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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ | |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include <errno.h> | |
23 | #include <signal.h> | |
24 | #include <dirent.h> | |
25 | #include <unistd.h> | |
26 | #include <sys/reboot.h> | |
27 | ||
28 | #include "manager.h" | |
29 | #include "unit.h" | |
30 | #include "service.h" | |
31 | #include "load-fragment.h" | |
32 | #include "load-dropin.h" | |
33 | #include "log.h" | |
34 | #include "strv.h" | |
35 | #include "unit-name.h" | |
36 | #include "unit-printf.h" | |
37 | #include "dbus-service.h" | |
38 | #include "special.h" | |
39 | #include "dbus-common.h" | |
40 | #include "exit-status.h" | |
41 | #include "def.h" | |
42 | #include "path-util.h" | |
43 | #include "util.h" | |
44 | #include "utf8.h" | |
45 | #include "env-util.h" | |
46 | #include "fileio.h" | |
47 | ||
48 | #ifdef HAVE_SYSV_COMPAT | |
49 | ||
50 | #define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE) | |
51 | ||
52 | typedef enum RunlevelType { | |
53 | RUNLEVEL_UP, | |
54 | RUNLEVEL_DOWN | |
55 | } RunlevelType; | |
56 | ||
57 | static const struct { | |
58 | const char *path; | |
59 | const char *target; | |
60 | const RunlevelType type; | |
61 | } rcnd_table[] = { | |
62 | /* Standard SysV runlevels for start-up */ | |
63 | { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP }, | |
64 | { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP }, | |
65 | { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP }, | |
66 | { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP }, | |
67 | { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP }, | |
68 | ||
69 | /* Standard SysV runlevels for shutdown */ | |
70 | { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN }, | |
71 | { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN } | |
72 | ||
73 | /* Note that the order here matters, as we read the | |
74 | directories in this order, and we want to make sure that | |
75 | sysv_start_priority is known when we first load the | |
76 | unit. And that value we only know from S links. Hence | |
77 | UP must be read before DOWN */ | |
78 | }; | |
79 | ||
80 | #define RUNLEVELS_UP "12345" | |
81 | #endif | |
82 | ||
83 | static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { | |
84 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
85 | [SERVICE_START_PRE] = UNIT_ACTIVATING, | |
86 | [SERVICE_START] = UNIT_ACTIVATING, | |
87 | [SERVICE_START_POST] = UNIT_ACTIVATING, | |
88 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
89 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
90 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
91 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
92 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, | |
93 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
94 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
95 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
96 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
97 | [SERVICE_FAILED] = UNIT_FAILED, | |
98 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING | |
99 | }; | |
100 | ||
101 | /* For Type=idle we never want to delay any other jobs, hence we | |
102 | * consider idle jobs active as soon as we start working on them */ | |
103 | static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = { | |
104 | [SERVICE_DEAD] = UNIT_INACTIVE, | |
105 | [SERVICE_START_PRE] = UNIT_ACTIVE, | |
106 | [SERVICE_START] = UNIT_ACTIVE, | |
107 | [SERVICE_START_POST] = UNIT_ACTIVE, | |
108 | [SERVICE_RUNNING] = UNIT_ACTIVE, | |
109 | [SERVICE_EXITED] = UNIT_ACTIVE, | |
110 | [SERVICE_RELOAD] = UNIT_RELOADING, | |
111 | [SERVICE_STOP] = UNIT_DEACTIVATING, | |
112 | [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING, | |
113 | [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING, | |
114 | [SERVICE_STOP_POST] = UNIT_DEACTIVATING, | |
115 | [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING, | |
116 | [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING, | |
117 | [SERVICE_FAILED] = UNIT_FAILED, | |
118 | [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING | |
119 | }; | |
120 | ||
121 | static void service_init(Unit *u) { | |
122 | Service *s = SERVICE(u); | |
123 | ||
124 | assert(u); | |
125 | assert(u->load_state == UNIT_STUB); | |
126 | ||
127 | s->timeout_start_usec = DEFAULT_TIMEOUT_USEC; | |
128 | s->timeout_stop_usec = DEFAULT_TIMEOUT_USEC; | |
129 | s->restart_usec = DEFAULT_RESTART_USEC; | |
130 | s->type = _SERVICE_TYPE_INVALID; | |
131 | ||
132 | watch_init(&s->watchdog_watch); | |
133 | watch_init(&s->timer_watch); | |
134 | ||
135 | #ifdef HAVE_SYSV_COMPAT | |
136 | s->sysv_start_priority = -1; | |
137 | s->sysv_start_priority_from_rcnd = -1; | |
138 | #endif | |
139 | s->socket_fd = -1; | |
140 | s->guess_main_pid = true; | |
141 | ||
142 | exec_context_init(&s->exec_context); | |
143 | kill_context_init(&s->kill_context); | |
144 | cgroup_context_init(&s->cgroup_context); | |
145 | ||
146 | RATELIMIT_INIT(s->start_limit, 10*USEC_PER_SEC, 5); | |
147 | ||
148 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
149 | } | |
150 | ||
151 | static void service_unwatch_control_pid(Service *s) { | |
152 | assert(s); | |
153 | ||
154 | if (s->control_pid <= 0) | |
155 | return; | |
156 | ||
157 | unit_unwatch_pid(UNIT(s), s->control_pid); | |
158 | s->control_pid = 0; | |
159 | } | |
160 | ||
161 | static void service_unwatch_main_pid(Service *s) { | |
162 | assert(s); | |
163 | ||
164 | if (s->main_pid <= 0) | |
165 | return; | |
166 | ||
167 | unit_unwatch_pid(UNIT(s), s->main_pid); | |
168 | s->main_pid = 0; | |
169 | } | |
170 | ||
171 | static void service_unwatch_pid_file(Service *s) { | |
172 | if (!s->pid_file_pathspec) | |
173 | return; | |
174 | ||
175 | log_debug_unit(UNIT(s)->id, "Stopping watch for %s's PID file %s", | |
176 | UNIT(s)->id, s->pid_file_pathspec->path); | |
177 | path_spec_unwatch(s->pid_file_pathspec, UNIT(s)); | |
178 | path_spec_done(s->pid_file_pathspec); | |
179 | free(s->pid_file_pathspec); | |
180 | s->pid_file_pathspec = NULL; | |
181 | } | |
182 | ||
183 | static int service_set_main_pid(Service *s, pid_t pid) { | |
184 | pid_t ppid; | |
185 | ||
186 | assert(s); | |
187 | ||
188 | if (pid <= 1) | |
189 | return -EINVAL; | |
190 | ||
191 | if (pid == getpid()) | |
192 | return -EINVAL; | |
193 | ||
194 | s->main_pid = pid; | |
195 | s->main_pid_known = true; | |
196 | ||
197 | if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) { | |
198 | log_warning_unit(UNIT(s)->id, | |
199 | "%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.", | |
200 | UNIT(s)->id, (unsigned long) pid); | |
201 | ||
202 | s->main_pid_alien = true; | |
203 | } else | |
204 | s->main_pid_alien = false; | |
205 | ||
206 | exec_status_start(&s->main_exec_status, pid); | |
207 | ||
208 | return 0; | |
209 | } | |
210 | ||
211 | static void service_close_socket_fd(Service *s) { | |
212 | assert(s); | |
213 | ||
214 | if (s->socket_fd < 0) | |
215 | return; | |
216 | ||
217 | close_nointr_nofail(s->socket_fd); | |
218 | s->socket_fd = -1; | |
219 | } | |
220 | ||
221 | static void service_connection_unref(Service *s) { | |
222 | assert(s); | |
223 | ||
224 | if (!UNIT_ISSET(s->accept_socket)) | |
225 | return; | |
226 | ||
227 | socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket))); | |
228 | unit_ref_unset(&s->accept_socket); | |
229 | } | |
230 | ||
231 | static void service_stop_watchdog(Service *s) { | |
232 | assert(s); | |
233 | ||
234 | unit_unwatch_timer(UNIT(s), &s->watchdog_watch); | |
235 | s->watchdog_timestamp.realtime = 0; | |
236 | s->watchdog_timestamp.monotonic = 0; | |
237 | } | |
238 | ||
239 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f); | |
240 | ||
241 | static void service_handle_watchdog(Service *s) { | |
242 | usec_t offset; | |
243 | int r; | |
244 | ||
245 | assert(s); | |
246 | ||
247 | if (s->watchdog_usec == 0) | |
248 | return; | |
249 | ||
250 | offset = now(CLOCK_MONOTONIC) - s->watchdog_timestamp.monotonic; | |
251 | if (offset >= s->watchdog_usec) { | |
252 | log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id); | |
253 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_WATCHDOG); | |
254 | return; | |
255 | } | |
256 | ||
257 | r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->watchdog_usec - offset, &s->watchdog_watch); | |
258 | if (r < 0) | |
259 | log_warning_unit(UNIT(s)->id, | |
260 | "%s failed to install watchdog timer: %s", | |
261 | UNIT(s)->id, strerror(-r)); | |
262 | } | |
263 | ||
264 | static void service_reset_watchdog(Service *s) { | |
265 | assert(s); | |
266 | ||
267 | dual_timestamp_get(&s->watchdog_timestamp); | |
268 | service_handle_watchdog(s); | |
269 | } | |
270 | ||
271 | static void service_done(Unit *u) { | |
272 | Service *s = SERVICE(u); | |
273 | ||
274 | assert(s); | |
275 | ||
276 | free(s->pid_file); | |
277 | s->pid_file = NULL; | |
278 | ||
279 | #ifdef HAVE_SYSV_COMPAT | |
280 | free(s->sysv_runlevels); | |
281 | s->sysv_runlevels = NULL; | |
282 | #endif | |
283 | ||
284 | free(s->status_text); | |
285 | s->status_text = NULL; | |
286 | ||
287 | cgroup_context_done(&s->cgroup_context); | |
288 | exec_context_done(&s->exec_context, manager_is_reloading_or_reexecuting(u->manager)); | |
289 | exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX); | |
290 | s->control_command = NULL; | |
291 | s->main_command = NULL; | |
292 | ||
293 | set_free(s->restart_ignore_status.code); | |
294 | s->restart_ignore_status.code = NULL; | |
295 | set_free(s->restart_ignore_status.signal); | |
296 | s->restart_ignore_status.signal = NULL; | |
297 | ||
298 | set_free(s->success_status.code); | |
299 | s->success_status.code = NULL; | |
300 | set_free(s->success_status.signal); | |
301 | s->success_status.signal = NULL; | |
302 | ||
303 | /* This will leak a process, but at least no memory or any of | |
304 | * our resources */ | |
305 | service_unwatch_main_pid(s); | |
306 | service_unwatch_control_pid(s); | |
307 | service_unwatch_pid_file(s); | |
308 | ||
309 | if (s->bus_name) { | |
310 | unit_unwatch_bus_name(u, s->bus_name); | |
311 | free(s->bus_name); | |
312 | s->bus_name = NULL; | |
313 | } | |
314 | ||
315 | service_close_socket_fd(s); | |
316 | service_connection_unref(s); | |
317 | ||
318 | unit_ref_unset(&s->accept_socket); | |
319 | ||
320 | service_stop_watchdog(s); | |
321 | ||
322 | unit_unwatch_timer(u, &s->timer_watch); | |
323 | } | |
324 | ||
325 | #ifdef HAVE_SYSV_COMPAT | |
326 | static char *sysv_translate_name(const char *name) { | |
327 | char *r; | |
328 | ||
329 | r = new(char, strlen(name) + sizeof(".service")); | |
330 | if (!r) | |
331 | return NULL; | |
332 | ||
333 | if (endswith(name, ".sh")) | |
334 | /* Drop .sh suffix */ | |
335 | strcpy(stpcpy(r, name) - 3, ".service"); | |
336 | else | |
337 | /* Normal init script name */ | |
338 | strcpy(stpcpy(r, name), ".service"); | |
339 | ||
340 | return r; | |
341 | } | |
342 | ||
343 | static int sysv_translate_facility(const char *name, const char *filename, char **_r) { | |
344 | ||
345 | /* We silently ignore the $ prefix here. According to the LSB | |
346 | * spec it simply indicates whether something is a | |
347 | * standardized name or a distribution-specific one. Since we | |
348 | * just follow what already exists and do not introduce new | |
349 | * uses or names we don't care who introduced a new name. */ | |
350 | ||
351 | static const char * const table[] = { | |
352 | /* LSB defined facilities */ | |
353 | "local_fs", NULL, | |
354 | "network", SPECIAL_NETWORK_TARGET, | |
355 | "named", SPECIAL_NSS_LOOKUP_TARGET, | |
356 | "portmap", SPECIAL_RPCBIND_TARGET, | |
357 | "remote_fs", SPECIAL_REMOTE_FS_TARGET, | |
358 | "syslog", NULL, | |
359 | "time", SPECIAL_TIME_SYNC_TARGET, | |
360 | }; | |
361 | ||
362 | unsigned i; | |
363 | char *r; | |
364 | const char *n; | |
365 | ||
366 | assert(name); | |
367 | assert(_r); | |
368 | ||
369 | n = *name == '$' ? name + 1 : name; | |
370 | ||
371 | for (i = 0; i < ELEMENTSOF(table); i += 2) { | |
372 | ||
373 | if (!streq(table[i], n)) | |
374 | continue; | |
375 | ||
376 | if (!table[i+1]) | |
377 | return 0; | |
378 | ||
379 | r = strdup(table[i+1]); | |
380 | if (!r) | |
381 | return log_oom(); | |
382 | ||
383 | goto finish; | |
384 | } | |
385 | ||
386 | /* If we don't know this name, fallback heuristics to figure | |
387 | * out whether something is a target or a service alias. */ | |
388 | ||
389 | if (*name == '$') { | |
390 | if (!unit_prefix_is_valid(n)) | |
391 | return -EINVAL; | |
392 | ||
393 | /* Facilities starting with $ are most likely targets */ | |
394 | r = unit_name_build(n, NULL, ".target"); | |
395 | } else if (filename && streq(name, filename)) | |
396 | /* Names equaling the file name of the services are redundant */ | |
397 | return 0; | |
398 | else | |
399 | /* Everything else we assume to be normal service names */ | |
400 | r = sysv_translate_name(n); | |
401 | ||
402 | if (!r) | |
403 | return -ENOMEM; | |
404 | ||
405 | finish: | |
406 | *_r = r; | |
407 | ||
408 | return 1; | |
409 | } | |
410 | ||
411 | static int sysv_fix_order(Service *s) { | |
412 | Unit *other; | |
413 | int r; | |
414 | ||
415 | assert(s); | |
416 | ||
417 | if (s->sysv_start_priority < 0) | |
418 | return 0; | |
419 | ||
420 | /* For each pair of services where at least one lacks a LSB | |
421 | * header, we use the start priority value to order things. */ | |
422 | ||
423 | LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) { | |
424 | Service *t; | |
425 | UnitDependency d; | |
426 | bool special_s, special_t; | |
427 | ||
428 | t = SERVICE(other); | |
429 | ||
430 | if (s == t) | |
431 | continue; | |
432 | ||
433 | if (UNIT(t)->load_state != UNIT_LOADED) | |
434 | continue; | |
435 | ||
436 | if (t->sysv_start_priority < 0) | |
437 | continue; | |
438 | ||
439 | /* If both units have modern headers we don't care | |
440 | * about the priorities */ | |
441 | if ((UNIT(s)->fragment_path || s->sysv_has_lsb) && | |
442 | (UNIT(t)->fragment_path || t->sysv_has_lsb)) | |
443 | continue; | |
444 | ||
445 | special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels); | |
446 | special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels); | |
447 | ||
448 | if (special_t && !special_s) | |
449 | d = UNIT_AFTER; | |
450 | else if (special_s && !special_t) | |
451 | d = UNIT_BEFORE; | |
452 | else if (t->sysv_start_priority < s->sysv_start_priority) | |
453 | d = UNIT_AFTER; | |
454 | else if (t->sysv_start_priority > s->sysv_start_priority) | |
455 | d = UNIT_BEFORE; | |
456 | else | |
457 | continue; | |
458 | ||
459 | /* FIXME: Maybe we should compare the name here lexicographically? */ | |
460 | ||
461 | if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0) | |
462 | return r; | |
463 | } | |
464 | ||
465 | return 0; | |
466 | } | |
467 | ||
468 | static ExecCommand *exec_command_new(const char *path, const char *arg1) { | |
469 | ExecCommand *c; | |
470 | ||
471 | if (!(c = new0(ExecCommand, 1))) | |
472 | return NULL; | |
473 | ||
474 | if (!(c->path = strdup(path))) { | |
475 | free(c); | |
476 | return NULL; | |
477 | } | |
478 | ||
479 | if (!(c->argv = strv_new(path, arg1, NULL))) { | |
480 | free(c->path); | |
481 | free(c); | |
482 | return NULL; | |
483 | } | |
484 | ||
485 | return c; | |
486 | } | |
487 | ||
488 | static int sysv_exec_commands(Service *s, const bool supports_reload) { | |
489 | ExecCommand *c; | |
490 | ||
491 | assert(s); | |
492 | assert(s->is_sysv); | |
493 | assert(UNIT(s)->source_path); | |
494 | ||
495 | c = exec_command_new(UNIT(s)->source_path, "start"); | |
496 | if (!c) | |
497 | return -ENOMEM; | |
498 | exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c); | |
499 | ||
500 | c = exec_command_new(UNIT(s)->source_path, "stop"); | |
501 | if (!c) | |
502 | return -ENOMEM; | |
503 | exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c); | |
504 | ||
505 | if (supports_reload) { | |
506 | c = exec_command_new(UNIT(s)->source_path, "reload"); | |
507 | if (!c) | |
508 | return -ENOMEM; | |
509 | exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c); | |
510 | } | |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
515 | static bool usage_contains_reload(const char *line) { | |
516 | return (strcasestr(line, "{reload|") || | |
517 | strcasestr(line, "{reload}") || | |
518 | strcasestr(line, "{reload\"") || | |
519 | strcasestr(line, "|reload|") || | |
520 | strcasestr(line, "|reload}") || | |
521 | strcasestr(line, "|reload\"")); | |
522 | } | |
523 | ||
524 | static int service_load_sysv_path(Service *s, const char *path) { | |
525 | FILE *f; | |
526 | Unit *u; | |
527 | unsigned line = 0; | |
528 | int r; | |
529 | enum { | |
530 | NORMAL, | |
531 | DESCRIPTION, | |
532 | LSB, | |
533 | LSB_DESCRIPTION, | |
534 | USAGE_CONTINUATION | |
535 | } state = NORMAL; | |
536 | char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description; | |
537 | struct stat st; | |
538 | bool supports_reload = false; | |
539 | ||
540 | assert(s); | |
541 | assert(path); | |
542 | ||
543 | u = UNIT(s); | |
544 | ||
545 | f = fopen(path, "re"); | |
546 | if (!f) { | |
547 | r = errno == ENOENT ? 0 : -errno; | |
548 | goto finish; | |
549 | } | |
550 | ||
551 | if (fstat(fileno(f), &st) < 0) { | |
552 | r = -errno; | |
553 | goto finish; | |
554 | } | |
555 | ||
556 | free(u->source_path); | |
557 | u->source_path = strdup(path); | |
558 | if (!u->source_path) { | |
559 | r = -ENOMEM; | |
560 | goto finish; | |
561 | } | |
562 | u->source_mtime = timespec_load(&st.st_mtim); | |
563 | ||
564 | if (null_or_empty(&st)) { | |
565 | u->load_state = UNIT_MASKED; | |
566 | r = 0; | |
567 | goto finish; | |
568 | } | |
569 | ||
570 | s->is_sysv = true; | |
571 | ||
572 | while (!feof(f)) { | |
573 | char l[LINE_MAX], *t; | |
574 | ||
575 | if (!fgets(l, sizeof(l), f)) { | |
576 | if (feof(f)) | |
577 | break; | |
578 | ||
579 | r = -errno; | |
580 | log_error_unit(u->id, | |
581 | "Failed to read configuration file '%s': %s", | |
582 | path, strerror(-r)); | |
583 | goto finish; | |
584 | } | |
585 | ||
586 | line++; | |
587 | ||
588 | t = strstrip(l); | |
589 | if (*t != '#') { | |
590 | /* Try to figure out whether this init script supports | |
591 | * the reload operation. This heuristic looks for | |
592 | * "Usage" lines which include the reload option. */ | |
593 | if ( state == USAGE_CONTINUATION || | |
594 | (state == NORMAL && strcasestr(t, "usage"))) { | |
595 | if (usage_contains_reload(t)) { | |
596 | supports_reload = true; | |
597 | state = NORMAL; | |
598 | } else if (t[strlen(t)-1] == '\\') | |
599 | state = USAGE_CONTINUATION; | |
600 | else | |
601 | state = NORMAL; | |
602 | } | |
603 | ||
604 | continue; | |
605 | } | |
606 | ||
607 | if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) { | |
608 | state = LSB; | |
609 | s->sysv_has_lsb = true; | |
610 | continue; | |
611 | } | |
612 | ||
613 | if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) { | |
614 | state = NORMAL; | |
615 | continue; | |
616 | } | |
617 | ||
618 | t++; | |
619 | t += strspn(t, WHITESPACE); | |
620 | ||
621 | if (state == NORMAL) { | |
622 | ||
623 | /* Try to parse Red Hat style chkconfig headers */ | |
624 | ||
625 | if (startswith_no_case(t, "chkconfig:")) { | |
626 | int start_priority; | |
627 | char runlevels[16], *k; | |
628 | ||
629 | state = NORMAL; | |
630 | ||
631 | if (sscanf(t+10, "%15s %i %*i", | |
632 | runlevels, | |
633 | &start_priority) != 2) { | |
634 | ||
635 | log_warning_unit(u->id, | |
636 | "[%s:%u] Failed to parse chkconfig line. Ignoring.", | |
637 | path, line); | |
638 | continue; | |
639 | } | |
640 | ||
641 | /* A start priority gathered from the | |
642 | * symlink farms is preferred over the | |
643 | * data from the LSB header. */ | |
644 | if (start_priority < 0 || start_priority > 99) | |
645 | log_warning_unit(u->id, | |
646 | "[%s:%u] Start priority out of range. Ignoring.", | |
647 | path, line); | |
648 | else | |
649 | s->sysv_start_priority = start_priority; | |
650 | ||
651 | char_array_0(runlevels); | |
652 | k = delete_chars(runlevels, WHITESPACE "-"); | |
653 | ||
654 | if (k[0]) { | |
655 | char *d; | |
656 | ||
657 | if (!(d = strdup(k))) { | |
658 | r = -ENOMEM; | |
659 | goto finish; | |
660 | } | |
661 | ||
662 | free(s->sysv_runlevels); | |
663 | s->sysv_runlevels = d; | |
664 | } | |
665 | ||
666 | } else if (startswith_no_case(t, "description:")) { | |
667 | ||
668 | size_t k = strlen(t); | |
669 | char *d; | |
670 | const char *j; | |
671 | ||
672 | if (t[k-1] == '\\') { | |
673 | state = DESCRIPTION; | |
674 | t[k-1] = 0; | |
675 | } | |
676 | ||
677 | if ((j = strstrip(t+12)) && *j) { | |
678 | if (!(d = strdup(j))) { | |
679 | r = -ENOMEM; | |
680 | goto finish; | |
681 | } | |
682 | } else | |
683 | d = NULL; | |
684 | ||
685 | free(chkconfig_description); | |
686 | chkconfig_description = d; | |
687 | ||
688 | } else if (startswith_no_case(t, "pidfile:")) { | |
689 | ||
690 | char *fn; | |
691 | ||
692 | state = NORMAL; | |
693 | ||
694 | fn = strstrip(t+8); | |
695 | if (!path_is_absolute(fn)) { | |
696 | log_warning_unit(u->id, | |
697 | "[%s:%u] PID file not absolute. Ignoring.", | |
698 | path, line); | |
699 | continue; | |
700 | } | |
701 | ||
702 | if (!(fn = strdup(fn))) { | |
703 | r = -ENOMEM; | |
704 | goto finish; | |
705 | } | |
706 | ||
707 | free(s->pid_file); | |
708 | s->pid_file = fn; | |
709 | } | |
710 | ||
711 | } else if (state == DESCRIPTION) { | |
712 | ||
713 | /* Try to parse Red Hat style description | |
714 | * continuation */ | |
715 | ||
716 | size_t k = strlen(t); | |
717 | char *j; | |
718 | ||
719 | if (t[k-1] == '\\') | |
720 | t[k-1] = 0; | |
721 | else | |
722 | state = NORMAL; | |
723 | ||
724 | if ((j = strstrip(t)) && *j) { | |
725 | char *d = NULL; | |
726 | ||
727 | if (chkconfig_description) | |
728 | d = strjoin(chkconfig_description, " ", j, NULL); | |
729 | else | |
730 | d = strdup(j); | |
731 | ||
732 | if (!d) { | |
733 | r = -ENOMEM; | |
734 | goto finish; | |
735 | } | |
736 | ||
737 | free(chkconfig_description); | |
738 | chkconfig_description = d; | |
739 | } | |
740 | ||
741 | } else if (state == LSB || state == LSB_DESCRIPTION) { | |
742 | ||
743 | if (startswith_no_case(t, "Provides:")) { | |
744 | char *i, *w; | |
745 | size_t z; | |
746 | ||
747 | state = LSB; | |
748 | ||
749 | FOREACH_WORD_QUOTED(w, z, t+9, i) { | |
750 | char *n, *m; | |
751 | ||
752 | if (!(n = strndup(w, z))) { | |
753 | r = -ENOMEM; | |
754 | goto finish; | |
755 | } | |
756 | ||
757 | r = sysv_translate_facility(n, path_get_file_name(path), &m); | |
758 | free(n); | |
759 | ||
760 | if (r < 0) | |
761 | goto finish; | |
762 | ||
763 | if (r == 0) | |
764 | continue; | |
765 | ||
766 | if (unit_name_to_type(m) == UNIT_SERVICE) | |
767 | r = unit_merge_by_name(u, m); | |
768 | else | |
769 | /* NB: SysV targets | |
770 | * which are provided | |
771 | * by a service are | |
772 | * pulled in by the | |
773 | * services, as an | |
774 | * indication that the | |
775 | * generic service is | |
776 | * now available. This | |
777 | * is strictly | |
778 | * one-way. The | |
779 | * targets do NOT pull | |
780 | * in the SysV | |
781 | * services! */ | |
782 | r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true); | |
783 | ||
784 | if (r < 0) | |
785 | log_error_unit(u->id, | |
786 | "[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", | |
787 | path, line, m, strerror(-r)); | |
788 | ||
789 | free(m); | |
790 | } | |
791 | ||
792 | } else if (startswith_no_case(t, "Required-Start:") || | |
793 | startswith_no_case(t, "Should-Start:") || | |
794 | startswith_no_case(t, "X-Start-Before:") || | |
795 | startswith_no_case(t, "X-Start-After:")) { | |
796 | char *i, *w; | |
797 | size_t z; | |
798 | ||
799 | state = LSB; | |
800 | ||
801 | FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) { | |
802 | char *n, *m; | |
803 | ||
804 | if (!(n = strndup(w, z))) { | |
805 | r = -ENOMEM; | |
806 | goto finish; | |
807 | } | |
808 | ||
809 | r = sysv_translate_facility(n, path_get_file_name(path), &m); | |
810 | if (r < 0) { | |
811 | log_error_unit(u->id, | |
812 | "[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", | |
813 | path, line, n, strerror(-r)); | |
814 | free(n); | |
815 | continue; | |
816 | } | |
817 | ||
818 | free(n); | |
819 | ||
820 | if (r == 0) | |
821 | continue; | |
822 | ||
823 | r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true); | |
824 | ||
825 | if (r < 0) | |
826 | log_error_unit(u->id, "[%s:%u] Failed to add dependency on %s, ignoring: %s", | |
827 | path, line, m, strerror(-r)); | |
828 | ||
829 | free(m); | |
830 | } | |
831 | } else if (startswith_no_case(t, "Default-Start:")) { | |
832 | char *k, *d; | |
833 | ||
834 | state = LSB; | |
835 | ||
836 | k = delete_chars(t+14, WHITESPACE "-"); | |
837 | ||
838 | if (k[0] != 0) { | |
839 | if (!(d = strdup(k))) { | |
840 | r = -ENOMEM; | |
841 | goto finish; | |
842 | } | |
843 | ||
844 | free(s->sysv_runlevels); | |
845 | s->sysv_runlevels = d; | |
846 | } | |
847 | ||
848 | } else if (startswith_no_case(t, "Description:")) { | |
849 | char *d, *j; | |
850 | ||
851 | state = LSB_DESCRIPTION; | |
852 | ||
853 | if ((j = strstrip(t+12)) && *j) { | |
854 | if (!(d = strdup(j))) { | |
855 | r = -ENOMEM; | |
856 | goto finish; | |
857 | } | |
858 | } else | |
859 | d = NULL; | |
860 | ||
861 | free(long_description); | |
862 | long_description = d; | |
863 | ||
864 | } else if (startswith_no_case(t, "Short-Description:")) { | |
865 | char *d, *j; | |
866 | ||
867 | state = LSB; | |
868 | ||
869 | if ((j = strstrip(t+18)) && *j) { | |
870 | if (!(d = strdup(j))) { | |
871 | r = -ENOMEM; | |
872 | goto finish; | |
873 | } | |
874 | } else | |
875 | d = NULL; | |
876 | ||
877 | free(short_description); | |
878 | short_description = d; | |
879 | ||
880 | } else if (state == LSB_DESCRIPTION) { | |
881 | ||
882 | if (startswith(l, "#\t") || startswith(l, "# ")) { | |
883 | char *j; | |
884 | ||
885 | if ((j = strstrip(t)) && *j) { | |
886 | char *d = NULL; | |
887 | ||
888 | if (long_description) | |
889 | d = strjoin(long_description, " ", t, NULL); | |
890 | else | |
891 | d = strdup(j); | |
892 | ||
893 | if (!d) { | |
894 | r = -ENOMEM; | |
895 | goto finish; | |
896 | } | |
897 | ||
898 | free(long_description); | |
899 | long_description = d; | |
900 | } | |
901 | ||
902 | } else | |
903 | state = LSB; | |
904 | } | |
905 | } | |
906 | } | |
907 | ||
908 | if ((r = sysv_exec_commands(s, supports_reload)) < 0) | |
909 | goto finish; | |
910 | ||
911 | if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) { | |
912 | /* If there a runlevels configured for this service | |
913 | * but none of the standard ones, then we assume this | |
914 | * is some special kind of service (which might be | |
915 | * needed for early boot) and don't create any links | |
916 | * to it. */ | |
917 | ||
918 | UNIT(s)->default_dependencies = false; | |
919 | ||
920 | /* Don't timeout special services during boot (like fsck) */ | |
921 | s->timeout_start_usec = 0; | |
922 | s->timeout_stop_usec = 0; | |
923 | } else { | |
924 | s->timeout_start_usec = DEFAULT_SYSV_TIMEOUT_USEC; | |
925 | s->timeout_stop_usec = DEFAULT_SYSV_TIMEOUT_USEC; | |
926 | } | |
927 | ||
928 | /* Special setting for all SysV services */ | |
929 | s->type = SERVICE_FORKING; | |
930 | s->remain_after_exit = !s->pid_file; | |
931 | s->guess_main_pid = false; | |
932 | s->restart = SERVICE_RESTART_NO; | |
933 | s->exec_context.ignore_sigpipe = false; | |
934 | s->kill_context.kill_mode = KILL_PROCESS; | |
935 | ||
936 | /* We use the long description only if | |
937 | * no short description is set. */ | |
938 | ||
939 | if (short_description) | |
940 | description = short_description; | |
941 | else if (chkconfig_description) | |
942 | description = chkconfig_description; | |
943 | else if (long_description) | |
944 | description = long_description; | |
945 | else | |
946 | description = NULL; | |
947 | ||
948 | if (description) { | |
949 | char *d; | |
950 | ||
951 | if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) { | |
952 | r = -ENOMEM; | |
953 | goto finish; | |
954 | } | |
955 | ||
956 | u->description = d; | |
957 | } | |
958 | ||
959 | /* The priority that has been set in /etc/rcN.d/ hierarchies | |
960 | * takes precedence over what is stored as default in the LSB | |
961 | * header */ | |
962 | if (s->sysv_start_priority_from_rcnd >= 0) | |
963 | s->sysv_start_priority = s->sysv_start_priority_from_rcnd; | |
964 | ||
965 | u->load_state = UNIT_LOADED; | |
966 | r = 0; | |
967 | ||
968 | finish: | |
969 | ||
970 | if (f) | |
971 | fclose(f); | |
972 | ||
973 | free(short_description); | |
974 | free(long_description); | |
975 | free(chkconfig_description); | |
976 | ||
977 | return r; | |
978 | } | |
979 | ||
980 | static int service_load_sysv_name(Service *s, const char *name) { | |
981 | char **p; | |
982 | ||
983 | assert(s); | |
984 | assert(name); | |
985 | ||
986 | /* For SysV services we strip the *.sh suffixes. */ | |
987 | if (endswith(name, ".sh.service")) | |
988 | return -ENOENT; | |
989 | ||
990 | STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) { | |
991 | char *path; | |
992 | int r; | |
993 | ||
994 | path = strjoin(*p, "/", name, NULL); | |
995 | if (!path) | |
996 | return -ENOMEM; | |
997 | ||
998 | assert(endswith(path, ".service")); | |
999 | path[strlen(path)-8] = 0; | |
1000 | ||
1001 | r = service_load_sysv_path(s, path); | |
1002 | ||
1003 | if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) { | |
1004 | /* Try *.sh source'able init scripts */ | |
1005 | strcat(path, ".sh"); | |
1006 | r = service_load_sysv_path(s, path); | |
1007 | } | |
1008 | free(path); | |
1009 | ||
1010 | if (r < 0) | |
1011 | return r; | |
1012 | ||
1013 | if (UNIT(s)->load_state != UNIT_STUB) | |
1014 | break; | |
1015 | } | |
1016 | ||
1017 | return 0; | |
1018 | } | |
1019 | ||
1020 | static int service_load_sysv(Service *s) { | |
1021 | const char *t; | |
1022 | Iterator i; | |
1023 | int r; | |
1024 | ||
1025 | assert(s); | |
1026 | ||
1027 | /* Load service data from SysV init scripts, preferably with | |
1028 | * LSB headers ... */ | |
1029 | ||
1030 | if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path)) | |
1031 | return 0; | |
1032 | ||
1033 | if ((t = UNIT(s)->id)) | |
1034 | if ((r = service_load_sysv_name(s, t)) < 0) | |
1035 | return r; | |
1036 | ||
1037 | if (UNIT(s)->load_state == UNIT_STUB) | |
1038 | SET_FOREACH(t, UNIT(s)->names, i) { | |
1039 | if (t == UNIT(s)->id) | |
1040 | continue; | |
1041 | ||
1042 | if ((r = service_load_sysv_name(s, t)) < 0) | |
1043 | return r; | |
1044 | ||
1045 | if (UNIT(s)->load_state != UNIT_STUB) | |
1046 | break; | |
1047 | } | |
1048 | ||
1049 | return 0; | |
1050 | } | |
1051 | #endif | |
1052 | ||
1053 | static int fsck_fix_order(Service *s) { | |
1054 | Unit *other; | |
1055 | int r; | |
1056 | ||
1057 | assert(s); | |
1058 | ||
1059 | if (s->fsck_passno <= 0) | |
1060 | return 0; | |
1061 | ||
1062 | /* For each pair of services where both have an fsck priority | |
1063 | * we order things based on it. */ | |
1064 | ||
1065 | LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) { | |
1066 | Service *t; | |
1067 | UnitDependency d; | |
1068 | ||
1069 | t = SERVICE(other); | |
1070 | ||
1071 | if (s == t) | |
1072 | continue; | |
1073 | ||
1074 | if (UNIT(t)->load_state != UNIT_LOADED) | |
1075 | continue; | |
1076 | ||
1077 | if (t->fsck_passno <= 0) | |
1078 | continue; | |
1079 | ||
1080 | if (t->fsck_passno < s->fsck_passno) | |
1081 | d = UNIT_AFTER; | |
1082 | else if (t->fsck_passno > s->fsck_passno) | |
1083 | d = UNIT_BEFORE; | |
1084 | else | |
1085 | continue; | |
1086 | ||
1087 | r = unit_add_dependency(UNIT(s), d, UNIT(t), true); | |
1088 | if (r < 0) | |
1089 | return r; | |
1090 | } | |
1091 | ||
1092 | return 0; | |
1093 | } | |
1094 | ||
1095 | static int service_verify(Service *s) { | |
1096 | assert(s); | |
1097 | ||
1098 | if (UNIT(s)->load_state != UNIT_LOADED) | |
1099 | return 0; | |
1100 | ||
1101 | if (!s->exec_command[SERVICE_EXEC_START]) { | |
1102 | log_error_unit(UNIT(s)->id, | |
1103 | "%s lacks ExecStart setting. Refusing.", UNIT(s)->id); | |
1104 | return -EINVAL; | |
1105 | } | |
1106 | ||
1107 | if (s->type != SERVICE_ONESHOT && | |
1108 | s->exec_command[SERVICE_EXEC_START]->command_next) { | |
1109 | log_error_unit(UNIT(s)->id, | |
1110 | "%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id); | |
1111 | return -EINVAL; | |
1112 | } | |
1113 | ||
1114 | if (s->type == SERVICE_DBUS && !s->bus_name) { | |
1115 | log_error_unit(UNIT(s)->id, | |
1116 | "%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id); | |
1117 | return -EINVAL; | |
1118 | } | |
1119 | ||
1120 | if (s->bus_name && s->type != SERVICE_DBUS) | |
1121 | log_warning_unit(UNIT(s)->id, | |
1122 | "%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id); | |
1123 | ||
1124 | if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) { | |
1125 | log_error_unit(UNIT(s)->id, | |
1126 | "%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id); | |
1127 | return -EINVAL; | |
1128 | } | |
1129 | ||
1130 | return 0; | |
1131 | } | |
1132 | ||
1133 | static int service_add_default_dependencies(Service *s) { | |
1134 | int r; | |
1135 | ||
1136 | assert(s); | |
1137 | ||
1138 | /* Add a number of automatic dependencies useful for the | |
1139 | * majority of services. */ | |
1140 | ||
1141 | /* First, pull in base system */ | |
1142 | if (UNIT(s)->manager->running_as == SYSTEMD_SYSTEM) { | |
1143 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, | |
1144 | SPECIAL_BASIC_TARGET, NULL, true); | |
1145 | if (r < 0) | |
1146 | return r; | |
1147 | ||
1148 | } else if (UNIT(s)->manager->running_as == SYSTEMD_USER) { | |
1149 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, | |
1150 | SPECIAL_SOCKETS_TARGET, NULL, true); | |
1151 | if (r < 0) | |
1152 | return r; | |
1153 | ||
1154 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, | |
1155 | SPECIAL_TIMERS_TARGET, NULL, true); | |
1156 | if (r < 0) | |
1157 | return r; | |
1158 | ||
1159 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, | |
1160 | SPECIAL_PATHS_TARGET, NULL, true); | |
1161 | if (r < 0) | |
1162 | return r; | |
1163 | } | |
1164 | ||
1165 | /* Second, activate normal shutdown */ | |
1166 | r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, | |
1167 | SPECIAL_SHUTDOWN_TARGET, NULL, true); | |
1168 | return r; | |
1169 | } | |
1170 | ||
1171 | static void service_fix_output(Service *s) { | |
1172 | assert(s); | |
1173 | ||
1174 | /* If nothing has been explicitly configured, patch default | |
1175 | * output in. If input is socket/tty we avoid this however, | |
1176 | * since in that case we want output to default to the same | |
1177 | * place as we read input from. */ | |
1178 | ||
1179 | if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT && | |
1180 | s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
1181 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1182 | s->exec_context.std_error = UNIT(s)->manager->default_std_error; | |
1183 | ||
1184 | if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT && | |
1185 | s->exec_context.std_input == EXEC_INPUT_NULL) | |
1186 | s->exec_context.std_output = UNIT(s)->manager->default_std_output; | |
1187 | } | |
1188 | ||
1189 | static int service_load(Unit *u) { | |
1190 | int r; | |
1191 | Service *s = SERVICE(u); | |
1192 | ||
1193 | assert(s); | |
1194 | ||
1195 | /* Load a .service file */ | |
1196 | r = unit_load_fragment(u); | |
1197 | if (r < 0) | |
1198 | return r; | |
1199 | ||
1200 | #ifdef HAVE_SYSV_COMPAT | |
1201 | /* Load a classic init script as a fallback, if we couldn't find anything */ | |
1202 | if (u->load_state == UNIT_STUB) { | |
1203 | r = service_load_sysv(s); | |
1204 | if (r < 0) | |
1205 | return r; | |
1206 | } | |
1207 | #endif | |
1208 | ||
1209 | /* Still nothing found? Then let's give up */ | |
1210 | if (u->load_state == UNIT_STUB) | |
1211 | return -ENOENT; | |
1212 | ||
1213 | /* This is a new unit? Then let's add in some extras */ | |
1214 | if (u->load_state == UNIT_LOADED) { | |
1215 | ||
1216 | /* We were able to load something, then let's add in | |
1217 | * the dropin directories. */ | |
1218 | r = unit_load_dropin(u); | |
1219 | if (r < 0) | |
1220 | return r; | |
1221 | ||
1222 | if (s->type == _SERVICE_TYPE_INVALID) | |
1223 | s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE; | |
1224 | ||
1225 | /* Oneshot services have disabled start timeout by default */ | |
1226 | if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined) | |
1227 | s->timeout_start_usec = 0; | |
1228 | ||
1229 | service_fix_output(s); | |
1230 | ||
1231 | r = unit_add_exec_dependencies(u, &s->exec_context); | |
1232 | if (r < 0) | |
1233 | return r; | |
1234 | ||
1235 | r = unit_add_default_slice(u); | |
1236 | if (r < 0) | |
1237 | return r; | |
1238 | ||
1239 | #ifdef HAVE_SYSV_COMPAT | |
1240 | r = sysv_fix_order(s); | |
1241 | if (r < 0) | |
1242 | return r; | |
1243 | #endif | |
1244 | ||
1245 | r = fsck_fix_order(s); | |
1246 | if (r < 0) | |
1247 | return r; | |
1248 | ||
1249 | if (s->bus_name) | |
1250 | if ((r = unit_watch_bus_name(u, s->bus_name)) < 0) | |
1251 | return r; | |
1252 | ||
1253 | if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE) | |
1254 | s->notify_access = NOTIFY_MAIN; | |
1255 | ||
1256 | if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE) | |
1257 | s->notify_access = NOTIFY_MAIN; | |
1258 | ||
1259 | if (s->type == SERVICE_DBUS || s->bus_name) { | |
1260 | r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, | |
1261 | SPECIAL_DBUS_SOCKET, NULL, true); | |
1262 | if (r < 0) | |
1263 | return r; | |
1264 | } | |
1265 | ||
1266 | if (UNIT(s)->default_dependencies) { | |
1267 | r = service_add_default_dependencies(s); | |
1268 | if (r < 0) | |
1269 | return r; | |
1270 | } | |
1271 | ||
1272 | r = unit_exec_context_defaults(u, &s->exec_context); | |
1273 | if (r < 0) | |
1274 | return r; | |
1275 | } | |
1276 | ||
1277 | return service_verify(s); | |
1278 | } | |
1279 | ||
1280 | static void service_dump(Unit *u, FILE *f, const char *prefix) { | |
1281 | ||
1282 | ServiceExecCommand c; | |
1283 | Service *s = SERVICE(u); | |
1284 | const char *prefix2; | |
1285 | _cleanup_free_ char *p2 = NULL; | |
1286 | ||
1287 | assert(s); | |
1288 | ||
1289 | p2 = strappend(prefix, "\t"); | |
1290 | prefix2 = p2 ? p2 : prefix; | |
1291 | ||
1292 | fprintf(f, | |
1293 | "%sService State: %s\n" | |
1294 | "%sResult: %s\n" | |
1295 | "%sReload Result: %s\n" | |
1296 | "%sPermissionsStartOnly: %s\n" | |
1297 | "%sRootDirectoryStartOnly: %s\n" | |
1298 | "%sRemainAfterExit: %s\n" | |
1299 | "%sGuessMainPID: %s\n" | |
1300 | "%sType: %s\n" | |
1301 | "%sRestart: %s\n" | |
1302 | "%sNotifyAccess: %s\n", | |
1303 | prefix, service_state_to_string(s->state), | |
1304 | prefix, service_result_to_string(s->result), | |
1305 | prefix, service_result_to_string(s->reload_result), | |
1306 | prefix, yes_no(s->permissions_start_only), | |
1307 | prefix, yes_no(s->root_directory_start_only), | |
1308 | prefix, yes_no(s->remain_after_exit), | |
1309 | prefix, yes_no(s->guess_main_pid), | |
1310 | prefix, service_type_to_string(s->type), | |
1311 | prefix, service_restart_to_string(s->restart), | |
1312 | prefix, notify_access_to_string(s->notify_access)); | |
1313 | ||
1314 | if (s->control_pid > 0) | |
1315 | fprintf(f, | |
1316 | "%sControl PID: %lu\n", | |
1317 | prefix, (unsigned long) s->control_pid); | |
1318 | ||
1319 | if (s->main_pid > 0) | |
1320 | fprintf(f, | |
1321 | "%sMain PID: %lu\n" | |
1322 | "%sMain PID Known: %s\n" | |
1323 | "%sMain PID Alien: %s\n", | |
1324 | prefix, (unsigned long) s->main_pid, | |
1325 | prefix, yes_no(s->main_pid_known), | |
1326 | prefix, yes_no(s->main_pid_alien)); | |
1327 | ||
1328 | if (s->pid_file) | |
1329 | fprintf(f, | |
1330 | "%sPIDFile: %s\n", | |
1331 | prefix, s->pid_file); | |
1332 | ||
1333 | if (s->bus_name) | |
1334 | fprintf(f, | |
1335 | "%sBusName: %s\n" | |
1336 | "%sBus Name Good: %s\n", | |
1337 | prefix, s->bus_name, | |
1338 | prefix, yes_no(s->bus_name_good)); | |
1339 | ||
1340 | kill_context_dump(&s->kill_context, f, prefix); | |
1341 | exec_context_dump(&s->exec_context, f, prefix); | |
1342 | ||
1343 | for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) { | |
1344 | ||
1345 | if (!s->exec_command[c]) | |
1346 | continue; | |
1347 | ||
1348 | fprintf(f, "%s-> %s:\n", | |
1349 | prefix, service_exec_command_to_string(c)); | |
1350 | ||
1351 | exec_command_dump_list(s->exec_command[c], f, prefix2); | |
1352 | } | |
1353 | ||
1354 | #ifdef HAVE_SYSV_COMPAT | |
1355 | if (s->is_sysv) | |
1356 | fprintf(f, | |
1357 | "%sSysV Init Script has LSB Header: %s\n" | |
1358 | "%sSysVEnabled: %s\n", | |
1359 | prefix, yes_no(s->sysv_has_lsb), | |
1360 | prefix, yes_no(s->sysv_enabled)); | |
1361 | ||
1362 | if (s->sysv_start_priority >= 0) | |
1363 | fprintf(f, | |
1364 | "%sSysVStartPriority: %i\n", | |
1365 | prefix, s->sysv_start_priority); | |
1366 | ||
1367 | if (s->sysv_runlevels) | |
1368 | fprintf(f, "%sSysVRunLevels: %s\n", | |
1369 | prefix, s->sysv_runlevels); | |
1370 | #endif | |
1371 | ||
1372 | if (s->fsck_passno > 0) | |
1373 | fprintf(f, | |
1374 | "%sFsckPassNo: %i\n", | |
1375 | prefix, s->fsck_passno); | |
1376 | ||
1377 | if (s->status_text) | |
1378 | fprintf(f, "%sStatus Text: %s\n", | |
1379 | prefix, s->status_text); | |
1380 | } | |
1381 | ||
1382 | static int service_load_pid_file(Service *s, bool may_warn) { | |
1383 | _cleanup_free_ char *k = NULL; | |
1384 | int r; | |
1385 | pid_t pid; | |
1386 | ||
1387 | assert(s); | |
1388 | ||
1389 | if (!s->pid_file) | |
1390 | return -ENOENT; | |
1391 | ||
1392 | r = read_one_line_file(s->pid_file, &k); | |
1393 | if (r < 0) { | |
1394 | if (may_warn) | |
1395 | log_info_unit(UNIT(s)->id, | |
1396 | "PID file %s not readable (yet?) after %s.", | |
1397 | s->pid_file, service_state_to_string(s->state)); | |
1398 | return r; | |
1399 | } | |
1400 | ||
1401 | r = parse_pid(k, &pid); | |
1402 | if (r < 0) { | |
1403 | if (may_warn) | |
1404 | log_info_unit(UNIT(s)->id, | |
1405 | "Failed to read PID from file %s: %s", | |
1406 | s->pid_file, strerror(-r)); | |
1407 | return r; | |
1408 | } | |
1409 | ||
1410 | if (kill(pid, 0) < 0 && errno != EPERM) { | |
1411 | if (may_warn) | |
1412 | log_info_unit(UNIT(s)->id, | |
1413 | "PID %lu read from file %s does not exist.", | |
1414 | (unsigned long) pid, s->pid_file); | |
1415 | return -ESRCH; | |
1416 | } | |
1417 | ||
1418 | if (s->main_pid_known) { | |
1419 | if (pid == s->main_pid) | |
1420 | return 0; | |
1421 | ||
1422 | log_debug_unit(UNIT(s)->id, | |
1423 | "Main PID changing: %lu -> %lu", | |
1424 | (unsigned long) s->main_pid, (unsigned long) pid); | |
1425 | service_unwatch_main_pid(s); | |
1426 | s->main_pid_known = false; | |
1427 | } else | |
1428 | log_debug_unit(UNIT(s)->id, | |
1429 | "Main PID loaded: %lu", (unsigned long) pid); | |
1430 | ||
1431 | r = service_set_main_pid(s, pid); | |
1432 | if (r < 0) | |
1433 | return r; | |
1434 | ||
1435 | r = unit_watch_pid(UNIT(s), pid); | |
1436 | if (r < 0) { | |
1437 | /* FIXME: we need to do something here */ | |
1438 | log_warning_unit(UNIT(s)->id, | |
1439 | "Failed to watch PID %lu from service %s", | |
1440 | (unsigned long) pid, UNIT(s)->id); | |
1441 | return r; | |
1442 | } | |
1443 | ||
1444 | return 0; | |
1445 | } | |
1446 | ||
1447 | static int service_search_main_pid(Service *s) { | |
1448 | pid_t pid; | |
1449 | int r; | |
1450 | ||
1451 | assert(s); | |
1452 | ||
1453 | /* If we know it anyway, don't ever fallback to unreliable | |
1454 | * heuristics */ | |
1455 | if (s->main_pid_known) | |
1456 | return 0; | |
1457 | ||
1458 | if (!s->guess_main_pid) | |
1459 | return 0; | |
1460 | ||
1461 | assert(s->main_pid <= 0); | |
1462 | ||
1463 | pid = unit_search_main_pid(UNIT(s)); | |
1464 | if (pid <= 0) | |
1465 | return -ENOENT; | |
1466 | ||
1467 | log_debug_unit(UNIT(s)->id, | |
1468 | "Main PID guessed: %lu", (unsigned long) pid); | |
1469 | r = service_set_main_pid(s, pid); | |
1470 | if (r < 0) | |
1471 | return r; | |
1472 | ||
1473 | r = unit_watch_pid(UNIT(s), pid); | |
1474 | if (r < 0) | |
1475 | /* FIXME: we need to do something here */ | |
1476 | log_warning_unit(UNIT(s)->id, | |
1477 | "Failed to watch PID %lu from service %s", | |
1478 | (unsigned long) pid, UNIT(s)->id); | |
1479 | return r; | |
1480 | ||
1481 | return 0; | |
1482 | } | |
1483 | ||
1484 | static void service_notify_sockets_dead(Service *s, bool failed_permanent) { | |
1485 | Iterator i; | |
1486 | Unit *u; | |
1487 | ||
1488 | assert(s); | |
1489 | ||
1490 | /* Notifies all our sockets when we die */ | |
1491 | ||
1492 | if (s->socket_fd >= 0) | |
1493 | return; | |
1494 | ||
1495 | SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) | |
1496 | if (u->type == UNIT_SOCKET) | |
1497 | socket_notify_service_dead(SOCKET(u), failed_permanent); | |
1498 | ||
1499 | return; | |
1500 | } | |
1501 | ||
1502 | static void service_set_state(Service *s, ServiceState state) { | |
1503 | ServiceState old_state; | |
1504 | const UnitActiveState *table; | |
1505 | assert(s); | |
1506 | ||
1507 | table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; | |
1508 | ||
1509 | old_state = s->state; | |
1510 | s->state = state; | |
1511 | ||
1512 | service_unwatch_pid_file(s); | |
1513 | ||
1514 | if (state != SERVICE_START_PRE && | |
1515 | state != SERVICE_START && | |
1516 | state != SERVICE_START_POST && | |
1517 | state != SERVICE_RELOAD && | |
1518 | state != SERVICE_STOP && | |
1519 | state != SERVICE_STOP_SIGTERM && | |
1520 | state != SERVICE_STOP_SIGKILL && | |
1521 | state != SERVICE_STOP_POST && | |
1522 | state != SERVICE_FINAL_SIGTERM && | |
1523 | state != SERVICE_FINAL_SIGKILL && | |
1524 | state != SERVICE_AUTO_RESTART) | |
1525 | unit_unwatch_timer(UNIT(s), &s->timer_watch); | |
1526 | ||
1527 | if (state != SERVICE_START && | |
1528 | state != SERVICE_START_POST && | |
1529 | state != SERVICE_RUNNING && | |
1530 | state != SERVICE_RELOAD && | |
1531 | state != SERVICE_STOP && | |
1532 | state != SERVICE_STOP_SIGTERM && | |
1533 | state != SERVICE_STOP_SIGKILL) { | |
1534 | service_unwatch_main_pid(s); | |
1535 | s->main_command = NULL; | |
1536 | } | |
1537 | ||
1538 | if (state != SERVICE_START_PRE && | |
1539 | state != SERVICE_START && | |
1540 | state != SERVICE_START_POST && | |
1541 | state != SERVICE_RELOAD && | |
1542 | state != SERVICE_STOP && | |
1543 | state != SERVICE_STOP_SIGTERM && | |
1544 | state != SERVICE_STOP_SIGKILL && | |
1545 | state != SERVICE_STOP_POST && | |
1546 | state != SERVICE_FINAL_SIGTERM && | |
1547 | state != SERVICE_FINAL_SIGKILL) { | |
1548 | service_unwatch_control_pid(s); | |
1549 | s->control_command = NULL; | |
1550 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
1551 | } | |
1552 | ||
1553 | if (state == SERVICE_FAILED) | |
1554 | service_notify_sockets_dead(s, s->result == SERVICE_FAILURE_START_LIMIT); | |
1555 | ||
1556 | if (state == SERVICE_DEAD || | |
1557 | state == SERVICE_STOP || | |
1558 | state == SERVICE_STOP_SIGTERM || | |
1559 | state == SERVICE_STOP_SIGKILL || | |
1560 | state == SERVICE_STOP_POST || | |
1561 | state == SERVICE_FINAL_SIGTERM || | |
1562 | state == SERVICE_FINAL_SIGKILL || | |
1563 | state == SERVICE_AUTO_RESTART) | |
1564 | service_notify_sockets_dead(s, false); | |
1565 | ||
1566 | if (state != SERVICE_START_PRE && | |
1567 | state != SERVICE_START && | |
1568 | state != SERVICE_START_POST && | |
1569 | state != SERVICE_RUNNING && | |
1570 | state != SERVICE_RELOAD && | |
1571 | state != SERVICE_STOP && | |
1572 | state != SERVICE_STOP_SIGTERM && | |
1573 | state != SERVICE_STOP_SIGKILL && | |
1574 | state != SERVICE_STOP_POST && | |
1575 | state != SERVICE_FINAL_SIGTERM && | |
1576 | state != SERVICE_FINAL_SIGKILL && | |
1577 | !(state == SERVICE_DEAD && UNIT(s)->job)) { | |
1578 | service_close_socket_fd(s); | |
1579 | service_connection_unref(s); | |
1580 | } | |
1581 | ||
1582 | if (state == SERVICE_STOP || state == SERVICE_STOP_SIGTERM) | |
1583 | service_stop_watchdog(s); | |
1584 | ||
1585 | /* For the inactive states unit_notify() will trim the cgroup, | |
1586 | * but for exit we have to do that ourselves... */ | |
1587 | if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0) | |
1588 | unit_destroy_cgroup(UNIT(s)); | |
1589 | ||
1590 | if (old_state != state) | |
1591 | log_debug_unit(UNIT(s)->id, | |
1592 | "%s changed %s -> %s", UNIT(s)->id, | |
1593 | service_state_to_string(old_state), | |
1594 | service_state_to_string(state)); | |
1595 | ||
1596 | unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS); | |
1597 | s->reload_result = SERVICE_SUCCESS; | |
1598 | } | |
1599 | ||
1600 | static int service_coldplug(Unit *u) { | |
1601 | Service *s = SERVICE(u); | |
1602 | int r; | |
1603 | ||
1604 | assert(s); | |
1605 | assert(s->state == SERVICE_DEAD); | |
1606 | ||
1607 | if (s->deserialized_state != s->state) { | |
1608 | ||
1609 | if (s->deserialized_state == SERVICE_START_PRE || | |
1610 | s->deserialized_state == SERVICE_START || | |
1611 | s->deserialized_state == SERVICE_START_POST || | |
1612 | s->deserialized_state == SERVICE_RELOAD || | |
1613 | s->deserialized_state == SERVICE_STOP || | |
1614 | s->deserialized_state == SERVICE_STOP_SIGTERM || | |
1615 | s->deserialized_state == SERVICE_STOP_SIGKILL || | |
1616 | s->deserialized_state == SERVICE_STOP_POST || | |
1617 | s->deserialized_state == SERVICE_FINAL_SIGTERM || | |
1618 | s->deserialized_state == SERVICE_FINAL_SIGKILL || | |
1619 | s->deserialized_state == SERVICE_AUTO_RESTART) { | |
1620 | if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_start_usec > 0) { | |
1621 | usec_t k; | |
1622 | ||
1623 | k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_start_usec; | |
1624 | ||
1625 | r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, k, &s->timer_watch); | |
1626 | if (r < 0) | |
1627 | return r; | |
1628 | } | |
1629 | } | |
1630 | ||
1631 | if ((s->deserialized_state == SERVICE_START && | |
1632 | (s->type == SERVICE_FORKING || | |
1633 | s->type == SERVICE_DBUS || | |
1634 | s->type == SERVICE_ONESHOT || | |
1635 | s->type == SERVICE_NOTIFY)) || | |
1636 | s->deserialized_state == SERVICE_START_POST || | |
1637 | s->deserialized_state == SERVICE_RUNNING || | |
1638 | s->deserialized_state == SERVICE_RELOAD || | |
1639 | s->deserialized_state == SERVICE_STOP || | |
1640 | s->deserialized_state == SERVICE_STOP_SIGTERM || | |
1641 | s->deserialized_state == SERVICE_STOP_SIGKILL) | |
1642 | if (s->main_pid > 0) { | |
1643 | r = unit_watch_pid(UNIT(s), s->main_pid); | |
1644 | if (r < 0) | |
1645 | return r; | |
1646 | } | |
1647 | ||
1648 | if (s->deserialized_state == SERVICE_START_PRE || | |
1649 | s->deserialized_state == SERVICE_START || | |
1650 | s->deserialized_state == SERVICE_START_POST || | |
1651 | s->deserialized_state == SERVICE_RELOAD || | |
1652 | s->deserialized_state == SERVICE_STOP || | |
1653 | s->deserialized_state == SERVICE_STOP_SIGTERM || | |
1654 | s->deserialized_state == SERVICE_STOP_SIGKILL || | |
1655 | s->deserialized_state == SERVICE_STOP_POST || | |
1656 | s->deserialized_state == SERVICE_FINAL_SIGTERM || | |
1657 | s->deserialized_state == SERVICE_FINAL_SIGKILL) | |
1658 | if (s->control_pid > 0) { | |
1659 | r = unit_watch_pid(UNIT(s), s->control_pid); | |
1660 | if (r < 0) | |
1661 | return r; | |
1662 | } | |
1663 | ||
1664 | if (s->deserialized_state == SERVICE_START_POST || | |
1665 | s->deserialized_state == SERVICE_RUNNING) | |
1666 | service_handle_watchdog(s); | |
1667 | ||
1668 | service_set_state(s, s->deserialized_state); | |
1669 | } | |
1670 | return 0; | |
1671 | } | |
1672 | ||
1673 | static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) { | |
1674 | Iterator i; | |
1675 | int r; | |
1676 | int *rfds = NULL; | |
1677 | unsigned rn_fds = 0; | |
1678 | Unit *u; | |
1679 | ||
1680 | assert(s); | |
1681 | assert(fds); | |
1682 | assert(n_fds); | |
1683 | ||
1684 | if (s->socket_fd >= 0) | |
1685 | return 0; | |
1686 | ||
1687 | SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) { | |
1688 | int *cfds; | |
1689 | unsigned cn_fds; | |
1690 | Socket *sock; | |
1691 | ||
1692 | if (u->type != UNIT_SOCKET) | |
1693 | continue; | |
1694 | ||
1695 | sock = SOCKET(u); | |
1696 | ||
1697 | r = socket_collect_fds(sock, &cfds, &cn_fds); | |
1698 | if (r < 0) | |
1699 | goto fail; | |
1700 | ||
1701 | if (!cfds) | |
1702 | continue; | |
1703 | ||
1704 | if (!rfds) { | |
1705 | rfds = cfds; | |
1706 | rn_fds = cn_fds; | |
1707 | } else { | |
1708 | int *t; | |
1709 | ||
1710 | t = new(int, rn_fds+cn_fds); | |
1711 | if (!t) { | |
1712 | free(cfds); | |
1713 | r = -ENOMEM; | |
1714 | goto fail; | |
1715 | } | |
1716 | ||
1717 | memcpy(t, rfds, rn_fds * sizeof(int)); | |
1718 | memcpy(t+rn_fds, cfds, cn_fds * sizeof(int)); | |
1719 | free(rfds); | |
1720 | free(cfds); | |
1721 | ||
1722 | rfds = t; | |
1723 | rn_fds = rn_fds+cn_fds; | |
1724 | } | |
1725 | } | |
1726 | ||
1727 | *fds = rfds; | |
1728 | *n_fds = rn_fds; | |
1729 | ||
1730 | return 0; | |
1731 | ||
1732 | fail: | |
1733 | free(rfds); | |
1734 | ||
1735 | return r; | |
1736 | } | |
1737 | ||
1738 | static int service_spawn( | |
1739 | Service *s, | |
1740 | ExecCommand *c, | |
1741 | bool timeout, | |
1742 | bool pass_fds, | |
1743 | bool apply_permissions, | |
1744 | bool apply_chroot, | |
1745 | bool apply_tty_stdin, | |
1746 | bool set_notify_socket, | |
1747 | bool is_control, | |
1748 | pid_t *_pid) { | |
1749 | ||
1750 | pid_t pid; | |
1751 | int r; | |
1752 | int *fds = NULL; | |
1753 | _cleanup_free_ int *fdsbuf = NULL; | |
1754 | unsigned n_fds = 0, n_env = 0; | |
1755 | _cleanup_strv_free_ char | |
1756 | **argv = NULL, **final_env = NULL, **our_env = NULL; | |
1757 | const char *path; | |
1758 | ||
1759 | assert(s); | |
1760 | assert(c); | |
1761 | assert(_pid); | |
1762 | ||
1763 | unit_realize_cgroup(UNIT(s)); | |
1764 | ||
1765 | if (pass_fds || | |
1766 | s->exec_context.std_input == EXEC_INPUT_SOCKET || | |
1767 | s->exec_context.std_output == EXEC_OUTPUT_SOCKET || | |
1768 | s->exec_context.std_error == EXEC_OUTPUT_SOCKET) { | |
1769 | ||
1770 | if (s->socket_fd >= 0) { | |
1771 | fds = &s->socket_fd; | |
1772 | n_fds = 1; | |
1773 | } else { | |
1774 | r = service_collect_fds(s, &fdsbuf, &n_fds); | |
1775 | if (r < 0) | |
1776 | goto fail; | |
1777 | ||
1778 | fds = fdsbuf; | |
1779 | } | |
1780 | } | |
1781 | ||
1782 | if (timeout && s->timeout_start_usec) { | |
1783 | r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, | |
1784 | s->timeout_start_usec, &s->timer_watch); | |
1785 | if (r < 0) | |
1786 | goto fail; | |
1787 | } else | |
1788 | unit_unwatch_timer(UNIT(s), &s->timer_watch); | |
1789 | ||
1790 | argv = unit_full_printf_strv(UNIT(s), c->argv); | |
1791 | if (!argv) { | |
1792 | r = -ENOMEM; | |
1793 | goto fail; | |
1794 | } | |
1795 | ||
1796 | our_env = new0(char*, 5); | |
1797 | if (!our_env) { | |
1798 | r = -ENOMEM; | |
1799 | goto fail; | |
1800 | } | |
1801 | ||
1802 | if (set_notify_socket) | |
1803 | if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) { | |
1804 | r = -ENOMEM; | |
1805 | goto fail; | |
1806 | } | |
1807 | ||
1808 | if (s->main_pid > 0) | |
1809 | if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) { | |
1810 | r = -ENOMEM; | |
1811 | goto fail; | |
1812 | } | |
1813 | ||
1814 | if (s->watchdog_usec > 0) | |
1815 | if (asprintf(our_env + n_env++, "WATCHDOG_USEC=%llu", (unsigned long long) s->watchdog_usec) < 0) { | |
1816 | r = -ENOMEM; | |
1817 | goto fail; | |
1818 | } | |
1819 | ||
1820 | if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM) | |
1821 | if (asprintf(our_env + n_env++, "MANAGERPID=%lu", (unsigned long) getpid()) < 0) { | |
1822 | r = -ENOMEM; | |
1823 | goto fail; | |
1824 | } | |
1825 | ||
1826 | final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL); | |
1827 | if (!final_env) { | |
1828 | r = -ENOMEM; | |
1829 | goto fail; | |
1830 | } | |
1831 | ||
1832 | if (is_control && UNIT(s)->cgroup_path) { | |
1833 | path = strappenda(UNIT(s)->cgroup_path, "/control"); | |
1834 | cg_create(SYSTEMD_CGROUP_CONTROLLER, path); | |
1835 | } else | |
1836 | path = UNIT(s)->cgroup_path; | |
1837 | ||
1838 | r = exec_spawn(c, | |
1839 | argv, | |
1840 | &s->exec_context, | |
1841 | fds, n_fds, | |
1842 | final_env, | |
1843 | apply_permissions, | |
1844 | apply_chroot, | |
1845 | apply_tty_stdin, | |
1846 | UNIT(s)->manager->confirm_spawn, | |
1847 | UNIT(s)->cgroup_mask, | |
1848 | path, | |
1849 | UNIT(s)->id, | |
1850 | s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL, | |
1851 | &pid); | |
1852 | if (r < 0) | |
1853 | goto fail; | |
1854 | ||
1855 | r = unit_watch_pid(UNIT(s), pid); | |
1856 | if (r < 0) | |
1857 | /* FIXME: we need to do something here */ | |
1858 | goto fail; | |
1859 | ||
1860 | *_pid = pid; | |
1861 | ||
1862 | return 0; | |
1863 | ||
1864 | fail: | |
1865 | if (timeout) | |
1866 | unit_unwatch_timer(UNIT(s), &s->timer_watch); | |
1867 | ||
1868 | return r; | |
1869 | } | |
1870 | ||
1871 | static int main_pid_good(Service *s) { | |
1872 | assert(s); | |
1873 | ||
1874 | /* Returns 0 if the pid is dead, 1 if it is good, -1 if we | |
1875 | * don't know */ | |
1876 | ||
1877 | /* If we know the pid file, then lets just check if it is | |
1878 | * still valid */ | |
1879 | if (s->main_pid_known) { | |
1880 | ||
1881 | /* If it's an alien child let's check if it is still | |
1882 | * alive ... */ | |
1883 | if (s->main_pid_alien && s->main_pid > 0) | |
1884 | return kill(s->main_pid, 0) >= 0 || errno != ESRCH; | |
1885 | ||
1886 | /* .. otherwise assume we'll get a SIGCHLD for it, | |
1887 | * which we really should wait for to collect exit | |
1888 | * status and code */ | |
1889 | return s->main_pid > 0; | |
1890 | } | |
1891 | ||
1892 | /* We don't know the pid */ | |
1893 | return -EAGAIN; | |
1894 | } | |
1895 | ||
1896 | _pure_ static int control_pid_good(Service *s) { | |
1897 | assert(s); | |
1898 | ||
1899 | return s->control_pid > 0; | |
1900 | } | |
1901 | ||
1902 | static int cgroup_good(Service *s) { | |
1903 | int r; | |
1904 | ||
1905 | assert(s); | |
1906 | ||
1907 | if (!UNIT(s)->cgroup_path) | |
1908 | return 0; | |
1909 | ||
1910 | r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true); | |
1911 | if (r < 0) | |
1912 | return r; | |
1913 | ||
1914 | return !r; | |
1915 | } | |
1916 | ||
1917 | static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) { | |
1918 | int r; | |
1919 | assert(s); | |
1920 | ||
1921 | if (f != SERVICE_SUCCESS) | |
1922 | s->result = f; | |
1923 | ||
1924 | service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD); | |
1925 | ||
1926 | if (allow_restart && | |
1927 | !s->forbid_restart && | |
1928 | (s->restart == SERVICE_RESTART_ALWAYS || | |
1929 | (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) || | |
1930 | (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) || | |
1931 | (s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL || | |
1932 | s->result == SERVICE_FAILURE_CORE_DUMP))) && | |
1933 | (s->result != SERVICE_FAILURE_EXIT_CODE || | |
1934 | !set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) && | |
1935 | (s->result != SERVICE_FAILURE_SIGNAL || | |
1936 | !set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status))) | |
1937 | ) { | |
1938 | ||
1939 | r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->restart_usec, &s->timer_watch); | |
1940 | if (r < 0) | |
1941 | goto fail; | |
1942 | ||
1943 | service_set_state(s, SERVICE_AUTO_RESTART); | |
1944 | } | |
1945 | ||
1946 | s->forbid_restart = false; | |
1947 | ||
1948 | /* we want fresh tmpdirs in case service is started again immediately */ | |
1949 | exec_context_tmp_dirs_done(&s->exec_context); | |
1950 | ||
1951 | return; | |
1952 | ||
1953 | fail: | |
1954 | log_warning_unit(UNIT(s)->id, | |
1955 | "%s failed to run install restart timer: %s", | |
1956 | UNIT(s)->id, strerror(-r)); | |
1957 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); | |
1958 | } | |
1959 | ||
1960 | static void service_enter_stop_post(Service *s, ServiceResult f) { | |
1961 | int r; | |
1962 | assert(s); | |
1963 | ||
1964 | if (f != SERVICE_SUCCESS) | |
1965 | s->result = f; | |
1966 | ||
1967 | service_unwatch_control_pid(s); | |
1968 | ||
1969 | s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST]; | |
1970 | if (s->control_command) { | |
1971 | s->control_command_id = SERVICE_EXEC_STOP_POST; | |
1972 | ||
1973 | r = service_spawn(s, | |
1974 | s->control_command, | |
1975 | true, | |
1976 | false, | |
1977 | !s->permissions_start_only, | |
1978 | !s->root_directory_start_only, | |
1979 | true, | |
1980 | false, | |
1981 | true, | |
1982 | &s->control_pid); | |
1983 | if (r < 0) | |
1984 | goto fail; | |
1985 | ||
1986 | ||
1987 | service_set_state(s, SERVICE_STOP_POST); | |
1988 | } else | |
1989 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS); | |
1990 | ||
1991 | return; | |
1992 | ||
1993 | fail: | |
1994 | log_warning_unit(UNIT(s)->id, | |
1995 | "%s failed to run 'stop-post' task: %s", | |
1996 | UNIT(s)->id, strerror(-r)); | |
1997 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
1998 | } | |
1999 | ||
2000 | static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) { | |
2001 | int r; | |
2002 | ||
2003 | assert(s); | |
2004 | ||
2005 | if (f != SERVICE_SUCCESS) | |
2006 | s->result = f; | |
2007 | ||
2008 | r = unit_kill_context( | |
2009 | UNIT(s), | |
2010 | &s->kill_context, | |
2011 | state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM, | |
2012 | s->main_pid, | |
2013 | s->control_pid, | |
2014 | s->main_pid_alien); | |
2015 | if (r < 0) | |
2016 | goto fail; | |
2017 | ||
2018 | if (r > 0) { | |
2019 | if (s->timeout_stop_usec > 0) { | |
2020 | r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, | |
2021 | s->timeout_stop_usec, &s->timer_watch); | |
2022 | if (r < 0) | |
2023 | goto fail; | |
2024 | } | |
2025 | ||
2026 | service_set_state(s, state); | |
2027 | } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) | |
2028 | service_enter_stop_post(s, SERVICE_SUCCESS); | |
2029 | else | |
2030 | service_enter_dead(s, SERVICE_SUCCESS, true); | |
2031 | ||
2032 | return; | |
2033 | ||
2034 | fail: | |
2035 | log_warning_unit(UNIT(s)->id, | |
2036 | "%s failed to kill processes: %s", UNIT(s)->id, strerror(-r)); | |
2037 | ||
2038 | if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL) | |
2039 | service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES); | |
2040 | else | |
2041 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); | |
2042 | } | |
2043 | ||
2044 | static void service_enter_stop(Service *s, ServiceResult f) { | |
2045 | int r; | |
2046 | ||
2047 | assert(s); | |
2048 | ||
2049 | if (f != SERVICE_SUCCESS) | |
2050 | s->result = f; | |
2051 | ||
2052 | service_unwatch_control_pid(s); | |
2053 | ||
2054 | s->control_command = s->exec_command[SERVICE_EXEC_STOP]; | |
2055 | if (s->control_command) { | |
2056 | s->control_command_id = SERVICE_EXEC_STOP; | |
2057 | ||
2058 | r = service_spawn(s, | |
2059 | s->control_command, | |
2060 | true, | |
2061 | false, | |
2062 | !s->permissions_start_only, | |
2063 | !s->root_directory_start_only, | |
2064 | false, | |
2065 | false, | |
2066 | true, | |
2067 | &s->control_pid); | |
2068 | if (r < 0) | |
2069 | goto fail; | |
2070 | ||
2071 | service_set_state(s, SERVICE_STOP); | |
2072 | } else | |
2073 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); | |
2074 | ||
2075 | return; | |
2076 | ||
2077 | fail: | |
2078 | log_warning_unit(UNIT(s)->id, | |
2079 | "%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r)); | |
2080 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2081 | } | |
2082 | ||
2083 | static void service_enter_running(Service *s, ServiceResult f) { | |
2084 | int main_pid_ok, cgroup_ok; | |
2085 | assert(s); | |
2086 | ||
2087 | if (f != SERVICE_SUCCESS) | |
2088 | s->result = f; | |
2089 | ||
2090 | main_pid_ok = main_pid_good(s); | |
2091 | cgroup_ok = cgroup_good(s); | |
2092 | ||
2093 | if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) && | |
2094 | (s->bus_name_good || s->type != SERVICE_DBUS)) | |
2095 | service_set_state(s, SERVICE_RUNNING); | |
2096 | else if (s->remain_after_exit) | |
2097 | service_set_state(s, SERVICE_EXITED); | |
2098 | else | |
2099 | service_enter_stop(s, SERVICE_SUCCESS); | |
2100 | } | |
2101 | ||
2102 | static void service_enter_start_post(Service *s) { | |
2103 | int r; | |
2104 | assert(s); | |
2105 | ||
2106 | service_unwatch_control_pid(s); | |
2107 | ||
2108 | if (s->watchdog_usec > 0) | |
2109 | service_reset_watchdog(s); | |
2110 | ||
2111 | s->control_command = s->exec_command[SERVICE_EXEC_START_POST]; | |
2112 | if (s->control_command) { | |
2113 | s->control_command_id = SERVICE_EXEC_START_POST; | |
2114 | ||
2115 | r = service_spawn(s, | |
2116 | s->control_command, | |
2117 | true, | |
2118 | false, | |
2119 | !s->permissions_start_only, | |
2120 | !s->root_directory_start_only, | |
2121 | false, | |
2122 | false, | |
2123 | true, | |
2124 | &s->control_pid); | |
2125 | if (r < 0) | |
2126 | goto fail; | |
2127 | ||
2128 | service_set_state(s, SERVICE_START_POST); | |
2129 | } else | |
2130 | service_enter_running(s, SERVICE_SUCCESS); | |
2131 | ||
2132 | return; | |
2133 | ||
2134 | fail: | |
2135 | log_warning_unit(UNIT(s)->id, | |
2136 | "%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r)); | |
2137 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
2138 | } | |
2139 | ||
2140 | static void service_kill_control_processes(Service *s) { | |
2141 | char *p; | |
2142 | ||
2143 | if (!UNIT(s)->cgroup_path) | |
2144 | return; | |
2145 | ||
2146 | p = strappenda(UNIT(s)->cgroup_path, "/control"); | |
2147 | ||
2148 | cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL); | |
2149 | } | |
2150 | ||
2151 | static void service_enter_start(Service *s) { | |
2152 | ExecCommand *c; | |
2153 | pid_t pid; | |
2154 | int r; | |
2155 | ||
2156 | assert(s); | |
2157 | ||
2158 | assert(s->exec_command[SERVICE_EXEC_START]); | |
2159 | assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT); | |
2160 | ||
2161 | if (s->type == SERVICE_FORKING) | |
2162 | service_unwatch_control_pid(s); | |
2163 | else | |
2164 | service_unwatch_main_pid(s); | |
2165 | ||
2166 | /* We want to ensure that nobody leaks processes from | |
2167 | * START_PRE here, so let's go on a killing spree, People | |
2168 | * should not spawn long running processes from START_PRE. */ | |
2169 | service_kill_control_processes(s); | |
2170 | ||
2171 | if (s->type == SERVICE_FORKING) { | |
2172 | s->control_command_id = SERVICE_EXEC_START; | |
2173 | c = s->control_command = s->exec_command[SERVICE_EXEC_START]; | |
2174 | ||
2175 | s->main_command = NULL; | |
2176 | } else { | |
2177 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
2178 | s->control_command = NULL; | |
2179 | ||
2180 | c = s->main_command = s->exec_command[SERVICE_EXEC_START]; | |
2181 | } | |
2182 | ||
2183 | r = service_spawn(s, | |
2184 | c, | |
2185 | s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || | |
2186 | s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT, | |
2187 | true, | |
2188 | true, | |
2189 | true, | |
2190 | true, | |
2191 | s->notify_access != NOTIFY_NONE, | |
2192 | false, | |
2193 | &pid); | |
2194 | if (r < 0) | |
2195 | goto fail; | |
2196 | ||
2197 | if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) { | |
2198 | /* For simple services we immediately start | |
2199 | * the START_POST binaries. */ | |
2200 | ||
2201 | service_set_main_pid(s, pid); | |
2202 | service_enter_start_post(s); | |
2203 | ||
2204 | } else if (s->type == SERVICE_FORKING) { | |
2205 | ||
2206 | /* For forking services we wait until the start | |
2207 | * process exited. */ | |
2208 | ||
2209 | s->control_pid = pid; | |
2210 | service_set_state(s, SERVICE_START); | |
2211 | ||
2212 | } else if (s->type == SERVICE_ONESHOT || | |
2213 | s->type == SERVICE_DBUS || | |
2214 | s->type == SERVICE_NOTIFY) { | |
2215 | ||
2216 | /* For oneshot services we wait until the start | |
2217 | * process exited, too, but it is our main process. */ | |
2218 | ||
2219 | /* For D-Bus services we know the main pid right away, | |
2220 | * but wait for the bus name to appear on the | |
2221 | * bus. Notify services are similar. */ | |
2222 | ||
2223 | service_set_main_pid(s, pid); | |
2224 | service_set_state(s, SERVICE_START); | |
2225 | } else | |
2226 | assert_not_reached("Unknown service type"); | |
2227 | ||
2228 | return; | |
2229 | ||
2230 | fail: | |
2231 | log_warning_unit(UNIT(s)->id, | |
2232 | "%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r)); | |
2233 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2234 | } | |
2235 | ||
2236 | static void service_enter_start_pre(Service *s) { | |
2237 | int r; | |
2238 | ||
2239 | assert(s); | |
2240 | ||
2241 | service_unwatch_control_pid(s); | |
2242 | ||
2243 | s->control_command = s->exec_command[SERVICE_EXEC_START_PRE]; | |
2244 | if (s->control_command) { | |
2245 | /* Before we start anything, let's clear up what might | |
2246 | * be left from previous runs. */ | |
2247 | service_kill_control_processes(s); | |
2248 | ||
2249 | s->control_command_id = SERVICE_EXEC_START_PRE; | |
2250 | ||
2251 | r = service_spawn(s, | |
2252 | s->control_command, | |
2253 | true, | |
2254 | false, | |
2255 | !s->permissions_start_only, | |
2256 | !s->root_directory_start_only, | |
2257 | true, | |
2258 | false, | |
2259 | true, | |
2260 | &s->control_pid); | |
2261 | if (r < 0) | |
2262 | goto fail; | |
2263 | ||
2264 | service_set_state(s, SERVICE_START_PRE); | |
2265 | } else | |
2266 | service_enter_start(s); | |
2267 | ||
2268 | return; | |
2269 | ||
2270 | fail: | |
2271 | log_warning_unit(UNIT(s)->id, | |
2272 | "%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r)); | |
2273 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); | |
2274 | } | |
2275 | ||
2276 | static void service_enter_restart(Service *s) { | |
2277 | int r; | |
2278 | DBusError error; | |
2279 | ||
2280 | assert(s); | |
2281 | dbus_error_init(&error); | |
2282 | ||
2283 | if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) { | |
2284 | /* Don't restart things if we are going down anyway */ | |
2285 | log_info_unit(UNIT(s)->id, | |
2286 | "Stop job pending for unit, delaying automatic restart."); | |
2287 | ||
2288 | r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->restart_usec, &s->timer_watch); | |
2289 | if (r < 0) | |
2290 | goto fail; | |
2291 | ||
2292 | return; | |
2293 | } | |
2294 | ||
2295 | /* Any units that are bound to this service must also be | |
2296 | * restarted. We use JOB_RESTART (instead of the more obvious | |
2297 | * JOB_START) here so that those dependency jobs will be added | |
2298 | * as well. */ | |
2299 | r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL); | |
2300 | if (r < 0) | |
2301 | goto fail; | |
2302 | ||
2303 | /* Note that we stay in the SERVICE_AUTO_RESTART state here, | |
2304 | * it will be canceled as part of the service_stop() call that | |
2305 | * is executed as part of JOB_RESTART. */ | |
2306 | ||
2307 | log_debug_unit(UNIT(s)->id, | |
2308 | "%s scheduled restart job.", UNIT(s)->id); | |
2309 | return; | |
2310 | ||
2311 | fail: | |
2312 | log_warning_unit(UNIT(s)->id, | |
2313 | "%s failed to schedule restart job: %s", | |
2314 | UNIT(s)->id, bus_error(&error, -r)); | |
2315 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false); | |
2316 | ||
2317 | dbus_error_free(&error); | |
2318 | } | |
2319 | ||
2320 | static void service_enter_reload(Service *s) { | |
2321 | int r; | |
2322 | ||
2323 | assert(s); | |
2324 | ||
2325 | service_unwatch_control_pid(s); | |
2326 | ||
2327 | s->control_command = s->exec_command[SERVICE_EXEC_RELOAD]; | |
2328 | if (s->control_command) { | |
2329 | s->control_command_id = SERVICE_EXEC_RELOAD; | |
2330 | ||
2331 | r = service_spawn(s, | |
2332 | s->control_command, | |
2333 | true, | |
2334 | false, | |
2335 | !s->permissions_start_only, | |
2336 | !s->root_directory_start_only, | |
2337 | false, | |
2338 | false, | |
2339 | true, | |
2340 | &s->control_pid); | |
2341 | if (r < 0) | |
2342 | goto fail; | |
2343 | ||
2344 | service_set_state(s, SERVICE_RELOAD); | |
2345 | } else | |
2346 | service_enter_running(s, SERVICE_SUCCESS); | |
2347 | ||
2348 | return; | |
2349 | ||
2350 | fail: | |
2351 | log_warning_unit(UNIT(s)->id, | |
2352 | "%s failed to run 'reload' task: %s", | |
2353 | UNIT(s)->id, strerror(-r)); | |
2354 | s->reload_result = SERVICE_FAILURE_RESOURCES; | |
2355 | service_enter_running(s, SERVICE_SUCCESS); | |
2356 | } | |
2357 | ||
2358 | static void service_run_next_control(Service *s) { | |
2359 | int r; | |
2360 | ||
2361 | assert(s); | |
2362 | assert(s->control_command); | |
2363 | assert(s->control_command->command_next); | |
2364 | ||
2365 | assert(s->control_command_id != SERVICE_EXEC_START); | |
2366 | ||
2367 | s->control_command = s->control_command->command_next; | |
2368 | service_unwatch_control_pid(s); | |
2369 | ||
2370 | r = service_spawn(s, | |
2371 | s->control_command, | |
2372 | true, | |
2373 | false, | |
2374 | !s->permissions_start_only, | |
2375 | !s->root_directory_start_only, | |
2376 | s->control_command_id == SERVICE_EXEC_START_PRE || | |
2377 | s->control_command_id == SERVICE_EXEC_STOP_POST, | |
2378 | false, | |
2379 | true, | |
2380 | &s->control_pid); | |
2381 | if (r < 0) | |
2382 | goto fail; | |
2383 | ||
2384 | return; | |
2385 | ||
2386 | fail: | |
2387 | log_warning_unit(UNIT(s)->id, | |
2388 | "%s failed to run next control task: %s", | |
2389 | UNIT(s)->id, strerror(-r)); | |
2390 | ||
2391 | if (s->state == SERVICE_START_PRE) | |
2392 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2393 | else if (s->state == SERVICE_STOP) | |
2394 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2395 | else if (s->state == SERVICE_STOP_POST) | |
2396 | service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true); | |
2397 | else if (s->state == SERVICE_RELOAD) { | |
2398 | s->reload_result = SERVICE_FAILURE_RESOURCES; | |
2399 | service_enter_running(s, SERVICE_SUCCESS); | |
2400 | } else | |
2401 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
2402 | } | |
2403 | ||
2404 | static void service_run_next_main(Service *s) { | |
2405 | pid_t pid; | |
2406 | int r; | |
2407 | ||
2408 | assert(s); | |
2409 | assert(s->main_command); | |
2410 | assert(s->main_command->command_next); | |
2411 | assert(s->type == SERVICE_ONESHOT); | |
2412 | ||
2413 | s->main_command = s->main_command->command_next; | |
2414 | service_unwatch_main_pid(s); | |
2415 | ||
2416 | r = service_spawn(s, | |
2417 | s->main_command, | |
2418 | true, | |
2419 | true, | |
2420 | true, | |
2421 | true, | |
2422 | true, | |
2423 | s->notify_access != NOTIFY_NONE, | |
2424 | false, | |
2425 | &pid); | |
2426 | if (r < 0) | |
2427 | goto fail; | |
2428 | ||
2429 | service_set_main_pid(s, pid); | |
2430 | ||
2431 | return; | |
2432 | ||
2433 | fail: | |
2434 | log_warning_unit(UNIT(s)->id, | |
2435 | "%s failed to run next main task: %s", UNIT(s)->id, strerror(-r)); | |
2436 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
2437 | } | |
2438 | ||
2439 | static int service_start_limit_test(Service *s) { | |
2440 | assert(s); | |
2441 | ||
2442 | if (ratelimit_test(&s->start_limit)) | |
2443 | return 0; | |
2444 | ||
2445 | switch (s->start_limit_action) { | |
2446 | ||
2447 | case SERVICE_START_LIMIT_NONE: | |
2448 | log_warning_unit(UNIT(s)->id, | |
2449 | "%s start request repeated too quickly, refusing to start.", | |
2450 | UNIT(s)->id); | |
2451 | break; | |
2452 | ||
2453 | case SERVICE_START_LIMIT_REBOOT: { | |
2454 | DBusError error; | |
2455 | int r; | |
2456 | ||
2457 | dbus_error_init(&error); | |
2458 | ||
2459 | log_warning_unit(UNIT(s)->id, | |
2460 | "%s start request repeated too quickly, rebooting.", UNIT(s)->id); | |
2461 | ||
2462 | r = manager_add_job_by_name(UNIT(s)->manager, JOB_START, | |
2463 | SPECIAL_REBOOT_TARGET, JOB_REPLACE, | |
2464 | true, &error, NULL); | |
2465 | if (r < 0) { | |
2466 | log_error_unit(UNIT(s)->id, | |
2467 | "Failed to reboot: %s.", bus_error(&error, r)); | |
2468 | dbus_error_free(&error); | |
2469 | } | |
2470 | ||
2471 | break; | |
2472 | } | |
2473 | ||
2474 | case SERVICE_START_LIMIT_REBOOT_FORCE: | |
2475 | log_warning_unit(UNIT(s)->id, | |
2476 | "%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id); | |
2477 | UNIT(s)->manager->exit_code = MANAGER_REBOOT; | |
2478 | break; | |
2479 | ||
2480 | case SERVICE_START_LIMIT_REBOOT_IMMEDIATE: | |
2481 | log_warning_unit(UNIT(s)->id, | |
2482 | "%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id); | |
2483 | sync(); | |
2484 | reboot(RB_AUTOBOOT); | |
2485 | break; | |
2486 | ||
2487 | default: | |
2488 | log_error_unit(UNIT(s)->id, | |
2489 | "start limit action=%i", s->start_limit_action); | |
2490 | assert_not_reached("Unknown StartLimitAction."); | |
2491 | } | |
2492 | ||
2493 | return -ECANCELED; | |
2494 | } | |
2495 | ||
2496 | static int service_start(Unit *u) { | |
2497 | Service *s = SERVICE(u); | |
2498 | int r; | |
2499 | ||
2500 | assert(s); | |
2501 | ||
2502 | /* We cannot fulfill this request right now, try again later | |
2503 | * please! */ | |
2504 | if (s->state == SERVICE_STOP || | |
2505 | s->state == SERVICE_STOP_SIGTERM || | |
2506 | s->state == SERVICE_STOP_SIGKILL || | |
2507 | s->state == SERVICE_STOP_POST || | |
2508 | s->state == SERVICE_FINAL_SIGTERM || | |
2509 | s->state == SERVICE_FINAL_SIGKILL) | |
2510 | return -EAGAIN; | |
2511 | ||
2512 | /* Already on it! */ | |
2513 | if (s->state == SERVICE_START_PRE || | |
2514 | s->state == SERVICE_START || | |
2515 | s->state == SERVICE_START_POST) | |
2516 | return 0; | |
2517 | ||
2518 | /* A service that will be restarted must be stopped first to | |
2519 | * trigger BindsTo and/or OnFailure dependencies. If a user | |
2520 | * does not want to wait for the holdoff time to elapse, the | |
2521 | * service should be manually restarted, not started. We | |
2522 | * simply return EAGAIN here, so that any start jobs stay | |
2523 | * queued, and assume that the auto restart timer will | |
2524 | * eventually trigger the restart. */ | |
2525 | if (s->state == SERVICE_AUTO_RESTART) | |
2526 | return -EAGAIN; | |
2527 | ||
2528 | assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED); | |
2529 | ||
2530 | /* Make sure we don't enter a busy loop of some kind. */ | |
2531 | r = service_start_limit_test(s); | |
2532 | if (r < 0) { | |
2533 | service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false); | |
2534 | return r; | |
2535 | } | |
2536 | ||
2537 | s->result = SERVICE_SUCCESS; | |
2538 | s->reload_result = SERVICE_SUCCESS; | |
2539 | s->main_pid_known = false; | |
2540 | s->main_pid_alien = false; | |
2541 | s->forbid_restart = false; | |
2542 | ||
2543 | service_enter_start_pre(s); | |
2544 | return 0; | |
2545 | } | |
2546 | ||
2547 | static int service_stop(Unit *u) { | |
2548 | Service *s = SERVICE(u); | |
2549 | ||
2550 | assert(s); | |
2551 | ||
2552 | /* Don't create restart jobs from here. */ | |
2553 | s->forbid_restart = true; | |
2554 | ||
2555 | /* Already on it */ | |
2556 | if (s->state == SERVICE_STOP || | |
2557 | s->state == SERVICE_STOP_SIGTERM || | |
2558 | s->state == SERVICE_STOP_SIGKILL || | |
2559 | s->state == SERVICE_STOP_POST || | |
2560 | s->state == SERVICE_FINAL_SIGTERM || | |
2561 | s->state == SERVICE_FINAL_SIGKILL) | |
2562 | return 0; | |
2563 | ||
2564 | /* A restart will be scheduled or is in progress. */ | |
2565 | if (s->state == SERVICE_AUTO_RESTART) { | |
2566 | service_set_state(s, SERVICE_DEAD); | |
2567 | return 0; | |
2568 | } | |
2569 | ||
2570 | /* If there's already something running we go directly into | |
2571 | * kill mode. */ | |
2572 | if (s->state == SERVICE_START_PRE || | |
2573 | s->state == SERVICE_START || | |
2574 | s->state == SERVICE_START_POST || | |
2575 | s->state == SERVICE_RELOAD) { | |
2576 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS); | |
2577 | return 0; | |
2578 | } | |
2579 | ||
2580 | assert(s->state == SERVICE_RUNNING || | |
2581 | s->state == SERVICE_EXITED); | |
2582 | ||
2583 | service_enter_stop(s, SERVICE_SUCCESS); | |
2584 | return 0; | |
2585 | } | |
2586 | ||
2587 | static int service_reload(Unit *u) { | |
2588 | Service *s = SERVICE(u); | |
2589 | ||
2590 | assert(s); | |
2591 | ||
2592 | assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED); | |
2593 | ||
2594 | service_enter_reload(s); | |
2595 | return 0; | |
2596 | } | |
2597 | ||
2598 | _pure_ static bool service_can_reload(Unit *u) { | |
2599 | Service *s = SERVICE(u); | |
2600 | ||
2601 | assert(s); | |
2602 | ||
2603 | return !!s->exec_command[SERVICE_EXEC_RELOAD]; | |
2604 | } | |
2605 | ||
2606 | static int service_serialize(Unit *u, FILE *f, FDSet *fds) { | |
2607 | Service *s = SERVICE(u); | |
2608 | ||
2609 | assert(u); | |
2610 | assert(f); | |
2611 | assert(fds); | |
2612 | ||
2613 | unit_serialize_item(u, f, "state", service_state_to_string(s->state)); | |
2614 | unit_serialize_item(u, f, "result", service_result_to_string(s->result)); | |
2615 | unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result)); | |
2616 | ||
2617 | if (s->control_pid > 0) | |
2618 | unit_serialize_item_format(u, f, "control-pid", "%lu", | |
2619 | (unsigned long) s->control_pid); | |
2620 | ||
2621 | if (s->main_pid_known && s->main_pid > 0) | |
2622 | unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid); | |
2623 | ||
2624 | unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known)); | |
2625 | ||
2626 | if (s->status_text) | |
2627 | unit_serialize_item(u, f, "status-text", s->status_text); | |
2628 | ||
2629 | /* FIXME: There's a minor uncleanliness here: if there are | |
2630 | * multiple commands attached here, we will start from the | |
2631 | * first one again */ | |
2632 | if (s->control_command_id >= 0) | |
2633 | unit_serialize_item(u, f, "control-command", | |
2634 | service_exec_command_to_string(s->control_command_id)); | |
2635 | ||
2636 | if (s->socket_fd >= 0) { | |
2637 | int copy; | |
2638 | ||
2639 | if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0) | |
2640 | return copy; | |
2641 | ||
2642 | unit_serialize_item_format(u, f, "socket-fd", "%i", copy); | |
2643 | } | |
2644 | ||
2645 | if (s->main_exec_status.pid > 0) { | |
2646 | unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", | |
2647 | (unsigned long) s->main_exec_status.pid); | |
2648 | dual_timestamp_serialize(f, "main-exec-status-start", | |
2649 | &s->main_exec_status.start_timestamp); | |
2650 | dual_timestamp_serialize(f, "main-exec-status-exit", | |
2651 | &s->main_exec_status.exit_timestamp); | |
2652 | ||
2653 | if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) { | |
2654 | unit_serialize_item_format(u, f, "main-exec-status-code", "%i", | |
2655 | s->main_exec_status.code); | |
2656 | unit_serialize_item_format(u, f, "main-exec-status-status", "%i", | |
2657 | s->main_exec_status.status); | |
2658 | } | |
2659 | } | |
2660 | if (dual_timestamp_is_set(&s->watchdog_timestamp)) | |
2661 | dual_timestamp_serialize(f, "watchdog-timestamp", | |
2662 | &s->watchdog_timestamp); | |
2663 | ||
2664 | if (s->exec_context.tmp_dir) | |
2665 | unit_serialize_item(u, f, "tmp-dir", s->exec_context.tmp_dir); | |
2666 | ||
2667 | if (s->exec_context.var_tmp_dir) | |
2668 | unit_serialize_item(u, f, "var-tmp-dir", s->exec_context.var_tmp_dir); | |
2669 | ||
2670 | return 0; | |
2671 | } | |
2672 | ||
2673 | static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { | |
2674 | Service *s = SERVICE(u); | |
2675 | ||
2676 | assert(u); | |
2677 | assert(key); | |
2678 | assert(value); | |
2679 | assert(fds); | |
2680 | ||
2681 | if (streq(key, "state")) { | |
2682 | ServiceState state; | |
2683 | ||
2684 | state = service_state_from_string(value); | |
2685 | if (state < 0) | |
2686 | log_debug_unit(u->id, "Failed to parse state value %s", value); | |
2687 | else | |
2688 | s->deserialized_state = state; | |
2689 | } else if (streq(key, "result")) { | |
2690 | ServiceResult f; | |
2691 | ||
2692 | f = service_result_from_string(value); | |
2693 | if (f < 0) | |
2694 | log_debug_unit(u->id, "Failed to parse result value %s", value); | |
2695 | else if (f != SERVICE_SUCCESS) | |
2696 | s->result = f; | |
2697 | ||
2698 | } else if (streq(key, "reload-result")) { | |
2699 | ServiceResult f; | |
2700 | ||
2701 | f = service_result_from_string(value); | |
2702 | if (f < 0) | |
2703 | log_debug_unit(u->id, "Failed to parse reload result value %s", value); | |
2704 | else if (f != SERVICE_SUCCESS) | |
2705 | s->reload_result = f; | |
2706 | ||
2707 | } else if (streq(key, "control-pid")) { | |
2708 | pid_t pid; | |
2709 | ||
2710 | if (parse_pid(value, &pid) < 0) | |
2711 | log_debug_unit(u->id, "Failed to parse control-pid value %s", value); | |
2712 | else | |
2713 | s->control_pid = pid; | |
2714 | } else if (streq(key, "main-pid")) { | |
2715 | pid_t pid; | |
2716 | ||
2717 | if (parse_pid(value, &pid) < 0) | |
2718 | log_debug_unit(u->id, "Failed to parse main-pid value %s", value); | |
2719 | else | |
2720 | service_set_main_pid(s, (pid_t) pid); | |
2721 | } else if (streq(key, "main-pid-known")) { | |
2722 | int b; | |
2723 | ||
2724 | b = parse_boolean(value); | |
2725 | if (b < 0) | |
2726 | log_debug_unit(u->id, "Failed to parse main-pid-known value %s", value); | |
2727 | else | |
2728 | s->main_pid_known = b; | |
2729 | } else if (streq(key, "status-text")) { | |
2730 | char *t; | |
2731 | ||
2732 | t = strdup(value); | |
2733 | if (!t) | |
2734 | log_oom(); | |
2735 | else { | |
2736 | free(s->status_text); | |
2737 | s->status_text = t; | |
2738 | } | |
2739 | ||
2740 | } else if (streq(key, "control-command")) { | |
2741 | ServiceExecCommand id; | |
2742 | ||
2743 | id = service_exec_command_from_string(value); | |
2744 | if (id < 0) | |
2745 | log_debug_unit(u->id, "Failed to parse exec-command value %s", value); | |
2746 | else { | |
2747 | s->control_command_id = id; | |
2748 | s->control_command = s->exec_command[id]; | |
2749 | } | |
2750 | } else if (streq(key, "socket-fd")) { | |
2751 | int fd; | |
2752 | ||
2753 | if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd)) | |
2754 | log_debug_unit(u->id, "Failed to parse socket-fd value %s", value); | |
2755 | else { | |
2756 | ||
2757 | if (s->socket_fd >= 0) | |
2758 | close_nointr_nofail(s->socket_fd); | |
2759 | s->socket_fd = fdset_remove(fds, fd); | |
2760 | } | |
2761 | } else if (streq(key, "main-exec-status-pid")) { | |
2762 | pid_t pid; | |
2763 | ||
2764 | if (parse_pid(value, &pid) < 0) | |
2765 | log_debug_unit(u->id, "Failed to parse main-exec-status-pid value %s", value); | |
2766 | else | |
2767 | s->main_exec_status.pid = pid; | |
2768 | } else if (streq(key, "main-exec-status-code")) { | |
2769 | int i; | |
2770 | ||
2771 | if (safe_atoi(value, &i) < 0) | |
2772 | log_debug_unit(u->id, "Failed to parse main-exec-status-code value %s", value); | |
2773 | else | |
2774 | s->main_exec_status.code = i; | |
2775 | } else if (streq(key, "main-exec-status-status")) { | |
2776 | int i; | |
2777 | ||
2778 | if (safe_atoi(value, &i) < 0) | |
2779 | log_debug_unit(u->id, "Failed to parse main-exec-status-status value %s", value); | |
2780 | else | |
2781 | s->main_exec_status.status = i; | |
2782 | } else if (streq(key, "main-exec-status-start")) | |
2783 | dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp); | |
2784 | else if (streq(key, "main-exec-status-exit")) | |
2785 | dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp); | |
2786 | else if (streq(key, "watchdog-timestamp")) | |
2787 | dual_timestamp_deserialize(value, &s->watchdog_timestamp); | |
2788 | else if (streq(key, "tmp-dir")) { | |
2789 | char *t; | |
2790 | ||
2791 | t = strdup(value); | |
2792 | if (!t) | |
2793 | return log_oom(); | |
2794 | ||
2795 | s->exec_context.tmp_dir = t; | |
2796 | } else if (streq(key, "var-tmp-dir")) { | |
2797 | char *t; | |
2798 | ||
2799 | t = strdup(value); | |
2800 | if (!t) | |
2801 | return log_oom(); | |
2802 | ||
2803 | s->exec_context.var_tmp_dir = t; | |
2804 | } else | |
2805 | log_debug_unit(u->id, "Unknown serialization key '%s'", key); | |
2806 | ||
2807 | return 0; | |
2808 | } | |
2809 | ||
2810 | _pure_ static UnitActiveState service_active_state(Unit *u) { | |
2811 | const UnitActiveState *table; | |
2812 | ||
2813 | assert(u); | |
2814 | ||
2815 | table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table; | |
2816 | ||
2817 | return table[SERVICE(u)->state]; | |
2818 | } | |
2819 | ||
2820 | static const char *service_sub_state_to_string(Unit *u) { | |
2821 | assert(u); | |
2822 | ||
2823 | return service_state_to_string(SERVICE(u)->state); | |
2824 | } | |
2825 | ||
2826 | static bool service_check_gc(Unit *u) { | |
2827 | Service *s = SERVICE(u); | |
2828 | ||
2829 | assert(s); | |
2830 | ||
2831 | /* Never clean up services that still have a process around, | |
2832 | * even if the service is formally dead. */ | |
2833 | if (cgroup_good(s) > 0 || | |
2834 | main_pid_good(s) > 0 || | |
2835 | control_pid_good(s) > 0) | |
2836 | return true; | |
2837 | ||
2838 | #ifdef HAVE_SYSV_COMPAT | |
2839 | if (s->is_sysv) | |
2840 | return true; | |
2841 | #endif | |
2842 | ||
2843 | return false; | |
2844 | } | |
2845 | ||
2846 | _pure_ static bool service_check_snapshot(Unit *u) { | |
2847 | Service *s = SERVICE(u); | |
2848 | ||
2849 | assert(s); | |
2850 | ||
2851 | return !s->got_socket_fd; | |
2852 | } | |
2853 | ||
2854 | static int service_retry_pid_file(Service *s) { | |
2855 | int r; | |
2856 | ||
2857 | assert(s->pid_file); | |
2858 | assert(s->state == SERVICE_START || s->state == SERVICE_START_POST); | |
2859 | ||
2860 | r = service_load_pid_file(s, false); | |
2861 | if (r < 0) | |
2862 | return r; | |
2863 | ||
2864 | service_unwatch_pid_file(s); | |
2865 | ||
2866 | service_enter_running(s, SERVICE_SUCCESS); | |
2867 | return 0; | |
2868 | } | |
2869 | ||
2870 | static int service_watch_pid_file(Service *s) { | |
2871 | int r; | |
2872 | ||
2873 | log_debug_unit(UNIT(s)->id, | |
2874 | "Setting watch for %s's PID file %s", | |
2875 | UNIT(s)->id, s->pid_file_pathspec->path); | |
2876 | r = path_spec_watch(s->pid_file_pathspec, UNIT(s)); | |
2877 | if (r < 0) | |
2878 | goto fail; | |
2879 | ||
2880 | /* the pidfile might have appeared just before we set the watch */ | |
2881 | log_debug_unit(UNIT(s)->id, | |
2882 | "Trying to read %s's PID file %s in case it changed", | |
2883 | UNIT(s)->id, s->pid_file_pathspec->path); | |
2884 | service_retry_pid_file(s); | |
2885 | ||
2886 | return 0; | |
2887 | fail: | |
2888 | log_error_unit(UNIT(s)->id, | |
2889 | "Failed to set a watch for %s's PID file %s: %s", | |
2890 | UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r)); | |
2891 | service_unwatch_pid_file(s); | |
2892 | return r; | |
2893 | } | |
2894 | ||
2895 | static int service_demand_pid_file(Service *s) { | |
2896 | PathSpec *ps; | |
2897 | ||
2898 | assert(s->pid_file); | |
2899 | assert(!s->pid_file_pathspec); | |
2900 | ||
2901 | ps = new0(PathSpec, 1); | |
2902 | if (!ps) | |
2903 | return -ENOMEM; | |
2904 | ||
2905 | ps->path = strdup(s->pid_file); | |
2906 | if (!ps->path) { | |
2907 | free(ps); | |
2908 | return -ENOMEM; | |
2909 | } | |
2910 | ||
2911 | path_kill_slashes(ps->path); | |
2912 | ||
2913 | /* PATH_CHANGED would not be enough. There are daemons (sendmail) that | |
2914 | * keep their PID file open all the time. */ | |
2915 | ps->type = PATH_MODIFIED; | |
2916 | ps->inotify_fd = -1; | |
2917 | ||
2918 | s->pid_file_pathspec = ps; | |
2919 | ||
2920 | return service_watch_pid_file(s); | |
2921 | } | |
2922 | ||
2923 | static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) { | |
2924 | Service *s = SERVICE(u); | |
2925 | ||
2926 | assert(s); | |
2927 | assert(fd >= 0); | |
2928 | assert(s->state == SERVICE_START || s->state == SERVICE_START_POST); | |
2929 | assert(s->pid_file_pathspec); | |
2930 | assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd)); | |
2931 | ||
2932 | log_debug_unit(u->id, "inotify event for %s", u->id); | |
2933 | ||
2934 | if (path_spec_fd_event(s->pid_file_pathspec, events) < 0) | |
2935 | goto fail; | |
2936 | ||
2937 | if (service_retry_pid_file(s) == 0) | |
2938 | return; | |
2939 | ||
2940 | if (service_watch_pid_file(s) < 0) | |
2941 | goto fail; | |
2942 | ||
2943 | return; | |
2944 | fail: | |
2945 | service_unwatch_pid_file(s); | |
2946 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
2947 | } | |
2948 | ||
2949 | static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { | |
2950 | Service *s = SERVICE(u); | |
2951 | ServiceResult f; | |
2952 | ||
2953 | assert(s); | |
2954 | assert(pid >= 0); | |
2955 | ||
2956 | if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) : | |
2957 | is_clean_exit_lsb(code, status, &s->success_status)) | |
2958 | f = SERVICE_SUCCESS; | |
2959 | else if (code == CLD_EXITED) | |
2960 | f = SERVICE_FAILURE_EXIT_CODE; | |
2961 | else if (code == CLD_KILLED) | |
2962 | f = SERVICE_FAILURE_SIGNAL; | |
2963 | else if (code == CLD_DUMPED) | |
2964 | f = SERVICE_FAILURE_CORE_DUMP; | |
2965 | else | |
2966 | assert_not_reached("Unknown code"); | |
2967 | ||
2968 | if (s->main_pid == pid) { | |
2969 | /* Forking services may occasionally move to a new PID. | |
2970 | * As long as they update the PID file before exiting the old | |
2971 | * PID, they're fine. */ | |
2972 | if (service_load_pid_file(s, false) == 0) | |
2973 | return; | |
2974 | ||
2975 | s->main_pid = 0; | |
2976 | exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status); | |
2977 | ||
2978 | if (s->main_command) { | |
2979 | /* If this is not a forking service than the | |
2980 | * main process got started and hence we copy | |
2981 | * the exit status so that it is recorded both | |
2982 | * as main and as control process exit | |
2983 | * status */ | |
2984 | ||
2985 | s->main_command->exec_status = s->main_exec_status; | |
2986 | ||
2987 | if (s->main_command->ignore) | |
2988 | f = SERVICE_SUCCESS; | |
2989 | } else if (s->exec_command[SERVICE_EXEC_START]) { | |
2990 | ||
2991 | /* If this is a forked process, then we should | |
2992 | * ignore the return value if this was | |
2993 | * configured for the starter process */ | |
2994 | ||
2995 | if (s->exec_command[SERVICE_EXEC_START]->ignore) | |
2996 | f = SERVICE_SUCCESS; | |
2997 | } | |
2998 | ||
2999 | log_struct_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, | |
3000 | u->id, | |
3001 | "MESSAGE=%s: main process exited, code=%s, status=%i/%s", | |
3002 | u->id, sigchld_code_to_string(code), status, | |
3003 | strna(code == CLD_EXITED | |
3004 | ? exit_status_to_string(status, EXIT_STATUS_FULL) | |
3005 | : signal_to_string(status)), | |
3006 | "EXIT_CODE=%s", sigchld_code_to_string(code), | |
3007 | "EXIT_STATUS=%i", status, | |
3008 | NULL); | |
3009 | ||
3010 | if (f != SERVICE_SUCCESS) | |
3011 | s->result = f; | |
3012 | ||
3013 | if (s->main_command && | |
3014 | s->main_command->command_next && | |
3015 | f == SERVICE_SUCCESS) { | |
3016 | ||
3017 | /* There is another command to * | |
3018 | * execute, so let's do that. */ | |
3019 | ||
3020 | log_debug_unit(u->id, | |
3021 | "%s running next main command for state %s", | |
3022 | u->id, service_state_to_string(s->state)); | |
3023 | service_run_next_main(s); | |
3024 | ||
3025 | } else { | |
3026 | ||
3027 | /* The service exited, so the service is officially | |
3028 | * gone. */ | |
3029 | s->main_command = NULL; | |
3030 | ||
3031 | switch (s->state) { | |
3032 | ||
3033 | case SERVICE_START_POST: | |
3034 | case SERVICE_RELOAD: | |
3035 | case SERVICE_STOP: | |
3036 | /* Need to wait until the operation is | |
3037 | * done */ | |
3038 | break; | |
3039 | ||
3040 | case SERVICE_START: | |
3041 | if (s->type == SERVICE_ONESHOT) { | |
3042 | /* This was our main goal, so let's go on */ | |
3043 | if (f == SERVICE_SUCCESS) | |
3044 | service_enter_start_post(s); | |
3045 | else | |
3046 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
3047 | break; | |
3048 | } | |
3049 | ||
3050 | /* Fall through */ | |
3051 | ||
3052 | case SERVICE_RUNNING: | |
3053 | service_enter_running(s, f); | |
3054 | break; | |
3055 | ||
3056 | case SERVICE_STOP_SIGTERM: | |
3057 | case SERVICE_STOP_SIGKILL: | |
3058 | ||
3059 | if (!control_pid_good(s)) | |
3060 | service_enter_stop_post(s, f); | |
3061 | ||
3062 | /* If there is still a control process, wait for that first */ | |
3063 | break; | |
3064 | ||
3065 | default: | |
3066 | assert_not_reached("Uh, main process died at wrong time."); | |
3067 | } | |
3068 | } | |
3069 | ||
3070 | } else if (s->control_pid == pid) { | |
3071 | s->control_pid = 0; | |
3072 | ||
3073 | if (s->control_command) { | |
3074 | exec_status_exit(&s->control_command->exec_status, | |
3075 | &s->exec_context, pid, code, status); | |
3076 | ||
3077 | if (s->control_command->ignore) | |
3078 | f = SERVICE_SUCCESS; | |
3079 | } | |
3080 | ||
3081 | log_full_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, u->id, | |
3082 | "%s: control process exited, code=%s status=%i", | |
3083 | u->id, sigchld_code_to_string(code), status); | |
3084 | ||
3085 | if (f != SERVICE_SUCCESS) | |
3086 | s->result = f; | |
3087 | ||
3088 | /* Immediately get rid of the cgroup, so that the | |
3089 | * kernel doesn't delay the cgroup empty messages for | |
3090 | * the service cgroup any longer than necessary */ | |
3091 | service_kill_control_processes(s); | |
3092 | ||
3093 | if (s->control_command && | |
3094 | s->control_command->command_next && | |
3095 | f == SERVICE_SUCCESS) { | |
3096 | ||
3097 | /* There is another command to * | |
3098 | * execute, so let's do that. */ | |
3099 | ||
3100 | log_debug_unit(u->id, | |
3101 | "%s running next control command for state %s", | |
3102 | u->id, service_state_to_string(s->state)); | |
3103 | service_run_next_control(s); | |
3104 | ||
3105 | } else { | |
3106 | /* No further commands for this step, so let's | |
3107 | * figure out what to do next */ | |
3108 | ||
3109 | s->control_command = NULL; | |
3110 | s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; | |
3111 | ||
3112 | log_debug_unit(u->id, | |
3113 | "%s got final SIGCHLD for state %s", | |
3114 | u->id, service_state_to_string(s->state)); | |
3115 | ||
3116 | switch (s->state) { | |
3117 | ||
3118 | case SERVICE_START_PRE: | |
3119 | if (f == SERVICE_SUCCESS) | |
3120 | service_enter_start(s); | |
3121 | else | |
3122 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
3123 | break; | |
3124 | ||
3125 | case SERVICE_START: | |
3126 | if (s->type != SERVICE_FORKING) | |
3127 | /* Maybe spurious event due to a reload that changed the type? */ | |
3128 | break; | |
3129 | ||
3130 | if (f != SERVICE_SUCCESS) { | |
3131 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, f); | |
3132 | break; | |
3133 | } | |
3134 | ||
3135 | if (s->pid_file) { | |
3136 | bool has_start_post; | |
3137 | int r; | |
3138 | ||
3139 | /* Let's try to load the pid file here if we can. | |
3140 | * The PID file might actually be created by a START_POST | |
3141 | * script. In that case don't worry if the loading fails. */ | |
3142 | ||
3143 | has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST]; | |
3144 | r = service_load_pid_file(s, !has_start_post); | |
3145 | if (!has_start_post && r < 0) { | |
3146 | r = service_demand_pid_file(s); | |
3147 | if (r < 0 || !cgroup_good(s)) | |
3148 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
3149 | break; | |
3150 | } | |
3151 | } else | |
3152 | service_search_main_pid(s); | |
3153 | ||
3154 | service_enter_start_post(s); | |
3155 | break; | |
3156 | ||
3157 | case SERVICE_START_POST: | |
3158 | if (f != SERVICE_SUCCESS) { | |
3159 | service_enter_stop(s, f); | |
3160 | break; | |
3161 | } | |
3162 | ||
3163 | if (s->pid_file) { | |
3164 | int r; | |
3165 | ||
3166 | r = service_load_pid_file(s, true); | |
3167 | if (r < 0) { | |
3168 | r = service_demand_pid_file(s); | |
3169 | if (r < 0 || !cgroup_good(s)) | |
3170 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
3171 | break; | |
3172 | } | |
3173 | } else | |
3174 | service_search_main_pid(s); | |
3175 | ||
3176 | service_enter_running(s, SERVICE_SUCCESS); | |
3177 | break; | |
3178 | ||
3179 | case SERVICE_RELOAD: | |
3180 | if (f == SERVICE_SUCCESS) { | |
3181 | service_load_pid_file(s, true); | |
3182 | service_search_main_pid(s); | |
3183 | } | |
3184 | ||
3185 | s->reload_result = f; | |
3186 | service_enter_running(s, SERVICE_SUCCESS); | |
3187 | break; | |
3188 | ||
3189 | case SERVICE_STOP: | |
3190 | service_enter_signal(s, SERVICE_STOP_SIGTERM, f); | |
3191 | break; | |
3192 | ||
3193 | case SERVICE_STOP_SIGTERM: | |
3194 | case SERVICE_STOP_SIGKILL: | |
3195 | if (main_pid_good(s) <= 0) | |
3196 | service_enter_stop_post(s, f); | |
3197 | ||
3198 | /* If there is still a service | |
3199 | * process around, wait until | |
3200 | * that one quit, too */ | |
3201 | break; | |
3202 | ||
3203 | case SERVICE_STOP_POST: | |
3204 | case SERVICE_FINAL_SIGTERM: | |
3205 | case SERVICE_FINAL_SIGKILL: | |
3206 | service_enter_dead(s, f, true); | |
3207 | break; | |
3208 | ||
3209 | default: | |
3210 | assert_not_reached("Uh, control process died at wrong time."); | |
3211 | } | |
3212 | } | |
3213 | } | |
3214 | ||
3215 | /* Notify clients about changed exit status */ | |
3216 | unit_add_to_dbus_queue(u); | |
3217 | } | |
3218 | ||
3219 | static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) { | |
3220 | Service *s = SERVICE(u); | |
3221 | ||
3222 | assert(s); | |
3223 | assert(elapsed == 1); | |
3224 | ||
3225 | if (w == &s->watchdog_watch) { | |
3226 | service_handle_watchdog(s); | |
3227 | return; | |
3228 | } | |
3229 | ||
3230 | assert(w == &s->timer_watch); | |
3231 | ||
3232 | switch (s->state) { | |
3233 | ||
3234 | case SERVICE_START_PRE: | |
3235 | case SERVICE_START: | |
3236 | log_warning_unit(u->id, | |
3237 | "%s operation timed out. Terminating.", u->id); | |
3238 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
3239 | break; | |
3240 | ||
3241 | case SERVICE_START_POST: | |
3242 | log_warning_unit(u->id, | |
3243 | "%s operation timed out. Stopping.", u->id); | |
3244 | service_enter_stop(s, SERVICE_FAILURE_TIMEOUT); | |
3245 | break; | |
3246 | ||
3247 | case SERVICE_RELOAD: | |
3248 | log_warning_unit(u->id, | |
3249 | "%s operation timed out. Stopping.", u->id); | |
3250 | s->reload_result = SERVICE_FAILURE_TIMEOUT; | |
3251 | service_enter_running(s, SERVICE_SUCCESS); | |
3252 | break; | |
3253 | ||
3254 | case SERVICE_STOP: | |
3255 | log_warning_unit(u->id, | |
3256 | "%s stopping timed out. Terminating.", u->id); | |
3257 | service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
3258 | break; | |
3259 | ||
3260 | case SERVICE_STOP_SIGTERM: | |
3261 | if (s->kill_context.send_sigkill) { | |
3262 | log_warning_unit(u->id, | |
3263 | "%s stopping timed out. Killing.", u->id); | |
3264 | service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3265 | } else { | |
3266 | log_warning_unit(u->id, | |
3267 | "%s stopping timed out. Skipping SIGKILL.", u->id); | |
3268 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
3269 | } | |
3270 | ||
3271 | break; | |
3272 | ||
3273 | case SERVICE_STOP_SIGKILL: | |
3274 | /* Uh, we sent a SIGKILL and it is still not gone? | |
3275 | * Must be something we cannot kill, so let's just be | |
3276 | * weirded out and continue */ | |
3277 | ||
3278 | log_warning_unit(u->id, | |
3279 | "%s still around after SIGKILL. Ignoring.", u->id); | |
3280 | service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT); | |
3281 | break; | |
3282 | ||
3283 | case SERVICE_STOP_POST: | |
3284 | log_warning_unit(u->id, | |
3285 | "%s stopping timed out (2). Terminating.", u->id); | |
3286 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT); | |
3287 | break; | |
3288 | ||
3289 | case SERVICE_FINAL_SIGTERM: | |
3290 | if (s->kill_context.send_sigkill) { | |
3291 | log_warning_unit(u->id, | |
3292 | "%s stopping timed out (2). Killing.", u->id); | |
3293 | service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT); | |
3294 | } else { | |
3295 | log_warning_unit(u->id, | |
3296 | "%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", | |
3297 | u->id); | |
3298 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false); | |
3299 | } | |
3300 | ||
3301 | break; | |
3302 | ||
3303 | case SERVICE_FINAL_SIGKILL: | |
3304 | log_warning_unit(u->id, | |
3305 | "%s still around after SIGKILL (2). Entering failed mode.", u->id); | |
3306 | service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true); | |
3307 | break; | |
3308 | ||
3309 | case SERVICE_AUTO_RESTART: | |
3310 | log_info_unit(u->id, | |
3311 | "%s holdoff time over, scheduling restart.", u->id); | |
3312 | service_enter_restart(s); | |
3313 | break; | |
3314 | ||
3315 | default: | |
3316 | assert_not_reached("Timeout at wrong time."); | |
3317 | } | |
3318 | } | |
3319 | ||
3320 | static void service_notify_cgroup_empty_event(Unit *u) { | |
3321 | Service *s = SERVICE(u); | |
3322 | ||
3323 | assert(u); | |
3324 | ||
3325 | log_debug_unit(u->id, | |
3326 | "%s: cgroup is empty", u->id); | |
3327 | ||
3328 | switch (s->state) { | |
3329 | ||
3330 | /* Waiting for SIGCHLD is usually more interesting, | |
3331 | * because it includes return codes/signals. Which is | |
3332 | * why we ignore the cgroup events for most cases, | |
3333 | * except when we don't know pid which to expect the | |
3334 | * SIGCHLD for. */ | |
3335 | ||
3336 | case SERVICE_START: | |
3337 | case SERVICE_START_POST: | |
3338 | /* If we were hoping for the daemon to write its PID file, | |
3339 | * we can give up now. */ | |
3340 | if (s->pid_file_pathspec) { | |
3341 | log_warning_unit(u->id, | |
3342 | "%s never wrote its PID file. Failing.", UNIT(s)->id); | |
3343 | service_unwatch_pid_file(s); | |
3344 | if (s->state == SERVICE_START) | |
3345 | service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES); | |
3346 | else | |
3347 | service_enter_stop(s, SERVICE_FAILURE_RESOURCES); | |
3348 | } | |
3349 | break; | |
3350 | ||
3351 | case SERVICE_RUNNING: | |
3352 | /* service_enter_running() will figure out what to do */ | |
3353 | service_enter_running(s, SERVICE_SUCCESS); | |
3354 | break; | |
3355 | ||
3356 | case SERVICE_STOP_SIGTERM: | |
3357 | case SERVICE_STOP_SIGKILL: | |
3358 | ||
3359 | if (main_pid_good(s) <= 0 && !control_pid_good(s)) | |
3360 | service_enter_stop_post(s, SERVICE_SUCCESS); | |
3361 | ||
3362 | break; | |
3363 | ||
3364 | case SERVICE_FINAL_SIGTERM: | |
3365 | case SERVICE_FINAL_SIGKILL: | |
3366 | if (main_pid_good(s) <= 0 && !control_pid_good(s)) | |
3367 | service_enter_dead(s, SERVICE_SUCCESS, true); | |
3368 | ||
3369 | break; | |
3370 | ||
3371 | default: | |
3372 | ; | |
3373 | } | |
3374 | } | |
3375 | ||
3376 | static void service_notify_message(Unit *u, pid_t pid, char **tags) { | |
3377 | Service *s = SERVICE(u); | |
3378 | const char *e; | |
3379 | ||
3380 | assert(u); | |
3381 | ||
3382 | if (s->notify_access == NOTIFY_NONE) { | |
3383 | log_warning_unit(u->id, | |
3384 | "%s: Got notification message from PID %lu, but reception is disabled.", | |
3385 | u->id, (unsigned long) pid); | |
3386 | return; | |
3387 | } | |
3388 | ||
3389 | if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) { | |
3390 | log_warning_unit(u->id, | |
3391 | "%s: Got notification message from PID %lu, but reception only permitted for PID %lu", | |
3392 | u->id, (unsigned long) pid, (unsigned long) s->main_pid); | |
3393 | return; | |
3394 | } | |
3395 | ||
3396 | log_debug_unit(u->id, | |
3397 | "%s: Got message", u->id); | |
3398 | ||
3399 | /* Interpret MAINPID= */ | |
3400 | if ((e = strv_find_prefix(tags, "MAINPID=")) && | |
3401 | (s->state == SERVICE_START || | |
3402 | s->state == SERVICE_START_POST || | |
3403 | s->state == SERVICE_RUNNING || | |
3404 | s->state == SERVICE_RELOAD)) { | |
3405 | ||
3406 | if (parse_pid(e + 8, &pid) < 0) | |
3407 | log_warning_unit(u->id, | |
3408 | "Failed to parse notification message %s", e); | |
3409 | else { | |
3410 | log_debug_unit(u->id, | |
3411 | "%s: got %s", u->id, e); | |
3412 | service_set_main_pid(s, pid); | |
3413 | } | |
3414 | } | |
3415 | ||
3416 | /* Interpret READY= */ | |
3417 | if (s->type == SERVICE_NOTIFY && | |
3418 | s->state == SERVICE_START && | |
3419 | strv_find(tags, "READY=1")) { | |
3420 | log_debug_unit(u->id, | |
3421 | "%s: got READY=1", u->id); | |
3422 | ||
3423 | service_enter_start_post(s); | |
3424 | } | |
3425 | ||
3426 | /* Interpret STATUS= */ | |
3427 | e = strv_find_prefix(tags, "STATUS="); | |
3428 | if (e) { | |
3429 | char *t; | |
3430 | ||
3431 | if (e[7]) { | |
3432 | ||
3433 | if (!utf8_is_valid(e+7)) { | |
3434 | log_warning_unit(u->id, | |
3435 | "Status message in notification is not UTF-8 clean."); | |
3436 | return; | |
3437 | } | |
3438 | ||
3439 | t = strdup(e+7); | |
3440 | if (!t) { | |
3441 | log_error_unit(u->id, | |
3442 | "Failed to allocate string."); | |
3443 | return; | |
3444 | } | |
3445 | ||
3446 | log_debug_unit(u->id, | |
3447 | "%s: got %s", u->id, e); | |
3448 | ||
3449 | free(s->status_text); | |
3450 | s->status_text = t; | |
3451 | } else { | |
3452 | free(s->status_text); | |
3453 | s->status_text = NULL; | |
3454 | } | |
3455 | ||
3456 | } | |
3457 | if (strv_find(tags, "WATCHDOG=1")) { | |
3458 | log_debug_unit(u->id, | |
3459 | "%s: got WATCHDOG=1", u->id); | |
3460 | if (dual_timestamp_is_set(&s->watchdog_timestamp)) | |
3461 | service_reset_watchdog(s); | |
3462 | } | |
3463 | ||
3464 | /* Notify clients about changed status or main pid */ | |
3465 | unit_add_to_dbus_queue(u); | |
3466 | } | |
3467 | ||
3468 | #ifdef HAVE_SYSV_COMPAT | |
3469 | ||
3470 | static int service_enumerate(Manager *m) { | |
3471 | char **p; | |
3472 | unsigned i; | |
3473 | _cleanup_closedir_ DIR *d = NULL; | |
3474 | _cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL; | |
3475 | Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {}; | |
3476 | _cleanup_set_free_ Set *shutdown_services = NULL; | |
3477 | Unit *service; | |
3478 | Iterator j; | |
3479 | int r; | |
3480 | ||
3481 | assert(m); | |
3482 | ||
3483 | if (m->running_as != SYSTEMD_SYSTEM) | |
3484 | return 0; | |
3485 | ||
3486 | STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path) | |
3487 | for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) { | |
3488 | struct dirent *de; | |
3489 | ||
3490 | free(path); | |
3491 | path = strjoin(*p, "/", rcnd_table[i].path, NULL); | |
3492 | if (!path) { | |
3493 | r = -ENOMEM; | |
3494 | goto finish; | |
3495 | } | |
3496 | ||
3497 | if (d) | |
3498 | closedir(d); | |
3499 | ||
3500 | d = opendir(path); | |
3501 | if (!d) { | |
3502 | if (errno != ENOENT) | |
3503 | log_warning("opendir(%s) failed: %s", path, strerror(errno)); | |
3504 | ||
3505 | continue; | |
3506 | } | |
3507 | ||
3508 | while ((de = readdir(d))) { | |
3509 | int a, b; | |
3510 | ||
3511 | if (ignore_file(de->d_name)) | |
3512 | continue; | |
3513 | ||
3514 | if (de->d_name[0] != 'S' && de->d_name[0] != 'K') | |
3515 | continue; | |
3516 | ||
3517 | if (strlen(de->d_name) < 4) | |
3518 | continue; | |
3519 | ||
3520 | a = undecchar(de->d_name[1]); | |
3521 | b = undecchar(de->d_name[2]); | |
3522 | ||
3523 | if (a < 0 || b < 0) | |
3524 | continue; | |
3525 | ||
3526 | free(fpath); | |
3527 | fpath = strjoin(path, "/", de->d_name, NULL); | |
3528 | if (!fpath) { | |
3529 | r = -ENOMEM; | |
3530 | goto finish; | |
3531 | } | |
3532 | ||
3533 | if (access(fpath, X_OK) < 0) { | |
3534 | ||
3535 | if (errno != ENOENT) | |
3536 | log_warning("access() failed on %s: %s", fpath, strerror(errno)); | |
3537 | ||
3538 | continue; | |
3539 | } | |
3540 | ||
3541 | free(name); | |
3542 | name = sysv_translate_name(de->d_name + 3); | |
3543 | if (!name) { | |
3544 | r = log_oom(); | |
3545 | goto finish; | |
3546 | } | |
3547 | ||
3548 | r = manager_load_unit_prepare(m, name, NULL, NULL, &service); | |
3549 | if (r < 0) { | |
3550 | log_warning("Failed to prepare unit %s: %s", name, strerror(-r)); | |
3551 | continue; | |
3552 | } | |
3553 | ||
3554 | if (de->d_name[0] == 'S') { | |
3555 | ||
3556 | if (rcnd_table[i].type == RUNLEVEL_UP) { | |
3557 | SERVICE(service)->sysv_start_priority_from_rcnd = | |
3558 | MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd); | |
3559 | ||
3560 | SERVICE(service)->sysv_enabled = true; | |
3561 | } | |
3562 | ||
3563 | r = set_ensure_allocated(&runlevel_services[i], | |
3564 | trivial_hash_func, trivial_compare_func); | |
3565 | if (r < 0) | |
3566 | goto finish; | |
3567 | ||
3568 | r = set_put(runlevel_services[i], service); | |
3569 | if (r < 0) | |
3570 | goto finish; | |
3571 | ||
3572 | } else if (de->d_name[0] == 'K' && | |
3573 | (rcnd_table[i].type == RUNLEVEL_DOWN)) { | |
3574 | ||
3575 | r = set_ensure_allocated(&shutdown_services, | |
3576 | trivial_hash_func, trivial_compare_func); | |
3577 | if (r < 0) | |
3578 | goto finish; | |
3579 | ||
3580 | r = set_put(shutdown_services, service); | |
3581 | if (r < 0) | |
3582 | goto finish; | |
3583 | } | |
3584 | } | |
3585 | } | |
3586 | ||
3587 | /* Now we loaded all stubs and are aware of the lowest | |
3588 | start-up priority for all services, not let's actually load | |
3589 | the services, this will also tell us which services are | |
3590 | actually native now */ | |
3591 | manager_dispatch_load_queue(m); | |
3592 | ||
3593 | /* If this is a native service, rely on native ways to pull in | |
3594 | * a service, don't pull it in via sysv rcN.d links. */ | |
3595 | for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) | |
3596 | SET_FOREACH(service, runlevel_services[i], j) { | |
3597 | service = unit_follow_merge(service); | |
3598 | ||
3599 | if (service->fragment_path) | |
3600 | continue; | |
3601 | ||
3602 | r = unit_add_two_dependencies_by_name_inverse( | |
3603 | service, UNIT_AFTER, UNIT_WANTS, | |
3604 | rcnd_table[i].target, NULL, true); | |
3605 | if (r < 0) | |
3606 | goto finish; | |
3607 | } | |
3608 | ||
3609 | /* We honour K links only for halt/reboot. For the normal | |
3610 | * runlevels we assume the stop jobs will be implicitly added | |
3611 | * by the core logic. Also, we don't really distinguish here | |
3612 | * between the runlevels 0 and 6 and just add them to the | |
3613 | * special shutdown target. */ | |
3614 | SET_FOREACH(service, shutdown_services, j) { | |
3615 | service = unit_follow_merge(service); | |
3616 | ||
3617 | if (service->fragment_path) | |
3618 | continue; | |
3619 | ||
3620 | r = unit_add_two_dependencies_by_name( | |
3621 | service, UNIT_BEFORE, UNIT_CONFLICTS, | |
3622 | SPECIAL_SHUTDOWN_TARGET, NULL, true); | |
3623 | if (r < 0) | |
3624 | goto finish; | |
3625 | } | |
3626 | ||
3627 | r = 0; | |
3628 | ||
3629 | finish: | |
3630 | ||
3631 | for (i = 0; i < ELEMENTSOF(rcnd_table); i++) | |
3632 | set_free(runlevel_services[i]); | |
3633 | ||
3634 | return r; | |
3635 | } | |
3636 | #endif | |
3637 | ||
3638 | static void service_bus_name_owner_change( | |
3639 | Unit *u, | |
3640 | const char *name, | |
3641 | const char *old_owner, | |
3642 | const char *new_owner) { | |
3643 | ||
3644 | Service *s = SERVICE(u); | |
3645 | ||
3646 | assert(s); | |
3647 | assert(name); | |
3648 | ||
3649 | assert(streq(s->bus_name, name)); | |
3650 | assert(old_owner || new_owner); | |
3651 | ||
3652 | if (old_owner && new_owner) | |
3653 | log_debug_unit(u->id, | |
3654 | "%s's D-Bus name %s changed owner from %s to %s", | |
3655 | u->id, name, old_owner, new_owner); | |
3656 | else if (old_owner) | |
3657 | log_debug_unit(u->id, | |
3658 | "%s's D-Bus name %s no longer registered by %s", | |
3659 | u->id, name, old_owner); | |
3660 | else | |
3661 | log_debug_unit(u->id, | |
3662 | "%s's D-Bus name %s now registered by %s", | |
3663 | u->id, name, new_owner); | |
3664 | ||
3665 | s->bus_name_good = !!new_owner; | |
3666 | ||
3667 | if (s->type == SERVICE_DBUS) { | |
3668 | ||
3669 | /* service_enter_running() will figure out what to | |
3670 | * do */ | |
3671 | if (s->state == SERVICE_RUNNING) | |
3672 | service_enter_running(s, SERVICE_SUCCESS); | |
3673 | else if (s->state == SERVICE_START && new_owner) | |
3674 | service_enter_start_post(s); | |
3675 | ||
3676 | } else if (new_owner && | |
3677 | s->main_pid <= 0 && | |
3678 | (s->state == SERVICE_START || | |
3679 | s->state == SERVICE_START_POST || | |
3680 | s->state == SERVICE_RUNNING || | |
3681 | s->state == SERVICE_RELOAD)) { | |
3682 | ||
3683 | /* Try to acquire PID from bus service */ | |
3684 | log_debug_unit(u->id, | |
3685 | "Trying to acquire PID from D-Bus name..."); | |
3686 | ||
3687 | bus_query_pid(u->manager, name); | |
3688 | } | |
3689 | } | |
3690 | ||
3691 | static void service_bus_query_pid_done( | |
3692 | Unit *u, | |
3693 | const char *name, | |
3694 | pid_t pid) { | |
3695 | ||
3696 | Service *s = SERVICE(u); | |
3697 | ||
3698 | assert(s); | |
3699 | assert(name); | |
3700 | ||
3701 | log_debug_unit(u->id, | |
3702 | "%s's D-Bus name %s is now owned by process %u", | |
3703 | u->id, name, (unsigned) pid); | |
3704 | ||
3705 | if (s->main_pid <= 0 && | |
3706 | (s->state == SERVICE_START || | |
3707 | s->state == SERVICE_START_POST || | |
3708 | s->state == SERVICE_RUNNING || | |
3709 | s->state == SERVICE_RELOAD)) | |
3710 | service_set_main_pid(s, pid); | |
3711 | } | |
3712 | ||
3713 | int service_set_socket_fd(Service *s, int fd, Socket *sock) { | |
3714 | ||
3715 | assert(s); | |
3716 | assert(fd >= 0); | |
3717 | ||
3718 | /* This is called by the socket code when instantiating a new | |
3719 | * service for a stream socket and the socket needs to be | |
3720 | * configured. */ | |
3721 | ||
3722 | if (UNIT(s)->load_state != UNIT_LOADED) | |
3723 | return -EINVAL; | |
3724 | ||
3725 | if (s->socket_fd >= 0) | |
3726 | return -EBUSY; | |
3727 | ||
3728 | if (s->state != SERVICE_DEAD) | |
3729 | return -EAGAIN; | |
3730 | ||
3731 | s->socket_fd = fd; | |
3732 | s->got_socket_fd = true; | |
3733 | ||
3734 | unit_ref_set(&s->accept_socket, UNIT(sock)); | |
3735 | ||
3736 | return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false); | |
3737 | } | |
3738 | ||
3739 | static void service_reset_failed(Unit *u) { | |
3740 | Service *s = SERVICE(u); | |
3741 | ||
3742 | assert(s); | |
3743 | ||
3744 | if (s->state == SERVICE_FAILED) | |
3745 | service_set_state(s, SERVICE_DEAD); | |
3746 | ||
3747 | s->result = SERVICE_SUCCESS; | |
3748 | s->reload_result = SERVICE_SUCCESS; | |
3749 | ||
3750 | RATELIMIT_RESET(s->start_limit); | |
3751 | } | |
3752 | ||
3753 | static int service_kill(Unit *u, KillWho who, int signo, DBusError *error) { | |
3754 | Service *s = SERVICE(u); | |
3755 | return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error); | |
3756 | } | |
3757 | ||
3758 | static const char* const service_state_table[_SERVICE_STATE_MAX] = { | |
3759 | [SERVICE_DEAD] = "dead", | |
3760 | [SERVICE_START_PRE] = "start-pre", | |
3761 | [SERVICE_START] = "start", | |
3762 | [SERVICE_START_POST] = "start-post", | |
3763 | [SERVICE_RUNNING] = "running", | |
3764 | [SERVICE_EXITED] = "exited", | |
3765 | [SERVICE_RELOAD] = "reload", | |
3766 | [SERVICE_STOP] = "stop", | |
3767 | [SERVICE_STOP_SIGTERM] = "stop-sigterm", | |
3768 | [SERVICE_STOP_SIGKILL] = "stop-sigkill", | |
3769 | [SERVICE_STOP_POST] = "stop-post", | |
3770 | [SERVICE_FINAL_SIGTERM] = "final-sigterm", | |
3771 | [SERVICE_FINAL_SIGKILL] = "final-sigkill", | |
3772 | [SERVICE_FAILED] = "failed", | |
3773 | [SERVICE_AUTO_RESTART] = "auto-restart", | |
3774 | }; | |
3775 | ||
3776 | DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState); | |
3777 | ||
3778 | static const char* const service_restart_table[_SERVICE_RESTART_MAX] = { | |
3779 | [SERVICE_RESTART_NO] = "no", | |
3780 | [SERVICE_RESTART_ON_SUCCESS] = "on-success", | |
3781 | [SERVICE_RESTART_ON_FAILURE] = "on-failure", | |
3782 | [SERVICE_RESTART_ON_ABORT] = "on-abort", | |
3783 | [SERVICE_RESTART_ALWAYS] = "always" | |
3784 | }; | |
3785 | ||
3786 | DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); | |
3787 | ||
3788 | static const char* const service_type_table[_SERVICE_TYPE_MAX] = { | |
3789 | [SERVICE_SIMPLE] = "simple", | |
3790 | [SERVICE_FORKING] = "forking", | |
3791 | [SERVICE_ONESHOT] = "oneshot", | |
3792 | [SERVICE_DBUS] = "dbus", | |
3793 | [SERVICE_NOTIFY] = "notify", | |
3794 | [SERVICE_IDLE] = "idle" | |
3795 | }; | |
3796 | ||
3797 | DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType); | |
3798 | ||
3799 | static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = { | |
3800 | [SERVICE_EXEC_START_PRE] = "ExecStartPre", | |
3801 | [SERVICE_EXEC_START] = "ExecStart", | |
3802 | [SERVICE_EXEC_START_POST] = "ExecStartPost", | |
3803 | [SERVICE_EXEC_RELOAD] = "ExecReload", | |
3804 | [SERVICE_EXEC_STOP] = "ExecStop", | |
3805 | [SERVICE_EXEC_STOP_POST] = "ExecStopPost", | |
3806 | }; | |
3807 | ||
3808 | DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand); | |
3809 | ||
3810 | static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = { | |
3811 | [NOTIFY_NONE] = "none", | |
3812 | [NOTIFY_MAIN] = "main", | |
3813 | [NOTIFY_ALL] = "all" | |
3814 | }; | |
3815 | ||
3816 | DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess); | |
3817 | ||
3818 | static const char* const service_result_table[_SERVICE_RESULT_MAX] = { | |
3819 | [SERVICE_SUCCESS] = "success", | |
3820 | [SERVICE_FAILURE_RESOURCES] = "resources", | |
3821 | [SERVICE_FAILURE_TIMEOUT] = "timeout", | |
3822 | [SERVICE_FAILURE_EXIT_CODE] = "exit-code", | |
3823 | [SERVICE_FAILURE_SIGNAL] = "signal", | |
3824 | [SERVICE_FAILURE_CORE_DUMP] = "core-dump", | |
3825 | [SERVICE_FAILURE_WATCHDOG] = "watchdog", | |
3826 | [SERVICE_FAILURE_START_LIMIT] = "start-limit" | |
3827 | }; | |
3828 | ||
3829 | DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult); | |
3830 | ||
3831 | static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = { | |
3832 | [SERVICE_START_LIMIT_NONE] = "none", | |
3833 | [SERVICE_START_LIMIT_REBOOT] = "reboot", | |
3834 | [SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force", | |
3835 | [SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate" | |
3836 | }; | |
3837 | DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction); | |
3838 | ||
3839 | const UnitVTable service_vtable = { | |
3840 | .object_size = sizeof(Service), | |
3841 | ||
3842 | .sections = | |
3843 | "Unit\0" | |
3844 | "Service\0" | |
3845 | "Install\0", | |
3846 | ||
3847 | .private_section = "Service", | |
3848 | .exec_context_offset = offsetof(Service, exec_context), | |
3849 | .cgroup_context_offset = offsetof(Service, cgroup_context), | |
3850 | ||
3851 | .init = service_init, | |
3852 | .done = service_done, | |
3853 | .load = service_load, | |
3854 | ||
3855 | .coldplug = service_coldplug, | |
3856 | ||
3857 | .dump = service_dump, | |
3858 | ||
3859 | .start = service_start, | |
3860 | .stop = service_stop, | |
3861 | .reload = service_reload, | |
3862 | ||
3863 | .can_reload = service_can_reload, | |
3864 | ||
3865 | .kill = service_kill, | |
3866 | ||
3867 | .serialize = service_serialize, | |
3868 | .deserialize_item = service_deserialize_item, | |
3869 | ||
3870 | .active_state = service_active_state, | |
3871 | .sub_state_to_string = service_sub_state_to_string, | |
3872 | ||
3873 | .check_gc = service_check_gc, | |
3874 | .check_snapshot = service_check_snapshot, | |
3875 | ||
3876 | .sigchld_event = service_sigchld_event, | |
3877 | .timer_event = service_timer_event, | |
3878 | .fd_event = service_fd_event, | |
3879 | ||
3880 | .reset_failed = service_reset_failed, | |
3881 | ||
3882 | .notify_cgroup_empty = service_notify_cgroup_empty_event, | |
3883 | .notify_message = service_notify_message, | |
3884 | ||
3885 | .bus_name_owner_change = service_bus_name_owner_change, | |
3886 | .bus_query_pid_done = service_bus_query_pid_done, | |
3887 | ||
3888 | .bus_interface = "org.freedesktop.systemd1.Service", | |
3889 | .bus_message_handler = bus_service_message_handler, | |
3890 | .bus_invalidating_properties = bus_service_invalidating_properties, | |
3891 | .bus_set_property = bus_service_set_property, | |
3892 | .bus_commit_properties = bus_service_commit_properties, | |
3893 | ||
3894 | .can_transient = true, | |
3895 | ||
3896 | #ifdef HAVE_SYSV_COMPAT | |
3897 | .enumerate = service_enumerate, | |
3898 | #endif | |
3899 | .status_message_formats = { | |
3900 | .starting_stopping = { | |
3901 | [0] = "Starting %s...", | |
3902 | [1] = "Stopping %s...", | |
3903 | }, | |
3904 | .finished_start_job = { | |
3905 | [JOB_DONE] = "Started %s.", | |
3906 | [JOB_FAILED] = "Failed to start %s.", | |
3907 | [JOB_DEPENDENCY] = "Dependency failed for %s.", | |
3908 | [JOB_TIMEOUT] = "Timed out starting %s.", | |
3909 | }, | |
3910 | .finished_stop_job = { | |
3911 | [JOB_DONE] = "Stopped %s.", | |
3912 | [JOB_FAILED] = "Stopped (with error) %s.", | |
3913 | [JOB_TIMEOUT] = "Timed out stopping %s.", | |
3914 | }, | |
3915 | }, | |
3916 | }; |