_unwatch_pid_file(s);
2882 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
2883}
2884
2885static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2886 Service *s = SERVICE(u);
2887 ServiceResult f;
2888
2889 assert(s);
2890 assert(pid >= 0);
2891
2892 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2893 is_clean_exit_lsb(code, status, &s->success_status))
2894 f = SERVICE_SUCCESS;
2895 else if (code == CLD_EXITED)
2896 f = SERVICE_FAILURE_EXIT_CODE;
2897 else if (code == CLD_KILLED)
2898 f = SERVICE_FAILURE_SIGNAL;
2899 else if (code == CLD_DUMPED)
2900 f = SERVICE_FAILURE_CORE_DUMP;
2901 else
2902 assert_not_reached("Unknown code");
2903
2904 if (s->main_pid == pid) {
2905 /* Forking services may occasionally move to a new PID.
2906 * As long as they update the PID file before exiting the old
2907 * PID, they're fine. */
2908 if (service_load_pid_file(s, false) == 0)
2909 return;
2910
2911 s->main_pid = 0;
2912 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2913
2914 /* If this is not a forking service than the main
2915 * process got started and hence we copy the exit
2916 * status so that it is recorded both as main and as
2917 * control process exit status */
2918 if (s->main_command) {
2919 s->main_command->exec_status = s->main_exec_status;
2920
2921 if (s->main_command->ignore)
2922 f = SERVICE_SUCCESS;
2923 }
2924
2925 log_full(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2926 "%s: main process exited, code=%s, status=%i", u->id, sigchld_code_to_string(code), status);
2927
2928 if (f != SERVICE_SUCCESS)
2929 s->result = f;
2930
2931 if (s->main_command &&
2932 s->main_command->command_next &&
2933 f == SERVICE_SUCCESS) {
2934
2935 /* There is another command to *
2936 * execute, so let's do that. */
2937
2938 log_debug("%s running next main command for state %s", u->id, service_state_to_string(s->state));
2939 service_run_next_main(s);
2940
2941 } else {
2942
2943 /* The service exited, so the service is officially
2944 * gone. */
2945 s->main_command = NULL;
2946
2947 switch (s->state) {
2948
2949 case SERVICE_START_POST:
2950 case SERVICE_RELOAD:
2951 case SERVICE_STOP:
2952 /* Need to wait until the operation is
2953 * done */
2954 break;
2955
2956 case SERVICE_START:
2957 if (s->type == SERVICE_ONESHOT) {
2958 /* This was our main goal, so let's go on */
2959 if (f == SERVICE_SUCCESS)
2960 service_enter_start_post(s);
2961 else
2962 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
2963 break;
2964 } else {
2965 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2966
2967 /* Fall through */
2968 }
2969
2970 case SERVICE_RUNNING:
2971 service_enter_running(s, f);
2972 break;
2973
2974 case SERVICE_STOP_SIGTERM:
2975 case SERVICE_STOP_SIGKILL:
2976
2977 if (!control_pid_good(s))
2978 service_enter_stop_post(s, f);
2979
2980 /* If there is still a control process, wait for that first */
2981 break;
2982
2983 default:
2984 assert_not_reached("Uh, main process died at wrong time.");
2985 }
2986 }
2987
2988 } else if (s->control_pid == pid) {
2989
2990 s->control_pid = 0;
2991
2992 if (s->control_command) {
2993 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
2994
2995 if (s->control_command->ignore)
2996 f = SERVICE_SUCCESS;
2997 }
2998
2999 log_full(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
3000 "%s: control process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
3001
3002 if (f != SERVICE_SUCCESS)
3003 s->result = f;
3004
3005 /* Immediately get rid of the cgroup, so that the
3006 * kernel doesn't delay the cgroup empty messages for
3007 * the service cgroup any longer than necessary */
3008 cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, SIGKILL, true, true, NULL, "control");
3009
3010 if (s->control_command &&
3011 s->control_command->command_next &&
3012 f == SERVICE_SUCCESS) {
3013
3014 /* There is another command to *
3015 * execute, so let's do that. */
3016
3017 log_debug("%s running next control command for state %s", u->id, service_state_to_string(s->state));
3018 service_run_next_control(s);
3019
3020 } else {
3021 /* No further commands for this step, so let's
3022 * figure out what to do next */
3023
3024 s->control_command = NULL;
3025 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
3026
3027 log_debug("%s got final SIGCHLD for state %s", u->id, service_state_to_string(s->state));
3028
3029 switch (s->state) {
3030
3031 case SERVICE_START_PRE:
3032 if (f == SERVICE_SUCCESS)
3033 service_enter_start(s);
3034 else
3035 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3036 break;
3037
3038 case SERVICE_START:
3039 assert(s->type == SERVICE_FORKING);
3040
3041 if (f != SERVICE_SUCCESS) {
3042 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3043 break;
3044 }
3045
3046 if (s->pid_file) {
3047 bool has_start_post;
3048 int r;
3049
3050 /* Let's try to load the pid file here if we can.
3051 * The PID file might actually be created by a START_POST
3052 * script. In that case don't worry if the loading fails. */
3053
3054 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
3055 r = service_load_pid_file(s, !has_start_post);
3056 if (!has_start_post && r < 0) {
3057 r = service_demand_pid_file(s);
3058 if (r < 0 || !cgroup_good(s))
3059 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3060 break;
3061 }
3062 } else
3063 service_search_main_pid(s);
3064
3065 service_enter_start_post(s);
3066 break;
3067
3068 case SERVICE_START_POST:
3069 if (f != SERVICE_SUCCESS) {
3070 service_enter_stop(s, f);
3071 break;
3072 }
3073
3074 if (s->pid_file) {
3075 int r;
3076
3077 r = service_load_pid_file(s, true);
3078 if (r < 0) {
3079 r = service_demand_pid_file(s);
3080 if (r < 0 || !cgroup_good(s))
3081 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3082 break;
3083 }
3084 } else
3085 service_search_main_pid(s);
3086
3087 service_enter_running(s, SERVICE_SUCCESS);
3088 break;
3089
3090 case SERVICE_RELOAD:
3091 if (f == SERVICE_SUCCESS) {
3092 service_load_pid_file(s, true);
3093 service_search_main_pid(s);
3094 }
3095
3096 s->reload_result = f;
3097 service_enter_running(s, SERVICE_SUCCESS);
3098 break;
3099
3100 case SERVICE_STOP:
3101 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
3102 break;
3103
3104 case SERVICE_STOP_SIGTERM:
3105 case SERVICE_STOP_SIGKILL:
3106 if (main_pid_good(s) <= 0)
3107 service_enter_stop_post(s, f);
3108
3109 /* If there is still a service
3110 * process around, wait until
3111 * that one quit, too */
3112 break;
3113
3114 case SERVICE_STOP_POST:
3115 case SERVICE_FINAL_SIGTERM:
3116 case SERVICE_FINAL_SIGKILL:
3117 service_enter_dead(s, f, true);
3118 break;
3119
3120 default:
3121 assert_not_reached("Uh, control process died at wrong time.");
3122 }
3123 }
3124 }
3125
3126 /* Notify clients about changed exit status */
3127 unit_add_to_dbus_queue(u);
3128}
3129
3130static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
3131 Service *s = SERVICE(u);
3132
3133 assert(s);
3134 assert(elapsed == 1);
3135
3136 if (w == &s->watchdog_watch) {
3137 service_handle_watchdog(s);
3138 return;
3139 }
3140
3141 assert(w == &s->timer_watch);
3142
3143 switch (s->state) {
3144
3145 case SERVICE_START_PRE:
3146 case SERVICE_START:
3147 log_warning("%s operation timed out. Terminating.", u->id);
3148 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3149 break;
3150
3151 case SERVICE_START_POST:
3152 log_warning("%s operation timed out. Stopping.", u->id);
3153 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
3154 break;
3155
3156 case SERVICE_RELOAD:
3157 log_warning("%s operation timed out. Stopping.", u->id);
3158 s->reload_result = SERVICE_FAILURE_TIMEOUT;
3159 service_enter_running(s, SERVICE_SUCCESS);
3160 break;
3161
3162 case SERVICE_STOP:
3163 log_warning("%s stopping timed out. Terminating.", u->id);
3164 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3165 break;
3166
3167 case SERVICE_STOP_SIGTERM:
3168 if (s->kill_context.send_sigkill) {
3169 log_warning("%s stopping timed out. Killing.", u->id);
3170 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3171 } else {
3172 log_warning("%s stopping timed out. Skipping SIGKILL.", u->id);
3173 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3174 }
3175
3176 break;
3177
3178 case SERVICE_STOP_SIGKILL:
3179 /* Uh, we sent a SIGKILL and it is still not gone?
3180 * Must be something we cannot kill, so let's just be
3181 * weirded out and continue */
3182
3183 log_warning("%s still around after SIGKILL. Ignoring.", u->id);
3184 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
3185 break;
3186
3187 case SERVICE_STOP_POST:
3188 log_warning("%s stopping timed out (2). Terminating.", u->id);
3189 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
3190 break;
3191
3192 case SERVICE_FINAL_SIGTERM:
3193 if (s->kill_context.send_sigkill) {
3194 log_warning("%s stopping timed out (2). Killing.", u->id);
3195 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
3196 } else {
3197 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->id);
3198 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
3199 }
3200
3201 break;
3202
3203 case SERVICE_FINAL_SIGKILL:
3204 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->id);
3205 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
3206 break;
3207
3208 case SERVICE_AUTO_RESTART:
3209 log_info("%s holdoff time over, scheduling restart.", u->id);
3210 service_enter_restart(s);
3211 break;
3212
3213 default:
3214 assert_not_reached("Timeout at wrong time.");
3215 }
3216}
3217
3218static void service_cgroup_notify_event(Unit *u) {
3219 Service *s = SERVICE(u);
3220
3221 assert(u);
3222
3223 log_debug("%s: cgroup is empty", u->id);
3224
3225 switch (s->state) {
3226
3227 /* Waiting for SIGCHLD is usually more interesting,
3228 * because it includes return codes/signals. Which is
3229 * why we ignore the cgroup events for most cases,
3230 * except when we don't know pid which to expect the
3231 * SIGCHLD for. */
3232
3233 case SERVICE_START:
3234 case SERVICE_START_POST:
3235 /* If we were hoping for the daemon to write its PID file,
3236 * we can give up now. */
3237 if (s->pid_file_pathspec) {
3238 log_warning("%s never wrote its PID file. Failing.", UNIT(s)->id);
3239 service_unwatch_pid_file(s);
3240 if (s->state == SERVICE_START)
3241 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3242 else
3243 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
3244 }
3245 break;
3246
3247 case SERVICE_RUNNING:
3248 /* service_enter_running() will figure out what to do */
3249 service_enter_running(s, SERVICE_SUCCESS);
3250 break;
3251
3252 case SERVICE_STOP_SIGTERM:
3253 case SERVICE_STOP_SIGKILL:
3254
3255 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3256 service_enter_stop_post(s, SERVICE_SUCCESS);
3257
3258 break;
3259
3260 case SERVICE_FINAL_SIGTERM:
3261 case SERVICE_FINAL_SIGKILL:
3262 if (main_pid_good(s) <= 0 && !control_pid_good(s))
3263 service_enter_dead(s, SERVICE_SUCCESS, true);
3264
3265 break;
3266
3267 default:
3268 ;
3269 }
3270}
3271
3272static void service_notify_message(Unit *u, pid_t pid, char **tags) {
3273 Service *s = SERVICE(u);
3274 const char *e;
3275
3276 assert(u);
3277
3278 if (s->notify_access == NOTIFY_NONE) {
3279 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
3280 u->id, (unsigned long) pid);
3281 return;
3282 }
3283
3284 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
3285 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
3286 u->id, (unsigned long) pid, (unsigned long) s->main_pid);
3287 return;
3288 }
3289
3290 log_debug("%s: Got message", u->id);
3291
3292 /* Interpret MAINPID= */
3293 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
3294 (s->state == SERVICE_START ||
3295 s->state == SERVICE_START_POST ||
3296 s->state == SERVICE_RUNNING ||
3297 s->state == SERVICE_RELOAD)) {
3298
3299 if (parse_pid(e + 8, &pid) < 0)
3300 log_warning("Failed to parse notification message %s", e);
3301 else {
3302 log_debug("%s: got %s", u->id, e);
3303 service_set_main_pid(s, pid);
3304 }
3305 }
3306
3307 /* Interpret READY= */
3308 if (s->type == SERVICE_NOTIFY &&
3309 s->state == SERVICE_START &&
3310 strv_find(tags, "READY=1")) {
3311 log_debug("%s: got READY=1", u->id);
3312
3313 service_enter_start_post(s);
3314 }
3315
3316 /* Interpret STATUS= */
3317 e = strv_find_prefix(tags, "STATUS=");
3318 if (e) {
3319 char *t;
3320
3321 if (e[7]) {
3322
3323 if (!utf8_is_valid(e+7)) {
3324 log_warning("Status message in notification is not UTF-8 clean.");
3325 return;
3326 }
3327
3328 t = strdup(e+7);
3329 if (!t) {
3330 log_error("Failed to allocate string.");
3331 return;
3332 }
3333
3334 log_debug("%s: got %s", u->id, e);
3335
3336 free(s->status_text);
3337 s->status_text = t;
3338 } else {
3339 free(s->status_text);
3340 s->status_text = NULL;
3341 }
3342
3343 }
3344 if (strv_find(tags, "WATCHDOG=1")) {
3345 log_debug("%s: got WATCHDOG=1", u->id);
3346 service_reset_watchdog(s);
3347 }
3348
3349 /* Notify clients about changed status or main pid */
3350 unit_add_to_dbus_queue(u);
3351}
3352
3353#ifdef HAVE_SYSV_COMPAT
3354
3355#ifdef TARGET_SUSE
3356static void sysv_facility_in_insserv_conf(Manager *mgr) {
3357 FILE *f=NULL;
3358 int r;
3359
3360 if (!(f = fopen("/etc/insserv.conf", "re"))) {
3361 r = errno == ENOENT ? 0 : -errno;
3362 goto finish;
3363 }
3364
3365 while (!feof(f)) {
3366 char l[LINE_MAX], *t;
3367 char **parsed = NULL;
3368
3369 if (!fgets(l, sizeof(l), f)) {
3370 if (feof(f))
3371 break;
3372
3373 r = -errno;
3374 log_error("Failed to read configuration file '/etc/insserv.conf': %s", strerror(-r));
3375 goto finish;
3376 }
3377
3378 t = strstrip(l);
3379 if (*t != '$' && *t != '<')
3380 continue;
3381
3382 parsed = strv_split(t,WHITESPACE);
3383 /* we ignore <interactive>, not used, equivalent to X-Interactive */
3384 if (parsed && !startswith_no_case (parsed[0], "<interactive>")) {
3385 char *facility;
3386 Unit *u;
3387 if (sysv_translate_facility(parsed[0], NULL, &facility) < 0)
3388 continue;
3389 if ((u = manager_get_unit(mgr, facility)) && (u->type == UNIT_TARGET)) {
3390 UnitDependency e;
3391 char *dep = NULL, *name, **j;
3392
3393 STRV_FOREACH (j, parsed+1) {
3394 if (*j[0]=='+') {
3395 e = UNIT_WANTS;
3396 name = *j+1;
3397 }
3398 else {
3399 e = UNIT_REQUIRES;
3400 name = *j;
3401 }
3402 if (sysv_translate_facility(name, NULL, &dep) < 0)
3403 continue;
3404
3405 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, e, dep, NULL, true);
3406 free(dep);
3407 }
3408 }
3409 free(facility);
3410 }
3411 strv_free(parsed);
3412 }
3413finish:
3414 if (f)
3415 fclose(f);
3416
3417}
3418#endif
3419
3420static int service_enumerate(Manager *m) {
3421 char **p;
3422 unsigned i;
3423 DIR *d = NULL;
3424 char *path = NULL, *fpath = NULL, *name = NULL;
3425 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
3426 Unit *service;
3427 Iterator j;
3428 int r;
3429
3430 assert(m);
3431
3432 if (m->running_as != MANAGER_SYSTEM)
3433 return 0;
3434
3435 zero(runlevel_services);
3436
3437 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
3438 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
3439 struct dirent *de;
3440
3441 free(path);
3442 path = strjoin(*p, "/", rcnd_table[i].path, NULL);
3443 if (!path) {
3444 r = -ENOMEM;
3445 goto finish;
3446 }
3447
3448 if (d)
3449 closedir(d);
3450
3451 if (!(d = opendir(path))) {
3452 if (errno != ENOENT)
3453 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3454
3455 continue;
3456 }
3457
3458 while ((de = readdir(d))) {
3459 int a, b;
3460
3461 if (ignore_file(de->d_name))
3462 continue;
3463
3464 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3465 continue;
3466
3467 if (strlen(de->d_name) < 4)
3468 continue;
3469
3470 a = undecchar(de->d_name[1]);
3471 b = undecchar(de->d_name[2]);
3472
3473 if (a < 0 || b < 0)
3474 continue;
3475
3476 free(fpath);
3477 fpath = strjoin(path, "/", de->d_name, NULL);
3478 if (!fpath) {
3479 r = -ENOMEM;
3480 goto finish;
3481 }
3482
3483 if (access(fpath, X_OK) < 0) {
3484
3485 if (errno != ENOENT)
3486 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3487
3488 continue;
3489 }
3490
3491 free(name);
3492 if (!(name = sysv_translate_name(de->d_name + 3))) {
3493 r = -ENOMEM;
3494 goto finish;
3495 }
3496
3497 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3498 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3499 continue;
3500 }
3501
3502 if (de->d_name[0] == 'S') {
3503
3504 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3505 SERVICE(service)->sysv_start_priority_from_rcnd =
3506 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3507
3508 SERVICE(service)->sysv_enabled = true;
3509 }
3510
3511 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3512 goto finish;
3513
3514 if ((r = set_put(runlevel_services[i], service)) < 0)
3515 goto finish;
3516
3517 } else if (de->d_name[0] == 'K' &&
3518 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3519 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3520
3521 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3522 goto finish;
3523
3524 if ((r = set_put(shutdown_services, service)) < 0)
3525 goto finish;
3526 }
3527 }
3528 }
3529
3530 /* Now we loaded all stubs and are aware of the lowest
3531 start-up priority for all services, not let's actually load
3532 the services, this will also tell us which services are
3533 actually native now */
3534 manager_dispatch_load_queue(m);
3535
3536 /* If this is a native service, rely on native ways to pull in
3537 * a service, don't pull it in via sysv rcN.d links. */
3538 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3539 SET_FOREACH(service, runlevel_services[i], j) {
3540 service = unit_follow_merge(service);
3541
3542 if (service->fragment_path)
3543 continue;
3544
3545 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3546 goto finish;
3547 }
3548
3549 /* We honour K links only for halt/reboot. For the normal
3550 * runlevels we assume the stop jobs will be implicitly added
3551 * by the core logic. Also, we don't really distinguish here
3552 * between the runlevels 0 and 6 and just add them to the
3553 * special shutdown target. On SUSE the boot.d/ runlevel is
3554 * also used for shutdown, so we add links for that too to the
3555 * shutdown target.*/
3556 SET_FOREACH(service, shutdown_services, j) {
3557 service = unit_follow_merge(service);
3558
3559 if (service->fragment_path)
3560 continue;
3561
3562 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3563 goto finish;
3564 }
3565
3566 r = 0;
3567
3568#ifdef TARGET_SUSE
3569 sysv_facility_in_insserv_conf (m);
3570#endif
3571
3572finish:
3573 free(path);
3574 free(fpath);
3575 free(name);
3576
3577 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3578 set_free(runlevel_services[i]);
3579 set_free(shutdown_services);
3580
3581 if (d)
3582 closedir(d);
3583
3584 return r;
3585}
3586#endif
3587
3588static void service_bus_name_owner_change(
3589 Unit *u,
3590 const char *name,
3591 const char *old_owner,
3592 const char *new_owner) {
3593
3594 Service *s = SERVICE(u);
3595
3596 assert(s);
3597 assert(name);
3598
3599 assert(streq(s->bus_name, name));
3600 assert(old_owner || new_owner);
3601
3602 if (old_owner && new_owner)
3603 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->id, name, old_owner, new_owner);
3604 else if (old_owner)
3605 log_debug("%s's D-Bus name %s no longer registered by %s", u->id, name, old_owner);
3606 else
3607 log_debug("%s's D-Bus name %s now registered by %s", u->id, name, new_owner);
3608
3609 s->bus_name_good = !!new_owner;
3610
3611 if (s->type == SERVICE_DBUS) {
3612
3613 /* service_enter_running() will figure out what to
3614 * do */
3615 if (s->state == SERVICE_RUNNING)
3616 service_enter_running(s, SERVICE_SUCCESS);
3617 else if (s->state == SERVICE_START && new_owner)
3618 service_enter_start_post(s);
3619
3620 } else if (new_owner &&
3621 s->main_pid <= 0 &&
3622 (s->state == SERVICE_START ||
3623 s->state == SERVICE_START_POST ||
3624 s->state == SERVICE_RUNNING ||
3625 s->state == SERVICE_RELOAD)) {
3626
3627 /* Try to acquire PID from bus service */
3628 log_debug("Trying to acquire PID from D-Bus name...");
3629
3630 bus_query_pid(u->manager, name);
3631 }
3632}
3633
3634static void service_bus_query_pid_done(
3635 Unit *u,
3636 const char *name,
3637 pid_t pid) {
3638
3639 Service *s = SERVICE(u);
3640
3641 assert(s);
3642 assert(name);
3643
3644 log_debug("%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
3645
3646 if (s->main_pid <= 0 &&
3647 (s->state == SERVICE_START ||
3648 s->state == SERVICE_START_POST ||
3649 s->state == SERVICE_RUNNING ||
3650 s->state == SERVICE_RELOAD))
3651 service_set_main_pid(s, pid);
3652}
3653
3654int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3655
3656 assert(s);
3657 assert(fd >= 0);
3658
3659 /* This is called by the socket code when instantiating a new
3660 * service for a stream socket and the socket needs to be
3661 * configured. */
3662
3663 if (UNIT(s)->load_state != UNIT_LOADED)
3664 return -EINVAL;
3665
3666 if (s->socket_fd >= 0)
3667 return -EBUSY;
3668
3669 if (s->state != SERVICE_DEAD)
3670 return -EAGAIN;
3671
3672 s->socket_fd = fd;
3673 s->got_socket_fd = true;
3674
3675 unit_ref_set(&s->accept_socket, UNIT(sock));
3676
3677 return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3678}
3679
3680static void service_reset_failed(Unit *u) {
3681 Service *s = SERVICE(u);
3682
3683 assert(s);
3684
3685 if (s->state == SERVICE_FAILED)
3686 service_set_state(s, SERVICE_DEAD);
3687
3688 s->result = SERVICE_SUCCESS;
3689 s->reload_result = SERVICE_SUCCESS;
3690
3691 RATELIMIT_RESET(s->start_limit);
3692}
3693
3694static int service_kill(Unit *u, KillWho who, int signo, DBusError *error) {
3695 Service *s = SERVICE(u);
3696 int r = 0;
3697 Set *pid_set = NULL;
3698
3699 assert(s);
3700
3701 if (s->main_pid <= 0 && who == KILL_MAIN) {
3702 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3703 return -ESRCH;
3704 }
3705
3706 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3707 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3708 return -ESRCH;
3709 }
3710
3711 if (who == KILL_CONTROL || who == KILL_ALL)
3712 if (s->control_pid > 0)
3713 if (kill(s->control_pid, signo) < 0)
3714 r = -errno;
3715
3716 if (who == KILL_MAIN || who == KILL_ALL)
3717 if (s->main_pid > 0)
3718 if (kill(s->main_pid, signo) < 0)
3719 r = -errno;
3720
3721 if (who == KILL_ALL) {
3722 int q;
3723
3724 pid_set = set_new(trivial_hash_func, trivial_compare_func);
3725 if (!pid_set)
3726 return -ENOMEM;
3727
3728 /* Exclude the control/main pid from being killed via the cgroup */
3729 if (s->control_pid > 0) {
3730 q = set_put(pid_set, LONG_TO_PTR(s->control_pid));
3731 if (q < 0) {
3732 r = q;
3733 goto finish;
3734 }
3735 }
3736
3737 if (s->main_pid > 0) {
3738 q = set_put(pid_set, LONG_TO_PTR(s->main_pid));
3739 if (q < 0) {
3740 r = q;
3741 goto finish;
3742 }
3743 }
3744
3745 q = cgroup_bonding_kill_list(UNIT(s)->cgroup_bondings, signo, false, false, pid_set, NULL);
3746 if (q < 0 && q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3747 r = q;
3748 }
3749
3750finish:
3751 if (pid_set)
3752 set_free(pid_set);
3753
3754 return r;
3755}
3756
3757static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3758 [SERVICE_DEAD] = "dead",
3759 [SERVICE_START_PRE] = "start-pre",
3760 [SERVICE_START] = "start",
3761 [SERVICE_START_POST] = "start-post",
3762 [SERVICE_RUNNING] = "running",
3763 [SERVICE_EXITED] = "exited",
3764 [SERVICE_RELOAD] = "reload",
3765 [SERVICE_STOP] = "stop",
3766 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3767 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3768 [SERVICE_STOP_POST] = "stop-post",
3769 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3770 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3771 [SERVICE_FAILED] = "failed",
3772 [SERVICE_AUTO_RESTART] = "auto-restart",
3773};
3774
3775DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3776
3777static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3778 [SERVICE_RESTART_NO] = "no",
3779 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3780 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3781 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3782 [SERVICE_RESTART_ALWAYS] = "always"
3783};
3784
3785DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3786
3787static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3788 [SERVICE_SIMPLE] = "simple",
3789 [SERVICE_FORKING] = "forking",
3790 [SERVICE_ONESHOT] = "oneshot",
3791 [SERVICE_DBUS] = "dbus",
3792 [SERVICE_NOTIFY] = "notify",
3793 [SERVICE_IDLE] = "idle"
3794};
3795
3796DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3797
3798static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3799 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3800 [SERVICE_EXEC_START] = "ExecStart",
3801 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3802 [SERVICE_EXEC_RELOAD] = "ExecReload",
3803 [SERVICE_EXEC_STOP] = "ExecStop",
3804 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3805};
3806
3807DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3808
3809static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3810 [NOTIFY_NONE] = "none",
3811 [NOTIFY_MAIN] = "main",
3812 [NOTIFY_ALL] = "all"
3813};
3814
3815DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3816
3817static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3818 [SERVICE_SUCCESS] = "success",
3819 [SERVICE_FAILURE_RESOURCES] = "resources",
3820 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3821 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3822 [SERVICE_FAILURE_SIGNAL] = "signal",
3823 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
3824 [SERVICE_FAILURE_WATCHDOG] = "watchdog"
3825};
3826
3827DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3828
3829static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
3830 [SERVICE_START_LIMIT_NONE] = "none",
3831 [SERVICE_START_LIMIT_REBOOT] = "reboot",
3832 [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
3833 [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
3834};
3835DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
3836
3837const UnitVTable service_vtable = {
3838 .object_size = sizeof(Service),
3839 .sections =
3840 "Unit\0"
3841 "Service\0"
3842 "Install\0",
3843
3844 .init = service_init,
3845 .done = service_done,
3846 .load = service_load,
3847
3848 .coldplug = service_coldplug,
3849
3850 .dump = service_dump,
3851
3852 .start = service_start,
3853 .stop = service_stop,
3854 .reload = service_reload,
3855
3856 .can_reload = service_can_reload,
3857
3858 .kill = service_kill,
3859
3860 .serialize = service_serialize,
3861 .deserialize_item = service_deserialize_item,
3862
3863 .active_state = service_active_state,
3864 .sub_state_to_string = service_sub_state_to_string,
3865
3866 .check_gc = service_check_gc,
3867 .check_snapshot = service_check_snapshot,
3868
3869 .sigchld_event = service_sigchld_event,
3870 .timer_event = service_timer_event,
3871 .fd_event = service_fd_event,
3872
3873 .reset_failed = service_reset_failed,
3874
3875 .cgroup_notify_empty = service_cgroup_notify_event,
3876 .notify_message = service_notify_message,
3877
3878 .bus_name_owner_change = service_bus_name_owner_change,
3879 .bus_query_pid_done = service_bus_query_pid_done,
3880
3881 .bus_interface = "org.freedesktop.systemd1.Service",
3882 .bus_message_handler = bus_service_message_handler,
3883 .bus_invalidating_properties = bus_service_invalidating_properties,
3884
3885#ifdef HAVE_SYSV_COMPAT
3886 .enumerate = service_enumerate,
3887#endif
3888 .status_message_formats = {
3889 .starting_stopping = {
3890 [0] = "Starting %s...",
3891 [1] = "Stopping %s...",
3892 },
3893 .finished_start_job = {
3894 [JOB_DONE] = "Started %s.",
3895 [JOB_FAILED] = "Failed to start %s.",
3896 [JOB_DEPENDENCY] = "Dependency failed for %s.",
3897 [JOB_TIMEOUT] = "Timed out starting %s.",
3898 },
3899 .finished_stop_job = {
3900 [JOB_DONE] = "Stopped %s.",
3901 [JOB_FAILED] = "Stopped (with error) %s.",
3902 [JOB_TIMEOUT] = "Timed out stopping %s.",
3903 },
3904 },
3905};
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