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1/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3/***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20***/
21
22#include <errno.h>
23#include <signal.h>
24#include <dirent.h>
25#include <unistd.h>
26
27#include "unit.h"
28#include "service.h"
29#include "load-fragment.h"
30#include "load-dropin.h"
31#include "log.h"
32#include "strv.h"
33#include "unit-name.h"
34#include "dbus-service.h"
35#include "special.h"
36#include "bus-errors.h"
37#include "exit-status.h"
38
39#define COMMENTS "#;\n"
40#define NEWLINES "\n\r"
41
42#ifdef HAVE_SYSV_COMPAT
43
44#define DEFAULT_SYSV_TIMEOUT_USEC (3*USEC_PER_MINUTE)
45
46typedef enum RunlevelType {
47 RUNLEVEL_UP,
48 RUNLEVEL_DOWN,
49 RUNLEVEL_SYSINIT
50} RunlevelType;
51
52static const struct {
53 const char *path;
54 const char *target;
55 const RunlevelType type;
56} rcnd_table[] = {
57 /* Standard SysV runlevels for start-up */
58 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
59 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
60 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
61 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
62 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
63
64#ifdef TARGET_SUSE
65 /* SUSE style boot.d */
66 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
67#endif
68
69#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_FRUGALWARE)
70 /* Debian style rcS.d */
71 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
72#endif
73
74 /* Standard SysV runlevels for shutdown */
75 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
76 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
77
78 /* Note that the order here matters, as we read the
79 directories in this order, and we want to make sure that
80 sysv_start_priority is known when we first load the
81 unit. And that value we only know from S links. Hence
82 UP/SYSINIT must be read before DOWN */
83};
84
85#define RUNLEVELS_UP "12345"
86/* #define RUNLEVELS_DOWN "06" */
87/* #define RUNLEVELS_BOOT "bBsS" */
88#endif
89
90static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
91 [SERVICE_DEAD] = UNIT_INACTIVE,
92 [SERVICE_START_PRE] = UNIT_ACTIVATING,
93 [SERVICE_START] = UNIT_ACTIVATING,
94 [SERVICE_START_POST] = UNIT_ACTIVATING,
95 [SERVICE_RUNNING] = UNIT_ACTIVE,
96 [SERVICE_EXITED] = UNIT_ACTIVE,
97 [SERVICE_RELOAD] = UNIT_RELOADING,
98 [SERVICE_STOP] = UNIT_DEACTIVATING,
99 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
100 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
101 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
102 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
103 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
104 [SERVICE_FAILED] = UNIT_FAILED,
105 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
106};
107
108static void service_init(Unit *u) {
109 Service *s = SERVICE(u);
110
111 assert(u);
112 assert(u->meta.load_state == UNIT_STUB);
113
114 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
115 s->restart_usec = DEFAULT_RESTART_USEC;
116 s->timer_watch.type = WATCH_INVALID;
117#ifdef HAVE_SYSV_COMPAT
118 s->sysv_start_priority = -1;
119#endif
120 s->socket_fd = -1;
121 s->guess_main_pid = true;
122
123 exec_context_init(&s->exec_context);
124 s->exec_context.std_output = u->meta.manager->default_std_output;
125 s->exec_context.std_error = u->meta.manager->default_std_error;
126
127 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
128
129 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
130}
131
132static void service_unwatch_control_pid(Service *s) {
133 assert(s);
134
135 if (s->control_pid <= 0)
136 return;
137
138 unit_unwatch_pid(UNIT(s), s->control_pid);
139 s->control_pid = 0;
140}
141
142static void service_unwatch_main_pid(Service *s) {
143 assert(s);
144
145 if (s->main_pid <= 0)
146 return;
147
148 unit_unwatch_pid(UNIT(s), s->main_pid);
149 s->main_pid = 0;
150}
151
152static int service_set_main_pid(Service *s, pid_t pid) {
153 pid_t ppid;
154
155 assert(s);
156
157 if (pid <= 1)
158 return -EINVAL;
159
160 if (pid == getpid())
161 return -EINVAL;
162
163 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid())
164 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
165 s->meta.id, (unsigned long) pid);
166
167 s->main_pid = pid;
168 s->main_pid_known = true;
169
170 exec_status_start(&s->main_exec_status, pid);
171
172 return 0;
173}
174
175static void service_close_socket_fd(Service *s) {
176 assert(s);
177
178 if (s->socket_fd < 0)
179 return;
180
181 close_nointr_nofail(s->socket_fd);
182 s->socket_fd = -1;
183}
184
185static void service_connection_unref(Service *s) {
186 assert(s);
187
188 if (!s->accept_socket)
189 return;
190
191 socket_connection_unref(s->accept_socket);
192 s->accept_socket = NULL;
193}
194
195static void service_done(Unit *u) {
196 Service *s = SERVICE(u);
197
198 assert(s);
199
200 free(s->pid_file);
201 s->pid_file = NULL;
202
203#ifdef HAVE_SYSV_COMPAT
204 free(s->sysv_path);
205 s->sysv_path = NULL;
206
207 free(s->sysv_runlevels);
208 s->sysv_runlevels = NULL;
209#endif
210
211 free(s->status_text);
212 s->status_text = NULL;
213
214 exec_context_done(&s->exec_context);
215 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
216 s->control_command = NULL;
217 s->main_command = NULL;
218
219 /* This will leak a process, but at least no memory or any of
220 * our resources */
221 service_unwatch_main_pid(s);
222 service_unwatch_control_pid(s);
223
224 if (s->bus_name) {
225 unit_unwatch_bus_name(UNIT(u), s->bus_name);
226 free(s->bus_name);
227 s->bus_name = NULL;
228 }
229
230 service_close_socket_fd(s);
231 service_connection_unref(s);
232
233 set_free(s->configured_sockets);
234
235 unit_unwatch_timer(u, &s->timer_watch);
236}
237
238#ifdef HAVE_SYSV_COMPAT
239static char *sysv_translate_name(const char *name) {
240 char *r;
241
242 if (!(r = new(char, strlen(name) + sizeof(".service"))))
243 return NULL;
244
245#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
246 if (endswith(name, ".sh"))
247 /* Drop Debian-style .sh suffix */
248 strcpy(stpcpy(r, name) - 3, ".service");
249#endif
250#ifdef TARGET_SUSE
251 if (startswith(name, "boot."))
252 /* Drop SuSE-style boot. prefix */
253 strcpy(stpcpy(r, name + 5), ".service");
254#endif
255#ifdef TARGET_FRUGALWARE
256 if (startswith(name, "rc."))
257 /* Drop Frugalware-style rc. prefix */
258 strcpy(stpcpy(r, name + 3), ".service");
259#endif
260 else
261 /* Normal init scripts */
262 strcpy(stpcpy(r, name), ".service");
263
264 return r;
265}
266
267static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
268
269 /* We silently ignore the $ prefix here. According to the LSB
270 * spec it simply indicates whether something is a
271 * standardized name or a distribution-specific one. Since we
272 * just follow what already exists and do not introduce new
273 * uses or names we don't care who introduced a new name. */
274
275 static const char * const table[] = {
276 /* LSB defined facilities */
277 "local_fs", SPECIAL_LOCAL_FS_TARGET,
278#ifndef TARGET_MANDRIVA
279 /* Due to unfortunate name selection in Mandriva,
280 * $network is provided by network-up which is ordered
281 * after network which actually starts interfaces.
282 * To break the loop, just ignore it */
283 "network", SPECIAL_NETWORK_TARGET,
284#endif
285 "named", SPECIAL_NSS_LOOKUP_TARGET,
286 "portmap", SPECIAL_RPCBIND_TARGET,
287 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
288 "syslog", SPECIAL_SYSLOG_TARGET,
289 "time", SPECIAL_RTC_SET_TARGET,
290
291 /* common extensions */
292 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
293 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
294 "null", NULL,
295
296#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
297 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
298#endif
299
300#ifdef TARGET_FEDORA
301 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
302 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
303 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
304#endif
305
306#ifdef TARGET_SUSE
307 "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
308#endif
309 };
310
311 unsigned i;
312 char *r;
313 const char *n;
314
315 assert(name);
316 assert(_r);
317
318 n = *name == '$' ? name + 1 : name;
319
320 for (i = 0; i < ELEMENTSOF(table); i += 2) {
321
322 if (!streq(table[i], n))
323 continue;
324
325 if (!table[i+1])
326 return 0;
327
328 if (!(r = strdup(table[i+1])))
329 return -ENOMEM;
330
331 goto finish;
332 }
333
334 /* If we don't know this name, fallback heuristics to figure
335 * out whether something is a target or a service alias. */
336
337 if (*name == '$') {
338 if (!unit_prefix_is_valid(n))
339 return -EINVAL;
340
341 /* Facilities starting with $ are most likely targets */
342 r = unit_name_build(n, NULL, ".target");
343 } else if (filename && streq(name, filename))
344 /* Names equaling the file name of the services are redundant */
345 return 0;
346 else
347 /* Everything else we assume to be normal service names */
348 r = sysv_translate_name(n);
349
350 if (!r)
351 return -ENOMEM;
352
353finish:
354 *_r = r;
355
356 return 1;
357}
358
359static int sysv_fix_order(Service *s) {
360 Meta *other;
361 int r;
362
363 assert(s);
364
365 if (s->sysv_start_priority < 0)
366 return 0;
367
368 /* For each pair of services where at least one lacks a LSB
369 * header, we use the start priority value to order things. */
370
371 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
372 Service *t;
373 UnitDependency d;
374 bool special_s, special_t;
375
376 t = (Service*) other;
377
378 if (s == t)
379 continue;
380
381 if (t->meta.load_state != UNIT_LOADED)
382 continue;
383
384 if (t->sysv_start_priority < 0)
385 continue;
386
387 /* If both units have modern headers we don't care
388 * about the priorities */
389 if ((s->meta.fragment_path || s->sysv_has_lsb) &&
390 (t->meta.fragment_path || t->sysv_has_lsb))
391 continue;
392
393 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
394 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
395
396 if (special_t && !special_s)
397 d = UNIT_AFTER;
398 else if (special_s && !special_t)
399 d = UNIT_BEFORE;
400 else if (t->sysv_start_priority < s->sysv_start_priority)
401 d = UNIT_AFTER;
402 else if (t->sysv_start_priority > s->sysv_start_priority)
403 d = UNIT_BEFORE;
404 else
405 continue;
406
407 /* FIXME: Maybe we should compare the name here lexicographically? */
408
409 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
410 return r;
411 }
412
413 return 0;
414}
415
416static ExecCommand *exec_command_new(const char *path, const char *arg1) {
417 ExecCommand *c;
418
419 if (!(c = new0(ExecCommand, 1)))
420 return NULL;
421
422 if (!(c->path = strdup(path))) {
423 free(c);
424 return NULL;
425 }
426
427 if (!(c->argv = strv_new(path, arg1, NULL))) {
428 free(c->path);
429 free(c);
430 return NULL;
431 }
432
433 return c;
434}
435
436static int sysv_exec_commands(Service *s) {
437 ExecCommand *c;
438
439 assert(s);
440 assert(s->sysv_path);
441
442 if (!(c = exec_command_new(s->sysv_path, "start")))
443 return -ENOMEM;
444 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
445
446 if (!(c = exec_command_new(s->sysv_path, "stop")))
447 return -ENOMEM;
448 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
449
450 if (!(c = exec_command_new(s->sysv_path, "reload")))
451 return -ENOMEM;
452 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
453
454 return 0;
455}
456
457static int service_load_sysv_path(Service *s, const char *path) {
458 FILE *f;
459 Unit *u;
460 unsigned line = 0;
461 int r;
462 enum {
463 NORMAL,
464 DESCRIPTION,
465 LSB,
466 LSB_DESCRIPTION
467 } state = NORMAL;
468 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
469
470 assert(s);
471 assert(path);
472
473 u = UNIT(s);
474
475 if (!(f = fopen(path, "re"))) {
476 r = errno == ENOENT ? 0 : -errno;
477 goto finish;
478 }
479
480 free(s->sysv_path);
481 if (!(s->sysv_path = strdup(path))) {
482 r = -ENOMEM;
483 goto finish;
484 }
485
486 while (!feof(f)) {
487 char l[LINE_MAX], *t;
488
489 if (!fgets(l, sizeof(l), f)) {
490 if (feof(f))
491 break;
492
493 r = -errno;
494 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
495 goto finish;
496 }
497
498 line++;
499
500 t = strstrip(l);
501 if (*t != '#')
502 continue;
503
504 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
505 state = LSB;
506 s->sysv_has_lsb = true;
507 continue;
508 }
509
510 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
511 state = NORMAL;
512 continue;
513 }
514
515 t++;
516 t += strspn(t, WHITESPACE);
517
518 if (state == NORMAL) {
519
520 /* Try to parse Red Hat style chkconfig headers */
521
522 if (startswith_no_case(t, "chkconfig:")) {
523 int start_priority;
524 char runlevels[16], *k;
525
526 state = NORMAL;
527
528 if (sscanf(t+10, "%15s %i %*i",
529 runlevels,
530 &start_priority) != 2) {
531
532 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
533 continue;
534 }
535
536 /* A start priority gathered from the
537 * symlink farms is preferred over the
538 * data from the LSB header. */
539 if (start_priority < 0 || start_priority > 99)
540 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
541 else if (s->sysv_start_priority < 0)
542 s->sysv_start_priority = start_priority;
543
544 char_array_0(runlevels);
545 k = delete_chars(runlevels, WHITESPACE "-");
546
547 if (k[0]) {
548 char *d;
549
550 if (!(d = strdup(k))) {
551 r = -ENOMEM;
552 goto finish;
553 }
554
555 free(s->sysv_runlevels);
556 s->sysv_runlevels = d;
557 }
558
559 } else if (startswith_no_case(t, "description:")) {
560
561 size_t k = strlen(t);
562 char *d;
563 const char *j;
564
565 if (t[k-1] == '\\') {
566 state = DESCRIPTION;
567 t[k-1] = 0;
568 }
569
570 if ((j = strstrip(t+12)) && *j) {
571 if (!(d = strdup(j))) {
572 r = -ENOMEM;
573 goto finish;
574 }
575 } else
576 d = NULL;
577
578 free(chkconfig_description);
579 chkconfig_description = d;
580
581 } else if (startswith_no_case(t, "pidfile:")) {
582
583 char *fn;
584
585 state = NORMAL;
586
587 fn = strstrip(t+8);
588 if (!path_is_absolute(fn)) {
589 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
590 continue;
591 }
592
593 if (!(fn = strdup(fn))) {
594 r = -ENOMEM;
595 goto finish;
596 }
597
598 free(s->pid_file);
599 s->pid_file = fn;
600 }
601
602 } else if (state == DESCRIPTION) {
603
604 /* Try to parse Red Hat style description
605 * continuation */
606
607 size_t k = strlen(t);
608 char *j;
609
610 if (t[k-1] == '\\')
611 t[k-1] = 0;
612 else
613 state = NORMAL;
614
615 if ((j = strstrip(t)) && *j) {
616 char *d = NULL;
617
618 if (chkconfig_description)
619 asprintf(&d, "%s %s", chkconfig_description, j);
620 else
621 d = strdup(j);
622
623 if (!d) {
624 r = -ENOMEM;
625 goto finish;
626 }
627
628 free(chkconfig_description);
629 chkconfig_description = d;
630 }
631
632 } else if (state == LSB || state == LSB_DESCRIPTION) {
633
634 if (startswith_no_case(t, "Provides:")) {
635 char *i, *w;
636 size_t z;
637
638 state = LSB;
639
640 FOREACH_WORD_QUOTED(w, z, t+9, i) {
641 char *n, *m;
642
643 if (!(n = strndup(w, z))) {
644 r = -ENOMEM;
645 goto finish;
646 }
647
648 r = sysv_translate_facility(n, file_name_from_path(path), &m);
649 free(n);
650
651 if (r < 0)
652 goto finish;
653
654 if (r == 0)
655 continue;
656
657 if (unit_name_to_type(m) == UNIT_SERVICE)
658 r = unit_add_name(u, m);
659 else {
660 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
661
662 if (s->sysv_enabled) {
663 int k;
664
665 if ((k = unit_add_dependency_by_name_inverse(u, UNIT_WANTS, m, NULL, true)) < 0)
666 r = k;
667 }
668 }
669
670 if (r < 0)
671 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
672
673 free(m);
674 }
675
676 } else if (startswith_no_case(t, "Required-Start:") ||
677 startswith_no_case(t, "Should-Start:") ||
678 startswith_no_case(t, "X-Start-Before:") ||
679 startswith_no_case(t, "X-Start-After:")) {
680 char *i, *w;
681 size_t z;
682
683 state = LSB;
684
685 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
686 char *n, *m;
687
688 if (!(n = strndup(w, z))) {
689 r = -ENOMEM;
690 goto finish;
691 }
692
693 r = sysv_translate_facility(n, file_name_from_path(path), &m);
694
695 if (r < 0) {
696 log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r));
697 free(n);
698 continue;
699 }
700
701 free(n);
702
703 if (r == 0)
704 continue;
705
706 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
707
708 if (r < 0)
709 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
710
711 free(m);
712 }
713 } else if (startswith_no_case(t, "Default-Start:")) {
714 char *k, *d;
715
716 state = LSB;
717
718 k = delete_chars(t+14, WHITESPACE "-");
719
720 if (k[0] != 0) {
721 if (!(d = strdup(k))) {
722 r = -ENOMEM;
723 goto finish;
724 }
725
726 free(s->sysv_runlevels);
727 s->sysv_runlevels = d;
728 }
729
730 } else if (startswith_no_case(t, "Description:")) {
731 char *d, *j;
732
733 state = LSB_DESCRIPTION;
734
735 if ((j = strstrip(t+12)) && *j) {
736 if (!(d = strdup(j))) {
737 r = -ENOMEM;
738 goto finish;
739 }
740 } else
741 d = NULL;
742
743 free(long_description);
744 long_description = d;
745
746 } else if (startswith_no_case(t, "Short-Description:")) {
747 char *d, *j;
748
749 state = LSB;
750
751 if ((j = strstrip(t+18)) && *j) {
752 if (!(d = strdup(j))) {
753 r = -ENOMEM;
754 goto finish;
755 }
756 } else
757 d = NULL;
758
759 free(short_description);
760 short_description = d;
761
762 } else if (startswith_no_case(t, "X-Interactive:")) {
763 int b;
764
765 if ((b = parse_boolean(strstrip(t+14))) < 0) {
766 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
767 continue;
768 }
769
770 if (b)
771 s->exec_context.std_input = EXEC_INPUT_TTY;
772 else
773 s->exec_context.std_input = EXEC_INPUT_NULL;
774
775 } else if (state == LSB_DESCRIPTION) {
776
777 if (startswith(l, "#\t") || startswith(l, "# ")) {
778 char *j;
779
780 if ((j = strstrip(t)) && *j) {
781 char *d = NULL;
782
783 if (long_description)
784 asprintf(&d, "%s %s", long_description, t);
785 else
786 d = strdup(j);
787
788 if (!d) {
789 r = -ENOMEM;
790 goto finish;
791 }
792
793 free(long_description);
794 long_description = d;
795 }
796
797 } else
798 state = LSB;
799 }
800 }
801 }
802
803 if ((r = sysv_exec_commands(s)) < 0)
804 goto finish;
805
806 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
807 /* If there a runlevels configured for this service
808 * but none of the standard ones, then we assume this
809 * is some special kind of service (which might be
810 * needed for early boot) and don't create any links
811 * to it. */
812
813 s->meta.default_dependencies = false;
814
815 /* Don't timeout special services during boot (like fsck) */
816 s->timeout_usec = 0;
817 } else
818 s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC;
819
820 /* Special setting for all SysV services */
821 s->type = SERVICE_FORKING;
822 s->remain_after_exit = true;
823 s->restart = SERVICE_RESTART_NO;
824 s->exec_context.std_output =
825 (s->meta.manager->sysv_console || s->exec_context.std_input == EXEC_INPUT_TTY)
826 ? EXEC_OUTPUT_TTY : s->meta.manager->default_std_output;
827 s->exec_context.kill_mode = KILL_PROCESS_GROUP;
828
829 /* We use the long description only if
830 * no short description is set. */
831
832 if (short_description)
833 description = short_description;
834 else if (chkconfig_description)
835 description = chkconfig_description;
836 else if (long_description)
837 description = long_description;
838 else
839 description = NULL;
840
841 if (description) {
842 char *d;
843
844 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
845 r = -ENOMEM;
846 goto finish;
847 }
848
849 u->meta.description = d;
850 }
851
852 u->meta.load_state = UNIT_LOADED;
853 r = 0;
854
855finish:
856
857 if (f)
858 fclose(f);
859
860 free(short_description);
861 free(long_description);
862 free(chkconfig_description);
863
864 return r;
865}
866
867static int service_load_sysv_name(Service *s, const char *name) {
868 char **p;
869
870 assert(s);
871 assert(name);
872
873 /* For SysV services we strip the boot.*, rc.* and *.sh
874 * prefixes/suffixes. */
875#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
876 if (endswith(name, ".sh.service"))
877 return -ENOENT;
878#endif
879
880#ifdef TARGET_SUSE
881 if (startswith(name, "boot."))
882 return -ENOENT;
883#endif
884
885#ifdef TARGET_FRUGALWARE
886 if (startswith(name, "rc."))
887 return -ENOENT;
888#endif
889
890 STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
891 char *path;
892 int r;
893
894 if (asprintf(&path, "%s/%s", *p, name) < 0)
895 return -ENOMEM;
896
897 assert(endswith(path, ".service"));
898 path[strlen(path)-8] = 0;
899
900 r = service_load_sysv_path(s, path);
901
902#if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU)
903 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
904 /* Try Debian style *.sh source'able init scripts */
905 strcat(path, ".sh");
906 r = service_load_sysv_path(s, path);
907 }
908#endif
909 free(path);
910
911#ifdef TARGET_SUSE
912 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
913 /* Try SUSE style boot.* init scripts */
914
915 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
916 return -ENOMEM;
917
918 /* Drop .service suffix */
919 path[strlen(path)-8] = 0;
920 r = service_load_sysv_path(s, path);
921 free(path);
922 }
923#endif
924
925#ifdef TARGET_FRUGALWARE
926 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
927 /* Try Frugalware style rc.* init scripts */
928
929 if (asprintf(&path, "%s/rc.%s", *p, name) < 0)
930 return -ENOMEM;
931
932 /* Drop .service suffix */
933 path[strlen(path)-8] = 0;
934 r = service_load_sysv_path(s, path);
935 free(path);
936 }
937#endif
938
939 if (r < 0)
940 return r;
941
942 if ((s->meta.load_state != UNIT_STUB))
943 break;
944 }
945
946 return 0;
947}
948
949static int service_load_sysv(Service *s) {
950 const char *t;
951 Iterator i;
952 int r;
953
954 assert(s);
955
956 /* Load service data from SysV init scripts, preferably with
957 * LSB headers ... */
958
959 if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
960 return 0;
961
962 if ((t = s->meta.id))
963 if ((r = service_load_sysv_name(s, t)) < 0)
964 return r;
965
966 if (s->meta.load_state == UNIT_STUB)
967 SET_FOREACH(t, s->meta.names, i) {
968 if (t == s->meta.id)
969 continue;
970
971 if ((r = service_load_sysv_name(s, t)) < 0)
972 return r;
973
974 if (s->meta.load_state != UNIT_STUB)
975 break;
976 }
977
978 return 0;
979}
980#endif
981
982static int fsck_fix_order(Service *s) {
983 Meta *other;
984 int r;
985
986 assert(s);
987
988 if (s->fsck_passno <= 0)
989 return 0;
990
991 /* For each pair of services where both have an fsck priority
992 * we order things based on it. */
993
994 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
995 Service *t;
996 UnitDependency d;
997
998 t = (Service*) other;
999
1000 if (s == t)
1001 continue;
1002
1003 if (t->meta.load_state != UNIT_LOADED)
1004 continue;
1005
1006 if (t->fsck_passno <= 0)
1007 continue;
1008
1009 if (t->fsck_passno < s->fsck_passno)
1010 d = UNIT_AFTER;
1011 else if (t->fsck_passno > s->fsck_passno)
1012 d = UNIT_BEFORE;
1013 else
1014 continue;
1015
1016 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
1017 return r;
1018 }
1019
1020 return 0;
1021}
1022
1023static int service_verify(Service *s) {
1024 assert(s);
1025
1026 if (s->meta.load_state != UNIT_LOADED)
1027 return 0;
1028
1029 if (!s->exec_command[SERVICE_EXEC_START]) {
1030 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
1031 return -EINVAL;
1032 }
1033
1034 if (s->type != SERVICE_ONESHOT &&
1035 s->exec_command[SERVICE_EXEC_START]->command_next) {
1036 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id);
1037 return -EINVAL;
1038 }
1039
1040 if (s->type == SERVICE_ONESHOT &&
1041 s->exec_command[SERVICE_EXEC_RELOAD]) {
1042 log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", s->meta.id);
1043 return -EINVAL;
1044 }
1045
1046 if (s->type == SERVICE_DBUS && !s->bus_name) {
1047 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
1048 return -EINVAL;
1049 }
1050
1051 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
1052 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
1053 return -EINVAL;
1054 }
1055
1056 return 0;
1057}
1058
1059static int service_add_default_dependencies(Service *s) {
1060 int r;
1061
1062 assert(s);
1063
1064 /* Add a number of automatic dependencies useful for the
1065 * majority of services. */
1066
1067 /* First, pull in base system */
1068 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
1069
1070 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1071 return r;
1072
1073 } else if (s->meta.manager->running_as == MANAGER_USER) {
1074
1075 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1076 return r;
1077 }
1078
1079 /* Second, activate normal shutdown */
1080 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1081}
1082
1083static int service_load(Unit *u) {
1084 int r;
1085 Service *s = SERVICE(u);
1086
1087 assert(s);
1088
1089 /* Load a .service file */
1090 if ((r = unit_load_fragment(u)) < 0)
1091 return r;
1092
1093#ifdef HAVE_SYSV_COMPAT
1094 /* Load a classic init script as a fallback, if we couldn't find anything */
1095 if (u->meta.load_state == UNIT_STUB)
1096 if ((r = service_load_sysv(s)) < 0)
1097 return r;
1098#endif
1099
1100 /* Still nothing found? Then let's give up */
1101 if (u->meta.load_state == UNIT_STUB)
1102 return -ENOENT;
1103
1104 /* We were able to load something, then let's add in the
1105 * dropin directories. */
1106 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1107 return r;
1108
1109 /* This is a new unit? Then let's add in some extras */
1110 if (u->meta.load_state == UNIT_LOADED) {
1111 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1112 return r;
1113
1114 if ((r = unit_add_default_cgroups(u)) < 0)
1115 return r;
1116
1117#ifdef HAVE_SYSV_COMPAT
1118 if ((r = sysv_fix_order(s)) < 0)
1119 return r;
1120#endif
1121
1122 if ((r = fsck_fix_order(s)) < 0)
1123 return r;
1124
1125 if (s->bus_name)
1126 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1127 return r;
1128
1129 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1130 s->notify_access = NOTIFY_MAIN;
1131
1132 if (s->type == SERVICE_DBUS || s->bus_name)
1133 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_TARGET, NULL, true)) < 0)
1134 return r;
1135
1136 if (s->meta.default_dependencies)
1137 if ((r = service_add_default_dependencies(s)) < 0)
1138 return r;
1139 }
1140
1141 return service_verify(s);
1142}
1143
1144static void service_dump(Unit *u, FILE *f, const char *prefix) {
1145
1146 ServiceExecCommand c;
1147 Service *s = SERVICE(u);
1148 const char *prefix2;
1149 char *p2;
1150
1151 assert(s);
1152
1153 p2 = strappend(prefix, "\t");
1154 prefix2 = p2 ? p2 : prefix;
1155
1156 fprintf(f,
1157 "%sService State: %s\n"
1158 "%sPermissionsStartOnly: %s\n"
1159 "%sRootDirectoryStartOnly: %s\n"
1160 "%sRemainAfterExit: %s\n"
1161 "%sGuessMainPID: %s\n"
1162 "%sType: %s\n"
1163 "%sRestart: %s\n"
1164 "%sNotifyAccess: %s\n",
1165 prefix, service_state_to_string(s->state),
1166 prefix, yes_no(s->permissions_start_only),
1167 prefix, yes_no(s->root_directory_start_only),
1168 prefix, yes_no(s->remain_after_exit),
1169 prefix, yes_no(s->guess_main_pid),
1170 prefix, service_type_to_string(s->type),
1171 prefix, service_restart_to_string(s->restart),
1172 prefix, notify_access_to_string(s->notify_access));
1173
1174 if (s->control_pid > 0)
1175 fprintf(f,
1176 "%sControl PID: %lu\n",
1177 prefix, (unsigned long) s->control_pid);
1178
1179 if (s->main_pid > 0)
1180 fprintf(f,
1181 "%sMain PID: %lu\n",
1182 prefix, (unsigned long) s->main_pid);
1183
1184 if (s->pid_file)
1185 fprintf(f,
1186 "%sPIDFile: %s\n",
1187 prefix, s->pid_file);
1188
1189 if (s->bus_name)
1190 fprintf(f,
1191 "%sBusName: %s\n"
1192 "%sBus Name Good: %s\n",
1193 prefix, s->bus_name,
1194 prefix, yes_no(s->bus_name_good));
1195
1196 exec_context_dump(&s->exec_context, f, prefix);
1197
1198 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1199
1200 if (!s->exec_command[c])
1201 continue;
1202
1203 fprintf(f, "%s-> %s:\n",
1204 prefix, service_exec_command_to_string(c));
1205
1206 exec_command_dump_list(s->exec_command[c], f, prefix2);
1207 }
1208
1209#ifdef HAVE_SYSV_COMPAT
1210 if (s->sysv_path)
1211 fprintf(f,
1212 "%sSysV Init Script Path: %s\n"
1213 "%sSysV Init Script has LSB Header: %s\n"
1214 "%sSysVEnabled: %s\n",
1215 prefix, s->sysv_path,
1216 prefix, yes_no(s->sysv_has_lsb),
1217 prefix, yes_no(s->sysv_enabled));
1218
1219 if (s->sysv_start_priority >= 0)
1220 fprintf(f,
1221 "%sSysVStartPriority: %i\n",
1222 prefix, s->sysv_start_priority);
1223
1224 if (s->sysv_runlevels)
1225 fprintf(f, "%sSysVRunLevels: %s\n",
1226 prefix, s->sysv_runlevels);
1227#endif
1228
1229 if (s->fsck_passno > 0)
1230 fprintf(f,
1231 "%sFsckPassNo: %i\n",
1232 prefix, s->fsck_passno);
1233
1234 if (s->status_text)
1235 fprintf(f, "%sStatus Text: %s\n",
1236 prefix, s->status_text);
1237
1238 free(p2);
1239}
1240
1241static int service_load_pid_file(Service *s) {
1242 char *k;
1243 int r;
1244 pid_t pid;
1245
1246 assert(s);
1247
1248 if (!s->pid_file)
1249 return -ENOENT;
1250
1251 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
1252 return r;
1253
1254 r = parse_pid(k, &pid);
1255 free(k);
1256
1257 if (r < 0)
1258 return r;
1259
1260 if (kill(pid, 0) < 0 && errno != EPERM) {
1261 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1262 (unsigned long) pid, s->pid_file);
1263 return -ESRCH;
1264 }
1265
1266 if ((r = service_set_main_pid(s, pid)) < 0)
1267 return r;
1268
1269 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1270 /* FIXME: we need to do something here */
1271 return r;
1272
1273 return 0;
1274}
1275
1276static int service_search_main_pid(Service *s) {
1277 pid_t pid;
1278 int r;
1279
1280 assert(s);
1281
1282 /* If we know it anyway, don't ever fallback to unreliable
1283 * heuristics */
1284 if (s->main_pid_known)
1285 return 0;
1286
1287 if (!s->guess_main_pid)
1288 return 0;
1289
1290 assert(s->main_pid <= 0);
1291
1292 if ((pid = cgroup_bonding_search_main_pid_list(s->meta.cgroup_bondings)) <= 0)
1293 return -ENOENT;
1294
1295 if ((r = service_set_main_pid(s, pid)) < 0)
1296 return r;
1297
1298 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1299 /* FIXME: we need to do something here */
1300 return r;
1301
1302 return 0;
1303}
1304
1305static int service_get_sockets(Service *s, Set **_set) {
1306 Set *set;
1307 Iterator i;
1308 char *t;
1309 int r;
1310
1311 assert(s);
1312 assert(_set);
1313
1314 if (s->socket_fd >= 0)
1315 return 0;
1316
1317 if (!set_isempty(s->configured_sockets))
1318 return 0;
1319
1320 /* Collects all Socket objects that belong to this
1321 * service. Note that a service might have multiple sockets
1322 * via multiple names. */
1323
1324 if (!(set = set_new(NULL, NULL)))
1325 return -ENOMEM;
1326
1327 SET_FOREACH(t, s->meta.names, i) {
1328 char *k;
1329 Unit *p;
1330
1331 /* Look for all socket objects that go by any of our
1332 * units and collect their fds */
1333
1334 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1335 r = -ENOMEM;
1336 goto fail;
1337 }
1338
1339 p = manager_get_unit(s->meta.manager, k);
1340 free(k);
1341
1342 if (!p)
1343 continue;
1344
1345 if ((r = set_put(set, p)) < 0)
1346 goto fail;
1347 }
1348
1349 *_set = set;
1350 return 0;
1351
1352fail:
1353 set_free(set);
1354 return r;
1355}
1356
1357static int service_notify_sockets_dead(Service *s) {
1358 Iterator i;
1359 Set *set, *free_set = NULL;
1360 Socket *sock;
1361 int r;
1362
1363 assert(s);
1364
1365 /* Notifies all our sockets when we die */
1366
1367 if (s->socket_fd >= 0)
1368 return 0;
1369
1370 if (!set_isempty(s->configured_sockets))
1371 set = s->configured_sockets;
1372 else {
1373 if ((r = service_get_sockets(s, &free_set)) < 0)
1374 return r;
1375
1376 set = free_set;
1377 }
1378
1379 SET_FOREACH(sock, set, i)
1380 socket_notify_service_dead(sock);
1381
1382 set_free(free_set);
1383
1384 return 0;
1385}
1386
1387static void service_set_state(Service *s, ServiceState state) {
1388 ServiceState old_state;
1389 assert(s);
1390
1391 old_state = s->state;
1392 s->state = state;
1393
1394 if (state != SERVICE_START_PRE &&
1395 state != SERVICE_START &&
1396 state != SERVICE_START_POST &&
1397 state != SERVICE_RELOAD &&
1398 state != SERVICE_STOP &&
1399 state != SERVICE_STOP_SIGTERM &&
1400 state != SERVICE_STOP_SIGKILL &&
1401 state != SERVICE_STOP_POST &&
1402 state != SERVICE_FINAL_SIGTERM &&
1403 state != SERVICE_FINAL_SIGKILL &&
1404 state != SERVICE_AUTO_RESTART)
1405 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1406
1407 if (state != SERVICE_START &&
1408 state != SERVICE_START_POST &&
1409 state != SERVICE_RUNNING &&
1410 state != SERVICE_RELOAD &&
1411 state != SERVICE_STOP &&
1412 state != SERVICE_STOP_SIGTERM &&
1413 state != SERVICE_STOP_SIGKILL) {
1414 service_unwatch_main_pid(s);
1415 s->main_command = NULL;
1416 }
1417
1418 if (state != SERVICE_START_PRE &&
1419 state != SERVICE_START &&
1420 state != SERVICE_START_POST &&
1421 state != SERVICE_RELOAD &&
1422 state != SERVICE_STOP &&
1423 state != SERVICE_STOP_SIGTERM &&
1424 state != SERVICE_STOP_SIGKILL &&
1425 state != SERVICE_STOP_POST &&
1426 state != SERVICE_FINAL_SIGTERM &&
1427 state != SERVICE_FINAL_SIGKILL) {
1428 service_unwatch_control_pid(s);
1429 s->control_command = NULL;
1430 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1431 }
1432
1433 if (state == SERVICE_DEAD ||
1434 state == SERVICE_STOP ||
1435 state == SERVICE_STOP_SIGTERM ||
1436 state == SERVICE_STOP_SIGKILL ||
1437 state == SERVICE_STOP_POST ||
1438 state == SERVICE_FINAL_SIGTERM ||
1439 state == SERVICE_FINAL_SIGKILL ||
1440 state == SERVICE_FAILED ||
1441 state == SERVICE_AUTO_RESTART)
1442 service_notify_sockets_dead(s);
1443
1444 if (state != SERVICE_START_PRE &&
1445 state != SERVICE_START &&
1446 state != SERVICE_START_POST &&
1447 state != SERVICE_RUNNING &&
1448 state != SERVICE_RELOAD &&
1449 state != SERVICE_STOP &&
1450 state != SERVICE_STOP_SIGTERM &&
1451 state != SERVICE_STOP_SIGKILL &&
1452 state != SERVICE_STOP_POST &&
1453 state != SERVICE_FINAL_SIGTERM &&
1454 state != SERVICE_FINAL_SIGKILL &&
1455 !(state == SERVICE_DEAD && s->meta.job)) {
1456 service_close_socket_fd(s);
1457 service_connection_unref(s);
1458 }
1459
1460 /* For the inactive states unit_notify() will trim the cgroup,
1461 * but for exit we have to do that ourselves... */
1462 if (state == SERVICE_EXITED)
1463 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1464
1465 if (old_state != state)
1466 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1467
1468 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], !s->reload_failure);
1469 s->reload_failure = false;
1470}
1471
1472static int service_coldplug(Unit *u) {
1473 Service *s = SERVICE(u);
1474 int r;
1475
1476 assert(s);
1477 assert(s->state == SERVICE_DEAD);
1478
1479 if (s->deserialized_state != s->state) {
1480
1481 if (s->deserialized_state == SERVICE_START_PRE ||
1482 s->deserialized_state == SERVICE_START ||
1483 s->deserialized_state == SERVICE_START_POST ||
1484 s->deserialized_state == SERVICE_RELOAD ||
1485 s->deserialized_state == SERVICE_STOP ||
1486 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1487 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1488 s->deserialized_state == SERVICE_STOP_POST ||
1489 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1490 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1491 s->deserialized_state == SERVICE_AUTO_RESTART) {
1492
1493 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1494 usec_t k;
1495
1496 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1497
1498 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1499 return r;
1500 }
1501 }
1502
1503 if ((s->deserialized_state == SERVICE_START &&
1504 (s->type == SERVICE_FORKING ||
1505 s->type == SERVICE_DBUS ||
1506 s->type == SERVICE_ONESHOT ||
1507 s->type == SERVICE_NOTIFY)) ||
1508 s->deserialized_state == SERVICE_START_POST ||
1509 s->deserialized_state == SERVICE_RUNNING ||
1510 s->deserialized_state == SERVICE_RELOAD ||
1511 s->deserialized_state == SERVICE_STOP ||
1512 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1513 s->deserialized_state == SERVICE_STOP_SIGKILL)
1514 if (s->main_pid > 0)
1515 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1516 return r;
1517
1518 if (s->deserialized_state == SERVICE_START_PRE ||
1519 s->deserialized_state == SERVICE_START ||
1520 s->deserialized_state == SERVICE_START_POST ||
1521 s->deserialized_state == SERVICE_RELOAD ||
1522 s->deserialized_state == SERVICE_STOP ||
1523 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1524 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1525 s->deserialized_state == SERVICE_STOP_POST ||
1526 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1527 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1528 if (s->control_pid > 0)
1529 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1530 return r;
1531
1532 service_set_state(s, s->deserialized_state);
1533 }
1534
1535 return 0;
1536}
1537
1538static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1539 Iterator i;
1540 int r;
1541 int *rfds = NULL;
1542 unsigned rn_fds = 0;
1543 Set *set, *free_set = NULL;
1544 Socket *sock;
1545
1546 assert(s);
1547 assert(fds);
1548 assert(n_fds);
1549
1550 if (s->socket_fd >= 0)
1551 return 0;
1552
1553 if (!set_isempty(s->configured_sockets))
1554 set = s->configured_sockets;
1555 else {
1556 if ((r = service_get_sockets(s, &free_set)) < 0)
1557 return r;
1558
1559 set = free_set;
1560 }
1561
1562 SET_FOREACH(sock, set, i) {
1563 int *cfds;
1564 unsigned cn_fds;
1565
1566 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1567 goto fail;
1568
1569 if (!cfds)
1570 continue;
1571
1572 if (!rfds) {
1573 rfds = cfds;
1574 rn_fds = cn_fds;
1575 } else {
1576 int *t;
1577
1578 if (!(t = new(int, rn_fds+cn_fds))) {
1579 free(cfds);
1580 r = -ENOMEM;
1581 goto fail;
1582 }
1583
1584 memcpy(t, rfds, rn_fds);
1585 memcpy(t+rn_fds, cfds, cn_fds);
1586 free(rfds);
1587 free(cfds);
1588
1589 rfds = t;
1590 rn_fds = rn_fds+cn_fds;
1591 }
1592 }
1593
1594 *fds = rfds;
1595 *n_fds = rn_fds;
1596
1597 set_free(free_set);
1598
1599 return 0;
1600
1601fail:
1602 set_free(set);
1603 free(rfds);
1604
1605 return r;
1606}
1607
1608static int service_spawn(
1609 Service *s,
1610 ExecCommand *c,
1611 bool timeout,
1612 bool pass_fds,
1613 bool apply_permissions,
1614 bool apply_chroot,
1615 bool apply_tty_stdin,
1616 bool set_notify_socket,
1617 pid_t *_pid) {
1618
1619 pid_t pid;
1620 int r;
1621 int *fds = NULL, *fdsbuf = NULL;
1622 unsigned n_fds = 0, n_env = 0;
1623 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1624
1625 assert(s);
1626 assert(c);
1627 assert(_pid);
1628
1629 if (pass_fds ||
1630 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1631 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1632 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1633
1634 if (s->socket_fd >= 0) {
1635 fds = &s->socket_fd;
1636 n_fds = 1;
1637 } else {
1638 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1639 goto fail;
1640
1641 fds = fdsbuf;
1642 }
1643 }
1644
1645 if (timeout && s->timeout_usec) {
1646 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1647 goto fail;
1648 } else
1649 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1650
1651 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1652 r = -ENOMEM;
1653 goto fail;
1654 }
1655
1656 if (!(our_env = new0(char*, 4))) {
1657 r = -ENOMEM;
1658 goto fail;
1659 }
1660
1661 if (set_notify_socket)
1662 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
1663 r = -ENOMEM;
1664 goto fail;
1665 }
1666
1667 if (s->main_pid > 0)
1668 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1669 r = -ENOMEM;
1670 goto fail;
1671 }
1672
1673 if (!(final_env = strv_env_merge(2,
1674 s->meta.manager->environment,
1675 our_env,
1676 NULL))) {
1677 r = -ENOMEM;
1678 goto fail;
1679 }
1680
1681 r = exec_spawn(c,
1682 argv,
1683 &s->exec_context,
1684 fds, n_fds,
1685 final_env,
1686 apply_permissions,
1687 apply_chroot,
1688 apply_tty_stdin,
1689 s->meta.manager->confirm_spawn,
1690 s->meta.cgroup_bondings,
1691 &pid);
1692
1693 if (r < 0)
1694 goto fail;
1695
1696
1697 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1698 /* FIXME: we need to do something here */
1699 goto fail;
1700
1701 free(fdsbuf);
1702 strv_free(argv);
1703 strv_free(our_env);
1704 strv_free(final_env);
1705
1706 *_pid = pid;
1707
1708 return 0;
1709
1710fail:
1711 free(fdsbuf);
1712 strv_free(argv);
1713 strv_free(our_env);
1714 strv_free(final_env);
1715
1716 if (timeout)
1717 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1718
1719 return r;
1720}
1721
1722static int main_pid_good(Service *s) {
1723 assert(s);
1724
1725 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1726 * don't know */
1727
1728 /* If we know the pid file, then lets just check if it is
1729 * still valid */
1730 if (s->main_pid_known)
1731 return s->main_pid > 0;
1732
1733 /* We don't know the pid */
1734 return -EAGAIN;
1735}
1736
1737static int control_pid_good(Service *s) {
1738 assert(s);
1739
1740 return s->control_pid > 0;
1741}
1742
1743static int cgroup_good(Service *s) {
1744 int r;
1745
1746 assert(s);
1747
1748 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1749 return r;
1750
1751 return !r;
1752}
1753
1754static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1755 int r;
1756 assert(s);
1757
1758 if (!success)
1759 s->failure = true;
1760
1761 if (allow_restart &&
1762 !s->forbid_restart &&
1763 (s->restart == SERVICE_RESTART_ALWAYS ||
1764 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) ||
1765 (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) ||
1766 (s->restart == SERVICE_RESTART_ON_ABORT && s->failure &&
1767 (s->main_exec_status.code == CLD_KILLED ||
1768 s->main_exec_status.code == CLD_DUMPED)))) {
1769
1770 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1771 goto fail;
1772
1773 service_set_state(s, SERVICE_AUTO_RESTART);
1774 } else
1775 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
1776
1777 s->forbid_restart = false;
1778
1779 return;
1780
1781fail:
1782 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1783 service_enter_dead(s, false, false);
1784}
1785
1786static void service_enter_signal(Service *s, ServiceState state, bool success);
1787
1788static void service_enter_stop_post(Service *s, bool success) {
1789 int r;
1790 assert(s);
1791
1792 if (!success)
1793 s->failure = true;
1794
1795 service_unwatch_control_pid(s);
1796
1797 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1798 s->control_command_id = SERVICE_EXEC_STOP_POST;
1799
1800 if ((r = service_spawn(s,
1801 s->control_command,
1802 true,
1803 false,
1804 !s->permissions_start_only,
1805 !s->root_directory_start_only,
1806 true,
1807 false,
1808 &s->control_pid)) < 0)
1809 goto fail;
1810
1811
1812 service_set_state(s, SERVICE_STOP_POST);
1813 } else
1814 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1815
1816 return;
1817
1818fail:
1819 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1820 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1821}
1822
1823static void service_enter_signal(Service *s, ServiceState state, bool success) {
1824 int r;
1825 Set *pid_set = NULL;
1826 bool wait_for_exit = false;
1827
1828 assert(s);
1829
1830 if (!success)
1831 s->failure = true;
1832
1833 if (s->exec_context.kill_mode != KILL_NONE) {
1834 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1835
1836 if (s->main_pid > 0) {
1837 if (kill_and_sigcont(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
1838 -s->main_pid :
1839 s->main_pid, sig) < 0 && errno != ESRCH)
1840
1841 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1842 else
1843 wait_for_exit = true;
1844 }
1845
1846 if (s->control_pid > 0) {
1847 if (kill_and_sigcont(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
1848 -s->control_pid :
1849 s->control_pid, sig) < 0 && errno != ESRCH)
1850
1851 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1852 else
1853 wait_for_exit = true;
1854 }
1855
1856 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1857
1858 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1859 r = -ENOMEM;
1860 goto fail;
1861 }
1862
1863 /* Exclude the main/control pids from being killed via the cgroup */
1864 if (s->main_pid > 0)
1865 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1866 goto fail;
1867
1868 if (s->control_pid > 0)
1869 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1870 goto fail;
1871
1872 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, true, pid_set)) < 0) {
1873 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1874 log_warning("Failed to kill control group: %s", strerror(-r));
1875 } else if (r > 0)
1876 wait_for_exit = true;
1877
1878 set_free(pid_set);
1879 }
1880 }
1881
1882 if (wait_for_exit) {
1883 if (s->timeout_usec > 0)
1884 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1885 goto fail;
1886
1887 service_set_state(s, state);
1888 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1889 service_enter_stop_post(s, true);
1890 else
1891 service_enter_dead(s, true, true);
1892
1893 return;
1894
1895fail:
1896 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1897
1898 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1899 service_enter_stop_post(s, false);
1900 else
1901 service_enter_dead(s, false, true);
1902
1903 if (pid_set)
1904 set_free(pid_set);
1905}
1906
1907static void service_enter_stop(Service *s, bool success) {
1908 int r;
1909
1910 assert(s);
1911
1912 if (!success)
1913 s->failure = true;
1914
1915 service_unwatch_control_pid(s);
1916
1917 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1918 s->control_command_id = SERVICE_EXEC_STOP;
1919
1920 if ((r = service_spawn(s,
1921 s->control_command,
1922 true,
1923 false,
1924 !s->permissions_start_only,
1925 !s->root_directory_start_only,
1926 false,
1927 false,
1928 &s->control_pid)) < 0)
1929 goto fail;
1930
1931 service_set_state(s, SERVICE_STOP);
1932 } else
1933 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1934
1935 return;
1936
1937fail:
1938 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
1939 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1940}
1941
1942static void service_enter_running(Service *s, bool success) {
1943 int main_pid_ok, cgroup_ok;
1944 assert(s);
1945
1946 if (!success)
1947 s->failure = true;
1948
1949 main_pid_ok = main_pid_good(s);
1950 cgroup_ok = cgroup_good(s);
1951
1952 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
1953 (s->bus_name_good || s->type != SERVICE_DBUS))
1954 service_set_state(s, SERVICE_RUNNING);
1955 else if (s->remain_after_exit)
1956 service_set_state(s, SERVICE_EXITED);
1957 else
1958 service_enter_stop(s, true);
1959}
1960
1961static void service_enter_start_post(Service *s) {
1962 int r;
1963 assert(s);
1964
1965 service_unwatch_control_pid(s);
1966
1967 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
1968 s->control_command_id = SERVICE_EXEC_START_POST;
1969
1970 if ((r = service_spawn(s,
1971 s->control_command,
1972 true,
1973 false,
1974 !s->permissions_start_only,
1975 !s->root_directory_start_only,
1976 false,
1977 false,
1978 &s->control_pid)) < 0)
1979 goto fail;
1980
1981 service_set_state(s, SERVICE_START_POST);
1982 } else
1983 service_enter_running(s, true);
1984
1985 return;
1986
1987fail:
1988 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
1989 service_enter_stop(s, false);
1990}
1991
1992static void service_enter_start(Service *s) {
1993 pid_t pid;
1994 int r;
1995 ExecCommand *c;
1996
1997 assert(s);
1998
1999 assert(s->exec_command[SERVICE_EXEC_START]);
2000 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2001
2002 if (s->type == SERVICE_FORKING)
2003 service_unwatch_control_pid(s);
2004 else
2005 service_unwatch_main_pid(s);
2006
2007 if (s->type == SERVICE_FORKING) {
2008 s->control_command_id = SERVICE_EXEC_START;
2009 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2010
2011 s->main_command = NULL;
2012 } else {
2013 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2014 s->control_command = NULL;
2015
2016 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2017 }
2018
2019 if ((r = service_spawn(s,
2020 c,
2021 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
2022 true,
2023 true,
2024 true,
2025 true,
2026 s->notify_access != NOTIFY_NONE,
2027 &pid)) < 0)
2028 goto fail;
2029
2030 if (s->type == SERVICE_SIMPLE) {
2031 /* For simple services we immediately start
2032 * the START_POST binaries. */
2033
2034 service_set_main_pid(s, pid);
2035 service_enter_start_post(s);
2036
2037 } else if (s->type == SERVICE_FORKING) {
2038
2039 /* For forking services we wait until the start
2040 * process exited. */
2041
2042 s->control_pid = pid;
2043 service_set_state(s, SERVICE_START);
2044
2045 } else if (s->type == SERVICE_ONESHOT ||
2046 s->type == SERVICE_DBUS ||
2047 s->type == SERVICE_NOTIFY) {
2048
2049 /* For oneshot services we wait until the start
2050 * process exited, too, but it is our main process. */
2051
2052 /* For D-Bus services we know the main pid right away,
2053 * but wait for the bus name to appear on the
2054 * bus. Notify services are similar. */
2055
2056 service_set_main_pid(s, pid);
2057 service_set_state(s, SERVICE_START);
2058 } else
2059 assert_not_reached("Unknown service type");
2060
2061 return;
2062
2063fail:
2064 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
2065 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2066}
2067
2068static void service_enter_start_pre(Service *s) {
2069 int r;
2070
2071 assert(s);
2072
2073 service_unwatch_control_pid(s);
2074
2075 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2076 s->control_command_id = SERVICE_EXEC_START_PRE;
2077
2078 if ((r = service_spawn(s,
2079 s->control_command,
2080 true,
2081 false,
2082 !s->permissions_start_only,
2083 !s->root_directory_start_only,
2084 true,
2085 false,
2086 &s->control_pid)) < 0)
2087 goto fail;
2088
2089 service_set_state(s, SERVICE_START_PRE);
2090 } else
2091 service_enter_start(s);
2092
2093 return;
2094
2095fail:
2096 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
2097 service_enter_dead(s, false, true);
2098}
2099
2100static void service_enter_restart(Service *s) {
2101 int r;
2102 DBusError error;
2103
2104 assert(s);
2105 dbus_error_init(&error);
2106
2107 if (s->meta.job) {
2108 log_info("Job pending for unit, delaying automatic restart.");
2109
2110 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2111 goto fail;
2112 }
2113
2114 service_enter_dead(s, true, false);
2115
2116 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
2117 goto fail;
2118
2119 log_debug("%s scheduled restart job.", s->meta.id);
2120 return;
2121
2122fail:
2123 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
2124 service_enter_dead(s, false, false);
2125
2126 dbus_error_free(&error);
2127}
2128
2129static void service_enter_reload(Service *s) {
2130 int r;
2131
2132 assert(s);
2133
2134 service_unwatch_control_pid(s);
2135
2136 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2137 s->control_command_id = SERVICE_EXEC_RELOAD;
2138
2139 if ((r = service_spawn(s,
2140 s->control_command,
2141 true,
2142 false,
2143 !s->permissions_start_only,
2144 !s->root_directory_start_only,
2145 false,
2146 false,
2147 &s->control_pid)) < 0)
2148 goto fail;
2149
2150 service_set_state(s, SERVICE_RELOAD);
2151 } else
2152 service_enter_running(s, true);
2153
2154 return;
2155
2156fail:
2157 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
2158 s->reload_failure = true;
2159 service_enter_running(s, true);
2160}
2161
2162static void service_run_next_control(Service *s, bool success) {
2163 int r;
2164
2165 assert(s);
2166 assert(s->control_command);
2167 assert(s->control_command->command_next);
2168
2169 if (!success)
2170 s->failure = true;
2171
2172 assert(s->control_command_id != SERVICE_EXEC_START);
2173
2174 s->control_command = s->control_command->command_next;
2175 service_unwatch_control_pid(s);
2176
2177 if ((r = service_spawn(s,
2178 s->control_command,
2179 true,
2180 false,
2181 !s->permissions_start_only,
2182 !s->root_directory_start_only,
2183 s->control_command_id == SERVICE_EXEC_START_PRE ||
2184 s->control_command_id == SERVICE_EXEC_STOP_POST,
2185 false,
2186 &s->control_pid)) < 0)
2187 goto fail;
2188
2189 return;
2190
2191fail:
2192 log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
2193
2194 if (s->state == SERVICE_START_PRE)
2195 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2196 else if (s->state == SERVICE_STOP)
2197 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2198 else if (s->state == SERVICE_STOP_POST)
2199 service_enter_dead(s, false, true);
2200 else if (s->state == SERVICE_RELOAD) {
2201 s->reload_failure = true;
2202 service_enter_running(s, true);
2203 } else
2204 service_enter_stop(s, false);
2205}
2206
2207static void service_run_next_main(Service *s, bool success) {
2208 pid_t pid;
2209 int r;
2210
2211 assert(s);
2212 assert(s->main_command);
2213 assert(s->main_command->command_next);
2214 assert(s->type == SERVICE_ONESHOT);
2215
2216 if (!success)
2217 s->failure = true;
2218
2219 s->main_command = s->main_command->command_next;
2220 service_unwatch_main_pid(s);
2221
2222 if ((r = service_spawn(s,
2223 s->main_command,
2224 false,
2225 true,
2226 true,
2227 true,
2228 true,
2229 s->notify_access != NOTIFY_NONE,
2230 &pid)) < 0)
2231 goto fail;
2232
2233 service_set_main_pid(s, pid);
2234
2235 return;
2236
2237fail:
2238 log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
2239 service_enter_stop(s, false);
2240}
2241
2242static int service_start(Unit *u) {
2243 Service *s = SERVICE(u);
2244
2245 assert(s);
2246
2247 /* We cannot fulfill this request right now, try again later
2248 * please! */
2249 if (s->state == SERVICE_STOP ||
2250 s->state == SERVICE_STOP_SIGTERM ||
2251 s->state == SERVICE_STOP_SIGKILL ||
2252 s->state == SERVICE_STOP_POST ||
2253 s->state == SERVICE_FINAL_SIGTERM ||
2254 s->state == SERVICE_FINAL_SIGKILL)
2255 return -EAGAIN;
2256
2257 /* Already on it! */
2258 if (s->state == SERVICE_START_PRE ||
2259 s->state == SERVICE_START ||
2260 s->state == SERVICE_START_POST)
2261 return 0;
2262
2263 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
2264
2265 /* Make sure we don't enter a busy loop of some kind. */
2266 if (!ratelimit_test(&s->ratelimit)) {
2267 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
2268 return -ECANCELED;
2269 }
2270
2271 s->failure = false;
2272 s->main_pid_known = false;
2273 s->forbid_restart = false;
2274
2275 service_enter_start_pre(s);
2276 return 0;
2277}
2278
2279static int service_stop(Unit *u) {
2280 Service *s = SERVICE(u);
2281
2282 assert(s);
2283
2284 /* This is a user request, so don't do restarts on this
2285 * shutdown. */
2286 s->forbid_restart = true;
2287
2288 /* Already on it */
2289 if (s->state == SERVICE_STOP ||
2290 s->state == SERVICE_STOP_SIGTERM ||
2291 s->state == SERVICE_STOP_SIGKILL ||
2292 s->state == SERVICE_STOP_POST ||
2293 s->state == SERVICE_FINAL_SIGTERM ||
2294 s->state == SERVICE_FINAL_SIGKILL)
2295 return 0;
2296
2297 /* Don't allow a restart */
2298 if (s->state == SERVICE_AUTO_RESTART) {
2299 service_set_state(s, SERVICE_DEAD);
2300 return 0;
2301 }
2302
2303 /* If there's already something running we go directly into
2304 * kill mode. */
2305 if (s->state == SERVICE_START_PRE ||
2306 s->state == SERVICE_START ||
2307 s->state == SERVICE_START_POST ||
2308 s->state == SERVICE_RELOAD) {
2309 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2310 return 0;
2311 }
2312
2313 assert(s->state == SERVICE_RUNNING ||
2314 s->state == SERVICE_EXITED);
2315
2316 service_enter_stop(s, true);
2317 return 0;
2318}
2319
2320static int service_reload(Unit *u) {
2321 Service *s = SERVICE(u);
2322
2323 assert(s);
2324
2325 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2326
2327 service_enter_reload(s);
2328 return 0;
2329}
2330
2331static bool service_can_reload(Unit *u) {
2332 Service *s = SERVICE(u);
2333
2334 assert(s);
2335
2336 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2337}
2338
2339static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2340 Service *s = SERVICE(u);
2341
2342 assert(u);
2343 assert(f);
2344 assert(fds);
2345
2346 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2347 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2348
2349 if (s->control_pid > 0)
2350 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2351
2352 if (s->main_pid_known && s->main_pid > 0)
2353 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2354
2355 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2356
2357 if (s->status_text)
2358 unit_serialize_item(u, f, "status-text", s->status_text);
2359
2360 /* There's a minor uncleanliness here: if there are multiple
2361 * commands attached here, we will start from the first one
2362 * again */
2363 if (s->control_command_id >= 0)
2364 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2365
2366 if (s->socket_fd >= 0) {
2367 int copy;
2368
2369 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2370 return copy;
2371
2372 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2373 }
2374
2375 if (s->main_exec_status.pid > 0) {
2376 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2377 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2378 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2379
2380 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2381 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2382 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2383 }
2384 }
2385
2386 return 0;
2387}
2388
2389static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2390 Service *s = SERVICE(u);
2391
2392 assert(u);
2393 assert(key);
2394 assert(value);
2395 assert(fds);
2396
2397 if (streq(key, "state")) {
2398 ServiceState state;
2399
2400 if ((state = service_state_from_string(value)) < 0)
2401 log_debug("Failed to parse state value %s", value);
2402 else
2403 s->deserialized_state = state;
2404 } else if (streq(key, "failure")) {
2405 int b;
2406
2407 if ((b = parse_boolean(value)) < 0)
2408 log_debug("Failed to parse failure value %s", value);
2409 else
2410 s->failure = b || s->failure;
2411 } else if (streq(key, "control-pid")) {
2412 pid_t pid;
2413
2414 if (parse_pid(value, &pid) < 0)
2415 log_debug("Failed to parse control-pid value %s", value);
2416 else
2417 s->control_pid = pid;
2418 } else if (streq(key, "main-pid")) {
2419 pid_t pid;
2420
2421 if (parse_pid(value, &pid) < 0)
2422 log_debug("Failed to parse main-pid value %s", value);
2423 else
2424 service_set_main_pid(s, (pid_t) pid);
2425 } else if (streq(key, "main-pid-known")) {
2426 int b;
2427
2428 if ((b = parse_boolean(value)) < 0)
2429 log_debug("Failed to parse main-pid-known value %s", value);
2430 else
2431 s->main_pid_known = b;
2432 } else if (streq(key, "status-text")) {
2433 char *t;
2434
2435 if ((t = strdup(value))) {
2436 free(s->status_text);
2437 s->status_text = t;
2438 }
2439
2440 } else if (streq(key, "control-command")) {
2441 ServiceExecCommand id;
2442
2443 if ((id = service_exec_command_from_string(value)) < 0)
2444 log_debug("Failed to parse exec-command value %s", value);
2445 else {
2446 s->control_command_id = id;
2447 s->control_command = s->exec_command[id];
2448 }
2449 } else if (streq(key, "socket-fd")) {
2450 int fd;
2451
2452 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2453 log_debug("Failed to parse socket-fd value %s", value);
2454 else {
2455
2456 if (s->socket_fd >= 0)
2457 close_nointr_nofail(s->socket_fd);
2458 s->socket_fd = fdset_remove(fds, fd);
2459 }
2460 } else if (streq(key, "main-exec-status-pid")) {
2461 pid_t pid;
2462
2463 if (parse_pid(value, &pid) < 0)
2464 log_debug("Failed to parse main-exec-status-pid value %s", value);
2465 else
2466 s->main_exec_status.pid = pid;
2467 } else if (streq(key, "main-exec-status-code")) {
2468 int i;
2469
2470 if (safe_atoi(value, &i) < 0)
2471 log_debug("Failed to parse main-exec-status-code value %s", value);
2472 else
2473 s->main_exec_status.code = i;
2474 } else if (streq(key, "main-exec-status-status")) {
2475 int i;
2476
2477 if (safe_atoi(value, &i) < 0)
2478 log_debug("Failed to parse main-exec-status-status value %s", value);
2479 else
2480 s->main_exec_status.status = i;
2481 } else if (streq(key, "main-exec-status-start"))
2482 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2483 else if (streq(key, "main-exec-status-exit"))
2484 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2485 else
2486 log_debug("Unknown serialization key '%s'", key);
2487
2488 return 0;
2489}
2490
2491static UnitActiveState service_active_state(Unit *u) {
2492 assert(u);
2493
2494 return state_translation_table[SERVICE(u)->state];
2495}
2496
2497static const char *service_sub_state_to_string(Unit *u) {
2498 assert(u);
2499
2500 return service_state_to_string(SERVICE(u)->state);
2501}
2502
2503static bool service_check_gc(Unit *u) {
2504 Service *s = SERVICE(u);
2505
2506 assert(s);
2507
2508 /* Never clean up services that still have a process around,
2509 * even if the service is formally dead. */
2510 if (cgroup_good(s) > 0 ||
2511 main_pid_good(s) > 0 ||
2512 control_pid_good(s) > 0)
2513 return true;
2514
2515#ifdef HAVE_SYSV_COMPAT
2516 if (s->sysv_path)
2517 return true;
2518#endif
2519
2520 return false;
2521}
2522
2523static bool service_check_snapshot(Unit *u) {
2524 Service *s = SERVICE(u);
2525
2526 assert(s);
2527
2528 return !s->got_socket_fd;
2529}
2530
2531static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2532 Service *s = SERVICE(u);
2533 bool success;
2534
2535 assert(s);
2536 assert(pid >= 0);
2537
2538 if (!s->meta.fragment_path)
2539 success = is_clean_exit_lsb(code, status);
2540 else
2541 success = is_clean_exit(code, status);
2542
2543 if (s->main_pid == pid) {
2544
2545 s->main_pid = 0;
2546 exec_status_exit(&s->main_exec_status, pid, code, status, s->exec_context.utmp_id);
2547
2548 /* If this is not a forking service than the main
2549 * process got started and hence we copy the exit
2550 * status so that it is recorded both as main and as
2551 * control process exit status */
2552 if (s->main_command) {
2553 s->main_command->exec_status = s->main_exec_status;
2554
2555 if (s->main_command->ignore)
2556 success = true;
2557 }
2558
2559 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2560 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2561 s->failure = s->failure || !success;
2562
2563 if (s->main_command &&
2564 s->main_command->command_next &&
2565 success) {
2566
2567 /* There is another command to *
2568 * execute, so let's do that. */
2569
2570 log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2571 service_run_next_main(s, success);
2572
2573 } else {
2574
2575 /* The service exited, so the service is officially
2576 * gone. */
2577 s->main_command = NULL;
2578
2579 switch (s->state) {
2580
2581 case SERVICE_START_POST:
2582 case SERVICE_RELOAD:
2583 case SERVICE_STOP:
2584 /* Need to wait until the operation is
2585 * done */
2586 break;
2587
2588 case SERVICE_START:
2589 if (s->type == SERVICE_ONESHOT) {
2590 /* This was our main goal, so let's go on */
2591 if (success)
2592 service_enter_start_post(s);
2593 else
2594 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2595 break;
2596 } else {
2597 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2598
2599 /* Fall through */
2600 }
2601
2602 case SERVICE_RUNNING:
2603 service_enter_running(s, success);
2604 break;
2605
2606 case SERVICE_STOP_SIGTERM:
2607 case SERVICE_STOP_SIGKILL:
2608
2609 if (!control_pid_good(s))
2610 service_enter_stop_post(s, success);
2611
2612 /* If there is still a control process, wait for that first */
2613 break;
2614
2615 default:
2616 assert_not_reached("Uh, main process died at wrong time.");
2617 }
2618 }
2619
2620 } else if (s->control_pid == pid) {
2621
2622 s->control_pid = 0;
2623
2624 if (s->control_command) {
2625 exec_status_exit(&s->control_command->exec_status, pid, code, status, s->exec_context.utmp_id);
2626
2627 if (s->control_command->ignore)
2628 success = true;
2629 }
2630
2631 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2632 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2633 s->failure = s->failure || !success;
2634
2635 if (s->control_command &&
2636 s->control_command->command_next &&
2637 success) {
2638
2639 /* There is another command to *
2640 * execute, so let's do that. */
2641
2642 log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2643 service_run_next_control(s, success);
2644
2645 } else {
2646 /* No further commands for this step, so let's
2647 * figure out what to do next */
2648
2649 s->control_command = NULL;
2650 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2651
2652 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2653
2654 switch (s->state) {
2655
2656 case SERVICE_START_PRE:
2657 if (success)
2658 service_enter_start(s);
2659 else
2660 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2661 break;
2662
2663 case SERVICE_START:
2664 assert(s->type == SERVICE_FORKING);
2665
2666 /* Let's try to load the pid
2667 * file here if we can. We
2668 * ignore the return value,
2669 * since the PID file might
2670 * actually be created by a
2671 * START_POST script */
2672
2673 if (success) {
2674 service_load_pid_file(s);
2675 service_search_main_pid(s);
2676
2677 service_enter_start_post(s);
2678 } else
2679 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2680
2681 break;
2682
2683 case SERVICE_START_POST:
2684 if (success && s->pid_file && !s->main_pid_known) {
2685 int r;
2686
2687 /* Hmm, let's see if we can
2688 * load the pid now after the
2689 * start-post scripts got
2690 * executed. */
2691
2692 if ((r = service_load_pid_file(s)) < 0)
2693 log_warning("%s: failed to load PID file %s: %s", s->meta.id, s->pid_file, strerror(-r));
2694 }
2695
2696 s->reload_failure = !success;
2697 service_enter_running(s, true);
2698 break;
2699
2700 case SERVICE_RELOAD:
2701 if (success) {
2702 service_load_pid_file(s);
2703 service_search_main_pid(s);
2704 }
2705
2706 s->reload_failure = !success;
2707 service_enter_running(s, true);
2708 break;
2709
2710 case SERVICE_STOP:
2711 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2712 break;
2713
2714 case SERVICE_STOP_SIGTERM:
2715 case SERVICE_STOP_SIGKILL:
2716 if (main_pid_good(s) <= 0)
2717 service_enter_stop_post(s, success);
2718
2719 /* If there is still a service
2720 * process around, wait until
2721 * that one quit, too */
2722 break;
2723
2724 case SERVICE_STOP_POST:
2725 case SERVICE_FINAL_SIGTERM:
2726 case SERVICE_FINAL_SIGKILL:
2727 service_enter_dead(s, success, true);
2728 break;
2729
2730 default:
2731 assert_not_reached("Uh, control process died at wrong time.");
2732 }
2733 }
2734 }
2735
2736 /* Notify clients about changed exit status */
2737 unit_add_to_dbus_queue(u);
2738}
2739
2740static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2741 Service *s = SERVICE(u);
2742
2743 assert(s);
2744 assert(elapsed == 1);
2745
2746 assert(w == &s->timer_watch);
2747
2748 switch (s->state) {
2749
2750 case SERVICE_START_PRE:
2751 case SERVICE_START:
2752 log_warning("%s operation timed out. Terminating.", u->meta.id);
2753 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2754 break;
2755
2756 case SERVICE_START_POST:
2757 log_warning("%s operation timed out. Stopping.", u->meta.id);
2758 service_enter_stop(s, false);
2759 break;
2760
2761 case SERVICE_RELOAD:
2762 log_warning("%s operation timed out. Stopping.", u->meta.id);
2763 s->reload_failure = true;
2764 service_enter_running(s, true);
2765 break;
2766
2767 case SERVICE_STOP:
2768 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2769 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2770 break;
2771
2772 case SERVICE_STOP_SIGTERM:
2773 if (s->exec_context.send_sigkill) {
2774 log_warning("%s stopping timed out. Killing.", u->meta.id);
2775 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2776 } else {
2777 log_warning("%s stopping timed out. Skipping SIGKILL.", u->meta.id);
2778 service_enter_stop_post(s, false);
2779 }
2780
2781 break;
2782
2783 case SERVICE_STOP_SIGKILL:
2784 /* Uh, we sent a SIGKILL and it is still not gone?
2785 * Must be something we cannot kill, so let's just be
2786 * weirded out and continue */
2787
2788 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2789 service_enter_stop_post(s, false);
2790 break;
2791
2792 case SERVICE_STOP_POST:
2793 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2794 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2795 break;
2796
2797 case SERVICE_FINAL_SIGTERM:
2798 if (s->exec_context.send_sigkill) {
2799 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2800 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2801 } else {
2802 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->meta.id);
2803 service_enter_dead(s, false, true);
2804 }
2805
2806 break;
2807
2808 case SERVICE_FINAL_SIGKILL:
2809 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
2810 service_enter_dead(s, false, true);
2811 break;
2812
2813 case SERVICE_AUTO_RESTART:
2814 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2815 service_enter_restart(s);
2816 break;
2817
2818 default:
2819 assert_not_reached("Timeout at wrong time.");
2820 }
2821}
2822
2823static void service_cgroup_notify_event(Unit *u) {
2824 Service *s = SERVICE(u);
2825
2826 assert(u);
2827
2828 log_debug("%s: cgroup is empty", u->meta.id);
2829
2830 switch (s->state) {
2831
2832 /* Waiting for SIGCHLD is usually more interesting,
2833 * because it includes return codes/signals. Which is
2834 * why we ignore the cgroup events for most cases,
2835 * except when we don't know pid which to expect the
2836 * SIGCHLD for. */
2837
2838 case SERVICE_RUNNING:
2839 service_enter_running(s, true);
2840 break;
2841
2842 case SERVICE_STOP_SIGTERM:
2843 case SERVICE_STOP_SIGKILL:
2844 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2845 service_enter_stop_post(s, true);
2846
2847 break;
2848
2849 case SERVICE_FINAL_SIGTERM:
2850 case SERVICE_FINAL_SIGKILL:
2851 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2852 service_enter_dead(s, true, true);
2853
2854 break;
2855
2856 default:
2857 ;
2858 }
2859}
2860
2861static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2862 Service *s = SERVICE(u);
2863 const char *e;
2864
2865 assert(u);
2866
2867 if (s->notify_access == NOTIFY_NONE) {
2868 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2869 u->meta.id, (unsigned long) pid);
2870 return;
2871 }
2872
2873 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2874 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2875 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2876 return;
2877 }
2878
2879 log_debug("%s: Got message", u->meta.id);
2880
2881 /* Interpret MAINPID= */
2882 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2883 (s->state == SERVICE_START ||
2884 s->state == SERVICE_START_POST ||
2885 s->state == SERVICE_RUNNING ||
2886 s->state == SERVICE_RELOAD)) {
2887
2888 if (parse_pid(e + 8, &pid) < 0)
2889 log_warning("Failed to parse notification message %s", e);
2890 else {
2891 log_debug("%s: got %s", u->meta.id, e);
2892 service_set_main_pid(s, pid);
2893 }
2894 }
2895
2896 /* Interpret READY= */
2897 if (s->type == SERVICE_NOTIFY &&
2898 s->state == SERVICE_START &&
2899 strv_find(tags, "READY=1")) {
2900 log_debug("%s: got READY=1", u->meta.id);
2901
2902 service_enter_start_post(s);
2903 }
2904
2905 /* Interpret STATUS= */
2906 if ((e = strv_find_prefix(tags, "STATUS="))) {
2907 char *t;
2908
2909 if (e[7]) {
2910 if (!(t = strdup(e+7))) {
2911 log_error("Failed to allocate string.");
2912 return;
2913 }
2914
2915 log_debug("%s: got %s", u->meta.id, e);
2916
2917 free(s->status_text);
2918 s->status_text = t;
2919 } else {
2920 free(s->status_text);
2921 s->status_text = NULL;
2922 }
2923
2924 }
2925
2926 /* Notify clients about changed status or main pid */
2927 unit_add_to_dbus_queue(u);
2928}
2929
2930#ifdef HAVE_SYSV_COMPAT
2931static int service_enumerate(Manager *m) {
2932 char **p;
2933 unsigned i;
2934 DIR *d = NULL;
2935 char *path = NULL, *fpath = NULL, *name = NULL;
2936 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
2937 Unit *service;
2938 Iterator j;
2939 int r;
2940
2941 assert(m);
2942
2943 zero(runlevel_services);
2944
2945 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
2946 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2947 struct dirent *de;
2948
2949 free(path);
2950 path = NULL;
2951 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2952 r = -ENOMEM;
2953 goto finish;
2954 }
2955
2956 if (d)
2957 closedir(d);
2958
2959 if (!(d = opendir(path))) {
2960 if (errno != ENOENT)
2961 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2962
2963 continue;
2964 }
2965
2966 while ((de = readdir(d))) {
2967 int a, b;
2968
2969 if (ignore_file(de->d_name))
2970 continue;
2971
2972 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2973 continue;
2974
2975 if (strlen(de->d_name) < 4)
2976 continue;
2977
2978 a = undecchar(de->d_name[1]);
2979 b = undecchar(de->d_name[2]);
2980
2981 if (a < 0 || b < 0)
2982 continue;
2983
2984 free(fpath);
2985 fpath = NULL;
2986 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2987 r = -ENOMEM;
2988 goto finish;
2989 }
2990
2991 if (access(fpath, X_OK) < 0) {
2992
2993 if (errno != ENOENT)
2994 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2995
2996 continue;
2997 }
2998
2999 free(name);
3000 if (!(name = sysv_translate_name(de->d_name + 3))) {
3001 r = -ENOMEM;
3002 goto finish;
3003 }
3004
3005 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3006 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3007 continue;
3008 }
3009
3010 if (de->d_name[0] == 'S') {
3011
3012 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3013 SERVICE(service)->sysv_start_priority =
3014 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
3015
3016 SERVICE(service)->sysv_enabled = true;
3017 }
3018
3019 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3020 goto finish;
3021
3022 if ((r = set_put(runlevel_services[i], service)) < 0)
3023 goto finish;
3024
3025 } else if (de->d_name[0] == 'K' &&
3026 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3027 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3028
3029 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3030 goto finish;
3031
3032 if ((r = set_put(shutdown_services, service)) < 0)
3033 goto finish;
3034 }
3035 }
3036 }
3037
3038 /* Now we loaded all stubs and are aware of the lowest
3039 start-up priority for all services, not let's actually load
3040 the services, this will also tell us which services are
3041 actually native now */
3042 manager_dispatch_load_queue(m);
3043
3044 /* If this is a native service, rely on native ways to pull in
3045 * a service, don't pull it in via sysv rcN.d links. */
3046 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3047 SET_FOREACH(service, runlevel_services[i], j) {
3048 service = unit_follow_merge(service);
3049
3050 if (service->meta.fragment_path)
3051 continue;
3052
3053 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3054 goto finish;
3055 }
3056
3057 /* We honour K links only for halt/reboot. For the normal
3058 * runlevels we assume the stop jobs will be implicitly added
3059 * by the core logic. Also, we don't really distinguish here
3060 * between the runlevels 0 and 6 and just add them to the
3061 * special shutdown target. On SUSE the boot.d/ runlevel is
3062 * also used for shutdown, so we add links for that too to the
3063 * shutdown target.*/
3064 SET_FOREACH(service, shutdown_services, j) {
3065 service = unit_follow_merge(service);
3066
3067 if (service->meta.fragment_path)
3068 continue;
3069
3070 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3071 goto finish;
3072 }
3073
3074 r = 0;
3075
3076finish:
3077 free(path);
3078 free(fpath);
3079 free(name);
3080
3081 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3082 set_free(runlevel_services[i]);
3083 set_free(shutdown_services);
3084
3085 if (d)
3086 closedir(d);
3087
3088 return r;
3089}
3090#endif
3091
3092static void service_bus_name_owner_change(
3093 Unit *u,
3094 const char *name,
3095 const char *old_owner,
3096 const char *new_owner) {
3097
3098 Service *s = SERVICE(u);
3099
3100 assert(s);
3101 assert(name);
3102
3103 assert(streq(s->bus_name, name));
3104 assert(old_owner || new_owner);
3105
3106 if (old_owner && new_owner)
3107 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
3108 else if (old_owner)
3109 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
3110 else
3111 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
3112
3113 s->bus_name_good = !!new_owner;
3114
3115 if (s->type == SERVICE_DBUS) {
3116
3117 /* service_enter_running() will figure out what to
3118 * do */
3119 if (s->state == SERVICE_RUNNING)
3120 service_enter_running(s, true);
3121 else if (s->state == SERVICE_START && new_owner)
3122 service_enter_start_post(s);
3123
3124 } else if (new_owner &&
3125 s->main_pid <= 0 &&
3126 (s->state == SERVICE_START ||
3127 s->state == SERVICE_START_POST ||
3128 s->state == SERVICE_RUNNING ||
3129 s->state == SERVICE_RELOAD)) {
3130
3131 /* Try to acquire PID from bus service */
3132 log_debug("Trying to acquire PID from D-Bus name...");
3133
3134 bus_query_pid(u->meta.manager, name);
3135 }
3136}
3137
3138static void service_bus_query_pid_done(
3139 Unit *u,
3140 const char *name,
3141 pid_t pid) {
3142
3143 Service *s = SERVICE(u);
3144
3145 assert(s);
3146 assert(name);
3147
3148 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
3149
3150 if (s->main_pid <= 0 &&
3151 (s->state == SERVICE_START ||
3152 s->state == SERVICE_START_POST ||
3153 s->state == SERVICE_RUNNING ||
3154 s->state == SERVICE_RELOAD))
3155 service_set_main_pid(s, pid);
3156}
3157
3158int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3159 assert(s);
3160 assert(fd >= 0);
3161
3162 /* This is called by the socket code when instantiating a new
3163 * service for a stream socket and the socket needs to be
3164 * configured. */
3165
3166 if (s->meta.load_state != UNIT_LOADED)
3167 return -EINVAL;
3168
3169 if (s->socket_fd >= 0)
3170 return -EBUSY;
3171
3172 if (s->state != SERVICE_DEAD)
3173 return -EAGAIN;
3174
3175 s->socket_fd = fd;
3176 s->got_socket_fd = true;
3177 s->accept_socket = sock;
3178
3179 return 0;
3180}
3181
3182static void service_reset_failed(Unit *u) {
3183 Service *s = SERVICE(u);
3184
3185 assert(s);
3186
3187 if (s->state == SERVICE_FAILED)
3188 service_set_state(s, SERVICE_DEAD);
3189
3190 s->failure = false;
3191}
3192
3193static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3194 Service *s = SERVICE(u);
3195 int r = 0;
3196 Set *pid_set = NULL;
3197
3198 assert(s);
3199
3200 if (s->main_pid <= 0 && who == KILL_MAIN) {
3201 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3202 return -EINVAL;
3203 }
3204
3205 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3206 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3207 return -ENOENT;
3208 }
3209
3210 if (s->control_pid > 0)
3211 if (kill(mode == KILL_PROCESS_GROUP ? -s->control_pid : s->control_pid, signo) < 0)
3212 r = -errno;
3213
3214 if (s->main_pid > 0)
3215 if (kill(mode == KILL_PROCESS_GROUP ? -s->main_pid : s->main_pid, signo) < 0)
3216 r = -errno;
3217
3218 if (mode == KILL_CONTROL_GROUP) {
3219 int q;
3220
3221 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3222 return -ENOMEM;
3223
3224 /* Exclude the control/main pid from being killed via the cgroup */
3225 if (s->control_pid > 0)
3226 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3227 r = q;
3228 goto finish;
3229 }
3230
3231 if (s->main_pid > 0)
3232 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3233 r = q;
3234 goto finish;
3235 }
3236
3237 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, false, pid_set)) < 0)
3238 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
3239 r = q;
3240 }
3241
3242finish:
3243 if (pid_set)
3244 set_free(pid_set);
3245
3246 return r;
3247}
3248
3249static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3250 [SERVICE_DEAD] = "dead",
3251 [SERVICE_START_PRE] = "start-pre",
3252 [SERVICE_START] = "start",
3253 [SERVICE_START_POST] = "start-post",
3254 [SERVICE_RUNNING] = "running",
3255 [SERVICE_EXITED] = "exited",
3256 [SERVICE_RELOAD] = "reload",
3257 [SERVICE_STOP] = "stop",
3258 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3259 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3260 [SERVICE_STOP_POST] = "stop-post",
3261 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3262 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3263 [SERVICE_FAILED] = "failed",
3264 [SERVICE_AUTO_RESTART] = "auto-restart",
3265};
3266
3267DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3268
3269static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3270 [SERVICE_RESTART_NO] = "no",
3271 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3272 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3273 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3274 [SERVICE_RESTART_ALWAYS] = "always"
3275};
3276
3277DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3278
3279static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3280 [SERVICE_SIMPLE] = "simple",
3281 [SERVICE_FORKING] = "forking",
3282 [SERVICE_ONESHOT] = "oneshot",
3283 [SERVICE_DBUS] = "dbus",
3284 [SERVICE_NOTIFY] = "notify"
3285};
3286
3287DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3288
3289static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3290 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3291 [SERVICE_EXEC_START] = "ExecStart",
3292 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3293 [SERVICE_EXEC_RELOAD] = "ExecReload",
3294 [SERVICE_EXEC_STOP] = "ExecStop",
3295 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3296};
3297
3298DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3299
3300static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3301 [NOTIFY_NONE] = "none",
3302 [NOTIFY_MAIN] = "main",
3303 [NOTIFY_ALL] = "all"
3304};
3305
3306DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3307
3308const UnitVTable service_vtable = {
3309 .suffix = ".service",
3310 .show_status = true,
3311
3312 .init = service_init,
3313 .done = service_done,
3314 .load = service_load,
3315
3316 .coldplug = service_coldplug,
3317
3318 .dump = service_dump,
3319
3320 .start = service_start,
3321 .stop = service_stop,
3322 .reload = service_reload,
3323
3324 .can_reload = service_can_reload,
3325
3326 .kill = service_kill,
3327
3328 .serialize = service_serialize,
3329 .deserialize_item = service_deserialize_item,
3330
3331 .active_state = service_active_state,
3332 .sub_state_to_string = service_sub_state_to_string,
3333
3334 .check_gc = service_check_gc,
3335 .check_snapshot = service_check_snapshot,
3336
3337 .sigchld_event = service_sigchld_event,
3338 .timer_event = service_timer_event,
3339
3340 .reset_failed = service_reset_failed,
3341
3342 .cgroup_notify_empty = service_cgroup_notify_event,
3343 .notify_message = service_notify_message,
3344
3345 .bus_name_owner_change = service_bus_name_owner_change,
3346 .bus_query_pid_done = service_bus_query_pid_done,
3347
3348 .bus_interface = "org.freedesktop.systemd1.Service",
3349 .bus_message_handler = bus_service_message_handler,
3350 .bus_invalidating_properties = bus_service_invalidating_properties,
3351
3352#ifdef HAVE_SYSV_COMPAT
3353 .enumerate = service_enumerate
3354#endif
3355};
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