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core: be stricter when parsing User=/Group= fields
[thirdparty/systemd.git] / src / core / service.c
CommitLineData
a7334b09
LP		 1/***
2 This file is part of systemd.
3
4 Copyright 2010 Lennart Poettering
5
6 systemd is free software; you can redistribute it and/or modify it
5430f7f2
LP		 7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
a7334b09
LP		 9 (at your option) any later version.
10
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5430f7f2 14 Lesser General Public License for more details.
a7334b09 15
5430f7f2 16 You should have received a copy of the GNU Lesser General Public License
a7334b09
LP		 17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
18***/
19
5cb5a6ff 20#include <errno.h>
034c6ed7 21#include <signal.h>
2c4104f0 22#include <unistd.h>
5cb5a6ff 23
b5efdb8a 24#include "alloc-util.h"
574634bc 25#include "async.h"
4f5dd394
LP		 26#include "bus-error.h"
27#include "bus-kernel.h"
28#include "bus-util.h"
4139c1b2 29#include "dbus-service.h"
f6a6225e 30#include "def.h"
4d1a6904 31#include "env-util.h"
4f5dd394
LP		 32#include "escape.h"
33#include "exit-status.h"
3ffd4af2 34#include "fd-util.h"
a5c32cff 35#include "fileio.h"
6482f626 36#include "formats-util.h"
f4f15635 37#include "fs-util.h"
4f5dd394
LP		 38#include "load-dropin.h"
39#include "load-fragment.h"
40#include "log.h"
41#include "manager.h"
6bedfcbb 42#include "parse-util.h"
4f5dd394 43#include "path-util.h"
0b452006 44#include "process-util.h"
3ffd4af2 45#include "service.h"
24882e06 46#include "signal-util.h"
4f5dd394 47#include "special.h"
8b43440b 48#include "string-table.h"
07630cea 49#include "string-util.h"
4f5dd394
LP		 50#include "strv.h"
51#include "unit-name.h"
52#include "unit-printf.h"
53#include "unit.h"
54#include "utf8.h"
55#include "util.h"
034c6ed7 56
acbb0225 57static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
87f0e418
LP		 58 [SERVICE_DEAD] = UNIT_INACTIVE,
59 [SERVICE_START_PRE] = UNIT_ACTIVATING,
60 [SERVICE_START] = UNIT_ACTIVATING,
61 [SERVICE_START_POST] = UNIT_ACTIVATING,
62 [SERVICE_RUNNING] = UNIT_ACTIVE,
80876c20 63 [SERVICE_EXITED] = UNIT_ACTIVE,
032ff4af 64 [SERVICE_RELOAD] = UNIT_RELOADING,
87f0e418 65 [SERVICE_STOP] = UNIT_DEACTIVATING,
db2cb23b 66 [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING,
87f0e418
LP		 67 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
68 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
69 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
70 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
71 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
fdf20a31 72 [SERVICE_FAILED] = UNIT_FAILED,
6124958c 73 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
034c6ed7 74};
5cb5a6ff 75
e056b01d
LP		 76/* For Type=idle we never want to delay any other jobs, hence we
77 * consider idle jobs active as soon as we start working on them */
78static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = {
79 [SERVICE_DEAD] = UNIT_INACTIVE,
80 [SERVICE_START_PRE] = UNIT_ACTIVE,
81 [SERVICE_START] = UNIT_ACTIVE,
82 [SERVICE_START_POST] = UNIT_ACTIVE,
83 [SERVICE_RUNNING] = UNIT_ACTIVE,
84 [SERVICE_EXITED] = UNIT_ACTIVE,
85 [SERVICE_RELOAD] = UNIT_RELOADING,
86 [SERVICE_STOP] = UNIT_DEACTIVATING,
db2cb23b 87 [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING,
e056b01d
LP		 88 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
89 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
90 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
91 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
92 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
93 [SERVICE_FAILED] = UNIT_FAILED,
94 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
95};
96
718db961
LP		 97static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata);
98static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata);
99static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata);
100
842129f5 101static void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
308d72dc 102static void service_enter_reload_by_notify(Service *s);
842129f5 103
a16e1123
LP		 104static void service_init(Unit *u) {
105 Service *s = SERVICE(u);
106
107 assert(u);
ac155bb8 108 assert(u->load_state == UNIT_STUB);
a16e1123 109
1f19a534
OS		 110 s->timeout_start_usec = u->manager->default_timeout_start_usec;
111 s->timeout_stop_usec = u->manager->default_timeout_stop_usec;
112 s->restart_usec = u->manager->default_restart_usec;
36c16a7c 113 s->runtime_max_usec = USEC_INFINITY;
0b86feac 114 s->type = _SERVICE_TYPE_INVALID;
a16e1123 115 s->socket_fd = -1;
a34ceba6 116 s->stdin_fd = s->stdout_fd = s->stderr_fd = -1;
3185a36b 117 s->guess_main_pid = true;
a16e1123 118
a16e1123
LP		 119 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
120}
121
5e94833f
LP		 122static void service_unwatch_control_pid(Service *s) {
123 assert(s);
124
125 if (s->control_pid <= 0)
126 return;
127
128 unit_unwatch_pid(UNIT(s), s->control_pid);
129 s->control_pid = 0;
130}
131
132static void service_unwatch_main_pid(Service *s) {
133 assert(s);
134
135 if (s->main_pid <= 0)
136 return;
137
138 unit_unwatch_pid(UNIT(s), s->main_pid);
139 s->main_pid = 0;
140}
141
3e52541e
MS		 142static void service_unwatch_pid_file(Service *s) {
143 if (!s->pid_file_pathspec)
144 return;
145
f2341e0a 146 log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path);
718db961 147 path_spec_unwatch(s->pid_file_pathspec);
3e52541e 148 path_spec_done(s->pid_file_pathspec);
a1e58e8e 149 s->pid_file_pathspec = mfree(s->pid_file_pathspec);
3e52541e
MS		 150}
151
5925dd3c 152static int service_set_main_pid(Service *s, pid_t pid) {
e55224ca
LP		 153 pid_t ppid;
154
5925dd3c
LP		 155 assert(s);
156
157 if (pid <= 1)
158 return -EINVAL;
159
160 if (pid == getpid())
161 return -EINVAL;
162
7400b9d2
LP		 163 if (s->main_pid == pid && s->main_pid_known)
164 return 0;
165
166 if (s->main_pid != pid) {
167 service_unwatch_main_pid(s);
168 exec_status_start(&s->main_exec_status, pid);
169 }
41efeaec 170
6dfa5494
LP		 171 s->main_pid = pid;
172 s->main_pid_known = true;
173
6bc73acb 174 if (get_process_ppid(pid, &ppid) >= 0 && ppid != getpid()) {
f2341e0a 175 log_unit_warning(UNIT(s), "Supervising process "PID_FMT" which is not our child. We'll most likely not notice when it exits.", pid);
6dfa5494
LP		 176 s->main_pid_alien = true;
177 } else
178 s->main_pid_alien = false;
5925dd3c
LP		 179
180 return 0;
181}
182
3e7a1f50 183void service_close_socket_fd(Service *s) {
4f2d528d
LP		 184 assert(s);
185
5cc3985e 186 /* Undo the effect of service_set_socket_fd(). */
4f2d528d 187
5cc3985e 188 s->socket_fd = asynchronous_close(s->socket_fd);
6cf6bbc2 189
5cc3985e
LP		 190 if (UNIT_ISSET(s->accept_socket)) {
191 socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
192 unit_ref_unset(&s->accept_socket);
193 }
6cf6bbc2
LP		 194}
195
a6927d7f
MO		 196static void service_stop_watchdog(Service *s) {
197 assert(s);
198
718db961 199 s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source);
842129f5 200 s->watchdog_timestamp = DUAL_TIMESTAMP_NULL;
a6927d7f
MO		 201}
202
2787d83c
M		 203static usec_t service_get_watchdog_usec(Service *s) {
204 assert(s);
205
206 if (s->watchdog_override_enable)
207 return s->watchdog_override_usec;
208 else
209 return s->watchdog_usec;
210}
211
842129f5 212static void service_start_watchdog(Service *s) {
bb242b7b 213 int r;
2787d83c 214 usec_t watchdog_usec;
bb242b7b
MO		 215
216 assert(s);
217
2787d83c
M		 218 watchdog_usec = service_get_watchdog_usec(s);
219 if (watchdog_usec == 0 || watchdog_usec == USEC_INFINITY)
bb242b7b
MO		 220 return;
221
718db961 222 if (s->watchdog_event_source) {
2787d83c 223 r = sd_event_source_set_time(s->watchdog_event_source, usec_add(s->watchdog_timestamp.monotonic, watchdog_usec));
718db961 224 if (r < 0) {
f2341e0a 225 log_unit_warning_errno(UNIT(s), r, "Failed to reset watchdog timer: %m");
718db961
LP		 226 return;
227 }
228
842129f5 229 r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT);
c4ef3317 230 } else {
6a0f1f6d
LP		 231 r = sd_event_add_time(
232 UNIT(s)->manager->event,
233 &s->watchdog_event_source,
234 CLOCK_MONOTONIC,
2787d83c 235 usec_add(s->watchdog_timestamp.monotonic, watchdog_usec), 0,
6a0f1f6d 236 service_dispatch_watchdog, s);
c4ef3317 237 if (r < 0) {
f2341e0a 238 log_unit_warning_errno(UNIT(s), r, "Failed to add watchdog timer: %m");
c4ef3317
LP		 239 return;
240 }
241
7dfbe2e3
TG		 242 (void) sd_event_source_set_description(s->watchdog_event_source, "service-watchdog");
243
c4ef3317
LP		 244 /* Let's process everything else which might be a sign
245 * of living before we consider a service died. */
246 r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE);
247 }
718db961 248
bb242b7b 249 if (r < 0)
f2341e0a 250 log_unit_warning_errno(UNIT(s), r, "Failed to install watchdog timer: %m");
bb242b7b
MO		 251}
252
a6927d7f
MO		 253static void service_reset_watchdog(Service *s) {
254 assert(s);
255
256 dual_timestamp_get(&s->watchdog_timestamp);
842129f5 257 service_start_watchdog(s);
a6927d7f
MO		 258}
259
2787d83c
M		 260static void service_reset_watchdog_timeout(Service *s, usec_t watchdog_override_usec) {
261 assert(s);
262
263 s->watchdog_override_enable = true;
264 s->watchdog_override_usec = watchdog_override_usec;
265 service_reset_watchdog(s);
266
267 log_unit_debug(UNIT(s), "watchdog_usec="USEC_FMT, s->watchdog_usec);
268 log_unit_debug(UNIT(s), "watchdog_override_usec="USEC_FMT, s->watchdog_override_usec);
269}
270
a354329f
LP		 271static void service_fd_store_unlink(ServiceFDStore *fs) {
272
273 if (!fs)
274 return;
275
276 if (fs->service) {
277 assert(fs->service->n_fd_store > 0);
278 LIST_REMOVE(fd_store, fs->service->fd_store, fs);
279 fs->service->n_fd_store--;
280 }
281
282 if (fs->event_source) {
283 sd_event_source_set_enabled(fs->event_source, SD_EVENT_OFF);
284 sd_event_source_unref(fs->event_source);
285 }
286
8dd4c05b 287 free(fs->fdname);
a354329f
LP		 288 safe_close(fs->fd);
289 free(fs);
290}
291
292static void service_release_resources(Unit *u) {
293 Service *s = SERVICE(u);
294
295 assert(s);
296
a34ceba6 297 if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0)
a354329f
LP		 298 return;
299
f2341e0a 300 log_unit_debug(u, "Releasing all resources.");
a354329f 301
a34ceba6
LP		 302 s->stdin_fd = safe_close(s->stdin_fd);
303 s->stdout_fd = safe_close(s->stdout_fd);
304 s->stderr_fd = safe_close(s->stderr_fd);
305
a354329f
LP		 306 while (s->fd_store)
307 service_fd_store_unlink(s->fd_store);
308
309 assert(s->n_fd_store == 0);
310}
311
87f0e418
LP		 312static void service_done(Unit *u) {
313 Service *s = SERVICE(u);
44d8db9e
LP		 314
315 assert(s);
316
a1e58e8e
LP		 317 s->pid_file = mfree(s->pid_file);
318 s->status_text = mfree(s->status_text);
efe6e7d3 319
613b411c 320 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
e537352b 321 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
44d8db9e 322 s->control_command = NULL;
867b3b7d 323 s->main_command = NULL;
44d8db9e 324
37520c1b
LP		 325 exit_status_set_free(&s->restart_prevent_status);
326 exit_status_set_free(&s->restart_force_status);
327 exit_status_set_free(&s->success_status);
96342de6 328
44d8db9e
LP		 329 /* This will leak a process, but at least no memory or any of
330 * our resources */
5e94833f
LP		 331 service_unwatch_main_pid(s);
332 service_unwatch_control_pid(s);
3e52541e 333 service_unwatch_pid_file(s);
44d8db9e 334
05e343b7 335 if (s->bus_name) {
ac155bb8 336 unit_unwatch_bus_name(u, s->bus_name);
a1e58e8e 337 s->bus_name = mfree(s->bus_name);
05e343b7
LP		 338 }
339
d8ccf5fd
DM		 340 s->bus_name_owner = mfree(s->bus_name_owner);
341
4f2d528d
LP		 342 service_close_socket_fd(s);
343
57020a3a 344 unit_ref_unset(&s->accept_socket);
f976f3f6 345
bb242b7b
MO		 346 service_stop_watchdog(s);
347
718db961 348 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
a354329f
LP		 349
350 service_release_resources(u);
718db961
LP		 351}
352
2339fc93
LP		 353static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) {
354 ServiceFDStore *fs = userdata;
355
356 assert(e);
357 assert(fs);
358
359 /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */
360 service_fd_store_unlink(fs);
361 return 0;
362}
363
8dd4c05b 364static int service_add_fd_store(Service *s, int fd, const char *name) {
2339fc93
LP		 365 ServiceFDStore *fs;
366 int r;
367
368 assert(s);
369 assert(fd >= 0);
370
371 if (s->n_fd_store >= s->n_fd_store_max)
372 return 0;
373
374 LIST_FOREACH(fd_store, fs, s->fd_store) {
375 r = same_fd(fs->fd, fd);
376 if (r < 0)
377 return r;
378 if (r > 0) {
379 /* Already included */
380 safe_close(fd);
381 return 1;
382 }
383 }
384
385 fs = new0(ServiceFDStore, 1);
386 if (!fs)
387 return -ENOMEM;
388
389 fs->fd = fd;
390 fs->service = s;
8dd4c05b 391 fs->fdname = strdup(name ?: "stored");
17dec0f7 392 if (!fs->fdname) {
393 free(fs);
8dd4c05b 394 return -ENOMEM;
17dec0f7 395 }
2339fc93
LP		 396
397 r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs);
398 if (r < 0) {
8dd4c05b 399 free(fs->fdname);
2339fc93
LP		 400 free(fs);
401 return r;
402 }
403
7dfbe2e3
TG		 404 (void) sd_event_source_set_description(fs->event_source, "service-fd-store");
405
2339fc93
LP		 406 LIST_PREPEND(fd_store, s->fd_store, fs);
407 s->n_fd_store++;
408
409 return 1;
410}
411
8dd4c05b 412static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name) {
2339fc93
LP		 413 int r;
414
415 assert(s);
416
417 if (fdset_size(fds) <= 0)
418 return 0;
419
420 while (s->n_fd_store < s->n_fd_store_max) {
421 _cleanup_close_ int fd = -1;
422
423 fd = fdset_steal_first(fds);
424 if (fd < 0)
425 break;
426
8dd4c05b 427 r = service_add_fd_store(s, fd, name);
2339fc93 428 if (r < 0)
f2341e0a 429 return log_unit_error_errno(UNIT(s), r, "Couldn't add fd to fd store: %m");
2339fc93 430 if (r > 0) {
f2341e0a 431 log_unit_debug(UNIT(s), "Added fd to fd store.");
2339fc93
LP		 432 fd = -1;
433 }
434 }
435
436 if (fdset_size(fds) > 0)
4b172825 437 log_unit_warning(UNIT(s), "Tried to store more fds than FileDescriptorStoreMax=%u allows, closing remaining.", s->n_fd_store_max);
2339fc93
LP		 438
439 return 0;
440}
441
718db961
LP		 442static int service_arm_timer(Service *s, usec_t usec) {
443 int r;
444
445 assert(s);
446
718db961 447 if (s->timer_event_source) {
36c16a7c 448 r = sd_event_source_set_time(s->timer_event_source, usec);
718db961
LP		 449 if (r < 0)
450 return r;
451
452 return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT);
453 }
454
36c16a7c
LP		 455 if (usec == USEC_INFINITY)
456 return 0;
457
7dfbe2e3 458 r = sd_event_add_time(
6a0f1f6d
LP		 459 UNIT(s)->manager->event,
460 &s->timer_event_source,
461 CLOCK_MONOTONIC,
36c16a7c 462 usec, 0,
6a0f1f6d 463 service_dispatch_timer, s);
7dfbe2e3
TG		 464 if (r < 0)
465 return r;
466
467 (void) sd_event_source_set_description(s->timer_event_source, "service-timer");
468
469 return 0;
44d8db9e
LP		 470}
471
243b1432
LP		 472static int service_verify(Service *s) {
473 assert(s);
474
1124fe6f 475 if (UNIT(s)->load_state != UNIT_LOADED)
243b1432
LP		 476 return 0;
477
96fb8242 478 if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP]) {
f2341e0a 479 log_unit_error(UNIT(s), "Service lacks both ExecStart= and ExecStop= setting. Refusing.");
243b1432
LP		 480 return -EINVAL;
481 }
482
96fb8242 483 if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) {
f2341e0a 484 log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.");
96fb8242
LP		 485 return -EINVAL;
486 }
487
488 if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START]) {
f2341e0a 489 log_unit_error(UNIT(s), "Service has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing.");
96fb8242
LP		 490 return -EINVAL;
491 }
492
493 if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) {
f2341e0a 494 log_unit_error(UNIT(s), "Service has more than one ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.");
6cf6bbc2
LP		 495 return -EINVAL;
496 }
497
b0693d30 498 if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) {
f2341e0a 499 log_unit_error(UNIT(s), "Service has Restart= setting other than no, which isn't allowed for Type=oneshot services. Refusing.");
37520c1b
LP		 500 return -EINVAL;
501 }
502
55ebf98c 503 if (s->type == SERVICE_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) {
f2341e0a 504 log_unit_error(UNIT(s), "Service has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing.");
b0693d30
MW		 505 return -EINVAL;
506 }
507
05e343b7 508 if (s->type == SERVICE_DBUS && !s->bus_name) {
f2341e0a 509 log_unit_error(UNIT(s), "Service is of type D-Bus but no D-Bus service name has been specified. Refusing.");
4d0e5dbd
LP		 510 return -EINVAL;
511 }
512
7e2668c6 513 if (s->bus_name && s->type != SERVICE_DBUS)
f2341e0a 514 log_unit_warning(UNIT(s), "Service has a D-Bus service name specified, but is not of type dbus. Ignoring.");
7e2668c6 515
ebc2259d 516 if (s->exec_context.pam_name && !(s->kill_context.kill_mode == KILL_CONTROL_GROUP || s->kill_context.kill_mode == KILL_MIXED)) {
f2341e0a 517 log_unit_error(UNIT(s), "Service has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. Refusing.");
05e343b7
LP		 518 return -EINVAL;
519 }
520
6b7e5923
PS		 521 if (s->usb_function_descriptors && !s->usb_function_strings)
522 log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring.");
523
524 if (!s->usb_function_descriptors && s->usb_function_strings)
525 log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring.");
526
36c16a7c
LP		 527 if (s->runtime_max_usec != USEC_INFINITY && s->type == SERVICE_ONESHOT)
528 log_unit_warning(UNIT(s), "MaxRuntimeSec= has no effect in combination with Type=oneshot. Ignoring.");
529
243b1432
LP		 530 return 0;
531}
532
a40eb732
LP		 533static int service_add_default_dependencies(Service *s) {
534 int r;
535
536 assert(s);
537
45f06b34
LP		 538 if (!UNIT(s)->default_dependencies)
539 return 0;
540
a40eb732
LP		 541 /* Add a number of automatic dependencies useful for the
542 * majority of services. */
543
463d0d15 544 if (MANAGER_IS_SYSTEM(UNIT(s)->manager)) {
cb4c247d
LP		 545 /* First, pull in the really early boot stuff, and
546 * require it, so that we fail if we can't acquire
547 * it. */
548
549 r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SYSINIT_TARGET, NULL, true);
550 if (r < 0)
551 return r;
552 } else {
553
554 /* In the --user instance there's no sysinit.target,
555 * in that case require basic.target instead. */
556
557 r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true);
558 if (r < 0)
559 return r;
560 }
561
562 /* Second, if the rest of the base system is in the same
563 * transaction, order us after it, but do not pull it in or
564 * even require it. */
565 r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_BASIC_TARGET, NULL, true);
fccd44ec
KS		 566 if (r < 0)
567 return r;
a40eb732 568
cb4c247d 569 /* Third, add us in for normal shutdown. */
8545f7ce 570 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
a40eb732
LP		 571}
572
4dfc092a
LP		 573static void service_fix_output(Service *s) {
574 assert(s);
575
576 /* If nothing has been explicitly configured, patch default
577 * output in. If input is socket/tty we avoid this however,
578 * since in that case we want output to default to the same
579 * place as we read input from. */
580
581 if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
582 s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
583 s->exec_context.std_input == EXEC_INPUT_NULL)
1124fe6f 584 s->exec_context.std_error = UNIT(s)->manager->default_std_error;
4dfc092a
LP		 585
586 if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
587 s->exec_context.std_input == EXEC_INPUT_NULL)
1124fe6f 588 s->exec_context.std_output = UNIT(s)->manager->default_std_output;
4dfc092a
LP		 589}
590
45f06b34
LP		 591static int service_setup_bus_name(Service *s) {
592 int r;
593
594 assert(s);
595
596 if (!s->bus_name)
597 return 0;
598
222953e8
DR		 599 r = unit_add_dependency_by_name(UNIT(s), UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true);
600 if (r < 0)
601 return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m");
45f06b34
LP		 602
603 /* Regardless if kdbus is used or not, we always want to be ordered against dbus.socket if both are in the transaction. */
604 r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, SPECIAL_DBUS_SOCKET, NULL, true);
605 if (r < 0)
92bed462 606 return log_unit_error_errno(UNIT(s), r, "Failed to add dependency on " SPECIAL_DBUS_SOCKET ": %m");
45f06b34
LP		 607
608 r = unit_watch_bus_name(UNIT(s), s->bus_name);
609 if (r == -EEXIST)
610 return log_unit_error_errno(UNIT(s), r, "Two services allocated for the same bus name %s, refusing operation.", s->bus_name);
611 if (r < 0)
612 return log_unit_error_errno(UNIT(s), r, "Cannot watch bus name %s: %m", s->bus_name);
613
614 return 0;
615}
616
8545f7ce
LP		 617static int service_add_extras(Service *s) {
618 int r;
619
620 assert(s);
621
622 if (s->type == _SERVICE_TYPE_INVALID) {
623 /* Figure out a type automatically */
624 if (s->bus_name)
625 s->type = SERVICE_DBUS;
626 else if (s->exec_command[SERVICE_EXEC_START])
627 s->type = SERVICE_SIMPLE;
628 else
629 s->type = SERVICE_ONESHOT;
630 }
631
632 /* Oneshot services have disabled start timeout by default */
633 if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined)
36c16a7c 634 s->timeout_start_usec = USEC_INFINITY;
8545f7ce
LP		 635
636 service_fix_output(s);
637
638 r = unit_patch_contexts(UNIT(s));
639 if (r < 0)
640 return r;
641
642 r = unit_add_exec_dependencies(UNIT(s), &s->exec_context);
643 if (r < 0)
644 return r;
645
d79200e2 646 r = unit_set_default_slice(UNIT(s));
8545f7ce
LP		 647 if (r < 0)
648 return r;
649
650 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
651 s->notify_access = NOTIFY_MAIN;
652
653 if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
654 s->notify_access = NOTIFY_MAIN;
655
45f06b34
LP		 656 r = service_add_default_dependencies(s);
657 if (r < 0)
658 return r;
8545f7ce 659
45f06b34
LP		 660 r = service_setup_bus_name(s);
661 if (r < 0)
662 return r;
8545f7ce
LP		 663
664 return 0;
665}
666
e537352b 667static int service_load(Unit *u) {
e537352b 668 Service *s = SERVICE(u);
8bb2d17d 669 int r;
e537352b
LP		 670
671 assert(s);
1e2e8133 672
5cb5a6ff 673 /* Load a .service file */
c2756a68
LP		 674 r = unit_load_fragment(u);
675 if (r < 0)
5cb5a6ff
LP		 676 return r;
677
23a177ef 678 /* Still nothing found? Then let's give up */
ac155bb8 679 if (u->load_state == UNIT_STUB)
23a177ef 680 return -ENOENT;
034c6ed7 681
23a177ef 682 /* This is a new unit? Then let's add in some extras */
ac155bb8 683 if (u->load_state == UNIT_LOADED) {
c2756a68
LP		 684
685 /* We were able to load something, then let's add in
686 * the dropin directories. */
687 r = unit_load_dropin(u);
688 if (r < 0)
689 return r;
690
8545f7ce
LP		 691 /* This is a new unit? Then let's add in some
692 * extras */
693 r = service_add_extras(s);
598459ce
LP		 694 if (r < 0)
695 return r;
8e274523
LP		 696 }
697
243b1432 698 return service_verify(s);
034c6ed7
LP		 699}
700
87f0e418 701static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 702 ServiceExecCommand c;
87f0e418 703 Service *s = SERVICE(u);
47be870b 704 const char *prefix2;
5cb5a6ff
LP		 705
706 assert(s);
707
4c940960 708 prefix = strempty(prefix);
63c372cb 709 prefix2 = strjoina(prefix, "\t");
44d8db9e 710
5cb5a6ff 711 fprintf(f,
81a2b7ce 712 "%sService State: %s\n"
f42806df
LP		 713 "%sResult: %s\n"
714 "%sReload Result: %s\n"
81a2b7ce 715 "%sPermissionsStartOnly: %s\n"
8e274523 716 "%sRootDirectoryStartOnly: %s\n"
02ee865a 717 "%sRemainAfterExit: %s\n"
3185a36b 718 "%sGuessMainPID: %s\n"
c952c6ec 719 "%sType: %s\n"
2cf3143a 720 "%sRestart: %s\n"
308d72dc
LP		 721 "%sNotifyAccess: %s\n"
722 "%sNotifyState: %s\n",
81a2b7ce 723 prefix, service_state_to_string(s->state),
f42806df
LP		 724 prefix, service_result_to_string(s->result),
725 prefix, service_result_to_string(s->reload_result),
81a2b7ce 726 prefix, yes_no(s->permissions_start_only),
8e274523 727 prefix, yes_no(s->root_directory_start_only),
02ee865a 728 prefix, yes_no(s->remain_after_exit),
3185a36b 729 prefix, yes_no(s->guess_main_pid),
c952c6ec 730 prefix, service_type_to_string(s->type),
2cf3143a 731 prefix, service_restart_to_string(s->restart),
308d72dc
LP		 732 prefix, notify_access_to_string(s->notify_access),
733 prefix, notify_state_to_string(s->notify_state));
5cb5a6ff 734
70123e68
LP		 735 if (s->control_pid > 0)
736 fprintf(f,
ccd06097
ZJS		 737 "%sControl PID: "PID_FMT"\n",
738 prefix, s->control_pid);
70123e68
LP		 739
740 if (s->main_pid > 0)
741 fprintf(f,
ccd06097 742 "%sMain PID: "PID_FMT"\n"
6dfa5494
LP		 743 "%sMain PID Known: %s\n"
744 "%sMain PID Alien: %s\n",
ccd06097 745 prefix, s->main_pid,
6dfa5494
LP		 746 prefix, yes_no(s->main_pid_known),
747 prefix, yes_no(s->main_pid_alien));
70123e68 748
034c6ed7
LP		 749 if (s->pid_file)
750 fprintf(f,
751 "%sPIDFile: %s\n",
752 prefix, s->pid_file);
753
05e343b7
LP		 754 if (s->bus_name)
755 fprintf(f,
756 "%sBusName: %s\n"
757 "%sBus Name Good: %s\n",
758 prefix, s->bus_name,
759 prefix, yes_no(s->bus_name_good));
760
4819ff03 761 kill_context_dump(&s->kill_context, f, prefix);
5cb5a6ff
LP		 762 exec_context_dump(&s->exec_context, f, prefix);
763
e537352b 764 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
5cb5a6ff 765
44d8db9e
LP		 766 if (!s->exec_command[c])
767 continue;
768
40d50879 769 fprintf(f, "%s-> %s:\n",
94f04347 770 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 771
772 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 773 }
44d8db9e 774
8c47c732
LP		 775 if (s->status_text)
776 fprintf(f, "%sStatus Text: %s\n",
777 prefix, s->status_text);
a354329f 778
ece174c5 779 if (s->n_fd_store_max > 0)
a354329f
LP		 780 fprintf(f,
781 "%sFile Descriptor Store Max: %u\n"
782 "%sFile Descriptor Store Current: %u\n",
783 prefix, s->n_fd_store_max,
784 prefix, s->n_fd_store);
5cb5a6ff
LP		 785}
786
c5419d42 787static int service_load_pid_file(Service *s, bool may_warn) {
7fd1b19b 788 _cleanup_free_ char *k = NULL;
034c6ed7 789 int r;
5925dd3c 790 pid_t pid;
034c6ed7
LP		 791
792 assert(s);
793
034c6ed7 794 if (!s->pid_file)
13230d5d 795 return -ENOENT;
034c6ed7 796
117dcc57
ZJS		 797 r = read_one_line_file(s->pid_file, &k);
798 if (r < 0) {
c5419d42 799 if (may_warn)
f2341e0a 800 log_unit_info_errno(UNIT(s), r, "PID file %s not readable (yet?) after %s: %m", s->pid_file, service_state_to_string(s->state));
034c6ed7 801 return r;
5375410b 802 }
034c6ed7 803
5925dd3c 804 r = parse_pid(k, &pid);
bc41f93e
ZJS		 805 if (r < 0) {
806 if (may_warn)
f2341e0a 807 log_unit_info_errno(UNIT(s), r, "Failed to read PID from file %s: %m", s->pid_file);
5925dd3c 808 return r;
bc41f93e 809 }
406eaf93 810
9f5650ae 811 if (!pid_is_alive(pid)) {
c5419d42 812 if (may_warn)
f2341e0a 813 log_unit_info(UNIT(s), "PID "PID_FMT" read from file %s does not exist or is a zombie.", pid, s->pid_file);
e10c9985
YS		 814 return -ESRCH;
815 }
816
db01f8b3
MS		 817 if (s->main_pid_known) {
818 if (pid == s->main_pid)
819 return 0;
820
f2341e0a 821 log_unit_debug(UNIT(s), "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid);
8bb2d17d 822
db01f8b3
MS		 823 service_unwatch_main_pid(s);
824 s->main_pid_known = false;
3a111838 825 } else
f2341e0a 826 log_unit_debug(UNIT(s), "Main PID loaded: "PID_FMT, pid);
db01f8b3 827
117dcc57
ZJS		 828 r = service_set_main_pid(s, pid);
829 if (r < 0)
16f6025e
LP		 830 return r;
831
117dcc57 832 r = unit_watch_pid(UNIT(s), pid);
bc41f93e 833 if (r < 0) {
5925dd3c 834 /* FIXME: we need to do something here */
f2341e0a 835 log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" for service: %m", pid);
5925dd3c 836 return r;
bc41f93e 837 }
034c6ed7
LP		 838
839 return 0;
840}
841
783e05d6 842static void service_search_main_pid(Service *s) {
efdb0237 843 pid_t pid = 0;
4fbf50b3
LP		 844 int r;
845
846 assert(s);
847
3185a36b
LP		 848 /* If we know it anyway, don't ever fallback to unreliable
849 * heuristics */
4fbf50b3 850 if (s->main_pid_known)
783e05d6 851 return;
4fbf50b3 852
3185a36b 853 if (!s->guess_main_pid)
783e05d6 854 return;
3185a36b 855
4fbf50b3
LP		 856 assert(s->main_pid <= 0);
857
783e05d6
ZJS		 858 if (unit_search_main_pid(UNIT(s), &pid) < 0)
859 return;
4fbf50b3 860
f2341e0a 861 log_unit_debug(UNIT(s), "Main PID guessed: "PID_FMT, pid);
783e05d6
ZJS		 862 if (service_set_main_pid(s, pid) < 0)
863 return;
4fbf50b3 864
117dcc57 865 r = unit_watch_pid(UNIT(s), pid);
783e05d6 866 if (r < 0)
4fbf50b3 867 /* FIXME: we need to do something here */
f2341e0a 868 log_unit_warning_errno(UNIT(s), r, "Failed to watch PID "PID_FMT" from: %m", pid);
4fbf50b3
LP		 869}
870
034c6ed7
LP		 871static void service_set_state(Service *s, ServiceState state) {
872 ServiceState old_state;
e056b01d 873 const UnitActiveState *table;
842129f5 874
5cb5a6ff
LP		 875 assert(s);
876
e056b01d
LP		 877 table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
878
034c6ed7 879 old_state = s->state;
5cb5a6ff 880 s->state = state;
034c6ed7 881
3a111838
MS		 882 service_unwatch_pid_file(s);
883
842129f5
LP		 884 if (!IN_SET(state,
885 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
36c16a7c 886 SERVICE_RUNNING,
842129f5 887 SERVICE_RELOAD,
57614eb1 888 SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
842129f5
LP		 889 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL,
890 SERVICE_AUTO_RESTART))
718db961 891 s->timer_event_source = sd_event_source_unref(s->timer_event_source);
034c6ed7 892
842129f5
LP		 893 if (!IN_SET(state,
894 SERVICE_START, SERVICE_START_POST,
895 SERVICE_RUNNING, SERVICE_RELOAD,
57614eb1 896 SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
bf108e55 897 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
5e94833f 898 service_unwatch_main_pid(s);
867b3b7d
LP		 899 s->main_command = NULL;
900 }
034c6ed7 901
842129f5
LP		 902 if (!IN_SET(state,
903 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
904 SERVICE_RELOAD,
57614eb1 905 SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
842129f5 906 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
5e94833f 907 service_unwatch_control_pid(s);
034c6ed7 908 s->control_command = NULL;
a16e1123 909 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
e537352b 910 }
034c6ed7 911
a911bb9a
LP		 912 if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
913 unit_unwatch_all_pids(UNIT(s));
914
842129f5
LP		 915 if (!IN_SET(state,
916 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
917 SERVICE_RUNNING, SERVICE_RELOAD,
57614eb1
LP		 918 SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
919 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) &&
5cc3985e 920 !(state == SERVICE_DEAD && UNIT(s)->job))
4f2d528d
LP		 921 service_close_socket_fd(s);
922
7596e9e1 923 if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
a6927d7f
MO		 924 service_stop_watchdog(s);
925
f6023656
LP		 926 /* For the inactive states unit_notify() will trim the cgroup,
927 * but for exit we have to do that ourselves... */
2c289ea8 928 if (state == SERVICE_EXITED && !MANAGER_IS_RELOADING(UNIT(s)->manager))
efdb0237 929 unit_prune_cgroup(UNIT(s));
f6023656 930
9cd86184
OB		 931 /* For remain_after_exit services, let's see if we can "release" the
932 * hold on the console, since unit_notify() only does that in case of
933 * change of state */
f49650ce
LP		 934 if (state == SERVICE_EXITED &&
935 s->remain_after_exit &&
9cd86184 936 UNIT(s)->manager->n_on_console > 0) {
f49650ce
LP		 937
938 ExecContext *ec;
939
940 ec = unit_get_exec_context(UNIT(s));
9cd86184
OB		 941 if (ec && exec_context_may_touch_console(ec)) {
942 Manager *m = UNIT(s)->manager;
943
313cefa1 944 m->n_on_console--;
9cd86184
OB		 945 if (m->n_on_console == 0)
946 /* unset no_console_output flag, since the console is free */
947 m->no_console_output = false;
948 }
949 }
950
e537352b 951 if (old_state != state)
f2341e0a 952 log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state));
acbb0225 953
e056b01d 954 unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
034c6ed7
LP		 955}
956
36c16a7c
LP		 957static usec_t service_coldplug_timeout(Service *s) {
958 assert(s);
959
960 switch (s->deserialized_state) {
961
962 case SERVICE_START_PRE:
963 case SERVICE_START:
964 case SERVICE_START_POST:
965 case SERVICE_RELOAD:
966 return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_start_usec);
967
968 case SERVICE_RUNNING:
969 return usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec);
970
971 case SERVICE_STOP:
972 case SERVICE_STOP_SIGABRT:
973 case SERVICE_STOP_SIGTERM:
974 case SERVICE_STOP_SIGKILL:
975 case SERVICE_STOP_POST:
976 case SERVICE_FINAL_SIGTERM:
977 case SERVICE_FINAL_SIGKILL:
978 return usec_add(UNIT(s)->state_change_timestamp.monotonic, s->timeout_stop_usec);
979
980 case SERVICE_AUTO_RESTART:
981 return usec_add(UNIT(s)->inactive_enter_timestamp.monotonic, s->restart_usec);
982
983 default:
984 return USEC_INFINITY;
985 }
986}
987
be847e82 988static int service_coldplug(Unit *u) {
a16e1123
LP		 989 Service *s = SERVICE(u);
990 int r;
991
992 assert(s);
993 assert(s->state == SERVICE_DEAD);
994
930d2838
LP		 995 if (s->deserialized_state == s->state)
996 return 0;
6c12b52e 997
36c16a7c
LP		 998 r = service_arm_timer(s, service_coldplug_timeout(s));
999 if (r < 0)
1000 return r;
a911bb9a 1001
930d2838
LP		 1002 if (s->main_pid > 0 &&
1003 pid_is_unwaited(s->main_pid) &&
1004 ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) ||
1005 IN_SET(s->deserialized_state,
1006 SERVICE_START, SERVICE_START_POST,
1007 SERVICE_RUNNING, SERVICE_RELOAD,
1008 SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
1009 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) {
1010 r = unit_watch_pid(UNIT(s), s->main_pid);
1011 if (r < 0)
1012 return r;
1013 }
bb242b7b 1014
930d2838
LP		 1015 if (s->control_pid > 0 &&
1016 pid_is_unwaited(s->control_pid) &&
1017 IN_SET(s->deserialized_state,
1018 SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
1019 SERVICE_RELOAD,
1020 SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
1021 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
1022 r = unit_watch_pid(UNIT(s), s->control_pid);
1023 if (r < 0)
1024 return r;
a16e1123 1025 }
92c1622e 1026
930d2838
LP		 1027 if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
1028 unit_watch_all_pids(UNIT(s));
1029
1030 if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1031 service_start_watchdog(s);
1032
1033 service_set_state(s, s->deserialized_state);
a16e1123
LP		 1034 return 0;
1035}
1036
8dd4c05b
LP		 1037static int service_collect_fds(Service *s, int **fds, char ***fd_names) {
1038 _cleanup_strv_free_ char **rfd_names = NULL;
a354329f 1039 _cleanup_free_ int *rfds = NULL;
8dd4c05b 1040 int rn_fds = 0, r;
44d8db9e
LP		 1041
1042 assert(s);
1043 assert(fds);
8dd4c05b 1044 assert(fd_names);
44d8db9e 1045
8dd4c05b 1046 if (s->socket_fd >= 0) {
6cf6bbc2 1047
8dd4c05b 1048 /* Pass the per-connection socket */
57020a3a 1049
8dd4c05b
LP		 1050 rfds = new(int, 1);
1051 if (!rfds)
1052 return -ENOMEM;
1053 rfds[0] = s->socket_fd;
57020a3a 1054
8dd4c05b
LP		 1055 rfd_names = strv_new("connection", NULL);
1056 if (!rfd_names)
1057 return -ENOMEM;
44d8db9e 1058
8dd4c05b
LP		 1059 rn_fds = 1;
1060 } else {
1061 Iterator i;
1062 Unit *u;
44d8db9e 1063
8dd4c05b 1064 /* Pass all our configured sockets for singleton services */
44d8db9e 1065
8dd4c05b
LP		 1066 SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
1067 _cleanup_free_ int *cfds = NULL;
1068 Socket *sock;
1069 int cn_fds;
44d8db9e 1070
8dd4c05b
LP		 1071 if (u->type != UNIT_SOCKET)
1072 continue;
44d8db9e 1073
8dd4c05b 1074 sock = SOCKET(u);
a354329f 1075
8dd4c05b
LP		 1076 cn_fds = socket_collect_fds(sock, &cfds);
1077 if (cn_fds < 0)
1078 return cn_fds;
44d8db9e 1079
8dd4c05b
LP		 1080 if (cn_fds <= 0)
1081 continue;
79c7626d 1082
8dd4c05b
LP		 1083 if (!rfds) {
1084 rfds = cfds;
1085 rn_fds = cn_fds;
1086
1087 cfds = NULL;
1088 } else {
1089 int *t;
1090
1091 t = realloc(rfds, (rn_fds + cn_fds) * sizeof(int));
1092 if (!t)
1093 return -ENOMEM;
1094
1095 memcpy(t + rn_fds, cfds, cn_fds * sizeof(int));
1096
1097 rfds = t;
1098 rn_fds += cn_fds;
1099 }
1100
1101 r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds);
1102 if (r < 0)
1103 return r;
44d8db9e
LP		 1104 }
1105 }
1106
a354329f
LP		 1107 if (s->n_fd_store > 0) {
1108 ServiceFDStore *fs;
8dd4c05b 1109 char **nl;
a354329f
LP		 1110 int *t;
1111
1112 t = realloc(rfds, (rn_fds + s->n_fd_store) * sizeof(int));
1113 if (!t)
1114 return -ENOMEM;
1115
1116 rfds = t;
8dd4c05b
LP		 1117
1118 nl = realloc(rfd_names, (rn_fds + s->n_fd_store + 1) * sizeof(char*));
1119 if (!nl)
1120 return -ENOMEM;
1121
1122 rfd_names = nl;
1123
1124 LIST_FOREACH(fd_store, fs, s->fd_store) {
1125 rfds[rn_fds] = fs->fd;
1126 rfd_names[rn_fds] = strdup(strempty(fs->fdname));
1127 if (!rfd_names[rn_fds])
1128 return -ENOMEM;
1129
1130 rn_fds++;
1131 }
1132
1133 rfd_names[rn_fds] = NULL;
a354329f
LP		 1134 }
1135
44d8db9e 1136 *fds = rfds;
8dd4c05b 1137 *fd_names = rfd_names;
3e33402a 1138
a354329f 1139 rfds = NULL;
8dd4c05b 1140 rfd_names = NULL;
79c7626d
LP		 1141
1142 return rn_fds;
44d8db9e
LP		 1143}
1144
81a2b7ce
LP		 1145static int service_spawn(
1146 Service *s,
1147 ExecCommand *c,
21b2ce39 1148 usec_t timeout,
81a2b7ce
LP		 1149 bool pass_fds,
1150 bool apply_permissions,
1151 bool apply_chroot,
1e3ad081 1152 bool apply_tty_stdin,
ecedd90f 1153 bool is_control,
81a2b7ce
LP		 1154 pid_t *_pid) {
1155
8dd4c05b 1156 _cleanup_strv_free_ char **argv = NULL, **final_env = NULL, **our_env = NULL, **fd_names = NULL;
8dd4c05b
LP		 1157 _cleanup_free_ int *fds = NULL;
1158 unsigned n_fds = 0, n_env = 0;
4ad49000 1159 const char *path;
8dd4c05b
LP		 1160 pid_t pid;
1161
9fa95f85 1162 ExecParameters exec_params = {
a34ceba6
LP		 1163 .apply_permissions = apply_permissions,
1164 .apply_chroot = apply_chroot,
1165 .apply_tty_stdin = apply_tty_stdin,
a34ceba6
LP		 1166 .stdin_fd = -1,
1167 .stdout_fd = -1,
1168 .stderr_fd = -1,
9fa95f85 1169 };
034c6ed7 1170
8dd4c05b
LP		 1171 int r;
1172
034c6ed7
LP		 1173 assert(s);
1174 assert(c);
1175 assert(_pid);
1176
5ad096b3
LP		 1177 (void) unit_realize_cgroup(UNIT(s));
1178 if (s->reset_cpu_usage) {
1179 (void) unit_reset_cpu_usage(UNIT(s));
1180 s->reset_cpu_usage = false;
1181 }
4ad49000 1182
613b411c
LP		 1183 r = unit_setup_exec_runtime(UNIT(s));
1184 if (r < 0)
36c16a7c 1185 return r;
613b411c 1186
6cf6bbc2
LP		 1187 if (pass_fds ||
1188 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1189 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1190 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1191
8dd4c05b
LP		 1192 r = service_collect_fds(s, &fds, &fd_names);
1193 if (r < 0)
36c16a7c 1194 return r;
6cf6bbc2 1195
8dd4c05b 1196 n_fds = r;
4f2d528d 1197 }
44d8db9e 1198
36c16a7c
LP		 1199 r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), timeout));
1200 if (r < 0)
1201 return r;
034c6ed7 1202
19f6d710
LP		 1203 r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
1204 if (r < 0)
36c16a7c 1205 return r;
9e2f7c11 1206
3b1c5241 1207 our_env = new0(char*, 6);
36c16a7c
LP		 1208 if (!our_env)
1209 return -ENOMEM;
c952c6ec 1210
a158dbf1 1211 if (is_control ? s->notify_access == NOTIFY_ALL : s->notify_access != NOTIFY_NONE)
36c16a7c
LP		 1212 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0)
1213 return -ENOMEM;
c952c6ec 1214
2105e76a 1215 if (s->main_pid > 0)
36c16a7c
LP		 1216 if (asprintf(our_env + n_env++, "MAINPID="PID_FMT, s->main_pid) < 0)
1217 return -ENOMEM;
2105e76a 1218
463d0d15 1219 if (!MANAGER_IS_SYSTEM(UNIT(s)->manager))
36c16a7c
LP		 1220 if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid()) < 0)
1221 return -ENOMEM;
97ae63e2 1222
8dd4c05b 1223 if (s->socket_fd >= 0) {
3b1c5241
SL		 1224 union sockaddr_union sa;
1225 socklen_t salen = sizeof(sa);
1226
1227 r = getpeername(s->socket_fd, &sa.sa, &salen);
36c16a7c
LP		 1228 if (r < 0)
1229 return -errno;
3b1c5241
SL		 1230
1231 if (IN_SET(sa.sa.sa_family, AF_INET, AF_INET6)) {
1232 _cleanup_free_ char *addr = NULL;
1233 char *t;
1234 int port;
1235
1236 r = sockaddr_pretty(&sa.sa, salen, true, false, &addr);
1237 if (r < 0)
36c16a7c 1238 return r;
3b1c5241
SL		 1239
1240 t = strappend("REMOTE_ADDR=", addr);
36c16a7c
LP		 1241 if (!t)
1242 return -ENOMEM;
3b1c5241
SL		 1243 our_env[n_env++] = t;
1244
1245 port = sockaddr_port(&sa.sa);
36c16a7c
LP		 1246 if (port < 0)
1247 return port;
3b1c5241 1248
36c16a7c
LP		 1249 if (asprintf(&t, "REMOTE_PORT=%u", port) < 0)
1250 return -ENOMEM;
3b1c5241
SL		 1251 our_env[n_env++] = t;
1252 }
1253 }
1254
97ae63e2 1255 final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
36c16a7c
LP		 1256 if (!final_env)
1257 return -ENOMEM;
c952c6ec 1258
4ad49000 1259 if (is_control && UNIT(s)->cgroup_path) {
63c372cb 1260 path = strjoina(UNIT(s)->cgroup_path, "/control");
ac5b0c13 1261 (void) cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
4ad49000
LP		 1262 } else
1263 path = UNIT(s)->cgroup_path;
1264
9fa95f85
DM		 1265 exec_params.argv = argv;
1266 exec_params.fds = fds;
8dd4c05b 1267 exec_params.fd_names = fd_names;
9fa95f85
DM		 1268 exec_params.n_fds = n_fds;
1269 exec_params.environment = final_env;
1270 exec_params.confirm_spawn = UNIT(s)->manager->confirm_spawn;
1271 exec_params.cgroup_supported = UNIT(s)->manager->cgroup_supported;
1272 exec_params.cgroup_path = path;
a931ad47 1273 exec_params.cgroup_delegate = s->cgroup_context.delegate;
9fa95f85 1274 exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(s)->manager);
9fa95f85 1275 exec_params.watchdog_usec = s->watchdog_usec;
a34ceba6 1276 exec_params.selinux_context_net = s->socket_fd_selinux_context_net;
9fa95f85
DM		 1277 if (s->type == SERVICE_IDLE)
1278 exec_params.idle_pipe = UNIT(s)->manager->idle_pipe;
a34ceba6
LP		 1279 exec_params.stdin_fd = s->stdin_fd;
1280 exec_params.stdout_fd = s->stdout_fd;
1281 exec_params.stderr_fd = s->stderr_fd;
9fa95f85 1282
f2341e0a
LP		 1283 r = exec_spawn(UNIT(s),
1284 c,
9e2f7c11 1285 &s->exec_context,
9fa95f85 1286 &exec_params,
613b411c 1287 s->exec_runtime,
9e2f7c11 1288 &pid);
9e2f7c11 1289 if (r < 0)
36c16a7c 1290 return r;
034c6ed7 1291
117dcc57
ZJS		 1292 r = unit_watch_pid(UNIT(s), pid);
1293 if (r < 0)
034c6ed7 1294 /* FIXME: we need to do something here */
36c16a7c 1295 return r;
034c6ed7
LP		 1296
1297 *_pid = pid;
1298
5cb5a6ff 1299 return 0;
034c6ed7
LP		 1300}
1301
80876c20
LP		 1302static int main_pid_good(Service *s) {
1303 assert(s);
1304
1305 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1306 * don't know */
1307
fc08079e 1308 /* If we know the pid file, then let's just check if it is
80876c20 1309 * still valid */
6dfa5494
LP		 1310 if (s->main_pid_known) {
1311
1312 /* If it's an alien child let's check if it is still
1313 * alive ... */
62220cf7 1314 if (s->main_pid_alien && s->main_pid > 0)
9f5650ae 1315 return pid_is_alive(s->main_pid);
6dfa5494
LP		 1316
1317 /* .. otherwise assume we'll get a SIGCHLD for it,
1318 * which we really should wait for to collect exit
1319 * status and code */
80876c20 1320 return s->main_pid > 0;
6dfa5494 1321 }
80876c20
LP		 1322
1323 /* We don't know the pid */
1324 return -EAGAIN;
1325}
1326
44a6b1b6 1327_pure_ static int control_pid_good(Service *s) {
80876c20
LP		 1328 assert(s);
1329
1330 return s->control_pid > 0;
1331}
1332
1333static int cgroup_good(Service *s) {
1334 int r;
1335
1336 assert(s);
1337
4ad49000
LP		 1338 if (!UNIT(s)->cgroup_path)
1339 return 0;
1340
6f883237 1341 r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path);
117dcc57 1342 if (r < 0)
80876c20
LP		 1343 return r;
1344
1345 return !r;
1346}
1347
a509f0e6
LP		 1348static bool service_shall_restart(Service *s) {
1349 assert(s);
1350
1351 /* Don't restart after manual stops */
1352 if (s->forbid_restart)
1353 return false;
1354
1355 /* Never restart if this is configured as special exception */
1356 if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status))
1357 return false;
1358
1359 /* Restart if the exit code/status are configured as restart triggers */
1360 if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status))
1361 return true;
1362
1363 switch (s->restart) {
1364
1365 case SERVICE_RESTART_NO:
1366 return false;
1367
1368 case SERVICE_RESTART_ALWAYS:
1369 return true;
1370
1371 case SERVICE_RESTART_ON_SUCCESS:
1372 return s->result == SERVICE_SUCCESS;
1373
1374 case SERVICE_RESTART_ON_FAILURE:
1375 return s->result != SERVICE_SUCCESS;
1376
1377 case SERVICE_RESTART_ON_ABNORMAL:
1378 return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE);
1379
1380 case SERVICE_RESTART_ON_WATCHDOG:
1381 return s->result == SERVICE_FAILURE_WATCHDOG;
1382
1383 case SERVICE_RESTART_ON_ABORT:
1384 return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP);
1385
1386 default:
1387 assert_not_reached("unknown restart setting");
1388 }
1389}
1390
f42806df 1391static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
034c6ed7
LP		 1392 int r;
1393 assert(s);
1394
f42806df
LP		 1395 if (f != SERVICE_SUCCESS)
1396 s->result = f;
034c6ed7 1397
0c7f15b3
MS		 1398 service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
1399
2928b0a8 1400 if (s->result != SERVICE_SUCCESS) {
f2341e0a 1401 log_unit_warning(UNIT(s), "Failed with result '%s'.", service_result_to_string(s->result));
6bf0f408 1402 failure_action(UNIT(s)->manager, s->failure_action, UNIT(s)->reboot_arg);
2928b0a8 1403 }
93ae25e6 1404
a509f0e6 1405 if (allow_restart && service_shall_restart(s)) {
034c6ed7 1406
36c16a7c 1407 r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec));
f42806df 1408 if (r < 0)
034c6ed7
LP		 1409 goto fail;
1410
1411 service_set_state(s, SERVICE_AUTO_RESTART);
0c7f15b3 1412 }
034c6ed7 1413
f2341e0a 1414 /* The next restart might not be a manual stop, hence reset the flag indicating manual stops */
47342320
LP		 1415 s->forbid_restart = false;
1416
e66cf1a3 1417 /* We want fresh tmpdirs in case service is started again immediately */
613b411c
LP		 1418 exec_runtime_destroy(s->exec_runtime);
1419 s->exec_runtime = exec_runtime_unref(s->exec_runtime);
c17ec25e 1420
e66cf1a3
LP		 1421 /* Also, remove the runtime directory in */
1422 exec_context_destroy_runtime_directory(&s->exec_context, manager_get_runtime_prefix(UNIT(s)->manager));
1423
9285c9ff
LN		 1424 /* Try to delete the pid file. At this point it will be
1425 * out-of-date, and some software might be confused by it, so
1426 * let's remove it. */
1427 if (s->pid_file)
fabab190 1428 (void) unlink(s->pid_file);
9285c9ff 1429
034c6ed7
LP		 1430 return;
1431
1432fail:
f2341e0a 1433 log_unit_warning_errno(UNIT(s), r, "Failed to run install restart timer: %m");
f42806df 1434 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
034c6ed7
LP		 1435}
1436
f42806df 1437static void service_enter_stop_post(Service *s, ServiceResult f) {
034c6ed7
LP		 1438 int r;
1439 assert(s);
1440
f42806df
LP		 1441 if (f != SERVICE_SUCCESS)
1442 s->result = f;
034c6ed7 1443
5e94833f 1444 service_unwatch_control_pid(s);
a911bb9a 1445 unit_watch_all_pids(UNIT(s));
5e94833f 1446
117dcc57
ZJS		 1447 s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST];
1448 if (s->control_command) {
867b3b7d
LP		 1449 s->control_command_id = SERVICE_EXEC_STOP_POST;
1450
ecedd90f
LP		 1451 r = service_spawn(s,
1452 s->control_command,
21b2ce39 1453 s->timeout_stop_usec,
ecedd90f
LP		 1454 false,
1455 !s->permissions_start_only,
1456 !s->root_directory_start_only,
1457 true,
ecedd90f
LP		 1458 true,
1459 &s->control_pid);
1460 if (r < 0)
034c6ed7
LP		 1461 goto fail;
1462
80876c20
LP		 1463 service_set_state(s, SERVICE_STOP_POST);
1464 } else
ac84d1fb 1465 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
034c6ed7
LP		 1466
1467 return;
1468
1469fail:
f2341e0a 1470 log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop-post' task: %m");
f42806df 1471 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
034c6ed7
LP		 1472}
1473
4940c0b0
LP		 1474static int state_to_kill_operation(ServiceState state) {
1475 switch (state) {
1476
1477 case SERVICE_STOP_SIGABRT:
1478 return KILL_ABORT;
1479
1480 case SERVICE_STOP_SIGTERM:
1481 case SERVICE_FINAL_SIGTERM:
1482 return KILL_TERMINATE;
1483
1484 case SERVICE_STOP_SIGKILL:
1485 case SERVICE_FINAL_SIGKILL:
1486 return KILL_KILL;
1487
1488 default:
1489 return _KILL_OPERATION_INVALID;
1490 }
1491}
1492
f42806df 1493static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
034c6ed7 1494 int r;
034c6ed7
LP		 1495
1496 assert(s);
1497
f42806df
LP		 1498 if (f != SERVICE_SUCCESS)
1499 s->result = f;
034c6ed7 1500
a911bb9a
LP		 1501 unit_watch_all_pids(UNIT(s));
1502
cd2086fe
LP		 1503 r = unit_kill_context(
1504 UNIT(s),
1505 &s->kill_context,
4940c0b0 1506 state_to_kill_operation(state),
cd2086fe
LP		 1507 s->main_pid,
1508 s->control_pid,
1509 s->main_pid_alien);
ac84d1fb 1510
cd2086fe
LP		 1511 if (r < 0)
1512 goto fail;
034c6ed7 1513
cd2086fe 1514 if (r > 0) {
36c16a7c
LP		 1515 r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec));
1516 if (r < 0)
1517 goto fail;
d6ea93e3 1518
80876c20 1519 service_set_state(s, state);
1db0db4b 1520 } else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM) && s->kill_context.send_sigkill)
ac84d1fb 1521 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS);
1db0db4b 1522 else if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL))
f42806df 1523 service_enter_stop_post(s, SERVICE_SUCCESS);
1db0db4b 1524 else if (state == SERVICE_FINAL_SIGTERM && s->kill_context.send_sigkill)
ac84d1fb 1525 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS);
80876c20 1526 else
f42806df 1527 service_enter_dead(s, SERVICE_SUCCESS, true);
034c6ed7
LP		 1528
1529 return;
1530
1531fail:
f2341e0a 1532 log_unit_warning_errno(UNIT(s), r, "Failed to kill processes: %m");
034c6ed7 1533
a00973af 1534 if (IN_SET(state, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL))
f42806df 1535 service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
034c6ed7 1536 else
f42806df 1537 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
034c6ed7
LP		 1538}
1539
308d72dc
LP		 1540static void service_enter_stop_by_notify(Service *s) {
1541 assert(s);
1542
1543 unit_watch_all_pids(UNIT(s));
1544
36c16a7c 1545 service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_stop_usec));
308d72dc 1546
6041a7ee
MS		 1547 /* The service told us it's stopping, so it's as if we SIGTERM'd it. */
1548 service_set_state(s, SERVICE_STOP_SIGTERM);
308d72dc
LP		 1549}
1550
f42806df 1551static void service_enter_stop(Service *s, ServiceResult f) {
034c6ed7 1552 int r;
5925dd3c 1553
034c6ed7
LP		 1554 assert(s);
1555
f42806df
LP		 1556 if (f != SERVICE_SUCCESS)
1557 s->result = f;
034c6ed7 1558
5e94833f 1559 service_unwatch_control_pid(s);
a911bb9a 1560 unit_watch_all_pids(UNIT(s));
5e94833f 1561
117dcc57
ZJS		 1562 s->control_command = s->exec_command[SERVICE_EXEC_STOP];
1563 if (s->control_command) {
867b3b7d
LP		 1564 s->control_command_id = SERVICE_EXEC_STOP;
1565
ecedd90f
LP		 1566 r = service_spawn(s,
1567 s->control_command,
21b2ce39 1568 s->timeout_stop_usec,
ecedd90f
LP		 1569 false,
1570 !s->permissions_start_only,
1571 !s->root_directory_start_only,
1572 false,
ecedd90f
LP		 1573 true,
1574 &s->control_pid);
1575 if (r < 0)
034c6ed7
LP		 1576 goto fail;
1577
80876c20
LP		 1578 service_set_state(s, SERVICE_STOP);
1579 } else
f42806df 1580 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
034c6ed7
LP		 1581
1582 return;
1583
1584fail:
f2341e0a 1585 log_unit_warning_errno(UNIT(s), r, "Failed to run 'stop' task: %m");
f42806df 1586 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
034c6ed7
LP		 1587}
1588
957c3cf9
LP		 1589static bool service_good(Service *s) {
1590 int main_pid_ok;
1591 assert(s);
1592
1593 if (s->type == SERVICE_DBUS && !s->bus_name_good)
1594 return false;
1595
1596 main_pid_ok = main_pid_good(s);
1597 if (main_pid_ok > 0) /* It's alive */
1598 return true;
1599 if (main_pid_ok == 0) /* It's dead */
1600 return false;
1601
1602 /* OK, we don't know anything about the main PID, maybe
1603 * because there is none. Let's check the control group
1604 * instead. */
1605
1606 return cgroup_good(s) != 0;
1607}
1608
f42806df 1609static void service_enter_running(Service *s, ServiceResult f) {
80876c20
LP		 1610 assert(s);
1611
f42806df
LP		 1612 if (f != SERVICE_SUCCESS)
1613 s->result = f;
80876c20 1614
089b64d5
LP		 1615 service_unwatch_control_pid(s);
1616
957c3cf9 1617 if (service_good(s)) {
308d72dc
LP		 1618
1619 /* If there are any queued up sd_notify()
1620 * notifications, process them now */
1621 if (s->notify_state == NOTIFY_RELOADING)
1622 service_enter_reload_by_notify(s);
1623 else if (s->notify_state == NOTIFY_STOPPING)
1624 service_enter_stop_by_notify(s);
36c16a7c 1625 else {
308d72dc 1626 service_set_state(s, SERVICE_RUNNING);
36c16a7c
LP		 1627 service_arm_timer(s, usec_add(UNIT(s)->active_enter_timestamp.monotonic, s->runtime_max_usec));
1628 }
308d72dc
LP		 1629
1630 } else if (s->remain_after_exit)
80876c20
LP		 1631 service_set_state(s, SERVICE_EXITED);
1632 else
f42806df 1633 service_enter_stop(s, SERVICE_SUCCESS);
80876c20
LP		 1634}
1635
034c6ed7
LP		 1636static void service_enter_start_post(Service *s) {
1637 int r;
1638 assert(s);
1639
5e94833f 1640 service_unwatch_control_pid(s);
842129f5 1641 service_reset_watchdog(s);
bb242b7b 1642
117dcc57
ZJS		 1643 s->control_command = s->exec_command[SERVICE_EXEC_START_POST];
1644 if (s->control_command) {
867b3b7d
LP		 1645 s->control_command_id = SERVICE_EXEC_START_POST;
1646
ecedd90f
LP		 1647 r = service_spawn(s,
1648 s->control_command,
21b2ce39 1649 s->timeout_start_usec,
ecedd90f
LP		 1650 false,
1651 !s->permissions_start_only,
1652 !s->root_directory_start_only,
1653 false,
ecedd90f
LP		 1654 true,
1655 &s->control_pid);
1656 if (r < 0)
034c6ed7
LP		 1657 goto fail;
1658
80876c20
LP		 1659 service_set_state(s, SERVICE_START_POST);
1660 } else
f42806df 1661 service_enter_running(s, SERVICE_SUCCESS);
034c6ed7
LP		 1662
1663 return;
1664
1665fail:
f2341e0a 1666 log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-post' task: %m");
f42806df 1667 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
034c6ed7
LP		 1668}
1669
4ad49000
LP		 1670static void service_kill_control_processes(Service *s) {
1671 char *p;
1672
1673 if (!UNIT(s)->cgroup_path)
1674 return;
1675
63c372cb 1676 p = strjoina(UNIT(s)->cgroup_path, "/control");
1d98fef1 1677 cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, CGROUP_SIGCONT|CGROUP_IGNORE_SELF|CGROUP_REMOVE, NULL, NULL, NULL);
4ad49000
LP		 1678}
1679
034c6ed7 1680static void service_enter_start(Service *s) {
4ad49000 1681 ExecCommand *c;
36c16a7c 1682 usec_t timeout;
034c6ed7
LP		 1683 pid_t pid;
1684 int r;
1685
1686 assert(s);
1687
41efeaec
LP		 1688 service_unwatch_control_pid(s);
1689 service_unwatch_main_pid(s);
80876c20 1690
8f53a7b8
LP		 1691 /* We want to ensure that nobody leaks processes from
1692 * START_PRE here, so let's go on a killing spree, People
1693 * should not spawn long running processes from START_PRE. */
4ad49000 1694 service_kill_control_processes(s);
8f53a7b8 1695
867b3b7d
LP		 1696 if (s->type == SERVICE_FORKING) {
1697 s->control_command_id = SERVICE_EXEC_START;
1698 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
1699
1700 s->main_command = NULL;
1701 } else {
1702 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1703 s->control_command = NULL;
1704
1705 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
1706 }
34e9ba66 1707
96fb8242
LP		 1708 if (!c) {
1709 assert(s->type == SERVICE_ONESHOT);
1710 service_enter_start_post(s);
1711 return;
1712 }
1713
36c16a7c
LP		 1714 if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE))
1715 /* For simple + idle this is the main process. We don't apply any timeout here, but
1716 * service_enter_running() will later apply the .runtime_max_usec timeout. */
1717 timeout = USEC_INFINITY;
1718 else
1719 timeout = s->timeout_start_usec;
1720
ecedd90f
LP		 1721 r = service_spawn(s,
1722 c,
36c16a7c 1723 timeout,
ecedd90f
LP		 1724 true,
1725 true,
1726 true,
1727 true,
ecedd90f
LP		 1728 false,
1729 &pid);
1730 if (r < 0)
034c6ed7
LP		 1731 goto fail;
1732
36c16a7c 1733 if (IN_SET(s->type, SERVICE_SIMPLE, SERVICE_IDLE)) {
034c6ed7
LP		 1734 /* For simple services we immediately start
1735 * the START_POST binaries. */
1736
5925dd3c 1737 service_set_main_pid(s, pid);
034c6ed7
LP		 1738 service_enter_start_post(s);
1739
1740 } else if (s->type == SERVICE_FORKING) {
1741
1742 /* For forking services we wait until the start
1743 * process exited. */
1744
e55224ca 1745 s->control_pid = pid;
80876c20
LP		 1746 service_set_state(s, SERVICE_START);
1747
36c16a7c 1748 } else if (IN_SET(s->type, SERVICE_ONESHOT, SERVICE_DBUS, SERVICE_NOTIFY)) {
7d55e835 1749
34e9ba66 1750 /* For oneshot services we wait until the start
7d55e835
LP		 1751 * process exited, too, but it is our main process. */
1752
05e343b7 1753 /* For D-Bus services we know the main pid right away,
8c47c732
LP		 1754 * but wait for the bus name to appear on the
1755 * bus. Notify services are similar. */
05e343b7 1756
5925dd3c 1757 service_set_main_pid(s, pid);
80876c20 1758 service_set_state(s, SERVICE_START);
034c6ed7
LP		 1759 } else
1760 assert_not_reached("Unknown service type");
1761
1762 return;
1763
1764fail:
f2341e0a 1765 log_unit_warning_errno(UNIT(s), r, "Failed to run 'start' task: %m");
f42806df 1766 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
034c6ed7
LP		 1767}
1768
1769static void service_enter_start_pre(Service *s) {
1770 int r;
1771
1772 assert(s);
1773
5e94833f
LP		 1774 service_unwatch_control_pid(s);
1775
117dcc57
ZJS		 1776 s->control_command = s->exec_command[SERVICE_EXEC_START_PRE];
1777 if (s->control_command) {
8f53a7b8
LP		 1778 /* Before we start anything, let's clear up what might
1779 * be left from previous runs. */
4ad49000 1780 service_kill_control_processes(s);
8f53a7b8 1781
867b3b7d
LP		 1782 s->control_command_id = SERVICE_EXEC_START_PRE;
1783
ecedd90f
LP		 1784 r = service_spawn(s,
1785 s->control_command,
21b2ce39 1786 s->timeout_start_usec,
ecedd90f
LP		 1787 false,
1788 !s->permissions_start_only,
1789 !s->root_directory_start_only,
1790 true,
ecedd90f
LP		 1791 true,
1792 &s->control_pid);
1793 if (r < 0)
034c6ed7
LP		 1794 goto fail;
1795
80876c20
LP		 1796 service_set_state(s, SERVICE_START_PRE);
1797 } else
034c6ed7
LP		 1798 service_enter_start(s);
1799
1800 return;
1801
1802fail:
f2341e0a 1803 log_unit_warning_errno(UNIT(s), r, "Failed to run 'start-pre' task: %m");
f42806df 1804 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
034c6ed7
LP		 1805}
1806
1807static void service_enter_restart(Service *s) {
4afd3348 1808 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
034c6ed7 1809 int r;
398ef8ba 1810
034c6ed7
LP		 1811 assert(s);
1812
a8bb2e65
LP		 1813 if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
1814 /* Don't restart things if we are going down anyway */
f2341e0a 1815 log_unit_info(UNIT(s), "Stop job pending for unit, delaying automatic restart.");
2edfa366 1816
36c16a7c 1817 r = service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->restart_usec));
a8bb2e65 1818 if (r < 0)
2edfa366 1819 goto fail;
feae8adb
DW		 1820
1821 return;
2edfa366
LP		 1822 }
1823
48bb5876
DW		 1824 /* Any units that are bound to this service must also be
1825 * restarted. We use JOB_RESTART (instead of the more obvious
1826 * JOB_START) here so that those dependency jobs will be added
1827 * as well. */
4bd29fe5 1828 r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, &error, NULL);
48bb5876 1829 if (r < 0)
034c6ed7
LP		 1830 goto fail;
1831
a8bb2e65
LP		 1832 /* Note that we stay in the SERVICE_AUTO_RESTART state here,
1833 * it will be canceled as part of the service_stop() call that
1834 * is executed as part of JOB_RESTART. */
1835
f2341e0a 1836 log_unit_debug(UNIT(s), "Scheduled restart job.");
034c6ed7
LP		 1837 return;
1838
1839fail:
f2341e0a 1840 log_unit_warning(UNIT(s), "Failed to schedule restart job: %s", bus_error_message(&error, -r));
f42806df 1841 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
034c6ed7
LP		 1842}
1843
308d72dc
LP		 1844static void service_enter_reload_by_notify(Service *s) {
1845 assert(s);
1846
36c16a7c 1847 service_arm_timer(s, usec_add(now(CLOCK_MONOTONIC), s->timeout_start_usec));
308d72dc
LP		 1848 service_set_state(s, SERVICE_RELOAD);
1849}
1850
034c6ed7
LP		 1851static void service_enter_reload(Service *s) {
1852 int r;
1853
1854 assert(s);
1855
5e94833f 1856 service_unwatch_control_pid(s);
95c906ae 1857 s->reload_result = SERVICE_SUCCESS;
5e94833f 1858
117dcc57
ZJS		 1859 s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
1860 if (s->control_command) {
867b3b7d
LP		 1861 s->control_command_id = SERVICE_EXEC_RELOAD;
1862
ecedd90f
LP		 1863 r = service_spawn(s,
1864 s->control_command,
21b2ce39 1865 s->timeout_start_usec,
ecedd90f
LP		 1866 false,
1867 !s->permissions_start_only,
1868 !s->root_directory_start_only,
1869 false,
ecedd90f
LP		 1870 true,
1871 &s->control_pid);
1872 if (r < 0)
034c6ed7
LP		 1873 goto fail;
1874
80876c20
LP		 1875 service_set_state(s, SERVICE_RELOAD);
1876 } else
f42806df 1877 service_enter_running(s, SERVICE_SUCCESS);
034c6ed7
LP		 1878
1879 return;
1880
1881fail:
f2341e0a 1882 log_unit_warning_errno(UNIT(s), r, "Failed to run 'reload' task: %m");
f42806df
LP		 1883 s->reload_result = SERVICE_FAILURE_RESOURCES;
1884 service_enter_running(s, SERVICE_SUCCESS);
034c6ed7
LP		 1885}
1886
f42806df 1887static void service_run_next_control(Service *s) {
36c16a7c 1888 usec_t timeout;
034c6ed7
LP		 1889 int r;
1890
1891 assert(s);
1892 assert(s->control_command);
1893 assert(s->control_command->command_next);
1894
34e9ba66 1895 assert(s->control_command_id != SERVICE_EXEC_START);
034c6ed7 1896
34e9ba66 1897 s->control_command = s->control_command->command_next;
5e94833f
LP		 1898 service_unwatch_control_pid(s);
1899
36c16a7c
LP		 1900 if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
1901 timeout = s->timeout_start_usec;
1902 else
1903 timeout = s->timeout_stop_usec;
1904
ecedd90f
LP		 1905 r = service_spawn(s,
1906 s->control_command,
36c16a7c 1907 timeout,
ecedd90f
LP		 1908 false,
1909 !s->permissions_start_only,
1910 !s->root_directory_start_only,
1911 s->control_command_id == SERVICE_EXEC_START_PRE ||
1912 s->control_command_id == SERVICE_EXEC_STOP_POST,
ecedd90f
LP		 1913 true,
1914 &s->control_pid);
1915 if (r < 0)
034c6ed7
LP		 1916 goto fail;
1917
1918 return;
1919
1920fail:
f2341e0a 1921 log_unit_warning_errno(UNIT(s), r, "Failed to run next control task: %m");
034c6ed7 1922
80876c20 1923 if (s->state == SERVICE_START_PRE)
f42806df 1924 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
80876c20 1925 else if (s->state == SERVICE_STOP)
f42806df 1926 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
034c6ed7 1927 else if (s->state == SERVICE_STOP_POST)
f42806df 1928 service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
e2f3b44c 1929 else if (s->state == SERVICE_RELOAD) {
f42806df
LP		 1930 s->reload_result = SERVICE_FAILURE_RESOURCES;
1931 service_enter_running(s, SERVICE_SUCCESS);
e2f3b44c 1932 } else
f42806df 1933 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
5cb5a6ff
LP		 1934}
1935
f42806df 1936static void service_run_next_main(Service *s) {
34e9ba66
LP		 1937 pid_t pid;
1938 int r;
1939
1940 assert(s);
867b3b7d
LP		 1941 assert(s->main_command);
1942 assert(s->main_command->command_next);
1943 assert(s->type == SERVICE_ONESHOT);
34e9ba66 1944
867b3b7d 1945 s->main_command = s->main_command->command_next;
34e9ba66
LP		 1946 service_unwatch_main_pid(s);
1947
ecedd90f
LP		 1948 r = service_spawn(s,
1949 s->main_command,
21b2ce39 1950 s->timeout_start_usec,
ecedd90f
LP		 1951 true,
1952 true,
1953 true,
1954 true,
ecedd90f
LP		 1955 false,
1956 &pid);
1957 if (r < 0)
34e9ba66
LP		 1958 goto fail;
1959
1960 service_set_main_pid(s, pid);
1961
1962 return;
1963
1964fail:
f2341e0a 1965 log_unit_warning_errno(UNIT(s), r, "Failed to run next main task: %m");
f42806df 1966 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
34e9ba66
LP		 1967}
1968
87f0e418
LP		 1969static int service_start(Unit *u) {
1970 Service *s = SERVICE(u);
07299350 1971 int r;
5cb5a6ff
LP		 1972
1973 assert(s);
1974
034c6ed7
LP		 1975 /* We cannot fulfill this request right now, try again later
1976 * please! */
a00973af
LP		 1977 if (IN_SET(s->state,
1978 SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
1979 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))
5cb5a6ff
LP		 1980 return -EAGAIN;
1981
034c6ed7 1982 /* Already on it! */
a00973af 1983 if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST))
034c6ed7
LP		 1984 return 0;
1985
2e9d6c12 1986 /* A service that will be restarted must be stopped first to
7f2cddae 1987 * trigger BindsTo and/or OnFailure dependencies. If a user
2e9d6c12 1988 * does not want to wait for the holdoff time to elapse, the
d4943dc7
LP		 1989 * service should be manually restarted, not started. We
1990 * simply return EAGAIN here, so that any start jobs stay
1991 * queued, and assume that the auto restart timer will
1992 * eventually trigger the restart. */
1993 if (s->state == SERVICE_AUTO_RESTART)
a8bb2e65 1994 return -EAGAIN;
2e9d6c12 1995
a00973af 1996 assert(IN_SET(s->state, SERVICE_DEAD, SERVICE_FAILED));
5cb5a6ff 1997
07299350
LP		 1998 /* Make sure we don't enter a busy loop of some kind. */
1999 r = unit_start_limit_test(u);
2000 if (r < 0) {
2001 service_enter_dead(s, SERVICE_FAILURE_START_LIMIT_HIT, false);
2002 return r;
2003 }
2004
f42806df
LP		 2005 s->result = SERVICE_SUCCESS;
2006 s->reload_result = SERVICE_SUCCESS;
034c6ed7 2007 s->main_pid_known = false;
6dfa5494 2008 s->main_pid_alien = false;
47342320 2009 s->forbid_restart = false;
5ad096b3 2010 s->reset_cpu_usage = true;
034c6ed7 2011
a1e58e8e 2012 s->status_text = mfree(s->status_text);
8cfdb077
LP		 2013 s->status_errno = 0;
2014
308d72dc
LP		 2015 s->notify_state = NOTIFY_UNKNOWN;
2016
2787d83c
M		 2017 s->watchdog_override_enable = false;
2018 s->watchdog_override_usec = 0;
2019
034c6ed7 2020 service_enter_start_pre(s);
82a2b6bb 2021 return 1;
5cb5a6ff
LP		 2022}
2023
87f0e418
LP		 2024static int service_stop(Unit *u) {
2025 Service *s = SERVICE(u);
5cb5a6ff
LP		 2026
2027 assert(s);
2028
a509f0e6 2029 /* Don't create restart jobs from manual stops. */
47342320 2030 s->forbid_restart = true;
034c6ed7 2031
e537352b 2032 /* Already on it */
a00973af
LP		 2033 if (IN_SET(s->state,
2034 SERVICE_STOP, SERVICE_STOP_SIGABRT, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
2035 SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))
e537352b
LP		 2036 return 0;
2037
f0c7b229 2038 /* A restart will be scheduled or is in progress. */
034c6ed7 2039 if (s->state == SERVICE_AUTO_RESTART) {
0c7f15b3 2040 service_set_state(s, SERVICE_DEAD);
034c6ed7
LP		 2041 return 0;
2042 }
2043
3f6c78dc
LP		 2044 /* If there's already something running we go directly into
2045 * kill mode. */
a00973af 2046 if (IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD)) {
f42806df 2047 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
3f6c78dc
LP		 2048 return 0;
2049 }
5cb5a6ff 2050
a00973af 2051 assert(IN_SET(s->state, SERVICE_RUNNING, SERVICE_EXITED));
3a762661 2052
f42806df 2053 service_enter_stop(s, SERVICE_SUCCESS);
82a2b6bb 2054 return 1;
5cb5a6ff
LP		 2055}
2056
87f0e418
LP		 2057static int service_reload(Unit *u) {
2058 Service *s = SERVICE(u);
034c6ed7
LP		 2059
2060 assert(s);
2061
80876c20 2062 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
034c6ed7
LP		 2063
2064 service_enter_reload(s);
2d018ae2 2065 return 1;
5cb5a6ff
LP		 2066}
2067
44a6b1b6 2068_pure_ static bool service_can_reload(Unit *u) {
87f0e418 2069 Service *s = SERVICE(u);
034c6ed7
LP		 2070
2071 assert(s);
2072
2073 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2074}
2075
a16e1123
LP		 2076static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2077 Service *s = SERVICE(u);
2339fc93 2078 ServiceFDStore *fs;
a34ceba6 2079 int r;
a16e1123
LP		 2080
2081 assert(u);
2082 assert(f);
2083 assert(fds);
2084
2085 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
f42806df
LP		 2086 unit_serialize_item(u, f, "result", service_result_to_string(s->result));
2087 unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
a16e1123
LP		 2088
2089 if (s->control_pid > 0)
f06db334 2090 unit_serialize_item_format(u, f, "control-pid", PID_FMT, s->control_pid);
a16e1123 2091
5925dd3c 2092 if (s->main_pid_known && s->main_pid > 0)
ccd06097 2093 unit_serialize_item_format(u, f, "main-pid", PID_FMT, s->main_pid);
a16e1123
LP		 2094
2095 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
de1d4f9b 2096 unit_serialize_item(u, f, "bus-name-good", yes_no(s->bus_name_good));
d8ccf5fd 2097 unit_serialize_item(u, f, "bus-name-owner", s->bus_name_owner);
a16e1123 2098
a34ceba6
LP		 2099 r = unit_serialize_item_escaped(u, f, "status-text", s->status_text);
2100 if (r < 0)
2101 return r;
3a2776bc 2102
cfc4eb4c
LP		 2103 /* FIXME: There's a minor uncleanliness here: if there are
2104 * multiple commands attached here, we will start from the
2105 * first one again */
a16e1123 2106 if (s->control_command_id >= 0)
f06db334 2107 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
a16e1123 2108
a34ceba6
LP		 2109 r = unit_serialize_item_fd(u, f, fds, "stdin-fd", s->stdin_fd);
2110 if (r < 0)
2111 return r;
2112 r = unit_serialize_item_fd(u, f, fds, "stdout-fd", s->stdout_fd);
2113 if (r < 0)
2114 return r;
2115 r = unit_serialize_item_fd(u, f, fds, "stderr-fd", s->stderr_fd);
2116 if (r < 0)
2117 return r;
e44da745 2118
a34ceba6 2119 r = unit_serialize_item_fd(u, f, fds, "socket-fd", s->socket_fd);
a34ceba6
LP		 2120 if (r < 0)
2121 return r;
e44da745 2122
2339fc93 2123 LIST_FOREACH(fd_store, fs, s->fd_store) {
8dd4c05b 2124 _cleanup_free_ char *c = NULL;
2339fc93
LP		 2125 int copy;
2126
2127 copy = fdset_put_dup(fds, fs->fd);
2128 if (copy < 0)
2129 return copy;
2130
8dd4c05b
LP		 2131 c = cescape(fs->fdname);
2132
2133 unit_serialize_item_format(u, f, "fd-store-fd", "%i %s", copy, strempty(c));
2339fc93
LP		 2134 }
2135
ecdbca40 2136 if (s->main_exec_status.pid > 0) {
f06db334
LP		 2137 unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT, s->main_exec_status.pid);
2138 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2139 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
ecdbca40 2140
799fd0fd 2141 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
f06db334
LP		 2142 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2143 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
ecdbca40
LP		 2144 }
2145 }
f06db334 2146
36b693a6 2147 dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
ecdbca40 2148
a34ceba6 2149 unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
6aca9a58 2150
2787d83c
M		 2151 if (s->watchdog_override_enable)
2152 unit_serialize_item_format(u, f, "watchdog-override-usec", USEC_FMT, s->watchdog_override_usec);
2153
a16e1123
LP		 2154 return 0;
2155}
2156
2157static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2158 Service *s = SERVICE(u);
2339fc93 2159 int r;
a16e1123
LP		 2160
2161 assert(u);
2162 assert(key);
2163 assert(value);
2164 assert(fds);
2165
2166 if (streq(key, "state")) {
2167 ServiceState state;
2168
117dcc57
ZJS		 2169 state = service_state_from_string(value);
2170 if (state < 0)
f2341e0a 2171 log_unit_debug(u, "Failed to parse state value: %s", value);
a16e1123
LP		 2172 else
2173 s->deserialized_state = state;
f42806df
LP		 2174 } else if (streq(key, "result")) {
2175 ServiceResult f;
2176
2177 f = service_result_from_string(value);
2178 if (f < 0)
f2341e0a 2179 log_unit_debug(u, "Failed to parse result value: %s", value);
f42806df
LP		 2180 else if (f != SERVICE_SUCCESS)
2181 s->result = f;
2182
2183 } else if (streq(key, "reload-result")) {
2184 ServiceResult f;
2185
2186 f = service_result_from_string(value);
2187 if (f < 0)
f2341e0a 2188 log_unit_debug(u, "Failed to parse reload result value: %s", value);
f42806df
LP		 2189 else if (f != SERVICE_SUCCESS)
2190 s->reload_result = f;
a16e1123 2191
a16e1123 2192 } else if (streq(key, "control-pid")) {
5925dd3c 2193 pid_t pid;
a16e1123 2194
e364ad06 2195 if (parse_pid(value, &pid) < 0)
f2341e0a 2196 log_unit_debug(u, "Failed to parse control-pid value: %s", value);
a16e1123 2197 else
e55224ca 2198 s->control_pid = pid;
a16e1123 2199 } else if (streq(key, "main-pid")) {
5925dd3c 2200 pid_t pid;
a16e1123 2201
e364ad06 2202 if (parse_pid(value, &pid) < 0)
f2341e0a 2203 log_unit_debug(u, "Failed to parse main-pid value: %s", value);
7400b9d2
LP		 2204 else {
2205 service_set_main_pid(s, pid);
2206 unit_watch_pid(UNIT(s), pid);
2207 }
a16e1123
LP		 2208 } else if (streq(key, "main-pid-known")) {
2209 int b;
2210
117dcc57
ZJS		 2211 b = parse_boolean(value);
2212 if (b < 0)
f2341e0a 2213 log_unit_debug(u, "Failed to parse main-pid-known value: %s", value);
a16e1123
LP		 2214 else
2215 s->main_pid_known = b;
de1d4f9b
WF		 2216 } else if (streq(key, "bus-name-good")) {
2217 int b;
2218
2219 b = parse_boolean(value);
2220 if (b < 0)
2221 log_unit_debug(u, "Failed to parse bus-name-good value: %s", value);
2222 else
2223 s->bus_name_good = b;
d8ccf5fd
DM		 2224 } else if (streq(key, "bus-name-owner")) {
2225 r = free_and_strdup(&s->bus_name_owner, value);
2226 if (r < 0)
2227 log_unit_error_errno(u, r, "Unable to deserialize current bus owner %s: %m", value);
3a2776bc
LP		 2228 } else if (streq(key, "status-text")) {
2229 char *t;
2230
f2341e0a
LP		 2231 r = cunescape(value, 0, &t);
2232 if (r < 0)
2233 log_unit_debug_errno(u, r, "Failed to unescape status text: %s", value);
117dcc57 2234 else {
3a2776bc
LP		 2235 free(s->status_text);
2236 s->status_text = t;
2237 }
2238
a16e1123
LP		 2239 } else if (streq(key, "control-command")) {
2240 ServiceExecCommand id;
2241
117dcc57
ZJS		 2242 id = service_exec_command_from_string(value);
2243 if (id < 0)
f2341e0a 2244 log_unit_debug(u, "Failed to parse exec-command value: %s", value);
a16e1123
LP		 2245 else {
2246 s->control_command_id = id;
2247 s->control_command = s->exec_command[id];
2248 }
2249 } else if (streq(key, "socket-fd")) {
2250 int fd;
2251
2252 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
f2341e0a 2253 log_unit_debug(u, "Failed to parse socket-fd value: %s", value);
a16e1123 2254 else {
574634bc 2255 asynchronous_close(s->socket_fd);
a16e1123
LP		 2256 s->socket_fd = fdset_remove(fds, fd);
2257 }
2339fc93 2258 } else if (streq(key, "fd-store-fd")) {
8dd4c05b
LP		 2259 const char *fdv;
2260 size_t pf;
2339fc93
LP		 2261 int fd;
2262
8dd4c05b
LP		 2263 pf = strcspn(value, WHITESPACE);
2264 fdv = strndupa(value, pf);
2265
2266 if (safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
f2341e0a 2267 log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value);
2339fc93 2268 else {
8dd4c05b
LP		 2269 _cleanup_free_ char *t = NULL;
2270 const char *fdn;
2271
2272 fdn = value + pf;
2273 fdn += strspn(fdn, WHITESPACE);
2274 (void) cunescape(fdn, 0, &t);
2275
2276 r = service_add_fd_store(s, fd, t);
2339fc93 2277 if (r < 0)
f2341e0a 2278 log_unit_error_errno(u, r, "Failed to add fd to store: %m");
2339fc93
LP		 2279 else if (r > 0)
2280 fdset_remove(fds, fd);
2281 }
2282
ecdbca40
LP		 2283 } else if (streq(key, "main-exec-status-pid")) {
2284 pid_t pid;
2285
e364ad06 2286 if (parse_pid(value, &pid) < 0)
f2341e0a 2287 log_unit_debug(u, "Failed to parse main-exec-status-pid value: %s", value);
ecdbca40
LP		 2288 else
2289 s->main_exec_status.pid = pid;
2290 } else if (streq(key, "main-exec-status-code")) {
2291 int i;
2292
e364ad06 2293 if (safe_atoi(value, &i) < 0)
f2341e0a 2294 log_unit_debug(u, "Failed to parse main-exec-status-code value: %s", value);
ecdbca40
LP		 2295 else
2296 s->main_exec_status.code = i;
2297 } else if (streq(key, "main-exec-status-status")) {
2298 int i;
2299
e364ad06 2300 if (safe_atoi(value, &i) < 0)
f2341e0a 2301 log_unit_debug(u, "Failed to parse main-exec-status-status value: %s", value);
ecdbca40
LP		 2302 else
2303 s->main_exec_status.status = i;
799fd0fd
LP		 2304 } else if (streq(key, "main-exec-status-start"))
2305 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2306 else if (streq(key, "main-exec-status-exit"))
2307 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
a6927d7f
MO		 2308 else if (streq(key, "watchdog-timestamp"))
2309 dual_timestamp_deserialize(value, &s->watchdog_timestamp);
613b411c 2310 else if (streq(key, "forbid-restart")) {
6aca9a58
SE		 2311 int b;
2312
2313 b = parse_boolean(value);
2314 if (b < 0)
f2341e0a 2315 log_unit_debug(u, "Failed to parse forbid-restart value: %s", value);
6aca9a58
SE		 2316 else
2317 s->forbid_restart = b;
a34ceba6
LP		 2318 } else if (streq(key, "stdin-fd")) {
2319 int fd;
2320
2321 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2322 log_unit_debug(u, "Failed to parse stdin-fd value: %s", value);
2323 else {
2324 asynchronous_close(s->stdin_fd);
2325 s->stdin_fd = fdset_remove(fds, fd);
1e22b5cd 2326 s->exec_context.stdio_as_fds = true;
a34ceba6
LP		 2327 }
2328 } else if (streq(key, "stdout-fd")) {
2329 int fd;
2330
2331 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2332 log_unit_debug(u, "Failed to parse stdout-fd value: %s", value);
2333 else {
2334 asynchronous_close(s->stdout_fd);
2335 s->stdout_fd = fdset_remove(fds, fd);
1e22b5cd 2336 s->exec_context.stdio_as_fds = true;
a34ceba6
LP		 2337 }
2338 } else if (streq(key, "stderr-fd")) {
2339 int fd;
2340
2341 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2342 log_unit_debug(u, "Failed to parse stderr-fd value: %s", value);
2343 else {
2344 asynchronous_close(s->stderr_fd);
2345 s->stderr_fd = fdset_remove(fds, fd);
1e22b5cd 2346 s->exec_context.stdio_as_fds = true;
a34ceba6 2347 }
2787d83c
M		 2348 } else if (streq(key, "watchdog-override-usec")) {
2349 usec_t watchdog_override_usec;
2350 if (timestamp_deserialize(value, &watchdog_override_usec) < 0)
2351 log_unit_debug(u, "Failed to parse watchdog_override_usec value: %s", value);
2352 else {
2353 s->watchdog_override_enable = true;
2354 s->watchdog_override_usec = watchdog_override_usec;
2355 }
c17ec25e 2356 } else
f2341e0a 2357 log_unit_debug(u, "Unknown serialization key: %s", key);
a16e1123
LP		 2358
2359 return 0;
2360}
2361
44a6b1b6 2362_pure_ static UnitActiveState service_active_state(Unit *u) {
e056b01d
LP		 2363 const UnitActiveState *table;
2364
87f0e418 2365 assert(u);
5cb5a6ff 2366
e056b01d
LP		 2367 table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
2368
2369 return table[SERVICE(u)->state];
034c6ed7
LP		 2370}
2371
10a94420
LP		 2372static const char *service_sub_state_to_string(Unit *u) {
2373 assert(u);
2374
2375 return service_state_to_string(SERVICE(u)->state);
2376}
2377
701cc384
LP		 2378static bool service_check_gc(Unit *u) {
2379 Service *s = SERVICE(u);
2380
2381 assert(s);
2382
6d55002a
LP		 2383 /* Never clean up services that still have a process around,
2384 * even if the service is formally dead. */
2385 if (cgroup_good(s) > 0 ||
2386 main_pid_good(s) > 0 ||
2387 control_pid_good(s) > 0)
2388 return true;
2389
6d55002a
LP		 2390 return false;
2391}
2392
3a111838
MS		 2393static int service_retry_pid_file(Service *s) {
2394 int r;
2395
2396 assert(s->pid_file);
2397 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2398
2399 r = service_load_pid_file(s, false);
2400 if (r < 0)
2401 return r;
2402
2403 service_unwatch_pid_file(s);
2404
f42806df 2405 service_enter_running(s, SERVICE_SUCCESS);
3a111838
MS		 2406 return 0;
2407}
2408
2409static int service_watch_pid_file(Service *s) {
2410 int r;
2411
f2341e0a 2412 log_unit_debug(UNIT(s), "Setting watch for PID file %s", s->pid_file_pathspec->path);
8bb2d17d 2413
718db961 2414 r = path_spec_watch(s->pid_file_pathspec, service_dispatch_io);
3a111838
MS		 2415 if (r < 0)
2416 goto fail;
2417
2418 /* the pidfile might have appeared just before we set the watch */
f2341e0a 2419 log_unit_debug(UNIT(s), "Trying to read PID file %s in case it changed", s->pid_file_pathspec->path);
3a111838
MS		 2420 service_retry_pid_file(s);
2421
2422 return 0;
2423fail:
f2341e0a 2424 log_unit_error_errno(UNIT(s), r, "Failed to set a watch for PID file %s: %m", s->pid_file_pathspec->path);
3a111838
MS		 2425 service_unwatch_pid_file(s);
2426 return r;
2427}
2428
2429static int service_demand_pid_file(Service *s) {
2430 PathSpec *ps;
2431
2432 assert(s->pid_file);
2433 assert(!s->pid_file_pathspec);
2434
2435 ps = new0(PathSpec, 1);
2436 if (!ps)
2437 return -ENOMEM;
2438
718db961 2439 ps->unit = UNIT(s);
3a111838
MS		 2440 ps->path = strdup(s->pid_file);
2441 if (!ps->path) {
2442 free(ps);
2443 return -ENOMEM;
2444 }
2445
2446 path_kill_slashes(ps->path);
2447
2448 /* PATH_CHANGED would not be enough. There are daemons (sendmail) that
2449 * keep their PID file open all the time. */
2450 ps->type = PATH_MODIFIED;
2451 ps->inotify_fd = -1;
2452
2453 s->pid_file_pathspec = ps;
2454
2455 return service_watch_pid_file(s);
2456}
2457
718db961 2458static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) {
e14c2802
LP		 2459 PathSpec *p = userdata;
2460 Service *s;
2461
2462 assert(p);
2463
2464 s = SERVICE(p->unit);
3a111838
MS		 2465
2466 assert(s);
2467 assert(fd >= 0);
2468 assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
2469 assert(s->pid_file_pathspec);
57020a3a 2470 assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
3a111838 2471
f2341e0a 2472 log_unit_debug(UNIT(s), "inotify event");
3a111838 2473
e14c2802 2474 if (path_spec_fd_event(p, events) < 0)
3a111838
MS		 2475 goto fail;
2476
2477 if (service_retry_pid_file(s) == 0)
718db961 2478 return 0;
3a111838
MS		 2479
2480 if (service_watch_pid_file(s) < 0)
2481 goto fail;
2482
718db961
LP		 2483 return 0;
2484
3a111838
MS		 2485fail:
2486 service_unwatch_pid_file(s);
f42806df 2487 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
718db961 2488 return 0;
3a111838
MS		 2489}
2490
a911bb9a
LP		 2491static void service_notify_cgroup_empty_event(Unit *u) {
2492 Service *s = SERVICE(u);
2493
2494 assert(u);
2495
f2341e0a 2496 log_unit_debug(u, "cgroup is empty");
a911bb9a
LP		 2497
2498 switch (s->state) {
2499
2500 /* Waiting for SIGCHLD is usually more interesting,
2501 * because it includes return codes/signals. Which is
2502 * why we ignore the cgroup events for most cases,
2503 * except when we don't know pid which to expect the
2504 * SIGCHLD for. */
2505
2506 case SERVICE_START:
2507 case SERVICE_START_POST:
2508 /* If we were hoping for the daemon to write its PID file,
2509 * we can give up now. */
2510 if (s->pid_file_pathspec) {
f2341e0a 2511 log_unit_warning(u, "Daemon never wrote its PID file. Failing.");
8bb2d17d 2512
a911bb9a
LP		 2513 service_unwatch_pid_file(s);
2514 if (s->state == SERVICE_START)
2515 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
2516 else
2517 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2518 }
2519 break;
2520
2521 case SERVICE_RUNNING:
2522 /* service_enter_running() will figure out what to do */
2523 service_enter_running(s, SERVICE_SUCCESS);
2524 break;
2525
db2cb23b 2526 case SERVICE_STOP_SIGABRT:
a911bb9a
LP		 2527 case SERVICE_STOP_SIGTERM:
2528 case SERVICE_STOP_SIGKILL:
2529
2530 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2531 service_enter_stop_post(s, SERVICE_SUCCESS);
2532
2533 break;
2534
2535 case SERVICE_STOP_POST:
2536 case SERVICE_FINAL_SIGTERM:
2537 case SERVICE_FINAL_SIGKILL:
2538 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2539 service_enter_dead(s, SERVICE_SUCCESS, true);
2540
2541 break;
2542
2543 default:
2544 ;
2545 }
2546}
2547
87f0e418
LP		 2548static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2549 Service *s = SERVICE(u);
f42806df 2550 ServiceResult f;
5cb5a6ff
LP		 2551
2552 assert(s);
034c6ed7
LP		 2553 assert(pid >= 0);
2554
96342de6
LN		 2555 if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
2556 is_clean_exit_lsb(code, status, &s->success_status))
f42806df
LP		 2557 f = SERVICE_SUCCESS;
2558 else if (code == CLD_EXITED)
2559 f = SERVICE_FAILURE_EXIT_CODE;
2560 else if (code == CLD_KILLED)
2561 f = SERVICE_FAILURE_SIGNAL;
2562 else if (code == CLD_DUMPED)
2563 f = SERVICE_FAILURE_CORE_DUMP;
d06dacd0 2564 else
cfc4eb4c 2565 assert_not_reached("Unknown code");
034c6ed7
LP		 2566
2567 if (s->main_pid == pid) {
db01f8b3
MS		 2568 /* Forking services may occasionally move to a new PID.
2569 * As long as they update the PID file before exiting the old
2570 * PID, they're fine. */
5375410b 2571 if (service_load_pid_file(s, false) == 0)
db01f8b3 2572 return;
034c6ed7 2573
034c6ed7 2574 s->main_pid = 0;
6ea832a2 2575 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
034c6ed7 2576
867b3b7d 2577 if (s->main_command) {
fbeefb45
LP		 2578 /* If this is not a forking service than the
2579 * main process got started and hence we copy
2580 * the exit status so that it is recorded both
2581 * as main and as control process exit
2582 * status */
2583
867b3b7d 2584 s->main_command->exec_status = s->main_exec_status;
b708e7ce 2585
867b3b7d 2586 if (s->main_command->ignore)
f42806df 2587 f = SERVICE_SUCCESS;
fbeefb45
LP		 2588 } else if (s->exec_command[SERVICE_EXEC_START]) {
2589
2590 /* If this is a forked process, then we should
2591 * ignore the return value if this was
2592 * configured for the starter process */
2593
2594 if (s->exec_command[SERVICE_EXEC_START]->ignore)
2595 f = SERVICE_SUCCESS;
034c6ed7
LP		 2596 }
2597
f2341e0a
LP		 2598 log_struct(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
2599 LOG_UNIT_ID(u),
2600 LOG_UNIT_MESSAGE(u, "Main process exited, code=%s, status=%i/%s",
2601 sigchld_code_to_string(code), status,
e2cc6eca
LP		 2602 strna(code == CLD_EXITED
2603 ? exit_status_to_string(status, EXIT_STATUS_FULL)
2604 : signal_to_string(status))),
f2341e0a
LP		 2605 "EXIT_CODE=%s", sigchld_code_to_string(code),
2606 "EXIT_STATUS=%i", status,
2607 NULL);
f42806df
LP		 2608
2609 if (f != SERVICE_SUCCESS)
2610 s->result = f;
034c6ed7 2611
867b3b7d
LP		 2612 if (s->main_command &&
2613 s->main_command->command_next &&
f42806df 2614 f == SERVICE_SUCCESS) {
034c6ed7 2615
34e9ba66
LP		 2616 /* There is another command to *
2617 * execute, so let's do that. */
034c6ed7 2618
f2341e0a 2619 log_unit_debug(u, "Running next main command for state %s.", service_state_to_string(s->state));
f42806df 2620 service_run_next_main(s);
034c6ed7 2621
34e9ba66
LP		 2622 } else {
2623
2624 /* The service exited, so the service is officially
2625 * gone. */
867b3b7d 2626 s->main_command = NULL;
34e9ba66
LP		 2627
2628 switch (s->state) {
2629
2630 case SERVICE_START_POST:
2631 case SERVICE_RELOAD:
2632 case SERVICE_STOP:
2633 /* Need to wait until the operation is
2634 * done */
c4653a4d 2635 break;
7d55e835 2636
34e9ba66
LP		 2637 case SERVICE_START:
2638 if (s->type == SERVICE_ONESHOT) {
2639 /* This was our main goal, so let's go on */
f42806df 2640 if (f == SERVICE_SUCCESS)
34e9ba66
LP		 2641 service_enter_start_post(s);
2642 else
f42806df 2643 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
34e9ba66 2644 break;
34e9ba66 2645 }
034c6ed7 2646
bfba3256
LP		 2647 /* Fall through */
2648
34e9ba66 2649 case SERVICE_RUNNING:
f42806df 2650 service_enter_running(s, f);
34e9ba66 2651 break;
034c6ed7 2652
db2cb23b 2653 case SERVICE_STOP_SIGABRT:
34e9ba66
LP		 2654 case SERVICE_STOP_SIGTERM:
2655 case SERVICE_STOP_SIGKILL:
5cb5a6ff 2656
34e9ba66 2657 if (!control_pid_good(s))
f42806df 2658 service_enter_stop_post(s, f);
5cb5a6ff 2659
34e9ba66
LP		 2660 /* If there is still a control process, wait for that first */
2661 break;
2662
bf108e55
LP		 2663 case SERVICE_STOP_POST:
2664 case SERVICE_FINAL_SIGTERM:
2665 case SERVICE_FINAL_SIGKILL:
2666
2667 if (!control_pid_good(s))
2668 service_enter_dead(s, f, true);
2669 break;
2670
34e9ba66
LP		 2671 default:
2672 assert_not_reached("Uh, main process died at wrong time.");
2673 }
034c6ed7 2674 }
5cb5a6ff 2675
034c6ed7 2676 } else if (s->control_pid == pid) {
34e9ba66
LP		 2677 s->control_pid = 0;
2678
b708e7ce 2679 if (s->control_command) {
8bb2d17d 2680 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
a16e1123 2681
b708e7ce 2682 if (s->control_command->ignore)
f42806df 2683 f = SERVICE_SUCCESS;
b708e7ce
LP		 2684 }
2685
f2341e0a
LP		 2686 log_unit_full(u, f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, 0,
2687 "Control process exited, code=%s status=%i",
2688 sigchld_code_to_string(code), status);
f42806df
LP		 2689
2690 if (f != SERVICE_SUCCESS)
2691 s->result = f;
034c6ed7 2692
88f3e0c9
LP		 2693 /* Immediately get rid of the cgroup, so that the
2694 * kernel doesn't delay the cgroup empty messages for
2695 * the service cgroup any longer than necessary */
4ad49000 2696 service_kill_control_processes(s);
88f3e0c9 2697
34e9ba66
LP		 2698 if (s->control_command &&
2699 s->control_command->command_next &&
f42806df 2700 f == SERVICE_SUCCESS) {
034c6ed7
LP		 2701
2702 /* There is another command to *
2703 * execute, so let's do that. */
2704
f2341e0a 2705 log_unit_debug(u, "Running next control command for state %s.", service_state_to_string(s->state));
f42806df 2706 service_run_next_control(s);
034c6ed7 2707
80876c20 2708 } else {
034c6ed7
LP		 2709 /* No further commands for this step, so let's
2710 * figure out what to do next */
2711
a16e1123
LP		 2712 s->control_command = NULL;
2713 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2714
f2341e0a 2715 log_unit_debug(u, "Got final SIGCHLD for state %s.", service_state_to_string(s->state));
bd982a8b 2716
034c6ed7
LP		 2717 switch (s->state) {
2718
2719 case SERVICE_START_PRE:
f42806df 2720 if (f == SERVICE_SUCCESS)
034c6ed7
LP		 2721 service_enter_start(s);
2722 else
f42806df 2723 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
034c6ed7
LP		 2724 break;
2725
2726 case SERVICE_START:
bfba3256
LP		 2727 if (s->type != SERVICE_FORKING)
2728 /* Maybe spurious event due to a reload that changed the type? */
2729 break;
034c6ed7 2730
f42806df
LP		 2731 if (f != SERVICE_SUCCESS) {
2732 service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
3a111838
MS		 2733 break;
2734 }
034c6ed7 2735
3a111838 2736 if (s->pid_file) {
f42806df
LP		 2737 bool has_start_post;
2738 int r;
2739
3a111838
MS		 2740 /* Let's try to load the pid file here if we can.
2741 * The PID file might actually be created by a START_POST
2742 * script. In that case don't worry if the loading fails. */
f42806df
LP		 2743
2744 has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
2745 r = service_load_pid_file(s, !has_start_post);
3a111838
MS		 2746 if (!has_start_post && r < 0) {
2747 r = service_demand_pid_file(s);
2748 if (r < 0 || !cgroup_good(s))
f42806df 2749 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
3a111838
MS		 2750 break;
2751 }
034c6ed7 2752 } else
783e05d6 2753 service_search_main_pid(s);
034c6ed7 2754
3a111838 2755 service_enter_start_post(s);
034c6ed7
LP		 2756 break;
2757
2758 case SERVICE_START_POST:
f42806df 2759 if (f != SERVICE_SUCCESS) {
ce359e98 2760 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
2096e009 2761 break;
034c6ed7
LP		 2762 }
2763
2096e009 2764 if (s->pid_file) {
f42806df
LP		 2765 int r;
2766
2767 r = service_load_pid_file(s, true);
2096e009
MS		 2768 if (r < 0) {
2769 r = service_demand_pid_file(s);
2770 if (r < 0 || !cgroup_good(s))
f42806df 2771 service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
2096e009
MS		 2772 break;
2773 }
2774 } else
783e05d6 2775 service_search_main_pid(s);
2096e009 2776
f42806df 2777 service_enter_running(s, SERVICE_SUCCESS);
3185a36b 2778 break;
034c6ed7
LP		 2779
2780 case SERVICE_RELOAD:
7236ce6e
ZJS		 2781 if (f == SERVICE_SUCCESS)
2782 if (service_load_pid_file(s, true) < 0)
2783 service_search_main_pid(s);
3185a36b 2784
f42806df
LP		 2785 s->reload_result = f;
2786 service_enter_running(s, SERVICE_SUCCESS);
034c6ed7
LP		 2787 break;
2788
2789 case SERVICE_STOP:
f42806df 2790 service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
034c6ed7
LP		 2791 break;
2792
db2cb23b 2793 case SERVICE_STOP_SIGABRT:
034c6ed7
LP		 2794 case SERVICE_STOP_SIGTERM:
2795 case SERVICE_STOP_SIGKILL:
2796 if (main_pid_good(s) <= 0)
f42806df 2797 service_enter_stop_post(s, f);
034c6ed7
LP		 2798
2799 /* If there is still a service
2800 * process around, wait until
2801 * that one quit, too */
2802 break;
2803
2804 case SERVICE_STOP_POST:
2805 case SERVICE_FINAL_SIGTERM:
2806 case SERVICE_FINAL_SIGKILL:
bf108e55
LP		 2807 if (main_pid_good(s) <= 0)
2808 service_enter_dead(s, f, true);
034c6ed7
LP		 2809 break;
2810
2811 default:
2812 assert_not_reached("Uh, control process died at wrong time.");
2813 }
2814 }
8c47c732 2815 }
c4e2ceae
LP		 2816
2817 /* Notify clients about changed exit status */
2818 unit_add_to_dbus_queue(u);
a911bb9a
LP		 2819
2820 /* We got one SIGCHLD for the service, let's watch all
2821 * processes that are now running of the service, and watch
2822 * that. Among the PIDs we then watch will be children
2823 * reassigned to us, which hopefully allows us to identify
2824 * when all children are gone */
2825 unit_tidy_watch_pids(u, s->main_pid, s->control_pid);
2826 unit_watch_all_pids(u);
2827
bbc85a16
EV		 2828 /* If the PID set is empty now, then let's finish this off
2829 (On unified we use proper notifications) */
2830 if (cg_unified() <= 0 && set_isempty(u->pids))
a911bb9a 2831 service_notify_cgroup_empty_event(u);
034c6ed7
LP		 2832}
2833
718db961
LP		 2834static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
2835 Service *s = SERVICE(userdata);
034c6ed7
LP		 2836
2837 assert(s);
718db961 2838 assert(source == s->timer_event_source);
034c6ed7
LP		 2839
2840 switch (s->state) {
2841
2842 case SERVICE_START_PRE:
2843 case SERVICE_START:
f2341e0a 2844 log_unit_warning(UNIT(s), "%s operation timed out. Terminating.", s->state == SERVICE_START ? "Start" : "Start-pre");
f42806df 2845 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
80876c20
LP		 2846 break;
2847
034c6ed7 2848 case SERVICE_START_POST:
f2341e0a 2849 log_unit_warning(UNIT(s), "Start-post operation timed out. Stopping.");
ce359e98 2850 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
034c6ed7
LP		 2851 break;
2852
36c16a7c
LP		 2853 case SERVICE_RUNNING:
2854 log_unit_warning(UNIT(s), "Service reached runtime time limit. Stopping.");
2855 service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
2856 break;
2857
e2f3b44c 2858 case SERVICE_RELOAD:
089b64d5 2859 log_unit_warning(UNIT(s), "Reload operation timed out. Killing reload process.");
478b6192 2860 service_kill_control_processes(s);
f42806df
LP		 2861 s->reload_result = SERVICE_FAILURE_TIMEOUT;
2862 service_enter_running(s, SERVICE_SUCCESS);
e2f3b44c
LP		 2863 break;
2864
034c6ed7 2865 case SERVICE_STOP:
f2341e0a 2866 log_unit_warning(UNIT(s), "Stopping timed out. Terminating.");
f42806df 2867 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
034c6ed7
LP		 2868 break;
2869
db2cb23b 2870 case SERVICE_STOP_SIGABRT:
f2341e0a 2871 log_unit_warning(UNIT(s), "State 'stop-sigabrt' timed out. Terminating.");
2ab2ab7b 2872 service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
db2cb23b
UTL		 2873 break;
2874
034c6ed7 2875 case SERVICE_STOP_SIGTERM:
4819ff03 2876 if (s->kill_context.send_sigkill) {
f2341e0a 2877 log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Killing.");
f42806df 2878 service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
ba035df2 2879 } else {
f2341e0a 2880 log_unit_warning(UNIT(s), "State 'stop-sigterm' timed out. Skipping SIGKILL.");
f42806df 2881 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
ba035df2
LP		 2882 }
2883
034c6ed7
LP		 2884 break;
2885
2886 case SERVICE_STOP_SIGKILL:
35b8ca3a 2887 /* Uh, we sent a SIGKILL and it is still not gone?
034c6ed7
LP		 2888 * Must be something we cannot kill, so let's just be
2889 * weirded out and continue */
2890
f2341e0a 2891 log_unit_warning(UNIT(s), "Processes still around after SIGKILL. Ignoring.");
f42806df 2892 service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
034c6ed7
LP		 2893 break;
2894
2895 case SERVICE_STOP_POST:
f2341e0a 2896 log_unit_warning(UNIT(s), "State 'stop-post' timed out. Terminating.");
f42806df 2897 service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
034c6ed7
LP		 2898 break;
2899
2900 case SERVICE_FINAL_SIGTERM:
4819ff03 2901 if (s->kill_context.send_sigkill) {
f2341e0a 2902 log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Killing.");
f42806df 2903 service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
ba035df2 2904 } else {
f2341e0a 2905 log_unit_warning(UNIT(s), "State 'stop-final-sigterm' timed out. Skipping SIGKILL. Entering failed mode.");
f42806df 2906 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
ba035df2
LP		 2907 }
2908
034c6ed7
LP		 2909 break;
2910
2911 case SERVICE_FINAL_SIGKILL:
f2341e0a 2912 log_unit_warning(UNIT(s), "Processes still around after final SIGKILL. Entering failed mode.");
f42806df 2913 service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
034c6ed7
LP		 2914 break;
2915
2916 case SERVICE_AUTO_RESTART:
f2341e0a 2917 log_unit_info(UNIT(s),
ef417cfd 2918 s->restart_usec > 0 ?
f2341e0a
LP		 2919 "Service hold-off time over, scheduling restart." :
2920 "Service has no hold-off time, scheduling restart.");
034c6ed7
LP		 2921 service_enter_restart(s);
2922 break;
2923
2924 default:
2925 assert_not_reached("Timeout at wrong time.");
2926 }
718db961
LP		 2927
2928 return 0;
2929}
2930
2931static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) {
2932 Service *s = SERVICE(userdata);
a7850c7d 2933 char t[FORMAT_TIMESPAN_MAX];
2787d83c 2934 usec_t watchdog_usec;
718db961
LP		 2935
2936 assert(s);
2937 assert(source == s->watchdog_event_source);
2938
2787d83c
M		 2939 watchdog_usec = service_get_watchdog_usec(s);
2940
f2341e0a 2941 log_unit_error(UNIT(s), "Watchdog timeout (limit %s)!",
2787d83c 2942 format_timespan(t, sizeof(t), watchdog_usec, 1));
8bb2d17d 2943
db2cb23b 2944 service_enter_signal(s, SERVICE_STOP_SIGABRT, SERVICE_FAILURE_WATCHDOG);
842129f5 2945
718db961 2946 return 0;
5cb5a6ff
LP		 2947}
2948
a354329f 2949static void service_notify_message(Unit *u, pid_t pid, char **tags, FDSet *fds) {
8c47c732 2950 Service *s = SERVICE(u);
308d72dc 2951 _cleanup_free_ char *cc = NULL;
30b5275a 2952 bool notify_dbus = false;
308d72dc 2953 const char *e;
8c47c732
LP		 2954
2955 assert(u);
2956
308d72dc 2957 cc = strv_join(tags, ", ");
da13d4d2 2958
c952c6ec 2959 if (s->notify_access == NOTIFY_NONE) {
f2341e0a 2960 log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception is disabled.", pid);
c952c6ec 2961 return;
34959677 2962 } else if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
336c6e46 2963 if (s->main_pid != 0)
f2341e0a 2964 log_unit_warning(u, "Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, pid, s->main_pid);
336c6e46 2965 else
f2341e0a 2966 log_unit_debug(u, "Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", pid);
c952c6ec 2967 return;
34959677
TG		 2968 } else
2969 log_unit_debug(u, "Got notification message from PID "PID_FMT" (%s)", pid, isempty(cc) ? "n/a" : cc);
c952c6ec 2970
8c47c732 2971 /* Interpret MAINPID= */
28849dba 2972 e = strv_find_startswith(tags, "MAINPID=");
5e56b378 2973 if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) {
28849dba 2974 if (parse_pid(e, &pid) < 0)
f2341e0a 2975 log_unit_warning(u, "Failed to parse MAINPID= field in notification message: %s", e);
8c47c732 2976 else {
5925dd3c 2977 service_set_main_pid(s, pid);
7400b9d2 2978 unit_watch_pid(UNIT(s), pid);
30b5275a 2979 notify_dbus = true;
8c47c732
LP		 2980 }
2981 }
2982
308d72dc
LP		 2983 /* Interpret RELOADING= */
2984 if (strv_find(tags, "RELOADING=1")) {
2985
308d72dc
LP		 2986 s->notify_state = NOTIFY_RELOADING;
2987
2988 if (s->state == SERVICE_RUNNING)
2989 service_enter_reload_by_notify(s);
2990
2991 notify_dbus = true;
2992 }
2993
8c47c732 2994 /* Interpret READY= */
308d72dc
LP		 2995 if (strv_find(tags, "READY=1")) {
2996
308d72dc
LP		 2997 s->notify_state = NOTIFY_READY;
2998
2999 /* Type=notify services inform us about completed
3000 * initialization with READY=1 */
3001 if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START)
3002 service_enter_start_post(s);
3003
3004 /* Sending READY=1 while we are reloading informs us
3005 * that the reloading is complete */
3006 if (s->state == SERVICE_RELOAD && s->control_pid == 0)
3007 service_enter_running(s, SERVICE_SUCCESS);
3008
3009 notify_dbus = true;
3010 }
3011
3012 /* Interpret STOPPING= */
3013 if (strv_find(tags, "STOPPING=1")) {
3014
308d72dc
LP		 3015 s->notify_state = NOTIFY_STOPPING;
3016
3017 if (s->state == SERVICE_RUNNING)
3018 service_enter_stop_by_notify(s);
3019
30b5275a 3020 notify_dbus = true;
8c47c732
LP		 3021 }
3022
3023 /* Interpret STATUS= */
28849dba 3024 e = strv_find_startswith(tags, "STATUS=");
7f110ff9 3025 if (e) {
28849dba 3026 _cleanup_free_ char *t = NULL;
8c47c732 3027
28849dba
LP		 3028 if (!isempty(e)) {
3029 if (!utf8_is_valid(e))
f2341e0a 3030 log_unit_warning(u, "Status message in notification message is not UTF-8 clean.");
28849dba 3031 else {
28849dba
LP		 3032 t = strdup(e);
3033 if (!t)
3034 log_oom();
3a2776bc 3035 }
28849dba 3036 }
8c47c732 3037
30b5275a 3038 if (!streq_ptr(s->status_text, t)) {
28849dba 3039
3a2776bc
LP		 3040 free(s->status_text);
3041 s->status_text = t;
28849dba
LP		 3042 t = NULL;
3043
30b5275a 3044 notify_dbus = true;
28849dba 3045 }
8c47c732 3046 }
842129f5 3047
4774e357 3048 /* Interpret ERRNO= */
28849dba 3049 e = strv_find_startswith(tags, "ERRNO=");
4774e357
MAA		 3050 if (e) {
3051 int status_errno;
3052
28849dba 3053 if (safe_atoi(e, &status_errno) < 0 || status_errno < 0)
f2341e0a 3054 log_unit_warning(u, "Failed to parse ERRNO= field in notification message: %s", e);
4774e357 3055 else {
4774e357
MAA		 3056 if (s->status_errno != status_errno) {
3057 s->status_errno = status_errno;
3058 notify_dbus = true;
3059 }
3060 }
3061 }
3062
6f285378 3063 /* Interpret WATCHDOG= */
1f6b4113 3064 if (strv_find(tags, "WATCHDOG=1"))
842129f5 3065 service_reset_watchdog(s);
c4e2ceae 3066
8dd4c05b
LP		 3067 if (strv_find(tags, "FDSTORE=1")) {
3068 const char *name;
3069
3070 name = strv_find_startswith(tags, "FDNAME=");
3071 if (name && !fdname_is_valid(name)) {
3072 log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring.");
3073 name = NULL;
3074 }
3075
3076 service_add_fd_store_set(s, fds, name);
3077 }
a354329f 3078
2787d83c
M		 3079 e = strv_find_startswith(tags, "WATCHDOG_USEC=");
3080 if (e) {
3081 usec_t watchdog_override_usec;
3082 if (safe_atou64(e, &watchdog_override_usec) < 0)
3083 log_unit_warning(u, "Failed to parse WATCHDOG_USEC=%s", e);
3084 else
3085 service_reset_watchdog_timeout(s, watchdog_override_usec);
3086 }
3087
c4e2ceae 3088 /* Notify clients about changed status or main pid */
30b5275a
LP		 3089 if (notify_dbus)
3090 unit_add_to_dbus_queue(u);
8c47c732
LP		 3091}
3092
7a7821c8 3093static int service_get_timeout(Unit *u, usec_t *timeout) {
68db7a3b 3094 Service *s = SERVICE(u);
7a7821c8 3095 uint64_t t;
68db7a3b
ZJS		 3096 int r;
3097
3098 if (!s->timer_event_source)
3099 return 0;
3100
7a7821c8 3101 r = sd_event_source_get_time(s->timer_event_source, &t);
68db7a3b
ZJS		 3102 if (r < 0)
3103 return r;
7a7821c8
LP		 3104 if (t == USEC_INFINITY)
3105 return 0;
68db7a3b 3106
7a7821c8 3107 *timeout = t;
68db7a3b
ZJS		 3108 return 1;
3109}
3110
05e343b7
LP		 3111static void service_bus_name_owner_change(
3112 Unit *u,
3113 const char *name,
3114 const char *old_owner,
3115 const char *new_owner) {
3116
3117 Service *s = SERVICE(u);
718db961 3118 int r;
05e343b7
LP		 3119
3120 assert(s);
3121 assert(name);
3122
3123 assert(streq(s->bus_name, name));
3124 assert(old_owner || new_owner);
3125
3126 if (old_owner && new_owner)
f2341e0a 3127 log_unit_debug(u, "D-Bus name %s changed owner from %s to %s", name, old_owner, new_owner);
05e343b7 3128 else if (old_owner)
f2341e0a 3129 log_unit_debug(u, "D-Bus name %s no longer registered by %s", name, old_owner);
05e343b7 3130 else
f2341e0a 3131 log_unit_debug(u, "D-Bus name %s now registered by %s", name, new_owner);
05e343b7
LP		 3132
3133 s->bus_name_good = !!new_owner;
3134
d8ccf5fd
DM		 3135 /* Track the current owner, so we can reconstruct changes after a daemon reload */
3136 r = free_and_strdup(&s->bus_name_owner, new_owner);
3137 if (r < 0) {
3138 log_unit_error_errno(u, r, "Unable to set new bus name owner %s: %m", new_owner);
3139 return;
3140 }
3141
05e343b7
LP		 3142 if (s->type == SERVICE_DBUS) {
3143
3144 /* service_enter_running() will figure out what to
3145 * do */
3146 if (s->state == SERVICE_RUNNING)
f42806df 3147 service_enter_running(s, SERVICE_SUCCESS);
05e343b7
LP		 3148 else if (s->state == SERVICE_START && new_owner)
3149 service_enter_start_post(s);
3150
3151 } else if (new_owner &&
3152 s->main_pid <= 0 &&
3153 (s->state == SERVICE_START ||
3154 s->state == SERVICE_START_POST ||
3155 s->state == SERVICE_RUNNING ||
3156 s->state == SERVICE_RELOAD)) {
3157
4afd3348 3158 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
718db961 3159 pid_t pid;
05e343b7 3160
718db961 3161 /* Try to acquire PID from bus service */
05e343b7 3162
056f95d0 3163 r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds);
5b12334d
LP		 3164 if (r >= 0)
3165 r = sd_bus_creds_get_pid(creds, &pid);
718db961 3166 if (r >= 0) {
f2341e0a 3167 log_unit_debug(u, "D-Bus name %s is now owned by process %u", name, (unsigned) pid);
05e343b7 3168
718db961
LP		 3169 service_set_main_pid(s, pid);
3170 unit_watch_pid(UNIT(s), pid);
3171 }
7400b9d2 3172 }
05e343b7
LP		 3173}
3174
16115b0a 3175int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) {
79a98c60
LP		 3176 _cleanup_free_ char *peer = NULL;
3177 int r;
57020a3a 3178
4f2d528d
LP		 3179 assert(s);
3180 assert(fd >= 0);
3181
7f2fbbff
LP		 3182 /* This is called by the socket code when instantiating a new service for a stream socket and the socket needs
3183 * to be configured. We take ownership of the passed fd on success. */
4f2d528d 3184
1124fe6f 3185 if (UNIT(s)->load_state != UNIT_LOADED)
4f2d528d
LP		 3186 return -EINVAL;
3187
3188 if (s->socket_fd >= 0)
3189 return -EBUSY;
3190
3191 if (s->state != SERVICE_DEAD)
3192 return -EAGAIN;
3193
366b7db4 3194 if (getpeername_pretty(fd, true, &peer) >= 0) {
79a98c60
LP		 3195
3196 if (UNIT(s)->description) {
3197 _cleanup_free_ char *a;
3198
3199 a = strjoin(UNIT(s)->description, " (", peer, ")", NULL);
3200 if (!a)
3201 return -ENOMEM;
3202
3203 r = unit_set_description(UNIT(s), a);
3204 } else
3205 r = unit_set_description(UNIT(s), peer);
3206
3207 if (r < 0)
3208 return r;
3209 }
3210
7f2fbbff
LP		 3211 r = unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
3212 if (r < 0)
3213 return r;
3214
4f2d528d 3215 s->socket_fd = fd;
16115b0a 3216 s->socket_fd_selinux_context_net = selinux_context_net;
6cf6bbc2 3217
57020a3a 3218 unit_ref_set(&s->accept_socket, UNIT(sock));
7f2fbbff 3219 return 0;
4f2d528d
LP		 3220}
3221
fdf20a31 3222static void service_reset_failed(Unit *u) {
5632e374
LP		 3223 Service *s = SERVICE(u);
3224
3225 assert(s);
3226
fdf20a31 3227 if (s->state == SERVICE_FAILED)
5632e374
LP		 3228 service_set_state(s, SERVICE_DEAD);
3229
f42806df
LP		 3230 s->result = SERVICE_SUCCESS;
3231 s->reload_result = SERVICE_SUCCESS;
5632e374
LP		 3232}
3233
718db961 3234static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
8a0867d6 3235 Service *s = SERVICE(u);
41efeaec 3236
814cc562 3237 return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
8a0867d6
LP		 3238}
3239
291d565a
LP		 3240static int service_main_pid(Unit *u) {
3241 Service *s = SERVICE(u);
3242
3243 assert(s);
3244
3245 return s->main_pid;
3246}
3247
3248static int service_control_pid(Unit *u) {
3249 Service *s = SERVICE(u);
3250
3251 assert(s);
3252
3253 return s->control_pid;
3254}
3255
94f04347 3256static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
525ee6f4
LP		 3257 [SERVICE_RESTART_NO] = "no",
3258 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
50caaedb 3259 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
6cfe2fde 3260 [SERVICE_RESTART_ON_ABNORMAL] = "on-abnormal",
dc99a976 3261 [SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog",
50caaedb 3262 [SERVICE_RESTART_ON_ABORT] = "on-abort",
6cfe2fde 3263 [SERVICE_RESTART_ALWAYS] = "always",
94f04347
LP		 3264};
3265
3266DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3267
3268static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
94f04347 3269 [SERVICE_SIMPLE] = "simple",
0d624a78 3270 [SERVICE_FORKING] = "forking",
34e9ba66 3271 [SERVICE_ONESHOT] = "oneshot",
8c47c732 3272 [SERVICE_DBUS] = "dbus",
f2b68789
LP		 3273 [SERVICE_NOTIFY] = "notify",
3274 [SERVICE_IDLE] = "idle"
94f04347
LP		 3275};
3276
3277DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3278
e537352b 3279static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
94f04347
LP		 3280 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3281 [SERVICE_EXEC_START] = "ExecStart",
3282 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3283 [SERVICE_EXEC_RELOAD] = "ExecReload",
3284 [SERVICE_EXEC_STOP] = "ExecStop",
3285 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3286};
3287
3288DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3289
c952c6ec
LP		 3290static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3291 [NOTIFY_NONE] = "none",
3292 [NOTIFY_MAIN] = "main",
3293 [NOTIFY_ALL] = "all"
3294};
3295
3296DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3297
308d72dc
LP		 3298static const char* const notify_state_table[_NOTIFY_STATE_MAX] = {
3299 [NOTIFY_UNKNOWN] = "unknown",
3300 [NOTIFY_READY] = "ready",
3301 [NOTIFY_RELOADING] = "reloading",
3302 [NOTIFY_STOPPING] = "stopping",
3303};
3304
3305DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState);
3306
f42806df
LP		 3307static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
3308 [SERVICE_SUCCESS] = "success",
3309 [SERVICE_FAILURE_RESOURCES] = "resources",
3310 [SERVICE_FAILURE_TIMEOUT] = "timeout",
3311 [SERVICE_FAILURE_EXIT_CODE] = "exit-code",
3312 [SERVICE_FAILURE_SIGNAL] = "signal",
bb242b7b 3313 [SERVICE_FAILURE_CORE_DUMP] = "core-dump",
8d1b002a 3314 [SERVICE_FAILURE_WATCHDOG] = "watchdog",
07299350 3315 [SERVICE_FAILURE_START_LIMIT_HIT] = "start-limit-hit",
f42806df
LP		 3316};
3317
3318DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
3319
87f0e418 3320const UnitVTable service_vtable = {
7d17cfbc 3321 .object_size = sizeof(Service),
718db961
LP		 3322 .exec_context_offset = offsetof(Service, exec_context),
3323 .cgroup_context_offset = offsetof(Service, cgroup_context),
3324 .kill_context_offset = offsetof(Service, kill_context),
613b411c 3325 .exec_runtime_offset = offsetof(Service, exec_runtime),
3ef63c31 3326
f975e971
LP		 3327 .sections =
3328 "Unit\0"
3329 "Service\0"
3330 "Install\0",
4ad49000 3331 .private_section = "Service",
71645aca 3332
034c6ed7
LP		 3333 .init = service_init,
3334 .done = service_done,
a16e1123 3335 .load = service_load,
a354329f 3336 .release_resources = service_release_resources,
a16e1123
LP		 3337
3338 .coldplug = service_coldplug,
034c6ed7 3339
5cb5a6ff
LP		 3340 .dump = service_dump,
3341
3342 .start = service_start,
3343 .stop = service_stop,
3344 .reload = service_reload,
3345
034c6ed7
LP		 3346 .can_reload = service_can_reload,
3347
8a0867d6
LP		 3348 .kill = service_kill,
3349
a16e1123
LP		 3350 .serialize = service_serialize,
3351 .deserialize_item = service_deserialize_item,
3352
5cb5a6ff 3353 .active_state = service_active_state,
10a94420 3354 .sub_state_to_string = service_sub_state_to_string,
5cb5a6ff 3355
701cc384 3356 .check_gc = service_check_gc,
701cc384 3357
034c6ed7 3358 .sigchld_event = service_sigchld_event,
2c4104f0 3359
fdf20a31 3360 .reset_failed = service_reset_failed,
5632e374 3361
4ad49000 3362 .notify_cgroup_empty = service_notify_cgroup_empty_event,
8c47c732 3363 .notify_message = service_notify_message,
8e274523 3364
291d565a
LP		 3365 .main_pid = service_main_pid,
3366 .control_pid = service_control_pid,
3367
05e343b7 3368 .bus_name_owner_change = service_bus_name_owner_change,
05e343b7 3369
718db961 3370 .bus_vtable = bus_service_vtable,
74c964d3
LP		 3371 .bus_set_property = bus_service_set_property,
3372 .bus_commit_properties = bus_service_commit_properties,
4139c1b2 3373
68db7a3b 3374 .get_timeout = service_get_timeout,
718db961
LP		 3375 .can_transient = true,
3376
c6918296
MS		 3377 .status_message_formats = {
3378 .starting_stopping = {
3379 [0] = "Starting %s...",
3380 [1] = "Stopping %s...",
3381 },
3382 .finished_start_job = {
3383 [JOB_DONE] = "Started %s.",
3384 [JOB_FAILED] = "Failed to start %s.",
c6918296
MS		 3385 },
3386 .finished_stop_job = {
3387 [JOB_DONE] = "Stopped %s.",
3388 [JOB_FAILED] = "Stopped (with error) %s.",
c6918296
MS		 3389 },
3390 },
5cb5a6ff 3391};
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