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service: translate 'httpd' LSB Provides into '$httpd' on Fedora
[thirdparty/systemd.git] / src / service.c
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d6c9574f 1/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
5cb5a6ff 2
a7334b09
LP		 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
5cb5a6ff 22#include <errno.h>
034c6ed7 23#include <signal.h>
2c4104f0
LP		 24#include <dirent.h>
25#include <unistd.h>
5cb5a6ff 26
87f0e418 27#include "unit.h"
5cb5a6ff
LP		 28#include "service.h"
29#include "load-fragment.h"
30#include "load-dropin.h"
034c6ed7 31#include "log.h"
2c4104f0 32#include "strv.h"
9e2f7c11 33#include "unit-name.h"
4139c1b2 34#include "dbus-service.h"
514f4ef5 35#include "special.h"
398ef8ba 36#include "bus-errors.h"
2c4104f0
LP		 37
38#define COMMENTS "#;\n"
39#define NEWLINES "\n\r"
034c6ed7 40
09cd1ab1
LP		 41typedef enum RunlevelType {
42 RUNLEVEL_UP,
43 RUNLEVEL_DOWN,
fc5df99e 44 RUNLEVEL_SYSINIT
09cd1ab1
LP		 45} RunlevelType;
46
47static const struct {
48 const char *path;
49 const char *target;
50 const RunlevelType type;
51} rcnd_table[] = {
9d25f5ed 52 /* Standard SysV runlevels for start-up */
514f4ef5 53 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
fbe9f3a9
LP		 54 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
55 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
56 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
57 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
fbe9f3a9 58
d4054675 59#ifdef TARGET_SUSE
cfe243e3 60 /* SUSE style boot.d */
fc5df99e 61 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
d4054675 62#endif
fbe9f3a9 63
d4054675 64#ifdef TARGET_DEBIAN
fbe9f3a9 65 /* Debian style rcS.d */
fc5df99e 66 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
d4054675 67#endif
9d25f5ed
LP		 68
69 /* Standard SysV runlevels for shutdown */
70 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
71 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
72
73 /* Note that the order here matters, as we read the
74 directories in this order, and we want to make sure that
75 sysv_start_priority is known when we first load the
76 unit. And that value we only know from S links. Hence
77 UP/SYSINIT must be read before DOWN */
23a177ef
LP		 78};
79
09cd1ab1 80#define RUNLEVELS_UP "12345"
fbe9f3a9
LP		 81/* #define RUNLEVELS_DOWN "06" */
82/* #define RUNLEVELS_BOOT "bBsS" */
09cd1ab1 83
acbb0225 84static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
87f0e418
LP		 85 [SERVICE_DEAD] = UNIT_INACTIVE,
86 [SERVICE_START_PRE] = UNIT_ACTIVATING,
87 [SERVICE_START] = UNIT_ACTIVATING,
88 [SERVICE_START_POST] = UNIT_ACTIVATING,
89 [SERVICE_RUNNING] = UNIT_ACTIVE,
80876c20 90 [SERVICE_EXITED] = UNIT_ACTIVE,
032ff4af 91 [SERVICE_RELOAD] = UNIT_RELOADING,
87f0e418
LP		 92 [SERVICE_STOP] = UNIT_DEACTIVATING,
93 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
94 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
95 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
96 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
97 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
fdf20a31 98 [SERVICE_FAILED] = UNIT_FAILED,
6124958c 99 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
034c6ed7 100};
5cb5a6ff 101
a16e1123
LP		 102static void service_init(Unit *u) {
103 Service *s = SERVICE(u);
104
105 assert(u);
106 assert(u->meta.load_state == UNIT_STUB);
107
108 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
109 s->restart_usec = DEFAULT_RESTART_USEC;
110 s->timer_watch.type = WATCH_INVALID;
111 s->sysv_start_priority = -1;
112 s->socket_fd = -1;
113
114 exec_context_init(&s->exec_context);
115
116 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
117
118 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
119}
120
5e94833f
LP		 121static void service_unwatch_control_pid(Service *s) {
122 assert(s);
123
124 if (s->control_pid <= 0)
125 return;
126
127 unit_unwatch_pid(UNIT(s), s->control_pid);
128 s->control_pid = 0;
129}
130
131static void service_unwatch_main_pid(Service *s) {
132 assert(s);
133
134 if (s->main_pid <= 0)
135 return;
136
137 unit_unwatch_pid(UNIT(s), s->main_pid);
138 s->main_pid = 0;
139}
140
5925dd3c 141static int service_set_main_pid(Service *s, pid_t pid) {
e55224ca
LP		 142 pid_t ppid;
143
5925dd3c
LP		 144 assert(s);
145
146 if (pid <= 1)
147 return -EINVAL;
148
149 if (pid == getpid())
150 return -EINVAL;
151
e55224ca
LP		 152 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid())
153 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
154 s->meta.id, (unsigned long) pid);
155
5925dd3c
LP		 156 s->main_pid = pid;
157 s->main_pid_known = true;
158
b58b4116
LP		 159 exec_status_start(&s->main_exec_status, pid);
160
5925dd3c
LP		 161 return 0;
162}
163
4f2d528d
LP		 164static void service_close_socket_fd(Service *s) {
165 assert(s);
166
167 if (s->socket_fd < 0)
168 return;
169
170 close_nointr_nofail(s->socket_fd);
171 s->socket_fd = -1;
172}
173
6cf6bbc2
LP		 174static void service_connection_unref(Service *s) {
175 assert(s);
176
177 if (!s->socket)
178 return;
179
180 socket_connection_unref(s->socket);
181 s->socket = NULL;
182}
183
87f0e418
LP		 184static void service_done(Unit *u) {
185 Service *s = SERVICE(u);
44d8db9e
LP		 186
187 assert(s);
188
189 free(s->pid_file);
190 s->pid_file = NULL;
191
2c4104f0
LP		 192 free(s->sysv_path);
193 s->sysv_path = NULL;
194
8309400a
LP		 195 free(s->sysv_runlevels);
196 s->sysv_runlevels = NULL;
197
8c47c732
LP		 198 free(s->status_text);
199 s->status_text = NULL;
200
44d8db9e 201 exec_context_done(&s->exec_context);
e537352b 202 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
44d8db9e
LP		 203 s->control_command = NULL;
204
205 /* This will leak a process, but at least no memory or any of
206 * our resources */
5e94833f
LP		 207 service_unwatch_main_pid(s);
208 service_unwatch_control_pid(s);
44d8db9e 209
05e343b7
LP		 210 if (s->bus_name) {
211 unit_unwatch_bus_name(UNIT(u), s->bus_name);
212 free(s->bus_name);
213 s->bus_name = NULL;
214 }
215
4f2d528d 216 service_close_socket_fd(s);
6cf6bbc2 217 service_connection_unref(s);
4f2d528d 218
acbb0225 219 unit_unwatch_timer(u, &s->timer_watch);
44d8db9e
LP		 220}
221
b7ccee3c
LP		 222static char *sysv_translate_name(const char *name) {
223 char *r;
224
225 if (!(r = new(char, strlen(name) + sizeof(".service"))))
226 return NULL;
227
228 if (startswith(name, "boot."))
229 /* Drop SuSE-style boot. prefix */
230 strcpy(stpcpy(r, name + 5), ".service");
231 else if (endswith(name, ".sh"))
232 /* Drop Debian-style .sh suffix */
233 strcpy(stpcpy(r, name) - 3, ".service");
234 else
235 /* Normal init scripts */
236 strcpy(stpcpy(r, name), ".service");
237
238 return r;
239}
240
241static int sysv_translate_facility(const char *name, char **_r) {
2c4104f0
LP		 242
243 static const char * const table[] = {
6464aa08 244 /* LSB defined facilities */
2c4104f0
LP		 245 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
246 "$network", SPECIAL_NETWORK_TARGET,
247 "$named", SPECIAL_NSS_LOOKUP_TARGET,
248 "$portmap", SPECIAL_RPCBIND_TARGET,
249 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
250 "$syslog", SPECIAL_SYSLOG_TARGET,
6464aa08
LP		 251 "$time", SPECIAL_RTC_SET_TARGET,
252
253 /* Debian extensions */
3177a49c 254#ifdef TARGET_DEBIAN
6464aa08 255 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
3177a49c 256#endif
6464aa08 257 "$mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
3177a49c
LP		 258 "$x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
259
260#ifdef TARGET_FEDORA
261 /* Fedora extensions, lacking the $ prefix */
262 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
4f7dcad3
LP		 263 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
264 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
3177a49c 265#endif
2c4104f0
LP		 266 };
267
268 unsigned i;
269 char *r;
270
271 for (i = 0; i < ELEMENTSOF(table); i += 2)
272 if (streq(table[i], name)) {
273 if (!(r = strdup(table[i+1])))
274 return -ENOMEM;
275
276 goto finish;
277 }
278
279 if (*name == '$')
280 return 0;
281
b7ccee3c 282 if (!(r = sysv_translate_name(name)))
2c4104f0
LP		 283 return -ENOMEM;
284
285finish:
286
287 if (_r)
288 *_r = r;
289
290 return 1;
291}
292
56d748b4 293static int sysv_fix_order(Service *s) {
2c4104f0
LP		 294 Meta *other;
295 int r;
296
297 assert(s);
298
299 if (s->sysv_start_priority < 0)
300 return 0;
301
23a177ef
LP		 302 /* For each pair of services where at least one lacks a LSB
303 * header, we use the start priority value to order things. */
2c4104f0 304
4cd1fbcc 305 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
2c4104f0
LP		 306 Service *t;
307 UnitDependency d;
eeaafddc 308 bool special_s, special_t;
2c4104f0
LP		 309
310 t = (Service*) other;
311
312 if (s == t)
313 continue;
314
315 if (t->sysv_start_priority < 0)
316 continue;
317
51a1a79d
LP		 318 /* If both units have modern headers we don't care
319 * about the priorities */
320 if ((!s->sysv_path || s->sysv_has_lsb) &&
321 (!t->sysv_path || t->sysv_has_lsb))
23a177ef
LP		 322 continue;
323
eeaafddc
LP		 324 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
325 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
326
327 if (special_t && !special_s)
328 d = UNIT_AFTER;
329 else if (special_s && !special_t)
330 d = UNIT_BEFORE;
331 else if (t->sysv_start_priority < s->sysv_start_priority)
2c4104f0
LP		 332 d = UNIT_AFTER;
333 else if (t->sysv_start_priority > s->sysv_start_priority)
334 d = UNIT_BEFORE;
335 else
336 continue;
337
338 /* FIXME: Maybe we should compare the name here lexicographically? */
339
701cc384 340 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
2c4104f0
LP		 341 return r;
342 }
343
344 return 0;
345}
346
347static ExecCommand *exec_command_new(const char *path, const char *arg1) {
348 ExecCommand *c;
349
350 if (!(c = new0(ExecCommand, 1)))
351 return NULL;
352
353 if (!(c->path = strdup(path))) {
354 free(c);
355 return NULL;
356 }
357
358 if (!(c->argv = strv_new(path, arg1, NULL))) {
359 free(c->path);
360 free(c);
361 return NULL;
362 }
363
364 return c;
365}
366
367static int sysv_exec_commands(Service *s) {
368 ExecCommand *c;
369
370 assert(s);
371 assert(s->sysv_path);
372
373 if (!(c = exec_command_new(s->sysv_path, "start")))
374 return -ENOMEM;
375 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
376
377 if (!(c = exec_command_new(s->sysv_path, "stop")))
378 return -ENOMEM;
379 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
380
381 if (!(c = exec_command_new(s->sysv_path, "reload")))
382 return -ENOMEM;
383 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
384
385 return 0;
386}
387
e537352b 388static int service_load_sysv_path(Service *s, const char *path) {
2c4104f0
LP		 389 FILE *f;
390 Unit *u;
391 unsigned line = 0;
392 int r;
393 enum {
394 NORMAL,
395 DESCRIPTION,
396 LSB,
397 LSB_DESCRIPTION
398 } state = NORMAL;
23a177ef
LP		 399
400 assert(s);
401 assert(path);
2c4104f0
LP		 402
403 u = UNIT(s);
404
405 if (!(f = fopen(path, "re"))) {
406 r = errno == ENOENT ? 0 : -errno;
407 goto finish;
408 }
409
2c4104f0
LP		 410 free(s->sysv_path);
411 if (!(s->sysv_path = strdup(path))) {
412 r = -ENOMEM;
413 goto finish;
414 }
415
416 while (!feof(f)) {
417 char l[LINE_MAX], *t;
418
419 if (!fgets(l, sizeof(l), f)) {
420 if (feof(f))
421 break;
422
423 r = -errno;
424 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
425 goto finish;
426 }
427
428 line++;
429
430 t = strstrip(l);
431 if (*t != '#')
432 continue;
433
434 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
435 state = LSB;
23a177ef 436 s->sysv_has_lsb = true;
2c4104f0
LP		 437 continue;
438 }
439
440 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
441 state = NORMAL;
442 continue;
443 }
444
445 t++;
446 t += strspn(t, WHITESPACE);
447
448 if (state == NORMAL) {
449
450 /* Try to parse Red Hat style chkconfig headers */
451
c2b35af6 452 if (startswith_no_case(t, "chkconfig:")) {
2c4104f0 453 int start_priority;
8309400a 454 char runlevels[16], *k;
2c4104f0
LP		 455
456 state = NORMAL;
457
8309400a
LP		 458 if (sscanf(t+10, "%15s %i %*i",
459 runlevels,
460 &start_priority) != 2) {
2c4104f0
LP		 461
462 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
463 continue;
464 }
465
fbe9f3a9
LP		 466 /* A start priority gathered from the
467 * symlink farms is preferred over the
468 * data from the LSB header. */
8309400a 469 if (start_priority < 0 || start_priority > 99)
2c4104f0 470 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
db06e3b6 471 else if (s->sysv_start_priority < 0)
8309400a
LP		 472 s->sysv_start_priority = start_priority;
473
474 char_array_0(runlevels);
475 k = delete_chars(runlevels, WHITESPACE "-");
476
477 if (k[0]) {
478 char *d;
479
480 if (!(d = strdup(k))) {
481 r = -ENOMEM;
482 goto finish;
483 }
484
485 free(s->sysv_runlevels);
486 s->sysv_runlevels = d;
2c4104f0
LP		 487 }
488
ed4c1cc6
LP		 489 } else if (startswith_no_case(t, "description:") &&
490 !u->meta.description) {
2c4104f0
LP		 491
492 size_t k = strlen(t);
493 char *d;
494
495 if (t[k-1] == '\\') {
496 state = DESCRIPTION;
497 t[k-1] = 0;
498 }
499
46948365 500 if (!(d = strappend("LSB: ", strstrip(t+12)))) {
2c4104f0
LP		 501 r = -ENOMEM;
502 goto finish;
503 }
504
505 free(u->meta.description);
506 u->meta.description = d;
507
c2b35af6 508 } else if (startswith_no_case(t, "pidfile:")) {
2c4104f0
LP		 509
510 char *fn;
511
512 state = NORMAL;
513
514 fn = strstrip(t+8);
515 if (!path_is_absolute(fn)) {
516 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
517 continue;
518 }
519
520 if (!(fn = strdup(fn))) {
521 r = -ENOMEM;
522 goto finish;
523 }
524
525 free(s->pid_file);
526 s->pid_file = fn;
527 }
528
529 } else if (state == DESCRIPTION) {
530
531 /* Try to parse Red Hat style description
532 * continuation */
533
534 size_t k = strlen(t);
535 char *d;
536
537 if (t[k-1] == '\\')
538 t[k-1] = 0;
539 else
540 state = NORMAL;
541
542 assert(u->meta.description);
543 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
544 r = -ENOMEM;
545 goto finish;
546 }
547
548 free(u->meta.description);
549 u->meta.description = d;
550
551 } else if (state == LSB || state == LSB_DESCRIPTION) {
552
c2b35af6 553 if (startswith_no_case(t, "Provides:")) {
2c4104f0
LP		 554 char *i, *w;
555 size_t z;
556
557 state = LSB;
558
f60f22df 559 FOREACH_WORD_QUOTED(w, z, t+9, i) {
2c4104f0
LP		 560 char *n, *m;
561
562 if (!(n = strndup(w, z))) {
563 r = -ENOMEM;
564 goto finish;
565 }
566
b7ccee3c 567 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 568 free(n);
569
570 if (r < 0)
571 goto finish;
572
573 if (r == 0)
574 continue;
575
bd77d0fc
LP		 576 if (unit_name_to_type(m) == UNIT_SERVICE)
577 r = unit_add_name(u, m);
c68364b7
LP		 578 else {
579 r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
580
581 if (s->sysv_enabled) {
582 int k;
583
584 if ((k = unit_add_dependency_by_name_inverse(u, UNIT_WANTS, m, NULL, true)) < 0)
585 r = k;
586 }
587 }
bd77d0fc 588
2c4104f0 589 if (r < 0)
43a37549 590 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
42a097a2
LP		 591
592 free(m);
2c4104f0
LP		 593 }
594
c2b35af6
LP		 595 } else if (startswith_no_case(t, "Required-Start:") ||
596 startswith_no_case(t, "Should-Start:") ||
597 startswith_no_case(t, "X-Start-Before:") ||
598 startswith_no_case(t, "X-Start-After:")) {
2c4104f0
LP		 599 char *i, *w;
600 size_t z;
601
602 state = LSB;
603
f60f22df 604 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
2c4104f0
LP		 605 char *n, *m;
606
607 if (!(n = strndup(w, z))) {
608 r = -ENOMEM;
609 goto finish;
610 }
611
b7ccee3c 612 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 613 free(n);
614
615 if (r < 0)
616 goto finish;
617
618 if (r == 0)
619 continue;
620
c2b35af6 621 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
2c4104f0
LP		 622
623 if (r < 0)
43a37549 624 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
42a097a2
LP		 625
626 free(m);
2c4104f0 627 }
c2b35af6 628 } else if (startswith_no_case(t, "Default-Start:")) {
8309400a
LP		 629 char *k, *d;
630
631 state = LSB;
632
633 k = delete_chars(t+14, WHITESPACE "-");
634
635 if (k[0] != 0) {
636 if (!(d = strdup(k))) {
637 r = -ENOMEM;
638 goto finish;
639 }
640
641 free(s->sysv_runlevels);
642 s->sysv_runlevels = d;
643 }
2c4104f0 644
ed4c1cc6
LP		 645 } else if (startswith_no_case(t, "Description:") &&
646 !u->meta.description) {
2c4104f0
LP		 647 char *d;
648
ed4c1cc6
LP		 649 /* We use the long description only if
650 * no short description is set. */
651
2c4104f0
LP		 652 state = LSB_DESCRIPTION;
653
46948365 654 if (!(d = strappend("LSB: ", strstrip(t+12)))) {
2c4104f0
LP		 655 r = -ENOMEM;
656 goto finish;
657 }
658
659 free(u->meta.description);
660 u->meta.description = d;
661
ed4c1cc6 662 } else if (startswith_no_case(t, "Short-Description:")) {
2c4104f0
LP		 663 char *d;
664
2c4104f0
LP		 665 state = LSB;
666
46948365 667 if (!(d = strappend("LSB: ", strstrip(t+18)))) {
2c4104f0
LP		 668 r = -ENOMEM;
669 goto finish;
670 }
671
7740296d 672 free(u->meta.description);
2c4104f0
LP		 673 u->meta.description = d;
674
723c83fd
LP		 675 } else if (startswith_no_case(t, "X-Interactive:")) {
676 int b;
677
678 if ((b = parse_boolean(strstrip(t+14))) < 0) {
679 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
680 continue;
681 }
682
683 if (b)
684 s->exec_context.std_input = EXEC_INPUT_TTY;
685 else
686 s->exec_context.std_input = EXEC_INPUT_NULL;
687
2c4104f0
LP		 688 } else if (state == LSB_DESCRIPTION) {
689
690 if (startswith(l, "#\t") || startswith(l, "# ")) {
691 char *d;
692
693 assert(u->meta.description);
694 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
695 r = -ENOMEM;
696 goto finish;
697 }
698
699 free(u->meta.description);
700 u->meta.description = d;
701 } else
702 state = LSB;
703 }
704 }
705 }
706
2c4104f0
LP		 707 if ((r = sysv_exec_commands(s)) < 0)
708 goto finish;
709
a40eb732 710 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
0bc824be
LP		 711 /* If there a runlevels configured for this service
712 * but none of the standard ones, then we assume this
713 * is some special kind of service (which might be
714 * needed for early boot) and don't create any links
715 * to it. */
716
a40eb732 717 s->meta.default_dependencies = false;
09cd1ab1 718
09cd1ab1
LP		 719 /* Don't timeout special services during boot (like fsck) */
720 s->timeout_usec = 0;
a40eb732 721 }
0fd030be 722
80876c20 723 /* Special setting for all SysV services */
1f48cf56 724 s->type = SERVICE_FORKING;
02ee865a 725 s->remain_after_exit = true;
1f48cf56 726 s->restart = SERVICE_ONCE;
8a2b3c09
LP		 727 s->exec_context.std_output =
728 (s->meta.manager->sysv_console || s->exec_context.std_input == EXEC_INPUT_TTY)
729 ? EXEC_OUTPUT_TTY : EXEC_OUTPUT_NULL;
2e22afe9 730 s->exec_context.kill_mode = KILL_PROCESS_GROUP;
80876c20 731
e537352b 732 u->meta.load_state = UNIT_LOADED;
23a177ef 733 r = 0;
2c4104f0
LP		 734
735finish:
736
737 if (f)
738 fclose(f);
739
740 return r;
741}
742
e537352b 743static int service_load_sysv_name(Service *s, const char *name) {
2c4104f0
LP		 744 char **p;
745
746 assert(s);
747 assert(name);
748
d017c6ca
LP		 749 /* For SysV services we strip the boot. or .sh
750 * prefixes/suffixes. */
751 if (startswith(name, "boot.") ||
752 endswith(name, ".sh.service"))
753 return -ENOENT;
754
4cd1fbcc 755 STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
2c4104f0
LP		 756 char *path;
757 int r;
758
759 if (asprintf(&path, "%s/%s", *p, name) < 0)
760 return -ENOMEM;
761
762 assert(endswith(path, ".service"));
763 path[strlen(path)-8] = 0;
764
e537352b 765 r = service_load_sysv_path(s, path);
fbe9f3a9 766
4cd1fbcc 767 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
d017c6ca 768 /* Try Debian style xxx.sh source'able init scripts */
fbe9f3a9
LP		 769 strcat(path, ".sh");
770 r = service_load_sysv_path(s, path);
771 }
772
2c4104f0
LP		 773 free(path);
774
4cd1fbcc 775 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
cfe243e3 776 /* Try SUSE style boot.xxx init scripts */
fbe9f3a9
LP		 777
778 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
779 return -ENOMEM;
780
781 path[strlen(path)-8] = 0;
782 r = service_load_sysv_path(s, path);
783 free(path);
784 }
785
23a177ef 786 if (r < 0)
2c4104f0 787 return r;
23a177ef 788
4cd1fbcc 789 if ((s->meta.load_state != UNIT_STUB))
23a177ef 790 break;
2c4104f0
LP		 791 }
792
793 return 0;
794}
795
e537352b 796static int service_load_sysv(Service *s) {
2c4104f0
LP		 797 const char *t;
798 Iterator i;
799 int r;
800
5cb5a6ff
LP		 801 assert(s);
802
803 /* Load service data from SysV init scripts, preferably with
804 * LSB headers ... */
805
4cd1fbcc 806 if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
2c4104f0
LP		 807 return 0;
808
4cd1fbcc 809 if ((t = s->meta.id))
e537352b 810 if ((r = service_load_sysv_name(s, t)) < 0)
2c4104f0
LP		 811 return r;
812
4cd1fbcc
LP		 813 if (s->meta.load_state == UNIT_STUB)
814 SET_FOREACH(t, s->meta.names, i) {
815 if (t == s->meta.id)
e537352b
LP		 816 continue;
817
e364ad06 818 if ((r = service_load_sysv_name(s, t)) < 0)
23a177ef
LP		 819 return r;
820
4cd1fbcc 821 if (s->meta.load_state != UNIT_STUB)
23a177ef
LP		 822 break;
823 }
2c4104f0
LP		 824
825 return 0;
5cb5a6ff
LP		 826}
827
243b1432
LP		 828static int service_verify(Service *s) {
829 assert(s);
830
4cd1fbcc 831 if (s->meta.load_state != UNIT_LOADED)
243b1432
LP		 832 return 0;
833
834 if (!s->exec_command[SERVICE_EXEC_START]) {
4cd1fbcc 835 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
243b1432
LP		 836 return -EINVAL;
837 }
838
34e9ba66
LP		 839 if (s->type != SERVICE_ONESHOT &&
840 s->exec_command[SERVICE_EXEC_START]->command_next) {
841 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id);
6cf6bbc2
LP		 842 return -EINVAL;
843 }
844
05e343b7 845 if (s->type == SERVICE_DBUS && !s->bus_name) {
4d0e5dbd
LP		 846 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
847 return -EINVAL;
848 }
849
2e22afe9 850 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
4d0e5dbd 851 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
05e343b7
LP		 852 return -EINVAL;
853 }
854
243b1432
LP		 855 return 0;
856}
857
a40eb732
LP		 858static int service_add_default_dependencies(Service *s) {
859 int r;
860
861 assert(s);
862
863 /* Add a number of automatic dependencies useful for the
864 * majority of services. */
865
866 /* First, pull in base system */
867 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
868
869 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
870 return r;
871
872 } else if (s->meta.manager->running_as == MANAGER_SESSION) {
873
874 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
875 return r;
876 }
877
878 /* Second, activate normal shutdown */
69dd2852 879 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTED_BY, SPECIAL_SHUTDOWN_TARGET, NULL, true);
a40eb732
LP		 880}
881
e537352b
LP		 882static int service_load(Unit *u) {
883 int r;
884 Service *s = SERVICE(u);
885
886 assert(s);
1e2e8133 887
5cb5a6ff 888 /* Load a .service file */
e537352b 889 if ((r = unit_load_fragment(u)) < 0)
5cb5a6ff
LP		 890 return r;
891
bd77d0fc 892 /* Load a classic init script as a fallback, if we couldn't find anything */
e537352b
LP		 893 if (u->meta.load_state == UNIT_STUB)
894 if ((r = service_load_sysv(s)) < 0)
23a177ef 895 return r;
d46de8a1 896
23a177ef 897 /* Still nothing found? Then let's give up */
e537352b 898 if (u->meta.load_state == UNIT_STUB)
23a177ef 899 return -ENOENT;
034c6ed7 900
23a177ef
LP		 901 /* We were able to load something, then let's add in the
902 * dropin directories. */
903 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 904 return r;
23a177ef
LP		 905
906 /* This is a new unit? Then let's add in some extras */
e537352b 907 if (u->meta.load_state == UNIT_LOADED) {
23a177ef
LP		 908 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
909 return r;
910
911 if ((r = unit_add_default_cgroup(u)) < 0)
912 return r;
913
56d748b4 914 if ((r = sysv_fix_order(s)) < 0)
23a177ef 915 return r;
05e343b7 916
ee0dd802 917 if (s->bus_name)
05e343b7 918 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
a40eb732 919 return r;
c952c6ec
LP		 920
921 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
922 s->notify_access = NOTIFY_MAIN;
a40eb732
LP		 923
924 if (s->type == SERVICE_DBUS || s->bus_name)
925 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_TARGET, NULL, true)) < 0)
926 return r;
927
928 if (s->meta.default_dependencies)
929 if ((r = service_add_default_dependencies(s)) < 0)
930 return r;
8e274523
LP		 931 }
932
243b1432 933 return service_verify(s);
034c6ed7
LP		 934}
935
87f0e418 936static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 937
5cb5a6ff 938 ServiceExecCommand c;
87f0e418 939 Service *s = SERVICE(u);
47be870b
LP		 940 const char *prefix2;
941 char *p2;
5cb5a6ff
LP		 942
943 assert(s);
944
47be870b
LP		 945 p2 = strappend(prefix, "\t");
946 prefix2 = p2 ? p2 : prefix;
44d8db9e 947
5cb5a6ff 948 fprintf(f,
81a2b7ce
LP		 949 "%sService State: %s\n"
950 "%sPermissionsStartOnly: %s\n"
8e274523 951 "%sRootDirectoryStartOnly: %s\n"
02ee865a 952 "%sRemainAfterExit: %s\n"
c952c6ec 953 "%sType: %s\n"
2cf3143a 954 "%sRestart: %s\n"
c952c6ec 955 "%sNotifyAccess: %s\n",
81a2b7ce
LP		 956 prefix, service_state_to_string(s->state),
957 prefix, yes_no(s->permissions_start_only),
8e274523 958 prefix, yes_no(s->root_directory_start_only),
02ee865a 959 prefix, yes_no(s->remain_after_exit),
c952c6ec 960 prefix, service_type_to_string(s->type),
2cf3143a 961 prefix, service_restart_to_string(s->restart),
c952c6ec 962 prefix, notify_access_to_string(s->notify_access));
5cb5a6ff 963
70123e68
LP		 964 if (s->control_pid > 0)
965 fprintf(f,
bb00e604
LP		 966 "%sControl PID: %lu\n",
967 prefix, (unsigned long) s->control_pid);
70123e68
LP		 968
969 if (s->main_pid > 0)
970 fprintf(f,
bb00e604
LP		 971 "%sMain PID: %lu\n",
972 prefix, (unsigned long) s->main_pid);
70123e68 973
034c6ed7
LP		 974 if (s->pid_file)
975 fprintf(f,
976 "%sPIDFile: %s\n",
977 prefix, s->pid_file);
978
05e343b7
LP		 979 if (s->bus_name)
980 fprintf(f,
981 "%sBusName: %s\n"
982 "%sBus Name Good: %s\n",
983 prefix, s->bus_name,
984 prefix, yes_no(s->bus_name_good));
985
5cb5a6ff
LP		 986 exec_context_dump(&s->exec_context, f, prefix);
987
e537352b 988 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
5cb5a6ff 989
44d8db9e
LP		 990 if (!s->exec_command[c])
991 continue;
992
40d50879 993 fprintf(f, "%s-> %s:\n",
94f04347 994 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 995
996 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 997 }
44d8db9e 998
2c4104f0
LP		 999 if (s->sysv_path)
1000 fprintf(f,
23a177ef
LP		 1001 "%sSysV Init Script Path: %s\n"
1002 "%sSysV Init Script has LSB Header: %s\n",
1003 prefix, s->sysv_path,
1004 prefix, yes_no(s->sysv_has_lsb));
2c4104f0
LP		 1005
1006 if (s->sysv_start_priority >= 0)
1007 fprintf(f,
5de6b302
LP		 1008 "%sSysVStartPriority: %i\n"
1009 "%sSysVEnabled: %s\n",
1010 prefix, s->sysv_start_priority,
1011 prefix, yes_no(s->sysv_enabled));
2c4104f0 1012
8309400a
LP		 1013 if (s->sysv_runlevels)
1014 fprintf(f, "%sSysVRunLevels: %s\n",
1015 prefix, s->sysv_runlevels);
23a177ef 1016
8c47c732
LP		 1017 if (s->status_text)
1018 fprintf(f, "%sStatus Text: %s\n",
1019 prefix, s->status_text);
1020
47be870b 1021 free(p2);
5cb5a6ff
LP		 1022}
1023
034c6ed7
LP		 1024static int service_load_pid_file(Service *s) {
1025 char *k;
034c6ed7 1026 int r;
5925dd3c 1027 pid_t pid;
034c6ed7
LP		 1028
1029 assert(s);
1030
1031 if (s->main_pid_known)
1032 return 0;
1033
5e94833f
LP		 1034 assert(s->main_pid <= 0);
1035
034c6ed7
LP		 1036 if (!s->pid_file)
1037 return -ENOENT;
1038
1039 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
1040 return r;
1041
5925dd3c
LP		 1042 r = parse_pid(k, &pid);
1043 free(k);
034c6ed7 1044
5925dd3c
LP		 1045 if (r < 0)
1046 return r;
406eaf93 1047
5925dd3c
LP		 1048 if (kill(pid, 0) < 0 && errno != EPERM) {
1049 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1050 (unsigned long) pid, s->pid_file);
b8c597d5
LP		 1051 return -ESRCH;
1052 }
1053
5925dd3c 1054 if ((r = service_set_main_pid(s, pid)) < 0)
16f6025e
LP		 1055 return r;
1056
5925dd3c
LP		 1057 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1058 /* FIXME: we need to do something here */
1059 return r;
034c6ed7
LP		 1060
1061 return 0;
1062}
1063
3e33402a
LP		 1064static int service_get_sockets(Service *s, Set **_set) {
1065 Set *set;
ceee3d82
LP		 1066 Iterator i;
1067 char *t;
3e33402a 1068 int r;
ceee3d82
LP		 1069
1070 assert(s);
3e33402a
LP		 1071 assert(_set);
1072
6cf6bbc2
LP		 1073 if (s->socket_fd >= 0)
1074 return 0;
1075
3e33402a
LP		 1076 /* Collects all Socket objects that belong to this
1077 * service. Note that a service might have multiple sockets
1078 * via multiple names. */
1079
1080 if (!(set = set_new(NULL, NULL)))
1081 return -ENOMEM;
ceee3d82 1082
4cd1fbcc 1083 SET_FOREACH(t, s->meta.names, i) {
ceee3d82
LP		 1084 char *k;
1085 Unit *p;
1086
1087 /* Look for all socket objects that go by any of our
1088 * units and collect their fds */
1089
3e33402a
LP		 1090 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1091 r = -ENOMEM;
1092 goto fail;
1093 }
ceee3d82 1094
4cd1fbcc 1095 p = manager_get_unit(s->meta.manager, k);
ceee3d82
LP		 1096 free(k);
1097
8d567588
LP		 1098 if (!p)
1099 continue;
ceee3d82 1100
3e33402a
LP		 1101 if ((r = set_put(set, p)) < 0)
1102 goto fail;
ceee3d82
LP		 1103 }
1104
3e33402a
LP		 1105 *_set = set;
1106 return 0;
1107
1108fail:
1109 set_free(set);
1110 return r;
1111}
1112
e537352b 1113static int service_notify_sockets_dead(Service *s) {
3e33402a
LP		 1114 Iterator i;
1115 Set *set;
47be870b 1116 Socket *sock;
3e33402a
LP		 1117 int r;
1118
1119 assert(s);
1120
6cf6bbc2
LP		 1121 if (s->socket_fd >= 0)
1122 return 0;
1123
3e33402a 1124 /* Notifies all our sockets when we die */
3e33402a
LP		 1125 if ((r = service_get_sockets(s, &set)) < 0)
1126 return r;
1127
47be870b
LP		 1128 SET_FOREACH(sock, set, i)
1129 socket_notify_service_dead(sock);
3e33402a
LP		 1130
1131 set_free(set);
1132
ceee3d82
LP		 1133 return 0;
1134}
1135
034c6ed7
LP		 1136static void service_set_state(Service *s, ServiceState state) {
1137 ServiceState old_state;
5cb5a6ff
LP		 1138 assert(s);
1139
034c6ed7 1140 old_state = s->state;
5cb5a6ff 1141 s->state = state;
034c6ed7
LP		 1142
1143 if (state != SERVICE_START_PRE &&
1144 state != SERVICE_START &&
1145 state != SERVICE_START_POST &&
1146 state != SERVICE_RELOAD &&
1147 state != SERVICE_STOP &&
1148 state != SERVICE_STOP_SIGTERM &&
1149 state != SERVICE_STOP_SIGKILL &&
1150 state != SERVICE_STOP_POST &&
1151 state != SERVICE_FINAL_SIGTERM &&
1152 state != SERVICE_FINAL_SIGKILL &&
1153 state != SERVICE_AUTO_RESTART)
acbb0225 1154 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1155
7d55e835
LP		 1156 if (state != SERVICE_START &&
1157 state != SERVICE_START_POST &&
034c6ed7
LP		 1158 state != SERVICE_RUNNING &&
1159 state != SERVICE_RELOAD &&
1160 state != SERVICE_STOP &&
1161 state != SERVICE_STOP_SIGTERM &&
1162 state != SERVICE_STOP_SIGKILL)
5e94833f 1163 service_unwatch_main_pid(s);
034c6ed7
LP		 1164
1165 if (state != SERVICE_START_PRE &&
1166 state != SERVICE_START &&
1167 state != SERVICE_START_POST &&
1168 state != SERVICE_RELOAD &&
1169 state != SERVICE_STOP &&
1170 state != SERVICE_STOP_SIGTERM &&
1171 state != SERVICE_STOP_SIGKILL &&
1172 state != SERVICE_STOP_POST &&
1173 state != SERVICE_FINAL_SIGTERM &&
e537352b 1174 state != SERVICE_FINAL_SIGKILL) {
5e94833f 1175 service_unwatch_control_pid(s);
034c6ed7 1176 s->control_command = NULL;
a16e1123 1177 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
e537352b 1178 }
034c6ed7 1179
ceee3d82
LP		 1180 if (state == SERVICE_DEAD ||
1181 state == SERVICE_STOP ||
1182 state == SERVICE_STOP_SIGTERM ||
1183 state == SERVICE_STOP_SIGKILL ||
1184 state == SERVICE_STOP_POST ||
1185 state == SERVICE_FINAL_SIGTERM ||
1186 state == SERVICE_FINAL_SIGKILL ||
fdf20a31 1187 state == SERVICE_FAILED ||
ceee3d82 1188 state == SERVICE_AUTO_RESTART)
e537352b 1189 service_notify_sockets_dead(s);
ceee3d82 1190
4f2d528d
LP		 1191 if (state != SERVICE_START_PRE &&
1192 state != SERVICE_START &&
6cf6bbc2
LP		 1193 state != SERVICE_START_POST &&
1194 state != SERVICE_RUNNING &&
1195 state != SERVICE_RELOAD &&
1196 state != SERVICE_STOP &&
1197 state != SERVICE_STOP_SIGTERM &&
1198 state != SERVICE_STOP_SIGKILL &&
1199 state != SERVICE_STOP_POST &&
1200 state != SERVICE_FINAL_SIGTERM &&
1201 state != SERVICE_FINAL_SIGKILL &&
4cd1fbcc 1202 !(state == SERVICE_DEAD && s->meta.job)) {
4f2d528d 1203 service_close_socket_fd(s);
6cf6bbc2
LP		 1204 service_connection_unref(s);
1205 }
4f2d528d 1206
f6023656
LP		 1207 /* For the inactive states unit_notify() will trim the cgroup,
1208 * but for exit we have to do that ourselves... */
1209 if (state == SERVICE_EXITED)
1210 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1211
e537352b 1212 if (old_state != state)
4cd1fbcc 1213 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 1214
1215 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 1216}
1217
a16e1123
LP		 1218static int service_coldplug(Unit *u) {
1219 Service *s = SERVICE(u);
1220 int r;
1221
1222 assert(s);
1223 assert(s->state == SERVICE_DEAD);
1224
1225 if (s->deserialized_state != s->state) {
1226
1227 if (s->deserialized_state == SERVICE_START_PRE ||
1228 s->deserialized_state == SERVICE_START ||
1229 s->deserialized_state == SERVICE_START_POST ||
1230 s->deserialized_state == SERVICE_RELOAD ||
1231 s->deserialized_state == SERVICE_STOP ||
1232 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1233 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1234 s->deserialized_state == SERVICE_STOP_POST ||
1235 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1236 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
e558336f
LP		 1237 s->deserialized_state == SERVICE_AUTO_RESTART) {
1238
1239 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1240 usec_t k;
1241
1242 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1243
1244 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1245 return r;
1246 }
1247 }
a16e1123
LP		 1248
1249 if ((s->deserialized_state == SERVICE_START &&
1250 (s->type == SERVICE_FORKING ||
8c47c732 1251 s->type == SERVICE_DBUS ||
34e9ba66 1252 s->type == SERVICE_ONESHOT ||
8c47c732 1253 s->type == SERVICE_NOTIFY)) ||
a16e1123
LP		 1254 s->deserialized_state == SERVICE_START_POST ||
1255 s->deserialized_state == SERVICE_RUNNING ||
1256 s->deserialized_state == SERVICE_RELOAD ||
1257 s->deserialized_state == SERVICE_STOP ||
1258 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1259 s->deserialized_state == SERVICE_STOP_SIGKILL)
1260 if (s->main_pid > 0)
1261 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1262 return r;
1263
1264 if (s->deserialized_state == SERVICE_START_PRE ||
1265 s->deserialized_state == SERVICE_START ||
1266 s->deserialized_state == SERVICE_START_POST ||
1267 s->deserialized_state == SERVICE_RELOAD ||
1268 s->deserialized_state == SERVICE_STOP ||
1269 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1270 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1271 s->deserialized_state == SERVICE_STOP_POST ||
1272 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1273 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1274 if (s->control_pid > 0)
1275 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1276 return r;
1277
1278 service_set_state(s, s->deserialized_state);
1279 }
1280
1281 return 0;
1282}
1283
44d8db9e
LP		 1284static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1285 Iterator i;
1286 int r;
1287 int *rfds = NULL;
1288 unsigned rn_fds = 0;
3e33402a 1289 Set *set;
47be870b 1290 Socket *sock;
44d8db9e
LP		 1291
1292 assert(s);
1293 assert(fds);
1294 assert(n_fds);
1295
6cf6bbc2
LP		 1296 if (s->socket_fd >= 0)
1297 return 0;
1298
3e33402a
LP		 1299 if ((r = service_get_sockets(s, &set)) < 0)
1300 return r;
1301
47be870b 1302 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 1303 int *cfds;
1304 unsigned cn_fds;
1305
47be870b 1306 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1307 goto fail;
1308
1309 if (!cfds)
1310 continue;
1311
1312 if (!rfds) {
1313 rfds = cfds;
1314 rn_fds = cn_fds;
1315 } else {
1316 int *t;
1317
1318 if (!(t = new(int, rn_fds+cn_fds))) {
1319 free(cfds);
1320 r = -ENOMEM;
1321 goto fail;
1322 }
1323
1324 memcpy(t, rfds, rn_fds);
1325 memcpy(t+rn_fds, cfds, cn_fds);
1326 free(rfds);
1327 free(cfds);
1328
1329 rfds = t;
1330 rn_fds = rn_fds+cn_fds;
1331 }
1332 }
1333
1334 *fds = rfds;
1335 *n_fds = rn_fds;
3e33402a
LP		 1336
1337 set_free(set);
1338
44d8db9e
LP		 1339 return 0;
1340
1341fail:
3e33402a 1342 set_free(set);
44d8db9e 1343 free(rfds);
3e33402a 1344
44d8db9e
LP		 1345 return r;
1346}
1347
81a2b7ce
LP		 1348static int service_spawn(
1349 Service *s,
1350 ExecCommand *c,
1351 bool timeout,
1352 bool pass_fds,
1353 bool apply_permissions,
1354 bool apply_chroot,
1e3ad081 1355 bool apply_tty_stdin,
c952c6ec 1356 bool set_notify_socket,
81a2b7ce
LP		 1357 pid_t *_pid) {
1358
034c6ed7
LP		 1359 pid_t pid;
1360 int r;
6cf6bbc2 1361 int *fds = NULL, *fdsbuf = NULL;
2105e76a
LP		 1362 unsigned n_fds = 0, n_env = 0;
1363 char **argv = NULL, **final_env = NULL, **our_env = NULL;
034c6ed7
LP		 1364
1365 assert(s);
1366 assert(c);
1367 assert(_pid);
1368
6cf6bbc2
LP		 1369 if (pass_fds ||
1370 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1371 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1372 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1373
4f2d528d
LP		 1374 if (s->socket_fd >= 0) {
1375 fds = &s->socket_fd;
1376 n_fds = 1;
6cf6bbc2
LP		 1377 } else {
1378 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1379 goto fail;
1380
1381 fds = fdsbuf;
1382 }
4f2d528d 1383 }
44d8db9e 1384
e558336f 1385 if (timeout && s->timeout_usec) {
acbb0225 1386 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1387 goto fail;
1388 } else
acbb0225 1389 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1390
9e2f7c11
LP		 1391 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1392 r = -ENOMEM;
1393 goto fail;
1394 }
1395
2105e76a
LP		 1396 if (!(our_env = new0(char*, 3))) {
1397 r = -ENOMEM;
1398 goto fail;
1399 }
c952c6ec 1400
2105e76a
LP		 1401 if (set_notify_socket)
1402 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
c952c6ec
LP		 1403 r = -ENOMEM;
1404 goto fail;
1405 }
1406
2105e76a
LP		 1407 if (s->main_pid > 0)
1408 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
c952c6ec
LP		 1409 r = -ENOMEM;
1410 goto fail;
1411 }
2105e76a
LP		 1412
1413 if (!(final_env = strv_env_merge(2,
1414 s->meta.manager->environment,
1415 our_env,
1416 NULL))) {
1417 r = -ENOMEM;
1418 goto fail;
1419 }
c952c6ec 1420
9e2f7c11
LP		 1421 r = exec_spawn(c,
1422 argv,
1423 &s->exec_context,
1424 fds, n_fds,
2105e76a 1425 final_env,
9e2f7c11
LP		 1426 apply_permissions,
1427 apply_chroot,
1e3ad081 1428 apply_tty_stdin,
4cd1fbcc
LP		 1429 s->meta.manager->confirm_spawn,
1430 s->meta.cgroup_bondings,
9e2f7c11
LP		 1431 &pid);
1432
9e2f7c11 1433 if (r < 0)
034c6ed7
LP		 1434 goto fail;
1435
4f2d528d 1436
87f0e418 1437 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1438 /* FIXME: we need to do something here */
1439 goto fail;
1440
2105e76a
LP		 1441 free(fdsbuf);
1442 strv_free(argv);
1443 strv_free(our_env);
1444 strv_free(final_env);
1445
034c6ed7
LP		 1446 *_pid = pid;
1447
5cb5a6ff 1448 return 0;
034c6ed7
LP		 1449
1450fail:
2105e76a 1451 free(fdsbuf);
c952c6ec 1452 strv_free(argv);
2105e76a
LP		 1453 strv_free(our_env);
1454 strv_free(final_env);
c952c6ec 1455
034c6ed7 1456 if (timeout)
acbb0225 1457 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1458
1459 return r;
1460}
1461
80876c20
LP		 1462static int main_pid_good(Service *s) {
1463 assert(s);
1464
1465 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1466 * don't know */
1467
1468 /* If we know the pid file, then lets just check if it is
1469 * still valid */
1470 if (s->main_pid_known)
1471 return s->main_pid > 0;
1472
1473 /* We don't know the pid */
1474 return -EAGAIN;
1475}
1476
1477static int control_pid_good(Service *s) {
1478 assert(s);
1479
1480 return s->control_pid > 0;
1481}
1482
1483static int cgroup_good(Service *s) {
1484 int r;
1485
1486 assert(s);
1487
4cd1fbcc 1488 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
80876c20
LP		 1489 return r;
1490
1491 return !r;
1492}
1493
034c6ed7
LP		 1494static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1495 int r;
1496 assert(s);
1497
1498 if (!success)
1499 s->failure = true;
1500
1501 if (allow_restart &&
47342320 1502 !s->forbid_restart &&
034c6ed7
LP		 1503 (s->restart == SERVICE_RESTART_ALWAYS ||
1504 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1505
acbb0225 1506 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1507 goto fail;
1508
1509 service_set_state(s, SERVICE_AUTO_RESTART);
1510 } else
fdf20a31 1511 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
034c6ed7 1512
47342320
LP		 1513 s->forbid_restart = false;
1514
034c6ed7
LP		 1515 return;
1516
1517fail:
4cd1fbcc 1518 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1519 service_enter_dead(s, false, false);
1520}
1521
1522static void service_enter_signal(Service *s, ServiceState state, bool success);
1523
1524static void service_enter_stop_post(Service *s, bool success) {
1525 int r;
1526 assert(s);
1527
1528 if (!success)
1529 s->failure = true;
1530
5e94833f
LP		 1531 service_unwatch_control_pid(s);
1532
a16e1123 1533 s->control_command_id = SERVICE_EXEC_STOP_POST;
80876c20 1534 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
81a2b7ce
LP		 1535 if ((r = service_spawn(s,
1536 s->control_command,
1537 true,
1538 false,
1539 !s->permissions_start_only,
1540 !s->root_directory_start_only,
1e3ad081 1541 true,
c952c6ec 1542 false,
81a2b7ce 1543 &s->control_pid)) < 0)
034c6ed7
LP		 1544 goto fail;
1545
d6ea93e3 1546
80876c20
LP		 1547 service_set_state(s, SERVICE_STOP_POST);
1548 } else
1549 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
034c6ed7
LP		 1550
1551 return;
1552
1553fail:
4cd1fbcc 1554 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1555 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1556}
1557
1558static void service_enter_signal(Service *s, ServiceState state, bool success) {
1559 int r;
ca949c9d
LP		 1560 Set *pid_set = NULL;
1561 bool wait_for_exit = false;
034c6ed7
LP		 1562
1563 assert(s);
1564
1565 if (!success)
1566 s->failure = true;
1567
2e22afe9
LP		 1568 if (s->exec_context.kill_mode != KILL_NONE) {
1569 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
034c6ed7 1570
ca949c9d
LP		 1571 if (s->main_pid > 0) {
1572 if (kill(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
1573 -s->main_pid :
1574 s->main_pid, sig) < 0 && errno != ESRCH)
034c6ed7 1575
ca949c9d
LP		 1576 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1577 else
1578 wait_for_exit = true;
034c6ed7
LP		 1579 }
1580
ca949c9d
LP		 1581 if (s->control_pid > 0) {
1582 if (kill(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
1583 -s->control_pid :
1584 s->control_pid, sig) < 0 && errno != ESRCH)
80876c20 1585
ca949c9d
LP		 1586 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1587 else
1588 wait_for_exit = true;
1589 }
50159e6a 1590
ca949c9d 1591 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
50159e6a 1592
ca949c9d
LP		 1593 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1594 r = -ENOMEM;
50159e6a 1595 goto fail;
ca949c9d
LP		 1596 }
1597
1598 /* Exclude the main/control pids from being killed via the cgroup */
1599 if (s->main_pid > 0)
1600 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1601 goto fail;
1602
1603 if (s->control_pid > 0)
1604 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1605 goto fail;
1606
1607 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, pid_set)) < 0) {
1608 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1609 log_warning("Failed to kill control group: %s", strerror(-r));
f5a50114 1610 } else if (r > 0)
ca949c9d
LP		 1611 wait_for_exit = true;
1612
1613 set_free(pid_set);
50159e6a 1614 }
d6ea93e3 1615 }
034c6ed7 1616
ca949c9d 1617 if (wait_for_exit) {
e558336f
LP		 1618 if (s->timeout_usec > 0)
1619 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1620 goto fail;
d6ea93e3 1621
80876c20
LP		 1622 service_set_state(s, state);
1623 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1624 service_enter_stop_post(s, true);
1625 else
034c6ed7
LP		 1626 service_enter_dead(s, true, true);
1627
1628 return;
1629
1630fail:
4cd1fbcc 1631 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
034c6ed7 1632
80876c20 1633 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
034c6ed7
LP		 1634 service_enter_stop_post(s, false);
1635 else
1636 service_enter_dead(s, false, true);
ca949c9d
LP		 1637
1638 if (pid_set)
1639 set_free(pid_set);
034c6ed7
LP		 1640}
1641
1642static void service_enter_stop(Service *s, bool success) {
1643 int r;
5925dd3c 1644
034c6ed7
LP		 1645 assert(s);
1646
1647 if (!success)
1648 s->failure = true;
1649
5e94833f
LP		 1650 service_unwatch_control_pid(s);
1651
a16e1123 1652 s->control_command_id = SERVICE_EXEC_STOP;
80876c20 1653 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
81a2b7ce
LP		 1654 if ((r = service_spawn(s,
1655 s->control_command,
1656 true,
1657 false,
1658 !s->permissions_start_only,
1659 !s->root_directory_start_only,
c952c6ec 1660 false,
1e3ad081 1661 false,
e55224ca 1662 &s->control_pid)) < 0)
034c6ed7
LP		 1663 goto fail;
1664
80876c20
LP		 1665 service_set_state(s, SERVICE_STOP);
1666 } else
034c6ed7
LP		 1667 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1668
1669 return;
1670
1671fail:
4cd1fbcc 1672 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1673 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1674}
1675
80876c20 1676static void service_enter_running(Service *s, bool success) {
4eab639f 1677 int main_pid_ok, cgroup_ok;
80876c20
LP		 1678 assert(s);
1679
1680 if (!success)
1681 s->failure = true;
1682
4eab639f
LP		 1683 main_pid_ok = main_pid_good(s);
1684 cgroup_ok = cgroup_good(s);
1685
1686 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
05e343b7 1687 (s->bus_name_good || s->type != SERVICE_DBUS))
80876c20 1688 service_set_state(s, SERVICE_RUNNING);
02ee865a 1689 else if (s->remain_after_exit)
80876c20
LP		 1690 service_set_state(s, SERVICE_EXITED);
1691 else
1692 service_enter_stop(s, true);
1693}
1694
034c6ed7
LP		 1695static void service_enter_start_post(Service *s) {
1696 int r;
1697 assert(s);
1698
5e94833f
LP		 1699 service_unwatch_control_pid(s);
1700
a16e1123 1701 s->control_command_id = SERVICE_EXEC_START_POST;
80876c20 1702 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
81a2b7ce
LP		 1703 if ((r = service_spawn(s,
1704 s->control_command,
1705 true,
1706 false,
1707 !s->permissions_start_only,
1708 !s->root_directory_start_only,
c952c6ec 1709 false,
1e3ad081 1710 false,
e55224ca 1711 &s->control_pid)) < 0)
034c6ed7
LP		 1712 goto fail;
1713
80876c20
LP		 1714 service_set_state(s, SERVICE_START_POST);
1715 } else
1716 service_enter_running(s, true);
034c6ed7
LP		 1717
1718 return;
1719
1720fail:
4cd1fbcc 1721 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1722 service_enter_stop(s, false);
1723}
1724
1725static void service_enter_start(Service *s) {
1726 pid_t pid;
1727 int r;
1728
1729 assert(s);
1730
1731 assert(s->exec_command[SERVICE_EXEC_START]);
34e9ba66 1732 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
034c6ed7 1733
80876c20
LP		 1734 if (s->type == SERVICE_FORKING)
1735 service_unwatch_control_pid(s);
1736 else
1737 service_unwatch_main_pid(s);
1738
34e9ba66
LP		 1739 s->control_command_id = SERVICE_EXEC_START;
1740 s->control_command = s->exec_command[SERVICE_EXEC_START];
1741
81a2b7ce 1742 if ((r = service_spawn(s,
34e9ba66 1743 s->control_command,
8c47c732 1744 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
81a2b7ce
LP		 1745 true,
1746 true,
1747 true,
1e3ad081 1748 true,
c952c6ec 1749 s->notify_access != NOTIFY_NONE,
81a2b7ce 1750 &pid)) < 0)
034c6ed7
LP		 1751 goto fail;
1752
1753 if (s->type == SERVICE_SIMPLE) {
1754 /* For simple services we immediately start
1755 * the START_POST binaries. */
1756
5925dd3c 1757 service_set_main_pid(s, pid);
034c6ed7
LP		 1758 service_enter_start_post(s);
1759
1760 } else if (s->type == SERVICE_FORKING) {
1761
1762 /* For forking services we wait until the start
1763 * process exited. */
1764
e55224ca 1765 s->control_pid = pid;
80876c20
LP		 1766 service_set_state(s, SERVICE_START);
1767
34e9ba66 1768 } else if (s->type == SERVICE_ONESHOT ||
8c47c732
LP		 1769 s->type == SERVICE_DBUS ||
1770 s->type == SERVICE_NOTIFY) {
7d55e835 1771
34e9ba66 1772 /* For oneshot services we wait until the start
7d55e835
LP		 1773 * process exited, too, but it is our main process. */
1774
05e343b7 1775 /* For D-Bus services we know the main pid right away,
8c47c732
LP		 1776 * but wait for the bus name to appear on the
1777 * bus. Notify services are similar. */
05e343b7 1778
5925dd3c 1779 service_set_main_pid(s, pid);
80876c20 1780 service_set_state(s, SERVICE_START);
034c6ed7
LP		 1781 } else
1782 assert_not_reached("Unknown service type");
1783
1784 return;
1785
1786fail:
4cd1fbcc 1787 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
80876c20 1788 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 1789}
1790
1791static void service_enter_start_pre(Service *s) {
1792 int r;
1793
1794 assert(s);
1795
5e94833f
LP		 1796 service_unwatch_control_pid(s);
1797
a16e1123 1798 s->control_command_id = SERVICE_EXEC_START_PRE;
80876c20 1799 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
81a2b7ce
LP		 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,
1e3ad081 1806 true,
c952c6ec 1807 false,
e55224ca 1808 &s->control_pid)) < 0)
034c6ed7
LP		 1809 goto fail;
1810
80876c20
LP		 1811 service_set_state(s, SERVICE_START_PRE);
1812 } else
034c6ed7
LP		 1813 service_enter_start(s);
1814
1815 return;
1816
1817fail:
4cd1fbcc 1818 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1819 service_enter_dead(s, false, true);
1820}
1821
1822static void service_enter_restart(Service *s) {
1823 int r;
398ef8ba
LP		 1824 DBusError error;
1825
034c6ed7 1826 assert(s);
398ef8ba 1827 dbus_error_init(&error);
034c6ed7 1828
9ea9a0c8
LP		 1829 service_enter_dead(s, true, false);
1830
7b2603e6 1831 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
034c6ed7
LP		 1832 goto fail;
1833
4cd1fbcc 1834 log_debug("%s scheduled restart job.", s->meta.id);
034c6ed7
LP		 1835 return;
1836
1837fail:
398ef8ba 1838 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
034c6ed7 1839 service_enter_dead(s, false, false);
398ef8ba
LP		 1840
1841 dbus_error_free(&error);
034c6ed7
LP		 1842}
1843
1844static void service_enter_reload(Service *s) {
1845 int r;
1846
1847 assert(s);
1848
5e94833f
LP		 1849 service_unwatch_control_pid(s);
1850
a16e1123 1851 s->control_command_id = SERVICE_EXEC_RELOAD;
80876c20 1852 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
81a2b7ce
LP		 1853 if ((r = service_spawn(s,
1854 s->control_command,
1855 true,
1856 false,
1857 !s->permissions_start_only,
1858 !s->root_directory_start_only,
c952c6ec 1859 false,
1e3ad081 1860 false,
e55224ca 1861 &s->control_pid)) < 0)
034c6ed7
LP		 1862 goto fail;
1863
80876c20
LP		 1864 service_set_state(s, SERVICE_RELOAD);
1865 } else
1866 service_enter_running(s, true);
034c6ed7
LP		 1867
1868 return;
1869
1870fail:
4cd1fbcc 1871 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1872 service_enter_stop(s, false);
1873}
1874
34e9ba66 1875static void service_run_next_control(Service *s, bool success) {
034c6ed7
LP		 1876 int r;
1877
1878 assert(s);
1879 assert(s->control_command);
1880 assert(s->control_command->command_next);
1881
1882 if (!success)
1883 s->failure = true;
1884
34e9ba66 1885 assert(s->control_command_id != SERVICE_EXEC_START);
034c6ed7 1886
34e9ba66 1887 s->control_command = s->control_command->command_next;
5e94833f
LP		 1888 service_unwatch_control_pid(s);
1889
81a2b7ce
LP		 1890 if ((r = service_spawn(s,
1891 s->control_command,
1892 true,
1893 false,
1894 !s->permissions_start_only,
1895 !s->root_directory_start_only,
5830833f
LP		 1896 s->control_command_id == SERVICE_EXEC_START_PRE ||
1897 s->control_command_id == SERVICE_EXEC_STOP_POST,
1e3ad081 1898 false,
e55224ca 1899 &s->control_pid)) < 0)
034c6ed7
LP		 1900 goto fail;
1901
1902 return;
1903
1904fail:
34e9ba66 1905 log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
034c6ed7 1906
80876c20
LP		 1907 if (s->state == SERVICE_START_PRE)
1908 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1909 else if (s->state == SERVICE_STOP)
1910 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
034c6ed7
LP		 1911 else if (s->state == SERVICE_STOP_POST)
1912 service_enter_dead(s, false, true);
1913 else
1914 service_enter_stop(s, false);
5cb5a6ff
LP		 1915}
1916
34e9ba66
LP		 1917static void service_run_next_main(Service *s, bool success) {
1918 pid_t pid;
1919 int r;
1920
1921 assert(s);
1922 assert(s->control_command);
1923 assert(s->control_command->command_next);
1924
1925 if (!success)
1926 s->failure = true;
1927
1928 assert(s->control_command_id == SERVICE_EXEC_START);
1929 assert(s->type == SERVICE_ONESHOT);
1930
1931 s->control_command = s->control_command->command_next;
1932 service_unwatch_main_pid(s);
1933
1934 if ((r = service_spawn(s,
1935 s->control_command,
1936 false,
1937 true,
1938 true,
1939 true,
1940 true,
1941 s->notify_access != NOTIFY_NONE,
1942 &pid)) < 0)
1943 goto fail;
1944
1945 service_set_main_pid(s, pid);
1946
1947 return;
1948
1949fail:
1950 log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
1951 service_enter_stop(s, false);
1952}
1953
87f0e418
LP		 1954static int service_start(Unit *u) {
1955 Service *s = SERVICE(u);
5cb5a6ff
LP		 1956
1957 assert(s);
1958
034c6ed7
LP		 1959 /* We cannot fulfill this request right now, try again later
1960 * please! */
1961 if (s->state == SERVICE_STOP ||
1962 s->state == SERVICE_STOP_SIGTERM ||
1963 s->state == SERVICE_STOP_SIGKILL ||
1964 s->state == SERVICE_STOP_POST ||
1965 s->state == SERVICE_FINAL_SIGTERM ||
1966 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1967 return -EAGAIN;
1968
034c6ed7
LP		 1969 /* Already on it! */
1970 if (s->state == SERVICE_START_PRE ||
1971 s->state == SERVICE_START ||
1972 s->state == SERVICE_START_POST)
1973 return 0;
1974
fdf20a31 1975 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1976
1e2e8133
LP		 1977 /* Make sure we don't enter a busy loop of some kind. */
1978 if (!ratelimit_test(&s->ratelimit)) {
9e2f7c11 1979 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
d5159713 1980 return -ECANCELED;
1e2e8133
LP		 1981 }
1982
cac6f7c8
LP		 1983 if ((s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1984 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1985 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) &&
1986 s->socket_fd < 0) {
1987 log_warning("%s can only be started with a per-connection socket.", u->meta.id);
1988 return -EINVAL;
1989 }
1990
034c6ed7
LP		 1991 s->failure = false;
1992 s->main_pid_known = false;
47342320 1993 s->forbid_restart = false;
034c6ed7
LP		 1994
1995 service_enter_start_pre(s);
1996 return 0;
5cb5a6ff
LP		 1997}
1998
87f0e418
LP		 1999static int service_stop(Unit *u) {
2000 Service *s = SERVICE(u);
5cb5a6ff
LP		 2001
2002 assert(s);
2003
3f6c78dc
LP		 2004 /* This is a user request, so don't do restarts on this
2005 * shutdown. */
47342320 2006 s->forbid_restart = true;
034c6ed7 2007
e537352b
LP		 2008 /* Already on it */
2009 if (s->state == SERVICE_STOP ||
2010 s->state == SERVICE_STOP_SIGTERM ||
2011 s->state == SERVICE_STOP_SIGKILL ||
2012 s->state == SERVICE_STOP_POST ||
2013 s->state == SERVICE_FINAL_SIGTERM ||
2014 s->state == SERVICE_FINAL_SIGKILL)
2015 return 0;
2016
3f6c78dc 2017 /* Don't allow a restart */
034c6ed7
LP		 2018 if (s->state == SERVICE_AUTO_RESTART) {
2019 service_set_state(s, SERVICE_DEAD);
2020 return 0;
2021 }
2022
3f6c78dc
LP		 2023 /* If there's already something running we go directly into
2024 * kill mode. */
2025 if (s->state == SERVICE_START_PRE ||
2026 s->state == SERVICE_START ||
2027 s->state == SERVICE_START_POST ||
2028 s->state == SERVICE_RELOAD) {
2029 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2030 return 0;
2031 }
5cb5a6ff 2032
3f6c78dc
LP		 2033 assert(s->state == SERVICE_RUNNING ||
2034 s->state == SERVICE_EXITED);
3a762661 2035
034c6ed7 2036 service_enter_stop(s, true);
5cb5a6ff
LP		 2037 return 0;
2038}
2039
87f0e418
LP		 2040static int service_reload(Unit *u) {
2041 Service *s = SERVICE(u);
034c6ed7
LP		 2042
2043 assert(s);
2044
80876c20 2045 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
034c6ed7
LP		 2046
2047 service_enter_reload(s);
5cb5a6ff
LP		 2048 return 0;
2049}
2050
87f0e418
LP		 2051static bool service_can_reload(Unit *u) {
2052 Service *s = SERVICE(u);
034c6ed7
LP		 2053
2054 assert(s);
2055
2056 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2057}
2058
a16e1123
LP		 2059static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2060 Service *s = SERVICE(u);
2061
2062 assert(u);
2063 assert(f);
2064 assert(fds);
2065
2066 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2067 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2068
2069 if (s->control_pid > 0)
5925dd3c 2070 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
a16e1123 2071
5925dd3c
LP		 2072 if (s->main_pid_known && s->main_pid > 0)
2073 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
a16e1123
LP		 2074
2075 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2076
3a2776bc
LP		 2077 if (s->status_text)
2078 unit_serialize_item(u, f, "status-text", s->status_text);
2079
a16e1123
LP		 2080 /* There's a minor uncleanliness here: if there are multiple
2081 * commands attached here, we will start from the first one
2082 * again */
2083 if (s->control_command_id >= 0)
825636e5 2084 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
a16e1123
LP		 2085
2086 if (s->socket_fd >= 0) {
2087 int copy;
2088
2089 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2090 return copy;
2091
2092 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2093 }
2094
ecdbca40
LP		 2095 if (s->main_exec_status.pid > 0) {
2096 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2097
2098 if (s->main_exec_status.start_timestamp.realtime > 0) {
2099 unit_serialize_item_format(u, f, "main-exec-status-start-realtime",
2100 "%llu", (unsigned long long) s->main_exec_status.start_timestamp.realtime);
2101
2102 unit_serialize_item_format(u, f, "main-exec-status-start-monotonic",
2103 "%llu", (unsigned long long) s->main_exec_status.start_timestamp.monotonic);
2104 }
2105
2106 if (s->main_exec_status.exit_timestamp.realtime > 0) {
2107 unit_serialize_item_format(u, f, "main-exec-status-exit-realtime",
2108 "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.realtime);
2109 unit_serialize_item_format(u, f, "main-exec-status-exit-monotonic",
2110 "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.monotonic);
2111
2112 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2113 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2114 }
2115 }
2116
a16e1123
LP		 2117 return 0;
2118}
2119
2120static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2121 Service *s = SERVICE(u);
a16e1123
LP		 2122
2123 assert(u);
2124 assert(key);
2125 assert(value);
2126 assert(fds);
2127
2128 if (streq(key, "state")) {
2129 ServiceState state;
2130
2131 if ((state = service_state_from_string(value)) < 0)
2132 log_debug("Failed to parse state value %s", value);
2133 else
2134 s->deserialized_state = state;
2135 } else if (streq(key, "failure")) {
2136 int b;
2137
2138 if ((b = parse_boolean(value)) < 0)
2139 log_debug("Failed to parse failure value %s", value);
2140 else
2141 s->failure = b || s->failure;
2142 } else if (streq(key, "control-pid")) {
5925dd3c 2143 pid_t pid;
a16e1123 2144
e364ad06 2145 if (parse_pid(value, &pid) < 0)
a16e1123
LP		 2146 log_debug("Failed to parse control-pid value %s", value);
2147 else
e55224ca 2148 s->control_pid = pid;
a16e1123 2149 } else if (streq(key, "main-pid")) {
5925dd3c 2150 pid_t pid;
a16e1123 2151
e364ad06 2152 if (parse_pid(value, &pid) < 0)
a16e1123
LP		 2153 log_debug("Failed to parse main-pid value %s", value);
2154 else
5925dd3c 2155 service_set_main_pid(s, (pid_t) pid);
a16e1123
LP		 2156 } else if (streq(key, "main-pid-known")) {
2157 int b;
2158
2159 if ((b = parse_boolean(value)) < 0)
2160 log_debug("Failed to parse main-pid-known value %s", value);
2161 else
2162 s->main_pid_known = b;
3a2776bc
LP		 2163 } else if (streq(key, "status-text")) {
2164 char *t;
2165
2166 if ((t = strdup(value))) {
2167 free(s->status_text);
2168 s->status_text = t;
2169 }
2170
a16e1123
LP		 2171 } else if (streq(key, "control-command")) {
2172 ServiceExecCommand id;
2173
2174 if ((id = service_exec_command_from_string(value)) < 0)
2175 log_debug("Failed to parse exec-command value %s", value);
2176 else {
2177 s->control_command_id = id;
2178 s->control_command = s->exec_command[id];
2179 }
2180 } else if (streq(key, "socket-fd")) {
2181 int fd;
2182
2183 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2184 log_debug("Failed to parse socket-fd value %s", value);
2185 else {
2186
2187 if (s->socket_fd >= 0)
2188 close_nointr_nofail(s->socket_fd);
2189 s->socket_fd = fdset_remove(fds, fd);
2190 }
ecdbca40
LP		 2191 } else if (streq(key, "main-exec-status-pid")) {
2192 pid_t pid;
2193
e364ad06 2194 if (parse_pid(value, &pid) < 0)
ecdbca40
LP		 2195 log_debug("Failed to parse main-exec-status-pid value %s", value);
2196 else
2197 s->main_exec_status.pid = pid;
2198 } else if (streq(key, "main-exec-status-code")) {
2199 int i;
2200
e364ad06 2201 if (safe_atoi(value, &i) < 0)
ecdbca40
LP		 2202 log_debug("Failed to parse main-exec-status-code value %s", value);
2203 else
2204 s->main_exec_status.code = i;
2205 } else if (streq(key, "main-exec-status-status")) {
2206 int i;
2207
e364ad06 2208 if (safe_atoi(value, &i) < 0)
ecdbca40
LP		 2209 log_debug("Failed to parse main-exec-status-status value %s", value);
2210 else
2211 s->main_exec_status.status = i;
2212 } else if (streq(key, "main-exec-status-start-realtime")) {
2213 uint64_t k;
2214
e364ad06 2215 if (safe_atou64(value, &k) < 0)
ecdbca40
LP		 2216 log_debug("Failed to parse main-exec-status-start-realtime value %s", value);
2217 else
2218 s->main_exec_status.start_timestamp.realtime = (usec_t) k;
2219 } else if (streq(key, "main-exec-status-start-monotonic")) {
2220 uint64_t k;
2221
e364ad06 2222 if (safe_atou64(value, &k) < 0)
ecdbca40
LP		 2223 log_debug("Failed to parse main-exec-status-start-monotonic value %s", value);
2224 else
2225 s->main_exec_status.start_timestamp.monotonic = (usec_t) k;
2226 } else if (streq(key, "main-exec-status-exit-realtime")) {
2227 uint64_t k;
2228
e364ad06 2229 if (safe_atou64(value, &k) < 0)
ecdbca40
LP		 2230 log_debug("Failed to parse main-exec-status-exit-realtime value %s", value);
2231 else
2232 s->main_exec_status.exit_timestamp.realtime = (usec_t) k;
2233 } else if (streq(key, "main-exec-status-exit-monotonic")) {
2234 uint64_t k;
2235
e364ad06 2236 if (safe_atou64(value, &k) < 0)
ecdbca40
LP		 2237 log_debug("Failed to parse main-exec-status-exit-monotonic value %s", value);
2238 else
2239 s->main_exec_status.exit_timestamp.monotonic = (usec_t) k;
a16e1123
LP		 2240 } else
2241 log_debug("Unknown serialization key '%s'", key);
2242
2243 return 0;
2244}
2245
87f0e418
LP		 2246static UnitActiveState service_active_state(Unit *u) {
2247 assert(u);
5cb5a6ff 2248
acbb0225 2249 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 2250}
2251
10a94420
LP		 2252static const char *service_sub_state_to_string(Unit *u) {
2253 assert(u);
2254
2255 return service_state_to_string(SERVICE(u)->state);
2256}
2257
701cc384
LP		 2258static bool service_check_gc(Unit *u) {
2259 Service *s = SERVICE(u);
2260
2261 assert(s);
2262
2263 return !!s->sysv_path;
2264}
2265
2266static bool service_check_snapshot(Unit *u) {
2267 Service *s = SERVICE(u);
2268
2269 assert(s);
2270
2271 return !s->got_socket_fd;
2272}
2273
87f0e418
LP		 2274static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2275 Service *s = SERVICE(u);
034c6ed7 2276 bool success;
5cb5a6ff
LP		 2277
2278 assert(s);
034c6ed7
LP		 2279 assert(pid >= 0);
2280
d06dacd0
LP		 2281 if (s->sysv_path)
2282 success = is_clean_exit_lsb(code, status);
2283 else
2284 success = is_clean_exit(code, status);
034c6ed7
LP		 2285
2286 if (s->main_pid == pid) {
2287
034c6ed7 2288 s->main_pid = 0;
34e9ba66 2289 exec_status_exit(&s->main_exec_status, pid, code, status);
034c6ed7 2290
34e9ba66
LP		 2291 if (s->type != SERVICE_FORKING && s->control_command) {
2292 s->control_command->exec_status = s->main_exec_status;
b708e7ce 2293
34e9ba66 2294 if (s->control_command->ignore)
b708e7ce 2295 success = true;
034c6ed7
LP		 2296 }
2297
92abbefb
LP		 2298 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2299 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
b708e7ce 2300 s->failure = s->failure || !success;
034c6ed7 2301
34e9ba66
LP		 2302 if (s->control_command &&
2303 s->control_command->command_next &&
2304 success) {
034c6ed7 2305
34e9ba66
LP		 2306 /* There is another command to *
2307 * execute, so let's do that. */
034c6ed7 2308
34e9ba66
LP		 2309 log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2310 service_run_next_main(s, success);
034c6ed7 2311
34e9ba66
LP		 2312 } else {
2313
2314 /* The service exited, so the service is officially
2315 * gone. */
2316
2317 s->control_command = NULL;
2318 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2319
2320 switch (s->state) {
2321
2322 case SERVICE_START_POST:
2323 case SERVICE_RELOAD:
2324 case SERVICE_STOP:
2325 /* Need to wait until the operation is
2326 * done */
c4653a4d 2327 break;
7d55e835 2328
34e9ba66
LP		 2329 case SERVICE_START:
2330 if (s->type == SERVICE_ONESHOT) {
2331 /* This was our main goal, so let's go on */
2332 if (success)
2333 service_enter_start_post(s);
2334 else
2335 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2336 break;
2337 } else {
2338 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
7d55e835 2339
34e9ba66
LP		 2340 /* Fall through */
2341 }
034c6ed7 2342
34e9ba66
LP		 2343 case SERVICE_RUNNING:
2344 service_enter_running(s, success);
2345 break;
034c6ed7 2346
34e9ba66
LP		 2347 case SERVICE_STOP_SIGTERM:
2348 case SERVICE_STOP_SIGKILL:
5cb5a6ff 2349
34e9ba66
LP		 2350 if (!control_pid_good(s))
2351 service_enter_stop_post(s, success);
5cb5a6ff 2352
34e9ba66
LP		 2353 /* If there is still a control process, wait for that first */
2354 break;
2355
2356 default:
2357 assert_not_reached("Uh, main process died at wrong time.");
2358 }
034c6ed7 2359 }
5cb5a6ff 2360
034c6ed7 2361 } else if (s->control_pid == pid) {
034c6ed7 2362
34e9ba66
LP		 2363 s->control_pid = 0;
2364
b708e7ce 2365 if (s->control_command) {
b58b4116 2366 exec_status_exit(&s->control_command->exec_status, pid, code, status);
a16e1123 2367
b708e7ce
LP		 2368 if (s->control_command->ignore)
2369 success = true;
2370 }
2371
34e9ba66 2372 log_full(success ? LOG_DEBUG : LOG_NOTICE,
92abbefb 2373 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
b708e7ce 2374 s->failure = s->failure || !success;
034c6ed7 2375
34e9ba66
LP		 2376 if (s->control_command &&
2377 s->control_command->command_next &&
2378 success) {
034c6ed7
LP		 2379
2380 /* There is another command to *
2381 * execute, so let's do that. */
2382
34e9ba66
LP		 2383 log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2384 service_run_next_control(s, success);
034c6ed7 2385
80876c20 2386 } else {
034c6ed7
LP		 2387 /* No further commands for this step, so let's
2388 * figure out what to do next */
2389
a16e1123
LP		 2390 s->control_command = NULL;
2391 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2392
9e2f7c11 2393 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
bd982a8b 2394
034c6ed7
LP		 2395 switch (s->state) {
2396
2397 case SERVICE_START_PRE:
2398 if (success)
2399 service_enter_start(s);
2400 else
80876c20 2401 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2402 break;
2403
2404 case SERVICE_START:
2405 assert(s->type == SERVICE_FORKING);
2406
2407 /* Let's try to load the pid
2408 * file here if we can. We
2409 * ignore the return value,
2410 * since the PID file might
2411 * actually be created by a
2412 * START_POST script */
2413
2414 if (success) {
2415 if (s->pid_file)
2416 service_load_pid_file(s);
2417
2418 service_enter_start_post(s);
2419 } else
80876c20 2420 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2421
2422 break;
2423
2424 case SERVICE_START_POST:
2425 if (success && s->pid_file && !s->main_pid_known) {
2426 int r;
2427
2428 /* Hmm, let's see if we can
2429 * load the pid now after the
2430 * start-post scripts got
2431 * executed. */
2432
2433 if ((r = service_load_pid_file(s)) < 0)
4cd1fbcc 2434 log_warning("%s: failed to load PID file %s: %s", s->meta.id, s->pid_file, strerror(-r));
034c6ed7
LP		 2435 }
2436
2437 /* Fall through */
2438
2439 case SERVICE_RELOAD:
80876c20
LP		 2440 if (success)
2441 service_enter_running(s, true);
2442 else
034c6ed7
LP		 2443 service_enter_stop(s, false);
2444
2445 break;
2446
2447 case SERVICE_STOP:
80876c20 2448 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
034c6ed7
LP		 2449 break;
2450
2451 case SERVICE_STOP_SIGTERM:
2452 case SERVICE_STOP_SIGKILL:
2453 if (main_pid_good(s) <= 0)
2454 service_enter_stop_post(s, success);
2455
2456 /* If there is still a service
2457 * process around, wait until
2458 * that one quit, too */
2459 break;
2460
2461 case SERVICE_STOP_POST:
2462 case SERVICE_FINAL_SIGTERM:
2463 case SERVICE_FINAL_SIGKILL:
2464 service_enter_dead(s, success, true);
2465 break;
2466
2467 default:
2468 assert_not_reached("Uh, control process died at wrong time.");
2469 }
2470 }
8c47c732 2471 }
c4e2ceae
LP		 2472
2473 /* Notify clients about changed exit status */
2474 unit_add_to_dbus_queue(u);
034c6ed7
LP		 2475}
2476
acbb0225 2477static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 2478 Service *s = SERVICE(u);
034c6ed7
LP		 2479
2480 assert(s);
2481 assert(elapsed == 1);
2482
acbb0225 2483 assert(w == &s->timer_watch);
034c6ed7
LP		 2484
2485 switch (s->state) {
2486
2487 case SERVICE_START_PRE:
2488 case SERVICE_START:
9e2f7c11 2489 log_warning("%s operation timed out. Terminating.", u->meta.id);
80876c20
LP		 2490 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2491 break;
2492
034c6ed7
LP		 2493 case SERVICE_START_POST:
2494 case SERVICE_RELOAD:
9e2f7c11 2495 log_warning("%s operation timed out. Stopping.", u->meta.id);
034c6ed7
LP		 2496 service_enter_stop(s, false);
2497 break;
2498
2499 case SERVICE_STOP:
9e2f7c11 2500 log_warning("%s stopping timed out. Terminating.", u->meta.id);
034c6ed7
LP		 2501 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2502 break;
2503
2504 case SERVICE_STOP_SIGTERM:
9e2f7c11 2505 log_warning("%s stopping timed out. Killing.", u->meta.id);
034c6ed7
LP		 2506 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2507 break;
2508
2509 case SERVICE_STOP_SIGKILL:
2510 /* Uh, wie sent a SIGKILL and it is still not gone?
2511 * Must be something we cannot kill, so let's just be
2512 * weirded out and continue */
2513
9e2f7c11 2514 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
034c6ed7
LP		 2515 service_enter_stop_post(s, false);
2516 break;
2517
2518 case SERVICE_STOP_POST:
9e2f7c11 2519 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
034c6ed7
LP		 2520 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2521 break;
2522
2523 case SERVICE_FINAL_SIGTERM:
9e2f7c11 2524 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
034c6ed7
LP		 2525 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2526 break;
2527
2528 case SERVICE_FINAL_SIGKILL:
fdf20a31 2529 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
034c6ed7
LP		 2530 service_enter_dead(s, false, true);
2531 break;
2532
2533 case SERVICE_AUTO_RESTART:
54165a39 2534 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
034c6ed7
LP		 2535 service_enter_restart(s);
2536 break;
2537
2538 default:
2539 assert_not_reached("Timeout at wrong time.");
2540 }
5cb5a6ff
LP		 2541}
2542
8e274523
LP		 2543static void service_cgroup_notify_event(Unit *u) {
2544 Service *s = SERVICE(u);
2545
2546 assert(u);
2547
9e2f7c11 2548 log_debug("%s: cgroup is empty", u->meta.id);
8e274523
LP		 2549
2550 switch (s->state) {
2551
2552 /* Waiting for SIGCHLD is usually more interesting,
2553 * because it includes return codes/signals. Which is
2554 * why we ignore the cgroup events for most cases,
2555 * except when we don't know pid which to expect the
2556 * SIGCHLD for. */
2557
2558 case SERVICE_RUNNING:
80876c20 2559 service_enter_running(s, true);
8e274523
LP		 2560 break;
2561
28708d8a
LP		 2562 case SERVICE_STOP_SIGTERM:
2563 case SERVICE_STOP_SIGKILL:
2564 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2565 service_enter_stop_post(s, true);
2566
2567 break;
2568
7f97f0fe
LP		 2569 case SERVICE_FINAL_SIGTERM:
2570 case SERVICE_FINAL_SIGKILL:
2571 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2572 service_enter_dead(s, true, true);
2573
2574 break;
2575
8e274523
LP		 2576 default:
2577 ;
2578 }
2579}
2580
c952c6ec 2581static void service_notify_message(Unit *u, pid_t pid, char **tags) {
8c47c732
LP		 2582 Service *s = SERVICE(u);
2583 const char *e;
2584
2585 assert(u);
2586
c952c6ec
LP		 2587 if (s->notify_access == NOTIFY_NONE) {
2588 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2589 u->meta.id, (unsigned long) pid);
2590 return;
2591 }
2592
2593 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2594 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2595 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2596 return;
2597 }
2598
8c47c732
LP		 2599 log_debug("%s: Got message", u->meta.id);
2600
2601 /* Interpret MAINPID= */
2602 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2603 (s->state == SERVICE_START ||
2604 s->state == SERVICE_START_POST ||
2605 s->state == SERVICE_RUNNING ||
2606 s->state == SERVICE_RELOAD)) {
8c47c732 2607
5925dd3c 2608 if (parse_pid(e + 8, &pid) < 0)
92abbefb 2609 log_warning("Failed to parse notification message %s", e);
8c47c732
LP		 2610 else {
2611 log_debug("%s: got %s", u->meta.id, e);
5925dd3c 2612 service_set_main_pid(s, pid);
8c47c732
LP		 2613 }
2614 }
2615
2616 /* Interpret READY= */
2617 if (s->type == SERVICE_NOTIFY &&
2618 s->state == SERVICE_START &&
2619 strv_find(tags, "READY=1")) {
2620 log_debug("%s: got READY=1", u->meta.id);
2621
2622 service_enter_start_post(s);
2623 }
2624
2625 /* Interpret STATUS= */
2626 if ((e = strv_find_prefix(tags, "STATUS="))) {
2627 char *t;
2628
3a2776bc
LP		 2629 if (e[7]) {
2630 if (!(t = strdup(e+7))) {
2631 log_error("Failed to allocate string.");
2632 return;
2633 }
2634
2635 log_debug("%s: got %s", u->meta.id, e);
8c47c732 2636
3a2776bc
LP		 2637 free(s->status_text);
2638 s->status_text = t;
2639 } else {
2640 free(s->status_text);
2641 s->status_text = NULL;
2642 }
8c47c732 2643
8c47c732 2644 }
c4e2ceae
LP		 2645
2646 /* Notify clients about changed status or main pid */
2647 unit_add_to_dbus_queue(u);
8c47c732
LP		 2648}
2649
2c4104f0 2650static int service_enumerate(Manager *m) {
2c4104f0
LP		 2651 char **p;
2652 unsigned i;
2653 DIR *d = NULL;
2654 char *path = NULL, *fpath = NULL, *name = NULL;
c68364b7
LP		 2655 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
2656 Unit *service;
2657 Iterator j;
2c4104f0
LP		 2658 int r;
2659
2660 assert(m);
2661
c68364b7
LP		 2662 zero(runlevel_services);
2663
84e3543e 2664 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
09cd1ab1 2665 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2c4104f0
LP		 2666 struct dirent *de;
2667
2668 free(path);
2669 path = NULL;
09cd1ab1 2670 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2c4104f0
LP		 2671 r = -ENOMEM;
2672 goto finish;
2673 }
2674
2675 if (d)
2676 closedir(d);
2677
2678 if (!(d = opendir(path))) {
2679 if (errno != ENOENT)
2680 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2681
2682 continue;
2683 }
2684
2685 while ((de = readdir(d))) {
db06e3b6 2686 int a, b;
2c4104f0
LP		 2687
2688 if (ignore_file(de->d_name))
2689 continue;
2690
2691 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2692 continue;
2693
2694 if (strlen(de->d_name) < 4)
2695 continue;
2696
db06e3b6
LP		 2697 a = undecchar(de->d_name[1]);
2698 b = undecchar(de->d_name[2]);
2699
2700 if (a < 0 || b < 0)
2701 continue;
2702
2c4104f0
LP		 2703 free(fpath);
2704 fpath = NULL;
09cd1ab1 2705 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2c4104f0
LP		 2706 r = -ENOMEM;
2707 goto finish;
2708 }
2709
2710 if (access(fpath, X_OK) < 0) {
2711
2712 if (errno != ENOENT)
2713 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2714
2715 continue;
2716 }
2717
2718 free(name);
b7ccee3c 2719 if (!(name = sysv_translate_name(de->d_name + 3))) {
2c4104f0
LP		 2720 r = -ENOMEM;
2721 goto finish;
2722 }
2723
398ef8ba 2724 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
fbe9f3a9
LP		 2725 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2726 continue;
2727 }
2c4104f0 2728
c68364b7
LP		 2729 if (de->d_name[0] == 'S') {
2730
f73d93a4
LP		 2731 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
2732 SERVICE(service)->sysv_start_priority =
2733 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
db06e3b6 2734
c68364b7 2735 SERVICE(service)->sysv_enabled = true;
f73d93a4 2736 }
db06e3b6 2737
c68364b7
LP		 2738 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
2739 goto finish;
2c4104f0 2740
c68364b7 2741 if ((r = set_put(runlevel_services[i], service)) < 0)
2c4104f0 2742 goto finish;
23a177ef 2743
fc5df99e
LP		 2744 } else if (de->d_name[0] == 'K' &&
2745 (rcnd_table[i].type == RUNLEVEL_DOWN ||
2746 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
6542952f 2747
c68364b7
LP		 2748 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
2749 goto finish;
2750
2751 if ((r = set_put(shutdown_services, service)) < 0)
2c4104f0
LP		 2752 goto finish;
2753 }
2754 }
2755 }
2756
c68364b7
LP		 2757 /* Now we loaded all stubs and are aware of the lowest
2758 start-up priority for all services, not let's actually load
2759 the services, this will also tell us which services are
2760 actually native now */
2761 manager_dispatch_load_queue(m);
2762
2763 /* If this is a native service, rely on native ways to pull in
2764 * a service, don't pull it in via sysv rcN.d links. */
2765 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
2766 SET_FOREACH(service, runlevel_services[i], j) {
2767 service = unit_follow_merge(service);
2768
2769 if (service->meta.fragment_path)
2770 continue;
2771
2772 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
2773 goto finish;
2774 }
2775
2776 /* We honour K links only for halt/reboot. For the normal
2777 * runlevels we assume the stop jobs will be implicitly added
2778 * by the core logic. Also, we don't really distuingish here
2779 * between the runlevels 0 and 6 and just add them to the
2780 * special shutdown target. On SUSE the boot.d/ runlevel is
2781 * also used for shutdown, so we add links for that too to the
2782 * shutdown target.*/
2783 SET_FOREACH(service, shutdown_services, j) {
2784 service = unit_follow_merge(service);
2785
2786 if (service->meta.fragment_path)
2787 continue;
2788
2789 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
2790 goto finish;
2791 }
2792
2c4104f0
LP		 2793 r = 0;
2794
2795finish:
2796 free(path);
2797 free(fpath);
2798 free(name);
fbe9f3a9 2799
c68364b7
LP		 2800 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
2801 set_free(runlevel_services[i]);
2802 set_free(shutdown_services);
2803
fbe9f3a9
LP		 2804 if (d)
2805 closedir(d);
2c4104f0
LP		 2806
2807 return r;
2808}
2809
05e343b7
LP		 2810static void service_bus_name_owner_change(
2811 Unit *u,
2812 const char *name,
2813 const char *old_owner,
2814 const char *new_owner) {
2815
2816 Service *s = SERVICE(u);
2817
2818 assert(s);
2819 assert(name);
2820
2821 assert(streq(s->bus_name, name));
2822 assert(old_owner || new_owner);
2823
2824 if (old_owner && new_owner)
2825 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2826 else if (old_owner)
2827 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2828 else
2829 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2830
2831 s->bus_name_good = !!new_owner;
2832
2833 if (s->type == SERVICE_DBUS) {
2834
2835 /* service_enter_running() will figure out what to
2836 * do */
2837 if (s->state == SERVICE_RUNNING)
2838 service_enter_running(s, true);
2839 else if (s->state == SERVICE_START && new_owner)
2840 service_enter_start_post(s);
2841
2842 } else if (new_owner &&
2843 s->main_pid <= 0 &&
2844 (s->state == SERVICE_START ||
2845 s->state == SERVICE_START_POST ||
2846 s->state == SERVICE_RUNNING ||
2847 s->state == SERVICE_RELOAD)) {
2848
2849 /* Try to acquire PID from bus service */
2850 log_debug("Trying to acquire PID from D-Bus name...");
2851
2852 bus_query_pid(u->meta.manager, name);
2853 }
2854}
2855
2856static void service_bus_query_pid_done(
2857 Unit *u,
2858 const char *name,
2859 pid_t pid) {
2860
2861 Service *s = SERVICE(u);
2862
2863 assert(s);
2864 assert(name);
2865
2866 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2867
2868 if (s->main_pid <= 0 &&
2869 (s->state == SERVICE_START ||
2870 s->state == SERVICE_START_POST ||
2871 s->state == SERVICE_RUNNING ||
2872 s->state == SERVICE_RELOAD))
5925dd3c 2873 service_set_main_pid(s, pid);
05e343b7
LP		 2874}
2875
6cf6bbc2 2876int service_set_socket_fd(Service *s, int fd, Socket *sock) {
4f2d528d
LP		 2877 assert(s);
2878 assert(fd >= 0);
2879
2880 /* This is called by the socket code when instantiating a new
2881 * service for a stream socket and the socket needs to be
2882 * configured. */
2883
4cd1fbcc 2884 if (s->meta.load_state != UNIT_LOADED)
4f2d528d
LP		 2885 return -EINVAL;
2886
2887 if (s->socket_fd >= 0)
2888 return -EBUSY;
2889
2890 if (s->state != SERVICE_DEAD)
2891 return -EAGAIN;
2892
2893 s->socket_fd = fd;
701cc384 2894 s->got_socket_fd = true;
6cf6bbc2
LP		 2895 s->socket = sock;
2896
4f2d528d
LP		 2897 return 0;
2898}
2899
fdf20a31 2900static void service_reset_failed(Unit *u) {
5632e374
LP		 2901 Service *s = SERVICE(u);
2902
2903 assert(s);
2904
fdf20a31 2905 if (s->state == SERVICE_FAILED)
5632e374
LP		 2906 service_set_state(s, SERVICE_DEAD);
2907
2908 s->failure = false;
2909}
2910
94f04347
LP		 2911static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2912 [SERVICE_DEAD] = "dead",
2913 [SERVICE_START_PRE] = "start-pre",
2914 [SERVICE_START] = "start",
2915 [SERVICE_START_POST] = "start-post",
2916 [SERVICE_RUNNING] = "running",
80876c20 2917 [SERVICE_EXITED] = "exited",
94f04347
LP		 2918 [SERVICE_RELOAD] = "reload",
2919 [SERVICE_STOP] = "stop",
2920 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2921 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2922 [SERVICE_STOP_POST] = "stop-post",
2923 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2924 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
fdf20a31 2925 [SERVICE_FAILED] = "failed",
94f04347
LP		 2926 [SERVICE_AUTO_RESTART] = "auto-restart",
2927};
2928
2929DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2930
2931static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2932 [SERVICE_ONCE] = "once",
2933 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
40531a55 2934 [SERVICE_RESTART_ALWAYS] = "restart-always",
94f04347
LP		 2935};
2936
2937DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2938
2939static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
94f04347 2940 [SERVICE_SIMPLE] = "simple",
0d624a78 2941 [SERVICE_FORKING] = "forking",
34e9ba66 2942 [SERVICE_ONESHOT] = "oneshot",
8c47c732
LP		 2943 [SERVICE_DBUS] = "dbus",
2944 [SERVICE_NOTIFY] = "notify"
94f04347
LP		 2945};
2946
2947DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2948
e537352b 2949static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
94f04347
LP		 2950 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2951 [SERVICE_EXEC_START] = "ExecStart",
2952 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2953 [SERVICE_EXEC_RELOAD] = "ExecReload",
2954 [SERVICE_EXEC_STOP] = "ExecStop",
2955 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2956};
2957
2958DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2959
c952c6ec
LP		 2960static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
2961 [NOTIFY_NONE] = "none",
2962 [NOTIFY_MAIN] = "main",
2963 [NOTIFY_ALL] = "all"
2964};
2965
2966DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
2967
87f0e418 2968const UnitVTable service_vtable = {
5cb5a6ff 2969 .suffix = ".service",
9e58ff9c 2970 .show_status = true,
5cb5a6ff 2971
034c6ed7
LP		 2972 .init = service_init,
2973 .done = service_done,
a16e1123
LP		 2974 .load = service_load,
2975
2976 .coldplug = service_coldplug,
034c6ed7 2977
5cb5a6ff
LP		 2978 .dump = service_dump,
2979
2980 .start = service_start,
2981 .stop = service_stop,
2982 .reload = service_reload,
2983
034c6ed7
LP		 2984 .can_reload = service_can_reload,
2985
a16e1123
LP		 2986 .serialize = service_serialize,
2987 .deserialize_item = service_deserialize_item,
2988
5cb5a6ff 2989 .active_state = service_active_state,
10a94420 2990 .sub_state_to_string = service_sub_state_to_string,
5cb5a6ff 2991
701cc384
LP		 2992 .check_gc = service_check_gc,
2993 .check_snapshot = service_check_snapshot,
2994
034c6ed7
LP		 2995 .sigchld_event = service_sigchld_event,
2996 .timer_event = service_timer_event,
2c4104f0 2997
fdf20a31 2998 .reset_failed = service_reset_failed,
5632e374 2999
8e274523 3000 .cgroup_notify_empty = service_cgroup_notify_event,
8c47c732 3001 .notify_message = service_notify_message,
8e274523 3002
05e343b7
LP		 3003 .bus_name_owner_change = service_bus_name_owner_change,
3004 .bus_query_pid_done = service_bus_query_pid_done,
3005
c4e2ceae 3006 .bus_interface = "org.freedesktop.systemd1.Service",
4139c1b2 3007 .bus_message_handler = bus_service_message_handler,
c4e2ceae 3008 .bus_invalidating_properties = bus_service_invalidating_properties,
4139c1b2 3009
2c4104f0 3010 .enumerate = service_enumerate
5cb5a6ff 3011};
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